diff options
Diffstat (limited to 'drivers/usb/gadget')
130 files changed, 31800 insertions, 25676 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 7ecb68a6741..ba18e9c110c 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -58,6 +58,20 @@ config USB_GADGET_DEBUG trying to track down. Never enable these messages for a production build. +config USB_GADGET_VERBOSE + bool "Verbose debugging Messages (DEVELOPMENT)" + depends on USB_GADGET_DEBUG + help + Many controller and gadget drivers will print verbose debugging + messages if you use this option to ask for those messages. + + Avoid enabling these messages, even if you're actively + debugging such a driver. Many drivers will emit so many + messages that the driver timings are affected, which will + either create new failure modes or remove the one you're + trying to track down. Never enable these messages for a + production build. + config USB_GADGET_DEBUG_FILES boolean "Debugging information files (DEVELOPMENT)" depends on PROC_FS @@ -123,13 +137,7 @@ config USB_GADGET_STORAGE_NUM_BUFFERS # - discrete ones (including all PCI-only controllers) # - debug/dummy gadget+hcd is last. # -choice - prompt "USB Peripheral Controller" - help - A USB device uses a controller to talk to its host. - Systems should have only one such upstream link. - Many controller drivers are platform-specific; these - often need board-specific hooks. +menu "USB Peripheral Controller" # # Integrated controllers @@ -137,7 +145,7 @@ choice config USB_AT91 tristate "Atmel AT91 USB Device Port" - depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9 && !ARCH_AT91SAM9G45 + depends on ARCH_AT91 help Many Atmel AT91 processors (such as the AT91RM2000) have a full speed USB Device Port with support for five configurable @@ -147,21 +155,41 @@ config USB_AT91 dynamically linked module called "at91_udc" and force all gadget drivers to also be dynamically linked. +config USB_LPC32XX + tristate "LPC32XX USB Peripheral Controller" + depends on ARCH_LPC32XX && I2C + select USB_ISP1301 + help + This option selects the USB device controller in the LPC32xx SoC. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "lpc32xx_udc" and force all + gadget drivers to also be dynamically linked. + config USB_ATMEL_USBA tristate "Atmel USBA" - select USB_GADGET_DUALSPEED - depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45 + depends on AVR32 || ARCH_AT91 help USBA is the integrated high-speed USB Device controller on the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel. +config USB_BCM63XX_UDC + tristate "Broadcom BCM63xx Peripheral Controller" + depends on BCM63XX + help + Many Broadcom BCM63xx chipsets (such as the BCM6328) have a + high speed USB Device Port with support for four fixed endpoints + (plus endpoint zero). + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "bcm63xx_udc". + config USB_FSL_USB2 tristate "Freescale Highspeed USB DR Peripheral Controller" depends on FSL_SOC || ARCH_MXC - select USB_GADGET_DUALSPEED select USB_FSL_MPH_DR_OF if OF help - Some of Freescale PowerPC processors have a High Speed + Some of Freescale PowerPC and i.MX processors have a High Speed Dual-Role(DR) USB controller, which supports device mode. The number of programmable endpoints is different through @@ -173,16 +201,32 @@ config USB_FSL_USB2 config USB_FUSB300 tristate "Faraday FUSB300 USB Peripheral Controller" - depends on !PHYS_ADDR_T_64BIT - select USB_GADGET_DUALSPEED + depends on !PHYS_ADDR_T_64BIT && HAS_DMA help Faraday usb device controller FUSB300 driver +config USB_FOTG210_UDC + depends on HAS_DMA + tristate "Faraday FOTG210 USB Peripheral Controller" + help + Faraday USB2.0 OTG controller which can be configured as + high speed or full speed USB device. This driver supppors + Bulk Transfer so far. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "fotg210_udc". + +config USB_GR_UDC + tristate "Aeroflex Gaisler GRUSBDC USB Peripheral Controller Driver" + depends on HAS_DMA + help + Select this to support Aeroflex Gaisler GRUSBDC cores from the GRLIB + VHDL IP core library. + config USB_OMAP tristate "OMAP USB Device Controller" - depends on ARCH_OMAP - select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG - select USB_OTG_UTILS if ARCH_OMAP + depends on ARCH_OMAP1 + depends on ISP1301_OMAP || !(MACH_OMAP_H2 || MACH_OMAP_H3) help Many Texas Instruments OMAP processors have flexible full speed USB device controllers, with support for up to 30 @@ -197,7 +241,6 @@ config USB_OMAP config USB_PXA25X tristate "PXA 25x or IXP 4xx" depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX - select USB_OTG_UTILS help Intel's PXA 25x series XScale ARM-5TE processors include an integrated full speed USB 1.1 device controller. The @@ -222,7 +265,7 @@ config USB_PXA25X_SMALL config USB_R8A66597 tristate "Renesas R8A66597 USB Peripheral Controller" - select USB_GADGET_DUALSPEED + depends on HAS_DMA help R8A66597 is a discrete USB host and peripheral controller chip that supports both full and high speed USB 2.0 data transfers. @@ -235,7 +278,6 @@ config USB_R8A66597 config USB_RENESAS_USBHS_UDC tristate 'Renesas USBHS controller' depends on USB_RENESAS_USBHS - select USB_GADGET_DUALSPEED help Renesas USBHS is a discrete USB host and peripheral controller chip that supports both full and high speed USB 2.0 data transfers. @@ -247,8 +289,6 @@ config USB_RENESAS_USBHS_UDC config USB_PXA27X tristate "PXA 27x" - depends on ARCH_PXA && (PXA27x || PXA3xx) - select USB_OTG_UTILS help Intel's PXA 27x series XScale ARM v5TE processors include an integrated full speed USB 1.1 device controller. @@ -260,31 +300,9 @@ config USB_PXA27X dynamically linked module called "pxa27x_udc" and force all gadget drivers to also be dynamically linked. -config USB_S3C_HSOTG - tristate "S3C HS/OtG USB Device controller" - depends on S3C_DEV_USB_HSOTG - select USB_GADGET_DUALSPEED - help - The Samsung S3C64XX USB2.0 high-speed gadget controller - integrated into the S3C64XX series SoC. - -config USB_IMX - tristate "Freescale i.MX1 USB Peripheral Controller" - depends on ARCH_MXC - help - Freescale's i.MX1 includes an integrated full speed - USB 1.1 device controller. - - It has Six fixed-function endpoints, as well as endpoint - zero (for control transfers). - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "imx_udc" and force all - gadget drivers to also be dynamically linked. - config USB_S3C2410 tristate "S3C2410 USB Device Controller" - depends on ARCH_S3C2410 + depends on ARCH_S3C24XX help Samsung's S3C2410 is an ARM-4 processor with an integrated full speed USB 1.1 device controller. It has 4 configurable @@ -299,8 +317,7 @@ config USB_S3C2410_DEBUG config USB_S3C_HSUDC tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller" - depends on ARCH_S3C2410 - select USB_GADGET_DUALSPEED + depends on ARCH_S3C24XX help Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC integrated with dual speed USB 2.0 device controller. It has @@ -310,28 +327,25 @@ config USB_S3C_HSUDC config USB_MV_UDC tristate "Marvell USB2.0 Device Controller" - select USB_GADGET_DUALSPEED + depends on HAS_DMA help Marvell Socs (including PXA and MMP series) include a high speed USB2.0 OTG controller, which can be configured as high speed or full speed USB peripheral. +config USB_MV_U3D + depends on HAS_DMA + tristate "MARVELL PXA2128 USB 3.0 controller" + help + MARVELL PXA2128 Processor series include a super speed USB3.0 device + controller, which support super speed USB peripheral. + # # Controllers available in both integrated and discrete versions # -# musb builds in ../musb along with host support -config USB_GADGET_MUSB_HDRC - tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)" - depends on USB_MUSB_HDRC - select USB_GADGET_DUALSPEED - help - This OTG-capable silicon IP is used in dual designs including - the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin - config USB_M66592 tristate "Renesas M66592 USB Peripheral Controller" - select USB_GADGET_DUALSPEED help M66592 is a discrete USB peripheral controller chip that supports both full and high speed USB 2.0 data transfers. @@ -348,7 +362,6 @@ config USB_M66592 config USB_AMD5536UDC tristate "AMD5536 UDC" depends on PCI - select USB_GADGET_DUALSPEED help The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge. It is a USB Highspeed DMA capable USB device controller. Beside ep0 @@ -373,21 +386,8 @@ config USB_FSL_QE Set CONFIG_USB_GADGET to "m" to build this driver as a dynamically linked module called "fsl_qe_udc". -config USB_CI13XXX_PCI - tristate "MIPS USB CI13xxx PCI UDC" - depends on PCI - select USB_GADGET_DUALSPEED - help - MIPS USB IP core family device controller - Currently it only supports IP part number CI13412 - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "ci13xxx_udc" and force all - gadget drivers to also be dynamically linked. - config USB_NET2272 tristate "PLX NET2272" - select USB_GADGET_DUALSPEED help PLX NET2272 is a USB peripheral controller which supports both full and high speed USB 2.0 data transfers. @@ -400,7 +400,7 @@ config USB_NET2272 config USB_NET2272_DMA boolean "Support external DMA controller" - depends on USB_NET2272 + depends on USB_NET2272 && HAS_DMA help The NET2272 part can optionally support an external DMA controller, but your board has to have support in the @@ -411,7 +411,6 @@ config USB_NET2272_DMA config USB_NET2280 tristate "NetChip 228x" depends on PCI - select USB_GADGET_DUALSPEED help NetChip 2280 / 2282 is a PCI based USB peripheral controller which supports both full and high speed USB 2.0 data transfers. @@ -438,26 +437,9 @@ config USB_GOKU dynamically linked module called "goku_udc" and to force all gadget drivers to also be dynamically linked. -config USB_LANGWELL - tristate "Intel Langwell USB Device Controller" - depends on PCI - depends on !PHYS_ADDR_T_64BIT - select USB_GADGET_DUALSPEED - help - Intel Langwell USB Device Controller is a High-Speed USB - On-The-Go device controller. - - The number of programmable endpoints is different through - controller revision. - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "langwell_udc" and force all - gadget drivers to also be dynamically linked. - config USB_EG20T tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC" depends on PCI - select USB_GADGET_DUALSPEED help This is a USB device driver for EG20T PCH. EG20T PCH is the platform controller hub that is used in Intel's @@ -477,23 +459,6 @@ config USB_EG20T ML7213/ML7831 is companion chip for Intel Atom E6xx series. ML7213/ML7831 is completely compatible for Intel EG20T PCH. -config USB_CI13XXX_MSM - tristate "MIPS USB CI13xxx for MSM" - depends on ARCH_MSM - select USB_GADGET_DUALSPEED - select USB_MSM_OTG - help - MSM SoC has chipidea USB controller. This driver uses - ci13xxx_udc core. - This driver depends on OTG driver for PHY initialization, - clock management, powering up VBUS, and power management. - This driver is not supported on boards like trout which - has an external PHY. - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "ci13xxx_msm" and force all - gadget drivers to also be dynamically linked. - # # LAST -- dummy/emulated controller # @@ -501,8 +466,6 @@ config USB_CI13XXX_MSM config USB_DUMMY_HCD tristate "Dummy HCD (DEVELOPMENT)" depends on USB=y || (USB=m && USB_GADGET=m) - select USB_GADGET_DUALSPEED - select USB_GADGET_SUPERSPEED help This host controller driver emulates USB, looping all data transfer requests back to a USB "gadget driver" in the same host. The host @@ -525,20 +488,60 @@ config USB_DUMMY_HCD # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears # first and will be selected by default. -endchoice - -# Selected by UDC drivers that support high-speed operation. -config USB_GADGET_DUALSPEED - bool - -# Selected by UDC drivers that support super-speed opperation -config USB_GADGET_SUPERSPEED - bool - depends on USB_GADGET_DUALSPEED +endmenu # # USB Gadget Drivers # + +# composite based drivers +config USB_LIBCOMPOSITE + tristate + select CONFIGFS_FS + depends on USB_GADGET + +config USB_F_ACM + tristate + +config USB_F_SS_LB + tristate + +config USB_U_SERIAL + tristate + +config USB_U_ETHER + tristate + +config USB_F_SERIAL + tristate + +config USB_F_OBEX + tristate + +config USB_F_NCM + tristate + +config USB_F_ECM + tristate + +config USB_F_PHONET + tristate + +config USB_F_EEM + tristate + +config USB_F_SUBSET + tristate + +config USB_F_RNDIS + tristate + +config USB_F_MASS_STORAGE + tristate + +config USB_F_FS + tristate + choice tristate "USB Gadget Drivers" default USB_ETH @@ -560,8 +563,161 @@ choice # this first set of drivers all depend on bulk-capable hardware. +config USB_CONFIGFS + tristate "USB functions configurable through configfs" + select USB_LIBCOMPOSITE + help + A Linux USB "gadget" can be set up through configfs. + If this is the case, the USB functions (which from the host's + perspective are seen as interfaces) and configurations are + specified simply by creating appropriate directories in configfs. + Associating functions with configurations is done by creating + appropriate symbolic links. + For more information see Documentation/usb/gadget_configfs.txt. + +config USB_CONFIGFS_SERIAL + boolean "Generic serial bulk in/out" + depends on USB_CONFIGFS + depends on TTY + select USB_U_SERIAL + select USB_F_SERIAL + help + The function talks to the Linux-USB generic serial driver. + +config USB_CONFIGFS_ACM + boolean "Abstract Control Model (CDC ACM)" + depends on USB_CONFIGFS + depends on TTY + select USB_U_SERIAL + select USB_F_ACM + help + ACM serial link. This function can be used to interoperate with + MS-Windows hosts or with the Linux-USB "cdc-acm" driver. + +config USB_CONFIGFS_OBEX + boolean "Object Exchange Model (CDC OBEX)" + depends on USB_CONFIGFS + depends on TTY + select USB_U_SERIAL + select USB_F_OBEX + help + You will need a user space OBEX server talking to /dev/ttyGS*, + since the kernel itself doesn't implement the OBEX protocol. + +config USB_CONFIGFS_NCM + boolean "Network Control Model (CDC NCM)" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_NCM + help + NCM is an advanced protocol for Ethernet encapsulation, allows + grouping of several ethernet frames into one USB transfer and + different alignment possibilities. + +config USB_CONFIGFS_ECM + boolean "Ethernet Control Model (CDC ECM)" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_ECM + help + The "Communication Device Class" (CDC) Ethernet Control Model. + That protocol is often avoided with pure Ethernet adapters, in + favor of simpler vendor-specific hardware, but is widely + supported by firmware for smart network devices. + +config USB_CONFIGFS_ECM_SUBSET + boolean "Ethernet Control Model (CDC ECM) subset" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_SUBSET + help + On hardware that can't implement the full protocol, + a simple CDC subset is used, placing fewer demands on USB. + +config USB_CONFIGFS_RNDIS + bool "RNDIS" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_RNDIS + help + Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol, + and Microsoft provides redistributable binary RNDIS drivers for + older versions of Windows. + + To make MS-Windows work with this, use Documentation/usb/linux.inf + as the "driver info file". For versions of MS-Windows older than + XP, you'll need to download drivers from Microsoft's website; a URL + is given in comments found in that info file. + +config USB_CONFIGFS_EEM + bool "Ethernet Emulation Model (EEM)" + depends on USB_CONFIGFS + depends on NET + select USB_U_ETHER + select USB_F_EEM + help + CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM + and therefore can be supported by more hardware. Technically ECM and + EEM are designed for different applications. The ECM model extends + the network interface to the target (e.g. a USB cable modem), and the + EEM model is for mobile devices to communicate with hosts using + ethernet over USB. For Linux gadgets, however, the interface with + the host is the same (a usbX device), so the differences are minimal. + +config USB_CONFIGFS_PHONET + boolean "Phonet protocol" + depends on USB_CONFIGFS + depends on NET + depends on PHONET + select USB_U_ETHER + select USB_F_PHONET + help + The Phonet protocol implementation for USB device. + +config USB_CONFIGFS_MASS_STORAGE + boolean "Mass storage" + depends on USB_CONFIGFS + depends on BLOCK + select USB_F_MASS_STORAGE + help + The Mass Storage Gadget acts as a USB Mass Storage disk drive. + As its storage repository it can use a regular file or a block + device (in much the same way as the "loop" device driver), + specified as a module parameter or sysfs option. + +config USB_CONFIGFS_F_LB_SS + boolean "Loopback and sourcesink function (for testing)" + depends on USB_CONFIGFS + select USB_F_SS_LB + help + Loopback function loops back a configurable number of transfers. + Sourcesink function either sinks and sources bulk data. + It also implements control requests, for "chapter 9" conformance. + Make this be the first driver you try using on top of any new + USB peripheral controller driver. Then you can use host-side + test software, like the "usbtest" driver, to put your hardware + and its driver through a basic set of functional tests. + +config USB_CONFIGFS_F_FS + boolean "Function filesystem (FunctionFS)" + depends on USB_CONFIGFS + select USB_F_FS + help + The Function Filesystem (FunctionFS) lets one create USB + composite functions in user space in the same way GadgetFS + lets one create USB gadgets in user space. This allows creation + of composite gadgets such that some of the functions are + implemented in kernel space (for instance Ethernet, serial or + mass storage) and other are implemented in user space. + config USB_ZERO tristate "Gadget Zero (DEVELOPMENT)" + select USB_LIBCOMPOSITE + select USB_F_SS_LB help Gadget Zero is a two-configuration device. It either sinks and sources bulk data; or it loops back a configurable number of @@ -595,23 +751,41 @@ config USB_ZERO_HNPTEST one serve as the USB host instead (in the "B-Host" role). config USB_AUDIO - tristate "Audio Gadget (EXPERIMENTAL)" + tristate "Audio Gadget" depends on SND + select USB_LIBCOMPOSITE select SND_PCM help - Gadget Audio is compatible with USB Audio Class specification 1.0. - It will include at least one AudioControl interface, zero or more - AudioStream interface and zero or more MIDIStream interface. - - Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to - playback or capture audio stream. + This Gadget Audio driver is compatible with USB Audio Class + specification 2.0. It implements 1 AudioControl interface, + 1 AudioStreaming Interface each for USB-OUT and USB-IN. + Number of channels, sample rate and sample size can be + specified as module parameters. + This driver doesn't expect any real Audio codec to be present + on the device - the audio streams are simply sinked to and + sourced from a virtual ALSA sound card created. The user-space + application may choose to do whatever it wants with the data + received from the USB Host and choose to provide whatever it + wants as audio data to the USB Host. Say "y" to link the driver statically, or "m" to build a dynamically linked module called "g_audio". +config GADGET_UAC1 + bool "UAC 1.0 (Legacy)" + depends on USB_AUDIO + help + If you instead want older UAC Spec-1.0 driver that also has audio + paths hardwired to the Audio codec chip on-board and doesn't work + without one. + config USB_ETH tristate "Ethernet Gadget (with CDC Ethernet support)" depends on NET + select USB_LIBCOMPOSITE + select USB_U_ETHER + select USB_F_ECM + select USB_F_SUBSET select CRC32 help This driver implements Ethernet style communication, in one of @@ -647,6 +821,8 @@ config USB_ETH config USB_ETH_RNDIS bool "RNDIS support" depends on USB_ETH + select USB_LIBCOMPOSITE + select USB_F_RNDIS default y help Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol, @@ -665,6 +841,8 @@ config USB_ETH_RNDIS config USB_ETH_EEM bool "Ethernet Emulation Model (EEM) support" depends on USB_ETH + select USB_LIBCOMPOSITE + select USB_F_EEM default n help CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM @@ -681,19 +859,21 @@ config USB_ETH_EEM config USB_G_NCM tristate "Network Control Model (NCM) support" depends on NET + select USB_LIBCOMPOSITE + select USB_U_ETHER + select USB_F_NCM select CRC32 help This driver implements USB CDC NCM subclass standard. NCM is an advanced protocol for Ethernet encapsulation, allows grouping - of several ethernet frames into one USB transfer and diffferent + of several ethernet frames into one USB transfer and different alignment possibilities. Say "y" to link the driver statically, or "m" to build a dynamically linked module called "g_ncm". config USB_GADGETFS - tristate "Gadget Filesystem (EXPERIMENTAL)" - depends on EXPERIMENTAL + tristate "Gadget Filesystem" help This driver provides a filesystem based API that lets user mode programs implement a single-configuration USB device, including @@ -701,15 +881,13 @@ config USB_GADGETFS All endpoints, transfer speeds, and transfer types supported by the hardware are available, through read() and write() calls. - Currently, this option is still labelled as EXPERIMENTAL because - of existing race conditions in the underlying in-kernel AIO core. - Say "y" to link the driver statically, or "m" to build a dynamically linked module called "gadgetfs". config USB_FUNCTIONFS - tristate "Function Filesystem (EXPERIMENTAL)" - depends on EXPERIMENTAL + tristate "Function Filesystem" + select USB_LIBCOMPOSITE + select USB_F_FS select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS) help The Function Filesystem (FunctionFS) lets one create USB @@ -728,6 +906,9 @@ config USB_FUNCTIONFS config USB_FUNCTIONFS_ETH bool "Include configuration with CDC ECM (Ethernet)" depends on USB_FUNCTIONFS && NET + select USB_U_ETHER + select USB_F_ECM + select USB_F_SUBSET help Include a configuration with CDC ECM function (Ethernet) and the Function Filesystem. @@ -735,6 +916,8 @@ config USB_FUNCTIONFS_ETH config USB_FUNCTIONFS_RNDIS bool "Include configuration with RNDIS (Ethernet)" depends on USB_FUNCTIONFS && NET + select USB_U_ETHER + select USB_F_RNDIS help Include a configuration with RNDIS function (Ethernet) and the Filesystem. @@ -745,48 +928,42 @@ config USB_FUNCTIONFS_GENERIC Include a configuration with the Function Filesystem alone with no Ethernet interface. -config USB_FILE_STORAGE - tristate "File-backed Storage Gadget (DEPRECATED)" - depends on BLOCK - help - The File-backed Storage Gadget acts as a USB Mass Storage - disk drive. As its storage repository it can use a regular - file or a block device (in much the same way as the "loop" - device driver), specified as a module parameter. - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "g_file_storage". - - NOTE: This driver is deprecated. Its replacement is the - Mass Storage Gadget. - -config USB_FILE_STORAGE_TEST - bool "File-backed Storage Gadget testing version" - depends on USB_FILE_STORAGE - default n - help - Say "y" to generate the larger testing version of the - File-backed Storage Gadget, useful for probing the - behavior of USB Mass Storage hosts. Not needed for - normal operation. - config USB_MASS_STORAGE tristate "Mass Storage Gadget" depends on BLOCK + select USB_LIBCOMPOSITE + select USB_F_MASS_STORAGE help The Mass Storage Gadget acts as a USB Mass Storage disk drive. As its storage repository it can use a regular file or a block device (in much the same way as the "loop" device driver), specified as a module parameter or sysfs option. - This driver is an updated replacement for the deprecated - File-backed Storage Gadget (g_file_storage). + This driver is a replacement for now removed File-backed + Storage Gadget (g_file_storage). Say "y" to link the driver statically, or "m" to build a dynamically linked module called "g_mass_storage". +config USB_GADGET_TARGET + tristate "USB Gadget Target Fabric Module" + depends on TARGET_CORE + select USB_LIBCOMPOSITE + help + This fabric is an USB gadget. Two USB protocols are supported that is + BBB or BOT (Bulk Only Transport) and UAS (USB Attached SCSI). BOT is + advertised on alternative interface 0 (primary) and UAS is on + alternative interface 1. Both protocols can work on USB2.0 and USB3.0. + UAS utilizes the USB 3.0 feature called streams support. + config USB_G_SERIAL tristate "Serial Gadget (with CDC ACM and CDC OBEX support)" + depends on TTY + select USB_U_SERIAL + select USB_F_ACM + select USB_F_SERIAL + select USB_F_OBEX + select USB_LIBCOMPOSITE help The Serial Gadget talks to the Linux-USB generic serial driver. This driver supports a CDC-ACM module option, which can be used @@ -805,8 +982,9 @@ config USB_G_SERIAL make MS-Windows work with CDC ACM. config USB_MIDI_GADGET - tristate "MIDI Gadget (EXPERIMENTAL)" - depends on SND && EXPERIMENTAL + tristate "MIDI Gadget" + depends on SND + select USB_LIBCOMPOSITE select SND_RAWMIDI help The MIDI Gadget acts as a USB Audio device, with one MIDI @@ -820,6 +998,7 @@ config USB_MIDI_GADGET config USB_G_PRINTER tristate "Printer Gadget" + select USB_LIBCOMPOSITE help The Printer Gadget channels data between the USB host and a userspace program driving the print engine. The user space @@ -833,9 +1012,16 @@ config USB_G_PRINTER For more information, see Documentation/usb/gadget_printer.txt which includes sample code for accessing the device file. +if TTY + config USB_CDC_COMPOSITE tristate "CDC Composite Device (Ethernet and ACM)" depends on NET + select USB_LIBCOMPOSITE + select USB_U_SERIAL + select USB_U_ETHER + select USB_F_ACM + select USB_F_ECM help This driver provides two functions in one configuration: a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link. @@ -850,6 +1036,13 @@ config USB_CDC_COMPOSITE config USB_G_NOKIA tristate "Nokia composite gadget" depends on PHONET + select USB_LIBCOMPOSITE + select USB_U_SERIAL + select USB_U_ETHER + select USB_F_ACM + select USB_F_OBEX + select USB_F_PHONET + select USB_F_ECM help The Nokia composite gadget provides support for acm, obex and phonet in only one composite gadget driver. @@ -860,6 +1053,10 @@ config USB_G_NOKIA config USB_G_ACM_MS tristate "CDC Composite Device (ACM and mass storage)" depends on BLOCK + select USB_LIBCOMPOSITE + select USB_U_SERIAL + select USB_F_ACM + select USB_F_MASS_STORAGE help This driver provides two functions in one configuration: a mass storage, and a CDC ACM (serial port) link. @@ -868,9 +1065,14 @@ config USB_G_ACM_MS dynamically linked module called "g_acm_ms". config USB_G_MULTI - tristate "Multifunction Composite Gadget (EXPERIMENTAL)" + tristate "Multifunction Composite Gadget" depends on BLOCK && NET select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS + select USB_LIBCOMPOSITE + select USB_U_SERIAL + select USB_U_ETHER + select USB_F_ACM + select USB_F_MASS_STORAGE help The Multifunction Composite Gadget provides Ethernet (RNDIS and/or CDC Ethernet), mass storage and ACM serial link @@ -889,6 +1091,7 @@ config USB_G_MULTI config USB_G_MULTI_RNDIS bool "RNDIS + CDC Serial + Storage configuration" depends on USB_G_MULTI + select USB_F_RNDIS default y help This option enables a configuration with RNDIS, CDC Serial and @@ -902,6 +1105,7 @@ config USB_G_MULTI_CDC bool "CDC Ethernet + CDC Serial + Storage configuration" depends on USB_G_MULTI default n + select USB_F_ECM help This option enables a configuration with CDC Ethernet (ECM), CDC Serial and Mass Storage functions available in the Multifunction @@ -909,8 +1113,11 @@ config USB_G_MULTI_CDC If unsure, say "y". +endif # TTY + config USB_G_HID tristate "HID Gadget" + select USB_LIBCOMPOSITE help The HID gadget driver provides generic emulation of USB Human Interface Devices (HID). @@ -921,8 +1128,11 @@ config USB_G_HID Say "y" to link the driver statically, or "m" to build a dynamically linked module called "g_hid". +# Standalone / single function gadgets config USB_G_DBGP tristate "EHCI Debug Device Gadget" + depends on TTY + select USB_LIBCOMPOSITE help This gadget emulates an EHCI Debug device. This is useful when you want to interact with an EHCI Debug Port. @@ -943,6 +1153,7 @@ config USB_G_DBGP_PRINTK config USB_G_DBGP_SERIAL depends on USB_G_DBGP + select USB_U_SERIAL bool "serial" help Userland can interact using /dev/ttyGSxxx. @@ -954,6 +1165,8 @@ endif config USB_G_WEBCAM tristate "USB Webcam Gadget" depends on VIDEO_DEV + select USB_LIBCOMPOSITE + select VIDEOBUF2_VMALLOC help The Webcam Gadget acts as a composite USB Audio and Video Class device. It provides a userspace API to process UVC control requests diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index b7f6eefc392..49514ea60a9 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -1,36 +1,68 @@ # # USB peripheral controller drivers # -ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG +ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG +ccflags-$(CONFIG_USB_GADGET_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_GADGET) += udc-core.o +obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o +libcomposite-y := usbstring.o config.o epautoconf.o +libcomposite-y += composite.o functions.o configfs.o u_f.o obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o obj-$(CONFIG_USB_NET2272) += net2272.o obj-$(CONFIG_USB_NET2280) += net2280.o obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o -obj-$(CONFIG_USB_IMX) += imx_udc.o obj-$(CONFIG_USB_GOKU) += goku_udc.o obj-$(CONFIG_USB_OMAP) += omap_udc.o obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o obj-$(CONFIG_USB_AT91) += at91_udc.o obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o +obj-$(CONFIG_USB_BCM63XX_UDC) += bcm63xx_udc.o obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o fsl_usb2_udc-y := fsl_udc_core.o fsl_usb2_udc-$(CONFIG_ARCH_MXC) += fsl_mxc_udc.o obj-$(CONFIG_USB_M66592) += m66592-udc.o obj-$(CONFIG_USB_R8A66597) += r8a66597-udc.o obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o -obj-$(CONFIG_USB_CI13XXX_PCI) += ci13xxx_pci.o -obj-$(CONFIG_USB_S3C_HSOTG) += s3c-hsotg.o obj-$(CONFIG_USB_S3C_HSUDC) += s3c-hsudc.o -obj-$(CONFIG_USB_LANGWELL) += langwell_udc.o +obj-$(CONFIG_USB_LPC32XX) += lpc32xx_udc.o obj-$(CONFIG_USB_EG20T) += pch_udc.o obj-$(CONFIG_USB_MV_UDC) += mv_udc.o mv_udc-y := mv_udc_core.o -obj-$(CONFIG_USB_CI13XXX_MSM) += ci13xxx_msm.o obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o +obj-$(CONFIG_USB_FOTG210_UDC) += fotg210-udc.o +obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o +obj-$(CONFIG_USB_GR_UDC) += gr_udc.o + +# USB Functions +usb_f_acm-y := f_acm.o +obj-$(CONFIG_USB_F_ACM) += usb_f_acm.o +usb_f_ss_lb-y := f_loopback.o f_sourcesink.o +obj-$(CONFIG_USB_F_SS_LB) += usb_f_ss_lb.o +obj-$(CONFIG_USB_U_SERIAL) += u_serial.o +usb_f_serial-y := f_serial.o +obj-$(CONFIG_USB_F_SERIAL) += usb_f_serial.o +usb_f_obex-y := f_obex.o +obj-$(CONFIG_USB_F_OBEX) += usb_f_obex.o +obj-$(CONFIG_USB_U_ETHER) += u_ether.o +usb_f_ncm-y := f_ncm.o +obj-$(CONFIG_USB_F_NCM) += usb_f_ncm.o +usb_f_ecm-y := f_ecm.o +obj-$(CONFIG_USB_F_ECM) += usb_f_ecm.o +usb_f_phonet-y := f_phonet.o +obj-$(CONFIG_USB_F_PHONET) += usb_f_phonet.o +usb_f_eem-y := f_eem.o +obj-$(CONFIG_USB_F_EEM) += usb_f_eem.o +usb_f_ecm_subset-y := f_subset.o +obj-$(CONFIG_USB_F_SUBSET) += usb_f_ecm_subset.o +usb_f_rndis-y := f_rndis.o rndis.o +obj-$(CONFIG_USB_F_RNDIS) += usb_f_rndis.o +usb_f_mass_storage-y := f_mass_storage.o storage_common.o +obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o +usb_f_fs-y := f_fs.o +obj-$(CONFIG_USB_F_FS) += usb_f_fs.o # # USB gadget drivers @@ -41,7 +73,6 @@ g_ether-y := ether.o g_serial-y := serial.o g_midi-y := gmidi.o gadgetfs-y := inode.o -g_file_storage-y := file_storage.o g_mass_storage-y := mass_storage.o g_printer-y := printer.o g_cdc-y := cdc2.o @@ -52,13 +83,13 @@ g_nokia-y := nokia.o g_webcam-y := webcam.o g_ncm-y := ncm.o g_acm_ms-y := acm_ms.o +g_tcm_usb_gadget-y := tcm_usb_gadget.o obj-$(CONFIG_USB_ZERO) += g_zero.o obj-$(CONFIG_USB_AUDIO) += g_audio.o obj-$(CONFIG_USB_ETH) += g_ether.o obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o obj-$(CONFIG_USB_FUNCTIONFS) += g_ffs.o -obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o obj-$(CONFIG_USB_MASS_STORAGE) += g_mass_storage.o obj-$(CONFIG_USB_G_SERIAL) += g_serial.o obj-$(CONFIG_USB_G_PRINTER) += g_printer.o @@ -71,3 +102,4 @@ obj-$(CONFIG_USB_G_NOKIA) += g_nokia.o obj-$(CONFIG_USB_G_WEBCAM) += g_webcam.o obj-$(CONFIG_USB_G_NCM) += g_ncm.o obj-$(CONFIG_USB_G_ACM_MS) += g_acm_ms.o +obj-$(CONFIG_USB_GADGET_TARGET) += tcm_usb_gadget.o diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index fdb7aec3bd0..a252444cc0a 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -15,7 +15,7 @@ */ #include <linux/kernel.h> -#include <linux/utsname.h> +#include <linux/module.h> #include "u_serial.h" @@ -31,25 +31,10 @@ #define ACM_MS_VENDOR_NUM 0x1d6b /* Linux Foundation */ #define ACM_MS_PRODUCT_NUM 0x0106 /* Composite Gadget: ACM + MS*/ -/*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ - -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" -#include "u_serial.c" -#include "f_acm.c" -#include "f_mass_storage.c" +#include "f_mass_storage.h" /*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, @@ -89,17 +74,11 @@ static const struct usb_descriptor_header *otg_desc[] = { NULL, }; - /* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 - -static char manufacturer[50]; - static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", { } /* end of list */ }; @@ -116,17 +95,35 @@ static struct usb_gadget_strings *dev_strings[] = { /****************************** Configurations ******************************/ static struct fsg_module_parameters fsg_mod_data = { .stall = 1 }; -FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS; + +#else -static struct fsg_common fsg_common; +/* + * Number of buffers we will use. + * 2 is usually enough for good buffering pipeline + */ +#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS + +#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ + +FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); /*-------------------------------------------------------------------------*/ +static struct usb_function *f_acm; +static struct usb_function_instance *f_acm_inst; + +static struct usb_function_instance *fi_msg; +static struct usb_function *f_msg; /* * We _always_ have both ACM and mass storage functions. */ static int __init acm_ms_do_config(struct usb_configuration *c) { + struct fsg_opts *opts; int status; if (gadget_is_otg(c->cdev->gadget)) { @@ -134,16 +131,38 @@ static int __init acm_ms_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } + opts = fsg_opts_from_func_inst(fi_msg); - status = acm_bind_config(c, 0); - if (status < 0) - return status; + f_acm = usb_get_function(f_acm_inst); + if (IS_ERR(f_acm)) + return PTR_ERR(f_acm); + + f_msg = usb_get_function(fi_msg); + if (IS_ERR(f_msg)) { + status = PTR_ERR(f_msg); + goto put_acm; + } - status = fsg_bind_config(c->cdev, c, &fsg_common); + status = usb_add_function(c, f_acm); if (status < 0) - return status; + goto put_msg; + + status = fsg_common_run_thread(opts->common); + if (status) + goto remove_acm; + + status = usb_add_function(c, f_msg); + if (status) + goto remove_acm; return 0; +remove_acm: + usb_remove_function(c, f_acm); +put_msg: + usb_put_function(f_msg); +put_acm: + usb_put_function(f_acm); + return status; } static struct usb_configuration acm_ms_config_driver = { @@ -157,85 +176,94 @@ static struct usb_configuration acm_ms_config_driver = { static int __init acm_ms_bind(struct usb_composite_dev *cdev) { - int gcnum; struct usb_gadget *gadget = cdev->gadget; + struct fsg_opts *opts; + struct fsg_config config; int status; - void *retp; - /* set up serial link layer */ - status = gserial_setup(cdev->gadget, 1); - if (status < 0) - return status; + f_acm_inst = usb_get_function_instance("acm"); + if (IS_ERR(f_acm_inst)) + return PTR_ERR(f_acm_inst); - /* set up mass storage function */ - retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data); - if (IS_ERR(retp)) { - status = PTR_ERR(retp); - goto fail0; + fi_msg = usb_get_function_instance("mass_storage"); + if (IS_ERR(fi_msg)) { + status = PTR_ERR(fi_msg); + goto fail_get_msg; } - /* set bcdDevice */ - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) { - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - } else { - WARNING(cdev, "controller '%s' not recognized; trying %s\n", - gadget->name, - acm_ms_config_driver.label); - device_desc.bcdDevice = - cpu_to_le16(0x0300 | 0x0099); - } + /* set up mass storage function */ + fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers); + opts = fsg_opts_from_func_inst(fi_msg); + + opts->no_configfs = true; + status = fsg_common_set_num_buffers(opts->common, fsg_num_buffers); + if (status) + goto fail; + + status = fsg_common_set_nluns(opts->common, config.nluns); + if (status) + goto fail_set_nluns; + + status = fsg_common_set_cdev(opts->common, cdev, config.can_stall); + if (status) + goto fail_set_cdev; + + fsg_common_set_sysfs(opts->common, true); + status = fsg_common_create_luns(opts->common, &config); + if (status) + goto fail_set_cdev; + fsg_common_set_inquiry_string(opts->common, config.vendor_name, + config.product_name); /* * Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - - /* device descriptor strings: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - status = usb_string_id(cdev); - if (status < 0) - goto fail1; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) - goto fail1; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; + goto fail_string_ids; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; /* register our configuration */ status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config); if (status < 0) - goto fail1; + goto fail_string_ids; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", DRIVER_DESC); - fsg_common_put(&fsg_common); return 0; /* error recovery */ -fail1: - fsg_common_put(&fsg_common); -fail0: - gserial_cleanup(); +fail_string_ids: + fsg_common_remove_luns(opts->common); +fail_set_cdev: + fsg_common_free_luns(opts->common); +fail_set_nluns: + fsg_common_free_buffers(opts->common); +fail: + usb_put_function_instance(fi_msg); +fail_get_msg: + usb_put_function_instance(f_acm_inst); return status; } static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) { - gserial_cleanup(); - + usb_put_function(f_msg); + usb_put_function_instance(fi_msg); + usb_put_function(f_acm); + usb_put_function_instance(f_acm_inst); return 0; } -static struct usb_composite_driver acm_ms_driver = { +static __refdata struct usb_composite_driver acm_ms_driver = { .name = "g_acm_ms", .dev = &device_desc, + .max_speed = USB_SPEED_SUPER, .strings = dev_strings, + .bind = acm_ms_bind, .unbind = __exit_p(acm_ms_unbind), }; @@ -245,7 +273,7 @@ MODULE_LICENSE("GPL v2"); static int __init init(void) { - return usb_composite_probe(&acm_ms_driver, acm_ms_bind); + return usb_composite_probe(&acm_ms_driver); } module_init(init); diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index c16ff55a74e..41b062eb4de 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -29,7 +29,7 @@ /* Driver strings */ #define UDC_MOD_DESCRIPTION "AMD 5536 UDC - USB Device Controller" -#define UDC_DRIVER_VERSION_STRING "01.00.0206 - $Revision: #3 $" +#define UDC_DRIVER_VERSION_STRING "01.00.0206" /* system */ #include <linux/module.h> @@ -40,7 +40,6 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> @@ -54,7 +53,6 @@ #include <linux/prefetch.h> #include <asm/byteorder.h> -#include <asm/system.h> #include <asm/unaligned.h> /* gadget stack */ @@ -140,7 +138,7 @@ static DECLARE_TASKLET(disconnect_tasklet, udc_tasklet_disconnect, /* endpoint names used for print */ static const char ep0_string[] = "ep0in"; -static const char *ep_string[] = { +static const char *const ep_string[] = { ep0_string, "ep1in-int", "ep2in-bulk", "ep3in-bulk", "ep4in-bulk", "ep5in-bulk", "ep6in-bulk", "ep7in-bulk", "ep8in-bulk", "ep9in-bulk", "ep10in-bulk", @@ -204,9 +202,8 @@ static void print_regs(struct udc *dev) DBG(dev, "DMA mode = BF (buffer fill mode)\n"); dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "BF"); } - if (!use_dma) { + if (!use_dma) dev_info(&dev->pdev->dev, "FIFO mode\n"); - } DBG(dev, "-------------------------------------------------------\n"); } @@ -335,7 +332,7 @@ udc_ep_enable(struct usb_ep *usbep, const struct usb_endpoint_descriptor *desc) return -ESHUTDOWN; spin_lock_irqsave(&dev->lock, iflags); - ep->desc = desc; + ep->ep.desc = desc; ep->halted = 0; @@ -444,11 +441,11 @@ static void ep_init(struct udc_regs __iomem *regs, struct udc_ep *ep) u32 tmp; VDBG(ep->dev, "ep-%d reset\n", ep->num); - ep->desc = NULL; + ep->ep.desc = NULL; ep->ep.ops = &udc_ep_ops; INIT_LIST_HEAD(&ep->queue); - ep->ep.maxpacket = (u16) ~0; + usb_ep_set_maxpacket_limit(&ep->ep,(u16) ~0); /* set NAK */ tmp = readl(&ep->regs->ctl); tmp |= AMD_BIT(UDC_EPCTL_SNAK); @@ -490,7 +487,7 @@ static int udc_ep_disable(struct usb_ep *usbep) return -EINVAL; ep = container_of(usbep, struct udc_ep, ep); - if (usbep->name == ep0_string || !ep->desc) + if (usbep->name == ep0_string || !ep->ep.desc) return -EINVAL; DBG(ep->dev, "Disable ep-%d\n", ep->num); @@ -569,9 +566,8 @@ udc_free_request(struct usb_ep *usbep, struct usb_request *usbreq) VDBG(ep->dev, "req->td_data=%p\n", req->td_data); /* free dma chain if created */ - if (req->chain_len > 1) { + if (req->chain_len > 1) udc_free_dma_chain(ep->dev, req); - } pci_pool_free(ep->dev->data_requests, req->td_data, req->td_phys); @@ -639,9 +635,8 @@ udc_txfifo_write(struct udc_ep *ep, struct usb_request *req) bytes = remaining; /* dwords first */ - for (i = 0; i < bytes / UDC_DWORD_BYTES; i++) { + for (i = 0; i < bytes / UDC_DWORD_BYTES; i++) writel(*(buf + i), ep->txfifo); - } /* remaining bytes must be written by byte access */ for (j = 0; j < bytes % UDC_DWORD_BYTES; j++) { @@ -660,9 +655,8 @@ static int udc_rxfifo_read_dwords(struct udc *dev, u32 *buf, int dwords) VDBG(dev, "udc_read_dwords(): %d dwords\n", dwords); - for (i = 0; i < dwords; i++) { + for (i = 0; i < dwords; i++) *(buf + i) = readl(dev->rxfifo); - } return 0; } @@ -675,9 +669,8 @@ static int udc_rxfifo_read_bytes(struct udc *dev, u8 *buf, int bytes) VDBG(dev, "udc_read_bytes(): %d bytes\n", bytes); /* dwords first */ - for (i = 0; i < bytes / UDC_DWORD_BYTES; i++) { + for (i = 0; i < bytes / UDC_DWORD_BYTES; i++) *((u32 *)(buf + (i<<2))) = readl(dev->rxfifo); - } /* remaining bytes must be read by byte access */ if (bytes % UDC_DWORD_BYTES) { @@ -831,20 +824,8 @@ __acquires(ep->dev->lock) dev = ep->dev; /* unmap DMA */ - if (req->dma_mapping) { - if (ep->in) - pci_unmap_single(dev->pdev, - req->req.dma, - req->req.length, - PCI_DMA_TODEVICE); - else - pci_unmap_single(dev->pdev, - req->req.dma, - req->req.length, - PCI_DMA_FROMDEVICE); - req->dma_mapping = 0; - req->req.dma = DMA_DONT_USE; - } + if (ep->dma) + usb_gadget_unmap_request(&dev->gadget, &req->req, ep->in); halted = ep->halted; ep->halted = 1; @@ -897,9 +878,8 @@ static struct udc_data_dma *udc_get_last_dma_desc(struct udc_request *req) struct udc_data_dma *td; td = req->td_data; - while (td && !(td->status & AMD_BIT(UDC_DMA_IN_STS_L))) { + while (td && !(td->status & AMD_BIT(UDC_DMA_IN_STS_L))) td = phys_to_virt(td->next); - } return td; @@ -949,21 +929,18 @@ static int udc_create_dma_chain( dma_addr = DMA_DONT_USE; /* unset L bit in first desc for OUT */ - if (!ep->in) { + if (!ep->in) req->td_data->status &= AMD_CLEAR_BIT(UDC_DMA_IN_STS_L); - } /* alloc only new desc's if not already available */ len = req->req.length / ep->ep.maxpacket; - if (req->req.length % ep->ep.maxpacket) { + if (req->req.length % ep->ep.maxpacket) len++; - } if (len > req->chain_len) { /* shorter chain already allocated before */ - if (req->chain_len > 1) { + if (req->chain_len > 1) udc_free_dma_chain(ep->dev, req); - } req->chain_len = len; create_new_chain = 1; } @@ -1006,11 +983,12 @@ static int udc_create_dma_chain( /* link td and assign tx bytes */ if (i == buf_len) { - if (create_new_chain) { + if (create_new_chain) req->td_data->next = dma_addr; - } else { - /* req->td_data->next = virt_to_phys(td); */ - } + /* + else + req->td_data->next = virt_to_phys(td); + */ /* write tx bytes */ if (ep->in) { /* first desc */ @@ -1024,11 +1002,12 @@ static int udc_create_dma_chain( UDC_DMA_IN_STS_TXBYTES); } } else { - if (create_new_chain) { + if (create_new_chain) last->next = dma_addr; - } else { - /* last->next = virt_to_phys(td); */ - } + /* + else + last->next = virt_to_phys(td); + */ if (ep->in) { /* write tx bytes */ td->status = AMD_ADDBITS(td->status, @@ -1085,7 +1064,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) return -EINVAL; ep = container_of(usbep, struct udc_ep, ep); - if (!ep->desc && (ep->num != 0 && ep->num != UDC_EP0OUT_IX)) + if (!ep->ep.desc && (ep->num != 0 && ep->num != UDC_EP0OUT_IX)) return -EINVAL; VDBG(ep->dev, "udc_queue(): ep%d-in=%d\n", ep->num, ep->in); @@ -1095,20 +1074,11 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) return -ESHUTDOWN; /* map dma (usually done before) */ - if (ep->dma && usbreq->length != 0 - && (usbreq->dma == DMA_DONT_USE || usbreq->dma == 0)) { + if (ep->dma) { VDBG(dev, "DMA map req %p\n", req); - if (ep->in) - usbreq->dma = pci_map_single(dev->pdev, - usbreq->buf, - usbreq->length, - PCI_DMA_TODEVICE); - else - usbreq->dma = pci_map_single(dev->pdev, - usbreq->buf, - usbreq->length, - PCI_DMA_FROMDEVICE); - req->dma_mapping = 1; + retval = usb_gadget_map_request(&udc->gadget, usbreq, ep->in); + if (retval) + return retval; } VDBG(dev, "%s queue req %p, len %d req->td_data=%p buf %p\n", @@ -1151,7 +1121,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) goto finished; } if (ep->dma) { - retval = prep_dma(ep, req, gfp); + retval = prep_dma(ep, req, GFP_ATOMIC); if (retval != 0) goto finished; /* write desc pointer to enable DMA */ @@ -1219,7 +1189,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) * for PPB modes, because of chain creation reasons */ if (ep->in) { - retval = prep_dma(ep, req, gfp); + retval = prep_dma(ep, req, GFP_ATOMIC); if (retval != 0) goto finished; } @@ -1285,7 +1255,7 @@ static int udc_dequeue(struct usb_ep *usbep, struct usb_request *usbreq) unsigned long iflags; ep = container_of(usbep, struct udc_ep, ep); - if (!usbep || !usbreq || (!ep->desc && (ep->num != 0 + if (!usbep || !usbreq || (!ep->ep.desc && (ep->num != 0 && ep->num != UDC_EP0OUT_IX))) return -EINVAL; @@ -1345,7 +1315,7 @@ udc_set_halt(struct usb_ep *usbep, int halt) pr_debug("set_halt %s: halt=%d\n", usbep->name, halt); ep = container_of(usbep, struct udc_ep, ep); - if (!ep->desc && (ep->num != 0 && ep->num != UDC_EP0OUT_IX)) + if (!ep->ep.desc && (ep->num != 0 && ep->num != UDC_EP0OUT_IX)) return -EINVAL; if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; @@ -1429,15 +1399,16 @@ static int udc_wakeup(struct usb_gadget *gadget) return 0; } -static int amd5536_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int amd5536_stop(struct usb_gadget_driver *driver); +static int amd5536_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int amd5536_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); /* gadget operations */ static const struct usb_gadget_ops udc_ops = { .wakeup = udc_wakeup, .get_frame = udc_get_frame, - .start = amd5536_start, - .stop = amd5536_stop, + .udc_start = amd5536_udc_start, + .udc_stop = amd5536_udc_stop, }; /* Setups endpoint parameters, adds endpoints to linked list */ @@ -1479,11 +1450,10 @@ static int startup_registers(struct udc *dev) /* program speed */ tmp = readl(&dev->regs->cfg); - if (use_fullspeed) { + if (use_fullspeed) tmp = AMD_ADDBITS(tmp, UDC_DEVCFG_SPD_FS, UDC_DEVCFG_SPD); - } else { + else tmp = AMD_ADDBITS(tmp, UDC_DEVCFG_SPD_HS, UDC_DEVCFG_SPD); - } writel(tmp, &dev->regs->cfg); return 0; @@ -1504,9 +1474,8 @@ static void udc_basic_init(struct udc *dev) mod_timer(&udc_timer, jiffies - 1); } /* stop poll stall timer */ - if (timer_pending(&udc_pollstall_timer)) { + if (timer_pending(&udc_pollstall_timer)) mod_timer(&udc_pollstall_timer, jiffies - 1); - } /* disable DMA */ tmp = readl(&dev->regs->ctl); tmp &= AMD_UNMASK_BIT(UDC_DEVCTL_RDE); @@ -1540,11 +1509,10 @@ static void udc_setup_endpoints(struct udc *dev) /* read enum speed */ tmp = readl(&dev->regs->sts); tmp = AMD_GETBITS(tmp, UDC_DEVSTS_ENUM_SPEED); - if (tmp == UDC_DEVSTS_ENUM_SPEED_HIGH) { + if (tmp == UDC_DEVSTS_ENUM_SPEED_HIGH) dev->gadget.speed = USB_SPEED_HIGH; - } else if (tmp == UDC_DEVSTS_ENUM_SPEED_FULL) { + else if (tmp == UDC_DEVSTS_ENUM_SPEED_FULL) dev->gadget.speed = USB_SPEED_FULL; - } /* set basic ep parameters */ for (tmp = 0; tmp < UDC_EP_NUM; tmp++) { @@ -1570,9 +1538,8 @@ static void udc_setup_endpoints(struct udc *dev) * disabling ep interrupts when ENUM interrupt occurs but ep is * not enabled by gadget driver */ - if (!ep->desc) { + if (!ep->ep.desc) ep_init(dev->regs, ep); - } if (use_dma) { /* @@ -1596,12 +1563,15 @@ static void udc_setup_endpoints(struct udc *dev) } /* EP0 max packet */ if (dev->gadget.speed == USB_SPEED_FULL) { - dev->ep[UDC_EP0IN_IX].ep.maxpacket = UDC_FS_EP0IN_MAX_PKT_SIZE; - dev->ep[UDC_EP0OUT_IX].ep.maxpacket = - UDC_FS_EP0OUT_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0IN_IX].ep, + UDC_FS_EP0IN_MAX_PKT_SIZE); + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0OUT_IX].ep, + UDC_FS_EP0OUT_MAX_PKT_SIZE); } else if (dev->gadget.speed == USB_SPEED_HIGH) { - dev->ep[UDC_EP0IN_IX].ep.maxpacket = UDC_EP0IN_MAX_PKT_SIZE; - dev->ep[UDC_EP0OUT_IX].ep.maxpacket = UDC_EP0OUT_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0IN_IX].ep, + UDC_EP0IN_MAX_PKT_SIZE); + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0OUT_IX].ep, + UDC_EP0OUT_MAX_PKT_SIZE); } /* @@ -1670,9 +1640,8 @@ static void udc_tasklet_disconnect(unsigned long par) spin_lock(&dev->lock); /* empty queues */ - for (tmp = 0; tmp < UDC_EP_NUM; tmp++) { + for (tmp = 0; tmp < UDC_EP_NUM; tmp++) empty_req_queue(&dev->ep[tmp]); - } } @@ -1746,9 +1715,8 @@ static void udc_timer_function(unsigned long v) * open the fifo */ udc_timer.expires = jiffies + HZ/UDC_RDE_TIMER_DIV; - if (!stop_timer) { + if (!stop_timer) add_timer(&udc_timer); - } } else { /* * fifo contains data now, setup timer for opening @@ -1760,9 +1728,8 @@ static void udc_timer_function(unsigned long v) set_rde++; /* debug: lhadmot_timer_start = 221070 */ udc_timer.expires = jiffies + HZ*UDC_RDE_TIMER_SECONDS; - if (!stop_timer) { + if (!stop_timer) add_timer(&udc_timer); - } } } else @@ -1907,19 +1874,17 @@ static void activate_control_endpoints(struct udc *dev) mod_timer(&udc_timer, jiffies - 1); } /* stop pollstall timer */ - if (timer_pending(&udc_pollstall_timer)) { + if (timer_pending(&udc_pollstall_timer)) mod_timer(&udc_pollstall_timer, jiffies - 1); - } /* enable DMA */ tmp = readl(&dev->regs->ctl); tmp |= AMD_BIT(UDC_DEVCTL_MODE) | AMD_BIT(UDC_DEVCTL_RDE) | AMD_BIT(UDC_DEVCTL_TDE); - if (use_dma_bufferfill_mode) { + if (use_dma_bufferfill_mode) tmp |= AMD_BIT(UDC_DEVCTL_BF); - } else if (use_dma_ppb_du) { + else if (use_dma_ppb_du) tmp |= AMD_BIT(UDC_DEVCTL_DU); - } writel(tmp, &dev->regs->ctl); } @@ -1951,26 +1916,14 @@ static int setup_ep0(struct udc *dev) } /* Called by gadget driver to register itself */ -static int amd5536_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int amd5536_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct udc *dev = udc; - int retval; + struct udc *dev = to_amd5536_udc(g); u32 tmp; - if (!driver || !bind || !driver->setup - || driver->max_speed < USB_SPEED_HIGH) - return -EINVAL; - if (!dev) - return -ENODEV; - if (dev->driver) - return -EBUSY; - driver->driver.bus = NULL; dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; - - retval = bind(&dev->gadget); /* Some gadget drivers use both ep0 directions. * NOTE: to gadget driver, ep0 is just one endpoint... @@ -1978,14 +1931,6 @@ static int amd5536_start(struct usb_gadget_driver *driver, dev->ep[UDC_EP0OUT_IX].ep.driver_data = dev->ep[UDC_EP0IN_IX].ep.driver_data; - if (retval) { - DBG(dev, "binding to %s returning %d\n", - driver->driver.name, retval); - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } - /* get ready for ep0 traffic */ setup_ep0(dev); @@ -2007,14 +1952,9 @@ __acquires(dev->lock) { int tmp; - if (dev->gadget.speed != USB_SPEED_UNKNOWN) { - spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } - /* empty queues and init hardware */ udc_basic_init(dev); + for (tmp = 0; tmp < UDC_EP_NUM; tmp++) empty_req_queue(&dev->ep[tmp]); @@ -2022,24 +1962,18 @@ __acquires(dev->lock) } /* Called by gadget driver to unregister itself */ -static int amd5536_stop(struct usb_gadget_driver *driver) +static int amd5536_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct udc *dev = udc; - unsigned long flags; + struct udc *dev = to_amd5536_udc(g); + unsigned long flags; u32 tmp; - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver || !driver->unbind) - return -EINVAL; - spin_lock_irqsave(&dev->lock, flags); udc_mask_unused_interrupts(dev); shutdown(dev, driver); spin_unlock_irqrestore(&dev->lock, flags); - driver->unbind(&dev->gadget); - dev->gadget.dev.driver = NULL; dev->driver = NULL; /* set SD */ @@ -2047,9 +1981,6 @@ static int amd5536_stop(struct usb_gadget_driver *driver) tmp |= AMD_BIT(UDC_DEVCTL_SD); writel(tmp, &dev->regs->ctl); - - DBG(dev, "%s: unregistered\n", driver->driver.name); - return 0; } @@ -2104,9 +2035,8 @@ static void udc_ep0_set_rde(struct udc *dev) udc_timer.expires = jiffies + HZ/UDC_RDE_TIMER_DIV; set_rde = 1; - if (!stop_timer) { + if (!stop_timer) add_timer(&udc_timer); - } } } } @@ -2131,7 +2061,7 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix) if (use_dma) { /* BNA event ? */ if (tmp & AMD_BIT(UDC_EPSTS_BNA)) { - DBG(dev, "BNA ep%dout occurred - DESPTR = %x \n", + DBG(dev, "BNA ep%dout occurred - DESPTR = %x\n", ep->num, readl(&ep->regs->desptr)); /* clear BNA */ writel(tmp | AMD_BIT(UDC_EPSTS_BNA), &ep->regs->sts); @@ -2294,9 +2224,8 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix) jiffies + HZ*UDC_RDE_TIMER_SECONDS; set_rde = 1; - if (!stop_timer) { + if (!stop_timer) add_timer(&udc_timer); - } } if (ep->num != UDC_EP0OUT_IX) dev->data_ep_queued = 0; @@ -2318,9 +2247,8 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix) /* check pending CNAKS */ if (cnak_pending) { /* CNAk processing when rxfifo empty only */ - if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY)) { + if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY)) udc_process_cnak_queue(dev); - } } /* clear OUT bits in ep status */ @@ -2348,7 +2276,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix) /* BNA ? */ if (epsts & AMD_BIT(UDC_EPSTS_BNA)) { dev_err(&dev->pdev->dev, - "BNA ep%din occurred - DESPTR = %08lx \n", + "BNA ep%din occurred - DESPTR = %08lx\n", ep->num, (unsigned long) readl(&ep->regs->desptr)); @@ -2361,7 +2289,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix) /* HE event ? */ if (epsts & AMD_BIT(UDC_EPSTS_HE)) { dev_err(&dev->pdev->dev, - "HE ep%dn occurred - DESPTR = %08lx \n", + "HE ep%dn occurred - DESPTR = %08lx\n", ep->num, (unsigned long) readl(&ep->regs->desptr)); /* clear HE */ @@ -2427,9 +2355,9 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix) /* write fifo */ udc_txfifo_write(ep, &req->req); len = req->req.length - req->req.actual; - if (len > ep->ep.maxpacket) - len = ep->ep.maxpacket; - req->req.actual += len; + if (len > ep->ep.maxpacket) + len = ep->ep.maxpacket; + req->req.actual += len; if (req->req.actual == req->req.length || (len != ep->ep.maxpacket)) { /* complete req */ @@ -2581,9 +2509,8 @@ __acquires(dev->lock) if (!timer_pending(&udc_timer)) { udc_timer.expires = jiffies + HZ/UDC_RDE_TIMER_DIV; - if (!stop_timer) { + if (!stop_timer) add_timer(&udc_timer); - } } } @@ -2697,9 +2624,8 @@ __acquires(dev->lock) /* check pending CNAKS */ if (cnak_pending) { /* CNAk processing when rxfifo empty only */ - if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY)) { + if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY)) udc_process_cnak_queue(dev); - } } finished: @@ -2723,7 +2649,7 @@ static irqreturn_t udc_control_in_isr(struct udc *dev) tmp = readl(&dev->ep[UDC_EP0IN_IX].regs->sts); /* DMA completion */ if (tmp & AMD_BIT(UDC_EPSTS_TDC)) { - VDBG(dev, "isr: TDC clear \n"); + VDBG(dev, "isr: TDC clear\n"); ret_val = IRQ_HANDLED; /* clear TDC bit */ @@ -3154,9 +3080,6 @@ static void udc_pci_remove(struct pci_dev *pdev) if (dev->active) pci_disable_device(pdev); - device_unregister(&dev->gadget.dev); - pci_set_drvdata(pdev, NULL); - udc_remove(dev); } @@ -3274,7 +3197,7 @@ static int udc_pci_probe( } if (!pdev->irq) { - dev_err(&dev->pdev->dev, "irq not set\n"); + dev_err(&pdev->dev, "irq not set\n"); kfree(dev); dev = NULL; retval = -ENODEV; @@ -3293,7 +3216,7 @@ static int udc_pci_probe( dev->txfifo = (u32 __iomem *)(dev->virt_addr + UDC_TXFIFO_ADDR); if (request_irq(pdev->irq, udc_irq, IRQF_SHARED, name, dev) != 0) { - dev_dbg(&dev->pdev->dev, "request_irq(%d) fail\n", pdev->irq); + dev_dbg(&pdev->dev, "request_irq(%d) fail\n", pdev->irq); kfree(dev); dev = NULL; retval = -EBUSY; @@ -3319,8 +3242,6 @@ static int udc_pci_probe( dev->phys_addr = resource; dev->irq = pdev->irq; dev->pdev = pdev; - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; /* general probing */ if (udc_probe(dev) == 0) @@ -3347,7 +3268,6 @@ static int udc_probe(struct udc *dev) dev->gadget.ops = &udc_ops; dev_set_name(&dev->gadget.dev, "gadget"); - dev->gadget.dev.release = gadget_release; dev->gadget.name = name; dev->gadget.max_speed = USB_SPEED_HIGH; @@ -3371,17 +3291,11 @@ static int udc_probe(struct udc *dev) "driver version: %s(for Geode5536 B1)\n", tmp); udc = dev; - retval = usb_add_gadget_udc(&udc->pdev->dev, &dev->gadget); + retval = usb_add_gadget_udc_release(&udc->pdev->dev, &dev->gadget, + gadget_release); if (retval) goto finished; - retval = device_register(&dev->gadget.dev); - if (retval) { - usb_del_gadget_udc(&dev->gadget); - put_device(&dev->gadget.dev); - goto finished; - } - /* timer init */ init_timer(&udc_timer); udc_timer.function = udc_timer_function; @@ -3444,19 +3358,7 @@ static struct pci_driver udc_pci_driver = { .remove = udc_pci_remove, }; -/* Inits driver */ -static int __init init(void) -{ - return pci_register_driver(&udc_pci_driver); -} -module_init(init); - -/* Cleans driver */ -static void __exit cleanup(void) -{ - pci_unregister_driver(&udc_pci_driver); -} -module_exit(cleanup); +module_pci_driver(udc_pci_driver); MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION); MODULE_AUTHOR("Thomas Dahlmann"); diff --git a/drivers/usb/gadget/amd5536udc.h b/drivers/usb/gadget/amd5536udc.h index f87e29c6532..6744d3b8310 100644 --- a/drivers/usb/gadget/amd5536udc.h +++ b/drivers/usb/gadget/amd5536udc.h @@ -472,7 +472,6 @@ struct udc_request { /* flags */ unsigned dma_going : 1, - dma_mapping : 1, dma_done : 1; /* phys. address */ dma_addr_t td_phys; @@ -512,7 +511,6 @@ struct udc_ep { /* queue for requests */ struct list_head queue; - const struct usb_endpoint_descriptor *desc; unsigned halted; unsigned cancel_transfer; unsigned num : 5, @@ -564,6 +562,8 @@ struct udc { u16 cur_alt; }; +#define to_amd5536_udc(g) (container_of((g), struct udc, gadget)) + /* setup request data */ union udc_setup_data { u32 data[2]; diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 143a7256b59..cfd18bcca72 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -21,7 +21,6 @@ #include <linux/ioport.h> #include <linux/slab.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/proc_fs.h> @@ -29,18 +28,19 @@ #include <linux/clk.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> -#include <linux/prefetch.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/platform_data/atmel.h> #include <asm/byteorder.h> #include <mach/hardware.h> #include <asm/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/gpio.h> -#include <mach/board.h> #include <mach/cpu.h> #include <mach/at91sam9261_matrix.h> +#include <mach/at91_matrix.h> #include "at91_udc.h" @@ -50,7 +50,7 @@ * full speed USB controllers, including the at91rm9200 (arm920T, with MMU), * at91sam926x (arm926ejs, with MMU), and several no-mmu versions. * - * This driver expects the board has been wired with two GPIOs suppporting + * This driver expects the board has been wired with two GPIOs supporting * a VBUS sensing IRQ, and a D+ pullup. (They may be omitted, but the * testing hasn't covered such cases.) * @@ -211,7 +211,7 @@ static int proc_udc_show(struct seq_file *s, void *unused) if (udc->enabled && udc->vbus) { proc_ep_show(s, &udc->ep[0]); list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { - if (ep->desc) + if (ep->ep.desc) proc_ep_show(s, ep); } } @@ -220,7 +220,7 @@ static int proc_udc_show(struct seq_file *s, void *unused) static int proc_udc_open(struct inode *inode, struct file *file) { - return single_open(file, proc_udc_show, PDE(inode)->data); + return single_open(file, proc_udc_show, PDE_DATA(inode)); } static const struct file_operations proc_ops = { @@ -468,14 +468,13 @@ static int at91_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) { struct at91_ep *ep = container_of(_ep, struct at91_ep, ep); - struct at91_udc *udc = ep->udc; + struct at91_udc *udc; u16 maxpacket; u32 tmp; unsigned long flags; if (!_ep || !ep - || !desc || ep->desc - || _ep->name == ep0name + || !desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT || (maxpacket = usb_endpoint_maxp(desc)) == 0 || maxpacket > ep->maxpacket) { @@ -483,6 +482,7 @@ static int at91_ep_enable(struct usb_ep *_ep, return -EINVAL; } + udc = ep->udc; if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { DBG("bogus device state\n"); return -ESHUTDOWN; @@ -529,7 +529,6 @@ ok: tmp |= AT91_UDP_EPEDS; __raw_writel(tmp, ep->creg); - ep->desc = desc; ep->ep.maxpacket = maxpacket; /* @@ -557,7 +556,7 @@ static int at91_ep_disable (struct usb_ep * _ep) nuke(ep, -ESHUTDOWN); /* restore the endpoint's pristine config */ - ep->desc = NULL; + ep->ep.desc = NULL; ep->ep.maxpacket = ep->maxpacket; /* reset fifos and endpoint */ @@ -616,7 +615,7 @@ static int at91_ep_queue(struct usb_ep *_ep, return -EINVAL; } - if (!_ep || (!ep->desc && ep->ep.name != ep0name)) { + if (!_ep || (!ep->ep.desc && ep->ep.name != ep0name)) { DBG("invalid ep\n"); return -EINVAL; } @@ -831,10 +830,10 @@ static void udc_reinit(struct at91_udc *udc) if (i != 0) list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 0; ep->fifo_bank = 0; - ep->ep.maxpacket = ep->maxpacket; + usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); ep->creg = (void __iomem *) udc->udp_baseaddr + AT91_UDP_CSR(i); /* initialize one queue per endpoint */ INIT_LIST_HEAD(&ep->queue); @@ -870,8 +869,13 @@ static void clk_on(struct at91_udc *udc) if (udc->clocked) return; udc->clocked = 1; - clk_enable(udc->iclk); - clk_enable(udc->fclk); + + if (IS_ENABLED(CONFIG_COMMON_CLK)) { + clk_set_rate(udc->uclk, 48000000); + clk_prepare_enable(udc->uclk); + } + clk_prepare_enable(udc->iclk); + clk_prepare_enable(udc->fclk); } static void clk_off(struct at91_udc *udc) @@ -880,8 +884,10 @@ static void clk_off(struct at91_udc *udc) return; udc->clocked = 0; udc->gadget.speed = USB_SPEED_UNKNOWN; - clk_disable(udc->fclk); - clk_disable(udc->iclk); + clk_disable_unprepare(udc->fclk); + clk_disable_unprepare(udc->iclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_disable_unprepare(udc->uclk); } /* @@ -910,9 +916,9 @@ static void pullup(struct at91_udc *udc, int is_on) } else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) { u32 usbpucr; - usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR); + usbpucr = at91_matrix_read(AT91_MATRIX_USBPUCR); usbpucr |= AT91_MATRIX_USBPUCR_PUON; - at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr); + at91_matrix_write(AT91_MATRIX_USBPUCR, usbpucr); } } else { stop_activity(udc); @@ -928,9 +934,9 @@ static void pullup(struct at91_udc *udc, int is_on) } else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) { u32 usbpucr; - usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR); + usbpucr = at91_matrix_read(AT91_MATRIX_USBPUCR); usbpucr &= ~AT91_MATRIX_USBPUCR_PUON; - at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr); + at91_matrix_write(AT91_MATRIX_USBPUCR, usbpucr); } clk_off(udc); } @@ -976,18 +982,18 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on) return 0; } -static int at91_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int at91_stop(struct usb_gadget_driver *driver); - +static int at91_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); +static int at91_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops at91_udc_ops = { .get_frame = at91_get_frame, .wakeup = at91_wakeup, .set_selfpowered = at91_set_selfpowered, .vbus_session = at91_vbus_session, .pullup = at91_pullup, - .start = at91_start, - .stop = at91_stop, + .udc_start = at91_start, + .udc_stop = at91_stop, /* * VBUS-powered devices may also also want to support bigger @@ -1170,7 +1176,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) | USB_REQ_GET_STATUS: tmp = w_index & USB_ENDPOINT_NUMBER_MASK; ep = &udc->ep[tmp]; - if (tmp >= NUM_ENDPOINTS || (tmp && !ep->desc)) + if (tmp >= NUM_ENDPOINTS || (tmp && !ep->ep.desc)) goto stall; if (tmp) { @@ -1195,7 +1201,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) ep = &udc->ep[tmp]; if (w_value != USB_ENDPOINT_HALT || tmp >= NUM_ENDPOINTS) goto stall; - if (!ep->desc || ep->is_iso) + if (!ep->ep.desc || ep->is_iso) goto stall; if ((w_index & USB_DIR_IN)) { if (!ep->is_in) @@ -1216,7 +1222,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) goto stall; if (tmp == 0) goto succeed; - if (!ep->desc || ep->is_iso) + if (!ep->ep.desc || ep->is_iso) goto stall; if ((w_index & USB_DIR_IN)) { if (!ep->is_in) @@ -1621,72 +1627,36 @@ static void at91_vbus_timer(unsigned long data) * bus such as i2c or spi which may sleep, so schedule some work * to read the vbus gpio */ - if (!work_pending(&udc->vbus_timer_work)) - schedule_work(&udc->vbus_timer_work); + schedule_work(&udc->vbus_timer_work); } -static int at91_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int at91_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct at91_udc *udc = &controller; - int retval; - unsigned long flags; - - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->setup) { - DBG("bad parameter.\n"); - return -EINVAL; - } - - if (udc->driver) { - DBG("UDC already has a gadget driver\n"); - return -EBUSY; - } + struct at91_udc *udc; + udc = container_of(gadget, struct at91_udc, gadget); udc->driver = driver; - udc->gadget.dev.driver = &driver->driver; - dev_set_drvdata(&udc->gadget.dev, &driver->driver); + udc->gadget.dev.of_node = udc->pdev->dev.of_node; udc->enabled = 1; udc->selfpowered = 1; - retval = bind(&udc->gadget); - if (retval) { - DBG("bind() returned %d\n", retval); - udc->driver = NULL; - udc->gadget.dev.driver = NULL; - dev_set_drvdata(&udc->gadget.dev, NULL); - udc->enabled = 0; - udc->selfpowered = 0; - return retval; - } - - spin_lock_irqsave(&udc->lock, flags); - pullup(udc, 1); - spin_unlock_irqrestore(&udc->lock, flags); - DBG("bound to %s\n", driver->driver.name); return 0; } -static int at91_stop(struct usb_gadget_driver *driver) +static int at91_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct at91_udc *udc = &controller; + struct at91_udc *udc; unsigned long flags; - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; - + udc = container_of(gadget, struct at91_udc, gadget); spin_lock_irqsave(&udc->lock, flags); udc->enabled = 0; at91_udp_write(udc, AT91_UDP_IDR, ~0); - pullup(udc, 0); spin_unlock_irqrestore(&udc->lock, flags); - driver->unbind(&udc->gadget); - udc->gadget.dev.driver = NULL; - dev_set_drvdata(&udc->gadget.dev, NULL); udc->driver = NULL; DBG("unbound from %s\n", driver->driver.name); @@ -1706,29 +1676,39 @@ static void at91udc_shutdown(struct platform_device *dev) spin_unlock_irqrestore(&udc->lock, flags); } -static int __init at91udc_probe(struct platform_device *pdev) +static void at91udc_of_init(struct at91_udc *udc, + struct device_node *np) +{ + struct at91_udc_data *board = &udc->board; + u32 val; + enum of_gpio_flags flags; + + if (of_property_read_u32(np, "atmel,vbus-polled", &val) == 0) + board->vbus_polled = 1; + + board->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, + &flags); + board->vbus_active_low = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; + + board->pullup_pin = of_get_named_gpio_flags(np, "atmel,pullup-gpio", 0, + &flags); + + board->pullup_active_low = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; +} + +static int at91udc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct at91_udc *udc; int retval; struct resource *res; - if (!dev->platform_data) { + if (!dev_get_platdata(dev) && !pdev->dev.of_node) { /* small (so we copy it) but critical! */ DBG("missing platform_data\n"); return -ENODEV; } - if (pdev->num_resources != 2) { - DBG("invalid num_resources\n"); - return -ENODEV; - } - if ((pdev->resource[0].flags != IORESOURCE_MEM) - || (pdev->resource[1].flags != IORESOURCE_IRQ)) { - DBG("invalid resource type\n"); - return -ENODEV; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -ENXIO; @@ -1741,14 +1721,18 @@ static int __init at91udc_probe(struct platform_device *pdev) /* init software state */ udc = &controller; udc->gadget.dev.parent = dev; - udc->board = *(struct at91_udc_data *) dev->platform_data; + if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) + at91udc_of_init(udc, pdev->dev.of_node); + else + memcpy(&udc->board, dev_get_platdata(dev), + sizeof(struct at91_udc_data)); udc->pdev = pdev; udc->enabled = 0; spin_lock_init(&udc->lock); /* rm9200 needs manual D+ pullup; off by default */ if (cpu_is_at91rm9200()) { - if (gpio_is_valid(udc->board.pullup_pin)) { + if (!gpio_is_valid(udc->board.pullup_pin)) { DBG("no D+ pullup?\n"); retval = -ENODEV; goto fail0; @@ -1786,26 +1770,24 @@ static int __init at91udc_probe(struct platform_device *pdev) /* get interface and function clocks */ udc->iclk = clk_get(dev, "udc_clk"); udc->fclk = clk_get(dev, "udpck"); - if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) { + if (IS_ENABLED(CONFIG_COMMON_CLK)) + udc->uclk = clk_get(dev, "usb_clk"); + if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk) || + (IS_ENABLED(CONFIG_COMMON_CLK) && IS_ERR(udc->uclk))) { DBG("clocks missing\n"); retval = -ENODEV; - /* NOTE: we "know" here that refcounts on these are NOPs */ - goto fail0b; - } - - retval = device_register(&udc->gadget.dev); - if (retval < 0) { - put_device(&udc->gadget.dev); - goto fail0b; + goto fail1; } /* don't do anything until we have both gadget driver and VBUS */ - clk_enable(udc->iclk); + retval = clk_prepare_enable(udc->iclk); + if (retval) + goto fail1; at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); at91_udp_write(udc, AT91_UDP_IDR, 0xffffffff); /* Clear all pending interrupts - UDP may be used by bootloader. */ at91_udp_write(udc, AT91_UDP_ICR, 0xffffffff); - clk_disable(udc->iclk); + clk_disable_unprepare(udc->iclk); /* request UDC and maybe VBUS irqs */ udc->udp_irq = platform_get_irq(pdev, 0); @@ -1837,8 +1819,8 @@ static int __init at91udc_probe(struct platform_device *pdev) mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT); } else { - if (request_irq(udc->board.vbus_pin, at91_vbus_irq, - 0, driver_name, udc)) { + if (request_irq(gpio_to_irq(udc->board.vbus_pin), + at91_vbus_irq, 0, driver_name, udc)) { DBG("request vbus irq %d failed\n", udc->board.vbus_pin); retval = -EBUSY; @@ -1860,15 +1842,19 @@ static int __init at91udc_probe(struct platform_device *pdev) return 0; fail4: if (gpio_is_valid(udc->board.vbus_pin) && !udc->board.vbus_polled) - free_irq(udc->board.vbus_pin, udc); + free_irq(gpio_to_irq(udc->board.vbus_pin), udc); fail3: if (gpio_is_valid(udc->board.vbus_pin)) gpio_free(udc->board.vbus_pin); fail2: free_irq(udc->udp_irq, udc); fail1: - device_unregister(&udc->gadget.dev); -fail0b: + if (IS_ENABLED(CONFIG_COMMON_CLK) && !IS_ERR(udc->uclk)) + clk_put(udc->uclk); + if (!IS_ERR(udc->fclk)) + clk_put(udc->fclk); + if (!IS_ERR(udc->iclk)) + clk_put(udc->iclk); iounmap(udc->udp_baseaddr); fail0a: if (cpu_is_at91rm9200()) @@ -1898,12 +1884,10 @@ static int __exit at91udc_remove(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); remove_debug_file(udc); if (gpio_is_valid(udc->board.vbus_pin)) { - free_irq(udc->board.vbus_pin, udc); + free_irq(gpio_to_irq(udc->board.vbus_pin), udc); gpio_free(udc->board.vbus_pin); } free_irq(udc->udp_irq, udc); - device_unregister(&udc->gadget.dev); - iounmap(udc->udp_baseaddr); if (cpu_is_at91rm9200()) @@ -1914,6 +1898,8 @@ static int __exit at91udc_remove(struct platform_device *pdev) clk_put(udc->iclk); clk_put(udc->fclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_put(udc->uclk); return 0; } @@ -1970,6 +1956,15 @@ static int at91udc_resume(struct platform_device *pdev) #define at91udc_resume NULL #endif +#if defined(CONFIG_OF) +static const struct of_device_id at91_udc_dt_ids[] = { + { .compatible = "atmel,at91rm9200-udc" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, at91_udc_dt_ids); +#endif + static struct platform_driver at91_udc_driver = { .remove = __exit_p(at91udc_remove), .shutdown = at91udc_shutdown, @@ -1978,20 +1973,11 @@ static struct platform_driver at91_udc_driver = { .driver = { .name = (char *) driver_name, .owner = THIS_MODULE, + .of_match_table = of_match_ptr(at91_udc_dt_ids), }, }; -static int __init udc_init_module(void) -{ - return platform_driver_probe(&at91_udc_driver, at91udc_probe); -} -module_init(udc_init_module); - -static void __exit udc_exit_module(void) -{ - platform_driver_unregister(&at91_udc_driver); -} -module_exit(udc_exit_module); +module_platform_driver_probe(at91_udc_driver, at91udc_probe); MODULE_DESCRIPTION("AT91 udc driver"); MODULE_AUTHOR("Thomas Rathbone, David Brownell"); diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h index 3c0315b86ac..01752466338 100644 --- a/drivers/usb/gadget/at91_udc.h +++ b/drivers/usb/gadget/at91_udc.h @@ -105,9 +105,6 @@ struct at91_ep { unsigned is_in:1; unsigned is_iso:1; unsigned fifo_bank:1; - - const struct usb_endpoint_descriptor - *desc; }; /* @@ -129,7 +126,7 @@ struct at91_udc { unsigned active_suspend:1; u8 addr; struct at91_udc_data board; - struct clk *iclk, *fclk; + struct clk *iclk, *fclk, *uclk; struct platform_device *pdev; struct proc_dir_entry *pde; void __iomem *udp_baseaddr; diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index e2fb6d583bd..76023ce449a 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -21,16 +21,14 @@ #include <linux/usb/gadget.h> #include <linux/usb/atmel_usba_udc.h> #include <linux/delay.h> +#include <linux/platform_data/atmel.h> +#include <linux/of.h> +#include <linux/of_gpio.h> #include <asm/gpio.h> -#include <mach/board.h> #include "atmel_usba_udc.h" - -static struct usba_udc the_udc; -static struct usba_ep *usba_ep; - #ifdef CONFIG_USB_GADGET_DEBUG_FS #include <linux/debugfs.h> #include <linux/uaccess.h> @@ -93,7 +91,7 @@ static ssize_t queue_dbg_read(struct file *file, char __user *buf, if (!access_ok(VERIFY_WRITE, buf, nbytes)) return -EFAULT; - mutex_lock(&file->f_dentry->d_inode->i_mutex); + mutex_lock(&file_inode(file)->i_mutex); list_for_each_entry_safe(req, tmp_req, queue, queue) { len = snprintf(tmpbuf, sizeof(tmpbuf), "%8p %08x %c%c%c %5d %c%c%c\n", @@ -120,7 +118,7 @@ static ssize_t queue_dbg_read(struct file *file, char __user *buf, nbytes -= len; buf += len; } - mutex_unlock(&file->f_dentry->d_inode->i_mutex); + mutex_unlock(&file_inode(file)->i_mutex); return actual; } @@ -168,13 +166,13 @@ out: static ssize_t regs_dbg_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { - struct inode *inode = file->f_dentry->d_inode; + struct inode *inode = file_inode(file); int ret; mutex_lock(&inode->i_mutex); ret = simple_read_from_buffer(buf, nbytes, ppos, file->private_data, - file->f_dentry->d_inode->i_size); + file_inode(file)->i_size); mutex_unlock(&inode->i_mutex); return ret; @@ -328,16 +326,16 @@ static int vbus_is_present(struct usba_udc *udc) #if defined(CONFIG_ARCH_AT91SAM9RL) -#include <mach/at91_pmc.h> +#include <linux/clk/at91_pmc.h> static void toggle_bias(int is_on) { - unsigned int uckr = at91_sys_read(AT91_CKGR_UCKR); + unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR); if (is_on) - at91_sys_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); + at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); else - at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); + at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); } #else @@ -489,13 +487,8 @@ request_complete(struct usba_ep *ep, struct usba_request *req, int status) if (req->req.status == -EINPROGRESS) req->req.status = status; - if (req->mapped) { - dma_unmap_single( - &udc->pdev->dev, req->req.dma, req->req.length, - ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } + if (req->using_dma) + usb_gadget_unmap_request(&udc->gadget, &req->req, ep->is_in); DBG(DBG_GADGET | DBG_REQ, "%s: req %p complete: status %d, actual %u\n", @@ -599,13 +592,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) spin_lock_irqsave(&ep->udc->lock, flags); - if (ep->desc) { - spin_unlock_irqrestore(&ep->udc->lock, flags); - DBG(DBG_ERR, "ep%d already enabled\n", ep->index); - return -EBUSY; - } - - ep->desc = desc; + ep->ep.desc = desc; ep->ep.maxpacket = maxpacket; usba_ep_writel(ep, CFG, ept_cfg); @@ -647,7 +634,7 @@ static int usba_ep_disable(struct usb_ep *_ep) spin_lock_irqsave(&udc->lock, flags); - if (!ep->desc) { + if (!ep->ep.desc) { spin_unlock_irqrestore(&udc->lock, flags); /* REVISIT because this driver disables endpoints in * reset_all_endpoints() before calling disconnect(), @@ -658,7 +645,7 @@ static int usba_ep_disable(struct usb_ep *_ep) ep->ep.name); return -EINVAL; } - ep->desc = NULL; + ep->ep.desc = NULL; list_splice_init(&ep->queue, &req_list); if (ep->can_dma) { @@ -690,7 +677,6 @@ usba_ep_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) return NULL; INIT_LIST_HEAD(&req->queue); - req->req.dma = DMA_ADDR_INVALID; return &req->req; } @@ -723,20 +709,11 @@ static int queue_dma(struct usba_udc *udc, struct usba_ep *ep, return -EINVAL; } - req->using_dma = 1; - - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single( - &udc->pdev->dev, req->req.buf, req->req.length, - ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 1; - } else { - dma_sync_single_for_device( - &udc->pdev->dev, req->req.dma, req->req.length, - ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 0; - } + ret = usb_gadget_map_request(&udc->gadget, &req->req, ep->is_in); + if (ret) + return ret; + req->using_dma = 1; req->ctrl = USBA_BF(DMA_BUF_LEN, req->req.length) | USBA_DMA_CH_EN | USBA_DMA_END_BUF_IE | USBA_DMA_END_TR_EN | USBA_DMA_END_TR_IE; @@ -751,7 +728,7 @@ static int queue_dma(struct usba_udc *udc, struct usba_ep *ep, */ ret = -ESHUTDOWN; spin_lock_irqsave(&udc->lock, flags); - if (ep->desc) { + if (ep->ep.desc) { if (list_empty(&ep->queue)) submit_request(ep, req); @@ -775,7 +752,8 @@ usba_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) DBG(DBG_GADGET | DBG_QUEUE | DBG_REQ, "%s: queue req %p, len %u\n", ep->ep.name, req, _req->length); - if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN || !ep->desc) + if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN || + !ep->ep.desc) return -ESHUTDOWN; req->submitted = 0; @@ -791,7 +769,7 @@ usba_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* May have received a reset since last time we checked */ ret = -ESHUTDOWN; spin_lock_irqsave(&udc->lock, flags); - if (ep->desc) { + if (ep->ep.desc) { list_add_tail(&req->queue, &ep->queue); if ((!ep_is_control(ep) && ep->is_in) || @@ -904,7 +882,7 @@ static int usba_ep_set_halt(struct usb_ep *_ep, int value) DBG(DBG_GADGET, "endpoint %s: %s HALT\n", ep->ep.name, value ? "set" : "clear"); - if (!ep->desc) { + if (!ep->ep.desc) { DBG(DBG_ERR, "Attempted to halt uninitialized ep %s\n", ep->ep.name); return -ENODEV; @@ -1007,16 +985,16 @@ usba_udc_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered) return 0; } -static int atmel_usba_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int atmel_usba_stop(struct usb_gadget_driver *driver); - +static int atmel_usba_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); +static int atmel_usba_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops usba_udc_ops = { .get_frame = usba_udc_get_frame, .wakeup = usba_udc_wakeup, .set_selfpowered = usba_udc_set_selfpowered, - .start = atmel_usba_start, - .stop = atmel_usba_stop, + .udc_start = atmel_usba_start, + .udc_stop = atmel_usba_stop, }; static struct usb_endpoint_descriptor usba_ep0_desc = { @@ -1034,16 +1012,13 @@ static void nop_release(struct device *dev) } -static struct usba_udc the_udc = { - .gadget = { - .ops = &usba_udc_ops, - .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list), - .max_speed = USB_SPEED_HIGH, - .name = "atmel_usba_udc", - .dev = { - .init_name = "gadget", - .release = nop_release, - }, +static struct usb_gadget usba_gadget_template = { + .ops = &usba_udc_ops, + .max_speed = USB_SPEED_HIGH, + .name = "atmel_usba_udc", + .dev = { + .init_name = "gadget", + .release = nop_release, }, }; @@ -1070,7 +1045,7 @@ static void reset_all_endpoints(struct usba_udc *udc) * FIXME remove this code ... and retest thoroughly. */ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - if (ep->desc) { + if (ep->ep.desc) { spin_unlock(&udc->lock); usba_ep_disable(&ep->ep); spin_lock(&udc->lock); @@ -1088,9 +1063,9 @@ static struct usba_ep *get_ep_by_addr(struct usba_udc *udc, u16 wIndex) list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { u8 bEndpointAddress; - if (!ep->desc) + if (!ep->ep.desc) continue; - bEndpointAddress = ep->desc->bEndpointAddress; + bEndpointAddress = ep->ep.desc->bEndpointAddress; if ((wIndex ^ bEndpointAddress) & USB_DIR_IN) continue; if ((bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) @@ -1167,7 +1142,7 @@ static int do_test_mode(struct usba_udc *udc) * Test_SE0_NAK: Force high-speed mode and set up ep0 * for Bulk IN transfers */ - ep = &usba_ep[0]; + ep = &udc->usba_ep[0]; usba_writel(udc, TST, USBA_BF(SPEED_CFG, USBA_SPEED_CFG_FORCE_HIGH)); usba_ep_writel(ep, CFG, @@ -1185,7 +1160,7 @@ static int do_test_mode(struct usba_udc *udc) break; case 0x0400: /* Test_Packet */ - ep = &usba_ep[0]; + ep = &udc->usba_ep[0]; usba_ep_writel(ep, CFG, USBA_BF(EPT_SIZE, USBA_EPT_SIZE_64) | USBA_EPT_DIR_IN @@ -1686,21 +1661,21 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) if (dma_status) { int i; - for (i = 1; i < USBA_NR_ENDPOINTS; i++) + for (i = 1; i < USBA_NR_DMAS; i++) if (dma_status & (1 << i)) - usba_dma_irq(udc, &usba_ep[i]); + usba_dma_irq(udc, &udc->usba_ep[i]); } ep_status = USBA_BFEXT(EPT_INT, status); if (ep_status) { int i; - for (i = 0; i < USBA_NR_ENDPOINTS; i++) + for (i = 0; i < udc->num_ep; i++) if (ep_status & (1 << i)) { - if (ep_is_control(&usba_ep[i])) - usba_control_irq(udc, &usba_ep[i]); + if (ep_is_control(&udc->usba_ep[i])) + usba_control_irq(udc, &udc->usba_ep[i]); else - usba_ep_irq(udc, &usba_ep[i]); + usba_ep_irq(udc, &udc->usba_ep[i]); } } @@ -1711,7 +1686,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) reset_all_endpoints(udc); if (udc->gadget.speed != USB_SPEED_UNKNOWN - && udc->driver->disconnect) { + && udc->driver && udc->driver->disconnect) { udc->gadget.speed = USB_SPEED_UNKNOWN; spin_unlock(&udc->lock); udc->driver->disconnect(&udc->gadget); @@ -1725,8 +1700,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) DBG(DBG_BUS, "%s bus reset detected\n", usb_speed_string(udc->gadget.speed)); - ep0 = &usba_ep[0]; - ep0->desc = &usba_ep0_desc; + ep0 = &udc->usba_ep[0]; + ep0->ep.desc = &usba_ep0_desc; ep0->state = WAIT_FOR_SETUP; usba_ep_writel(ep0, CFG, (USBA_BF(EPT_SIZE, EP0_EPT_SIZE) @@ -1794,35 +1769,26 @@ out: return IRQ_HANDLED; } -static int atmel_usba_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int atmel_usba_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct usba_udc *udc = &the_udc; - unsigned long flags; int ret; - - if (!udc->pdev) - return -ENODEV; + struct usba_udc *udc = container_of(gadget, struct usba_udc, gadget); + unsigned long flags; spin_lock_irqsave(&udc->lock, flags); - if (udc->driver) { - spin_unlock_irqrestore(&udc->lock, flags); - return -EBUSY; - } udc->devstatus = 1 << USB_DEVICE_SELF_POWERED; udc->driver = driver; - udc->gadget.dev.driver = &driver->driver; spin_unlock_irqrestore(&udc->lock, flags); - clk_enable(udc->pclk); - clk_enable(udc->hclk); - - ret = bind(&udc->gadget); + ret = clk_prepare_enable(udc->pclk); + if (ret) + return ret; + ret = clk_prepare_enable(udc->hclk); if (ret) { - DBG(DBG_ERR, "Could not bind to driver %s: error %d\n", - driver->driver.name, ret); - goto err_driver_bind; + clk_disable_unprepare(udc->pclk); + return ret; } DBG(DBG_GADGET, "registered driver `%s'\n", driver->driver.name); @@ -1841,23 +1807,14 @@ static int atmel_usba_start(struct usb_gadget_driver *driver, spin_unlock_irqrestore(&udc->lock, flags); return 0; - -err_driver_bind: - udc->driver = NULL; - udc->gadget.dev.driver = NULL; - return ret; } -static int atmel_usba_stop(struct usb_gadget_driver *driver) +static int atmel_usba_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct usba_udc *udc = &the_udc; + struct usba_udc *udc = container_of(gadget, struct usba_udc, gadget); unsigned long flags; - if (!udc->pdev) - return -ENODEV; - if (driver != udc->driver || !driver->unbind) - return -EINVAL; - if (gpio_is_valid(udc->vbus_pin)) disable_irq(gpio_to_irq(udc->vbus_pin)); @@ -1870,46 +1827,187 @@ static int atmel_usba_stop(struct usb_gadget_driver *driver) toggle_bias(0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); - if (udc->driver->disconnect) - udc->driver->disconnect(&udc->gadget); + clk_disable_unprepare(udc->hclk); + clk_disable_unprepare(udc->pclk); + + DBG(DBG_GADGET, "unregistered driver `%s'\n", udc->driver->driver.name); - driver->unbind(&udc->gadget); - udc->gadget.dev.driver = NULL; udc->driver = NULL; - clk_disable(udc->hclk); - clk_disable(udc->pclk); + return 0; +} - DBG(DBG_GADGET, "unregistered driver `%s'\n", driver->driver.name); +#ifdef CONFIG_OF +static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, + struct usba_udc *udc) +{ + u32 val; + const char *name; + enum of_gpio_flags flags; + struct device_node *np = pdev->dev.of_node; + struct device_node *pp; + int i, ret; + struct usba_ep *eps, *ep; + + udc->num_ep = 0; + + udc->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, + &flags); + udc->vbus_pin_inverted = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; + + pp = NULL; + while ((pp = of_get_next_child(np, pp))) + udc->num_ep++; + + eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * udc->num_ep, + GFP_KERNEL); + if (!eps) + return ERR_PTR(-ENOMEM); + + udc->gadget.ep0 = &eps[0].ep; + + INIT_LIST_HEAD(&eps[0].ep.ep_list); + + pp = NULL; + i = 0; + while ((pp = of_get_next_child(np, pp))) { + ep = &eps[i]; + + ret = of_property_read_u32(pp, "reg", &val); + if (ret) { + dev_err(&pdev->dev, "of_probe: reg error(%d)\n", ret); + goto err; + } + ep->index = val; - return 0; + ret = of_property_read_u32(pp, "atmel,fifo-size", &val); + if (ret) { + dev_err(&pdev->dev, "of_probe: fifo-size error(%d)\n", ret); + goto err; + } + ep->fifo_size = val; + + ret = of_property_read_u32(pp, "atmel,nb-banks", &val); + if (ret) { + dev_err(&pdev->dev, "of_probe: nb-banks error(%d)\n", ret); + goto err; + } + ep->nr_banks = val; + + ep->can_dma = of_property_read_bool(pp, "atmel,can-dma"); + ep->can_isoc = of_property_read_bool(pp, "atmel,can-isoc"); + + ret = of_property_read_string(pp, "name", &name); + ep->ep.name = name; + + ep->ep_regs = udc->regs + USBA_EPT_BASE(i); + ep->dma_regs = udc->regs + USBA_DMA_BASE(i); + ep->fifo = udc->fifo + USBA_FIFO_BASE(i); + ep->ep.ops = &usba_ep_ops; + usb_ep_set_maxpacket_limit(&ep->ep, ep->fifo_size); + ep->udc = udc; + INIT_LIST_HEAD(&ep->queue); + + if (i) + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + + i++; + } + + if (i == 0) { + dev_err(&pdev->dev, "of_probe: no endpoint specified\n"); + ret = -EINVAL; + goto err; + } + + return eps; +err: + return ERR_PTR(ret); +} +#else +static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, + struct usba_udc *udc) +{ + return ERR_PTR(-ENOSYS); +} +#endif + +static struct usba_ep * usba_udc_pdata(struct platform_device *pdev, + struct usba_udc *udc) +{ + struct usba_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct usba_ep *eps; + int i; + + if (!pdata) + return ERR_PTR(-ENXIO); + + eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * pdata->num_ep, + GFP_KERNEL); + if (!eps) + return ERR_PTR(-ENOMEM); + + udc->gadget.ep0 = &eps[0].ep; + + udc->vbus_pin = pdata->vbus_pin; + udc->vbus_pin_inverted = pdata->vbus_pin_inverted; + udc->num_ep = pdata->num_ep; + + INIT_LIST_HEAD(&eps[0].ep.ep_list); + + for (i = 0; i < pdata->num_ep; i++) { + struct usba_ep *ep = &eps[i]; + + ep->ep_regs = udc->regs + USBA_EPT_BASE(i); + ep->dma_regs = udc->regs + USBA_DMA_BASE(i); + ep->fifo = udc->fifo + USBA_FIFO_BASE(i); + ep->ep.ops = &usba_ep_ops; + ep->ep.name = pdata->ep[i].name; + ep->fifo_size = pdata->ep[i].fifo_size; + usb_ep_set_maxpacket_limit(&ep->ep, ep->fifo_size); + ep->udc = udc; + INIT_LIST_HEAD(&ep->queue); + ep->nr_banks = pdata->ep[i].nr_banks; + ep->index = pdata->ep[i].index; + ep->can_dma = pdata->ep[i].can_dma; + ep->can_isoc = pdata->ep[i].can_isoc; + + if (i) + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + } + + return eps; } static int __init usba_udc_probe(struct platform_device *pdev) { - struct usba_platform_data *pdata = pdev->dev.platform_data; struct resource *regs, *fifo; struct clk *pclk, *hclk; - struct usba_udc *udc = &the_udc; + struct usba_udc *udc; int irq, ret, i; + udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL); + if (!udc) + return -ENOMEM; + + udc->gadget = usba_gadget_template; + INIT_LIST_HEAD(&udc->gadget.ep_list); + regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); - if (!regs || !fifo || !pdata) + if (!regs || !fifo) return -ENXIO; irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; - pclk = clk_get(&pdev->dev, "pclk"); + pclk = devm_clk_get(&pdev->dev, "pclk"); if (IS_ERR(pclk)) return PTR_ERR(pclk); - hclk = clk_get(&pdev->dev, "hclk"); - if (IS_ERR(hclk)) { - ret = PTR_ERR(hclk); - goto err_get_hclk; - } + hclk = devm_clk_get(&pdev->dev, "hclk"); + if (IS_ERR(hclk)) + return PTR_ERR(hclk); spin_lock_init(&udc->lock); udc->pdev = pdev; @@ -1918,99 +2016,57 @@ static int __init usba_udc_probe(struct platform_device *pdev) udc->vbus_pin = -ENODEV; ret = -ENOMEM; - udc->regs = ioremap(regs->start, resource_size(regs)); + udc->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); if (!udc->regs) { dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n"); - goto err_map_regs; + return ret; } dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n", (unsigned long)regs->start, udc->regs); - udc->fifo = ioremap(fifo->start, resource_size(fifo)); + udc->fifo = devm_ioremap(&pdev->dev, fifo->start, resource_size(fifo)); if (!udc->fifo) { dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n"); - goto err_map_fifo; + return ret; } dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n", (unsigned long)fifo->start, udc->fifo); - device_initialize(&udc->gadget.dev); - udc->gadget.dev.parent = &pdev->dev; - udc->gadget.dev.dma_mask = pdev->dev.dma_mask; - platform_set_drvdata(pdev, udc); /* Make sure we start from a clean slate */ - clk_enable(pclk); + ret = clk_prepare_enable(pclk); + if (ret) { + dev_err(&pdev->dev, "Unable to enable pclk, aborting.\n"); + return ret; + } toggle_bias(0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); - clk_disable(pclk); - - usba_ep = kzalloc(sizeof(struct usba_ep) * pdata->num_ep, - GFP_KERNEL); - if (!usba_ep) - goto err_alloc_ep; - - the_udc.gadget.ep0 = &usba_ep[0].ep; - - INIT_LIST_HEAD(&usba_ep[0].ep.ep_list); - usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0); - usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0); - usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0); - usba_ep[0].ep.ops = &usba_ep_ops; - usba_ep[0].ep.name = pdata->ep[0].name; - usba_ep[0].ep.maxpacket = pdata->ep[0].fifo_size; - usba_ep[0].udc = &the_udc; - INIT_LIST_HEAD(&usba_ep[0].queue); - usba_ep[0].fifo_size = pdata->ep[0].fifo_size; - usba_ep[0].nr_banks = pdata->ep[0].nr_banks; - usba_ep[0].index = pdata->ep[0].index; - usba_ep[0].can_dma = pdata->ep[0].can_dma; - usba_ep[0].can_isoc = pdata->ep[0].can_isoc; - - for (i = 1; i < pdata->num_ep; i++) { - struct usba_ep *ep = &usba_ep[i]; + clk_disable_unprepare(pclk); - ep->ep_regs = udc->regs + USBA_EPT_BASE(i); - ep->dma_regs = udc->regs + USBA_DMA_BASE(i); - ep->fifo = udc->fifo + USBA_FIFO_BASE(i); - ep->ep.ops = &usba_ep_ops; - ep->ep.name = pdata->ep[i].name; - ep->ep.maxpacket = pdata->ep[i].fifo_size; - ep->udc = &the_udc; - INIT_LIST_HEAD(&ep->queue); - ep->fifo_size = pdata->ep[i].fifo_size; - ep->nr_banks = pdata->ep[i].nr_banks; - ep->index = pdata->ep[i].index; - ep->can_dma = pdata->ep[i].can_dma; - ep->can_isoc = pdata->ep[i].can_isoc; + if (pdev->dev.of_node) + udc->usba_ep = atmel_udc_of_init(pdev, udc); + else + udc->usba_ep = usba_udc_pdata(pdev, udc); - list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - } + if (IS_ERR(udc->usba_ep)) + return PTR_ERR(udc->usba_ep); - ret = request_irq(irq, usba_udc_irq, 0, "atmel_usba_udc", udc); + ret = devm_request_irq(&pdev->dev, irq, usba_udc_irq, 0, + "atmel_usba_udc", udc); if (ret) { dev_err(&pdev->dev, "Cannot request irq %d (error %d)\n", irq, ret); - goto err_request_irq; + return ret; } udc->irq = irq; - ret = device_add(&udc->gadget.dev); - if (ret) { - dev_dbg(&pdev->dev, "Could not add gadget: %d\n", ret); - goto err_device_add; - } - - if (gpio_is_valid(pdata->vbus_pin)) { - if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) { - udc->vbus_pin = pdata->vbus_pin; - udc->vbus_pin_inverted = pdata->vbus_pin_inverted; - - ret = request_irq(gpio_to_irq(udc->vbus_pin), + if (gpio_is_valid(udc->vbus_pin)) { + if (!devm_gpio_request(&pdev->dev, udc->vbus_pin, "atmel_usba_udc")) { + ret = devm_request_irq(&pdev->dev, + gpio_to_irq(udc->vbus_pin), usba_vbus_irq, 0, "atmel_usba_udc", udc); if (ret) { - gpio_free(udc->vbus_pin); udc->vbus_pin = -ENODEV; dev_warn(&udc->pdev->dev, "failed to request vbus irq; " @@ -2026,90 +2082,50 @@ static int __init usba_udc_probe(struct platform_device *pdev) ret = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (ret) - goto err_add_udc; + return ret; usba_init_debugfs(udc); - for (i = 1; i < pdata->num_ep; i++) - usba_ep_init_debugfs(udc, &usba_ep[i]); + for (i = 1; i < udc->num_ep; i++) + usba_ep_init_debugfs(udc, &udc->usba_ep[i]); return 0; - -err_add_udc: - if (gpio_is_valid(pdata->vbus_pin)) { - free_irq(gpio_to_irq(udc->vbus_pin), udc); - gpio_free(udc->vbus_pin); - } - - device_unregister(&udc->gadget.dev); - -err_device_add: - free_irq(irq, udc); -err_request_irq: - kfree(usba_ep); -err_alloc_ep: - iounmap(udc->fifo); -err_map_fifo: - iounmap(udc->regs); -err_map_regs: - clk_put(hclk); -err_get_hclk: - clk_put(pclk); - - platform_set_drvdata(pdev, NULL); - - return ret; } static int __exit usba_udc_remove(struct platform_device *pdev) { struct usba_udc *udc; int i; - struct usba_platform_data *pdata = pdev->dev.platform_data; udc = platform_get_drvdata(pdev); usb_del_gadget_udc(&udc->gadget); - for (i = 1; i < pdata->num_ep; i++) - usba_ep_cleanup_debugfs(&usba_ep[i]); + for (i = 1; i < udc->num_ep; i++) + usba_ep_cleanup_debugfs(&udc->usba_ep[i]); usba_cleanup_debugfs(udc); - if (gpio_is_valid(udc->vbus_pin)) { - free_irq(gpio_to_irq(udc->vbus_pin), udc); - gpio_free(udc->vbus_pin); - } - - free_irq(udc->irq, udc); - kfree(usba_ep); - iounmap(udc->fifo); - iounmap(udc->regs); - clk_put(udc->hclk); - clk_put(udc->pclk); - - device_unregister(&udc->gadget.dev); - return 0; } +#if defined(CONFIG_OF) +static const struct of_device_id atmel_udc_dt_ids[] = { + { .compatible = "atmel,at91sam9rl-udc" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, atmel_udc_dt_ids); +#endif + static struct platform_driver udc_driver = { .remove = __exit_p(usba_udc_remove), .driver = { .name = "atmel_usba_udc", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(atmel_udc_dt_ids), }, }; -static int __init udc_init(void) -{ - return platform_driver_probe(&udc_driver, usba_udc_probe); -} -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); +module_platform_driver_probe(udc_driver, usba_udc_probe); MODULE_DESCRIPTION("Atmel USBA UDC driver"); MODULE_AUTHOR("Haavard Skinnemoen (Atmel)"); diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h index 88a2e07a11a..a70706e8cb0 100644 --- a/drivers/usb/gadget/atmel_usba_udc.h +++ b/drivers/usb/gadget/atmel_usba_udc.h @@ -210,18 +210,12 @@ #define USBA_FIFO_BASE(x) ((x) << 16) /* Synth parameters */ -#define USBA_NR_ENDPOINTS 7 +#define USBA_NR_DMAS 7 #define EP0_FIFO_SIZE 64 #define EP0_EPT_SIZE USBA_EPT_SIZE_64 #define EP0_NR_BANKS 1 -/* - * REVISIT: Try to eliminate this value. Can we rely on req->mapped to - * provide this information? - */ -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - #define FIFO_IOMEM_ID 0 #define CTRL_IOMEM_ID 1 @@ -280,7 +274,6 @@ struct usba_ep { struct usba_udc *udc; struct list_head queue; - const struct usb_endpoint_descriptor *desc; u16 fifo_size; u8 nr_banks; @@ -324,8 +317,10 @@ struct usba_udc { int irq; int vbus_pin; int vbus_pin_inverted; + int num_ep; struct clk *pclk; struct clk *hclk; + struct usba_ep *usba_ep; u16 devstatus; diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c index 9d89ae4765a..231b0efe8fd 100644 --- a/drivers/usb/gadget/audio.c +++ b/drivers/usb/gadget/audio.c @@ -12,29 +12,41 @@ /* #define VERBOSE_DEBUG */ #include <linux/kernel.h> -#include <linux/utsname.h> - -#include "u_audio.h" +#include <linux/module.h> +#include <linux/usb/composite.h> +#include "gadget_chips.h" #define DRIVER_DESC "Linux USB Audio Gadget" -#define DRIVER_VERSION "Dec 18, 2008" +#define DRIVER_VERSION "Feb 2, 2012" -/*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" +/* string IDs are assigned dynamically */ + +static struct usb_string strings_dev[] = { + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; -#include "u_audio.c" -#include "f_audio.c" +static struct usb_gadget_strings *audio_strings[] = { + &stringtab_dev, + NULL, +}; + +#ifdef CONFIG_GADGET_UAC1 +#include "u_uac1.h" +#include "u_uac1.c" +#include "f_uac1.c" +#else +#include "f_uac2.c" +#endif /*-------------------------------------------------------------------------*/ @@ -54,9 +66,15 @@ static struct usb_device_descriptor device_desc = { .bcdUSB = __constant_cpu_to_le16(0x200), +#ifdef CONFIG_GADGET_UAC1 .bDeviceClass = USB_CLASS_PER_INTERFACE, .bDeviceSubClass = 0, .bDeviceProtocol = 0, +#else + .bDeviceClass = USB_CLASS_MISC, + .bDeviceSubClass = 0x02, + .bDeviceProtocol = 0x01, +#endif /* .bMaxPacketSize0 = f(hardware) */ /* Vendor and product id defaults change according to what configs @@ -108,45 +126,27 @@ static struct usb_configuration audio_config_driver = { .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +#ifndef CONFIG_GADGET_UAC1 + .unbind = uac2_unbind_config, +#endif }; /*-------------------------------------------------------------------------*/ static int __init audio_bind(struct usb_composite_dev *cdev) { - int gcnum; int status; - gcnum = usb_gadget_controller_number(cdev->gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - else { - ERROR(cdev, "controller '%s' not recognized; trying %s\n", - cdev->gadget->name, - audio_config_driver.label); - device_desc.bcdDevice = - __constant_cpu_to_le16(0x0300 | 0x0099); - } - - /* device descriptor strings: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - cdev->gadget->name); - status = usb_string_id(cdev); - if (status < 0) - goto fail; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) goto fail; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; status = usb_add_config(cdev, &audio_config_driver, audio_do_config); if (status < 0) goto fail; + usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION); return 0; @@ -157,21 +157,24 @@ fail: static int __exit audio_unbind(struct usb_composite_dev *cdev) { +#ifdef CONFIG_GADGET_UAC1 gaudio_cleanup(); +#endif return 0; } -static struct usb_composite_driver audio_driver = { +static __refdata struct usb_composite_driver audio_driver = { .name = "g_audio", .dev = &device_desc, .strings = audio_strings, .max_speed = USB_SPEED_HIGH, + .bind = audio_bind, .unbind = __exit_p(audio_unbind), }; static int __init init(void) { - return usb_composite_probe(&audio_driver, audio_bind); + return usb_composite_probe(&audio_driver); } module_init(init); diff --git a/drivers/usb/gadget/bcm63xx_udc.c b/drivers/usb/gadget/bcm63xx_udc.c new file mode 100644 index 00000000000..e969eb809a8 --- /dev/null +++ b/drivers/usb/gadget/bcm63xx_udc.c @@ -0,0 +1,2436 @@ +/* + * bcm63xx_udc.c -- BCM63xx UDC high/full speed USB device controller + * + * Copyright (C) 2012 Kevin Cernekee <cernekee@gmail.com> + * Copyright (C) 2012 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/bitops.h> +#include <linux/bug.h> +#include <linux/clk.h> +#include <linux/compiler.h> +#include <linux/debugfs.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/kconfig.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/platform_device.h> +#include <linux/sched.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/timer.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/workqueue.h> + +#include <bcm63xx_cpu.h> +#include <bcm63xx_iudma.h> +#include <bcm63xx_dev_usb_usbd.h> +#include <bcm63xx_io.h> +#include <bcm63xx_regs.h> + +#define DRV_MODULE_NAME "bcm63xx_udc" + +static const char bcm63xx_ep0name[] = "ep0"; +static const char *const bcm63xx_ep_name[] = { + bcm63xx_ep0name, + "ep1in-bulk", "ep2out-bulk", "ep3in-int", "ep4out-int", +}; + +static bool use_fullspeed; +module_param(use_fullspeed, bool, S_IRUGO); +MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only"); + +/* + * RX IRQ coalescing options: + * + * false (default) - one IRQ per DATAx packet. Slow but reliable. The + * driver is able to pass the "testusb" suite and recover from conditions like: + * + * 1) Device queues up a 2048-byte RX IUDMA transaction on an OUT bulk ep + * 2) Host sends 512 bytes of data + * 3) Host decides to reconfigure the device and sends SET_INTERFACE + * 4) Device shuts down the endpoint and cancels the RX transaction + * + * true - one IRQ per transfer, for transfers <= 2048B. Generates + * considerably fewer IRQs, but error recovery is less robust. Does not + * reliably pass "testusb". + * + * TX always uses coalescing, because we can cancel partially complete TX + * transfers by repeatedly flushing the FIFO. The hardware doesn't allow + * this on RX. + */ +static bool irq_coalesce; +module_param(irq_coalesce, bool, S_IRUGO); +MODULE_PARM_DESC(irq_coalesce, "take one IRQ per RX transfer"); + +#define BCM63XX_NUM_EP 5 +#define BCM63XX_NUM_IUDMA 6 +#define BCM63XX_NUM_FIFO_PAIRS 3 + +#define IUDMA_RESET_TIMEOUT_US 10000 + +#define IUDMA_EP0_RXCHAN 0 +#define IUDMA_EP0_TXCHAN 1 + +#define IUDMA_MAX_FRAGMENT 2048 +#define BCM63XX_MAX_CTRL_PKT 64 + +#define BCMEP_CTRL 0x00 +#define BCMEP_ISOC 0x01 +#define BCMEP_BULK 0x02 +#define BCMEP_INTR 0x03 + +#define BCMEP_OUT 0x00 +#define BCMEP_IN 0x01 + +#define BCM63XX_SPD_FULL 1 +#define BCM63XX_SPD_HIGH 0 + +#define IUDMA_DMAC_OFFSET 0x200 +#define IUDMA_DMAS_OFFSET 0x400 + +enum bcm63xx_ep0_state { + EP0_REQUEUE, + EP0_IDLE, + EP0_IN_DATA_PHASE_SETUP, + EP0_IN_DATA_PHASE_COMPLETE, + EP0_OUT_DATA_PHASE_SETUP, + EP0_OUT_DATA_PHASE_COMPLETE, + EP0_OUT_STATUS_PHASE, + EP0_IN_FAKE_STATUS_PHASE, + EP0_SHUTDOWN, +}; + +static const char __maybe_unused bcm63xx_ep0_state_names[][32] = { + "REQUEUE", + "IDLE", + "IN_DATA_PHASE_SETUP", + "IN_DATA_PHASE_COMPLETE", + "OUT_DATA_PHASE_SETUP", + "OUT_DATA_PHASE_COMPLETE", + "OUT_STATUS_PHASE", + "IN_FAKE_STATUS_PHASE", + "SHUTDOWN", +}; + +/** + * struct iudma_ch_cfg - Static configuration for an IUDMA channel. + * @ep_num: USB endpoint number. + * @n_bds: Number of buffer descriptors in the ring. + * @ep_type: Endpoint type (control, bulk, interrupt). + * @dir: Direction (in, out). + * @n_fifo_slots: Number of FIFO entries to allocate for this channel. + * @max_pkt_hs: Maximum packet size in high speed mode. + * @max_pkt_fs: Maximum packet size in full speed mode. + */ +struct iudma_ch_cfg { + int ep_num; + int n_bds; + int ep_type; + int dir; + int n_fifo_slots; + int max_pkt_hs; + int max_pkt_fs; +}; + +static const struct iudma_ch_cfg iudma_defaults[] = { + + /* This controller was designed to support a CDC/RNDIS application. + It may be possible to reconfigure some of the endpoints, but + the hardware limitations (FIFO sizing and number of DMA channels) + may significantly impact flexibility and/or stability. Change + these values at your own risk. + + ep_num ep_type n_fifo_slots max_pkt_fs + idx | n_bds | dir | max_pkt_hs | + | | | | | | | | */ + [0] = { -1, 4, BCMEP_CTRL, BCMEP_OUT, 32, 64, 64 }, + [1] = { 0, 4, BCMEP_CTRL, BCMEP_OUT, 32, 64, 64 }, + [2] = { 2, 16, BCMEP_BULK, BCMEP_OUT, 128, 512, 64 }, + [3] = { 1, 16, BCMEP_BULK, BCMEP_IN, 128, 512, 64 }, + [4] = { 4, 4, BCMEP_INTR, BCMEP_OUT, 32, 64, 64 }, + [5] = { 3, 4, BCMEP_INTR, BCMEP_IN, 32, 64, 64 }, +}; + +struct bcm63xx_udc; + +/** + * struct iudma_ch - Represents the current state of a single IUDMA channel. + * @ch_idx: IUDMA channel index (0 to BCM63XX_NUM_IUDMA-1). + * @ep_num: USB endpoint number. -1 for ep0 RX. + * @enabled: Whether bcm63xx_ep_enable() has been called. + * @max_pkt: "Chunk size" on the USB interface. Based on interface speed. + * @is_tx: true for TX, false for RX. + * @bep: Pointer to the associated endpoint. NULL for ep0 RX. + * @udc: Reference to the device controller. + * @read_bd: Next buffer descriptor to reap from the hardware. + * @write_bd: Next BD available for a new packet. + * @end_bd: Points to the final BD in the ring. + * @n_bds_used: Number of BD entries currently occupied. + * @bd_ring: Base pointer to the BD ring. + * @bd_ring_dma: Physical (DMA) address of bd_ring. + * @n_bds: Total number of BDs in the ring. + * + * ep0 has two IUDMA channels (IUDMA_EP0_RXCHAN and IUDMA_EP0_TXCHAN), as it is + * bidirectional. The "struct usb_ep" associated with ep0 is for TX (IN) + * only. + * + * Each bulk/intr endpoint has a single IUDMA channel and a single + * struct usb_ep. + */ +struct iudma_ch { + unsigned int ch_idx; + int ep_num; + bool enabled; + int max_pkt; + bool is_tx; + struct bcm63xx_ep *bep; + struct bcm63xx_udc *udc; + + struct bcm_enet_desc *read_bd; + struct bcm_enet_desc *write_bd; + struct bcm_enet_desc *end_bd; + int n_bds_used; + + struct bcm_enet_desc *bd_ring; + dma_addr_t bd_ring_dma; + unsigned int n_bds; +}; + +/** + * struct bcm63xx_ep - Internal (driver) state of a single endpoint. + * @ep_num: USB endpoint number. + * @iudma: Pointer to IUDMA channel state. + * @ep: USB gadget layer representation of the EP. + * @udc: Reference to the device controller. + * @queue: Linked list of outstanding requests for this EP. + * @halted: 1 if the EP is stalled; 0 otherwise. + */ +struct bcm63xx_ep { + unsigned int ep_num; + struct iudma_ch *iudma; + struct usb_ep ep; + struct bcm63xx_udc *udc; + struct list_head queue; + unsigned halted:1; +}; + +/** + * struct bcm63xx_req - Internal (driver) state of a single request. + * @queue: Links back to the EP's request list. + * @req: USB gadget layer representation of the request. + * @offset: Current byte offset into the data buffer (next byte to queue). + * @bd_bytes: Number of data bytes in outstanding BD entries. + * @iudma: IUDMA channel used for the request. + */ +struct bcm63xx_req { + struct list_head queue; /* ep's requests */ + struct usb_request req; + unsigned int offset; + unsigned int bd_bytes; + struct iudma_ch *iudma; +}; + +/** + * struct bcm63xx_udc - Driver/hardware private context. + * @lock: Spinlock to mediate access to this struct, and (most) HW regs. + * @dev: Generic Linux device structure. + * @pd: Platform data (board/port info). + * @usbd_clk: Clock descriptor for the USB device block. + * @usbh_clk: Clock descriptor for the USB host block. + * @gadget: USB slave device. + * @driver: Driver for USB slave devices. + * @usbd_regs: Base address of the USBD/USB20D block. + * @iudma_regs: Base address of the USBD's associated IUDMA block. + * @bep: Array of endpoints, including ep0. + * @iudma: Array of all IUDMA channels used by this controller. + * @cfg: USB configuration number, from SET_CONFIGURATION wValue. + * @iface: USB interface number, from SET_INTERFACE wIndex. + * @alt_iface: USB alt interface number, from SET_INTERFACE wValue. + * @ep0_ctrl_req: Request object for bcm63xx_udc-initiated ep0 transactions. + * @ep0_ctrl_buf: Data buffer for ep0_ctrl_req. + * @ep0state: Current state of the ep0 state machine. + * @ep0_wq: Workqueue struct used to wake up the ep0 state machine. + * @wedgemap: Bitmap of wedged endpoints. + * @ep0_req_reset: USB reset is pending. + * @ep0_req_set_cfg: Need to spoof a SET_CONFIGURATION packet. + * @ep0_req_set_iface: Need to spoof a SET_INTERFACE packet. + * @ep0_req_shutdown: Driver is shutting down; requesting ep0 to halt activity. + * @ep0_req_completed: ep0 request has completed; worker has not seen it yet. + * @ep0_reply: Pending reply from gadget driver. + * @ep0_request: Outstanding ep0 request. + * @debugfs_root: debugfs directory: /sys/kernel/debug/<DRV_MODULE_NAME>. + * @debugfs_usbd: debugfs file "usbd" for controller state. + * @debugfs_iudma: debugfs file "usbd" for IUDMA state. + */ +struct bcm63xx_udc { + spinlock_t lock; + + struct device *dev; + struct bcm63xx_usbd_platform_data *pd; + struct clk *usbd_clk; + struct clk *usbh_clk; + + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + + void __iomem *usbd_regs; + void __iomem *iudma_regs; + + struct bcm63xx_ep bep[BCM63XX_NUM_EP]; + struct iudma_ch iudma[BCM63XX_NUM_IUDMA]; + + int cfg; + int iface; + int alt_iface; + + struct bcm63xx_req ep0_ctrl_req; + u8 *ep0_ctrl_buf; + + int ep0state; + struct work_struct ep0_wq; + + unsigned long wedgemap; + + unsigned ep0_req_reset:1; + unsigned ep0_req_set_cfg:1; + unsigned ep0_req_set_iface:1; + unsigned ep0_req_shutdown:1; + + unsigned ep0_req_completed:1; + struct usb_request *ep0_reply; + struct usb_request *ep0_request; + + struct dentry *debugfs_root; + struct dentry *debugfs_usbd; + struct dentry *debugfs_iudma; +}; + +static const struct usb_ep_ops bcm63xx_udc_ep_ops; + +/*********************************************************************** + * Convenience functions + ***********************************************************************/ + +static inline struct bcm63xx_udc *gadget_to_udc(struct usb_gadget *g) +{ + return container_of(g, struct bcm63xx_udc, gadget); +} + +static inline struct bcm63xx_ep *our_ep(struct usb_ep *ep) +{ + return container_of(ep, struct bcm63xx_ep, ep); +} + +static inline struct bcm63xx_req *our_req(struct usb_request *req) +{ + return container_of(req, struct bcm63xx_req, req); +} + +static inline u32 usbd_readl(struct bcm63xx_udc *udc, u32 off) +{ + return bcm_readl(udc->usbd_regs + off); +} + +static inline void usbd_writel(struct bcm63xx_udc *udc, u32 val, u32 off) +{ + bcm_writel(val, udc->usbd_regs + off); +} + +static inline u32 usb_dma_readl(struct bcm63xx_udc *udc, u32 off) +{ + return bcm_readl(udc->iudma_regs + off); +} + +static inline void usb_dma_writel(struct bcm63xx_udc *udc, u32 val, u32 off) +{ + bcm_writel(val, udc->iudma_regs + off); +} + +static inline u32 usb_dmac_readl(struct bcm63xx_udc *udc, u32 off, int chan) +{ + return bcm_readl(udc->iudma_regs + IUDMA_DMAC_OFFSET + off + + (ENETDMA_CHAN_WIDTH * chan)); +} + +static inline void usb_dmac_writel(struct bcm63xx_udc *udc, u32 val, u32 off, + int chan) +{ + bcm_writel(val, udc->iudma_regs + IUDMA_DMAC_OFFSET + off + + (ENETDMA_CHAN_WIDTH * chan)); +} + +static inline u32 usb_dmas_readl(struct bcm63xx_udc *udc, u32 off, int chan) +{ + return bcm_readl(udc->iudma_regs + IUDMA_DMAS_OFFSET + off + + (ENETDMA_CHAN_WIDTH * chan)); +} + +static inline void usb_dmas_writel(struct bcm63xx_udc *udc, u32 val, u32 off, + int chan) +{ + bcm_writel(val, udc->iudma_regs + IUDMA_DMAS_OFFSET + off + + (ENETDMA_CHAN_WIDTH * chan)); +} + +static inline void set_clocks(struct bcm63xx_udc *udc, bool is_enabled) +{ + if (is_enabled) { + clk_enable(udc->usbh_clk); + clk_enable(udc->usbd_clk); + udelay(10); + } else { + clk_disable(udc->usbd_clk); + clk_disable(udc->usbh_clk); + } +} + +/*********************************************************************** + * Low-level IUDMA / FIFO operations + ***********************************************************************/ + +/** + * bcm63xx_ep_dma_select - Helper function to set up the init_sel signal. + * @udc: Reference to the device controller. + * @idx: Desired init_sel value. + * + * The "init_sel" signal is used as a selection index for both endpoints + * and IUDMA channels. Since these do not map 1:1, the use of this signal + * depends on the context. + */ +static void bcm63xx_ep_dma_select(struct bcm63xx_udc *udc, int idx) +{ + u32 val = usbd_readl(udc, USBD_CONTROL_REG); + + val &= ~USBD_CONTROL_INIT_SEL_MASK; + val |= idx << USBD_CONTROL_INIT_SEL_SHIFT; + usbd_writel(udc, val, USBD_CONTROL_REG); +} + +/** + * bcm63xx_set_stall - Enable/disable stall on one endpoint. + * @udc: Reference to the device controller. + * @bep: Endpoint on which to operate. + * @is_stalled: true to enable stall, false to disable. + * + * See notes in bcm63xx_update_wedge() regarding automatic clearing of + * halt/stall conditions. + */ +static void bcm63xx_set_stall(struct bcm63xx_udc *udc, struct bcm63xx_ep *bep, + bool is_stalled) +{ + u32 val; + + val = USBD_STALL_UPDATE_MASK | + (is_stalled ? USBD_STALL_ENABLE_MASK : 0) | + (bep->ep_num << USBD_STALL_EPNUM_SHIFT); + usbd_writel(udc, val, USBD_STALL_REG); +} + +/** + * bcm63xx_fifo_setup - (Re)initialize FIFO boundaries and settings. + * @udc: Reference to the device controller. + * + * These parameters depend on the USB link speed. Settings are + * per-IUDMA-channel-pair. + */ +static void bcm63xx_fifo_setup(struct bcm63xx_udc *udc) +{ + int is_hs = udc->gadget.speed == USB_SPEED_HIGH; + u32 i, val, rx_fifo_slot, tx_fifo_slot; + + /* set up FIFO boundaries and packet sizes; this is done in pairs */ + rx_fifo_slot = tx_fifo_slot = 0; + for (i = 0; i < BCM63XX_NUM_IUDMA; i += 2) { + const struct iudma_ch_cfg *rx_cfg = &iudma_defaults[i]; + const struct iudma_ch_cfg *tx_cfg = &iudma_defaults[i + 1]; + + bcm63xx_ep_dma_select(udc, i >> 1); + + val = (rx_fifo_slot << USBD_RXFIFO_CONFIG_START_SHIFT) | + ((rx_fifo_slot + rx_cfg->n_fifo_slots - 1) << + USBD_RXFIFO_CONFIG_END_SHIFT); + rx_fifo_slot += rx_cfg->n_fifo_slots; + usbd_writel(udc, val, USBD_RXFIFO_CONFIG_REG); + usbd_writel(udc, + is_hs ? rx_cfg->max_pkt_hs : rx_cfg->max_pkt_fs, + USBD_RXFIFO_EPSIZE_REG); + + val = (tx_fifo_slot << USBD_TXFIFO_CONFIG_START_SHIFT) | + ((tx_fifo_slot + tx_cfg->n_fifo_slots - 1) << + USBD_TXFIFO_CONFIG_END_SHIFT); + tx_fifo_slot += tx_cfg->n_fifo_slots; + usbd_writel(udc, val, USBD_TXFIFO_CONFIG_REG); + usbd_writel(udc, + is_hs ? tx_cfg->max_pkt_hs : tx_cfg->max_pkt_fs, + USBD_TXFIFO_EPSIZE_REG); + + usbd_readl(udc, USBD_TXFIFO_EPSIZE_REG); + } +} + +/** + * bcm63xx_fifo_reset_ep - Flush a single endpoint's FIFO. + * @udc: Reference to the device controller. + * @ep_num: Endpoint number. + */ +static void bcm63xx_fifo_reset_ep(struct bcm63xx_udc *udc, int ep_num) +{ + u32 val; + + bcm63xx_ep_dma_select(udc, ep_num); + + val = usbd_readl(udc, USBD_CONTROL_REG); + val |= USBD_CONTROL_FIFO_RESET_MASK; + usbd_writel(udc, val, USBD_CONTROL_REG); + usbd_readl(udc, USBD_CONTROL_REG); +} + +/** + * bcm63xx_fifo_reset - Flush all hardware FIFOs. + * @udc: Reference to the device controller. + */ +static void bcm63xx_fifo_reset(struct bcm63xx_udc *udc) +{ + int i; + + for (i = 0; i < BCM63XX_NUM_FIFO_PAIRS; i++) + bcm63xx_fifo_reset_ep(udc, i); +} + +/** + * bcm63xx_ep_init - Initial (one-time) endpoint initialization. + * @udc: Reference to the device controller. + */ +static void bcm63xx_ep_init(struct bcm63xx_udc *udc) +{ + u32 i, val; + + for (i = 0; i < BCM63XX_NUM_IUDMA; i++) { + const struct iudma_ch_cfg *cfg = &iudma_defaults[i]; + + if (cfg->ep_num < 0) + continue; + + bcm63xx_ep_dma_select(udc, cfg->ep_num); + val = (cfg->ep_type << USBD_EPNUM_TYPEMAP_TYPE_SHIFT) | + ((i >> 1) << USBD_EPNUM_TYPEMAP_DMA_CH_SHIFT); + usbd_writel(udc, val, USBD_EPNUM_TYPEMAP_REG); + } +} + +/** + * bcm63xx_ep_setup - Configure per-endpoint settings. + * @udc: Reference to the device controller. + * + * This needs to be rerun if the speed/cfg/intf/altintf changes. + */ +static void bcm63xx_ep_setup(struct bcm63xx_udc *udc) +{ + u32 val, i; + + usbd_writel(udc, USBD_CSR_SETUPADDR_DEF, USBD_CSR_SETUPADDR_REG); + + for (i = 0; i < BCM63XX_NUM_IUDMA; i++) { + const struct iudma_ch_cfg *cfg = &iudma_defaults[i]; + int max_pkt = udc->gadget.speed == USB_SPEED_HIGH ? + cfg->max_pkt_hs : cfg->max_pkt_fs; + int idx = cfg->ep_num; + + udc->iudma[i].max_pkt = max_pkt; + + if (idx < 0) + continue; + usb_ep_set_maxpacket_limit(&udc->bep[idx].ep, max_pkt); + + val = (idx << USBD_CSR_EP_LOG_SHIFT) | + (cfg->dir << USBD_CSR_EP_DIR_SHIFT) | + (cfg->ep_type << USBD_CSR_EP_TYPE_SHIFT) | + (udc->cfg << USBD_CSR_EP_CFG_SHIFT) | + (udc->iface << USBD_CSR_EP_IFACE_SHIFT) | + (udc->alt_iface << USBD_CSR_EP_ALTIFACE_SHIFT) | + (max_pkt << USBD_CSR_EP_MAXPKT_SHIFT); + usbd_writel(udc, val, USBD_CSR_EP_REG(idx)); + } +} + +/** + * iudma_write - Queue a single IUDMA transaction. + * @udc: Reference to the device controller. + * @iudma: IUDMA channel to use. + * @breq: Request containing the transaction data. + * + * For RX IUDMA, this will queue a single buffer descriptor, as RX IUDMA + * does not honor SOP/EOP so the handling of multiple buffers is ambiguous. + * So iudma_write() may be called several times to fulfill a single + * usb_request. + * + * For TX IUDMA, this can queue multiple buffer descriptors if needed. + */ +static void iudma_write(struct bcm63xx_udc *udc, struct iudma_ch *iudma, + struct bcm63xx_req *breq) +{ + int first_bd = 1, last_bd = 0, extra_zero_pkt = 0; + unsigned int bytes_left = breq->req.length - breq->offset; + const int max_bd_bytes = !irq_coalesce && !iudma->is_tx ? + iudma->max_pkt : IUDMA_MAX_FRAGMENT; + + iudma->n_bds_used = 0; + breq->bd_bytes = 0; + breq->iudma = iudma; + + if ((bytes_left % iudma->max_pkt == 0) && bytes_left && breq->req.zero) + extra_zero_pkt = 1; + + do { + struct bcm_enet_desc *d = iudma->write_bd; + u32 dmaflags = 0; + unsigned int n_bytes; + + if (d == iudma->end_bd) { + dmaflags |= DMADESC_WRAP_MASK; + iudma->write_bd = iudma->bd_ring; + } else { + iudma->write_bd++; + } + iudma->n_bds_used++; + + n_bytes = min_t(int, bytes_left, max_bd_bytes); + if (n_bytes) + dmaflags |= n_bytes << DMADESC_LENGTH_SHIFT; + else + dmaflags |= (1 << DMADESC_LENGTH_SHIFT) | + DMADESC_USB_ZERO_MASK; + + dmaflags |= DMADESC_OWNER_MASK; + if (first_bd) { + dmaflags |= DMADESC_SOP_MASK; + first_bd = 0; + } + + /* + * extra_zero_pkt forces one more iteration through the loop + * after all data is queued up, to send the zero packet + */ + if (extra_zero_pkt && !bytes_left) + extra_zero_pkt = 0; + + if (!iudma->is_tx || iudma->n_bds_used == iudma->n_bds || + (n_bytes == bytes_left && !extra_zero_pkt)) { + last_bd = 1; + dmaflags |= DMADESC_EOP_MASK; + } + + d->address = breq->req.dma + breq->offset; + mb(); + d->len_stat = dmaflags; + + breq->offset += n_bytes; + breq->bd_bytes += n_bytes; + bytes_left -= n_bytes; + } while (!last_bd); + + usb_dmac_writel(udc, ENETDMAC_CHANCFG_EN_MASK, + ENETDMAC_CHANCFG_REG, iudma->ch_idx); +} + +/** + * iudma_read - Check for IUDMA buffer completion. + * @udc: Reference to the device controller. + * @iudma: IUDMA channel to use. + * + * This checks to see if ALL of the outstanding BDs on the DMA channel + * have been filled. If so, it returns the actual transfer length; + * otherwise it returns -EBUSY. + */ +static int iudma_read(struct bcm63xx_udc *udc, struct iudma_ch *iudma) +{ + int i, actual_len = 0; + struct bcm_enet_desc *d = iudma->read_bd; + + if (!iudma->n_bds_used) + return -EINVAL; + + for (i = 0; i < iudma->n_bds_used; i++) { + u32 dmaflags; + + dmaflags = d->len_stat; + + if (dmaflags & DMADESC_OWNER_MASK) + return -EBUSY; + + actual_len += (dmaflags & DMADESC_LENGTH_MASK) >> + DMADESC_LENGTH_SHIFT; + if (d == iudma->end_bd) + d = iudma->bd_ring; + else + d++; + } + + iudma->read_bd = d; + iudma->n_bds_used = 0; + return actual_len; +} + +/** + * iudma_reset_channel - Stop DMA on a single channel. + * @udc: Reference to the device controller. + * @iudma: IUDMA channel to reset. + */ +static void iudma_reset_channel(struct bcm63xx_udc *udc, struct iudma_ch *iudma) +{ + int timeout = IUDMA_RESET_TIMEOUT_US; + struct bcm_enet_desc *d; + int ch_idx = iudma->ch_idx; + + if (!iudma->is_tx) + bcm63xx_fifo_reset_ep(udc, max(0, iudma->ep_num)); + + /* stop DMA, then wait for the hardware to wrap up */ + usb_dmac_writel(udc, 0, ENETDMAC_CHANCFG_REG, ch_idx); + + while (usb_dmac_readl(udc, ENETDMAC_CHANCFG_REG, ch_idx) & + ENETDMAC_CHANCFG_EN_MASK) { + udelay(1); + + /* repeatedly flush the FIFO data until the BD completes */ + if (iudma->is_tx && iudma->ep_num >= 0) + bcm63xx_fifo_reset_ep(udc, iudma->ep_num); + + if (!timeout--) { + dev_err(udc->dev, "can't reset IUDMA channel %d\n", + ch_idx); + break; + } + if (timeout == IUDMA_RESET_TIMEOUT_US / 2) { + dev_warn(udc->dev, "forcibly halting IUDMA channel %d\n", + ch_idx); + usb_dmac_writel(udc, ENETDMAC_CHANCFG_BUFHALT_MASK, + ENETDMAC_CHANCFG_REG, ch_idx); + } + } + usb_dmac_writel(udc, ~0, ENETDMAC_IR_REG, ch_idx); + + /* don't leave "live" HW-owned entries for the next guy to step on */ + for (d = iudma->bd_ring; d <= iudma->end_bd; d++) + d->len_stat = 0; + mb(); + + iudma->read_bd = iudma->write_bd = iudma->bd_ring; + iudma->n_bds_used = 0; + + /* set up IRQs, UBUS burst size, and BD base for this channel */ + usb_dmac_writel(udc, ENETDMAC_IR_BUFDONE_MASK, + ENETDMAC_IRMASK_REG, ch_idx); + usb_dmac_writel(udc, 8, ENETDMAC_MAXBURST_REG, ch_idx); + + usb_dmas_writel(udc, iudma->bd_ring_dma, ENETDMAS_RSTART_REG, ch_idx); + usb_dmas_writel(udc, 0, ENETDMAS_SRAM2_REG, ch_idx); +} + +/** + * iudma_init_channel - One-time IUDMA channel initialization. + * @udc: Reference to the device controller. + * @ch_idx: Channel to initialize. + */ +static int iudma_init_channel(struct bcm63xx_udc *udc, unsigned int ch_idx) +{ + struct iudma_ch *iudma = &udc->iudma[ch_idx]; + const struct iudma_ch_cfg *cfg = &iudma_defaults[ch_idx]; + unsigned int n_bds = cfg->n_bds; + struct bcm63xx_ep *bep = NULL; + + iudma->ep_num = cfg->ep_num; + iudma->ch_idx = ch_idx; + iudma->is_tx = !!(ch_idx & 0x01); + if (iudma->ep_num >= 0) { + bep = &udc->bep[iudma->ep_num]; + bep->iudma = iudma; + INIT_LIST_HEAD(&bep->queue); + } + + iudma->bep = bep; + iudma->udc = udc; + + /* ep0 is always active; others are controlled by the gadget driver */ + if (iudma->ep_num <= 0) + iudma->enabled = true; + + iudma->n_bds = n_bds; + iudma->bd_ring = dmam_alloc_coherent(udc->dev, + n_bds * sizeof(struct bcm_enet_desc), + &iudma->bd_ring_dma, GFP_KERNEL); + if (!iudma->bd_ring) + return -ENOMEM; + iudma->end_bd = &iudma->bd_ring[n_bds - 1]; + + return 0; +} + +/** + * iudma_init - One-time initialization of all IUDMA channels. + * @udc: Reference to the device controller. + * + * Enable DMA, flush channels, and enable global IUDMA IRQs. + */ +static int iudma_init(struct bcm63xx_udc *udc) +{ + int i, rc; + + usb_dma_writel(udc, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); + + for (i = 0; i < BCM63XX_NUM_IUDMA; i++) { + rc = iudma_init_channel(udc, i); + if (rc) + return rc; + iudma_reset_channel(udc, &udc->iudma[i]); + } + + usb_dma_writel(udc, BIT(BCM63XX_NUM_IUDMA)-1, ENETDMA_GLB_IRQMASK_REG); + return 0; +} + +/** + * iudma_uninit - Uninitialize IUDMA channels. + * @udc: Reference to the device controller. + * + * Kill global IUDMA IRQs, flush channels, and kill DMA. + */ +static void iudma_uninit(struct bcm63xx_udc *udc) +{ + int i; + + usb_dma_writel(udc, 0, ENETDMA_GLB_IRQMASK_REG); + + for (i = 0; i < BCM63XX_NUM_IUDMA; i++) + iudma_reset_channel(udc, &udc->iudma[i]); + + usb_dma_writel(udc, 0, ENETDMA_CFG_REG); +} + +/*********************************************************************** + * Other low-level USBD operations + ***********************************************************************/ + +/** + * bcm63xx_set_ctrl_irqs - Mask/unmask control path interrupts. + * @udc: Reference to the device controller. + * @enable_irqs: true to enable, false to disable. + */ +static void bcm63xx_set_ctrl_irqs(struct bcm63xx_udc *udc, bool enable_irqs) +{ + u32 val; + + usbd_writel(udc, 0, USBD_STATUS_REG); + + val = BIT(USBD_EVENT_IRQ_USB_RESET) | + BIT(USBD_EVENT_IRQ_SETUP) | + BIT(USBD_EVENT_IRQ_SETCFG) | + BIT(USBD_EVENT_IRQ_SETINTF) | + BIT(USBD_EVENT_IRQ_USB_LINK); + usbd_writel(udc, enable_irqs ? val : 0, USBD_EVENT_IRQ_MASK_REG); + usbd_writel(udc, val, USBD_EVENT_IRQ_STATUS_REG); +} + +/** + * bcm63xx_select_phy_mode - Select between USB device and host mode. + * @udc: Reference to the device controller. + * @is_device: true for device, false for host. + * + * This should probably be reworked to use the drivers/usb/otg + * infrastructure. + * + * By default, the AFE/pullups are disabled in device mode, until + * bcm63xx_select_pullup() is called. + */ +static void bcm63xx_select_phy_mode(struct bcm63xx_udc *udc, bool is_device) +{ + u32 val, portmask = BIT(udc->pd->port_no); + + if (BCMCPU_IS_6328()) { + /* configure pinmux to sense VBUS signal */ + val = bcm_gpio_readl(GPIO_PINMUX_OTHR_REG); + val &= ~GPIO_PINMUX_OTHR_6328_USB_MASK; + val |= is_device ? GPIO_PINMUX_OTHR_6328_USB_DEV : + GPIO_PINMUX_OTHR_6328_USB_HOST; + bcm_gpio_writel(val, GPIO_PINMUX_OTHR_REG); + } + + val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_UTMI_CTL_6368_REG); + if (is_device) { + val |= (portmask << USBH_PRIV_UTMI_CTL_HOSTB_SHIFT); + val |= (portmask << USBH_PRIV_UTMI_CTL_NODRIV_SHIFT); + } else { + val &= ~(portmask << USBH_PRIV_UTMI_CTL_HOSTB_SHIFT); + val &= ~(portmask << USBH_PRIV_UTMI_CTL_NODRIV_SHIFT); + } + bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_UTMI_CTL_6368_REG); + + val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG); + if (is_device) + val |= USBH_PRIV_SWAP_USBD_MASK; + else + val &= ~USBH_PRIV_SWAP_USBD_MASK; + bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_SWAP_6368_REG); +} + +/** + * bcm63xx_select_pullup - Enable/disable the pullup on D+ + * @udc: Reference to the device controller. + * @is_on: true to enable the pullup, false to disable. + * + * If the pullup is active, the host will sense a FS/HS device connected to + * the port. If the pullup is inactive, the host will think the USB + * device has been disconnected. + */ +static void bcm63xx_select_pullup(struct bcm63xx_udc *udc, bool is_on) +{ + u32 val, portmask = BIT(udc->pd->port_no); + + val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_UTMI_CTL_6368_REG); + if (is_on) + val &= ~(portmask << USBH_PRIV_UTMI_CTL_NODRIV_SHIFT); + else + val |= (portmask << USBH_PRIV_UTMI_CTL_NODRIV_SHIFT); + bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_UTMI_CTL_6368_REG); +} + +/** + * bcm63xx_uninit_udc_hw - Shut down the hardware prior to driver removal. + * @udc: Reference to the device controller. + * + * This just masks the IUDMA IRQs and releases the clocks. It is assumed + * that bcm63xx_udc_stop() has already run, and the clocks are stopped. + */ +static void bcm63xx_uninit_udc_hw(struct bcm63xx_udc *udc) +{ + set_clocks(udc, true); + iudma_uninit(udc); + set_clocks(udc, false); + + clk_put(udc->usbd_clk); + clk_put(udc->usbh_clk); +} + +/** + * bcm63xx_init_udc_hw - Initialize the controller hardware and data structures. + * @udc: Reference to the device controller. + */ +static int bcm63xx_init_udc_hw(struct bcm63xx_udc *udc) +{ + int i, rc = 0; + u32 val; + + udc->ep0_ctrl_buf = devm_kzalloc(udc->dev, BCM63XX_MAX_CTRL_PKT, + GFP_KERNEL); + if (!udc->ep0_ctrl_buf) + return -ENOMEM; + + INIT_LIST_HEAD(&udc->gadget.ep_list); + for (i = 0; i < BCM63XX_NUM_EP; i++) { + struct bcm63xx_ep *bep = &udc->bep[i]; + + bep->ep.name = bcm63xx_ep_name[i]; + bep->ep_num = i; + bep->ep.ops = &bcm63xx_udc_ep_ops; + list_add_tail(&bep->ep.ep_list, &udc->gadget.ep_list); + bep->halted = 0; + usb_ep_set_maxpacket_limit(&bep->ep, BCM63XX_MAX_CTRL_PKT); + bep->udc = udc; + bep->ep.desc = NULL; + INIT_LIST_HEAD(&bep->queue); + } + + udc->gadget.ep0 = &udc->bep[0].ep; + list_del(&udc->bep[0].ep.ep_list); + + udc->gadget.speed = USB_SPEED_UNKNOWN; + udc->ep0state = EP0_SHUTDOWN; + + udc->usbh_clk = clk_get(udc->dev, "usbh"); + if (IS_ERR(udc->usbh_clk)) + return -EIO; + + udc->usbd_clk = clk_get(udc->dev, "usbd"); + if (IS_ERR(udc->usbd_clk)) { + clk_put(udc->usbh_clk); + return -EIO; + } + + set_clocks(udc, true); + + val = USBD_CONTROL_AUTO_CSRS_MASK | + USBD_CONTROL_DONE_CSRS_MASK | + (irq_coalesce ? USBD_CONTROL_RXZSCFG_MASK : 0); + usbd_writel(udc, val, USBD_CONTROL_REG); + + val = USBD_STRAPS_APP_SELF_PWR_MASK | + USBD_STRAPS_APP_RAM_IF_MASK | + USBD_STRAPS_APP_CSRPRGSUP_MASK | + USBD_STRAPS_APP_8BITPHY_MASK | + USBD_STRAPS_APP_RMTWKUP_MASK; + + if (udc->gadget.max_speed == USB_SPEED_HIGH) + val |= (BCM63XX_SPD_HIGH << USBD_STRAPS_SPEED_SHIFT); + else + val |= (BCM63XX_SPD_FULL << USBD_STRAPS_SPEED_SHIFT); + usbd_writel(udc, val, USBD_STRAPS_REG); + + bcm63xx_set_ctrl_irqs(udc, false); + + usbd_writel(udc, 0, USBD_EVENT_IRQ_CFG_LO_REG); + + val = USBD_EVENT_IRQ_CFG_FALLING(USBD_EVENT_IRQ_ENUM_ON) | + USBD_EVENT_IRQ_CFG_FALLING(USBD_EVENT_IRQ_SET_CSRS); + usbd_writel(udc, val, USBD_EVENT_IRQ_CFG_HI_REG); + + rc = iudma_init(udc); + set_clocks(udc, false); + if (rc) + bcm63xx_uninit_udc_hw(udc); + + return 0; +} + +/*********************************************************************** + * Standard EP gadget operations + ***********************************************************************/ + +/** + * bcm63xx_ep_enable - Enable one endpoint. + * @ep: Endpoint to enable. + * @desc: Contains max packet, direction, etc. + * + * Most of the endpoint parameters are fixed in this controller, so there + * isn't much for this function to do. + */ +static int bcm63xx_ep_enable(struct usb_ep *ep, + const struct usb_endpoint_descriptor *desc) +{ + struct bcm63xx_ep *bep = our_ep(ep); + struct bcm63xx_udc *udc = bep->udc; + struct iudma_ch *iudma = bep->iudma; + unsigned long flags; + + if (!ep || !desc || ep->name == bcm63xx_ep0name) + return -EINVAL; + + if (!udc->driver) + return -ESHUTDOWN; + + spin_lock_irqsave(&udc->lock, flags); + if (iudma->enabled) { + spin_unlock_irqrestore(&udc->lock, flags); + return -EINVAL; + } + + iudma->enabled = true; + BUG_ON(!list_empty(&bep->queue)); + + iudma_reset_channel(udc, iudma); + + bep->halted = 0; + bcm63xx_set_stall(udc, bep, false); + clear_bit(bep->ep_num, &udc->wedgemap); + + ep->desc = desc; + ep->maxpacket = usb_endpoint_maxp(desc); + + spin_unlock_irqrestore(&udc->lock, flags); + return 0; +} + +/** + * bcm63xx_ep_disable - Disable one endpoint. + * @ep: Endpoint to disable. + */ +static int bcm63xx_ep_disable(struct usb_ep *ep) +{ + struct bcm63xx_ep *bep = our_ep(ep); + struct bcm63xx_udc *udc = bep->udc; + struct iudma_ch *iudma = bep->iudma; + struct list_head *pos, *n; + unsigned long flags; + + if (!ep || !ep->desc) + return -EINVAL; + + spin_lock_irqsave(&udc->lock, flags); + if (!iudma->enabled) { + spin_unlock_irqrestore(&udc->lock, flags); + return -EINVAL; + } + iudma->enabled = false; + + iudma_reset_channel(udc, iudma); + + if (!list_empty(&bep->queue)) { + list_for_each_safe(pos, n, &bep->queue) { + struct bcm63xx_req *breq = + list_entry(pos, struct bcm63xx_req, queue); + + usb_gadget_unmap_request(&udc->gadget, &breq->req, + iudma->is_tx); + list_del(&breq->queue); + breq->req.status = -ESHUTDOWN; + + spin_unlock_irqrestore(&udc->lock, flags); + breq->req.complete(&iudma->bep->ep, &breq->req); + spin_lock_irqsave(&udc->lock, flags); + } + } + ep->desc = NULL; + + spin_unlock_irqrestore(&udc->lock, flags); + return 0; +} + +/** + * bcm63xx_udc_alloc_request - Allocate a new request. + * @ep: Endpoint associated with the request. + * @mem_flags: Flags to pass to kzalloc(). + */ +static struct usb_request *bcm63xx_udc_alloc_request(struct usb_ep *ep, + gfp_t mem_flags) +{ + struct bcm63xx_req *breq; + + breq = kzalloc(sizeof(*breq), mem_flags); + if (!breq) + return NULL; + return &breq->req; +} + +/** + * bcm63xx_udc_free_request - Free a request. + * @ep: Endpoint associated with the request. + * @req: Request to free. + */ +static void bcm63xx_udc_free_request(struct usb_ep *ep, + struct usb_request *req) +{ + struct bcm63xx_req *breq = our_req(req); + kfree(breq); +} + +/** + * bcm63xx_udc_queue - Queue up a new request. + * @ep: Endpoint associated with the request. + * @req: Request to add. + * @mem_flags: Unused. + * + * If the queue is empty, start this request immediately. Otherwise, add + * it to the list. + * + * ep0 replies are sent through this function from the gadget driver, but + * they are treated differently because they need to be handled by the ep0 + * state machine. (Sometimes they are replies to control requests that + * were spoofed by this driver, and so they shouldn't be transmitted at all.) + */ +static int bcm63xx_udc_queue(struct usb_ep *ep, struct usb_request *req, + gfp_t mem_flags) +{ + struct bcm63xx_ep *bep = our_ep(ep); + struct bcm63xx_udc *udc = bep->udc; + struct bcm63xx_req *breq = our_req(req); + unsigned long flags; + int rc = 0; + + if (unlikely(!req || !req->complete || !req->buf || !ep)) + return -EINVAL; + + req->actual = 0; + req->status = 0; + breq->offset = 0; + + if (bep == &udc->bep[0]) { + /* only one reply per request, please */ + if (udc->ep0_reply) + return -EINVAL; + + udc->ep0_reply = req; + schedule_work(&udc->ep0_wq); + return 0; + } + + spin_lock_irqsave(&udc->lock, flags); + if (!bep->iudma->enabled) { + rc = -ESHUTDOWN; + goto out; + } + + rc = usb_gadget_map_request(&udc->gadget, req, bep->iudma->is_tx); + if (rc == 0) { + list_add_tail(&breq->queue, &bep->queue); + if (list_is_singular(&bep->queue)) + iudma_write(udc, bep->iudma, breq); + } + +out: + spin_unlock_irqrestore(&udc->lock, flags); + return rc; +} + +/** + * bcm63xx_udc_dequeue - Remove a pending request from the queue. + * @ep: Endpoint associated with the request. + * @req: Request to remove. + * + * If the request is not at the head of the queue, this is easy - just nuke + * it. If the request is at the head of the queue, we'll need to stop the + * DMA transaction and then queue up the successor. + */ +static int bcm63xx_udc_dequeue(struct usb_ep *ep, struct usb_request *req) +{ + struct bcm63xx_ep *bep = our_ep(ep); + struct bcm63xx_udc *udc = bep->udc; + struct bcm63xx_req *breq = our_req(req), *cur; + unsigned long flags; + int rc = 0; + + spin_lock_irqsave(&udc->lock, flags); + if (list_empty(&bep->queue)) { + rc = -EINVAL; + goto out; + } + + cur = list_first_entry(&bep->queue, struct bcm63xx_req, queue); + usb_gadget_unmap_request(&udc->gadget, &breq->req, bep->iudma->is_tx); + + if (breq == cur) { + iudma_reset_channel(udc, bep->iudma); + list_del(&breq->queue); + + if (!list_empty(&bep->queue)) { + struct bcm63xx_req *next; + + next = list_first_entry(&bep->queue, + struct bcm63xx_req, queue); + iudma_write(udc, bep->iudma, next); + } + } else { + list_del(&breq->queue); + } + +out: + spin_unlock_irqrestore(&udc->lock, flags); + + req->status = -ESHUTDOWN; + req->complete(ep, req); + + return rc; +} + +/** + * bcm63xx_udc_set_halt - Enable/disable STALL flag in the hardware. + * @ep: Endpoint to halt. + * @value: Zero to clear halt; nonzero to set halt. + * + * See comments in bcm63xx_update_wedge(). + */ +static int bcm63xx_udc_set_halt(struct usb_ep *ep, int value) +{ + struct bcm63xx_ep *bep = our_ep(ep); + struct bcm63xx_udc *udc = bep->udc; + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + bcm63xx_set_stall(udc, bep, !!value); + bep->halted = value; + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/** + * bcm63xx_udc_set_wedge - Stall the endpoint until the next reset. + * @ep: Endpoint to wedge. + * + * See comments in bcm63xx_update_wedge(). + */ +static int bcm63xx_udc_set_wedge(struct usb_ep *ep) +{ + struct bcm63xx_ep *bep = our_ep(ep); + struct bcm63xx_udc *udc = bep->udc; + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + set_bit(bep->ep_num, &udc->wedgemap); + bcm63xx_set_stall(udc, bep, true); + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static const struct usb_ep_ops bcm63xx_udc_ep_ops = { + .enable = bcm63xx_ep_enable, + .disable = bcm63xx_ep_disable, + + .alloc_request = bcm63xx_udc_alloc_request, + .free_request = bcm63xx_udc_free_request, + + .queue = bcm63xx_udc_queue, + .dequeue = bcm63xx_udc_dequeue, + + .set_halt = bcm63xx_udc_set_halt, + .set_wedge = bcm63xx_udc_set_wedge, +}; + +/*********************************************************************** + * EP0 handling + ***********************************************************************/ + +/** + * bcm63xx_ep0_setup_callback - Drop spinlock to invoke ->setup callback. + * @udc: Reference to the device controller. + * @ctrl: 8-byte SETUP request. + */ +static int bcm63xx_ep0_setup_callback(struct bcm63xx_udc *udc, + struct usb_ctrlrequest *ctrl) +{ + int rc; + + spin_unlock_irq(&udc->lock); + rc = udc->driver->setup(&udc->gadget, ctrl); + spin_lock_irq(&udc->lock); + return rc; +} + +/** + * bcm63xx_ep0_spoof_set_cfg - Synthesize a SET_CONFIGURATION request. + * @udc: Reference to the device controller. + * + * Many standard requests are handled automatically in the hardware, but + * we still need to pass them to the gadget driver so that it can + * reconfigure the interfaces/endpoints if necessary. + * + * Unfortunately we are not able to send a STALL response if the host + * requests an invalid configuration. If this happens, we'll have to be + * content with printing a warning. + */ +static int bcm63xx_ep0_spoof_set_cfg(struct bcm63xx_udc *udc) +{ + struct usb_ctrlrequest ctrl; + int rc; + + ctrl.bRequestType = USB_DIR_OUT | USB_RECIP_DEVICE; + ctrl.bRequest = USB_REQ_SET_CONFIGURATION; + ctrl.wValue = cpu_to_le16(udc->cfg); + ctrl.wIndex = 0; + ctrl.wLength = 0; + + rc = bcm63xx_ep0_setup_callback(udc, &ctrl); + if (rc < 0) { + dev_warn_ratelimited(udc->dev, + "hardware auto-acked bad SET_CONFIGURATION(%d) request\n", + udc->cfg); + } + return rc; +} + +/** + * bcm63xx_ep0_spoof_set_iface - Synthesize a SET_INTERFACE request. + * @udc: Reference to the device controller. + */ +static int bcm63xx_ep0_spoof_set_iface(struct bcm63xx_udc *udc) +{ + struct usb_ctrlrequest ctrl; + int rc; + + ctrl.bRequestType = USB_DIR_OUT | USB_RECIP_INTERFACE; + ctrl.bRequest = USB_REQ_SET_INTERFACE; + ctrl.wValue = cpu_to_le16(udc->alt_iface); + ctrl.wIndex = cpu_to_le16(udc->iface); + ctrl.wLength = 0; + + rc = bcm63xx_ep0_setup_callback(udc, &ctrl); + if (rc < 0) { + dev_warn_ratelimited(udc->dev, + "hardware auto-acked bad SET_INTERFACE(%d,%d) request\n", + udc->iface, udc->alt_iface); + } + return rc; +} + +/** + * bcm63xx_ep0_map_write - dma_map and iudma_write a single request. + * @udc: Reference to the device controller. + * @ch_idx: IUDMA channel number. + * @req: USB gadget layer representation of the request. + */ +static void bcm63xx_ep0_map_write(struct bcm63xx_udc *udc, int ch_idx, + struct usb_request *req) +{ + struct bcm63xx_req *breq = our_req(req); + struct iudma_ch *iudma = &udc->iudma[ch_idx]; + + BUG_ON(udc->ep0_request); + udc->ep0_request = req; + + req->actual = 0; + breq->offset = 0; + usb_gadget_map_request(&udc->gadget, req, iudma->is_tx); + iudma_write(udc, iudma, breq); +} + +/** + * bcm63xx_ep0_complete - Set completion status and "stage" the callback. + * @udc: Reference to the device controller. + * @req: USB gadget layer representation of the request. + * @status: Status to return to the gadget driver. + */ +static void bcm63xx_ep0_complete(struct bcm63xx_udc *udc, + struct usb_request *req, int status) +{ + req->status = status; + if (status) + req->actual = 0; + if (req->complete) { + spin_unlock_irq(&udc->lock); + req->complete(&udc->bep[0].ep, req); + spin_lock_irq(&udc->lock); + } +} + +/** + * bcm63xx_ep0_nuke_reply - Abort request from the gadget driver due to + * reset/shutdown. + * @udc: Reference to the device controller. + * @is_tx: Nonzero for TX (IN), zero for RX (OUT). + */ +static void bcm63xx_ep0_nuke_reply(struct bcm63xx_udc *udc, int is_tx) +{ + struct usb_request *req = udc->ep0_reply; + + udc->ep0_reply = NULL; + usb_gadget_unmap_request(&udc->gadget, req, is_tx); + if (udc->ep0_request == req) { + udc->ep0_req_completed = 0; + udc->ep0_request = NULL; + } + bcm63xx_ep0_complete(udc, req, -ESHUTDOWN); +} + +/** + * bcm63xx_ep0_read_complete - Close out the pending ep0 request; return + * transfer len. + * @udc: Reference to the device controller. + */ +static int bcm63xx_ep0_read_complete(struct bcm63xx_udc *udc) +{ + struct usb_request *req = udc->ep0_request; + + udc->ep0_req_completed = 0; + udc->ep0_request = NULL; + + return req->actual; +} + +/** + * bcm63xx_ep0_internal_request - Helper function to submit an ep0 request. + * @udc: Reference to the device controller. + * @ch_idx: IUDMA channel number. + * @length: Number of bytes to TX/RX. + * + * Used for simple transfers performed by the ep0 worker. This will always + * use ep0_ctrl_req / ep0_ctrl_buf. + */ +static void bcm63xx_ep0_internal_request(struct bcm63xx_udc *udc, int ch_idx, + int length) +{ + struct usb_request *req = &udc->ep0_ctrl_req.req; + + req->buf = udc->ep0_ctrl_buf; + req->length = length; + req->complete = NULL; + + bcm63xx_ep0_map_write(udc, ch_idx, req); +} + +/** + * bcm63xx_ep0_do_setup - Parse new SETUP packet and decide how to handle it. + * @udc: Reference to the device controller. + * + * EP0_IDLE probably shouldn't ever happen. EP0_REQUEUE means we're ready + * for the next packet. Anything else means the transaction requires multiple + * stages of handling. + */ +static enum bcm63xx_ep0_state bcm63xx_ep0_do_setup(struct bcm63xx_udc *udc) +{ + int rc; + struct usb_ctrlrequest *ctrl = (void *)udc->ep0_ctrl_buf; + + rc = bcm63xx_ep0_read_complete(udc); + + if (rc < 0) { + dev_err(udc->dev, "missing SETUP packet\n"); + return EP0_IDLE; + } + + /* + * Handle 0-byte IN STATUS acknowledgement. The hardware doesn't + * ALWAYS deliver these 100% of the time, so if we happen to see one, + * just throw it away. + */ + if (rc == 0) + return EP0_REQUEUE; + + /* Drop malformed SETUP packets */ + if (rc != sizeof(*ctrl)) { + dev_warn_ratelimited(udc->dev, + "malformed SETUP packet (%d bytes)\n", rc); + return EP0_REQUEUE; + } + + /* Process new SETUP packet arriving on ep0 */ + rc = bcm63xx_ep0_setup_callback(udc, ctrl); + if (rc < 0) { + bcm63xx_set_stall(udc, &udc->bep[0], true); + return EP0_REQUEUE; + } + + if (!ctrl->wLength) + return EP0_REQUEUE; + else if (ctrl->bRequestType & USB_DIR_IN) + return EP0_IN_DATA_PHASE_SETUP; + else + return EP0_OUT_DATA_PHASE_SETUP; +} + +/** + * bcm63xx_ep0_do_idle - Check for outstanding requests if ep0 is idle. + * @udc: Reference to the device controller. + * + * In state EP0_IDLE, the RX descriptor is either pending, or has been + * filled with a SETUP packet from the host. This function handles new + * SETUP packets, control IRQ events (which can generate fake SETUP packets), + * and reset/shutdown events. + * + * Returns 0 if work was done; -EAGAIN if nothing to do. + */ +static int bcm63xx_ep0_do_idle(struct bcm63xx_udc *udc) +{ + if (udc->ep0_req_reset) { + udc->ep0_req_reset = 0; + } else if (udc->ep0_req_set_cfg) { + udc->ep0_req_set_cfg = 0; + if (bcm63xx_ep0_spoof_set_cfg(udc) >= 0) + udc->ep0state = EP0_IN_FAKE_STATUS_PHASE; + } else if (udc->ep0_req_set_iface) { + udc->ep0_req_set_iface = 0; + if (bcm63xx_ep0_spoof_set_iface(udc) >= 0) + udc->ep0state = EP0_IN_FAKE_STATUS_PHASE; + } else if (udc->ep0_req_completed) { + udc->ep0state = bcm63xx_ep0_do_setup(udc); + return udc->ep0state == EP0_IDLE ? -EAGAIN : 0; + } else if (udc->ep0_req_shutdown) { + udc->ep0_req_shutdown = 0; + udc->ep0_req_completed = 0; + udc->ep0_request = NULL; + iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_RXCHAN]); + usb_gadget_unmap_request(&udc->gadget, + &udc->ep0_ctrl_req.req, 0); + + /* bcm63xx_udc_pullup() is waiting for this */ + mb(); + udc->ep0state = EP0_SHUTDOWN; + } else if (udc->ep0_reply) { + /* + * This could happen if a USB RESET shows up during an ep0 + * transaction (especially if a laggy driver like gadgetfs + * is in use). + */ + dev_warn(udc->dev, "nuking unexpected reply\n"); + bcm63xx_ep0_nuke_reply(udc, 0); + } else { + return -EAGAIN; + } + + return 0; +} + +/** + * bcm63xx_ep0_one_round - Handle the current ep0 state. + * @udc: Reference to the device controller. + * + * Returns 0 if work was done; -EAGAIN if nothing to do. + */ +static int bcm63xx_ep0_one_round(struct bcm63xx_udc *udc) +{ + enum bcm63xx_ep0_state ep0state = udc->ep0state; + bool shutdown = udc->ep0_req_reset || udc->ep0_req_shutdown; + + switch (udc->ep0state) { + case EP0_REQUEUE: + /* set up descriptor to receive SETUP packet */ + bcm63xx_ep0_internal_request(udc, IUDMA_EP0_RXCHAN, + BCM63XX_MAX_CTRL_PKT); + ep0state = EP0_IDLE; + break; + case EP0_IDLE: + return bcm63xx_ep0_do_idle(udc); + case EP0_IN_DATA_PHASE_SETUP: + /* + * Normal case: TX request is in ep0_reply (queued by the + * callback), or will be queued shortly. When it's here, + * send it to the HW and go to EP0_IN_DATA_PHASE_COMPLETE. + * + * Shutdown case: Stop waiting for the reply. Just + * REQUEUE->IDLE. The gadget driver is NOT expected to + * queue anything else now. + */ + if (udc->ep0_reply) { + bcm63xx_ep0_map_write(udc, IUDMA_EP0_TXCHAN, + udc->ep0_reply); + ep0state = EP0_IN_DATA_PHASE_COMPLETE; + } else if (shutdown) { + ep0state = EP0_REQUEUE; + } + break; + case EP0_IN_DATA_PHASE_COMPLETE: { + /* + * Normal case: TX packet (ep0_reply) is in flight; wait for + * it to finish, then go back to REQUEUE->IDLE. + * + * Shutdown case: Reset the TX channel, send -ESHUTDOWN + * completion to the gadget driver, then REQUEUE->IDLE. + */ + if (udc->ep0_req_completed) { + udc->ep0_reply = NULL; + bcm63xx_ep0_read_complete(udc); + /* + * the "ack" sometimes gets eaten (see + * bcm63xx_ep0_do_idle) + */ + ep0state = EP0_REQUEUE; + } else if (shutdown) { + iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_TXCHAN]); + bcm63xx_ep0_nuke_reply(udc, 1); + ep0state = EP0_REQUEUE; + } + break; + } + case EP0_OUT_DATA_PHASE_SETUP: + /* Similar behavior to EP0_IN_DATA_PHASE_SETUP */ + if (udc->ep0_reply) { + bcm63xx_ep0_map_write(udc, IUDMA_EP0_RXCHAN, + udc->ep0_reply); + ep0state = EP0_OUT_DATA_PHASE_COMPLETE; + } else if (shutdown) { + ep0state = EP0_REQUEUE; + } + break; + case EP0_OUT_DATA_PHASE_COMPLETE: { + /* Similar behavior to EP0_IN_DATA_PHASE_COMPLETE */ + if (udc->ep0_req_completed) { + udc->ep0_reply = NULL; + bcm63xx_ep0_read_complete(udc); + + /* send 0-byte ack to host */ + bcm63xx_ep0_internal_request(udc, IUDMA_EP0_TXCHAN, 0); + ep0state = EP0_OUT_STATUS_PHASE; + } else if (shutdown) { + iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_RXCHAN]); + bcm63xx_ep0_nuke_reply(udc, 0); + ep0state = EP0_REQUEUE; + } + break; + } + case EP0_OUT_STATUS_PHASE: + /* + * Normal case: 0-byte OUT ack packet is in flight; wait + * for it to finish, then go back to REQUEUE->IDLE. + * + * Shutdown case: just cancel the transmission. Don't bother + * calling the completion, because it originated from this + * function anyway. Then go back to REQUEUE->IDLE. + */ + if (udc->ep0_req_completed) { + bcm63xx_ep0_read_complete(udc); + ep0state = EP0_REQUEUE; + } else if (shutdown) { + iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_TXCHAN]); + udc->ep0_request = NULL; + ep0state = EP0_REQUEUE; + } + break; + case EP0_IN_FAKE_STATUS_PHASE: { + /* + * Normal case: we spoofed a SETUP packet and are now + * waiting for the gadget driver to send a 0-byte reply. + * This doesn't actually get sent to the HW because the + * HW has already sent its own reply. Once we get the + * response, return to IDLE. + * + * Shutdown case: return to IDLE immediately. + * + * Note that the ep0 RX descriptor has remained queued + * (and possibly unfilled) during this entire transaction. + * The HW datapath (IUDMA) never even sees SET_CONFIGURATION + * or SET_INTERFACE transactions. + */ + struct usb_request *r = udc->ep0_reply; + + if (!r) { + if (shutdown) + ep0state = EP0_IDLE; + break; + } + + bcm63xx_ep0_complete(udc, r, 0); + udc->ep0_reply = NULL; + ep0state = EP0_IDLE; + break; + } + case EP0_SHUTDOWN: + break; + } + + if (udc->ep0state == ep0state) + return -EAGAIN; + + udc->ep0state = ep0state; + return 0; +} + +/** + * bcm63xx_ep0_process - ep0 worker thread / state machine. + * @w: Workqueue struct. + * + * bcm63xx_ep0_process is triggered any time an event occurs on ep0. It + * is used to synchronize ep0 events and ensure that both HW and SW events + * occur in a well-defined order. When the ep0 IUDMA queues are idle, it may + * synthesize SET_CONFIGURATION / SET_INTERFACE requests that were consumed + * by the USBD hardware. + * + * The worker function will continue iterating around the state machine + * until there is nothing left to do. Usually "nothing left to do" means + * that we're waiting for a new event from the hardware. + */ +static void bcm63xx_ep0_process(struct work_struct *w) +{ + struct bcm63xx_udc *udc = container_of(w, struct bcm63xx_udc, ep0_wq); + spin_lock_irq(&udc->lock); + while (bcm63xx_ep0_one_round(udc) == 0) + ; + spin_unlock_irq(&udc->lock); +} + +/*********************************************************************** + * Standard UDC gadget operations + ***********************************************************************/ + +/** + * bcm63xx_udc_get_frame - Read current SOF frame number from the HW. + * @gadget: USB slave device. + */ +static int bcm63xx_udc_get_frame(struct usb_gadget *gadget) +{ + struct bcm63xx_udc *udc = gadget_to_udc(gadget); + + return (usbd_readl(udc, USBD_STATUS_REG) & + USBD_STATUS_SOF_MASK) >> USBD_STATUS_SOF_SHIFT; +} + +/** + * bcm63xx_udc_pullup - Enable/disable pullup on D+ line. + * @gadget: USB slave device. + * @is_on: 0 to disable pullup, 1 to enable. + * + * See notes in bcm63xx_select_pullup(). + */ +static int bcm63xx_udc_pullup(struct usb_gadget *gadget, int is_on) +{ + struct bcm63xx_udc *udc = gadget_to_udc(gadget); + unsigned long flags; + int i, rc = -EINVAL; + + spin_lock_irqsave(&udc->lock, flags); + if (is_on && udc->ep0state == EP0_SHUTDOWN) { + udc->gadget.speed = USB_SPEED_UNKNOWN; + udc->ep0state = EP0_REQUEUE; + bcm63xx_fifo_setup(udc); + bcm63xx_fifo_reset(udc); + bcm63xx_ep_setup(udc); + + bitmap_zero(&udc->wedgemap, BCM63XX_NUM_EP); + for (i = 0; i < BCM63XX_NUM_EP; i++) + bcm63xx_set_stall(udc, &udc->bep[i], false); + + bcm63xx_set_ctrl_irqs(udc, true); + bcm63xx_select_pullup(gadget_to_udc(gadget), true); + rc = 0; + } else if (!is_on && udc->ep0state != EP0_SHUTDOWN) { + bcm63xx_select_pullup(gadget_to_udc(gadget), false); + + udc->ep0_req_shutdown = 1; + spin_unlock_irqrestore(&udc->lock, flags); + + while (1) { + schedule_work(&udc->ep0_wq); + if (udc->ep0state == EP0_SHUTDOWN) + break; + msleep(50); + } + bcm63xx_set_ctrl_irqs(udc, false); + cancel_work_sync(&udc->ep0_wq); + return 0; + } + + spin_unlock_irqrestore(&udc->lock, flags); + return rc; +} + +/** + * bcm63xx_udc_start - Start the controller. + * @gadget: USB slave device. + * @driver: Driver for USB slave devices. + */ +static int bcm63xx_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct bcm63xx_udc *udc = gadget_to_udc(gadget); + unsigned long flags; + + if (!driver || driver->max_speed < USB_SPEED_HIGH || + !driver->setup) + return -EINVAL; + if (!udc) + return -ENODEV; + if (udc->driver) + return -EBUSY; + + spin_lock_irqsave(&udc->lock, flags); + + set_clocks(udc, true); + bcm63xx_fifo_setup(udc); + bcm63xx_ep_init(udc); + bcm63xx_ep_setup(udc); + bcm63xx_fifo_reset(udc); + bcm63xx_select_phy_mode(udc, true); + + udc->driver = driver; + driver->driver.bus = NULL; + udc->gadget.dev.of_node = udc->dev->of_node; + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/** + * bcm63xx_udc_stop - Shut down the controller. + * @gadget: USB slave device. + * @driver: Driver for USB slave devices. + */ +static int bcm63xx_udc_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct bcm63xx_udc *udc = gadget_to_udc(gadget); + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + + udc->driver = NULL; + + /* + * If we switch the PHY too abruptly after dropping D+, the host + * will often complain: + * + * hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling... + */ + msleep(100); + + bcm63xx_select_phy_mode(udc, false); + set_clocks(udc, false); + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static const struct usb_gadget_ops bcm63xx_udc_ops = { + .get_frame = bcm63xx_udc_get_frame, + .pullup = bcm63xx_udc_pullup, + .udc_start = bcm63xx_udc_start, + .udc_stop = bcm63xx_udc_stop, +}; + +/*********************************************************************** + * IRQ handling + ***********************************************************************/ + +/** + * bcm63xx_update_cfg_iface - Read current configuration/interface settings. + * @udc: Reference to the device controller. + * + * This controller intercepts SET_CONFIGURATION and SET_INTERFACE messages. + * The driver never sees the raw control packets coming in on the ep0 + * IUDMA channel, but at least we get an interrupt event to tell us that + * new values are waiting in the USBD_STATUS register. + */ +static void bcm63xx_update_cfg_iface(struct bcm63xx_udc *udc) +{ + u32 reg = usbd_readl(udc, USBD_STATUS_REG); + + udc->cfg = (reg & USBD_STATUS_CFG_MASK) >> USBD_STATUS_CFG_SHIFT; + udc->iface = (reg & USBD_STATUS_INTF_MASK) >> USBD_STATUS_INTF_SHIFT; + udc->alt_iface = (reg & USBD_STATUS_ALTINTF_MASK) >> + USBD_STATUS_ALTINTF_SHIFT; + bcm63xx_ep_setup(udc); +} + +/** + * bcm63xx_update_link_speed - Check to see if the link speed has changed. + * @udc: Reference to the device controller. + * + * The link speed update coincides with a SETUP IRQ. Returns 1 if the + * speed has changed, so that the caller can update the endpoint settings. + */ +static int bcm63xx_update_link_speed(struct bcm63xx_udc *udc) +{ + u32 reg = usbd_readl(udc, USBD_STATUS_REG); + enum usb_device_speed oldspeed = udc->gadget.speed; + + switch ((reg & USBD_STATUS_SPD_MASK) >> USBD_STATUS_SPD_SHIFT) { + case BCM63XX_SPD_HIGH: + udc->gadget.speed = USB_SPEED_HIGH; + break; + case BCM63XX_SPD_FULL: + udc->gadget.speed = USB_SPEED_FULL; + break; + default: + /* this should never happen */ + udc->gadget.speed = USB_SPEED_UNKNOWN; + dev_err(udc->dev, + "received SETUP packet with invalid link speed\n"); + return 0; + } + + if (udc->gadget.speed != oldspeed) { + dev_info(udc->dev, "link up, %s-speed mode\n", + udc->gadget.speed == USB_SPEED_HIGH ? "high" : "full"); + return 1; + } else { + return 0; + } +} + +/** + * bcm63xx_update_wedge - Iterate through wedged endpoints. + * @udc: Reference to the device controller. + * @new_status: true to "refresh" wedge status; false to clear it. + * + * On a SETUP interrupt, we need to manually "refresh" the wedge status + * because the controller hardware is designed to automatically clear + * stalls in response to a CLEAR_FEATURE request from the host. + * + * On a RESET interrupt, we do want to restore all wedged endpoints. + */ +static void bcm63xx_update_wedge(struct bcm63xx_udc *udc, bool new_status) +{ + int i; + + for_each_set_bit(i, &udc->wedgemap, BCM63XX_NUM_EP) { + bcm63xx_set_stall(udc, &udc->bep[i], new_status); + if (!new_status) + clear_bit(i, &udc->wedgemap); + } +} + +/** + * bcm63xx_udc_ctrl_isr - ISR for control path events (USBD). + * @irq: IRQ number (unused). + * @dev_id: Reference to the device controller. + * + * This is where we handle link (VBUS) down, USB reset, speed changes, + * SET_CONFIGURATION, and SET_INTERFACE events. + */ +static irqreturn_t bcm63xx_udc_ctrl_isr(int irq, void *dev_id) +{ + struct bcm63xx_udc *udc = dev_id; + u32 stat; + bool disconnected = false; + + stat = usbd_readl(udc, USBD_EVENT_IRQ_STATUS_REG) & + usbd_readl(udc, USBD_EVENT_IRQ_MASK_REG); + + usbd_writel(udc, stat, USBD_EVENT_IRQ_STATUS_REG); + + spin_lock(&udc->lock); + if (stat & BIT(USBD_EVENT_IRQ_USB_LINK)) { + /* VBUS toggled */ + + if (!(usbd_readl(udc, USBD_EVENTS_REG) & + USBD_EVENTS_USB_LINK_MASK) && + udc->gadget.speed != USB_SPEED_UNKNOWN) + dev_info(udc->dev, "link down\n"); + + udc->gadget.speed = USB_SPEED_UNKNOWN; + disconnected = true; + } + if (stat & BIT(USBD_EVENT_IRQ_USB_RESET)) { + bcm63xx_fifo_setup(udc); + bcm63xx_fifo_reset(udc); + bcm63xx_ep_setup(udc); + + bcm63xx_update_wedge(udc, false); + + udc->ep0_req_reset = 1; + schedule_work(&udc->ep0_wq); + disconnected = true; + } + if (stat & BIT(USBD_EVENT_IRQ_SETUP)) { + if (bcm63xx_update_link_speed(udc)) { + bcm63xx_fifo_setup(udc); + bcm63xx_ep_setup(udc); + } + bcm63xx_update_wedge(udc, true); + } + if (stat & BIT(USBD_EVENT_IRQ_SETCFG)) { + bcm63xx_update_cfg_iface(udc); + udc->ep0_req_set_cfg = 1; + schedule_work(&udc->ep0_wq); + } + if (stat & BIT(USBD_EVENT_IRQ_SETINTF)) { + bcm63xx_update_cfg_iface(udc); + udc->ep0_req_set_iface = 1; + schedule_work(&udc->ep0_wq); + } + spin_unlock(&udc->lock); + + if (disconnected && udc->driver) + udc->driver->disconnect(&udc->gadget); + + return IRQ_HANDLED; +} + +/** + * bcm63xx_udc_data_isr - ISR for data path events (IUDMA). + * @irq: IRQ number (unused). + * @dev_id: Reference to the IUDMA channel that generated the interrupt. + * + * For the two ep0 channels, we have special handling that triggers the + * ep0 worker thread. For normal bulk/intr channels, either queue up + * the next buffer descriptor for the transaction (incomplete transaction), + * or invoke the completion callback (complete transactions). + */ +static irqreturn_t bcm63xx_udc_data_isr(int irq, void *dev_id) +{ + struct iudma_ch *iudma = dev_id; + struct bcm63xx_udc *udc = iudma->udc; + struct bcm63xx_ep *bep; + struct usb_request *req = NULL; + struct bcm63xx_req *breq = NULL; + int rc; + bool is_done = false; + + spin_lock(&udc->lock); + + usb_dmac_writel(udc, ENETDMAC_IR_BUFDONE_MASK, + ENETDMAC_IR_REG, iudma->ch_idx); + bep = iudma->bep; + rc = iudma_read(udc, iudma); + + /* special handling for EP0 RX (0) and TX (1) */ + if (iudma->ch_idx == IUDMA_EP0_RXCHAN || + iudma->ch_idx == IUDMA_EP0_TXCHAN) { + req = udc->ep0_request; + breq = our_req(req); + + /* a single request could require multiple submissions */ + if (rc >= 0) { + req->actual += rc; + + if (req->actual >= req->length || breq->bd_bytes > rc) { + udc->ep0_req_completed = 1; + is_done = true; + schedule_work(&udc->ep0_wq); + + /* "actual" on a ZLP is 1 byte */ + req->actual = min(req->actual, req->length); + } else { + /* queue up the next BD (same request) */ + iudma_write(udc, iudma, breq); + } + } + } else if (!list_empty(&bep->queue)) { + breq = list_first_entry(&bep->queue, struct bcm63xx_req, queue); + req = &breq->req; + + if (rc >= 0) { + req->actual += rc; + + if (req->actual >= req->length || breq->bd_bytes > rc) { + is_done = true; + list_del(&breq->queue); + + req->actual = min(req->actual, req->length); + + if (!list_empty(&bep->queue)) { + struct bcm63xx_req *next; + + next = list_first_entry(&bep->queue, + struct bcm63xx_req, queue); + iudma_write(udc, iudma, next); + } + } else { + iudma_write(udc, iudma, breq); + } + } + } + spin_unlock(&udc->lock); + + if (is_done) { + usb_gadget_unmap_request(&udc->gadget, req, iudma->is_tx); + if (req->complete) + req->complete(&bep->ep, req); + } + + return IRQ_HANDLED; +} + +/*********************************************************************** + * Debug filesystem + ***********************************************************************/ + +/* + * bcm63xx_usbd_dbg_show - Show USBD controller state. + * @s: seq_file to which the information will be written. + * @p: Unused. + * + * This file nominally shows up as /sys/kernel/debug/bcm63xx_udc/usbd + */ +static int bcm63xx_usbd_dbg_show(struct seq_file *s, void *p) +{ + struct bcm63xx_udc *udc = s->private; + + if (!udc->driver) + return -ENODEV; + + seq_printf(s, "ep0 state: %s\n", + bcm63xx_ep0_state_names[udc->ep0state]); + seq_printf(s, " pending requests: %s%s%s%s%s%s%s\n", + udc->ep0_req_reset ? "reset " : "", + udc->ep0_req_set_cfg ? "set_cfg " : "", + udc->ep0_req_set_iface ? "set_iface " : "", + udc->ep0_req_shutdown ? "shutdown " : "", + udc->ep0_request ? "pending " : "", + udc->ep0_req_completed ? "completed " : "", + udc->ep0_reply ? "reply " : ""); + seq_printf(s, "cfg: %d; iface: %d; alt_iface: %d\n", + udc->cfg, udc->iface, udc->alt_iface); + seq_printf(s, "regs:\n"); + seq_printf(s, " control: %08x; straps: %08x; status: %08x\n", + usbd_readl(udc, USBD_CONTROL_REG), + usbd_readl(udc, USBD_STRAPS_REG), + usbd_readl(udc, USBD_STATUS_REG)); + seq_printf(s, " events: %08x; stall: %08x\n", + usbd_readl(udc, USBD_EVENTS_REG), + usbd_readl(udc, USBD_STALL_REG)); + + return 0; +} + +/* + * bcm63xx_iudma_dbg_show - Show IUDMA status and descriptors. + * @s: seq_file to which the information will be written. + * @p: Unused. + * + * This file nominally shows up as /sys/kernel/debug/bcm63xx_udc/iudma + */ +static int bcm63xx_iudma_dbg_show(struct seq_file *s, void *p) +{ + struct bcm63xx_udc *udc = s->private; + int ch_idx, i; + u32 sram2, sram3; + + if (!udc->driver) + return -ENODEV; + + for (ch_idx = 0; ch_idx < BCM63XX_NUM_IUDMA; ch_idx++) { + struct iudma_ch *iudma = &udc->iudma[ch_idx]; + struct list_head *pos; + + seq_printf(s, "IUDMA channel %d -- ", ch_idx); + switch (iudma_defaults[ch_idx].ep_type) { + case BCMEP_CTRL: + seq_printf(s, "control"); + break; + case BCMEP_BULK: + seq_printf(s, "bulk"); + break; + case BCMEP_INTR: + seq_printf(s, "interrupt"); + break; + } + seq_printf(s, ch_idx & 0x01 ? " tx" : " rx"); + seq_printf(s, " [ep%d]:\n", + max_t(int, iudma_defaults[ch_idx].ep_num, 0)); + seq_printf(s, " cfg: %08x; irqstat: %08x; irqmask: %08x; maxburst: %08x\n", + usb_dmac_readl(udc, ENETDMAC_CHANCFG_REG, ch_idx), + usb_dmac_readl(udc, ENETDMAC_IR_REG, ch_idx), + usb_dmac_readl(udc, ENETDMAC_IRMASK_REG, ch_idx), + usb_dmac_readl(udc, ENETDMAC_MAXBURST_REG, ch_idx)); + + sram2 = usb_dmas_readl(udc, ENETDMAS_SRAM2_REG, ch_idx); + sram3 = usb_dmas_readl(udc, ENETDMAS_SRAM3_REG, ch_idx); + seq_printf(s, " base: %08x; index: %04x_%04x; desc: %04x_%04x %08x\n", + usb_dmas_readl(udc, ENETDMAS_RSTART_REG, ch_idx), + sram2 >> 16, sram2 & 0xffff, + sram3 >> 16, sram3 & 0xffff, + usb_dmas_readl(udc, ENETDMAS_SRAM4_REG, ch_idx)); + seq_printf(s, " desc: %d/%d used", iudma->n_bds_used, + iudma->n_bds); + + if (iudma->bep) { + i = 0; + list_for_each(pos, &iudma->bep->queue) + i++; + seq_printf(s, "; %d queued\n", i); + } else { + seq_printf(s, "\n"); + } + + for (i = 0; i < iudma->n_bds; i++) { + struct bcm_enet_desc *d = &iudma->bd_ring[i]; + + seq_printf(s, " %03x (%02x): len_stat: %04x_%04x; pa %08x", + i * sizeof(*d), i, + d->len_stat >> 16, d->len_stat & 0xffff, + d->address); + if (d == iudma->read_bd) + seq_printf(s, " <<RD"); + if (d == iudma->write_bd) + seq_printf(s, " <<WR"); + seq_printf(s, "\n"); + } + + seq_printf(s, "\n"); + } + + return 0; +} + +static int bcm63xx_usbd_dbg_open(struct inode *inode, struct file *file) +{ + return single_open(file, bcm63xx_usbd_dbg_show, inode->i_private); +} + +static int bcm63xx_iudma_dbg_open(struct inode *inode, struct file *file) +{ + return single_open(file, bcm63xx_iudma_dbg_show, inode->i_private); +} + +static const struct file_operations usbd_dbg_fops = { + .owner = THIS_MODULE, + .open = bcm63xx_usbd_dbg_open, + .llseek = seq_lseek, + .read = seq_read, + .release = single_release, +}; + +static const struct file_operations iudma_dbg_fops = { + .owner = THIS_MODULE, + .open = bcm63xx_iudma_dbg_open, + .llseek = seq_lseek, + .read = seq_read, + .release = single_release, +}; + + +/** + * bcm63xx_udc_init_debugfs - Create debugfs entries. + * @udc: Reference to the device controller. + */ +static void bcm63xx_udc_init_debugfs(struct bcm63xx_udc *udc) +{ + struct dentry *root, *usbd, *iudma; + + if (!IS_ENABLED(CONFIG_USB_GADGET_DEBUG_FS)) + return; + + root = debugfs_create_dir(udc->gadget.name, NULL); + if (IS_ERR(root) || !root) + goto err_root; + + usbd = debugfs_create_file("usbd", 0400, root, udc, + &usbd_dbg_fops); + if (!usbd) + goto err_usbd; + iudma = debugfs_create_file("iudma", 0400, root, udc, + &iudma_dbg_fops); + if (!iudma) + goto err_iudma; + + udc->debugfs_root = root; + udc->debugfs_usbd = usbd; + udc->debugfs_iudma = iudma; + return; +err_iudma: + debugfs_remove(usbd); +err_usbd: + debugfs_remove(root); +err_root: + dev_err(udc->dev, "debugfs is not available\n"); +} + +/** + * bcm63xx_udc_cleanup_debugfs - Remove debugfs entries. + * @udc: Reference to the device controller. + * + * debugfs_remove() is safe to call with a NULL argument. + */ +static void bcm63xx_udc_cleanup_debugfs(struct bcm63xx_udc *udc) +{ + debugfs_remove(udc->debugfs_iudma); + debugfs_remove(udc->debugfs_usbd); + debugfs_remove(udc->debugfs_root); + udc->debugfs_iudma = NULL; + udc->debugfs_usbd = NULL; + udc->debugfs_root = NULL; +} + +/*********************************************************************** + * Driver init/exit + ***********************************************************************/ + +/** + * bcm63xx_udc_probe - Initialize a new instance of the UDC. + * @pdev: Platform device struct from the bcm63xx BSP code. + * + * Note that platform data is required, because pd.port_no varies from chip + * to chip and is used to switch the correct USB port to device mode. + */ +static int bcm63xx_udc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct bcm63xx_usbd_platform_data *pd = dev_get_platdata(dev); + struct bcm63xx_udc *udc; + struct resource *res; + int rc = -ENOMEM, i, irq; + + udc = devm_kzalloc(dev, sizeof(*udc), GFP_KERNEL); + if (!udc) { + dev_err(dev, "cannot allocate memory\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, udc); + udc->dev = dev; + udc->pd = pd; + + if (!pd) { + dev_err(dev, "missing platform data\n"); + return -EINVAL; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + udc->usbd_regs = devm_ioremap_resource(dev, res); + if (IS_ERR(udc->usbd_regs)) + return PTR_ERR(udc->usbd_regs); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + udc->iudma_regs = devm_ioremap_resource(dev, res); + if (IS_ERR(udc->iudma_regs)) + return PTR_ERR(udc->iudma_regs); + + spin_lock_init(&udc->lock); + INIT_WORK(&udc->ep0_wq, bcm63xx_ep0_process); + + udc->gadget.ops = &bcm63xx_udc_ops; + udc->gadget.name = dev_name(dev); + + if (!pd->use_fullspeed && !use_fullspeed) + udc->gadget.max_speed = USB_SPEED_HIGH; + else + udc->gadget.max_speed = USB_SPEED_FULL; + + /* request clocks, allocate buffers, and clear any pending IRQs */ + rc = bcm63xx_init_udc_hw(udc); + if (rc) + return rc; + + rc = -ENXIO; + + /* IRQ resource #0: control interrupt (VBUS, speed, etc.) */ + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "missing IRQ resource #0\n"); + goto out_uninit; + } + if (devm_request_irq(dev, irq, &bcm63xx_udc_ctrl_isr, 0, + dev_name(dev), udc) < 0) { + dev_err(dev, "error requesting IRQ #%d\n", irq); + goto out_uninit; + } + + /* IRQ resources #1-6: data interrupts for IUDMA channels 0-5 */ + for (i = 0; i < BCM63XX_NUM_IUDMA; i++) { + irq = platform_get_irq(pdev, i + 1); + if (irq < 0) { + dev_err(dev, "missing IRQ resource #%d\n", i + 1); + goto out_uninit; + } + if (devm_request_irq(dev, irq, &bcm63xx_udc_data_isr, 0, + dev_name(dev), &udc->iudma[i]) < 0) { + dev_err(dev, "error requesting IRQ #%d\n", irq); + goto out_uninit; + } + } + + bcm63xx_udc_init_debugfs(udc); + rc = usb_add_gadget_udc(dev, &udc->gadget); + if (!rc) + return 0; + + bcm63xx_udc_cleanup_debugfs(udc); +out_uninit: + bcm63xx_uninit_udc_hw(udc); + return rc; +} + +/** + * bcm63xx_udc_remove - Remove the device from the system. + * @pdev: Platform device struct from the bcm63xx BSP code. + */ +static int bcm63xx_udc_remove(struct platform_device *pdev) +{ + struct bcm63xx_udc *udc = platform_get_drvdata(pdev); + + bcm63xx_udc_cleanup_debugfs(udc); + usb_del_gadget_udc(&udc->gadget); + BUG_ON(udc->driver); + + bcm63xx_uninit_udc_hw(udc); + + return 0; +} + +static struct platform_driver bcm63xx_udc_driver = { + .probe = bcm63xx_udc_probe, + .remove = bcm63xx_udc_remove, + .driver = { + .name = DRV_MODULE_NAME, + .owner = THIS_MODULE, + }, +}; +module_platform_driver(bcm63xx_udc_driver); + +MODULE_DESCRIPTION("BCM63xx USB Peripheral Controller"); +MODULE_AUTHOR("Kevin Cernekee <cernekee@gmail.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_MODULE_NAME); diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 725550f06fa..e126b6b248e 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -11,11 +11,11 @@ */ #include <linux/kernel.h> -#include <linux/utsname.h> #include <linux/module.h> #include "u_ether.h" #include "u_serial.h" +#include "u_ecm.h" #define DRIVER_DESC "CDC Composite Gadget" @@ -33,24 +33,9 @@ #define CDC_VENDOR_NUM 0x0525 /* NetChip */ #define CDC_PRODUCT_NUM 0xa4aa /* CDC Composite: ECM + ACM */ -/*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ +USB_GADGET_COMPOSITE_OPTIONS(); -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" -#include "u_serial.c" -#include "f_acm.c" -#include "f_ecm.c" -#include "u_ether.c" +USB_ETHERNET_MODULE_PARAMETERS(); /*-------------------------------------------------------------------------*/ @@ -92,15 +77,10 @@ static const struct usb_descriptor_header *otg_desc[] = { /* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 - -static char manufacturer[50]; - static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", { } /* end of list */ }; @@ -114,9 +94,12 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; -static u8 hostaddr[ETH_ALEN]; - /*-------------------------------------------------------------------------*/ +static struct usb_function *f_acm; +static struct usb_function_instance *fi_serial; + +static struct usb_function *f_ecm; +static struct usb_function_instance *fi_ecm; /* * We _always_ have both CDC ECM and CDC ACM functions. @@ -130,15 +113,35 @@ static int __init cdc_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - status = ecm_bind_config(c, hostaddr); - if (status < 0) - return status; + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) { + status = PTR_ERR(f_ecm); + goto err_get_ecm; + } - status = acm_bind_config(c, 0); - if (status < 0) - return status; + status = usb_add_function(c, f_ecm); + if (status) + goto err_add_ecm; + f_acm = usb_get_function(fi_serial); + if (IS_ERR(f_acm)) { + status = PTR_ERR(f_acm); + goto err_get_acm; + } + + status = usb_add_function(c, f_acm); + if (status) + goto err_add_acm; return 0; + +err_add_acm: + usb_put_function(f_acm); +err_get_acm: + usb_remove_function(c, f_ecm); +err_add_ecm: + usb_put_function(f_ecm); +err_get_ecm: + return status; } static struct usb_configuration cdc_config_driver = { @@ -152,8 +155,8 @@ static struct usb_configuration cdc_config_driver = { static int __init cdc_bind(struct usb_composite_dev *cdev) { - int gcnum; struct usb_gadget *gadget = cdev->gadget; + struct f_ecm_opts *ecm_opts; int status; if (!can_support_ecm(cdev->gadget)) { @@ -162,81 +165,69 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) return -EINVAL; } - /* set up network link layer */ - status = gether_setup(cdev->gadget, hostaddr); - if (status < 0) - return status; + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); - /* set up serial link layer */ - status = gserial_setup(cdev->gadget, 1); - if (status < 0) - goto fail0; - - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - else { - /* We assume that can_support_ecm() tells the truth; - * but if the controller isn't recognized at all then - * that assumption is a bit more likely to be wrong. - */ - WARNING(cdev, "controller '%s' not recognized; trying %s\n", - gadget->name, - cdc_config_driver.label); - device_desc.bcdDevice = - cpu_to_le16(0x0300 | 0x0099); - } + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + + gether_set_qmult(ecm_opts->net, qmult); + if (!gether_set_host_addr(ecm_opts->net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(ecm_opts->net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); + fi_serial = usb_get_function_instance("acm"); + if (IS_ERR(fi_serial)) { + status = PTR_ERR(fi_serial); + goto fail; + } /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - /* device descriptor strings: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - status = usb_string_id(cdev); - if (status < 0) - goto fail1; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) goto fail1; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; /* register our configuration */ status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config); if (status < 0) goto fail1; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", DRIVER_DESC); return 0; fail1: - gserial_cleanup(); -fail0: - gether_cleanup(); + usb_put_function_instance(fi_serial); +fail: + usb_put_function_instance(fi_ecm); return status; } static int __exit cdc_unbind(struct usb_composite_dev *cdev) { - gserial_cleanup(); - gether_cleanup(); + usb_put_function(f_acm); + usb_put_function_instance(fi_serial); + if (!IS_ERR_OR_NULL(f_ecm)) + usb_put_function(f_ecm); + if (!IS_ERR_OR_NULL(fi_ecm)) + usb_put_function_instance(fi_ecm); return 0; } -static struct usb_composite_driver cdc_driver = { +static __refdata struct usb_composite_driver cdc_driver = { .name = "g_cdc", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = cdc_bind, .unbind = __exit_p(cdc_unbind), }; @@ -246,7 +237,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_probe(&cdc_driver, cdc_bind); + return usb_composite_probe(&cdc_driver); } module_init(init); diff --git a/drivers/usb/gadget/ci13xxx_msm.c b/drivers/usb/gadget/ci13xxx_msm.c deleted file mode 100644 index 1fc612914c5..00000000000 --- a/drivers/usb/gadget/ci13xxx_msm.c +++ /dev/null @@ -1,126 +0,0 @@ -/* Copyright (c) 2010, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/usb/msm_hsusb_hw.h> -#include <linux/usb/ulpi.h> - -#include "ci13xxx_udc.c" - -#define MSM_USB_BASE (udc->regs) - -static irqreturn_t msm_udc_irq(int irq, void *data) -{ - return udc_irq(); -} - -static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event) -{ - struct device *dev = udc->gadget.dev.parent; - int val; - - switch (event) { - case CI13XXX_CONTROLLER_RESET_EVENT: - dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n"); - writel(0, USB_AHBBURST); - writel(0, USB_AHBMODE); - break; - case CI13XXX_CONTROLLER_STOPPED_EVENT: - dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n"); - /* - * Put the transceiver in non-driving mode. Otherwise host - * may not detect soft-disconnection. - */ - val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL); - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL); - break; - default: - dev_dbg(dev, "unknown ci13xxx_udc event\n"); - break; - } -} - -static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = { - .name = "ci13xxx_msm", - .flags = CI13XXX_REGS_SHARED | - CI13XXX_REQUIRE_TRANSCEIVER | - CI13XXX_PULLUP_ON_VBUS | - CI13XXX_DISABLE_STREAMING, - - .notify_event = ci13xxx_msm_notify_event, -}; - -static int ci13xxx_msm_probe(struct platform_device *pdev) -{ - struct resource *res; - void __iomem *regs; - int irq; - int ret; - - dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n"); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "failed to get platform resource mem\n"); - return -ENXIO; - } - - regs = ioremap(res->start, resource_size(res)); - if (!regs) { - dev_err(&pdev->dev, "ioremap failed\n"); - return -ENOMEM; - } - - ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs); - if (ret < 0) { - dev_err(&pdev->dev, "udc_probe failed\n"); - goto iounmap; - } - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "IRQ not found\n"); - ret = -ENXIO; - goto udc_remove; - } - - ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev); - if (ret < 0) { - dev_err(&pdev->dev, "request_irq failed\n"); - goto udc_remove; - } - - pm_runtime_no_callbacks(&pdev->dev); - pm_runtime_enable(&pdev->dev); - - return 0; - -udc_remove: - udc_remove(); -iounmap: - iounmap(regs); - - return ret; -} - -static struct platform_driver ci13xxx_msm_driver = { - .probe = ci13xxx_msm_probe, - .driver = { .name = "msm_hsusb", }, -}; -MODULE_ALIAS("platform:msm_hsusb"); - -static int __init ci13xxx_msm_init(void) -{ - return platform_driver_register(&ci13xxx_msm_driver); -} -module_init(ci13xxx_msm_init); - -MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/gadget/ci13xxx_pci.c b/drivers/usb/gadget/ci13xxx_pci.c deleted file mode 100644 index 883ab5e832d..00000000000 --- a/drivers/usb/gadget/ci13xxx_pci.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * ci13xxx_pci.c - MIPS USB IP core family device controller - * - * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. - * - * Author: David Lopo - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/pci.h> - -#include "ci13xxx_udc.c" - -/* driver name */ -#define UDC_DRIVER_NAME "ci13xxx_pci" - -/****************************************************************************** - * PCI block - *****************************************************************************/ -/** - * ci13xxx_pci_irq: interrut handler - * @irq: irq number - * @pdev: USB Device Controller interrupt source - * - * This function returns IRQ_HANDLED if the IRQ has been handled - * This is an ISR don't trace, use attribute interface instead - */ -static irqreturn_t ci13xxx_pci_irq(int irq, void *pdev) -{ - if (irq == 0) { - dev_err(&((struct pci_dev *)pdev)->dev, "Invalid IRQ0 usage!"); - return IRQ_HANDLED; - } - return udc_irq(); -} - -static struct ci13xxx_udc_driver ci13xxx_pci_udc_driver = { - .name = UDC_DRIVER_NAME, -}; - -/** - * ci13xxx_pci_probe: PCI probe - * @pdev: USB device controller being probed - * @id: PCI hotplug ID connecting controller to UDC framework - * - * This function returns an error code - * Allocates basic PCI resources for this USB device controller, and then - * invokes the udc_probe() method to start the UDC associated with it - */ -static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - void __iomem *regs = NULL; - int retval = 0; - - if (id == NULL) - return -EINVAL; - - retval = pci_enable_device(pdev); - if (retval) - goto done; - - if (!pdev->irq) { - dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); - retval = -ENODEV; - goto disable_device; - } - - retval = pci_request_regions(pdev, UDC_DRIVER_NAME); - if (retval) - goto disable_device; - - /* BAR 0 holds all the registers */ - regs = pci_iomap(pdev, 0, 0); - if (!regs) { - dev_err(&pdev->dev, "Error mapping memory!"); - retval = -EFAULT; - goto release_regions; - } - pci_set_drvdata(pdev, (__force void *)regs); - - pci_set_master(pdev); - pci_try_set_mwi(pdev); - - retval = udc_probe(&ci13xxx_pci_udc_driver, &pdev->dev, regs); - if (retval) - goto iounmap; - - /* our device does not have MSI capability */ - - retval = request_irq(pdev->irq, ci13xxx_pci_irq, IRQF_SHARED, - UDC_DRIVER_NAME, pdev); - if (retval) - goto gadget_remove; - - return 0; - - gadget_remove: - udc_remove(); - iounmap: - pci_iounmap(pdev, regs); - release_regions: - pci_release_regions(pdev); - disable_device: - pci_disable_device(pdev); - done: - return retval; -} - -/** - * ci13xxx_pci_remove: PCI remove - * @pdev: USB Device Controller being removed - * - * Reverses the effect of ci13xxx_pci_probe(), - * first invoking the udc_remove() and then releases - * all PCI resources allocated for this USB device controller - */ -static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) -{ - free_irq(pdev->irq, pdev); - udc_remove(); - pci_iounmap(pdev, (__force void __iomem *)pci_get_drvdata(pdev)); - pci_release_regions(pdev); - pci_disable_device(pdev); -} - -/** - * PCI device table - * PCI device structure - * - * Check "pci.h" for details - */ -static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { - { PCI_DEVICE(0x153F, 0x1004) }, - { PCI_DEVICE(0x153F, 0x1006) }, - { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } -}; -MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table); - -static struct pci_driver ci13xxx_pci_driver = { - .name = UDC_DRIVER_NAME, - .id_table = ci13xxx_pci_id_table, - .probe = ci13xxx_pci_probe, - .remove = __devexit_p(ci13xxx_pci_remove), -}; - -/** - * ci13xxx_pci_init: module init - * - * Driver load - */ -static int __init ci13xxx_pci_init(void) -{ - return pci_register_driver(&ci13xxx_pci_driver); -} -module_init(ci13xxx_pci_init); - -/** - * ci13xxx_pci_exit: module exit - * - * Driver unload - */ -static void __exit ci13xxx_pci_exit(void) -{ - pci_unregister_driver(&ci13xxx_pci_driver); -} -module_exit(ci13xxx_pci_exit); - -MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); -MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); -MODULE_LICENSE("GPL"); -MODULE_VERSION("June 2008"); diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c deleted file mode 100644 index 27e31371842..00000000000 --- a/drivers/usb/gadget/ci13xxx_udc.c +++ /dev/null @@ -1,2994 +0,0 @@ -/* - * ci13xxx_udc.c - MIPS USB IP core family device controller - * - * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. - * - * Author: David Lopo - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* - * Description: MIPS USB IP core family device controller - * Currently it only supports IP part number CI13412 - * - * This driver is composed of several blocks: - * - HW: hardware interface - * - DBG: debug facilities (optional) - * - UTIL: utilities - * - ISR: interrupts handling - * - ENDPT: endpoint operations (Gadget API) - * - GADGET: gadget operations (Gadget API) - * - BUS: bus glue code, bus abstraction layer - * - * Compile Options - * - CONFIG_USB_GADGET_DEBUG_FILES: enable debug facilities - * - STALL_IN: non-empty bulk-in pipes cannot be halted - * if defined mass storage compliance succeeds but with warnings - * => case 4: Hi > Dn - * => case 5: Hi > Di - * => case 8: Hi <> Do - * if undefined usbtest 13 fails - * - TRACE: enable function tracing (depends on DEBUG) - * - * Main Features - * - Chapter 9 & Mass Storage Compliance with Gadget File Storage - * - Chapter 9 Compliance with Gadget Zero (STALL_IN undefined) - * - Normal & LPM support - * - * USBTEST Report - * - OK: 0-12, 13 (STALL_IN defined) & 14 - * - Not Supported: 15 & 16 (ISO) - * - * TODO List - * - OTG - * - Isochronous & Interrupt Traffic - * - Handle requests which spawns into several TDs - * - GET_STATUS(device) - always reports 0 - * - Gadget API (majority of optional features) - * - Suspend & Remote Wakeup - */ -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/dmapool.h> -#include <linux/dma-mapping.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/pm_runtime.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/usb/otg.h> - -#include "ci13xxx_udc.h" - - -/****************************************************************************** - * DEFINE - *****************************************************************************/ - -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - -/* ctrl register bank access */ -static DEFINE_SPINLOCK(udc_lock); - -/* control endpoint description */ -static const struct usb_endpoint_descriptor -ctrl_endpt_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - .wMaxPacketSize = cpu_to_le16(CTRL_PAYLOAD_MAX), -}; - -static const struct usb_endpoint_descriptor -ctrl_endpt_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - .wMaxPacketSize = cpu_to_le16(CTRL_PAYLOAD_MAX), -}; - -/* UDC descriptor */ -static struct ci13xxx *_udc; - -/* Interrupt statistics */ -#define ISR_MASK 0x1F -static struct { - u32 test; - u32 ui; - u32 uei; - u32 pci; - u32 uri; - u32 sli; - u32 none; - struct { - u32 cnt; - u32 buf[ISR_MASK+1]; - u32 idx; - } hndl; -} isr_statistics; - -/** - * ffs_nr: find first (least significant) bit set - * @x: the word to search - * - * This function returns bit number (instead of position) - */ -static int ffs_nr(u32 x) -{ - int n = ffs(x); - - return n ? n-1 : 32; -} - -/****************************************************************************** - * HW block - *****************************************************************************/ -/* register bank descriptor */ -static struct { - unsigned lpm; /* is LPM? */ - void __iomem *abs; /* bus map offset */ - void __iomem *cap; /* bus map offset + CAP offset + CAP data */ - size_t size; /* bank size */ -} hw_bank; - -/* MSM specific */ -#define ABS_AHBBURST (0x0090UL) -#define ABS_AHBMODE (0x0098UL) -/* UDC register map */ -#define ABS_CAPLENGTH (0x100UL) -#define ABS_HCCPARAMS (0x108UL) -#define ABS_DCCPARAMS (0x124UL) -#define ABS_TESTMODE (hw_bank.lpm ? 0x0FCUL : 0x138UL) -/* offset to CAPLENTGH (addr + data) */ -#define CAP_USBCMD (0x000UL) -#define CAP_USBSTS (0x004UL) -#define CAP_USBINTR (0x008UL) -#define CAP_DEVICEADDR (0x014UL) -#define CAP_ENDPTLISTADDR (0x018UL) -#define CAP_PORTSC (0x044UL) -#define CAP_DEVLC (0x084UL) -#define CAP_USBMODE (hw_bank.lpm ? 0x0C8UL : 0x068UL) -#define CAP_ENDPTSETUPSTAT (hw_bank.lpm ? 0x0D8UL : 0x06CUL) -#define CAP_ENDPTPRIME (hw_bank.lpm ? 0x0DCUL : 0x070UL) -#define CAP_ENDPTFLUSH (hw_bank.lpm ? 0x0E0UL : 0x074UL) -#define CAP_ENDPTSTAT (hw_bank.lpm ? 0x0E4UL : 0x078UL) -#define CAP_ENDPTCOMPLETE (hw_bank.lpm ? 0x0E8UL : 0x07CUL) -#define CAP_ENDPTCTRL (hw_bank.lpm ? 0x0ECUL : 0x080UL) -#define CAP_LAST (hw_bank.lpm ? 0x12CUL : 0x0C0UL) - -/* maximum number of enpoints: valid only after hw_device_reset() */ -static unsigned hw_ep_max; - -/** - * hw_ep_bit: calculates the bit number - * @num: endpoint number - * @dir: endpoint direction - * - * This function returns bit number - */ -static inline int hw_ep_bit(int num, int dir) -{ - return num + (dir ? 16 : 0); -} - -static int ep_to_bit(int n) -{ - int fill = 16 - hw_ep_max / 2; - - if (n >= hw_ep_max / 2) - n += fill; - - return n; -} - -/** - * hw_aread: reads from register bitfield - * @addr: address relative to bus map - * @mask: bitfield mask - * - * This function returns register bitfield data - */ -static u32 hw_aread(u32 addr, u32 mask) -{ - return ioread32(addr + hw_bank.abs) & mask; -} - -/** - * hw_awrite: writes to register bitfield - * @addr: address relative to bus map - * @mask: bitfield mask - * @data: new data - */ -static void hw_awrite(u32 addr, u32 mask, u32 data) -{ - iowrite32(hw_aread(addr, ~mask) | (data & mask), - addr + hw_bank.abs); -} - -/** - * hw_cread: reads from register bitfield - * @addr: address relative to CAP offset plus content - * @mask: bitfield mask - * - * This function returns register bitfield data - */ -static u32 hw_cread(u32 addr, u32 mask) -{ - return ioread32(addr + hw_bank.cap) & mask; -} - -/** - * hw_cwrite: writes to register bitfield - * @addr: address relative to CAP offset plus content - * @mask: bitfield mask - * @data: new data - */ -static void hw_cwrite(u32 addr, u32 mask, u32 data) -{ - iowrite32(hw_cread(addr, ~mask) | (data & mask), - addr + hw_bank.cap); -} - -/** - * hw_ctest_and_clear: tests & clears register bitfield - * @addr: address relative to CAP offset plus content - * @mask: bitfield mask - * - * This function returns register bitfield data - */ -static u32 hw_ctest_and_clear(u32 addr, u32 mask) -{ - u32 reg = hw_cread(addr, mask); - - iowrite32(reg, addr + hw_bank.cap); - return reg; -} - -/** - * hw_ctest_and_write: tests & writes register bitfield - * @addr: address relative to CAP offset plus content - * @mask: bitfield mask - * @data: new data - * - * This function returns register bitfield data - */ -static u32 hw_ctest_and_write(u32 addr, u32 mask, u32 data) -{ - u32 reg = hw_cread(addr, ~0); - - iowrite32((reg & ~mask) | (data & mask), addr + hw_bank.cap); - return (reg & mask) >> ffs_nr(mask); -} - -static int hw_device_init(void __iomem *base) -{ - u32 reg; - - /* bank is a module variable */ - hw_bank.abs = base; - - hw_bank.cap = hw_bank.abs; - hw_bank.cap += ABS_CAPLENGTH; - hw_bank.cap += ioread8(hw_bank.cap); - - reg = hw_aread(ABS_HCCPARAMS, HCCPARAMS_LEN) >> ffs_nr(HCCPARAMS_LEN); - hw_bank.lpm = reg; - hw_bank.size = hw_bank.cap - hw_bank.abs; - hw_bank.size += CAP_LAST; - hw_bank.size /= sizeof(u32); - - reg = hw_aread(ABS_DCCPARAMS, DCCPARAMS_DEN) >> ffs_nr(DCCPARAMS_DEN); - hw_ep_max = reg * 2; /* cache hw ENDPT_MAX */ - - if (hw_ep_max == 0 || hw_ep_max > ENDPT_MAX) - return -ENODEV; - - /* setup lock mode ? */ - - /* ENDPTSETUPSTAT is '0' by default */ - - /* HCSPARAMS.bf.ppc SHOULD BE zero for device */ - - return 0; -} -/** - * hw_device_reset: resets chip (execute without interruption) - * @base: register base address - * - * This function returns an error code - */ -static int hw_device_reset(struct ci13xxx *udc) -{ - /* should flush & stop before reset */ - hw_cwrite(CAP_ENDPTFLUSH, ~0, ~0); - hw_cwrite(CAP_USBCMD, USBCMD_RS, 0); - - hw_cwrite(CAP_USBCMD, USBCMD_RST, USBCMD_RST); - while (hw_cread(CAP_USBCMD, USBCMD_RST)) - udelay(10); /* not RTOS friendly */ - - - if (udc->udc_driver->notify_event) - udc->udc_driver->notify_event(udc, - CI13XXX_CONTROLLER_RESET_EVENT); - - if (udc->udc_driver->flags & CI13XXX_DISABLE_STREAMING) - hw_cwrite(CAP_USBMODE, USBMODE_SDIS, USBMODE_SDIS); - - /* USBMODE should be configured step by step */ - hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE); - hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE); - hw_cwrite(CAP_USBMODE, USBMODE_SLOM, USBMODE_SLOM); /* HW >= 2.3 */ - - if (hw_cread(CAP_USBMODE, USBMODE_CM) != USBMODE_CM_DEVICE) { - pr_err("cannot enter in device mode"); - pr_err("lpm = %i", hw_bank.lpm); - return -ENODEV; - } - - return 0; -} - -/** - * hw_device_state: enables/disables interrupts & starts/stops device (execute - * without interruption) - * @dma: 0 => disable, !0 => enable and set dma engine - * - * This function returns an error code - */ -static int hw_device_state(u32 dma) -{ - if (dma) { - hw_cwrite(CAP_ENDPTLISTADDR, ~0, dma); - /* interrupt, error, port change, reset, sleep/suspend */ - hw_cwrite(CAP_USBINTR, ~0, - USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI); - hw_cwrite(CAP_USBCMD, USBCMD_RS, USBCMD_RS); - } else { - hw_cwrite(CAP_USBCMD, USBCMD_RS, 0); - hw_cwrite(CAP_USBINTR, ~0, 0); - } - return 0; -} - -/** - * hw_ep_flush: flush endpoint fifo (execute without interruption) - * @num: endpoint number - * @dir: endpoint direction - * - * This function returns an error code - */ -static int hw_ep_flush(int num, int dir) -{ - int n = hw_ep_bit(num, dir); - - do { - /* flush any pending transfer */ - hw_cwrite(CAP_ENDPTFLUSH, BIT(n), BIT(n)); - while (hw_cread(CAP_ENDPTFLUSH, BIT(n))) - cpu_relax(); - } while (hw_cread(CAP_ENDPTSTAT, BIT(n))); - - return 0; -} - -/** - * hw_ep_disable: disables endpoint (execute without interruption) - * @num: endpoint number - * @dir: endpoint direction - * - * This function returns an error code - */ -static int hw_ep_disable(int num, int dir) -{ - hw_ep_flush(num, dir); - hw_cwrite(CAP_ENDPTCTRL + num * sizeof(u32), - dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0); - return 0; -} - -/** - * hw_ep_enable: enables endpoint (execute without interruption) - * @num: endpoint number - * @dir: endpoint direction - * @type: endpoint type - * - * This function returns an error code - */ -static int hw_ep_enable(int num, int dir, int type) -{ - u32 mask, data; - - if (dir) { - mask = ENDPTCTRL_TXT; /* type */ - data = type << ffs_nr(mask); - - mask |= ENDPTCTRL_TXS; /* unstall */ - mask |= ENDPTCTRL_TXR; /* reset data toggle */ - data |= ENDPTCTRL_TXR; - mask |= ENDPTCTRL_TXE; /* enable */ - data |= ENDPTCTRL_TXE; - } else { - mask = ENDPTCTRL_RXT; /* type */ - data = type << ffs_nr(mask); - - mask |= ENDPTCTRL_RXS; /* unstall */ - mask |= ENDPTCTRL_RXR; /* reset data toggle */ - data |= ENDPTCTRL_RXR; - mask |= ENDPTCTRL_RXE; /* enable */ - data |= ENDPTCTRL_RXE; - } - hw_cwrite(CAP_ENDPTCTRL + num * sizeof(u32), mask, data); - return 0; -} - -/** - * hw_ep_get_halt: return endpoint halt status - * @num: endpoint number - * @dir: endpoint direction - * - * This function returns 1 if endpoint halted - */ -static int hw_ep_get_halt(int num, int dir) -{ - u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; - - return hw_cread(CAP_ENDPTCTRL + num * sizeof(u32), mask) ? 1 : 0; -} - -/** - * hw_test_and_clear_setup_status: test & clear setup status (execute without - * interruption) - * @n: endpoint number - * - * This function returns setup status - */ -static int hw_test_and_clear_setup_status(int n) -{ - n = ep_to_bit(n); - return hw_ctest_and_clear(CAP_ENDPTSETUPSTAT, BIT(n)); -} - -/** - * hw_ep_prime: primes endpoint (execute without interruption) - * @num: endpoint number - * @dir: endpoint direction - * @is_ctrl: true if control endpoint - * - * This function returns an error code - */ -static int hw_ep_prime(int num, int dir, int is_ctrl) -{ - int n = hw_ep_bit(num, dir); - - if (is_ctrl && dir == RX && hw_cread(CAP_ENDPTSETUPSTAT, BIT(num))) - return -EAGAIN; - - hw_cwrite(CAP_ENDPTPRIME, BIT(n), BIT(n)); - - while (hw_cread(CAP_ENDPTPRIME, BIT(n))) - cpu_relax(); - if (is_ctrl && dir == RX && hw_cread(CAP_ENDPTSETUPSTAT, BIT(num))) - return -EAGAIN; - - /* status shoult be tested according with manual but it doesn't work */ - return 0; -} - -/** - * hw_ep_set_halt: configures ep halt & resets data toggle after clear (execute - * without interruption) - * @num: endpoint number - * @dir: endpoint direction - * @value: true => stall, false => unstall - * - * This function returns an error code - */ -static int hw_ep_set_halt(int num, int dir, int value) -{ - if (value != 0 && value != 1) - return -EINVAL; - - do { - u32 addr = CAP_ENDPTCTRL + num * sizeof(u32); - u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; - u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR; - - /* data toggle - reserved for EP0 but it's in ESS */ - hw_cwrite(addr, mask_xs|mask_xr, value ? mask_xs : mask_xr); - - } while (value != hw_ep_get_halt(num, dir)); - - return 0; -} - -/** - * hw_intr_clear: disables interrupt & clears interrupt status (execute without - * interruption) - * @n: interrupt bit - * - * This function returns an error code - */ -static int hw_intr_clear(int n) -{ - if (n >= REG_BITS) - return -EINVAL; - - hw_cwrite(CAP_USBINTR, BIT(n), 0); - hw_cwrite(CAP_USBSTS, BIT(n), BIT(n)); - return 0; -} - -/** - * hw_intr_force: enables interrupt & forces interrupt status (execute without - * interruption) - * @n: interrupt bit - * - * This function returns an error code - */ -static int hw_intr_force(int n) -{ - if (n >= REG_BITS) - return -EINVAL; - - hw_awrite(ABS_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE); - hw_cwrite(CAP_USBINTR, BIT(n), BIT(n)); - hw_cwrite(CAP_USBSTS, BIT(n), BIT(n)); - hw_awrite(ABS_TESTMODE, TESTMODE_FORCE, 0); - return 0; -} - -/** - * hw_is_port_high_speed: test if port is high speed - * - * This function returns true if high speed port - */ -static int hw_port_is_high_speed(void) -{ - return hw_bank.lpm ? hw_cread(CAP_DEVLC, DEVLC_PSPD) : - hw_cread(CAP_PORTSC, PORTSC_HSP); -} - -/** - * hw_port_test_get: reads port test mode value - * - * This function returns port test mode value - */ -static u8 hw_port_test_get(void) -{ - return hw_cread(CAP_PORTSC, PORTSC_PTC) >> ffs_nr(PORTSC_PTC); -} - -/** - * hw_port_test_set: writes port test mode (execute without interruption) - * @mode: new value - * - * This function returns an error code - */ -static int hw_port_test_set(u8 mode) -{ - const u8 TEST_MODE_MAX = 7; - - if (mode > TEST_MODE_MAX) - return -EINVAL; - - hw_cwrite(CAP_PORTSC, PORTSC_PTC, mode << ffs_nr(PORTSC_PTC)); - return 0; -} - -/** - * hw_read_intr_enable: returns interrupt enable register - * - * This function returns register data - */ -static u32 hw_read_intr_enable(void) -{ - return hw_cread(CAP_USBINTR, ~0); -} - -/** - * hw_read_intr_status: returns interrupt status register - * - * This function returns register data - */ -static u32 hw_read_intr_status(void) -{ - return hw_cread(CAP_USBSTS, ~0); -} - -/** - * hw_register_read: reads all device registers (execute without interruption) - * @buf: destination buffer - * @size: buffer size - * - * This function returns number of registers read - */ -static size_t hw_register_read(u32 *buf, size_t size) -{ - unsigned i; - - if (size > hw_bank.size) - size = hw_bank.size; - - for (i = 0; i < size; i++) - buf[i] = hw_aread(i * sizeof(u32), ~0); - - return size; -} - -/** - * hw_register_write: writes to register - * @addr: register address - * @data: register value - * - * This function returns an error code - */ -static int hw_register_write(u16 addr, u32 data) -{ - /* align */ - addr /= sizeof(u32); - - if (addr >= hw_bank.size) - return -EINVAL; - - /* align */ - addr *= sizeof(u32); - - hw_awrite(addr, ~0, data); - return 0; -} - -/** - * hw_test_and_clear_complete: test & clear complete status (execute without - * interruption) - * @n: endpoint number - * - * This function returns complete status - */ -static int hw_test_and_clear_complete(int n) -{ - n = ep_to_bit(n); - return hw_ctest_and_clear(CAP_ENDPTCOMPLETE, BIT(n)); -} - -/** - * hw_test_and_clear_intr_active: test & clear active interrupts (execute - * without interruption) - * - * This function returns active interrutps - */ -static u32 hw_test_and_clear_intr_active(void) -{ - u32 reg = hw_read_intr_status() & hw_read_intr_enable(); - - hw_cwrite(CAP_USBSTS, ~0, reg); - return reg; -} - -/** - * hw_test_and_clear_setup_guard: test & clear setup guard (execute without - * interruption) - * - * This function returns guard value - */ -static int hw_test_and_clear_setup_guard(void) -{ - return hw_ctest_and_write(CAP_USBCMD, USBCMD_SUTW, 0); -} - -/** - * hw_test_and_set_setup_guard: test & set setup guard (execute without - * interruption) - * - * This function returns guard value - */ -static int hw_test_and_set_setup_guard(void) -{ - return hw_ctest_and_write(CAP_USBCMD, USBCMD_SUTW, USBCMD_SUTW); -} - -/** - * hw_usb_set_address: configures USB address (execute without interruption) - * @value: new USB address - * - * This function returns an error code - */ -static int hw_usb_set_address(u8 value) -{ - /* advance */ - hw_cwrite(CAP_DEVICEADDR, DEVICEADDR_USBADR | DEVICEADDR_USBADRA, - value << ffs_nr(DEVICEADDR_USBADR) | DEVICEADDR_USBADRA); - return 0; -} - -/** - * hw_usb_reset: restart device after a bus reset (execute without - * interruption) - * - * This function returns an error code - */ -static int hw_usb_reset(void) -{ - hw_usb_set_address(0); - - /* ESS flushes only at end?!? */ - hw_cwrite(CAP_ENDPTFLUSH, ~0, ~0); /* flush all EPs */ - - /* clear setup token semaphores */ - hw_cwrite(CAP_ENDPTSETUPSTAT, 0, 0); /* writes its content */ - - /* clear complete status */ - hw_cwrite(CAP_ENDPTCOMPLETE, 0, 0); /* writes its content */ - - /* wait until all bits cleared */ - while (hw_cread(CAP_ENDPTPRIME, ~0)) - udelay(10); /* not RTOS friendly */ - - /* reset all endpoints ? */ - - /* reset internal status and wait for further instructions - no need to verify the port reset status (ESS does it) */ - - return 0; -} - -/****************************************************************************** - * DBG block - *****************************************************************************/ -/** - * show_device: prints information about device capabilities and status - * - * Check "device.h" for details - */ -static ssize_t show_device(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - struct usb_gadget *gadget = &udc->gadget; - int n = 0; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - n += scnprintf(buf + n, PAGE_SIZE - n, "speed = %d\n", - gadget->speed); - n += scnprintf(buf + n, PAGE_SIZE - n, "max_speed = %d\n", - gadget->max_speed); - /* TODO: Scheduled for removal in 3.8. */ - n += scnprintf(buf + n, PAGE_SIZE - n, "is_dualspeed = %d\n", - gadget_is_dualspeed(gadget)); - n += scnprintf(buf + n, PAGE_SIZE - n, "is_otg = %d\n", - gadget->is_otg); - n += scnprintf(buf + n, PAGE_SIZE - n, "is_a_peripheral = %d\n", - gadget->is_a_peripheral); - n += scnprintf(buf + n, PAGE_SIZE - n, "b_hnp_enable = %d\n", - gadget->b_hnp_enable); - n += scnprintf(buf + n, PAGE_SIZE - n, "a_hnp_support = %d\n", - gadget->a_hnp_support); - n += scnprintf(buf + n, PAGE_SIZE - n, "a_alt_hnp_support = %d\n", - gadget->a_alt_hnp_support); - n += scnprintf(buf + n, PAGE_SIZE - n, "name = %s\n", - (gadget->name ? gadget->name : "")); - - return n; -} -static DEVICE_ATTR(device, S_IRUSR, show_device, NULL); - -/** - * show_driver: prints information about attached gadget (if any) - * - * Check "device.h" for details - */ -static ssize_t show_driver(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - struct usb_gadget_driver *driver = udc->driver; - int n = 0; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - if (driver == NULL) - return scnprintf(buf, PAGE_SIZE, - "There is no gadget attached!\n"); - - n += scnprintf(buf + n, PAGE_SIZE - n, "function = %s\n", - (driver->function ? driver->function : "")); - n += scnprintf(buf + n, PAGE_SIZE - n, "max speed = %d\n", - driver->max_speed); - - return n; -} -static DEVICE_ATTR(driver, S_IRUSR, show_driver, NULL); - -/* Maximum event message length */ -#define DBG_DATA_MSG 64UL - -/* Maximum event messages */ -#define DBG_DATA_MAX 128UL - -/* Event buffer descriptor */ -static struct { - char (buf[DBG_DATA_MAX])[DBG_DATA_MSG]; /* buffer */ - unsigned idx; /* index */ - unsigned tty; /* print to console? */ - rwlock_t lck; /* lock */ -} dbg_data = { - .idx = 0, - .tty = 0, - .lck = __RW_LOCK_UNLOCKED(lck) -}; - -/** - * dbg_dec: decrements debug event index - * @idx: buffer index - */ -static void dbg_dec(unsigned *idx) -{ - *idx = (*idx - 1) & (DBG_DATA_MAX-1); -} - -/** - * dbg_inc: increments debug event index - * @idx: buffer index - */ -static void dbg_inc(unsigned *idx) -{ - *idx = (*idx + 1) & (DBG_DATA_MAX-1); -} - -/** - * dbg_print: prints the common part of the event - * @addr: endpoint address - * @name: event name - * @status: status - * @extra: extra information - */ -static void dbg_print(u8 addr, const char *name, int status, const char *extra) -{ - struct timeval tval; - unsigned int stamp; - unsigned long flags; - - write_lock_irqsave(&dbg_data.lck, flags); - - do_gettimeofday(&tval); - stamp = tval.tv_sec & 0xFFFF; /* 2^32 = 4294967296. Limit to 4096s */ - stamp = stamp * 1000000 + tval.tv_usec; - - scnprintf(dbg_data.buf[dbg_data.idx], DBG_DATA_MSG, - "%04X\t? %02X %-7.7s %4i ?\t%s\n", - stamp, addr, name, status, extra); - - dbg_inc(&dbg_data.idx); - - write_unlock_irqrestore(&dbg_data.lck, flags); - - if (dbg_data.tty != 0) - pr_notice("%04X\t? %02X %-7.7s %4i ?\t%s\n", - stamp, addr, name, status, extra); -} - -/** - * dbg_done: prints a DONE event - * @addr: endpoint address - * @td: transfer descriptor - * @status: status - */ -static void dbg_done(u8 addr, const u32 token, int status) -{ - char msg[DBG_DATA_MSG]; - - scnprintf(msg, sizeof(msg), "%d %02X", - (int)(token & TD_TOTAL_BYTES) >> ffs_nr(TD_TOTAL_BYTES), - (int)(token & TD_STATUS) >> ffs_nr(TD_STATUS)); - dbg_print(addr, "DONE", status, msg); -} - -/** - * dbg_event: prints a generic event - * @addr: endpoint address - * @name: event name - * @status: status - */ -static void dbg_event(u8 addr, const char *name, int status) -{ - if (name != NULL) - dbg_print(addr, name, status, ""); -} - -/* - * dbg_queue: prints a QUEUE event - * @addr: endpoint address - * @req: USB request - * @status: status - */ -static void dbg_queue(u8 addr, const struct usb_request *req, int status) -{ - char msg[DBG_DATA_MSG]; - - if (req != NULL) { - scnprintf(msg, sizeof(msg), - "%d %d", !req->no_interrupt, req->length); - dbg_print(addr, "QUEUE", status, msg); - } -} - -/** - * dbg_setup: prints a SETUP event - * @addr: endpoint address - * @req: setup request - */ -static void dbg_setup(u8 addr, const struct usb_ctrlrequest *req) -{ - char msg[DBG_DATA_MSG]; - - if (req != NULL) { - scnprintf(msg, sizeof(msg), - "%02X %02X %04X %04X %d", req->bRequestType, - req->bRequest, le16_to_cpu(req->wValue), - le16_to_cpu(req->wIndex), le16_to_cpu(req->wLength)); - dbg_print(addr, "SETUP", 0, msg); - } -} - -/** - * show_events: displays the event buffer - * - * Check "device.h" for details - */ -static ssize_t show_events(struct device *dev, struct device_attribute *attr, - char *buf) -{ - unsigned long flags; - unsigned i, j, n = 0; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - read_lock_irqsave(&dbg_data.lck, flags); - - i = dbg_data.idx; - for (dbg_dec(&i); i != dbg_data.idx; dbg_dec(&i)) { - n += strlen(dbg_data.buf[i]); - if (n >= PAGE_SIZE) { - n -= strlen(dbg_data.buf[i]); - break; - } - } - for (j = 0, dbg_inc(&i); j < n; dbg_inc(&i)) - j += scnprintf(buf + j, PAGE_SIZE - j, - "%s", dbg_data.buf[i]); - - read_unlock_irqrestore(&dbg_data.lck, flags); - - return n; -} - -/** - * store_events: configure if events are going to be also printed to console - * - * Check "device.h" for details - */ -static ssize_t store_events(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - unsigned tty; - - dbg_trace("[%s] %p, %d\n", __func__, buf, count); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - goto done; - } - - if (sscanf(buf, "%u", &tty) != 1 || tty > 1) { - dev_err(dev, "<1|0>: enable|disable console log\n"); - goto done; - } - - dbg_data.tty = tty; - dev_info(dev, "tty = %u", dbg_data.tty); - - done: - return count; -} -static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events); - -/** - * show_inters: interrupt status, enable status and historic - * - * Check "device.h" for details - */ -static ssize_t show_inters(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - u32 intr; - unsigned i, j, n = 0; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - spin_lock_irqsave(udc->lock, flags); - - n += scnprintf(buf + n, PAGE_SIZE - n, - "status = %08x\n", hw_read_intr_status()); - n += scnprintf(buf + n, PAGE_SIZE - n, - "enable = %08x\n", hw_read_intr_enable()); - - n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n", - isr_statistics.test); - n += scnprintf(buf + n, PAGE_SIZE - n, "? ui = %d\n", - isr_statistics.ui); - n += scnprintf(buf + n, PAGE_SIZE - n, "? uei = %d\n", - isr_statistics.uei); - n += scnprintf(buf + n, PAGE_SIZE - n, "? pci = %d\n", - isr_statistics.pci); - n += scnprintf(buf + n, PAGE_SIZE - n, "? uri = %d\n", - isr_statistics.uri); - n += scnprintf(buf + n, PAGE_SIZE - n, "? sli = %d\n", - isr_statistics.sli); - n += scnprintf(buf + n, PAGE_SIZE - n, "*none = %d\n", - isr_statistics.none); - n += scnprintf(buf + n, PAGE_SIZE - n, "*hndl = %d\n", - isr_statistics.hndl.cnt); - - for (i = isr_statistics.hndl.idx, j = 0; j <= ISR_MASK; j++, i++) { - i &= ISR_MASK; - intr = isr_statistics.hndl.buf[i]; - - if (USBi_UI & intr) - n += scnprintf(buf + n, PAGE_SIZE - n, "ui "); - intr &= ~USBi_UI; - if (USBi_UEI & intr) - n += scnprintf(buf + n, PAGE_SIZE - n, "uei "); - intr &= ~USBi_UEI; - if (USBi_PCI & intr) - n += scnprintf(buf + n, PAGE_SIZE - n, "pci "); - intr &= ~USBi_PCI; - if (USBi_URI & intr) - n += scnprintf(buf + n, PAGE_SIZE - n, "uri "); - intr &= ~USBi_URI; - if (USBi_SLI & intr) - n += scnprintf(buf + n, PAGE_SIZE - n, "sli "); - intr &= ~USBi_SLI; - if (intr) - n += scnprintf(buf + n, PAGE_SIZE - n, "??? "); - if (isr_statistics.hndl.buf[i]) - n += scnprintf(buf + n, PAGE_SIZE - n, "\n"); - } - - spin_unlock_irqrestore(udc->lock, flags); - - return n; -} - -/** - * store_inters: enable & force or disable an individual interrutps - * (to be used for test purposes only) - * - * Check "device.h" for details - */ -static ssize_t store_inters(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - unsigned en, bit; - - dbg_trace("[%s] %p, %d\n", __func__, buf, count); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - goto done; - } - - if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) { - dev_err(dev, "<1|0> <bit>: enable|disable interrupt"); - goto done; - } - - spin_lock_irqsave(udc->lock, flags); - if (en) { - if (hw_intr_force(bit)) - dev_err(dev, "invalid bit number\n"); - else - isr_statistics.test++; - } else { - if (hw_intr_clear(bit)) - dev_err(dev, "invalid bit number\n"); - } - spin_unlock_irqrestore(udc->lock, flags); - - done: - return count; -} -static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters); - -/** - * show_port_test: reads port test mode - * - * Check "device.h" for details - */ -static ssize_t show_port_test(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - unsigned mode; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - spin_lock_irqsave(udc->lock, flags); - mode = hw_port_test_get(); - spin_unlock_irqrestore(udc->lock, flags); - - return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode); -} - -/** - * store_port_test: writes port test mode - * - * Check "device.h" for details - */ -static ssize_t store_port_test(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - unsigned mode; - - dbg_trace("[%s] %p, %d\n", __func__, buf, count); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - goto done; - } - - if (sscanf(buf, "%u", &mode) != 1) { - dev_err(dev, "<mode>: set port test mode"); - goto done; - } - - spin_lock_irqsave(udc->lock, flags); - if (hw_port_test_set(mode)) - dev_err(dev, "invalid mode\n"); - spin_unlock_irqrestore(udc->lock, flags); - - done: - return count; -} -static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR, - show_port_test, store_port_test); - -/** - * show_qheads: DMA contents of all queue heads - * - * Check "device.h" for details - */ -static ssize_t show_qheads(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - unsigned i, j, n = 0; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - spin_lock_irqsave(udc->lock, flags); - for (i = 0; i < hw_ep_max/2; i++) { - struct ci13xxx_ep *mEpRx = &udc->ci13xxx_ep[i]; - struct ci13xxx_ep *mEpTx = &udc->ci13xxx_ep[i + hw_ep_max/2]; - n += scnprintf(buf + n, PAGE_SIZE - n, - "EP=%02i: RX=%08X TX=%08X\n", - i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma); - for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) { - n += scnprintf(buf + n, PAGE_SIZE - n, - " %04X: %08X %08X\n", j, - *((u32 *)mEpRx->qh.ptr + j), - *((u32 *)mEpTx->qh.ptr + j)); - } - } - spin_unlock_irqrestore(udc->lock, flags); - - return n; -} -static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL); - -/** - * show_registers: dumps all registers - * - * Check "device.h" for details - */ -#define DUMP_ENTRIES 512 -static ssize_t show_registers(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - u32 *dump; - unsigned i, k, n = 0; - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL); - if (!dump) { - dev_err(dev, "%s: out of memory\n", __func__); - return 0; - } - - spin_lock_irqsave(udc->lock, flags); - k = hw_register_read(dump, DUMP_ENTRIES); - spin_unlock_irqrestore(udc->lock, flags); - - for (i = 0; i < k; i++) { - n += scnprintf(buf + n, PAGE_SIZE - n, - "reg[0x%04X] = 0x%08X\n", - i * (unsigned)sizeof(u32), dump[i]); - } - kfree(dump); - - return n; -} - -/** - * store_registers: writes value to register address - * - * Check "device.h" for details - */ -static ssize_t store_registers(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long addr, data, flags; - - dbg_trace("[%s] %p, %d\n", __func__, buf, count); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - goto done; - } - - if (sscanf(buf, "%li %li", &addr, &data) != 2) { - dev_err(dev, "<addr> <data>: write data to register address"); - goto done; - } - - spin_lock_irqsave(udc->lock, flags); - if (hw_register_write(addr, data)) - dev_err(dev, "invalid address range\n"); - spin_unlock_irqrestore(udc->lock, flags); - - done: - return count; -} -static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR, - show_registers, store_registers); - -/** - * show_requests: DMA contents of all requests currently queued (all endpts) - * - * Check "device.h" for details - */ -static ssize_t show_requests(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - unsigned long flags; - struct list_head *ptr = NULL; - struct ci13xxx_req *req = NULL; - unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32); - - dbg_trace("[%s] %p\n", __func__, buf); - if (attr == NULL || buf == NULL) { - dev_err(dev, "[%s] EINVAL\n", __func__); - return 0; - } - - spin_lock_irqsave(udc->lock, flags); - for (i = 0; i < hw_ep_max; i++) - list_for_each(ptr, &udc->ci13xxx_ep[i].qh.queue) - { - req = list_entry(ptr, struct ci13xxx_req, queue); - - n += scnprintf(buf + n, PAGE_SIZE - n, - "EP=%02i: TD=%08X %s\n", - i % hw_ep_max/2, (u32)req->dma, - ((i < hw_ep_max/2) ? "RX" : "TX")); - - for (j = 0; j < qSize; j++) - n += scnprintf(buf + n, PAGE_SIZE - n, - " %04X: %08X\n", j, - *((u32 *)req->ptr + j)); - } - spin_unlock_irqrestore(udc->lock, flags); - - return n; -} -static DEVICE_ATTR(requests, S_IRUSR, show_requests, NULL); - -/** - * dbg_create_files: initializes the attribute interface - * @dev: device - * - * This function returns an error code - */ -__maybe_unused static int dbg_create_files(struct device *dev) -{ - int retval = 0; - - if (dev == NULL) - return -EINVAL; - retval = device_create_file(dev, &dev_attr_device); - if (retval) - goto done; - retval = device_create_file(dev, &dev_attr_driver); - if (retval) - goto rm_device; - retval = device_create_file(dev, &dev_attr_events); - if (retval) - goto rm_driver; - retval = device_create_file(dev, &dev_attr_inters); - if (retval) - goto rm_events; - retval = device_create_file(dev, &dev_attr_port_test); - if (retval) - goto rm_inters; - retval = device_create_file(dev, &dev_attr_qheads); - if (retval) - goto rm_port_test; - retval = device_create_file(dev, &dev_attr_registers); - if (retval) - goto rm_qheads; - retval = device_create_file(dev, &dev_attr_requests); - if (retval) - goto rm_registers; - return 0; - - rm_registers: - device_remove_file(dev, &dev_attr_registers); - rm_qheads: - device_remove_file(dev, &dev_attr_qheads); - rm_port_test: - device_remove_file(dev, &dev_attr_port_test); - rm_inters: - device_remove_file(dev, &dev_attr_inters); - rm_events: - device_remove_file(dev, &dev_attr_events); - rm_driver: - device_remove_file(dev, &dev_attr_driver); - rm_device: - device_remove_file(dev, &dev_attr_device); - done: - return retval; -} - -/** - * dbg_remove_files: destroys the attribute interface - * @dev: device - * - * This function returns an error code - */ -__maybe_unused static int dbg_remove_files(struct device *dev) -{ - if (dev == NULL) - return -EINVAL; - device_remove_file(dev, &dev_attr_requests); - device_remove_file(dev, &dev_attr_registers); - device_remove_file(dev, &dev_attr_qheads); - device_remove_file(dev, &dev_attr_port_test); - device_remove_file(dev, &dev_attr_inters); - device_remove_file(dev, &dev_attr_events); - device_remove_file(dev, &dev_attr_driver); - device_remove_file(dev, &dev_attr_device); - return 0; -} - -/****************************************************************************** - * UTIL block - *****************************************************************************/ -/** - * _usb_addr: calculates endpoint address from direction & number - * @ep: endpoint - */ -static inline u8 _usb_addr(struct ci13xxx_ep *ep) -{ - return ((ep->dir == TX) ? USB_ENDPOINT_DIR_MASK : 0) | ep->num; -} - -/** - * _hardware_queue: configures a request at hardware level - * @gadget: gadget - * @mEp: endpoint - * - * This function returns an error code - */ -static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) -{ - unsigned i; - int ret = 0; - unsigned length = mReq->req.length; - - trace("%p, %p", mEp, mReq); - - /* don't queue twice */ - if (mReq->req.status == -EALREADY) - return -EALREADY; - - mReq->req.status = -EALREADY; - if (length && mReq->req.dma == DMA_ADDR_INVALID) { - mReq->req.dma = \ - dma_map_single(mEp->device, mReq->req.buf, - length, mEp->dir ? DMA_TO_DEVICE : - DMA_FROM_DEVICE); - if (mReq->req.dma == 0) - return -ENOMEM; - - mReq->map = 1; - } - - if (mReq->req.zero && length && (length % mEp->ep.maxpacket == 0)) { - mReq->zptr = dma_pool_alloc(mEp->td_pool, GFP_ATOMIC, - &mReq->zdma); - if (mReq->zptr == NULL) { - if (mReq->map) { - dma_unmap_single(mEp->device, mReq->req.dma, - length, mEp->dir ? DMA_TO_DEVICE : - DMA_FROM_DEVICE); - mReq->req.dma = DMA_ADDR_INVALID; - mReq->map = 0; - } - return -ENOMEM; - } - memset(mReq->zptr, 0, sizeof(*mReq->zptr)); - mReq->zptr->next = TD_TERMINATE; - mReq->zptr->token = TD_STATUS_ACTIVE; - if (!mReq->req.no_interrupt) - mReq->zptr->token |= TD_IOC; - } - /* - * TD configuration - * TODO - handle requests which spawns into several TDs - */ - memset(mReq->ptr, 0, sizeof(*mReq->ptr)); - mReq->ptr->token = length << ffs_nr(TD_TOTAL_BYTES); - mReq->ptr->token &= TD_TOTAL_BYTES; - mReq->ptr->token |= TD_STATUS_ACTIVE; - if (mReq->zptr) { - mReq->ptr->next = mReq->zdma; - } else { - mReq->ptr->next = TD_TERMINATE; - if (!mReq->req.no_interrupt) - mReq->ptr->token |= TD_IOC; - } - mReq->ptr->page[0] = mReq->req.dma; - for (i = 1; i < 5; i++) - mReq->ptr->page[i] = - (mReq->req.dma + i * CI13XXX_PAGE_SIZE) & ~TD_RESERVED_MASK; - - if (!list_empty(&mEp->qh.queue)) { - struct ci13xxx_req *mReqPrev; - int n = hw_ep_bit(mEp->num, mEp->dir); - int tmp_stat; - - mReqPrev = list_entry(mEp->qh.queue.prev, - struct ci13xxx_req, queue); - if (mReqPrev->zptr) - mReqPrev->zptr->next = mReq->dma & TD_ADDR_MASK; - else - mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK; - wmb(); - if (hw_cread(CAP_ENDPTPRIME, BIT(n))) - goto done; - do { - hw_cwrite(CAP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW); - tmp_stat = hw_cread(CAP_ENDPTSTAT, BIT(n)); - } while (!hw_cread(CAP_USBCMD, USBCMD_ATDTW)); - hw_cwrite(CAP_USBCMD, USBCMD_ATDTW, 0); - if (tmp_stat) - goto done; - } - - /* QH configuration */ - mEp->qh.ptr->td.next = mReq->dma; /* TERMINATE = 0 */ - mEp->qh.ptr->td.token &= ~TD_STATUS; /* clear status */ - mEp->qh.ptr->cap |= QH_ZLT; - - wmb(); /* synchronize before ep prime */ - - ret = hw_ep_prime(mEp->num, mEp->dir, - mEp->type == USB_ENDPOINT_XFER_CONTROL); -done: - return ret; -} - -/** - * _hardware_dequeue: handles a request at hardware level - * @gadget: gadget - * @mEp: endpoint - * - * This function returns an error code - */ -static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) -{ - trace("%p, %p", mEp, mReq); - - if (mReq->req.status != -EALREADY) - return -EINVAL; - - if ((TD_STATUS_ACTIVE & mReq->ptr->token) != 0) - return -EBUSY; - - if (mReq->zptr) { - if ((TD_STATUS_ACTIVE & mReq->zptr->token) != 0) - return -EBUSY; - dma_pool_free(mEp->td_pool, mReq->zptr, mReq->zdma); - mReq->zptr = NULL; - } - - mReq->req.status = 0; - - if (mReq->map) { - dma_unmap_single(mEp->device, mReq->req.dma, mReq->req.length, - mEp->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - mReq->req.dma = DMA_ADDR_INVALID; - mReq->map = 0; - } - - mReq->req.status = mReq->ptr->token & TD_STATUS; - if ((TD_STATUS_HALTED & mReq->req.status) != 0) - mReq->req.status = -1; - else if ((TD_STATUS_DT_ERR & mReq->req.status) != 0) - mReq->req.status = -1; - else if ((TD_STATUS_TR_ERR & mReq->req.status) != 0) - mReq->req.status = -1; - - mReq->req.actual = mReq->ptr->token & TD_TOTAL_BYTES; - mReq->req.actual >>= ffs_nr(TD_TOTAL_BYTES); - mReq->req.actual = mReq->req.length - mReq->req.actual; - mReq->req.actual = mReq->req.status ? 0 : mReq->req.actual; - - return mReq->req.actual; -} - -/** - * _ep_nuke: dequeues all endpoint requests - * @mEp: endpoint - * - * This function returns an error code - * Caller must hold lock - */ -static int _ep_nuke(struct ci13xxx_ep *mEp) -__releases(mEp->lock) -__acquires(mEp->lock) -{ - trace("%p", mEp); - - if (mEp == NULL) - return -EINVAL; - - hw_ep_flush(mEp->num, mEp->dir); - - while (!list_empty(&mEp->qh.queue)) { - - /* pop oldest request */ - struct ci13xxx_req *mReq = \ - list_entry(mEp->qh.queue.next, - struct ci13xxx_req, queue); - list_del_init(&mReq->queue); - mReq->req.status = -ESHUTDOWN; - - if (mReq->req.complete != NULL) { - spin_unlock(mEp->lock); - mReq->req.complete(&mEp->ep, &mReq->req); - spin_lock(mEp->lock); - } - } - return 0; -} - -/** - * _gadget_stop_activity: stops all USB activity, flushes & disables all endpts - * @gadget: gadget - * - * This function returns an error code - */ -static int _gadget_stop_activity(struct usb_gadget *gadget) -{ - struct usb_ep *ep; - struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget); - unsigned long flags; - - trace("%p", gadget); - - if (gadget == NULL) - return -EINVAL; - - spin_lock_irqsave(udc->lock, flags); - udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->remote_wakeup = 0; - udc->suspended = 0; - spin_unlock_irqrestore(udc->lock, flags); - - /* flush all endpoints */ - gadget_for_each_ep(ep, gadget) { - usb_ep_fifo_flush(ep); - } - usb_ep_fifo_flush(&udc->ep0out.ep); - usb_ep_fifo_flush(&udc->ep0in.ep); - - udc->driver->disconnect(gadget); - - /* make sure to disable all endpoints */ - gadget_for_each_ep(ep, gadget) { - usb_ep_disable(ep); - } - - if (udc->status != NULL) { - usb_ep_free_request(&udc->ep0in.ep, udc->status); - udc->status = NULL; - } - - return 0; -} - -/****************************************************************************** - * ISR block - *****************************************************************************/ -/** - * isr_reset_handler: USB reset interrupt handler - * @udc: UDC device - * - * This function resets USB engine after a bus reset occurred - */ -static void isr_reset_handler(struct ci13xxx *udc) -__releases(udc->lock) -__acquires(udc->lock) -{ - int retval; - - trace("%p", udc); - - if (udc == NULL) { - err("EINVAL"); - return; - } - - dbg_event(0xFF, "BUS RST", 0); - - spin_unlock(udc->lock); - retval = _gadget_stop_activity(&udc->gadget); - if (retval) - goto done; - - retval = hw_usb_reset(); - if (retval) - goto done; - - udc->status = usb_ep_alloc_request(&udc->ep0in.ep, GFP_ATOMIC); - if (udc->status == NULL) - retval = -ENOMEM; - - spin_lock(udc->lock); - - done: - if (retval) - err("error: %i", retval); -} - -/** - * isr_get_status_complete: get_status request complete function - * @ep: endpoint - * @req: request handled - * - * Caller must release lock - */ -static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req) -{ - trace("%p, %p", ep, req); - - if (ep == NULL || req == NULL) { - err("EINVAL"); - return; - } - - kfree(req->buf); - usb_ep_free_request(ep, req); -} - -/** - * isr_get_status_response: get_status request response - * @udc: udc struct - * @setup: setup request packet - * - * This function returns an error code - */ -static int isr_get_status_response(struct ci13xxx *udc, - struct usb_ctrlrequest *setup) -__releases(mEp->lock) -__acquires(mEp->lock) -{ - struct ci13xxx_ep *mEp = &udc->ep0in; - struct usb_request *req = NULL; - gfp_t gfp_flags = GFP_ATOMIC; - int dir, num, retval; - - trace("%p, %p", mEp, setup); - - if (mEp == NULL || setup == NULL) - return -EINVAL; - - spin_unlock(mEp->lock); - req = usb_ep_alloc_request(&mEp->ep, gfp_flags); - spin_lock(mEp->lock); - if (req == NULL) - return -ENOMEM; - - req->complete = isr_get_status_complete; - req->length = 2; - req->buf = kzalloc(req->length, gfp_flags); - if (req->buf == NULL) { - retval = -ENOMEM; - goto err_free_req; - } - - if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) { - /* Assume that device is bus powered for now. */ - *((u16 *)req->buf) = _udc->remote_wakeup << 1; - retval = 0; - } else if ((setup->bRequestType & USB_RECIP_MASK) \ - == USB_RECIP_ENDPOINT) { - dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ? - TX : RX; - num = le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK; - *((u16 *)req->buf) = hw_ep_get_halt(num, dir); - } - /* else do nothing; reserved for future use */ - - spin_unlock(mEp->lock); - retval = usb_ep_queue(&mEp->ep, req, gfp_flags); - spin_lock(mEp->lock); - if (retval) - goto err_free_buf; - - return 0; - - err_free_buf: - kfree(req->buf); - err_free_req: - spin_unlock(mEp->lock); - usb_ep_free_request(&mEp->ep, req); - spin_lock(mEp->lock); - return retval; -} - -/** - * isr_setup_status_complete: setup_status request complete function - * @ep: endpoint - * @req: request handled - * - * Caller must release lock. Put the port in test mode if test mode - * feature is selected. - */ -static void -isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct ci13xxx *udc = req->context; - unsigned long flags; - - trace("%p, %p", ep, req); - - spin_lock_irqsave(udc->lock, flags); - if (udc->test_mode) - hw_port_test_set(udc->test_mode); - spin_unlock_irqrestore(udc->lock, flags); -} - -/** - * isr_setup_status_phase: queues the status phase of a setup transation - * @udc: udc struct - * - * This function returns an error code - */ -static int isr_setup_status_phase(struct ci13xxx *udc) -__releases(mEp->lock) -__acquires(mEp->lock) -{ - int retval; - struct ci13xxx_ep *mEp; - - trace("%p", udc); - - mEp = (udc->ep0_dir == TX) ? &udc->ep0out : &udc->ep0in; - udc->status->context = udc; - udc->status->complete = isr_setup_status_complete; - - spin_unlock(mEp->lock); - retval = usb_ep_queue(&mEp->ep, udc->status, GFP_ATOMIC); - spin_lock(mEp->lock); - - return retval; -} - -/** - * isr_tr_complete_low: transaction complete low level handler - * @mEp: endpoint - * - * This function returns an error code - * Caller must hold lock - */ -static int isr_tr_complete_low(struct ci13xxx_ep *mEp) -__releases(mEp->lock) -__acquires(mEp->lock) -{ - struct ci13xxx_req *mReq, *mReqTemp; - struct ci13xxx_ep *mEpTemp = mEp; - int uninitialized_var(retval); - - trace("%p", mEp); - - if (list_empty(&mEp->qh.queue)) - return -EINVAL; - - list_for_each_entry_safe(mReq, mReqTemp, &mEp->qh.queue, - queue) { - retval = _hardware_dequeue(mEp, mReq); - if (retval < 0) - break; - list_del_init(&mReq->queue); - dbg_done(_usb_addr(mEp), mReq->ptr->token, retval); - if (mReq->req.complete != NULL) { - spin_unlock(mEp->lock); - if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) && - mReq->req.length) - mEpTemp = &_udc->ep0in; - mReq->req.complete(&mEpTemp->ep, &mReq->req); - spin_lock(mEp->lock); - } - } - - if (retval == -EBUSY) - retval = 0; - if (retval < 0) - dbg_event(_usb_addr(mEp), "DONE", retval); - - return retval; -} - -/** - * isr_tr_complete_handler: transaction complete interrupt handler - * @udc: UDC descriptor - * - * This function handles traffic events - */ -static void isr_tr_complete_handler(struct ci13xxx *udc) -__releases(udc->lock) -__acquires(udc->lock) -{ - unsigned i; - u8 tmode = 0; - - trace("%p", udc); - - if (udc == NULL) { - err("EINVAL"); - return; - } - - for (i = 0; i < hw_ep_max; i++) { - struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i]; - int type, num, dir, err = -EINVAL; - struct usb_ctrlrequest req; - - if (mEp->desc == NULL) - continue; /* not configured */ - - if (hw_test_and_clear_complete(i)) { - err = isr_tr_complete_low(mEp); - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) { - if (err > 0) /* needs status phase */ - err = isr_setup_status_phase(udc); - if (err < 0) { - dbg_event(_usb_addr(mEp), - "ERROR", err); - spin_unlock(udc->lock); - if (usb_ep_set_halt(&mEp->ep)) - err("error: ep_set_halt"); - spin_lock(udc->lock); - } - } - } - - if (mEp->type != USB_ENDPOINT_XFER_CONTROL || - !hw_test_and_clear_setup_status(i)) - continue; - - if (i != 0) { - warn("ctrl traffic received at endpoint"); - continue; - } - - /* - * Flush data and handshake transactions of previous - * setup packet. - */ - _ep_nuke(&udc->ep0out); - _ep_nuke(&udc->ep0in); - - /* read_setup_packet */ - do { - hw_test_and_set_setup_guard(); - memcpy(&req, &mEp->qh.ptr->setup, sizeof(req)); - } while (!hw_test_and_clear_setup_guard()); - - type = req.bRequestType; - - udc->ep0_dir = (type & USB_DIR_IN) ? TX : RX; - - dbg_setup(_usb_addr(mEp), &req); - - switch (req.bRequest) { - case USB_REQ_CLEAR_FEATURE: - if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) && - le16_to_cpu(req.wValue) == - USB_ENDPOINT_HALT) { - if (req.wLength != 0) - break; - num = le16_to_cpu(req.wIndex); - dir = num & USB_ENDPOINT_DIR_MASK; - num &= USB_ENDPOINT_NUMBER_MASK; - if (dir) /* TX */ - num += hw_ep_max/2; - if (!udc->ci13xxx_ep[num].wedge) { - spin_unlock(udc->lock); - err = usb_ep_clear_halt( - &udc->ci13xxx_ep[num].ep); - spin_lock(udc->lock); - if (err) - break; - } - err = isr_setup_status_phase(udc); - } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) && - le16_to_cpu(req.wValue) == - USB_DEVICE_REMOTE_WAKEUP) { - if (req.wLength != 0) - break; - udc->remote_wakeup = 0; - err = isr_setup_status_phase(udc); - } else { - goto delegate; - } - break; - case USB_REQ_GET_STATUS: - if (type != (USB_DIR_IN|USB_RECIP_DEVICE) && - type != (USB_DIR_IN|USB_RECIP_ENDPOINT) && - type != (USB_DIR_IN|USB_RECIP_INTERFACE)) - goto delegate; - if (le16_to_cpu(req.wLength) != 2 || - le16_to_cpu(req.wValue) != 0) - break; - err = isr_get_status_response(udc, &req); - break; - case USB_REQ_SET_ADDRESS: - if (type != (USB_DIR_OUT|USB_RECIP_DEVICE)) - goto delegate; - if (le16_to_cpu(req.wLength) != 0 || - le16_to_cpu(req.wIndex) != 0) - break; - err = hw_usb_set_address((u8)le16_to_cpu(req.wValue)); - if (err) - break; - err = isr_setup_status_phase(udc); - break; - case USB_REQ_SET_FEATURE: - if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) && - le16_to_cpu(req.wValue) == - USB_ENDPOINT_HALT) { - if (req.wLength != 0) - break; - num = le16_to_cpu(req.wIndex); - dir = num & USB_ENDPOINT_DIR_MASK; - num &= USB_ENDPOINT_NUMBER_MASK; - if (dir) /* TX */ - num += hw_ep_max/2; - - spin_unlock(udc->lock); - err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep); - spin_lock(udc->lock); - if (!err) - isr_setup_status_phase(udc); - } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) { - if (req.wLength != 0) - break; - switch (le16_to_cpu(req.wValue)) { - case USB_DEVICE_REMOTE_WAKEUP: - udc->remote_wakeup = 1; - err = isr_setup_status_phase(udc); - break; - case USB_DEVICE_TEST_MODE: - tmode = le16_to_cpu(req.wIndex) >> 8; - switch (tmode) { - case TEST_J: - case TEST_K: - case TEST_SE0_NAK: - case TEST_PACKET: - case TEST_FORCE_EN: - udc->test_mode = tmode; - err = isr_setup_status_phase( - udc); - break; - default: - break; - } - default: - goto delegate; - } - } else { - goto delegate; - } - break; - default: -delegate: - if (req.wLength == 0) /* no data phase */ - udc->ep0_dir = TX; - - spin_unlock(udc->lock); - err = udc->driver->setup(&udc->gadget, &req); - spin_lock(udc->lock); - break; - } - - if (err < 0) { - dbg_event(_usb_addr(mEp), "ERROR", err); - - spin_unlock(udc->lock); - if (usb_ep_set_halt(&mEp->ep)) - err("error: ep_set_halt"); - spin_lock(udc->lock); - } - } -} - -/****************************************************************************** - * ENDPT block - *****************************************************************************/ -/** - * ep_enable: configure endpoint, making it usable - * - * Check usb_ep_enable() at "usb_gadget.h" for details - */ -static int ep_enable(struct usb_ep *ep, - const struct usb_endpoint_descriptor *desc) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - int retval = 0; - unsigned long flags; - - trace("%p, %p", ep, desc); - - if (ep == NULL || desc == NULL) - return -EINVAL; - - spin_lock_irqsave(mEp->lock, flags); - - /* only internal SW should enable ctrl endpts */ - - mEp->desc = desc; - - if (!list_empty(&mEp->qh.queue)) - warn("enabling a non-empty endpoint!"); - - mEp->dir = usb_endpoint_dir_in(desc) ? TX : RX; - mEp->num = usb_endpoint_num(desc); - mEp->type = usb_endpoint_type(desc); - - mEp->ep.maxpacket = usb_endpoint_maxp(desc); - - dbg_event(_usb_addr(mEp), "ENABLE", 0); - - mEp->qh.ptr->cap = 0; - - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) - mEp->qh.ptr->cap |= QH_IOS; - else if (mEp->type == USB_ENDPOINT_XFER_ISOC) - mEp->qh.ptr->cap &= ~QH_MULT; - else - mEp->qh.ptr->cap &= ~QH_ZLT; - - mEp->qh.ptr->cap |= - (mEp->ep.maxpacket << ffs_nr(QH_MAX_PKT)) & QH_MAX_PKT; - mEp->qh.ptr->td.next |= TD_TERMINATE; /* needed? */ - - /* - * Enable endpoints in the HW other than ep0 as ep0 - * is always enabled - */ - if (mEp->num) - retval |= hw_ep_enable(mEp->num, mEp->dir, mEp->type); - - spin_unlock_irqrestore(mEp->lock, flags); - return retval; -} - -/** - * ep_disable: endpoint is no longer usable - * - * Check usb_ep_disable() at "usb_gadget.h" for details - */ -static int ep_disable(struct usb_ep *ep) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - int direction, retval = 0; - unsigned long flags; - - trace("%p", ep); - - if (ep == NULL) - return -EINVAL; - else if (mEp->desc == NULL) - return -EBUSY; - - spin_lock_irqsave(mEp->lock, flags); - - /* only internal SW should disable ctrl endpts */ - - direction = mEp->dir; - do { - dbg_event(_usb_addr(mEp), "DISABLE", 0); - - retval |= _ep_nuke(mEp); - retval |= hw_ep_disable(mEp->num, mEp->dir); - - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) - mEp->dir = (mEp->dir == TX) ? RX : TX; - - } while (mEp->dir != direction); - - mEp->desc = NULL; - - spin_unlock_irqrestore(mEp->lock, flags); - return retval; -} - -/** - * ep_alloc_request: allocate a request object to use with this endpoint - * - * Check usb_ep_alloc_request() at "usb_gadget.h" for details - */ -static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = NULL; - - trace("%p, %i", ep, gfp_flags); - - if (ep == NULL) { - err("EINVAL"); - return NULL; - } - - mReq = kzalloc(sizeof(struct ci13xxx_req), gfp_flags); - if (mReq != NULL) { - INIT_LIST_HEAD(&mReq->queue); - mReq->req.dma = DMA_ADDR_INVALID; - - mReq->ptr = dma_pool_alloc(mEp->td_pool, gfp_flags, - &mReq->dma); - if (mReq->ptr == NULL) { - kfree(mReq); - mReq = NULL; - } - } - - dbg_event(_usb_addr(mEp), "ALLOC", mReq == NULL); - - return (mReq == NULL) ? NULL : &mReq->req; -} - -/** - * ep_free_request: frees a request object - * - * Check usb_ep_free_request() at "usb_gadget.h" for details - */ -static void ep_free_request(struct usb_ep *ep, struct usb_request *req) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); - unsigned long flags; - - trace("%p, %p", ep, req); - - if (ep == NULL || req == NULL) { - err("EINVAL"); - return; - } else if (!list_empty(&mReq->queue)) { - err("EBUSY"); - return; - } - - spin_lock_irqsave(mEp->lock, flags); - - if (mReq->ptr) - dma_pool_free(mEp->td_pool, mReq->ptr, mReq->dma); - kfree(mReq); - - dbg_event(_usb_addr(mEp), "FREE", 0); - - spin_unlock_irqrestore(mEp->lock, flags); -} - -/** - * ep_queue: queues (submits) an I/O request to an endpoint - * - * Check usb_ep_queue()* at usb_gadget.h" for details - */ -static int ep_queue(struct usb_ep *ep, struct usb_request *req, - gfp_t __maybe_unused gfp_flags) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); - int retval = 0; - unsigned long flags; - - trace("%p, %p, %X", ep, req, gfp_flags); - - if (ep == NULL || req == NULL || mEp->desc == NULL) - return -EINVAL; - - spin_lock_irqsave(mEp->lock, flags); - - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) { - if (req->length) - mEp = (_udc->ep0_dir == RX) ? - &_udc->ep0out : &_udc->ep0in; - if (!list_empty(&mEp->qh.queue)) { - _ep_nuke(mEp); - retval = -EOVERFLOW; - warn("endpoint ctrl %X nuked", _usb_addr(mEp)); - } - } - - /* first nuke then test link, e.g. previous status has not sent */ - if (!list_empty(&mReq->queue)) { - retval = -EBUSY; - err("request already in queue"); - goto done; - } - - if (req->length > (4 * CI13XXX_PAGE_SIZE)) { - req->length = (4 * CI13XXX_PAGE_SIZE); - retval = -EMSGSIZE; - warn("request length truncated"); - } - - dbg_queue(_usb_addr(mEp), req, retval); - - /* push request */ - mReq->req.status = -EINPROGRESS; - mReq->req.actual = 0; - - retval = _hardware_enqueue(mEp, mReq); - - if (retval == -EALREADY) { - dbg_event(_usb_addr(mEp), "QUEUE", retval); - retval = 0; - } - if (!retval) - list_add_tail(&mReq->queue, &mEp->qh.queue); - - done: - spin_unlock_irqrestore(mEp->lock, flags); - return retval; -} - -/** - * ep_dequeue: dequeues (cancels, unlinks) an I/O request from an endpoint - * - * Check usb_ep_dequeue() at "usb_gadget.h" for details - */ -static int ep_dequeue(struct usb_ep *ep, struct usb_request *req) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); - unsigned long flags; - - trace("%p, %p", ep, req); - - if (ep == NULL || req == NULL || mReq->req.status != -EALREADY || - mEp->desc == NULL || list_empty(&mReq->queue) || - list_empty(&mEp->qh.queue)) - return -EINVAL; - - spin_lock_irqsave(mEp->lock, flags); - - dbg_event(_usb_addr(mEp), "DEQUEUE", 0); - - hw_ep_flush(mEp->num, mEp->dir); - - /* pop request */ - list_del_init(&mReq->queue); - if (mReq->map) { - dma_unmap_single(mEp->device, mReq->req.dma, mReq->req.length, - mEp->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - mReq->req.dma = DMA_ADDR_INVALID; - mReq->map = 0; - } - req->status = -ECONNRESET; - - if (mReq->req.complete != NULL) { - spin_unlock(mEp->lock); - mReq->req.complete(&mEp->ep, &mReq->req); - spin_lock(mEp->lock); - } - - spin_unlock_irqrestore(mEp->lock, flags); - return 0; -} - -/** - * ep_set_halt: sets the endpoint halt feature - * - * Check usb_ep_set_halt() at "usb_gadget.h" for details - */ -static int ep_set_halt(struct usb_ep *ep, int value) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - int direction, retval = 0; - unsigned long flags; - - trace("%p, %i", ep, value); - - if (ep == NULL || mEp->desc == NULL) - return -EINVAL; - - spin_lock_irqsave(mEp->lock, flags); - -#ifndef STALL_IN - /* g_file_storage MS compliant but g_zero fails chapter 9 compliance */ - if (value && mEp->type == USB_ENDPOINT_XFER_BULK && mEp->dir == TX && - !list_empty(&mEp->qh.queue)) { - spin_unlock_irqrestore(mEp->lock, flags); - return -EAGAIN; - } -#endif - - direction = mEp->dir; - do { - dbg_event(_usb_addr(mEp), "HALT", value); - retval |= hw_ep_set_halt(mEp->num, mEp->dir, value); - - if (!value) - mEp->wedge = 0; - - if (mEp->type == USB_ENDPOINT_XFER_CONTROL) - mEp->dir = (mEp->dir == TX) ? RX : TX; - - } while (mEp->dir != direction); - - spin_unlock_irqrestore(mEp->lock, flags); - return retval; -} - -/** - * ep_set_wedge: sets the halt feature and ignores clear requests - * - * Check usb_ep_set_wedge() at "usb_gadget.h" for details - */ -static int ep_set_wedge(struct usb_ep *ep) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - unsigned long flags; - - trace("%p", ep); - - if (ep == NULL || mEp->desc == NULL) - return -EINVAL; - - spin_lock_irqsave(mEp->lock, flags); - - dbg_event(_usb_addr(mEp), "WEDGE", 0); - mEp->wedge = 1; - - spin_unlock_irqrestore(mEp->lock, flags); - - return usb_ep_set_halt(ep); -} - -/** - * ep_fifo_flush: flushes contents of a fifo - * - * Check usb_ep_fifo_flush() at "usb_gadget.h" for details - */ -static void ep_fifo_flush(struct usb_ep *ep) -{ - struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); - unsigned long flags; - - trace("%p", ep); - - if (ep == NULL) { - err("%02X: -EINVAL", _usb_addr(mEp)); - return; - } - - spin_lock_irqsave(mEp->lock, flags); - - dbg_event(_usb_addr(mEp), "FFLUSH", 0); - hw_ep_flush(mEp->num, mEp->dir); - - spin_unlock_irqrestore(mEp->lock, flags); -} - -/** - * Endpoint-specific part of the API to the USB controller hardware - * Check "usb_gadget.h" for details - */ -static const struct usb_ep_ops usb_ep_ops = { - .enable = ep_enable, - .disable = ep_disable, - .alloc_request = ep_alloc_request, - .free_request = ep_free_request, - .queue = ep_queue, - .dequeue = ep_dequeue, - .set_halt = ep_set_halt, - .set_wedge = ep_set_wedge, - .fifo_flush = ep_fifo_flush, -}; - -/****************************************************************************** - * GADGET block - *****************************************************************************/ -static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) -{ - struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); - unsigned long flags; - int gadget_ready = 0; - - if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS)) - return -EOPNOTSUPP; - - spin_lock_irqsave(udc->lock, flags); - udc->vbus_active = is_active; - if (udc->driver) - gadget_ready = 1; - spin_unlock_irqrestore(udc->lock, flags); - - if (gadget_ready) { - if (is_active) { - pm_runtime_get_sync(&_gadget->dev); - hw_device_reset(udc); - hw_device_state(udc->ep0out.qh.dma); - } else { - hw_device_state(0); - if (udc->udc_driver->notify_event) - udc->udc_driver->notify_event(udc, - CI13XXX_CONTROLLER_STOPPED_EVENT); - _gadget_stop_activity(&udc->gadget); - pm_runtime_put_sync(&_gadget->dev); - } - } - - return 0; -} - -static int ci13xxx_wakeup(struct usb_gadget *_gadget) -{ - struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); - unsigned long flags; - int ret = 0; - - trace(); - - spin_lock_irqsave(udc->lock, flags); - if (!udc->remote_wakeup) { - ret = -EOPNOTSUPP; - trace("remote wakeup feature is not enabled\n"); - goto out; - } - if (!hw_cread(CAP_PORTSC, PORTSC_SUSP)) { - ret = -EINVAL; - trace("port is not suspended\n"); - goto out; - } - hw_cwrite(CAP_PORTSC, PORTSC_FPR, PORTSC_FPR); -out: - spin_unlock_irqrestore(udc->lock, flags); - return ret; -} - -static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA) -{ - struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); - - if (udc->transceiver) - return otg_set_power(udc->transceiver, mA); - return -ENOTSUPP; -} - -static int ci13xxx_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int ci13xxx_stop(struct usb_gadget_driver *driver); -/** - * Device operations part of the API to the USB controller hardware, - * which don't involve endpoints (or i/o) - * Check "usb_gadget.h" for details - */ -static const struct usb_gadget_ops usb_gadget_ops = { - .vbus_session = ci13xxx_vbus_session, - .wakeup = ci13xxx_wakeup, - .vbus_draw = ci13xxx_vbus_draw, - .start = ci13xxx_start, - .stop = ci13xxx_stop, -}; - -/** - * ci13xxx_start: register a gadget driver - * @driver: the driver being registered - * @bind: the driver's bind callback - * - * Check ci13xxx_start() at <linux/usb/gadget.h> for details. - * Interrupts are enabled here. - */ -static int ci13xxx_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) -{ - struct ci13xxx *udc = _udc; - unsigned long flags; - int i, j; - int retval = -ENOMEM; - - trace("%p", driver); - - if (driver == NULL || - bind == NULL || - driver->setup == NULL || - driver->disconnect == NULL) - return -EINVAL; - else if (udc == NULL) - return -ENODEV; - else if (udc->driver != NULL) - return -EBUSY; - - /* alloc resources */ - udc->qh_pool = dma_pool_create("ci13xxx_qh", &udc->gadget.dev, - sizeof(struct ci13xxx_qh), - 64, CI13XXX_PAGE_SIZE); - if (udc->qh_pool == NULL) - return -ENOMEM; - - udc->td_pool = dma_pool_create("ci13xxx_td", &udc->gadget.dev, - sizeof(struct ci13xxx_td), - 64, CI13XXX_PAGE_SIZE); - if (udc->td_pool == NULL) { - dma_pool_destroy(udc->qh_pool); - udc->qh_pool = NULL; - return -ENOMEM; - } - - spin_lock_irqsave(udc->lock, flags); - - info("hw_ep_max = %d", hw_ep_max); - - udc->gadget.dev.driver = NULL; - - retval = 0; - for (i = 0; i < hw_ep_max/2; i++) { - for (j = RX; j <= TX; j++) { - int k = i + j * hw_ep_max/2; - struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[k]; - - scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i, - (j == TX) ? "in" : "out"); - - mEp->lock = udc->lock; - mEp->device = &udc->gadget.dev; - mEp->td_pool = udc->td_pool; - - mEp->ep.name = mEp->name; - mEp->ep.ops = &usb_ep_ops; - mEp->ep.maxpacket = CTRL_PAYLOAD_MAX; - - INIT_LIST_HEAD(&mEp->qh.queue); - spin_unlock_irqrestore(udc->lock, flags); - mEp->qh.ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL, - &mEp->qh.dma); - spin_lock_irqsave(udc->lock, flags); - if (mEp->qh.ptr == NULL) - retval = -ENOMEM; - else - memset(mEp->qh.ptr, 0, sizeof(*mEp->qh.ptr)); - - /* skip ep0 out and in endpoints */ - if (i == 0) - continue; - - list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list); - } - } - if (retval) - goto done; - spin_unlock_irqrestore(udc->lock, flags); - udc->ep0out.ep.desc = &ctrl_endpt_out_desc; - retval = usb_ep_enable(&udc->ep0out.ep); - if (retval) - return retval; - - udc->ep0in.ep.desc = &ctrl_endpt_in_desc; - retval = usb_ep_enable(&udc->ep0in.ep); - if (retval) - return retval; - spin_lock_irqsave(udc->lock, flags); - - udc->gadget.ep0 = &udc->ep0in.ep; - /* bind gadget */ - driver->driver.bus = NULL; - udc->gadget.dev.driver = &driver->driver; - - spin_unlock_irqrestore(udc->lock, flags); - retval = bind(&udc->gadget); /* MAY SLEEP */ - spin_lock_irqsave(udc->lock, flags); - - if (retval) { - udc->gadget.dev.driver = NULL; - goto done; - } - - udc->driver = driver; - pm_runtime_get_sync(&udc->gadget.dev); - if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) { - if (udc->vbus_active) { - if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) - hw_device_reset(udc); - } else { - pm_runtime_put_sync(&udc->gadget.dev); - goto done; - } - } - - retval = hw_device_state(udc->ep0out.qh.dma); - if (retval) - pm_runtime_put_sync(&udc->gadget.dev); - - done: - spin_unlock_irqrestore(udc->lock, flags); - return retval; -} - -/** - * ci13xxx_stop: unregister a gadget driver - * - * Check usb_gadget_unregister_driver() at "usb_gadget.h" for details - */ -static int ci13xxx_stop(struct usb_gadget_driver *driver) -{ - struct ci13xxx *udc = _udc; - unsigned long i, flags; - - trace("%p", driver); - - if (driver == NULL || - driver->unbind == NULL || - driver->setup == NULL || - driver->disconnect == NULL || - driver != udc->driver) - return -EINVAL; - - spin_lock_irqsave(udc->lock, flags); - - if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) || - udc->vbus_active) { - hw_device_state(0); - if (udc->udc_driver->notify_event) - udc->udc_driver->notify_event(udc, - CI13XXX_CONTROLLER_STOPPED_EVENT); - spin_unlock_irqrestore(udc->lock, flags); - _gadget_stop_activity(&udc->gadget); - spin_lock_irqsave(udc->lock, flags); - pm_runtime_put(&udc->gadget.dev); - } - - /* unbind gadget */ - spin_unlock_irqrestore(udc->lock, flags); - driver->unbind(&udc->gadget); /* MAY SLEEP */ - spin_lock_irqsave(udc->lock, flags); - - udc->gadget.dev.driver = NULL; - - /* free resources */ - for (i = 0; i < hw_ep_max; i++) { - struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i]; - - if (!list_empty(&mEp->ep.ep_list)) - list_del_init(&mEp->ep.ep_list); - - if (mEp->qh.ptr != NULL) - dma_pool_free(udc->qh_pool, mEp->qh.ptr, mEp->qh.dma); - } - - udc->gadget.ep0 = NULL; - udc->driver = NULL; - - spin_unlock_irqrestore(udc->lock, flags); - - if (udc->td_pool != NULL) { - dma_pool_destroy(udc->td_pool); - udc->td_pool = NULL; - } - if (udc->qh_pool != NULL) { - dma_pool_destroy(udc->qh_pool); - udc->qh_pool = NULL; - } - - return 0; -} - -/****************************************************************************** - * BUS block - *****************************************************************************/ -/** - * udc_irq: global interrupt handler - * - * This function returns IRQ_HANDLED if the IRQ has been handled - * It locks access to registers - */ -static irqreturn_t udc_irq(void) -{ - struct ci13xxx *udc = _udc; - irqreturn_t retval; - u32 intr; - - trace(); - - if (udc == NULL) { - err("ENODEV"); - return IRQ_HANDLED; - } - - spin_lock(udc->lock); - - if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) { - if (hw_cread(CAP_USBMODE, USBMODE_CM) != - USBMODE_CM_DEVICE) { - spin_unlock(udc->lock); - return IRQ_NONE; - } - } - intr = hw_test_and_clear_intr_active(); - if (intr) { - isr_statistics.hndl.buf[isr_statistics.hndl.idx++] = intr; - isr_statistics.hndl.idx &= ISR_MASK; - isr_statistics.hndl.cnt++; - - /* order defines priority - do NOT change it */ - if (USBi_URI & intr) { - isr_statistics.uri++; - isr_reset_handler(udc); - } - if (USBi_PCI & intr) { - isr_statistics.pci++; - udc->gadget.speed = hw_port_is_high_speed() ? - USB_SPEED_HIGH : USB_SPEED_FULL; - if (udc->suspended && udc->driver->resume) { - spin_unlock(udc->lock); - udc->driver->resume(&udc->gadget); - spin_lock(udc->lock); - udc->suspended = 0; - } - } - if (USBi_UEI & intr) - isr_statistics.uei++; - if (USBi_UI & intr) { - isr_statistics.ui++; - isr_tr_complete_handler(udc); - } - if (USBi_SLI & intr) { - if (udc->gadget.speed != USB_SPEED_UNKNOWN && - udc->driver->suspend) { - udc->suspended = 1; - spin_unlock(udc->lock); - udc->driver->suspend(&udc->gadget); - spin_lock(udc->lock); - } - isr_statistics.sli++; - } - retval = IRQ_HANDLED; - } else { - isr_statistics.none++; - retval = IRQ_NONE; - } - spin_unlock(udc->lock); - - return retval; -} - -/** - * udc_release: driver release function - * @dev: device - * - * Currently does nothing - */ -static void udc_release(struct device *dev) -{ - trace("%p", dev); - - if (dev == NULL) - err("EINVAL"); -} - -/** - * udc_probe: parent probe must call this to initialize UDC - * @dev: parent device - * @regs: registers base address - * @name: driver name - * - * This function returns an error code - * No interrupts active, the IRQ has not been requested yet - * Kernel assumes 32-bit DMA operations by default, no need to dma_set_mask - */ -static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev, - void __iomem *regs) -{ - struct ci13xxx *udc; - int retval = 0; - - trace("%p, %p, %p", dev, regs, driver->name); - - if (dev == NULL || regs == NULL || driver == NULL || - driver->name == NULL) - return -EINVAL; - - udc = kzalloc(sizeof(struct ci13xxx), GFP_KERNEL); - if (udc == NULL) - return -ENOMEM; - - udc->lock = &udc_lock; - udc->regs = regs; - udc->udc_driver = driver; - - udc->gadget.ops = &usb_gadget_ops; - udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->gadget.max_speed = USB_SPEED_HIGH; - udc->gadget.is_otg = 0; - udc->gadget.name = driver->name; - - INIT_LIST_HEAD(&udc->gadget.ep_list); - udc->gadget.ep0 = NULL; - - dev_set_name(&udc->gadget.dev, "gadget"); - udc->gadget.dev.dma_mask = dev->dma_mask; - udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask; - udc->gadget.dev.parent = dev; - udc->gadget.dev.release = udc_release; - - retval = hw_device_init(regs); - if (retval < 0) - goto free_udc; - - udc->transceiver = otg_get_transceiver(); - - if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) { - if (udc->transceiver == NULL) { - retval = -ENODEV; - goto free_udc; - } - } - - if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) { - retval = hw_device_reset(udc); - if (retval) - goto put_transceiver; - } - - retval = device_register(&udc->gadget.dev); - if (retval) { - put_device(&udc->gadget.dev); - goto put_transceiver; - } - -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - retval = dbg_create_files(&udc->gadget.dev); -#endif - if (retval) - goto unreg_device; - - if (udc->transceiver) { - retval = otg_set_peripheral(udc->transceiver, &udc->gadget); - if (retval) - goto remove_dbg; - } - - retval = usb_add_gadget_udc(dev, &udc->gadget); - if (retval) - goto remove_trans; - - pm_runtime_no_callbacks(&udc->gadget.dev); - pm_runtime_enable(&udc->gadget.dev); - - _udc = udc; - return retval; - -remove_trans: - if (udc->transceiver) { - otg_set_peripheral(udc->transceiver, &udc->gadget); - otg_put_transceiver(udc->transceiver); - } - - err("error = %i", retval); -remove_dbg: -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - dbg_remove_files(&udc->gadget.dev); -#endif -unreg_device: - device_unregister(&udc->gadget.dev); -put_transceiver: - if (udc->transceiver) - otg_put_transceiver(udc->transceiver); -free_udc: - kfree(udc); - _udc = NULL; - return retval; -} - -/** - * udc_remove: parent remove must call this to remove UDC - * - * No interrupts active, the IRQ has been released - */ -static void udc_remove(void) -{ - struct ci13xxx *udc = _udc; - - if (udc == NULL) { - err("EINVAL"); - return; - } - usb_del_gadget_udc(&udc->gadget); - - if (udc->transceiver) { - otg_set_peripheral(udc->transceiver, &udc->gadget); - otg_put_transceiver(udc->transceiver); - } -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - dbg_remove_files(&udc->gadget.dev); -#endif - device_unregister(&udc->gadget.dev); - - kfree(udc); - _udc = NULL; -} diff --git a/drivers/usb/gadget/ci13xxx_udc.h b/drivers/usb/gadget/ci13xxx_udc.h deleted file mode 100644 index f4871e1fac5..00000000000 --- a/drivers/usb/gadget/ci13xxx_udc.h +++ /dev/null @@ -1,227 +0,0 @@ -/* - * ci13xxx_udc.h - structures, registers, and macros MIPS USB IP core - * - * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. - * - * Author: David Lopo - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Description: MIPS USB IP core family device controller - * Structures, registers and logging macros - */ - -#ifndef _CI13XXX_h_ -#define _CI13XXX_h_ - -/****************************************************************************** - * DEFINE - *****************************************************************************/ -#define CI13XXX_PAGE_SIZE 4096ul /* page size for TD's */ -#define ENDPT_MAX (32) -#define CTRL_PAYLOAD_MAX (64) -#define RX (0) /* similar to USB_DIR_OUT but can be used as an index */ -#define TX (1) /* similar to USB_DIR_IN but can be used as an index */ - -/****************************************************************************** - * STRUCTURES - *****************************************************************************/ -/* DMA layout of transfer descriptors */ -struct ci13xxx_td { - /* 0 */ - u32 next; -#define TD_TERMINATE BIT(0) -#define TD_ADDR_MASK (0xFFFFFFEUL << 5) - /* 1 */ - u32 token; -#define TD_STATUS (0x00FFUL << 0) -#define TD_STATUS_TR_ERR BIT(3) -#define TD_STATUS_DT_ERR BIT(5) -#define TD_STATUS_HALTED BIT(6) -#define TD_STATUS_ACTIVE BIT(7) -#define TD_MULTO (0x0003UL << 10) -#define TD_IOC BIT(15) -#define TD_TOTAL_BYTES (0x7FFFUL << 16) - /* 2 */ - u32 page[5]; -#define TD_CURR_OFFSET (0x0FFFUL << 0) -#define TD_FRAME_NUM (0x07FFUL << 0) -#define TD_RESERVED_MASK (0x0FFFUL << 0) -} __attribute__ ((packed)); - -/* DMA layout of queue heads */ -struct ci13xxx_qh { - /* 0 */ - u32 cap; -#define QH_IOS BIT(15) -#define QH_MAX_PKT (0x07FFUL << 16) -#define QH_ZLT BIT(29) -#define QH_MULT (0x0003UL << 30) - /* 1 */ - u32 curr; - /* 2 - 8 */ - struct ci13xxx_td td; - /* 9 */ - u32 RESERVED; - struct usb_ctrlrequest setup; -} __attribute__ ((packed)); - -/* Extension of usb_request */ -struct ci13xxx_req { - struct usb_request req; - unsigned map; - struct list_head queue; - struct ci13xxx_td *ptr; - dma_addr_t dma; - struct ci13xxx_td *zptr; - dma_addr_t zdma; -}; - -/* Extension of usb_ep */ -struct ci13xxx_ep { - struct usb_ep ep; - const struct usb_endpoint_descriptor *desc; - u8 dir; - u8 num; - u8 type; - char name[16]; - struct { - struct list_head queue; - struct ci13xxx_qh *ptr; - dma_addr_t dma; - } qh; - int wedge; - - /* global resources */ - spinlock_t *lock; - struct device *device; - struct dma_pool *td_pool; -}; - -struct ci13xxx; -struct ci13xxx_udc_driver { - const char *name; - unsigned long flags; -#define CI13XXX_REGS_SHARED BIT(0) -#define CI13XXX_REQUIRE_TRANSCEIVER BIT(1) -#define CI13XXX_PULLUP_ON_VBUS BIT(2) -#define CI13XXX_DISABLE_STREAMING BIT(3) - -#define CI13XXX_CONTROLLER_RESET_EVENT 0 -#define CI13XXX_CONTROLLER_STOPPED_EVENT 1 - void (*notify_event) (struct ci13xxx *udc, unsigned event); -}; - -/* CI13XXX UDC descriptor & global resources */ -struct ci13xxx { - spinlock_t *lock; /* ctrl register bank access */ - void __iomem *regs; /* registers address space */ - - struct dma_pool *qh_pool; /* DMA pool for queue heads */ - struct dma_pool *td_pool; /* DMA pool for transfer descs */ - struct usb_request *status; /* ep0 status request */ - - struct usb_gadget gadget; /* USB slave device */ - struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; /* extended endpts */ - u32 ep0_dir; /* ep0 direction */ -#define ep0out ci13xxx_ep[0] -#define ep0in ci13xxx_ep[hw_ep_max / 2] - u8 remote_wakeup; /* Is remote wakeup feature - enabled by the host? */ - u8 suspended; /* suspended by the host */ - u8 test_mode; /* the selected test mode */ - - struct usb_gadget_driver *driver; /* 3rd party gadget driver */ - struct ci13xxx_udc_driver *udc_driver; /* device controller driver */ - int vbus_active; /* is VBUS active */ - struct otg_transceiver *transceiver; /* Transceiver struct */ -}; - -/****************************************************************************** - * REGISTERS - *****************************************************************************/ -/* register size */ -#define REG_BITS (32) - -/* HCCPARAMS */ -#define HCCPARAMS_LEN BIT(17) - -/* DCCPARAMS */ -#define DCCPARAMS_DEN (0x1F << 0) -#define DCCPARAMS_DC BIT(7) - -/* TESTMODE */ -#define TESTMODE_FORCE BIT(0) - -/* USBCMD */ -#define USBCMD_RS BIT(0) -#define USBCMD_RST BIT(1) -#define USBCMD_SUTW BIT(13) -#define USBCMD_ATDTW BIT(14) - -/* USBSTS & USBINTR */ -#define USBi_UI BIT(0) -#define USBi_UEI BIT(1) -#define USBi_PCI BIT(2) -#define USBi_URI BIT(6) -#define USBi_SLI BIT(8) - -/* DEVICEADDR */ -#define DEVICEADDR_USBADRA BIT(24) -#define DEVICEADDR_USBADR (0x7FUL << 25) - -/* PORTSC */ -#define PORTSC_FPR BIT(6) -#define PORTSC_SUSP BIT(7) -#define PORTSC_HSP BIT(9) -#define PORTSC_PTC (0x0FUL << 16) - -/* DEVLC */ -#define DEVLC_PSPD (0x03UL << 25) -#define DEVLC_PSPD_HS (0x02UL << 25) - -/* USBMODE */ -#define USBMODE_CM (0x03UL << 0) -#define USBMODE_CM_IDLE (0x00UL << 0) -#define USBMODE_CM_DEVICE (0x02UL << 0) -#define USBMODE_CM_HOST (0x03UL << 0) -#define USBMODE_SLOM BIT(3) -#define USBMODE_SDIS BIT(4) - -/* ENDPTCTRL */ -#define ENDPTCTRL_RXS BIT(0) -#define ENDPTCTRL_RXT (0x03UL << 2) -#define ENDPTCTRL_RXR BIT(6) /* reserved for port 0 */ -#define ENDPTCTRL_RXE BIT(7) -#define ENDPTCTRL_TXS BIT(16) -#define ENDPTCTRL_TXT (0x03UL << 18) -#define ENDPTCTRL_TXR BIT(22) /* reserved for port 0 */ -#define ENDPTCTRL_TXE BIT(23) - -/****************************************************************************** - * LOGGING - *****************************************************************************/ -#define ci13xxx_printk(level, format, args...) \ -do { \ - if (_udc == NULL) \ - printk(level "[%s] " format "\n", __func__, ## args); \ - else \ - dev_printk(level, _udc->gadget.dev.parent, \ - "[%s] " format "\n", __func__, ## args); \ -} while (0) - -#define err(format, args...) ci13xxx_printk(KERN_ERR, format, ## args) -#define warn(format, args...) ci13xxx_printk(KERN_WARNING, format, ## args) -#define info(format, args...) ci13xxx_printk(KERN_INFO, format, ## args) - -#ifdef TRACE -#define trace(format, args...) ci13xxx_printk(KERN_DEBUG, format, ## args) -#define dbg_trace(format, args...) dev_dbg(dev, format, ##args) -#else -#define trace(format, args...) do {} while (0) -#define dbg_trace(format, args...) do {} while (0) -#endif - -#endif /* _CI13XXX_h_ */ diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index baaebf2830f..f8015193205 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -21,6 +21,24 @@ #include <linux/usb/composite.h> #include <asm/unaligned.h> +#include "u_os_desc.h" + +/** + * struct usb_os_string - represents OS String to be reported by a gadget + * @bLength: total length of the entire descritor, always 0x12 + * @bDescriptorType: USB_DT_STRING + * @qwSignature: the OS String proper + * @bMS_VendorCode: code used by the host for subsequent requests + * @bPad: not used, must be zero + */ +struct usb_os_string { + __u8 bLength; + __u8 bDescriptorType; + __u8 qwSignature[OS_STRING_QW_SIGN_LEN]; + __u8 bMS_VendorCode; + __u8 bPad; +} __packed; + /* * The code in this file is utility code, used to build a gadget driver * from one or more "function" drivers, one or more "configuration" @@ -28,44 +46,12 @@ * with the relevant device-wide data. */ -/* big enough to hold our biggest descriptor */ -#define USB_BUFSIZ 1024 - -static struct usb_composite_driver *composite; -static int (*composite_gadget_bind)(struct usb_composite_dev *cdev); - -/* Some systems will need runtime overrides for the product identifiers - * published in the device descriptor, either numbers or strings or both. - * String parameters are in UTF-8 (superset of ASCII's 7 bit characters). - */ - -static ushort idVendor; -module_param(idVendor, ushort, 0); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort idProduct; -module_param(idProduct, ushort, 0); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort bcdDevice; -module_param(bcdDevice, ushort, 0); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - -static char *iManufacturer; -module_param(iManufacturer, charp, 0); -MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); - -static char *iProduct; -module_param(iProduct, charp, 0); -MODULE_PARM_DESC(iProduct, "USB Product string"); - -static char *iSerialNumber; -module_param(iSerialNumber, charp, 0); -MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); - -static char composite_manufacturer[50]; +static struct usb_gadget_strings **get_containers_gs( + struct usb_gadget_string_container *uc) +{ + return (struct usb_gadget_strings **)uc->stash; +} -/*-------------------------------------------------------------------------*/ /** * next_ep_desc() - advance to the next EP descriptor * @t: currect pointer within descriptor array @@ -117,6 +103,7 @@ int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, struct usb_ep *_ep) { + struct usb_composite_dev *cdev = get_gadget_data(g); struct usb_endpoint_descriptor *chosen_desc = NULL; struct usb_descriptor_header **speed_desc = NULL; @@ -144,7 +131,7 @@ int config_ep_by_speed(struct usb_gadget *g, } /* else: fall through */ default: - speed_desc = f->descriptors; + speed_desc = f->fs_descriptors; } /* find descriptors */ for_each_ep_desc(speed_desc, d_spd) { @@ -180,15 +167,18 @@ ep_found: _ep->mult = comp_desc->bmAttributes & 0x3; case USB_ENDPOINT_XFER_BULK: case USB_ENDPOINT_XFER_INT: - _ep->maxburst = comp_desc->bMaxBurst; + _ep->maxburst = comp_desc->bMaxBurst + 1; break; default: - /* Do nothing for control endpoints */ + if (comp_desc->bMaxBurst != 0) + ERROR(cdev, "ep0 bMaxBurst must be 0\n"); + _ep->maxburst = 1; break; } } return 0; } +EXPORT_SYMBOL_GPL(config_ep_by_speed); /** * usb_add_function() - add a function to a configuration @@ -234,7 +224,7 @@ int usb_add_function(struct usb_configuration *config, * as full speed ... it's the function drivers that will need * to avoid bulk and ISO transfers. */ - if (!config->fullspeed && function->descriptors) + if (!config->fullspeed && function->fs_descriptors) config->fullspeed = true; if (!config->highspeed && function->hs_descriptors) config->highspeed = true; @@ -247,6 +237,19 @@ done: function->name, function, value); return value; } +EXPORT_SYMBOL_GPL(usb_add_function); + +void usb_remove_function(struct usb_configuration *c, struct usb_function *f) +{ + if (f->disable) + f->disable(f); + + bitmap_zero(f->endpoints, 32); + list_del(&f->list); + if (f->unbind) + f->unbind(c, f); +} +EXPORT_SYMBOL_GPL(usb_remove_function); /** * usb_function_deactivate - prevent function and gadget enumeration @@ -283,6 +286,7 @@ int usb_function_deactivate(struct usb_function *function) spin_unlock_irqrestore(&cdev->lock, flags); return status; } +EXPORT_SYMBOL_GPL(usb_function_deactivate); /** * usb_function_activate - allow function and gadget enumeration @@ -297,9 +301,10 @@ int usb_function_deactivate(struct usb_function *function) int usb_function_activate(struct usb_function *function) { struct usb_composite_dev *cdev = function->config->cdev; + unsigned long flags; int status = 0; - spin_lock(&cdev->lock); + spin_lock_irqsave(&cdev->lock, flags); if (WARN_ON(cdev->deactivations == 0)) status = -EINVAL; @@ -309,9 +314,10 @@ int usb_function_activate(struct usb_function *function) status = usb_gadget_connect(cdev->gadget); } - spin_unlock(&cdev->lock); + spin_unlock_irqrestore(&cdev->lock, flags); return status; } +EXPORT_SYMBOL_GPL(usb_function_activate); /** * usb_interface_id() - allocate an unused interface ID @@ -348,16 +354,37 @@ int usb_interface_id(struct usb_configuration *config, } return -ENODEV; } +EXPORT_SYMBOL_GPL(usb_interface_id); + +static u8 encode_bMaxPower(enum usb_device_speed speed, + struct usb_configuration *c) +{ + unsigned val; + + if (c->MaxPower) + val = c->MaxPower; + else + val = CONFIG_USB_GADGET_VBUS_DRAW; + if (!val) + return 0; + switch (speed) { + case USB_SPEED_SUPER: + return DIV_ROUND_UP(val, 8); + default: + return DIV_ROUND_UP(val, 2); + } +} static int config_buf(struct usb_configuration *config, enum usb_device_speed speed, void *buf, u8 type) { struct usb_config_descriptor *c = buf; void *next = buf + USB_DT_CONFIG_SIZE; - int len = USB_BUFSIZ - USB_DT_CONFIG_SIZE; + int len; struct usb_function *f; int status; + len = USB_COMP_EP0_BUFSIZ - USB_DT_CONFIG_SIZE; /* write the config descriptor */ c = buf; c->bLength = USB_DT_CONFIG_SIZE; @@ -367,7 +394,7 @@ static int config_buf(struct usb_configuration *config, c->bConfigurationValue = config->bConfigurationValue; c->iConfiguration = config->iConfiguration; c->bmAttributes = USB_CONFIG_ATT_ONE | config->bmAttributes; - c->bMaxPower = config->bMaxPower ? : (CONFIG_USB_GADGET_VBUS_DRAW / 2); + c->bMaxPower = encode_bMaxPower(speed, config); /* There may be e.g. OTG descriptors */ if (config->descriptors) { @@ -391,7 +418,7 @@ static int config_buf(struct usb_configuration *config, descriptors = f->hs_descriptors; break; default: - descriptors = f->descriptors; + descriptors = f->fs_descriptors; } if (!descriptors) @@ -413,6 +440,7 @@ static int config_desc(struct usb_composite_dev *cdev, unsigned w_value) { struct usb_gadget *gadget = cdev->gadget; struct usb_configuration *c; + struct list_head *pos; u8 type = w_value >> 8; enum usb_device_speed speed = USB_SPEED_UNKNOWN; @@ -431,7 +459,20 @@ static int config_desc(struct usb_composite_dev *cdev, unsigned w_value) /* This is a lookup by config *INDEX* */ w_value &= 0xff; - list_for_each_entry(c, &cdev->configs, list) { + + pos = &cdev->configs; + c = cdev->os_desc_config; + if (c) + goto check_config; + + while ((pos = pos->next) != &cdev->configs) { + c = list_entry(pos, typeof(*c), list); + + /* skip OS Descriptors config which is handled separately */ + if (c == cdev->os_desc_config) + continue; + +check_config: /* ignore configs that won't work at this speed */ switch (speed) { case USB_SPEED_SUPER: @@ -584,6 +625,7 @@ static void reset_config(struct usb_composite_dev *cdev) bitmap_zero(f->endpoints, 32); } cdev->config = NULL; + cdev->delayed_status = 0; } static int set_config(struct usb_composite_dev *cdev, @@ -624,6 +666,7 @@ static int set_config(struct usb_composite_dev *cdev, if (!c) goto done; + usb_gadget_set_state(gadget, USB_STATE_CONFIGURED); cdev->config = c; /* Initialize all interfaces by setting them to altsetting zero. */ @@ -648,7 +691,7 @@ static int set_config(struct usb_composite_dev *cdev, descriptors = f->hs_descriptors; break; default: - descriptors = f->descriptors; + descriptors = f->fs_descriptors; } for (; *descriptors; ++descriptors) { @@ -684,7 +727,7 @@ static int set_config(struct usb_composite_dev *cdev, } /* when we return, be sure our power usage is valid */ - power = c->bMaxPower ? (2 * c->bMaxPower) : CONFIG_USB_GADGET_VBUS_DRAW; + power = c->MaxPower ? c->MaxPower : CONFIG_USB_GADGET_VBUS_DRAW; done: usb_gadget_vbus_draw(gadget, power); if (result >= 0 && cdev->delayed_status) @@ -692,6 +735,31 @@ done: return result; } +int usb_add_config_only(struct usb_composite_dev *cdev, + struct usb_configuration *config) +{ + struct usb_configuration *c; + + if (!config->bConfigurationValue) + return -EINVAL; + + /* Prevent duplicate configuration identifiers */ + list_for_each_entry(c, &cdev->configs, list) { + if (c->bConfigurationValue == config->bConfigurationValue) + return -EBUSY; + } + + config->cdev = cdev; + list_add_tail(&config->list, &cdev->configs); + + INIT_LIST_HEAD(&config->functions); + config->next_interface_id = 0; + memset(config->interface, 0, sizeof(config->interface)); + + return 0; +} +EXPORT_SYMBOL_GPL(usb_add_config_only); + /** * usb_add_config() - add a configuration to a device. * @cdev: wraps the USB gadget @@ -712,31 +780,33 @@ int usb_add_config(struct usb_composite_dev *cdev, int (*bind)(struct usb_configuration *)) { int status = -EINVAL; - struct usb_configuration *c; + + if (!bind) + goto done; DBG(cdev, "adding config #%u '%s'/%p\n", config->bConfigurationValue, config->label, config); - if (!config->bConfigurationValue || !bind) + status = usb_add_config_only(cdev, config); + if (status) goto done; - /* Prevent duplicate configuration identifiers */ - list_for_each_entry(c, &cdev->configs, list) { - if (c->bConfigurationValue == config->bConfigurationValue) { - status = -EBUSY; - goto done; - } - } - - config->cdev = cdev; - list_add_tail(&config->list, &cdev->configs); - - INIT_LIST_HEAD(&config->functions); - config->next_interface_id = 0; - status = bind(config); if (status < 0) { + while (!list_empty(&config->functions)) { + struct usb_function *f; + + f = list_first_entry(&config->functions, + struct usb_function, list); + list_del(&f->list); + if (f->unbind) { + DBG(cdev, "unbind function '%s'/%p\n", + f->name, f); + f->unbind(config, f); + /* may free memory for "f" */ + } + } list_del(&config->list); config->cdev = NULL; } else { @@ -773,6 +843,54 @@ done: config->bConfigurationValue, status); return status; } +EXPORT_SYMBOL_GPL(usb_add_config); + +static void remove_config(struct usb_composite_dev *cdev, + struct usb_configuration *config) +{ + while (!list_empty(&config->functions)) { + struct usb_function *f; + + f = list_first_entry(&config->functions, + struct usb_function, list); + list_del(&f->list); + if (f->unbind) { + DBG(cdev, "unbind function '%s'/%p\n", f->name, f); + f->unbind(config, f); + /* may free memory for "f" */ + } + } + list_del(&config->list); + if (config->unbind) { + DBG(cdev, "unbind config '%s'/%p\n", config->label, config); + config->unbind(config); + /* may free memory for "c" */ + } +} + +/** + * usb_remove_config() - remove a configuration from a device. + * @cdev: wraps the USB gadget + * @config: the configuration + * + * Drivers must call usb_gadget_disconnect before calling this function + * to disconnect the device from the host and make sure the host will not + * try to enumerate the device while we are changing the config list. + */ +void usb_remove_config(struct usb_composite_dev *cdev, + struct usb_configuration *config) +{ + unsigned long flags; + + spin_lock_irqsave(&cdev->lock, flags); + + if (cdev->config == config) + reset_config(cdev); + + spin_unlock_irqrestore(&cdev->lock, flags); + + remove_config(cdev, config); +} /*-------------------------------------------------------------------------*/ @@ -785,7 +903,7 @@ done: static void collect_langs(struct usb_gadget_strings **sp, __le16 *buf) { const struct usb_gadget_strings *s; - u16 language; + __le16 language; __le16 *tmp; while (*sp) { @@ -825,10 +943,11 @@ static int lookup_string( static int get_string(struct usb_composite_dev *cdev, void *buf, u16 language, int id) { + struct usb_composite_driver *composite = cdev->driver; + struct usb_gadget_string_container *uc; struct usb_configuration *c; struct usb_function *f; int len; - const char *str; /* Yes, not only is USB's I18N support probably more than most * folk will ever care about ... also, it's all supported here. @@ -858,6 +977,12 @@ static int get_string(struct usb_composite_dev *cdev, collect_langs(sp, s->wData); } } + list_for_each_entry(uc, &cdev->gstrings, list) { + struct usb_gadget_strings **sp; + + sp = get_containers_gs(uc); + collect_langs(sp, s->wData); + } for (len = 0; len <= 126 && s->wData[len]; len++) continue; @@ -868,24 +993,26 @@ static int get_string(struct usb_composite_dev *cdev, return s->bLength; } - /* Otherwise, look up and return a specified string. First - * check if the string has not been overridden. - */ - if (cdev->manufacturer_override == id) - str = iManufacturer ?: composite->iManufacturer ?: - composite_manufacturer; - else if (cdev->product_override == id) - str = iProduct ?: composite->iProduct; - else if (cdev->serial_override == id) - str = iSerialNumber; - else - str = NULL; - if (str) { - struct usb_gadget_strings strings = { - .language = language, - .strings = &(struct usb_string) { 0xff, str } - }; - return usb_gadget_get_string(&strings, 0xff, buf); + if (cdev->use_os_string && language == 0 && id == OS_STRING_IDX) { + struct usb_os_string *b = buf; + b->bLength = sizeof(*b); + b->bDescriptorType = USB_DT_STRING; + compiletime_assert( + sizeof(b->qwSignature) == sizeof(cdev->qw_sign), + "qwSignature size must be equal to qw_sign"); + memcpy(&b->qwSignature, cdev->qw_sign, sizeof(b->qwSignature)); + b->bMS_VendorCode = cdev->b_vendor_code; + b->bPad = 0; + return sizeof(*b); + } + + list_for_each_entry(uc, &cdev->gstrings, list) { + struct usb_gadget_strings **sp; + + sp = get_containers_gs(uc); + len = lookup_string(sp, buf, language, id); + if (len > 0) + return len; } /* String IDs are device-scoped, so we look up each string @@ -939,6 +1066,7 @@ int usb_string_id(struct usb_composite_dev *cdev) } return -ENODEV; } +EXPORT_SYMBOL_GPL(usb_string_id); /** * usb_string_ids() - allocate unused string IDs in batch @@ -970,6 +1098,120 @@ int usb_string_ids_tab(struct usb_composite_dev *cdev, struct usb_string *str) return 0; } +EXPORT_SYMBOL_GPL(usb_string_ids_tab); + +static struct usb_gadget_string_container *copy_gadget_strings( + struct usb_gadget_strings **sp, unsigned n_gstrings, + unsigned n_strings) +{ + struct usb_gadget_string_container *uc; + struct usb_gadget_strings **gs_array; + struct usb_gadget_strings *gs; + struct usb_string *s; + unsigned mem; + unsigned n_gs; + unsigned n_s; + void *stash; + + mem = sizeof(*uc); + mem += sizeof(void *) * (n_gstrings + 1); + mem += sizeof(struct usb_gadget_strings) * n_gstrings; + mem += sizeof(struct usb_string) * (n_strings + 1) * (n_gstrings); + uc = kmalloc(mem, GFP_KERNEL); + if (!uc) + return ERR_PTR(-ENOMEM); + gs_array = get_containers_gs(uc); + stash = uc->stash; + stash += sizeof(void *) * (n_gstrings + 1); + for (n_gs = 0; n_gs < n_gstrings; n_gs++) { + struct usb_string *org_s; + + gs_array[n_gs] = stash; + gs = gs_array[n_gs]; + stash += sizeof(struct usb_gadget_strings); + gs->language = sp[n_gs]->language; + gs->strings = stash; + org_s = sp[n_gs]->strings; + + for (n_s = 0; n_s < n_strings; n_s++) { + s = stash; + stash += sizeof(struct usb_string); + if (org_s->s) + s->s = org_s->s; + else + s->s = ""; + org_s++; + } + s = stash; + s->s = NULL; + stash += sizeof(struct usb_string); + + } + gs_array[n_gs] = NULL; + return uc; +} + +/** + * usb_gstrings_attach() - attach gadget strings to a cdev and assign ids + * @cdev: the device whose string descriptor IDs are being allocated + * and attached. + * @sp: an array of usb_gadget_strings to attach. + * @n_strings: number of entries in each usb_strings array (sp[]->strings) + * + * This function will create a deep copy of usb_gadget_strings and usb_string + * and attach it to the cdev. The actual string (usb_string.s) will not be + * copied but only a referenced will be made. The struct usb_gadget_strings + * array may contain multiple languges and should be NULL terminated. + * The ->language pointer of each struct usb_gadget_strings has to contain the + * same amount of entries. + * For instance: sp[0] is en-US, sp[1] is es-ES. It is expected that the first + * usb_string entry of es-ES containts the translation of the first usb_string + * entry of en-US. Therefore both entries become the same id assign. + */ +struct usb_string *usb_gstrings_attach(struct usb_composite_dev *cdev, + struct usb_gadget_strings **sp, unsigned n_strings) +{ + struct usb_gadget_string_container *uc; + struct usb_gadget_strings **n_gs; + unsigned n_gstrings = 0; + unsigned i; + int ret; + + for (i = 0; sp[i]; i++) + n_gstrings++; + + if (!n_gstrings) + return ERR_PTR(-EINVAL); + + uc = copy_gadget_strings(sp, n_gstrings, n_strings); + if (IS_ERR(uc)) + return ERR_CAST(uc); + + n_gs = get_containers_gs(uc); + ret = usb_string_ids_tab(cdev, n_gs[0]->strings); + if (ret) + goto err; + + for (i = 1; i < n_gstrings; i++) { + struct usb_string *m_s; + struct usb_string *s; + unsigned n; + + m_s = n_gs[0]->strings; + s = n_gs[i]->strings; + for (n = 0; n < n_strings; n++) { + s->id = m_s->id; + s++; + m_s++; + } + } + list_add_tail(&uc->list, &cdev->gstrings); + return n_gs[0]->strings; +err: + kfree(uc); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(usb_gstrings_attach); /** * usb_string_ids_n() - allocate unused string IDs in batch @@ -998,7 +1240,7 @@ int usb_string_ids_n(struct usb_composite_dev *c, unsigned n) c->next_string_id += n; return next + 1; } - +EXPORT_SYMBOL_GPL(usb_string_ids_n); /*-------------------------------------------------------------------------*/ @@ -1010,6 +1252,156 @@ static void composite_setup_complete(struct usb_ep *ep, struct usb_request *req) req->status, req->actual, req->length); } +static int count_ext_compat(struct usb_configuration *c) +{ + int i, res; + + res = 0; + for (i = 0; i < c->next_interface_id; ++i) { + struct usb_function *f; + int j; + + f = c->interface[i]; + for (j = 0; j < f->os_desc_n; ++j) { + struct usb_os_desc *d; + + if (i != f->os_desc_table[j].if_id) + continue; + d = f->os_desc_table[j].os_desc; + if (d && d->ext_compat_id) + ++res; + } + } + BUG_ON(res > 255); + return res; +} + +static void fill_ext_compat(struct usb_configuration *c, u8 *buf) +{ + int i, count; + + count = 16; + for (i = 0; i < c->next_interface_id; ++i) { + struct usb_function *f; + int j; + + f = c->interface[i]; + for (j = 0; j < f->os_desc_n; ++j) { + struct usb_os_desc *d; + + if (i != f->os_desc_table[j].if_id) + continue; + d = f->os_desc_table[j].os_desc; + if (d && d->ext_compat_id) { + *buf++ = i; + *buf++ = 0x01; + memcpy(buf, d->ext_compat_id, 16); + buf += 22; + } else { + ++buf; + *buf = 0x01; + buf += 23; + } + count += 24; + if (count >= 4096) + return; + } + } +} + +static int count_ext_prop(struct usb_configuration *c, int interface) +{ + struct usb_function *f; + int j; + + f = c->interface[interface]; + for (j = 0; j < f->os_desc_n; ++j) { + struct usb_os_desc *d; + + if (interface != f->os_desc_table[j].if_id) + continue; + d = f->os_desc_table[j].os_desc; + if (d && d->ext_compat_id) + return d->ext_prop_count; + } + return 0; +} + +static int len_ext_prop(struct usb_configuration *c, int interface) +{ + struct usb_function *f; + struct usb_os_desc *d; + int j, res; + + res = 10; /* header length */ + f = c->interface[interface]; + for (j = 0; j < f->os_desc_n; ++j) { + if (interface != f->os_desc_table[j].if_id) + continue; + d = f->os_desc_table[j].os_desc; + if (d) + return min(res + d->ext_prop_len, 4096); + } + return res; +} + +static int fill_ext_prop(struct usb_configuration *c, int interface, u8 *buf) +{ + struct usb_function *f; + struct usb_os_desc *d; + struct usb_os_desc_ext_prop *ext_prop; + int j, count, n, ret; + u8 *start = buf; + + f = c->interface[interface]; + for (j = 0; j < f->os_desc_n; ++j) { + if (interface != f->os_desc_table[j].if_id) + continue; + d = f->os_desc_table[j].os_desc; + if (d) + list_for_each_entry(ext_prop, &d->ext_prop, entry) { + /* 4kB minus header length */ + n = buf - start; + if (n >= 4086) + return 0; + + count = ext_prop->data_len + + ext_prop->name_len + 14; + if (count > 4086 - n) + return -EINVAL; + usb_ext_prop_put_size(buf, count); + usb_ext_prop_put_type(buf, ext_prop->type); + ret = usb_ext_prop_put_name(buf, ext_prop->name, + ext_prop->name_len); + if (ret < 0) + return ret; + switch (ext_prop->type) { + case USB_EXT_PROP_UNICODE: + case USB_EXT_PROP_UNICODE_ENV: + case USB_EXT_PROP_UNICODE_LINK: + usb_ext_prop_put_unicode(buf, ret, + ext_prop->data, + ext_prop->data_len); + break; + case USB_EXT_PROP_BINARY: + usb_ext_prop_put_binary(buf, ret, + ext_prop->data, + ext_prop->data_len); + break; + case USB_EXT_PROP_LE32: + /* not implemented */ + case USB_EXT_PROP_BE32: + /* not implemented */ + default: + return -EINVAL; + } + buf += count; + } + } + + return 0; +} + /* * The setup() callback implements all the ep0 functionality that's * not handled lower down, in hardware or the hardware driver(like @@ -1017,7 +1409,7 @@ static void composite_setup_complete(struct usb_ep *ep, struct usb_request *req) * housekeeping for the gadget function we're implementing. Most of * the work is in config and function specific setup. */ -static int +int composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) { struct usb_composite_dev *cdev = get_gadget_data(gadget); @@ -1219,6 +1611,91 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) break; default: unknown: + /* + * OS descriptors handling + */ + if (cdev->use_os_string && cdev->os_desc_config && + (ctrl->bRequest & USB_TYPE_VENDOR) && + ctrl->bRequest == cdev->b_vendor_code) { + struct usb_request *req; + struct usb_configuration *os_desc_cfg; + u8 *buf; + int interface; + int count = 0; + + req = cdev->os_desc_req; + req->complete = composite_setup_complete; + buf = req->buf; + os_desc_cfg = cdev->os_desc_config; + memset(buf, 0, w_length); + buf[5] = 0x01; + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + if (w_index != 0x4 || (w_value >> 8)) + break; + buf[6] = w_index; + if (w_length == 0x10) { + /* Number of ext compat interfaces */ + count = count_ext_compat(os_desc_cfg); + buf[8] = count; + count *= 24; /* 24 B/ext compat desc */ + count += 16; /* header */ + put_unaligned_le32(count, buf); + value = w_length; + } else { + /* "extended compatibility ID"s */ + count = count_ext_compat(os_desc_cfg); + buf[8] = count; + count *= 24; /* 24 B/ext compat desc */ + count += 16; /* header */ + put_unaligned_le32(count, buf); + buf += 16; + fill_ext_compat(os_desc_cfg, buf); + value = w_length; + } + break; + case USB_RECIP_INTERFACE: + if (w_index != 0x5 || (w_value >> 8)) + break; + interface = w_value & 0xFF; + buf[6] = w_index; + if (w_length == 0x0A) { + count = count_ext_prop(os_desc_cfg, + interface); + put_unaligned_le16(count, buf + 8); + count = len_ext_prop(os_desc_cfg, + interface); + put_unaligned_le32(count, buf); + + value = w_length; + } else { + count = count_ext_prop(os_desc_cfg, + interface); + put_unaligned_le16(count, buf + 8); + count = len_ext_prop(os_desc_cfg, + interface); + put_unaligned_le32(count, buf); + buf += 10; + value = fill_ext_prop(os_desc_cfg, + interface, buf); + if (value < 0) + return value; + + value = w_length; + } + break; + } + req->length = value; + req->zero = value < w_length; + value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); + if (value < 0) { + DBG(cdev, "ep_queue --> %d\n", value); + req->status = 0; + composite_setup_complete(gadget->ep0, req); + } + return value; + } + VDBG(cdev, "non-core control req%02x.%02x v%04x i%04x l%d\n", ctrl->bRequestType, ctrl->bRequest, @@ -1256,8 +1733,22 @@ unknown: struct usb_configuration *c; c = cdev->config; - if (c && c->setup) + if (!c) + goto done; + + /* try current config's setup */ + if (c->setup) { value = c->setup(c, ctrl); + goto done; + } + + /* try the only function in the current config */ + if (!list_is_singular(&c->functions)) + goto done; + f = list_first_entry(&c->functions, struct usb_function, + list); + if (f->setup) + value = f->setup(f, ctrl); } goto done; @@ -1284,7 +1775,7 @@ done: return value; } -static void composite_disconnect(struct usb_gadget *gadget) +void composite_disconnect(struct usb_gadget *gadget) { struct usb_composite_dev *cdev = get_gadget_data(gadget); unsigned long flags; @@ -1295,27 +1786,24 @@ static void composite_disconnect(struct usb_gadget *gadget) spin_lock_irqsave(&cdev->lock, flags); if (cdev->config) reset_config(cdev); - if (composite->disconnect) - composite->disconnect(cdev); + if (cdev->driver->disconnect) + cdev->driver->disconnect(cdev); spin_unlock_irqrestore(&cdev->lock, flags); } /*-------------------------------------------------------------------------*/ -static ssize_t composite_show_suspended(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t suspended_show(struct device *dev, struct device_attribute *attr, + char *buf) { struct usb_gadget *gadget = dev_to_usb_gadget(dev); struct usb_composite_dev *cdev = get_gadget_data(gadget); return sprintf(buf, "%d\n", cdev->suspended); } +static DEVICE_ATTR_RO(suspended); -static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); - -static void -composite_unbind(struct usb_gadget *gadget) +static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) { struct usb_composite_dev *cdev = get_gadget_data(gadget); @@ -1328,80 +1816,85 @@ composite_unbind(struct usb_gadget *gadget) while (!list_empty(&cdev->configs)) { struct usb_configuration *c; - c = list_first_entry(&cdev->configs, struct usb_configuration, list); - while (!list_empty(&c->functions)) { - struct usb_function *f; - - f = list_first_entry(&c->functions, - struct usb_function, list); - list_del(&f->list); - if (f->unbind) { - DBG(cdev, "unbind function '%s'/%p\n", - f->name, f); - f->unbind(c, f); - /* may free memory for "f" */ - } - } - list_del(&c->list); - if (c->unbind) { - DBG(cdev, "unbind config '%s'/%p\n", c->label, c); - c->unbind(c); - /* may free memory for "c" */ - } + remove_config(cdev, c); } - if (composite->unbind) - composite->unbind(cdev); + if (cdev->driver->unbind && unbind_driver) + cdev->driver->unbind(cdev); - if (cdev->req) { - kfree(cdev->req->buf); - usb_ep_free_request(gadget->ep0, cdev->req); - } - device_remove_file(&gadget->dev, &dev_attr_suspended); + composite_dev_cleanup(cdev); + + kfree(cdev->def_manufacturer); kfree(cdev); set_gadget_data(gadget, NULL); - composite = NULL; } -static u8 override_id(struct usb_composite_dev *cdev, u8 *desc) +static void composite_unbind(struct usb_gadget *gadget) { - if (!*desc) { - int ret = usb_string_id(cdev); - if (unlikely(ret < 0)) - WARNING(cdev, "failed to override string ID\n"); - else - *desc = ret; - } - - return *desc; + __composite_unbind(gadget, true); } -static int composite_bind(struct usb_gadget *gadget) +static void update_unchanged_dev_desc(struct usb_device_descriptor *new, + const struct usb_device_descriptor *old) { - struct usb_composite_dev *cdev; - int status = -ENOMEM; + __le16 idVendor; + __le16 idProduct; + __le16 bcdDevice; + u8 iSerialNumber; + u8 iManufacturer; + u8 iProduct; - cdev = kzalloc(sizeof *cdev, GFP_KERNEL); - if (!cdev) - return status; + /* + * these variables may have been set in + * usb_composite_overwrite_options() + */ + idVendor = new->idVendor; + idProduct = new->idProduct; + bcdDevice = new->bcdDevice; + iSerialNumber = new->iSerialNumber; + iManufacturer = new->iManufacturer; + iProduct = new->iProduct; + + *new = *old; + if (idVendor) + new->idVendor = idVendor; + if (idProduct) + new->idProduct = idProduct; + if (bcdDevice) + new->bcdDevice = bcdDevice; + else + new->bcdDevice = cpu_to_le16(get_default_bcdDevice()); + if (iSerialNumber) + new->iSerialNumber = iSerialNumber; + if (iManufacturer) + new->iManufacturer = iManufacturer; + if (iProduct) + new->iProduct = iProduct; +} - spin_lock_init(&cdev->lock); - cdev->gadget = gadget; - set_gadget_data(gadget, cdev); - INIT_LIST_HEAD(&cdev->configs); +int composite_dev_prepare(struct usb_composite_driver *composite, + struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int ret = -ENOMEM; /* preallocate control response and buffer */ cdev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); if (!cdev->req) - goto fail; - cdev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL); + return -ENOMEM; + + cdev->req->buf = kmalloc(USB_COMP_EP0_BUFSIZ, GFP_KERNEL); if (!cdev->req->buf) goto fail; + + ret = device_create_file(&gadget->dev, &dev_attr_suspended); + if (ret) + goto fail_dev; + cdev->req->complete = composite_setup_complete; gadget->ep0->driver_data = cdev; - cdev->bufsiz = USB_BUFSIZ; cdev->driver = composite; /* @@ -1416,63 +1909,105 @@ static int composite_bind(struct usb_gadget *gadget) * we force endpoints to start unassigned; few controller * drivers will zero ep->driver_data. */ - usb_ep_autoconfig_reset(cdev->gadget); + usb_ep_autoconfig_reset(gadget); + return 0; +fail_dev: + kfree(cdev->req->buf); +fail: + usb_ep_free_request(gadget->ep0, cdev->req); + cdev->req = NULL; + return ret; +} + +int composite_os_desc_req_prepare(struct usb_composite_dev *cdev, + struct usb_ep *ep0) +{ + int ret = 0; + + cdev->os_desc_req = usb_ep_alloc_request(ep0, GFP_KERNEL); + if (!cdev->os_desc_req) { + ret = PTR_ERR(cdev->os_desc_req); + goto end; + } + + /* OS feature descriptor length <= 4kB */ + cdev->os_desc_req->buf = kmalloc(4096, GFP_KERNEL); + if (!cdev->os_desc_req->buf) { + ret = PTR_ERR(cdev->os_desc_req->buf); + kfree(cdev->os_desc_req); + goto end; + } + cdev->os_desc_req->complete = composite_setup_complete; +end: + return ret; +} + +void composite_dev_cleanup(struct usb_composite_dev *cdev) +{ + struct usb_gadget_string_container *uc, *tmp; + + list_for_each_entry_safe(uc, tmp, &cdev->gstrings, list) { + list_del(&uc->list); + kfree(uc); + } + if (cdev->os_desc_req) { + kfree(cdev->os_desc_req->buf); + usb_ep_free_request(cdev->gadget->ep0, cdev->os_desc_req); + } + if (cdev->req) { + kfree(cdev->req->buf); + usb_ep_free_request(cdev->gadget->ep0, cdev->req); + } + cdev->next_string_id = 0; + device_remove_file(&cdev->gadget->dev, &dev_attr_suspended); +} + +static int composite_bind(struct usb_gadget *gadget, + struct usb_gadget_driver *gdriver) +{ + struct usb_composite_dev *cdev; + struct usb_composite_driver *composite = to_cdriver(gdriver); + int status = -ENOMEM; + + cdev = kzalloc(sizeof *cdev, GFP_KERNEL); + if (!cdev) + return status; + + spin_lock_init(&cdev->lock); + cdev->gadget = gadget; + set_gadget_data(gadget, cdev); + INIT_LIST_HEAD(&cdev->configs); + INIT_LIST_HEAD(&cdev->gstrings); + + status = composite_dev_prepare(composite, cdev); + if (status) + goto fail; /* composite gadget needs to assign strings for whole device (like * serial number), register function drivers, potentially update * power state and consumption, etc */ - status = composite_gadget_bind(cdev); + status = composite->bind(cdev); if (status < 0) goto fail; - cdev->desc = *composite->dev; - - /* standardized runtime overrides for device ID data */ - if (idVendor) - cdev->desc.idVendor = cpu_to_le16(idVendor); - if (idProduct) - cdev->desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); - - /* string overrides */ - if (iManufacturer || !cdev->desc.iManufacturer) { - if (!iManufacturer && !composite->iManufacturer && - !*composite_manufacturer) - snprintf(composite_manufacturer, - sizeof composite_manufacturer, - "%s %s with %s", - init_utsname()->sysname, - init_utsname()->release, - gadget->name); - - cdev->manufacturer_override = - override_id(cdev, &cdev->desc.iManufacturer); + if (cdev->use_os_string) { + status = composite_os_desc_req_prepare(cdev, gadget->ep0); + if (status) + goto fail; } - if (iProduct || (!cdev->desc.iProduct && composite->iProduct)) - cdev->product_override = - override_id(cdev, &cdev->desc.iProduct); - - if (iSerialNumber) - cdev->serial_override = - override_id(cdev, &cdev->desc.iSerialNumber); + update_unchanged_dev_desc(&cdev->desc, composite->dev); /* has userspace failed to provide a serial number? */ if (composite->needs_serial && !cdev->desc.iSerialNumber) WARNING(cdev, "userspace failed to provide iSerialNumber\n"); - /* finish up */ - status = device_create_file(&gadget->dev, &dev_attr_suspended); - if (status) - goto fail; - INFO(cdev, "%s ready\n", composite->name); return 0; fail: - composite_unbind(gadget); + __composite_unbind(gadget, false); return status; } @@ -1494,8 +2029,8 @@ composite_suspend(struct usb_gadget *gadget) f->suspend(f); } } - if (composite->suspend) - composite->suspend(cdev); + if (cdev->driver->suspend) + cdev->driver->suspend(cdev); cdev->suspended = 1; @@ -1507,24 +2042,24 @@ composite_resume(struct usb_gadget *gadget) { struct usb_composite_dev *cdev = get_gadget_data(gadget); struct usb_function *f; - u8 maxpower; + u16 maxpower; /* REVISIT: should we have config level * suspend/resume callbacks? */ DBG(cdev, "resume\n"); - if (composite->resume) - composite->resume(cdev); + if (cdev->driver->resume) + cdev->driver->resume(cdev); if (cdev->config) { list_for_each_entry(f, &cdev->config->functions, list) { if (f->resume) f->resume(f); } - maxpower = cdev->config->bMaxPower; + maxpower = cdev->config->MaxPower; usb_gadget_vbus_draw(gadget, maxpower ? - (2 * maxpower) : CONFIG_USB_GADGET_VBUS_DRAW); + maxpower : CONFIG_USB_GADGET_VBUS_DRAW); } cdev->suspended = 0; @@ -1532,13 +2067,8 @@ composite_resume(struct usb_gadget *gadget) /*-------------------------------------------------------------------------*/ -static struct usb_gadget_driver composite_driver = { -#ifdef CONFIG_USB_GADGET_SUPERSPEED - .max_speed = USB_SPEED_SUPER, -#else - .max_speed = USB_SPEED_HIGH, -#endif - +static const struct usb_gadget_driver composite_driver_template = { + .bind = composite_bind, .unbind = composite_unbind, .setup = composite_setup, @@ -1555,10 +2085,7 @@ static struct usb_gadget_driver composite_driver = { /** * usb_composite_probe() - register a composite driver * @driver: the driver to register - * @bind: the callback used to allocate resources that are shared across the - * whole device, such as string IDs, and add its configurations using - * @usb_add_config(). This may fail by returning a negative errno - * value; it should return zero on successful initialization. + * * Context: single threaded during gadget setup * * This function is used to register drivers using the composite driver @@ -1571,25 +2098,26 @@ static struct usb_gadget_driver composite_driver = { * while it was binding. That would usually be done in order to wait for * some userspace participation. */ -int usb_composite_probe(struct usb_composite_driver *driver, - int (*bind)(struct usb_composite_dev *cdev)) +int usb_composite_probe(struct usb_composite_driver *driver) { - if (!driver || !driver->dev || !bind || composite) + struct usb_gadget_driver *gadget_driver; + + if (!driver || !driver->dev || !driver->bind) return -EINVAL; if (!driver->name) driver->name = "composite"; - if (!driver->iProduct) - driver->iProduct = driver->name; - composite_driver.function = (char *) driver->name; - composite_driver.driver.name = driver->name; - composite_driver.max_speed = - min_t(u8, composite_driver.max_speed, driver->max_speed); - composite = driver; - composite_gadget_bind = bind; - - return usb_gadget_probe_driver(&composite_driver, composite_bind); + + driver->gadget_driver = composite_driver_template; + gadget_driver = &driver->gadget_driver; + + gadget_driver->function = (char *) driver->name; + gadget_driver->driver.name = driver->name; + gadget_driver->max_speed = driver->max_speed; + + return usb_gadget_probe_driver(gadget_driver); } +EXPORT_SYMBOL_GPL(usb_composite_probe); /** * usb_composite_unregister() - unregister a composite driver @@ -1600,10 +2128,9 @@ int usb_composite_probe(struct usb_composite_driver *driver, */ void usb_composite_unregister(struct usb_composite_driver *driver) { - if (composite != driver) - return; - usb_gadget_unregister_driver(&composite_driver); + usb_gadget_unregister_driver(&driver->gadget_driver); } +EXPORT_SYMBOL_GPL(usb_composite_unregister); /** * usb_composite_setup_continue() - Continue with the control transfer @@ -1640,4 +2167,60 @@ void usb_composite_setup_continue(struct usb_composite_dev *cdev) spin_unlock_irqrestore(&cdev->lock, flags); } +EXPORT_SYMBOL_GPL(usb_composite_setup_continue); + +static char *composite_default_mfr(struct usb_gadget *gadget) +{ + char *mfr; + int len; + + len = snprintf(NULL, 0, "%s %s with %s", init_utsname()->sysname, + init_utsname()->release, gadget->name); + len++; + mfr = kmalloc(len, GFP_KERNEL); + if (!mfr) + return NULL; + snprintf(mfr, len, "%s %s with %s", init_utsname()->sysname, + init_utsname()->release, gadget->name); + return mfr; +} + +void usb_composite_overwrite_options(struct usb_composite_dev *cdev, + struct usb_composite_overwrite *covr) +{ + struct usb_device_descriptor *desc = &cdev->desc; + struct usb_gadget_strings *gstr = cdev->driver->strings[0]; + struct usb_string *dev_str = gstr->strings; + + if (covr->idVendor) + desc->idVendor = cpu_to_le16(covr->idVendor); + + if (covr->idProduct) + desc->idProduct = cpu_to_le16(covr->idProduct); + + if (covr->bcdDevice) + desc->bcdDevice = cpu_to_le16(covr->bcdDevice); + + if (covr->serial_number) { + desc->iSerialNumber = dev_str[USB_GADGET_SERIAL_IDX].id; + dev_str[USB_GADGET_SERIAL_IDX].s = covr->serial_number; + } + if (covr->manufacturer) { + desc->iManufacturer = dev_str[USB_GADGET_MANUFACTURER_IDX].id; + dev_str[USB_GADGET_MANUFACTURER_IDX].s = covr->manufacturer; + + } else if (!strlen(dev_str[USB_GADGET_MANUFACTURER_IDX].s)) { + desc->iManufacturer = dev_str[USB_GADGET_MANUFACTURER_IDX].id; + cdev->def_manufacturer = composite_default_mfr(cdev->gadget); + dev_str[USB_GADGET_MANUFACTURER_IDX].s = cdev->def_manufacturer; + } + + if (covr->product) { + desc->iProduct = dev_str[USB_GADGET_PRODUCT_IDX].id; + dev_str[USB_GADGET_PRODUCT_IDX].s = covr->product; + } +} +EXPORT_SYMBOL_GPL(usb_composite_overwrite_options); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c index 7542a72ce51..34e12fc52c2 100644 --- a/drivers/usb/gadget/config.c +++ b/drivers/usb/gadget/config.c @@ -12,13 +12,14 @@ #include <linux/errno.h> #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/list.h> #include <linux/string.h> #include <linux/device.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> - +#include <linux/usb/composite.h> /** * usb_descriptor_fillbuf - fill buffer with descriptors @@ -53,7 +54,7 @@ usb_descriptor_fillbuf(void *buf, unsigned buflen, } return dest - (u8 *)buf; } - +EXPORT_SYMBOL_GPL(usb_descriptor_fillbuf); /** * usb_gadget_config_buf - builts a complete configuration descriptor @@ -106,6 +107,7 @@ int usb_gadget_config_buf( cp->bmAttributes |= USB_CONFIG_ATT_ONE; return len; } +EXPORT_SYMBOL_GPL(usb_gadget_config_buf); /** * usb_copy_descriptors - copy a vector of USB descriptors @@ -155,4 +157,41 @@ usb_copy_descriptors(struct usb_descriptor_header **src) return ret; } +EXPORT_SYMBOL_GPL(usb_copy_descriptors); + +int usb_assign_descriptors(struct usb_function *f, + struct usb_descriptor_header **fs, + struct usb_descriptor_header **hs, + struct usb_descriptor_header **ss) +{ + struct usb_gadget *g = f->config->cdev->gadget; + if (fs) { + f->fs_descriptors = usb_copy_descriptors(fs); + if (!f->fs_descriptors) + goto err; + } + if (hs && gadget_is_dualspeed(g)) { + f->hs_descriptors = usb_copy_descriptors(hs); + if (!f->hs_descriptors) + goto err; + } + if (ss && gadget_is_superspeed(g)) { + f->ss_descriptors = usb_copy_descriptors(ss); + if (!f->ss_descriptors) + goto err; + } + return 0; +err: + usb_free_all_descriptors(f); + return -ENOMEM; +} +EXPORT_SYMBOL_GPL(usb_assign_descriptors); + +void usb_free_all_descriptors(struct usb_function *f) +{ + usb_free_descriptors(f->fs_descriptors); + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->ss_descriptors); +} +EXPORT_SYMBOL_GPL(usb_free_all_descriptors); diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c new file mode 100644 index 00000000000..97142146eea --- /dev/null +++ b/drivers/usb/gadget/configfs.c @@ -0,0 +1,1574 @@ +#include <linux/configfs.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/device.h> +#include <linux/nls.h> +#include <linux/usb/composite.h> +#include <linux/usb/gadget_configfs.h> +#include "configfs.h" +#include "u_f.h" +#include "u_os_desc.h" + +int check_user_usb_string(const char *name, + struct usb_gadget_strings *stringtab_dev) +{ + unsigned primary_lang; + unsigned sub_lang; + u16 num; + int ret; + + ret = kstrtou16(name, 0, &num); + if (ret) + return ret; + + primary_lang = num & 0x3ff; + sub_lang = num >> 10; + + /* simple sanity check for valid langid */ + switch (primary_lang) { + case 0: + case 0x62 ... 0xfe: + case 0x100 ... 0x3ff: + return -EINVAL; + } + if (!sub_lang) + return -EINVAL; + + stringtab_dev->language = num; + return 0; +} + +#define MAX_NAME_LEN 40 +#define MAX_USB_STRING_LANGS 2 + +struct gadget_info { + struct config_group group; + struct config_group functions_group; + struct config_group configs_group; + struct config_group strings_group; + struct config_group os_desc_group; + struct config_group *default_groups[5]; + + struct mutex lock; + struct usb_gadget_strings *gstrings[MAX_USB_STRING_LANGS + 1]; + struct list_head string_list; + struct list_head available_func; + + const char *udc_name; +#ifdef CONFIG_USB_OTG + struct usb_otg_descriptor otg; +#endif + struct usb_composite_driver composite; + struct usb_composite_dev cdev; + bool use_os_desc; + char b_vendor_code; + char qw_sign[OS_STRING_QW_SIGN_LEN]; +}; + +struct config_usb_cfg { + struct config_group group; + struct config_group strings_group; + struct config_group *default_groups[2]; + struct list_head string_list; + struct usb_configuration c; + struct list_head func_list; + struct usb_gadget_strings *gstrings[MAX_USB_STRING_LANGS + 1]; +}; + +struct gadget_strings { + struct usb_gadget_strings stringtab_dev; + struct usb_string strings[USB_GADGET_FIRST_AVAIL_IDX]; + char *manufacturer; + char *product; + char *serialnumber; + + struct config_group group; + struct list_head list; +}; + +struct os_desc { + struct config_group group; +}; + +struct gadget_config_name { + struct usb_gadget_strings stringtab_dev; + struct usb_string strings; + char *configuration; + + struct config_group group; + struct list_head list; +}; + +static int usb_string_copy(const char *s, char **s_copy) +{ + int ret; + char *str; + char *copy = *s_copy; + ret = strlen(s); + if (ret > 126) + return -EOVERFLOW; + + str = kstrdup(s, GFP_KERNEL); + if (!str) + return -ENOMEM; + if (str[ret - 1] == '\n') + str[ret - 1] = '\0'; + kfree(copy); + *s_copy = str; + return 0; +} + +CONFIGFS_ATTR_STRUCT(gadget_info); +CONFIGFS_ATTR_STRUCT(config_usb_cfg); + +#define GI_DEVICE_DESC_ITEM_ATTR(name) \ + static struct gadget_info_attribute gadget_cdev_desc_##name = \ + __CONFIGFS_ATTR(name, S_IRUGO | S_IWUSR, \ + gadget_dev_desc_##name##_show, \ + gadget_dev_desc_##name##_store) + +#define GI_DEVICE_DESC_SIMPLE_R_u8(__name) \ + static ssize_t gadget_dev_desc_##__name##_show(struct gadget_info *gi, \ + char *page) \ +{ \ + return sprintf(page, "0x%02x\n", gi->cdev.desc.__name); \ +} + +#define GI_DEVICE_DESC_SIMPLE_R_u16(__name) \ + static ssize_t gadget_dev_desc_##__name##_show(struct gadget_info *gi, \ + char *page) \ +{ \ + return sprintf(page, "0x%04x\n", le16_to_cpup(&gi->cdev.desc.__name)); \ +} + + +#define GI_DEVICE_DESC_SIMPLE_W_u8(_name) \ + static ssize_t gadget_dev_desc_##_name##_store(struct gadget_info *gi, \ + const char *page, size_t len) \ +{ \ + u8 val; \ + int ret; \ + ret = kstrtou8(page, 0, &val); \ + if (ret) \ + return ret; \ + gi->cdev.desc._name = val; \ + return len; \ +} + +#define GI_DEVICE_DESC_SIMPLE_W_u16(_name) \ + static ssize_t gadget_dev_desc_##_name##_store(struct gadget_info *gi, \ + const char *page, size_t len) \ +{ \ + u16 val; \ + int ret; \ + ret = kstrtou16(page, 0, &val); \ + if (ret) \ + return ret; \ + gi->cdev.desc._name = cpu_to_le16p(&val); \ + return len; \ +} + +#define GI_DEVICE_DESC_SIMPLE_RW(_name, _type) \ + GI_DEVICE_DESC_SIMPLE_R_##_type(_name) \ + GI_DEVICE_DESC_SIMPLE_W_##_type(_name) + +GI_DEVICE_DESC_SIMPLE_R_u16(bcdUSB); +GI_DEVICE_DESC_SIMPLE_RW(bDeviceClass, u8); +GI_DEVICE_DESC_SIMPLE_RW(bDeviceSubClass, u8); +GI_DEVICE_DESC_SIMPLE_RW(bDeviceProtocol, u8); +GI_DEVICE_DESC_SIMPLE_RW(bMaxPacketSize0, u8); +GI_DEVICE_DESC_SIMPLE_RW(idVendor, u16); +GI_DEVICE_DESC_SIMPLE_RW(idProduct, u16); +GI_DEVICE_DESC_SIMPLE_R_u16(bcdDevice); + +static ssize_t is_valid_bcd(u16 bcd_val) +{ + if ((bcd_val & 0xf) > 9) + return -EINVAL; + if (((bcd_val >> 4) & 0xf) > 9) + return -EINVAL; + if (((bcd_val >> 8) & 0xf) > 9) + return -EINVAL; + if (((bcd_val >> 12) & 0xf) > 9) + return -EINVAL; + return 0; +} + +static ssize_t gadget_dev_desc_bcdDevice_store(struct gadget_info *gi, + const char *page, size_t len) +{ + u16 bcdDevice; + int ret; + + ret = kstrtou16(page, 0, &bcdDevice); + if (ret) + return ret; + ret = is_valid_bcd(bcdDevice); + if (ret) + return ret; + + gi->cdev.desc.bcdDevice = cpu_to_le16(bcdDevice); + return len; +} + +static ssize_t gadget_dev_desc_bcdUSB_store(struct gadget_info *gi, + const char *page, size_t len) +{ + u16 bcdUSB; + int ret; + + ret = kstrtou16(page, 0, &bcdUSB); + if (ret) + return ret; + ret = is_valid_bcd(bcdUSB); + if (ret) + return ret; + + gi->cdev.desc.bcdUSB = cpu_to_le16(bcdUSB); + return len; +} + +static ssize_t gadget_dev_desc_UDC_show(struct gadget_info *gi, char *page) +{ + return sprintf(page, "%s\n", gi->udc_name ?: ""); +} + +static int unregister_gadget(struct gadget_info *gi) +{ + int ret; + + if (!gi->udc_name) + return -ENODEV; + + ret = usb_gadget_unregister_driver(&gi->composite.gadget_driver); + if (ret) + return ret; + kfree(gi->udc_name); + gi->udc_name = NULL; + return 0; +} + +static ssize_t gadget_dev_desc_UDC_store(struct gadget_info *gi, + const char *page, size_t len) +{ + char *name; + int ret; + + name = kstrdup(page, GFP_KERNEL); + if (!name) + return -ENOMEM; + if (name[len - 1] == '\n') + name[len - 1] = '\0'; + + mutex_lock(&gi->lock); + + if (!strlen(name)) { + ret = unregister_gadget(gi); + if (ret) + goto err; + } else { + if (gi->udc_name) { + ret = -EBUSY; + goto err; + } + ret = udc_attach_driver(name, &gi->composite.gadget_driver); + if (ret) + goto err; + gi->udc_name = name; + } + mutex_unlock(&gi->lock); + return len; +err: + kfree(name); + mutex_unlock(&gi->lock); + return ret; +} + +GI_DEVICE_DESC_ITEM_ATTR(bDeviceClass); +GI_DEVICE_DESC_ITEM_ATTR(bDeviceSubClass); +GI_DEVICE_DESC_ITEM_ATTR(bDeviceProtocol); +GI_DEVICE_DESC_ITEM_ATTR(bMaxPacketSize0); +GI_DEVICE_DESC_ITEM_ATTR(idVendor); +GI_DEVICE_DESC_ITEM_ATTR(idProduct); +GI_DEVICE_DESC_ITEM_ATTR(bcdDevice); +GI_DEVICE_DESC_ITEM_ATTR(bcdUSB); +GI_DEVICE_DESC_ITEM_ATTR(UDC); + +static struct configfs_attribute *gadget_root_attrs[] = { + &gadget_cdev_desc_bDeviceClass.attr, + &gadget_cdev_desc_bDeviceSubClass.attr, + &gadget_cdev_desc_bDeviceProtocol.attr, + &gadget_cdev_desc_bMaxPacketSize0.attr, + &gadget_cdev_desc_idVendor.attr, + &gadget_cdev_desc_idProduct.attr, + &gadget_cdev_desc_bcdDevice.attr, + &gadget_cdev_desc_bcdUSB.attr, + &gadget_cdev_desc_UDC.attr, + NULL, +}; + +static inline struct gadget_info *to_gadget_info(struct config_item *item) +{ + return container_of(to_config_group(item), struct gadget_info, group); +} + +static inline struct gadget_strings *to_gadget_strings(struct config_item *item) +{ + return container_of(to_config_group(item), struct gadget_strings, + group); +} + +static inline struct gadget_config_name *to_gadget_config_name( + struct config_item *item) +{ + return container_of(to_config_group(item), struct gadget_config_name, + group); +} + +static inline struct config_usb_cfg *to_config_usb_cfg(struct config_item *item) +{ + return container_of(to_config_group(item), struct config_usb_cfg, + group); +} + +static inline struct usb_function_instance *to_usb_function_instance( + struct config_item *item) +{ + return container_of(to_config_group(item), + struct usb_function_instance, group); +} + +static void gadget_info_attr_release(struct config_item *item) +{ + struct gadget_info *gi = to_gadget_info(item); + + WARN_ON(!list_empty(&gi->cdev.configs)); + WARN_ON(!list_empty(&gi->string_list)); + WARN_ON(!list_empty(&gi->available_func)); + kfree(gi->composite.gadget_driver.function); + kfree(gi); +} + +CONFIGFS_ATTR_OPS(gadget_info); + +static struct configfs_item_operations gadget_root_item_ops = { + .release = gadget_info_attr_release, + .show_attribute = gadget_info_attr_show, + .store_attribute = gadget_info_attr_store, +}; + +static void gadget_config_attr_release(struct config_item *item) +{ + struct config_usb_cfg *cfg = to_config_usb_cfg(item); + + WARN_ON(!list_empty(&cfg->c.functions)); + list_del(&cfg->c.list); + kfree(cfg->c.label); + kfree(cfg); +} + +static int config_usb_cfg_link( + struct config_item *usb_cfg_ci, + struct config_item *usb_func_ci) +{ + struct config_usb_cfg *cfg = to_config_usb_cfg(usb_cfg_ci); + struct usb_composite_dev *cdev = cfg->c.cdev; + struct gadget_info *gi = container_of(cdev, struct gadget_info, cdev); + + struct config_group *group = to_config_group(usb_func_ci); + struct usb_function_instance *fi = container_of(group, + struct usb_function_instance, group); + struct usb_function_instance *a_fi; + struct usb_function *f; + int ret; + + mutex_lock(&gi->lock); + /* + * Make sure this function is from within our _this_ gadget and not + * from another gadget or a random directory. + * Also a function instance can only be linked once. + */ + list_for_each_entry(a_fi, &gi->available_func, cfs_list) { + if (a_fi == fi) + break; + } + if (a_fi != fi) { + ret = -EINVAL; + goto out; + } + + list_for_each_entry(f, &cfg->func_list, list) { + if (f->fi == fi) { + ret = -EEXIST; + goto out; + } + } + + f = usb_get_function(fi); + if (IS_ERR(f)) { + ret = PTR_ERR(f); + goto out; + } + + /* stash the function until we bind it to the gadget */ + list_add_tail(&f->list, &cfg->func_list); + ret = 0; +out: + mutex_unlock(&gi->lock); + return ret; +} + +static int config_usb_cfg_unlink( + struct config_item *usb_cfg_ci, + struct config_item *usb_func_ci) +{ + struct config_usb_cfg *cfg = to_config_usb_cfg(usb_cfg_ci); + struct usb_composite_dev *cdev = cfg->c.cdev; + struct gadget_info *gi = container_of(cdev, struct gadget_info, cdev); + + struct config_group *group = to_config_group(usb_func_ci); + struct usb_function_instance *fi = container_of(group, + struct usb_function_instance, group); + struct usb_function *f; + + /* + * ideally I would like to forbid to unlink functions while a gadget is + * bound to an UDC. Since this isn't possible at the moment, we simply + * force an unbind, the function is available here and then we can + * remove the function. + */ + mutex_lock(&gi->lock); + if (gi->udc_name) + unregister_gadget(gi); + WARN_ON(gi->udc_name); + + list_for_each_entry(f, &cfg->func_list, list) { + if (f->fi == fi) { + list_del(&f->list); + usb_put_function(f); + mutex_unlock(&gi->lock); + return 0; + } + } + mutex_unlock(&gi->lock); + WARN(1, "Unable to locate function to unbind\n"); + return 0; +} + +CONFIGFS_ATTR_OPS(config_usb_cfg); + +static struct configfs_item_operations gadget_config_item_ops = { + .release = gadget_config_attr_release, + .show_attribute = config_usb_cfg_attr_show, + .store_attribute = config_usb_cfg_attr_store, + .allow_link = config_usb_cfg_link, + .drop_link = config_usb_cfg_unlink, +}; + + +static ssize_t gadget_config_desc_MaxPower_show(struct config_usb_cfg *cfg, + char *page) +{ + return sprintf(page, "%u\n", cfg->c.MaxPower); +} + +static ssize_t gadget_config_desc_MaxPower_store(struct config_usb_cfg *cfg, + const char *page, size_t len) +{ + u16 val; + int ret; + ret = kstrtou16(page, 0, &val); + if (ret) + return ret; + if (DIV_ROUND_UP(val, 8) > 0xff) + return -ERANGE; + cfg->c.MaxPower = val; + return len; +} + +static ssize_t gadget_config_desc_bmAttributes_show(struct config_usb_cfg *cfg, + char *page) +{ + return sprintf(page, "0x%02x\n", cfg->c.bmAttributes); +} + +static ssize_t gadget_config_desc_bmAttributes_store(struct config_usb_cfg *cfg, + const char *page, size_t len) +{ + u8 val; + int ret; + ret = kstrtou8(page, 0, &val); + if (ret) + return ret; + if (!(val & USB_CONFIG_ATT_ONE)) + return -EINVAL; + if (val & ~(USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER | + USB_CONFIG_ATT_WAKEUP)) + return -EINVAL; + cfg->c.bmAttributes = val; + return len; +} + +#define CFG_CONFIG_DESC_ITEM_ATTR(name) \ + static struct config_usb_cfg_attribute gadget_usb_cfg_##name = \ + __CONFIGFS_ATTR(name, S_IRUGO | S_IWUSR, \ + gadget_config_desc_##name##_show, \ + gadget_config_desc_##name##_store) + +CFG_CONFIG_DESC_ITEM_ATTR(MaxPower); +CFG_CONFIG_DESC_ITEM_ATTR(bmAttributes); + +static struct configfs_attribute *gadget_config_attrs[] = { + &gadget_usb_cfg_MaxPower.attr, + &gadget_usb_cfg_bmAttributes.attr, + NULL, +}; + +static struct config_item_type gadget_config_type = { + .ct_item_ops = &gadget_config_item_ops, + .ct_attrs = gadget_config_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item_type gadget_root_type = { + .ct_item_ops = &gadget_root_item_ops, + .ct_attrs = gadget_root_attrs, + .ct_owner = THIS_MODULE, +}; + +static void composite_init_dev(struct usb_composite_dev *cdev) +{ + spin_lock_init(&cdev->lock); + INIT_LIST_HEAD(&cdev->configs); + INIT_LIST_HEAD(&cdev->gstrings); +} + +static struct config_group *function_make( + struct config_group *group, + const char *name) +{ + struct gadget_info *gi; + struct usb_function_instance *fi; + char buf[MAX_NAME_LEN]; + char *func_name; + char *instance_name; + int ret; + + ret = snprintf(buf, MAX_NAME_LEN, "%s", name); + if (ret >= MAX_NAME_LEN) + return ERR_PTR(-ENAMETOOLONG); + + func_name = buf; + instance_name = strchr(func_name, '.'); + if (!instance_name) { + pr_err("Unable to locate . in FUNC.INSTANCE\n"); + return ERR_PTR(-EINVAL); + } + *instance_name = '\0'; + instance_name++; + + fi = usb_get_function_instance(func_name); + if (IS_ERR(fi)) + return ERR_CAST(fi); + + ret = config_item_set_name(&fi->group.cg_item, name); + if (ret) { + usb_put_function_instance(fi); + return ERR_PTR(ret); + } + if (fi->set_inst_name) { + ret = fi->set_inst_name(fi, instance_name); + if (ret) { + usb_put_function_instance(fi); + return ERR_PTR(ret); + } + } + + gi = container_of(group, struct gadget_info, functions_group); + + mutex_lock(&gi->lock); + list_add_tail(&fi->cfs_list, &gi->available_func); + mutex_unlock(&gi->lock); + return &fi->group; +} + +static void function_drop( + struct config_group *group, + struct config_item *item) +{ + struct usb_function_instance *fi = to_usb_function_instance(item); + struct gadget_info *gi; + + gi = container_of(group, struct gadget_info, functions_group); + + mutex_lock(&gi->lock); + list_del(&fi->cfs_list); + mutex_unlock(&gi->lock); + config_item_put(item); +} + +static struct configfs_group_operations functions_ops = { + .make_group = &function_make, + .drop_item = &function_drop, +}; + +static struct config_item_type functions_type = { + .ct_group_ops = &functions_ops, + .ct_owner = THIS_MODULE, +}; + +CONFIGFS_ATTR_STRUCT(gadget_config_name); +GS_STRINGS_RW(gadget_config_name, configuration); + +static struct configfs_attribute *gadget_config_name_langid_attrs[] = { + &gadget_config_name_configuration.attr, + NULL, +}; + +static void gadget_config_name_attr_release(struct config_item *item) +{ + struct gadget_config_name *cn = to_gadget_config_name(item); + + kfree(cn->configuration); + + list_del(&cn->list); + kfree(cn); +} + +USB_CONFIG_STRING_RW_OPS(gadget_config_name); +USB_CONFIG_STRINGS_LANG(gadget_config_name, config_usb_cfg); + +static struct config_group *config_desc_make( + struct config_group *group, + const char *name) +{ + struct gadget_info *gi; + struct config_usb_cfg *cfg; + char buf[MAX_NAME_LEN]; + char *num_str; + u8 num; + int ret; + + gi = container_of(group, struct gadget_info, configs_group); + ret = snprintf(buf, MAX_NAME_LEN, "%s", name); + if (ret >= MAX_NAME_LEN) + return ERR_PTR(-ENAMETOOLONG); + + num_str = strchr(buf, '.'); + if (!num_str) { + pr_err("Unable to locate . in name.bConfigurationValue\n"); + return ERR_PTR(-EINVAL); + } + + *num_str = '\0'; + num_str++; + + if (!strlen(buf)) + return ERR_PTR(-EINVAL); + + ret = kstrtou8(num_str, 0, &num); + if (ret) + return ERR_PTR(ret); + + cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); + if (!cfg) + return ERR_PTR(-ENOMEM); + cfg->c.label = kstrdup(buf, GFP_KERNEL); + if (!cfg->c.label) { + ret = -ENOMEM; + goto err; + } + cfg->c.bConfigurationValue = num; + cfg->c.MaxPower = CONFIG_USB_GADGET_VBUS_DRAW; + cfg->c.bmAttributes = USB_CONFIG_ATT_ONE; + INIT_LIST_HEAD(&cfg->string_list); + INIT_LIST_HEAD(&cfg->func_list); + + cfg->group.default_groups = cfg->default_groups; + cfg->default_groups[0] = &cfg->strings_group; + + config_group_init_type_name(&cfg->group, name, + &gadget_config_type); + config_group_init_type_name(&cfg->strings_group, "strings", + &gadget_config_name_strings_type); + + ret = usb_add_config_only(&gi->cdev, &cfg->c); + if (ret) + goto err; + + return &cfg->group; +err: + kfree(cfg->c.label); + kfree(cfg); + return ERR_PTR(ret); +} + +static void config_desc_drop( + struct config_group *group, + struct config_item *item) +{ + config_item_put(item); +} + +static struct configfs_group_operations config_desc_ops = { + .make_group = &config_desc_make, + .drop_item = &config_desc_drop, +}; + +static struct config_item_type config_desc_type = { + .ct_group_ops = &config_desc_ops, + .ct_owner = THIS_MODULE, +}; + +CONFIGFS_ATTR_STRUCT(gadget_strings); +GS_STRINGS_RW(gadget_strings, manufacturer); +GS_STRINGS_RW(gadget_strings, product); +GS_STRINGS_RW(gadget_strings, serialnumber); + +static struct configfs_attribute *gadget_strings_langid_attrs[] = { + &gadget_strings_manufacturer.attr, + &gadget_strings_product.attr, + &gadget_strings_serialnumber.attr, + NULL, +}; + +static void gadget_strings_attr_release(struct config_item *item) +{ + struct gadget_strings *gs = to_gadget_strings(item); + + kfree(gs->manufacturer); + kfree(gs->product); + kfree(gs->serialnumber); + + list_del(&gs->list); + kfree(gs); +} + +USB_CONFIG_STRING_RW_OPS(gadget_strings); +USB_CONFIG_STRINGS_LANG(gadget_strings, gadget_info); + +static inline struct os_desc *to_os_desc(struct config_item *item) +{ + return container_of(to_config_group(item), struct os_desc, group); +} + +CONFIGFS_ATTR_STRUCT(os_desc); +CONFIGFS_ATTR_OPS(os_desc); + +static ssize_t os_desc_use_show(struct os_desc *os_desc, char *page) +{ + struct gadget_info *gi; + + gi = to_gadget_info(os_desc->group.cg_item.ci_parent); + + return sprintf(page, "%d", gi->use_os_desc); +} + +static ssize_t os_desc_use_store(struct os_desc *os_desc, const char *page, + size_t len) +{ + struct gadget_info *gi; + int ret; + bool use; + + gi = to_gadget_info(os_desc->group.cg_item.ci_parent); + + mutex_lock(&gi->lock); + ret = strtobool(page, &use); + if (!ret) { + gi->use_os_desc = use; + ret = len; + } + mutex_unlock(&gi->lock); + + return ret; +} + +static struct os_desc_attribute os_desc_use = + __CONFIGFS_ATTR(use, S_IRUGO | S_IWUSR, + os_desc_use_show, + os_desc_use_store); + +static ssize_t os_desc_b_vendor_code_show(struct os_desc *os_desc, char *page) +{ + struct gadget_info *gi; + + gi = to_gadget_info(os_desc->group.cg_item.ci_parent); + + return sprintf(page, "%d", gi->b_vendor_code); +} + +static ssize_t os_desc_b_vendor_code_store(struct os_desc *os_desc, + const char *page, size_t len) +{ + struct gadget_info *gi; + int ret; + u8 b_vendor_code; + + gi = to_gadget_info(os_desc->group.cg_item.ci_parent); + + mutex_lock(&gi->lock); + ret = kstrtou8(page, 0, &b_vendor_code); + if (!ret) { + gi->b_vendor_code = b_vendor_code; + ret = len; + } + mutex_unlock(&gi->lock); + + return ret; +} + +static struct os_desc_attribute os_desc_b_vendor_code = + __CONFIGFS_ATTR(b_vendor_code, S_IRUGO | S_IWUSR, + os_desc_b_vendor_code_show, + os_desc_b_vendor_code_store); + +static ssize_t os_desc_qw_sign_show(struct os_desc *os_desc, char *page) +{ + struct gadget_info *gi; + + gi = to_gadget_info(os_desc->group.cg_item.ci_parent); + + memcpy(page, gi->qw_sign, OS_STRING_QW_SIGN_LEN); + + return OS_STRING_QW_SIGN_LEN; +} + +static ssize_t os_desc_qw_sign_store(struct os_desc *os_desc, const char *page, + size_t len) +{ + struct gadget_info *gi; + int res, l; + + gi = to_gadget_info(os_desc->group.cg_item.ci_parent); + l = min((int)len, OS_STRING_QW_SIGN_LEN >> 1); + if (page[l - 1] == '\n') + --l; + + mutex_lock(&gi->lock); + res = utf8s_to_utf16s(page, l, + UTF16_LITTLE_ENDIAN, (wchar_t *) gi->qw_sign, + OS_STRING_QW_SIGN_LEN); + if (res > 0) + res = len; + mutex_unlock(&gi->lock); + + return res; +} + +static struct os_desc_attribute os_desc_qw_sign = + __CONFIGFS_ATTR(qw_sign, S_IRUGO | S_IWUSR, + os_desc_qw_sign_show, + os_desc_qw_sign_store); + +static struct configfs_attribute *os_desc_attrs[] = { + &os_desc_use.attr, + &os_desc_b_vendor_code.attr, + &os_desc_qw_sign.attr, + NULL, +}; + +static void os_desc_attr_release(struct config_item *item) +{ + struct os_desc *os_desc = to_os_desc(item); + kfree(os_desc); +} + +static int os_desc_link(struct config_item *os_desc_ci, + struct config_item *usb_cfg_ci) +{ + struct gadget_info *gi = container_of(to_config_group(os_desc_ci), + struct gadget_info, os_desc_group); + struct usb_composite_dev *cdev = &gi->cdev; + struct config_usb_cfg *c_target = + container_of(to_config_group(usb_cfg_ci), + struct config_usb_cfg, group); + struct usb_configuration *c; + int ret; + + mutex_lock(&gi->lock); + list_for_each_entry(c, &cdev->configs, list) { + if (c == &c_target->c) + break; + } + if (c != &c_target->c) { + ret = -EINVAL; + goto out; + } + + if (cdev->os_desc_config) { + ret = -EBUSY; + goto out; + } + + cdev->os_desc_config = &c_target->c; + ret = 0; + +out: + mutex_unlock(&gi->lock); + return ret; +} + +static int os_desc_unlink(struct config_item *os_desc_ci, + struct config_item *usb_cfg_ci) +{ + struct gadget_info *gi = container_of(to_config_group(os_desc_ci), + struct gadget_info, os_desc_group); + struct usb_composite_dev *cdev = &gi->cdev; + + mutex_lock(&gi->lock); + if (gi->udc_name) + unregister_gadget(gi); + cdev->os_desc_config = NULL; + WARN_ON(gi->udc_name); + mutex_unlock(&gi->lock); + return 0; +} + +static struct configfs_item_operations os_desc_ops = { + .release = os_desc_attr_release, + .show_attribute = os_desc_attr_show, + .store_attribute = os_desc_attr_store, + .allow_link = os_desc_link, + .drop_link = os_desc_unlink, +}; + +static struct config_item_type os_desc_type = { + .ct_item_ops = &os_desc_ops, + .ct_attrs = os_desc_attrs, + .ct_owner = THIS_MODULE, +}; + +CONFIGFS_ATTR_STRUCT(usb_os_desc); +CONFIGFS_ATTR_OPS(usb_os_desc); + + +static inline struct usb_os_desc_ext_prop +*to_usb_os_desc_ext_prop(struct config_item *item) +{ + return container_of(item, struct usb_os_desc_ext_prop, item); +} + +CONFIGFS_ATTR_STRUCT(usb_os_desc_ext_prop); +CONFIGFS_ATTR_OPS(usb_os_desc_ext_prop); + +static ssize_t ext_prop_type_show(struct usb_os_desc_ext_prop *ext_prop, + char *page) +{ + return sprintf(page, "%d", ext_prop->type); +} + +static ssize_t ext_prop_type_store(struct usb_os_desc_ext_prop *ext_prop, + const char *page, size_t len) +{ + struct usb_os_desc *desc = to_usb_os_desc(ext_prop->item.ci_parent); + u8 type; + int ret; + + if (desc->opts_mutex) + mutex_lock(desc->opts_mutex); + ret = kstrtou8(page, 0, &type); + if (ret) + goto end; + if (type < USB_EXT_PROP_UNICODE || type > USB_EXT_PROP_UNICODE_MULTI) { + ret = -EINVAL; + goto end; + } + + if ((ext_prop->type == USB_EXT_PROP_BINARY || + ext_prop->type == USB_EXT_PROP_LE32 || + ext_prop->type == USB_EXT_PROP_BE32) && + (type == USB_EXT_PROP_UNICODE || + type == USB_EXT_PROP_UNICODE_ENV || + type == USB_EXT_PROP_UNICODE_LINK)) + ext_prop->data_len <<= 1; + else if ((ext_prop->type == USB_EXT_PROP_UNICODE || + ext_prop->type == USB_EXT_PROP_UNICODE_ENV || + ext_prop->type == USB_EXT_PROP_UNICODE_LINK) && + (type == USB_EXT_PROP_BINARY || + type == USB_EXT_PROP_LE32 || + type == USB_EXT_PROP_BE32)) + ext_prop->data_len >>= 1; + ext_prop->type = type; + ret = len; + +end: + if (desc->opts_mutex) + mutex_unlock(desc->opts_mutex); + return ret; +} + +static ssize_t ext_prop_data_show(struct usb_os_desc_ext_prop *ext_prop, + char *page) +{ + int len = ext_prop->data_len; + + if (ext_prop->type == USB_EXT_PROP_UNICODE || + ext_prop->type == USB_EXT_PROP_UNICODE_ENV || + ext_prop->type == USB_EXT_PROP_UNICODE_LINK) + len >>= 1; + memcpy(page, ext_prop->data, len); + + return len; +} + +static ssize_t ext_prop_data_store(struct usb_os_desc_ext_prop *ext_prop, + const char *page, size_t len) +{ + struct usb_os_desc *desc = to_usb_os_desc(ext_prop->item.ci_parent); + char *new_data; + size_t ret_len = len; + + if (page[len - 1] == '\n' || page[len - 1] == '\0') + --len; + new_data = kzalloc(len, GFP_KERNEL); + if (!new_data) + return -ENOMEM; + + memcpy(new_data, page, len); + + if (desc->opts_mutex) + mutex_lock(desc->opts_mutex); + kfree(ext_prop->data); + ext_prop->data = new_data; + desc->ext_prop_len -= ext_prop->data_len; + ext_prop->data_len = len; + desc->ext_prop_len += ext_prop->data_len; + if (ext_prop->type == USB_EXT_PROP_UNICODE || + ext_prop->type == USB_EXT_PROP_UNICODE_ENV || + ext_prop->type == USB_EXT_PROP_UNICODE_LINK) { + desc->ext_prop_len -= ext_prop->data_len; + ext_prop->data_len <<= 1; + ext_prop->data_len += 2; + desc->ext_prop_len += ext_prop->data_len; + } + if (desc->opts_mutex) + mutex_unlock(desc->opts_mutex); + return ret_len; +} + +static struct usb_os_desc_ext_prop_attribute ext_prop_type = + __CONFIGFS_ATTR(type, S_IRUGO | S_IWUSR, + ext_prop_type_show, ext_prop_type_store); + +static struct usb_os_desc_ext_prop_attribute ext_prop_data = + __CONFIGFS_ATTR(data, S_IRUGO | S_IWUSR, + ext_prop_data_show, ext_prop_data_store); + +static struct configfs_attribute *ext_prop_attrs[] = { + &ext_prop_type.attr, + &ext_prop_data.attr, + NULL, +}; + +static void usb_os_desc_ext_prop_release(struct config_item *item) +{ + struct usb_os_desc_ext_prop *ext_prop = to_usb_os_desc_ext_prop(item); + + kfree(ext_prop); /* frees a whole chunk */ +} + +static struct configfs_item_operations ext_prop_ops = { + .release = usb_os_desc_ext_prop_release, + .show_attribute = usb_os_desc_ext_prop_attr_show, + .store_attribute = usb_os_desc_ext_prop_attr_store, +}; + +static struct config_item *ext_prop_make( + struct config_group *group, + const char *name) +{ + struct usb_os_desc_ext_prop *ext_prop; + struct config_item_type *ext_prop_type; + struct usb_os_desc *desc; + char *vlabuf; + + vla_group(data_chunk); + vla_item(data_chunk, struct usb_os_desc_ext_prop, ext_prop, 1); + vla_item(data_chunk, struct config_item_type, ext_prop_type, 1); + + vlabuf = kzalloc(vla_group_size(data_chunk), GFP_KERNEL); + if (!vlabuf) + return ERR_PTR(-ENOMEM); + + ext_prop = vla_ptr(vlabuf, data_chunk, ext_prop); + ext_prop_type = vla_ptr(vlabuf, data_chunk, ext_prop_type); + + desc = container_of(group, struct usb_os_desc, group); + ext_prop_type->ct_item_ops = &ext_prop_ops; + ext_prop_type->ct_attrs = ext_prop_attrs; + ext_prop_type->ct_owner = desc->owner; + + config_item_init_type_name(&ext_prop->item, name, ext_prop_type); + + ext_prop->name = kstrdup(name, GFP_KERNEL); + if (!ext_prop->name) { + kfree(vlabuf); + return ERR_PTR(-ENOMEM); + } + desc->ext_prop_len += 14; + ext_prop->name_len = 2 * strlen(ext_prop->name) + 2; + if (desc->opts_mutex) + mutex_lock(desc->opts_mutex); + desc->ext_prop_len += ext_prop->name_len; + list_add_tail(&ext_prop->entry, &desc->ext_prop); + ++desc->ext_prop_count; + if (desc->opts_mutex) + mutex_unlock(desc->opts_mutex); + + return &ext_prop->item; +} + +static void ext_prop_drop(struct config_group *group, struct config_item *item) +{ + struct usb_os_desc_ext_prop *ext_prop = to_usb_os_desc_ext_prop(item); + struct usb_os_desc *desc = to_usb_os_desc(&group->cg_item); + + if (desc->opts_mutex) + mutex_lock(desc->opts_mutex); + list_del(&ext_prop->entry); + --desc->ext_prop_count; + kfree(ext_prop->name); + desc->ext_prop_len -= (ext_prop->name_len + ext_prop->data_len + 14); + if (desc->opts_mutex) + mutex_unlock(desc->opts_mutex); + config_item_put(item); +} + +static struct configfs_group_operations interf_grp_ops = { + .make_item = &ext_prop_make, + .drop_item = &ext_prop_drop, +}; + +static struct configfs_item_operations interf_item_ops = { + .show_attribute = usb_os_desc_attr_show, + .store_attribute = usb_os_desc_attr_store, +}; + +static ssize_t interf_grp_compatible_id_show(struct usb_os_desc *desc, + char *page) +{ + memcpy(page, desc->ext_compat_id, 8); + return 8; +} + +static ssize_t interf_grp_compatible_id_store(struct usb_os_desc *desc, + const char *page, size_t len) +{ + int l; + + l = min_t(int, 8, len); + if (page[l - 1] == '\n') + --l; + if (desc->opts_mutex) + mutex_lock(desc->opts_mutex); + memcpy(desc->ext_compat_id, page, l); + desc->ext_compat_id[l] = '\0'; + + if (desc->opts_mutex) + mutex_unlock(desc->opts_mutex); + + return len; +} + +static struct usb_os_desc_attribute interf_grp_attr_compatible_id = + __CONFIGFS_ATTR(compatible_id, S_IRUGO | S_IWUSR, + interf_grp_compatible_id_show, + interf_grp_compatible_id_store); + +static ssize_t interf_grp_sub_compatible_id_show(struct usb_os_desc *desc, + char *page) +{ + memcpy(page, desc->ext_compat_id + 8, 8); + return 8; +} + +static ssize_t interf_grp_sub_compatible_id_store(struct usb_os_desc *desc, + const char *page, size_t len) +{ + int l; + + l = min_t(int, 8, len); + if (page[l - 1] == '\n') + --l; + if (desc->opts_mutex) + mutex_lock(desc->opts_mutex); + memcpy(desc->ext_compat_id + 8, page, l); + desc->ext_compat_id[l + 8] = '\0'; + + if (desc->opts_mutex) + mutex_unlock(desc->opts_mutex); + + return len; +} + +static struct usb_os_desc_attribute interf_grp_attr_sub_compatible_id = + __CONFIGFS_ATTR(sub_compatible_id, S_IRUGO | S_IWUSR, + interf_grp_sub_compatible_id_show, + interf_grp_sub_compatible_id_store); + +static struct configfs_attribute *interf_grp_attrs[] = { + &interf_grp_attr_compatible_id.attr, + &interf_grp_attr_sub_compatible_id.attr, + NULL +}; + +int usb_os_desc_prepare_interf_dir(struct config_group *parent, + int n_interf, + struct usb_os_desc **desc, + char **names, + struct module *owner) +{ + struct config_group **f_default_groups, *os_desc_group, + **interface_groups; + struct config_item_type *os_desc_type, *interface_type; + + vla_group(data_chunk); + vla_item(data_chunk, struct config_group *, f_default_groups, 2); + vla_item(data_chunk, struct config_group, os_desc_group, 1); + vla_item(data_chunk, struct config_group *, interface_groups, + n_interf + 1); + vla_item(data_chunk, struct config_item_type, os_desc_type, 1); + vla_item(data_chunk, struct config_item_type, interface_type, 1); + + char *vlabuf = kzalloc(vla_group_size(data_chunk), GFP_KERNEL); + if (!vlabuf) + return -ENOMEM; + + f_default_groups = vla_ptr(vlabuf, data_chunk, f_default_groups); + os_desc_group = vla_ptr(vlabuf, data_chunk, os_desc_group); + os_desc_type = vla_ptr(vlabuf, data_chunk, os_desc_type); + interface_groups = vla_ptr(vlabuf, data_chunk, interface_groups); + interface_type = vla_ptr(vlabuf, data_chunk, interface_type); + + parent->default_groups = f_default_groups; + os_desc_type->ct_owner = owner; + config_group_init_type_name(os_desc_group, "os_desc", os_desc_type); + f_default_groups[0] = os_desc_group; + + os_desc_group->default_groups = interface_groups; + interface_type->ct_item_ops = &interf_item_ops; + interface_type->ct_group_ops = &interf_grp_ops; + interface_type->ct_attrs = interf_grp_attrs; + interface_type->ct_owner = owner; + + while (n_interf--) { + struct usb_os_desc *d; + + d = desc[n_interf]; + d->owner = owner; + config_group_init_type_name(&d->group, "", interface_type); + config_item_set_name(&d->group.cg_item, "interface.%s", + names[n_interf]); + interface_groups[n_interf] = &d->group; + } + + return 0; +} +EXPORT_SYMBOL(usb_os_desc_prepare_interf_dir); + +static int configfs_do_nothing(struct usb_composite_dev *cdev) +{ + WARN_ON(1); + return -EINVAL; +} + +int composite_dev_prepare(struct usb_composite_driver *composite, + struct usb_composite_dev *dev); + +int composite_os_desc_req_prepare(struct usb_composite_dev *cdev, + struct usb_ep *ep0); + +static void purge_configs_funcs(struct gadget_info *gi) +{ + struct usb_configuration *c; + + list_for_each_entry(c, &gi->cdev.configs, list) { + struct usb_function *f, *tmp; + struct config_usb_cfg *cfg; + + cfg = container_of(c, struct config_usb_cfg, c); + + list_for_each_entry_safe(f, tmp, &c->functions, list) { + + list_move_tail(&f->list, &cfg->func_list); + if (f->unbind) { + dev_err(&gi->cdev.gadget->dev, "unbind function" + " '%s'/%p\n", f->name, f); + f->unbind(c, f); + } + } + c->next_interface_id = 0; + c->superspeed = 0; + c->highspeed = 0; + c->fullspeed = 0; + } +} + +static int configfs_composite_bind(struct usb_gadget *gadget, + struct usb_gadget_driver *gdriver) +{ + struct usb_composite_driver *composite = to_cdriver(gdriver); + struct gadget_info *gi = container_of(composite, + struct gadget_info, composite); + struct usb_composite_dev *cdev = &gi->cdev; + struct usb_configuration *c; + struct usb_string *s; + unsigned i; + int ret; + + /* the gi->lock is hold by the caller */ + cdev->gadget = gadget; + set_gadget_data(gadget, cdev); + ret = composite_dev_prepare(composite, cdev); + if (ret) + return ret; + /* and now the gadget bind */ + ret = -EINVAL; + + if (list_empty(&gi->cdev.configs)) { + pr_err("Need at least one configuration in %s.\n", + gi->composite.name); + goto err_comp_cleanup; + } + + + list_for_each_entry(c, &gi->cdev.configs, list) { + struct config_usb_cfg *cfg; + + cfg = container_of(c, struct config_usb_cfg, c); + if (list_empty(&cfg->func_list)) { + pr_err("Config %s/%d of %s needs at least one function.\n", + c->label, c->bConfigurationValue, + gi->composite.name); + goto err_comp_cleanup; + } + } + + /* init all strings */ + if (!list_empty(&gi->string_list)) { + struct gadget_strings *gs; + + i = 0; + list_for_each_entry(gs, &gi->string_list, list) { + + gi->gstrings[i] = &gs->stringtab_dev; + gs->stringtab_dev.strings = gs->strings; + gs->strings[USB_GADGET_MANUFACTURER_IDX].s = + gs->manufacturer; + gs->strings[USB_GADGET_PRODUCT_IDX].s = gs->product; + gs->strings[USB_GADGET_SERIAL_IDX].s = gs->serialnumber; + i++; + } + gi->gstrings[i] = NULL; + s = usb_gstrings_attach(&gi->cdev, gi->gstrings, + USB_GADGET_FIRST_AVAIL_IDX); + if (IS_ERR(s)) { + ret = PTR_ERR(s); + goto err_comp_cleanup; + } + + gi->cdev.desc.iManufacturer = s[USB_GADGET_MANUFACTURER_IDX].id; + gi->cdev.desc.iProduct = s[USB_GADGET_PRODUCT_IDX].id; + gi->cdev.desc.iSerialNumber = s[USB_GADGET_SERIAL_IDX].id; + } + + if (gi->use_os_desc) { + cdev->use_os_string = true; + cdev->b_vendor_code = gi->b_vendor_code; + memcpy(cdev->qw_sign, gi->qw_sign, OS_STRING_QW_SIGN_LEN); + } + + /* Go through all configs, attach all functions */ + list_for_each_entry(c, &gi->cdev.configs, list) { + struct config_usb_cfg *cfg; + struct usb_function *f; + struct usb_function *tmp; + struct gadget_config_name *cn; + + cfg = container_of(c, struct config_usb_cfg, c); + if (!list_empty(&cfg->string_list)) { + i = 0; + list_for_each_entry(cn, &cfg->string_list, list) { + cfg->gstrings[i] = &cn->stringtab_dev; + cn->stringtab_dev.strings = &cn->strings; + cn->strings.s = cn->configuration; + i++; + } + cfg->gstrings[i] = NULL; + s = usb_gstrings_attach(&gi->cdev, cfg->gstrings, 1); + if (IS_ERR(s)) { + ret = PTR_ERR(s); + goto err_comp_cleanup; + } + c->iConfiguration = s[0].id; + } + + list_for_each_entry_safe(f, tmp, &cfg->func_list, list) { + list_del(&f->list); + ret = usb_add_function(c, f); + if (ret) { + list_add(&f->list, &cfg->func_list); + goto err_purge_funcs; + } + } + usb_ep_autoconfig_reset(cdev->gadget); + } + if (cdev->use_os_string) { + ret = composite_os_desc_req_prepare(cdev, gadget->ep0); + if (ret) + goto err_purge_funcs; + } + + usb_ep_autoconfig_reset(cdev->gadget); + return 0; + +err_purge_funcs: + purge_configs_funcs(gi); +err_comp_cleanup: + composite_dev_cleanup(cdev); + return ret; +} + +static void configfs_composite_unbind(struct usb_gadget *gadget) +{ + struct usb_composite_dev *cdev; + struct gadget_info *gi; + + /* the gi->lock is hold by the caller */ + + cdev = get_gadget_data(gadget); + gi = container_of(cdev, struct gadget_info, cdev); + + purge_configs_funcs(gi); + composite_dev_cleanup(cdev); + usb_ep_autoconfig_reset(cdev->gadget); + cdev->gadget = NULL; + set_gadget_data(gadget, NULL); +} + +static const struct usb_gadget_driver configfs_driver_template = { + .bind = configfs_composite_bind, + .unbind = configfs_composite_unbind, + + .setup = composite_setup, + .disconnect = composite_disconnect, + + .max_speed = USB_SPEED_SUPER, + .driver = { + .owner = THIS_MODULE, + .name = "configfs-gadget", + }, +}; + +static struct config_group *gadgets_make( + struct config_group *group, + const char *name) +{ + struct gadget_info *gi; + + gi = kzalloc(sizeof(*gi), GFP_KERNEL); + if (!gi) + return ERR_PTR(-ENOMEM); + + gi->group.default_groups = gi->default_groups; + gi->group.default_groups[0] = &gi->functions_group; + gi->group.default_groups[1] = &gi->configs_group; + gi->group.default_groups[2] = &gi->strings_group; + gi->group.default_groups[3] = &gi->os_desc_group; + + config_group_init_type_name(&gi->functions_group, "functions", + &functions_type); + config_group_init_type_name(&gi->configs_group, "configs", + &config_desc_type); + config_group_init_type_name(&gi->strings_group, "strings", + &gadget_strings_strings_type); + config_group_init_type_name(&gi->os_desc_group, "os_desc", + &os_desc_type); + + gi->composite.bind = configfs_do_nothing; + gi->composite.unbind = configfs_do_nothing; + gi->composite.suspend = NULL; + gi->composite.resume = NULL; + gi->composite.max_speed = USB_SPEED_SUPER; + + mutex_init(&gi->lock); + INIT_LIST_HEAD(&gi->string_list); + INIT_LIST_HEAD(&gi->available_func); + + composite_init_dev(&gi->cdev); + gi->cdev.desc.bLength = USB_DT_DEVICE_SIZE; + gi->cdev.desc.bDescriptorType = USB_DT_DEVICE; + gi->cdev.desc.bcdDevice = cpu_to_le16(get_default_bcdDevice()); + + gi->composite.gadget_driver = configfs_driver_template; + + gi->composite.gadget_driver.function = kstrdup(name, GFP_KERNEL); + gi->composite.name = gi->composite.gadget_driver.function; + + if (!gi->composite.gadget_driver.function) + goto err; + +#ifdef CONFIG_USB_OTG + gi->otg.bLength = sizeof(struct usb_otg_descriptor); + gi->otg.bDescriptorType = USB_DT_OTG; + gi->otg.bmAttributes = USB_OTG_SRP | USB_OTG_HNP; +#endif + + config_group_init_type_name(&gi->group, name, + &gadget_root_type); + return &gi->group; +err: + kfree(gi); + return ERR_PTR(-ENOMEM); +} + +static void gadgets_drop(struct config_group *group, struct config_item *item) +{ + config_item_put(item); +} + +static struct configfs_group_operations gadgets_ops = { + .make_group = &gadgets_make, + .drop_item = &gadgets_drop, +}; + +static struct config_item_type gadgets_type = { + .ct_group_ops = &gadgets_ops, + .ct_owner = THIS_MODULE, +}; + +static struct configfs_subsystem gadget_subsys = { + .su_group = { + .cg_item = { + .ci_namebuf = "usb_gadget", + .ci_type = &gadgets_type, + }, + }, + .su_mutex = __MUTEX_INITIALIZER(gadget_subsys.su_mutex), +}; + +void unregister_gadget_item(struct config_item *item) +{ + struct gadget_info *gi = to_gadget_info(item); + + unregister_gadget(gi); +} +EXPORT_SYMBOL_GPL(unregister_gadget_item); + +static int __init gadget_cfs_init(void) +{ + int ret; + + config_group_init(&gadget_subsys.su_group); + + ret = configfs_register_subsystem(&gadget_subsys); + return ret; +} +module_init(gadget_cfs_init); + +static void __exit gadget_cfs_exit(void) +{ + configfs_unregister_subsystem(&gadget_subsys); +} +module_exit(gadget_cfs_exit); diff --git a/drivers/usb/gadget/configfs.h b/drivers/usb/gadget/configfs.h new file mode 100644 index 00000000000..36c468c4f5e --- /dev/null +++ b/drivers/usb/gadget/configfs.h @@ -0,0 +1,19 @@ +#ifndef USB__GADGET__CONFIGFS__H +#define USB__GADGET__CONFIGFS__H + +#include <linux/configfs.h> + +void unregister_gadget_item(struct config_item *item); + +int usb_os_desc_prepare_interf_dir(struct config_group *parent, + int n_interf, + struct usb_os_desc **desc, + char **names, + struct module *owner); + +static inline struct usb_os_desc *to_usb_os_desc(struct config_item *item) +{ + return container_of(to_config_group(item), struct usb_os_desc, group); +} + +#endif /* USB__GADGET__CONFIGFS__H */ diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c index 19d7bb0df75..986fc511a2e 100644 --- a/drivers/usb/gadget/dbgp.c +++ b/drivers/usb/gadget/dbgp.c @@ -13,12 +13,7 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> -/* See comments in "zero.c" */ -#include "epautoconf.c" - -#ifdef CONFIG_USB_G_DBGP_SERIAL -#include "u_serial.c" -#endif +#include "u_serial.h" #define DRIVER_VENDOR_ID 0x0525 /* NetChip */ #define DRIVER_PRODUCT_ID 0xc0de /* undefined */ @@ -236,6 +231,10 @@ static void dbgp_unbind(struct usb_gadget *gadget) gadget->ep0->driver_data = NULL; } +#ifdef CONFIG_USB_G_DBGP_SERIAL +static unsigned char tty_line; +#endif + static int __init dbgp_configure_endpoints(struct usb_gadget *gadget) { int stp; @@ -273,7 +272,7 @@ static int __init dbgp_configure_endpoints(struct usb_gadget *gadget) dbgp.serial->in->desc = &i_desc; dbgp.serial->out->desc = &o_desc; - if (gserial_setup(gadget, 1) < 0) { + if (gserial_alloc_line(&tty_line)) { stp = 3; goto fail_3; } @@ -292,7 +291,8 @@ fail_1: return -ENODEV; } -static int __init dbgp_bind(struct usb_gadget *gadget) +static int __init dbgp_bind(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { int err, stp; @@ -381,7 +381,7 @@ static int dbgp_setup(struct usb_gadget *gadget, #ifdef CONFIG_USB_G_DBGP_PRINTK err = dbgp_enable_ep(); #else - err = gserial_connect(dbgp.serial, 0); + err = gserial_connect(dbgp.serial, tty_line); #endif if (err < 0) goto fail; @@ -402,9 +402,10 @@ fail: return err; } -static struct usb_gadget_driver dbgp_driver = { +static __refdata struct usb_gadget_driver dbgp_driver = { .function = "dbgp", .max_speed = USB_SPEED_HIGH, + .bind = dbgp_bind, .unbind = dbgp_unbind, .setup = dbgp_setup, .disconnect = dbgp_disconnect, @@ -416,14 +417,14 @@ static struct usb_gadget_driver dbgp_driver = { static int __init dbgp_init(void) { - return usb_gadget_probe_driver(&dbgp_driver, dbgp_bind); + return usb_gadget_probe_driver(&dbgp_driver); } static void __exit dbgp_exit(void) { usb_gadget_unregister_driver(&dbgp_driver); #ifdef CONFIG_USB_G_DBGP_SERIAL - gserial_cleanup(); + gserial_free_line(tty_line); #endif } diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index db815c2da7e..2b54955d316 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -39,41 +39,44 @@ #include <linux/usb.h> #include <linux/usb/gadget.h> #include <linux/usb/hcd.h> +#include <linux/scatterlist.h> #include <asm/byteorder.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/unaligned.h> - #define DRIVER_DESC "USB Host+Gadget Emulator" #define DRIVER_VERSION "02 May 2005" #define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ -static const char driver_name [] = "dummy_hcd"; -static const char driver_desc [] = "USB Host+Gadget Emulator"; +static const char driver_name[] = "dummy_hcd"; +static const char driver_desc[] = "USB Host+Gadget Emulator"; -static const char gadget_name [] = "dummy_udc"; +static const char gadget_name[] = "dummy_udc"; -MODULE_DESCRIPTION (DRIVER_DESC); -MODULE_AUTHOR ("David Brownell"); -MODULE_LICENSE ("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("David Brownell"); +MODULE_LICENSE("GPL"); struct dummy_hcd_module_parameters { bool is_super_speed; bool is_high_speed; + unsigned int num; }; static struct dummy_hcd_module_parameters mod_data = { .is_super_speed = false, .is_high_speed = true, + .num = 1, }; module_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); MODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); module_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO); MODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection"); +module_param_named(num, mod_data.num, uint, S_IRUGO); +MODULE_PARM_DESC(num, "number of emulated controllers"); /*-------------------------------------------------------------------------*/ /* gadget side driver data structres */ @@ -83,10 +86,11 @@ struct dummy_ep { struct usb_gadget *gadget; const struct usb_endpoint_descriptor *desc; struct usb_ep ep; - unsigned halted : 1; - unsigned wedged : 1; - unsigned already_seen : 1; - unsigned setup_stage : 1; + unsigned halted:1; + unsigned wedged:1; + unsigned already_seen:1; + unsigned setup_stage:1; + unsigned stream_en:1; }; struct dummy_request { @@ -94,15 +98,15 @@ struct dummy_request { struct usb_request req; }; -static inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) +static inline struct dummy_ep *usb_ep_to_dummy_ep(struct usb_ep *_ep) { - return container_of (_ep, struct dummy_ep, ep); + return container_of(_ep, struct dummy_ep, ep); } static inline struct dummy_request *usb_request_to_dummy_request (struct usb_request *_req) { - return container_of (_req, struct dummy_request, req); + return container_of(_req, struct dummy_request, req); } /*-------------------------------------------------------------------------*/ @@ -121,15 +125,12 @@ static inline struct dummy_request *usb_request_to_dummy_request * configurations, illegal or unsupported packet lengths, and so on. */ -static const char ep0name [] = "ep0"; +static const char ep0name[] = "ep0"; -static const char *const ep_name [] = { +static const char *const ep_name[] = { ep0name, /* everyone has ep0 */ - /* act like a net2280: high speed, six configurable endpoints */ - "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", - - /* or like pxa250: fifteen fixed function endpoints */ + /* act like a pxa250: fifteen fixed function endpoints */ "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", @@ -137,6 +138,10 @@ static const char *const ep_name [] = { /* or like sa1100: two fixed function endpoints */ "ep1out-bulk", "ep2in-bulk", + + /* and now some generic EPs so we have enough in multi config */ + "ep3out", "ep4in", "ep5out", "ep6out", "ep7in", "ep8out", "ep9in", + "ep10out", "ep11out", "ep12in", "ep13out", "ep14in", "ep15out", }; #define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) @@ -147,6 +152,8 @@ static const char *const ep_name [] = { struct urbp { struct urb *urb; struct list_head urbp_list; + struct sg_mapping_iter miter; + u32 miter_started; }; @@ -166,6 +173,8 @@ struct dummy_hcd { struct usb_device *udev; struct list_head urbp_list; + u32 stream_en_ep; + u8 num_stream[30 / 2]; unsigned active:1; unsigned old_active:1; @@ -178,12 +187,12 @@ struct dummy { /* * SLAVE/GADGET side support */ - struct dummy_ep ep [DUMMY_ENDPOINTS]; + struct dummy_ep ep[DUMMY_ENDPOINTS]; int address; struct usb_gadget gadget; struct usb_gadget_driver *driver; struct dummy_request fifo_req; - u8 fifo_buf [FIFO_SIZE]; + u8 fifo_buf[FIFO_SIZE]; u16 devstatus; unsigned udc_suspended:1; unsigned pullup:1; @@ -210,14 +219,14 @@ static inline struct device *dummy_dev(struct dummy_hcd *dum) return dummy_hcd_to_hcd(dum)->self.controller; } -static inline struct device *udc_dev (struct dummy *dum) +static inline struct device *udc_dev(struct dummy *dum) { return dum->gadget.dev.parent; } -static inline struct dummy *ep_to_dummy (struct dummy_ep *ep) +static inline struct dummy *ep_to_dummy(struct dummy_ep *ep) { - return container_of (ep->gadget, struct dummy, gadget); + return container_of(ep->gadget, struct dummy, gadget); } static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) @@ -229,36 +238,33 @@ static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) return dum->hs_hcd; } -static inline struct dummy *gadget_dev_to_dummy (struct device *dev) +static inline struct dummy *gadget_dev_to_dummy(struct device *dev) { - return container_of (dev, struct dummy, gadget.dev); + return container_of(dev, struct dummy, gadget.dev); } -static struct dummy the_controller; - /*-------------------------------------------------------------------------*/ /* SLAVE/GADGET SIDE UTILITY ROUTINES */ /* called with spinlock held */ -static void nuke (struct dummy *dum, struct dummy_ep *ep) +static void nuke(struct dummy *dum, struct dummy_ep *ep) { - while (!list_empty (&ep->queue)) { + while (!list_empty(&ep->queue)) { struct dummy_request *req; - req = list_entry (ep->queue.next, struct dummy_request, queue); - list_del_init (&req->queue); + req = list_entry(ep->queue.next, struct dummy_request, queue); + list_del_init(&req->queue); req->req.status = -ESHUTDOWN; - spin_unlock (&dum->lock); - req->req.complete (&ep->ep, &req->req); - spin_lock (&dum->lock); + spin_unlock(&dum->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&dum->lock); } } /* caller must hold lock */ -static void -stop_activity (struct dummy *dum) +static void stop_activity(struct dummy *dum) { struct dummy_ep *ep; @@ -268,8 +274,8 @@ stop_activity (struct dummy *dum) /* The timer is left running so that outstanding URBs can fail */ /* nuke any pending requests first, so driver i/o is quiesced */ - list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) - nuke (dum, ep); + list_for_each_entry(ep, &dum->gadget.ep_list, ep.ep_list) + nuke(dum, ep); /* driver now does any non-usb quiescing necessary */ } @@ -404,8 +410,8 @@ static void set_link_state(struct dummy_hcd *dum_hcd) #define is_enabled(dum) \ (dum->port_status & USB_PORT_STAT_ENABLE) -static int -dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) +static int dummy_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) { struct dummy *dum; struct dummy_hcd *dum_hcd; @@ -413,11 +419,11 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) unsigned max; int retval; - ep = usb_ep_to_dummy_ep (_ep); + ep = usb_ep_to_dummy_ep(_ep); if (!_ep || !desc || ep->desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT) return -EINVAL; - dum = ep_to_dummy (ep); + dum = ep_to_dummy(ep); if (!dum->driver) return -ESHUTDOWN; @@ -441,10 +447,10 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) * especially for "ep9out" style fixed function ones.) */ retval = -EINVAL; - switch (desc->bmAttributes & 0x03) { + switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_BULK: - if (strstr (ep->ep.name, "-iso") - || strstr (ep->ep.name, "-int")) { + if (strstr(ep->ep.name, "-iso") + || strstr(ep->ep.name, "-int")) { goto done; } switch (dum->gadget.speed) { @@ -466,7 +472,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) } break; case USB_ENDPOINT_XFER_INT: - if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ + if (strstr(ep->ep.name, "-iso")) /* bulk is ok */ goto done; /* real hardware might not handle all packet sizes */ switch (dum->gadget.speed) { @@ -486,8 +492,8 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) } break; case USB_ENDPOINT_XFER_ISOC: - if (strstr (ep->ep.name, "-bulk") - || strstr (ep->ep.name, "-int")) + if (strstr(ep->ep.name, "-bulk") + || strstr(ep->ep.name, "-int")) goto done; /* real hardware might not handle all packet sizes */ switch (dum->gadget.speed) { @@ -510,14 +516,22 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) } _ep->maxpacket = max; + if (usb_ss_max_streams(_ep->comp_desc)) { + if (!usb_endpoint_xfer_bulk(desc)) { + dev_err(udc_dev(dum), "Can't enable stream support on " + "non-bulk ep %s\n", _ep->name); + return -EINVAL; + } + ep->stream_en = 1; + } ep->desc = desc; - dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", + dev_dbg(udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d stream %s\n", _ep->name, desc->bEndpointAddress & 0x0f, (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", ({ char *val; - switch (desc->bmAttributes & 0x03) { + switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_BULK: val = "bulk"; break; @@ -530,8 +544,8 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) default: val = "ctrl"; break; - }; val; }), - max); + } val; }), + max, ep->stream_en ? "enabled" : "disabled"); /* at this point real hardware should be NAKing transfers * to that endpoint, until a buffer is queued to it. @@ -542,67 +556,63 @@ done: return retval; } -static int dummy_disable (struct usb_ep *_ep) +static int dummy_disable(struct usb_ep *_ep) { struct dummy_ep *ep; struct dummy *dum; unsigned long flags; - int retval; - ep = usb_ep_to_dummy_ep (_ep); + ep = usb_ep_to_dummy_ep(_ep); if (!_ep || !ep->desc || _ep->name == ep0name) return -EINVAL; - dum = ep_to_dummy (ep); + dum = ep_to_dummy(ep); - spin_lock_irqsave (&dum->lock, flags); + spin_lock_irqsave(&dum->lock, flags); ep->desc = NULL; - retval = 0; - nuke (dum, ep); - spin_unlock_irqrestore (&dum->lock, flags); + ep->stream_en = 0; + nuke(dum, ep); + spin_unlock_irqrestore(&dum->lock, flags); - dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); - return retval; + dev_dbg(udc_dev(dum), "disabled %s\n", _ep->name); + return 0; } -static struct usb_request * -dummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) +static struct usb_request *dummy_alloc_request(struct usb_ep *_ep, + gfp_t mem_flags) { struct dummy_ep *ep; struct dummy_request *req; if (!_ep) return NULL; - ep = usb_ep_to_dummy_ep (_ep); + ep = usb_ep_to_dummy_ep(_ep); req = kzalloc(sizeof(*req), mem_flags); if (!req) return NULL; - INIT_LIST_HEAD (&req->queue); + INIT_LIST_HEAD(&req->queue); return &req->req; } -static void -dummy_free_request (struct usb_ep *_ep, struct usb_request *_req) +static void dummy_free_request(struct usb_ep *_ep, struct usb_request *_req) { - struct dummy_ep *ep; struct dummy_request *req; - ep = usb_ep_to_dummy_ep (_ep); - if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) + if (!_ep || !_req) { + WARN_ON(1); return; + } - req = usb_request_to_dummy_request (_req); - WARN_ON (!list_empty (&req->queue)); - kfree (req); + req = usb_request_to_dummy_request(_req); + WARN_ON(!list_empty(&req->queue)); + kfree(req); } -static void -fifo_complete (struct usb_ep *ep, struct usb_request *req) +static void fifo_complete(struct usb_ep *ep, struct usb_request *req) { } -static int -dummy_queue (struct usb_ep *_ep, struct usb_request *_req, +static int dummy_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t mem_flags) { struct dummy_ep *ep; @@ -611,49 +621,48 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req, struct dummy_hcd *dum_hcd; unsigned long flags; - req = usb_request_to_dummy_request (_req); - if (!_req || !list_empty (&req->queue) || !_req->complete) + req = usb_request_to_dummy_request(_req); + if (!_req || !list_empty(&req->queue) || !_req->complete) return -EINVAL; - ep = usb_ep_to_dummy_ep (_ep); + ep = usb_ep_to_dummy_ep(_ep); if (!_ep || (!ep->desc && _ep->name != ep0name)) return -EINVAL; - dum = ep_to_dummy (ep); + dum = ep_to_dummy(ep); dum_hcd = gadget_to_dummy_hcd(&dum->gadget); if (!dum->driver || !is_enabled(dum_hcd)) return -ESHUTDOWN; #if 0 - dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", + dev_dbg(udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", ep, _req, _ep->name, _req->length, _req->buf); #endif - _req->status = -EINPROGRESS; _req->actual = 0; - spin_lock_irqsave (&dum->lock, flags); + spin_lock_irqsave(&dum->lock, flags); /* implement an emulated single-request FIFO */ if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && - list_empty (&dum->fifo_req.queue) && - list_empty (&ep->queue) && + list_empty(&dum->fifo_req.queue) && + list_empty(&ep->queue) && _req->length <= FIFO_SIZE) { req = &dum->fifo_req; req->req = *_req; req->req.buf = dum->fifo_buf; - memcpy (dum->fifo_buf, _req->buf, _req->length); + memcpy(dum->fifo_buf, _req->buf, _req->length); req->req.context = dum; req->req.complete = fifo_complete; list_add_tail(&req->queue, &ep->queue); - spin_unlock (&dum->lock); + spin_unlock(&dum->lock); _req->actual = _req->length; _req->status = 0; - _req->complete (_ep, _req); - spin_lock (&dum->lock); + _req->complete(_ep, _req); + spin_lock(&dum->lock); } else list_add_tail(&req->queue, &ep->queue); - spin_unlock_irqrestore (&dum->lock, flags); + spin_unlock_irqrestore(&dum->lock, flags); /* real hardware would likely enable transfers here, in case * it'd been left NAKing. @@ -661,7 +670,7 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req, return 0; } -static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) +static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req) { struct dummy_ep *ep; struct dummy *dum; @@ -671,31 +680,31 @@ static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) if (!_ep || !_req) return retval; - ep = usb_ep_to_dummy_ep (_ep); - dum = ep_to_dummy (ep); + ep = usb_ep_to_dummy_ep(_ep); + dum = ep_to_dummy(ep); if (!dum->driver) return -ESHUTDOWN; - local_irq_save (flags); - spin_lock (&dum->lock); - list_for_each_entry (req, &ep->queue, queue) { + local_irq_save(flags); + spin_lock(&dum->lock); + list_for_each_entry(req, &ep->queue, queue) { if (&req->req == _req) { - list_del_init (&req->queue); + list_del_init(&req->queue); _req->status = -ECONNRESET; retval = 0; break; } } - spin_unlock (&dum->lock); + spin_unlock(&dum->lock); if (retval == 0) { - dev_dbg (udc_dev(dum), + dev_dbg(udc_dev(dum), "dequeued req %p from %s, len %d buf %p\n", req, _ep->name, _req->length, _req->buf); - _req->complete (_ep, _req); + _req->complete(_ep, _req); } - local_irq_restore (flags); + local_irq_restore(flags); return retval; } @@ -707,14 +716,14 @@ dummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) if (!_ep) return -EINVAL; - ep = usb_ep_to_dummy_ep (_ep); - dum = ep_to_dummy (ep); + ep = usb_ep_to_dummy_ep(_ep); + dum = ep_to_dummy(ep); if (!dum->driver) return -ESHUTDOWN; if (!value) ep->halted = ep->wedged = 0; else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && - !list_empty (&ep->queue)) + !list_empty(&ep->queue)) return -EAGAIN; else { ep->halted = 1; @@ -755,15 +764,15 @@ static const struct usb_ep_ops dummy_ep_ops = { /*-------------------------------------------------------------------------*/ /* there are both host and device side versions of this call ... */ -static int dummy_g_get_frame (struct usb_gadget *_gadget) +static int dummy_g_get_frame(struct usb_gadget *_gadget) { struct timeval tv; - do_gettimeofday (&tv); + do_gettimeofday(&tv); return tv.tv_usec / 1000; } -static int dummy_wakeup (struct usb_gadget *_gadget) +static int dummy_wakeup(struct usb_gadget *_gadget) { struct dummy_hcd *dum_hcd; @@ -786,11 +795,11 @@ static int dummy_wakeup (struct usb_gadget *_gadget) return 0; } -static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) +static int dummy_set_selfpowered(struct usb_gadget *_gadget, int value) { struct dummy *dum; - dum = (gadget_to_dummy_hcd(_gadget))->dum; + dum = gadget_to_dummy_hcd(_gadget)->dum; if (value) dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); else @@ -798,22 +807,15 @@ static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) return 0; } -static void dummy_udc_udpate_ep0(struct dummy *dum) +static void dummy_udc_update_ep0(struct dummy *dum) { - u32 i; - - if (dum->gadget.speed == USB_SPEED_SUPER) { - for (i = 0; i < DUMMY_ENDPOINTS; i++) - dum->ep[i].ep.max_streams = 0x10; + if (dum->gadget.speed == USB_SPEED_SUPER) dum->ep[0].ep.maxpacket = 9; - } else { - for (i = 0; i < DUMMY_ENDPOINTS; i++) - dum->ep[i].ep.max_streams = 0; + else dum->ep[0].ep.maxpacket = 64; - } } -static int dummy_pullup (struct usb_gadget *_gadget, int value) +static int dummy_pullup(struct usb_gadget *_gadget, int value) { struct dummy_hcd *dum_hcd; struct dummy *dum; @@ -829,7 +831,7 @@ static int dummy_pullup (struct usb_gadget *_gadget, int value) dum->driver->max_speed); else dum->gadget.speed = USB_SPEED_FULL; - dummy_udc_udpate_ep0(dum); + dummy_udc_update_ep0(dum); if (dum->gadget.speed < dum->driver->max_speed) dev_dbg(udc_dev(dum), "This device can perform faster" @@ -838,10 +840,10 @@ static int dummy_pullup (struct usb_gadget *_gadget, int value) } dum_hcd = gadget_to_dummy_hcd(_gadget); - spin_lock_irqsave (&dum->lock, flags); + spin_lock_irqsave(&dum->lock, flags); dum->pullup = (value != 0); set_link_state(dum_hcd); - spin_unlock_irqrestore (&dum->lock, flags); + spin_unlock_irqrestore(&dum->lock, flags); usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); return 0; @@ -864,16 +866,16 @@ static const struct usb_gadget_ops dummy_ops = { /*-------------------------------------------------------------------------*/ /* "function" sysfs attribute */ -static ssize_t -show_function (struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t function_show(struct device *dev, struct device_attribute *attr, + char *buf) { - struct dummy *dum = gadget_dev_to_dummy (dev); + struct dummy *dum = gadget_dev_to_dummy(dev); if (!dum->driver || !dum->driver->function) return 0; - return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); + return scnprintf(buf, PAGE_SIZE, "%s\n", dum->driver->function); } -static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); +static DEVICE_ATTR_RO(function); /*-------------------------------------------------------------------------*/ @@ -908,7 +910,7 @@ static int dummy_udc_start(struct usb_gadget *g, dum->devstatus = 0; dum->driver = driver; - dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", + dev_dbg(udc_dev(dum), "binding gadget driver '%s'\n", driver->driver.name); return 0; } @@ -919,12 +921,12 @@ static int dummy_udc_stop(struct usb_gadget *g, struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); struct dummy *dum = dum_hcd->dum; - dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", - driver->driver.name); + if (driver) + dev_dbg(udc_dev(dum), "unregister gadget driver '%s'\n", + driver->driver.name); dum->driver = NULL; - dummy_pullup(&dum->gadget, 0); return 0; } @@ -932,12 +934,6 @@ static int dummy_udc_stop(struct usb_gadget *g, /* The gadget structure is stored inside the hcd structure and will be * released along with it. */ -static void -dummy_gadget_release (struct device *dev) -{ - return; -} - static void init_dummy_udc_hw(struct dummy *dum) { int i; @@ -953,7 +949,8 @@ static void init_dummy_udc_hw(struct dummy *dum) list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); ep->halted = ep->wedged = ep->already_seen = ep->setup_stage = 0; - ep->ep.maxpacket = ~0; + usb_ep_set_maxpacket_limit(&ep->ep, ~0); + ep->ep.max_streams = 16; ep->last_io = jiffies; ep->gadget = &dum->gadget; ep->desc = NULL; @@ -969,31 +966,24 @@ static void init_dummy_udc_hw(struct dummy *dum) #endif } -static int dummy_udc_probe (struct platform_device *pdev) +static int dummy_udc_probe(struct platform_device *pdev) { - struct dummy *dum = &the_controller; + struct dummy *dum; int rc; + dum = *((void **)dev_get_platdata(&pdev->dev)); dum->gadget.name = gadget_name; dum->gadget.ops = &dummy_ops; dum->gadget.max_speed = USB_SPEED_SUPER; - dev_set_name(&dum->gadget.dev, "gadget"); dum->gadget.dev.parent = &pdev->dev; - dum->gadget.dev.release = dummy_gadget_release; - rc = device_register (&dum->gadget.dev); - if (rc < 0) { - put_device(&dum->gadget.dev); - return rc; - } - init_dummy_udc_hw(dum); rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); if (rc < 0) goto err_udc; - rc = device_create_file (&dum->gadget.dev, &dev_attr_function); + rc = device_create_file(&dum->gadget.dev, &dev_attr_function); if (rc < 0) goto err_dev; platform_set_drvdata(pdev, dum); @@ -1002,18 +992,15 @@ static int dummy_udc_probe (struct platform_device *pdev) err_dev: usb_del_gadget_udc(&dum->gadget); err_udc: - device_unregister(&dum->gadget.dev); return rc; } -static int dummy_udc_remove (struct platform_device *pdev) +static int dummy_udc_remove(struct platform_device *pdev) { - struct dummy *dum = platform_get_drvdata (pdev); + struct dummy *dum = platform_get_drvdata(pdev); + device_remove_file(&dum->gadget.dev, &dev_attr_function); usb_del_gadget_udc(&dum->gadget); - platform_set_drvdata (pdev, NULL); - device_remove_file (&dum->gadget.dev, &dev_attr_function); - device_unregister (&dum->gadget.dev); return 0; } @@ -1061,6 +1048,16 @@ static struct platform_driver dummy_udc_driver = { /*-------------------------------------------------------------------------*/ +static unsigned int dummy_get_ep_idx(const struct usb_endpoint_descriptor *desc) +{ + unsigned int index; + + index = usb_endpoint_num(desc) << 1; + if (usb_endpoint_dir_in(desc)) + index |= 1; + return index; +} + /* MASTER/HOST SIDE DRIVER * * this uses the hcd framework to hook up to host side drivers. @@ -1073,7 +1070,82 @@ static struct platform_driver dummy_udc_driver = { * usb 2.0 rules. */ -static int dummy_urb_enqueue ( +static int dummy_ep_stream_en(struct dummy_hcd *dum_hcd, struct urb *urb) +{ + const struct usb_endpoint_descriptor *desc = &urb->ep->desc; + u32 index; + + if (!usb_endpoint_xfer_bulk(desc)) + return 0; + + index = dummy_get_ep_idx(desc); + return (1 << index) & dum_hcd->stream_en_ep; +} + +/* + * The max stream number is saved as a nibble so for the 30 possible endpoints + * we only 15 bytes of memory. Therefore we are limited to max 16 streams (0 + * means we use only 1 stream). The maximum according to the spec is 16bit so + * if the 16 stream limit is about to go, the array size should be incremented + * to 30 elements of type u16. + */ +static int get_max_streams_for_pipe(struct dummy_hcd *dum_hcd, + unsigned int pipe) +{ + int max_streams; + + max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)]; + if (usb_pipeout(pipe)) + max_streams >>= 4; + else + max_streams &= 0xf; + max_streams++; + return max_streams; +} + +static void set_max_streams_for_pipe(struct dummy_hcd *dum_hcd, + unsigned int pipe, unsigned int streams) +{ + int max_streams; + + streams--; + max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)]; + if (usb_pipeout(pipe)) { + streams <<= 4; + max_streams &= 0xf; + } else { + max_streams &= 0xf0; + } + max_streams |= streams; + dum_hcd->num_stream[usb_pipeendpoint(pipe)] = max_streams; +} + +static int dummy_validate_stream(struct dummy_hcd *dum_hcd, struct urb *urb) +{ + unsigned int max_streams; + int enabled; + + enabled = dummy_ep_stream_en(dum_hcd, urb); + if (!urb->stream_id) { + if (enabled) + return -EINVAL; + return 0; + } + if (!enabled) + return -EINVAL; + + max_streams = get_max_streams_for_pipe(dum_hcd, + usb_pipeendpoint(urb->pipe)); + if (urb->stream_id > max_streams) { + dev_err(dummy_dev(dum_hcd), "Stream id %d is out of range.\n", + urb->stream_id); + BUG(); + return -EINVAL; + } + return 0; +} + +static int dummy_urb_enqueue( struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags @@ -1083,16 +1155,21 @@ static int dummy_urb_enqueue ( unsigned long flags; int rc; - if (!urb->transfer_buffer && urb->transfer_buffer_length) - return -EINVAL; - - urbp = kmalloc (sizeof *urbp, mem_flags); + urbp = kmalloc(sizeof *urbp, mem_flags); if (!urbp) return -ENOMEM; urbp->urb = urb; + urbp->miter_started = 0; dum_hcd = hcd_to_dummy_hcd(hcd); spin_lock_irqsave(&dum_hcd->dum->lock, flags); + + rc = dummy_validate_stream(dum_hcd, urb); + if (rc) { + kfree(urbp); + goto done; + } + rc = usb_hcd_link_urb_to_ep(hcd, urb); if (rc) { kfree(urbp); @@ -1107,7 +1184,7 @@ static int dummy_urb_enqueue ( list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); urb->hcpriv = urbp; - if (usb_pipetype (urb->pipe) == PIPE_CONTROL) + if (usb_pipetype(urb->pipe) == PIPE_CONTROL) urb->error_count = 1; /* mark as a new urb */ /* kick the scheduler, it'll do the rest */ @@ -1139,20 +1216,91 @@ static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) return rc; } +static int dummy_perform_transfer(struct urb *urb, struct dummy_request *req, + u32 len) +{ + void *ubuf, *rbuf; + struct urbp *urbp = urb->hcpriv; + int to_host; + struct sg_mapping_iter *miter = &urbp->miter; + u32 trans = 0; + u32 this_sg; + bool next_sg; + + to_host = usb_pipein(urb->pipe); + rbuf = req->req.buf + req->req.actual; + + if (!urb->num_sgs) { + ubuf = urb->transfer_buffer + urb->actual_length; + if (to_host) + memcpy(ubuf, rbuf, len); + else + memcpy(rbuf, ubuf, len); + return len; + } + + if (!urbp->miter_started) { + u32 flags = SG_MITER_ATOMIC; + + if (to_host) + flags |= SG_MITER_TO_SG; + else + flags |= SG_MITER_FROM_SG; + + sg_miter_start(miter, urb->sg, urb->num_sgs, flags); + urbp->miter_started = 1; + } + next_sg = sg_miter_next(miter); + if (next_sg == false) { + WARN_ON_ONCE(1); + return -EINVAL; + } + do { + ubuf = miter->addr; + this_sg = min_t(u32, len, miter->length); + miter->consumed = this_sg; + trans += this_sg; + + if (to_host) + memcpy(ubuf, rbuf, this_sg); + else + memcpy(rbuf, ubuf, this_sg); + len -= this_sg; + + if (!len) + break; + next_sg = sg_miter_next(miter); + if (next_sg == false) { + WARN_ON_ONCE(1); + return -EINVAL; + } + + rbuf += this_sg; + } while (1); + + sg_miter_stop(miter); + return trans; +} + /* transfer up to a frame's worth; caller must own lock */ -static int -transfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, - int *status) +static int transfer(struct dummy_hcd *dum_hcd, struct urb *urb, + struct dummy_ep *ep, int limit, int *status) { + struct dummy *dum = dum_hcd->dum; struct dummy_request *req; top: /* if there's no request queued, the device is NAKing; return */ - list_for_each_entry (req, &ep->queue, queue) { + list_for_each_entry(req, &ep->queue, queue) { unsigned host_len, dev_len, len; int is_short, to_host; int rescan = 0; + if (dummy_ep_stream_en(dum_hcd, urb)) { + if ((urb->stream_id != req->req.stream_id)) + continue; + } + /* 1..N packets of ep->ep.maxpacket each ... the last one * may be short (including zero length). * @@ -1162,20 +1310,18 @@ top: */ host_len = urb->transfer_buffer_length - urb->actual_length; dev_len = req->req.length - req->req.actual; - len = min (host_len, dev_len); + len = min(host_len, dev_len); /* FIXME update emulated data toggle too */ - to_host = usb_pipein (urb->pipe); - if (unlikely (len == 0)) + to_host = usb_pipein(urb->pipe); + if (unlikely(len == 0)) is_short = 1; else { - char *ubuf, *rbuf; - /* not enough bandwidth left? */ if (limit < ep->ep.maxpacket && limit < len) break; - len = min (len, (unsigned) limit); + len = min_t(unsigned, len, limit); if (len == 0) break; @@ -1186,18 +1332,16 @@ top: } is_short = (len % ep->ep.maxpacket) != 0; - /* else transfer packet(s) */ - ubuf = urb->transfer_buffer + urb->actual_length; - rbuf = req->req.buf + req->req.actual; - if (to_host) - memcpy (ubuf, rbuf, len); - else - memcpy (rbuf, ubuf, len); - ep->last_io = jiffies; + len = dummy_perform_transfer(urb, req, len); - limit -= len; - urb->actual_length += len; - req->req.actual += len; + ep->last_io = jiffies; + if ((int)len < 0) { + req->req.status = len; + } else { + limit -= len; + urb->actual_length += len; + req->req.actual += len; + } } /* short packets terminate, maybe with overflow/underflow. @@ -1238,11 +1382,11 @@ top: /* device side completion --> continuable */ if (req->req.status != -EINPROGRESS) { - list_del_init (&req->queue); + list_del_init(&req->queue); - spin_unlock (&dum->lock); - req->req.complete (&ep->ep, &req->req); - spin_lock (&dum->lock); + spin_unlock(&dum->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&dum->lock); /* requests might have been unlinked... */ rescan = 1; @@ -1259,7 +1403,7 @@ top: return limit; } -static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) +static int periodic_bytes(struct dummy *dum, struct dummy_ep *ep) { int limit = ep->ep.maxpacket; @@ -1273,7 +1417,7 @@ static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) limit += limit * tmp; } if (dum->gadget.speed == USB_SPEED_SUPER) { - switch (ep->desc->bmAttributes & 0x03) { + switch (usb_endpoint_type(ep->desc)) { case USB_ENDPOINT_XFER_ISOC: /* Sec. 4.4.8.2 USB3.0 Spec */ limit = 3 * 16 * 1024 * 8; @@ -1295,7 +1439,7 @@ static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) USB_PORT_STAT_SUSPEND)) \ == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) -static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) +static struct dummy_ep *find_endpoint(struct dummy *dum, u8 address) { int i; @@ -1303,9 +1447,9 @@ static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) dum->ss_hcd : dum->hs_hcd))) return NULL; if ((address & ~USB_DIR_IN) == 0) - return &dum->ep [0]; + return &dum->ep[0]; for (i = 1; i < DUMMY_ENDPOINTS; i++) { - struct dummy_ep *ep = &dum->ep [i]; + struct dummy_ep *ep = &dum->ep[i]; if (!ep->desc) continue; @@ -1535,19 +1679,19 @@ static void dummy_timer(unsigned long _dum_hcd) /* FIXME if HZ != 1000 this will probably misbehave ... */ /* look at each urb queued by the host side driver */ - spin_lock_irqsave (&dum->lock, flags); + spin_lock_irqsave(&dum->lock, flags); if (!dum_hcd->udev) { dev_err(dummy_dev(dum_hcd), "timer fired with no URBs pending?\n"); - spin_unlock_irqrestore (&dum->lock, flags); + spin_unlock_irqrestore(&dum->lock, flags); return; } for (i = 0; i < DUMMY_ENDPOINTS; i++) { - if (!ep_name [i]) + if (!ep_name[i]) break; - dum->ep [i].already_seen = 0; + dum->ep[i].already_seen = 0; } restart: @@ -1564,7 +1708,7 @@ restart: goto return_urb; else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) continue; - type = usb_pipetype (urb->pipe); + type = usb_pipetype(urb->pipe); /* used up this frame's non-periodic bandwidth? * FIXME there's infinite bandwidth for control and @@ -1575,7 +1719,7 @@ restart: /* find the gadget's ep for this request (if configured) */ address = usb_pipeendpoint (urb->pipe); - if (usb_pipein (urb->pipe)) + if (usb_pipein(urb->pipe)) address |= USB_DIR_IN; ep = find_endpoint(dum, address); if (!ep) { @@ -1590,7 +1734,7 @@ restart: if (ep->already_seen) continue; ep->already_seen = 1; - if (ep == &dum->ep [0] && urb->error_count) { + if (ep == &dum->ep[0] && urb->error_count) { ep->setup_stage = 1; /* a new urb */ urb->error_count = 0; } @@ -1604,21 +1748,21 @@ restart: /* FIXME make sure both ends agree on maxpacket */ /* handle control requests */ - if (ep == &dum->ep [0] && ep->setup_stage) { + if (ep == &dum->ep[0] && ep->setup_stage) { struct usb_ctrlrequest setup; int value = 1; - setup = *(struct usb_ctrlrequest*) urb->setup_packet; + setup = *(struct usb_ctrlrequest *) urb->setup_packet; /* paranoia, in case of stale queued data */ - list_for_each_entry (req, &ep->queue, queue) { - list_del_init (&req->queue); + list_for_each_entry(req, &ep->queue, queue) { + list_del_init(&req->queue); req->req.status = -EOVERFLOW; - dev_dbg (udc_dev(dum), "stale req = %p\n", + dev_dbg(udc_dev(dum), "stale req = %p\n", req); - spin_unlock (&dum->lock); - req->req.complete (&ep->ep, &req->req); - spin_lock (&dum->lock); + spin_unlock(&dum->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&dum->lock); ep->already_seen = 0; goto restart; } @@ -1638,10 +1782,10 @@ restart: * until setup() returns; no reentrancy issues etc. */ if (value > 0) { - spin_unlock (&dum->lock); - value = dum->driver->setup (&dum->gadget, + spin_unlock(&dum->lock); + value = dum->driver->setup(&dum->gadget, &setup); - spin_lock (&dum->lock); + spin_lock(&dum->lock); if (value >= 0) { /* no delays (max 64KB data stage) */ @@ -1653,7 +1797,7 @@ restart: if (value < 0) { if (value != -EOPNOTSUPP) - dev_dbg (udc_dev(dum), + dev_dbg(udc_dev(dum), "setup --> %d\n", value); status = -EPIPE; @@ -1665,14 +1809,14 @@ restart: /* non-control requests */ limit = total; - switch (usb_pipetype (urb->pipe)) { + switch (usb_pipetype(urb->pipe)) { case PIPE_ISOCHRONOUS: /* FIXME is it urb->interval since the last xfer? * use urb->iso_frame_desc[i]. * complete whether or not ep has requests queued. * report random errors, to debug drivers. */ - limit = max (limit, periodic_bytes (dum, ep)); + limit = max(limit, periodic_bytes(dum, ep)); status = -ENOSYS; break; @@ -1680,14 +1824,13 @@ restart: /* FIXME is it urb->interval since the last xfer? * this almost certainly polls too fast. */ - limit = max (limit, periodic_bytes (dum, ep)); + limit = max(limit, periodic_bytes(dum, ep)); /* FALLTHROUGH */ - // case PIPE_BULK: case PIPE_CONTROL: default: - treat_control_like_bulk: +treat_control_like_bulk: ep->last_io = jiffies; - total = transfer(dum, urb, ep, limit, &status); + total = transfer(dum_hcd, urb, ep, limit, &status); break; } @@ -1696,15 +1839,15 @@ restart: continue; return_urb: - list_del (&urbp->urbp_list); - kfree (urbp); + list_del(&urbp->urbp_list); + kfree(urbp); if (ep) ep->already_seen = ep->setup_stage = 0; usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); - spin_unlock (&dum->lock); + spin_unlock(&dum->lock); usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); - spin_lock (&dum->lock); + spin_lock(&dum->lock); goto restart; } @@ -1717,7 +1860,7 @@ return_urb: mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); } - spin_unlock_irqrestore (&dum->lock, flags); + spin_unlock_irqrestore(&dum->lock, flags); } /*-------------------------------------------------------------------------*/ @@ -1729,7 +1872,7 @@ return_urb: | USB_PORT_STAT_C_OVERCURRENT \ | USB_PORT_STAT_C_RESET) << 16) -static int dummy_hub_status (struct usb_hcd *hcd, char *buf) +static int dummy_hub_status(struct usb_hcd *hcd, char *buf) { struct dummy_hcd *dum_hcd; unsigned long flags; @@ -1753,13 +1896,34 @@ static int dummy_hub_status (struct usb_hcd *hcd, char *buf) dum_hcd->port_status); retval = 1; if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) - usb_hcd_resume_root_hub (hcd); + usb_hcd_resume_root_hub(hcd); } done: spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); return retval; } +/* usb 3.0 root hub device descriptor */ +static struct { + struct usb_bos_descriptor bos; + struct usb_ss_cap_descriptor ss_cap; +} __packed usb3_bos_desc = { + + .bos = { + .bLength = USB_DT_BOS_SIZE, + .bDescriptorType = USB_DT_BOS, + .wTotalLength = cpu_to_le16(sizeof(usb3_bos_desc)), + .bNumDeviceCaps = 1, + }, + .ss_cap = { + .bLength = USB_DT_USB_SS_CAP_SIZE, + .bDescriptorType = USB_DT_DEVICE_CAPABILITY, + .bDevCapabilityType = USB_SS_CAP_TYPE, + .wSpeedSupported = cpu_to_le16(USB_5GBPS_OPERATION), + .bFunctionalitySupport = ilog2(USB_5GBPS_OPERATION), + }, +}; + static inline void ss_hub_descriptor(struct usb_hub_descriptor *desc) { @@ -1772,10 +1936,9 @@ ss_hub_descriptor(struct usb_hub_descriptor *desc) desc->u.ss.DeviceRemovable = 0xffff; } -static inline void -hub_descriptor (struct usb_hub_descriptor *desc) +static inline void hub_descriptor(struct usb_hub_descriptor *desc) { - memset (desc, 0, sizeof *desc); + memset(desc, 0, sizeof *desc); desc->bDescriptorType = 0x29; desc->bDescLength = 9; desc->wHubCharacteristics = cpu_to_le16(0x0001); @@ -1784,7 +1947,7 @@ hub_descriptor (struct usb_hub_descriptor *desc) desc->u.hs.DeviceRemovable[1] = 0xff; } -static int dummy_hub_control ( +static int dummy_hub_control( struct usb_hcd *hcd, u16 typeReq, u16 wValue, @@ -1851,8 +2014,20 @@ static int dummy_hub_control ( else hub_descriptor((struct usb_hub_descriptor *) buf); break; + + case DeviceRequest | USB_REQ_GET_DESCRIPTOR: + if (hcd->speed != HCD_USB3) + goto error; + + if ((wValue >> 8) != USB_DT_BOS) + goto error; + + memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc)); + retval = sizeof(usb3_bos_desc); + break; + case GetHubStatus: - *(__le32 *) buf = cpu_to_le32 (0); + *(__le32 *) buf = cpu_to_le32(0); break; case GetPortStatus: if (wIndex != 1) @@ -1894,8 +2069,8 @@ static int dummy_hub_control ( } } set_link_state(dum_hcd); - ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); - ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); + ((__le16 *) buf)[0] = cpu_to_le16(dum_hcd->port_status); + ((__le16 *) buf)[1] = cpu_to_le16(dum_hcd->port_status >> 16); break; case SetHubFeature: retval = -EPIPE; @@ -2029,15 +2204,15 @@ error: spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); if ((dum_hcd->port_status & PORT_C_MASK) != 0) - usb_hcd_poll_rh_status (hcd); + usb_hcd_poll_rh_status(hcd); return retval; } -static int dummy_bus_suspend (struct usb_hcd *hcd) +static int dummy_bus_suspend(struct usb_hcd *hcd) { struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); - dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); + dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); spin_lock_irq(&dum_hcd->dum->lock); dum_hcd->rh_state = DUMMY_RH_SUSPENDED; @@ -2047,12 +2222,12 @@ static int dummy_bus_suspend (struct usb_hcd *hcd) return 0; } -static int dummy_bus_resume (struct usb_hcd *hcd) +static int dummy_bus_resume(struct usb_hcd *hcd) { struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); int rc = 0; - dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); + dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); spin_lock_irq(&dum_hcd->dum->lock); if (!HCD_HW_ACCESSIBLE(hcd)) { @@ -2070,55 +2245,54 @@ static int dummy_bus_resume (struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -static inline ssize_t -show_urb (char *buf, size_t size, struct urb *urb) +static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb) { - int ep = usb_pipeendpoint (urb->pipe); + int ep = usb_pipeendpoint(urb->pipe); - return snprintf (buf, size, + return snprintf(buf, size, "urb/%p %s ep%d%s%s len %d/%d\n", urb, ({ char *s; - switch (urb->dev->speed) { - case USB_SPEED_LOW: + switch (urb->dev->speed) { + case USB_SPEED_LOW: s = "ls"; break; - case USB_SPEED_FULL: + case USB_SPEED_FULL: s = "fs"; break; - case USB_SPEED_HIGH: + case USB_SPEED_HIGH: s = "hs"; break; - case USB_SPEED_SUPER: + case USB_SPEED_SUPER: s = "ss"; break; - default: + default: s = "?"; break; - }; s; }), - ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", + } s; }), + ep, ep ? (usb_pipein(urb->pipe) ? "in" : "out") : "", ({ char *s; \ - switch (usb_pipetype (urb->pipe)) { \ - case PIPE_CONTROL: \ + switch (usb_pipetype(urb->pipe)) { \ + case PIPE_CONTROL: \ s = ""; \ break; \ - case PIPE_BULK: \ + case PIPE_BULK: \ s = "-bulk"; \ break; \ - case PIPE_INTERRUPT: \ + case PIPE_INTERRUPT: \ s = "-int"; \ break; \ - default: \ + default: \ s = "-iso"; \ break; \ - }; s;}), + } s; }), urb->actual_length, urb->transfer_buffer_length); } -static ssize_t -show_urbs (struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t urbs_show(struct device *dev, struct device_attribute *attr, + char *buf) { - struct usb_hcd *hcd = dev_get_drvdata (dev); + struct usb_hcd *hcd = dev_get_drvdata(dev); struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); struct urbp *urbp; size_t size = 0; @@ -2128,7 +2302,7 @@ show_urbs (struct device *dev, struct device_attribute *attr, char *buf) list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { size_t temp; - temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); + temp = show_urb(buf, PAGE_SIZE - size, urbp->urb); buf += temp; size += temp; } @@ -2136,7 +2310,7 @@ show_urbs (struct device *dev, struct device_attribute *attr, char *buf) return size; } -static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); +static DEVICE_ATTR_RO(urbs); static int dummy_start_ss(struct dummy_hcd *dum_hcd) { @@ -2144,6 +2318,7 @@ static int dummy_start_ss(struct dummy_hcd *dum_hcd) dum_hcd->timer.function = dummy_timer; dum_hcd->timer.data = (unsigned long)dum_hcd; dum_hcd->rh_state = DUMMY_RH_RUNNING; + dum_hcd->stream_en_ep = 0; INIT_LIST_HEAD(&dum_hcd->urbp_list); dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; @@ -2189,11 +2364,11 @@ static int dummy_start(struct usb_hcd *hcd) return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); } -static void dummy_stop (struct usb_hcd *hcd) +static void dummy_stop(struct usb_hcd *hcd) { struct dummy *dum; - dum = (hcd_to_dummy_hcd(hcd))->dum; + dum = hcd_to_dummy_hcd(hcd)->dum; device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); usb_gadget_unregister_driver(dum->driver); dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); @@ -2201,16 +2376,20 @@ static void dummy_stop (struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -static int dummy_h_get_frame (struct usb_hcd *hcd) +static int dummy_h_get_frame(struct usb_hcd *hcd) { - return dummy_g_get_frame (NULL); + return dummy_g_get_frame(NULL); } static int dummy_setup(struct usb_hcd *hcd) { + struct dummy *dum; + + dum = *((void **)dev_get_platdata(hcd->self.controller)); + hcd->self.sg_tablesize = ~0; if (usb_hcd_is_primary_hcd(hcd)) { - the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); - the_controller.hs_hcd->dum = &the_controller; + dum->hs_hcd = hcd_to_dummy_hcd(hcd); + dum->hs_hcd->dum = dum; /* * Mark the first roothub as being USB 2.0. * The USB 3.0 roothub will be registered later by @@ -2219,8 +2398,8 @@ static int dummy_setup(struct usb_hcd *hcd) hcd->speed = HCD_USB2; hcd->self.root_hub->speed = USB_SPEED_HIGH; } else { - the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); - the_controller.ss_hcd->dum = &the_controller; + dum->ss_hcd = hcd_to_dummy_hcd(hcd); + dum->ss_hcd->dum = dum; hcd->speed = HCD_USB3; hcd->self.root_hub->speed = USB_SPEED_SUPER; } @@ -2228,27 +2407,82 @@ static int dummy_setup(struct usb_hcd *hcd) } /* Change a group of bulk endpoints to support multiple stream IDs */ -int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, +static int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint **eps, unsigned int num_eps, unsigned int num_streams, gfp_t mem_flags) { - if (hcd->speed != HCD_USB3) - dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), - "%s() - ERROR! Not supported for USB2.0 roothub\n", - __func__); - return 0; + struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); + unsigned long flags; + int max_stream; + int ret_streams = num_streams; + unsigned int index; + unsigned int i; + + if (!num_eps) + return -EINVAL; + + spin_lock_irqsave(&dum_hcd->dum->lock, flags); + for (i = 0; i < num_eps; i++) { + index = dummy_get_ep_idx(&eps[i]->desc); + if ((1 << index) & dum_hcd->stream_en_ep) { + ret_streams = -EINVAL; + goto out; + } + max_stream = usb_ss_max_streams(&eps[i]->ss_ep_comp); + if (!max_stream) { + ret_streams = -EINVAL; + goto out; + } + if (max_stream < ret_streams) { + dev_dbg(dummy_dev(dum_hcd), "Ep 0x%x only supports %u " + "stream IDs.\n", + eps[i]->desc.bEndpointAddress, + max_stream); + ret_streams = max_stream; + } + } + + for (i = 0; i < num_eps; i++) { + index = dummy_get_ep_idx(&eps[i]->desc); + dum_hcd->stream_en_ep |= 1 << index; + set_max_streams_for_pipe(dum_hcd, + usb_endpoint_num(&eps[i]->desc), ret_streams); + } +out: + spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); + return ret_streams; } /* Reverts a group of bulk endpoints back to not using stream IDs. */ -int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, +static int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint **eps, unsigned int num_eps, gfp_t mem_flags) { - if (hcd->speed != HCD_USB3) - dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), - "%s() - ERROR! Not supported for USB2.0 roothub\n", - __func__); - return 0; + struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); + unsigned long flags; + int ret; + unsigned int index; + unsigned int i; + + spin_lock_irqsave(&dum_hcd->dum->lock, flags); + for (i = 0; i < num_eps; i++) { + index = dummy_get_ep_idx(&eps[i]->desc); + if (!((1 << index) & dum_hcd->stream_en_ep)) { + ret = -EINVAL; + goto out; + } + } + + for (i = 0; i < num_eps; i++) { + index = dummy_get_ep_idx(&eps[i]->desc); + dum_hcd->stream_en_ep &= ~(1 << index); + set_max_streams_for_pipe(dum_hcd, + usb_endpoint_num(&eps[i]->desc), 0); + } + ret = 0; +out: + spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); + return ret; } static struct hc_driver dummy_hcd = { @@ -2262,13 +2496,13 @@ static struct hc_driver dummy_hcd = { .start = dummy_start, .stop = dummy_stop, - .urb_enqueue = dummy_urb_enqueue, - .urb_dequeue = dummy_urb_dequeue, + .urb_enqueue = dummy_urb_enqueue, + .urb_dequeue = dummy_urb_dequeue, - .get_frame_number = dummy_h_get_frame, + .get_frame_number = dummy_h_get_frame, - .hub_status_data = dummy_hub_status, - .hub_control = dummy_hub_control, + .hub_status_data = dummy_hub_status, + .hub_control = dummy_hub_control, .bus_suspend = dummy_bus_suspend, .bus_resume = dummy_bus_resume, @@ -2278,11 +2512,13 @@ static struct hc_driver dummy_hcd = { static int dummy_hcd_probe(struct platform_device *pdev) { + struct dummy *dum; struct usb_hcd *hs_hcd; struct usb_hcd *ss_hcd; int retval; dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); + dum = *((void **)dev_get_platdata(&pdev->dev)); if (!mod_data.is_super_speed) dummy_hcd.flags = HCD_USB2; @@ -2292,10 +2528,8 @@ static int dummy_hcd_probe(struct platform_device *pdev) hs_hcd->has_tt = 1; retval = usb_add_hcd(hs_hcd, 0, 0); - if (retval != 0) { - usb_put_hcd(hs_hcd); - return retval; - } + if (retval) + goto put_usb2_hcd; if (mod_data.is_super_speed) { ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, @@ -2314,8 +2548,10 @@ static int dummy_hcd_probe(struct platform_device *pdev) put_usb3_hcd: usb_put_hcd(ss_hcd); dealloc_usb2_hcd: + usb_remove_hcd(hs_hcd); +put_usb2_hcd: usb_put_hcd(hs_hcd); - the_controller.hs_hcd = the_controller.ss_hcd = NULL; + dum->hs_hcd = dum->ss_hcd = NULL; return retval; } @@ -2323,7 +2559,7 @@ static int dummy_hcd_remove(struct platform_device *pdev) { struct dummy *dum; - dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; + dum = hcd_to_dummy_hcd(platform_get_drvdata(pdev))->dum; if (dum->ss_hcd) { usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); @@ -2333,21 +2569,21 @@ static int dummy_hcd_remove(struct platform_device *pdev) usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); - the_controller.hs_hcd = NULL; - the_controller.ss_hcd = NULL; + dum->hs_hcd = NULL; + dum->ss_hcd = NULL; return 0; } -static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) +static int dummy_hcd_suspend(struct platform_device *pdev, pm_message_t state) { struct usb_hcd *hcd; struct dummy_hcd *dum_hcd; int rc = 0; - dev_dbg (&pdev->dev, "%s\n", __func__); + dev_dbg(&pdev->dev, "%s\n", __func__); - hcd = platform_get_drvdata (pdev); + hcd = platform_get_drvdata(pdev); dum_hcd = hcd_to_dummy_hcd(hcd); if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); @@ -2357,15 +2593,15 @@ static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) return rc; } -static int dummy_hcd_resume (struct platform_device *pdev) +static int dummy_hcd_resume(struct platform_device *pdev) { struct usb_hcd *hcd; - dev_dbg (&pdev->dev, "%s\n", __func__); + dev_dbg(&pdev->dev, "%s\n", __func__); - hcd = platform_get_drvdata (pdev); + hcd = platform_get_drvdata(pdev); set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - usb_hcd_poll_rh_status (hcd); + usb_hcd_poll_rh_status(hcd); return 0; } @@ -2381,80 +2617,148 @@ static struct platform_driver dummy_hcd_driver = { }; /*-------------------------------------------------------------------------*/ +#define MAX_NUM_UDC 2 +static struct platform_device *the_udc_pdev[MAX_NUM_UDC]; +static struct platform_device *the_hcd_pdev[MAX_NUM_UDC]; -static struct platform_device *the_udc_pdev; -static struct platform_device *the_hcd_pdev; - -static int __init init (void) +static int __init init(void) { int retval = -ENOMEM; + int i; + struct dummy *dum[MAX_NUM_UDC]; - if (usb_disabled ()) + if (usb_disabled()) return -ENODEV; if (!mod_data.is_high_speed && mod_data.is_super_speed) return -EINVAL; - the_hcd_pdev = platform_device_alloc(driver_name, -1); - if (!the_hcd_pdev) - return retval; - the_udc_pdev = platform_device_alloc(gadget_name, -1); - if (!the_udc_pdev) - goto err_alloc_udc; + if (mod_data.num < 1 || mod_data.num > MAX_NUM_UDC) { + pr_err("Number of emulated UDC must be in range of 1…%d\n", + MAX_NUM_UDC); + return -EINVAL; + } + + for (i = 0; i < mod_data.num; i++) { + the_hcd_pdev[i] = platform_device_alloc(driver_name, i); + if (!the_hcd_pdev[i]) { + i--; + while (i >= 0) + platform_device_put(the_hcd_pdev[i--]); + return retval; + } + } + for (i = 0; i < mod_data.num; i++) { + the_udc_pdev[i] = platform_device_alloc(gadget_name, i); + if (!the_udc_pdev[i]) { + i--; + while (i >= 0) + platform_device_put(the_udc_pdev[i--]); + goto err_alloc_udc; + } + } + for (i = 0; i < mod_data.num; i++) { + dum[i] = kzalloc(sizeof(struct dummy), GFP_KERNEL); + if (!dum[i]) { + retval = -ENOMEM; + goto err_add_pdata; + } + retval = platform_device_add_data(the_hcd_pdev[i], &dum[i], + sizeof(void *)); + if (retval) + goto err_add_pdata; + retval = platform_device_add_data(the_udc_pdev[i], &dum[i], + sizeof(void *)); + if (retval) + goto err_add_pdata; + } retval = platform_driver_register(&dummy_hcd_driver); if (retval < 0) - goto err_register_hcd_driver; + goto err_add_pdata; retval = platform_driver_register(&dummy_udc_driver); if (retval < 0) goto err_register_udc_driver; - retval = platform_device_add(the_hcd_pdev); - if (retval < 0) - goto err_add_hcd; - if (!the_controller.hs_hcd || - (!the_controller.ss_hcd && mod_data.is_super_speed)) { - /* - * The hcd was added successfully but its probe function failed - * for some reason. - */ - retval = -EINVAL; - goto err_add_udc; + for (i = 0; i < mod_data.num; i++) { + retval = platform_device_add(the_hcd_pdev[i]); + if (retval < 0) { + i--; + while (i >= 0) + platform_device_del(the_hcd_pdev[i--]); + goto err_add_hcd; + } } - retval = platform_device_add(the_udc_pdev); - if (retval < 0) - goto err_add_udc; - if (!platform_get_drvdata(the_udc_pdev)) { - /* - * The udc was added successfully but its probe function failed - * for some reason. - */ - retval = -EINVAL; - goto err_probe_udc; + for (i = 0; i < mod_data.num; i++) { + if (!dum[i]->hs_hcd || + (!dum[i]->ss_hcd && mod_data.is_super_speed)) { + /* + * The hcd was added successfully but its probe + * function failed for some reason. + */ + retval = -EINVAL; + goto err_add_udc; + } + } + + for (i = 0; i < mod_data.num; i++) { + retval = platform_device_add(the_udc_pdev[i]); + if (retval < 0) { + i--; + while (i >= 0) + platform_device_del(the_udc_pdev[i]); + goto err_add_udc; + } + } + + for (i = 0; i < mod_data.num; i++) { + if (!platform_get_drvdata(the_udc_pdev[i])) { + /* + * The udc was added successfully but its probe + * function failed for some reason. + */ + retval = -EINVAL; + goto err_probe_udc; + } } return retval; err_probe_udc: - platform_device_del(the_udc_pdev); + for (i = 0; i < mod_data.num; i++) + platform_device_del(the_udc_pdev[i]); err_add_udc: - platform_device_del(the_hcd_pdev); + for (i = 0; i < mod_data.num; i++) + platform_device_del(the_hcd_pdev[i]); err_add_hcd: platform_driver_unregister(&dummy_udc_driver); err_register_udc_driver: platform_driver_unregister(&dummy_hcd_driver); -err_register_hcd_driver: - platform_device_put(the_udc_pdev); +err_add_pdata: + for (i = 0; i < mod_data.num; i++) + kfree(dum[i]); + for (i = 0; i < mod_data.num; i++) + platform_device_put(the_udc_pdev[i]); err_alloc_udc: - platform_device_put(the_hcd_pdev); + for (i = 0; i < mod_data.num; i++) + platform_device_put(the_hcd_pdev[i]); return retval; } -module_init (init); +module_init(init); -static void __exit cleanup (void) +static void __exit cleanup(void) { - platform_device_unregister(the_udc_pdev); - platform_device_unregister(the_hcd_pdev); + int i; + + for (i = 0; i < mod_data.num; i++) { + struct dummy *dum; + + dum = *((void **)dev_get_platdata(&the_udc_pdev[i]->dev)); + + platform_device_unregister(the_udc_pdev[i]); + platform_device_unregister(the_hcd_pdev[i]); + kfree(dum); + } platform_driver_unregister(&dummy_udc_driver); platform_driver_unregister(&dummy_hcd_driver); } -module_exit (cleanup); +module_exit(cleanup); diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index e0e6375ef5d..0567cca1465 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -10,7 +10,7 @@ */ #include <linux/kernel.h> -#include <linux/init.h> +#include <linux/module.h> #include <linux/types.h> #include <linux/device.h> @@ -22,17 +22,6 @@ #include "gadget_chips.h" - -/* we must assign addresses for configurable endpoints (like net2280) */ -static unsigned epnum; - -// #define MANY_ENDPOINTS -#ifdef MANY_ENDPOINTS -/* more than 15 configurable endpoints */ -static unsigned in_epnum; -#endif - - /* * This should work with endpoints from controller drivers sharing the * same endpoint naming convention. By example: @@ -68,7 +57,7 @@ ep_matches ( return 0; /* only support ep0 for portable CONTROL traffic */ - type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + type = usb_endpoint_type(desc); if (USB_ENDPOINT_XFER_CONTROL == type) return 0; @@ -139,7 +128,7 @@ ep_matches ( * and wants to know the maximum possible, provide the info. */ if (desc->wMaxPacketSize == 0) - desc->wMaxPacketSize = cpu_to_le16(ep->maxpacket); + desc->wMaxPacketSize = cpu_to_le16(ep->maxpacket_limit); /* endpoint maxpacket size is an input parameter, except for bulk * where it's an output parameter representing the full speed limit. @@ -155,7 +144,7 @@ ep_matches ( case USB_ENDPOINT_XFER_ISOC: /* ISO: limit 1023 bytes full speed, 1024 high/super speed */ - if (ep->maxpacket < max) + if (ep->maxpacket_limit < max) return 0; if (!gadget_is_dualspeed(gadget) && max > 1023) return 0; @@ -176,21 +165,19 @@ ep_matches ( if (isdigit (ep->name [2])) { u8 num = simple_strtoul (&ep->name [2], NULL, 10); desc->bEndpointAddress |= num; -#ifdef MANY_ENDPOINTS } else if (desc->bEndpointAddress & USB_DIR_IN) { - if (++in_epnum > 15) + if (++gadget->in_epnum > 15) return 0; - desc->bEndpointAddress = USB_DIR_IN | in_epnum; -#endif + desc->bEndpointAddress = USB_DIR_IN | gadget->in_epnum; } else { - if (++epnum > 15) + if (++gadget->out_epnum > 15) return 0; - desc->bEndpointAddress |= epnum; + desc->bEndpointAddress |= gadget->out_epnum; } /* report (variable) full speed bulk maxpacket */ if ((USB_ENDPOINT_XFER_BULK == type) && !ep_comp) { - int size = ep->maxpacket; + int size = ep->maxpacket_limit; /* min() doesn't work on bitfields with gcc-3.5 */ if (size > 64) @@ -275,24 +262,24 @@ struct usb_ep *usb_ep_autoconfig_ss( /* ep-e, ep-f are PIO with only 64 byte fifos */ ep = find_ep (gadget, "ep-e"); if (ep && ep_matches(gadget, ep, desc, ep_comp)) - return ep; + goto found_ep; ep = find_ep (gadget, "ep-f"); if (ep && ep_matches(gadget, ep, desc, ep_comp)) - return ep; + goto found_ep; } else if (gadget_is_goku (gadget)) { if (USB_ENDPOINT_XFER_INT == type) { /* single buffering is enough */ ep = find_ep(gadget, "ep3-bulk"); if (ep && ep_matches(gadget, ep, desc, ep_comp)) - return ep; + goto found_ep; } else if (USB_ENDPOINT_XFER_BULK == type && (USB_DIR_IN & desc->bEndpointAddress)) { /* DMA may be available */ ep = find_ep(gadget, "ep2-bulk"); if (ep && ep_matches(gadget, ep, desc, ep_comp)) - return ep; + goto found_ep; } #ifdef CONFIG_BLACKFIN @@ -311,19 +298,24 @@ struct usb_ep *usb_ep_autoconfig_ss( } else ep = NULL; if (ep && ep_matches(gadget, ep, desc, ep_comp)) - return ep; + goto found_ep; #endif } /* Second, look at endpoints until an unclaimed one looks usable */ list_for_each_entry (ep, &gadget->ep_list, ep_list) { if (ep_matches(gadget, ep, desc, ep_comp)) - return ep; + goto found_ep; } /* Fail */ return NULL; +found_ep: + ep->desc = NULL; + ep->comp_desc = NULL; + return ep; } +EXPORT_SYMBOL_GPL(usb_ep_autoconfig_ss); /** * usb_ep_autoconfig() - choose an endpoint matching the @@ -363,7 +355,7 @@ struct usb_ep *usb_ep_autoconfig( { return usb_ep_autoconfig_ss(gadget, desc, NULL); } - +EXPORT_SYMBOL_GPL(usb_ep_autoconfig); /** * usb_ep_autoconfig_reset - reset endpoint autoconfig state @@ -381,9 +373,7 @@ void usb_ep_autoconfig_reset (struct usb_gadget *gadget) list_for_each_entry (ep, &gadget->ep_list, ep_list) { ep->driver_data = NULL; } -#ifdef MANY_ENDPOINTS - in_epnum = 0; -#endif - epnum = 0; + gadget->in_epnum = 0; + gadget->out_epnum = 0; } - +EXPORT_SYMBOL_GPL(usb_ep_autoconfig_reset); diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index a28f6ffcd0f..c1c113ef950 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -14,8 +14,7 @@ /* #define VERBOSE_DEBUG */ #include <linux/kernel.h> -#include <linux/utsname.h> - +#include <linux/netdevice.h> #if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS @@ -93,30 +92,22 @@ static inline bool has_rndis(void) #endif } -/*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" +#include <linux/module.h> -#include "f_ecm.c" -#include "f_subset.c" +#include "u_ecm.h" +#include "u_gether.h" #ifdef USB_ETH_RNDIS -#include "f_rndis.c" -#include "rndis.c" +#include "u_rndis.h" +#include "rndis.h" +#else +#define rndis_borrow_net(...) do {} while (0) #endif -#include "f_eem.c" -#include "u_ether.c" +#include "u_eem.h" /*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); + +USB_ETHERNET_MODULE_PARAMETERS(); /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! * Instead: allocate your own, using normal USB-IF procedures. @@ -195,17 +186,10 @@ static const struct usb_descriptor_header *otg_desc[] = { NULL, }; - -/* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 - -static char manufacturer[50]; - static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = PREFIX DRIVER_DESC, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = PREFIX DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", { } /* end of list */ }; @@ -219,7 +203,17 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; -static u8 hostaddr[ETH_ALEN]; +static struct usb_function_instance *fi_ecm; +static struct usb_function *f_ecm; + +static struct usb_function_instance *fi_eem; +static struct usb_function *f_eem; + +static struct usb_function_instance *fi_geth; +static struct usb_function *f_geth; + +static struct usb_function_instance *fi_rndis; +static struct usb_function *f_rndis; /*-------------------------------------------------------------------------*/ @@ -230,6 +224,8 @@ static u8 hostaddr[ETH_ALEN]; */ static int __init rndis_do_config(struct usb_configuration *c) { + int status; + /* FIXME alloc iConfiguration string, set it in c->strings */ if (gadget_is_otg(c->cdev->gadget)) { @@ -237,7 +233,15 @@ static int __init rndis_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - return rndis_bind_config(c, hostaddr); + f_rndis = usb_get_function(fi_rndis); + if (IS_ERR(f_rndis)) + return PTR_ERR(f_rndis); + + status = usb_add_function(c, f_rndis); + if (status < 0) + usb_put_function(f_rndis); + + return status; } static struct usb_configuration rndis_config_driver = { @@ -262,6 +266,8 @@ MODULE_PARM_DESC(use_eem, "use CDC EEM mode"); */ static int __init eth_do_config(struct usb_configuration *c) { + int status = 0; + /* FIXME alloc iConfiguration string, set it in c->strings */ if (gadget_is_otg(c->cdev->gadget)) { @@ -269,12 +275,38 @@ static int __init eth_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - if (use_eem) - return eem_bind_config(c); - else if (can_support_ecm(c->cdev->gadget)) - return ecm_bind_config(c, hostaddr); - else - return geth_bind_config(c, hostaddr); + if (use_eem) { + f_eem = usb_get_function(fi_eem); + if (IS_ERR(f_eem)) + return PTR_ERR(f_eem); + + status = usb_add_function(c, f_eem); + if (status < 0) + usb_put_function(f_eem); + + return status; + } else if (can_support_ecm(c->cdev->gadget)) { + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) + return PTR_ERR(f_ecm); + + status = usb_add_function(c, f_ecm); + if (status < 0) + usb_put_function(f_ecm); + + return status; + } else { + f_geth = usb_get_function(fi_geth); + if (IS_ERR(f_geth)) + return PTR_ERR(f_geth); + + status = usb_add_function(c, f_geth); + if (status < 0) + usb_put_function(f_geth); + + return status; + } + } static struct usb_configuration eth_config_driver = { @@ -288,26 +320,51 @@ static struct usb_configuration eth_config_driver = { static int __init eth_bind(struct usb_composite_dev *cdev) { - int gcnum; struct usb_gadget *gadget = cdev->gadget; + struct f_eem_opts *eem_opts = NULL; + struct f_ecm_opts *ecm_opts = NULL; + struct f_gether_opts *geth_opts = NULL; + struct net_device *net; int status; - /* set up network link layer */ - status = gether_setup(cdev->gadget, hostaddr); - if (status < 0) - return status; - /* set up main config label and device descriptor */ if (use_eem) { /* EEM */ + fi_eem = usb_get_function_instance("eem"); + if (IS_ERR(fi_eem)) + return PTR_ERR(fi_eem); + + eem_opts = container_of(fi_eem, struct f_eem_opts, func_inst); + + net = eem_opts->net; + eth_config_driver.label = "CDC Ethernet (EEM)"; device_desc.idVendor = cpu_to_le16(EEM_VENDOR_NUM); device_desc.idProduct = cpu_to_le16(EEM_PRODUCT_NUM); - } else if (can_support_ecm(cdev->gadget)) { + } else if (can_support_ecm(gadget)) { /* ECM */ + + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); + + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + + net = ecm_opts->net; + eth_config_driver.label = "CDC Ethernet (ECM)"; } else { /* CDC Subset */ + + fi_geth = usb_get_function_instance("geth"); + if (IS_ERR(fi_geth)) + return PTR_ERR(fi_geth); + + geth_opts = container_of(fi_geth, struct f_gether_opts, + func_inst); + + net = geth_opts->net; + eth_config_driver.label = "CDC Subset/SAFE"; device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM); @@ -316,83 +373,105 @@ static int __init eth_bind(struct usb_composite_dev *cdev) device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; } + gether_set_qmult(net, qmult); + if (!gether_set_host_addr(net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); + if (has_rndis()) { /* RNDIS plus ECM-or-Subset */ + gether_set_gadget(net, cdev->gadget); + status = gether_register_netdev(net); + if (status) + goto fail; + + if (use_eem) + eem_opts->bound = true; + else if (can_support_ecm(gadget)) + ecm_opts->bound = true; + else + geth_opts->bound = true; + + fi_rndis = usb_get_function_instance("rndis"); + if (IS_ERR(fi_rndis)) { + status = PTR_ERR(fi_rndis); + goto fail; + } + + rndis_borrow_net(fi_rndis, net); + device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM); device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM); device_desc.bNumConfigurations = 2; } - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - else { - /* We assume that can_support_ecm() tells the truth; - * but if the controller isn't recognized at all then - * that assumption is a bit more likely to be wrong. - */ - dev_warn(&gadget->dev, - "controller '%s' not recognized; trying %s\n", - gadget->name, - eth_config_driver.label); - device_desc.bcdDevice = - cpu_to_le16(0x0300 | 0x0099); - } - - /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - /* device descriptor strings: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - status = usb_string_id(cdev); - if (status < 0) - goto fail; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) - goto fail; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; + goto fail1; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; /* register our configuration(s); RNDIS first, if it's used */ if (has_rndis()) { status = usb_add_config(cdev, &rndis_config_driver, rndis_do_config); if (status < 0) - goto fail; + goto fail1; } status = usb_add_config(cdev, ð_config_driver, eth_do_config); if (status < 0) - goto fail; + goto fail1; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", DRIVER_DESC); return 0; +fail1: + if (has_rndis()) + usb_put_function_instance(fi_rndis); fail: - gether_cleanup(); + if (use_eem) + usb_put_function_instance(fi_eem); + else if (can_support_ecm(gadget)) + usb_put_function_instance(fi_ecm); + else + usb_put_function_instance(fi_geth); return status; } static int __exit eth_unbind(struct usb_composite_dev *cdev) { - gether_cleanup(); + if (has_rndis()) { + usb_put_function(f_rndis); + usb_put_function_instance(fi_rndis); + } + if (use_eem) { + usb_put_function(f_eem); + usb_put_function_instance(fi_eem); + } else if (can_support_ecm(cdev->gadget)) { + usb_put_function(f_ecm); + usb_put_function_instance(fi_ecm); + } else { + usb_put_function(f_geth); + usb_put_function_instance(fi_geth); + } return 0; } -static struct usb_composite_driver eth_driver = { +static __refdata struct usb_composite_driver eth_driver = { .name = "g_ether", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_SUPER, + .bind = eth_bind, .unbind = __exit_p(eth_unbind), }; @@ -402,7 +481,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_probe(ð_driver, eth_bind); + return usb_composite_probe(ð_driver); } module_init(init); diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 3f8849339ad..ab1065afbbd 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -5,7 +5,7 @@ * Copyright (C) 2008 by David Brownell * Copyright (C) 2008 by Nokia Corporation * Copyright (C) 2009 by Samsung Electronics - * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) + * Author: Michal Nazarewicz (mina86@mina86.com) * * This software is distributed under the terms of the GNU General * Public License ("GPL") as published by the Free Software Foundation, @@ -16,7 +16,9 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> +#include <linux/err.h> #include "u_serial.h" #include "gadget_chips.h" @@ -87,7 +89,7 @@ static inline struct f_acm *port_to_acm(struct gserial *p) /* notification endpoint uses smallish and infrequent fixed-size messages */ -#define GS_LOG2_NOTIFY_INTERVAL 5 /* 1 << 5 == 32 msec */ +#define GS_NOTIFY_INTERVAL_MS 32 #define GS_NOTIFY_MAXPACKET 10 /* notification + 2 bytes */ /* interface and class descriptors: */ @@ -167,7 +169,7 @@ static struct usb_endpoint_descriptor acm_fs_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(GS_NOTIFY_MAXPACKET), - .bInterval = 1 << GS_LOG2_NOTIFY_INTERVAL, + .bInterval = GS_NOTIFY_INTERVAL_MS, }; static struct usb_endpoint_descriptor acm_fs_in_desc = { @@ -199,14 +201,13 @@ static struct usb_descriptor_header *acm_fs_function[] = { }; /* high speed support: */ - static struct usb_endpoint_descriptor acm_hs_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(GS_NOTIFY_MAXPACKET), - .bInterval = GS_LOG2_NOTIFY_INTERVAL+4, + .bInterval = USB_MS_TO_HS_INTERVAL(GS_NOTIFY_INTERVAL_MS), }; static struct usb_endpoint_descriptor acm_hs_in_desc = { @@ -237,6 +238,42 @@ static struct usb_descriptor_header *acm_hs_function[] = { NULL, }; +static struct usb_endpoint_descriptor acm_ss_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_endpoint_descriptor acm_ss_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor acm_ss_bulk_comp_desc = { + .bLength = sizeof acm_ss_bulk_comp_desc, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_descriptor_header *acm_ss_function[] = { + (struct usb_descriptor_header *) &acm_iad_descriptor, + (struct usb_descriptor_header *) &acm_control_interface_desc, + (struct usb_descriptor_header *) &acm_header_desc, + (struct usb_descriptor_header *) &acm_call_mgmt_descriptor, + (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &acm_union_desc, + (struct usb_descriptor_header *) &acm_hs_notify_desc, + (struct usb_descriptor_header *) &acm_ss_bulk_comp_desc, + (struct usb_descriptor_header *) &acm_data_interface_desc, + (struct usb_descriptor_header *) &acm_ss_in_desc, + (struct usb_descriptor_header *) &acm_ss_bulk_comp_desc, + (struct usb_descriptor_header *) &acm_ss_out_desc, + (struct usb_descriptor_header *) &acm_ss_bulk_comp_desc, + NULL, +}; + /* string descriptors: */ #define ACM_CTRL_IDX 0 @@ -248,7 +285,7 @@ static struct usb_string acm_string_defs[] = { [ACM_CTRL_IDX].s = "CDC Abstract Control Model (ACM)", [ACM_DATA_IDX].s = "CDC ACM Data", [ACM_IAD_IDX ].s = "CDC Serial", - { /* ZEROES END LIST */ }, + { } /* end of list */ }; static struct usb_gadget_strings acm_string_table = { @@ -570,9 +607,23 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_acm *acm = func_to_acm(f); + struct usb_string *us; int status; struct usb_ep *ep; + /* REVISIT might want instance-specific strings to help + * distinguish instances ... + */ + + /* maybe allocate device-global string IDs, and patch descriptors */ + us = usb_gstrings_attach(cdev, acm_strings, + ARRAY_SIZE(acm_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + acm_control_interface_desc.iInterface = us[ACM_CTRL_IDX].id; + acm_data_interface_desc.iInterface = us[ACM_DATA_IDX].id; + acm_iad_descriptor.iFunction = us[ACM_IAD_IDX].id; + /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); if (status < 0) @@ -623,29 +674,26 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) acm->notify_req->complete = acm_cdc_notify_complete; acm->notify_req->context = acm; - /* copy descriptors */ - f->descriptors = usb_copy_descriptors(acm_fs_function); - if (!f->descriptors) - goto fail; - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - acm_hs_in_desc.bEndpointAddress = - acm_fs_in_desc.bEndpointAddress; - acm_hs_out_desc.bEndpointAddress = - acm_fs_out_desc.bEndpointAddress; - acm_hs_notify_desc.bEndpointAddress = - acm_fs_notify_desc.bEndpointAddress; - - /* copy descriptors */ - f->hs_descriptors = usb_copy_descriptors(acm_hs_function); - } + acm_hs_in_desc.bEndpointAddress = acm_fs_in_desc.bEndpointAddress; + acm_hs_out_desc.bEndpointAddress = acm_fs_out_desc.bEndpointAddress; + acm_hs_notify_desc.bEndpointAddress = + acm_fs_notify_desc.bEndpointAddress; + + acm_ss_in_desc.bEndpointAddress = acm_fs_in_desc.bEndpointAddress; + acm_ss_out_desc.bEndpointAddress = acm_fs_out_desc.bEndpointAddress; + + status = usb_assign_descriptors(f, acm_fs_function, acm_hs_function, + acm_ss_function); + if (status) + goto fail; DBG(cdev, "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n", acm->port_num, + gadget_is_superspeed(c->cdev->gadget) ? "super" : gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", acm->port.in->name, acm->port.out->name, acm->notify->name); @@ -668,82 +716,34 @@ fail: return status; } -static void -acm_unbind(struct usb_configuration *c, struct usb_function *f) +static void acm_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_acm *acm = func_to_acm(f); - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - gs_free_req(acm->notify, acm->notify_req); - kfree(acm); + acm_string_defs[0].id = 0; + usb_free_all_descriptors(f); + if (acm->notify_req) + gs_free_req(acm->notify, acm->notify_req); } -/* Some controllers can't support CDC ACM ... */ -static inline bool can_support_cdc(struct usb_configuration *c) +static void acm_free_func(struct usb_function *f) { - /* everything else is *probably* fine ... */ - return true; + struct f_acm *acm = func_to_acm(f); + + kfree(acm); } -/** - * acm_bind_config - add a CDC ACM function to a configuration - * @c: the configuration to support the CDC ACM instance - * @port_num: /dev/ttyGS* port this interface will use - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gserial_setup() with enough ports to - * handle all the ones it binds. Caller is also responsible - * for calling @gserial_cleanup() before module unload. - */ -int acm_bind_config(struct usb_configuration *c, u8 port_num) +static struct usb_function *acm_alloc_func(struct usb_function_instance *fi) { - struct f_acm *acm; - int status; - - if (!can_support_cdc(c)) - return -EINVAL; + struct f_serial_opts *opts; + struct f_acm *acm; - /* REVISIT might want instance-specific strings to help - * distinguish instances ... - */ - - /* maybe allocate device-global string IDs, and patch descriptors */ - if (acm_string_defs[ACM_CTRL_IDX].id == 0) { - status = usb_string_id(c->cdev); - if (status < 0) - return status; - acm_string_defs[ACM_CTRL_IDX].id = status; - - acm_control_interface_desc.iInterface = status; - - status = usb_string_id(c->cdev); - if (status < 0) - return status; - acm_string_defs[ACM_DATA_IDX].id = status; - - acm_data_interface_desc.iInterface = status; - - status = usb_string_id(c->cdev); - if (status < 0) - return status; - acm_string_defs[ACM_IAD_IDX].id = status; - - acm_iad_descriptor.iFunction = status; - } - - /* allocate and initialize one new instance */ - acm = kzalloc(sizeof *acm, GFP_KERNEL); + acm = kzalloc(sizeof(*acm), GFP_KERNEL); if (!acm) - return -ENOMEM; + return ERR_PTR(-ENOMEM); spin_lock_init(&acm->lock); - acm->port_num = port_num; - acm->port.connect = acm_connect; acm->port.disconnect = acm_disconnect; acm->port.send_break = acm_send_break; @@ -752,13 +752,97 @@ int acm_bind_config(struct usb_configuration *c, u8 port_num) acm->port.func.strings = acm_strings; /* descriptors are per-instance copies */ acm->port.func.bind = acm_bind; - acm->port.func.unbind = acm_unbind; acm->port.func.set_alt = acm_set_alt; acm->port.func.setup = acm_setup; acm->port.func.disable = acm_disable; - status = usb_add_function(c, &acm->port.func); - if (status) - kfree(acm); - return status; + opts = container_of(fi, struct f_serial_opts, func_inst); + acm->port_num = opts->port_num; + acm->port.func.unbind = acm_unbind; + acm->port.func.free_func = acm_free_func; + + return &acm->port.func; +} + +static inline struct f_serial_opts *to_f_serial_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_serial_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_serial_opts); +static ssize_t f_acm_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + struct f_serial_opts *opts = to_f_serial_opts(item); + struct f_serial_opts_attribute *f_serial_opts_attr = + container_of(attr, struct f_serial_opts_attribute, attr); + ssize_t ret = 0; + + if (f_serial_opts_attr->show) + ret = f_serial_opts_attr->show(opts, page); + return ret; +} + +static void acm_attr_release(struct config_item *item) +{ + struct f_serial_opts *opts = to_f_serial_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations acm_item_ops = { + .release = acm_attr_release, + .show_attribute = f_acm_attr_show, +}; + +static ssize_t f_acm_port_num_show(struct f_serial_opts *opts, char *page) +{ + return sprintf(page, "%u\n", opts->port_num); +} + +static struct f_serial_opts_attribute f_acm_port_num = + __CONFIGFS_ATTR_RO(port_num, f_acm_port_num_show); + + +static struct configfs_attribute *acm_attrs[] = { + &f_acm_port_num.attr, + NULL, +}; + +static struct config_item_type acm_func_type = { + .ct_item_ops = &acm_item_ops, + .ct_attrs = acm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void acm_free_instance(struct usb_function_instance *fi) +{ + struct f_serial_opts *opts; + + opts = container_of(fi, struct f_serial_opts, func_inst); + gserial_free_line(opts->port_num); + kfree(opts); +} + +static struct usb_function_instance *acm_alloc_instance(void) +{ + struct f_serial_opts *opts; + int ret; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + opts->func_inst.free_func_inst = acm_free_instance; + ret = gserial_alloc_line(&opts->port_num); + if (ret) { + kfree(opts); + return ERR_PTR(ret); + } + config_group_init_type_name(&opts->func_inst.group, "", + &acm_func_type); + return &opts->func_inst; } +DECLARE_USB_FUNCTION_INIT(acm, acm_alloc_instance, acm_alloc_func); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c index 11c07cb7d33..798760fa7e7 100644 --- a/drivers/usb/gadget/f_ecm.c +++ b/drivers/usb/gadget/f_ecm.c @@ -14,10 +14,13 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_ecm.h" /* @@ -91,12 +94,26 @@ static inline unsigned ecm_bitrate(struct usb_gadget *g) * encapsulated commands (vendor-specific, using control-OUT). */ -#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ +#define ECM_STATUS_INTERVAL_MS 32 #define ECM_STATUS_BYTECOUNT 16 /* 8 byte header + data */ /* interface descriptor: */ +static struct usb_interface_assoc_descriptor +ecm_iad_descriptor = { + .bLength = sizeof ecm_iad_descriptor, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + + /* .bFirstInterface = DYNAMIC, */ + .bInterfaceCount = 2, /* control + data */ + .bFunctionClass = USB_CLASS_COMM, + .bFunctionSubClass = USB_CDC_SUBCLASS_ETHERNET, + .bFunctionProtocol = USB_CDC_PROTO_NONE, + /* .iFunction = DYNAMIC */ +}; + + static struct usb_interface_descriptor ecm_control_intf = { .bLength = sizeof ecm_control_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -178,7 +195,7 @@ static struct usb_endpoint_descriptor fs_ecm_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(ECM_STATUS_BYTECOUNT), - .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, + .bInterval = ECM_STATUS_INTERVAL_MS, }; static struct usb_endpoint_descriptor fs_ecm_in_desc = { @@ -199,6 +216,7 @@ static struct usb_endpoint_descriptor fs_ecm_out_desc = { static struct usb_descriptor_header *ecm_fs_function[] = { /* CDC ECM control descriptors */ + (struct usb_descriptor_header *) &ecm_iad_descriptor, (struct usb_descriptor_header *) &ecm_control_intf, (struct usb_descriptor_header *) &ecm_header_desc, (struct usb_descriptor_header *) &ecm_union_desc, @@ -224,7 +242,7 @@ static struct usb_endpoint_descriptor hs_ecm_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(ECM_STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, + .bInterval = USB_MS_TO_HS_INTERVAL(ECM_STATUS_INTERVAL_MS), }; static struct usb_endpoint_descriptor hs_ecm_in_desc = { @@ -247,6 +265,7 @@ static struct usb_endpoint_descriptor hs_ecm_out_desc = { static struct usb_descriptor_header *ecm_hs_function[] = { /* CDC ECM control descriptors */ + (struct usb_descriptor_header *) &ecm_iad_descriptor, (struct usb_descriptor_header *) &ecm_control_intf, (struct usb_descriptor_header *) &ecm_header_desc, (struct usb_descriptor_header *) &ecm_union_desc, @@ -272,7 +291,7 @@ static struct usb_endpoint_descriptor ss_ecm_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(ECM_STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, + .bInterval = USB_MS_TO_HS_INTERVAL(ECM_STATUS_INTERVAL_MS), }; static struct usb_ss_ep_comp_descriptor ss_ecm_intr_comp_desc = { @@ -314,6 +333,7 @@ static struct usb_ss_ep_comp_descriptor ss_ecm_bulk_comp_desc = { static struct usb_descriptor_header *ecm_ss_function[] = { /* CDC ECM control descriptors */ + (struct usb_descriptor_header *) &ecm_iad_descriptor, (struct usb_descriptor_header *) &ecm_control_intf, (struct usb_descriptor_header *) &ecm_header_desc, (struct usb_descriptor_header *) &ecm_union_desc, @@ -337,8 +357,9 @@ static struct usb_descriptor_header *ecm_ss_function[] = { static struct usb_string ecm_string_defs[] = { [0].s = "CDC Ethernet Control Model (ECM)", - [1].s = NULL /* DYNAMIC */, + [1].s = "", [2].s = "CDC Ethernet Data", + [3].s = "CDC ECM", { } /* end of list */ }; @@ -666,14 +687,49 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_ecm *ecm = func_to_ecm(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_ecm_opts *ecm_opts; + + if (!can_support_ecm(cdev->gadget)) + return -EINVAL; + + ecm_opts = container_of(f->fi, struct f_ecm_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to ecm_opts->bound access + */ + if (!ecm_opts->bound) { + mutex_lock(&ecm_opts->lock); + gether_set_gadget(ecm_opts->net, cdev->gadget); + status = gether_register_netdev(ecm_opts->net); + mutex_unlock(&ecm_opts->lock); + if (status) + return status; + ecm_opts->bound = true; + } + + us = usb_gstrings_attach(cdev, ecm_strings, + ARRAY_SIZE(ecm_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + ecm_control_intf.iInterface = us[0].id; + ecm_data_intf.iInterface = us[2].id; + ecm_desc.iMACAddress = us[1].id; + ecm_iad_descriptor.iFunction = us[3].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) goto fail; ecm->ctrl_id = status; + ecm_iad_descriptor.bFirstInterface = status; ecm_control_intf.bInterfaceNumber = status; ecm_union_desc.bMasterInterface0 = status; @@ -724,42 +780,24 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) ecm->notify_req->context = ecm; ecm->notify_req->complete = ecm_notify_complete; - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(ecm_fs_function); - if (!f->descriptors) - goto fail; - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - hs_ecm_in_desc.bEndpointAddress = - fs_ecm_in_desc.bEndpointAddress; - hs_ecm_out_desc.bEndpointAddress = - fs_ecm_out_desc.bEndpointAddress; - hs_ecm_notify_desc.bEndpointAddress = - fs_ecm_notify_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(ecm_hs_function); - if (!f->hs_descriptors) - goto fail; - } - - if (gadget_is_superspeed(c->cdev->gadget)) { - ss_ecm_in_desc.bEndpointAddress = - fs_ecm_in_desc.bEndpointAddress; - ss_ecm_out_desc.bEndpointAddress = - fs_ecm_out_desc.bEndpointAddress; - ss_ecm_notify_desc.bEndpointAddress = - fs_ecm_notify_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->ss_descriptors = usb_copy_descriptors(ecm_ss_function); - if (!f->ss_descriptors) - goto fail; - } + hs_ecm_in_desc.bEndpointAddress = fs_ecm_in_desc.bEndpointAddress; + hs_ecm_out_desc.bEndpointAddress = fs_ecm_out_desc.bEndpointAddress; + hs_ecm_notify_desc.bEndpointAddress = + fs_ecm_notify_desc.bEndpointAddress; + + ss_ecm_in_desc.bEndpointAddress = fs_ecm_in_desc.bEndpointAddress; + ss_ecm_out_desc.bEndpointAddress = fs_ecm_out_desc.bEndpointAddress; + ss_ecm_notify_desc.bEndpointAddress = + fs_ecm_notify_desc.bEndpointAddress; + + status = usb_assign_descriptors(f, ecm_fs_function, ecm_hs_function, + ecm_ss_function); + if (status) + goto fail; /* NOTE: all that is done without knowing or caring about * the network link ... which is unavailable to this code @@ -777,11 +815,6 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: - if (f->descriptors) - usb_free_descriptors(f->descriptors); - if (f->hs_descriptors) - usb_free_descriptors(f->hs_descriptors); - if (ecm->notify_req) { kfree(ecm->notify_req->buf); usb_ep_free_request(ecm->notify, ecm->notify_req); @@ -790,9 +823,9 @@ fail: /* we might as well release our claims on endpoints */ if (ecm->notify) ecm->notify->driver_data = NULL; - if (ecm->port.out_ep->desc) + if (ecm->port.out_ep) ecm->port.out_ep->driver_data = NULL; - if (ecm->port.in_ep->desc) + if (ecm->port.in_ep) ecm->port.in_ep->driver_data = NULL; ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); @@ -800,88 +833,129 @@ fail: return status; } -static void -ecm_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_ecm_opts *to_f_ecm_opts(struct config_item *item) { - struct f_ecm *ecm = func_to_ecm(f); + return container_of(to_config_group(item), struct f_ecm_opts, + func_inst.group); +} - DBG(c->cdev, "ecm unbind\n"); +/* f_ecm_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(ecm); - if (gadget_is_superspeed(c->cdev->gadget)) - usb_free_descriptors(f->ss_descriptors); - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); +/* f_ecm_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(ecm); - kfree(ecm->notify_req->buf); - usb_ep_free_request(ecm->notify, ecm->notify_req); +/* f_ecm_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(ecm); - ecm_string_defs[1].s = NULL; - kfree(ecm); +/* f_ecm_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(ecm); + +/* f_ecm_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(ecm); + +static struct configfs_attribute *ecm_attrs[] = { + &f_ecm_opts_dev_addr.attr, + &f_ecm_opts_host_addr.attr, + &f_ecm_opts_qmult.attr, + &f_ecm_opts_ifname.attr, + NULL, +}; + +static struct config_item_type ecm_func_type = { + .ct_item_ops = &ecm_item_ops, + .ct_attrs = ecm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void ecm_free_inst(struct usb_function_instance *f) +{ + struct f_ecm_opts *opts; + + opts = container_of(f, struct f_ecm_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); } -/** - * ecm_bind_config - add CDC Ethernet network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int -ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +static struct usb_function_instance *ecm_alloc_inst(void) { - struct f_ecm *ecm; - int status; + struct f_ecm_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = ecm_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } - if (!can_support_ecm(c->cdev->gadget) || !ethaddr) - return -EINVAL; + config_group_init_type_name(&opts->func_inst.group, "", &ecm_func_type); - /* maybe allocate device-global string IDs */ - if (ecm_string_defs[0].id == 0) { + return &opts->func_inst; +} - /* control interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ecm_string_defs[0].id = status; - ecm_control_intf.iInterface = status; +static void ecm_free(struct usb_function *f) +{ + struct f_ecm *ecm; + struct f_ecm_opts *opts; - /* data interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ecm_string_defs[2].id = status; - ecm_data_intf.iInterface = status; + ecm = func_to_ecm(f); + opts = container_of(f->fi, struct f_ecm_opts, func_inst); + kfree(ecm); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} - /* MAC address */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ecm_string_defs[1].id = status; - ecm_desc.iMACAddress = status; - } +static void ecm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_ecm *ecm = func_to_ecm(f); + + DBG(c->cdev, "ecm unbind\n"); + + usb_free_all_descriptors(f); + + kfree(ecm->notify_req->buf); + usb_ep_free_request(ecm->notify, ecm->notify_req); +} + +static struct usb_function *ecm_alloc(struct usb_function_instance *fi) +{ + struct f_ecm *ecm; + struct f_ecm_opts *opts; + int status; /* allocate and initialize one new instance */ - ecm = kzalloc(sizeof *ecm, GFP_KERNEL); + ecm = kzalloc(sizeof(*ecm), GFP_KERNEL); if (!ecm) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_ecm_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; /* export host's Ethernet address in CDC format */ - snprintf(ecm->ethaddr, sizeof ecm->ethaddr, - "%02X%02X%02X%02X%02X%02X", - ethaddr[0], ethaddr[1], ethaddr[2], - ethaddr[3], ethaddr[4], ethaddr[5]); + status = gether_get_host_addr_cdc(opts->net, ecm->ethaddr, + sizeof(ecm->ethaddr)); + if (status < 12) { + kfree(ecm); + mutex_unlock(&opts->lock); + return ERR_PTR(-EINVAL); + } ecm_string_defs[1].s = ecm->ethaddr; + ecm->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); ecm->port.cdc_filter = DEFAULT_FILTER; ecm->port.func.name = "cdc_ethernet"; - ecm->port.func.strings = ecm_strings; /* descriptors are per-instance copies */ ecm->port.func.bind = ecm_bind; ecm->port.func.unbind = ecm_unbind; @@ -889,11 +963,11 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) ecm->port.func.get_alt = ecm_get_alt; ecm->port.func.setup = ecm_setup; ecm->port.func.disable = ecm_disable; + ecm->port.func.free_func = ecm_free; - status = usb_add_function(c, &ecm->port.func); - if (status) { - ecm_string_defs[1].s = NULL; - kfree(ecm); - } - return status; + return &ecm->port.func; } + +DECLARE_USB_FUNCTION_INIT(ecm, ecm_alloc_inst, ecm_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c index 1a7b2dd7d40..d61c11d765d 100644 --- a/drivers/usb/gadget/f_eem.c +++ b/drivers/usb/gadget/f_eem.c @@ -12,12 +12,15 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/crc32.h> #include <linux/slab.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_eem.h" #define EEM_HLEN 2 @@ -40,7 +43,7 @@ static inline struct f_eem *func_to_eem(struct usb_function *f) /* interface descriptor: */ -static struct usb_interface_descriptor eem_intf __initdata = { +static struct usb_interface_descriptor eem_intf = { .bLength = sizeof eem_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -54,7 +57,7 @@ static struct usb_interface_descriptor eem_intf __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor eem_fs_in_desc __initdata = { +static struct usb_endpoint_descriptor eem_fs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -62,7 +65,7 @@ static struct usb_endpoint_descriptor eem_fs_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor eem_fs_out_desc __initdata = { +static struct usb_endpoint_descriptor eem_fs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -70,7 +73,7 @@ static struct usb_endpoint_descriptor eem_fs_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *eem_fs_function[] __initdata = { +static struct usb_descriptor_header *eem_fs_function[] = { /* CDC EEM control descriptors */ (struct usb_descriptor_header *) &eem_intf, (struct usb_descriptor_header *) &eem_fs_in_desc, @@ -80,7 +83,7 @@ static struct usb_descriptor_header *eem_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor eem_hs_in_desc __initdata = { +static struct usb_endpoint_descriptor eem_hs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -89,7 +92,7 @@ static struct usb_endpoint_descriptor eem_hs_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor eem_hs_out_desc __initdata = { +static struct usb_endpoint_descriptor eem_hs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -98,7 +101,7 @@ static struct usb_endpoint_descriptor eem_hs_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *eem_hs_function[] __initdata = { +static struct usb_descriptor_header *eem_hs_function[] = { /* CDC EEM control descriptors */ (struct usb_descriptor_header *) &eem_intf, (struct usb_descriptor_header *) &eem_hs_in_desc, @@ -108,7 +111,7 @@ static struct usb_descriptor_header *eem_hs_function[] __initdata = { /* super speed support: */ -static struct usb_endpoint_descriptor eem_ss_in_desc __initdata = { +static struct usb_endpoint_descriptor eem_ss_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -117,7 +120,7 @@ static struct usb_endpoint_descriptor eem_ss_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(1024), }; -static struct usb_endpoint_descriptor eem_ss_out_desc __initdata = { +static struct usb_endpoint_descriptor eem_ss_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -126,7 +129,7 @@ static struct usb_endpoint_descriptor eem_ss_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(1024), }; -static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc __initdata = { +static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc = { .bLength = sizeof eem_ss_bulk_comp_desc, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -135,7 +138,7 @@ static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc __initdata = { /* .bmAttributes = 0, */ }; -static struct usb_descriptor_header *eem_ss_function[] __initdata = { +static struct usb_descriptor_header *eem_ss_function[] = { /* CDC EEM control descriptors */ (struct usb_descriptor_header *) &eem_intf, (struct usb_descriptor_header *) &eem_ss_in_desc, @@ -242,14 +245,40 @@ static void eem_disable(struct usb_function *f) /* EEM function driver setup/binding */ -static int __init -eem_bind(struct usb_configuration *c, struct usb_function *f) +static int eem_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_eem *eem = func_to_eem(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_eem_opts *eem_opts; + + eem_opts = container_of(f->fi, struct f_eem_opts, func_inst); + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to eem_opts->bound access + */ + if (!eem_opts->bound) { + mutex_lock(&eem_opts->lock); + gether_set_gadget(eem_opts->net, cdev->gadget); + status = gether_register_netdev(eem_opts->net); + mutex_unlock(&eem_opts->lock); + if (status) + return status; + eem_opts->bound = true; + } + + us = usb_gstrings_attach(cdev, eem_strings, + ARRAY_SIZE(eem_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + eem_intf.iInterface = us[0].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -274,38 +303,20 @@ eem_bind(struct usb_configuration *c, struct usb_function *f) status = -ENOMEM; - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(eem_fs_function); - if (!f->descriptors) - goto fail; - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - eem_hs_in_desc.bEndpointAddress = - eem_fs_in_desc.bEndpointAddress; - eem_hs_out_desc.bEndpointAddress = - eem_fs_out_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(eem_hs_function); - if (!f->hs_descriptors) - goto fail; - } + eem_hs_in_desc.bEndpointAddress = eem_fs_in_desc.bEndpointAddress; + eem_hs_out_desc.bEndpointAddress = eem_fs_out_desc.bEndpointAddress; - if (gadget_is_superspeed(c->cdev->gadget)) { - eem_ss_in_desc.bEndpointAddress = - eem_fs_in_desc.bEndpointAddress; - eem_ss_out_desc.bEndpointAddress = - eem_fs_out_desc.bEndpointAddress; + eem_ss_in_desc.bEndpointAddress = eem_fs_in_desc.bEndpointAddress; + eem_ss_out_desc.bEndpointAddress = eem_fs_out_desc.bEndpointAddress; - /* copy descriptors, and track endpoint copies */ - f->ss_descriptors = usb_copy_descriptors(eem_ss_function); - if (!f->ss_descriptors) - goto fail; - } + status = usb_assign_descriptors(f, eem_fs_function, eem_hs_function, + eem_ss_function); + if (status) + goto fail; DBG(cdev, "CDC Ethernet (EEM): %s speed IN/%s OUT/%s\n", gadget_is_superspeed(c->cdev->gadget) ? "super" : @@ -314,15 +325,10 @@ eem_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: - if (f->descriptors) - usb_free_descriptors(f->descriptors); - if (f->hs_descriptors) - usb_free_descriptors(f->hs_descriptors); - - /* we might as well release our claims on endpoints */ - if (eem->port.out_ep->desc) + usb_free_all_descriptors(f); + if (eem->port.out_ep) eem->port.out_ep->driver_data = NULL; - if (eem->port.in_ep->desc) + if (eem->port.in_ep) eem->port.in_ep->driver_data = NULL; ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); @@ -330,21 +336,6 @@ fail: return status; } -static void -eem_unbind(struct usb_configuration *c, struct usb_function *f) -{ - struct f_eem *eem = func_to_eem(f); - - DBG(c->cdev, "eem unbind\n"); - - if (gadget_is_superspeed(c->cdev->gadget)) - usb_free_descriptors(f->ss_descriptors); - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - kfree(eem); -} - static void eem_cmd_complete(struct usb_ep *ep, struct usb_request *req) { struct sk_buff *skb = (struct sk_buff *)req->context; @@ -545,54 +536,127 @@ error: return status; } -/** - * eem_bind_config - add CDC Ethernet (EEM) network link to a configuration - * @c: the configuration to support the network link - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int __init eem_bind_config(struct usb_configuration *c) +static inline struct f_eem_opts *to_f_eem_opts(struct config_item *item) { - struct f_eem *eem; - int status; + return container_of(to_config_group(item), struct f_eem_opts, + func_inst.group); +} - /* maybe allocate device-global string IDs */ - if (eem_string_defs[0].id == 0) { +/* f_eem_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(eem); - /* control interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - eem_string_defs[0].id = status; - eem_intf.iInterface = status; +/* f_eem_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(eem); + +/* f_eem_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(eem); + +/* f_eem_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(eem); + +/* f_eem_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(eem); + +static struct configfs_attribute *eem_attrs[] = { + &f_eem_opts_dev_addr.attr, + &f_eem_opts_host_addr.attr, + &f_eem_opts_qmult.attr, + &f_eem_opts_ifname.attr, + NULL, +}; + +static struct config_item_type eem_func_type = { + .ct_item_ops = &eem_item_ops, + .ct_attrs = eem_attrs, + .ct_owner = THIS_MODULE, +}; + +static void eem_free_inst(struct usb_function_instance *f) +{ + struct f_eem_opts *opts; + + opts = container_of(f, struct f_eem_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *eem_alloc_inst(void) +{ + struct f_eem_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = eem_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); } + config_group_init_type_name(&opts->func_inst.group, "", &eem_func_type); + + return &opts->func_inst; +} + +static void eem_free(struct usb_function *f) +{ + struct f_eem *eem; + struct f_eem_opts *opts; + + eem = func_to_eem(f); + opts = container_of(f->fi, struct f_eem_opts, func_inst); + kfree(eem); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} + +static void eem_unbind(struct usb_configuration *c, struct usb_function *f) +{ + DBG(c->cdev, "eem unbind\n"); + + usb_free_all_descriptors(f); +} + +static struct usb_function *eem_alloc(struct usb_function_instance *fi) +{ + struct f_eem *eem; + struct f_eem_opts *opts; + /* allocate and initialize one new instance */ - eem = kzalloc(sizeof *eem, GFP_KERNEL); + eem = kzalloc(sizeof(*eem), GFP_KERNEL); if (!eem) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + opts = container_of(fi, struct f_eem_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; + + eem->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); eem->port.cdc_filter = DEFAULT_FILTER; eem->port.func.name = "cdc_eem"; - eem->port.func.strings = eem_strings; /* descriptors are per-instance copies */ eem->port.func.bind = eem_bind; eem->port.func.unbind = eem_unbind; eem->port.func.set_alt = eem_set_alt; eem->port.func.setup = eem_setup; eem->port.func.disable = eem_disable; + eem->port.func.free_func = eem_free; eem->port.wrap = eem_wrap; eem->port.unwrap = eem_unwrap; eem->port.header_len = EEM_HLEN; - status = usb_add_function(c, &eem->port.func); - if (status) - kfree(eem); - return status; + return &eem->port.func; } +DECLARE_USB_FUNCTION_INIT(eem, eem_alloc_inst, eem_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index f63dc6c150d..8598c27c7d4 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -2,7 +2,7 @@ * f_fs.c -- user mode file system API for USB composite function controllers * * Copyright (C) 2010 Samsung Electronics - * Author: Michal Nazarewicz <m.nazarewicz@samsung.com> + * Author: Michal Nazarewicz <mina86@mina86.com> * * Based on inode.c (GadgetFS) which was: * Copyright (C) 2003-2004 David Brownell @@ -21,214 +21,22 @@ #include <linux/blkdev.h> #include <linux/pagemap.h> #include <linux/export.h> +#include <linux/hid.h> +#include <linux/module.h> #include <asm/unaligned.h> #include <linux/usb/composite.h> #include <linux/usb/functionfs.h> +#include <linux/aio.h> +#include <linux/mmu_context.h> +#include <linux/poll.h> -#define FUNCTIONFS_MAGIC 0xa647361 /* Chosen by a honest dice roll ;) */ - - -/* Debugging ****************************************************************/ - -#ifdef VERBOSE_DEBUG -# define pr_vdebug pr_debug -# define ffs_dump_mem(prefix, ptr, len) \ - print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len) -#else -# define pr_vdebug(...) do { } while (0) -# define ffs_dump_mem(prefix, ptr, len) do { } while (0) -#endif /* VERBOSE_DEBUG */ - -#define ENTER() pr_vdebug("%s()\n", __func__) - - -/* The data structure and setup file ****************************************/ - -enum ffs_state { - /* - * Waiting for descriptors and strings. - * - * In this state no open(2), read(2) or write(2) on epfiles - * may succeed (which should not be the problem as there - * should be no such files opened in the first place). - */ - FFS_READ_DESCRIPTORS, - FFS_READ_STRINGS, - - /* - * We've got descriptors and strings. We are or have called - * functionfs_ready_callback(). functionfs_bind() may have - * been called but we don't know. - * - * This is the only state in which operations on epfiles may - * succeed. - */ - FFS_ACTIVE, - - /* - * All endpoints have been closed. This state is also set if - * we encounter an unrecoverable error. The only - * unrecoverable error is situation when after reading strings - * from user space we fail to initialise epfiles or - * functionfs_ready_callback() returns with error (<0). - * - * In this state no open(2), read(2) or write(2) (both on ep0 - * as well as epfile) may succeed (at this point epfiles are - * unlinked and all closed so this is not a problem; ep0 is - * also closed but ep0 file exists and so open(2) on ep0 must - * fail). - */ - FFS_CLOSING -}; - - -enum ffs_setup_state { - /* There is no setup request pending. */ - FFS_NO_SETUP, - /* - * User has read events and there was a setup request event - * there. The next read/write on ep0 will handle the - * request. - */ - FFS_SETUP_PENDING, - /* - * There was event pending but before user space handled it - * some other event was introduced which canceled existing - * setup. If this state is set read/write on ep0 return - * -EIDRM. This state is only set when adding event. - */ - FFS_SETUP_CANCELED -}; - - +#include "u_fs.h" +#include "u_f.h" +#include "configfs.h" -struct ffs_epfile; -struct ffs_function; - -struct ffs_data { - struct usb_gadget *gadget; - - /* - * Protect access read/write operations, only one read/write - * at a time. As a consequence protects ep0req and company. - * While setup request is being processed (queued) this is - * held. - */ - struct mutex mutex; - - /* - * Protect access to endpoint related structures (basically - * usb_ep_queue(), usb_ep_dequeue(), etc. calls) except for - * endpoint zero. - */ - spinlock_t eps_lock; - - /* - * XXX REVISIT do we need our own request? Since we are not - * handling setup requests immediately user space may be so - * slow that another setup will be sent to the gadget but this - * time not to us but another function and then there could be - * a race. Is that the case? Or maybe we can use cdev->req - * after all, maybe we just need some spinlock for that? - */ - struct usb_request *ep0req; /* P: mutex */ - struct completion ep0req_completion; /* P: mutex */ - int ep0req_status; /* P: mutex */ - - /* reference counter */ - atomic_t ref; - /* how many files are opened (EP0 and others) */ - atomic_t opened; - - /* EP0 state */ - enum ffs_state state; - - /* - * Possible transitions: - * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock - * happens only in ep0 read which is P: mutex - * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock - * happens only in ep0 i/o which is P: mutex - * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELED -- P: ev.waitq.lock - * + FFS_SETUP_CANCELED -> FFS_NO_SETUP -- cmpxchg - */ - enum ffs_setup_state setup_state; - -#define FFS_SETUP_STATE(ffs) \ - ((enum ffs_setup_state)cmpxchg(&(ffs)->setup_state, \ - FFS_SETUP_CANCELED, FFS_NO_SETUP)) - - /* Events & such. */ - struct { - u8 types[4]; - unsigned short count; - /* XXX REVISIT need to update it in some places, or do we? */ - unsigned short can_stall; - struct usb_ctrlrequest setup; - - wait_queue_head_t waitq; - } ev; /* the whole structure, P: ev.waitq.lock */ - - /* Flags */ - unsigned long flags; -#define FFS_FL_CALL_CLOSED_CALLBACK 0 -#define FFS_FL_BOUND 1 - - /* Active function */ - struct ffs_function *func; - - /* - * Device name, write once when file system is mounted. - * Intended for user to read if she wants. - */ - const char *dev_name; - /* Private data for our user (ie. gadget). Managed by user. */ - void *private_data; - - /* filled by __ffs_data_got_descs() */ - /* - * Real descriptors are 16 bytes after raw_descs (so you need - * to skip 16 bytes (ie. ffs->raw_descs + 16) to get to the - * first full speed descriptor). raw_descs_length and - * raw_fs_descs_length do not have those 16 bytes added. - */ - const void *raw_descs; - unsigned raw_descs_length; - unsigned raw_fs_descs_length; - unsigned fs_descs_count; - unsigned hs_descs_count; - - unsigned short strings_count; - unsigned short interfaces_count; - unsigned short eps_count; - unsigned short _pad1; - - /* filled by __ffs_data_got_strings() */ - /* ids in stringtabs are set in functionfs_bind() */ - const void *raw_strings; - struct usb_gadget_strings **stringtabs; - - /* - * File system's super block, write once when file system is - * mounted. - */ - struct super_block *sb; - - /* File permissions, written once when fs is mounted */ - struct ffs_file_perms { - umode_t mode; - uid_t uid; - gid_t gid; - } file_perms; - - /* - * The endpoint files, filled by ffs_epfiles_create(), - * destroyed by ffs_epfiles_destroy(). - */ - struct ffs_epfile *epfiles; -}; +#define FUNCTIONFS_MAGIC 0xa647361 /* Chosen by a honest dice roll ;) */ /* Reference counter handling */ static void ffs_data_get(struct ffs_data *ffs); @@ -269,15 +77,20 @@ static struct ffs_function *ffs_func_from_usb(struct usb_function *f) return container_of(f, struct ffs_function, function); } -static void ffs_func_free(struct ffs_function *func); + +static inline enum ffs_setup_state +ffs_setup_state_clear_cancelled(struct ffs_data *ffs) +{ + return (enum ffs_setup_state) + cmpxchg(&ffs->setup_state, FFS_SETUP_CANCELLED, FFS_NO_SETUP); +} + static void ffs_func_eps_disable(struct ffs_function *func); static int __must_check ffs_func_eps_enable(struct ffs_function *func); static int ffs_func_bind(struct usb_configuration *, struct usb_function *); -static void ffs_func_unbind(struct usb_configuration *, - struct usb_function *); static int ffs_func_set_alt(struct usb_function *, unsigned, unsigned); static void ffs_func_disable(struct usb_function *); static int ffs_func_setup(struct usb_function *, @@ -296,8 +109,8 @@ struct ffs_ep { struct usb_ep *ep; /* P: ffs->eps_lock */ struct usb_request *req; /* P: epfile->mutex */ - /* [0]: full speed, [1]: high speed */ - struct usb_endpoint_descriptor *descs[2]; + /* [0]: full speed, [1]: high speed, [2]: super speed */ + struct usb_endpoint_descriptor *descs[3]; u8 num; @@ -322,6 +135,25 @@ struct ffs_epfile { unsigned char _pad; }; +/* ffs_io_data structure ***************************************************/ + +struct ffs_io_data { + bool aio; + bool read; + + struct kiocb *kiocb; + const struct iovec *iovec; + unsigned long nr_segs; + char __user *buf; + size_t len; + + struct mm_struct *mm; + struct work_struct work; + + struct usb_ep *ep; + struct usb_request *req; +}; + static int __must_check ffs_epfiles_create(struct ffs_data *ffs); static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count); @@ -330,12 +162,25 @@ ffs_sb_create_file(struct super_block *sb, const char *name, void *data, const struct file_operations *fops, struct dentry **dentry_p); +/* Devices management *******************************************************/ + +DEFINE_MUTEX(ffs_lock); +EXPORT_SYMBOL_GPL(ffs_lock); + +static struct ffs_dev *_ffs_find_dev(const char *name); +static struct ffs_dev *_ffs_alloc_dev(void); +static int _ffs_name_dev(struct ffs_dev *dev, const char *name); +static void _ffs_free_dev(struct ffs_dev *dev); +static void *ffs_acquire_dev(const char *dev_name); +static void ffs_release_dev(struct ffs_data *ffs_data); +static int ffs_ready(struct ffs_data *ffs); +static void ffs_closed(struct ffs_data *ffs); /* Misc helper functions ****************************************************/ static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock) __attribute__((warn_unused_result, nonnull)); -static char *ffs_prepare_buffer(const char * __user buf, size_t len) +static char *ffs_prepare_buffer(const char __user *buf, size_t len) __attribute__((warn_unused_result, nonnull)); @@ -368,7 +213,7 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len) if (req->buf == NULL) req->buf = (void *)0xDEADBABE; - INIT_COMPLETION(ffs->ep0req_completion); + reinit_completion(&ffs->ep0req_completion); ret = usb_ep_queue(ffs->gadget->ep0, req, GFP_ATOMIC); if (unlikely(ret < 0)) @@ -381,7 +226,7 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len) } ffs->setup_state = FFS_NO_SETUP; - return ffs->ep0req_status; + return req->status ? req->status : req->actual; } static int __ffs_ep0_stall(struct ffs_data *ffs) @@ -407,7 +252,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, ENTER(); /* Fast check if setup was canceled */ - if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) + if (ffs_setup_state_clear_cancelled(ffs) == FFS_SETUP_CANCELLED) return -EIDRM; /* Acquire mutex */ @@ -455,7 +300,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, ffs->state = FFS_ACTIVE; mutex_unlock(&ffs->mutex); - ret = functionfs_ready_callback(ffs); + ret = ffs_ready(ffs); if (unlikely(ret < 0)) { ffs->state = FFS_CLOSING; return ret; @@ -473,8 +318,8 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, * rather then _irqsave */ spin_lock_irq(&ffs->ev.waitq.lock); - switch (FFS_SETUP_STATE(ffs)) { - case FFS_SETUP_CANCELED: + switch (ffs_setup_state_clear_cancelled(ffs)) { + case FFS_SETUP_CANCELLED: ret = -EIDRM; goto done_spin; @@ -509,7 +354,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, /* * We are guaranteed to be still in FFS_ACTIVE state * but the state of setup could have changed from - * FFS_SETUP_PENDING to FFS_SETUP_CANCELED so we need + * FFS_SETUP_PENDING to FFS_SETUP_CANCELLED so we need * to check for that. If that happened we copied data * from user space in vain but it's unlikely. * @@ -518,7 +363,8 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, * transition can be performed and it's protected by * mutex. */ - if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) { + if (ffs_setup_state_clear_cancelled(ffs) == + FFS_SETUP_CANCELLED) { ret = -EIDRM; done_spin: spin_unlock_irq(&ffs->ev.waitq.lock); @@ -584,7 +430,7 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf, ENTER(); /* Fast check if setup was canceled */ - if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) + if (ffs_setup_state_clear_cancelled(ffs) == FFS_SETUP_CANCELLED) return -EIDRM; /* Acquire mutex */ @@ -604,8 +450,8 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf, */ spin_lock_irq(&ffs->ev.waitq.lock); - switch (FFS_SETUP_STATE(ffs)) { - case FFS_SETUP_CANCELED: + switch (ffs_setup_state_clear_cancelled(ffs)) { + case FFS_SETUP_CANCELLED: ret = -EIDRM; break; @@ -652,7 +498,8 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf, spin_lock_irq(&ffs->ev.waitq.lock); /* See ffs_ep0_write() */ - if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) { + if (ffs_setup_state_clear_cancelled(ffs) == + FFS_SETUP_CANCELLED) { ret = -EIDRM; break; } @@ -712,7 +559,7 @@ static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value) if (code == FUNCTIONFS_INTERFACE_REVMAP) { struct ffs_function *func = ffs->func; ret = func ? ffs_func_revmap_intf(func, value) : -ENODEV; - } else if (gadget->ops->ioctl) { + } else if (gadget && gadget->ops->ioctl) { ret = gadget->ops->ioctl(gadget, code, value); } else { ret = -ENOTTY; @@ -721,8 +568,46 @@ static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value) return ret; } +static unsigned int ffs_ep0_poll(struct file *file, poll_table *wait) +{ + struct ffs_data *ffs = file->private_data; + unsigned int mask = POLLWRNORM; + int ret; + + poll_wait(file, &ffs->ev.waitq, wait); + + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (unlikely(ret < 0)) + return mask; + + switch (ffs->state) { + case FFS_READ_DESCRIPTORS: + case FFS_READ_STRINGS: + mask |= POLLOUT; + break; + + case FFS_ACTIVE: + switch (ffs->setup_state) { + case FFS_NO_SETUP: + if (ffs->ev.count) + mask |= POLLIN; + break; + + case FFS_SETUP_PENDING: + case FFS_SETUP_CANCELLED: + mask |= (POLLIN | POLLOUT); + break; + } + case FFS_CLOSING: + break; + } + + mutex_unlock(&ffs->mutex); + + return mask; +} + static const struct file_operations ffs_ep0_operations = { - .owner = THIS_MODULE, .llseek = no_llseek, .open = ffs_ep0_open, @@ -730,6 +615,7 @@ static const struct file_operations ffs_ep0_operations = { .read = ffs_ep0_read, .release = ffs_ep0_release, .unlocked_ioctl = ffs_ep0_ioctl, + .poll = ffs_ep0_poll, }; @@ -745,114 +631,226 @@ static void ffs_epfile_io_complete(struct usb_ep *_ep, struct usb_request *req) } } -static ssize_t ffs_epfile_io(struct file *file, - char __user *buf, size_t len, int read) +static void ffs_user_copy_worker(struct work_struct *work) +{ + struct ffs_io_data *io_data = container_of(work, struct ffs_io_data, + work); + int ret = io_data->req->status ? io_data->req->status : + io_data->req->actual; + + if (io_data->read && ret > 0) { + int i; + size_t pos = 0; + use_mm(io_data->mm); + for (i = 0; i < io_data->nr_segs; i++) { + if (unlikely(copy_to_user(io_data->iovec[i].iov_base, + &io_data->buf[pos], + io_data->iovec[i].iov_len))) { + ret = -EFAULT; + break; + } + pos += io_data->iovec[i].iov_len; + } + unuse_mm(io_data->mm); + } + + aio_complete(io_data->kiocb, ret, ret); + + usb_ep_free_request(io_data->ep, io_data->req); + + io_data->kiocb->private = NULL; + if (io_data->read) + kfree(io_data->iovec); + kfree(io_data->buf); + kfree(io_data); +} + +static void ffs_epfile_async_io_complete(struct usb_ep *_ep, + struct usb_request *req) +{ + struct ffs_io_data *io_data = req->context; + + ENTER(); + + INIT_WORK(&io_data->work, ffs_user_copy_worker); + schedule_work(&io_data->work); +} + +static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) { struct ffs_epfile *epfile = file->private_data; struct ffs_ep *ep; char *data = NULL; - ssize_t ret; + ssize_t ret, data_len; int halt; - goto first_try; - do { - spin_unlock_irq(&epfile->ffs->eps_lock); - mutex_unlock(&epfile->mutex); + /* Are we still active? */ + if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) { + ret = -ENODEV; + goto error; + } -first_try: - /* Are we still active? */ - if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) { - ret = -ENODEV; + /* Wait for endpoint to be enabled */ + ep = epfile->ep; + if (!ep) { + if (file->f_flags & O_NONBLOCK) { + ret = -EAGAIN; goto error; } - /* Wait for endpoint to be enabled */ - ep = epfile->ep; - if (!ep) { - if (file->f_flags & O_NONBLOCK) { - ret = -EAGAIN; - goto error; - } - - if (wait_event_interruptible(epfile->wait, - (ep = epfile->ep))) { - ret = -EINTR; - goto error; - } - } - - /* Do we halt? */ - halt = !read == !epfile->in; - if (halt && epfile->isoc) { - ret = -EINVAL; + ret = wait_event_interruptible(epfile->wait, (ep = epfile->ep)); + if (ret) { + ret = -EINTR; goto error; } + } + + /* Do we halt? */ + halt = (!io_data->read == !epfile->in); + if (halt && epfile->isoc) { + ret = -EINVAL; + goto error; + } + + /* Allocate & copy */ + if (!halt) { + /* + * if we _do_ wait above, the epfile->ffs->gadget might be NULL + * before the waiting completes, so do not assign to 'gadget' earlier + */ + struct usb_gadget *gadget = epfile->ffs->gadget; - /* Allocate & copy */ - if (!halt && !data) { - data = kzalloc(len, GFP_KERNEL); - if (unlikely(!data)) - return -ENOMEM; + spin_lock_irq(&epfile->ffs->eps_lock); + /* In the meantime, endpoint got disabled or changed. */ + if (epfile->ep != ep) { + spin_unlock_irq(&epfile->ffs->eps_lock); + return -ESHUTDOWN; + } + /* + * Controller may require buffer size to be aligned to + * maxpacketsize of an out endpoint. + */ + data_len = io_data->read ? + usb_ep_align_maybe(gadget, ep->ep, io_data->len) : + io_data->len; + spin_unlock_irq(&epfile->ffs->eps_lock); - if (!read && - unlikely(__copy_from_user(data, buf, len))) { + data = kmalloc(data_len, GFP_KERNEL); + if (unlikely(!data)) + return -ENOMEM; + if (io_data->aio && !io_data->read) { + int i; + size_t pos = 0; + for (i = 0; i < io_data->nr_segs; i++) { + if (unlikely(copy_from_user(&data[pos], + io_data->iovec[i].iov_base, + io_data->iovec[i].iov_len))) { + ret = -EFAULT; + goto error; + } + pos += io_data->iovec[i].iov_len; + } + } else { + if (!io_data->read && + unlikely(__copy_from_user(data, io_data->buf, + io_data->len))) { ret = -EFAULT; goto error; } } + } - /* We will be using request */ - ret = ffs_mutex_lock(&epfile->mutex, - file->f_flags & O_NONBLOCK); - if (unlikely(ret)) - goto error; - - /* - * We're called from user space, we can use _irq rather then - * _irqsave - */ - spin_lock_irq(&epfile->ffs->eps_lock); + /* We will be using request */ + ret = ffs_mutex_lock(&epfile->mutex, file->f_flags & O_NONBLOCK); + if (unlikely(ret)) + goto error; - /* - * While we were acquiring mutex endpoint got disabled - * or changed? - */ - } while (unlikely(epfile->ep != ep)); + spin_lock_irq(&epfile->ffs->eps_lock); - /* Halt */ - if (unlikely(halt)) { + if (epfile->ep != ep) { + /* In the meantime, endpoint got disabled or changed. */ + ret = -ESHUTDOWN; + spin_unlock_irq(&epfile->ffs->eps_lock); + } else if (halt) { + /* Halt */ if (likely(epfile->ep == ep) && !WARN_ON(!ep->ep)) usb_ep_set_halt(ep->ep); spin_unlock_irq(&epfile->ffs->eps_lock); ret = -EBADMSG; } else { /* Fire the request */ - DECLARE_COMPLETION_ONSTACK(done); + struct usb_request *req; - struct usb_request *req = ep->req; - req->context = &done; - req->complete = ffs_epfile_io_complete; - req->buf = data; - req->length = len; + if (io_data->aio) { + req = usb_ep_alloc_request(ep->ep, GFP_KERNEL); + if (unlikely(!req)) + goto error_lock; - ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC); + req->buf = data; + req->length = io_data->len; - spin_unlock_irq(&epfile->ffs->eps_lock); + io_data->buf = data; + io_data->ep = ep->ep; + io_data->req = req; - if (unlikely(ret < 0)) { - /* nop */ - } else if (unlikely(wait_for_completion_interruptible(&done))) { - ret = -EINTR; - usb_ep_dequeue(ep->ep, req); + req->context = io_data; + req->complete = ffs_epfile_async_io_complete; + + ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC); + if (unlikely(ret)) { + usb_ep_free_request(ep->ep, req); + goto error_lock; + } + ret = -EIOCBQUEUED; + + spin_unlock_irq(&epfile->ffs->eps_lock); } else { - ret = ep->status; - if (read && ret > 0 && - unlikely(copy_to_user(buf, data, ret))) - ret = -EFAULT; + DECLARE_COMPLETION_ONSTACK(done); + + req = ep->req; + req->buf = data; + req->length = io_data->len; + + req->context = &done; + req->complete = ffs_epfile_io_complete; + + ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC); + + spin_unlock_irq(&epfile->ffs->eps_lock); + + if (unlikely(ret < 0)) { + /* nop */ + } else if (unlikely( + wait_for_completion_interruptible(&done))) { + ret = -EINTR; + usb_ep_dequeue(ep->ep, req); + } else { + /* + * XXX We may end up silently droping data + * here. Since data_len (i.e. req->length) may + * be bigger than len (after being rounded up + * to maxpacketsize), we may end up with more + * data then user space has space for. + */ + ret = ep->status; + if (io_data->read && ret > 0) { + ret = min_t(size_t, ret, io_data->len); + + if (unlikely(copy_to_user(io_data->buf, + data, ret))) + ret = -EFAULT; + } + } + kfree(data); } } mutex_unlock(&epfile->mutex); + return ret; + +error_lock: + spin_unlock_irq(&epfile->ffs->eps_lock); + mutex_unlock(&epfile->mutex); error: kfree(data); return ret; @@ -862,17 +860,31 @@ static ssize_t ffs_epfile_write(struct file *file, const char __user *buf, size_t len, loff_t *ptr) { + struct ffs_io_data io_data; + ENTER(); - return ffs_epfile_io(file, (char __user *)buf, len, 0); + io_data.aio = false; + io_data.read = false; + io_data.buf = (char * __user)buf; + io_data.len = len; + + return ffs_epfile_io(file, &io_data); } static ssize_t ffs_epfile_read(struct file *file, char __user *buf, size_t len, loff_t *ptr) { + struct ffs_io_data io_data; + ENTER(); - return ffs_epfile_io(file, buf, len, 1); + io_data.aio = false; + io_data.read = true; + io_data.buf = buf; + io_data.len = len; + + return ffs_epfile_io(file, &io_data); } static int @@ -891,6 +903,89 @@ ffs_epfile_open(struct inode *inode, struct file *file) return 0; } +static int ffs_aio_cancel(struct kiocb *kiocb) +{ + struct ffs_io_data *io_data = kiocb->private; + struct ffs_epfile *epfile = kiocb->ki_filp->private_data; + int value; + + ENTER(); + + spin_lock_irq(&epfile->ffs->eps_lock); + + if (likely(io_data && io_data->ep && io_data->req)) + value = usb_ep_dequeue(io_data->ep, io_data->req); + else + value = -EINVAL; + + spin_unlock_irq(&epfile->ffs->eps_lock); + + return value; +} + +static ssize_t ffs_epfile_aio_write(struct kiocb *kiocb, + const struct iovec *iovec, + unsigned long nr_segs, loff_t loff) +{ + struct ffs_io_data *io_data; + + ENTER(); + + io_data = kmalloc(sizeof(*io_data), GFP_KERNEL); + if (unlikely(!io_data)) + return -ENOMEM; + + io_data->aio = true; + io_data->read = false; + io_data->kiocb = kiocb; + io_data->iovec = iovec; + io_data->nr_segs = nr_segs; + io_data->len = kiocb->ki_nbytes; + io_data->mm = current->mm; + + kiocb->private = io_data; + + kiocb_set_cancel_fn(kiocb, ffs_aio_cancel); + + return ffs_epfile_io(kiocb->ki_filp, io_data); +} + +static ssize_t ffs_epfile_aio_read(struct kiocb *kiocb, + const struct iovec *iovec, + unsigned long nr_segs, loff_t loff) +{ + struct ffs_io_data *io_data; + struct iovec *iovec_copy; + + ENTER(); + + iovec_copy = kmalloc_array(nr_segs, sizeof(*iovec_copy), GFP_KERNEL); + if (unlikely(!iovec_copy)) + return -ENOMEM; + + memcpy(iovec_copy, iovec, sizeof(struct iovec)*nr_segs); + + io_data = kmalloc(sizeof(*io_data), GFP_KERNEL); + if (unlikely(!io_data)) { + kfree(iovec_copy); + return -ENOMEM; + } + + io_data->aio = true; + io_data->read = true; + io_data->kiocb = kiocb; + io_data->iovec = iovec_copy; + io_data->nr_segs = nr_segs; + io_data->len = kiocb->ki_nbytes; + io_data->mm = current->mm; + + kiocb->private = io_data; + + kiocb_set_cancel_fn(kiocb, ffs_aio_cancel); + + return ffs_epfile_io(kiocb->ki_filp, io_data); +} + static int ffs_epfile_release(struct inode *inode, struct file *file) { @@ -942,12 +1037,13 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code, } static const struct file_operations ffs_epfile_operations = { - .owner = THIS_MODULE, .llseek = no_llseek, .open = ffs_epfile_open, .write = ffs_epfile_write, .read = ffs_epfile_read, + .aio_write = ffs_epfile_aio_write, + .aio_read = ffs_epfile_aio_read, .release = ffs_epfile_release, .unlocked_ioctl = ffs_epfile_ioctl, }; @@ -1031,25 +1127,19 @@ struct ffs_sb_fill_data { struct ffs_file_perms perms; umode_t root_mode; const char *dev_name; + struct ffs_data *ffs_data; }; static int ffs_sb_fill(struct super_block *sb, void *_data, int silent) { struct ffs_sb_fill_data *data = _data; struct inode *inode; - struct ffs_data *ffs; + struct ffs_data *ffs = data->ffs_data; ENTER(); - /* Initialise data */ - ffs = ffs_data_new(); - if (unlikely(!ffs)) - goto Enomem; - ffs->sb = sb; - ffs->dev_name = data->dev_name; - ffs->file_perms = data->perms; - + data->ffs_data = NULL; sb->s_fs_info = ffs; sb->s_blocksize = PAGE_CACHE_SIZE; sb->s_blocksize_bits = PAGE_CACHE_SHIFT; @@ -1063,23 +1153,16 @@ static int ffs_sb_fill(struct super_block *sb, void *_data, int silent) &simple_dir_operations, &simple_dir_inode_operations, &data->perms); - if (unlikely(!inode)) - goto Enomem; - sb->s_root = d_alloc_root(inode); - if (unlikely(!sb->s_root)) { - iput(inode); - goto Enomem; - } + sb->s_root = d_make_root(inode); + if (unlikely(!sb->s_root)) + return -ENOMEM; /* EP0 file */ if (unlikely(!ffs_sb_create_file(sb, "ep0", ffs, &ffs_ep0_operations, NULL))) - goto Enomem; + return -ENOMEM; return 0; - -Enomem: - return -ENOMEM; } static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) @@ -1090,8 +1173,8 @@ static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) return 0; for (;;) { - char *end, *eq, *comma; unsigned long value; + char *eq, *comma; /* Option limit */ comma = strchr(opts, ','); @@ -1107,8 +1190,7 @@ static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) *eq = 0; /* Parse value */ - value = simple_strtoul(eq + 1, &end, 0); - if (unlikely(*end != ',' && *end != 0)) { + if (kstrtoul(eq + 1, 0, &value)) { pr_err("%s: invalid value: %s\n", opts, eq + 1); return -EINVAL; } @@ -1134,12 +1216,21 @@ static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) break; case 3: - if (!memcmp(opts, "uid", 3)) - data->perms.uid = value; - else if (!memcmp(opts, "gid", 3)) - data->perms.gid = value; - else + if (!memcmp(opts, "uid", 3)) { + data->perms.uid = make_kuid(current_user_ns(), value); + if (!uid_valid(data->perms.uid)) { + pr_err("%s: unmapped value: %lu\n", opts, value); + return -EINVAL; + } + } else if (!memcmp(opts, "gid", 3)) { + data->perms.gid = make_kgid(current_user_ns(), value); + if (!gid_valid(data->perms.gid)) { + pr_err("%s: unmapped value: %lu\n", opts, value); + return -EINVAL; + } + } else { goto invalid; + } break; default: @@ -1166,25 +1257,47 @@ ffs_fs_mount(struct file_system_type *t, int flags, struct ffs_sb_fill_data data = { .perms = { .mode = S_IFREG | 0600, - .uid = 0, - .gid = 0 + .uid = GLOBAL_ROOT_UID, + .gid = GLOBAL_ROOT_GID, }, .root_mode = S_IFDIR | 0500, }; + struct dentry *rv; int ret; + void *ffs_dev; + struct ffs_data *ffs; ENTER(); - ret = functionfs_check_dev_callback(dev_name); - if (unlikely(ret < 0)) - return ERR_PTR(ret); - ret = ffs_fs_parse_opts(&data, opts); if (unlikely(ret < 0)) return ERR_PTR(ret); - data.dev_name = dev_name; - return mount_single(t, flags, &data, ffs_sb_fill); + ffs = ffs_data_new(); + if (unlikely(!ffs)) + return ERR_PTR(-ENOMEM); + ffs->file_perms = data.perms; + + ffs->dev_name = kstrdup(dev_name, GFP_KERNEL); + if (unlikely(!ffs->dev_name)) { + ffs_data_put(ffs); + return ERR_PTR(-ENOMEM); + } + + ffs_dev = ffs_acquire_dev(dev_name); + if (IS_ERR(ffs_dev)) { + ffs_data_put(ffs); + return ERR_CAST(ffs_dev); + } + ffs->private_data = ffs_dev; + data.ffs_data = ffs; + + rv = mount_nodev(t, flags, &data, ffs_sb_fill); + if (IS_ERR(rv) && data.ffs_data) { + ffs_release_dev(data.ffs_data); + ffs_data_put(data.ffs_data); + } + return rv; } static void @@ -1193,8 +1306,10 @@ ffs_fs_kill_sb(struct super_block *sb) ENTER(); kill_litter_super(sb); - if (sb->s_fs_info) + if (sb->s_fs_info) { + ffs_release_dev(sb->s_fs_info); ffs_data_put(sb->s_fs_info); + } } static struct file_system_type ffs_fs_type = { @@ -1203,6 +1318,7 @@ static struct file_system_type ffs_fs_type = { .mount = ffs_fs_mount, .kill_sb = ffs_fs_kill_sb, }; +MODULE_ALIAS_FS("functionfs"); /* Driver's main init/cleanup functions *************************************/ @@ -1258,10 +1374,9 @@ static void ffs_data_put(struct ffs_data *ffs) if (unlikely(atomic_dec_and_test(&ffs->ref))) { pr_info("%s(): freeing\n", __func__); ffs_data_clear(ffs); - BUG_ON(mutex_is_locked(&ffs->mutex) || - spin_is_locked(&ffs->ev.waitq.lock) || - waitqueue_active(&ffs->ev.waitq) || + BUG_ON(waitqueue_active(&ffs->ev.waitq) || waitqueue_active(&ffs->ep0req_completion.wait)); + kfree(ffs->dev_name); kfree(ffs); } } @@ -1282,7 +1397,7 @@ static struct ffs_data *ffs_data_new(void) { struct ffs_data *ffs = kzalloc(sizeof *ffs, GFP_KERNEL); if (unlikely(!ffs)) - return 0; + return NULL; ENTER(); @@ -1305,14 +1420,14 @@ static void ffs_data_clear(struct ffs_data *ffs) ENTER(); if (test_and_clear_bit(FFS_FL_CALL_CLOSED_CALLBACK, &ffs->flags)) - functionfs_closed_callback(ffs); + ffs_closed(ffs); BUG_ON(ffs->gadget); if (ffs->epfiles) ffs_epfiles_destroy(ffs->epfiles, ffs->eps_count); - kfree(ffs->raw_descs); + kfree(ffs->raw_descs_data); kfree(ffs->raw_strings); kfree(ffs->stringtabs); } @@ -1324,14 +1439,15 @@ static void ffs_data_reset(struct ffs_data *ffs) ffs_data_clear(ffs); ffs->epfiles = NULL; + ffs->raw_descs_data = NULL; ffs->raw_descs = NULL; ffs->raw_strings = NULL; ffs->stringtabs = NULL; ffs->raw_descs_length = 0; - ffs->raw_fs_descs_length = 0; ffs->fs_descs_count = 0; ffs->hs_descs_count = 0; + ffs->ss_descs_count = 0; ffs->strings_count = 0; ffs->interfaces_count = 0; @@ -1367,11 +1483,13 @@ static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev) ffs->ep0req->context = ffs; lang = ffs->stringtabs; - for (lang = ffs->stringtabs; *lang; ++lang) { - struct usb_string *str = (*lang)->strings; - int id = first_id; - for (; str->s; ++id, ++str) - str->id = id; + if (lang) { + for (; *lang; ++lang) { + struct usb_string *str = (*lang)->strings; + int id = first_id; + for (; str->s; ++id, ++str) + str->id = id; + } } ffs->gadget = cdev->gadget; @@ -1387,6 +1505,7 @@ static void functionfs_unbind(struct ffs_data *ffs) usb_ep_free_request(ffs->gadget->ep0, ffs->ep0req); ffs->ep0req = NULL; ffs->gadget = NULL; + clear_bit(FFS_FL_BOUND, &ffs->flags); ffs_data_put(ffs); } } @@ -1440,57 +1559,6 @@ static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) kfree(epfiles); } -static int functionfs_bind_config(struct usb_composite_dev *cdev, - struct usb_configuration *c, - struct ffs_data *ffs) -{ - struct ffs_function *func; - int ret; - - ENTER(); - - func = kzalloc(sizeof *func, GFP_KERNEL); - if (unlikely(!func)) - return -ENOMEM; - - func->function.name = "Function FS Gadget"; - func->function.strings = ffs->stringtabs; - - func->function.bind = ffs_func_bind; - func->function.unbind = ffs_func_unbind; - func->function.set_alt = ffs_func_set_alt; - func->function.disable = ffs_func_disable; - func->function.setup = ffs_func_setup; - func->function.suspend = ffs_func_suspend; - func->function.resume = ffs_func_resume; - - func->conf = c; - func->gadget = cdev->gadget; - func->ffs = ffs; - ffs_data_get(ffs); - - ret = usb_add_function(c, &func->function); - if (unlikely(ret)) - ffs_func_free(func); - - return ret; -} - -static void ffs_func_free(struct ffs_function *func) -{ - ENTER(); - - ffs_data_put(func->ffs); - - kfree(func->eps); - /* - * eps and interfaces_nums are allocated in the same chunk so - * only one free is required. Descriptors are also allocated - * in the same chunk. - */ - - kfree(func); -} static void ffs_func_eps_disable(struct ffs_function *func) { @@ -1524,7 +1592,24 @@ static int ffs_func_eps_enable(struct ffs_function *func) spin_lock_irqsave(&func->ffs->eps_lock, flags); do { struct usb_endpoint_descriptor *ds; - ds = ep->descs[ep->descs[1] ? 1 : 0]; + int desc_idx; + + if (ffs->gadget->speed == USB_SPEED_SUPER) + desc_idx = 2; + else if (ffs->gadget->speed == USB_SPEED_HIGH) + desc_idx = 1; + else + desc_idx = 0; + + /* fall-back to lower speed if desc missing for current speed */ + do { + ds = ep->descs[desc_idx]; + } while (!ds && --desc_idx >= 0); + + if (!ds) { + ret = -EINVAL; + break; + } ep->ep->driver_data = ep; ep->ep->desc = ds; @@ -1638,6 +1723,12 @@ static int __must_check ffs_do_desc(char *data, unsigned len, } break; + case HID_DT_HID: + pr_vdebug("hid descriptor\n"); + if (length != sizeof(struct hid_descriptor)) + goto inv_length; + break; + case USB_DT_OTG: if (length != sizeof(struct usb_otg_descriptor)) goto inv_length; @@ -1653,6 +1744,12 @@ static int __must_check ffs_do_desc(char *data, unsigned len, } break; + case USB_DT_SS_ENDPOINT_COMP: + pr_vdebug("EP SS companion descriptor\n"); + if (length != sizeof(struct usb_ss_ep_comp_descriptor)) + goto inv_length; + break; + case USB_DT_OTHER_SPEED_CONFIG: case USB_DT_INTERFACE_POWER: case USB_DT_DEBUG: @@ -1763,60 +1860,76 @@ static int __ffs_data_do_entity(enum ffs_entity_type type, static int __ffs_data_got_descs(struct ffs_data *ffs, char *const _data, size_t len) { - unsigned fs_count, hs_count; - int fs_len, ret = -EINVAL; - char *data = _data; + char *data = _data, *raw_descs; + unsigned counts[3], flags; + int ret = -EINVAL, i; ENTER(); - if (unlikely(get_unaligned_le32(data) != FUNCTIONFS_DESCRIPTORS_MAGIC || - get_unaligned_le32(data + 4) != len)) + if (get_unaligned_le32(data + 4) != len) goto error; - fs_count = get_unaligned_le32(data + 8); - hs_count = get_unaligned_le32(data + 12); - if (!fs_count && !hs_count) - goto einval; - - data += 16; - len -= 16; - - if (likely(fs_count)) { - fs_len = ffs_do_descs(fs_count, data, len, - __ffs_data_do_entity, ffs); - if (unlikely(fs_len < 0)) { - ret = fs_len; + switch (get_unaligned_le32(data)) { + case FUNCTIONFS_DESCRIPTORS_MAGIC: + flags = FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC; + data += 8; + len -= 8; + break; + case FUNCTIONFS_DESCRIPTORS_MAGIC_V2: + flags = get_unaligned_le32(data + 8); + if (flags & ~(FUNCTIONFS_HAS_FS_DESC | + FUNCTIONFS_HAS_HS_DESC | + FUNCTIONFS_HAS_SS_DESC)) { + ret = -ENOSYS; goto error; } + data += 12; + len -= 12; + break; + default: + goto error; + } - data += fs_len; - len -= fs_len; - } else { - fs_len = 0; + /* Read fs_count, hs_count and ss_count (if present) */ + for (i = 0; i < 3; ++i) { + if (!(flags & (1 << i))) { + counts[i] = 0; + } else if (len < 4) { + goto error; + } else { + counts[i] = get_unaligned_le32(data); + data += 4; + len -= 4; + } } - if (likely(hs_count)) { - ret = ffs_do_descs(hs_count, data, len, + /* Read descriptors */ + raw_descs = data; + for (i = 0; i < 3; ++i) { + if (!counts[i]) + continue; + ret = ffs_do_descs(counts[i], data, len, __ffs_data_do_entity, ffs); - if (unlikely(ret < 0)) + if (ret < 0) goto error; - } else { - ret = 0; + data += ret; + len -= ret; } - if (unlikely(len != ret)) - goto einval; + if (raw_descs == data || len) { + ret = -EINVAL; + goto error; + } - ffs->raw_fs_descs_length = fs_len; - ffs->raw_descs_length = fs_len + ret; - ffs->raw_descs = _data; - ffs->fs_descs_count = fs_count; - ffs->hs_descs_count = hs_count; + ffs->raw_descs_data = _data; + ffs->raw_descs = raw_descs; + ffs->raw_descs_length = data - raw_descs; + ffs->fs_descs_count = counts[0]; + ffs->hs_descs_count = counts[1]; + ffs->ss_descs_count = counts[2]; return 0; -einval: - ret = -EINVAL; error: kfree(_data); return ret; @@ -1858,30 +1971,34 @@ static int __ffs_data_got_strings(struct ffs_data *ffs, /* Allocate everything in one chunk so there's less maintenance. */ { - struct { - struct usb_gadget_strings *stringtabs[lang_count + 1]; - struct usb_gadget_strings stringtab[lang_count]; - struct usb_string strings[lang_count*(needed_count+1)]; - } *d; unsigned i = 0; + vla_group(d); + vla_item(d, struct usb_gadget_strings *, stringtabs, + lang_count + 1); + vla_item(d, struct usb_gadget_strings, stringtab, lang_count); + vla_item(d, struct usb_string, strings, + lang_count*(needed_count+1)); + + char *vlabuf = kmalloc(vla_group_size(d), GFP_KERNEL); - d = kmalloc(sizeof *d, GFP_KERNEL); - if (unlikely(!d)) { + if (unlikely(!vlabuf)) { kfree(_data); return -ENOMEM; } - stringtabs = d->stringtabs; - t = d->stringtab; + /* Initialize the VLA pointers */ + stringtabs = vla_ptr(vlabuf, d, stringtabs); + t = vla_ptr(vlabuf, d, stringtab); i = lang_count; do { *stringtabs++ = t++; } while (--i); *stringtabs = NULL; - stringtabs = d->stringtabs; - t = d->stringtab; - s = d->strings; + /* stringtabs = vlabuf = d_stringtabs for later kfree */ + stringtabs = vla_ptr(vlabuf, d, stringtabs); + t = vla_ptr(vlabuf, d, stringtab); + s = vla_ptr(vlabuf, d, strings); strings = s; } @@ -1969,7 +2086,7 @@ static void __ffs_event_add(struct ffs_data *ffs, * the source does nothing. */ if (ffs->setup_state == FFS_SETUP_PENDING) - ffs->setup_state = FFS_SETUP_CANCELED; + ffs->setup_state = FFS_SETUP_CANCELLED; switch (type) { case FUNCTIONFS_RESUME: @@ -2030,21 +2147,28 @@ static int __ffs_func_bind_do_descs(enum ffs_entity_type type, u8 *valuep, struct usb_endpoint_descriptor *ds = (void *)desc; struct ffs_function *func = priv; struct ffs_ep *ffs_ep; - - /* - * If hs_descriptors is not NULL then we are reading hs - * descriptors now - */ - const int isHS = func->function.hs_descriptors != NULL; - unsigned idx; + unsigned ep_desc_id, idx; + static const char *speed_names[] = { "full", "high", "super" }; if (type != FFS_DESCRIPTOR) return 0; - if (isHS) + /* + * If ss_descriptors is not NULL, we are reading super speed + * descriptors; if hs_descriptors is not NULL, we are reading high + * speed descriptors; otherwise, we are reading full speed + * descriptors. + */ + if (func->function.ss_descriptors) { + ep_desc_id = 2; + func->function.ss_descriptors[(long)valuep] = desc; + } else if (func->function.hs_descriptors) { + ep_desc_id = 1; func->function.hs_descriptors[(long)valuep] = desc; - else - func->function.descriptors[(long)valuep] = desc; + } else { + ep_desc_id = 0; + func->function.fs_descriptors[(long)valuep] = desc; + } if (!desc || desc->bDescriptorType != USB_DT_ENDPOINT) return 0; @@ -2052,13 +2176,13 @@ static int __ffs_func_bind_do_descs(enum ffs_entity_type type, u8 *valuep, idx = (ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) - 1; ffs_ep = func->eps + idx; - if (unlikely(ffs_ep->descs[isHS])) { - pr_vdebug("two %sspeed descriptors for EP %d\n", - isHS ? "high" : "full", + if (unlikely(ffs_ep->descs[ep_desc_id])) { + pr_err("two %sspeed descriptors for EP %d\n", + speed_names[ep_desc_id], ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); return -EINVAL; } - ffs_ep->descs[isHS] = ds; + ffs_ep->descs[ep_desc_id] = ds; ffs_dump_mem(": Original ep desc", ds, ds->bLength); if (ffs_ep->ep) { @@ -2144,8 +2268,57 @@ static int __ffs_func_bind_do_nums(enum ffs_entity_type type, u8 *valuep, return 0; } -static int ffs_func_bind(struct usb_configuration *c, - struct usb_function *f) +static inline struct f_fs_opts *ffs_do_functionfs_bind(struct usb_function *f, + struct usb_configuration *c) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct f_fs_opts *ffs_opts = + container_of(f->fi, struct f_fs_opts, func_inst); + int ret; + + ENTER(); + + /* + * Legacy gadget triggers binding in functionfs_ready_callback, + * which already uses locking; taking the same lock here would + * cause a deadlock. + * + * Configfs-enabled gadgets however do need ffs_dev_lock. + */ + if (!ffs_opts->no_configfs) + ffs_dev_lock(); + ret = ffs_opts->dev->desc_ready ? 0 : -ENODEV; + func->ffs = ffs_opts->dev->ffs_data; + if (!ffs_opts->no_configfs) + ffs_dev_unlock(); + if (ret) + return ERR_PTR(ret); + + func->conf = c; + func->gadget = c->cdev->gadget; + + ffs_data_get(func->ffs); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to ffs_opts->bound access + */ + if (!ffs_opts->refcnt) { + ret = functionfs_bind(func->ffs, c->cdev); + if (ret) + return ERR_PTR(ret); + } + ffs_opts->refcnt++; + func->function.strings = func->ffs->stringtabs; + + return ffs_opts; +} + +static int _ffs_func_bind(struct usb_configuration *c, + struct usb_function *f) { struct ffs_function *func = ffs_func_from_usb(f); struct ffs_data *ffs = func->ffs; @@ -2153,42 +2326,54 @@ static int ffs_func_bind(struct usb_configuration *c, const int full = !!func->ffs->fs_descs_count; const int high = gadget_is_dualspeed(func->gadget) && func->ffs->hs_descs_count; + const int super = gadget_is_superspeed(func->gadget) && + func->ffs->ss_descs_count; - int ret; + int fs_len, hs_len, ret; /* Make it a single chunk, less management later on */ - struct { - struct ffs_ep eps[ffs->eps_count]; - struct usb_descriptor_header - *fs_descs[full ? ffs->fs_descs_count + 1 : 0]; - struct usb_descriptor_header - *hs_descs[high ? ffs->hs_descs_count + 1 : 0]; - short inums[ffs->interfaces_count]; - char raw_descs[high ? ffs->raw_descs_length - : ffs->raw_fs_descs_length]; - } *data; + vla_group(d); + vla_item_with_sz(d, struct ffs_ep, eps, ffs->eps_count); + vla_item_with_sz(d, struct usb_descriptor_header *, fs_descs, + full ? ffs->fs_descs_count + 1 : 0); + vla_item_with_sz(d, struct usb_descriptor_header *, hs_descs, + high ? ffs->hs_descs_count + 1 : 0); + vla_item_with_sz(d, struct usb_descriptor_header *, ss_descs, + super ? ffs->ss_descs_count + 1 : 0); + vla_item_with_sz(d, short, inums, ffs->interfaces_count); + vla_item_with_sz(d, char, raw_descs, ffs->raw_descs_length); + char *vlabuf; ENTER(); - /* Only high speed but not supported by gadget? */ - if (unlikely(!(full | high))) + /* Has descriptors only for speeds gadget does not support */ + if (unlikely(!(full | high | super))) return -ENOTSUPP; - /* Allocate */ - data = kmalloc(sizeof *data, GFP_KERNEL); - if (unlikely(!data)) + /* Allocate a single chunk, less management later on */ + vlabuf = kmalloc(vla_group_size(d), GFP_KERNEL); + if (unlikely(!vlabuf)) return -ENOMEM; /* Zero */ - memset(data->eps, 0, sizeof data->eps); - memcpy(data->raw_descs, ffs->raw_descs + 16, sizeof data->raw_descs); - memset(data->inums, 0xff, sizeof data->inums); - for (ret = ffs->eps_count; ret; --ret) - data->eps[ret].num = -1; + memset(vla_ptr(vlabuf, d, eps), 0, d_eps__sz); + /* Copy descriptors */ + memcpy(vla_ptr(vlabuf, d, raw_descs), ffs->raw_descs, + ffs->raw_descs_length); - /* Save pointers */ - func->eps = data->eps; - func->interfaces_nums = data->inums; + memset(vla_ptr(vlabuf, d, inums), 0xff, d_inums__sz); + for (ret = ffs->eps_count; ret; --ret) { + struct ffs_ep *ptr; + + ptr = vla_ptr(vlabuf, d, eps); + ptr[ret].num = -1; + } + + /* Save pointers + * d_eps == vlabuf, func->eps used to kfree vlabuf later + */ + func->eps = vla_ptr(vlabuf, d, eps); + func->interfaces_nums = vla_ptr(vlabuf, d, inums); /* * Go through all the endpoint descriptors and allocate @@ -2196,23 +2381,41 @@ static int ffs_func_bind(struct usb_configuration *c, * numbers without worrying that it may be described later on. */ if (likely(full)) { - func->function.descriptors = data->fs_descs; - ret = ffs_do_descs(ffs->fs_descs_count, - data->raw_descs, - sizeof data->raw_descs, - __ffs_func_bind_do_descs, func); - if (unlikely(ret < 0)) + func->function.fs_descriptors = vla_ptr(vlabuf, d, fs_descs); + fs_len = ffs_do_descs(ffs->fs_descs_count, + vla_ptr(vlabuf, d, raw_descs), + d_raw_descs__sz, + __ffs_func_bind_do_descs, func); + if (unlikely(fs_len < 0)) { + ret = fs_len; goto error; + } } else { - ret = 0; + fs_len = 0; } if (likely(high)) { - func->function.hs_descriptors = data->hs_descs; - ret = ffs_do_descs(ffs->hs_descs_count, - data->raw_descs + ret, - (sizeof data->raw_descs) - ret, - __ffs_func_bind_do_descs, func); + func->function.hs_descriptors = vla_ptr(vlabuf, d, hs_descs); + hs_len = ffs_do_descs(ffs->hs_descs_count, + vla_ptr(vlabuf, d, raw_descs) + fs_len, + d_raw_descs__sz - fs_len, + __ffs_func_bind_do_descs, func); + if (unlikely(hs_len < 0)) { + ret = hs_len; + goto error; + } + } else { + hs_len = 0; + } + + if (likely(super)) { + func->function.ss_descriptors = vla_ptr(vlabuf, d, ss_descs); + ret = ffs_do_descs(ffs->ss_descs_count, + vla_ptr(vlabuf, d, raw_descs) + fs_len + hs_len, + d_raw_descs__sz - fs_len - hs_len, + __ffs_func_bind_do_descs, func); + if (unlikely(ret < 0)) + goto error; } /* @@ -2221,8 +2424,9 @@ static int ffs_func_bind(struct usb_configuration *c, * now. */ ret = ffs_do_descs(ffs->fs_descs_count + - (high ? ffs->hs_descs_count : 0), - data->raw_descs, sizeof data->raw_descs, + (high ? ffs->hs_descs_count : 0) + + (super ? ffs->ss_descs_count : 0), + vla_ptr(vlabuf, d, raw_descs), d_raw_descs__sz, __ffs_func_bind_do_nums, func); if (unlikely(ret < 0)) goto error; @@ -2236,26 +2440,19 @@ error: return ret; } - -/* Other USB function hooks *************************************************/ - -static void ffs_func_unbind(struct usb_configuration *c, - struct usb_function *f) +static int ffs_func_bind(struct usb_configuration *c, + struct usb_function *f) { - struct ffs_function *func = ffs_func_from_usb(f); - struct ffs_data *ffs = func->ffs; + struct f_fs_opts *ffs_opts = ffs_do_functionfs_bind(f, c); - ENTER(); + if (IS_ERR(ffs_opts)) + return PTR_ERR(ffs_opts); - if (ffs->func == func) { - ffs_func_eps_disable(func); - ffs->func = NULL; - } + return _ffs_func_bind(c, f); +} - ffs_event_add(ffs, FUNCTIONFS_UNBIND); - ffs_func_free(func); -} +/* Other USB function hooks *************************************************/ static int ffs_func_set_alt(struct usb_function *f, unsigned interface, unsigned alt) @@ -2383,6 +2580,413 @@ static int ffs_func_revmap_intf(struct ffs_function *func, u8 intf) } +/* Devices management *******************************************************/ + +static LIST_HEAD(ffs_devices); + +static struct ffs_dev *_ffs_do_find_dev(const char *name) +{ + struct ffs_dev *dev; + + list_for_each_entry(dev, &ffs_devices, entry) { + if (!dev->name || !name) + continue; + if (strcmp(dev->name, name) == 0) + return dev; + } + + return NULL; +} + +/* + * ffs_lock must be taken by the caller of this function + */ +static struct ffs_dev *_ffs_get_single_dev(void) +{ + struct ffs_dev *dev; + + if (list_is_singular(&ffs_devices)) { + dev = list_first_entry(&ffs_devices, struct ffs_dev, entry); + if (dev->single) + return dev; + } + + return NULL; +} + +/* + * ffs_lock must be taken by the caller of this function + */ +static struct ffs_dev *_ffs_find_dev(const char *name) +{ + struct ffs_dev *dev; + + dev = _ffs_get_single_dev(); + if (dev) + return dev; + + return _ffs_do_find_dev(name); +} + +/* Configfs support *********************************************************/ + +static inline struct f_fs_opts *to_ffs_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_fs_opts, + func_inst.group); +} + +static void ffs_attr_release(struct config_item *item) +{ + struct f_fs_opts *opts = to_ffs_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations ffs_item_ops = { + .release = ffs_attr_release, +}; + +static struct config_item_type ffs_func_type = { + .ct_item_ops = &ffs_item_ops, + .ct_owner = THIS_MODULE, +}; + + +/* Function registration interface ******************************************/ + +static void ffs_free_inst(struct usb_function_instance *f) +{ + struct f_fs_opts *opts; + + opts = to_f_fs_opts(f); + ffs_dev_lock(); + _ffs_free_dev(opts->dev); + ffs_dev_unlock(); + kfree(opts); +} + +#define MAX_INST_NAME_LEN 40 + +static int ffs_set_inst_name(struct usb_function_instance *fi, const char *name) +{ + struct f_fs_opts *opts; + char *ptr; + const char *tmp; + int name_len, ret; + + name_len = strlen(name) + 1; + if (name_len > MAX_INST_NAME_LEN) + return -ENAMETOOLONG; + + ptr = kstrndup(name, name_len, GFP_KERNEL); + if (!ptr) + return -ENOMEM; + + opts = to_f_fs_opts(fi); + tmp = NULL; + + ffs_dev_lock(); + + tmp = opts->dev->name_allocated ? opts->dev->name : NULL; + ret = _ffs_name_dev(opts->dev, ptr); + if (ret) { + kfree(ptr); + ffs_dev_unlock(); + return ret; + } + opts->dev->name_allocated = true; + + ffs_dev_unlock(); + + kfree(tmp); + + return 0; +} + +static struct usb_function_instance *ffs_alloc_inst(void) +{ + struct f_fs_opts *opts; + struct ffs_dev *dev; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + opts->func_inst.set_inst_name = ffs_set_inst_name; + opts->func_inst.free_func_inst = ffs_free_inst; + ffs_dev_lock(); + dev = _ffs_alloc_dev(); + ffs_dev_unlock(); + if (IS_ERR(dev)) { + kfree(opts); + return ERR_CAST(dev); + } + opts->dev = dev; + dev->opts = opts; + + config_group_init_type_name(&opts->func_inst.group, "", + &ffs_func_type); + return &opts->func_inst; +} + +static void ffs_free(struct usb_function *f) +{ + kfree(ffs_func_from_usb(f)); +} + +static void ffs_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + struct f_fs_opts *opts = + container_of(f->fi, struct f_fs_opts, func_inst); + struct ffs_ep *ep = func->eps; + unsigned count = ffs->eps_count; + unsigned long flags; + + ENTER(); + if (ffs->func == func) { + ffs_func_eps_disable(func); + ffs->func = NULL; + } + + if (!--opts->refcnt) + functionfs_unbind(ffs); + + /* cleanup after autoconfig */ + spin_lock_irqsave(&func->ffs->eps_lock, flags); + do { + if (ep->ep && ep->req) + usb_ep_free_request(ep->ep, ep->req); + ep->req = NULL; + ++ep; + } while (--count); + spin_unlock_irqrestore(&func->ffs->eps_lock, flags); + kfree(func->eps); + func->eps = NULL; + /* + * eps, descriptors and interfaces_nums are allocated in the + * same chunk so only one free is required. + */ + func->function.fs_descriptors = NULL; + func->function.hs_descriptors = NULL; + func->function.ss_descriptors = NULL; + func->interfaces_nums = NULL; + + ffs_event_add(ffs, FUNCTIONFS_UNBIND); +} + +static struct usb_function *ffs_alloc(struct usb_function_instance *fi) +{ + struct ffs_function *func; + + ENTER(); + + func = kzalloc(sizeof(*func), GFP_KERNEL); + if (unlikely(!func)) + return ERR_PTR(-ENOMEM); + + func->function.name = "Function FS Gadget"; + + func->function.bind = ffs_func_bind; + func->function.unbind = ffs_func_unbind; + func->function.set_alt = ffs_func_set_alt; + func->function.disable = ffs_func_disable; + func->function.setup = ffs_func_setup; + func->function.suspend = ffs_func_suspend; + func->function.resume = ffs_func_resume; + func->function.free_func = ffs_free; + + return &func->function; +} + +/* + * ffs_lock must be taken by the caller of this function + */ +static struct ffs_dev *_ffs_alloc_dev(void) +{ + struct ffs_dev *dev; + int ret; + + if (_ffs_get_single_dev()) + return ERR_PTR(-EBUSY); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return ERR_PTR(-ENOMEM); + + if (list_empty(&ffs_devices)) { + ret = functionfs_init(); + if (ret) { + kfree(dev); + return ERR_PTR(ret); + } + } + + list_add(&dev->entry, &ffs_devices); + + return dev; +} + +/* + * ffs_lock must be taken by the caller of this function + * The caller is responsible for "name" being available whenever f_fs needs it + */ +static int _ffs_name_dev(struct ffs_dev *dev, const char *name) +{ + struct ffs_dev *existing; + + existing = _ffs_do_find_dev(name); + if (existing) + return -EBUSY; + + dev->name = name; + + return 0; +} + +/* + * The caller is responsible for "name" being available whenever f_fs needs it + */ +int ffs_name_dev(struct ffs_dev *dev, const char *name) +{ + int ret; + + ffs_dev_lock(); + ret = _ffs_name_dev(dev, name); + ffs_dev_unlock(); + + return ret; +} +EXPORT_SYMBOL_GPL(ffs_name_dev); + +int ffs_single_dev(struct ffs_dev *dev) +{ + int ret; + + ret = 0; + ffs_dev_lock(); + + if (!list_is_singular(&ffs_devices)) + ret = -EBUSY; + else + dev->single = true; + + ffs_dev_unlock(); + return ret; +} +EXPORT_SYMBOL_GPL(ffs_single_dev); + +/* + * ffs_lock must be taken by the caller of this function + */ +static void _ffs_free_dev(struct ffs_dev *dev) +{ + list_del(&dev->entry); + if (dev->name_allocated) + kfree(dev->name); + kfree(dev); + if (list_empty(&ffs_devices)) + functionfs_cleanup(); +} + +static void *ffs_acquire_dev(const char *dev_name) +{ + struct ffs_dev *ffs_dev; + + ENTER(); + ffs_dev_lock(); + + ffs_dev = _ffs_find_dev(dev_name); + if (!ffs_dev) + ffs_dev = ERR_PTR(-ENODEV); + else if (ffs_dev->mounted) + ffs_dev = ERR_PTR(-EBUSY); + else if (ffs_dev->ffs_acquire_dev_callback && + ffs_dev->ffs_acquire_dev_callback(ffs_dev)) + ffs_dev = ERR_PTR(-ENODEV); + else + ffs_dev->mounted = true; + + ffs_dev_unlock(); + return ffs_dev; +} + +static void ffs_release_dev(struct ffs_data *ffs_data) +{ + struct ffs_dev *ffs_dev; + + ENTER(); + ffs_dev_lock(); + + ffs_dev = ffs_data->private_data; + if (ffs_dev) { + ffs_dev->mounted = false; + + if (ffs_dev->ffs_release_dev_callback) + ffs_dev->ffs_release_dev_callback(ffs_dev); + } + + ffs_dev_unlock(); +} + +static int ffs_ready(struct ffs_data *ffs) +{ + struct ffs_dev *ffs_obj; + int ret = 0; + + ENTER(); + ffs_dev_lock(); + + ffs_obj = ffs->private_data; + if (!ffs_obj) { + ret = -EINVAL; + goto done; + } + if (WARN_ON(ffs_obj->desc_ready)) { + ret = -EBUSY; + goto done; + } + + ffs_obj->desc_ready = true; + ffs_obj->ffs_data = ffs; + + if (ffs_obj->ffs_ready_callback) + ret = ffs_obj->ffs_ready_callback(ffs); + +done: + ffs_dev_unlock(); + return ret; +} + +static void ffs_closed(struct ffs_data *ffs) +{ + struct ffs_dev *ffs_obj; + + ENTER(); + ffs_dev_lock(); + + ffs_obj = ffs->private_data; + if (!ffs_obj) + goto done; + + ffs_obj->desc_ready = false; + + if (ffs_obj->ffs_closed_callback) + ffs_obj->ffs_closed_callback(ffs); + + if (!ffs_obj->opts || ffs_obj->opts->no_configfs + || !ffs_obj->opts->func_inst.group.cg_item.ci_parent) + goto done; + + unregister_gadget_item(ffs_obj->opts-> + func_inst.group.cg_item.ci_parent->ci_parent); +done: + ffs_dev_unlock(); +} + /* Misc helper functions ****************************************************/ static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock) @@ -2392,7 +2996,7 @@ static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock) : mutex_lock_interruptible(mutex); } -static char *ffs_prepare_buffer(const char * __user buf, size_t len) +static char *ffs_prepare_buffer(const char __user *buf, size_t len) { char *data; @@ -2413,3 +3017,7 @@ static char *ffs_prepare_buffer(const char * __user buf, size_t len) return data; } + +DECLARE_USB_FUNCTION_INIT(ffs, ffs_alloc_inst, ffs_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michal Nazarewicz"); diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c index b2113420b80..a95290a1289 100644 --- a/drivers/usb/gadget/f_hid.c +++ b/drivers/usb/gadget/f_hid.c @@ -10,7 +10,6 @@ */ #include <linux/kernel.h> -#include <linux/utsname.h> #include <linux/module.h> #include <linux/hid.h> #include <linux/cdev.h> @@ -18,14 +17,23 @@ #include <linux/poll.h> #include <linux/uaccess.h> #include <linux/wait.h> +#include <linux/sched.h> #include <linux/usb/g_hid.h> +#include "u_f.h" + static int major, minors; static struct class *hidg_class; /*-------------------------------------------------------------------------*/ /* HID gadget struct */ +struct f_hidg_req_list { + struct usb_request *req; + unsigned int pos; + struct list_head list; +}; + struct f_hidg { /* configuration */ unsigned char bInterfaceSubClass; @@ -35,10 +43,10 @@ struct f_hidg { unsigned short report_length; /* recv report */ - char *set_report_buff; - unsigned short set_report_length; + struct list_head completed_out_req; spinlock_t spinlock; wait_queue_head_t read_queue; + unsigned int qlen; /* send report */ struct mutex lock; @@ -49,7 +57,9 @@ struct f_hidg { int minor; struct cdev cdev; struct usb_function func; + struct usb_ep *in_ep; + struct usb_ep *out_ep; }; static inline struct f_hidg *func_to_hidg(struct usb_function *f) @@ -65,7 +75,7 @@ static struct usb_interface_descriptor hidg_interface_desc = { .bDescriptorType = USB_DT_INTERFACE, /* .bInterfaceNumber = DYNAMIC */ .bAlternateSetting = 0, - .bNumEndpoints = 1, + .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_HID, /* .bInterfaceSubClass = DYNAMIC */ /* .bInterfaceProtocol = DYNAMIC */ @@ -96,10 +106,23 @@ static struct usb_endpoint_descriptor hidg_hs_in_ep_desc = { */ }; +static struct usb_endpoint_descriptor hidg_hs_out_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + /*.wMaxPacketSize = DYNAMIC */ + .bInterval = 4, /* FIXME: Add this field in the + * HID gadget configuration? + * (struct hidg_func_descriptor) + */ +}; + static struct usb_descriptor_header *hidg_hs_descriptors[] = { (struct usb_descriptor_header *)&hidg_interface_desc, (struct usb_descriptor_header *)&hidg_desc, (struct usb_descriptor_header *)&hidg_hs_in_ep_desc, + (struct usb_descriptor_header *)&hidg_hs_out_ep_desc, NULL, }; @@ -117,10 +140,23 @@ static struct usb_endpoint_descriptor hidg_fs_in_ep_desc = { */ }; +static struct usb_endpoint_descriptor hidg_fs_out_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + /*.wMaxPacketSize = DYNAMIC */ + .bInterval = 10, /* FIXME: Add this field in the + * HID gadget configuration? + * (struct hidg_func_descriptor) + */ +}; + static struct usb_descriptor_header *hidg_fs_descriptors[] = { (struct usb_descriptor_header *)&hidg_interface_desc, (struct usb_descriptor_header *)&hidg_desc, (struct usb_descriptor_header *)&hidg_fs_in_ep_desc, + (struct usb_descriptor_header *)&hidg_fs_out_ep_desc, NULL, }; @@ -130,9 +166,11 @@ static struct usb_descriptor_header *hidg_fs_descriptors[] = { static ssize_t f_hidg_read(struct file *file, char __user *buffer, size_t count, loff_t *ptr) { - struct f_hidg *hidg = file->private_data; - char *tmp_buff = NULL; - unsigned long flags; + struct f_hidg *hidg = file->private_data; + struct f_hidg_req_list *list; + struct usb_request *req; + unsigned long flags; + int ret; if (!count) return 0; @@ -142,8 +180,9 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer, spin_lock_irqsave(&hidg->spinlock, flags); -#define READ_COND (hidg->set_report_buff != NULL) +#define READ_COND (!list_empty(&hidg->completed_out_req)) + /* wait for at least one buffer to complete */ while (!READ_COND) { spin_unlock_irqrestore(&hidg->spinlock, flags); if (file->f_flags & O_NONBLOCK) @@ -155,19 +194,34 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer, spin_lock_irqsave(&hidg->spinlock, flags); } - - count = min_t(unsigned, count, hidg->set_report_length); - tmp_buff = hidg->set_report_buff; - hidg->set_report_buff = NULL; - + /* pick the first one */ + list = list_first_entry(&hidg->completed_out_req, + struct f_hidg_req_list, list); + req = list->req; + count = min_t(unsigned int, count, req->actual - list->pos); spin_unlock_irqrestore(&hidg->spinlock, flags); - if (tmp_buff != NULL) { - /* copy to user outside spinlock */ - count -= copy_to_user(buffer, tmp_buff, count); - kfree(tmp_buff); - } else - count = -ENOMEM; + /* copy to user outside spinlock */ + count -= copy_to_user(buffer, req->buf + list->pos, count); + list->pos += count; + + /* + * if this request is completely handled and transfered to + * userspace, remove its entry from the list and requeue it + * again. Otherwise, we will revisit it again upon the next + * call, taking into account its current read position. + */ + if (list->pos == req->actual) { + spin_lock_irqsave(&hidg->spinlock, flags); + list_del(&list->list); + kfree(list); + spin_unlock_irqrestore(&hidg->spinlock, flags); + + req->length = hidg->report_length; + ret = usb_ep_queue(hidg->out_ep, req, GFP_KERNEL); + if (ret < 0) + return ret; + } return count; } @@ -282,28 +336,27 @@ static int f_hidg_open(struct inode *inode, struct file *fd) /*-------------------------------------------------------------------------*/ /* usb_function */ +static inline struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, + unsigned length) +{ + return alloc_ep_req(ep, length, length); +} + static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) { - struct f_hidg *hidg = (struct f_hidg *)req->context; + struct f_hidg *hidg = (struct f_hidg *) req->context; + struct f_hidg_req_list *req_list; + unsigned long flags; - if (req->status != 0 || req->buf == NULL || req->actual == 0) { - ERROR(hidg->func.config->cdev, "%s FAILED\n", __func__); + req_list = kzalloc(sizeof(*req_list), GFP_ATOMIC); + if (!req_list) return; - } - - spin_lock(&hidg->spinlock); - hidg->set_report_buff = krealloc(hidg->set_report_buff, - req->actual, GFP_ATOMIC); + req_list->req = req; - if (hidg->set_report_buff == NULL) { - spin_unlock(&hidg->spinlock); - return; - } - hidg->set_report_length = req->actual; - memcpy(hidg->set_report_buff, req->buf, req->actual); - - spin_unlock(&hidg->spinlock); + spin_lock_irqsave(&hidg->spinlock, flags); + list_add_tail(&req_list->list, &hidg->completed_out_req); + spin_unlock_irqrestore(&hidg->spinlock, flags); wake_up(&hidg->read_queue); } @@ -344,9 +397,7 @@ static int hidg_setup(struct usb_function *f, case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 | HID_REQ_SET_REPORT): VDBG(cdev, "set_report | wLenght=%d\n", ctrl->wLength); - req->context = hidg; - req->complete = hidg_set_report_complete; - goto respond; + goto stall; break; case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 @@ -374,7 +425,7 @@ static int hidg_setup(struct usb_function *f, break; default: - VDBG(cdev, "Unknown decriptor request 0x%x\n", + VDBG(cdev, "Unknown descriptor request 0x%x\n", value >> 8); goto stall; break; @@ -403,16 +454,25 @@ respond: static void hidg_disable(struct usb_function *f) { struct f_hidg *hidg = func_to_hidg(f); + struct f_hidg_req_list *list, *next; usb_ep_disable(hidg->in_ep); hidg->in_ep->driver_data = NULL; + + usb_ep_disable(hidg->out_ep); + hidg->out_ep->driver_data = NULL; + + list_for_each_entry_safe(list, next, &hidg->completed_out_req, list) { + list_del(&list->list); + kfree(list); + } } static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) { struct usb_composite_dev *cdev = f->config->cdev; struct f_hidg *hidg = func_to_hidg(f); - int status = 0; + int i, status = 0; VDBG(cdev, "hidg_set_alt intf:%d alt:%d\n", intf, alt); @@ -429,11 +489,55 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) } status = usb_ep_enable(hidg->in_ep); if (status < 0) { - ERROR(cdev, "Enable endpoint FAILED!\n"); + ERROR(cdev, "Enable IN endpoint FAILED!\n"); goto fail; } hidg->in_ep->driver_data = hidg; } + + + if (hidg->out_ep != NULL) { + /* restart endpoint */ + if (hidg->out_ep->driver_data != NULL) + usb_ep_disable(hidg->out_ep); + + status = config_ep_by_speed(f->config->cdev->gadget, f, + hidg->out_ep); + if (status) { + ERROR(cdev, "config_ep_by_speed FAILED!\n"); + goto fail; + } + status = usb_ep_enable(hidg->out_ep); + if (status < 0) { + ERROR(cdev, "Enable IN endpoint FAILED!\n"); + goto fail; + } + hidg->out_ep->driver_data = hidg; + + /* + * allocate a bunch of read buffers and queue them all at once. + */ + for (i = 0; i < hidg->qlen && status == 0; i++) { + struct usb_request *req = + hidg_alloc_ep_req(hidg->out_ep, + hidg->report_length); + if (req) { + req->complete = hidg_set_report_complete; + req->context = hidg; + status = usb_ep_queue(hidg->out_ep, req, + GFP_ATOMIC); + if (status) + ERROR(cdev, "%s queue req --> %d\n", + hidg->out_ep->name, status); + } else { + usb_ep_disable(hidg->out_ep); + hidg->out_ep->driver_data = NULL; + status = -ENOMEM; + goto fail; + } + } + } + fail: return status; } @@ -461,7 +565,6 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) goto fail; hidg_interface_desc.bInterfaceNumber = status; - /* allocate instance-specific endpoints */ status = -ENODEV; ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_in_ep_desc); @@ -470,13 +573,18 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) ep->driver_data = c->cdev; /* claim */ hidg->in_ep = ep; + ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_out_ep_desc); + if (!ep) + goto fail; + ep->driver_data = c->cdev; /* claim */ + hidg->out_ep = ep; + /* preallocate request and buffer */ status = -ENOMEM; hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL); if (!hidg->req) goto fail; - hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL); if (!hidg->req->buf) goto fail; @@ -486,29 +594,27 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol; hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + hidg_hs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + hidg_fs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); hidg_desc.desc[0].bDescriptorType = HID_DT_REPORT; hidg_desc.desc[0].wDescriptorLength = cpu_to_le16(hidg->report_desc_length); - hidg->set_report_buff = NULL; + hidg_hs_in_ep_desc.bEndpointAddress = + hidg_fs_in_ep_desc.bEndpointAddress; + hidg_hs_out_ep_desc.bEndpointAddress = + hidg_fs_out_ep_desc.bEndpointAddress; - /* copy descriptors */ - f->descriptors = usb_copy_descriptors(hidg_fs_descriptors); - if (!f->descriptors) + status = usb_assign_descriptors(f, hidg_fs_descriptors, + hidg_hs_descriptors, NULL); + if (status) goto fail; - if (gadget_is_dualspeed(c->cdev->gadget)) { - hidg_hs_in_ep_desc.bEndpointAddress = - hidg_fs_in_ep_desc.bEndpointAddress; - f->hs_descriptors = usb_copy_descriptors(hidg_hs_descriptors); - if (!f->hs_descriptors) - goto fail; - } - mutex_init(&hidg->lock); spin_lock_init(&hidg->spinlock); init_waitqueue_head(&hidg->write_queue); init_waitqueue_head(&hidg->read_queue); + INIT_LIST_HEAD(&hidg->completed_out_req); /* create char device */ cdev_init(&hidg->cdev, &f_hidg_fops); @@ -529,9 +635,7 @@ fail: usb_ep_free_request(hidg->in_ep, hidg->req); } - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - + usb_free_all_descriptors(f); return status; } @@ -548,12 +652,9 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) kfree(hidg->req->buf); usb_ep_free_request(hidg->in_ep, hidg->req); - /* free descriptors copies */ - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); + usb_free_all_descriptors(f); kfree(hidg->report_desc); - kfree(hidg->set_report_buff); kfree(hidg); } @@ -624,6 +725,9 @@ int __init hidg_bind_config(struct usb_configuration *c, hidg->func.disable = hidg_disable; hidg->func.setup = hidg_setup; + /* this could me made configurable at some point */ + hidg->qlen = 4; + status = usb_add_function(c, &hidg->func); if (status) kfree(hidg); diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c index 2c0cd824c66..4557cd03f0b 100644 --- a/drivers/usb/gadget/f_loopback.c +++ b/drivers/usb/gadget/f_loopback.c @@ -15,10 +15,12 @@ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/device.h> +#include <linux/module.h> +#include <linux/err.h> +#include <linux/usb/composite.h> #include "g_zero.h" -#include "gadget_chips.h" - +#include "u_f.h" /* * LOOPBACK FUNCTION ... a testing vehicle for USB peripherals, @@ -44,9 +46,8 @@ static inline struct f_loopback *func_to_loop(struct usb_function *f) return container_of(f, struct f_loopback, function); } -static unsigned qlen = 32; -module_param(qlen, uint, 0); -MODULE_PARM_DESC(qlenn, "depth of loopback queue"); +static unsigned qlen; +static unsigned buflen; /*-------------------------------------------------------------------------*/ @@ -119,7 +120,7 @@ static struct usb_endpoint_descriptor ss_loop_source_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_loop_source_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_loop_source_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, .bMaxBurst = 0, @@ -135,7 +136,7 @@ static struct usb_endpoint_descriptor ss_loop_sink_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_loop_sink_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_loop_sink_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, .bMaxBurst = 0, @@ -171,12 +172,12 @@ static struct usb_gadget_strings *loopback_strings[] = { /*-------------------------------------------------------------------------*/ -static int __init -loopback_bind(struct usb_configuration *c, struct usb_function *f) +static int loopback_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_loopback *loop = func_to_loop(f); int id; + int ret; /* allocate interface ID(s) */ id = usb_interface_id(c, f); @@ -184,6 +185,12 @@ loopback_bind(struct usb_configuration *c, struct usb_function *f) return id; loopback_intf.bInterfaceNumber = id; + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_loopback[0].id = id; + loopback_intf.iInterface = id; + /* allocate endpoints */ loop->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_loop_source_desc); @@ -201,22 +208,19 @@ autoconf_fail: loop->out_ep->driver_data = cdev; /* claim */ /* support high speed hardware */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - hs_loop_source_desc.bEndpointAddress = - fs_loop_source_desc.bEndpointAddress; - hs_loop_sink_desc.bEndpointAddress = - fs_loop_sink_desc.bEndpointAddress; - f->hs_descriptors = hs_loopback_descs; - } + hs_loop_source_desc.bEndpointAddress = + fs_loop_source_desc.bEndpointAddress; + hs_loop_sink_desc.bEndpointAddress = fs_loop_sink_desc.bEndpointAddress; /* support super speed hardware */ - if (gadget_is_superspeed(c->cdev->gadget)) { - ss_loop_source_desc.bEndpointAddress = - fs_loop_source_desc.bEndpointAddress; - ss_loop_sink_desc.bEndpointAddress = - fs_loop_sink_desc.bEndpointAddress; - f->ss_descriptors = ss_loopback_descs; - } + ss_loop_source_desc.bEndpointAddress = + fs_loop_source_desc.bEndpointAddress; + ss_loop_sink_desc.bEndpointAddress = fs_loop_sink_desc.bEndpointAddress; + + ret = usb_assign_descriptors(f, fs_loopback_descs, hs_loopback_descs, + ss_loopback_descs); + if (ret) + return ret; DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", (gadget_is_superspeed(c->cdev->gadget) ? "super" : @@ -225,9 +229,17 @@ autoconf_fail: return 0; } -static void -loopback_unbind(struct usb_configuration *c, struct usb_function *f) +static void lb_free_func(struct usb_function *f) { + struct f_lb_opts *opts; + + opts = container_of(f->fi, struct f_lb_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); + + usb_free_all_descriptors(f); kfree(func_to_loop(f)); } @@ -286,10 +298,15 @@ static void disable_loopback(struct f_loopback *loop) struct usb_composite_dev *cdev; cdev = loop->function.config->cdev; - disable_endpoints(cdev, loop->in_ep, loop->out_ep); + disable_endpoints(cdev, loop->in_ep, loop->out_ep, NULL, NULL); VDBG(cdev, "%s disabled\n", loop->function.name); } +static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len) +{ + return alloc_ep_req(ep, len, buflen); +} + static int enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop) { @@ -329,7 +346,7 @@ fail0: * than 'buflen' bytes each. */ for (i = 0; i < qlen && result == 0; i++) { - req = alloc_ep_req(ep); + req = lb_alloc_ep_req(ep, 0); if (req) { req->complete = loopback_complete; result = usb_ep_queue(ep, req, GFP_ATOMIC); @@ -367,64 +384,188 @@ static void loopback_disable(struct usb_function *f) disable_loopback(loop); } -/*-------------------------------------------------------------------------*/ - -static int __init loopback_bind_config(struct usb_configuration *c) +static struct usb_function *loopback_alloc(struct usb_function_instance *fi) { struct f_loopback *loop; - int status; + struct f_lb_opts *lb_opts; loop = kzalloc(sizeof *loop, GFP_KERNEL); if (!loop) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + lb_opts = container_of(fi, struct f_lb_opts, func_inst); + + mutex_lock(&lb_opts->lock); + lb_opts->refcnt++; + mutex_unlock(&lb_opts->lock); + + buflen = lb_opts->bulk_buflen; + qlen = lb_opts->qlen; + if (!qlen) + qlen = 32; loop->function.name = "loopback"; - loop->function.descriptors = fs_loopback_descs; loop->function.bind = loopback_bind; - loop->function.unbind = loopback_unbind; loop->function.set_alt = loopback_set_alt; loop->function.disable = loopback_disable; + loop->function.strings = loopback_strings; + + loop->function.free_func = lb_free_func; + + return &loop->function; +} + +static inline struct f_lb_opts *to_f_lb_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_lb_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_lb_opts); +CONFIGFS_ATTR_OPS(f_lb_opts); + +static void lb_attr_release(struct config_item *item) +{ + struct f_lb_opts *lb_opts = to_f_lb_opts(item); - status = usb_add_function(c, &loop->function); - if (status) - kfree(loop); - return status; + usb_put_function_instance(&lb_opts->func_inst); } -static struct usb_configuration loopback_driver = { - .label = "loopback", - .strings = loopback_strings, - .bConfigurationValue = 2, - .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - /* .iConfiguration = DYNAMIC */ +static struct configfs_item_operations lb_item_ops = { + .release = lb_attr_release, + .show_attribute = f_lb_opts_attr_show, + .store_attribute = f_lb_opts_attr_store, }; -/** - * loopback_add - add a loopback testing configuration to a device - * @cdev: the device to support the loopback configuration - */ -int __init loopback_add(struct usb_composite_dev *cdev, bool autoresume) +static ssize_t f_lb_opts_qlen_show(struct f_lb_opts *opts, char *page) { - int id; + int result; - /* allocate string ID(s) */ - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_loopback[0].id = id; + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->qlen); + mutex_unlock(&opts->lock); - loopback_intf.iInterface = id; - loopback_driver.iConfiguration = id; + return result; +} - /* support autoresume for remote wakeup testing */ - if (autoresume) - loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; +static ssize_t f_lb_opts_qlen_store(struct f_lb_opts *opts, + const char *page, size_t len) +{ + int ret; + u32 num; - /* support OTG systems */ - if (gadget_is_otg(cdev->gadget)) { - loopback_driver.descriptors = otg_desc; - loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; } - return usb_add_config(cdev, &loopback_driver, loopback_bind_config); + ret = kstrtou32(page, 0, &num); + if (ret) + goto end; + + opts->qlen = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_lb_opts_attribute f_lb_opts_qlen = + __CONFIGFS_ATTR(qlen, S_IRUGO | S_IWUSR, + f_lb_opts_qlen_show, + f_lb_opts_qlen_store); + +static ssize_t f_lb_opts_bulk_buflen_show(struct f_lb_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->bulk_buflen); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_lb_opts_bulk_buflen_store(struct f_lb_opts *opts, + const char *page, size_t len) +{ + int ret; + u32 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou32(page, 0, &num); + if (ret) + goto end; + + opts->bulk_buflen = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_lb_opts_attribute f_lb_opts_bulk_buflen = + __CONFIGFS_ATTR(buflen, S_IRUGO | S_IWUSR, + f_lb_opts_bulk_buflen_show, + f_lb_opts_bulk_buflen_store); + +static struct configfs_attribute *lb_attrs[] = { + &f_lb_opts_qlen.attr, + &f_lb_opts_bulk_buflen.attr, + NULL, +}; + +static struct config_item_type lb_func_type = { + .ct_item_ops = &lb_item_ops, + .ct_attrs = lb_attrs, + .ct_owner = THIS_MODULE, +}; + +static void lb_free_instance(struct usb_function_instance *fi) +{ + struct f_lb_opts *lb_opts; + + lb_opts = container_of(fi, struct f_lb_opts, func_inst); + kfree(lb_opts); } + +static struct usb_function_instance *loopback_alloc_instance(void) +{ + struct f_lb_opts *lb_opts; + + lb_opts = kzalloc(sizeof(*lb_opts), GFP_KERNEL); + if (!lb_opts) + return ERR_PTR(-ENOMEM); + mutex_init(&lb_opts->lock); + lb_opts->func_inst.free_func_inst = lb_free_instance; + lb_opts->bulk_buflen = GZERO_BULK_BUFLEN; + lb_opts->qlen = GZERO_QLEN; + + config_group_init_type_name(&lb_opts->func_inst.group, "", + &lb_func_type); + + return &lb_opts->func_inst; +} +DECLARE_USB_FUNCTION(Loopback, loopback_alloc_instance, loopback_alloc); + +int __init lb_modinit(void) +{ + int ret; + + ret = usb_function_register(&Loopbackusb_func); + if (ret) + return ret; + return ret; +} +void __exit lb_modexit(void) +{ + usb_function_unregister(&Loopbackusb_func); +} + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index ee8ceec0156..b9639390886 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -3,7 +3,7 @@ * * Copyright (C) 2003-2008 Alan Stern * Copyright (C) 2009 Samsung Electronics - * Author: Michal Nazarewicz <m.nazarewicz@samsung.com> + * Author: Michal Nazarewicz <mina86@mina86.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -44,12 +44,12 @@ * function for a USB device, it also illustrates a technique of * double-buffering for increased throughput. * - * Function supports multiple logical units (LUNs). Backing storage - * for each LUN is provided by a regular file or a block device. - * Access for each LUN can be limited to read-only. Moreover, the - * function can indicate that LUN is removable and/or CD-ROM. (The - * later implies read-only access.) - * + * For more information about MSF and in particular its module + * parameters and sysfs interface read the + * <Documentation/usb/mass-storage.txt> file. + */ + +/* * MSF is configured by specifying a fsg_config structure. It has the * following fields: * @@ -75,25 +75,6 @@ * ->nofua Flag specifying that FUA flag in SCSI WRITE(10,12) * commands for this LUN shall be ignored. * - * lun_name_format A printf-like format for names of the LUN - * devices. This determines how the - * directory in sysfs will be named. - * Unless you are using several MSFs in - * a single gadget (as opposed to single - * MSF in many configurations) you may - * leave it as NULL (in which case - * "lun%d" will be used). In the format - * you can use "%d" to index LUNs for - * MSF's with more than one LUN. (Beware - * that there is only one integer given - * as an argument for the format and - * specifying invalid format may cause - * unspecified behaviour.) - * thread_name Name of the kernel thread process used by the - * MSF. You can safely set it to NULL - * (in which case default "file-storage" - * will be used). - * * vendor_name * product_name * release Information used as a reply to INQUIRY @@ -114,62 +95,6 @@ * data track and no audio tracks; hence there need be only one * backing file per LUN. * - * - * MSF includes support for module parameters. If gadget using it - * decides to use it, the following module parameters will be - * available: - * - * file=filename[,filename...] - * Names of the files or block devices used for - * backing storage. - * ro=b[,b...] Default false, boolean for read-only access. - * removable=b[,b...] - * Default true, boolean for removable media. - * cdrom=b[,b...] Default false, boolean for whether to emulate - * a CD-ROM drive. - * nofua=b[,b...] Default false, booleans for ignore FUA flag - * in SCSI WRITE(10,12) commands - * luns=N Default N = number of filenames, number of - * LUNs to support. - * stall Default determined according to the type of - * USB device controller (usually true), - * boolean to permit the driver to halt - * bulk endpoints. - * - * The module parameters may be prefixed with some string. You need - * to consult gadget's documentation or source to verify whether it is - * using those module parameters and if it does what are the prefixes - * (look for FSG_MODULE_PARAMETERS() macro usage, what's inside it is - * the prefix). - * - * - * Requirements are modest; only a bulk-in and a bulk-out endpoint are - * needed. The memory requirement amounts to two 16K buffers, size - * configurable by a parameter. Support is included for both - * full-speed and high-speed operation. - * - * Note that the driver is slightly non-portable in that it assumes a - * single memory/DMA buffer will be useable for bulk-in, bulk-out, and - * interrupt-in endpoints. With most device controllers this isn't an - * issue, but there may be some with hardware restrictions that prevent - * a buffer from being used by more than one endpoint. - * - * - * The pathnames of the backing files and the ro settings are - * available in the attribute files "file" and "ro" in the lun<n> (or - * to be more precise in a directory which name comes from - * "lun_name_format" option!) subdirectory of the gadget's sysfs - * directory. If the "removable" option is set, writing to these - * files will simulate ejecting/loading the medium (writing an empty - * line means eject) and adjusting a write-enable tab. Changes to the - * ro setting are not allowed when the medium is loaded or if CD-ROM - * emulation is being used. - * - * When a LUN receive an "eject" SCSI request (Start/Stop Unit), - * if the LUN is removable, the backing file is released to simulate - * ejection. - * - * * This function is heavily based on "File-backed Storage Gadget" by * Alan Stern which in turn is heavily based on "Gadget Zero" by David * Brownell. The driver's SCSI command interface was based on the @@ -211,7 +136,7 @@ * In normal operation the main thread is started during the gadget's * fsg_bind() callback and stopped during fsg_unbind(). But it can * also exit when it receives a signal, and there's no point leaving - * the gadget running when the thread is dead. At of this moment, MSF + * the gadget running when the thread is dead. As of this moment, MSF * provides no way to deregister the gadget when thread dies -- maybe * a callback functions is needed. * @@ -288,13 +213,14 @@ #include <linux/spinlock.h> #include <linux/string.h> #include <linux/freezer.h> -#include <linux/utsname.h> +#include <linux/module.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/composite.h> #include "gadget_chips.h" +#include "configfs.h" /*------------------------------------------------------------------------*/ @@ -304,45 +230,30 @@ static const char fsg_string_interface[] = "Mass Storage"; -#define FSG_NO_INTR_EP 1 -#define FSG_NO_DEVICE_STRINGS 1 -#define FSG_NO_OTG 1 -#define FSG_NO_INTR_EP 1 +#include "storage_common.h" +#include "f_mass_storage.h" -#include "storage_common.c" +/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */ +static struct usb_string fsg_strings[] = { + {FSG_STRING_INTERFACE, fsg_string_interface}, + {} +}; + +static struct usb_gadget_strings fsg_stringtab = { + .language = 0x0409, /* en-us */ + .strings = fsg_strings, +}; +static struct usb_gadget_strings *fsg_strings_array[] = { + &fsg_stringtab, + NULL, +}; /*-------------------------------------------------------------------------*/ struct fsg_dev; struct fsg_common; -/* FSF callback functions */ -struct fsg_operations { - /* - * Callback function to call when thread exits. If no - * callback is set or it returns value lower then zero MSF - * will force eject all LUNs it operates on (including those - * marked as non-removable or with prevent_medium_removal flag - * set). - */ - int (*thread_exits)(struct fsg_common *common); - - /* - * Called prior to ejection. Negative return means error, - * zero means to continue with ejection, positive means not to - * eject. - */ - int (*pre_eject)(struct fsg_common *common, - struct fsg_lun *lun, int num); - /* - * Called after ejection. Negative return means error, zero - * or positive is just a success. - */ - int (*post_eject)(struct fsg_common *common, - struct fsg_lun *lun, int num); -}; - /* Data shared by all the FSG instances. */ struct fsg_common { struct usb_gadget *gadget; @@ -363,13 +274,14 @@ struct fsg_common { struct fsg_buffhd *next_buffhd_to_fill; struct fsg_buffhd *next_buffhd_to_drain; struct fsg_buffhd *buffhds; + unsigned int fsg_num_buffers; int cmnd_size; u8 cmnd[MAX_COMMAND_SIZE]; unsigned int nluns; unsigned int lun; - struct fsg_lun *luns; + struct fsg_lun **luns; struct fsg_lun *curlun; unsigned int bulk_out_maxpacket; @@ -389,6 +301,7 @@ struct fsg_common { unsigned int short_packet_received:1; unsigned int bad_lun_okay:1; unsigned int running:1; + unsigned int sysfs:1; int thread_wakeup_needed; struct completion thread_notifier; @@ -408,31 +321,6 @@ struct fsg_common { struct kref ref; }; -struct fsg_config { - unsigned nluns; - struct fsg_lun_config { - const char *filename; - char ro; - char removable; - char cdrom; - char nofua; - } luns[FSG_MAX_LUNS]; - - const char *lun_name_format; - const char *thread_name; - - /* Callback functions. */ - const struct fsg_operations *ops; - /* Gadget's private data. */ - void *private_data; - - const char *vendor_name; /* 8 characters or less */ - const char *product_name; /* 16 characters or less */ - u16 release; - - char can_stall; -}; - struct fsg_dev { struct usb_function function; struct usb_gadget *gadget; /* Copy of cdev->gadget */ @@ -512,6 +400,7 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) /* Caller must hold fsg->lock */ static void wakeup_thread(struct fsg_common *common) { + smp_wmb(); /* ensure the write of bh->state is complete */ /* Tell the main thread that something has happened */ common->thread_wakeup_needed = 1; if (common->thread_task) @@ -620,7 +509,7 @@ static int fsg_setup(struct usb_function *f, switch (ctrl->bRequest) { - case USB_BULK_RESET_REQUEST: + case US_BULK_RESET_REQUEST: if (ctrl->bRequestType != (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE)) break; @@ -634,9 +523,9 @@ static int fsg_setup(struct usb_function *f, */ DBG(fsg, "bulk reset request\n"); raise_exception(fsg->common, FSG_STATE_RESET); - return DELAYED_STATUS; + return USB_GADGET_DELAYED_STATUS; - case USB_BULK_GET_MAX_LUN_REQUEST: + case US_BULK_GET_MAX_LUN: if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE)) break; @@ -713,13 +602,14 @@ static bool start_out_transfer(struct fsg_common *common, struct fsg_buffhd *bh) return true; } -static int sleep_thread(struct fsg_common *common) +static int sleep_thread(struct fsg_common *common, bool can_freeze) { int rc = 0; /* Wait until a signal arrives or we are woken up */ for (;;) { - try_to_freeze(); + if (can_freeze) + try_to_freeze(); set_current_state(TASK_INTERRUPTIBLE); if (signal_pending(current)) { rc = -EINTR; @@ -731,6 +621,7 @@ static int sleep_thread(struct fsg_common *common) } __set_current_state(TASK_RUNNING); common->thread_wakeup_needed = 0; + smp_rmb(); /* ensure the latest bh->state is visible */ return rc; } @@ -792,7 +683,7 @@ static int do_read(struct fsg_common *common) /* Wait for the next buffer to become available */ bh = common->next_buffhd_to_fill; while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common); + rc = sleep_thread(common, false); if (rc) return rc; } @@ -1047,7 +938,7 @@ static int do_write(struct fsg_common *common) } /* Wait for something to happen */ - rc = sleep_thread(common); + rc = sleep_thread(common, false); if (rc) return rc; } @@ -1077,7 +968,7 @@ static int do_synchronize_cache(struct fsg_common *common) static void invalidate_sub(struct fsg_lun *curlun) { struct file *filp = curlun->filp; - struct inode *inode = filp->f_path.dentry->d_inode; + struct inode *inode = file_inode(filp); unsigned long rc; rc = invalidate_mapping_pages(inode->i_mapping, 0, -1); @@ -1459,26 +1350,13 @@ static int do_start_stop(struct fsg_common *common) if (!loej) return 0; - /* Simulate an unload/eject */ - if (common->ops && common->ops->pre_eject) { - int r = common->ops->pre_eject(common, curlun, - curlun - common->luns); - if (unlikely(r < 0)) - return r; - else if (r) - return 0; - } - up_read(&common->filesem); down_write(&common->filesem); fsg_lun_close(curlun); up_write(&common->filesem); down_read(&common->filesem); - return common->ops && common->ops->post_eject - ? min(0, common->ops->post_eject(common, curlun, - curlun - common->luns)) - : 0; + return 0; } static int do_prevent_allow(struct fsg_common *common) @@ -1627,7 +1505,7 @@ static int throw_away_data(struct fsg_common *common) } /* Otherwise wait for something to happen */ - rc = sleep_thread(common); + rc = sleep_thread(common, true); if (rc) return rc; } @@ -1742,13 +1620,13 @@ static int send_status(struct fsg_common *common) struct fsg_buffhd *bh; struct bulk_cs_wrap *csw; int rc; - u8 status = USB_STATUS_PASS; + u8 status = US_BULK_STAT_OK; u32 sd, sdinfo = 0; /* Wait for the next buffer to become available */ bh = common->next_buffhd_to_fill; while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common); + rc = sleep_thread(common, true); if (rc) return rc; } @@ -1763,11 +1641,11 @@ static int send_status(struct fsg_common *common) if (common->phase_error) { DBG(common, "sending phase-error status\n"); - status = USB_STATUS_PHASE_ERROR; + status = US_BULK_STAT_PHASE; sd = SS_INVALID_COMMAND; } else if (sd != SS_NO_SENSE) { DBG(common, "sending command-failure status\n"); - status = USB_STATUS_FAIL; + status = US_BULK_STAT_FAIL; VDBG(common, " sense data: SK x%02x, ASC x%02x, ASCQ x%02x;" " info x%x\n", SK(sd), ASC(sd), ASCQ(sd), sdinfo); @@ -1776,12 +1654,12 @@ static int send_status(struct fsg_common *common) /* Store and send the Bulk-only CSW */ csw = (void *)bh->buf; - csw->Signature = cpu_to_le32(USB_BULK_CS_SIG); + csw->Signature = cpu_to_le32(US_BULK_CS_SIGN); csw->Tag = common->tag; csw->Residue = cpu_to_le32(common->residue); csw->Status = status; - bh->inreq->length = USB_BULK_CS_WRAP_LEN; + bh->inreq->length = US_BULK_CS_WRAP_LEN; bh->inreq->zero = 0; if (!start_in_transfer(common, bh)) /* Don't know what to do if common->fsg is NULL */ @@ -1803,7 +1681,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, int needs_medium, const char *name) { int i; - int lun = common->cmnd[1] >> 5; + unsigned int lun = common->cmnd[1] >> 5; static const char dirletter[4] = {'u', 'o', 'i', 'n'}; char hdlen[20]; struct fsg_lun *curlun; @@ -1869,7 +1747,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, /* Check that the LUN values are consistent */ if (common->lun != lun) - DBG(common, "using LUN %d from CBW, not LUN %d from CDB\n", + DBG(common, "using LUN %u from CBW, not LUN %u from CDB\n", common->lun, lun); /* Check the LUN */ @@ -1889,7 +1767,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, */ if (common->cmnd[0] != INQUIRY && common->cmnd[0] != REQUEST_SENSE) { - DBG(common, "unsupported LUN %d\n", common->lun); + DBG(common, "unsupported LUN %u\n", common->lun); return -EINVAL; } } @@ -1951,7 +1829,7 @@ static int do_scsi_command(struct fsg_common *common) bh = common->next_buffhd_to_fill; common->next_buffhd_to_drain = bh; while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common); + rc = sleep_thread(common, true); if (rc) return rc; } @@ -2190,7 +2068,7 @@ unknown_cmnd: common->data_size_from_cmnd = 0; sprintf(unknown, "Unknown x%02x", common->cmnd[0]); reply = check_command(common, common->cmnd_size, - DATA_DIR_UNKNOWN, 0xff, 0, unknown); + DATA_DIR_UNKNOWN, ~0, 0, unknown); if (reply == 0) { common->curlun->sense_data = SS_INVALID_COMMAND; reply = -EINVAL; @@ -2221,7 +2099,7 @@ unknown_cmnd: static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) { struct usb_request *req = bh->outreq; - struct fsg_bulk_cb_wrap *cbw = req->buf; + struct bulk_cb_wrap *cbw = req->buf; struct fsg_common *common = fsg->common; /* Was this a real packet? Should it be ignored? */ @@ -2229,9 +2107,9 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) return -EINVAL; /* Is the CBW valid? */ - if (req->actual != USB_BULK_CB_WRAP_LEN || + if (req->actual != US_BULK_CB_WRAP_LEN || cbw->Signature != cpu_to_le32( - USB_BULK_CB_SIG)) { + US_BULK_CB_SIGN)) { DBG(fsg, "invalid CBW: len %u sig 0x%x\n", req->actual, le32_to_cpu(cbw->Signature)); @@ -2253,7 +2131,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) } /* Is the CBW meaningful? */ - if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG || + if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN || cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) { DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, " "cmdlen %u\n", @@ -2273,7 +2151,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) /* Save the command for later */ common->cmnd_size = cbw->Length; memcpy(common->cmnd, cbw->CDB, common->cmnd_size); - if (cbw->Flags & USB_BULK_IN_FLAG) + if (cbw->Flags & US_BULK_FLAG_IN) common->data_dir = DATA_DIR_TO_HOST; else common->data_dir = DATA_DIR_FROM_HOST; @@ -2281,8 +2159,8 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) if (common->data_size == 0) common->data_dir = DATA_DIR_NONE; common->lun = cbw->Lun; - if (common->lun >= 0 && common->lun < common->nluns) - common->curlun = &common->luns[common->lun]; + if (common->lun < common->nluns) + common->curlun = common->luns[common->lun]; else common->curlun = NULL; common->tag = cbw->Tag; @@ -2297,13 +2175,13 @@ static int get_next_command(struct fsg_common *common) /* Wait for the next buffer to become available */ bh = common->next_buffhd_to_fill; while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(common); + rc = sleep_thread(common, true); if (rc) return rc; } /* Queue a request to read a Bulk-only CBW */ - set_bulk_out_req_length(common, bh, USB_BULK_CB_WRAP_LEN); + set_bulk_out_req_length(common, bh, US_BULK_CB_WRAP_LEN); if (!start_out_transfer(common, bh)) /* Don't know what to do if common->fsg is NULL */ return -EIO; @@ -2316,7 +2194,7 @@ static int get_next_command(struct fsg_common *common) /* Wait for the CBW to arrive */ while (bh->state != BUF_STATE_FULL) { - rc = sleep_thread(common); + rc = sleep_thread(common, true); if (rc) return rc; } @@ -2354,7 +2232,7 @@ reset: if (common->fsg) { fsg = common->fsg; - for (i = 0; i < fsg_num_buffers; ++i) { + for (i = 0; i < common->fsg_num_buffers; ++i) { struct fsg_buffhd *bh = &common->buffhds[i]; if (bh->inreq) { @@ -2370,10 +2248,12 @@ reset: /* Disable the endpoints */ if (fsg->bulk_in_enabled) { usb_ep_disable(fsg->bulk_in); + fsg->bulk_in->driver_data = NULL; fsg->bulk_in_enabled = 0; } if (fsg->bulk_out_enabled) { usb_ep_disable(fsg->bulk_out); + fsg->bulk_out->driver_data = NULL; fsg->bulk_out_enabled = 0; } @@ -2411,7 +2291,7 @@ reset: clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); /* Allocate the requests */ - for (i = 0; i < fsg_num_buffers; ++i) { + for (i = 0; i < common->fsg_num_buffers; ++i) { struct fsg_buffhd *bh = &common->buffhds[i]; rc = alloc_request(common, fsg->bulk_in, &bh->inreq); @@ -2428,7 +2308,9 @@ reset: common->running = 1; for (i = 0; i < common->nluns; ++i) - common->luns[i].unit_attention_data = SS_RESET_OCCURRED; + if (common->luns[i]) + common->luns[i]->unit_attention_data = + SS_RESET_OCCURRED; return rc; } @@ -2480,7 +2362,7 @@ static void handle_exception(struct fsg_common *common) /* Cancel all the pending transfers */ if (likely(common->fsg)) { - for (i = 0; i < fsg_num_buffers; ++i) { + for (i = 0; i < common->fsg_num_buffers; ++i) { bh = &common->buffhds[i]; if (bh->inreq_busy) usb_ep_dequeue(common->fsg->bulk_in, bh->inreq); @@ -2492,13 +2374,13 @@ static void handle_exception(struct fsg_common *common) /* Wait until everything is idle */ for (;;) { int num_active = 0; - for (i = 0; i < fsg_num_buffers; ++i) { + for (i = 0; i < common->fsg_num_buffers; ++i) { bh = &common->buffhds[i]; num_active += bh->inreq_busy + bh->outreq_busy; } if (num_active == 0) break; - if (sleep_thread(common)) + if (sleep_thread(common, true)) return; } @@ -2515,7 +2397,7 @@ static void handle_exception(struct fsg_common *common) */ spin_lock_irq(&common->lock); - for (i = 0; i < fsg_num_buffers; ++i) { + for (i = 0; i < common->fsg_num_buffers; ++i) { bh = &common->buffhds[i]; bh->state = BUF_STATE_EMPTY; } @@ -2528,7 +2410,9 @@ static void handle_exception(struct fsg_common *common) common->state = FSG_STATE_STATUS_PHASE; else { for (i = 0; i < common->nluns; ++i) { - curlun = &common->luns[i]; + curlun = common->luns[i]; + if (!curlun) + continue; curlun->prevent_medium_removal = 0; curlun->sense_data = SS_NO_SENSE; curlun->unit_attention_data = SS_NO_SENSE; @@ -2570,8 +2454,9 @@ static void handle_exception(struct fsg_common *common) * CONFIG_CHANGE cases. */ /* for (i = 0; i < common->nluns; ++i) */ - /* common->luns[i].unit_attention_data = */ - /* SS_RESET_OCCURRED; */ + /* if (common->luns[i]) */ + /* common->luns[i]->unit_attention_data = */ + /* SS_RESET_OCCURRED; */ break; case FSG_STATE_CONFIG_CHANGE: @@ -2632,7 +2517,7 @@ static int fsg_main_thread(void *common_) } if (!common->running) { - sleep_thread(common); + sleep_thread(common, true); continue; } @@ -2667,12 +2552,13 @@ static int fsg_main_thread(void *common_) if (!common->ops || !common->ops->thread_exits || common->ops->thread_exits(common) < 0) { - struct fsg_lun *curlun = common->luns; + struct fsg_lun **curlun_it = common->luns; unsigned i = common->nluns; down_write(&common->filesem); - for (; i--; ++curlun) { - if (!fsg_lun_is_open(curlun)) + for (; i--; ++curlun_it) { + struct fsg_lun *curlun = *curlun_it; + if (!curlun || !fsg_lun_is_open(curlun)) continue; fsg_lun_close(curlun); @@ -2688,10 +2574,62 @@ static int fsg_main_thread(void *common_) /*************************** DEVICE ATTRIBUTES ***************************/ -/* Write permission is checked per LUN in store_*() functions. */ -static DEVICE_ATTR(ro, 0644, fsg_show_ro, fsg_store_ro); -static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, fsg_store_nofua); -static DEVICE_ATTR(file, 0644, fsg_show_file, fsg_store_file); +static ssize_t ro_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + + return fsg_show_ro(curlun, buf); +} + +static ssize_t nofua_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + + return fsg_show_nofua(curlun, buf); +} + +static ssize_t file_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + + return fsg_show_file(curlun, filesem, buf); +} + +static ssize_t ro_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + + return fsg_store_ro(curlun, filesem, buf, count); +} + +static ssize_t nofua_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + + return fsg_store_nofua(curlun, buf, count); +} + +static ssize_t file_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + + return fsg_store_file(curlun, filesem, buf, count); +} + +static DEVICE_ATTR_RW(ro); +static DEVICE_ATTR_RW(nofua); +static DEVICE_ATTR_RW(file); + +static struct device_attribute dev_attr_ro_cdrom = __ATTR_RO(ro); +static struct device_attribute dev_attr_file_nonremovable = __ATTR_RO(file); /****************************** FSG COMMON ******************************/ @@ -2703,231 +2641,422 @@ static void fsg_lun_release(struct device *dev) /* Nothing needs to be done */ } -static inline void fsg_common_get(struct fsg_common *common) +void fsg_common_get(struct fsg_common *common) { kref_get(&common->ref); } +EXPORT_SYMBOL_GPL(fsg_common_get); -static inline void fsg_common_put(struct fsg_common *common) +void fsg_common_put(struct fsg_common *common) { kref_put(&common->ref, fsg_common_release); } +EXPORT_SYMBOL_GPL(fsg_common_put); -static struct fsg_common *fsg_common_init(struct fsg_common *common, - struct usb_composite_dev *cdev, - struct fsg_config *cfg) +/* check if fsg_num_buffers is within a valid range */ +static inline int fsg_num_buffers_validate(unsigned int fsg_num_buffers) { - struct usb_gadget *gadget = cdev->gadget; - struct fsg_buffhd *bh; - struct fsg_lun *curlun; - struct fsg_lun_config *lcfg; - int nluns, i, rc; - char *pathbuf; - - rc = fsg_num_buffers_validate(); - if (rc != 0) - return ERR_PTR(rc); - - /* Find out how many LUNs there should be */ - nluns = cfg->nluns; - if (nluns < 1 || nluns > FSG_MAX_LUNS) { - dev_err(&gadget->dev, "invalid number of LUNs: %u\n", nluns); - return ERR_PTR(-EINVAL); - } + if (fsg_num_buffers >= 2 && fsg_num_buffers <= 4) + return 0; + pr_err("fsg_num_buffers %u is out of range (%d to %d)\n", + fsg_num_buffers, 2, 4); + return -EINVAL; +} - /* Allocate? */ +static struct fsg_common *fsg_common_setup(struct fsg_common *common) +{ if (!common) { - common = kzalloc(sizeof *common, GFP_KERNEL); + common = kzalloc(sizeof(*common), GFP_KERNEL); if (!common) return ERR_PTR(-ENOMEM); common->free_storage_on_release = 1; } else { - memset(common, 0, sizeof *common); common->free_storage_on_release = 0; } + init_rwsem(&common->filesem); + spin_lock_init(&common->lock); + kref_init(&common->ref); + init_completion(&common->thread_notifier); + init_waitqueue_head(&common->fsg_wait); + common->state = FSG_STATE_TERMINATED; - common->buffhds = kcalloc(fsg_num_buffers, - sizeof *(common->buffhds), GFP_KERNEL); - if (!common->buffhds) { - if (common->free_storage_on_release) - kfree(common); - return ERR_PTR(-ENOMEM); - } - - common->ops = cfg->ops; - common->private_data = cfg->private_data; - - common->gadget = gadget; - common->ep0 = gadget->ep0; - common->ep0req = cdev->req; - common->cdev = cdev; + return common; +} - /* Maybe allocate device-global string IDs, and patch descriptors */ - if (fsg_strings[FSG_STRING_INTERFACE].id == 0) { - rc = usb_string_id(cdev); - if (unlikely(rc < 0)) - goto error_release; - fsg_strings[FSG_STRING_INTERFACE].id = rc; - fsg_intf_desc.iInterface = rc; - } +void fsg_common_set_sysfs(struct fsg_common *common, bool sysfs) +{ + common->sysfs = sysfs; +} +EXPORT_SYMBOL_GPL(fsg_common_set_sysfs); - /* - * Create the LUNs, open their backing files, and register the - * LUN devices in sysfs. - */ - curlun = kcalloc(nluns, sizeof(*curlun), GFP_KERNEL); - if (unlikely(!curlun)) { - rc = -ENOMEM; - goto error_release; +static void _fsg_common_free_buffers(struct fsg_buffhd *buffhds, unsigned n) +{ + if (buffhds) { + struct fsg_buffhd *bh = buffhds; + while (n--) { + kfree(bh->buf); + ++bh; + } + kfree(buffhds); } - common->luns = curlun; - - init_rwsem(&common->filesem); +} - for (i = 0, lcfg = cfg->luns; i < nluns; ++i, ++curlun, ++lcfg) { - curlun->cdrom = !!lcfg->cdrom; - curlun->ro = lcfg->cdrom || lcfg->ro; - curlun->initially_ro = curlun->ro; - curlun->removable = lcfg->removable; - curlun->dev.release = fsg_lun_release; - curlun->dev.parent = &gadget->dev; - /* curlun->dev.driver = &fsg_driver.driver; XXX */ - dev_set_drvdata(&curlun->dev, &common->filesem); - dev_set_name(&curlun->dev, - cfg->lun_name_format - ? cfg->lun_name_format - : "lun%d", - i); - - rc = device_register(&curlun->dev); - if (rc) { - INFO(common, "failed to register LUN%d: %d\n", i, rc); - common->nluns = i; - put_device(&curlun->dev); - goto error_release; - } +int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n) +{ + struct fsg_buffhd *bh, *buffhds; + int i, rc; - rc = device_create_file(&curlun->dev, &dev_attr_ro); - if (rc) - goto error_luns; - rc = device_create_file(&curlun->dev, &dev_attr_file); - if (rc) - goto error_luns; - rc = device_create_file(&curlun->dev, &dev_attr_nofua); - if (rc) - goto error_luns; + rc = fsg_num_buffers_validate(n); + if (rc != 0) + return rc; - if (lcfg->filename) { - rc = fsg_lun_open(curlun, lcfg->filename); - if (rc) - goto error_luns; - } else if (!curlun->removable) { - ERROR(common, "no file given for LUN%d\n", i); - rc = -EINVAL; - goto error_luns; - } - } - common->nluns = nluns; + buffhds = kcalloc(n, sizeof(*buffhds), GFP_KERNEL); + if (!buffhds) + return -ENOMEM; /* Data buffers cyclic list */ - bh = common->buffhds; - i = fsg_num_buffers; + bh = buffhds; + i = n; goto buffhds_first_it; do { bh->next = bh + 1; ++bh; buffhds_first_it: bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL); - if (unlikely(!bh->buf)) { - rc = -ENOMEM; + if (unlikely(!bh->buf)) goto error_release; - } } while (--i); - bh->next = common->buffhds; + bh->next = buffhds; - /* Prepare inquiryString */ - if (cfg->release != 0xffff) { - i = cfg->release; - } else { - i = usb_gadget_controller_number(gadget); - if (i >= 0) { - i = 0x0300 + i; - } else { - WARNING(common, "controller '%s' not recognized\n", - gadget->name); - i = 0x0399; + _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers); + common->fsg_num_buffers = n; + common->buffhds = buffhds; + + return 0; + +error_release: + /* + * "buf"s pointed to by heads after n - i are NULL + * so releasing them won't hurt + */ + _fsg_common_free_buffers(buffhds, n); + + return -ENOMEM; +} +EXPORT_SYMBOL_GPL(fsg_common_set_num_buffers); + +static inline void fsg_common_remove_sysfs(struct fsg_lun *lun) +{ + device_remove_file(&lun->dev, &dev_attr_nofua); + /* + * device_remove_file() => + * + * here the attr (e.g. dev_attr_ro) is only used to be passed to: + * + * sysfs_remove_file() => + * + * here e.g. both dev_attr_ro_cdrom and dev_attr_ro are in + * the same namespace and + * from here only attr->name is passed to: + * + * sysfs_hash_and_remove() + * + * attr->name is the same for dev_attr_ro_cdrom and + * dev_attr_ro + * attr->name is the same for dev_attr_file and + * dev_attr_file_nonremovable + * + * so we don't differentiate between removing e.g. dev_attr_ro_cdrom + * and dev_attr_ro + */ + device_remove_file(&lun->dev, &dev_attr_ro); + device_remove_file(&lun->dev, &dev_attr_file); +} + +void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs) +{ + if (sysfs) { + fsg_common_remove_sysfs(lun); + device_unregister(&lun->dev); + } + fsg_lun_close(lun); + kfree(lun); +} +EXPORT_SYMBOL_GPL(fsg_common_remove_lun); + +static void _fsg_common_remove_luns(struct fsg_common *common, int n) +{ + int i; + + for (i = 0; i < n; ++i) + if (common->luns[i]) { + fsg_common_remove_lun(common->luns[i], common->sysfs); + common->luns[i] = NULL; } +} +EXPORT_SYMBOL_GPL(fsg_common_remove_luns); + +void fsg_common_remove_luns(struct fsg_common *common) +{ + _fsg_common_remove_luns(common, common->nluns); +} + +void fsg_common_free_luns(struct fsg_common *common) +{ + fsg_common_remove_luns(common); + kfree(common->luns); + common->luns = NULL; +} +EXPORT_SYMBOL_GPL(fsg_common_free_luns); + +int fsg_common_set_nluns(struct fsg_common *common, int nluns) +{ + struct fsg_lun **curlun; + + /* Find out how many LUNs there should be */ + if (nluns < 1 || nluns > FSG_MAX_LUNS) { + pr_err("invalid number of LUNs: %u\n", nluns); + return -EINVAL; } - snprintf(common->inquiry_string, sizeof common->inquiry_string, - "%-8s%-16s%04x", cfg->vendor_name ?: "Linux", - /* Assume product name dependent on the first LUN */ - cfg->product_name ?: (common->luns->cdrom - ? "File-Stor Gadget" - : "File-CD Gadget"), - i); + + curlun = kcalloc(nluns, sizeof(*curlun), GFP_KERNEL); + if (unlikely(!curlun)) + return -ENOMEM; + + if (common->luns) + fsg_common_free_luns(common); + + common->luns = curlun; + common->nluns = nluns; + + pr_info("Number of LUNs=%d\n", common->nluns); + + return 0; +} +EXPORT_SYMBOL_GPL(fsg_common_set_nluns); + +void fsg_common_set_ops(struct fsg_common *common, + const struct fsg_operations *ops) +{ + common->ops = ops; +} +EXPORT_SYMBOL_GPL(fsg_common_set_ops); + +void fsg_common_free_buffers(struct fsg_common *common) +{ + _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers); + common->buffhds = NULL; +} +EXPORT_SYMBOL_GPL(fsg_common_free_buffers); + +int fsg_common_set_cdev(struct fsg_common *common, + struct usb_composite_dev *cdev, bool can_stall) +{ + struct usb_string *us; + + common->gadget = cdev->gadget; + common->ep0 = cdev->gadget->ep0; + common->ep0req = cdev->req; + common->cdev = cdev; + + us = usb_gstrings_attach(cdev, fsg_strings_array, + ARRAY_SIZE(fsg_strings)); + if (IS_ERR(us)) + return PTR_ERR(us); + + fsg_intf_desc.iInterface = us[FSG_STRING_INTERFACE].id; /* * Some peripheral controllers are known not to be able to * halt bulk endpoints correctly. If one of them is present, * disable stalls. */ - common->can_stall = cfg->can_stall && - !(gadget_is_at91(common->gadget)); + common->can_stall = can_stall && !(gadget_is_at91(common->gadget)); - spin_lock_init(&common->lock); - kref_init(&common->ref); + return 0; +} +EXPORT_SYMBOL_GPL(fsg_common_set_cdev); - /* Tell the thread to start working */ - common->thread_task = - kthread_create(fsg_main_thread, common, - cfg->thread_name ?: "file-storage"); - if (IS_ERR(common->thread_task)) { - rc = PTR_ERR(common->thread_task); - goto error_release; +static inline int fsg_common_add_sysfs(struct fsg_common *common, + struct fsg_lun *lun) +{ + int rc; + + rc = device_register(&lun->dev); + if (rc) { + put_device(&lun->dev); + return rc; } - init_completion(&common->thread_notifier); - init_waitqueue_head(&common->fsg_wait); - /* Information */ - INFO(common, FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n"); - INFO(common, "Number of LUNs=%d\n", common->nluns); + rc = device_create_file(&lun->dev, + lun->cdrom + ? &dev_attr_ro_cdrom + : &dev_attr_ro); + if (rc) + goto error; + rc = device_create_file(&lun->dev, + lun->removable + ? &dev_attr_file + : &dev_attr_file_nonremovable); + if (rc) + goto error; + rc = device_create_file(&lun->dev, &dev_attr_nofua); + if (rc) + goto error; + + return 0; + +error: + /* removing nonexistent files is a no-op */ + fsg_common_remove_sysfs(lun); + device_unregister(&lun->dev); + return rc; +} + +int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg, + unsigned int id, const char *name, + const char **name_pfx) +{ + struct fsg_lun *lun; + char *pathbuf, *p; + int rc = -ENOMEM; + + if (!common->nluns || !common->luns) + return -ENODEV; + + if (common->luns[id]) + return -EBUSY; + + if (!cfg->filename && !cfg->removable) { + pr_err("no file given for LUN%d\n", id); + return -EINVAL; + } + + lun = kzalloc(sizeof(*lun), GFP_KERNEL); + if (!lun) + return -ENOMEM; + + lun->name_pfx = name_pfx; + + lun->cdrom = !!cfg->cdrom; + lun->ro = cfg->cdrom || cfg->ro; + lun->initially_ro = lun->ro; + lun->removable = !!cfg->removable; + + if (!common->sysfs) { + /* we DON'T own the name!*/ + lun->name = name; + } else { + lun->dev.release = fsg_lun_release; + lun->dev.parent = &common->gadget->dev; + dev_set_drvdata(&lun->dev, &common->filesem); + dev_set_name(&lun->dev, "%s", name); + lun->name = dev_name(&lun->dev); + + rc = fsg_common_add_sysfs(common, lun); + if (rc) { + pr_info("failed to register LUN%d: %d\n", id, rc); + goto error_sysfs; + } + } + + common->luns[id] = lun; + + if (cfg->filename) { + rc = fsg_lun_open(lun, cfg->filename); + if (rc) + goto error_lun; + } pathbuf = kmalloc(PATH_MAX, GFP_KERNEL); - for (i = 0, nluns = common->nluns, curlun = common->luns; - i < nluns; - ++curlun, ++i) { - char *p = "(no medium)"; - if (fsg_lun_is_open(curlun)) { - p = "(error)"; - if (pathbuf) { - p = d_path(&curlun->filp->f_path, - pathbuf, PATH_MAX); - if (IS_ERR(p)) - p = "(error)"; - } + p = "(no medium)"; + if (fsg_lun_is_open(lun)) { + p = "(error)"; + if (pathbuf) { + p = d_path(&lun->filp->f_path, pathbuf, PATH_MAX); + if (IS_ERR(p)) + p = "(error)"; } - LINFO(curlun, "LUN: %s%s%sfile: %s\n", - curlun->removable ? "removable " : "", - curlun->ro ? "read only " : "", - curlun->cdrom ? "CD-ROM " : "", - p); } + pr_info("LUN: %s%s%sfile: %s\n", + lun->removable ? "removable " : "", + lun->ro ? "read only " : "", + lun->cdrom ? "CD-ROM " : "", + p); kfree(pathbuf); + return 0; + +error_lun: + if (common->sysfs) { + fsg_common_remove_sysfs(lun); + device_unregister(&lun->dev); + } + fsg_lun_close(lun); + common->luns[id] = NULL; +error_sysfs: + kfree(lun); + return rc; +} +EXPORT_SYMBOL_GPL(fsg_common_create_lun); + +int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg) +{ + char buf[8]; /* enough for 100000000 different numbers, decimal */ + int i, rc; + + for (i = 0; i < common->nluns; ++i) { + snprintf(buf, sizeof(buf), "lun%d", i); + rc = fsg_common_create_lun(common, &cfg->luns[i], i, buf, NULL); + if (rc) + goto fail; + } + + pr_info("Number of LUNs=%d\n", common->nluns); + + return 0; + +fail: + _fsg_common_remove_luns(common, i); + return rc; +} +EXPORT_SYMBOL_GPL(fsg_common_create_luns); + +void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn, + const char *pn) +{ + int i; + + /* Prepare inquiryString */ + i = get_default_bcdDevice(); + snprintf(common->inquiry_string, sizeof(common->inquiry_string), + "%-8s%-16s%04x", vn ?: "Linux", + /* Assume product name dependent on the first LUN */ + pn ?: ((*common->luns)->cdrom + ? "File-CD Gadget" + : "File-Stor Gadget"), + i); +} +EXPORT_SYMBOL_GPL(fsg_common_set_inquiry_string); + +int fsg_common_run_thread(struct fsg_common *common) +{ + common->state = FSG_STATE_IDLE; + /* Tell the thread to start working */ + common->thread_task = + kthread_create(fsg_main_thread, common, "file-storage"); + if (IS_ERR(common->thread_task)) { + common->state = FSG_STATE_TERMINATED; + return PTR_ERR(common->thread_task); + } + DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task)); wake_up_process(common->thread_task); - return common; - -error_luns: - common->nluns = i + 1; -error_release: - common->state = FSG_STATE_TERMINATED; /* The thread is dead */ - /* Call fsg_common_release() directly, ref might be not initialised. */ - fsg_common_release(&common->ref); - return ERR_PTR(rc); + return 0; } +EXPORT_SYMBOL_GPL(fsg_common_run_thread); static void fsg_common_release(struct kref *ref) { @@ -2940,30 +3069,26 @@ static void fsg_common_release(struct kref *ref) } if (likely(common->luns)) { - struct fsg_lun *lun = common->luns; + struct fsg_lun **lun_it = common->luns; unsigned i = common->nluns; /* In error recovery common->nluns may be zero. */ - for (; i; --i, ++lun) { - device_remove_file(&lun->dev, &dev_attr_nofua); - device_remove_file(&lun->dev, &dev_attr_ro); - device_remove_file(&lun->dev, &dev_attr_file); + for (; i; --i, ++lun_it) { + struct fsg_lun *lun = *lun_it; + if (!lun) + continue; + if (common->sysfs) + fsg_common_remove_sysfs(lun); fsg_lun_close(lun); - device_unregister(&lun->dev); + if (common->sysfs) + device_unregister(&lun->dev); + kfree(lun); } kfree(common->luns); } - { - struct fsg_buffhd *bh = common->buffhds; - unsigned i = fsg_num_buffers; - do { - kfree(bh->buf); - } while (++bh, --i); - } - - kfree(common->buffhds); + _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers); if (common->free_storage_on_release) kfree(common); } @@ -2971,32 +3096,27 @@ static void fsg_common_release(struct kref *ref) /*-------------------------------------------------------------------------*/ -static void fsg_unbind(struct usb_configuration *c, struct usb_function *f) -{ - struct fsg_dev *fsg = fsg_from_func(f); - struct fsg_common *common = fsg->common; - - DBG(fsg, "unbind\n"); - if (fsg->common->fsg == fsg) { - fsg->common->new_fsg = NULL; - raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE); - /* FIXME: make interruptible or killable somehow? */ - wait_event(common->fsg_wait, common->fsg != fsg); - } - - fsg_common_put(common); - usb_free_descriptors(fsg->function.descriptors); - usb_free_descriptors(fsg->function.hs_descriptors); - usb_free_descriptors(fsg->function.ss_descriptors); - kfree(fsg); -} - static int fsg_bind(struct usb_configuration *c, struct usb_function *f) { struct fsg_dev *fsg = fsg_from_func(f); struct usb_gadget *gadget = c->cdev->gadget; int i; struct usb_ep *ep; + unsigned max_burst; + int ret; + struct fsg_opts *opts; + + opts = fsg_opts_from_func_inst(f->fi); + if (!opts->no_configfs) { + ret = fsg_common_set_cdev(fsg->common, c->cdev, + fsg->common->can_stall); + if (ret) + return ret; + fsg_common_set_inquiry_string(fsg->common, NULL, NULL); + ret = fsg_common_run_thread(fsg->common); + if (ret) + return ret; + } fsg->gadget = gadget; @@ -3020,45 +3140,27 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f) ep->driver_data = fsg->common; /* claim the endpoint */ fsg->bulk_out = ep; - /* Copy descriptors */ - f->descriptors = usb_copy_descriptors(fsg_fs_function); - if (unlikely(!f->descriptors)) - return -ENOMEM; - - if (gadget_is_dualspeed(gadget)) { - /* Assume endpoint addresses are the same for both speeds */ - fsg_hs_bulk_in_desc.bEndpointAddress = - fsg_fs_bulk_in_desc.bEndpointAddress; - fsg_hs_bulk_out_desc.bEndpointAddress = - fsg_fs_bulk_out_desc.bEndpointAddress; - f->hs_descriptors = usb_copy_descriptors(fsg_hs_function); - if (unlikely(!f->hs_descriptors)) { - usb_free_descriptors(f->descriptors); - return -ENOMEM; - } - } - - if (gadget_is_superspeed(gadget)) { - unsigned max_burst; + /* Assume endpoint addresses are the same for both speeds */ + fsg_hs_bulk_in_desc.bEndpointAddress = + fsg_fs_bulk_in_desc.bEndpointAddress; + fsg_hs_bulk_out_desc.bEndpointAddress = + fsg_fs_bulk_out_desc.bEndpointAddress; - /* Calculate bMaxBurst, we know packet size is 1024 */ - max_burst = min_t(unsigned, FSG_BUFLEN / 1024, 15); + /* Calculate bMaxBurst, we know packet size is 1024 */ + max_burst = min_t(unsigned, FSG_BUFLEN / 1024, 15); - fsg_ss_bulk_in_desc.bEndpointAddress = - fsg_fs_bulk_in_desc.bEndpointAddress; - fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst; + fsg_ss_bulk_in_desc.bEndpointAddress = + fsg_fs_bulk_in_desc.bEndpointAddress; + fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst; - fsg_ss_bulk_out_desc.bEndpointAddress = - fsg_fs_bulk_out_desc.bEndpointAddress; - fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst; + fsg_ss_bulk_out_desc.bEndpointAddress = + fsg_fs_bulk_out_desc.bEndpointAddress; + fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst; - f->ss_descriptors = usb_copy_descriptors(fsg_ss_function); - if (unlikely(!f->ss_descriptors)) { - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - return -ENOMEM; - } - } + ret = usb_assign_descriptors(f, fsg_fs_function, fsg_hs_function, + fsg_ss_function); + if (ret) + goto autoconf_fail; return 0; @@ -3067,103 +3169,472 @@ autoconf_fail: return -ENOTSUPP; } +/****************************** ALLOCATE FUNCTION *************************/ -/****************************** ADD FUNCTION ******************************/ +static void fsg_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct fsg_dev *fsg = fsg_from_func(f); + struct fsg_common *common = fsg->common; -static struct usb_gadget_strings *fsg_strings_array[] = { - &fsg_stringtab, + DBG(fsg, "unbind\n"); + if (fsg->common->fsg == fsg) { + fsg->common->new_fsg = NULL; + raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE); + /* FIXME: make interruptible or killable somehow? */ + wait_event(common->fsg_wait, common->fsg != fsg); + } + + usb_free_all_descriptors(&fsg->function); +} + +static inline struct fsg_lun_opts *to_fsg_lun_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct fsg_lun_opts, group); +} + +static inline struct fsg_opts *to_fsg_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct fsg_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(fsg_lun_opts); +CONFIGFS_ATTR_OPS(fsg_lun_opts); + +static void fsg_lun_attr_release(struct config_item *item) +{ + struct fsg_lun_opts *lun_opts; + + lun_opts = to_fsg_lun_opts(item); + kfree(lun_opts); +} + +static struct configfs_item_operations fsg_lun_item_ops = { + .release = fsg_lun_attr_release, + .show_attribute = fsg_lun_opts_attr_show, + .store_attribute = fsg_lun_opts_attr_store, +}; + +static ssize_t fsg_lun_opts_file_show(struct fsg_lun_opts *opts, char *page) +{ + struct fsg_opts *fsg_opts; + + fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent); + + return fsg_show_file(opts->lun, &fsg_opts->common->filesem, page); +} + +static ssize_t fsg_lun_opts_file_store(struct fsg_lun_opts *opts, + const char *page, size_t len) +{ + struct fsg_opts *fsg_opts; + + fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent); + + return fsg_store_file(opts->lun, &fsg_opts->common->filesem, page, len); +} + +static struct fsg_lun_opts_attribute fsg_lun_opts_file = + __CONFIGFS_ATTR(file, S_IRUGO | S_IWUSR, fsg_lun_opts_file_show, + fsg_lun_opts_file_store); + +static ssize_t fsg_lun_opts_ro_show(struct fsg_lun_opts *opts, char *page) +{ + return fsg_show_ro(opts->lun, page); +} + +static ssize_t fsg_lun_opts_ro_store(struct fsg_lun_opts *opts, + const char *page, size_t len) +{ + struct fsg_opts *fsg_opts; + + fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent); + + return fsg_store_ro(opts->lun, &fsg_opts->common->filesem, page, len); +} + +static struct fsg_lun_opts_attribute fsg_lun_opts_ro = + __CONFIGFS_ATTR(ro, S_IRUGO | S_IWUSR, fsg_lun_opts_ro_show, + fsg_lun_opts_ro_store); + +static ssize_t fsg_lun_opts_removable_show(struct fsg_lun_opts *opts, + char *page) +{ + return fsg_show_removable(opts->lun, page); +} + +static ssize_t fsg_lun_opts_removable_store(struct fsg_lun_opts *opts, + const char *page, size_t len) +{ + return fsg_store_removable(opts->lun, page, len); +} + +static struct fsg_lun_opts_attribute fsg_lun_opts_removable = + __CONFIGFS_ATTR(removable, S_IRUGO | S_IWUSR, + fsg_lun_opts_removable_show, + fsg_lun_opts_removable_store); + +static ssize_t fsg_lun_opts_cdrom_show(struct fsg_lun_opts *opts, char *page) +{ + return fsg_show_cdrom(opts->lun, page); +} + +static ssize_t fsg_lun_opts_cdrom_store(struct fsg_lun_opts *opts, + const char *page, size_t len) +{ + struct fsg_opts *fsg_opts; + + fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent); + + return fsg_store_cdrom(opts->lun, &fsg_opts->common->filesem, page, + len); +} + +static struct fsg_lun_opts_attribute fsg_lun_opts_cdrom = + __CONFIGFS_ATTR(cdrom, S_IRUGO | S_IWUSR, fsg_lun_opts_cdrom_show, + fsg_lun_opts_cdrom_store); + +static ssize_t fsg_lun_opts_nofua_show(struct fsg_lun_opts *opts, char *page) +{ + return fsg_show_nofua(opts->lun, page); +} + +static ssize_t fsg_lun_opts_nofua_store(struct fsg_lun_opts *opts, + const char *page, size_t len) +{ + return fsg_store_nofua(opts->lun, page, len); +} + +static struct fsg_lun_opts_attribute fsg_lun_opts_nofua = + __CONFIGFS_ATTR(nofua, S_IRUGO | S_IWUSR, fsg_lun_opts_nofua_show, + fsg_lun_opts_nofua_store); + +static struct configfs_attribute *fsg_lun_attrs[] = { + &fsg_lun_opts_file.attr, + &fsg_lun_opts_ro.attr, + &fsg_lun_opts_removable.attr, + &fsg_lun_opts_cdrom.attr, + &fsg_lun_opts_nofua.attr, NULL, }; -static int fsg_bind_config(struct usb_composite_dev *cdev, - struct usb_configuration *c, - struct fsg_common *common) +static struct config_item_type fsg_lun_type = { + .ct_item_ops = &fsg_lun_item_ops, + .ct_attrs = fsg_lun_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *fsg_lun_make(struct config_group *group, + const char *name) { - struct fsg_dev *fsg; + struct fsg_lun_opts *opts; + struct fsg_opts *fsg_opts; + struct fsg_lun_config config; + char *num_str; + u8 num; + int ret; + + num_str = strchr(name, '.'); + if (!num_str) { + pr_err("Unable to locate . in LUN.NUMBER\n"); + return ERR_PTR(-EINVAL); + } + num_str++; + + ret = kstrtou8(num_str, 0, &num); + if (ret) + return ERR_PTR(ret); + + fsg_opts = to_fsg_opts(&group->cg_item); + if (num >= FSG_MAX_LUNS) + return ERR_PTR(-ERANGE); + + mutex_lock(&fsg_opts->lock); + if (fsg_opts->refcnt || fsg_opts->common->luns[num]) { + ret = -EBUSY; + goto out; + } + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) { + ret = -ENOMEM; + goto out; + } + + memset(&config, 0, sizeof(config)); + config.removable = true; + + ret = fsg_common_create_lun(fsg_opts->common, &config, num, name, + (const char **)&group->cg_item.ci_name); + if (ret) { + kfree(opts); + goto out; + } + opts->lun = fsg_opts->common->luns[num]; + opts->lun_id = num; + mutex_unlock(&fsg_opts->lock); + + config_group_init_type_name(&opts->group, name, &fsg_lun_type); + + return &opts->group; +out: + mutex_unlock(&fsg_opts->lock); + return ERR_PTR(ret); +} + +static void fsg_lun_drop(struct config_group *group, struct config_item *item) +{ + struct fsg_lun_opts *lun_opts; + struct fsg_opts *fsg_opts; + + lun_opts = to_fsg_lun_opts(item); + fsg_opts = to_fsg_opts(&group->cg_item); + + mutex_lock(&fsg_opts->lock); + if (fsg_opts->refcnt) { + struct config_item *gadget; + + gadget = group->cg_item.ci_parent->ci_parent; + unregister_gadget_item(gadget); + } + + fsg_common_remove_lun(lun_opts->lun, fsg_opts->common->sysfs); + fsg_opts->common->luns[lun_opts->lun_id] = NULL; + lun_opts->lun_id = 0; + mutex_unlock(&fsg_opts->lock); + + config_item_put(item); +} + +CONFIGFS_ATTR_STRUCT(fsg_opts); +CONFIGFS_ATTR_OPS(fsg_opts); + +static void fsg_attr_release(struct config_item *item) +{ + struct fsg_opts *opts = to_fsg_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations fsg_item_ops = { + .release = fsg_attr_release, + .show_attribute = fsg_opts_attr_show, + .store_attribute = fsg_opts_attr_store, +}; + +static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->common->can_stall); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page, + size_t len) +{ + int ret; + bool stall; + + mutex_lock(&opts->lock); + + if (opts->refcnt) { + mutex_unlock(&opts->lock); + return -EBUSY; + } + + ret = strtobool(page, &stall); + if (!ret) { + opts->common->can_stall = stall; + ret = len; + } + + mutex_unlock(&opts->lock); + + return ret; +} + +static struct fsg_opts_attribute fsg_opts_stall = + __CONFIGFS_ATTR(stall, S_IRUGO | S_IWUSR, fsg_opts_stall_show, + fsg_opts_stall_store); + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES +static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->common->fsg_num_buffers); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t fsg_opts_num_buffers_store(struct fsg_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + ret = fsg_num_buffers_validate(num); + if (ret) + goto end; + + fsg_common_set_num_buffers(opts->common, num); + ret = len; + +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct fsg_opts_attribute fsg_opts_num_buffers = + __CONFIGFS_ATTR(num_buffers, S_IRUGO | S_IWUSR, + fsg_opts_num_buffers_show, + fsg_opts_num_buffers_store); + +#endif + +static struct configfs_attribute *fsg_attrs[] = { + &fsg_opts_stall.attr, +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + &fsg_opts_num_buffers.attr, +#endif + NULL, +}; + +static struct configfs_group_operations fsg_group_ops = { + .make_group = fsg_lun_make, + .drop_item = fsg_lun_drop, +}; + +static struct config_item_type fsg_func_type = { + .ct_item_ops = &fsg_item_ops, + .ct_group_ops = &fsg_group_ops, + .ct_attrs = fsg_attrs, + .ct_owner = THIS_MODULE, +}; + +static void fsg_free_inst(struct usb_function_instance *fi) +{ + struct fsg_opts *opts; + + opts = fsg_opts_from_func_inst(fi); + fsg_common_put(opts->common); + kfree(opts); +} + +static struct usb_function_instance *fsg_alloc_inst(void) +{ + struct fsg_opts *opts; + struct fsg_lun_config config; int rc; - fsg = kzalloc(sizeof *fsg, GFP_KERNEL); - if (unlikely(!fsg)) - return -ENOMEM; + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = fsg_free_inst; + opts->common = fsg_common_setup(opts->common); + if (IS_ERR(opts->common)) { + rc = PTR_ERR(opts->common); + goto release_opts; + } + rc = fsg_common_set_nluns(opts->common, FSG_MAX_LUNS); + if (rc) + goto release_opts; - fsg->function.name = FSG_DRIVER_DESC; - fsg->function.strings = fsg_strings_array; - fsg->function.bind = fsg_bind; - fsg->function.unbind = fsg_unbind; - fsg->function.setup = fsg_setup; - fsg->function.set_alt = fsg_set_alt; - fsg->function.disable = fsg_disable; + rc = fsg_common_set_num_buffers(opts->common, + CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS); + if (rc) + goto release_luns; - fsg->common = common; - /* - * Our caller holds a reference to common structure so we - * don't have to be worry about it being freed until we return - * from this function. So instead of incrementing counter now - * and decrement in error recovery we increment it only when - * call to usb_add_function() was successful. - */ + pr_info(FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n"); - rc = usb_add_function(c, &fsg->function); - if (unlikely(rc)) - kfree(fsg); - else - fsg_common_get(fsg->common); - return rc; + memset(&config, 0, sizeof(config)); + config.removable = true; + rc = fsg_common_create_lun(opts->common, &config, 0, "lun.0", + (const char **)&opts->func_inst.group.cg_item.ci_name); + opts->lun0.lun = opts->common->luns[0]; + opts->lun0.lun_id = 0; + config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type); + opts->default_groups[0] = &opts->lun0.group; + opts->func_inst.group.default_groups = opts->default_groups; + + config_group_init_type_name(&opts->func_inst.group, "", &fsg_func_type); + + return &opts->func_inst; + +release_luns: + kfree(opts->common->luns); +release_opts: + kfree(opts); + return ERR_PTR(rc); +} + +static void fsg_free(struct usb_function *f) +{ + struct fsg_dev *fsg; + struct fsg_opts *opts; + + fsg = container_of(f, struct fsg_dev, function); + opts = container_of(f->fi, struct fsg_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); + + kfree(fsg); } -static inline int __deprecated __maybe_unused -fsg_add(struct usb_composite_dev *cdev, struct usb_configuration *c, - struct fsg_common *common) +static struct usb_function *fsg_alloc(struct usb_function_instance *fi) { - return fsg_bind_config(cdev, c, common); + struct fsg_opts *opts = fsg_opts_from_func_inst(fi); + struct fsg_common *common = opts->common; + struct fsg_dev *fsg; + + fsg = kzalloc(sizeof(*fsg), GFP_KERNEL); + if (unlikely(!fsg)) + return ERR_PTR(-ENOMEM); + + mutex_lock(&opts->lock); + opts->refcnt++; + mutex_unlock(&opts->lock); + fsg->function.name = FSG_DRIVER_DESC; + fsg->function.bind = fsg_bind; + fsg->function.unbind = fsg_unbind; + fsg->function.setup = fsg_setup; + fsg->function.set_alt = fsg_set_alt; + fsg->function.disable = fsg_disable; + fsg->function.free_func = fsg_free; + + fsg->common = common; + + return &fsg->function; } +DECLARE_USB_FUNCTION_INIT(mass_storage, fsg_alloc_inst, fsg_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michal Nazarewicz"); /************************* Module parameters *************************/ -struct fsg_module_parameters { - char *file[FSG_MAX_LUNS]; - bool ro[FSG_MAX_LUNS]; - bool removable[FSG_MAX_LUNS]; - bool cdrom[FSG_MAX_LUNS]; - bool nofua[FSG_MAX_LUNS]; - - unsigned int file_count, ro_count, removable_count, cdrom_count; - unsigned int nofua_count; - unsigned int luns; /* nluns */ - bool stall; /* can_stall */ -}; -#define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ - module_param_array_named(prefix ## name, params.name, type, \ - &prefix ## params.name ## _count, \ - S_IRUGO); \ - MODULE_PARM_DESC(prefix ## name, desc) - -#define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \ - module_param_named(prefix ## name, params.name, type, \ - S_IRUGO); \ - MODULE_PARM_DESC(prefix ## name, desc) - -#define FSG_MODULE_PARAMETERS(prefix, params) \ - _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \ - "names of backing files or devices"); \ - _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \ - "true to force read-only"); \ - _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \ - "true to simulate removable media"); \ - _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \ - "true to simulate CD-ROM instead of disk"); \ - _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \ - "true to ignore SCSI WRITE(10,12) FUA bit"); \ - _FSG_MODULE_PARAM(prefix, params, luns, uint, \ - "number of LUNs"); \ - _FSG_MODULE_PARAM(prefix, params, stall, bool, \ - "false to prevent bulk stalls") - -static void -fsg_config_from_params(struct fsg_config *cfg, - const struct fsg_module_parameters *params) +void fsg_config_from_params(struct fsg_config *cfg, + const struct fsg_module_parameters *params, + unsigned int fsg_num_buffers) { struct fsg_lun_config *lun; unsigned i; @@ -3175,40 +3646,23 @@ fsg_config_from_params(struct fsg_config *cfg, for (i = 0, lun = cfg->luns; i < cfg->nluns; ++i, ++lun) { lun->ro = !!params->ro[i]; lun->cdrom = !!params->cdrom[i]; - lun->removable = /* Removable by default */ - params->removable_count <= i || params->removable[i]; + lun->removable = !!params->removable[i]; lun->filename = params->file_count > i && params->file[i][0] ? params->file[i] - : 0; + : NULL; } /* Let MSF use defaults */ - cfg->lun_name_format = 0; - cfg->thread_name = 0; - cfg->vendor_name = 0; - cfg->product_name = 0; - cfg->release = 0xffff; + cfg->vendor_name = NULL; + cfg->product_name = NULL; cfg->ops = NULL; cfg->private_data = NULL; /* Finalise */ cfg->can_stall = params->stall; + cfg->fsg_num_buffers = fsg_num_buffers; } - -static inline struct fsg_common * -fsg_common_from_params(struct fsg_common *common, - struct usb_composite_dev *cdev, - const struct fsg_module_parameters *params) - __attribute__((unused)); -static inline struct fsg_common * -fsg_common_from_params(struct fsg_common *common, - struct usb_composite_dev *cdev, - const struct fsg_module_parameters *params) -{ - struct fsg_config cfg; - fsg_config_from_params(&cfg, params); - return fsg_common_init(common, cdev, &cfg); -} +EXPORT_SYMBOL_GPL(fsg_config_from_params); diff --git a/drivers/usb/gadget/f_mass_storage.h b/drivers/usb/gadget/f_mass_storage.h new file mode 100644 index 00000000000..b4866fcef30 --- /dev/null +++ b/drivers/usb/gadget/f_mass_storage.h @@ -0,0 +1,166 @@ +#ifndef USB_F_MASS_STORAGE_H +#define USB_F_MASS_STORAGE_H + +#include <linux/usb/composite.h> +#include "storage_common.h" + +struct fsg_module_parameters { + char *file[FSG_MAX_LUNS]; + bool ro[FSG_MAX_LUNS]; + bool removable[FSG_MAX_LUNS]; + bool cdrom[FSG_MAX_LUNS]; + bool nofua[FSG_MAX_LUNS]; + + unsigned int file_count, ro_count, removable_count, cdrom_count; + unsigned int nofua_count; + unsigned int luns; /* nluns */ + bool stall; /* can_stall */ +}; + +#define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ + module_param_array_named(prefix ## name, params.name, type, \ + &prefix ## params.name ## _count, \ + S_IRUGO); \ + MODULE_PARM_DESC(prefix ## name, desc) + +#define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \ + module_param_named(prefix ## name, params.name, type, \ + S_IRUGO); \ + MODULE_PARM_DESC(prefix ## name, desc) + +#define __FSG_MODULE_PARAMETERS(prefix, params) \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \ + "names of backing files or devices"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \ + "true to force read-only"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \ + "true to simulate removable media"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \ + "true to simulate CD-ROM instead of disk"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \ + "true to ignore SCSI WRITE(10,12) FUA bit"); \ + _FSG_MODULE_PARAM(prefix, params, luns, uint, \ + "number of LUNs"); \ + _FSG_MODULE_PARAM(prefix, params, stall, bool, \ + "false to prevent bulk stalls") + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +#define FSG_MODULE_PARAMETERS(prefix, params) \ + __FSG_MODULE_PARAMETERS(prefix, params); \ + module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);\ + MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers") +#else + +#define FSG_MODULE_PARAMETERS(prefix, params) \ + __FSG_MODULE_PARAMETERS(prefix, params) + +#endif + +struct fsg_common; + +/* FSF callback functions */ +struct fsg_operations { + /* + * Callback function to call when thread exits. If no + * callback is set or it returns value lower then zero MSF + * will force eject all LUNs it operates on (including those + * marked as non-removable or with prevent_medium_removal flag + * set). + */ + int (*thread_exits)(struct fsg_common *common); +}; + +struct fsg_lun_opts { + struct config_group group; + struct fsg_lun *lun; + int lun_id; +}; + +struct fsg_opts { + struct fsg_common *common; + struct usb_function_instance func_inst; + struct fsg_lun_opts lun0; + struct config_group *default_groups[2]; + bool no_configfs; /* for legacy gadgets */ + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +struct fsg_lun_config { + const char *filename; + char ro; + char removable; + char cdrom; + char nofua; +}; + +struct fsg_config { + unsigned nluns; + struct fsg_lun_config luns[FSG_MAX_LUNS]; + + /* Callback functions. */ + const struct fsg_operations *ops; + /* Gadget's private data. */ + void *private_data; + + const char *vendor_name; /* 8 characters or less */ + const char *product_name; /* 16 characters or less */ + + char can_stall; + unsigned int fsg_num_buffers; +}; + +static inline struct fsg_opts * +fsg_opts_from_func_inst(const struct usb_function_instance *fi) +{ + return container_of(fi, struct fsg_opts, func_inst); +} + +void fsg_common_get(struct fsg_common *common); + +void fsg_common_put(struct fsg_common *common); + +void fsg_common_set_sysfs(struct fsg_common *common, bool sysfs); + +int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n); + +void fsg_common_free_buffers(struct fsg_common *common); + +int fsg_common_set_cdev(struct fsg_common *common, + struct usb_composite_dev *cdev, bool can_stall); + +void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs); + +void fsg_common_remove_luns(struct fsg_common *common); + +void fsg_common_free_luns(struct fsg_common *common); + +int fsg_common_set_nluns(struct fsg_common *common, int nluns); + +void fsg_common_set_ops(struct fsg_common *common, + const struct fsg_operations *ops); + +int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg, + unsigned int id, const char *name, + const char **name_pfx); + +int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg); + +void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn, + const char *pn); + +int fsg_common_run_thread(struct fsg_common *common); + +void fsg_config_from_params(struct fsg_config *cfg, + const struct fsg_module_parameters *params, + unsigned int fsg_num_buffers); + +#endif /* USB_F_MASS_STORAGE_H */ diff --git a/drivers/usb/gadget/f_midi.c b/drivers/usb/gadget/f_midi.c index 3797b3d6c62..807b31c0edc 100644 --- a/drivers/usb/gadget/f_midi.c +++ b/drivers/usb/gadget/f_midi.c @@ -21,7 +21,6 @@ #include <linux/kernel.h> #include <linux/slab.h> -#include <linux/utsname.h> #include <linux/device.h> #include <sound/core.h> @@ -33,6 +32,8 @@ #include <linux/usb/audio.h> #include <linux/usb/midi.h> +#include "u_f.h" + MODULE_AUTHOR("Ben Williamson"); MODULE_LICENSE("GPL v2"); @@ -192,20 +193,10 @@ static struct usb_gadget_strings *midi_strings[] = { NULL, }; -static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) +static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep, + unsigned length) { - struct usb_request *req; - - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req) { - req->length = length; - req->buf = kmalloc(length, GFP_ATOMIC); - if (!req->buf) { - usb_ep_free_request(ep, req); - req = NULL; - } - } - return req; + return alloc_ep_req(ep, length, length); } static void free_ep_req(struct usb_ep *ep, struct usb_request *req) @@ -366,7 +357,7 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt) /* allocate a bunch of read buffers and queue them all at once. */ for (i = 0; i < midi->qlen && err == 0; i++) { struct usb_request *req = - alloc_ep_req(midi->out_ep, midi->buflen); + midi_alloc_ep_req(midi->out_ep, midi->buflen); if (req == NULL) return -ENOMEM; @@ -415,7 +406,7 @@ static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f) kfree(midi->id); midi->id = NULL; - usb_free_descriptors(f->descriptors); + usb_free_all_descriptors(f); kfree(midi); } @@ -547,7 +538,7 @@ static void f_midi_transmit(struct f_midi *midi, struct usb_request *req) return; if (!req) - req = alloc_ep_req(ep, midi->buflen); + req = midi_alloc_ep_req(ep, midi->buflen); if (!req) { ERROR(midi, "gmidi_transmit: alloc_ep_request failed\n"); @@ -673,9 +664,10 @@ static int f_midi_register_card(struct f_midi *midi) .dev_free = f_midi_snd_free, }; - err = snd_card_create(midi->index, midi->id, THIS_MODULE, 0, &card); + err = snd_card_new(&midi->gadget->dev, midi->index, midi->id, + THIS_MODULE, 0, &card); if (err < 0) { - ERROR(midi, "snd_card_create() failed\n"); + ERROR(midi, "snd_card_new() failed\n"); goto fail; } midi->card = card; @@ -712,8 +704,6 @@ static int f_midi_register_card(struct f_midi *midi) snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &gmidi_in_ops); snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &gmidi_out_ops); - snd_card_set_dev(card, &midi->gadget->dev); - /* register it - we're ready to go */ err = snd_card_register(card); if (err < 0) { @@ -780,7 +770,7 @@ f_midi_bind(struct usb_configuration *c, struct usb_function *f) midi->out_ep->driver_data = cdev; /* claim */ /* allocate temporary function list */ - midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(midi_function), + midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(*midi_function), GFP_KERNEL); if (!midi_function) { status = -ENOMEM; @@ -882,19 +872,25 @@ f_midi_bind(struct usb_configuration *c, struct usb_function *f) * both speeds */ /* copy descriptors, and track endpoint copies */ + f->fs_descriptors = usb_copy_descriptors(midi_function); + if (!f->fs_descriptors) + goto fail_f_midi; + if (gadget_is_dualspeed(c->cdev->gadget)) { - c->highspeed = true; bulk_in_desc.wMaxPacketSize = cpu_to_le16(512); bulk_out_desc.wMaxPacketSize = cpu_to_le16(512); f->hs_descriptors = usb_copy_descriptors(midi_function); - } else { - f->descriptors = usb_copy_descriptors(midi_function); + if (!f->hs_descriptors) + goto fail_f_midi; } kfree(midi_function); return 0; +fail_f_midi: + kfree(midi_function); + usb_free_descriptors(f->hs_descriptors); fail: /* we might as well release our claims on endpoints */ if (midi->out_ep) diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c index aab8eded045..a9499fd3079 100644 --- a/drivers/usb/gadget/f_ncm.c +++ b/drivers/usb/gadget/f_ncm.c @@ -16,6 +16,7 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/crc32.h> @@ -23,6 +24,8 @@ #include <linux/usb/cdc.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_ncm.h" /* * This function is a "CDC Network Control Model" (CDC NCM) Ethernet link. @@ -56,8 +59,9 @@ struct f_ncm { u8 notify_state; bool is_open; - struct ndp_parser_opts *parser_opts; + const struct ndp_parser_opts *parser_opts; bool is_crc; + u32 ndp_sign; /* * for notification, it is accessed from both @@ -102,7 +106,7 @@ static inline unsigned ncm_bitrate(struct usb_gadget *g) USB_CDC_NCM_NTB32_SUPPORTED) static struct usb_cdc_ncm_ntb_parameters ntb_parameters = { - .wLength = sizeof ntb_parameters, + .wLength = cpu_to_le16(sizeof(ntb_parameters)), .bmNtbFormatsSupported = cpu_to_le16(FORMATS_SUPPORTED), .dwNtbInMaxSize = cpu_to_le32(NTB_DEFAULT_IN_SIZE), .wNdpInDivisor = cpu_to_le16(4), @@ -121,10 +125,10 @@ static struct usb_cdc_ncm_ntb_parameters ntb_parameters = { * waste less bandwidth. */ -#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ +#define NCM_STATUS_INTERVAL_MS 32 #define NCM_STATUS_BYTECOUNT 16 /* 8 byte header + data */ -static struct usb_interface_assoc_descriptor ncm_iad_desc __initdata = { +static struct usb_interface_assoc_descriptor ncm_iad_desc = { .bLength = sizeof ncm_iad_desc, .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, @@ -138,7 +142,7 @@ static struct usb_interface_assoc_descriptor ncm_iad_desc __initdata = { /* interface descriptor: */ -static struct usb_interface_descriptor ncm_control_intf __initdata = { +static struct usb_interface_descriptor ncm_control_intf = { .bLength = sizeof ncm_control_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -150,7 +154,7 @@ static struct usb_interface_descriptor ncm_control_intf __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_cdc_header_desc ncm_header_desc __initdata = { +static struct usb_cdc_header_desc ncm_header_desc = { .bLength = sizeof ncm_header_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, @@ -158,7 +162,7 @@ static struct usb_cdc_header_desc ncm_header_desc __initdata = { .bcdCDC = cpu_to_le16(0x0110), }; -static struct usb_cdc_union_desc ncm_union_desc __initdata = { +static struct usb_cdc_union_desc ncm_union_desc = { .bLength = sizeof(ncm_union_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_UNION_TYPE, @@ -166,7 +170,7 @@ static struct usb_cdc_union_desc ncm_union_desc __initdata = { /* .bSlaveInterface0 = DYNAMIC */ }; -static struct usb_cdc_ether_desc ecm_desc __initdata = { +static struct usb_cdc_ether_desc ecm_desc = { .bLength = sizeof ecm_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, @@ -181,7 +185,7 @@ static struct usb_cdc_ether_desc ecm_desc __initdata = { #define NCAPS (USB_CDC_NCM_NCAP_ETH_FILTER | USB_CDC_NCM_NCAP_CRC_MODE) -static struct usb_cdc_ncm_desc ncm_desc __initdata = { +static struct usb_cdc_ncm_desc ncm_desc = { .bLength = sizeof ncm_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_NCM_TYPE, @@ -193,7 +197,7 @@ static struct usb_cdc_ncm_desc ncm_desc __initdata = { /* the default data interface has no endpoints ... */ -static struct usb_interface_descriptor ncm_data_nop_intf __initdata = { +static struct usb_interface_descriptor ncm_data_nop_intf = { .bLength = sizeof ncm_data_nop_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -208,7 +212,7 @@ static struct usb_interface_descriptor ncm_data_nop_intf __initdata = { /* ... but the "real" data interface has two bulk endpoints */ -static struct usb_interface_descriptor ncm_data_intf __initdata = { +static struct usb_interface_descriptor ncm_data_intf = { .bLength = sizeof ncm_data_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -223,17 +227,17 @@ static struct usb_interface_descriptor ncm_data_intf __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor fs_ncm_notify_desc __initdata = { +static struct usb_endpoint_descriptor fs_ncm_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), - .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, + .bInterval = NCM_STATUS_INTERVAL_MS, }; -static struct usb_endpoint_descriptor fs_ncm_in_desc __initdata = { +static struct usb_endpoint_descriptor fs_ncm_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -241,7 +245,7 @@ static struct usb_endpoint_descriptor fs_ncm_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor fs_ncm_out_desc __initdata = { +static struct usb_endpoint_descriptor fs_ncm_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -249,7 +253,7 @@ static struct usb_endpoint_descriptor fs_ncm_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *ncm_fs_function[] __initdata = { +static struct usb_descriptor_header *ncm_fs_function[] = { (struct usb_descriptor_header *) &ncm_iad_desc, /* CDC NCM control descriptors */ (struct usb_descriptor_header *) &ncm_control_intf, @@ -268,16 +272,16 @@ static struct usb_descriptor_header *ncm_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor hs_ncm_notify_desc __initdata = { +static struct usb_endpoint_descriptor hs_ncm_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, + .bInterval = USB_MS_TO_HS_INTERVAL(NCM_STATUS_INTERVAL_MS), }; -static struct usb_endpoint_descriptor hs_ncm_in_desc __initdata = { +static struct usb_endpoint_descriptor hs_ncm_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -286,7 +290,7 @@ static struct usb_endpoint_descriptor hs_ncm_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor hs_ncm_out_desc __initdata = { +static struct usb_endpoint_descriptor hs_ncm_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -295,7 +299,7 @@ static struct usb_endpoint_descriptor hs_ncm_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *ncm_hs_function[] __initdata = { +static struct usb_descriptor_header *ncm_hs_function[] = { (struct usb_descriptor_header *) &ncm_iad_desc, /* CDC NCM control descriptors */ (struct usb_descriptor_header *) &ncm_control_intf, @@ -321,7 +325,7 @@ static struct usb_descriptor_header *ncm_hs_function[] __initdata = { static struct usb_string ncm_string_defs[] = { [STRING_CTRL_IDX].s = "CDC Network Control Model (NCM)", - [STRING_MAC_IDX].s = NULL /* DYNAMIC */, + [STRING_MAC_IDX].s = "", [STRING_DATA_IDX].s = "CDC Network Data", [STRING_IAD_IDX].s = "CDC NCM", { } /* end of list */ @@ -390,8 +394,8 @@ struct ndp_parser_opts { .next_fp_index = 2, \ } -static struct ndp_parser_opts ndp16_opts = INIT_NDP16_OPTS; -static struct ndp_parser_opts ndp32_opts = INIT_NDP32_OPTS; +static const struct ndp_parser_opts ndp16_opts = INIT_NDP16_OPTS; +static const struct ndp_parser_opts ndp32_opts = INIT_NDP32_OPTS; static inline void put_ncm(__le16 **p, unsigned size, unsigned val) { @@ -732,8 +736,7 @@ static int ncm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) default: goto invalid; } - ncm->parser_opts->ndp_sign &= ~NCM_NDP_HDR_CRC_MASK; - ncm->parser_opts->ndp_sign |= ndp_hdr_crc; + ncm->ndp_sign = ncm->parser_opts->ndp_sign | ndp_hdr_crc; value = 0; break; } @@ -869,15 +872,19 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, struct sk_buff *skb2; int ncb_len = 0; __le16 *tmp; - int div = ntb_parameters.wNdpInDivisor; - int rem = ntb_parameters.wNdpInPayloadRemainder; + int div; + int rem; int pad; - int ndp_align = ntb_parameters.wNdpInAlignment; + int ndp_align; int ndp_pad; unsigned max_size = ncm->port.fixed_in_len; - struct ndp_parser_opts *opts = ncm->parser_opts; + const struct ndp_parser_opts *opts = ncm->parser_opts; unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; + div = le16_to_cpu(ntb_parameters.wNdpInDivisor); + rem = le16_to_cpu(ntb_parameters.wNdpInPayloadRemainder); + ndp_align = le16_to_cpu(ntb_parameters.wNdpInAlignment); + ncb_len += opts->nth_size; ndp_pad = ALIGN(ncb_len, ndp_align) - ncb_len; ncb_len += ndp_pad; @@ -917,7 +924,7 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, tmp = (void *)tmp + ndp_pad; /* NDP */ - put_unaligned_le32(opts->ndp_sign, tmp); /* dwSignature */ + put_unaligned_le32(ncm->ndp_sign, tmp); /* dwSignature */ tmp += 2; /* wLength */ put_unaligned_le16(ncb_len - opts->nth_size - pad, tmp++); @@ -961,7 +968,7 @@ static int ncm_unwrap_ntb(struct gether *port, struct sk_buff *skb2; int ret = -EINVAL; unsigned max_size = le32_to_cpu(ntb_parameters.dwNtbOutMaxSize); - struct ndp_parser_opts *opts = ncm->parser_opts; + const struct ndp_parser_opts *opts = ncm->parser_opts; unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; int dgram_counter; @@ -998,7 +1005,7 @@ static int ncm_unwrap_ntb(struct gether *port, /* walk through NDP */ tmp = ((void *)skb->data) + index; - if (get_unaligned_le32(tmp) != opts->ndp_sign) { + if (get_unaligned_le32(tmp) != ncm->ndp_sign) { INFO(port->func.config->cdev, "Wrong NDP SIGN\n"); goto err; } @@ -1148,13 +1155,44 @@ static void ncm_close(struct gether *geth) /* ethernet function driver setup/binding */ -static int __init -ncm_bind(struct usb_configuration *c, struct usb_function *f) +static int ncm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_ncm *ncm = func_to_ncm(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_ncm_opts *ncm_opts; + + if (!can_support_ecm(cdev->gadget)) + return -EINVAL; + + ncm_opts = container_of(f->fi, struct f_ncm_opts, func_inst); + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to ncm_opts->bound access + */ + if (!ncm_opts->bound) { + mutex_lock(&ncm_opts->lock); + gether_set_gadget(ncm_opts->net, cdev->gadget); + status = gether_register_netdev(ncm_opts->net); + mutex_unlock(&ncm_opts->lock); + if (status) + return status; + ncm_opts->bound = true; + } + us = usb_gstrings_attach(cdev, ncm_strings, + ARRAY_SIZE(ncm_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + ncm_control_intf.iInterface = us[STRING_CTRL_IDX].id; + ncm_data_nop_intf.iInterface = us[STRING_DATA_IDX].id; + ncm_data_intf.iInterface = us[STRING_DATA_IDX].id; + ecm_desc.iMACAddress = us[STRING_MAC_IDX].id; + ncm_iad_desc.iFunction = us[STRING_IAD_IDX].id; /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); @@ -1208,30 +1246,18 @@ ncm_bind(struct usb_configuration *c, struct usb_function *f) ncm->notify_req->context = ncm; ncm->notify_req->complete = ncm_notify_complete; - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(ncm_fs_function); - if (!f->descriptors) - goto fail; - /* * support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - hs_ncm_in_desc.bEndpointAddress = - fs_ncm_in_desc.bEndpointAddress; - hs_ncm_out_desc.bEndpointAddress = - fs_ncm_out_desc.bEndpointAddress; - hs_ncm_notify_desc.bEndpointAddress = - fs_ncm_notify_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(ncm_hs_function); - if (!f->hs_descriptors) - goto fail; - } + hs_ncm_in_desc.bEndpointAddress = fs_ncm_in_desc.bEndpointAddress; + hs_ncm_out_desc.bEndpointAddress = fs_ncm_out_desc.bEndpointAddress; + hs_ncm_notify_desc.bEndpointAddress = + fs_ncm_notify_desc.bEndpointAddress; + status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, + NULL); /* * NOTE: all that is done without knowing or caring about * the network link ... which is unavailable to this code @@ -1248,9 +1274,7 @@ ncm_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: - if (f->descriptors) - usb_free_descriptors(f->descriptors); - + usb_free_all_descriptors(f); if (ncm->notify_req) { kfree(ncm->notify_req->buf); usb_ep_free_request(ncm->notify, ncm->notify_req); @@ -1259,9 +1283,9 @@ fail: /* we might as well release our claims on endpoints */ if (ncm->notify) ncm->notify->driver_data = NULL; - if (ncm->port.out_ep->desc) + if (ncm->port.out_ep) ncm->port.out_ep->driver_data = NULL; - if (ncm->port.in_ep->desc) + if (ncm->port.in_ep) ncm->port.in_ep->driver_data = NULL; ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); @@ -1269,95 +1293,131 @@ fail: return status; } -static void -ncm_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_ncm_opts *to_f_ncm_opts(struct config_item *item) { - struct f_ncm *ncm = func_to_ncm(f); + return container_of(to_config_group(item), struct f_ncm_opts, + func_inst.group); +} - DBG(c->cdev, "ncm unbind\n"); +/* f_ncm_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(ncm); - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); +/* f_ncm_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(ncm); - kfree(ncm->notify_req->buf); - usb_ep_free_request(ncm->notify, ncm->notify_req); +/* f_ncm_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(ncm); - ncm_string_defs[1].s = NULL; - kfree(ncm); +/* f_ncm_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(ncm); + +/* f_ncm_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(ncm); + +static struct configfs_attribute *ncm_attrs[] = { + &f_ncm_opts_dev_addr.attr, + &f_ncm_opts_host_addr.attr, + &f_ncm_opts_qmult.attr, + &f_ncm_opts_ifname.attr, + NULL, +}; + +static struct config_item_type ncm_func_type = { + .ct_item_ops = &ncm_item_ops, + .ct_attrs = ncm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void ncm_free_inst(struct usb_function_instance *f) +{ + struct f_ncm_opts *opts; + + opts = container_of(f, struct f_ncm_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); } -/** - * ncm_bind_config - add CDC Network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int __init ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +static struct usb_function_instance *ncm_alloc_inst(void) { - struct f_ncm *ncm; - int status; + struct f_ncm_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = ncm_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } - if (!can_support_ecm(c->cdev->gadget) || !ethaddr) - return -EINVAL; + config_group_init_type_name(&opts->func_inst.group, "", &ncm_func_type); - /* maybe allocate device-global string IDs */ - if (ncm_string_defs[0].id == 0) { + return &opts->func_inst; +} - /* control interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ncm_string_defs[STRING_CTRL_IDX].id = status; - ncm_control_intf.iInterface = status; +static void ncm_free(struct usb_function *f) +{ + struct f_ncm *ncm; + struct f_ncm_opts *opts; - /* data interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ncm_string_defs[STRING_DATA_IDX].id = status; - ncm_data_nop_intf.iInterface = status; - ncm_data_intf.iInterface = status; + ncm = func_to_ncm(f); + opts = container_of(f->fi, struct f_ncm_opts, func_inst); + kfree(ncm); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} - /* MAC address */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ncm_string_defs[STRING_MAC_IDX].id = status; - ecm_desc.iMACAddress = status; +static void ncm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_ncm *ncm = func_to_ncm(f); - /* IAD */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - ncm_string_defs[STRING_IAD_IDX].id = status; - ncm_iad_desc.iFunction = status; - } + DBG(c->cdev, "ncm unbind\n"); + + usb_free_all_descriptors(f); + + kfree(ncm->notify_req->buf); + usb_ep_free_request(ncm->notify, ncm->notify_req); +} + +static struct usb_function *ncm_alloc(struct usb_function_instance *fi) +{ + struct f_ncm *ncm; + struct f_ncm_opts *opts; + int status; /* allocate and initialize one new instance */ - ncm = kzalloc(sizeof *ncm, GFP_KERNEL); + ncm = kzalloc(sizeof(*ncm), GFP_KERNEL); if (!ncm) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_ncm_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; /* export host's Ethernet address in CDC format */ - snprintf(ncm->ethaddr, sizeof ncm->ethaddr, - "%02X%02X%02X%02X%02X%02X", - ethaddr[0], ethaddr[1], ethaddr[2], - ethaddr[3], ethaddr[4], ethaddr[5]); - ncm_string_defs[1].s = ncm->ethaddr; + status = gether_get_host_addr_cdc(opts->net, ncm->ethaddr, + sizeof(ncm->ethaddr)); + if (status < 12) { /* strlen("01234567890a") */ + kfree(ncm); + mutex_unlock(&opts->lock); + return ERR_PTR(-EINVAL); + } + ncm_string_defs[STRING_MAC_IDX].s = ncm->ethaddr; spin_lock_init(&ncm->lock); ncm_reset_values(ncm); + ncm->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); ncm->port.is_fixed = true; ncm->port.func.name = "cdc_network"; - ncm->port.func.strings = ncm_strings; /* descriptors are per-instance copies */ ncm->port.func.bind = ncm_bind; ncm->port.func.unbind = ncm_unbind; @@ -1365,14 +1425,14 @@ int __init ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) ncm->port.func.get_alt = ncm_get_alt; ncm->port.func.setup = ncm_setup; ncm->port.func.disable = ncm_disable; + ncm->port.func.free_func = ncm_free; ncm->port.wrap = ncm_wrap_ntb; ncm->port.unwrap = ncm_unwrap_ntb; - status = usb_add_function(c, &ncm->port.func); - if (status) { - ncm_string_defs[1].s = NULL; - kfree(ncm); - } - return status; + return &ncm->port.func; } + +DECLARE_USB_FUNCTION_INIT(ncm, ncm_alloc_inst, ncm_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Yauheni Kaliuta"); diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c index 5f400f66aa9..aebae1853bc 100644 --- a/drivers/usb/gadget/f_obex.c +++ b/drivers/usb/gadget/f_obex.c @@ -72,7 +72,7 @@ static struct usb_gadget_strings *obex_strings[] = { /*-------------------------------------------------------------------------*/ -static struct usb_interface_descriptor obex_control_intf __initdata = { +static struct usb_interface_descriptor obex_control_intf = { .bLength = sizeof(obex_control_intf), .bDescriptorType = USB_DT_INTERFACE, .bInterfaceNumber = 0, @@ -83,7 +83,7 @@ static struct usb_interface_descriptor obex_control_intf __initdata = { .bInterfaceSubClass = USB_CDC_SUBCLASS_OBEX, }; -static struct usb_interface_descriptor obex_data_nop_intf __initdata = { +static struct usb_interface_descriptor obex_data_nop_intf = { .bLength = sizeof(obex_data_nop_intf), .bDescriptorType = USB_DT_INTERFACE, .bInterfaceNumber = 1, @@ -93,7 +93,7 @@ static struct usb_interface_descriptor obex_data_nop_intf __initdata = { .bInterfaceClass = USB_CLASS_CDC_DATA, }; -static struct usb_interface_descriptor obex_data_intf __initdata = { +static struct usb_interface_descriptor obex_data_intf = { .bLength = sizeof(obex_data_intf), .bDescriptorType = USB_DT_INTERFACE, .bInterfaceNumber = 2, @@ -103,14 +103,14 @@ static struct usb_interface_descriptor obex_data_intf __initdata = { .bInterfaceClass = USB_CLASS_CDC_DATA, }; -static struct usb_cdc_header_desc obex_cdc_header_desc __initdata = { +static struct usb_cdc_header_desc obex_cdc_header_desc = { .bLength = sizeof(obex_cdc_header_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, .bcdCDC = cpu_to_le16(0x0120), }; -static struct usb_cdc_union_desc obex_cdc_union_desc __initdata = { +static struct usb_cdc_union_desc obex_cdc_union_desc = { .bLength = sizeof(obex_cdc_union_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_UNION_TYPE, @@ -118,7 +118,7 @@ static struct usb_cdc_union_desc obex_cdc_union_desc __initdata = { .bSlaveInterface0 = 2, }; -static struct usb_cdc_obex_desc obex_desc __initdata = { +static struct usb_cdc_obex_desc obex_desc = { .bLength = sizeof(obex_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_OBEX_TYPE, @@ -127,7 +127,7 @@ static struct usb_cdc_obex_desc obex_desc __initdata = { /* High-Speed Support */ -static struct usb_endpoint_descriptor obex_hs_ep_out_desc __initdata = { +static struct usb_endpoint_descriptor obex_hs_ep_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -136,7 +136,7 @@ static struct usb_endpoint_descriptor obex_hs_ep_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor obex_hs_ep_in_desc __initdata = { +static struct usb_endpoint_descriptor obex_hs_ep_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -145,7 +145,7 @@ static struct usb_endpoint_descriptor obex_hs_ep_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *hs_function[] __initdata = { +static struct usb_descriptor_header *hs_function[] = { (struct usb_descriptor_header *) &obex_control_intf, (struct usb_descriptor_header *) &obex_cdc_header_desc, (struct usb_descriptor_header *) &obex_desc, @@ -160,7 +160,7 @@ static struct usb_descriptor_header *hs_function[] __initdata = { /* Full-Speed Support */ -static struct usb_endpoint_descriptor obex_fs_ep_in_desc __initdata = { +static struct usb_endpoint_descriptor obex_fs_ep_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -168,7 +168,7 @@ static struct usb_endpoint_descriptor obex_fs_ep_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor obex_fs_ep_out_desc __initdata = { +static struct usb_endpoint_descriptor obex_fs_ep_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -176,7 +176,7 @@ static struct usb_endpoint_descriptor obex_fs_ep_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *fs_function[] __initdata = { +static struct usb_descriptor_header *fs_function[] = { (struct usb_descriptor_header *) &obex_control_intf, (struct usb_descriptor_header *) &obex_cdc_header_desc, (struct usb_descriptor_header *) &obex_desc, @@ -290,14 +290,40 @@ static void obex_disconnect(struct gserial *g) /*-------------------------------------------------------------------------*/ -static int __init -obex_bind(struct usb_configuration *c, struct usb_function *f) +/* Some controllers can't support CDC OBEX ... */ +static inline bool can_support_obex(struct usb_configuration *c) +{ + /* Since the first interface is a NOP, we can ignore the + * issue of multi-interface support on most controllers. + * + * Altsettings are mandatory, however... + */ + if (!gadget_supports_altsettings(c->cdev->gadget)) + return false; + + /* everything else is *probably* fine ... */ + return true; +} + +static int obex_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_obex *obex = func_to_obex(f); + struct usb_string *us; int status; struct usb_ep *ep; + if (!can_support_obex(c)) + return -EINVAL; + + us = usb_gstrings_attach(cdev, obex_strings, + ARRAY_SIZE(obex_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + obex_control_intf.iInterface = us[OBEX_CTRL_IDX].id; + obex_data_nop_intf.iInterface = us[OBEX_DATA_IDX].id; + obex_data_intf.iInterface = us[OBEX_DATA_IDX].id; + /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); @@ -319,6 +345,7 @@ obex_bind(struct usb_configuration *c, struct usb_function *f) /* allocate instance-specific endpoints */ + status = -ENODEV; ep = usb_ep_autoconfig(cdev->gadget, &obex_fs_ep_in_desc); if (!ep) goto fail; @@ -331,23 +358,19 @@ obex_bind(struct usb_configuration *c, struct usb_function *f) obex->port.out = ep; ep->driver_data = cdev; /* claim */ - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(fs_function); - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - obex_hs_ep_in_desc.bEndpointAddress = - obex_fs_ep_in_desc.bEndpointAddress; - obex_hs_ep_out_desc.bEndpointAddress = - obex_fs_ep_out_desc.bEndpointAddress; + obex_hs_ep_in_desc.bEndpointAddress = + obex_fs_ep_in_desc.bEndpointAddress; + obex_hs_ep_out_desc.bEndpointAddress = + obex_fs_ep_out_desc.bEndpointAddress; - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(hs_function); - } + status = usb_assign_descriptors(f, fs_function, hs_function, NULL); + if (status) + goto fail; /* Avoid letting this gadget enumerate until the userspace * OBEX server is active. @@ -368,6 +391,7 @@ obex_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: + usb_free_all_descriptors(f); /* we might as well release our claims on endpoints */ if (obex->port.out) obex->port.out->driver_data = NULL; @@ -379,93 +403,131 @@ fail: return status; } -static void -obex_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_serial_opts *to_f_serial_opts(struct config_item *item) { - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - kfree(func_to_obex(f)); + return container_of(to_config_group(item), struct f_serial_opts, + func_inst.group); } -/* Some controllers can't support CDC OBEX ... */ -static inline bool can_support_obex(struct usb_configuration *c) +CONFIGFS_ATTR_STRUCT(f_serial_opts); +static ssize_t f_obex_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) { - /* Since the first interface is a NOP, we can ignore the - * issue of multi-interface support on most controllers. - * - * Altsettings are mandatory, however... - */ - if (!gadget_supports_altsettings(c->cdev->gadget)) - return false; + struct f_serial_opts *opts = to_f_serial_opts(item); + struct f_serial_opts_attribute *f_serial_opts_attr = + container_of(attr, struct f_serial_opts_attribute, attr); + ssize_t ret = 0; - /* everything else is *probably* fine ... */ - return true; + if (f_serial_opts_attr->show) + ret = f_serial_opts_attr->show(opts, page); + + return ret; } -/** - * obex_bind_config - add a CDC OBEX function to a configuration - * @c: the configuration to support the CDC OBEX instance - * @port_num: /dev/ttyGS* port this interface will use - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gserial_setup() with enough ports to - * handle all the ones it binds. Caller is also responsible - * for calling @gserial_cleanup() before module unload. - */ -int __init obex_bind_config(struct usb_configuration *c, u8 port_num) +static void obex_attr_release(struct config_item *item) { - struct f_obex *obex; - int status; + struct f_serial_opts *opts = to_f_serial_opts(item); - if (!can_support_obex(c)) - return -EINVAL; + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations obex_item_ops = { + .release = obex_attr_release, + .show_attribute = f_obex_attr_show, +}; + +static ssize_t f_obex_port_num_show(struct f_serial_opts *opts, char *page) +{ + return sprintf(page, "%u\n", opts->port_num); +} - /* maybe allocate device-global string IDs, and patch descriptors */ - if (obex_string_defs[OBEX_CTRL_IDX].id == 0) { - status = usb_string_id(c->cdev); - if (status < 0) - return status; - obex_string_defs[OBEX_CTRL_IDX].id = status; +static struct f_serial_opts_attribute f_obex_port_num = + __CONFIGFS_ATTR_RO(port_num, f_obex_port_num_show); - obex_control_intf.iInterface = status; +static struct configfs_attribute *acm_attrs[] = { + &f_obex_port_num.attr, + NULL, +}; - status = usb_string_id(c->cdev); - if (status < 0) - return status; - obex_string_defs[OBEX_DATA_IDX].id = status; +static struct config_item_type obex_func_type = { + .ct_item_ops = &obex_item_ops, + .ct_attrs = acm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void obex_free_inst(struct usb_function_instance *f) +{ + struct f_serial_opts *opts; + + opts = container_of(f, struct f_serial_opts, func_inst); + gserial_free_line(opts->port_num); + kfree(opts); +} - obex_data_nop_intf.iInterface = - obex_data_intf.iInterface = status; +static struct usb_function_instance *obex_alloc_inst(void) +{ + struct f_serial_opts *opts; + int ret; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + opts->func_inst.free_func_inst = obex_free_inst; + ret = gserial_alloc_line(&opts->port_num); + if (ret) { + kfree(opts); + return ERR_PTR(ret); } + config_group_init_type_name(&opts->func_inst.group, "", + &obex_func_type); + + return &opts->func_inst; +} + +static void obex_free(struct usb_function *f) +{ + struct f_obex *obex; + + obex = func_to_obex(f); + kfree(obex); +} + +static void obex_unbind(struct usb_configuration *c, struct usb_function *f) +{ + usb_free_all_descriptors(f); +} + +static struct usb_function *obex_alloc(struct usb_function_instance *fi) +{ + struct f_obex *obex; + struct f_serial_opts *opts; /* allocate and initialize one new instance */ - obex = kzalloc(sizeof *obex, GFP_KERNEL); + obex = kzalloc(sizeof(*obex), GFP_KERNEL); if (!obex) - return -ENOMEM; + return ERR_PTR(-ENOMEM); - obex->port_num = port_num; + opts = container_of(fi, struct f_serial_opts, func_inst); + + obex->port_num = opts->port_num; obex->port.connect = obex_connect; obex->port.disconnect = obex_disconnect; obex->port.func.name = "obex"; - obex->port.func.strings = obex_strings; /* descriptors are per-instance copies */ obex->port.func.bind = obex_bind; obex->port.func.unbind = obex_unbind; obex->port.func.set_alt = obex_set_alt; obex->port.func.get_alt = obex_get_alt; obex->port.func.disable = obex_disable; + obex->port.func.free_func = obex_free; - status = usb_add_function(c, &obex->port.func); - if (status) - kfree(obex); - - return status; + return &obex->port.func; } +DECLARE_USB_FUNCTION_INIT(obex, obex_alloc_inst, obex_alloc); MODULE_AUTHOR("Felipe Balbi"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c index 7cdcb63b21f..f2b781773ee 100644 --- a/drivers/usb/gadget/f_phonet.c +++ b/drivers/usb/gadget/f_phonet.c @@ -13,6 +13,7 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/netdevice.h> @@ -25,6 +26,7 @@ #include <linux/usb/composite.h> #include "u_phonet.h" +#include "u_ether.h" #define PN_MEDIA_USB 0x1B #define MAXPACKET 512 @@ -301,7 +303,7 @@ pn_rx_submit(struct f_phonet *fp, struct usb_request *req, gfp_t gfp_flags) struct page *page; int err; - page = alloc_page(gfp_flags); + page = __skb_alloc_page(gfp_flags | __GFP_NOMEMALLOC, NULL); if (!page) return -ENOMEM; @@ -345,7 +347,7 @@ static void pn_rx_complete(struct usb_ep *ep, struct usb_request *req) } skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, - skb->len <= 1, req->actual); + skb->len <= 1, req->actual, PAGE_SIZE); page = NULL; if (req->actual < req->length) { /* Last fragment */ @@ -478,8 +480,7 @@ static void pn_disconnect(struct usb_function *f) /*-------------------------------------------------------------------------*/ -static __init -int pn_bind(struct usb_configuration *c, struct usb_function *f) +static int pn_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct usb_gadget *gadget = cdev->gadget; @@ -487,6 +488,25 @@ int pn_bind(struct usb_configuration *c, struct usb_function *f) struct usb_ep *ep; int status, i; + struct f_phonet_opts *phonet_opts; + + phonet_opts = container_of(f->fi, struct f_phonet_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to phonet_opts->bound access + */ + if (!phonet_opts->bound) { + gphonet_set_gadget(phonet_opts->net, gadget); + status = gphonet_register_netdev(phonet_opts->net); + if (status) + return status; + phonet_opts->bound = true; + } + /* Reserve interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -515,14 +535,14 @@ int pn_bind(struct usb_configuration *c, struct usb_function *f) fp->in_ep = ep; ep->driver_data = fp; /* Claim */ - pn_hs_sink_desc.bEndpointAddress = - pn_fs_sink_desc.bEndpointAddress; - pn_hs_source_desc.bEndpointAddress = - pn_fs_source_desc.bEndpointAddress; + pn_hs_sink_desc.bEndpointAddress = pn_fs_sink_desc.bEndpointAddress; + pn_hs_source_desc.bEndpointAddress = pn_fs_source_desc.bEndpointAddress; /* Do not try to bind Phonet twice... */ - fp->function.descriptors = fs_pn_function; - fp->function.hs_descriptors = hs_pn_function; + status = usb_assign_descriptors(f, fs_pn_function, hs_pn_function, + NULL); + if (status) + goto err; /* Incoming USB requests */ status = -ENOMEM; @@ -531,7 +551,7 @@ int pn_bind(struct usb_configuration *c, struct usb_function *f) req = usb_ep_alloc_request(fp->out_ep, GFP_KERNEL); if (!req) - goto err; + goto err_req; req->complete = pn_rx_complete; fp->out_reqv[i] = req; @@ -540,14 +560,18 @@ int pn_bind(struct usb_configuration *c, struct usb_function *f) /* Outgoing USB requests */ fp->in_req = usb_ep_alloc_request(fp->in_ep, GFP_KERNEL); if (!fp->in_req) - goto err; + goto err_req; INFO(cdev, "USB CDC Phonet function\n"); INFO(cdev, "using %s, OUT %s, IN %s\n", cdev->gadget->name, fp->out_ep->name, fp->in_ep->name); return 0; +err_req: + for (i = 0; i < phonet_rxq_size && fp->out_reqv[i]; i++) + usb_ep_free_request(fp->out_ep, fp->out_reqv[i]); err: + usb_free_all_descriptors(f); if (fp->out_ep) fp->out_ep->driver_data = NULL; if (fp->in_ep) @@ -556,8 +580,101 @@ err: return status; } -static void -pn_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_phonet_opts *to_f_phonet_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_phonet_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_phonet_opts); +static ssize_t f_phonet_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + struct f_phonet_opts *opts = to_f_phonet_opts(item); + struct f_phonet_opts_attribute *f_phonet_opts_attr = + container_of(attr, struct f_phonet_opts_attribute, attr); + ssize_t ret = 0; + + if (f_phonet_opts_attr->show) + ret = f_phonet_opts_attr->show(opts, page); + return ret; +} + +static void phonet_attr_release(struct config_item *item) +{ + struct f_phonet_opts *opts = to_f_phonet_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations phonet_item_ops = { + .release = phonet_attr_release, + .show_attribute = f_phonet_attr_show, +}; + +static ssize_t f_phonet_ifname_show(struct f_phonet_opts *opts, char *page) +{ + return gether_get_ifname(opts->net, page, PAGE_SIZE); +} + +static struct f_phonet_opts_attribute f_phonet_ifname = + __CONFIGFS_ATTR_RO(ifname, f_phonet_ifname_show); + +static struct configfs_attribute *phonet_attrs[] = { + &f_phonet_ifname.attr, + NULL, +}; + +static struct config_item_type phonet_func_type = { + .ct_item_ops = &phonet_item_ops, + .ct_attrs = phonet_attrs, + .ct_owner = THIS_MODULE, +}; + +static void phonet_free_inst(struct usb_function_instance *f) +{ + struct f_phonet_opts *opts; + + opts = container_of(f, struct f_phonet_opts, func_inst); + if (opts->bound) + gphonet_cleanup(opts->net); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *phonet_alloc_inst(void) +{ + struct f_phonet_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + opts->func_inst.free_func_inst = phonet_free_inst; + opts->net = gphonet_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + + config_group_init_type_name(&opts->func_inst.group, "", + &phonet_func_type); + + return &opts->func_inst; +} + +static void phonet_free(struct usb_function *f) +{ + struct f_phonet *phonet; + + phonet = func_to_pn(f); + kfree(phonet); +} + +static void pn_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_phonet *fp = func_to_pn(f); int i; @@ -569,61 +686,73 @@ pn_unbind(struct usb_configuration *c, struct usb_function *f) if (fp->out_reqv[i]) usb_ep_free_request(fp->out_ep, fp->out_reqv[i]); - kfree(fp); + usb_free_all_descriptors(f); } -/*-------------------------------------------------------------------------*/ - -static struct net_device *dev; - -int __init phonet_bind_config(struct usb_configuration *c) +static struct usb_function *phonet_alloc(struct usb_function_instance *fi) { struct f_phonet *fp; - int err, size; + struct f_phonet_opts *opts; + int size; size = sizeof(*fp) + (phonet_rxq_size * sizeof(struct usb_request *)); fp = kzalloc(size, GFP_KERNEL); if (!fp) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_phonet_opts, func_inst); - fp->dev = dev; + fp->dev = opts->net; fp->function.name = "phonet"; fp->function.bind = pn_bind; fp->function.unbind = pn_unbind; fp->function.set_alt = pn_set_alt; fp->function.get_alt = pn_get_alt; fp->function.disable = pn_disconnect; + fp->function.free_func = phonet_free; spin_lock_init(&fp->rx.lock); - err = usb_add_function(c, &fp->function); - if (err) - kfree(fp); - return err; + return &fp->function; } -int __init gphonet_setup(struct usb_gadget *gadget) +struct net_device *gphonet_setup_default(void) { + struct net_device *dev; struct phonet_port *port; - int err; /* Create net device */ - BUG_ON(dev); dev = alloc_netdev(sizeof(*port), "upnlink%d", pn_net_setup); if (!dev) - return -ENOMEM; + return ERR_PTR(-ENOMEM); port = netdev_priv(dev); spin_lock_init(&port->lock); netif_carrier_off(dev); - SET_NETDEV_DEV(dev, &gadget->dev); - err = register_netdev(dev); - if (err) - free_netdev(dev); - return err; + return dev; +} + +void gphonet_set_gadget(struct net_device *net, struct usb_gadget *g) +{ + SET_NETDEV_DEV(net, &g->dev); } -void gphonet_cleanup(void) +int gphonet_register_netdev(struct net_device *net) +{ + int status; + + status = register_netdev(net); + if (status) + free_netdev(net); + + return status; +} + +void gphonet_cleanup(struct net_device *dev) { unregister_netdev(dev); } + +DECLARE_USB_FUNCTION_INIT(phonet, phonet_alloc_inst, phonet_alloc); +MODULE_AUTHOR("Rémi Denis-Courmont"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 704d1d94f72..9c41e9515b8 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -5,7 +5,7 @@ * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger * Copyright (C) 2008 Nokia Corporation * Copyright (C) 2009 Samsung Electronics - * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) + * Author: Michal Nazarewicz (mina86@mina86.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -17,14 +17,17 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/atomic.h> #include "u_ether.h" +#include "u_ether_configfs.h" +#include "u_rndis.h" #include "rndis.h" - +#include "configfs.h" /* * This function is an RNDIS Ethernet port -- a Microsoft protocol that's @@ -71,6 +74,8 @@ struct f_rndis { struct gether port; u8 ctrl_id, data_id; u8 ethaddr[ETH_ALEN]; + u32 vendorID; + const char *manufacturer; int config; struct usb_ep *notify; @@ -99,7 +104,7 @@ static unsigned int bitrate(struct usb_gadget *g) /* */ -#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ +#define RNDIS_STATUS_INTERVAL_MS 32 #define STATUS_BYTECOUNT 8 /* 8 bytes data */ @@ -188,7 +193,7 @@ static struct usb_endpoint_descriptor fs_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT), - .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, + .bInterval = RNDIS_STATUS_INTERVAL_MS, }; static struct usb_endpoint_descriptor fs_in_desc = { @@ -234,7 +239,7 @@ static struct usb_endpoint_descriptor hs_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, + .bInterval = USB_MS_TO_HS_INTERVAL(RNDIS_STATUS_INTERVAL_MS) }; static struct usb_endpoint_descriptor hs_in_desc = { @@ -282,7 +287,7 @@ static struct usb_endpoint_descriptor ss_notify_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, + .bInterval = USB_MS_TO_HS_INTERVAL(RNDIS_STATUS_INTERVAL_MS) }; static struct usb_ss_ep_comp_descriptor ss_intr_comp_desc = { @@ -373,7 +378,7 @@ static struct sk_buff *rndis_add_header(struct gether *port, if (skb2) rndis_add_hdr(skb2); - dev_kfree_skb_any(skb); + dev_kfree_skb(skb); return skb2; } @@ -445,14 +450,13 @@ static void rndis_response_complete(struct usb_ep *ep, struct usb_request *req) static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req) { struct f_rndis *rndis = req->context; - struct usb_composite_dev *cdev = rndis->port.func.config->cdev; int status; /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ // spin_lock(&dev->lock); status = rndis_msg_parser(rndis->config, (u8 *) req->buf); if (status < 0) - ERROR(cdev, "RNDIS command error %d, %d/%d\n", + pr_err("RNDIS command error %d, %d/%d\n", status, req->actual, req->length); // spin_unlock(&dev->lock); } @@ -500,6 +504,7 @@ rndis_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) if (buf) { memcpy(req->buf, buf, n); req->complete = rndis_response_complete; + req->context = rndis; rndis_free_response(rndis->config, buf); value = n; } @@ -636,7 +641,7 @@ static void rndis_open(struct gether *geth) DBG(cdev, "%s\n", __func__); - rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, + rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, bitrate(cdev->gadget) / 100); rndis_signal_connect(rndis->config); } @@ -647,12 +652,19 @@ static void rndis_close(struct gether *geth) DBG(geth->func.config->cdev, "%s\n", __func__); - rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, 0); + rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0); rndis_signal_disconnect(rndis->config); } /*-------------------------------------------------------------------------*/ +/* Some controllers can't support RNDIS ... */ +static inline bool can_support_rndis(struct usb_configuration *c) +{ + /* everything else is *presumably* fine */ + return true; +} + /* ethernet function driver setup/binding */ static int @@ -660,9 +672,51 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_rndis *rndis = func_to_rndis(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_rndis_opts *rndis_opts; + + if (!can_support_rndis(c)) + return -EINVAL; + + rndis_opts = container_of(f->fi, struct f_rndis_opts, func_inst); + + if (cdev->use_os_string) { + f->os_desc_table = kzalloc(sizeof(*f->os_desc_table), + GFP_KERNEL); + if (!f->os_desc_table) + return -ENOMEM; + f->os_desc_n = 1; + f->os_desc_table[0].os_desc = &rndis_opts->rndis_os_desc; + } + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to rndis_opts->bound access + */ + if (!rndis_opts->bound) { + gether_set_gadget(rndis_opts->net, cdev->gadget); + status = gether_register_netdev(rndis_opts->net); + if (status) + goto fail; + rndis_opts->bound = true; + } + + us = usb_gstrings_attach(cdev, rndis_strings, + ARRAY_SIZE(rndis_string_defs)); + if (IS_ERR(us)) { + status = PTR_ERR(us); + goto fail; + } + rndis_control_intf.iInterface = us[0].id; + rndis_data_intf.iInterface = us[1].id; + rndis_iad_descriptor.iFunction = us[2].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -719,60 +773,33 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis->notify_req->context = rndis; rndis->notify_req->complete = rndis_response_complete; - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(eth_fs_function); - if (!f->descriptors) - goto fail; - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - hs_in_desc.bEndpointAddress = - fs_in_desc.bEndpointAddress; - hs_out_desc.bEndpointAddress = - fs_out_desc.bEndpointAddress; - hs_notify_desc.bEndpointAddress = - fs_notify_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(eth_hs_function); - if (!f->hs_descriptors) - goto fail; - } + hs_in_desc.bEndpointAddress = fs_in_desc.bEndpointAddress; + hs_out_desc.bEndpointAddress = fs_out_desc.bEndpointAddress; + hs_notify_desc.bEndpointAddress = fs_notify_desc.bEndpointAddress; - if (gadget_is_superspeed(c->cdev->gadget)) { - ss_in_desc.bEndpointAddress = - fs_in_desc.bEndpointAddress; - ss_out_desc.bEndpointAddress = - fs_out_desc.bEndpointAddress; - ss_notify_desc.bEndpointAddress = - fs_notify_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->ss_descriptors = usb_copy_descriptors(eth_ss_function); - if (!f->ss_descriptors) - goto fail; - } + ss_in_desc.bEndpointAddress = fs_in_desc.bEndpointAddress; + ss_out_desc.bEndpointAddress = fs_out_desc.bEndpointAddress; + ss_notify_desc.bEndpointAddress = fs_notify_desc.bEndpointAddress; + + status = usb_assign_descriptors(f, eth_fs_function, eth_hs_function, + eth_ss_function); + if (status) + goto fail; rndis->port.open = rndis_open; rndis->port.close = rndis_close; - status = rndis_register(rndis_response_available, rndis); - if (status < 0) - goto fail; - rndis->config = status; - - rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, 0); + rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0); rndis_set_host_mac(rndis->config, rndis->ethaddr); -#if 0 -// FIXME - if (rndis_set_param_vendor(rndis->config, vendorID, - manufacturer)) - goto fail0; -#endif + if (rndis->manufacturer && rndis->vendorID && + rndis_set_param_vendor(rndis->config, rndis->vendorID, + rndis->manufacturer)) + goto fail; /* NOTE: all that is done without knowing or caring about * the network link ... which is unavailable to this code @@ -787,12 +814,9 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: - if (gadget_is_superspeed(c->cdev->gadget) && f->ss_descriptors) - usb_free_descriptors(f->ss_descriptors); - if (gadget_is_dualspeed(c->cdev->gadget) && f->hs_descriptors) - usb_free_descriptors(f->hs_descriptors); - if (f->descriptors) - usb_free_descriptors(f->descriptors); + kfree(f->os_desc_table); + f->os_desc_n = 0; + usb_free_all_descriptors(f); if (rndis->notify_req) { kfree(rndis->notify_req->buf); @@ -802,9 +826,9 @@ fail: /* we might as well release our claims on endpoints */ if (rndis->notify) rndis->notify->driver_data = NULL; - if (rndis->port.out_ep->desc) + if (rndis->port.out_ep) rndis->port.out_ep->driver_data = NULL; - if (rndis->port.in_ep->desc) + if (rndis->port.in_ep) rndis->port.in_ep->driver_data = NULL; ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); @@ -812,92 +836,149 @@ fail: return status; } -static void -rndis_unbind(struct usb_configuration *c, struct usb_function *f) +void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net) { - struct f_rndis *rndis = func_to_rndis(f); + struct f_rndis_opts *opts; - rndis_deregister(rndis->config); - rndis_exit(); + opts = container_of(f, struct f_rndis_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + opts->borrowed_net = opts->bound = true; + opts->net = net; +} +EXPORT_SYMBOL_GPL(rndis_borrow_net); - if (gadget_is_superspeed(c->cdev->gadget)) - usb_free_descriptors(f->ss_descriptors); - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); +static inline struct f_rndis_opts *to_f_rndis_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_rndis_opts, + func_inst.group); +} - kfree(rndis->notify_req->buf); - usb_ep_free_request(rndis->notify, rndis->notify_req); +/* f_rndis_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(rndis); - kfree(rndis); +/* f_rndis_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(rndis); + +/* f_rndis_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(rndis); + +/* f_rndis_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(rndis); + +/* f_rndis_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(rndis); + +static struct configfs_attribute *rndis_attrs[] = { + &f_rndis_opts_dev_addr.attr, + &f_rndis_opts_host_addr.attr, + &f_rndis_opts_qmult.attr, + &f_rndis_opts_ifname.attr, + NULL, +}; + +static struct config_item_type rndis_func_type = { + .ct_item_ops = &rndis_item_ops, + .ct_attrs = rndis_attrs, + .ct_owner = THIS_MODULE, +}; + +static void rndis_free_inst(struct usb_function_instance *f) +{ + struct f_rndis_opts *opts; + + opts = container_of(f, struct f_rndis_opts, func_inst); + if (!opts->borrowed_net) { + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + } + + kfree(opts->rndis_os_desc.group.default_groups); /* single VLA chunk */ + kfree(opts); } -/* Some controllers can't support RNDIS ... */ -static inline bool can_support_rndis(struct usb_configuration *c) +static struct usb_function_instance *rndis_alloc_inst(void) { - /* everything else is *presumably* fine */ - return true; + struct f_rndis_opts *opts; + struct usb_os_desc *descs[1]; + char *names[1]; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + opts->rndis_os_desc.ext_compat_id = opts->rndis_ext_compat_id; + + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = rndis_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); + } + INIT_LIST_HEAD(&opts->rndis_os_desc.ext_prop); + + descs[0] = &opts->rndis_os_desc; + names[0] = "rndis"; + usb_os_desc_prepare_interf_dir(&opts->func_inst.group, 1, descs, + names, THIS_MODULE); + config_group_init_type_name(&opts->func_inst.group, "", + &rndis_func_type); + + return &opts->func_inst; } -/** - * rndis_bind_config - add RNDIS network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int -rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +static void rndis_free(struct usb_function *f) { - struct f_rndis *rndis; - int status; + struct f_rndis *rndis; + struct f_rndis_opts *opts; - if (!can_support_rndis(c) || !ethaddr) - return -EINVAL; + rndis = func_to_rndis(f); + rndis_deregister(rndis->config); + opts = container_of(f->fi, struct f_rndis_opts, func_inst); + kfree(rndis); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); +} - /* maybe allocate device-global string IDs */ - if (rndis_string_defs[0].id == 0) { - - /* ... and setup RNDIS itself */ - status = rndis_init(); - if (status < 0) - return status; - - /* control interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - rndis_string_defs[0].id = status; - rndis_control_intf.iInterface = status; - - /* data interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - rndis_string_defs[1].id = status; - rndis_data_intf.iInterface = status; - - /* IAD iFunction label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - rndis_string_defs[2].id = status; - rndis_iad_descriptor.iFunction = status; - } +static void rndis_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_rndis *rndis = func_to_rndis(f); + + kfree(f->os_desc_table); + f->os_desc_n = 0; + usb_free_all_descriptors(f); + + kfree(rndis->notify_req->buf); + usb_ep_free_request(rndis->notify, rndis->notify_req); +} + +static struct usb_function *rndis_alloc(struct usb_function_instance *fi) +{ + struct f_rndis *rndis; + struct f_rndis_opts *opts; + int status; /* allocate and initialize one new instance */ - status = -ENOMEM; - rndis = kzalloc(sizeof *rndis, GFP_KERNEL); + rndis = kzalloc(sizeof(*rndis), GFP_KERNEL); if (!rndis) - goto fail; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_rndis_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; - memcpy(rndis->ethaddr, ethaddr, ETH_ALEN); + gether_get_host_addr_u8(opts->net, rndis->ethaddr); + rndis->vendorID = opts->vendor_id; + rndis->manufacturer = opts->manufacturer; + rndis->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); /* RNDIS activates when the host changes this filter */ rndis->port.cdc_filter = 0; @@ -907,19 +988,44 @@ rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) rndis->port.unwrap = rndis_rm_hdr; rndis->port.func.name = "rndis"; - rndis->port.func.strings = rndis_strings; /* descriptors are per-instance copies */ rndis->port.func.bind = rndis_bind; rndis->port.func.unbind = rndis_unbind; rndis->port.func.set_alt = rndis_set_alt; rndis->port.func.setup = rndis_setup; rndis->port.func.disable = rndis_disable; + rndis->port.func.free_func = rndis_free; - status = usb_add_function(c, &rndis->port.func); - if (status) { + status = rndis_register(rndis_response_available, rndis); + if (status < 0) { kfree(rndis); -fail: - rndis_exit(); + return ERR_PTR(status); } - return status; + rndis->config = status; + + return &rndis->port.func; } + +DECLARE_USB_FUNCTION(rndis, rndis_alloc_inst, rndis_alloc); + +static int __init rndis_mod_init(void) +{ + int ret; + + ret = rndis_init(); + if (ret) + return ret; + + return usb_function_register(&rndisusb_func); +} +module_init(rndis_mod_init); + +static void __exit rndis_mod_exit(void) +{ + usb_function_unregister(&rndisusb_func); + rndis_exit(); +} +module_exit(rndis_mod_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c index cf33a8d0fd5..9ecbcbf36a4 100644 --- a/drivers/usb/gadget/f_serial.c +++ b/drivers/usb/gadget/f_serial.c @@ -12,6 +12,7 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include "u_serial.h" @@ -42,7 +43,7 @@ static inline struct f_gser *func_to_gser(struct usb_function *f) /* interface descriptor: */ -static struct usb_interface_descriptor gser_interface_desc __initdata = { +static struct usb_interface_descriptor gser_interface_desc = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, /* .bInterfaceNumber = DYNAMIC */ @@ -55,21 +56,21 @@ static struct usb_interface_descriptor gser_interface_desc __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor gser_fs_in_desc __initdata = { +static struct usb_endpoint_descriptor gser_fs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor gser_fs_out_desc __initdata = { +static struct usb_endpoint_descriptor gser_fs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *gser_fs_function[] __initdata = { +static struct usb_descriptor_header *gser_fs_function[] = { (struct usb_descriptor_header *) &gser_interface_desc, (struct usb_descriptor_header *) &gser_fs_in_desc, (struct usb_descriptor_header *) &gser_fs_out_desc, @@ -78,27 +79,55 @@ static struct usb_descriptor_header *gser_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor gser_hs_in_desc __initdata = { +static struct usb_endpoint_descriptor gser_hs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor gser_hs_out_desc __initdata = { +static struct usb_endpoint_descriptor gser_hs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *gser_hs_function[] __initdata = { +static struct usb_descriptor_header *gser_hs_function[] = { (struct usb_descriptor_header *) &gser_interface_desc, (struct usb_descriptor_header *) &gser_hs_in_desc, (struct usb_descriptor_header *) &gser_hs_out_desc, NULL, }; +static struct usb_endpoint_descriptor gser_ss_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_endpoint_descriptor gser_ss_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor gser_ss_bulk_comp_desc = { + .bLength = sizeof gser_ss_bulk_comp_desc, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_descriptor_header *gser_ss_function[] = { + (struct usb_descriptor_header *) &gser_interface_desc, + (struct usb_descriptor_header *) &gser_ss_in_desc, + (struct usb_descriptor_header *) &gser_ss_bulk_comp_desc, + (struct usb_descriptor_header *) &gser_ss_out_desc, + (struct usb_descriptor_header *) &gser_ss_bulk_comp_desc, + NULL, +}; + /* string descriptors: */ static struct usb_string gser_string_defs[] = { @@ -155,14 +184,25 @@ static void gser_disable(struct usb_function *f) /* serial function driver setup/binding */ -static int __init -gser_bind(struct usb_configuration *c, struct usb_function *f) +static int gser_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_gser *gser = func_to_gser(f); int status; struct usb_ep *ep; + /* REVISIT might want instance-specific strings to help + * distinguish instances ... + */ + + /* maybe allocate device-global string ID */ + if (gser_string_defs[0].id == 0) { + status = usb_string_id(c->cdev); + if (status < 0) + return status; + gser_string_defs[0].id = status; + } + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -185,25 +225,23 @@ gser_bind(struct usb_configuration *c, struct usb_function *f) gser->port.out = ep; ep->driver_data = cdev; /* claim */ - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(gser_fs_function); - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - gser_hs_in_desc.bEndpointAddress = - gser_fs_in_desc.bEndpointAddress; - gser_hs_out_desc.bEndpointAddress = - gser_fs_out_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(gser_hs_function); - } + gser_hs_in_desc.bEndpointAddress = gser_fs_in_desc.bEndpointAddress; + gser_hs_out_desc.bEndpointAddress = gser_fs_out_desc.bEndpointAddress; + gser_ss_in_desc.bEndpointAddress = gser_fs_in_desc.bEndpointAddress; + gser_ss_out_desc.bEndpointAddress = gser_fs_out_desc.bEndpointAddress; + + status = usb_assign_descriptors(f, gser_fs_function, gser_hs_function, + gser_ss_function); + if (status) + goto fail; DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n", gser->port_num, + gadget_is_superspeed(c->cdev->gadget) ? "super" : gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", gser->port.in->name, gser->port.out->name); return 0; @@ -220,50 +258,115 @@ fail: return status; } -static void -gser_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_serial_opts *to_f_serial_opts(struct config_item *item) { - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - kfree(func_to_gser(f)); + return container_of(to_config_group(item), struct f_serial_opts, + func_inst.group); } -/** - * gser_bind_config - add a generic serial function to a configuration - * @c: the configuration to support the serial instance - * @port_num: /dev/ttyGS* port this interface will use - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gserial_setup() with enough ports to - * handle all the ones it binds. Caller is also responsible - * for calling @gserial_cleanup() before module unload. - */ -int __init gser_bind_config(struct usb_configuration *c, u8 port_num) +CONFIGFS_ATTR_STRUCT(f_serial_opts); +static ssize_t f_serial_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) { - struct f_gser *gser; - int status; + struct f_serial_opts *opts = to_f_serial_opts(item); + struct f_serial_opts_attribute *f_serial_opts_attr = + container_of(attr, struct f_serial_opts_attribute, attr); + ssize_t ret = 0; - /* REVISIT might want instance-specific strings to help - * distinguish instances ... - */ + if (f_serial_opts_attr->show) + ret = f_serial_opts_attr->show(opts, page); - /* maybe allocate device-global string ID */ - if (gser_string_defs[0].id == 0) { - status = usb_string_id(c->cdev); - if (status < 0) - return status; - gser_string_defs[0].id = status; + return ret; +} + +static void serial_attr_release(struct config_item *item) +{ + struct f_serial_opts *opts = to_f_serial_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations serial_item_ops = { + .release = serial_attr_release, + .show_attribute = f_serial_attr_show, +}; + +static ssize_t f_serial_port_num_show(struct f_serial_opts *opts, char *page) +{ + return sprintf(page, "%u\n", opts->port_num); +} + +static struct f_serial_opts_attribute f_serial_port_num = + __CONFIGFS_ATTR_RO(port_num, f_serial_port_num_show); + +static struct configfs_attribute *acm_attrs[] = { + &f_serial_port_num.attr, + NULL, +}; + +static struct config_item_type serial_func_type = { + .ct_item_ops = &serial_item_ops, + .ct_attrs = acm_attrs, + .ct_owner = THIS_MODULE, +}; + +static void gser_free_inst(struct usb_function_instance *f) +{ + struct f_serial_opts *opts; + + opts = container_of(f, struct f_serial_opts, func_inst); + gserial_free_line(opts->port_num); + kfree(opts); +} + +static struct usb_function_instance *gser_alloc_inst(void) +{ + struct f_serial_opts *opts; + int ret; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + opts->func_inst.free_func_inst = gser_free_inst; + ret = gserial_alloc_line(&opts->port_num); + if (ret) { + kfree(opts); + return ERR_PTR(ret); } + config_group_init_type_name(&opts->func_inst.group, "", + &serial_func_type); + + return &opts->func_inst; +} + +static void gser_free(struct usb_function *f) +{ + struct f_gser *serial; + + serial = func_to_gser(f); + kfree(serial); +} + +static void gser_unbind(struct usb_configuration *c, struct usb_function *f) +{ + usb_free_all_descriptors(f); +} + +static struct usb_function *gser_alloc(struct usb_function_instance *fi) +{ + struct f_gser *gser; + struct f_serial_opts *opts; /* allocate and initialize one new instance */ - gser = kzalloc(sizeof *gser, GFP_KERNEL); + gser = kzalloc(sizeof(*gser), GFP_KERNEL); if (!gser) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_serial_opts, func_inst); - gser->port_num = port_num; + gser->port_num = opts->port_num; gser->port.func.name = "gser"; gser->port.func.strings = gser_strings; @@ -271,9 +374,12 @@ int __init gser_bind_config(struct usb_configuration *c, u8 port_num) gser->port.func.unbind = gser_unbind; gser->port.func.set_alt = gser_set_alt; gser->port.func.disable = gser_disable; + gser->port.func.free_func = gser_free; - status = usb_add_function(c, &gser->port.func); - if (status) - kfree(gser); - return status; + return &gser->port.func; } + +DECLARE_USB_FUNCTION_INIT(gser, gser_alloc_inst, gser_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Al Borchers"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index 7aa7ac82c02..d3cd52db78f 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -16,10 +16,12 @@ #include <linux/kernel.h> #include <linux/device.h> #include <linux/module.h> +#include <linux/usb/composite.h> +#include <linux/err.h> #include "g_zero.h" #include "gadget_chips.h" - +#include "u_f.h" /* * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral @@ -51,6 +53,9 @@ struct f_sourcesink { struct usb_ep *in_ep; struct usb_ep *out_ep; + struct usb_ep *iso_in_ep; + struct usb_ep *iso_out_ep; + int cur_alt; }; static inline struct f_sourcesink *func_to_ss(struct usb_function *f) @@ -59,18 +64,32 @@ static inline struct f_sourcesink *func_to_ss(struct usb_function *f) } static unsigned pattern; -module_param(pattern, uint, 0); -MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63 "); +static unsigned isoc_interval; +static unsigned isoc_maxpacket; +static unsigned isoc_mult; +static unsigned isoc_maxburst; +static unsigned buflen; /*-------------------------------------------------------------------------*/ -static struct usb_interface_descriptor source_sink_intf = { - .bLength = sizeof source_sink_intf, +static struct usb_interface_descriptor source_sink_intf_alt0 = { + .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 0, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - /* .iInterface = DYNAMIC */ + /* .iInterface = DYNAMIC */ +}; + +static struct usb_interface_descriptor source_sink_intf_alt1 = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 1, + .bNumEndpoints = 4, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + /* .iInterface = DYNAMIC */ }; /* full speed support: */ @@ -91,10 +110,36 @@ static struct usb_endpoint_descriptor fs_sink_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; +static struct usb_endpoint_descriptor fs_iso_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1023), + .bInterval = 4, +}; + +static struct usb_endpoint_descriptor fs_iso_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1023), + .bInterval = 4, +}; + static struct usb_descriptor_header *fs_source_sink_descs[] = { - (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &source_sink_intf_alt0, (struct usb_descriptor_header *) &fs_sink_desc, (struct usb_descriptor_header *) &fs_source_desc, + (struct usb_descriptor_header *) &source_sink_intf_alt1, +#define FS_ALT_IFC_1_OFFSET 3 + (struct usb_descriptor_header *) &fs_sink_desc, + (struct usb_descriptor_header *) &fs_source_desc, + (struct usb_descriptor_header *) &fs_iso_sink_desc, + (struct usb_descriptor_header *) &fs_iso_source_desc, NULL, }; @@ -116,10 +161,34 @@ static struct usb_endpoint_descriptor hs_sink_desc = { .wMaxPacketSize = cpu_to_le16(512), }; +static struct usb_endpoint_descriptor hs_iso_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +static struct usb_endpoint_descriptor hs_iso_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + static struct usb_descriptor_header *hs_source_sink_descs[] = { - (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &source_sink_intf_alt0, + (struct usb_descriptor_header *) &hs_source_desc, + (struct usb_descriptor_header *) &hs_sink_desc, + (struct usb_descriptor_header *) &source_sink_intf_alt1, +#define HS_ALT_IFC_1_OFFSET 3 (struct usb_descriptor_header *) &hs_source_desc, (struct usb_descriptor_header *) &hs_sink_desc, + (struct usb_descriptor_header *) &hs_iso_source_desc, + (struct usb_descriptor_header *) &hs_iso_sink_desc, NULL, }; @@ -133,9 +202,10 @@ static struct usb_endpoint_descriptor ss_source_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_source_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_source_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, .bmAttributes = 0, .wBytesPerInterval = 0, @@ -149,20 +219,67 @@ static struct usb_endpoint_descriptor ss_sink_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_sink_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_sink_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, .bmAttributes = 0, .wBytesPerInterval = 0, }; +static struct usb_endpoint_descriptor ss_iso_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +static struct usb_ss_ep_comp_descriptor ss_iso_source_comp_desc = { + .bLength = USB_DT_SS_EP_COMP_SIZE, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = cpu_to_le16(1024), +}; + +static struct usb_endpoint_descriptor ss_iso_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +static struct usb_ss_ep_comp_descriptor ss_iso_sink_comp_desc = { + .bLength = USB_DT_SS_EP_COMP_SIZE, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = cpu_to_le16(1024), +}; + static struct usb_descriptor_header *ss_source_sink_descs[] = { - (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &source_sink_intf_alt0, + (struct usb_descriptor_header *) &ss_source_desc, + (struct usb_descriptor_header *) &ss_source_comp_desc, + (struct usb_descriptor_header *) &ss_sink_desc, + (struct usb_descriptor_header *) &ss_sink_comp_desc, + (struct usb_descriptor_header *) &source_sink_intf_alt1, +#define SS_ALT_IFC_1_OFFSET 5 (struct usb_descriptor_header *) &ss_source_desc, (struct usb_descriptor_header *) &ss_source_comp_desc, (struct usb_descriptor_header *) &ss_sink_desc, (struct usb_descriptor_header *) &ss_sink_comp_desc, + (struct usb_descriptor_header *) &ss_iso_source_desc, + (struct usb_descriptor_header *) &ss_iso_source_comp_desc, + (struct usb_descriptor_header *) &ss_iso_sink_desc, + (struct usb_descriptor_header *) &ss_iso_sink_comp_desc, NULL, }; @@ -185,20 +302,58 @@ static struct usb_gadget_strings *sourcesink_strings[] = { /*-------------------------------------------------------------------------*/ -static int __init +static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len) +{ + return alloc_ep_req(ep, len, buflen); +} + +void free_ep_req(struct usb_ep *ep, struct usb_request *req) +{ + kfree(req->buf); + usb_ep_free_request(ep, req); +} + +static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) +{ + int value; + + if (ep->driver_data) { + value = usb_ep_disable(ep); + if (value < 0) + DBG(cdev, "disable %s --> %d\n", + ep->name, value); + ep->driver_data = NULL; + } +} + +void disable_endpoints(struct usb_composite_dev *cdev, + struct usb_ep *in, struct usb_ep *out, + struct usb_ep *iso_in, struct usb_ep *iso_out) +{ + disable_ep(cdev, in); + disable_ep(cdev, out); + if (iso_in) + disable_ep(cdev, iso_in); + if (iso_out) + disable_ep(cdev, iso_out); +} + +static int sourcesink_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_sourcesink *ss = func_to_ss(f); int id; + int ret; /* allocate interface ID(s) */ id = usb_interface_id(c, f); if (id < 0) return id; - source_sink_intf.bInterfaceNumber = id; + source_sink_intf_alt0.bInterfaceNumber = id; + source_sink_intf_alt1.bInterfaceNumber = id; - /* allocate endpoints */ + /* allocate bulk endpoints */ ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc); if (!ss->in_ep) { autoconf_fail: @@ -213,34 +368,124 @@ autoconf_fail: goto autoconf_fail; ss->out_ep->driver_data = cdev; /* claim */ - /* support high speed hardware */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - hs_source_desc.bEndpointAddress = - fs_source_desc.bEndpointAddress; - hs_sink_desc.bEndpointAddress = - fs_sink_desc.bEndpointAddress; - f->hs_descriptors = hs_source_sink_descs; + /* sanity check the isoc module parameters */ + if (isoc_interval < 1) + isoc_interval = 1; + if (isoc_interval > 16) + isoc_interval = 16; + if (isoc_mult > 2) + isoc_mult = 2; + if (isoc_maxburst > 15) + isoc_maxburst = 15; + + /* fill in the FS isoc descriptors from the module parameters */ + fs_iso_source_desc.wMaxPacketSize = isoc_maxpacket > 1023 ? + 1023 : isoc_maxpacket; + fs_iso_source_desc.bInterval = isoc_interval; + fs_iso_sink_desc.wMaxPacketSize = isoc_maxpacket > 1023 ? + 1023 : isoc_maxpacket; + fs_iso_sink_desc.bInterval = isoc_interval; + + /* allocate iso endpoints */ + ss->iso_in_ep = usb_ep_autoconfig(cdev->gadget, &fs_iso_source_desc); + if (!ss->iso_in_ep) + goto no_iso; + ss->iso_in_ep->driver_data = cdev; /* claim */ + + ss->iso_out_ep = usb_ep_autoconfig(cdev->gadget, &fs_iso_sink_desc); + if (ss->iso_out_ep) { + ss->iso_out_ep->driver_data = cdev; /* claim */ + } else { + ss->iso_in_ep->driver_data = NULL; + ss->iso_in_ep = NULL; +no_iso: + /* + * We still want to work even if the UDC doesn't have isoc + * endpoints, so null out the alt interface that contains + * them and continue. + */ + fs_source_sink_descs[FS_ALT_IFC_1_OFFSET] = NULL; + hs_source_sink_descs[HS_ALT_IFC_1_OFFSET] = NULL; + ss_source_sink_descs[SS_ALT_IFC_1_OFFSET] = NULL; } + if (isoc_maxpacket > 1024) + isoc_maxpacket = 1024; + + /* support high speed hardware */ + hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress; + hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress; + + /* + * Fill in the HS isoc descriptors from the module parameters. + * We assume that the user knows what they are doing and won't + * give parameters that their UDC doesn't support. + */ + hs_iso_source_desc.wMaxPacketSize = isoc_maxpacket; + hs_iso_source_desc.wMaxPacketSize |= isoc_mult << 11; + hs_iso_source_desc.bInterval = isoc_interval; + hs_iso_source_desc.bEndpointAddress = + fs_iso_source_desc.bEndpointAddress; + + hs_iso_sink_desc.wMaxPacketSize = isoc_maxpacket; + hs_iso_sink_desc.wMaxPacketSize |= isoc_mult << 11; + hs_iso_sink_desc.bInterval = isoc_interval; + hs_iso_sink_desc.bEndpointAddress = fs_iso_sink_desc.bEndpointAddress; + /* support super speed hardware */ - if (gadget_is_superspeed(c->cdev->gadget)) { - ss_source_desc.bEndpointAddress = - fs_source_desc.bEndpointAddress; - ss_sink_desc.bEndpointAddress = - fs_sink_desc.bEndpointAddress; - f->ss_descriptors = ss_source_sink_descs; - } + ss_source_desc.bEndpointAddress = + fs_source_desc.bEndpointAddress; + ss_sink_desc.bEndpointAddress = + fs_sink_desc.bEndpointAddress; - DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", + /* + * Fill in the SS isoc descriptors from the module parameters. + * We assume that the user knows what they are doing and won't + * give parameters that their UDC doesn't support. + */ + ss_iso_source_desc.wMaxPacketSize = isoc_maxpacket; + ss_iso_source_desc.bInterval = isoc_interval; + ss_iso_source_comp_desc.bmAttributes = isoc_mult; + ss_iso_source_comp_desc.bMaxBurst = isoc_maxburst; + ss_iso_source_comp_desc.wBytesPerInterval = + isoc_maxpacket * (isoc_mult + 1) * (isoc_maxburst + 1); + ss_iso_source_desc.bEndpointAddress = + fs_iso_source_desc.bEndpointAddress; + + ss_iso_sink_desc.wMaxPacketSize = isoc_maxpacket; + ss_iso_sink_desc.bInterval = isoc_interval; + ss_iso_sink_comp_desc.bmAttributes = isoc_mult; + ss_iso_sink_comp_desc.bMaxBurst = isoc_maxburst; + ss_iso_sink_comp_desc.wBytesPerInterval = + isoc_maxpacket * (isoc_mult + 1) * (isoc_maxburst + 1); + ss_iso_sink_desc.bEndpointAddress = fs_iso_sink_desc.bEndpointAddress; + + ret = usb_assign_descriptors(f, fs_source_sink_descs, + hs_source_sink_descs, ss_source_sink_descs); + if (ret) + return ret; + + DBG(cdev, "%s speed %s: IN/%s, OUT/%s, ISO-IN/%s, ISO-OUT/%s\n", (gadget_is_superspeed(c->cdev->gadget) ? "super" : (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")), - f->name, ss->in_ep->name, ss->out_ep->name); + f->name, ss->in_ep->name, ss->out_ep->name, + ss->iso_in_ep ? ss->iso_in_ep->name : "<none>", + ss->iso_out_ep ? ss->iso_out_ep->name : "<none>"); return 0; } static void -sourcesink_unbind(struct usb_configuration *c, struct usb_function *f) +sourcesink_free_func(struct usb_function *f) { + struct f_ss_opts *opts; + + opts = container_of(f->fi, struct f_ss_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); + + usb_free_all_descriptors(f); kfree(func_to_ss(f)); } @@ -251,6 +496,9 @@ static int check_read_data(struct f_sourcesink *ss, struct usb_request *req) u8 *buf = req->buf; struct usb_composite_dev *cdev = ss->function.config->cdev; + if (pattern == 2) + return 0; + for (i = 0; i < req->actual; i++, buf++) { switch (pattern) { @@ -265,7 +513,7 @@ static int check_read_data(struct f_sourcesink *ss, struct usb_request *req) * each usb transfer request should be. Resync is done * with set_interface or set_config. (We *WANT* it to * get quickly out of sync if controllers or their drivers - * stutter for any reason, including buffer duplcation...) + * stutter for any reason, including buffer duplication...) */ case 1: if (*buf == (u8)(i % 63)) @@ -292,23 +540,31 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req) for (i = 0; i < req->length; i++) *buf++ = (u8) (i % 63); break; + case 2: + break; } } static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) { - struct f_sourcesink *ss = ep->driver_data; - struct usb_composite_dev *cdev = ss->function.config->cdev; - int status = req->status; + struct usb_composite_dev *cdev; + struct f_sourcesink *ss = ep->driver_data; + int status = req->status; + + /* driver_data will be null if ep has been disabled */ + if (!ss) + return; + + cdev = ss->function.config->cdev; switch (status) { case 0: /* normal completion? */ if (ep == ss->out_ep) { check_read_data(ss, req); - memset(req->buf, 0x55, req->length); - } else - reinit_write_data(ep, req); + if (pattern != 2) + memset(req->buf, 0x55, req->length); + } break; /* this endpoint is normally active while we're configured */ @@ -344,32 +600,57 @@ static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) } } -static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in) +static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in, + bool is_iso, int speed) { struct usb_ep *ep; struct usb_request *req; - int status; + int i, size, status; + + for (i = 0; i < 8; i++) { + if (is_iso) { + switch (speed) { + case USB_SPEED_SUPER: + size = isoc_maxpacket * (isoc_mult + 1) * + (isoc_maxburst + 1); + break; + case USB_SPEED_HIGH: + size = isoc_maxpacket * (isoc_mult + 1); + break; + default: + size = isoc_maxpacket > 1023 ? + 1023 : isoc_maxpacket; + break; + } + ep = is_in ? ss->iso_in_ep : ss->iso_out_ep; + req = ss_alloc_ep_req(ep, size); + } else { + ep = is_in ? ss->in_ep : ss->out_ep; + req = ss_alloc_ep_req(ep, 0); + } - ep = is_in ? ss->in_ep : ss->out_ep; - req = alloc_ep_req(ep); - if (!req) - return -ENOMEM; + if (!req) + return -ENOMEM; - req->complete = source_sink_complete; - if (is_in) - reinit_write_data(ep, req); - else - memset(req->buf, 0x55, req->length); + req->complete = source_sink_complete; + if (is_in) + reinit_write_data(ep, req); + else if (pattern != 2) + memset(req->buf, 0x55, req->length); - status = usb_ep_queue(ep, req, GFP_ATOMIC); - if (status) { - struct usb_composite_dev *cdev; + status = usb_ep_queue(ep, req, GFP_ATOMIC); + if (status) { + struct usb_composite_dev *cdev; - cdev = ss->function.config->cdev; - ERROR(cdev, "start %s %s --> %d\n", - is_in ? "IN" : "OUT", - ep->name, status); - free_ep_req(ep, req); + cdev = ss->function.config->cdev; + ERROR(cdev, "start %s%s %s --> %d\n", + is_iso ? "ISO-" : "", is_in ? "IN" : "OUT", + ep->name, status); + free_ep_req(ep, req); + } + + if (!is_iso) + break; } return status; @@ -380,17 +661,20 @@ static void disable_source_sink(struct f_sourcesink *ss) struct usb_composite_dev *cdev; cdev = ss->function.config->cdev; - disable_endpoints(cdev, ss->in_ep, ss->out_ep); + disable_endpoints(cdev, ss->in_ep, ss->out_ep, ss->iso_in_ep, + ss->iso_out_ep); VDBG(cdev, "%s disabled\n", ss->function.name); } static int -enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss) +enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss, + int alt) { int result = 0; + int speed = cdev->gadget->speed; struct usb_ep *ep; - /* one endpoint writes (sources) zeroes IN (to the host) */ + /* one bulk endpoint writes (sources) zeroes IN (to the host) */ ep = ss->in_ep; result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); if (result) @@ -400,7 +684,7 @@ enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss) return result; ep->driver_data = ss; - result = source_sink_start_ep(ss, true); + result = source_sink_start_ep(ss, true, false, speed); if (result < 0) { fail: ep = ss->in_ep; @@ -409,7 +693,7 @@ fail: return result; } - /* one endpoint reads (sinks) anything OUT (from the host) */ + /* one bulk endpoint reads (sinks) anything OUT (from the host) */ ep = ss->out_ep; result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); if (result) @@ -419,27 +703,82 @@ fail: goto fail; ep->driver_data = ss; - result = source_sink_start_ep(ss, false); + result = source_sink_start_ep(ss, false, false, speed); if (result < 0) { +fail2: + ep = ss->out_ep; usb_ep_disable(ep); ep->driver_data = NULL; goto fail; } - DBG(cdev, "%s enabled\n", ss->function.name); + if (alt == 0) + goto out; + + /* one iso endpoint writes (sources) zeroes IN (to the host) */ + ep = ss->iso_in_ep; + if (ep) { + result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); + if (result) + goto fail2; + result = usb_ep_enable(ep); + if (result < 0) + goto fail2; + ep->driver_data = ss; + + result = source_sink_start_ep(ss, true, true, speed); + if (result < 0) { +fail3: + ep = ss->iso_in_ep; + if (ep) { + usb_ep_disable(ep); + ep->driver_data = NULL; + } + goto fail2; + } + } + + /* one iso endpoint reads (sinks) anything OUT (from the host) */ + ep = ss->iso_out_ep; + if (ep) { + result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); + if (result) + goto fail3; + result = usb_ep_enable(ep); + if (result < 0) + goto fail3; + ep->driver_data = ss; + + result = source_sink_start_ep(ss, false, true, speed); + if (result < 0) { + usb_ep_disable(ep); + ep->driver_data = NULL; + goto fail3; + } + } +out: + ss->cur_alt = alt; + + DBG(cdev, "%s enabled, alt intf %d\n", ss->function.name, alt); return result; } static int sourcesink_set_alt(struct usb_function *f, unsigned intf, unsigned alt) { - struct f_sourcesink *ss = func_to_ss(f); - struct usb_composite_dev *cdev = f->config->cdev; + struct f_sourcesink *ss = func_to_ss(f); + struct usb_composite_dev *cdev = f->config->cdev; - /* we know alt is zero */ if (ss->in_ep->driver_data) disable_source_sink(ss); - return enable_source_sink(cdev, ss); + return enable_source_sink(cdev, ss, alt); +} + +static int sourcesink_get_alt(struct usb_function *f, unsigned intf) +{ + struct f_sourcesink *ss = func_to_ss(f); + + return ss->cur_alt; } static void sourcesink_disable(struct usb_function *f) @@ -451,38 +790,17 @@ static void sourcesink_disable(struct usb_function *f) /*-------------------------------------------------------------------------*/ -static int __init sourcesink_bind_config(struct usb_configuration *c) -{ - struct f_sourcesink *ss; - int status; - - ss = kzalloc(sizeof *ss, GFP_KERNEL); - if (!ss) - return -ENOMEM; - - ss->function.name = "source/sink"; - ss->function.descriptors = fs_source_sink_descs; - ss->function.bind = sourcesink_bind; - ss->function.unbind = sourcesink_unbind; - ss->function.set_alt = sourcesink_set_alt; - ss->function.disable = sourcesink_disable; - - status = usb_add_function(c, &ss->function); - if (status) - kfree(ss); - return status; -} - -static int sourcesink_setup(struct usb_configuration *c, +static int sourcesink_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { + struct usb_configuration *c = f->config; struct usb_request *req = c->cdev->req; int value = -EOPNOTSUPP; u16 w_index = le16_to_cpu(ctrl->wIndex); u16 w_value = le16_to_cpu(ctrl->wValue); u16 w_length = le16_to_cpu(ctrl->wLength); - req->length = USB_BUFSIZ; + req->length = USB_COMP_EP0_BUFSIZ; /* composite driver infrastructure handles everything except * the two control test requests. @@ -536,7 +854,7 @@ unknown: req->length = value; value = usb_ep_queue(c->cdev->gadget->ep0, req, GFP_ATOMIC); if (value < 0) - ERROR(c->cdev, "source/sinkc response, err %d\n", + ERROR(c->cdev, "source/sink response, err %d\n", value); } @@ -544,41 +862,386 @@ unknown: return value; } -static struct usb_configuration sourcesink_driver = { - .label = "source/sink", - .strings = sourcesink_strings, - .setup = sourcesink_setup, - .bConfigurationValue = 3, - .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - /* .iConfiguration = DYNAMIC */ +static struct usb_function *source_sink_alloc_func( + struct usb_function_instance *fi) +{ + struct f_sourcesink *ss; + struct f_ss_opts *ss_opts; + + ss = kzalloc(sizeof(*ss), GFP_KERNEL); + if (!ss) + return NULL; + + ss_opts = container_of(fi, struct f_ss_opts, func_inst); + + mutex_lock(&ss_opts->lock); + ss_opts->refcnt++; + mutex_unlock(&ss_opts->lock); + + pattern = ss_opts->pattern; + isoc_interval = ss_opts->isoc_interval; + isoc_maxpacket = ss_opts->isoc_maxpacket; + isoc_mult = ss_opts->isoc_mult; + isoc_maxburst = ss_opts->isoc_maxburst; + buflen = ss_opts->bulk_buflen; + + ss->function.name = "source/sink"; + ss->function.bind = sourcesink_bind; + ss->function.set_alt = sourcesink_set_alt; + ss->function.get_alt = sourcesink_get_alt; + ss->function.disable = sourcesink_disable; + ss->function.setup = sourcesink_setup; + ss->function.strings = sourcesink_strings; + + ss->function.free_func = sourcesink_free_func; + + return &ss->function; +} + +static inline struct f_ss_opts *to_f_ss_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_ss_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_ss_opts); +CONFIGFS_ATTR_OPS(f_ss_opts); + +static void ss_attr_release(struct config_item *item) +{ + struct f_ss_opts *ss_opts = to_f_ss_opts(item); + + usb_put_function_instance(&ss_opts->func_inst); +} + +static struct configfs_item_operations ss_item_ops = { + .release = ss_attr_release, + .show_attribute = f_ss_opts_attr_show, + .store_attribute = f_ss_opts_attr_store, }; -/** - * sourcesink_add - add a source/sink testing configuration to a device - * @cdev: the device to support the configuration - */ -int __init sourcesink_add(struct usb_composite_dev *cdev, bool autoresume) +static ssize_t f_ss_opts_pattern_show(struct f_ss_opts *opts, char *page) { - int id; + int result; - /* allocate string ID(s) */ - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_sourcesink[0].id = id; + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->pattern); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_pattern_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num != 0 && num != 1 && num != 2) { + ret = -EINVAL; + goto end; + } + + opts->pattern = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_pattern = + __CONFIGFS_ATTR(pattern, S_IRUGO | S_IWUSR, + f_ss_opts_pattern_show, + f_ss_opts_pattern_store); + +static ssize_t f_ss_opts_isoc_interval_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_interval); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_interval_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num > 16) { + ret = -EINVAL; + goto end; + } + + opts->isoc_interval = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_interval = + __CONFIGFS_ATTR(isoc_interval, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_interval_show, + f_ss_opts_isoc_interval_store); + +static ssize_t f_ss_opts_isoc_maxpacket_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_maxpacket); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_maxpacket_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u16 num; - source_sink_intf.iInterface = id; - sourcesink_driver.iConfiguration = id; + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou16(page, 0, &num); + if (ret) + goto end; + + if (num > 1024) { + ret = -EINVAL; + goto end; + } + + opts->isoc_maxpacket = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_maxpacket = + __CONFIGFS_ATTR(isoc_maxpacket, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_maxpacket_show, + f_ss_opts_isoc_maxpacket_store); + +static ssize_t f_ss_opts_isoc_mult_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_mult); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_mult_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num > 2) { + ret = -EINVAL; + goto end; + } + + opts->isoc_mult = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_mult = + __CONFIGFS_ATTR(isoc_mult, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_mult_show, + f_ss_opts_isoc_mult_store); + +static ssize_t f_ss_opts_isoc_maxburst_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_maxburst); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_maxburst_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; - /* support autoresume for remote wakeup testing */ - if (autoresume) - sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + if (num > 15) { + ret = -EINVAL; + goto end; + } + + opts->isoc_maxburst = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} - /* support OTG systems */ - if (gadget_is_otg(cdev->gadget)) { - sourcesink_driver.descriptors = otg_desc; - sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; +static struct f_ss_opts_attribute f_ss_opts_isoc_maxburst = + __CONFIGFS_ATTR(isoc_maxburst, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_maxburst_show, + f_ss_opts_isoc_maxburst_store); + +static ssize_t f_ss_opts_bulk_buflen_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->bulk_buflen); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_bulk_buflen_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u32 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; } - return usb_add_config(cdev, &sourcesink_driver, sourcesink_bind_config); + ret = kstrtou32(page, 0, &num); + if (ret) + goto end; + + opts->bulk_buflen = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_bulk_buflen = + __CONFIGFS_ATTR(buflen, S_IRUGO | S_IWUSR, + f_ss_opts_bulk_buflen_show, + f_ss_opts_bulk_buflen_store); + +static struct configfs_attribute *ss_attrs[] = { + &f_ss_opts_pattern.attr, + &f_ss_opts_isoc_interval.attr, + &f_ss_opts_isoc_maxpacket.attr, + &f_ss_opts_isoc_mult.attr, + &f_ss_opts_isoc_maxburst.attr, + &f_ss_opts_bulk_buflen.attr, + NULL, +}; + +static struct config_item_type ss_func_type = { + .ct_item_ops = &ss_item_ops, + .ct_attrs = ss_attrs, + .ct_owner = THIS_MODULE, +}; + +static void source_sink_free_instance(struct usb_function_instance *fi) +{ + struct f_ss_opts *ss_opts; + + ss_opts = container_of(fi, struct f_ss_opts, func_inst); + kfree(ss_opts); } + +static struct usb_function_instance *source_sink_alloc_inst(void) +{ + struct f_ss_opts *ss_opts; + + ss_opts = kzalloc(sizeof(*ss_opts), GFP_KERNEL); + if (!ss_opts) + return ERR_PTR(-ENOMEM); + mutex_init(&ss_opts->lock); + ss_opts->func_inst.free_func_inst = source_sink_free_instance; + ss_opts->isoc_interval = GZERO_ISOC_INTERVAL; + ss_opts->isoc_maxpacket = GZERO_ISOC_MAXPACKET; + ss_opts->bulk_buflen = GZERO_BULK_BUFLEN; + + config_group_init_type_name(&ss_opts->func_inst.group, "", + &ss_func_type); + + return &ss_opts->func_inst; +} +DECLARE_USB_FUNCTION(SourceSink, source_sink_alloc_inst, + source_sink_alloc_func); + +static int __init sslb_modinit(void) +{ + int ret; + + ret = usb_function_register(&SourceSinkusb_func); + if (ret) + return ret; + ret = lb_modinit(); + if (ret) + usb_function_unregister(&SourceSinkusb_func); + return ret; +} +static void __exit sslb_modexit(void) +{ + usb_function_unregister(&SourceSinkusb_func); + lb_modexit(); +} +module_init(sslb_modinit); +module_exit(sslb_modexit); + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c index c1540648125..1ea8baf3333 100644 --- a/drivers/usb/gadget/f_subset.c +++ b/drivers/usb/gadget/f_subset.c @@ -12,11 +12,13 @@ #include <linux/slab.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include "u_ether.h" - +#include "u_ether_configfs.h" +#include "u_gether.h" /* * This function packages a simple "CDC Subset" Ethernet port with no real @@ -74,7 +76,7 @@ static inline struct f_gether *func_to_geth(struct usb_function *f) /* interface descriptor: */ -static struct usb_interface_descriptor subset_data_intf __initdata = { +static struct usb_interface_descriptor subset_data_intf = { .bLength = sizeof subset_data_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -87,7 +89,7 @@ static struct usb_interface_descriptor subset_data_intf __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_cdc_header_desc mdlm_header_desc __initdata = { +static struct usb_cdc_header_desc mdlm_header_desc = { .bLength = sizeof mdlm_header_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, @@ -95,7 +97,7 @@ static struct usb_cdc_header_desc mdlm_header_desc __initdata = { .bcdCDC = cpu_to_le16(0x0110), }; -static struct usb_cdc_mdlm_desc mdlm_desc __initdata = { +static struct usb_cdc_mdlm_desc mdlm_desc = { .bLength = sizeof mdlm_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_MDLM_TYPE, @@ -111,7 +113,7 @@ static struct usb_cdc_mdlm_desc mdlm_desc __initdata = { * can't really use its struct. All we do here is say that we're using * the submode of "SAFE" which directly matches the CDC Subset. */ -static u8 mdlm_detail_desc[] __initdata = { +static u8 mdlm_detail_desc[] = { 6, USB_DT_CS_INTERFACE, USB_CDC_MDLM_DETAIL_TYPE, @@ -121,7 +123,7 @@ static u8 mdlm_detail_desc[] __initdata = { 0, /* network data capabilities ("raw" encapsulation) */ }; -static struct usb_cdc_ether_desc ether_desc __initdata = { +static struct usb_cdc_ether_desc ether_desc = { .bLength = sizeof ether_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, @@ -136,7 +138,7 @@ static struct usb_cdc_ether_desc ether_desc __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor fs_subset_in_desc __initdata = { +static struct usb_endpoint_descriptor fs_subset_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -144,7 +146,7 @@ static struct usb_endpoint_descriptor fs_subset_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor fs_subset_out_desc __initdata = { +static struct usb_endpoint_descriptor fs_subset_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -152,7 +154,7 @@ static struct usb_endpoint_descriptor fs_subset_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *fs_eth_function[] __initdata = { +static struct usb_descriptor_header *fs_eth_function[] = { (struct usb_descriptor_header *) &subset_data_intf, (struct usb_descriptor_header *) &mdlm_header_desc, (struct usb_descriptor_header *) &mdlm_desc, @@ -165,7 +167,7 @@ static struct usb_descriptor_header *fs_eth_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor hs_subset_in_desc __initdata = { +static struct usb_endpoint_descriptor hs_subset_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -173,7 +175,7 @@ static struct usb_endpoint_descriptor hs_subset_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor hs_subset_out_desc __initdata = { +static struct usb_endpoint_descriptor hs_subset_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -181,7 +183,7 @@ static struct usb_endpoint_descriptor hs_subset_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *hs_eth_function[] __initdata = { +static struct usb_descriptor_header *hs_eth_function[] = { (struct usb_descriptor_header *) &subset_data_intf, (struct usb_descriptor_header *) &mdlm_header_desc, (struct usb_descriptor_header *) &mdlm_desc, @@ -194,7 +196,7 @@ static struct usb_descriptor_header *hs_eth_function[] __initdata = { /* super speed support: */ -static struct usb_endpoint_descriptor ss_subset_in_desc __initdata = { +static struct usb_endpoint_descriptor ss_subset_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -202,7 +204,7 @@ static struct usb_endpoint_descriptor ss_subset_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(1024), }; -static struct usb_endpoint_descriptor ss_subset_out_desc __initdata = { +static struct usb_endpoint_descriptor ss_subset_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -210,7 +212,7 @@ static struct usb_endpoint_descriptor ss_subset_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(1024), }; -static struct usb_ss_ep_comp_descriptor ss_subset_bulk_comp_desc __initdata = { +static struct usb_ss_ep_comp_descriptor ss_subset_bulk_comp_desc = { .bLength = sizeof ss_subset_bulk_comp_desc, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -219,7 +221,7 @@ static struct usb_ss_ep_comp_descriptor ss_subset_bulk_comp_desc __initdata = { /* .bmAttributes = 0, */ }; -static struct usb_descriptor_header *ss_eth_function[] __initdata = { +static struct usb_descriptor_header *ss_eth_function[] = { (struct usb_descriptor_header *) &subset_data_intf, (struct usb_descriptor_header *) &mdlm_header_desc, (struct usb_descriptor_header *) &mdlm_desc, @@ -236,7 +238,7 @@ static struct usb_descriptor_header *ss_eth_function[] __initdata = { static struct usb_string geth_string_defs[] = { [0].s = "CDC Ethernet Subset/SAFE", - [1].s = NULL /* DYNAMIC */, + [1].s = "", { } /* end of list */ }; @@ -274,7 +276,7 @@ static int geth_set_alt(struct usb_function *f, unsigned intf, unsigned alt) } net = gether_connect(&geth->port); - return IS_ERR(net) ? PTR_ERR(net) : 0; + return PTR_ERR_OR_ZERO(net); } static void geth_disable(struct usb_function *f) @@ -290,14 +292,44 @@ static void geth_disable(struct usb_function *f) /* serial function driver setup/binding */ -static int __init +static int geth_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_gether *geth = func_to_geth(f); + struct usb_string *us; int status; struct usb_ep *ep; + struct f_gether_opts *gether_opts; + + gether_opts = container_of(f->fi, struct f_gether_opts, func_inst); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to gether_opts->bound access + */ + if (!gether_opts->bound) { + mutex_lock(&gether_opts->lock); + gether_set_gadget(gether_opts->net, cdev->gadget); + status = gether_register_netdev(gether_opts->net); + mutex_unlock(&gether_opts->lock); + if (status) + return status; + gether_opts->bound = true; + } + + us = usb_gstrings_attach(cdev, geth_strings, + ARRAY_SIZE(geth_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + + subset_data_intf.iInterface = us[0].id; + ether_desc.iMACAddress = us[1].id; + /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) @@ -319,38 +351,22 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) geth->port.out_ep = ep; ep->driver_data = cdev; /* claim */ - /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(fs_eth_function); - if (!f->descriptors) - goto fail; - /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at * both speeds */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - hs_subset_in_desc.bEndpointAddress = - fs_subset_in_desc.bEndpointAddress; - hs_subset_out_desc.bEndpointAddress = - fs_subset_out_desc.bEndpointAddress; - - /* copy descriptors, and track endpoint copies */ - f->hs_descriptors = usb_copy_descriptors(hs_eth_function); - if (!f->hs_descriptors) - goto fail; - } + hs_subset_in_desc.bEndpointAddress = fs_subset_in_desc.bEndpointAddress; + hs_subset_out_desc.bEndpointAddress = + fs_subset_out_desc.bEndpointAddress; - if (gadget_is_superspeed(c->cdev->gadget)) { - ss_subset_in_desc.bEndpointAddress = - fs_subset_in_desc.bEndpointAddress; - ss_subset_out_desc.bEndpointAddress = - fs_subset_out_desc.bEndpointAddress; + ss_subset_in_desc.bEndpointAddress = fs_subset_in_desc.bEndpointAddress; + ss_subset_out_desc.bEndpointAddress = + fs_subset_out_desc.bEndpointAddress; - /* copy descriptors, and track endpoint copies */ - f->ss_descriptors = usb_copy_descriptors(ss_eth_function); - if (!f->ss_descriptors) - goto fail; - } + status = usb_assign_descriptors(f, fs_eth_function, hs_eth_function, + ss_eth_function); + if (status) + goto fail; /* NOTE: all that is done without knowing or caring about * the network link ... which is unavailable to this code @@ -364,15 +380,11 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: - if (f->descriptors) - usb_free_descriptors(f->descriptors); - if (f->hs_descriptors) - usb_free_descriptors(f->hs_descriptors); - + usb_free_all_descriptors(f); /* we might as well release our claims on endpoints */ - if (geth->port.out_ep->desc) + if (geth->port.out_ep) geth->port.out_ep->driver_data = NULL; - if (geth->port.in_ep->desc) + if (geth->port.in_ep) geth->port.in_ep->driver_data = NULL; ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); @@ -380,81 +392,128 @@ fail: return status; } -static void -geth_unbind(struct usb_configuration *c, struct usb_function *f) +static inline struct f_gether_opts *to_f_gether_opts(struct config_item *item) { - if (gadget_is_superspeed(c->cdev->gadget)) - usb_free_descriptors(f->ss_descriptors); - if (gadget_is_dualspeed(c->cdev->gadget)) - usb_free_descriptors(f->hs_descriptors); - usb_free_descriptors(f->descriptors); - geth_string_defs[1].s = NULL; - kfree(func_to_geth(f)); + return container_of(to_config_group(item), struct f_gether_opts, + func_inst.group); } -/** - * geth_bind_config - add CDC Subset network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int __init geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) -{ - struct f_gether *geth; - int status; +/* f_gether_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(gether); - if (!ethaddr) - return -EINVAL; +/* f_gether_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(gether); - /* maybe allocate device-global string IDs */ - if (geth_string_defs[0].id == 0) { +/* f_gether_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(gether); - /* interface label */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - geth_string_defs[0].id = status; - subset_data_intf.iInterface = status; +/* f_gether_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(gether); - /* MAC address */ - status = usb_string_id(c->cdev); - if (status < 0) - return status; - geth_string_defs[1].id = status; - ether_desc.iMACAddress = status; +/* f_gether_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(gether); + +static struct configfs_attribute *gether_attrs[] = { + &f_gether_opts_dev_addr.attr, + &f_gether_opts_host_addr.attr, + &f_gether_opts_qmult.attr, + &f_gether_opts_ifname.attr, + NULL, +}; + +static struct config_item_type gether_func_type = { + .ct_item_ops = &gether_item_ops, + .ct_attrs = gether_attrs, + .ct_owner = THIS_MODULE, +}; + +static void geth_free_inst(struct usb_function_instance *f) +{ + struct f_gether_opts *opts; + + opts = container_of(f, struct f_gether_opts, func_inst); + if (opts->bound) + gether_cleanup(netdev_priv(opts->net)); + else + free_netdev(opts->net); + kfree(opts); +} + +static struct usb_function_instance *geth_alloc_inst(void) +{ + struct f_gether_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = geth_free_inst; + opts->net = gether_setup_default(); + if (IS_ERR(opts->net)) { + struct net_device *net = opts->net; + kfree(opts); + return ERR_CAST(net); } + config_group_init_type_name(&opts->func_inst.group, "", + &gether_func_type); + + return &opts->func_inst; +} + +static void geth_free(struct usb_function *f) +{ + struct f_gether *eth; + + eth = func_to_geth(f); + kfree(eth); +} + +static void geth_unbind(struct usb_configuration *c, struct usb_function *f) +{ + geth_string_defs[0].id = 0; + usb_free_all_descriptors(f); +} + +static struct usb_function *geth_alloc(struct usb_function_instance *fi) +{ + struct f_gether *geth; + struct f_gether_opts *opts; + int status; + /* allocate and initialize one new instance */ - geth = kzalloc(sizeof *geth, GFP_KERNEL); + geth = kzalloc(sizeof(*geth), GFP_KERNEL); if (!geth) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_gether_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; /* export host's Ethernet address in CDC format */ - snprintf(geth->ethaddr, sizeof geth->ethaddr, - "%02X%02X%02X%02X%02X%02X", - ethaddr[0], ethaddr[1], ethaddr[2], - ethaddr[3], ethaddr[4], ethaddr[5]); + status = gether_get_host_addr_cdc(opts->net, geth->ethaddr, + sizeof(geth->ethaddr)); + if (status < 12) { + kfree(geth); + mutex_unlock(&opts->lock); + return ERR_PTR(-EINVAL); + } geth_string_defs[1].s = geth->ethaddr; + geth->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); geth->port.cdc_filter = DEFAULT_FILTER; geth->port.func.name = "cdc_subset"; - geth->port.func.strings = geth_strings; geth->port.func.bind = geth_bind; geth->port.func.unbind = geth_unbind; geth->port.func.set_alt = geth_set_alt; geth->port.func.disable = geth_disable; + geth->port.func.free_func = geth_free; - status = usb_add_function(c, &geth->port.func); - if (status) { - geth_string_defs[1].s = NULL; - kfree(geth); - } - return status; + return &geth->port.func; } + +DECLARE_USB_FUNCTION_INIT(geth, geth_alloc_inst, geth_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_uac1.c index ec7ffcd0d0c..2b4c82d84bf 100644 --- a/drivers/usb/gadget/f_audio.c +++ b/drivers/usb/gadget/f_uac1.c @@ -14,7 +14,7 @@ #include <linux/device.h> #include <linux/atomic.h> -#include "u_audio.h" +#include "u_uac1.h" #define OUT_EP_MAX_PACKET_SIZE 200 static int req_buf_size = OUT_EP_MAX_PACKET_SIZE; @@ -216,29 +216,6 @@ static struct usb_descriptor_header *f_audio_desc[] __initdata = { NULL, }; -/* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 - -static char manufacturer[50]; - -static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = DRIVER_DESC, - { } /* end of list */ -}; - -static struct usb_gadget_strings stringtab_dev = { - .language = 0x0409, /* en-us */ - .strings = strings_dev, -}; - -static struct usb_gadget_strings *audio_strings[] = { - &stringtab_dev, - NULL, -}; - /* * This function is an ALSA sound card following USB Audio Class Spec 1.0. */ @@ -441,6 +418,7 @@ static int audio_get_intf_req(struct usb_function *f, req->context = audio; req->complete = f_audio_complete; + len = min_t(size_t, sizeof(value), len); memcpy(req->buf, &value, len); return len; @@ -653,7 +631,7 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f) struct usb_composite_dev *cdev = c->cdev; struct f_audio *audio = func_to_audio(f); int status; - struct usb_ep *ep; + struct usb_ep *ep = NULL; f_audio_build_desc(audio); @@ -682,22 +660,14 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f) status = -ENOMEM; /* copy descriptors, and track endpoint copies */ - f->descriptors = usb_copy_descriptors(f_audio_desc); - - /* - * support all relevant hardware speeds... we expect that when - * hardware is dual speed, all bulk-capable endpoints work at - * both speeds - */ - if (gadget_is_dualspeed(c->cdev->gadget)) { - c->highspeed = true; - f->hs_descriptors = usb_copy_descriptors(f_audio_desc); - } - + status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL); + if (status) + goto fail; return 0; fail: - + if (ep) + ep->driver_data = NULL; return status; } @@ -706,8 +676,7 @@ f_audio_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_audio *audio = func_to_audio(f); - usb_free_descriptors(f->descriptors); - usb_free_descriptors(f->hs_descriptors); + usb_free_all_descriptors(f); kfree(audio); } @@ -726,7 +695,7 @@ static int generic_get_cmd(struct usb_audio_control *con, u8 cmd) } /* Todo: add more control selecotor dynamically */ -int __init control_selector_init(struct f_audio *audio) +static int __init control_selector_init(struct f_audio *audio) { INIT_LIST_HEAD(&audio->cs); list_add(&feature_unit.list, &audio->cs); @@ -750,7 +719,7 @@ int __init control_selector_init(struct f_audio *audio) * * Returns zero on success, else negative errno. */ -int __init audio_bind_config(struct usb_configuration *c) +static int __init audio_bind_config(struct usb_configuration *c) { struct f_audio *audio; int status; diff --git a/drivers/usb/gadget/f_uac2.c b/drivers/usb/gadget/f_uac2.c new file mode 100644 index 00000000000..6261db4a991 --- /dev/null +++ b/drivers/usb/gadget/f_uac2.c @@ -0,0 +1,1354 @@ +/* + * f_uac2.c -- USB Audio Class 2.0 Function + * + * Copyright (C) 2011 + * Yadwinder Singh (yadi.brar01@gmail.com) + * Jaswinder Singh (jaswinder.singh@linaro.org) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/usb/audio.h> +#include <linux/usb/audio-v2.h> +#include <linux/platform_device.h> +#include <linux/module.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +/* Playback(USB-IN) Default Stereo - Fl/Fr */ +static int p_chmask = 0x3; +module_param(p_chmask, uint, S_IRUGO); +MODULE_PARM_DESC(p_chmask, "Playback Channel Mask"); + +/* Playback Default 48 KHz */ +static int p_srate = 48000; +module_param(p_srate, uint, S_IRUGO); +MODULE_PARM_DESC(p_srate, "Playback Sampling Rate"); + +/* Playback Default 16bits/sample */ +static int p_ssize = 2; +module_param(p_ssize, uint, S_IRUGO); +MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)"); + +/* Capture(USB-OUT) Default Stereo - Fl/Fr */ +static int c_chmask = 0x3; +module_param(c_chmask, uint, S_IRUGO); +MODULE_PARM_DESC(c_chmask, "Capture Channel Mask"); + +/* Capture Default 64 KHz */ +static int c_srate = 64000; +module_param(c_srate, uint, S_IRUGO); +MODULE_PARM_DESC(c_srate, "Capture Sampling Rate"); + +/* Capture Default 16bits/sample */ +static int c_ssize = 2; +module_param(c_ssize, uint, S_IRUGO); +MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)"); + +/* Keep everyone on toes */ +#define USB_XFERS 2 + +/* + * The driver implements a simple UAC_2 topology. + * USB-OUT -> IT_1 -> OT_3 -> ALSA_Capture + * ALSA_Playback -> IT_2 -> OT_4 -> USB-IN + * Capture and Playback sampling rates are independently + * controlled by two clock sources : + * CLK_5 := c_srate, and CLK_6 := p_srate + */ +#define USB_OUT_IT_ID 1 +#define IO_IN_IT_ID 2 +#define IO_OUT_OT_ID 3 +#define USB_IN_OT_ID 4 +#define USB_OUT_CLK_ID 5 +#define USB_IN_CLK_ID 6 + +#define CONTROL_ABSENT 0 +#define CONTROL_RDONLY 1 +#define CONTROL_RDWR 3 + +#define CLK_FREQ_CTRL 0 +#define CLK_VLD_CTRL 2 + +#define COPY_CTRL 0 +#define CONN_CTRL 2 +#define OVRLD_CTRL 4 +#define CLSTR_CTRL 6 +#define UNFLW_CTRL 8 +#define OVFLW_CTRL 10 + +const char *uac2_name = "snd_uac2"; + +struct uac2_req { + struct uac2_rtd_params *pp; /* parent param */ + struct usb_request *req; +}; + +struct uac2_rtd_params { + struct snd_uac2_chip *uac2; /* parent chip */ + bool ep_enabled; /* if the ep is enabled */ + /* Size of the ring buffer */ + size_t dma_bytes; + unsigned char *dma_area; + + struct snd_pcm_substream *ss; + + /* Ring buffer */ + ssize_t hw_ptr; + + void *rbuf; + + size_t period_size; + + unsigned max_psize; + struct uac2_req ureq[USB_XFERS]; + + spinlock_t lock; +}; + +struct snd_uac2_chip { + struct platform_device pdev; + struct platform_driver pdrv; + + struct uac2_rtd_params p_prm; + struct uac2_rtd_params c_prm; + + struct snd_card *card; + struct snd_pcm *pcm; +}; + +#define BUFF_SIZE_MAX (PAGE_SIZE * 16) +#define PRD_SIZE_MAX PAGE_SIZE +#define MIN_PERIODS 4 + +static struct snd_pcm_hardware uac2_pcm_hardware = { + .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER + | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID + | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX, + .buffer_bytes_max = BUFF_SIZE_MAX, + .period_bytes_max = PRD_SIZE_MAX, + .periods_min = MIN_PERIODS, +}; + +struct audio_dev { + u8 ac_intf, ac_alt; + u8 as_out_intf, as_out_alt; + u8 as_in_intf, as_in_alt; + + struct usb_ep *in_ep, *out_ep; + struct usb_function func; + + /* The ALSA Sound Card it represents on the USB-Client side */ + struct snd_uac2_chip uac2; +}; + +static struct audio_dev *agdev_g; + +static inline +struct audio_dev *func_to_agdev(struct usb_function *f) +{ + return container_of(f, struct audio_dev, func); +} + +static inline +struct audio_dev *uac2_to_agdev(struct snd_uac2_chip *u) +{ + return container_of(u, struct audio_dev, uac2); +} + +static inline +struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p) +{ + return container_of(p, struct snd_uac2_chip, pdev); +} + +static inline +uint num_channels(uint chanmask) +{ + uint num = 0; + + while (chanmask) { + num += (chanmask & 1); + chanmask >>= 1; + } + + return num; +} + +static void +agdev_iso_complete(struct usb_ep *ep, struct usb_request *req) +{ + unsigned pending; + unsigned long flags; + bool update_alsa = false; + unsigned char *src, *dst; + int status = req->status; + struct uac2_req *ur = req->context; + struct snd_pcm_substream *substream; + struct uac2_rtd_params *prm = ur->pp; + struct snd_uac2_chip *uac2 = prm->uac2; + + /* i/f shutting down */ + if (!prm->ep_enabled || req->status == -ESHUTDOWN) + return; + + /* + * We can't really do much about bad xfers. + * Afterall, the ISOCH xfers could fail legitimately. + */ + if (status) + pr_debug("%s: iso_complete status(%d) %d/%d\n", + __func__, status, req->actual, req->length); + + substream = prm->ss; + + /* Do nothing if ALSA isn't active */ + if (!substream) + goto exit; + + spin_lock_irqsave(&prm->lock, flags); + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + src = prm->dma_area + prm->hw_ptr; + req->actual = req->length; + dst = req->buf; + } else { + dst = prm->dma_area + prm->hw_ptr; + src = req->buf; + } + + pending = prm->hw_ptr % prm->period_size; + pending += req->actual; + if (pending >= prm->period_size) + update_alsa = true; + + prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes; + + spin_unlock_irqrestore(&prm->lock, flags); + + /* Pack USB load in ALSA ring buffer */ + memcpy(dst, src, req->actual); +exit: + if (usb_ep_queue(ep, req, GFP_ATOMIC)) + dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); + + if (update_alsa) + snd_pcm_period_elapsed(substream); + + return; +} + +static int +uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); + struct uac2_rtd_params *prm; + unsigned long flags; + int err = 0; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac2->p_prm; + else + prm = &uac2->c_prm; + + spin_lock_irqsave(&prm->lock, flags); + + /* Reset */ + prm->hw_ptr = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + prm->ss = substream; + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + prm->ss = NULL; + break; + default: + err = -EINVAL; + } + + spin_unlock_irqrestore(&prm->lock, flags); + + /* Clear buffer after Play stops */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss) + memset(prm->rbuf, 0, prm->max_psize * USB_XFERS); + + return err; +} + +static snd_pcm_uframes_t uac2_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); + struct uac2_rtd_params *prm; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac2->p_prm; + else + prm = &uac2->c_prm; + + return bytes_to_frames(substream->runtime, prm->hw_ptr); +} + +static int uac2_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); + struct uac2_rtd_params *prm; + int err; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac2->p_prm; + else + prm = &uac2->c_prm; + + err = snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); + if (err >= 0) { + prm->dma_bytes = substream->runtime->dma_bytes; + prm->dma_area = substream->runtime->dma_area; + prm->period_size = params_period_bytes(hw_params); + } + + return err; +} + +static int uac2_pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); + struct uac2_rtd_params *prm; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prm = &uac2->p_prm; + else + prm = &uac2->c_prm; + + prm->dma_area = NULL; + prm->dma_bytes = 0; + prm->period_size = 0; + + return snd_pcm_lib_free_pages(substream); +} + +static int uac2_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + runtime->hw = uac2_pcm_hardware; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + spin_lock_init(&uac2->p_prm.lock); + runtime->hw.rate_min = p_srate; + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; /* ! p_ssize ! */ + runtime->hw.channels_min = num_channels(p_chmask); + runtime->hw.period_bytes_min = 2 * uac2->p_prm.max_psize + / runtime->hw.periods_min; + } else { + spin_lock_init(&uac2->c_prm.lock); + runtime->hw.rate_min = c_srate; + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; /* ! c_ssize ! */ + runtime->hw.channels_min = num_channels(c_chmask); + runtime->hw.period_bytes_min = 2 * uac2->c_prm.max_psize + / runtime->hw.periods_min; + } + + runtime->hw.rate_max = runtime->hw.rate_min; + runtime->hw.channels_max = runtime->hw.channels_min; + + snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + + return 0; +} + +/* ALSA cries without these function pointers */ +static int uac2_pcm_null(struct snd_pcm_substream *substream) +{ + return 0; +} + +static struct snd_pcm_ops uac2_pcm_ops = { + .open = uac2_pcm_open, + .close = uac2_pcm_null, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = uac2_pcm_hw_params, + .hw_free = uac2_pcm_hw_free, + .trigger = uac2_pcm_trigger, + .pointer = uac2_pcm_pointer, + .prepare = uac2_pcm_null, +}; + +static int snd_uac2_probe(struct platform_device *pdev) +{ + struct snd_uac2_chip *uac2 = pdev_to_uac2(pdev); + struct snd_card *card; + struct snd_pcm *pcm; + int err; + + /* Choose any slot, with no id */ + err = snd_card_new(&pdev->dev, -1, NULL, THIS_MODULE, 0, &card); + if (err < 0) + return err; + + uac2->card = card; + + /* + * Create first PCM device + * Create a substream only for non-zero channel streams + */ + err = snd_pcm_new(uac2->card, "UAC2 PCM", 0, + p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm); + if (err < 0) + goto snd_fail; + + strcpy(pcm->name, "UAC2 PCM"); + pcm->private_data = uac2; + + uac2->pcm = pcm; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac2_pcm_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac2_pcm_ops); + + strcpy(card->driver, "UAC2_Gadget"); + strcpy(card->shortname, "UAC2_Gadget"); + sprintf(card->longname, "UAC2_Gadget %i", pdev->id); + + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, + snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX); + + err = snd_card_register(card); + if (!err) { + platform_set_drvdata(pdev, card); + return 0; + } + +snd_fail: + snd_card_free(card); + + uac2->pcm = NULL; + uac2->card = NULL; + + return err; +} + +static int snd_uac2_remove(struct platform_device *pdev) +{ + struct snd_card *card = platform_get_drvdata(pdev); + + if (card) + return snd_card_free(card); + + return 0; +} + +static int alsa_uac2_init(struct audio_dev *agdev) +{ + struct snd_uac2_chip *uac2 = &agdev->uac2; + int err; + + uac2->pdrv.probe = snd_uac2_probe; + uac2->pdrv.remove = snd_uac2_remove; + uac2->pdrv.driver.name = uac2_name; + + uac2->pdev.id = 0; + uac2->pdev.name = uac2_name; + + /* Register snd_uac2 driver */ + err = platform_driver_register(&uac2->pdrv); + if (err) + return err; + + /* Register snd_uac2 device */ + err = platform_device_register(&uac2->pdev); + if (err) + platform_driver_unregister(&uac2->pdrv); + + return err; +} + +static void alsa_uac2_exit(struct audio_dev *agdev) +{ + struct snd_uac2_chip *uac2 = &agdev->uac2; + + platform_driver_unregister(&uac2->pdrv); + platform_device_unregister(&uac2->pdev); +} + + +/* --------- USB Function Interface ------------- */ + +enum { + STR_ASSOC, + STR_IF_CTRL, + STR_CLKSRC_IN, + STR_CLKSRC_OUT, + STR_USB_IT, + STR_IO_IT, + STR_USB_OT, + STR_IO_OT, + STR_AS_OUT_ALT0, + STR_AS_OUT_ALT1, + STR_AS_IN_ALT0, + STR_AS_IN_ALT1, +}; + +static char clksrc_in[8]; +static char clksrc_out[8]; + +static struct usb_string strings_fn[] = { + [STR_ASSOC].s = "Source/Sink", + [STR_IF_CTRL].s = "Topology Control", + [STR_CLKSRC_IN].s = clksrc_in, + [STR_CLKSRC_OUT].s = clksrc_out, + [STR_USB_IT].s = "USBH Out", + [STR_IO_IT].s = "USBD Out", + [STR_USB_OT].s = "USBH In", + [STR_IO_OT].s = "USBD In", + [STR_AS_OUT_ALT0].s = "Playback Inactive", + [STR_AS_OUT_ALT1].s = "Playback Active", + [STR_AS_IN_ALT0].s = "Capture Inactive", + [STR_AS_IN_ALT1].s = "Capture Active", + { }, +}; + +static struct usb_gadget_strings str_fn = { + .language = 0x0409, /* en-us */ + .strings = strings_fn, +}; + +static struct usb_gadget_strings *fn_strings[] = { + &str_fn, + NULL, +}; + +static struct usb_qualifier_descriptor devqual_desc = { + .bLength = sizeof devqual_desc, + .bDescriptorType = USB_DT_DEVICE_QUALIFIER, + + .bcdUSB = cpu_to_le16(0x200), + .bDeviceClass = USB_CLASS_MISC, + .bDeviceSubClass = 0x02, + .bDeviceProtocol = 0x01, + .bNumConfigurations = 1, + .bRESERVED = 0, +}; + +static struct usb_interface_assoc_descriptor iad_desc = { + .bLength = sizeof iad_desc, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + + .bFirstInterface = 0, + .bInterfaceCount = 3, + .bFunctionClass = USB_CLASS_AUDIO, + .bFunctionSubClass = UAC2_FUNCTION_SUBCLASS_UNDEFINED, + .bFunctionProtocol = UAC_VERSION_2, +}; + +/* Audio Control Interface */ +static struct usb_interface_descriptor std_ac_if_desc = { + .bLength = sizeof std_ac_if_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, + .bInterfaceProtocol = UAC_VERSION_2, +}; + +/* Clock source for IN traffic */ +struct uac_clock_source_descriptor in_clk_src_desc = { + .bLength = sizeof in_clk_src_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC2_CLOCK_SOURCE, + .bClockID = USB_IN_CLK_ID, + .bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED, + .bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL), + .bAssocTerminal = 0, +}; + +/* Clock source for OUT traffic */ +struct uac_clock_source_descriptor out_clk_src_desc = { + .bLength = sizeof out_clk_src_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC2_CLOCK_SOURCE, + .bClockID = USB_OUT_CLK_ID, + .bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED, + .bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL), + .bAssocTerminal = 0, +}; + +/* Input Terminal for USB_OUT */ +struct uac2_input_terminal_descriptor usb_out_it_desc = { + .bLength = sizeof usb_out_it_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_INPUT_TERMINAL, + .bTerminalID = USB_OUT_IT_ID, + .wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING), + .bAssocTerminal = 0, + .bCSourceID = USB_OUT_CLK_ID, + .iChannelNames = 0, + .bmControls = (CONTROL_RDWR << COPY_CTRL), +}; + +/* Input Terminal for I/O-In */ +struct uac2_input_terminal_descriptor io_in_it_desc = { + .bLength = sizeof io_in_it_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_INPUT_TERMINAL, + .bTerminalID = IO_IN_IT_ID, + .wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_UNDEFINED), + .bAssocTerminal = 0, + .bCSourceID = USB_IN_CLK_ID, + .iChannelNames = 0, + .bmControls = (CONTROL_RDWR << COPY_CTRL), +}; + +/* Ouput Terminal for USB_IN */ +struct uac2_output_terminal_descriptor usb_in_ot_desc = { + .bLength = sizeof usb_in_ot_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, + .bTerminalID = USB_IN_OT_ID, + .wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING), + .bAssocTerminal = 0, + .bSourceID = IO_IN_IT_ID, + .bCSourceID = USB_IN_CLK_ID, + .bmControls = (CONTROL_RDWR << COPY_CTRL), +}; + +/* Ouput Terminal for I/O-Out */ +struct uac2_output_terminal_descriptor io_out_ot_desc = { + .bLength = sizeof io_out_ot_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, + .bTerminalID = IO_OUT_OT_ID, + .wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_UNDEFINED), + .bAssocTerminal = 0, + .bSourceID = USB_OUT_IT_ID, + .bCSourceID = USB_OUT_CLK_ID, + .bmControls = (CONTROL_RDWR << COPY_CTRL), +}; + +struct uac2_ac_header_descriptor ac_hdr_desc = { + .bLength = sizeof ac_hdr_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_MS_HEADER, + .bcdADC = cpu_to_le16(0x200), + .bCategory = UAC2_FUNCTION_IO_BOX, + .wTotalLength = sizeof in_clk_src_desc + sizeof out_clk_src_desc + + sizeof usb_out_it_desc + sizeof io_in_it_desc + + sizeof usb_in_ot_desc + sizeof io_out_ot_desc, + .bmControls = 0, +}; + +/* Audio Streaming OUT Interface - Alt0 */ +static struct usb_interface_descriptor std_as_out_if0_desc = { + .bLength = sizeof std_as_out_if0_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, + .bInterfaceProtocol = UAC_VERSION_2, +}; + +/* Audio Streaming OUT Interface - Alt1 */ +static struct usb_interface_descriptor std_as_out_if1_desc = { + .bLength = sizeof std_as_out_if1_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, + .bInterfaceProtocol = UAC_VERSION_2, +}; + +/* Audio Stream OUT Intface Desc */ +struct uac2_as_header_descriptor as_out_hdr_desc = { + .bLength = sizeof as_out_hdr_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_AS_GENERAL, + .bTerminalLink = USB_OUT_IT_ID, + .bmControls = 0, + .bFormatType = UAC_FORMAT_TYPE_I, + .bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM), + .iChannelNames = 0, +}; + +/* Audio USB_OUT Format */ +struct uac2_format_type_i_descriptor as_out_fmt1_desc = { + .bLength = sizeof as_out_fmt1_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_FORMAT_TYPE, + .bFormatType = UAC_FORMAT_TYPE_I, +}; + +/* STD AS ISO OUT Endpoint */ +struct usb_endpoint_descriptor fs_epout_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, + .bInterval = 1, +}; + +struct usb_endpoint_descriptor hs_epout_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, + .bInterval = 4, +}; + +/* CS AS ISO OUT Endpoint */ +static struct uac2_iso_endpoint_descriptor as_iso_out_desc = { + .bLength = sizeof as_iso_out_desc, + .bDescriptorType = USB_DT_CS_ENDPOINT, + + .bDescriptorSubtype = UAC_EP_GENERAL, + .bmAttributes = 0, + .bmControls = 0, + .bLockDelayUnits = 0, + .wLockDelay = 0, +}; + +/* Audio Streaming IN Interface - Alt0 */ +static struct usb_interface_descriptor std_as_in_if0_desc = { + .bLength = sizeof std_as_in_if0_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, + .bInterfaceProtocol = UAC_VERSION_2, +}; + +/* Audio Streaming IN Interface - Alt1 */ +static struct usb_interface_descriptor std_as_in_if1_desc = { + .bLength = sizeof std_as_in_if1_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, + .bInterfaceProtocol = UAC_VERSION_2, +}; + +/* Audio Stream IN Intface Desc */ +struct uac2_as_header_descriptor as_in_hdr_desc = { + .bLength = sizeof as_in_hdr_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + + .bDescriptorSubtype = UAC_AS_GENERAL, + .bTerminalLink = USB_IN_OT_ID, + .bmControls = 0, + .bFormatType = UAC_FORMAT_TYPE_I, + .bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM), + .iChannelNames = 0, +}; + +/* Audio USB_IN Format */ +struct uac2_format_type_i_descriptor as_in_fmt1_desc = { + .bLength = sizeof as_in_fmt1_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = UAC_FORMAT_TYPE, + .bFormatType = UAC_FORMAT_TYPE_I, +}; + +/* STD AS ISO IN Endpoint */ +struct usb_endpoint_descriptor fs_epin_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, + .bInterval = 1, +}; + +struct usb_endpoint_descriptor hs_epin_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, + .bInterval = 4, +}; + +/* CS AS ISO IN Endpoint */ +static struct uac2_iso_endpoint_descriptor as_iso_in_desc = { + .bLength = sizeof as_iso_in_desc, + .bDescriptorType = USB_DT_CS_ENDPOINT, + + .bDescriptorSubtype = UAC_EP_GENERAL, + .bmAttributes = 0, + .bmControls = 0, + .bLockDelayUnits = 0, + .wLockDelay = 0, +}; + +static struct usb_descriptor_header *fs_audio_desc[] = { + (struct usb_descriptor_header *)&iad_desc, + (struct usb_descriptor_header *)&std_ac_if_desc, + + (struct usb_descriptor_header *)&ac_hdr_desc, + (struct usb_descriptor_header *)&in_clk_src_desc, + (struct usb_descriptor_header *)&out_clk_src_desc, + (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&io_in_it_desc, + (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&io_out_ot_desc, + + (struct usb_descriptor_header *)&std_as_out_if0_desc, + (struct usb_descriptor_header *)&std_as_out_if1_desc, + + (struct usb_descriptor_header *)&as_out_hdr_desc, + (struct usb_descriptor_header *)&as_out_fmt1_desc, + (struct usb_descriptor_header *)&fs_epout_desc, + (struct usb_descriptor_header *)&as_iso_out_desc, + + (struct usb_descriptor_header *)&std_as_in_if0_desc, + (struct usb_descriptor_header *)&std_as_in_if1_desc, + + (struct usb_descriptor_header *)&as_in_hdr_desc, + (struct usb_descriptor_header *)&as_in_fmt1_desc, + (struct usb_descriptor_header *)&fs_epin_desc, + (struct usb_descriptor_header *)&as_iso_in_desc, + NULL, +}; + +static struct usb_descriptor_header *hs_audio_desc[] = { + (struct usb_descriptor_header *)&iad_desc, + (struct usb_descriptor_header *)&std_ac_if_desc, + + (struct usb_descriptor_header *)&ac_hdr_desc, + (struct usb_descriptor_header *)&in_clk_src_desc, + (struct usb_descriptor_header *)&out_clk_src_desc, + (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&io_in_it_desc, + (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&io_out_ot_desc, + + (struct usb_descriptor_header *)&std_as_out_if0_desc, + (struct usb_descriptor_header *)&std_as_out_if1_desc, + + (struct usb_descriptor_header *)&as_out_hdr_desc, + (struct usb_descriptor_header *)&as_out_fmt1_desc, + (struct usb_descriptor_header *)&hs_epout_desc, + (struct usb_descriptor_header *)&as_iso_out_desc, + + (struct usb_descriptor_header *)&std_as_in_if0_desc, + (struct usb_descriptor_header *)&std_as_in_if1_desc, + + (struct usb_descriptor_header *)&as_in_hdr_desc, + (struct usb_descriptor_header *)&as_in_fmt1_desc, + (struct usb_descriptor_header *)&hs_epin_desc, + (struct usb_descriptor_header *)&as_iso_in_desc, + NULL, +}; + +struct cntrl_cur_lay3 { + __u32 dCUR; +}; + +struct cntrl_range_lay3 { + __u16 wNumSubRanges; + __u32 dMIN; + __u32 dMAX; + __u32 dRES; +} __packed; + +static inline void +free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep) +{ + struct snd_uac2_chip *uac2 = prm->uac2; + int i; + + prm->ep_enabled = false; + + for (i = 0; i < USB_XFERS; i++) { + if (prm->ureq[i].req) { + usb_ep_dequeue(ep, prm->ureq[i].req); + usb_ep_free_request(ep, prm->ureq[i].req); + prm->ureq[i].req = NULL; + } + } + + if (usb_ep_disable(ep)) + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); +} + +static int __init +afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) +{ + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + struct usb_composite_dev *cdev = cfg->cdev; + struct usb_gadget *gadget = cdev->gadget; + struct uac2_rtd_params *prm; + int ret; + + ret = usb_interface_id(cfg, fn); + if (ret < 0) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return ret; + } + std_ac_if_desc.bInterfaceNumber = ret; + agdev->ac_intf = ret; + agdev->ac_alt = 0; + + ret = usb_interface_id(cfg, fn); + if (ret < 0) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return ret; + } + std_as_out_if0_desc.bInterfaceNumber = ret; + std_as_out_if1_desc.bInterfaceNumber = ret; + agdev->as_out_intf = ret; + agdev->as_out_alt = 0; + + ret = usb_interface_id(cfg, fn); + if (ret < 0) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return ret; + } + std_as_in_if0_desc.bInterfaceNumber = ret; + std_as_in_if1_desc.bInterfaceNumber = ret; + agdev->as_in_intf = ret; + agdev->as_in_alt = 0; + + agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc); + if (!agdev->out_ep) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + goto err; + } + agdev->out_ep->driver_data = agdev; + + agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc); + if (!agdev->in_ep) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + goto err; + } + agdev->in_ep->driver_data = agdev; + + uac2->p_prm.uac2 = uac2; + uac2->c_prm.uac2 = uac2; + + hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; + hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize; + hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; + hs_epin_desc.wMaxPacketSize = fs_epin_desc.wMaxPacketSize; + + ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, NULL); + if (ret) + goto err; + + prm = &agdev->uac2.c_prm; + prm->max_psize = hs_epout_desc.wMaxPacketSize; + prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL); + if (!prm->rbuf) { + prm->max_psize = 0; + goto err; + } + + prm = &agdev->uac2.p_prm; + prm->max_psize = hs_epin_desc.wMaxPacketSize; + prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL); + if (!prm->rbuf) { + prm->max_psize = 0; + goto err; + } + + ret = alsa_uac2_init(agdev); + if (ret) + goto err; + return 0; +err: + kfree(agdev->uac2.p_prm.rbuf); + kfree(agdev->uac2.c_prm.rbuf); + usb_free_all_descriptors(fn); + if (agdev->in_ep) + agdev->in_ep->driver_data = NULL; + if (agdev->out_ep) + agdev->out_ep->driver_data = NULL; + return -EINVAL; +} + +static void +afunc_unbind(struct usb_configuration *cfg, struct usb_function *fn) +{ + struct audio_dev *agdev = func_to_agdev(fn); + struct uac2_rtd_params *prm; + + alsa_uac2_exit(agdev); + + prm = &agdev->uac2.p_prm; + kfree(prm->rbuf); + + prm = &agdev->uac2.c_prm; + kfree(prm->rbuf); + usb_free_all_descriptors(fn); + + if (agdev->in_ep) + agdev->in_ep->driver_data = NULL; + if (agdev->out_ep) + agdev->out_ep->driver_data = NULL; +} + +static int +afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) +{ + struct usb_composite_dev *cdev = fn->config->cdev; + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + struct usb_gadget *gadget = cdev->gadget; + struct usb_request *req; + struct usb_ep *ep; + struct uac2_rtd_params *prm; + int i; + + /* No i/f has more than 2 alt settings */ + if (alt > 1) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + + if (intf == agdev->ac_intf) { + /* Control I/f has only 1 AltSetting - 0 */ + if (alt) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + return 0; + } + + if (intf == agdev->as_out_intf) { + ep = agdev->out_ep; + prm = &uac2->c_prm; + config_ep_by_speed(gadget, fn, ep); + agdev->as_out_alt = alt; + } else if (intf == agdev->as_in_intf) { + ep = agdev->in_ep; + prm = &uac2->p_prm; + config_ep_by_speed(gadget, fn, ep); + agdev->as_in_alt = alt; + } else { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + + if (alt == 0) { + free_ep(prm, ep); + return 0; + } + + prm->ep_enabled = true; + usb_ep_enable(ep); + + for (i = 0; i < USB_XFERS; i++) { + if (prm->ureq[i].req) { + if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC)) + dev_err(&uac2->pdev.dev, "%d Error!\n", + __LINE__); + continue; + } + + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req == NULL) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return -EINVAL; + } + + prm->ureq[i].req = req; + prm->ureq[i].pp = prm; + + req->zero = 0; + req->context = &prm->ureq[i]; + req->length = prm->max_psize; + req->complete = agdev_iso_complete; + req->buf = prm->rbuf + i * req->length; + + if (usb_ep_queue(ep, req, GFP_ATOMIC)) + dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); + } + + return 0; +} + +static int +afunc_get_alt(struct usb_function *fn, unsigned intf) +{ + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + + if (intf == agdev->ac_intf) + return agdev->ac_alt; + else if (intf == agdev->as_out_intf) + return agdev->as_out_alt; + else if (intf == agdev->as_in_intf) + return agdev->as_in_alt; + else + dev_err(&uac2->pdev.dev, + "%s:%d Invalid Interface %d!\n", + __func__, __LINE__, intf); + + return -EINVAL; +} + +static void +afunc_disable(struct usb_function *fn) +{ + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + + free_ep(&uac2->p_prm, agdev->in_ep); + agdev->as_in_alt = 0; + + free_ep(&uac2->c_prm, agdev->out_ep); + agdev->as_out_alt = 0; +} + +static int +in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + int value = -EOPNOTSUPP; + + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { + struct cntrl_cur_lay3 c; + + if (entity_id == USB_IN_CLK_ID) + c.dCUR = p_srate; + else if (entity_id == USB_OUT_CLK_ID) + c.dCUR = c_srate; + + value = min_t(unsigned, w_length, sizeof c); + memcpy(req->buf, &c, value); + } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { + *(u8 *)req->buf = 1; + value = min_t(unsigned, w_length, 1); + } else { + dev_err(&uac2->pdev.dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + + return value; +} + +static int +in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_request *req = fn->config->cdev->req; + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + struct cntrl_range_lay3 r; + int value = -EOPNOTSUPP; + + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { + if (entity_id == USB_IN_CLK_ID) + r.dMIN = p_srate; + else if (entity_id == USB_OUT_CLK_ID) + r.dMIN = c_srate; + else + return -EOPNOTSUPP; + + r.dMAX = r.dMIN; + r.dRES = 0; + r.wNumSubRanges = 1; + + value = min_t(unsigned, w_length, sizeof r); + memcpy(req->buf, &r, value); + } else { + dev_err(&uac2->pdev.dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + + return value; +} + +static int +ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + if (cr->bRequest == UAC2_CS_CUR) + return in_rq_cur(fn, cr); + else if (cr->bRequest == UAC2_CS_RANGE) + return in_rq_range(fn, cr); + else + return -EOPNOTSUPP; +} + +static int +out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + u16 w_length = le16_to_cpu(cr->wLength); + u16 w_value = le16_to_cpu(cr->wValue); + u8 control_selector = w_value >> 8; + + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) + return w_length; + + return -EOPNOTSUPP; +} + +static int +setup_rq_inf(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + u16 w_index = le16_to_cpu(cr->wIndex); + u8 intf = w_index & 0xff; + + if (intf != agdev->ac_intf) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + return -EOPNOTSUPP; + } + + if (cr->bRequestType & USB_DIR_IN) + return ac_rq_in(fn, cr); + else if (cr->bRequest == UAC2_CS_CUR) + return out_rq_cur(fn, cr); + + return -EOPNOTSUPP; +} + +static int +afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr) +{ + struct usb_composite_dev *cdev = fn->config->cdev; + struct audio_dev *agdev = func_to_agdev(fn); + struct snd_uac2_chip *uac2 = &agdev->uac2; + struct usb_request *req = cdev->req; + u16 w_length = le16_to_cpu(cr->wLength); + int value = -EOPNOTSUPP; + + /* Only Class specific requests are supposed to reach here */ + if ((cr->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) + return -EOPNOTSUPP; + + if ((cr->bRequestType & USB_RECIP_MASK) == USB_RECIP_INTERFACE) + value = setup_rq_inf(fn, cr); + else + dev_err(&uac2->pdev.dev, "%s:%d Error!\n", __func__, __LINE__); + + if (value >= 0) { + req->length = value; + req->zero = value < w_length; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) { + dev_err(&uac2->pdev.dev, + "%s:%d Error!\n", __func__, __LINE__); + req->status = 0; + } + } + + return value; +} + +static int audio_bind_config(struct usb_configuration *cfg) +{ + int res; + + agdev_g = kzalloc(sizeof *agdev_g, GFP_KERNEL); + if (agdev_g == NULL) + return -ENOMEM; + + res = usb_string_ids_tab(cfg->cdev, strings_fn); + if (res) + return res; + iad_desc.iFunction = strings_fn[STR_ASSOC].id; + std_ac_if_desc.iInterface = strings_fn[STR_IF_CTRL].id; + in_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_IN].id; + out_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_OUT].id; + usb_out_it_desc.iTerminal = strings_fn[STR_USB_IT].id; + io_in_it_desc.iTerminal = strings_fn[STR_IO_IT].id; + usb_in_ot_desc.iTerminal = strings_fn[STR_USB_OT].id; + io_out_ot_desc.iTerminal = strings_fn[STR_IO_OT].id; + std_as_out_if0_desc.iInterface = strings_fn[STR_AS_OUT_ALT0].id; + std_as_out_if1_desc.iInterface = strings_fn[STR_AS_OUT_ALT1].id; + std_as_in_if0_desc.iInterface = strings_fn[STR_AS_IN_ALT0].id; + std_as_in_if1_desc.iInterface = strings_fn[STR_AS_IN_ALT1].id; + + agdev_g->func.name = "uac2_func"; + agdev_g->func.strings = fn_strings; + agdev_g->func.bind = afunc_bind; + agdev_g->func.unbind = afunc_unbind; + agdev_g->func.set_alt = afunc_set_alt; + agdev_g->func.get_alt = afunc_get_alt; + agdev_g->func.disable = afunc_disable; + agdev_g->func.setup = afunc_setup; + + /* Initialize the configurable parameters */ + usb_out_it_desc.bNrChannels = num_channels(c_chmask); + usb_out_it_desc.bmChannelConfig = cpu_to_le32(c_chmask); + io_in_it_desc.bNrChannels = num_channels(p_chmask); + io_in_it_desc.bmChannelConfig = cpu_to_le32(p_chmask); + as_out_hdr_desc.bNrChannels = num_channels(c_chmask); + as_out_hdr_desc.bmChannelConfig = cpu_to_le32(c_chmask); + as_in_hdr_desc.bNrChannels = num_channels(p_chmask); + as_in_hdr_desc.bmChannelConfig = cpu_to_le32(p_chmask); + as_out_fmt1_desc.bSubslotSize = c_ssize; + as_out_fmt1_desc.bBitResolution = c_ssize * 8; + as_in_fmt1_desc.bSubslotSize = p_ssize; + as_in_fmt1_desc.bBitResolution = p_ssize * 8; + + snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", p_srate); + snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", c_srate); + + res = usb_add_function(cfg, &agdev_g->func); + if (res < 0) + kfree(agdev_g); + + return res; +} + +static void +uac2_unbind_config(struct usb_configuration *cfg) +{ + kfree(agdev_g); + agdev_g = NULL; +} diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c index 2022fe49214..e2a1f50bd93 100644 --- a/drivers/usb/gadget/f_uvc.c +++ b/drivers/usb/gadget/f_uvc.c @@ -16,6 +16,7 @@ #include <linux/fs.h> #include <linux/list.h> #include <linux/mutex.h> +#include <linux/string.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/video.h> @@ -29,19 +30,32 @@ unsigned int uvc_gadget_trace_param; +/*-------------------------------------------------------------------------*/ + +/* module parameters specific to the Video streaming endpoint */ +static unsigned int streaming_interval = 1; +module_param(streaming_interval, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_interval, "1 - 16"); + +static unsigned int streaming_maxpacket = 1024; +module_param(streaming_maxpacket, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_maxpacket, "1 - 1023 (FS), 1 - 3072 (hs/ss)"); + +static unsigned int streaming_maxburst; +module_param(streaming_maxburst, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_maxburst, "0 - 15 (ss only)"); + /* -------------------------------------------------------------------------- * Function descriptors */ /* string IDs are assigned dynamically */ -#define UVC_STRING_ASSOCIATION_IDX 0 -#define UVC_STRING_CONTROL_IDX 1 -#define UVC_STRING_STREAMING_IDX 2 +#define UVC_STRING_CONTROL_IDX 0 +#define UVC_STRING_STREAMING_IDX 1 static struct usb_string uvc_en_us_strings[] = { - [UVC_STRING_ASSOCIATION_IDX].s = "UVC Camera", - [UVC_STRING_CONTROL_IDX].s = "Video Control", + [UVC_STRING_CONTROL_IDX].s = "UVC Camera", [UVC_STRING_STREAMING_IDX].s = "Video Streaming", { } }; @@ -59,6 +73,8 @@ static struct usb_gadget_strings *uvc_function_strings[] = { #define UVC_INTF_VIDEO_CONTROL 0 #define UVC_INTF_VIDEO_STREAMING 1 +#define UVC_STATUS_MAX_PACKET_SIZE 16 /* 16 bytes status */ + static struct usb_interface_assoc_descriptor uvc_iad __initdata = { .bLength = sizeof(uvc_iad), .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, @@ -87,15 +103,24 @@ static struct usb_endpoint_descriptor uvc_control_ep __initdata = { .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(16), + .wMaxPacketSize = cpu_to_le16(UVC_STATUS_MAX_PACKET_SIZE), .bInterval = 8, }; +static struct usb_ss_ep_comp_descriptor uvc_ss_control_comp __initdata = { + .bLength = sizeof(uvc_ss_control_comp), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + /* The following 3 values can be tweaked if necessary. */ + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = cpu_to_le16(UVC_STATUS_MAX_PACKET_SIZE), +}; + static struct uvc_control_endpoint_descriptor uvc_control_cs_ep __initdata = { .bLength = UVC_DT_CONTROL_ENDPOINT_SIZE, .bDescriptorType = USB_DT_CS_ENDPOINT, .bDescriptorSubType = UVC_EP_INTERRUPT, - .wMaxTransferSize = cpu_to_le16(16), + .wMaxTransferSize = cpu_to_le16(UVC_STATUS_MAX_PACKET_SIZE), }; static struct usb_interface_descriptor uvc_streaming_intf_alt0 __initdata = { @@ -122,24 +147,64 @@ static struct usb_interface_descriptor uvc_streaming_intf_alt1 __initdata = { .iInterface = 0, }; -static struct usb_endpoint_descriptor uvc_streaming_ep = { +static struct usb_endpoint_descriptor uvc_fs_streaming_ep __initdata = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_ISOC, - .wMaxPacketSize = cpu_to_le16(512), - .bInterval = 1, + .bmAttributes = USB_ENDPOINT_SYNC_ASYNC + | USB_ENDPOINT_XFER_ISOC, + /* The wMaxPacketSize and bInterval values will be initialized from + * module parameters. + */ +}; + +static struct usb_endpoint_descriptor uvc_hs_streaming_ep __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_SYNC_ASYNC + | USB_ENDPOINT_XFER_ISOC, + /* The wMaxPacketSize and bInterval values will be initialized from + * module parameters. + */ +}; + +static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_SYNC_ASYNC + | USB_ENDPOINT_XFER_ISOC, + /* The wMaxPacketSize and bInterval values will be initialized from + * module parameters. + */ +}; + +static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp __initdata = { + .bLength = sizeof(uvc_ss_streaming_comp), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + /* The bMaxBurst, bmAttributes and wBytesPerInterval values will be + * initialized from module parameters. + */ }; static const struct usb_descriptor_header * const uvc_fs_streaming[] = { (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, - (struct usb_descriptor_header *) &uvc_streaming_ep, + (struct usb_descriptor_header *) &uvc_fs_streaming_ep, NULL, }; static const struct usb_descriptor_header * const uvc_hs_streaming[] = { (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, - (struct usb_descriptor_header *) &uvc_streaming_ep, + (struct usb_descriptor_header *) &uvc_hs_streaming_ep, + NULL, +}; + +static const struct usb_descriptor_header * const uvc_ss_streaming[] = { + (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, + (struct usb_descriptor_header *) &uvc_ss_streaming_ep, + (struct usb_descriptor_header *) &uvc_ss_streaming_comp, NULL, }; @@ -194,6 +259,13 @@ uvc_function_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) return 0; } +void uvc_function_setup_continue(struct uvc_device *uvc) +{ + struct usb_composite_dev *cdev = uvc->func.config->cdev; + + usb_composite_setup_continue(cdev); +} + static int uvc_function_get_alt(struct usb_function *f, unsigned interface) { @@ -215,6 +287,7 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) struct uvc_device *uvc = to_uvc(f); struct v4l2_event v4l2_event; struct uvc_event *uvc_event = (void *)&v4l2_event.u.data; + int ret; INFO(f->config->cdev, "uvc_function_set_alt(%u, %u)\n", interface, alt); @@ -255,29 +328,28 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) v4l2_event_queue(uvc->vdev, &v4l2_event); uvc->state = UVC_STATE_CONNECTED; - break; + return 0; case 1: if (uvc->state != UVC_STATE_CONNECTED) return 0; if (uvc->video.ep) { - uvc->video.ep->desc = &uvc_streaming_ep; + ret = config_ep_by_speed(f->config->cdev->gadget, + &(uvc->func), uvc->video.ep); + if (ret) + return ret; usb_ep_enable(uvc->video.ep); } memset(&v4l2_event, 0, sizeof(v4l2_event)); v4l2_event.type = UVC_EVENT_STREAMON; v4l2_event_queue(uvc->vdev, &v4l2_event); - - uvc->state = UVC_STATE_STREAMING; - break; + return USB_GADGET_DELAYED_STATUS; default: return -EINVAL; } - - return 0; } static void @@ -334,11 +406,10 @@ uvc_register_video(struct uvc_device *uvc) if (video == NULL) return -ENOMEM; - video->parent = &cdev->gadget->dev; - video->minor = -1; + video->v4l2_dev = &uvc->v4l2_dev; video->fops = &uvc_v4l2_fops; video->release = video_device_release; - strncpy(video->name, cdev->gadget->name, sizeof(video->name)); + strlcpy(video->name, cdev->gadget->name, sizeof(video->name)); uvc->vdev = video; video_set_drvdata(video, uvc); @@ -368,6 +439,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) { struct uvc_input_header_descriptor *uvc_streaming_header; struct uvc_header_descriptor *uvc_control_header; + const struct uvc_descriptor_header * const *uvc_control_desc; const struct uvc_descriptor_header * const *uvc_streaming_cls; const struct usb_descriptor_header * const *uvc_streaming_std; const struct usb_descriptor_header * const *src; @@ -379,10 +451,26 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) unsigned int bytes; void *mem; - uvc_streaming_cls = (speed == USB_SPEED_FULL) - ? uvc->desc.fs_streaming : uvc->desc.hs_streaming; - uvc_streaming_std = (speed == USB_SPEED_FULL) - ? uvc_fs_streaming : uvc_hs_streaming; + switch (speed) { + case USB_SPEED_SUPER: + uvc_control_desc = uvc->desc.ss_control; + uvc_streaming_cls = uvc->desc.ss_streaming; + uvc_streaming_std = uvc_ss_streaming; + break; + + case USB_SPEED_HIGH: + uvc_control_desc = uvc->desc.fs_control; + uvc_streaming_cls = uvc->desc.hs_streaming; + uvc_streaming_std = uvc_hs_streaming; + break; + + case USB_SPEED_FULL: + default: + uvc_control_desc = uvc->desc.fs_control; + uvc_streaming_cls = uvc->desc.fs_streaming; + uvc_streaming_std = uvc_fs_streaming; + break; + } /* Descriptors layout * @@ -391,6 +479,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) * Class-specific UVC control descriptors * uvc_control_ep * uvc_control_cs_ep + * uvc_ss_control_comp (for SS only) * uvc_streaming_intf_alt0 * Class-specific UVC streaming descriptors * uvc_{fs|hs}_streaming @@ -402,14 +491,22 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) bytes = uvc_iad.bLength + uvc_control_intf.bLength + uvc_control_ep.bLength + uvc_control_cs_ep.bLength + uvc_streaming_intf_alt0.bLength; - n_desc = 5; - for (src = (const struct usb_descriptor_header**)uvc->desc.control; *src; ++src) { + if (speed == USB_SPEED_SUPER) { + bytes += uvc_ss_control_comp.bLength; + n_desc = 6; + } else { + n_desc = 5; + } + + for (src = (const struct usb_descriptor_header **)uvc_control_desc; + *src; ++src) { control_size += (*src)->bLength; bytes += (*src)->bLength; n_desc++; } - for (src = (const struct usb_descriptor_header**)uvc_streaming_cls; *src; ++src) { + for (src = (const struct usb_descriptor_header **)uvc_streaming_cls; + *src; ++src) { streaming_size += (*src)->bLength; bytes += (*src)->bLength; n_desc++; @@ -433,12 +530,15 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) uvc_control_header = mem; UVC_COPY_DESCRIPTORS(mem, dst, - (const struct usb_descriptor_header**)uvc->desc.control); + (const struct usb_descriptor_header **)uvc_control_desc); uvc_control_header->wTotalLength = cpu_to_le16(control_size); uvc_control_header->bInCollection = 1; uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf; UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_ep); + if (speed == USB_SPEED_SUPER) + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_control_comp); + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_cs_ep); UVC_COPY_DESCRIPTOR(mem, dst, &uvc_streaming_intf_alt0); @@ -446,7 +546,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) UVC_COPY_DESCRIPTORS(mem, dst, (const struct usb_descriptor_header**)uvc_streaming_cls); uvc_streaming_header->wTotalLength = cpu_to_le16(streaming_size); - uvc_streaming_header->bEndpointAddress = uvc_streaming_ep.bEndpointAddress; + uvc_streaming_header->bEndpointAddress = uvc->video.ep->address; UVC_COPY_DESCRIPTORS(mem, dst, uvc_streaming_std); @@ -462,26 +562,16 @@ uvc_function_unbind(struct usb_configuration *c, struct usb_function *f) INFO(cdev, "uvc_function_unbind\n"); - if (uvc->vdev) { - if (uvc->vdev->minor == -1) - video_device_release(uvc->vdev); - else - video_unregister_device(uvc->vdev); - uvc->vdev = NULL; - } - - if (uvc->control_ep) - uvc->control_ep->driver_data = NULL; - if (uvc->video.ep) - uvc->video.ep->driver_data = NULL; + video_unregister_device(uvc->vdev); + v4l2_device_unregister(&uvc->v4l2_dev); + uvc->control_ep->driver_data = NULL; + uvc->video.ep->driver_data = NULL; - if (uvc->control_req) { - usb_ep_free_request(cdev->gadget->ep0, uvc->control_req); - kfree(uvc->control_buf); - } + uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = 0; + usb_ep_free_request(cdev->gadget->ep0, uvc->control_req); + kfree(uvc->control_buf); - kfree(f->descriptors); - kfree(f->hs_descriptors); + usb_free_all_descriptors(f); kfree(uvc); } @@ -491,11 +581,50 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct uvc_device *uvc = to_uvc(f); + unsigned int max_packet_mult; + unsigned int max_packet_size; struct usb_ep *ep; int ret = -EINVAL; INFO(cdev, "uvc_function_bind\n"); + /* Sanity check the streaming endpoint module parameters. + */ + streaming_interval = clamp(streaming_interval, 1U, 16U); + streaming_maxpacket = clamp(streaming_maxpacket, 1U, 3072U); + streaming_maxburst = min(streaming_maxburst, 15U); + + /* Fill in the FS/HS/SS Video Streaming specific descriptors from the + * module parameters. + * + * NOTE: We assume that the user knows what they are doing and won't + * give parameters that their UDC doesn't support. + */ + if (streaming_maxpacket <= 1024) { + max_packet_mult = 1; + max_packet_size = streaming_maxpacket; + } else if (streaming_maxpacket <= 2048) { + max_packet_mult = 2; + max_packet_size = streaming_maxpacket / 2; + } else { + max_packet_mult = 3; + max_packet_size = streaming_maxpacket / 3; + } + + uvc_fs_streaming_ep.wMaxPacketSize = min(streaming_maxpacket, 1023U); + uvc_fs_streaming_ep.bInterval = streaming_interval; + + uvc_hs_streaming_ep.wMaxPacketSize = max_packet_size; + uvc_hs_streaming_ep.wMaxPacketSize |= ((max_packet_mult - 1) << 11); + uvc_hs_streaming_ep.bInterval = streaming_interval; + + uvc_ss_streaming_ep.wMaxPacketSize = max_packet_size; + uvc_ss_streaming_ep.bInterval = streaming_interval; + uvc_ss_streaming_comp.bmAttributes = max_packet_mult - 1; + uvc_ss_streaming_comp.bMaxBurst = streaming_maxburst; + uvc_ss_streaming_comp.wBytesPerInterval = + max_packet_size * max_packet_mult * streaming_maxburst; + /* Allocate endpoints. */ ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep); if (!ep) { @@ -505,7 +634,14 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) uvc->control_ep = ep; ep->driver_data = uvc; - ep = usb_ep_autoconfig(cdev->gadget, &uvc_streaming_ep); + if (gadget_is_superspeed(c->cdev->gadget)) + ep = usb_ep_autoconfig_ss(cdev->gadget, &uvc_ss_streaming_ep, + &uvc_ss_streaming_comp); + else if (gadget_is_dualspeed(cdev->gadget)) + ep = usb_ep_autoconfig(cdev->gadget, &uvc_hs_streaming_ep); + else + ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep); + if (!ep) { INFO(cdev, "Unable to allocate streaming EP\n"); goto error; @@ -513,6 +649,10 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) uvc->video.ep = ep; ep->driver_data = uvc; + uvc_fs_streaming_ep.bEndpointAddress = uvc->video.ep->address; + uvc_hs_streaming_ep.bEndpointAddress = uvc->video.ep->address; + uvc_ss_streaming_ep.bEndpointAddress = uvc->video.ep->address; + /* Allocate interface IDs. */ if ((ret = usb_interface_id(c, f)) < 0) goto error; @@ -526,9 +666,12 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) uvc_streaming_intf_alt1.bInterfaceNumber = ret; uvc->streaming_intf = ret; - /* Copy descriptors. */ - f->descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL); - f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); + /* Copy descriptors */ + f->fs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL); + if (gadget_is_dualspeed(cdev->gadget)) + f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); + if (gadget_is_superspeed(c->cdev->gadget)) + f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER); /* Preallocate control endpoint request. */ uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL); @@ -548,6 +691,11 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) if ((ret = usb_function_deactivate(f)) < 0) goto error; + if (v4l2_device_register(&cdev->gadget->dev, &uvc->v4l2_dev)) { + printk(KERN_INFO "v4l2_device_register failed\n"); + goto error; + } + /* Initialise video. */ ret = uvc_video_init(&uvc->video); if (ret < 0) @@ -563,7 +711,21 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) return 0; error: - uvc_function_unbind(c, f); + v4l2_device_unregister(&uvc->v4l2_dev); + if (uvc->vdev) + video_device_release(uvc->vdev); + + if (uvc->control_ep) + uvc->control_ep->driver_data = NULL; + if (uvc->video.ep) + uvc->video.ep->driver_data = NULL; + + if (uvc->control_req) { + usb_ep_free_request(cdev->gadget->ep0, uvc->control_req); + kfree(uvc->control_buf); + } + + usb_free_all_descriptors(f); return ret; } @@ -583,9 +745,11 @@ error: */ int __init uvc_bind_config(struct usb_configuration *c, - const struct uvc_descriptor_header * const *control, + const struct uvc_descriptor_header * const *fs_control, + const struct uvc_descriptor_header * const *ss_control, const struct uvc_descriptor_header * const *fs_streaming, - const struct uvc_descriptor_header * const *hs_streaming) + const struct uvc_descriptor_header * const *hs_streaming, + const struct uvc_descriptor_header * const *ss_streaming) { struct uvc_device *uvc; int ret = 0; @@ -603,8 +767,12 @@ uvc_bind_config(struct usb_configuration *c, uvc->state = UVC_STATE_DISCONNECTED; /* Validate the descriptors. */ - if (control == NULL || control[0] == NULL || - control[0]->bDescriptorSubType != UVC_VC_HEADER) + if (fs_control == NULL || fs_control[0] == NULL || + fs_control[0]->bDescriptorSubType != UVC_VC_HEADER) + goto error; + + if (ss_control == NULL || ss_control[0] == NULL || + ss_control[0]->bDescriptorSubType != UVC_VC_HEADER) goto error; if (fs_streaming == NULL || fs_streaming[0] == NULL || @@ -615,26 +783,32 @@ uvc_bind_config(struct usb_configuration *c, hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) goto error; - uvc->desc.control = control; - uvc->desc.fs_streaming = fs_streaming; - uvc->desc.hs_streaming = hs_streaming; - - /* Allocate string descriptor numbers. */ - if ((ret = usb_string_id(c->cdev)) < 0) + if (ss_streaming == NULL || ss_streaming[0] == NULL || + ss_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) goto error; - uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret; - uvc_iad.iFunction = ret; - if ((ret = usb_string_id(c->cdev)) < 0) - goto error; - uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret; - uvc_control_intf.iInterface = ret; + uvc->desc.fs_control = fs_control; + uvc->desc.ss_control = ss_control; + uvc->desc.fs_streaming = fs_streaming; + uvc->desc.hs_streaming = hs_streaming; + uvc->desc.ss_streaming = ss_streaming; - if ((ret = usb_string_id(c->cdev)) < 0) - goto error; - uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret; - uvc_streaming_intf_alt0.iInterface = ret; - uvc_streaming_intf_alt1.iInterface = ret; + /* String descriptors are global, we only need to allocate string IDs + * for the first UVC function. UVC functions beyond the first (if any) + * will reuse the same IDs. + */ + if (uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id == 0) { + ret = usb_string_ids_tab(c->cdev, uvc_en_us_strings); + if (ret) + goto error; + uvc_iad.iFunction = + uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id; + uvc_control_intf.iInterface = + uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id; + ret = uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id; + uvc_streaming_intf_alt0.iInterface = ret; + uvc_streaming_intf_alt1.iInterface = ret; + } /* Register the function. */ uvc->func.name = "uvc"; diff --git a/drivers/usb/gadget/f_uvc.h b/drivers/usb/gadget/f_uvc.h index abf83293513..ec52752f732 100644 --- a/drivers/usb/gadget/f_uvc.h +++ b/drivers/usb/gadget/f_uvc.h @@ -16,10 +16,12 @@ #include <linux/usb/composite.h> #include <linux/usb/video.h> -extern int uvc_bind_config(struct usb_configuration *c, - const struct uvc_descriptor_header * const *control, - const struct uvc_descriptor_header * const *fs_streaming, - const struct uvc_descriptor_header * const *hs_streaming); +int uvc_bind_config(struct usb_configuration *c, + const struct uvc_descriptor_header * const *fs_control, + const struct uvc_descriptor_header * const *hs_control, + const struct uvc_descriptor_header * const *fs_streaming, + const struct uvc_descriptor_header * const *hs_streaming, + const struct uvc_descriptor_header * const *ss_streaming); #endif /* _F_UVC_H_ */ diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c deleted file mode 100644 index 47766f0e7ca..00000000000 --- a/drivers/usb/gadget/file_storage.c +++ /dev/null @@ -1,3676 +0,0 @@ -/* - * file_storage.c -- File-backed USB Storage Gadget, for USB development - * - * Copyright (C) 2003-2008 Alan Stern - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") as published by the Free Software - * Foundation, either version 2 of that License or (at your option) any - * later version. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - - -/* - * The File-backed Storage Gadget acts as a USB Mass Storage device, - * appearing to the host as a disk drive or as a CD-ROM drive. In addition - * to providing an example of a genuinely useful gadget driver for a USB - * device, it also illustrates a technique of double-buffering for increased - * throughput. Last but not least, it gives an easy way to probe the - * behavior of the Mass Storage drivers in a USB host. - * - * Backing storage is provided by a regular file or a block device, specified - * by the "file" module parameter. Access can be limited to read-only by - * setting the optional "ro" module parameter. (For CD-ROM emulation, - * access is always read-only.) The gadget will indicate that it has - * removable media if the optional "removable" module parameter is set. - * - * The gadget supports the Control-Bulk (CB), Control-Bulk-Interrupt (CBI), - * and Bulk-Only (also known as Bulk-Bulk-Bulk or BBB) transports, selected - * by the optional "transport" module parameter. It also supports the - * following protocols: RBC (0x01), ATAPI or SFF-8020i (0x02), QIC-157 (0c03), - * UFI (0x04), SFF-8070i (0x05), and transparent SCSI (0x06), selected by - * the optional "protocol" module parameter. In addition, the default - * Vendor ID, Product ID, release number and serial number can be overridden. - * - * There is support for multiple logical units (LUNs), each of which has - * its own backing file. The number of LUNs can be set using the optional - * "luns" module parameter (anywhere from 1 to 8), and the corresponding - * files are specified using comma-separated lists for "file" and "ro". - * The default number of LUNs is taken from the number of "file" elements; - * it is 1 if "file" is not given. If "removable" is not set then a backing - * file must be specified for each LUN. If it is set, then an unspecified - * or empty backing filename means the LUN's medium is not loaded. Ideally - * each LUN would be settable independently as a disk drive or a CD-ROM - * drive, but currently all LUNs have to be the same type. The CD-ROM - * emulation includes a single data track and no audio tracks; hence there - * need be only one backing file per LUN. - * - * Requirements are modest; only a bulk-in and a bulk-out endpoint are - * needed (an interrupt-out endpoint is also needed for CBI). The memory - * requirement amounts to two 16K buffers, size configurable by a parameter. - * Support is included for both full-speed and high-speed operation. - * - * Note that the driver is slightly non-portable in that it assumes a - * single memory/DMA buffer will be useable for bulk-in, bulk-out, and - * interrupt-in endpoints. With most device controllers this isn't an - * issue, but there may be some with hardware restrictions that prevent - * a buffer from being used by more than one endpoint. - * - * Module options: - * - * file=filename[,filename...] - * Required if "removable" is not set, names of - * the files or block devices used for - * backing storage - * serial=HHHH... Required serial number (string of hex chars) - * ro=b[,b...] Default false, booleans for read-only access - * removable Default false, boolean for removable media - * luns=N Default N = number of filenames, number of - * LUNs to support - * nofua=b[,b...] Default false, booleans for ignore FUA flag - * in SCSI WRITE(10,12) commands - * stall Default determined according to the type of - * USB device controller (usually true), - * boolean to permit the driver to halt - * bulk endpoints - * cdrom Default false, boolean for whether to emulate - * a CD-ROM drive - * transport=XXX Default BBB, transport name (CB, CBI, or BBB) - * protocol=YYY Default SCSI, protocol name (RBC, 8020 or - * ATAPI, QIC, UFI, 8070, or SCSI; - * also 1 - 6) - * vendor=0xVVVV Default 0x0525 (NetChip), USB Vendor ID - * product=0xPPPP Default 0xa4a5 (FSG), USB Product ID - * release=0xRRRR Override the USB release number (bcdDevice) - * buflen=N Default N=16384, buffer size used (will be - * rounded down to a multiple of - * PAGE_CACHE_SIZE) - * - * If CONFIG_USB_FILE_STORAGE_TEST is not set, only the "file", "serial", "ro", - * "removable", "luns", "nofua", "stall", and "cdrom" options are available; - * default values are used for everything else. - * - * The pathnames of the backing files and the ro settings are available in - * the attribute files "file", "nofua", and "ro" in the lun<n> subdirectory of - * the gadget's sysfs directory. If the "removable" option is set, writing to - * these files will simulate ejecting/loading the medium (writing an empty - * line means eject) and adjusting a write-enable tab. Changes to the ro - * setting are not allowed when the medium is loaded or if CD-ROM emulation - * is being used. - * - * This gadget driver is heavily based on "Gadget Zero" by David Brownell. - * The driver's SCSI command interface was based on the "Information - * technology - Small Computer System Interface - 2" document from - * X3T9.2 Project 375D, Revision 10L, 7-SEP-93, available at - * <http://www.t10.org/ftp/t10/drafts/s2/s2-r10l.pdf>. The single exception - * is opcode 0x23 (READ FORMAT CAPACITIES), which was based on the - * "Universal Serial Bus Mass Storage Class UFI Command Specification" - * document, Revision 1.0, December 14, 1998, available at - * <http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf>. - */ - - -/* - * Driver Design - * - * The FSG driver is fairly straightforward. There is a main kernel - * thread that handles most of the work. Interrupt routines field - * callbacks from the controller driver: bulk- and interrupt-request - * completion notifications, endpoint-0 events, and disconnect events. - * Completion events are passed to the main thread by wakeup calls. Many - * ep0 requests are handled at interrupt time, but SetInterface, - * SetConfiguration, and device reset requests are forwarded to the - * thread in the form of "exceptions" using SIGUSR1 signals (since they - * should interrupt any ongoing file I/O operations). - * - * The thread's main routine implements the standard command/data/status - * parts of a SCSI interaction. It and its subroutines are full of tests - * for pending signals/exceptions -- all this polling is necessary since - * the kernel has no setjmp/longjmp equivalents. (Maybe this is an - * indication that the driver really wants to be running in userspace.) - * An important point is that so long as the thread is alive it keeps an - * open reference to the backing file. This will prevent unmounting - * the backing file's underlying filesystem and could cause problems - * during system shutdown, for example. To prevent such problems, the - * thread catches INT, TERM, and KILL signals and converts them into - * an EXIT exception. - * - * In normal operation the main thread is started during the gadget's - * fsg_bind() callback and stopped during fsg_unbind(). But it can also - * exit when it receives a signal, and there's no point leaving the - * gadget running when the thread is dead. So just before the thread - * exits, it deregisters the gadget driver. This makes things a little - * tricky: The driver is deregistered at two places, and the exiting - * thread can indirectly call fsg_unbind() which in turn can tell the - * thread to exit. The first problem is resolved through the use of the - * REGISTERED atomic bitflag; the driver will only be deregistered once. - * The second problem is resolved by having fsg_unbind() check - * fsg->state; it won't try to stop the thread if the state is already - * FSG_STATE_TERMINATED. - * - * To provide maximum throughput, the driver uses a circular pipeline of - * buffer heads (struct fsg_buffhd). In principle the pipeline can be - * arbitrarily long; in practice the benefits don't justify having more - * than 2 stages (i.e., double buffering). But it helps to think of the - * pipeline as being a long one. Each buffer head contains a bulk-in and - * a bulk-out request pointer (since the buffer can be used for both - * output and input -- directions always are given from the host's - * point of view) as well as a pointer to the buffer and various state - * variables. - * - * Use of the pipeline follows a simple protocol. There is a variable - * (fsg->next_buffhd_to_fill) that points to the next buffer head to use. - * At any time that buffer head may still be in use from an earlier - * request, so each buffer head has a state variable indicating whether - * it is EMPTY, FULL, or BUSY. Typical use involves waiting for the - * buffer head to be EMPTY, filling the buffer either by file I/O or by - * USB I/O (during which the buffer head is BUSY), and marking the buffer - * head FULL when the I/O is complete. Then the buffer will be emptied - * (again possibly by USB I/O, during which it is marked BUSY) and - * finally marked EMPTY again (possibly by a completion routine). - * - * A module parameter tells the driver to avoid stalling the bulk - * endpoints wherever the transport specification allows. This is - * necessary for some UDCs like the SuperH, which cannot reliably clear a - * halt on a bulk endpoint. However, under certain circumstances the - * Bulk-only specification requires a stall. In such cases the driver - * will halt the endpoint and set a flag indicating that it should clear - * the halt in software during the next device reset. Hopefully this - * will permit everything to work correctly. Furthermore, although the - * specification allows the bulk-out endpoint to halt when the host sends - * too much data, implementing this would cause an unavoidable race. - * The driver will always use the "no-stall" approach for OUT transfers. - * - * One subtle point concerns sending status-stage responses for ep0 - * requests. Some of these requests, such as device reset, can involve - * interrupting an ongoing file I/O operation, which might take an - * arbitrarily long time. During that delay the host might give up on - * the original ep0 request and issue a new one. When that happens the - * driver should not notify the host about completion of the original - * request, as the host will no longer be waiting for it. So the driver - * assigns to each ep0 request a unique tag, and it keeps track of the - * tag value of the request associated with a long-running exception - * (device-reset, interface-change, or configuration-change). When the - * exception handler is finished, the status-stage response is submitted - * only if the current ep0 request tag is equal to the exception request - * tag. Thus only the most recently received ep0 request will get a - * status-stage response. - * - * Warning: This driver source file is too long. It ought to be split up - * into a header file plus about 3 separate .c files, to handle the details - * of the Gadget, USB Mass Storage, and SCSI protocols. - */ - - -/* #define VERBOSE_DEBUG */ -/* #define DUMP_MSGS */ - - -#include <linux/blkdev.h> -#include <linux/completion.h> -#include <linux/dcache.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/fcntl.h> -#include <linux/file.h> -#include <linux/fs.h> -#include <linux/kref.h> -#include <linux/kthread.h> -#include <linux/limits.h> -#include <linux/module.h> -#include <linux/rwsem.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/string.h> -#include <linux/freezer.h> -#include <linux/utsname.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include "gadget_chips.h" - - - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -/*-------------------------------------------------------------------------*/ - -#define DRIVER_DESC "File-backed Storage Gadget" -#define DRIVER_NAME "g_file_storage" -#define DRIVER_VERSION "1 September 2010" - -static char fsg_string_manufacturer[64]; -static const char fsg_string_product[] = DRIVER_DESC; -static const char fsg_string_config[] = "Self-powered"; -static const char fsg_string_interface[] = "Mass Storage"; - - -#include "storage_common.c" - - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Alan Stern"); -MODULE_LICENSE("Dual BSD/GPL"); - -/* - * This driver assumes self-powered hardware and has no way for users to - * trigger remote wakeup. It uses autoconfiguration to select endpoints - * and endpoint addresses. - */ - - -/*-------------------------------------------------------------------------*/ - - -/* Encapsulate the module parameter settings */ - -static struct { - char *file[FSG_MAX_LUNS]; - char *serial; - bool ro[FSG_MAX_LUNS]; - bool nofua[FSG_MAX_LUNS]; - unsigned int num_filenames; - unsigned int num_ros; - unsigned int num_nofuas; - unsigned int nluns; - - bool removable; - bool can_stall; - bool cdrom; - - char *transport_parm; - char *protocol_parm; - unsigned short vendor; - unsigned short product; - unsigned short release; - unsigned int buflen; - - int transport_type; - char *transport_name; - int protocol_type; - char *protocol_name; - -} mod_data = { // Default values - .transport_parm = "BBB", - .protocol_parm = "SCSI", - .removable = 0, - .can_stall = 1, - .cdrom = 0, - .vendor = FSG_VENDOR_ID, - .product = FSG_PRODUCT_ID, - .release = 0xffff, // Use controller chip type - .buflen = 16384, - }; - - -module_param_array_named(file, mod_data.file, charp, &mod_data.num_filenames, - S_IRUGO); -MODULE_PARM_DESC(file, "names of backing files or devices"); - -module_param_named(serial, mod_data.serial, charp, S_IRUGO); -MODULE_PARM_DESC(serial, "USB serial number"); - -module_param_array_named(ro, mod_data.ro, bool, &mod_data.num_ros, S_IRUGO); -MODULE_PARM_DESC(ro, "true to force read-only"); - -module_param_array_named(nofua, mod_data.nofua, bool, &mod_data.num_nofuas, - S_IRUGO); -MODULE_PARM_DESC(nofua, "true to ignore SCSI WRITE(10,12) FUA bit"); - -module_param_named(luns, mod_data.nluns, uint, S_IRUGO); -MODULE_PARM_DESC(luns, "number of LUNs"); - -module_param_named(removable, mod_data.removable, bool, S_IRUGO); -MODULE_PARM_DESC(removable, "true to simulate removable media"); - -module_param_named(stall, mod_data.can_stall, bool, S_IRUGO); -MODULE_PARM_DESC(stall, "false to prevent bulk stalls"); - -module_param_named(cdrom, mod_data.cdrom, bool, S_IRUGO); -MODULE_PARM_DESC(cdrom, "true to emulate cdrom instead of disk"); - -/* In the non-TEST version, only the module parameters listed above - * are available. */ -#ifdef CONFIG_USB_FILE_STORAGE_TEST - -module_param_named(transport, mod_data.transport_parm, charp, S_IRUGO); -MODULE_PARM_DESC(transport, "type of transport (BBB, CBI, or CB)"); - -module_param_named(protocol, mod_data.protocol_parm, charp, S_IRUGO); -MODULE_PARM_DESC(protocol, "type of protocol (RBC, 8020, QIC, UFI, " - "8070, or SCSI)"); - -module_param_named(vendor, mod_data.vendor, ushort, S_IRUGO); -MODULE_PARM_DESC(vendor, "USB Vendor ID"); - -module_param_named(product, mod_data.product, ushort, S_IRUGO); -MODULE_PARM_DESC(product, "USB Product ID"); - -module_param_named(release, mod_data.release, ushort, S_IRUGO); -MODULE_PARM_DESC(release, "USB release number"); - -module_param_named(buflen, mod_data.buflen, uint, S_IRUGO); -MODULE_PARM_DESC(buflen, "I/O buffer size"); - -#endif /* CONFIG_USB_FILE_STORAGE_TEST */ - - -/* - * These definitions will permit the compiler to avoid generating code for - * parts of the driver that aren't used in the non-TEST version. Even gcc - * can recognize when a test of a constant expression yields a dead code - * path. - */ - -#ifdef CONFIG_USB_FILE_STORAGE_TEST - -#define transport_is_bbb() (mod_data.transport_type == USB_PR_BULK) -#define transport_is_cbi() (mod_data.transport_type == USB_PR_CBI) -#define protocol_is_scsi() (mod_data.protocol_type == USB_SC_SCSI) - -#else - -#define transport_is_bbb() 1 -#define transport_is_cbi() 0 -#define protocol_is_scsi() 1 - -#endif /* CONFIG_USB_FILE_STORAGE_TEST */ - - -/*-------------------------------------------------------------------------*/ - - -struct fsg_dev { - /* lock protects: state, all the req_busy's, and cbbuf_cmnd */ - spinlock_t lock; - struct usb_gadget *gadget; - - /* filesem protects: backing files in use */ - struct rw_semaphore filesem; - - /* reference counting: wait until all LUNs are released */ - struct kref ref; - - struct usb_ep *ep0; // Handy copy of gadget->ep0 - struct usb_request *ep0req; // For control responses - unsigned int ep0_req_tag; - const char *ep0req_name; - - struct usb_request *intreq; // For interrupt responses - int intreq_busy; - struct fsg_buffhd *intr_buffhd; - - unsigned int bulk_out_maxpacket; - enum fsg_state state; // For exception handling - unsigned int exception_req_tag; - - u8 config, new_config; - - unsigned int running : 1; - unsigned int bulk_in_enabled : 1; - unsigned int bulk_out_enabled : 1; - unsigned int intr_in_enabled : 1; - unsigned int phase_error : 1; - unsigned int short_packet_received : 1; - unsigned int bad_lun_okay : 1; - - unsigned long atomic_bitflags; -#define REGISTERED 0 -#define IGNORE_BULK_OUT 1 -#define SUSPENDED 2 - - struct usb_ep *bulk_in; - struct usb_ep *bulk_out; - struct usb_ep *intr_in; - - struct fsg_buffhd *next_buffhd_to_fill; - struct fsg_buffhd *next_buffhd_to_drain; - - int thread_wakeup_needed; - struct completion thread_notifier; - struct task_struct *thread_task; - - int cmnd_size; - u8 cmnd[MAX_COMMAND_SIZE]; - enum data_direction data_dir; - u32 data_size; - u32 data_size_from_cmnd; - u32 tag; - unsigned int lun; - u32 residue; - u32 usb_amount_left; - - /* The CB protocol offers no way for a host to know when a command - * has completed. As a result the next command may arrive early, - * and we will still have to handle it. For that reason we need - * a buffer to store new commands when using CB (or CBI, which - * does not oblige a host to wait for command completion either). */ - int cbbuf_cmnd_size; - u8 cbbuf_cmnd[MAX_COMMAND_SIZE]; - - unsigned int nluns; - struct fsg_lun *luns; - struct fsg_lun *curlun; - /* Must be the last entry */ - struct fsg_buffhd buffhds[]; -}; - -typedef void (*fsg_routine_t)(struct fsg_dev *); - -static int exception_in_progress(struct fsg_dev *fsg) -{ - return (fsg->state > FSG_STATE_IDLE); -} - -/* Make bulk-out requests be divisible by the maxpacket size */ -static void set_bulk_out_req_length(struct fsg_dev *fsg, - struct fsg_buffhd *bh, unsigned int length) -{ - unsigned int rem; - - bh->bulk_out_intended_length = length; - rem = length % fsg->bulk_out_maxpacket; - if (rem > 0) - length += fsg->bulk_out_maxpacket - rem; - bh->outreq->length = length; -} - -static struct fsg_dev *the_fsg; -static struct usb_gadget_driver fsg_driver; - - -/*-------------------------------------------------------------------------*/ - -static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) -{ - const char *name; - - if (ep == fsg->bulk_in) - name = "bulk-in"; - else if (ep == fsg->bulk_out) - name = "bulk-out"; - else - name = ep->name; - DBG(fsg, "%s set halt\n", name); - return usb_ep_set_halt(ep); -} - - -/*-------------------------------------------------------------------------*/ - -/* - * DESCRIPTORS ... most are static, but strings and (full) configuration - * descriptors are built on demand. Also the (static) config and interface - * descriptors are adjusted during fsg_bind(). - */ - -/* There is only one configuration. */ -#define CONFIG_VALUE 1 - -static struct usb_device_descriptor -device_desc = { - .bLength = sizeof device_desc, - .bDescriptorType = USB_DT_DEVICE, - - .bcdUSB = cpu_to_le16(0x0200), - .bDeviceClass = USB_CLASS_PER_INTERFACE, - - /* The next three values can be overridden by module parameters */ - .idVendor = cpu_to_le16(FSG_VENDOR_ID), - .idProduct = cpu_to_le16(FSG_PRODUCT_ID), - .bcdDevice = cpu_to_le16(0xffff), - - .iManufacturer = FSG_STRING_MANUFACTURER, - .iProduct = FSG_STRING_PRODUCT, - .iSerialNumber = FSG_STRING_SERIAL, - .bNumConfigurations = 1, -}; - -static struct usb_config_descriptor -config_desc = { - .bLength = sizeof config_desc, - .bDescriptorType = USB_DT_CONFIG, - - /* wTotalLength computed by usb_gadget_config_buf() */ - .bNumInterfaces = 1, - .bConfigurationValue = CONFIG_VALUE, - .iConfiguration = FSG_STRING_CONFIG, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, -}; - - -static struct usb_qualifier_descriptor -dev_qualifier = { - .bLength = sizeof dev_qualifier, - .bDescriptorType = USB_DT_DEVICE_QUALIFIER, - - .bcdUSB = cpu_to_le16(0x0200), - .bDeviceClass = USB_CLASS_PER_INTERFACE, - - .bNumConfigurations = 1, -}; - -static int populate_bos(struct fsg_dev *fsg, u8 *buf) -{ - memcpy(buf, &fsg_bos_desc, USB_DT_BOS_SIZE); - buf += USB_DT_BOS_SIZE; - - memcpy(buf, &fsg_ext_cap_desc, USB_DT_USB_EXT_CAP_SIZE); - buf += USB_DT_USB_EXT_CAP_SIZE; - - memcpy(buf, &fsg_ss_cap_desc, USB_DT_USB_SS_CAP_SIZE); - - return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE - + USB_DT_USB_EXT_CAP_SIZE; -} - -/* - * Config descriptors must agree with the code that sets configurations - * and with code managing interfaces and their altsettings. They must - * also handle different speeds and other-speed requests. - */ -static int populate_config_buf(struct usb_gadget *gadget, - u8 *buf, u8 type, unsigned index) -{ - enum usb_device_speed speed = gadget->speed; - int len; - const struct usb_descriptor_header **function; - - if (index > 0) - return -EINVAL; - - if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG) - speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed; - function = gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH - ? (const struct usb_descriptor_header **)fsg_hs_function - : (const struct usb_descriptor_header **)fsg_fs_function; - - /* for now, don't advertise srp-only devices */ - if (!gadget_is_otg(gadget)) - function++; - - len = usb_gadget_config_buf(&config_desc, buf, EP0_BUFSIZE, function); - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} - - -/*-------------------------------------------------------------------------*/ - -/* These routines may be called in process context or in_irq */ - -/* Caller must hold fsg->lock */ -static void wakeup_thread(struct fsg_dev *fsg) -{ - /* Tell the main thread that something has happened */ - fsg->thread_wakeup_needed = 1; - if (fsg->thread_task) - wake_up_process(fsg->thread_task); -} - - -static void raise_exception(struct fsg_dev *fsg, enum fsg_state new_state) -{ - unsigned long flags; - - /* Do nothing if a higher-priority exception is already in progress. - * If a lower-or-equal priority exception is in progress, preempt it - * and notify the main thread by sending it a signal. */ - spin_lock_irqsave(&fsg->lock, flags); - if (fsg->state <= new_state) { - fsg->exception_req_tag = fsg->ep0_req_tag; - fsg->state = new_state; - if (fsg->thread_task) - send_sig_info(SIGUSR1, SEND_SIG_FORCED, - fsg->thread_task); - } - spin_unlock_irqrestore(&fsg->lock, flags); -} - - -/*-------------------------------------------------------------------------*/ - -/* The disconnect callback and ep0 routines. These always run in_irq, - * except that ep0_queue() is called in the main thread to acknowledge - * completion of various requests: set config, set interface, and - * Bulk-only device reset. */ - -static void fsg_disconnect(struct usb_gadget *gadget) -{ - struct fsg_dev *fsg = get_gadget_data(gadget); - - DBG(fsg, "disconnect or port reset\n"); - raise_exception(fsg, FSG_STATE_DISCONNECT); -} - - -static int ep0_queue(struct fsg_dev *fsg) -{ - int rc; - - rc = usb_ep_queue(fsg->ep0, fsg->ep0req, GFP_ATOMIC); - if (rc != 0 && rc != -ESHUTDOWN) { - - /* We can't do much more than wait for a reset */ - WARNING(fsg, "error in submission: %s --> %d\n", - fsg->ep0->name, rc); - } - return rc; -} - -static void ep0_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct fsg_dev *fsg = ep->driver_data; - - if (req->actual > 0) - dump_msg(fsg, fsg->ep0req_name, req->buf, req->actual); - if (req->status || req->actual != req->length) - DBG(fsg, "%s --> %d, %u/%u\n", __func__, - req->status, req->actual, req->length); - if (req->status == -ECONNRESET) // Request was cancelled - usb_ep_fifo_flush(ep); - - if (req->status == 0 && req->context) - ((fsg_routine_t) (req->context))(fsg); -} - - -/*-------------------------------------------------------------------------*/ - -/* Bulk and interrupt endpoint completion handlers. - * These always run in_irq. */ - -static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct fsg_dev *fsg = ep->driver_data; - struct fsg_buffhd *bh = req->context; - - if (req->status || req->actual != req->length) - DBG(fsg, "%s --> %d, %u/%u\n", __func__, - req->status, req->actual, req->length); - if (req->status == -ECONNRESET) // Request was cancelled - usb_ep_fifo_flush(ep); - - /* Hold the lock while we update the request and buffer states */ - smp_wmb(); - spin_lock(&fsg->lock); - bh->inreq_busy = 0; - bh->state = BUF_STATE_EMPTY; - wakeup_thread(fsg); - spin_unlock(&fsg->lock); -} - -static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct fsg_dev *fsg = ep->driver_data; - struct fsg_buffhd *bh = req->context; - - dump_msg(fsg, "bulk-out", req->buf, req->actual); - if (req->status || req->actual != bh->bulk_out_intended_length) - DBG(fsg, "%s --> %d, %u/%u\n", __func__, - req->status, req->actual, - bh->bulk_out_intended_length); - if (req->status == -ECONNRESET) // Request was cancelled - usb_ep_fifo_flush(ep); - - /* Hold the lock while we update the request and buffer states */ - smp_wmb(); - spin_lock(&fsg->lock); - bh->outreq_busy = 0; - bh->state = BUF_STATE_FULL; - wakeup_thread(fsg); - spin_unlock(&fsg->lock); -} - - -#ifdef CONFIG_USB_FILE_STORAGE_TEST -static void intr_in_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct fsg_dev *fsg = ep->driver_data; - struct fsg_buffhd *bh = req->context; - - if (req->status || req->actual != req->length) - DBG(fsg, "%s --> %d, %u/%u\n", __func__, - req->status, req->actual, req->length); - if (req->status == -ECONNRESET) // Request was cancelled - usb_ep_fifo_flush(ep); - - /* Hold the lock while we update the request and buffer states */ - smp_wmb(); - spin_lock(&fsg->lock); - fsg->intreq_busy = 0; - bh->state = BUF_STATE_EMPTY; - wakeup_thread(fsg); - spin_unlock(&fsg->lock); -} - -#else -static void intr_in_complete(struct usb_ep *ep, struct usb_request *req) -{} -#endif /* CONFIG_USB_FILE_STORAGE_TEST */ - - -/*-------------------------------------------------------------------------*/ - -/* Ep0 class-specific handlers. These always run in_irq. */ - -#ifdef CONFIG_USB_FILE_STORAGE_TEST -static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct usb_request *req = fsg->ep0req; - static u8 cbi_reset_cmnd[6] = { - SEND_DIAGNOSTIC, 4, 0xff, 0xff, 0xff, 0xff}; - - /* Error in command transfer? */ - if (req->status || req->length != req->actual || - req->actual < 6 || req->actual > MAX_COMMAND_SIZE) { - - /* Not all controllers allow a protocol stall after - * receiving control-out data, but we'll try anyway. */ - fsg_set_halt(fsg, fsg->ep0); - return; // Wait for reset - } - - /* Is it the special reset command? */ - if (req->actual >= sizeof cbi_reset_cmnd && - memcmp(req->buf, cbi_reset_cmnd, - sizeof cbi_reset_cmnd) == 0) { - - /* Raise an exception to stop the current operation - * and reinitialize our state. */ - DBG(fsg, "cbi reset request\n"); - raise_exception(fsg, FSG_STATE_RESET); - return; - } - - VDBG(fsg, "CB[I] accept device-specific command\n"); - spin_lock(&fsg->lock); - - /* Save the command for later */ - if (fsg->cbbuf_cmnd_size) - WARNING(fsg, "CB[I] overwriting previous command\n"); - fsg->cbbuf_cmnd_size = req->actual; - memcpy(fsg->cbbuf_cmnd, req->buf, fsg->cbbuf_cmnd_size); - - wakeup_thread(fsg); - spin_unlock(&fsg->lock); -} - -#else -static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{} -#endif /* CONFIG_USB_FILE_STORAGE_TEST */ - - -static int class_setup_req(struct fsg_dev *fsg, - const struct usb_ctrlrequest *ctrl) -{ - struct usb_request *req = fsg->ep0req; - int value = -EOPNOTSUPP; - u16 w_index = le16_to_cpu(ctrl->wIndex); - u16 w_value = le16_to_cpu(ctrl->wValue); - u16 w_length = le16_to_cpu(ctrl->wLength); - - if (!fsg->config) - return value; - - /* Handle Bulk-only class-specific requests */ - if (transport_is_bbb()) { - switch (ctrl->bRequest) { - - case USB_BULK_RESET_REQUEST: - if (ctrl->bRequestType != (USB_DIR_OUT | - USB_TYPE_CLASS | USB_RECIP_INTERFACE)) - break; - if (w_index != 0 || w_value != 0 || w_length != 0) { - value = -EDOM; - break; - } - - /* Raise an exception to stop the current operation - * and reinitialize our state. */ - DBG(fsg, "bulk reset request\n"); - raise_exception(fsg, FSG_STATE_RESET); - value = DELAYED_STATUS; - break; - - case USB_BULK_GET_MAX_LUN_REQUEST: - if (ctrl->bRequestType != (USB_DIR_IN | - USB_TYPE_CLASS | USB_RECIP_INTERFACE)) - break; - if (w_index != 0 || w_value != 0 || w_length != 1) { - value = -EDOM; - break; - } - VDBG(fsg, "get max LUN\n"); - *(u8 *) req->buf = fsg->nluns - 1; - value = 1; - break; - } - } - - /* Handle CBI class-specific requests */ - else { - switch (ctrl->bRequest) { - - case USB_CBI_ADSC_REQUEST: - if (ctrl->bRequestType != (USB_DIR_OUT | - USB_TYPE_CLASS | USB_RECIP_INTERFACE)) - break; - if (w_index != 0 || w_value != 0) { - value = -EDOM; - break; - } - if (w_length > MAX_COMMAND_SIZE) { - value = -EOVERFLOW; - break; - } - value = w_length; - fsg->ep0req->context = received_cbi_adsc; - break; - } - } - - if (value == -EOPNOTSUPP) - VDBG(fsg, - "unknown class-specific control req " - "%02x.%02x v%04x i%04x l%u\n", - ctrl->bRequestType, ctrl->bRequest, - le16_to_cpu(ctrl->wValue), w_index, w_length); - return value; -} - - -/*-------------------------------------------------------------------------*/ - -/* Ep0 standard request handlers. These always run in_irq. */ - -static int standard_setup_req(struct fsg_dev *fsg, - const struct usb_ctrlrequest *ctrl) -{ - struct usb_request *req = fsg->ep0req; - int value = -EOPNOTSUPP; - u16 w_index = le16_to_cpu(ctrl->wIndex); - u16 w_value = le16_to_cpu(ctrl->wValue); - - /* Usually this just stores reply data in the pre-allocated ep0 buffer, - * but config change events will also reconfigure hardware. */ - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD | - USB_RECIP_DEVICE)) - break; - switch (w_value >> 8) { - - case USB_DT_DEVICE: - VDBG(fsg, "get device descriptor\n"); - device_desc.bMaxPacketSize0 = fsg->ep0->maxpacket; - value = sizeof device_desc; - memcpy(req->buf, &device_desc, value); - break; - case USB_DT_DEVICE_QUALIFIER: - VDBG(fsg, "get device qualifier\n"); - if (!gadget_is_dualspeed(fsg->gadget) || - fsg->gadget->speed == USB_SPEED_SUPER) - break; - /* - * Assume ep0 uses the same maxpacket value for both - * speeds - */ - dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket; - value = sizeof dev_qualifier; - memcpy(req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - VDBG(fsg, "get other-speed config descriptor\n"); - if (!gadget_is_dualspeed(fsg->gadget) || - fsg->gadget->speed == USB_SPEED_SUPER) - break; - goto get_config; - case USB_DT_CONFIG: - VDBG(fsg, "get configuration descriptor\n"); -get_config: - value = populate_config_buf(fsg->gadget, - req->buf, - w_value >> 8, - w_value & 0xff); - break; - - case USB_DT_STRING: - VDBG(fsg, "get string descriptor\n"); - - /* wIndex == language code */ - value = usb_gadget_get_string(&fsg_stringtab, - w_value & 0xff, req->buf); - break; - - case USB_DT_BOS: - VDBG(fsg, "get bos descriptor\n"); - - if (gadget_is_superspeed(fsg->gadget)) - value = populate_bos(fsg, req->buf); - break; - } - - break; - - /* One config, two speeds */ - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD | - USB_RECIP_DEVICE)) - break; - VDBG(fsg, "set configuration\n"); - if (w_value == CONFIG_VALUE || w_value == 0) { - fsg->new_config = w_value; - - /* Raise an exception to wipe out previous transaction - * state (queued bufs, etc) and set the new config. */ - raise_exception(fsg, FSG_STATE_CONFIG_CHANGE); - value = DELAYED_STATUS; - } - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD | - USB_RECIP_DEVICE)) - break; - VDBG(fsg, "get configuration\n"); - *(u8 *) req->buf = fsg->config; - value = 1; - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != (USB_DIR_OUT| USB_TYPE_STANDARD | - USB_RECIP_INTERFACE)) - break; - if (fsg->config && w_index == 0) { - - /* Raise an exception to wipe out previous transaction - * state (queued bufs, etc) and install the new - * interface altsetting. */ - raise_exception(fsg, FSG_STATE_INTERFACE_CHANGE); - value = DELAYED_STATUS; - } - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD | - USB_RECIP_INTERFACE)) - break; - if (!fsg->config) - break; - if (w_index != 0) { - value = -EDOM; - break; - } - VDBG(fsg, "get interface\n"); - *(u8 *) req->buf = 0; - value = 1; - break; - - default: - VDBG(fsg, - "unknown control req %02x.%02x v%04x i%04x l%u\n", - ctrl->bRequestType, ctrl->bRequest, - w_value, w_index, le16_to_cpu(ctrl->wLength)); - } - - return value; -} - - -static int fsg_setup(struct usb_gadget *gadget, - const struct usb_ctrlrequest *ctrl) -{ - struct fsg_dev *fsg = get_gadget_data(gadget); - int rc; - int w_length = le16_to_cpu(ctrl->wLength); - - ++fsg->ep0_req_tag; // Record arrival of a new request - fsg->ep0req->context = NULL; - fsg->ep0req->length = 0; - dump_msg(fsg, "ep0-setup", (u8 *) ctrl, sizeof(*ctrl)); - - if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) - rc = class_setup_req(fsg, ctrl); - else - rc = standard_setup_req(fsg, ctrl); - - /* Respond with data/status or defer until later? */ - if (rc >= 0 && rc != DELAYED_STATUS) { - rc = min(rc, w_length); - fsg->ep0req->length = rc; - fsg->ep0req->zero = rc < w_length; - fsg->ep0req_name = (ctrl->bRequestType & USB_DIR_IN ? - "ep0-in" : "ep0-out"); - rc = ep0_queue(fsg); - } - - /* Device either stalls (rc < 0) or reports success */ - return rc; -} - - -/*-------------------------------------------------------------------------*/ - -/* All the following routines run in process context */ - - -/* Use this for bulk or interrupt transfers, not ep0 */ -static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep, - struct usb_request *req, int *pbusy, - enum fsg_buffer_state *state) -{ - int rc; - - if (ep == fsg->bulk_in) - dump_msg(fsg, "bulk-in", req->buf, req->length); - else if (ep == fsg->intr_in) - dump_msg(fsg, "intr-in", req->buf, req->length); - - spin_lock_irq(&fsg->lock); - *pbusy = 1; - *state = BUF_STATE_BUSY; - spin_unlock_irq(&fsg->lock); - rc = usb_ep_queue(ep, req, GFP_KERNEL); - if (rc != 0) { - *pbusy = 0; - *state = BUF_STATE_EMPTY; - - /* We can't do much more than wait for a reset */ - - /* Note: currently the net2280 driver fails zero-length - * submissions if DMA is enabled. */ - if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP && - req->length == 0)) - WARNING(fsg, "error in submission: %s --> %d\n", - ep->name, rc); - } -} - - -static int sleep_thread(struct fsg_dev *fsg) -{ - int rc = 0; - - /* Wait until a signal arrives or we are woken up */ - for (;;) { - try_to_freeze(); - set_current_state(TASK_INTERRUPTIBLE); - if (signal_pending(current)) { - rc = -EINTR; - break; - } - if (fsg->thread_wakeup_needed) - break; - schedule(); - } - __set_current_state(TASK_RUNNING); - fsg->thread_wakeup_needed = 0; - return rc; -} - - -/*-------------------------------------------------------------------------*/ - -static int do_read(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - u32 lba; - struct fsg_buffhd *bh; - int rc; - u32 amount_left; - loff_t file_offset, file_offset_tmp; - unsigned int amount; - ssize_t nread; - - /* Get the starting Logical Block Address and check that it's - * not too big */ - if (fsg->cmnd[0] == READ_6) - lba = get_unaligned_be24(&fsg->cmnd[1]); - else { - lba = get_unaligned_be32(&fsg->cmnd[2]); - - /* We allow DPO (Disable Page Out = don't save data in the - * cache) and FUA (Force Unit Access = don't read from the - * cache), but we don't implement them. */ - if ((fsg->cmnd[1] & ~0x18) != 0) { - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - } - if (lba >= curlun->num_sectors) { - curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - return -EINVAL; - } - file_offset = ((loff_t) lba) << curlun->blkbits; - - /* Carry out the file reads */ - amount_left = fsg->data_size_from_cmnd; - if (unlikely(amount_left == 0)) - return -EIO; // No default reply - - for (;;) { - - /* Figure out how much we need to read: - * Try to read the remaining amount. - * But don't read more than the buffer size. - * And don't try to read past the end of the file. - */ - amount = min((unsigned int) amount_left, mod_data.buflen); - amount = min((loff_t) amount, - curlun->file_length - file_offset); - - /* Wait for the next buffer to become available */ - bh = fsg->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(fsg); - if (rc) - return rc; - } - - /* If we were asked to read past the end of file, - * end with an empty buffer. */ - if (amount == 0) { - curlun->sense_data = - SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - bh->inreq->length = 0; - bh->state = BUF_STATE_FULL; - break; - } - - /* Perform the read */ - file_offset_tmp = file_offset; - nread = vfs_read(curlun->filp, - (char __user *) bh->buf, - amount, &file_offset_tmp); - VLDBG(curlun, "file read %u @ %llu -> %d\n", amount, - (unsigned long long) file_offset, - (int) nread); - if (signal_pending(current)) - return -EINTR; - - if (nread < 0) { - LDBG(curlun, "error in file read: %d\n", - (int) nread); - nread = 0; - } else if (nread < amount) { - LDBG(curlun, "partial file read: %d/%u\n", - (int) nread, amount); - nread = round_down(nread, curlun->blksize); - } - file_offset += nread; - amount_left -= nread; - fsg->residue -= nread; - - /* Except at the end of the transfer, nread will be - * equal to the buffer size, which is divisible by the - * bulk-in maxpacket size. - */ - bh->inreq->length = nread; - bh->state = BUF_STATE_FULL; - - /* If an error occurred, report it and its position */ - if (nread < amount) { - curlun->sense_data = SS_UNRECOVERED_READ_ERROR; - curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } - - if (amount_left == 0) - break; // No more left to read - - /* Send this buffer and go read some more */ - bh->inreq->zero = 0; - start_transfer(fsg, fsg->bulk_in, bh->inreq, - &bh->inreq_busy, &bh->state); - fsg->next_buffhd_to_fill = bh->next; - } - - return -EIO; // No default reply -} - - -/*-------------------------------------------------------------------------*/ - -static int do_write(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - u32 lba; - struct fsg_buffhd *bh; - int get_some_more; - u32 amount_left_to_req, amount_left_to_write; - loff_t usb_offset, file_offset, file_offset_tmp; - unsigned int amount; - ssize_t nwritten; - int rc; - - if (curlun->ro) { - curlun->sense_data = SS_WRITE_PROTECTED; - return -EINVAL; - } - spin_lock(&curlun->filp->f_lock); - curlun->filp->f_flags &= ~O_SYNC; // Default is not to wait - spin_unlock(&curlun->filp->f_lock); - - /* Get the starting Logical Block Address and check that it's - * not too big */ - if (fsg->cmnd[0] == WRITE_6) - lba = get_unaligned_be24(&fsg->cmnd[1]); - else { - lba = get_unaligned_be32(&fsg->cmnd[2]); - - /* We allow DPO (Disable Page Out = don't save data in the - * cache) and FUA (Force Unit Access = write directly to the - * medium). We don't implement DPO; we implement FUA by - * performing synchronous output. */ - if ((fsg->cmnd[1] & ~0x18) != 0) { - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - /* FUA */ - if (!curlun->nofua && (fsg->cmnd[1] & 0x08)) { - spin_lock(&curlun->filp->f_lock); - curlun->filp->f_flags |= O_DSYNC; - spin_unlock(&curlun->filp->f_lock); - } - } - if (lba >= curlun->num_sectors) { - curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - return -EINVAL; - } - - /* Carry out the file writes */ - get_some_more = 1; - file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits; - amount_left_to_req = amount_left_to_write = fsg->data_size_from_cmnd; - - while (amount_left_to_write > 0) { - - /* Queue a request for more data from the host */ - bh = fsg->next_buffhd_to_fill; - if (bh->state == BUF_STATE_EMPTY && get_some_more) { - - /* Figure out how much we want to get: - * Try to get the remaining amount, - * but not more than the buffer size. - */ - amount = min(amount_left_to_req, mod_data.buflen); - - /* Beyond the end of the backing file? */ - if (usb_offset >= curlun->file_length) { - get_some_more = 0; - curlun->sense_data = - SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - curlun->sense_data_info = usb_offset >> curlun->blkbits; - curlun->info_valid = 1; - continue; - } - - /* Get the next buffer */ - usb_offset += amount; - fsg->usb_amount_left -= amount; - amount_left_to_req -= amount; - if (amount_left_to_req == 0) - get_some_more = 0; - - /* Except at the end of the transfer, amount will be - * equal to the buffer size, which is divisible by - * the bulk-out maxpacket size. - */ - set_bulk_out_req_length(fsg, bh, amount); - start_transfer(fsg, fsg->bulk_out, bh->outreq, - &bh->outreq_busy, &bh->state); - fsg->next_buffhd_to_fill = bh->next; - continue; - } - - /* Write the received data to the backing file */ - bh = fsg->next_buffhd_to_drain; - if (bh->state == BUF_STATE_EMPTY && !get_some_more) - break; // We stopped early - if (bh->state == BUF_STATE_FULL) { - smp_rmb(); - fsg->next_buffhd_to_drain = bh->next; - bh->state = BUF_STATE_EMPTY; - - /* Did something go wrong with the transfer? */ - if (bh->outreq->status != 0) { - curlun->sense_data = SS_COMMUNICATION_FAILURE; - curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } - - amount = bh->outreq->actual; - if (curlun->file_length - file_offset < amount) { - LERROR(curlun, - "write %u @ %llu beyond end %llu\n", - amount, (unsigned long long) file_offset, - (unsigned long long) curlun->file_length); - amount = curlun->file_length - file_offset; - } - - /* Don't accept excess data. The spec doesn't say - * what to do in this case. We'll ignore the error. - */ - amount = min(amount, bh->bulk_out_intended_length); - - /* Don't write a partial block */ - amount = round_down(amount, curlun->blksize); - if (amount == 0) - goto empty_write; - - /* Perform the write */ - file_offset_tmp = file_offset; - nwritten = vfs_write(curlun->filp, - (char __user *) bh->buf, - amount, &file_offset_tmp); - VLDBG(curlun, "file write %u @ %llu -> %d\n", amount, - (unsigned long long) file_offset, - (int) nwritten); - if (signal_pending(current)) - return -EINTR; // Interrupted! - - if (nwritten < 0) { - LDBG(curlun, "error in file write: %d\n", - (int) nwritten); - nwritten = 0; - } else if (nwritten < amount) { - LDBG(curlun, "partial file write: %d/%u\n", - (int) nwritten, amount); - nwritten = round_down(nwritten, curlun->blksize); - } - file_offset += nwritten; - amount_left_to_write -= nwritten; - fsg->residue -= nwritten; - - /* If an error occurred, report it and its position */ - if (nwritten < amount) { - curlun->sense_data = SS_WRITE_ERROR; - curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } - - empty_write: - /* Did the host decide to stop early? */ - if (bh->outreq->actual < bh->bulk_out_intended_length) { - fsg->short_packet_received = 1; - break; - } - continue; - } - - /* Wait for something to happen */ - rc = sleep_thread(fsg); - if (rc) - return rc; - } - - return -EIO; // No default reply -} - - -/*-------------------------------------------------------------------------*/ - -static int do_synchronize_cache(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - int rc; - - /* We ignore the requested LBA and write out all file's - * dirty data buffers. */ - rc = fsg_lun_fsync_sub(curlun); - if (rc) - curlun->sense_data = SS_WRITE_ERROR; - return 0; -} - - -/*-------------------------------------------------------------------------*/ - -static void invalidate_sub(struct fsg_lun *curlun) -{ - struct file *filp = curlun->filp; - struct inode *inode = filp->f_path.dentry->d_inode; - unsigned long rc; - - rc = invalidate_mapping_pages(inode->i_mapping, 0, -1); - VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc); -} - -static int do_verify(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - u32 lba; - u32 verification_length; - struct fsg_buffhd *bh = fsg->next_buffhd_to_fill; - loff_t file_offset, file_offset_tmp; - u32 amount_left; - unsigned int amount; - ssize_t nread; - - /* Get the starting Logical Block Address and check that it's - * not too big */ - lba = get_unaligned_be32(&fsg->cmnd[2]); - if (lba >= curlun->num_sectors) { - curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - return -EINVAL; - } - - /* We allow DPO (Disable Page Out = don't save data in the - * cache) but we don't implement it. */ - if ((fsg->cmnd[1] & ~0x10) != 0) { - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - - verification_length = get_unaligned_be16(&fsg->cmnd[7]); - if (unlikely(verification_length == 0)) - return -EIO; // No default reply - - /* Prepare to carry out the file verify */ - amount_left = verification_length << curlun->blkbits; - file_offset = ((loff_t) lba) << curlun->blkbits; - - /* Write out all the dirty buffers before invalidating them */ - fsg_lun_fsync_sub(curlun); - if (signal_pending(current)) - return -EINTR; - - invalidate_sub(curlun); - if (signal_pending(current)) - return -EINTR; - - /* Just try to read the requested blocks */ - while (amount_left > 0) { - - /* Figure out how much we need to read: - * Try to read the remaining amount, but not more than - * the buffer size. - * And don't try to read past the end of the file. - */ - amount = min((unsigned int) amount_left, mod_data.buflen); - amount = min((loff_t) amount, - curlun->file_length - file_offset); - if (amount == 0) { - curlun->sense_data = - SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } - - /* Perform the read */ - file_offset_tmp = file_offset; - nread = vfs_read(curlun->filp, - (char __user *) bh->buf, - amount, &file_offset_tmp); - VLDBG(curlun, "file read %u @ %llu -> %d\n", amount, - (unsigned long long) file_offset, - (int) nread); - if (signal_pending(current)) - return -EINTR; - - if (nread < 0) { - LDBG(curlun, "error in file verify: %d\n", - (int) nread); - nread = 0; - } else if (nread < amount) { - LDBG(curlun, "partial file verify: %d/%u\n", - (int) nread, amount); - nread = round_down(nread, curlun->blksize); - } - if (nread == 0) { - curlun->sense_data = SS_UNRECOVERED_READ_ERROR; - curlun->sense_data_info = file_offset >> curlun->blkbits; - curlun->info_valid = 1; - break; - } - file_offset += nread; - amount_left -= nread; - } - return 0; -} - - -/*-------------------------------------------------------------------------*/ - -static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - u8 *buf = (u8 *) bh->buf; - - static char vendor_id[] = "Linux "; - static char product_disk_id[] = "File-Stor Gadget"; - static char product_cdrom_id[] = "File-CD Gadget "; - - if (!fsg->curlun) { // Unsupported LUNs are okay - fsg->bad_lun_okay = 1; - memset(buf, 0, 36); - buf[0] = 0x7f; // Unsupported, no device-type - buf[4] = 31; // Additional length - return 36; - } - - memset(buf, 0, 8); - buf[0] = (mod_data.cdrom ? TYPE_ROM : TYPE_DISK); - if (mod_data.removable) - buf[1] = 0x80; - buf[2] = 2; // ANSI SCSI level 2 - buf[3] = 2; // SCSI-2 INQUIRY data format - buf[4] = 31; // Additional length - // No special options - sprintf(buf + 8, "%-8s%-16s%04x", vendor_id, - (mod_data.cdrom ? product_cdrom_id : - product_disk_id), - mod_data.release); - return 36; -} - - -static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - u8 *buf = (u8 *) bh->buf; - u32 sd, sdinfo; - int valid; - - /* - * From the SCSI-2 spec., section 7.9 (Unit attention condition): - * - * If a REQUEST SENSE command is received from an initiator - * with a pending unit attention condition (before the target - * generates the contingent allegiance condition), then the - * target shall either: - * a) report any pending sense data and preserve the unit - * attention condition on the logical unit, or, - * b) report the unit attention condition, may discard any - * pending sense data, and clear the unit attention - * condition on the logical unit for that initiator. - * - * FSG normally uses option a); enable this code to use option b). - */ -#if 0 - if (curlun && curlun->unit_attention_data != SS_NO_SENSE) { - curlun->sense_data = curlun->unit_attention_data; - curlun->unit_attention_data = SS_NO_SENSE; - } -#endif - - if (!curlun) { // Unsupported LUNs are okay - fsg->bad_lun_okay = 1; - sd = SS_LOGICAL_UNIT_NOT_SUPPORTED; - sdinfo = 0; - valid = 0; - } else { - sd = curlun->sense_data; - sdinfo = curlun->sense_data_info; - valid = curlun->info_valid << 7; - curlun->sense_data = SS_NO_SENSE; - curlun->sense_data_info = 0; - curlun->info_valid = 0; - } - - memset(buf, 0, 18); - buf[0] = valid | 0x70; // Valid, current error - buf[2] = SK(sd); - put_unaligned_be32(sdinfo, &buf[3]); /* Sense information */ - buf[7] = 18 - 8; // Additional sense length - buf[12] = ASC(sd); - buf[13] = ASCQ(sd); - return 18; -} - - -static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - u32 lba = get_unaligned_be32(&fsg->cmnd[2]); - int pmi = fsg->cmnd[8]; - u8 *buf = (u8 *) bh->buf; - - /* Check the PMI and LBA fields */ - if (pmi > 1 || (pmi == 0 && lba != 0)) { - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - - put_unaligned_be32(curlun->num_sectors - 1, &buf[0]); - /* Max logical block */ - put_unaligned_be32(curlun->blksize, &buf[4]); /* Block length */ - return 8; -} - - -static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - int msf = fsg->cmnd[1] & 0x02; - u32 lba = get_unaligned_be32(&fsg->cmnd[2]); - u8 *buf = (u8 *) bh->buf; - - if ((fsg->cmnd[1] & ~0x02) != 0) { /* Mask away MSF */ - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - if (lba >= curlun->num_sectors) { - curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; - return -EINVAL; - } - - memset(buf, 0, 8); - buf[0] = 0x01; /* 2048 bytes of user data, rest is EC */ - store_cdrom_address(&buf[4], msf, lba); - return 8; -} - - -static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - int msf = fsg->cmnd[1] & 0x02; - int start_track = fsg->cmnd[6]; - u8 *buf = (u8 *) bh->buf; - - if ((fsg->cmnd[1] & ~0x02) != 0 || /* Mask away MSF */ - start_track > 1) { - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - - memset(buf, 0, 20); - buf[1] = (20-2); /* TOC data length */ - buf[2] = 1; /* First track number */ - buf[3] = 1; /* Last track number */ - buf[5] = 0x16; /* Data track, copying allowed */ - buf[6] = 0x01; /* Only track is number 1 */ - store_cdrom_address(&buf[8], msf, 0); - - buf[13] = 0x16; /* Lead-out track is data */ - buf[14] = 0xAA; /* Lead-out track number */ - store_cdrom_address(&buf[16], msf, curlun->num_sectors); - return 20; -} - - -static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - int mscmnd = fsg->cmnd[0]; - u8 *buf = (u8 *) bh->buf; - u8 *buf0 = buf; - int pc, page_code; - int changeable_values, all_pages; - int valid_page = 0; - int len, limit; - - if ((fsg->cmnd[1] & ~0x08) != 0) { // Mask away DBD - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - pc = fsg->cmnd[2] >> 6; - page_code = fsg->cmnd[2] & 0x3f; - if (pc == 3) { - curlun->sense_data = SS_SAVING_PARAMETERS_NOT_SUPPORTED; - return -EINVAL; - } - changeable_values = (pc == 1); - all_pages = (page_code == 0x3f); - - /* Write the mode parameter header. Fixed values are: default - * medium type, no cache control (DPOFUA), and no block descriptors. - * The only variable value is the WriteProtect bit. We will fill in - * the mode data length later. */ - memset(buf, 0, 8); - if (mscmnd == MODE_SENSE) { - buf[2] = (curlun->ro ? 0x80 : 0x00); // WP, DPOFUA - buf += 4; - limit = 255; - } else { // MODE_SENSE_10 - buf[3] = (curlun->ro ? 0x80 : 0x00); // WP, DPOFUA - buf += 8; - limit = 65535; // Should really be mod_data.buflen - } - - /* No block descriptors */ - - /* The mode pages, in numerical order. The only page we support - * is the Caching page. */ - if (page_code == 0x08 || all_pages) { - valid_page = 1; - buf[0] = 0x08; // Page code - buf[1] = 10; // Page length - memset(buf+2, 0, 10); // None of the fields are changeable - - if (!changeable_values) { - buf[2] = 0x04; // Write cache enable, - // Read cache not disabled - // No cache retention priorities - put_unaligned_be16(0xffff, &buf[4]); - /* Don't disable prefetch */ - /* Minimum prefetch = 0 */ - put_unaligned_be16(0xffff, &buf[8]); - /* Maximum prefetch */ - put_unaligned_be16(0xffff, &buf[10]); - /* Maximum prefetch ceiling */ - } - buf += 12; - } - - /* Check that a valid page was requested and the mode data length - * isn't too long. */ - len = buf - buf0; - if (!valid_page || len > limit) { - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - - /* Store the mode data length */ - if (mscmnd == MODE_SENSE) - buf0[0] = len - 1; - else - put_unaligned_be16(len - 2, buf0); - return len; -} - - -static int do_start_stop(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - int loej, start; - - if (!mod_data.removable) { - curlun->sense_data = SS_INVALID_COMMAND; - return -EINVAL; - } - - // int immed = fsg->cmnd[1] & 0x01; - loej = fsg->cmnd[4] & 0x02; - start = fsg->cmnd[4] & 0x01; - -#ifdef CONFIG_USB_FILE_STORAGE_TEST - if ((fsg->cmnd[1] & ~0x01) != 0 || // Mask away Immed - (fsg->cmnd[4] & ~0x03) != 0) { // Mask LoEj, Start - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - - if (!start) { - - /* Are we allowed to unload the media? */ - if (curlun->prevent_medium_removal) { - LDBG(curlun, "unload attempt prevented\n"); - curlun->sense_data = SS_MEDIUM_REMOVAL_PREVENTED; - return -EINVAL; - } - if (loej) { // Simulate an unload/eject - up_read(&fsg->filesem); - down_write(&fsg->filesem); - fsg_lun_close(curlun); - up_write(&fsg->filesem); - down_read(&fsg->filesem); - } - } else { - - /* Our emulation doesn't support mounting; the medium is - * available for use as soon as it is loaded. */ - if (!fsg_lun_is_open(curlun)) { - curlun->sense_data = SS_MEDIUM_NOT_PRESENT; - return -EINVAL; - } - } -#endif - return 0; -} - - -static int do_prevent_allow(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - int prevent; - - if (!mod_data.removable) { - curlun->sense_data = SS_INVALID_COMMAND; - return -EINVAL; - } - - prevent = fsg->cmnd[4] & 0x01; - if ((fsg->cmnd[4] & ~0x01) != 0) { // Mask away Prevent - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - - if (curlun->prevent_medium_removal && !prevent) - fsg_lun_fsync_sub(curlun); - curlun->prevent_medium_removal = prevent; - return 0; -} - - -static int do_read_format_capacities(struct fsg_dev *fsg, - struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - u8 *buf = (u8 *) bh->buf; - - buf[0] = buf[1] = buf[2] = 0; - buf[3] = 8; // Only the Current/Maximum Capacity Descriptor - buf += 4; - - put_unaligned_be32(curlun->num_sectors, &buf[0]); - /* Number of blocks */ - put_unaligned_be32(curlun->blksize, &buf[4]); /* Block length */ - buf[4] = 0x02; /* Current capacity */ - return 12; -} - - -static int do_mode_select(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct fsg_lun *curlun = fsg->curlun; - - /* We don't support MODE SELECT */ - curlun->sense_data = SS_INVALID_COMMAND; - return -EINVAL; -} - - -/*-------------------------------------------------------------------------*/ - -static int halt_bulk_in_endpoint(struct fsg_dev *fsg) -{ - int rc; - - rc = fsg_set_halt(fsg, fsg->bulk_in); - if (rc == -EAGAIN) - VDBG(fsg, "delayed bulk-in endpoint halt\n"); - while (rc != 0) { - if (rc != -EAGAIN) { - WARNING(fsg, "usb_ep_set_halt -> %d\n", rc); - rc = 0; - break; - } - - /* Wait for a short time and then try again */ - if (msleep_interruptible(100) != 0) - return -EINTR; - rc = usb_ep_set_halt(fsg->bulk_in); - } - return rc; -} - -static int wedge_bulk_in_endpoint(struct fsg_dev *fsg) -{ - int rc; - - DBG(fsg, "bulk-in set wedge\n"); - rc = usb_ep_set_wedge(fsg->bulk_in); - if (rc == -EAGAIN) - VDBG(fsg, "delayed bulk-in endpoint wedge\n"); - while (rc != 0) { - if (rc != -EAGAIN) { - WARNING(fsg, "usb_ep_set_wedge -> %d\n", rc); - rc = 0; - break; - } - - /* Wait for a short time and then try again */ - if (msleep_interruptible(100) != 0) - return -EINTR; - rc = usb_ep_set_wedge(fsg->bulk_in); - } - return rc; -} - -static int throw_away_data(struct fsg_dev *fsg) -{ - struct fsg_buffhd *bh; - u32 amount; - int rc; - - while ((bh = fsg->next_buffhd_to_drain)->state != BUF_STATE_EMPTY || - fsg->usb_amount_left > 0) { - - /* Throw away the data in a filled buffer */ - if (bh->state == BUF_STATE_FULL) { - smp_rmb(); - bh->state = BUF_STATE_EMPTY; - fsg->next_buffhd_to_drain = bh->next; - - /* A short packet or an error ends everything */ - if (bh->outreq->actual < bh->bulk_out_intended_length || - bh->outreq->status != 0) { - raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT); - return -EINTR; - } - continue; - } - - /* Try to submit another request if we need one */ - bh = fsg->next_buffhd_to_fill; - if (bh->state == BUF_STATE_EMPTY && fsg->usb_amount_left > 0) { - amount = min(fsg->usb_amount_left, - (u32) mod_data.buflen); - - /* Except at the end of the transfer, amount will be - * equal to the buffer size, which is divisible by - * the bulk-out maxpacket size. - */ - set_bulk_out_req_length(fsg, bh, amount); - start_transfer(fsg, fsg->bulk_out, bh->outreq, - &bh->outreq_busy, &bh->state); - fsg->next_buffhd_to_fill = bh->next; - fsg->usb_amount_left -= amount; - continue; - } - - /* Otherwise wait for something to happen */ - rc = sleep_thread(fsg); - if (rc) - return rc; - } - return 0; -} - - -static int finish_reply(struct fsg_dev *fsg) -{ - struct fsg_buffhd *bh = fsg->next_buffhd_to_fill; - int rc = 0; - - switch (fsg->data_dir) { - case DATA_DIR_NONE: - break; // Nothing to send - - /* If we don't know whether the host wants to read or write, - * this must be CB or CBI with an unknown command. We mustn't - * try to send or receive any data. So stall both bulk pipes - * if we can and wait for a reset. */ - case DATA_DIR_UNKNOWN: - if (mod_data.can_stall) { - fsg_set_halt(fsg, fsg->bulk_out); - rc = halt_bulk_in_endpoint(fsg); - } - break; - - /* All but the last buffer of data must have already been sent */ - case DATA_DIR_TO_HOST: - if (fsg->data_size == 0) - ; // Nothing to send - - /* If there's no residue, simply send the last buffer */ - else if (fsg->residue == 0) { - bh->inreq->zero = 0; - start_transfer(fsg, fsg->bulk_in, bh->inreq, - &bh->inreq_busy, &bh->state); - fsg->next_buffhd_to_fill = bh->next; - } - - /* There is a residue. For CB and CBI, simply mark the end - * of the data with a short packet. However, if we are - * allowed to stall, there was no data at all (residue == - * data_size), and the command failed (invalid LUN or - * sense data is set), then halt the bulk-in endpoint - * instead. */ - else if (!transport_is_bbb()) { - if (mod_data.can_stall && - fsg->residue == fsg->data_size && - (!fsg->curlun || fsg->curlun->sense_data != SS_NO_SENSE)) { - bh->state = BUF_STATE_EMPTY; - rc = halt_bulk_in_endpoint(fsg); - } else { - bh->inreq->zero = 1; - start_transfer(fsg, fsg->bulk_in, bh->inreq, - &bh->inreq_busy, &bh->state); - fsg->next_buffhd_to_fill = bh->next; - } - } - - /* - * For Bulk-only, mark the end of the data with a short - * packet. If we are allowed to stall, halt the bulk-in - * endpoint. (Note: This violates the Bulk-Only Transport - * specification, which requires us to pad the data if we - * don't halt the endpoint. Presumably nobody will mind.) - */ - else { - bh->inreq->zero = 1; - start_transfer(fsg, fsg->bulk_in, bh->inreq, - &bh->inreq_busy, &bh->state); - fsg->next_buffhd_to_fill = bh->next; - if (mod_data.can_stall) - rc = halt_bulk_in_endpoint(fsg); - } - break; - - /* We have processed all we want from the data the host has sent. - * There may still be outstanding bulk-out requests. */ - case DATA_DIR_FROM_HOST: - if (fsg->residue == 0) - ; // Nothing to receive - - /* Did the host stop sending unexpectedly early? */ - else if (fsg->short_packet_received) { - raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT); - rc = -EINTR; - } - - /* We haven't processed all the incoming data. Even though - * we may be allowed to stall, doing so would cause a race. - * The controller may already have ACK'ed all the remaining - * bulk-out packets, in which case the host wouldn't see a - * STALL. Not realizing the endpoint was halted, it wouldn't - * clear the halt -- leading to problems later on. */ -#if 0 - else if (mod_data.can_stall) { - fsg_set_halt(fsg, fsg->bulk_out); - raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT); - rc = -EINTR; - } -#endif - - /* We can't stall. Read in the excess data and throw it - * all away. */ - else - rc = throw_away_data(fsg); - break; - } - return rc; -} - - -static int send_status(struct fsg_dev *fsg) -{ - struct fsg_lun *curlun = fsg->curlun; - struct fsg_buffhd *bh; - int rc; - u8 status = USB_STATUS_PASS; - u32 sd, sdinfo = 0; - - /* Wait for the next buffer to become available */ - bh = fsg->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(fsg); - if (rc) - return rc; - } - - if (curlun) { - sd = curlun->sense_data; - sdinfo = curlun->sense_data_info; - } else if (fsg->bad_lun_okay) - sd = SS_NO_SENSE; - else - sd = SS_LOGICAL_UNIT_NOT_SUPPORTED; - - if (fsg->phase_error) { - DBG(fsg, "sending phase-error status\n"); - status = USB_STATUS_PHASE_ERROR; - sd = SS_INVALID_COMMAND; - } else if (sd != SS_NO_SENSE) { - DBG(fsg, "sending command-failure status\n"); - status = USB_STATUS_FAIL; - VDBG(fsg, " sense data: SK x%02x, ASC x%02x, ASCQ x%02x;" - " info x%x\n", - SK(sd), ASC(sd), ASCQ(sd), sdinfo); - } - - if (transport_is_bbb()) { - struct bulk_cs_wrap *csw = bh->buf; - - /* Store and send the Bulk-only CSW */ - csw->Signature = cpu_to_le32(USB_BULK_CS_SIG); - csw->Tag = fsg->tag; - csw->Residue = cpu_to_le32(fsg->residue); - csw->Status = status; - - bh->inreq->length = USB_BULK_CS_WRAP_LEN; - bh->inreq->zero = 0; - start_transfer(fsg, fsg->bulk_in, bh->inreq, - &bh->inreq_busy, &bh->state); - - } else if (mod_data.transport_type == USB_PR_CB) { - - /* Control-Bulk transport has no status phase! */ - return 0; - - } else { // USB_PR_CBI - struct interrupt_data *buf = bh->buf; - - /* Store and send the Interrupt data. UFI sends the ASC - * and ASCQ bytes. Everything else sends a Type (which - * is always 0) and the status Value. */ - if (mod_data.protocol_type == USB_SC_UFI) { - buf->bType = ASC(sd); - buf->bValue = ASCQ(sd); - } else { - buf->bType = 0; - buf->bValue = status; - } - fsg->intreq->length = CBI_INTERRUPT_DATA_LEN; - - fsg->intr_buffhd = bh; // Point to the right buffhd - fsg->intreq->buf = bh->inreq->buf; - fsg->intreq->context = bh; - start_transfer(fsg, fsg->intr_in, fsg->intreq, - &fsg->intreq_busy, &bh->state); - } - - fsg->next_buffhd_to_fill = bh->next; - return 0; -} - - -/*-------------------------------------------------------------------------*/ - -/* Check whether the command is properly formed and whether its data size - * and direction agree with the values we already have. */ -static int check_command(struct fsg_dev *fsg, int cmnd_size, - enum data_direction data_dir, unsigned int mask, - int needs_medium, const char *name) -{ - int i; - int lun = fsg->cmnd[1] >> 5; - static const char dirletter[4] = {'u', 'o', 'i', 'n'}; - char hdlen[20]; - struct fsg_lun *curlun; - - /* Adjust the expected cmnd_size for protocol encapsulation padding. - * Transparent SCSI doesn't pad. */ - if (protocol_is_scsi()) - ; - - /* There's some disagreement as to whether RBC pads commands or not. - * We'll play it safe and accept either form. */ - else if (mod_data.protocol_type == USB_SC_RBC) { - if (fsg->cmnd_size == 12) - cmnd_size = 12; - - /* All the other protocols pad to 12 bytes */ - } else - cmnd_size = 12; - - hdlen[0] = 0; - if (fsg->data_dir != DATA_DIR_UNKNOWN) - sprintf(hdlen, ", H%c=%u", dirletter[(int) fsg->data_dir], - fsg->data_size); - VDBG(fsg, "SCSI command: %s; Dc=%d, D%c=%u; Hc=%d%s\n", - name, cmnd_size, dirletter[(int) data_dir], - fsg->data_size_from_cmnd, fsg->cmnd_size, hdlen); - - /* We can't reply at all until we know the correct data direction - * and size. */ - if (fsg->data_size_from_cmnd == 0) - data_dir = DATA_DIR_NONE; - if (fsg->data_dir == DATA_DIR_UNKNOWN) { // CB or CBI - fsg->data_dir = data_dir; - fsg->data_size = fsg->data_size_from_cmnd; - - } else { // Bulk-only - if (fsg->data_size < fsg->data_size_from_cmnd) { - - /* Host data size < Device data size is a phase error. - * Carry out the command, but only transfer as much - * as we are allowed. */ - fsg->data_size_from_cmnd = fsg->data_size; - fsg->phase_error = 1; - } - } - fsg->residue = fsg->usb_amount_left = fsg->data_size; - - /* Conflicting data directions is a phase error */ - if (fsg->data_dir != data_dir && fsg->data_size_from_cmnd > 0) { - fsg->phase_error = 1; - return -EINVAL; - } - - /* Verify the length of the command itself */ - if (cmnd_size != fsg->cmnd_size) { - - /* Special case workaround: There are plenty of buggy SCSI - * implementations. Many have issues with cbw->Length - * field passing a wrong command size. For those cases we - * always try to work around the problem by using the length - * sent by the host side provided it is at least as large - * as the correct command length. - * Examples of such cases would be MS-Windows, which issues - * REQUEST SENSE with cbw->Length == 12 where it should - * be 6, and xbox360 issuing INQUIRY, TEST UNIT READY and - * REQUEST SENSE with cbw->Length == 10 where it should - * be 6 as well. - */ - if (cmnd_size <= fsg->cmnd_size) { - DBG(fsg, "%s is buggy! Expected length %d " - "but we got %d\n", name, - cmnd_size, fsg->cmnd_size); - cmnd_size = fsg->cmnd_size; - } else { - fsg->phase_error = 1; - return -EINVAL; - } - } - - /* Check that the LUN values are consistent */ - if (transport_is_bbb()) { - if (fsg->lun != lun) - DBG(fsg, "using LUN %d from CBW, " - "not LUN %d from CDB\n", - fsg->lun, lun); - } - - /* Check the LUN */ - curlun = fsg->curlun; - if (curlun) { - if (fsg->cmnd[0] != REQUEST_SENSE) { - curlun->sense_data = SS_NO_SENSE; - curlun->sense_data_info = 0; - curlun->info_valid = 0; - } - } else { - fsg->bad_lun_okay = 0; - - /* INQUIRY and REQUEST SENSE commands are explicitly allowed - * to use unsupported LUNs; all others may not. */ - if (fsg->cmnd[0] != INQUIRY && - fsg->cmnd[0] != REQUEST_SENSE) { - DBG(fsg, "unsupported LUN %d\n", fsg->lun); - return -EINVAL; - } - } - - /* If a unit attention condition exists, only INQUIRY and - * REQUEST SENSE commands are allowed; anything else must fail. */ - if (curlun && curlun->unit_attention_data != SS_NO_SENSE && - fsg->cmnd[0] != INQUIRY && - fsg->cmnd[0] != REQUEST_SENSE) { - curlun->sense_data = curlun->unit_attention_data; - curlun->unit_attention_data = SS_NO_SENSE; - return -EINVAL; - } - - /* Check that only command bytes listed in the mask are non-zero */ - fsg->cmnd[1] &= 0x1f; // Mask away the LUN - for (i = 1; i < cmnd_size; ++i) { - if (fsg->cmnd[i] && !(mask & (1 << i))) { - if (curlun) - curlun->sense_data = SS_INVALID_FIELD_IN_CDB; - return -EINVAL; - } - } - - /* If the medium isn't mounted and the command needs to access - * it, return an error. */ - if (curlun && !fsg_lun_is_open(curlun) && needs_medium) { - curlun->sense_data = SS_MEDIUM_NOT_PRESENT; - return -EINVAL; - } - - return 0; -} - -/* wrapper of check_command for data size in blocks handling */ -static int check_command_size_in_blocks(struct fsg_dev *fsg, int cmnd_size, - enum data_direction data_dir, unsigned int mask, - int needs_medium, const char *name) -{ - if (fsg->curlun) - fsg->data_size_from_cmnd <<= fsg->curlun->blkbits; - return check_command(fsg, cmnd_size, data_dir, - mask, needs_medium, name); -} - -static int do_scsi_command(struct fsg_dev *fsg) -{ - struct fsg_buffhd *bh; - int rc; - int reply = -EINVAL; - int i; - static char unknown[16]; - - dump_cdb(fsg); - - /* Wait for the next buffer to become available for data or status */ - bh = fsg->next_buffhd_to_drain = fsg->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(fsg); - if (rc) - return rc; - } - fsg->phase_error = 0; - fsg->short_packet_received = 0; - - down_read(&fsg->filesem); // We're using the backing file - switch (fsg->cmnd[0]) { - - case INQUIRY: - fsg->data_size_from_cmnd = fsg->cmnd[4]; - if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST, - (1<<4), 0, - "INQUIRY")) == 0) - reply = do_inquiry(fsg, bh); - break; - - case MODE_SELECT: - fsg->data_size_from_cmnd = fsg->cmnd[4]; - if ((reply = check_command(fsg, 6, DATA_DIR_FROM_HOST, - (1<<1) | (1<<4), 0, - "MODE SELECT(6)")) == 0) - reply = do_mode_select(fsg, bh); - break; - - case MODE_SELECT_10: - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST, - (1<<1) | (3<<7), 0, - "MODE SELECT(10)")) == 0) - reply = do_mode_select(fsg, bh); - break; - - case MODE_SENSE: - fsg->data_size_from_cmnd = fsg->cmnd[4]; - if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST, - (1<<1) | (1<<2) | (1<<4), 0, - "MODE SENSE(6)")) == 0) - reply = do_mode_sense(fsg, bh); - break; - - case MODE_SENSE_10: - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, - (1<<1) | (1<<2) | (3<<7), 0, - "MODE SENSE(10)")) == 0) - reply = do_mode_sense(fsg, bh); - break; - - case ALLOW_MEDIUM_REMOVAL: - fsg->data_size_from_cmnd = 0; - if ((reply = check_command(fsg, 6, DATA_DIR_NONE, - (1<<4), 0, - "PREVENT-ALLOW MEDIUM REMOVAL")) == 0) - reply = do_prevent_allow(fsg); - break; - - case READ_6: - i = fsg->cmnd[4]; - fsg->data_size_from_cmnd = (i == 0) ? 256 : i; - if ((reply = check_command_size_in_blocks(fsg, 6, - DATA_DIR_TO_HOST, - (7<<1) | (1<<4), 1, - "READ(6)")) == 0) - reply = do_read(fsg); - break; - - case READ_10: - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command_size_in_blocks(fsg, 10, - DATA_DIR_TO_HOST, - (1<<1) | (0xf<<2) | (3<<7), 1, - "READ(10)")) == 0) - reply = do_read(fsg); - break; - - case READ_12: - fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]); - if ((reply = check_command_size_in_blocks(fsg, 12, - DATA_DIR_TO_HOST, - (1<<1) | (0xf<<2) | (0xf<<6), 1, - "READ(12)")) == 0) - reply = do_read(fsg); - break; - - case READ_CAPACITY: - fsg->data_size_from_cmnd = 8; - if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, - (0xf<<2) | (1<<8), 1, - "READ CAPACITY")) == 0) - reply = do_read_capacity(fsg, bh); - break; - - case READ_HEADER: - if (!mod_data.cdrom) - goto unknown_cmnd; - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, - (3<<7) | (0x1f<<1), 1, - "READ HEADER")) == 0) - reply = do_read_header(fsg, bh); - break; - - case READ_TOC: - if (!mod_data.cdrom) - goto unknown_cmnd; - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, - (7<<6) | (1<<1), 1, - "READ TOC")) == 0) - reply = do_read_toc(fsg, bh); - break; - - case READ_FORMAT_CAPACITIES: - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, - (3<<7), 1, - "READ FORMAT CAPACITIES")) == 0) - reply = do_read_format_capacities(fsg, bh); - break; - - case REQUEST_SENSE: - fsg->data_size_from_cmnd = fsg->cmnd[4]; - if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST, - (1<<4), 0, - "REQUEST SENSE")) == 0) - reply = do_request_sense(fsg, bh); - break; - - case START_STOP: - fsg->data_size_from_cmnd = 0; - if ((reply = check_command(fsg, 6, DATA_DIR_NONE, - (1<<1) | (1<<4), 0, - "START-STOP UNIT")) == 0) - reply = do_start_stop(fsg); - break; - - case SYNCHRONIZE_CACHE: - fsg->data_size_from_cmnd = 0; - if ((reply = check_command(fsg, 10, DATA_DIR_NONE, - (0xf<<2) | (3<<7), 1, - "SYNCHRONIZE CACHE")) == 0) - reply = do_synchronize_cache(fsg); - break; - - case TEST_UNIT_READY: - fsg->data_size_from_cmnd = 0; - reply = check_command(fsg, 6, DATA_DIR_NONE, - 0, 1, - "TEST UNIT READY"); - break; - - /* Although optional, this command is used by MS-Windows. We - * support a minimal version: BytChk must be 0. */ - case VERIFY: - fsg->data_size_from_cmnd = 0; - if ((reply = check_command(fsg, 10, DATA_DIR_NONE, - (1<<1) | (0xf<<2) | (3<<7), 1, - "VERIFY")) == 0) - reply = do_verify(fsg); - break; - - case WRITE_6: - i = fsg->cmnd[4]; - fsg->data_size_from_cmnd = (i == 0) ? 256 : i; - if ((reply = check_command_size_in_blocks(fsg, 6, - DATA_DIR_FROM_HOST, - (7<<1) | (1<<4), 1, - "WRITE(6)")) == 0) - reply = do_write(fsg); - break; - - case WRITE_10: - fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); - if ((reply = check_command_size_in_blocks(fsg, 10, - DATA_DIR_FROM_HOST, - (1<<1) | (0xf<<2) | (3<<7), 1, - "WRITE(10)")) == 0) - reply = do_write(fsg); - break; - - case WRITE_12: - fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]); - if ((reply = check_command_size_in_blocks(fsg, 12, - DATA_DIR_FROM_HOST, - (1<<1) | (0xf<<2) | (0xf<<6), 1, - "WRITE(12)")) == 0) - reply = do_write(fsg); - break; - - /* Some mandatory commands that we recognize but don't implement. - * They don't mean much in this setting. It's left as an exercise - * for anyone interested to implement RESERVE and RELEASE in terms - * of Posix locks. */ - case FORMAT_UNIT: - case RELEASE: - case RESERVE: - case SEND_DIAGNOSTIC: - // Fall through - - default: - unknown_cmnd: - fsg->data_size_from_cmnd = 0; - sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]); - if ((reply = check_command(fsg, fsg->cmnd_size, - DATA_DIR_UNKNOWN, 0xff, 0, unknown)) == 0) { - fsg->curlun->sense_data = SS_INVALID_COMMAND; - reply = -EINVAL; - } - break; - } - up_read(&fsg->filesem); - - if (reply == -EINTR || signal_pending(current)) - return -EINTR; - - /* Set up the single reply buffer for finish_reply() */ - if (reply == -EINVAL) - reply = 0; // Error reply length - if (reply >= 0 && fsg->data_dir == DATA_DIR_TO_HOST) { - reply = min((u32) reply, fsg->data_size_from_cmnd); - bh->inreq->length = reply; - bh->state = BUF_STATE_FULL; - fsg->residue -= reply; - } // Otherwise it's already set - - return 0; -} - - -/*-------------------------------------------------------------------------*/ - -static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) -{ - struct usb_request *req = bh->outreq; - struct fsg_bulk_cb_wrap *cbw = req->buf; - - /* Was this a real packet? Should it be ignored? */ - if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags)) - return -EINVAL; - - /* Is the CBW valid? */ - if (req->actual != USB_BULK_CB_WRAP_LEN || - cbw->Signature != cpu_to_le32( - USB_BULK_CB_SIG)) { - DBG(fsg, "invalid CBW: len %u sig 0x%x\n", - req->actual, - le32_to_cpu(cbw->Signature)); - - /* The Bulk-only spec says we MUST stall the IN endpoint - * (6.6.1), so it's unavoidable. It also says we must - * retain this state until the next reset, but there's - * no way to tell the controller driver it should ignore - * Clear-Feature(HALT) requests. - * - * We aren't required to halt the OUT endpoint; instead - * we can simply accept and discard any data received - * until the next reset. */ - wedge_bulk_in_endpoint(fsg); - set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); - return -EINVAL; - } - - /* Is the CBW meaningful? */ - if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG || - cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) { - DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, " - "cmdlen %u\n", - cbw->Lun, cbw->Flags, cbw->Length); - - /* We can do anything we want here, so let's stall the - * bulk pipes if we are allowed to. */ - if (mod_data.can_stall) { - fsg_set_halt(fsg, fsg->bulk_out); - halt_bulk_in_endpoint(fsg); - } - return -EINVAL; - } - - /* Save the command for later */ - fsg->cmnd_size = cbw->Length; - memcpy(fsg->cmnd, cbw->CDB, fsg->cmnd_size); - if (cbw->Flags & USB_BULK_IN_FLAG) - fsg->data_dir = DATA_DIR_TO_HOST; - else - fsg->data_dir = DATA_DIR_FROM_HOST; - fsg->data_size = le32_to_cpu(cbw->DataTransferLength); - if (fsg->data_size == 0) - fsg->data_dir = DATA_DIR_NONE; - fsg->lun = cbw->Lun; - fsg->tag = cbw->Tag; - return 0; -} - - -static int get_next_command(struct fsg_dev *fsg) -{ - struct fsg_buffhd *bh; - int rc = 0; - - if (transport_is_bbb()) { - - /* Wait for the next buffer to become available */ - bh = fsg->next_buffhd_to_fill; - while (bh->state != BUF_STATE_EMPTY) { - rc = sleep_thread(fsg); - if (rc) - return rc; - } - - /* Queue a request to read a Bulk-only CBW */ - set_bulk_out_req_length(fsg, bh, USB_BULK_CB_WRAP_LEN); - start_transfer(fsg, fsg->bulk_out, bh->outreq, - &bh->outreq_busy, &bh->state); - - /* We will drain the buffer in software, which means we - * can reuse it for the next filling. No need to advance - * next_buffhd_to_fill. */ - - /* Wait for the CBW to arrive */ - while (bh->state != BUF_STATE_FULL) { - rc = sleep_thread(fsg); - if (rc) - return rc; - } - smp_rmb(); - rc = received_cbw(fsg, bh); - bh->state = BUF_STATE_EMPTY; - - } else { // USB_PR_CB or USB_PR_CBI - - /* Wait for the next command to arrive */ - while (fsg->cbbuf_cmnd_size == 0) { - rc = sleep_thread(fsg); - if (rc) - return rc; - } - - /* Is the previous status interrupt request still busy? - * The host is allowed to skip reading the status, - * so we must cancel it. */ - if (fsg->intreq_busy) - usb_ep_dequeue(fsg->intr_in, fsg->intreq); - - /* Copy the command and mark the buffer empty */ - fsg->data_dir = DATA_DIR_UNKNOWN; - spin_lock_irq(&fsg->lock); - fsg->cmnd_size = fsg->cbbuf_cmnd_size; - memcpy(fsg->cmnd, fsg->cbbuf_cmnd, fsg->cmnd_size); - fsg->cbbuf_cmnd_size = 0; - spin_unlock_irq(&fsg->lock); - - /* Use LUN from the command */ - fsg->lun = fsg->cmnd[1] >> 5; - } - - /* Update current lun */ - if (fsg->lun >= 0 && fsg->lun < fsg->nluns) - fsg->curlun = &fsg->luns[fsg->lun]; - else - fsg->curlun = NULL; - - return rc; -} - - -/*-------------------------------------------------------------------------*/ - -static int enable_endpoint(struct fsg_dev *fsg, struct usb_ep *ep, - const struct usb_endpoint_descriptor *d) -{ - int rc; - - ep->driver_data = fsg; - ep->desc = d; - rc = usb_ep_enable(ep); - if (rc) - ERROR(fsg, "can't enable %s, result %d\n", ep->name, rc); - return rc; -} - -static int alloc_request(struct fsg_dev *fsg, struct usb_ep *ep, - struct usb_request **preq) -{ - *preq = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (*preq) - return 0; - ERROR(fsg, "can't allocate request for %s\n", ep->name); - return -ENOMEM; -} - -/* - * Reset interface setting and re-init endpoint state (toggle etc). - * Call with altsetting < 0 to disable the interface. The only other - * available altsetting is 0, which enables the interface. - */ -static int do_set_interface(struct fsg_dev *fsg, int altsetting) -{ - int rc = 0; - int i; - const struct usb_endpoint_descriptor *d; - - if (fsg->running) - DBG(fsg, "reset interface\n"); - -reset: - /* Deallocate the requests */ - for (i = 0; i < fsg_num_buffers; ++i) { - struct fsg_buffhd *bh = &fsg->buffhds[i]; - - if (bh->inreq) { - usb_ep_free_request(fsg->bulk_in, bh->inreq); - bh->inreq = NULL; - } - if (bh->outreq) { - usb_ep_free_request(fsg->bulk_out, bh->outreq); - bh->outreq = NULL; - } - } - if (fsg->intreq) { - usb_ep_free_request(fsg->intr_in, fsg->intreq); - fsg->intreq = NULL; - } - - /* Disable the endpoints */ - if (fsg->bulk_in_enabled) { - usb_ep_disable(fsg->bulk_in); - fsg->bulk_in_enabled = 0; - } - if (fsg->bulk_out_enabled) { - usb_ep_disable(fsg->bulk_out); - fsg->bulk_out_enabled = 0; - } - if (fsg->intr_in_enabled) { - usb_ep_disable(fsg->intr_in); - fsg->intr_in_enabled = 0; - } - - fsg->running = 0; - if (altsetting < 0 || rc != 0) - return rc; - - DBG(fsg, "set interface %d\n", altsetting); - - /* Enable the endpoints */ - d = fsg_ep_desc(fsg->gadget, - &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc, - &fsg_ss_bulk_in_desc); - if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0) - goto reset; - fsg->bulk_in_enabled = 1; - - d = fsg_ep_desc(fsg->gadget, - &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc, - &fsg_ss_bulk_out_desc); - if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0) - goto reset; - fsg->bulk_out_enabled = 1; - fsg->bulk_out_maxpacket = usb_endpoint_maxp(d); - clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); - - if (transport_is_cbi()) { - d = fsg_ep_desc(fsg->gadget, - &fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc, - &fsg_ss_intr_in_desc); - if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0) - goto reset; - fsg->intr_in_enabled = 1; - } - - /* Allocate the requests */ - for (i = 0; i < fsg_num_buffers; ++i) { - struct fsg_buffhd *bh = &fsg->buffhds[i]; - - if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0) - goto reset; - if ((rc = alloc_request(fsg, fsg->bulk_out, &bh->outreq)) != 0) - goto reset; - bh->inreq->buf = bh->outreq->buf = bh->buf; - bh->inreq->context = bh->outreq->context = bh; - bh->inreq->complete = bulk_in_complete; - bh->outreq->complete = bulk_out_complete; - } - if (transport_is_cbi()) { - if ((rc = alloc_request(fsg, fsg->intr_in, &fsg->intreq)) != 0) - goto reset; - fsg->intreq->complete = intr_in_complete; - } - - fsg->running = 1; - for (i = 0; i < fsg->nluns; ++i) - fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED; - return rc; -} - - -/* - * Change our operational configuration. This code must agree with the code - * that returns config descriptors, and with interface altsetting code. - * - * It's also responsible for power management interactions. Some - * configurations might not work with our current power sources. - * For now we just assume the gadget is always self-powered. - */ -static int do_set_config(struct fsg_dev *fsg, u8 new_config) -{ - int rc = 0; - - /* Disable the single interface */ - if (fsg->config != 0) { - DBG(fsg, "reset config\n"); - fsg->config = 0; - rc = do_set_interface(fsg, -1); - } - - /* Enable the interface */ - if (new_config != 0) { - fsg->config = new_config; - if ((rc = do_set_interface(fsg, 0)) != 0) - fsg->config = 0; // Reset on errors - else - INFO(fsg, "%s config #%d\n", - usb_speed_string(fsg->gadget->speed), - fsg->config); - } - return rc; -} - - -/*-------------------------------------------------------------------------*/ - -static void handle_exception(struct fsg_dev *fsg) -{ - siginfo_t info; - int sig; - int i; - int num_active; - struct fsg_buffhd *bh; - enum fsg_state old_state; - u8 new_config; - struct fsg_lun *curlun; - unsigned int exception_req_tag; - int rc; - - /* Clear the existing signals. Anything but SIGUSR1 is converted - * into a high-priority EXIT exception. */ - for (;;) { - sig = dequeue_signal_lock(current, ¤t->blocked, &info); - if (!sig) - break; - if (sig != SIGUSR1) { - if (fsg->state < FSG_STATE_EXIT) - DBG(fsg, "Main thread exiting on signal\n"); - raise_exception(fsg, FSG_STATE_EXIT); - } - } - - /* Cancel all the pending transfers */ - if (fsg->intreq_busy) - usb_ep_dequeue(fsg->intr_in, fsg->intreq); - for (i = 0; i < fsg_num_buffers; ++i) { - bh = &fsg->buffhds[i]; - if (bh->inreq_busy) - usb_ep_dequeue(fsg->bulk_in, bh->inreq); - if (bh->outreq_busy) - usb_ep_dequeue(fsg->bulk_out, bh->outreq); - } - - /* Wait until everything is idle */ - for (;;) { - num_active = fsg->intreq_busy; - for (i = 0; i < fsg_num_buffers; ++i) { - bh = &fsg->buffhds[i]; - num_active += bh->inreq_busy + bh->outreq_busy; - } - if (num_active == 0) - break; - if (sleep_thread(fsg)) - return; - } - - /* Clear out the controller's fifos */ - if (fsg->bulk_in_enabled) - usb_ep_fifo_flush(fsg->bulk_in); - if (fsg->bulk_out_enabled) - usb_ep_fifo_flush(fsg->bulk_out); - if (fsg->intr_in_enabled) - usb_ep_fifo_flush(fsg->intr_in); - - /* Reset the I/O buffer states and pointers, the SCSI - * state, and the exception. Then invoke the handler. */ - spin_lock_irq(&fsg->lock); - - for (i = 0; i < fsg_num_buffers; ++i) { - bh = &fsg->buffhds[i]; - bh->state = BUF_STATE_EMPTY; - } - fsg->next_buffhd_to_fill = fsg->next_buffhd_to_drain = - &fsg->buffhds[0]; - - exception_req_tag = fsg->exception_req_tag; - new_config = fsg->new_config; - old_state = fsg->state; - - if (old_state == FSG_STATE_ABORT_BULK_OUT) - fsg->state = FSG_STATE_STATUS_PHASE; - else { - for (i = 0; i < fsg->nluns; ++i) { - curlun = &fsg->luns[i]; - curlun->prevent_medium_removal = 0; - curlun->sense_data = curlun->unit_attention_data = - SS_NO_SENSE; - curlun->sense_data_info = 0; - curlun->info_valid = 0; - } - fsg->state = FSG_STATE_IDLE; - } - spin_unlock_irq(&fsg->lock); - - /* Carry out any extra actions required for the exception */ - switch (old_state) { - default: - break; - - case FSG_STATE_ABORT_BULK_OUT: - send_status(fsg); - spin_lock_irq(&fsg->lock); - if (fsg->state == FSG_STATE_STATUS_PHASE) - fsg->state = FSG_STATE_IDLE; - spin_unlock_irq(&fsg->lock); - break; - - case FSG_STATE_RESET: - /* In case we were forced against our will to halt a - * bulk endpoint, clear the halt now. (The SuperH UDC - * requires this.) */ - if (test_and_clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags)) - usb_ep_clear_halt(fsg->bulk_in); - - if (transport_is_bbb()) { - if (fsg->ep0_req_tag == exception_req_tag) - ep0_queue(fsg); // Complete the status stage - - } else if (transport_is_cbi()) - send_status(fsg); // Status by interrupt pipe - - /* Technically this should go here, but it would only be - * a waste of time. Ditto for the INTERFACE_CHANGE and - * CONFIG_CHANGE cases. */ - // for (i = 0; i < fsg->nluns; ++i) - // fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED; - break; - - case FSG_STATE_INTERFACE_CHANGE: - rc = do_set_interface(fsg, 0); - if (fsg->ep0_req_tag != exception_req_tag) - break; - if (rc != 0) // STALL on errors - fsg_set_halt(fsg, fsg->ep0); - else // Complete the status stage - ep0_queue(fsg); - break; - - case FSG_STATE_CONFIG_CHANGE: - rc = do_set_config(fsg, new_config); - if (fsg->ep0_req_tag != exception_req_tag) - break; - if (rc != 0) // STALL on errors - fsg_set_halt(fsg, fsg->ep0); - else // Complete the status stage - ep0_queue(fsg); - break; - - case FSG_STATE_DISCONNECT: - for (i = 0; i < fsg->nluns; ++i) - fsg_lun_fsync_sub(fsg->luns + i); - do_set_config(fsg, 0); // Unconfigured state - break; - - case FSG_STATE_EXIT: - case FSG_STATE_TERMINATED: - do_set_config(fsg, 0); // Free resources - spin_lock_irq(&fsg->lock); - fsg->state = FSG_STATE_TERMINATED; // Stop the thread - spin_unlock_irq(&fsg->lock); - break; - } -} - - -/*-------------------------------------------------------------------------*/ - -static int fsg_main_thread(void *fsg_) -{ - struct fsg_dev *fsg = fsg_; - - /* Allow the thread to be killed by a signal, but set the signal mask - * to block everything but INT, TERM, KILL, and USR1. */ - allow_signal(SIGINT); - allow_signal(SIGTERM); - allow_signal(SIGKILL); - allow_signal(SIGUSR1); - - /* Allow the thread to be frozen */ - set_freezable(); - - /* Arrange for userspace references to be interpreted as kernel - * pointers. That way we can pass a kernel pointer to a routine - * that expects a __user pointer and it will work okay. */ - set_fs(get_ds()); - - /* The main loop */ - while (fsg->state != FSG_STATE_TERMINATED) { - if (exception_in_progress(fsg) || signal_pending(current)) { - handle_exception(fsg); - continue; - } - - if (!fsg->running) { - sleep_thread(fsg); - continue; - } - - if (get_next_command(fsg)) - continue; - - spin_lock_irq(&fsg->lock); - if (!exception_in_progress(fsg)) - fsg->state = FSG_STATE_DATA_PHASE; - spin_unlock_irq(&fsg->lock); - - if (do_scsi_command(fsg) || finish_reply(fsg)) - continue; - - spin_lock_irq(&fsg->lock); - if (!exception_in_progress(fsg)) - fsg->state = FSG_STATE_STATUS_PHASE; - spin_unlock_irq(&fsg->lock); - - if (send_status(fsg)) - continue; - - spin_lock_irq(&fsg->lock); - if (!exception_in_progress(fsg)) - fsg->state = FSG_STATE_IDLE; - spin_unlock_irq(&fsg->lock); - } - - spin_lock_irq(&fsg->lock); - fsg->thread_task = NULL; - spin_unlock_irq(&fsg->lock); - - /* If we are exiting because of a signal, unregister the - * gadget driver. */ - if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags)) - usb_gadget_unregister_driver(&fsg_driver); - - /* Let the unbind and cleanup routines know the thread has exited */ - complete_and_exit(&fsg->thread_notifier, 0); -} - - -/*-------------------------------------------------------------------------*/ - - -/* The write permissions and store_xxx pointers are set in fsg_bind() */ -static DEVICE_ATTR(ro, 0444, fsg_show_ro, NULL); -static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, NULL); -static DEVICE_ATTR(file, 0444, fsg_show_file, NULL); - - -/*-------------------------------------------------------------------------*/ - -static void fsg_release(struct kref *ref) -{ - struct fsg_dev *fsg = container_of(ref, struct fsg_dev, ref); - - kfree(fsg->luns); - kfree(fsg); -} - -static void lun_release(struct device *dev) -{ - struct rw_semaphore *filesem = dev_get_drvdata(dev); - struct fsg_dev *fsg = - container_of(filesem, struct fsg_dev, filesem); - - kref_put(&fsg->ref, fsg_release); -} - -static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget) -{ - struct fsg_dev *fsg = get_gadget_data(gadget); - int i; - struct fsg_lun *curlun; - struct usb_request *req = fsg->ep0req; - - DBG(fsg, "unbind\n"); - clear_bit(REGISTERED, &fsg->atomic_bitflags); - - /* If the thread isn't already dead, tell it to exit now */ - if (fsg->state != FSG_STATE_TERMINATED) { - raise_exception(fsg, FSG_STATE_EXIT); - wait_for_completion(&fsg->thread_notifier); - - /* The cleanup routine waits for this completion also */ - complete(&fsg->thread_notifier); - } - - /* Unregister the sysfs attribute files and the LUNs */ - for (i = 0; i < fsg->nluns; ++i) { - curlun = &fsg->luns[i]; - if (curlun->registered) { - device_remove_file(&curlun->dev, &dev_attr_nofua); - device_remove_file(&curlun->dev, &dev_attr_ro); - device_remove_file(&curlun->dev, &dev_attr_file); - fsg_lun_close(curlun); - device_unregister(&curlun->dev); - curlun->registered = 0; - } - } - - /* Free the data buffers */ - for (i = 0; i < fsg_num_buffers; ++i) - kfree(fsg->buffhds[i].buf); - - /* Free the request and buffer for endpoint 0 */ - if (req) { - kfree(req->buf); - usb_ep_free_request(fsg->ep0, req); - } - - set_gadget_data(gadget, NULL); -} - - -static int __init check_parameters(struct fsg_dev *fsg) -{ - int prot; - int gcnum; - - /* Store the default values */ - mod_data.transport_type = USB_PR_BULK; - mod_data.transport_name = "Bulk-only"; - mod_data.protocol_type = USB_SC_SCSI; - mod_data.protocol_name = "Transparent SCSI"; - - /* Some peripheral controllers are known not to be able to - * halt bulk endpoints correctly. If one of them is present, - * disable stalls. - */ - if (gadget_is_at91(fsg->gadget)) - mod_data.can_stall = 0; - - if (mod_data.release == 0xffff) { // Parameter wasn't set - gcnum = usb_gadget_controller_number(fsg->gadget); - if (gcnum >= 0) - mod_data.release = 0x0300 + gcnum; - else { - WARNING(fsg, "controller '%s' not recognized\n", - fsg->gadget->name); - mod_data.release = 0x0399; - } - } - - prot = simple_strtol(mod_data.protocol_parm, NULL, 0); - -#ifdef CONFIG_USB_FILE_STORAGE_TEST - if (strnicmp(mod_data.transport_parm, "BBB", 10) == 0) { - ; // Use default setting - } else if (strnicmp(mod_data.transport_parm, "CB", 10) == 0) { - mod_data.transport_type = USB_PR_CB; - mod_data.transport_name = "Control-Bulk"; - } else if (strnicmp(mod_data.transport_parm, "CBI", 10) == 0) { - mod_data.transport_type = USB_PR_CBI; - mod_data.transport_name = "Control-Bulk-Interrupt"; - } else { - ERROR(fsg, "invalid transport: %s\n", mod_data.transport_parm); - return -EINVAL; - } - - if (strnicmp(mod_data.protocol_parm, "SCSI", 10) == 0 || - prot == USB_SC_SCSI) { - ; // Use default setting - } else if (strnicmp(mod_data.protocol_parm, "RBC", 10) == 0 || - prot == USB_SC_RBC) { - mod_data.protocol_type = USB_SC_RBC; - mod_data.protocol_name = "RBC"; - } else if (strnicmp(mod_data.protocol_parm, "8020", 4) == 0 || - strnicmp(mod_data.protocol_parm, "ATAPI", 10) == 0 || - prot == USB_SC_8020) { - mod_data.protocol_type = USB_SC_8020; - mod_data.protocol_name = "8020i (ATAPI)"; - } else if (strnicmp(mod_data.protocol_parm, "QIC", 3) == 0 || - prot == USB_SC_QIC) { - mod_data.protocol_type = USB_SC_QIC; - mod_data.protocol_name = "QIC-157"; - } else if (strnicmp(mod_data.protocol_parm, "UFI", 10) == 0 || - prot == USB_SC_UFI) { - mod_data.protocol_type = USB_SC_UFI; - mod_data.protocol_name = "UFI"; - } else if (strnicmp(mod_data.protocol_parm, "8070", 4) == 0 || - prot == USB_SC_8070) { - mod_data.protocol_type = USB_SC_8070; - mod_data.protocol_name = "8070i"; - } else { - ERROR(fsg, "invalid protocol: %s\n", mod_data.protocol_parm); - return -EINVAL; - } - - mod_data.buflen &= PAGE_CACHE_MASK; - if (mod_data.buflen <= 0) { - ERROR(fsg, "invalid buflen\n"); - return -ETOOSMALL; - } - -#endif /* CONFIG_USB_FILE_STORAGE_TEST */ - - /* Serial string handling. - * On a real device, the serial string would be loaded - * from permanent storage. */ - if (mod_data.serial) { - const char *ch; - unsigned len = 0; - - /* Sanity check : - * The CB[I] specification limits the serial string to - * 12 uppercase hexadecimal characters. - * BBB need at least 12 uppercase hexadecimal characters, - * with a maximum of 126. */ - for (ch = mod_data.serial; *ch; ++ch) { - ++len; - if ((*ch < '0' || *ch > '9') && - (*ch < 'A' || *ch > 'F')) { /* not uppercase hex */ - WARNING(fsg, - "Invalid serial string character: %c\n", - *ch); - goto no_serial; - } - } - if (len > 126 || - (mod_data.transport_type == USB_PR_BULK && len < 12) || - (mod_data.transport_type != USB_PR_BULK && len > 12)) { - WARNING(fsg, "Invalid serial string length!\n"); - goto no_serial; - } - fsg_strings[FSG_STRING_SERIAL - 1].s = mod_data.serial; - } else { - WARNING(fsg, "No serial-number string provided!\n"); - no_serial: - device_desc.iSerialNumber = 0; - } - - return 0; -} - - -static int __init fsg_bind(struct usb_gadget *gadget) -{ - struct fsg_dev *fsg = the_fsg; - int rc; - int i; - struct fsg_lun *curlun; - struct usb_ep *ep; - struct usb_request *req; - char *pathbuf, *p; - - fsg->gadget = gadget; - set_gadget_data(gadget, fsg); - fsg->ep0 = gadget->ep0; - fsg->ep0->driver_data = fsg; - - if ((rc = check_parameters(fsg)) != 0) - goto out; - - if (mod_data.removable) { // Enable the store_xxx attributes - dev_attr_file.attr.mode = 0644; - dev_attr_file.store = fsg_store_file; - if (!mod_data.cdrom) { - dev_attr_ro.attr.mode = 0644; - dev_attr_ro.store = fsg_store_ro; - } - } - - /* Only for removable media? */ - dev_attr_nofua.attr.mode = 0644; - dev_attr_nofua.store = fsg_store_nofua; - - /* Find out how many LUNs there should be */ - i = mod_data.nluns; - if (i == 0) - i = max(mod_data.num_filenames, 1u); - if (i > FSG_MAX_LUNS) { - ERROR(fsg, "invalid number of LUNs: %d\n", i); - rc = -EINVAL; - goto out; - } - - /* Create the LUNs, open their backing files, and register the - * LUN devices in sysfs. */ - fsg->luns = kzalloc(i * sizeof(struct fsg_lun), GFP_KERNEL); - if (!fsg->luns) { - rc = -ENOMEM; - goto out; - } - fsg->nluns = i; - - for (i = 0; i < fsg->nluns; ++i) { - curlun = &fsg->luns[i]; - curlun->cdrom = !!mod_data.cdrom; - curlun->ro = mod_data.cdrom || mod_data.ro[i]; - curlun->initially_ro = curlun->ro; - curlun->removable = mod_data.removable; - curlun->nofua = mod_data.nofua[i]; - curlun->dev.release = lun_release; - curlun->dev.parent = &gadget->dev; - curlun->dev.driver = &fsg_driver.driver; - dev_set_drvdata(&curlun->dev, &fsg->filesem); - dev_set_name(&curlun->dev,"%s-lun%d", - dev_name(&gadget->dev), i); - - kref_get(&fsg->ref); - rc = device_register(&curlun->dev); - if (rc) { - INFO(fsg, "failed to register LUN%d: %d\n", i, rc); - put_device(&curlun->dev); - goto out; - } - curlun->registered = 1; - - rc = device_create_file(&curlun->dev, &dev_attr_ro); - if (rc) - goto out; - rc = device_create_file(&curlun->dev, &dev_attr_nofua); - if (rc) - goto out; - rc = device_create_file(&curlun->dev, &dev_attr_file); - if (rc) - goto out; - - if (mod_data.file[i] && *mod_data.file[i]) { - rc = fsg_lun_open(curlun, mod_data.file[i]); - if (rc) - goto out; - } else if (!mod_data.removable) { - ERROR(fsg, "no file given for LUN%d\n", i); - rc = -EINVAL; - goto out; - } - } - - /* Find all the endpoints we will use */ - usb_ep_autoconfig_reset(gadget); - ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc); - if (!ep) - goto autoconf_fail; - ep->driver_data = fsg; // claim the endpoint - fsg->bulk_in = ep; - - ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc); - if (!ep) - goto autoconf_fail; - ep->driver_data = fsg; // claim the endpoint - fsg->bulk_out = ep; - - if (transport_is_cbi()) { - ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc); - if (!ep) - goto autoconf_fail; - ep->driver_data = fsg; // claim the endpoint - fsg->intr_in = ep; - } - - /* Fix up the descriptors */ - device_desc.idVendor = cpu_to_le16(mod_data.vendor); - device_desc.idProduct = cpu_to_le16(mod_data.product); - device_desc.bcdDevice = cpu_to_le16(mod_data.release); - - i = (transport_is_cbi() ? 3 : 2); // Number of endpoints - fsg_intf_desc.bNumEndpoints = i; - fsg_intf_desc.bInterfaceSubClass = mod_data.protocol_type; - fsg_intf_desc.bInterfaceProtocol = mod_data.transport_type; - fsg_fs_function[i + FSG_FS_FUNCTION_PRE_EP_ENTRIES] = NULL; - - if (gadget_is_dualspeed(gadget)) { - fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL; - - /* Assume endpoint addresses are the same for both speeds */ - fsg_hs_bulk_in_desc.bEndpointAddress = - fsg_fs_bulk_in_desc.bEndpointAddress; - fsg_hs_bulk_out_desc.bEndpointAddress = - fsg_fs_bulk_out_desc.bEndpointAddress; - fsg_hs_intr_in_desc.bEndpointAddress = - fsg_fs_intr_in_desc.bEndpointAddress; - } - - if (gadget_is_superspeed(gadget)) { - unsigned max_burst; - - fsg_ss_function[i + FSG_SS_FUNCTION_PRE_EP_ENTRIES] = NULL; - - /* Calculate bMaxBurst, we know packet size is 1024 */ - max_burst = min_t(unsigned, mod_data.buflen / 1024, 15); - - /* Assume endpoint addresses are the same for both speeds */ - fsg_ss_bulk_in_desc.bEndpointAddress = - fsg_fs_bulk_in_desc.bEndpointAddress; - fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst; - - fsg_ss_bulk_out_desc.bEndpointAddress = - fsg_fs_bulk_out_desc.bEndpointAddress; - fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst; - } - - if (gadget_is_otg(gadget)) - fsg_otg_desc.bmAttributes |= USB_OTG_HNP; - - rc = -ENOMEM; - - /* Allocate the request and buffer for endpoint 0 */ - fsg->ep0req = req = usb_ep_alloc_request(fsg->ep0, GFP_KERNEL); - if (!req) - goto out; - req->buf = kmalloc(EP0_BUFSIZE, GFP_KERNEL); - if (!req->buf) - goto out; - req->complete = ep0_complete; - - /* Allocate the data buffers */ - for (i = 0; i < fsg_num_buffers; ++i) { - struct fsg_buffhd *bh = &fsg->buffhds[i]; - - /* Allocate for the bulk-in endpoint. We assume that - * the buffer will also work with the bulk-out (and - * interrupt-in) endpoint. */ - bh->buf = kmalloc(mod_data.buflen, GFP_KERNEL); - if (!bh->buf) - goto out; - bh->next = bh + 1; - } - fsg->buffhds[fsg_num_buffers - 1].next = &fsg->buffhds[0]; - - /* This should reflect the actual gadget power source */ - usb_gadget_set_selfpowered(gadget); - - snprintf(fsg_string_manufacturer, sizeof fsg_string_manufacturer, - "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - - fsg->thread_task = kthread_create(fsg_main_thread, fsg, - "file-storage-gadget"); - if (IS_ERR(fsg->thread_task)) { - rc = PTR_ERR(fsg->thread_task); - goto out; - } - - INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); - INFO(fsg, "NOTE: This driver is deprecated. " - "Consider using g_mass_storage instead.\n"); - INFO(fsg, "Number of LUNs=%d\n", fsg->nluns); - - pathbuf = kmalloc(PATH_MAX, GFP_KERNEL); - for (i = 0; i < fsg->nluns; ++i) { - curlun = &fsg->luns[i]; - if (fsg_lun_is_open(curlun)) { - p = NULL; - if (pathbuf) { - p = d_path(&curlun->filp->f_path, - pathbuf, PATH_MAX); - if (IS_ERR(p)) - p = NULL; - } - LINFO(curlun, "ro=%d, nofua=%d, file: %s\n", - curlun->ro, curlun->nofua, (p ? p : "(error)")); - } - } - kfree(pathbuf); - - DBG(fsg, "transport=%s (x%02x)\n", - mod_data.transport_name, mod_data.transport_type); - DBG(fsg, "protocol=%s (x%02x)\n", - mod_data.protocol_name, mod_data.protocol_type); - DBG(fsg, "VendorID=x%04x, ProductID=x%04x, Release=x%04x\n", - mod_data.vendor, mod_data.product, mod_data.release); - DBG(fsg, "removable=%d, stall=%d, cdrom=%d, buflen=%u\n", - mod_data.removable, mod_data.can_stall, - mod_data.cdrom, mod_data.buflen); - DBG(fsg, "I/O thread pid: %d\n", task_pid_nr(fsg->thread_task)); - - set_bit(REGISTERED, &fsg->atomic_bitflags); - - /* Tell the thread to start working */ - wake_up_process(fsg->thread_task); - return 0; - -autoconf_fail: - ERROR(fsg, "unable to autoconfigure all endpoints\n"); - rc = -ENOTSUPP; - -out: - fsg->state = FSG_STATE_TERMINATED; // The thread is dead - fsg_unbind(gadget); - complete(&fsg->thread_notifier); - return rc; -} - - -/*-------------------------------------------------------------------------*/ - -static void fsg_suspend(struct usb_gadget *gadget) -{ - struct fsg_dev *fsg = get_gadget_data(gadget); - - DBG(fsg, "suspend\n"); - set_bit(SUSPENDED, &fsg->atomic_bitflags); -} - -static void fsg_resume(struct usb_gadget *gadget) -{ - struct fsg_dev *fsg = get_gadget_data(gadget); - - DBG(fsg, "resume\n"); - clear_bit(SUSPENDED, &fsg->atomic_bitflags); -} - - -/*-------------------------------------------------------------------------*/ - -static struct usb_gadget_driver fsg_driver = { - .max_speed = USB_SPEED_SUPER, - .function = (char *) fsg_string_product, - .unbind = fsg_unbind, - .disconnect = fsg_disconnect, - .setup = fsg_setup, - .suspend = fsg_suspend, - .resume = fsg_resume, - - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - // .release = ... - // .suspend = ... - // .resume = ... - }, -}; - - -static int __init fsg_alloc(void) -{ - struct fsg_dev *fsg; - - fsg = kzalloc(sizeof *fsg + - fsg_num_buffers * sizeof *(fsg->buffhds), GFP_KERNEL); - - if (!fsg) - return -ENOMEM; - spin_lock_init(&fsg->lock); - init_rwsem(&fsg->filesem); - kref_init(&fsg->ref); - init_completion(&fsg->thread_notifier); - - the_fsg = fsg; - return 0; -} - - -static int __init fsg_init(void) -{ - int rc; - struct fsg_dev *fsg; - - rc = fsg_num_buffers_validate(); - if (rc != 0) - return rc; - - if ((rc = fsg_alloc()) != 0) - return rc; - fsg = the_fsg; - if ((rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind)) != 0) - kref_put(&fsg->ref, fsg_release); - return rc; -} -module_init(fsg_init); - - -static void __exit fsg_cleanup(void) -{ - struct fsg_dev *fsg = the_fsg; - - /* Unregister the driver iff the thread hasn't already done so */ - if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags)) - usb_gadget_unregister_driver(&fsg_driver); - - /* Wait for the thread to finish up */ - wait_for_completion(&fsg->thread_notifier); - - kref_put(&fsg->ref, fsg_release); -} -module_exit(fsg_cleanup); diff --git a/drivers/usb/gadget/fotg210-udc.c b/drivers/usb/gadget/fotg210-udc.c new file mode 100644 index 00000000000..e143d69f601 --- /dev/null +++ b/drivers/usb/gadget/fotg210-udc.c @@ -0,0 +1,1216 @@ +/* + * FOTG210 UDC Driver supports Bulk transfer so far + * + * Copyright (C) 2013 Faraday Technology Corporation + * + * Author : Yuan-Hsin Chen <yhchen@faraday-tech.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +#include <linux/dma-mapping.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + +#include "fotg210.h" + +#define DRIVER_DESC "FOTG210 USB Device Controller Driver" +#define DRIVER_VERSION "30-April-2013" + +static const char udc_name[] = "fotg210_udc"; +static const char * const fotg210_ep_name[] = { + "ep0", "ep1", "ep2", "ep3", "ep4"}; + +static void fotg210_disable_fifo_int(struct fotg210_ep *ep) +{ + u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); + + if (ep->dir_in) + value |= DMISGR1_MF_IN_INT(ep->epnum - 1); + else + value |= DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); + iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); +} + +static void fotg210_enable_fifo_int(struct fotg210_ep *ep) +{ + u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); + + if (ep->dir_in) + value &= ~DMISGR1_MF_IN_INT(ep->epnum - 1); + else + value &= ~DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); + iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); +} + +static void fotg210_set_cxdone(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); + + value |= DCFESR_CX_DONE; + iowrite32(value, fotg210->reg + FOTG210_DCFESR); +} + +static void fotg210_done(struct fotg210_ep *ep, struct fotg210_request *req, + int status) +{ + list_del_init(&req->queue); + + /* don't modify queue heads during completion callback */ + if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) + req->req.status = -ESHUTDOWN; + else + req->req.status = status; + + spin_unlock(&ep->fotg210->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&ep->fotg210->lock); + + if (ep->epnum) { + if (list_empty(&ep->queue)) + fotg210_disable_fifo_int(ep); + } else { + fotg210_set_cxdone(ep->fotg210); + } +} + +static void fotg210_fifo_ep_mapping(struct fotg210_ep *ep, u32 epnum, + u32 dir_in) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + + /* Driver should map an ep to a fifo and then map the fifo + * to the ep. What a brain-damaged design! + */ + + /* map a fifo to an ep */ + val = ioread32(fotg210->reg + FOTG210_EPMAP); + val &= ~EPMAP_FIFONOMSK(epnum, dir_in); + val |= EPMAP_FIFONO(epnum, dir_in); + iowrite32(val, fotg210->reg + FOTG210_EPMAP); + + /* map the ep to the fifo */ + val = ioread32(fotg210->reg + FOTG210_FIFOMAP); + val &= ~FIFOMAP_EPNOMSK(epnum); + val |= FIFOMAP_EPNO(epnum); + iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); + + /* enable fifo */ + val = ioread32(fotg210->reg + FOTG210_FIFOCF); + val |= FIFOCF_FIFO_EN(epnum - 1); + iowrite32(val, fotg210->reg + FOTG210_FIFOCF); +} + +static void fotg210_set_fifo_dir(struct fotg210_ep *ep, u32 epnum, u32 dir_in) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + + val = ioread32(fotg210->reg + FOTG210_FIFOMAP); + val |= (dir_in ? FIFOMAP_DIRIN(epnum - 1) : FIFOMAP_DIROUT(epnum - 1)); + iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); +} + +static void fotg210_set_tfrtype(struct fotg210_ep *ep, u32 epnum, u32 type) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + + val = ioread32(fotg210->reg + FOTG210_FIFOCF); + val |= FIFOCF_TYPE(type, epnum - 1); + iowrite32(val, fotg210->reg + FOTG210_FIFOCF); +} + +static void fotg210_set_mps(struct fotg210_ep *ep, u32 epnum, u32 mps, + u32 dir_in) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 val; + u32 offset = dir_in ? FOTG210_INEPMPSR(epnum) : + FOTG210_OUTEPMPSR(epnum); + + val = ioread32(fotg210->reg + offset); + val |= INOUTEPMPSR_MPS(mps); + iowrite32(val, fotg210->reg + offset); +} + +static int fotg210_config_ep(struct fotg210_ep *ep, + const struct usb_endpoint_descriptor *desc) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + + fotg210_set_fifo_dir(ep, ep->epnum, ep->dir_in); + fotg210_set_tfrtype(ep, ep->epnum, ep->type); + fotg210_set_mps(ep, ep->epnum, ep->ep.maxpacket, ep->dir_in); + fotg210_fifo_ep_mapping(ep, ep->epnum, ep->dir_in); + + fotg210->ep[ep->epnum] = ep; + + return 0; +} + +static int fotg210_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct fotg210_ep *ep; + + ep = container_of(_ep, struct fotg210_ep, ep); + + ep->desc = desc; + ep->epnum = usb_endpoint_num(desc); + ep->type = usb_endpoint_type(desc); + ep->dir_in = usb_endpoint_dir_in(desc); + ep->ep.maxpacket = usb_endpoint_maxp(desc); + + return fotg210_config_ep(ep, desc); +} + +static void fotg210_reset_tseq(struct fotg210_udc *fotg210, u8 epnum) +{ + struct fotg210_ep *ep = fotg210->ep[epnum]; + u32 value; + void __iomem *reg; + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(epnum); + + /* Note: Driver needs to set and clear INOUTEPMPSR_RESET_TSEQ + * bit. Controller wouldn't clear this bit. WTF!!! + */ + + value = ioread32(reg); + value |= INOUTEPMPSR_RESET_TSEQ; + iowrite32(value, reg); + + value = ioread32(reg); + value &= ~INOUTEPMPSR_RESET_TSEQ; + iowrite32(value, reg); +} + +static int fotg210_ep_release(struct fotg210_ep *ep) +{ + if (!ep->epnum) + return 0; + ep->epnum = 0; + ep->stall = 0; + ep->wedged = 0; + + fotg210_reset_tseq(ep->fotg210, ep->epnum); + + return 0; +} + +static int fotg210_ep_disable(struct usb_ep *_ep) +{ + struct fotg210_ep *ep; + struct fotg210_request *req; + unsigned long flags; + + BUG_ON(!_ep); + + ep = container_of(_ep, struct fotg210_ep, ep); + + while (!list_empty(&ep->queue)) { + req = list_entry(ep->queue.next, + struct fotg210_request, queue); + spin_lock_irqsave(&ep->fotg210->lock, flags); + fotg210_done(ep, req, -ECONNRESET); + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + } + + return fotg210_ep_release(ep); +} + +static struct usb_request *fotg210_ep_alloc_request(struct usb_ep *_ep, + gfp_t gfp_flags) +{ + struct fotg210_request *req; + + req = kzalloc(sizeof(struct fotg210_request), gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +static void fotg210_ep_free_request(struct usb_ep *_ep, + struct usb_request *_req) +{ + struct fotg210_request *req; + + req = container_of(_req, struct fotg210_request, req); + kfree(req); +} + +static void fotg210_enable_dma(struct fotg210_ep *ep, + dma_addr_t d, u32 len) +{ + u32 value; + struct fotg210_udc *fotg210 = ep->fotg210; + + /* set transfer length and direction */ + value = ioread32(fotg210->reg + FOTG210_DMACPSR1); + value &= ~(DMACPSR1_DMA_LEN(0xFFFF) | DMACPSR1_DMA_TYPE(1)); + value |= DMACPSR1_DMA_LEN(len) | DMACPSR1_DMA_TYPE(ep->dir_in); + iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); + + /* set device DMA target FIFO number */ + value = ioread32(fotg210->reg + FOTG210_DMATFNR); + if (ep->epnum) + value |= DMATFNR_ACC_FN(ep->epnum - 1); + else + value |= DMATFNR_ACC_CXF; + iowrite32(value, fotg210->reg + FOTG210_DMATFNR); + + /* set DMA memory address */ + iowrite32(d, fotg210->reg + FOTG210_DMACPSR2); + + /* enable MDMA_EROR and MDMA_CMPLT interrupt */ + value = ioread32(fotg210->reg + FOTG210_DMISGR2); + value &= ~(DMISGR2_MDMA_CMPLT | DMISGR2_MDMA_ERROR); + iowrite32(value, fotg210->reg + FOTG210_DMISGR2); + + /* start DMA */ + value = ioread32(fotg210->reg + FOTG210_DMACPSR1); + value |= DMACPSR1_DMA_START; + iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); +} + +static void fotg210_disable_dma(struct fotg210_ep *ep) +{ + iowrite32(DMATFNR_DISDMA, ep->fotg210->reg + FOTG210_DMATFNR); +} + +static void fotg210_wait_dma_done(struct fotg210_ep *ep) +{ + u32 value; + + do { + value = ioread32(ep->fotg210->reg + FOTG210_DISGR2); + if ((value & DISGR2_USBRST_INT) || + (value & DISGR2_DMA_ERROR)) + goto dma_reset; + } while (!(value & DISGR2_DMA_CMPLT)); + + value &= ~DISGR2_DMA_CMPLT; + iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2); + return; + +dma_reset: + value = ioread32(ep->fotg210->reg + FOTG210_DMACPSR1); + value |= DMACPSR1_DMA_ABORT; + iowrite32(value, ep->fotg210->reg + FOTG210_DMACPSR1); + + /* reset fifo */ + if (ep->epnum) { + value = ioread32(ep->fotg210->reg + + FOTG210_FIBCR(ep->epnum - 1)); + value |= FIBCR_FFRST; + iowrite32(value, ep->fotg210->reg + + FOTG210_FIBCR(ep->epnum - 1)); + } else { + value = ioread32(ep->fotg210->reg + FOTG210_DCFESR); + value |= DCFESR_CX_CLR; + iowrite32(value, ep->fotg210->reg + FOTG210_DCFESR); + } +} + +static void fotg210_start_dma(struct fotg210_ep *ep, + struct fotg210_request *req) +{ + dma_addr_t d; + u8 *buffer; + u32 length; + + if (ep->epnum) { + if (ep->dir_in) { + buffer = req->req.buf; + length = req->req.length; + } else { + buffer = req->req.buf + req->req.actual; + length = ioread32(ep->fotg210->reg + + FOTG210_FIBCR(ep->epnum - 1)); + length &= FIBCR_BCFX; + } + } else { + buffer = req->req.buf + req->req.actual; + if (req->req.length - req->req.actual > ep->ep.maxpacket) + length = ep->ep.maxpacket; + else + length = req->req.length; + } + + d = dma_map_single(NULL, buffer, length, + ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + if (dma_mapping_error(NULL, d)) { + pr_err("dma_mapping_error\n"); + return; + } + + dma_sync_single_for_device(NULL, d, length, + ep->dir_in ? DMA_TO_DEVICE : + DMA_FROM_DEVICE); + + fotg210_enable_dma(ep, d, length); + + /* check if dma is done */ + fotg210_wait_dma_done(ep); + + fotg210_disable_dma(ep); + + /* update actual transfer length */ + req->req.actual += length; + + dma_unmap_single(NULL, d, length, DMA_TO_DEVICE); +} + +static void fotg210_ep0_queue(struct fotg210_ep *ep, + struct fotg210_request *req) +{ + if (!req->req.length) { + fotg210_done(ep, req, 0); + return; + } + if (ep->dir_in) { /* if IN */ + if (req->req.length) { + fotg210_start_dma(ep, req); + } else { + pr_err("%s : req->req.length = 0x%x\n", + __func__, req->req.length); + } + if ((req->req.length == req->req.actual) || + (req->req.actual < ep->ep.maxpacket)) + fotg210_done(ep, req, 0); + } else { /* OUT */ + if (!req->req.length) { + fotg210_done(ep, req, 0); + } else { + u32 value = ioread32(ep->fotg210->reg + + FOTG210_DMISGR0); + + value &= ~DMISGR0_MCX_OUT_INT; + iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR0); + } + } +} + +static int fotg210_ep_queue(struct usb_ep *_ep, struct usb_request *_req, + gfp_t gfp_flags) +{ + struct fotg210_ep *ep; + struct fotg210_request *req; + unsigned long flags; + int request = 0; + + ep = container_of(_ep, struct fotg210_ep, ep); + req = container_of(_req, struct fotg210_request, req); + + if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + spin_lock_irqsave(&ep->fotg210->lock, flags); + + if (list_empty(&ep->queue)) + request = 1; + + list_add_tail(&req->queue, &ep->queue); + + req->req.actual = 0; + req->req.status = -EINPROGRESS; + + if (!ep->epnum) /* ep0 */ + fotg210_ep0_queue(ep, req); + else if (request && !ep->stall) + fotg210_enable_fifo_int(ep); + + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + + return 0; +} + +static int fotg210_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct fotg210_ep *ep; + struct fotg210_request *req; + unsigned long flags; + + ep = container_of(_ep, struct fotg210_ep, ep); + req = container_of(_req, struct fotg210_request, req); + + spin_lock_irqsave(&ep->fotg210->lock, flags); + if (!list_empty(&ep->queue)) + fotg210_done(ep, req, -ECONNRESET); + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + + return 0; +} + +static void fotg210_set_epnstall(struct fotg210_ep *ep) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 value; + void __iomem *reg; + + /* check if IN FIFO is empty before stall */ + if (ep->dir_in) { + do { + value = ioread32(fotg210->reg + FOTG210_DCFESR); + } while (!(value & DCFESR_FIFO_EMPTY(ep->epnum - 1))); + } + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); + value = ioread32(reg); + value |= INOUTEPMPSR_STL_EP; + iowrite32(value, reg); +} + +static void fotg210_clear_epnstall(struct fotg210_ep *ep) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 value; + void __iomem *reg; + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); + value = ioread32(reg); + value &= ~INOUTEPMPSR_STL_EP; + iowrite32(value, reg); +} + +static int fotg210_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge) +{ + struct fotg210_ep *ep; + struct fotg210_udc *fotg210; + unsigned long flags; + int ret = 0; + + ep = container_of(_ep, struct fotg210_ep, ep); + + fotg210 = ep->fotg210; + + spin_lock_irqsave(&ep->fotg210->lock, flags); + + if (value) { + fotg210_set_epnstall(ep); + ep->stall = 1; + if (wedge) + ep->wedged = 1; + } else { + fotg210_reset_tseq(fotg210, ep->epnum); + fotg210_clear_epnstall(ep); + ep->stall = 0; + ep->wedged = 0; + if (!list_empty(&ep->queue)) + fotg210_enable_fifo_int(ep); + } + + spin_unlock_irqrestore(&ep->fotg210->lock, flags); + return ret; +} + +static int fotg210_ep_set_halt(struct usb_ep *_ep, int value) +{ + return fotg210_set_halt_and_wedge(_ep, value, 0); +} + +static int fotg210_ep_set_wedge(struct usb_ep *_ep) +{ + return fotg210_set_halt_and_wedge(_ep, 1, 1); +} + +static void fotg210_ep_fifo_flush(struct usb_ep *_ep) +{ +} + +static struct usb_ep_ops fotg210_ep_ops = { + .enable = fotg210_ep_enable, + .disable = fotg210_ep_disable, + + .alloc_request = fotg210_ep_alloc_request, + .free_request = fotg210_ep_free_request, + + .queue = fotg210_ep_queue, + .dequeue = fotg210_ep_dequeue, + + .set_halt = fotg210_ep_set_halt, + .fifo_flush = fotg210_ep_fifo_flush, + .set_wedge = fotg210_ep_set_wedge, +}; + +static void fotg210_clear_tx0byte(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_TX0BYTE); + + value &= ~(TX0BYTE_EP1 | TX0BYTE_EP2 | TX0BYTE_EP3 + | TX0BYTE_EP4); + iowrite32(value, fotg210->reg + FOTG210_TX0BYTE); +} + +static void fotg210_clear_rx0byte(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_RX0BYTE); + + value &= ~(RX0BYTE_EP1 | RX0BYTE_EP2 | RX0BYTE_EP3 + | RX0BYTE_EP4); + iowrite32(value, fotg210->reg + FOTG210_RX0BYTE); +} + +/* read 8-byte setup packet only */ +static void fotg210_rdsetupp(struct fotg210_udc *fotg210, + u8 *buffer) +{ + int i = 0; + u8 *tmp = buffer; + u32 data; + u32 length = 8; + + iowrite32(DMATFNR_ACC_CXF, fotg210->reg + FOTG210_DMATFNR); + + for (i = (length >> 2); i > 0; i--) { + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + *(tmp + 1) = (data >> 8) & 0xFF; + *(tmp + 2) = (data >> 16) & 0xFF; + *(tmp + 3) = (data >> 24) & 0xFF; + tmp = tmp + 4; + } + + switch (length % 4) { + case 1: + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + break; + case 2: + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + *(tmp + 1) = (data >> 8) & 0xFF; + break; + case 3: + data = ioread32(fotg210->reg + FOTG210_CXPORT); + *tmp = data & 0xFF; + *(tmp + 1) = (data >> 8) & 0xFF; + *(tmp + 2) = (data >> 16) & 0xFF; + break; + default: + break; + } + + iowrite32(DMATFNR_DISDMA, fotg210->reg + FOTG210_DMATFNR); +} + +static void fotg210_set_configuration(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DAR); + + value |= DAR_AFT_CONF; + iowrite32(value, fotg210->reg + FOTG210_DAR); +} + +static void fotg210_set_dev_addr(struct fotg210_udc *fotg210, u32 addr) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DAR); + + value |= (addr & 0x7F); + iowrite32(value, fotg210->reg + FOTG210_DAR); +} + +static void fotg210_set_cxstall(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); + + value |= DCFESR_CX_STL; + iowrite32(value, fotg210->reg + FOTG210_DCFESR); +} + +static void fotg210_request_error(struct fotg210_udc *fotg210) +{ + fotg210_set_cxstall(fotg210); + pr_err("request error!!\n"); +} + +static void fotg210_set_address(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + if (ctrl->wValue >= 0x0100) { + fotg210_request_error(fotg210); + } else { + fotg210_set_dev_addr(fotg210, ctrl->wValue); + fotg210_set_cxdone(fotg210); + } +} + +static void fotg210_set_feature(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_INTERFACE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_ENDPOINT: { + u8 epnum; + epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; + if (epnum) + fotg210_set_epnstall(fotg210->ep[epnum]); + else + fotg210_set_cxstall(fotg210); + fotg210_set_cxdone(fotg210); + } + break; + default: + fotg210_request_error(fotg210); + break; + } +} + +static void fotg210_clear_feature(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + struct fotg210_ep *ep = + fotg210->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK]; + + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_INTERFACE: + fotg210_set_cxdone(fotg210); + break; + case USB_RECIP_ENDPOINT: + if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) { + if (ep->wedged) { + fotg210_set_cxdone(fotg210); + break; + } + if (ep->stall) + fotg210_set_halt_and_wedge(&ep->ep, 0, 0); + } + fotg210_set_cxdone(fotg210); + break; + default: + fotg210_request_error(fotg210); + break; + } +} + +static int fotg210_is_epnstall(struct fotg210_ep *ep) +{ + struct fotg210_udc *fotg210 = ep->fotg210; + u32 value; + void __iomem *reg; + + reg = (ep->dir_in) ? + fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : + fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); + value = ioread32(reg); + return value & INOUTEPMPSR_STL_EP ? 1 : 0; +} + +static void fotg210_get_status(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + u8 epnum; + + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + fotg210->ep0_data = 1 << USB_DEVICE_SELF_POWERED; + break; + case USB_RECIP_INTERFACE: + fotg210->ep0_data = 0; + break; + case USB_RECIP_ENDPOINT: + epnum = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK; + if (epnum) + fotg210->ep0_data = + fotg210_is_epnstall(fotg210->ep[epnum]) + << USB_ENDPOINT_HALT; + else + fotg210_request_error(fotg210); + break; + + default: + fotg210_request_error(fotg210); + return; /* exit */ + } + + fotg210->ep0_req->buf = &fotg210->ep0_data; + fotg210->ep0_req->length = 2; + + spin_unlock(&fotg210->lock); + fotg210_ep_queue(fotg210->gadget.ep0, fotg210->ep0_req, GFP_KERNEL); + spin_lock(&fotg210->lock); +} + +static int fotg210_setup_packet(struct fotg210_udc *fotg210, + struct usb_ctrlrequest *ctrl) +{ + u8 *p = (u8 *)ctrl; + u8 ret = 0; + + fotg210_rdsetupp(fotg210, p); + + fotg210->ep[0]->dir_in = ctrl->bRequestType & USB_DIR_IN; + + if (fotg210->gadget.speed == USB_SPEED_UNKNOWN) { + u32 value = ioread32(fotg210->reg + FOTG210_DMCR); + fotg210->gadget.speed = value & DMCR_HS_EN ? + USB_SPEED_HIGH : USB_SPEED_FULL; + } + + /* check request */ + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (ctrl->bRequest) { + case USB_REQ_GET_STATUS: + fotg210_get_status(fotg210, ctrl); + break; + case USB_REQ_CLEAR_FEATURE: + fotg210_clear_feature(fotg210, ctrl); + break; + case USB_REQ_SET_FEATURE: + fotg210_set_feature(fotg210, ctrl); + break; + case USB_REQ_SET_ADDRESS: + fotg210_set_address(fotg210, ctrl); + break; + case USB_REQ_SET_CONFIGURATION: + fotg210_set_configuration(fotg210); + ret = 1; + break; + default: + ret = 1; + break; + } + } else { + ret = 1; + } + + return ret; +} + +static void fotg210_ep0out(struct fotg210_udc *fotg210) +{ + struct fotg210_ep *ep = fotg210->ep[0]; + + if (!list_empty(&ep->queue) && !ep->dir_in) { + struct fotg210_request *req; + + req = list_first_entry(&ep->queue, + struct fotg210_request, queue); + + if (req->req.length) + fotg210_start_dma(ep, req); + + if ((req->req.length - req->req.actual) < ep->ep.maxpacket) + fotg210_done(ep, req, 0); + } else { + pr_err("%s : empty queue\n", __func__); + } +} + +static void fotg210_ep0in(struct fotg210_udc *fotg210) +{ + struct fotg210_ep *ep = fotg210->ep[0]; + + if ((!list_empty(&ep->queue)) && (ep->dir_in)) { + struct fotg210_request *req; + + req = list_entry(ep->queue.next, + struct fotg210_request, queue); + + if (req->req.length) + fotg210_start_dma(ep, req); + + if ((req->req.length - req->req.actual) < ep->ep.maxpacket) + fotg210_done(ep, req, 0); + } else { + fotg210_set_cxdone(fotg210); + } +} + +static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210) +{ + u32 value = ioread32(fotg210->reg + FOTG210_DISGR0); + + value &= ~DISGR0_CX_COMABT_INT; + iowrite32(value, fotg210->reg + FOTG210_DISGR0); +} + +static void fotg210_in_fifo_handler(struct fotg210_ep *ep) +{ + struct fotg210_request *req = list_entry(ep->queue.next, + struct fotg210_request, queue); + + if (req->req.length) + fotg210_start_dma(ep, req); + fotg210_done(ep, req, 0); +} + +static void fotg210_out_fifo_handler(struct fotg210_ep *ep) +{ + struct fotg210_request *req = list_entry(ep->queue.next, + struct fotg210_request, queue); + + fotg210_start_dma(ep, req); + + /* finish out transfer */ + if (req->req.length == req->req.actual || + req->req.actual < ep->ep.maxpacket) + fotg210_done(ep, req, 0); +} + +static irqreturn_t fotg210_irq(int irq, void *_fotg210) +{ + struct fotg210_udc *fotg210 = _fotg210; + u32 int_grp = ioread32(fotg210->reg + FOTG210_DIGR); + u32 int_msk = ioread32(fotg210->reg + FOTG210_DMIGR); + + int_grp &= ~int_msk; + + spin_lock(&fotg210->lock); + + if (int_grp & DIGR_INT_G2) { + void __iomem *reg = fotg210->reg + FOTG210_DISGR2; + u32 int_grp2 = ioread32(reg); + u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2); + u32 value; + + int_grp2 &= ~int_msk2; + + if (int_grp2 & DISGR2_USBRST_INT) { + value = ioread32(reg); + value &= ~DISGR2_USBRST_INT; + iowrite32(value, reg); + pr_info("fotg210 udc reset\n"); + } + if (int_grp2 & DISGR2_SUSP_INT) { + value = ioread32(reg); + value &= ~DISGR2_SUSP_INT; + iowrite32(value, reg); + pr_info("fotg210 udc suspend\n"); + } + if (int_grp2 & DISGR2_RESM_INT) { + value = ioread32(reg); + value &= ~DISGR2_RESM_INT; + iowrite32(value, reg); + pr_info("fotg210 udc resume\n"); + } + if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) { + value = ioread32(reg); + value &= ~DISGR2_ISO_SEQ_ERR_INT; + iowrite32(value, reg); + pr_info("fotg210 iso sequence error\n"); + } + if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) { + value = ioread32(reg); + value &= ~DISGR2_ISO_SEQ_ABORT_INT; + iowrite32(value, reg); + pr_info("fotg210 iso sequence abort\n"); + } + if (int_grp2 & DISGR2_TX0BYTE_INT) { + fotg210_clear_tx0byte(fotg210); + value = ioread32(reg); + value &= ~DISGR2_TX0BYTE_INT; + iowrite32(value, reg); + pr_info("fotg210 transferred 0 byte\n"); + } + if (int_grp2 & DISGR2_RX0BYTE_INT) { + fotg210_clear_rx0byte(fotg210); + value = ioread32(reg); + value &= ~DISGR2_RX0BYTE_INT; + iowrite32(value, reg); + pr_info("fotg210 received 0 byte\n"); + } + if (int_grp2 & DISGR2_DMA_ERROR) { + value = ioread32(reg); + value &= ~DISGR2_DMA_ERROR; + iowrite32(value, reg); + } + } + + if (int_grp & DIGR_INT_G0) { + void __iomem *reg = fotg210->reg + FOTG210_DISGR0; + u32 int_grp0 = ioread32(reg); + u32 int_msk0 = ioread32(fotg210->reg + FOTG210_DMISGR0); + struct usb_ctrlrequest ctrl; + + int_grp0 &= ~int_msk0; + + /* the highest priority in this source register */ + if (int_grp0 & DISGR0_CX_COMABT_INT) { + fotg210_clear_comabt_int(fotg210); + pr_info("fotg210 CX command abort\n"); + } + + if (int_grp0 & DISGR0_CX_SETUP_INT) { + if (fotg210_setup_packet(fotg210, &ctrl)) { + spin_unlock(&fotg210->lock); + if (fotg210->driver->setup(&fotg210->gadget, + &ctrl) < 0) + fotg210_set_cxstall(fotg210); + spin_lock(&fotg210->lock); + } + } + if (int_grp0 & DISGR0_CX_COMEND_INT) + pr_info("fotg210 cmd end\n"); + + if (int_grp0 & DISGR0_CX_IN_INT) + fotg210_ep0in(fotg210); + + if (int_grp0 & DISGR0_CX_OUT_INT) + fotg210_ep0out(fotg210); + + if (int_grp0 & DISGR0_CX_COMFAIL_INT) { + fotg210_set_cxstall(fotg210); + pr_info("fotg210 ep0 fail\n"); + } + } + + if (int_grp & DIGR_INT_G1) { + void __iomem *reg = fotg210->reg + FOTG210_DISGR1; + u32 int_grp1 = ioread32(reg); + u32 int_msk1 = ioread32(fotg210->reg + FOTG210_DMISGR1); + int fifo; + + int_grp1 &= ~int_msk1; + + for (fifo = 0; fifo < FOTG210_MAX_FIFO_NUM; fifo++) { + if (int_grp1 & DISGR1_IN_INT(fifo)) + fotg210_in_fifo_handler(fotg210->ep[fifo + 1]); + + if ((int_grp1 & DISGR1_OUT_INT(fifo)) || + (int_grp1 & DISGR1_SPK_INT(fifo))) + fotg210_out_fifo_handler(fotg210->ep[fifo + 1]); + } + } + + spin_unlock(&fotg210->lock); + + return IRQ_HANDLED; +} + +static void fotg210_disable_unplug(struct fotg210_udc *fotg210) +{ + u32 reg = ioread32(fotg210->reg + FOTG210_PHYTMSR); + + reg &= ~PHYTMSR_UNPLUG; + iowrite32(reg, fotg210->reg + FOTG210_PHYTMSR); +} + +static int fotg210_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct fotg210_udc *fotg210 = gadget_to_fotg210(g); + u32 value; + + /* hook up the driver */ + driver->driver.bus = NULL; + fotg210->driver = driver; + + /* enable device global interrupt */ + value = ioread32(fotg210->reg + FOTG210_DMCR); + value |= DMCR_GLINT_EN; + iowrite32(value, fotg210->reg + FOTG210_DMCR); + + return 0; +} + +static void fotg210_init(struct fotg210_udc *fotg210) +{ + u32 value; + + /* disable global interrupt and set int polarity to active high */ + iowrite32(GMIR_MHC_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY, + fotg210->reg + FOTG210_GMIR); + + /* disable device global interrupt */ + value = ioread32(fotg210->reg + FOTG210_DMCR); + value &= ~DMCR_GLINT_EN; + iowrite32(value, fotg210->reg + FOTG210_DMCR); + + /* disable all fifo interrupt */ + iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1); + + /* disable cmd end */ + value = ioread32(fotg210->reg + FOTG210_DMISGR0); + value |= DMISGR0_MCX_COMEND; + iowrite32(value, fotg210->reg + FOTG210_DMISGR0); +} + +static int fotg210_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct fotg210_udc *fotg210 = gadget_to_fotg210(g); + unsigned long flags; + + spin_lock_irqsave(&fotg210->lock, flags); + + fotg210_init(fotg210); + fotg210->driver = NULL; + + spin_unlock_irqrestore(&fotg210->lock, flags); + + return 0; +} + +static struct usb_gadget_ops fotg210_gadget_ops = { + .udc_start = fotg210_udc_start, + .udc_stop = fotg210_udc_stop, +}; + +static int fotg210_udc_remove(struct platform_device *pdev) +{ + struct fotg210_udc *fotg210 = platform_get_drvdata(pdev); + + usb_del_gadget_udc(&fotg210->gadget); + iounmap(fotg210->reg); + free_irq(platform_get_irq(pdev, 0), fotg210); + + fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); + kfree(fotg210); + + return 0; +} + +static int fotg210_udc_probe(struct platform_device *pdev) +{ + struct resource *res, *ires; + struct fotg210_udc *fotg210 = NULL; + struct fotg210_ep *_ep[FOTG210_MAX_NUM_EP]; + int ret = 0; + int i; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + pr_err("platform_get_resource error.\n"); + return -ENODEV; + } + + ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!ires) { + pr_err("platform_get_resource IORESOURCE_IRQ error.\n"); + return -ENODEV; + } + + ret = -ENOMEM; + + /* initialize udc */ + fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL); + if (fotg210 == NULL) + goto err_alloc; + + for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { + _ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL); + if (_ep[i] == NULL) + goto err_alloc; + fotg210->ep[i] = _ep[i]; + } + + fotg210->reg = ioremap(res->start, resource_size(res)); + if (fotg210->reg == NULL) { + pr_err("ioremap error.\n"); + goto err_map; + } + + spin_lock_init(&fotg210->lock); + + platform_set_drvdata(pdev, fotg210); + + fotg210->gadget.ops = &fotg210_gadget_ops; + + fotg210->gadget.max_speed = USB_SPEED_HIGH; + fotg210->gadget.dev.parent = &pdev->dev; + fotg210->gadget.dev.dma_mask = pdev->dev.dma_mask; + fotg210->gadget.name = udc_name; + + INIT_LIST_HEAD(&fotg210->gadget.ep_list); + + for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { + struct fotg210_ep *ep = fotg210->ep[i]; + + if (i) { + INIT_LIST_HEAD(&fotg210->ep[i]->ep.ep_list); + list_add_tail(&fotg210->ep[i]->ep.ep_list, + &fotg210->gadget.ep_list); + } + ep->fotg210 = fotg210; + INIT_LIST_HEAD(&ep->queue); + ep->ep.name = fotg210_ep_name[i]; + ep->ep.ops = &fotg210_ep_ops; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); + } + usb_ep_set_maxpacket_limit(&fotg210->ep[0]->ep, 0x40); + fotg210->gadget.ep0 = &fotg210->ep[0]->ep; + INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list); + + fotg210->ep0_req = fotg210_ep_alloc_request(&fotg210->ep[0]->ep, + GFP_KERNEL); + if (fotg210->ep0_req == NULL) + goto err_req; + + fotg210_init(fotg210); + + fotg210_disable_unplug(fotg210); + + ret = request_irq(ires->start, fotg210_irq, IRQF_SHARED, + udc_name, fotg210); + if (ret < 0) { + pr_err("request_irq error (%d)\n", ret); + goto err_irq; + } + + ret = usb_add_gadget_udc(&pdev->dev, &fotg210->gadget); + if (ret) + goto err_add_udc; + + dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); + + return 0; + +err_add_udc: +err_irq: + free_irq(ires->start, fotg210); + +err_req: + fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); + +err_map: + if (fotg210->reg) + iounmap(fotg210->reg); + +err_alloc: + kfree(fotg210); + + return ret; +} + +static struct platform_driver fotg210_driver = { + .driver = { + .name = (char *)udc_name, + .owner = THIS_MODULE, + }, + .probe = fotg210_udc_probe, + .remove = fotg210_udc_remove, +}; + +module_platform_driver(fotg210_driver); + +MODULE_AUTHOR("Yuan-Hsin Chen, Feng-Hsin Chiang <john453@faraday-tech.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/usb/gadget/fotg210.h b/drivers/usb/gadget/fotg210.h new file mode 100644 index 00000000000..bbf991bcbe7 --- /dev/null +++ b/drivers/usb/gadget/fotg210.h @@ -0,0 +1,253 @@ +/* + * Faraday FOTG210 USB OTG controller + * + * Copyright (C) 2013 Faraday Technology Corporation + * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> + +#define FOTG210_MAX_NUM_EP 5 /* ep0...ep4 */ +#define FOTG210_MAX_FIFO_NUM 4 /* fifo0...fifo4 */ + +/* Global Mask of HC/OTG/DEV interrupt Register(0xC4) */ +#define FOTG210_GMIR 0xC4 +#define GMIR_INT_POLARITY 0x8 /*Active High*/ +#define GMIR_MHC_INT 0x4 +#define GMIR_MOTG_INT 0x2 +#define GMIR_MDEV_INT 0x1 + +/* Device Main Control Register(0x100) */ +#define FOTG210_DMCR 0x100 +#define DMCR_HS_EN (1 << 6) +#define DMCR_CHIP_EN (1 << 5) +#define DMCR_SFRST (1 << 4) +#define DMCR_GOSUSP (1 << 3) +#define DMCR_GLINT_EN (1 << 2) +#define DMCR_HALF_SPEED (1 << 1) +#define DMCR_CAP_RMWAKUP (1 << 0) + +/* Device Address Register(0x104) */ +#define FOTG210_DAR 0x104 +#define DAR_AFT_CONF (1 << 7) + +/* Device Test Register(0x108) */ +#define FOTG210_DTR 0x108 +#define DTR_TST_CLRFF (1 << 0) + +/* PHY Test Mode Selector register(0x114) */ +#define FOTG210_PHYTMSR 0x114 +#define PHYTMSR_TST_PKT (1 << 4) +#define PHYTMSR_TST_SE0NAK (1 << 3) +#define PHYTMSR_TST_KSTA (1 << 2) +#define PHYTMSR_TST_JSTA (1 << 1) +#define PHYTMSR_UNPLUG (1 << 0) + +/* Cx configuration and FIFO Empty Status register(0x120) */ +#define FOTG210_DCFESR 0x120 +#define DCFESR_FIFO_EMPTY(fifo) (1 << 8 << (fifo)) +#define DCFESR_CX_EMP (1 << 5) +#define DCFESR_CX_CLR (1 << 3) +#define DCFESR_CX_STL (1 << 2) +#define DCFESR_TST_PKDONE (1 << 1) +#define DCFESR_CX_DONE (1 << 0) + +/* Device IDLE Counter Register(0x124) */ +#define FOTG210_DICR 0x124 + +/* Device Mask of Interrupt Group Register (0x130) */ +#define FOTG210_DMIGR 0x130 +#define DMIGR_MINT_G0 (1 << 0) + +/* Device Mask of Interrupt Source Group 0(0x134) */ +#define FOTG210_DMISGR0 0x134 +#define DMISGR0_MCX_COMEND (1 << 3) +#define DMISGR0_MCX_OUT_INT (1 << 2) +#define DMISGR0_MCX_IN_INT (1 << 1) +#define DMISGR0_MCX_SETUP_INT (1 << 0) + +/* Device Mask of Interrupt Source Group 1 Register(0x138)*/ +#define FOTG210_DMISGR1 0x138 +#define DMISGR1_MF3_IN_INT (1 << 19) +#define DMISGR1_MF2_IN_INT (1 << 18) +#define DMISGR1_MF1_IN_INT (1 << 17) +#define DMISGR1_MF0_IN_INT (1 << 16) +#define DMISGR1_MF_IN_INT(fifo) (1 << (16 + (fifo))) +#define DMISGR1_MF3_SPK_INT (1 << 7) +#define DMISGR1_MF3_OUT_INT (1 << 6) +#define DMISGR1_MF2_SPK_INT (1 << 5) +#define DMISGR1_MF2_OUT_INT (1 << 4) +#define DMISGR1_MF1_SPK_INT (1 << 3) +#define DMISGR1_MF1_OUT_INT (1 << 2) +#define DMISGR1_MF0_SPK_INT (1 << 1) +#define DMISGR1_MF0_OUT_INT (1 << 0) +#define DMISGR1_MF_OUTSPK_INT(fifo) (0x3 << (fifo) * 2) + +/* Device Mask of Interrupt Source Group 2 Register (0x13C) */ +#define FOTG210_DMISGR2 0x13C +#define DMISGR2_MDMA_ERROR (1 << 8) +#define DMISGR2_MDMA_CMPLT (1 << 7) + +/* Device Interrupt group Register (0x140) */ +#define FOTG210_DIGR 0x140 +#define DIGR_INT_G2 (1 << 2) +#define DIGR_INT_G1 (1 << 1) +#define DIGR_INT_G0 (1 << 0) + +/* Device Interrupt Source Group 0 Register (0x144) */ +#define FOTG210_DISGR0 0x144 +#define DISGR0_CX_COMABT_INT (1 << 5) +#define DISGR0_CX_COMFAIL_INT (1 << 4) +#define DISGR0_CX_COMEND_INT (1 << 3) +#define DISGR0_CX_OUT_INT (1 << 2) +#define DISGR0_CX_IN_INT (1 << 1) +#define DISGR0_CX_SETUP_INT (1 << 0) + +/* Device Interrupt Source Group 1 Register (0x148) */ +#define FOTG210_DISGR1 0x148 +#define DISGR1_OUT_INT(fifo) (1 << ((fifo) * 2)) +#define DISGR1_SPK_INT(fifo) (1 << 1 << ((fifo) * 2)) +#define DISGR1_IN_INT(fifo) (1 << 16 << (fifo)) + +/* Device Interrupt Source Group 2 Register (0x14C) */ +#define FOTG210_DISGR2 0x14C +#define DISGR2_DMA_ERROR (1 << 8) +#define DISGR2_DMA_CMPLT (1 << 7) +#define DISGR2_RX0BYTE_INT (1 << 6) +#define DISGR2_TX0BYTE_INT (1 << 5) +#define DISGR2_ISO_SEQ_ABORT_INT (1 << 4) +#define DISGR2_ISO_SEQ_ERR_INT (1 << 3) +#define DISGR2_RESM_INT (1 << 2) +#define DISGR2_SUSP_INT (1 << 1) +#define DISGR2_USBRST_INT (1 << 0) + +/* Device Receive Zero-Length Data Packet Register (0x150)*/ +#define FOTG210_RX0BYTE 0x150 +#define RX0BYTE_EP8 (1 << 7) +#define RX0BYTE_EP7 (1 << 6) +#define RX0BYTE_EP6 (1 << 5) +#define RX0BYTE_EP5 (1 << 4) +#define RX0BYTE_EP4 (1 << 3) +#define RX0BYTE_EP3 (1 << 2) +#define RX0BYTE_EP2 (1 << 1) +#define RX0BYTE_EP1 (1 << 0) + +/* Device Transfer Zero-Length Data Packet Register (0x154)*/ +#define FOTG210_TX0BYTE 0x154 +#define TX0BYTE_EP8 (1 << 7) +#define TX0BYTE_EP7 (1 << 6) +#define TX0BYTE_EP6 (1 << 5) +#define TX0BYTE_EP5 (1 << 4) +#define TX0BYTE_EP4 (1 << 3) +#define TX0BYTE_EP3 (1 << 2) +#define TX0BYTE_EP2 (1 << 1) +#define TX0BYTE_EP1 (1 << 0) + +/* Device IN Endpoint x MaxPacketSize Register(0x160+4*(x-1)) */ +#define FOTG210_INEPMPSR(ep) (0x160 + 4 * ((ep) - 1)) +#define INOUTEPMPSR_MPS(mps) ((mps) & 0x2FF) +#define INOUTEPMPSR_STL_EP (1 << 11) +#define INOUTEPMPSR_RESET_TSEQ (1 << 12) + +/* Device OUT Endpoint x MaxPacketSize Register(0x180+4*(x-1)) */ +#define FOTG210_OUTEPMPSR(ep) (0x180 + 4 * ((ep) - 1)) + +/* Device Endpoint 1~4 Map Register (0x1A0) */ +#define FOTG210_EPMAP 0x1A0 +#define EPMAP_FIFONO(ep, dir) \ + ((((ep) - 1) << ((ep) - 1) * 8) << ((dir) ? 0 : 4)) +#define EPMAP_FIFONOMSK(ep, dir) \ + ((3 << ((ep) - 1) * 8) << ((dir) ? 0 : 4)) + +/* Device FIFO Map Register (0x1A8) */ +#define FOTG210_FIFOMAP 0x1A8 +#define FIFOMAP_DIROUT(fifo) (0x0 << 4 << (fifo) * 8) +#define FIFOMAP_DIRIN(fifo) (0x1 << 4 << (fifo) * 8) +#define FIFOMAP_BIDIR(fifo) (0x2 << 4 << (fifo) * 8) +#define FIFOMAP_NA(fifo) (0x3 << 4 << (fifo) * 8) +#define FIFOMAP_EPNO(ep) ((ep) << ((ep) - 1) * 8) +#define FIFOMAP_EPNOMSK(ep) (0xF << ((ep) - 1) * 8) + +/* Device FIFO Confuguration Register (0x1AC) */ +#define FOTG210_FIFOCF 0x1AC +#define FIFOCF_TYPE(type, fifo) ((type) << (fifo) * 8) +#define FIFOCF_BLK_SIN(fifo) (0x0 << (fifo) * 8 << 2) +#define FIFOCF_BLK_DUB(fifo) (0x1 << (fifo) * 8 << 2) +#define FIFOCF_BLK_TRI(fifo) (0x2 << (fifo) * 8 << 2) +#define FIFOCF_BLKSZ_512(fifo) (0x0 << (fifo) * 8 << 4) +#define FIFOCF_BLKSZ_1024(fifo) (0x1 << (fifo) * 8 << 4) +#define FIFOCF_FIFO_EN(fifo) (0x1 << (fifo) * 8 << 5) + +/* Device FIFO n Instruction and Byte Count Register (0x1B0+4*n) */ +#define FOTG210_FIBCR(fifo) (0x1B0 + (fifo) * 4) +#define FIBCR_BCFX 0x7FF +#define FIBCR_FFRST (1 << 12) + +/* Device DMA Target FIFO Number Register (0x1C0) */ +#define FOTG210_DMATFNR 0x1C0 +#define DMATFNR_ACC_CXF (1 << 4) +#define DMATFNR_ACC_F3 (1 << 3) +#define DMATFNR_ACC_F2 (1 << 2) +#define DMATFNR_ACC_F1 (1 << 1) +#define DMATFNR_ACC_F0 (1 << 0) +#define DMATFNR_ACC_FN(fifo) (1 << (fifo)) +#define DMATFNR_DISDMA 0 + +/* Device DMA Controller Parameter setting 1 Register (0x1C8) */ +#define FOTG210_DMACPSR1 0x1C8 +#define DMACPSR1_DMA_LEN(len) (((len) & 0xFFFF) << 8) +#define DMACPSR1_DMA_ABORT (1 << 3) +#define DMACPSR1_DMA_TYPE(dir_in) (((dir_in) ? 1 : 0) << 1) +#define DMACPSR1_DMA_START (1 << 0) + +/* Device DMA Controller Parameter setting 2 Register (0x1CC) */ +#define FOTG210_DMACPSR2 0x1CC + +/* Device DMA Controller Parameter setting 3 Register (0x1CC) */ +#define FOTG210_CXPORT 0x1D0 + +struct fotg210_request { + struct usb_request req; + struct list_head queue; +}; + +struct fotg210_ep { + struct usb_ep ep; + struct fotg210_udc *fotg210; + + struct list_head queue; + unsigned stall:1; + unsigned wedged:1; + unsigned use_dma:1; + + unsigned char epnum; + unsigned char type; + unsigned char dir_in; + unsigned int maxp; + const struct usb_endpoint_descriptor *desc; +}; + +struct fotg210_udc { + spinlock_t lock; /* protect the struct */ + void __iomem *reg; + + unsigned long irq_trigger; + + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + + struct fotg210_ep *ep[FOTG210_MAX_NUM_EP]; + + struct usb_request *ep0_req; /* for internal request */ + __le16 ep0_data; + u8 ep0_dir; /* 0/0x80 out/in */ + + u8 reenum; /* if re-enumeration */ +}; + +#define gadget_to_fotg210(g) container_of((g), struct fotg210_udc, gadget) diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c index dcbc0a2e48d..9b140fc4d3b 100644 --- a/drivers/usb/gadget/fsl_mxc_udc.c +++ b/drivers/usb/gadget/fsl_mxc_udc.c @@ -18,13 +18,13 @@ #include <linux/platform_device.h> #include <linux/io.h> -#include <mach/hardware.h> - static struct clk *mxc_ahb_clk; -static struct clk *mxc_usb_clk; +static struct clk *mxc_per_clk; +static struct clk *mxc_ipg_clk; /* workaround ENGcm09152 for i.MX35 */ -#define USBPHYCTRL_OTGBASE_OFFSET 0x608 +#define MX35_USBPHYCTRL_OFFSET 0x600 +#define USBPHYCTRL_OTGBASE_OFFSET 0x8 #define USBPHYCTRL_EVDO (1 << 23) int fsl_udc_clk_init(struct platform_device *pdev) @@ -33,30 +33,33 @@ int fsl_udc_clk_init(struct platform_device *pdev) unsigned long freq; int ret; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); - if (!cpu_is_mx35() && !cpu_is_mx25()) { - mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); - if (IS_ERR(mxc_ahb_clk)) - return PTR_ERR(mxc_ahb_clk); + mxc_ipg_clk = devm_clk_get(&pdev->dev, "ipg"); + if (IS_ERR(mxc_ipg_clk)) { + dev_err(&pdev->dev, "clk_get(\"ipg\") failed\n"); + return PTR_ERR(mxc_ipg_clk); + } - ret = clk_enable(mxc_ahb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n"); - goto eenahb; - } + mxc_ahb_clk = devm_clk_get(&pdev->dev, "ahb"); + if (IS_ERR(mxc_ahb_clk)) { + dev_err(&pdev->dev, "clk_get(\"ahb\") failed\n"); + return PTR_ERR(mxc_ahb_clk); } - /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ - mxc_usb_clk = clk_get(&pdev->dev, "usb"); - if (IS_ERR(mxc_usb_clk)) { - dev_err(&pdev->dev, "clk_get(\"usb\") failed\n"); - ret = PTR_ERR(mxc_usb_clk); - goto egusb; + mxc_per_clk = devm_clk_get(&pdev->dev, "per"); + if (IS_ERR(mxc_per_clk)) { + dev_err(&pdev->dev, "clk_get(\"per\") failed\n"); + return PTR_ERR(mxc_per_clk); } - if (!cpu_is_mx51()) { - freq = clk_get_rate(mxc_usb_clk); + clk_prepare_enable(mxc_ipg_clk); + clk_prepare_enable(mxc_ahb_clk); + clk_prepare_enable(mxc_per_clk); + + /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ + if (!strcmp(pdev->id_entry->name, "imx-udc-mx27")) { + freq = clk_get_rate(mxc_per_clk); if (pdata->phy_mode != FSL_USB2_PHY_ULPI && (freq < 59999000 || freq > 60001000)) { dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq); @@ -65,59 +68,56 @@ int fsl_udc_clk_init(struct platform_device *pdev) } } - ret = clk_enable(mxc_usb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n"); - goto eenusb; - } - return 0; -eenusb: eclkrate: - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; -egusb: - if (!cpu_is_mx35()) - clk_disable(mxc_ahb_clk); -eenahb: - if (!cpu_is_mx35()) - clk_put(mxc_ahb_clk); + clk_disable_unprepare(mxc_ipg_clk); + clk_disable_unprepare(mxc_ahb_clk); + clk_disable_unprepare(mxc_per_clk); + mxc_per_clk = NULL; return ret; } -void fsl_udc_clk_finalize(struct platform_device *pdev) +int fsl_udc_clk_finalize(struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - if (cpu_is_mx35()) { - unsigned int v; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); + int ret = 0; - /* workaround ENGcm09152 for i.MX35 */ - if (pdata->workaround & FLS_USB2_WORKAROUND_ENGCM09152) { - v = readl(MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + - USBPHYCTRL_OTGBASE_OFFSET)); - writel(v | USBPHYCTRL_EVDO, - MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + - USBPHYCTRL_OTGBASE_OFFSET)); + /* workaround ENGcm09152 for i.MX35 */ + if (pdata->workaround & FLS_USB2_WORKAROUND_ENGCM09152) { + unsigned int v; + struct resource *res = platform_get_resource + (pdev, IORESOURCE_MEM, 0); + void __iomem *phy_regs = ioremap(res->start + + MX35_USBPHYCTRL_OFFSET, 512); + if (!phy_regs) { + dev_err(&pdev->dev, "ioremap for phy address fails\n"); + ret = -EINVAL; + goto ioremap_err; } + + v = readl(phy_regs + USBPHYCTRL_OTGBASE_OFFSET); + writel(v | USBPHYCTRL_EVDO, + phy_regs + USBPHYCTRL_OTGBASE_OFFSET); + + iounmap(phy_regs); } + +ioremap_err: /* ULPI transceivers don't need usbpll */ if (pdata->phy_mode == FSL_USB2_PHY_ULPI) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; + clk_disable_unprepare(mxc_per_clk); + mxc_per_clk = NULL; } + + return ret; } void fsl_udc_clk_release(void) { - if (mxc_usb_clk) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - } - if (!cpu_is_mx35()) { - clk_disable(mxc_ahb_clk); - clk_put(mxc_ahb_clk); - } + if (mxc_per_clk) + clk_disable_unprepare(mxc_per_clk); + clk_disable_unprepare(mxc_ahb_clk); + clk_disable_unprepare(mxc_ipg_clk); } diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c index b95697c03d0..ad548333516 100644 --- a/drivers/usb/gadget/fsl_qe_udc.c +++ b/drivers/usb/gadget/fsl_qe_udc.c @@ -22,7 +22,6 @@ #include <linux/module.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/ioport.h> #include <linux/types.h> #include <linux/errno.h> @@ -33,6 +32,7 @@ #include <linux/io.h> #include <linux/moduleparam.h> #include <linux/of_address.h> +#include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/dma-mapping.h> #include <linux/usb/ch9.h> @@ -71,9 +71,6 @@ static struct usb_endpoint_descriptor qe_ep0_desc = { .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD, }; -/* it is initialized in probe() */ -static struct qe_udc *udc_controller; - /******************************************************************** * Internal Used Function Start ********************************************************************/ @@ -188,8 +185,8 @@ static int qe_ep0_stall(struct qe_udc *udc) { qe_eptx_stall_change(&udc->eps[0], 1); qe_eprx_stall_change(&udc->eps[0], 1); - udc_controller->ep0_state = WAIT_FOR_SETUP; - udc_controller->ep0_dir = 0; + udc->ep0_state = WAIT_FOR_SETUP; + udc->ep0_dir = 0; return 0; } @@ -450,13 +447,13 @@ static int qe_ep_rxbd_update(struct qe_ep *ep) ep->rxbuf_d = virt_to_phys((void *)ep->rxbuffer); if (ep->rxbuf_d == DMA_ADDR_INVALID) { - ep->rxbuf_d = dma_map_single(udc_controller->gadget.dev.parent, + ep->rxbuf_d = dma_map_single(ep->udc->gadget.dev.parent, ep->rxbuffer, size, DMA_FROM_DEVICE); ep->rxbufmap = 1; } else { - dma_sync_single_for_device(udc_controller->gadget.dev.parent, + dma_sync_single_for_device(ep->udc->gadget.dev.parent, ep->rxbuf_d, size, DMA_FROM_DEVICE); ep->rxbufmap = 0; @@ -489,10 +486,10 @@ static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num) epparam = udc->ep_param[pipe_num]; usep = 0; - logepnum = (ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + logepnum = (ep->ep.desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); usep |= (logepnum << USB_EPNUM_SHIFT); - switch (ep->desc->bmAttributes & 0x03) { + switch (ep->ep.desc->bmAttributes & 0x03) { case USB_ENDPOINT_XFER_BULK: usep |= USB_TRANS_BULK; break; @@ -644,7 +641,7 @@ static int qe_ep_init(struct qe_udc *udc, /* initialize ep structure */ ep->ep.maxpacket = max; ep->tm = (u8)(desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); - ep->desc = desc; + ep->ep.desc = desc; ep->stopped = 0; ep->init = 1; @@ -698,14 +695,14 @@ en_done: return -ENODEV; } -static inline void qe_usb_enable(void) +static inline void qe_usb_enable(struct qe_udc *udc) { - setbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN); + setbits8(&udc->usb_regs->usb_usmod, USB_MODE_EN); } -static inline void qe_usb_disable(void) +static inline void qe_usb_disable(struct qe_udc *udc) { - clrbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN); + clrbits8(&udc->usb_regs->usb_usmod, USB_MODE_EN); } /*----------------------------------------------------------------------------* @@ -1599,7 +1596,7 @@ static int qe_ep_enable(struct usb_ep *_ep, ep = container_of(_ep, struct qe_ep, ep); /* catch various bogus parameters */ - if (!_ep || !desc || ep->desc || _ep->name == ep_name[0] || + if (!_ep || !desc || _ep->name == ep_name[0] || (desc->bDescriptorType != USB_DT_ENDPOINT)) return -EINVAL; @@ -1629,7 +1626,7 @@ static int qe_ep_disable(struct usb_ep *_ep) ep = container_of(_ep, struct qe_ep, ep); udc = ep->udc; - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { dev_dbg(udc->dev, "%s not enabled\n", _ep ? ep->ep.name : NULL); return -EINVAL; } @@ -1637,7 +1634,7 @@ static int qe_ep_disable(struct usb_ep *_ep) spin_lock_irqsave(&udc->lock, flags); /* Nuke all pending requests (does flush) */ nuke(ep, -ESHUTDOWN); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 1; ep->tx_req = NULL; qe_ep_reset(udc, ep->epnum); @@ -1655,13 +1652,13 @@ static int qe_ep_disable(struct usb_ep *_ep) if (ep->dir != USB_DIR_IN) { kfree(ep->rxframe); if (ep->rxbufmap) { - dma_unmap_single(udc_controller->gadget.dev.parent, + dma_unmap_single(udc->gadget.dev.parent, ep->rxbuf_d, size, DMA_FROM_DEVICE); ep->rxbuf_d = DMA_ADDR_INVALID; } else { dma_sync_single_for_cpu( - udc_controller->gadget.dev.parent, + udc->gadget.dev.parent, ep->rxbuf_d, size, DMA_FROM_DEVICE); } @@ -1714,7 +1711,7 @@ static int __qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req) dev_dbg(udc->dev, "bad params\n"); return -EINVAL; } - if (!_ep || (!ep->desc && ep_index(ep))) { + if (!_ep || (!ep->ep.desc && ep_index(ep))) { dev_dbg(udc->dev, "bad ep\n"); return -EINVAL; } @@ -1825,7 +1822,7 @@ static int qe_ep_set_halt(struct usb_ep *_ep, int value) struct qe_udc *udc; ep = container_of(_ep, struct qe_ep, ep); - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { status = -EINVAL; goto out; } @@ -1879,9 +1876,10 @@ static struct usb_ep_ops qe_ep_ops = { /* Get the current frame number */ static int qe_get_frame(struct usb_gadget *gadget) { + struct qe_udc *udc = container_of(gadget, struct qe_udc, gadget); u16 tmp; - tmp = in_be16(&udc_controller->usb_param->frame_n); + tmp = in_be16(&udc->usb_param->frame_n); if (tmp & 0x8000) tmp = tmp & 0x07ff; else @@ -1890,57 +1888,16 @@ static int qe_get_frame(struct usb_gadget *gadget) return (int)tmp; } -/* Tries to wake up the host connected to this gadget - * - * Return : 0-success - * Negative-this feature not enabled by host or not supported by device hw - */ -static int qe_wakeup(struct usb_gadget *gadget) -{ - return -ENOTSUPP; -} - -/* Notify controller that VBUS is powered, Called by whatever - detects VBUS sessions */ -static int qe_vbus_session(struct usb_gadget *gadget, int is_active) -{ - return -ENOTSUPP; -} - -/* constrain controller's VBUS power usage - * This call is used by gadget drivers during SET_CONFIGURATION calls, - * reporting how much power the device may consume. For example, this - * could affect how quickly batteries are recharged. - * - * Returns zero on success, else negative errno. - */ -static int qe_vbus_draw(struct usb_gadget *gadget, unsigned mA) -{ - return -ENOTSUPP; -} - -/* Change Data+ pullup status - * this func is used by usb_gadget_connect/disconnect - */ -static int qe_pullup(struct usb_gadget *gadget, int is_on) -{ - return -ENOTSUPP; -} - -static int fsl_qe_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int fsl_qe_stop(struct usb_gadget_driver *driver); +static int fsl_qe_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); +static int fsl_qe_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); /* defined in usb_gadget.h */ -static struct usb_gadget_ops qe_gadget_ops = { +static const struct usb_gadget_ops qe_gadget_ops = { .get_frame = qe_get_frame, - .wakeup = qe_wakeup, -/* .set_selfpowered = qe_set_selfpowered,*/ /* always selfpowered */ - .vbus_session = qe_vbus_session, - .vbus_draw = qe_vbus_draw, - .pullup = qe_pullup, - .start = fsl_qe_start, - .stop = fsl_qe_stop, + .udc_start = fsl_qe_start, + .udc_stop = fsl_qe_stop, }; /*------------------------------------------------------------------------- @@ -2014,7 +1971,7 @@ static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value, u16 usep; /* stall if endpoint doesn't exist */ - if (!target_ep->desc) + if (!target_ep->ep.desc) goto stall; usep = in_be16(&udc->usb_regs->usb_usep[pipe]); @@ -2189,7 +2146,7 @@ static int reset_irq(struct qe_udc *udc) if (udc->usb_state == USB_STATE_DEFAULT) return 0; - qe_usb_disable(); + qe_usb_disable(udc); out_8(&udc->usb_regs->usb_usadr, 0); for (i = 0; i < USB_MAX_ENDPOINTS; i++) { @@ -2201,7 +2158,7 @@ static int reset_irq(struct qe_udc *udc) udc->usb_state = USB_STATE_DEFAULT; udc->ep0_state = WAIT_FOR_SETUP; udc->ep0_dir = USB_DIR_OUT; - qe_usb_enable(); + qe_usb_enable(udc); return 0; } @@ -2326,98 +2283,69 @@ static irqreturn_t qe_udc_irq(int irq, void *_udc) /*------------------------------------------------------------------------- Gadget driver probe and unregister. --------------------------------------------------------------------------*/ -static int fsl_qe_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int fsl_qe_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - int retval; - unsigned long flags = 0; - - /* standard operations */ - if (!udc_controller) - return -ENODEV; - - if (!driver || driver->max_speed < USB_SPEED_FULL - || !bind || !driver->disconnect || !driver->setup) - return -EINVAL; - - if (udc_controller->driver) - return -EBUSY; + struct qe_udc *udc; + unsigned long flags; + udc = container_of(gadget, struct qe_udc, gadget); /* lock is needed but whether should use this lock or another */ - spin_lock_irqsave(&udc_controller->lock, flags); + spin_lock_irqsave(&udc->lock, flags); driver->driver.bus = NULL; /* hook up the driver */ - udc_controller->driver = driver; - udc_controller->gadget.dev.driver = &driver->driver; - udc_controller->gadget.speed = driver->max_speed; - spin_unlock_irqrestore(&udc_controller->lock, flags); - - retval = bind(&udc_controller->gadget); - if (retval) { - dev_err(udc_controller->dev, "bind to %s --> %d", - driver->driver.name, retval); - udc_controller->gadget.dev.driver = NULL; - udc_controller->driver = NULL; - return retval; - } + udc->driver = driver; + udc->gadget.speed = driver->max_speed; /* Enable IRQ reg and Set usbcmd reg EN bit */ - qe_usb_enable(); - - out_be16(&udc_controller->usb_regs->usb_usber, 0xffff); - out_be16(&udc_controller->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE); - udc_controller->usb_state = USB_STATE_ATTACHED; - udc_controller->ep0_state = WAIT_FOR_SETUP; - udc_controller->ep0_dir = USB_DIR_OUT; - dev_info(udc_controller->dev, "%s bind to driver %s \n", - udc_controller->gadget.name, driver->driver.name); + qe_usb_enable(udc); + + out_be16(&udc->usb_regs->usb_usber, 0xffff); + out_be16(&udc->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE); + udc->usb_state = USB_STATE_ATTACHED; + udc->ep0_state = WAIT_FOR_SETUP; + udc->ep0_dir = USB_DIR_OUT; + spin_unlock_irqrestore(&udc->lock, flags); + + dev_info(udc->dev, "%s bind to driver %s\n", udc->gadget.name, + driver->driver.name); return 0; } -static int fsl_qe_stop(struct usb_gadget_driver *driver) +static int fsl_qe_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { + struct qe_udc *udc; struct qe_ep *loop_ep; unsigned long flags; - if (!udc_controller) - return -ENODEV; - - if (!driver || driver != udc_controller->driver) - return -EINVAL; - + udc = container_of(gadget, struct qe_udc, gadget); /* stop usb controller, disable intr */ - qe_usb_disable(); + qe_usb_disable(udc); /* in fact, no needed */ - udc_controller->usb_state = USB_STATE_ATTACHED; - udc_controller->ep0_state = WAIT_FOR_SETUP; - udc_controller->ep0_dir = 0; + udc->usb_state = USB_STATE_ATTACHED; + udc->ep0_state = WAIT_FOR_SETUP; + udc->ep0_dir = 0; /* stand operation */ - spin_lock_irqsave(&udc_controller->lock, flags); - udc_controller->gadget.speed = USB_SPEED_UNKNOWN; - nuke(&udc_controller->eps[0], -ESHUTDOWN); - list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list, - ep.ep_list) + spin_lock_irqsave(&udc->lock, flags); + udc->gadget.speed = USB_SPEED_UNKNOWN; + nuke(&udc->eps[0], -ESHUTDOWN); + list_for_each_entry(loop_ep, &udc->gadget.ep_list, ep.ep_list) nuke(loop_ep, -ESHUTDOWN); - spin_unlock_irqrestore(&udc_controller->lock, flags); - - /* report disconnect; the controller is already quiesced */ - driver->disconnect(&udc_controller->gadget); + spin_unlock_irqrestore(&udc->lock, flags); - /* unbind gadget and unhook driver. */ - driver->unbind(&udc_controller->gadget); - udc_controller->gadget.dev.driver = NULL; - udc_controller->driver = NULL; + udc->driver = NULL; - dev_info(udc_controller->dev, "unregistered gadget driver '%s'\r\n", + dev_info(udc->dev, "unregistered gadget driver '%s'\r\n", driver->driver.name); return 0; } /* udc structure's alloc and setup, include ep-param alloc */ -static struct qe_udc __devinit *qe_udc_config(struct platform_device *ofdev) +static struct qe_udc *qe_udc_config(struct platform_device *ofdev) { struct qe_udc *udc; struct device_node *np = ofdev->dev.of_node; @@ -2472,7 +2400,7 @@ cleanup: } /* USB Controller register init */ -static int __devinit qe_udc_reg_init(struct qe_udc *udc) +static int qe_udc_reg_init(struct qe_udc *udc) { struct usb_ctlr __iomem *qe_usbregs; qe_usbregs = udc->usb_regs; @@ -2490,7 +2418,7 @@ static int __devinit qe_udc_reg_init(struct qe_udc *udc) return 0; } -static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) +static int qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) { struct qe_ep *ep = &udc->eps[pipe_num]; @@ -2500,8 +2428,8 @@ static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) ep->ep.ops = &qe_ep_ops; ep->stopped = 1; - ep->ep.maxpacket = (unsigned short) ~0; - ep->desc = NULL; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); + ep->ep.desc = NULL; ep->dir = 0xff; ep->epnum = (u8)pipe_num; ep->sent = 0; @@ -2530,21 +2458,22 @@ static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) *----------------------------------------------------------------------*/ static void qe_udc_release(struct device *dev) { - int i = 0; + struct qe_udc *udc = container_of(dev, struct qe_udc, gadget.dev); + int i; - complete(udc_controller->done); - cpm_muram_free(cpm_muram_offset(udc_controller->ep_param[0])); + complete(udc->done); + cpm_muram_free(cpm_muram_offset(udc->ep_param[0])); for (i = 0; i < USB_MAX_ENDPOINTS; i++) - udc_controller->ep_param[i] = NULL; + udc->ep_param[i] = NULL; - kfree(udc_controller); - udc_controller = NULL; + kfree(udc); } /* Driver probe functions */ static const struct of_device_id qe_udc_match[]; -static int __devinit qe_udc_probe(struct platform_device *ofdev) +static int qe_udc_probe(struct platform_device *ofdev) { + struct qe_udc *udc; const struct of_device_id *match; struct device_node *np = ofdev->dev.of_node; struct qe_ep *ep; @@ -2561,44 +2490,38 @@ static int __devinit qe_udc_probe(struct platform_device *ofdev) return -ENODEV; /* Initialize the udc structure including QH member and other member */ - udc_controller = qe_udc_config(ofdev); - if (!udc_controller) { + udc = qe_udc_config(ofdev); + if (!udc) { dev_err(&ofdev->dev, "failed to initialize\n"); return -ENOMEM; } - udc_controller->soc_type = (unsigned long)match->data; - udc_controller->usb_regs = of_iomap(np, 0); - if (!udc_controller->usb_regs) { + udc->soc_type = (unsigned long)match->data; + udc->usb_regs = of_iomap(np, 0); + if (!udc->usb_regs) { ret = -ENOMEM; goto err1; } /* initialize usb hw reg except for regs for EP, * leave usbintr reg untouched*/ - qe_udc_reg_init(udc_controller); + qe_udc_reg_init(udc); /* here comes the stand operations for probe * set the qe_udc->gadget.xxx */ - udc_controller->gadget.ops = &qe_gadget_ops; + udc->gadget.ops = &qe_gadget_ops; /* gadget.ep0 is a pointer */ - udc_controller->gadget.ep0 = &udc_controller->eps[0].ep; + udc->gadget.ep0 = &udc->eps[0].ep; - INIT_LIST_HEAD(&udc_controller->gadget.ep_list); + INIT_LIST_HEAD(&udc->gadget.ep_list); /* modify in register gadget process */ - udc_controller->gadget.speed = USB_SPEED_UNKNOWN; + udc->gadget.speed = USB_SPEED_UNKNOWN; /* name: Identifies the controller hardware type. */ - udc_controller->gadget.name = driver_name; - - device_initialize(&udc_controller->gadget.dev); - - dev_set_name(&udc_controller->gadget.dev, "gadget"); - - udc_controller->gadget.dev.release = qe_udc_release; - udc_controller->gadget.dev.parent = &ofdev->dev; + udc->gadget.name = driver_name; + udc->gadget.dev.parent = &ofdev->dev; /* initialize qe_ep struct */ for (i = 0; i < USB_MAX_ENDPOINTS ; i++) { @@ -2607,104 +2530,99 @@ static int __devinit qe_udc_probe(struct platform_device *ofdev) /* setup the qe_ep struct and link ep.ep.list * into gadget.ep_list */ - qe_ep_config(udc_controller, (unsigned char)i); + qe_ep_config(udc, (unsigned char)i); } /* ep0 initialization in here */ - ret = qe_ep_init(udc_controller, 0, &qe_ep0_desc); + ret = qe_ep_init(udc, 0, &qe_ep0_desc); if (ret) goto err2; /* create a buf for ZLP send, need to remain zeroed */ - udc_controller->nullbuf = kzalloc(256, GFP_KERNEL); - if (udc_controller->nullbuf == NULL) { - dev_err(udc_controller->dev, "cannot alloc nullbuf\n"); + udc->nullbuf = kzalloc(256, GFP_KERNEL); + if (udc->nullbuf == NULL) { + dev_err(udc->dev, "cannot alloc nullbuf\n"); ret = -ENOMEM; goto err3; } /* buffer for data of get_status request */ - udc_controller->statusbuf = kzalloc(2, GFP_KERNEL); - if (udc_controller->statusbuf == NULL) { + udc->statusbuf = kzalloc(2, GFP_KERNEL); + if (udc->statusbuf == NULL) { ret = -ENOMEM; goto err4; } - udc_controller->nullp = virt_to_phys((void *)udc_controller->nullbuf); - if (udc_controller->nullp == DMA_ADDR_INVALID) { - udc_controller->nullp = dma_map_single( - udc_controller->gadget.dev.parent, - udc_controller->nullbuf, + udc->nullp = virt_to_phys((void *)udc->nullbuf); + if (udc->nullp == DMA_ADDR_INVALID) { + udc->nullp = dma_map_single( + udc->gadget.dev.parent, + udc->nullbuf, 256, DMA_TO_DEVICE); - udc_controller->nullmap = 1; + udc->nullmap = 1; } else { - dma_sync_single_for_device(udc_controller->gadget.dev.parent, - udc_controller->nullp, 256, + dma_sync_single_for_device(udc->gadget.dev.parent, + udc->nullp, 256, DMA_TO_DEVICE); } - tasklet_init(&udc_controller->rx_tasklet, ep_rx_tasklet, - (unsigned long)udc_controller); + tasklet_init(&udc->rx_tasklet, ep_rx_tasklet, + (unsigned long)udc); /* request irq and disable DR */ - udc_controller->usb_irq = irq_of_parse_and_map(np, 0); - if (!udc_controller->usb_irq) { + udc->usb_irq = irq_of_parse_and_map(np, 0); + if (!udc->usb_irq) { ret = -EINVAL; goto err_noirq; } - ret = request_irq(udc_controller->usb_irq, qe_udc_irq, 0, - driver_name, udc_controller); + ret = request_irq(udc->usb_irq, qe_udc_irq, 0, + driver_name, udc); if (ret) { - dev_err(udc_controller->dev, "cannot request irq %d err %d \n", - udc_controller->usb_irq, ret); + dev_err(udc->dev, "cannot request irq %d err %d\n", + udc->usb_irq, ret); goto err5; } - ret = device_add(&udc_controller->gadget.dev); + ret = usb_add_gadget_udc_release(&ofdev->dev, &udc->gadget, + qe_udc_release); if (ret) goto err6; - ret = usb_add_gadget_udc(&ofdev->dev, &udc_controller->gadget); - if (ret) - goto err7; - - dev_info(udc_controller->dev, + platform_set_drvdata(ofdev, udc); + dev_info(udc->dev, "%s USB controller initialized as device\n", - (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM"); + (udc->soc_type == PORT_QE) ? "QE" : "CPM"); return 0; -err7: - device_unregister(&udc_controller->gadget.dev); err6: - free_irq(udc_controller->usb_irq, udc_controller); + free_irq(udc->usb_irq, udc); err5: - irq_dispose_mapping(udc_controller->usb_irq); + irq_dispose_mapping(udc->usb_irq); err_noirq: - if (udc_controller->nullmap) { - dma_unmap_single(udc_controller->gadget.dev.parent, - udc_controller->nullp, 256, + if (udc->nullmap) { + dma_unmap_single(udc->gadget.dev.parent, + udc->nullp, 256, DMA_TO_DEVICE); - udc_controller->nullp = DMA_ADDR_INVALID; + udc->nullp = DMA_ADDR_INVALID; } else { - dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, - udc_controller->nullp, 256, + dma_sync_single_for_cpu(udc->gadget.dev.parent, + udc->nullp, 256, DMA_TO_DEVICE); } - kfree(udc_controller->statusbuf); + kfree(udc->statusbuf); err4: - kfree(udc_controller->nullbuf); + kfree(udc->nullbuf); err3: - ep = &udc_controller->eps[0]; + ep = &udc->eps[0]; cpm_muram_free(cpm_muram_offset(ep->rxbase)); kfree(ep->rxframe); kfree(ep->rxbuffer); kfree(ep->txframe); err2: - iounmap(udc_controller->usb_regs); + iounmap(udc->usb_regs); err1: - kfree(udc_controller); - udc_controller = NULL; + kfree(udc); return ret; } @@ -2720,46 +2638,43 @@ static int qe_udc_resume(struct platform_device *dev) } #endif -static int __devexit qe_udc_remove(struct platform_device *ofdev) +static int qe_udc_remove(struct platform_device *ofdev) { + struct qe_udc *udc = platform_get_drvdata(ofdev); struct qe_ep *ep; unsigned int size; - DECLARE_COMPLETION(done); - if (!udc_controller) - return -ENODEV; + usb_del_gadget_udc(&udc->gadget); - usb_del_gadget_udc(&udc_controller->gadget); + udc->done = &done; + tasklet_disable(&udc->rx_tasklet); - udc_controller->done = &done; - tasklet_disable(&udc_controller->rx_tasklet); - - if (udc_controller->nullmap) { - dma_unmap_single(udc_controller->gadget.dev.parent, - udc_controller->nullp, 256, + if (udc->nullmap) { + dma_unmap_single(udc->gadget.dev.parent, + udc->nullp, 256, DMA_TO_DEVICE); - udc_controller->nullp = DMA_ADDR_INVALID; + udc->nullp = DMA_ADDR_INVALID; } else { - dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, - udc_controller->nullp, 256, + dma_sync_single_for_cpu(udc->gadget.dev.parent, + udc->nullp, 256, DMA_TO_DEVICE); } - kfree(udc_controller->statusbuf); - kfree(udc_controller->nullbuf); + kfree(udc->statusbuf); + kfree(udc->nullbuf); - ep = &udc_controller->eps[0]; + ep = &udc->eps[0]; cpm_muram_free(cpm_muram_offset(ep->rxbase)); size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (USB_BDRING_LEN + 1); kfree(ep->rxframe); if (ep->rxbufmap) { - dma_unmap_single(udc_controller->gadget.dev.parent, + dma_unmap_single(udc->gadget.dev.parent, ep->rxbuf_d, size, DMA_FROM_DEVICE); ep->rxbuf_d = DMA_ADDR_INVALID; } else { - dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, + dma_sync_single_for_cpu(udc->gadget.dev.parent, ep->rxbuf_d, size, DMA_FROM_DEVICE); } @@ -2767,14 +2682,13 @@ static int __devexit qe_udc_remove(struct platform_device *ofdev) kfree(ep->rxbuffer); kfree(ep->txframe); - free_irq(udc_controller->usb_irq, udc_controller); - irq_dispose_mapping(udc_controller->usb_irq); + free_irq(udc->usb_irq, udc); + irq_dispose_mapping(udc->usb_irq); - tasklet_kill(&udc_controller->rx_tasklet); + tasklet_kill(&udc->rx_tasklet); - iounmap(udc_controller->usb_regs); + iounmap(udc->usb_regs); - device_unregister(&udc_controller->gadget.dev); /* wait for release() of gadget.dev to free udc */ wait_for_completion(&done); @@ -2782,7 +2696,7 @@ static int __devexit qe_udc_remove(struct platform_device *ofdev) } /*-------------------------------------------------------------------------*/ -static const struct of_device_id qe_udc_match[] __devinitconst = { +static const struct of_device_id qe_udc_match[] = { { .compatible = "fsl,mpc8323-qe-usb", .data = (void *)PORT_QE, @@ -2802,12 +2716,12 @@ MODULE_DEVICE_TABLE(of, qe_udc_match); static struct platform_driver udc_driver = { .driver = { - .name = (char *)driver_name, + .name = driver_name, .owner = THIS_MODULE, .of_match_table = qe_udc_match, }, .probe = qe_udc_probe, - .remove = __devexit_p(qe_udc_remove), + .remove = qe_udc_remove, #ifdef CONFIG_PM .suspend = qe_udc_suspend, .resume = qe_udc_resume, diff --git a/drivers/usb/gadget/fsl_qe_udc.h b/drivers/usb/gadget/fsl_qe_udc.h index 1da5fb03d21..7026919fc90 100644 --- a/drivers/usb/gadget/fsl_qe_udc.h +++ b/drivers/usb/gadget/fsl_qe_udc.h @@ -153,10 +153,10 @@ struct usb_ep_para{ #define USB_BUSMODE_DTB 0x02 /* Endpoint basic handle */ -#define ep_index(EP) ((EP)->desc->bEndpointAddress & 0xF) +#define ep_index(EP) ((EP)->ep.desc->bEndpointAddress & 0xF) #define ep_maxpacket(EP) ((EP)->ep.maxpacket) #define ep_is_in(EP) ((ep_index(EP) == 0) ? (EP->udc->ep0_dir == \ - USB_DIR_IN) : ((EP)->desc->bEndpointAddress \ + USB_DIR_IN) : ((EP)->ep.desc->bEndpointAddress \ & USB_DIR_IN) == USB_DIR_IN) /* ep0 transfer state */ @@ -266,7 +266,6 @@ struct qe_ep { struct usb_ep ep; struct list_head queue; struct qe_udc *udc; - const struct usb_endpoint_descriptor *desc; struct usb_gadget *gadget; u8 state; diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index b04712f19f1..28e4fc95702 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004-2007,2011 Freescale Semiconductor, Inc. + * Copyright (C) 2004-2007,2011-2012 Freescale Semiconductor, Inc. * All rights reserved. * * Author: Li Yang <leoli@freescale.com> @@ -24,6 +24,7 @@ #include <linux/ioport.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/list.h> @@ -40,10 +41,10 @@ #include <linux/fsl_devices.h> #include <linux/dmapool.h> #include <linux/delay.h> +#include <linux/of_device.h> #include <asm/byteorder.h> #include <asm/io.h> -#include <asm/system.h> #include <asm/unaligned.h> #include <asm/dma.h> @@ -59,9 +60,8 @@ static const char driver_name[] = "fsl-usb2-udc"; static const char driver_desc[] = DRIVER_DESC; static struct usb_dr_device *dr_regs; -#ifndef CONFIG_ARCH_MXC + static struct usb_sys_interface *usb_sys_regs; -#endif /* it is initialized in probe() */ static struct fsl_udc *udc_controller = NULL; @@ -185,20 +185,7 @@ static void done(struct fsl_ep *ep, struct fsl_req *req, int status) dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma); } - if (req->mapped) { - dma_unmap_single(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else - dma_sync_single_for_cpu(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); + usb_gadget_unmap_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); if (status && (status != -ESHUTDOWN)) VDBG("complete %s req %p stat %d len %u/%u", @@ -245,10 +232,9 @@ static int dr_controller_setup(struct fsl_udc *udc) { unsigned int tmp, portctrl, ep_num; unsigned int max_no_of_ep; -#ifndef CONFIG_ARCH_MXC unsigned int ctrl; -#endif unsigned long timeout; + #define FSL_UDC_RESET_TIMEOUT 1000 /* Config PHY interface */ @@ -256,12 +242,32 @@ static int dr_controller_setup(struct fsl_udc *udc) portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); switch (udc->phy_mode) { case FSL_USB2_PHY_ULPI: + if (udc->pdata->have_sysif_regs) { + if (udc->pdata->controller_ver) { + /* controller version 1.6 or above */ + ctrl = __raw_readl(&usb_sys_regs->control); + ctrl &= ~USB_CTRL_UTMI_PHY_EN; + ctrl |= USB_CTRL_USB_EN; + __raw_writel(ctrl, &usb_sys_regs->control); + } + } portctrl |= PORTSCX_PTS_ULPI; break; case FSL_USB2_PHY_UTMI_WIDE: portctrl |= PORTSCX_PTW_16BIT; /* fall through */ case FSL_USB2_PHY_UTMI: + if (udc->pdata->have_sysif_regs) { + if (udc->pdata->controller_ver) { + /* controller version 1.6 or above */ + ctrl = __raw_readl(&usb_sys_regs->control); + ctrl |= (USB_CTRL_UTMI_PHY_EN | + USB_CTRL_USB_EN); + __raw_writel(ctrl, &usb_sys_regs->control); + mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI + PHY CLK to become stable - 10ms*/ + } + } portctrl |= PORTSCX_PTS_UTMI; break; case FSL_USB2_PHY_SERIAL: @@ -550,7 +556,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, ep = container_of(_ep, struct fsl_ep, ep); /* catch various bogus parameters */ - if (!_ep || !desc || ep->desc + if (!_ep || !desc || (desc->bDescriptorType != USB_DT_ENDPOINT)) return -EINVAL; @@ -591,7 +597,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, spin_lock_irqsave(&udc->lock, flags); ep->ep.maxpacket = max; - ep->desc = desc; + ep->ep.desc = desc; ep->stopped = 0; /* Controller related setup */ @@ -615,7 +621,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, retval = 0; VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name, - ep->desc->bEndpointAddress & 0x0f, + ep->ep.desc->bEndpointAddress & 0x0f, (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", max); en_done: @@ -635,7 +641,7 @@ static int fsl_ep_disable(struct usb_ep *_ep) int ep_num; ep = container_of(_ep, struct fsl_ep, ep); - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { VDBG("%s not enabled", _ep ? ep->ep.name : NULL); return -EINVAL; } @@ -658,7 +664,7 @@ static int fsl_ep_disable(struct usb_ep *_ep) /* nuke all pending requests (does flush) */ nuke(ep, -ESHUTDOWN); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 1; spin_unlock_irqrestore(&udc->lock, flags); @@ -730,12 +736,14 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) : (1 << (ep_index(ep))); /* check if the pipe is empty */ - if (!(list_empty(&ep->queue))) { + if (!(list_empty(&ep->queue)) && !(ep_index(ep) == 0)) { /* Add td to the end */ struct fsl_req *lastreq; lastreq = list_entry(ep->queue.prev, struct fsl_req, queue); lastreq->tail->next_td_ptr = cpu_to_hc32(req->head->td_dma & DTD_ADDR_MASK); + /* Ensure dTD's next dtd pointer to be updated */ + wmb(); /* Read prime bit, if 1 goto done */ if (fsl_readl(&dr_regs->endpointprime) & bitmask) return; @@ -768,7 +776,7 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) * @is_last: return flag if it is the last dTD of the request * return: pointer to the built dTD */ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, - dma_addr_t *dma, int *is_last) + dma_addr_t *dma, int *is_last, gfp_t gfp_flags) { u32 swap_temp; struct ep_td_struct *dtd; @@ -777,7 +785,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, *length = min(req->req.length - req->req.actual, (unsigned)EP_MAX_LENGTH_TRANSFER); - dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma); + dtd = dma_pool_alloc(udc_controller->td_pool, gfp_flags, dma); if (dtd == NULL) return dtd; @@ -827,7 +835,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, } /* Generate dtd chain for a request */ -static int fsl_req_to_dtd(struct fsl_req *req) +static int fsl_req_to_dtd(struct fsl_req *req, gfp_t gfp_flags) { unsigned count; int is_last; @@ -836,7 +844,7 @@ static int fsl_req_to_dtd(struct fsl_req *req) dma_addr_t dma; do { - dtd = fsl_build_dtd(req, &count, &dma, &is_last); + dtd = fsl_build_dtd(req, &count, &dma, &is_last, gfp_flags); if (dtd == NULL) return -ENOMEM; @@ -867,6 +875,7 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) struct fsl_req *req = container_of(_req, struct fsl_req, req); struct fsl_udc *udc; unsigned long flags; + int ret; /* catch various bogus parameters */ if (!_req || !req->req.complete || !req->req.buf @@ -874,11 +883,11 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) VDBG("%s, bad params", __func__); return -EINVAL; } - if (unlikely(!_ep || !ep->desc)) { + if (unlikely(!_ep || !ep->ep.desc)) { VDBG("%s, bad ep", __func__); return -EINVAL; } - if (usb_endpoint_xfer_isoc(ep->desc)) { + if (usb_endpoint_xfer_isoc(ep->ep.desc)) { if (req->req.length > ep->ep.maxpacket) return -EMSGSIZE; } @@ -889,41 +898,22 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) req->ep = ep; - /* map virtual address to hardware */ - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, - req->req.buf, - req->req.length, ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 1; - } else { - dma_sync_single_for_device(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 0; - } + ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); + if (ret) + return ret; req->req.status = -EINPROGRESS; req->req.actual = 0; req->dtd_count = 0; - spin_lock_irqsave(&udc->lock, flags); - /* build dtds and push them to device queue */ - if (!fsl_req_to_dtd(req)) { + if (!fsl_req_to_dtd(req, gfp_flags)) { + spin_lock_irqsave(&udc->lock, flags); fsl_queue_td(ep, req); } else { - spin_unlock_irqrestore(&udc->lock, flags); return -ENOMEM; } - /* Update ep0 state */ - if ((ep_index(ep) == 0)) - udc->ep0_state = DATA_STATE_XMIT; - /* irq handler advances the queue */ if (req != NULL) list_add_tail(&req->queue, &ep->queue); @@ -1023,12 +1013,12 @@ static int fsl_ep_set_halt(struct usb_ep *_ep, int value) ep = container_of(_ep, struct fsl_ep, ep); udc = ep->udc; - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { status = -EINVAL; goto out; } - if (usb_endpoint_xfer_isoc(ep->desc)) { + if (usb_endpoint_xfer_isoc(ep->ep.desc)) { status = -EOPNOTSUPP; goto out; } @@ -1067,7 +1057,7 @@ static int fsl_ep_fifo_status(struct usb_ep *_ep) struct ep_queue_head *qh; ep = container_of(_ep, struct fsl_ep, ep); - if (!_ep || (!ep->desc && ep_index(ep) != 0)) + if (!_ep || (!ep->ep.desc && ep_index(ep) != 0)) return -ENODEV; udc = (struct fsl_udc *)ep->udc; @@ -1100,7 +1090,7 @@ static void fsl_ep_fifo_flush(struct usb_ep *_ep) return; } else { ep = container_of(_ep, struct fsl_ep, ep); - if (!ep->desc) + if (!ep->ep.desc) return; } ep_num = ep_index(ep); @@ -1216,8 +1206,8 @@ static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA) struct fsl_udc *udc; udc = container_of(gadget, struct fsl_udc, gadget); - if (udc->transceiver) - return otg_set_power(udc->transceiver, mA); + if (!IS_ERR_OR_NULL(udc->transceiver)) + return usb_phy_set_power(udc->transceiver, mA); return -ENOTSUPP; } @@ -1229,6 +1219,10 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on) struct fsl_udc *udc; udc = container_of(gadget, struct fsl_udc, gadget); + + if (!udc->vbus_active) + return -EOPNOTSUPP; + udc->softconnect = (is_on != 0); if (can_pullup(udc)) fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP), @@ -1240,19 +1234,20 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static int fsl_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int fsl_stop(struct usb_gadget_driver *driver); +static int fsl_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int fsl_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); /* defined in gadget.h */ -static struct usb_gadget_ops fsl_gadget_ops = { +static const struct usb_gadget_ops fsl_gadget_ops = { .get_frame = fsl_get_frame, .wakeup = fsl_wakeup, /* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */ .vbus_session = fsl_vbus_session, .vbus_draw = fsl_vbus_draw, .pullup = fsl_pullup, - .start = fsl_start, - .stop = fsl_stop, + .udc_start = fsl_udc_start, + .udc_stop = fsl_udc_stop, }; /* Set protocol stall on ep0, protocol stall will automatically be cleared @@ -1274,6 +1269,7 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) { struct fsl_req *req = udc->status_req; struct fsl_ep *ep; + int ret; if (direction == EP_DIR_IN) udc->ep0_dir = USB_DIR_IN; @@ -1281,7 +1277,8 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) udc->ep0_dir = USB_DIR_OUT; ep = &udc->eps[0]; - udc->ep0_state = WAIT_FOR_OUT_STATUS; + if (udc->ep0_state != DATA_STATE_XMIT) + udc->ep0_state = WAIT_FOR_OUT_STATUS; req->ep = ep; req->req.length = 0; @@ -1290,12 +1287,11 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) req->req.complete = NULL; req->dtd_count = 0; - req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, - req->req.buf, req->req.length, - ep_is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 1; + ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); + if (ret) + return ret; - if (fsl_req_to_dtd(req) == 0) + if (fsl_req_to_dtd(req, GFP_ATOMIC) == 0) fsl_queue_td(ep, req); else return -ENOMEM; @@ -1336,6 +1332,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, u16 tmp = 0; /* Status, cpu endian */ struct fsl_req *req; struct fsl_ep *ep; + int ret; ep = &udc->eps[0]; @@ -1354,7 +1351,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index)); /* stall if endpoint doesn't exist */ - if (!target_ep->desc) + if (!target_ep->ep.desc) goto stall; tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep)) << USB_ENDPOINT_HALT; @@ -1373,19 +1370,21 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, req->req.complete = NULL; req->dtd_count = 0; - req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, - req->req.buf, req->req.length, - ep_is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 1; + ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); + if (ret) + goto stall; /* prime the data phase */ - if ((fsl_req_to_dtd(req) == 0)) + if ((fsl_req_to_dtd(req, GFP_ATOMIC) == 0)) fsl_queue_td(ep, req); else /* no mem */ goto stall; list_add_tail(&req->queue, &ep->queue); udc->ep0_state = DATA_STATE_XMIT; + if (ep0_prime_status(udc, EP_DIR_OUT)) + ep0stall(udc); + return; stall: ep0stall(udc); @@ -1494,6 +1493,14 @@ static void setup_received_irq(struct fsl_udc *udc, spin_lock(&udc->lock); udc->ep0_state = (setup->bRequestType & USB_DIR_IN) ? DATA_STATE_XMIT : DATA_STATE_RECV; + /* + * If the data stage is IN, send status prime immediately. + * See 2.0 Spec chapter 8.5.3.3 for detail. + */ + if (udc->ep0_state == DATA_STATE_XMIT) + if (ep0_prime_status(udc, EP_DIR_OUT)) + ep0stall(udc); + } else { /* No data phase, IN status from gadget */ udc->ep0_dir = USB_DIR_IN; @@ -1522,9 +1529,8 @@ static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0, switch (udc->ep0_state) { case DATA_STATE_XMIT: - /* receive status phase */ - if (ep0_prime_status(udc, EP_DIR_OUT)) - ep0stall(udc); + /* already primed at setup_received_irq */ + udc->ep0_state = WAIT_FOR_OUT_STATUS; break; case DATA_STATE_RECV: /* send status phase */ @@ -1925,53 +1931,33 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) * Hook to gadget drivers * Called by initialization code of gadget drivers *----------------------------------------------------------------*/ -static int fsl_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int fsl_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - int retval = -ENODEV; + int retval = 0; unsigned long flags = 0; - if (!udc_controller) - return -ENODEV; - - if (!driver || driver->max_speed < USB_SPEED_FULL - || !bind || !driver->disconnect || !driver->setup) - return -EINVAL; - - if (udc_controller->driver) - return -EBUSY; - /* lock is needed but whether should use this lock or another */ spin_lock_irqsave(&udc_controller->lock, flags); driver->driver.bus = NULL; /* hook up the driver */ udc_controller->driver = driver; - udc_controller->gadget.dev.driver = &driver->driver; spin_unlock_irqrestore(&udc_controller->lock, flags); - /* bind udc driver to gadget driver */ - retval = bind(&udc_controller->gadget); - if (retval) { - VDBG("bind to %s --> %d", driver->driver.name, retval); - udc_controller->gadget.dev.driver = NULL; - udc_controller->driver = NULL; - goto out; - } - - if (udc_controller->transceiver) { + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { /* Suspend the controller until OTG enable it */ udc_controller->stopped = 1; printk(KERN_INFO "Suspend udc for OTG auto detect\n"); /* connect to bus through transceiver */ - if (udc_controller->transceiver) { - retval = otg_set_peripheral(udc_controller->transceiver, + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { + retval = otg_set_peripheral( + udc_controller->transceiver->otg, &udc_controller->gadget); if (retval < 0) { ERR("can't bind to transceiver\n"); driver->unbind(&udc_controller->gadget); - udc_controller->gadget.dev.driver = 0; udc_controller->driver = 0; return retval; } @@ -1983,30 +1969,19 @@ static int fsl_start(struct usb_gadget_driver *driver, udc_controller->ep0_state = WAIT_FOR_SETUP; udc_controller->ep0_dir = 0; } - printk(KERN_INFO "%s: bind to driver %s\n", - udc_controller->gadget.name, driver->driver.name); -out: - if (retval) - printk(KERN_WARNING "gadget driver register failed %d\n", - retval); return retval; } /* Disconnect from gadget driver */ -static int fsl_stop(struct usb_gadget_driver *driver) +static int fsl_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { struct fsl_ep *loop_ep; unsigned long flags; - if (!udc_controller) - return -ENODEV; - - if (!driver || driver != udc_controller->driver || !driver->unbind) - return -EINVAL; - - if (udc_controller->transceiver) - otg_set_peripheral(udc_controller->transceiver, NULL); + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) + otg_set_peripheral(udc_controller->transceiver->otg, NULL); /* stop DR, disable intr */ dr_controller_stop(udc_controller); @@ -2025,16 +2000,8 @@ static int fsl_stop(struct usb_gadget_driver *driver) nuke(loop_ep, -ESHUTDOWN); spin_unlock_irqrestore(&udc_controller->lock, flags); - /* report disconnect; the controller is already quiesced */ - driver->disconnect(&udc_controller->gadget); - - /* unbind gadget and unhook driver. */ - driver->unbind(&udc_controller->gadget); - udc_controller->gadget.dev.driver = NULL; udc_controller->driver = NULL; - printk(KERN_WARNING "unregistered gadget driver '%s'\n", - driver->driver.name); return 0; } @@ -2047,47 +2014,37 @@ static int fsl_stop(struct usb_gadget_driver *driver) static const char proc_filename[] = "driver/fsl_usb2_udc"; -static int fsl_proc_read(char *page, char **start, off_t off, int count, - int *eof, void *_dev) +static int fsl_proc_read(struct seq_file *m, void *v) { - char *buf = page; - char *next = buf; - unsigned size = count; unsigned long flags; - int t, i; + int i; u32 tmp_reg; struct fsl_ep *ep = NULL; struct fsl_req *req; struct fsl_udc *udc = udc_controller; - if (off != 0) - return 0; spin_lock_irqsave(&udc->lock, flags); /* ------basic driver information ---- */ - t = scnprintf(next, size, + seq_printf(m, DRIVER_DESC "\n" "%s version: %s\n" "Gadget driver: %s\n\n", driver_name, DRIVER_VERSION, udc->driver ? udc->driver->driver.name : "(none)"); - size -= t; - next += t; /* ------ DR Registers ----- */ tmp_reg = fsl_readl(&dr_regs->usbcmd); - t = scnprintf(next, size, + seq_printf(m, "USBCMD reg:\n" "SetupTW: %d\n" "Run/Stop: %s\n\n", (tmp_reg & USB_CMD_SUTW) ? 1 : 0, (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop"); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->usbsts); - t = scnprintf(next, size, + seq_printf(m, "USB Status Reg:\n" "Dr Suspend: %d Reset Received: %d System Error: %s " "USB Error Interrupt: %s\n\n", @@ -2095,12 +2052,10 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, (tmp_reg & USB_STS_RESET) ? 1 : 0, (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal", (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err"); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->usbintr); - t = scnprintf(next, size, - "USB Intrrupt Enable Reg:\n" + seq_printf(m, + "USB Interrupt Enable Reg:\n" "Sleep Enable: %d SOF Received Enable: %d " "Reset Enable: %d\n" "System Error Enable: %d " @@ -2113,33 +2068,25 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0, (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0, (tmp_reg & USB_INTR_INT_EN) ? 1 : 0); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->frindex); - t = scnprintf(next, size, + seq_printf(m, "USB Frame Index Reg: Frame Number is 0x%x\n\n", (tmp_reg & USB_FRINDEX_MASKS)); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->deviceaddr); - t = scnprintf(next, size, + seq_printf(m, "USB Device Address Reg: Device Addr is 0x%x\n\n", (tmp_reg & USB_DEVICE_ADDRESS_MASK)); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->endpointlistaddr); - t = scnprintf(next, size, + seq_printf(m, "USB Endpoint List Address Reg: " "Device Addr is 0x%x\n\n", (tmp_reg & USB_EP_LIST_ADDRESS_MASK)); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->portsc1); - t = scnprintf(next, size, + seq_printf(m, "USB Port Status&Control Reg:\n" "Port Transceiver Type : %s Port Speed: %s\n" "PHY Low Power Suspend: %s Port Reset: %s " @@ -2148,7 +2095,7 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, "Port Enable/Disable Change: %s\n" "Port Enabled/Disabled: %s " "Current Connect Status: %s\n\n", ( { - char *s; + const char *s; switch (tmp_reg & PORTSCX_PTS_FSLS) { case PORTSCX_PTS_UTMI: s = "UTMI"; break; @@ -2174,13 +2121,11 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, "Not correct", (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ? "Attached" : "Not-Att"); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->usbmode); - t = scnprintf(next, size, + seq_printf(m, "USB Mode Reg: Controller Mode is: %s\n\n", ( { - char *s; + const char *s; switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) { case USB_MODE_CTRL_MODE_IDLE: s = "Idle"; break; @@ -2193,103 +2138,87 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, } s; } )); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->endptsetupstat); - t = scnprintf(next, size, + seq_printf(m, "Endpoint Setup Status Reg: SETUP on ep 0x%x\n\n", (tmp_reg & EP_SETUP_STATUS_MASK)); - size -= t; - next += t; for (i = 0; i < udc->max_ep / 2; i++) { tmp_reg = fsl_readl(&dr_regs->endptctrl[i]); - t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n", - i, tmp_reg); - size -= t; - next += t; + seq_printf(m, "EP Ctrl Reg [0x%x]: = [0x%x]\n", i, tmp_reg); } tmp_reg = fsl_readl(&dr_regs->endpointprime); - t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n\n", tmp_reg); - size -= t; - next += t; + seq_printf(m, "EP Prime Reg = [0x%x]\n\n", tmp_reg); #ifndef CONFIG_ARCH_MXC if (udc->pdata->have_sysif_regs) { tmp_reg = usb_sys_regs->snoop1; - t = scnprintf(next, size, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg); - size -= t; - next += t; + seq_printf(m, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg); tmp_reg = usb_sys_regs->control; - t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n", - tmp_reg); - size -= t; - next += t; + seq_printf(m, "General Control Reg : = [0x%x]\n\n", tmp_reg); } #endif /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */ ep = &udc->eps[0]; - t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n", + seq_printf(m, "For %s Maxpkt is 0x%x index is 0x%x\n", ep->ep.name, ep_maxpacket(ep), ep_index(ep)); - size -= t; - next += t; if (list_empty(&ep->queue)) { - t = scnprintf(next, size, "its req queue is empty\n\n"); - size -= t; - next += t; + seq_puts(m, "its req queue is empty\n\n"); } else { list_for_each_entry(req, &ep->queue, queue) { - t = scnprintf(next, size, + seq_printf(m, "req %p actual 0x%x length 0x%x buf %p\n", &req->req, req->req.actual, req->req.length, req->req.buf); - size -= t; - next += t; } } /* other gadget->eplist ep */ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - if (ep->desc) { - t = scnprintf(next, size, + if (ep->ep.desc) { + seq_printf(m, "\nFor %s Maxpkt is 0x%x " "index is 0x%x\n", ep->ep.name, ep_maxpacket(ep), ep_index(ep)); - size -= t; - next += t; if (list_empty(&ep->queue)) { - t = scnprintf(next, size, - "its req queue is empty\n\n"); - size -= t; - next += t; + seq_puts(m, "its req queue is empty\n\n"); } else { list_for_each_entry(req, &ep->queue, queue) { - t = scnprintf(next, size, + seq_printf(m, "req %p actual 0x%x length " "0x%x buf %p\n", &req->req, req->req.actual, req->req.length, req->req.buf); - size -= t; - next += t; - } /* end for each_entry of ep req */ - } /* end for else */ - } /* end for if(ep->queue) */ - } /* end (ep->desc) */ + } /* end for each_entry of ep req */ + } /* end for else */ + } /* end for if(ep->queue) */ + } /* end (ep->desc) */ spin_unlock_irqrestore(&udc->lock, flags); + return 0; +} - *eof = 1; - return count - size; +/* + * seq_file wrappers for procfile show routines. + */ +static int fsl_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, fsl_proc_read, NULL); } -#define create_proc_file() create_proc_read_entry(proc_filename, \ - 0, NULL, fsl_proc_read, NULL) +static const struct file_operations fsl_proc_fops = { + .open = fsl_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; +#define create_proc_file() proc_create(proc_filename, 0, NULL, &fsl_proc_fops) #define remove_proc_file() remove_proc_entry(proc_filename, NULL) #else /* !CONFIG_USB_GADGET_DEBUG_FILES */ @@ -2323,14 +2252,12 @@ static int __init struct_udc_setup(struct fsl_udc *udc, struct fsl_usb2_platform_data *pdata; size_t size; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc->phy_mode = pdata->phy_mode; udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL); - if (!udc->eps) { - ERR("malloc fsl_ep failed\n"); + if (!udc->eps) return -1; - } /* initialized QHs, take care of alignment */ size = udc->max_ep * sizeof(struct ep_queue_head); @@ -2386,7 +2313,7 @@ static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index, /* for ep0: maxP defined in desc * for other eps, maxP is set by epautoconfig() called by gadget layer */ - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); /* the queue lists any req for this ep */ INIT_LIST_HEAD(&ep->queue); @@ -2412,26 +2339,19 @@ static int __init fsl_udc_probe(struct platform_device *pdev) unsigned int i; u32 dccparams; - if (strcmp(pdev->name, driver_name)) { - VDBG("Wrong device"); - return -ENODEV; - } - udc_controller = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL); - if (udc_controller == NULL) { - ERR("malloc udc failed\n"); + if (udc_controller == NULL) return -ENOMEM; - } - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc_controller->pdata = pdata; spin_lock_init(&udc_controller->lock); udc_controller->stopped = 1; #ifdef CONFIG_USB_OTG if (pdata->operating_mode == FSL_USB2_DR_OTG) { - udc_controller->transceiver = otg_get_transceiver(); - if (!udc_controller->transceiver) { + udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(udc_controller->transceiver)) { ERR("Can't find OTG driver!\n"); ret = -ENODEV; goto err_kfree; @@ -2515,13 +2435,15 @@ static int __init fsl_udc_probe(struct platform_device *pdev) goto err_free_irq; } - if (!udc_controller->transceiver) { + if (IS_ERR_OR_NULL(udc_controller->transceiver)) { /* initialize usb hw reg except for regs for EP, * leave usbintr reg untouched */ dr_controller_setup(udc_controller); } - fsl_udc_clk_finalize(pdev); + ret = fsl_udc_clk_finalize(pdev); + if (ret) + goto err_free_irq; /* Setup gadget structure */ udc_controller->gadget.ops = &fsl_gadget_ops; @@ -2533,13 +2455,9 @@ static int __init fsl_udc_probe(struct platform_device *pdev) /* Setup gadget.dev and register with kernel */ dev_set_name(&udc_controller->gadget.dev, "gadget"); - udc_controller->gadget.dev.release = fsl_udc_release; - udc_controller->gadget.dev.parent = &pdev->dev; - ret = device_register(&udc_controller->gadget.dev); - if (ret < 0) - goto err_free_irq; + udc_controller->gadget.dev.of_node = pdev->dev.of_node; - if (udc_controller->transceiver) + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) udc_controller->gadget.is_otg = 1; /* setup QH and epctrl for ep0 */ @@ -2550,8 +2468,9 @@ static int __init fsl_udc_probe(struct platform_device *pdev) /* for ep0: the desc defined here; * for other eps, gadget layer called ep_enable with defined desc */ - udc_controller->eps[0].desc = &fsl_ep0_desc; - udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD; + udc_controller->eps[0].ep.desc = &fsl_ep0_desc; + usb_ep_set_maxpacket_limit(&udc_controller->eps[0].ep, + USB_MAX_CTRL_PAYLOAD); /* setup the udc->eps[] for non-control endpoints and link * to gadget.ep_list */ @@ -2570,10 +2489,11 @@ static int __init fsl_udc_probe(struct platform_device *pdev) DTD_ALIGNMENT, UDC_DMA_BOUNDARY); if (udc_controller->td_pool == NULL) { ret = -ENOMEM; - goto err_unregister; + goto err_free_irq; } - ret = usb_add_gadget_udc(&pdev->dev, &udc_controller->gadget); + ret = usb_add_gadget_udc_release(&pdev->dev, &udc_controller->gadget, + fsl_udc_release); if (ret) goto err_del_udc; @@ -2582,8 +2502,6 @@ static int __init fsl_udc_probe(struct platform_device *pdev) err_del_udc: dma_pool_destroy(udc_controller->td_pool); -err_unregister: - device_unregister(&udc_controller->gadget.dev); err_free_irq: free_irq(udc_controller->irq, udc_controller); err_iounmap: @@ -2607,15 +2525,15 @@ err_kfree: static int __exit fsl_udc_remove(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); DECLARE_COMPLETION(done); if (!udc_controller) return -ENODEV; - usb_del_gadget_udc(&udc_controller->gadget); udc_controller->done = &done; + usb_del_gadget_udc(&udc_controller->gadget); fsl_udc_clk_release(); @@ -2633,7 +2551,6 @@ static int __exit fsl_udc_remove(struct platform_device *pdev) if (pdata->operating_mode == FSL_USB2_DR_DEVICE) release_mem_region(res->start, resource_size(res)); - device_unregister(&udc_controller->gadget.dev); /* free udc --wait for the release() finished */ wait_for_completion(&done); @@ -2729,40 +2646,36 @@ static int fsl_udc_otg_resume(struct device *dev) return fsl_udc_resume(NULL); } - /*------------------------------------------------------------------------- Register entry point for the peripheral controller driver --------------------------------------------------------------------------*/ - +static const struct platform_device_id fsl_udc_devtype[] = { + { + .name = "imx-udc-mx27", + }, { + .name = "imx-udc-mx51", + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, fsl_udc_devtype); static struct platform_driver udc_driver = { - .remove = __exit_p(fsl_udc_remove), + .remove = __exit_p(fsl_udc_remove), + /* Just for FSL i.mx SoC currently */ + .id_table = fsl_udc_devtype, /* these suspend and resume are not usb suspend and resume */ - .suspend = fsl_udc_suspend, - .resume = fsl_udc_resume, - .driver = { - .name = (char *)driver_name, - .owner = THIS_MODULE, - /* udc suspend/resume called from OTG driver */ - .suspend = fsl_udc_otg_suspend, - .resume = fsl_udc_otg_resume, + .suspend = fsl_udc_suspend, + .resume = fsl_udc_resume, + .driver = { + .name = driver_name, + .owner = THIS_MODULE, + /* udc suspend/resume called from OTG driver */ + .suspend = fsl_udc_otg_suspend, + .resume = fsl_udc_otg_resume, }, }; -static int __init udc_init(void) -{ - printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION); - return platform_driver_probe(&udc_driver, fsl_udc_probe); -} - -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); - printk(KERN_WARNING "%s unregistered\n", driver_desc); -} - -module_exit(udc_exit); +module_platform_driver_probe(udc_driver, fsl_udc_probe); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR(DRIVER_AUTHOR); diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h index f781f5dec41..c6703bb07b2 100644 --- a/drivers/usb/gadget/fsl_usb2_udc.h +++ b/drivers/usb/gadget/fsl_usb2_udc.h @@ -1,4 +1,12 @@ /* + * Copyright (C) 2004,2012 Freescale Semiconductor, Inc + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * * Freescale USB device/endpoint management registers */ #ifndef __FSL_USB2_UDC_H @@ -348,6 +356,9 @@ struct usb_sys_interface { /* control Register Bit Masks */ #define USB_CTRL_IOENB 0x00000004 #define USB_CTRL_ULPI_INT0EN 0x00000001 +#define USB_CTRL_UTMI_PHY_EN 0x00000200 +#define USB_CTRL_USB_EN 0x00000004 +#define USB_CTRL_ULPI_PHY_CLK_SEL 0x00000400 /* Endpoint Queue Head data struct * Rem: all the variables of qh are LittleEndian Mode @@ -450,7 +461,6 @@ struct fsl_ep { struct list_head queue; struct fsl_udc *udc; struct ep_queue_head *qh; - const struct usb_endpoint_descriptor *desc; struct usb_gadget *gadget; char name[14]; @@ -471,7 +481,7 @@ struct fsl_udc { struct usb_ctrlrequest local_setup_buff; spinlock_t lock; - struct otg_transceiver *transceiver; + struct usb_phy *transceiver; unsigned softconnect:1; unsigned vbus_active:1; unsigned stopped:1; @@ -558,10 +568,10 @@ static void dump_msg(const char *label, const u8 * buf, unsigned int length) /* * ### internal used help routines. */ -#define ep_index(EP) ((EP)->desc->bEndpointAddress&0xF) +#define ep_index(EP) ((EP)->ep.desc->bEndpointAddress&0xF) #define ep_maxpacket(EP) ((EP)->ep.maxpacket) #define ep_is_in(EP) ( (ep_index(EP) == 0) ? (EP->udc->ep0_dir == \ - USB_DIR_IN ):((EP)->desc->bEndpointAddress \ + USB_DIR_IN) : ((EP)->ep.desc->bEndpointAddress \ & USB_DIR_IN)==USB_DIR_IN) #define get_ep_by_pipe(udc, pipe) ((pipe == 1)? &udc->eps[0]: \ &udc->eps[pipe]) @@ -582,15 +592,16 @@ static inline struct ep_queue_head *get_qh_by_ep(struct fsl_ep *ep) struct platform_device; #ifdef CONFIG_ARCH_MXC int fsl_udc_clk_init(struct platform_device *pdev); -void fsl_udc_clk_finalize(struct platform_device *pdev); +int fsl_udc_clk_finalize(struct platform_device *pdev); void fsl_udc_clk_release(void); #else static inline int fsl_udc_clk_init(struct platform_device *pdev) { return 0; } -static inline void fsl_udc_clk_finalize(struct platform_device *pdev) +static inline int fsl_udc_clk_finalize(struct platform_device *pdev) { + return 0; } static inline void fsl_udc_clk_release(void) { diff --git a/drivers/usb/gadget/functions.c b/drivers/usb/gadget/functions.c new file mode 100644 index 00000000000..b13f839e736 --- /dev/null +++ b/drivers/usb/gadget/functions.c @@ -0,0 +1,116 @@ +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/err.h> + +#include <linux/usb/composite.h> + +static LIST_HEAD(func_list); +static DEFINE_MUTEX(func_lock); + +static struct usb_function_instance *try_get_usb_function_instance(const char *name) +{ + struct usb_function_driver *fd; + struct usb_function_instance *fi; + + fi = ERR_PTR(-ENOENT); + mutex_lock(&func_lock); + list_for_each_entry(fd, &func_list, list) { + + if (strcmp(name, fd->name)) + continue; + + if (!try_module_get(fd->mod)) { + fi = ERR_PTR(-EBUSY); + break; + } + fi = fd->alloc_inst(); + if (IS_ERR(fi)) + module_put(fd->mod); + else + fi->fd = fd; + break; + } + mutex_unlock(&func_lock); + return fi; +} + +struct usb_function_instance *usb_get_function_instance(const char *name) +{ + struct usb_function_instance *fi; + int ret; + + fi = try_get_usb_function_instance(name); + if (!IS_ERR(fi)) + return fi; + ret = PTR_ERR(fi); + if (ret != -ENOENT) + return fi; + ret = request_module("usbfunc:%s", name); + if (ret < 0) + return ERR_PTR(ret); + return try_get_usb_function_instance(name); +} +EXPORT_SYMBOL_GPL(usb_get_function_instance); + +struct usb_function *usb_get_function(struct usb_function_instance *fi) +{ + struct usb_function *f; + + f = fi->fd->alloc_func(fi); + if (IS_ERR(f)) + return f; + f->fi = fi; + return f; +} +EXPORT_SYMBOL_GPL(usb_get_function); + +void usb_put_function_instance(struct usb_function_instance *fi) +{ + struct module *mod; + + if (!fi) + return; + + mod = fi->fd->mod; + fi->free_func_inst(fi); + module_put(mod); +} +EXPORT_SYMBOL_GPL(usb_put_function_instance); + +void usb_put_function(struct usb_function *f) +{ + if (!f) + return; + + f->free_func(f); +} +EXPORT_SYMBOL_GPL(usb_put_function); + +int usb_function_register(struct usb_function_driver *newf) +{ + struct usb_function_driver *fd; + int ret; + + ret = -EEXIST; + + mutex_lock(&func_lock); + list_for_each_entry(fd, &func_list, list) { + if (!strcmp(fd->name, newf->name)) + goto out; + } + ret = 0; + list_add_tail(&newf->list, &func_list); +out: + mutex_unlock(&func_lock); + return ret; +} +EXPORT_SYMBOL_GPL(usb_function_register); + +void usb_function_unregister(struct usb_function_driver *fd) +{ + mutex_lock(&func_lock); + list_del(&fd->list); + mutex_unlock(&func_lock); +} +EXPORT_SYMBOL_GPL(usb_function_unregister); diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c index 5831cb4a0b3..3deb4e93807 100644 --- a/drivers/usb/gadget/fusb300_udc.c +++ b/drivers/usb/gadget/fusb300_udc.c @@ -22,7 +22,7 @@ MODULE_DESCRIPTION("FUSB300 USB gadget driver"); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Yuan Hsin Chen <yhchen@faraday-tech.com>"); +MODULE_AUTHOR("Yuan-Hsin Chen, Feng-Hsin Chiang <john453@faraday-tech.com>"); MODULE_ALIAS("platform:fusb300_udc"); #define DRIVER_VERSION "20 October 2010" @@ -203,7 +203,7 @@ static int config_ep(struct fusb300_ep *ep, struct fusb300 *fusb300 = ep->fusb300; struct fusb300_ep_info info; - ep->desc = desc; + ep->ep.desc = desc; info.interval = 0; info.addrofs = 0; @@ -394,7 +394,7 @@ static void fusb300_clear_epnstall(struct fusb300 *fusb300, u8 ep) if (reg & FUSB300_EPSET0_STL) { printk(KERN_DEBUG "EP%d stall... Clear!!\n", ep); - reg &= ~FUSB300_EPSET0_STL; + reg |= FUSB300_EPSET0_STL_CLR; iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET0(ep)); } } @@ -443,7 +443,7 @@ static int fusb300_queue(struct usb_ep *_ep, struct usb_request *_req, req->req.actual = 0; req->req.status = -EINPROGRESS; - if (ep->desc == NULL) /* ep0 */ + if (ep->ep.desc == NULL) /* ep0 */ ep0_queue(ep, req); else if (request && !ep->stall) enable_fifo_int(ep); @@ -557,7 +557,7 @@ static void fusb300_set_cxdone(struct fusb300 *fusb300) } /* read data from cx fifo */ -void fusb300_rdcxf(struct fusb300 *fusb300, +static void fusb300_rdcxf(struct fusb300 *fusb300, u8 *buffer, u32 length) { int i = 0; @@ -930,33 +930,33 @@ static void fusb300_wait_idma_finished(struct fusb300_ep *ep) fusb300_clear_int(ep->fusb300, FUSB300_OFFSET_IGR0, FUSB300_IGR0_EPn_PRD_INT(ep->epnum)); + return; + IDMA_RESET: - fusb300_clear_int(ep->fusb300, FUSB300_OFFSET_IGER0, - FUSB300_IGER0_EEPn_PRD_INT(ep->epnum)); + reg = ioread32(ep->fusb300->reg + FUSB300_OFFSET_IGER0); + reg &= ~FUSB300_IGER0_EEPn_PRD_INT(ep->epnum); + iowrite32(reg, ep->fusb300->reg + FUSB300_OFFSET_IGER0); } -static void fusb300_set_idma(struct fusb300_ep *ep, +static void fusb300_set_idma(struct fusb300_ep *ep, struct fusb300_request *req) { - dma_addr_t d; - - d = dma_map_single(NULL, req->req.buf, req->req.length, DMA_TO_DEVICE); + int ret; - if (dma_mapping_error(NULL, d)) { - printk(KERN_DEBUG "dma_mapping_error\n"); + ret = usb_gadget_map_request(&ep->fusb300->gadget, + &req->req, DMA_TO_DEVICE); + if (ret) return; - } - - dma_sync_single_for_device(NULL, d, req->req.length, DMA_TO_DEVICE); fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_IGER0, FUSB300_IGER0_EEPn_PRD_INT(ep->epnum)); - fusb300_fill_idma_prdtbl(ep, d, req->req.length); + fusb300_fill_idma_prdtbl(ep, req->req.dma, req->req.length); /* check idma is done */ fusb300_wait_idma_finished(ep); - dma_unmap_single(NULL, d, req->req.length, DMA_TO_DEVICE); + usb_gadget_unmap_request(&ep->fusb300->gadget, + &req->req, DMA_TO_DEVICE); } static void in_ep_fifo_handler(struct fusb300_ep *ep) @@ -1308,65 +1308,26 @@ static void init_controller(struct fusb300 *fusb300) iowrite32(0xcfffff9f, fusb300->reg + FUSB300_OFFSET_IGER1); } /*------------------------------------------------------------------------*/ -static struct fusb300 *the_controller; - -static int fusb300_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int fusb300_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct fusb300 *fusb300 = the_controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->setup) - return -EINVAL; - - if (!fusb300) - return -ENODEV; - - if (fusb300->driver) - return -EBUSY; + struct fusb300 *fusb300 = to_fusb300(g); /* hook up the driver */ driver->driver.bus = NULL; fusb300->driver = driver; - fusb300->gadget.dev.driver = &driver->driver; - - retval = device_add(&fusb300->gadget.dev); - if (retval) { - pr_err("device_add error (%d)\n", retval); - goto error; - } - - retval = bind(&fusb300->gadget); - if (retval) { - pr_err("bind to driver error (%d)\n", retval); - device_del(&fusb300->gadget.dev); - goto error; - } return 0; - -error: - fusb300->driver = NULL; - fusb300->gadget.dev.driver = NULL; - - return retval; } -static int fusb300_udc_stop(struct usb_gadget_driver *driver) +static int fusb300_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct fusb300 *fusb300 = the_controller; - - if (driver != fusb300->driver || !driver->unbind) - return -EINVAL; + struct fusb300 *fusb300 = to_fusb300(g); driver->unbind(&fusb300->gadget); - fusb300->gadget.dev.driver = NULL; init_controller(fusb300); - device_del(&fusb300->gadget.dev); fusb300->driver = NULL; return 0; @@ -1378,15 +1339,15 @@ static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active) return 0; } -static struct usb_gadget_ops fusb300_gadget_ops = { +static const struct usb_gadget_ops fusb300_gadget_ops = { .pullup = fusb300_udc_pullup, - .start = fusb300_udc_start, - .stop = fusb300_udc_stop, + .udc_start = fusb300_udc_start, + .udc_stop = fusb300_udc_stop, }; static int __exit fusb300_remove(struct platform_device *pdev) { - struct fusb300 *fusb300 = dev_get_drvdata(&pdev->dev); + struct fusb300 *fusb300 = platform_get_drvdata(pdev); usb_del_gadget_udc(&fusb300->gadget); iounmap(fusb300->reg); @@ -1439,34 +1400,23 @@ static int __init fusb300_probe(struct platform_device *pdev) /* initialize udc */ fusb300 = kzalloc(sizeof(struct fusb300), GFP_KERNEL); - if (fusb300 == NULL) { - pr_err("kzalloc error\n"); + if (fusb300 == NULL) goto clean_up; - } for (i = 0; i < FUSB300_MAX_NUM_EP; i++) { _ep[i] = kzalloc(sizeof(struct fusb300_ep), GFP_KERNEL); - if (_ep[i] == NULL) { - pr_err("_ep kzalloc error\n"); + if (_ep[i] == NULL) goto clean_up; - } fusb300->ep[i] = _ep[i]; } spin_lock_init(&fusb300->lock); - dev_set_drvdata(&pdev->dev, fusb300); + platform_set_drvdata(pdev, fusb300); fusb300->gadget.ops = &fusb300_gadget_ops; - device_initialize(&fusb300->gadget.dev); - - dev_set_name(&fusb300->gadget.dev, "gadget"); - fusb300->gadget.max_speed = USB_SPEED_HIGH; - fusb300->gadget.dev.parent = &pdev->dev; - fusb300->gadget.dev.dma_mask = pdev->dev.dma_mask; - fusb300->gadget.dev.release = pdev->dev.release; fusb300->gadget.name = udc_name; fusb300->reg = reg; @@ -1498,19 +1448,19 @@ static int __init fusb300_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = fusb300_ep_name[i]; ep->ep.ops = &fusb300_ep_ops; - ep->ep.maxpacket = HS_BULK_MAX_PACKET_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, HS_BULK_MAX_PACKET_SIZE); } - fusb300->ep[0]->ep.maxpacket = HS_CTL_MAX_PACKET_SIZE; + usb_ep_set_maxpacket_limit(&fusb300->ep[0]->ep, HS_CTL_MAX_PACKET_SIZE); fusb300->ep[0]->epnum = 0; fusb300->gadget.ep0 = &fusb300->ep[0]->ep; INIT_LIST_HEAD(&fusb300->gadget.ep0->ep_list); - the_controller = fusb300; - fusb300->ep0_req = fusb300_alloc_request(&fusb300->ep[0]->ep, GFP_KERNEL); - if (fusb300->ep0_req == NULL) + if (fusb300->ep0_req == NULL) { + ret = -ENOMEM; goto clean_up3; + } init_controller(fusb300); ret = usb_add_gadget_udc(&pdev->dev, &fusb300->gadget); @@ -1520,6 +1470,7 @@ static int __init fusb300_probe(struct platform_device *pdev) dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); return 0; + err_add_udc: fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req); @@ -1547,15 +1498,4 @@ static struct platform_driver fusb300_driver = { }, }; -static int __init fusb300_udc_init(void) -{ - return platform_driver_probe(&fusb300_driver, fusb300_probe); -} - -module_init(fusb300_udc_init); - -static void __exit fusb300_udc_cleanup(void) -{ - platform_driver_unregister(&fusb300_driver); -} -module_exit(fusb300_udc_cleanup); +module_platform_driver_probe(fusb300_driver, fusb300_probe); diff --git a/drivers/usb/gadget/fusb300_udc.h b/drivers/usb/gadget/fusb300_udc.h index 92745bd0306..ae811d8d38b 100644 --- a/drivers/usb/gadget/fusb300_udc.h +++ b/drivers/usb/gadget/fusb300_udc.h @@ -111,8 +111,8 @@ /* * * EPn Setting 0 (EPn_SET0, offset = 020H+(n-1)*30H, n=1~15 ) * */ +#define FUSB300_EPSET0_STL_CLR (1 << 3) #define FUSB300_EPSET0_CLRSEQNUM (1 << 2) -#define FUSB300_EPSET0_EPn_TX0BYTE (1 << 1) #define FUSB300_EPSET0_STL (1 << 0) /* @@ -650,7 +650,6 @@ struct fusb300_ep { unsigned char epnum; unsigned char type; - const struct usb_endpoint_descriptor *desc; }; struct fusb300 { @@ -674,4 +673,6 @@ struct fusb300 { u8 reenum; /* if re-enumeration */ }; +#define to_fusb300(g) (container_of((g), struct fusb300, gadget)) + #endif diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 0519d77915e..fe12e6a2744 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -2,7 +2,7 @@ * g_ffs.c -- user mode file system API for USB composite function controllers * * Copyright (C) 2010 Samsung Electronics - * Author: Michal Nazarewicz <m.nazarewicz@samsung.com> + * Author: Michal Nazarewicz <mina86@mina86.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -13,22 +13,10 @@ #define pr_fmt(fmt) "g_ffs: " fmt #include <linux/module.h> -#include <linux/utsname.h> - -/* - * kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ - -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" #if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS +#include <linux/netdevice.h> + # if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS # endif @@ -36,25 +24,31 @@ # define USB_ETH_RNDIS y # endif -# include "f_ecm.c" -# include "f_subset.c" +# include "u_ecm.h" +# include "u_gether.h" # ifdef USB_ETH_RNDIS -# include "f_rndis.c" -# include "rndis.c" +# include "u_rndis.h" +# include "rndis.h" # endif -# include "u_ether.c" +# include "u_ether.h" + +USB_ETHERNET_MODULE_PARAMETERS(); -static u8 gfs_hostaddr[ETH_ALEN]; # ifdef CONFIG_USB_FUNCTIONFS_ETH -static int eth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); +static int eth_bind_config(struct usb_configuration *c); +static struct usb_function_instance *fi_ecm; +static struct usb_function *f_ecm; +static struct usb_function_instance *fi_geth; +static struct usb_function *f_geth; +# endif +# ifdef CONFIG_USB_FUNCTIONFS_RNDIS +static int bind_rndis_config(struct usb_configuration *c); +static struct usb_function_instance *fi_rndis; +static struct usb_function *f_rndis; # endif -#else -# define gether_cleanup() do { } while (0) -# define gether_setup(gadget, hostaddr) ((int)0) -# define gfs_hostaddr NULL #endif -#include "f_fs.c" +#include "u_fs.h" #define DRIVER_NAME "g_ffs" #define DRIVER_DESC "USB Function Filesystem" @@ -67,6 +61,10 @@ MODULE_LICENSE("GPL"); #define GFS_VENDOR_ID 0x1d6b /* Linux Foundation */ #define GFS_PRODUCT_ID 0x0105 /* FunctionFS Gadget */ +#define GFS_MAX_DEVS 10 + +USB_GADGET_COMPOSITE_OPTIONS(); + static struct usb_device_descriptor gfs_dev_desc = { .bLength = sizeof gfs_dev_desc, .bDescriptorType = USB_DT_DEVICE, @@ -78,12 +76,17 @@ static struct usb_device_descriptor gfs_dev_desc = { .idProduct = cpu_to_le16(GFS_PRODUCT_ID), }; +static char *func_names[GFS_MAX_DEVS]; +static unsigned int func_num; + module_param_named(bDeviceClass, gfs_dev_desc.bDeviceClass, byte, 0644); MODULE_PARM_DESC(bDeviceClass, "USB Device class"); module_param_named(bDeviceSubClass, gfs_dev_desc.bDeviceSubClass, byte, 0644); MODULE_PARM_DESC(bDeviceSubClass, "USB Device subclass"); module_param_named(bDeviceProtocol, gfs_dev_desc.bDeviceProtocol, byte, 0644); MODULE_PARM_DESC(bDeviceProtocol, "USB Device protocol"); +module_param_array_named(functions, func_names, charp, &func_num, 0); +MODULE_PARM_DESC(functions, "USB Functions list"); static const struct usb_descriptor_header *gfs_otg_desc[] = { (const struct usb_descriptor_header *) @@ -103,6 +106,9 @@ static const struct usb_descriptor_header *gfs_otg_desc[] = { /* String IDs are assigned dynamically */ static struct usb_string gfs_strings[] = { + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", #ifdef CONFIG_USB_FUNCTIONFS_RNDIS { .s = "FunctionFS + RNDIS" }, #endif @@ -125,11 +131,12 @@ static struct usb_gadget_strings *gfs_dev_strings[] = { struct gfs_configuration { struct usb_configuration c; - int (*eth)(struct usb_configuration *c, u8 *ethaddr); + int (*eth)(struct usb_configuration *c); + int num; } gfs_configurations[] = { #ifdef CONFIG_USB_FUNCTIONFS_RNDIS { - .eth = rndis_bind_config, + .eth = bind_rndis_config, }, #endif @@ -145,143 +152,338 @@ struct gfs_configuration { #endif }; +static void *functionfs_acquire_dev(struct ffs_dev *dev); +static void functionfs_release_dev(struct ffs_dev *dev); +static int functionfs_ready_callback(struct ffs_data *ffs); +static void functionfs_closed_callback(struct ffs_data *ffs); static int gfs_bind(struct usb_composite_dev *cdev); static int gfs_unbind(struct usb_composite_dev *cdev); static int gfs_do_config(struct usb_configuration *c); -static struct usb_composite_driver gfs_driver = { + +static __refdata struct usb_composite_driver gfs_driver = { .name = DRIVER_NAME, .dev = &gfs_dev_desc, .strings = gfs_dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = gfs_bind, .unbind = gfs_unbind, - .iProduct = DRIVER_DESC, }; -static struct ffs_data *gfs_ffs_data; -static unsigned long gfs_registered; +static unsigned int missing_funcs; +static bool gfs_registered; +static bool gfs_single_func; +static struct usb_function_instance **fi_ffs; +static struct usb_function **f_ffs[] = { +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + NULL, +#endif -static int gfs_init(void) +#ifdef CONFIG_USB_FUNCTIONFS_ETH + NULL, +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC + NULL, +#endif +}; + +#define N_CONF ARRAY_SIZE(f_ffs) + +static int __init gfs_init(void) { + struct f_fs_opts *opts; + int i; + int ret = 0; + ENTER(); - return functionfs_init(); + if (func_num < 2) { + gfs_single_func = true; + func_num = 1; + } + + /* + * Allocate in one chunk for easier maintenance + */ + f_ffs[0] = kcalloc(func_num * N_CONF, sizeof(*f_ffs), GFP_KERNEL); + if (!f_ffs[0]) { + ret = -ENOMEM; + goto no_func; + } + for (i = 1; i < N_CONF; ++i) + f_ffs[i] = f_ffs[0] + i * func_num; + + fi_ffs = kcalloc(func_num, sizeof(*fi_ffs), GFP_KERNEL); + if (!fi_ffs) { + ret = -ENOMEM; + goto no_func; + } + + for (i = 0; i < func_num; i++) { + fi_ffs[i] = usb_get_function_instance("ffs"); + if (IS_ERR(fi_ffs[i])) { + ret = PTR_ERR(fi_ffs[i]); + --i; + goto no_dev; + } + opts = to_f_fs_opts(fi_ffs[i]); + if (gfs_single_func) + ret = ffs_single_dev(opts->dev); + else + ret = ffs_name_dev(opts->dev, func_names[i]); + if (ret) + goto no_dev; + opts->dev->ffs_ready_callback = functionfs_ready_callback; + opts->dev->ffs_closed_callback = functionfs_closed_callback; + opts->dev->ffs_acquire_dev_callback = functionfs_acquire_dev; + opts->dev->ffs_release_dev_callback = functionfs_release_dev; + opts->no_configfs = true; + } + + missing_funcs = func_num; + + return 0; +no_dev: + while (i >= 0) + usb_put_function_instance(fi_ffs[i--]); + kfree(fi_ffs); +no_func: + kfree(f_ffs[0]); + return ret; } module_init(gfs_init); -static void gfs_exit(void) +static void __exit gfs_exit(void) { + int i; + ENTER(); - if (test_and_clear_bit(0, &gfs_registered)) + if (gfs_registered) usb_composite_unregister(&gfs_driver); + gfs_registered = false; + + kfree(f_ffs[0]); - functionfs_cleanup(); + for (i = 0; i < func_num; i++) + usb_put_function_instance(fi_ffs[i]); + + kfree(fi_ffs); } module_exit(gfs_exit); +static void *functionfs_acquire_dev(struct ffs_dev *dev) +{ + if (!try_module_get(THIS_MODULE)) + return ERR_PTR(-ENODEV); + + return 0; +} + +static void functionfs_release_dev(struct ffs_dev *dev) +{ + module_put(THIS_MODULE); +} + +/* + * The caller of this function takes ffs_lock + */ static int functionfs_ready_callback(struct ffs_data *ffs) { - int ret; + int ret = 0; - ENTER(); + if (--missing_funcs) + return 0; - if (WARN_ON(test_and_set_bit(0, &gfs_registered))) + if (gfs_registered) return -EBUSY; - gfs_ffs_data = ffs; - ret = usb_composite_probe(&gfs_driver, gfs_bind); + gfs_registered = true; + + ret = usb_composite_probe(&gfs_driver); if (unlikely(ret < 0)) - clear_bit(0, &gfs_registered); + gfs_registered = false; + return ret; } +/* + * The caller of this function takes ffs_lock + */ static void functionfs_closed_callback(struct ffs_data *ffs) { - ENTER(); + missing_funcs++; - if (test_and_clear_bit(0, &gfs_registered)) + if (gfs_registered) usb_composite_unregister(&gfs_driver); + gfs_registered = false; } -static int functionfs_check_dev_callback(const char *dev_name) -{ - return 0; -} - +/* + * It is assumed that gfs_bind is called from a context where ffs_lock is held + */ static int gfs_bind(struct usb_composite_dev *cdev) { +#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS + struct net_device *net; +#endif int ret, i; ENTER(); - if (WARN_ON(!gfs_ffs_data)) + if (missing_funcs) return -ENODEV; +#if defined CONFIG_USB_FUNCTIONFS_ETH + if (can_support_ecm(cdev->gadget)) { + struct f_ecm_opts *ecm_opts; + + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + net = ecm_opts->net; + } else { + struct f_gether_opts *geth_opts; + + fi_geth = usb_get_function_instance("geth"); + if (IS_ERR(fi_geth)) + return PTR_ERR(fi_geth); + geth_opts = container_of(fi_geth, struct f_gether_opts, + func_inst); + net = geth_opts->net; + } +#endif - ret = gether_setup(cdev->gadget, gfs_hostaddr); - if (unlikely(ret < 0)) - goto error_quick; +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + { + struct f_rndis_opts *rndis_opts; + + fi_rndis = usb_get_function_instance("rndis"); + if (IS_ERR(fi_rndis)) { + ret = PTR_ERR(fi_rndis); + goto error; + } + rndis_opts = container_of(fi_rndis, struct f_rndis_opts, + func_inst); +#ifndef CONFIG_USB_FUNCTIONFS_ETH + net = rndis_opts->net; +#endif + } +#endif - ret = usb_string_ids_tab(cdev, gfs_strings); - if (unlikely(ret < 0)) - goto error; +#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS + gether_set_qmult(net, qmult); + if (!gether_set_host_addr(net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); +#endif - ret = functionfs_bind(gfs_ffs_data, cdev); +#if defined CONFIG_USB_FUNCTIONFS_RNDIS && defined CONFIG_USB_FUNCTIONFS_ETH + gether_set_gadget(net, cdev->gadget); + ret = gether_register_netdev(net); + if (ret) + goto error_rndis; + + if (can_support_ecm(cdev->gadget)) { + struct f_ecm_opts *ecm_opts; + + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + ecm_opts->bound = true; + } else { + struct f_gether_opts *geth_opts; + + geth_opts = container_of(fi_geth, struct f_gether_opts, + func_inst); + geth_opts->bound = true; + } + + rndis_borrow_net(fi_rndis, net); +#endif + + /* TODO: gstrings_attach? */ + ret = usb_string_ids_tab(cdev, gfs_strings); if (unlikely(ret < 0)) - goto error; + goto error_rndis; + gfs_dev_desc.iProduct = gfs_strings[USB_GADGET_PRODUCT_IDX].id; for (i = 0; i < ARRAY_SIZE(gfs_configurations); ++i) { struct gfs_configuration *c = gfs_configurations + i; + int sid = USB_GADGET_FIRST_AVAIL_IDX + i; - c->c.label = gfs_strings[i].s; - c->c.iConfiguration = gfs_strings[i].id; + c->c.label = gfs_strings[sid].s; + c->c.iConfiguration = gfs_strings[sid].id; c->c.bConfigurationValue = 1 + i; c->c.bmAttributes = USB_CONFIG_ATT_SELFPOWER; + c->num = i; + ret = usb_add_config(cdev, &c->c, gfs_do_config); if (unlikely(ret < 0)) goto error_unbind; } - + usb_composite_overwrite_options(cdev, &coverwrite); return 0; +/* TODO */ error_unbind: - functionfs_unbind(gfs_ffs_data); +error_rndis: +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + usb_put_function_instance(fi_rndis); error: - gether_cleanup(); -error_quick: - gfs_ffs_data = NULL; +#endif +#if defined CONFIG_USB_FUNCTIONFS_ETH + if (can_support_ecm(cdev->gadget)) + usb_put_function_instance(fi_ecm); + else + usb_put_function_instance(fi_geth); +#endif return ret; } +/* + * It is assumed that gfs_unbind is called from a context where ffs_lock is held + */ static int gfs_unbind(struct usb_composite_dev *cdev) { + int i; + ENTER(); - /* - * We may have been called in an error recovery from - * composite_bind() after gfs_unbind() failure so we need to - * check if gfs_ffs_data is not NULL since gfs_bind() handles - * all error recovery itself. I'd rather we werent called - * from composite on orror recovery, but what you're gonna - * do...? - */ - if (gfs_ffs_data) { - gether_cleanup(); - functionfs_unbind(gfs_ffs_data); - gfs_ffs_data = NULL; + +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + usb_put_function(f_rndis); + usb_put_function_instance(fi_rndis); +#endif + +#if defined CONFIG_USB_FUNCTIONFS_ETH + if (can_support_ecm(cdev->gadget)) { + usb_put_function(f_ecm); + usb_put_function_instance(fi_ecm); + } else { + usb_put_function(f_geth); + usb_put_function_instance(fi_geth); } +#endif + for (i = 0; i < N_CONF * func_num; ++i) + usb_put_function(*(f_ffs[0] + i)); return 0; } +/* + * It is assumed that gfs_do_config is called from a context where + * ffs_lock is held + */ static int gfs_do_config(struct usb_configuration *c) { struct gfs_configuration *gc = container_of(c, struct gfs_configuration, c); + int i; int ret; - if (WARN_ON(!gfs_ffs_data)) + if (missing_funcs) return -ENODEV; if (gadget_is_otg(c->cdev->gadget)) { @@ -290,14 +492,23 @@ static int gfs_do_config(struct usb_configuration *c) } if (gc->eth) { - ret = gc->eth(c, gfs_hostaddr); + ret = gc->eth(c); if (unlikely(ret < 0)) return ret; } - ret = functionfs_bind_config(c->cdev, c, gfs_ffs_data); - if (unlikely(ret < 0)) - return ret; + for (i = 0; i < func_num; i++) { + f_ffs[gc->num][i] = usb_get_function(fi_ffs[i]); + if (IS_ERR(f_ffs[gc->num][i])) { + ret = PTR_ERR(f_ffs[gc->num][i]); + goto error; + } + ret = usb_add_function(c, f_ffs[gc->num][i]); + if (ret < 0) { + usb_put_function(f_ffs[gc->num][i]); + goto error; + } + } /* * After previous do_configs there may be some invalid @@ -313,15 +524,59 @@ static int gfs_do_config(struct usb_configuration *c) c->interface[c->next_interface_id] = NULL; return 0; +error: + while (--i >= 0) { + if (!IS_ERR(f_ffs[gc->num][i])) + usb_remove_function(c, f_ffs[gc->num][i]); + usb_put_function(f_ffs[gc->num][i]); + } + return ret; } #ifdef CONFIG_USB_FUNCTIONFS_ETH -static int eth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +static int eth_bind_config(struct usb_configuration *c) { - return can_support_ecm(c->cdev->gadget) - ? ecm_bind_config(c, ethaddr) - : geth_bind_config(c, ethaddr); + int status = 0; + + if (can_support_ecm(c->cdev->gadget)) { + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) + return PTR_ERR(f_ecm); + + status = usb_add_function(c, f_ecm); + if (status < 0) + usb_put_function(f_ecm); + + } else { + f_geth = usb_get_function(fi_geth); + if (IS_ERR(f_geth)) + return PTR_ERR(f_geth); + + status = usb_add_function(c, f_geth); + if (status < 0) + usb_put_function(f_geth); + } + return status; +} + +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + +static int bind_rndis_config(struct usb_configuration *c) +{ + int status = 0; + + f_rndis = usb_get_function(fi_rndis); + if (IS_ERR(f_rndis)) + return PTR_ERR(f_rndis); + + status = usb_add_function(c, f_rndis); + if (status < 0) + usb_put_function(f_rndis); + + return status; } #endif diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h index e84b3c47ed3..15f180904f8 100644 --- a/drivers/usb/gadget/g_zero.h +++ b/drivers/usb/gadget/g_zero.h @@ -6,20 +6,62 @@ #ifndef __G_ZERO_H #define __G_ZERO_H -#include <linux/usb/composite.h> +#define GZERO_BULK_BUFLEN 4096 +#define GZERO_QLEN 32 +#define GZERO_ISOC_INTERVAL 4 +#define GZERO_ISOC_MAXPACKET 1024 -/* global state */ -extern unsigned buflen; -extern const struct usb_descriptor_header *otg_desc[]; +struct usb_zero_options { + unsigned pattern; + unsigned isoc_interval; + unsigned isoc_maxpacket; + unsigned isoc_mult; + unsigned isoc_maxburst; + unsigned bulk_buflen; + unsigned qlen; +}; + +struct f_ss_opts { + struct usb_function_instance func_inst; + unsigned pattern; + unsigned isoc_interval; + unsigned isoc_maxpacket; + unsigned isoc_mult; + unsigned isoc_maxburst; + unsigned bulk_buflen; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +struct f_lb_opts { + struct usb_function_instance func_inst; + unsigned bulk_buflen; + unsigned qlen; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +void lb_modexit(void); +int lb_modinit(void); /* common utilities */ -struct usb_request *alloc_ep_req(struct usb_ep *ep); void free_ep_req(struct usb_ep *ep, struct usb_request *req); void disable_endpoints(struct usb_composite_dev *cdev, - struct usb_ep *in, struct usb_ep *out); - -/* configuration-specific linkup */ -int sourcesink_add(struct usb_composite_dev *cdev, bool autoresume); -int loopback_add(struct usb_composite_dev *cdev, bool autoresume); + struct usb_ep *in, struct usb_ep *out, + struct usb_ep *iso_in, struct usb_ep *iso_out); #endif /* __G_ZERO_H */ diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h index a8855d0b7f3..bcd04bc66b9 100644 --- a/drivers/usb/gadget/gadget_chips.h +++ b/drivers/usb/gadget/gadget_chips.h @@ -15,6 +15,8 @@ #ifndef __GADGET_CHIPS_H #define __GADGET_CHIPS_H +#include <linux/usb/gadget.h> + /* * NOTICE: the entries below are alphabetical and should be kept * that way. @@ -25,103 +27,12 @@ * If you have forgotten the alphabetical order let VIM/EMACS * do that for you. */ -#define gadget_is_amd5536udc(g) (!strcmp("amd5536udc", (g)->name)) #define gadget_is_at91(g) (!strcmp("at91_udc", (g)->name)) -#define gadget_is_atmel_usba(g) (!strcmp("atmel_usba_udc", (g)->name)) -#define gadget_is_ci13xxx_msm(g) (!strcmp("ci13xxx_msm", (g)->name)) -#define gadget_is_ci13xxx_pci(g) (!strcmp("ci13xxx_pci", (g)->name)) -#define gadget_is_dummy(g) (!strcmp("dummy_udc", (g)->name)) -#define gadget_is_dwc3(g) (!strcmp("dwc3-gadget", (g)->name)) -#define gadget_is_fsl_qe(g) (!strcmp("fsl_qe_udc", (g)->name)) -#define gadget_is_fsl_usb2(g) (!strcmp("fsl-usb2-udc", (g)->name)) #define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name)) -#define gadget_is_imx(g) (!strcmp("imx_udc", (g)->name)) -#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name)) -#define gadget_is_m66592(g) (!strcmp("m66592_udc", (g)->name)) #define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name)) -#define gadget_is_net2272(g) (!strcmp("net2272", (g)->name)) #define gadget_is_net2280(g) (!strcmp("net2280", (g)->name)) -#define gadget_is_omap(g) (!strcmp("omap_udc", (g)->name)) -#define gadget_is_pch(g) (!strcmp("pch_udc", (g)->name)) #define gadget_is_pxa(g) (!strcmp("pxa25x_udc", (g)->name)) #define gadget_is_pxa27x(g) (!strcmp("pxa27x_udc", (g)->name)) -#define gadget_is_r8a66597(g) (!strcmp("r8a66597_udc", (g)->name)) -#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name)) -#define gadget_is_s3c2410(g) (!strcmp("s3c2410_udc", (g)->name)) -#define gadget_is_s3c_hsotg(g) (!strcmp("s3c-hsotg", (g)->name)) -#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name)) - -/** - * usb_gadget_controller_number - support bcdDevice id convention - * @gadget: the controller being driven - * - * Return a 2-digit BCD value associated with the peripheral controller, - * suitable for use as part of a bcdDevice value, or a negative error code. - * - * NOTE: this convention is purely optional, and has no meaning in terms of - * any USB specification. If you want to use a different convention in your - * gadget driver firmware -- maybe a more formal revision ID -- feel free. - * - * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!) - * to change their behavior accordingly. For example it might help avoiding - * some chip bug. - */ -static inline int usb_gadget_controller_number(struct usb_gadget *gadget) -{ - if (gadget_is_net2280(gadget)) - return 0x01; - else if (gadget_is_dummy(gadget)) - return 0x02; - else if (gadget_is_pxa(gadget)) - return 0x03; - else if (gadget_is_goku(gadget)) - return 0x06; - else if (gadget_is_omap(gadget)) - return 0x08; - else if (gadget_is_pxa27x(gadget)) - return 0x11; - else if (gadget_is_s3c2410(gadget)) - return 0x12; - else if (gadget_is_at91(gadget)) - return 0x13; - else if (gadget_is_imx(gadget)) - return 0x14; - else if (gadget_is_musbhdrc(gadget)) - return 0x16; - else if (gadget_is_atmel_usba(gadget)) - return 0x18; - else if (gadget_is_fsl_usb2(gadget)) - return 0x19; - else if (gadget_is_amd5536udc(gadget)) - return 0x20; - else if (gadget_is_m66592(gadget)) - return 0x21; - else if (gadget_is_fsl_qe(gadget)) - return 0x22; - else if (gadget_is_ci13xxx_pci(gadget)) - return 0x23; - else if (gadget_is_langwell(gadget)) - return 0x24; - else if (gadget_is_r8a66597(gadget)) - return 0x25; - else if (gadget_is_s3c_hsotg(gadget)) - return 0x26; - else if (gadget_is_pch(gadget)) - return 0x27; - else if (gadget_is_ci13xxx_msm(gadget)) - return 0x28; - else if (gadget_is_renesas_usbhs(gadget)) - return 0x29; - else if (gadget_is_s3c_hsudc(gadget)) - return 0x30; - else if (gadget_is_net2272(gadget)) - return 0x31; - else if (gadget_is_dwc3(gadget)) - return 0x32; - - return -ENOENT; -} - /** * gadget_supports_altsettings - return true if altsettings work diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c index 681bd038b1d..e879e2c9f46 100644 --- a/drivers/usb/gadget/gmidi.c +++ b/drivers/usb/gadget/gmidi.c @@ -22,7 +22,6 @@ #include <linux/kernel.h> #include <linux/slab.h> -#include <linux/utsname.h> #include <linux/module.h> #include <linux/device.h> @@ -31,16 +30,13 @@ #include <sound/rawmidi.h> #include <linux/usb/ch9.h> +#include <linux/usb/composite.h> #include <linux/usb/gadget.h> #include <linux/usb/audio.h> #include <linux/usb/midi.h> #include "gadget_chips.h" -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" #include "f_midi.c" /*-------------------------------------------------------------------------*/ @@ -51,6 +47,8 @@ MODULE_LICENSE("GPL v2"); static const char shortname[] = "g_midi"; static const char longname[] = "MIDI Gadget"; +USB_GADGET_COMPOSITE_OPTIONS(); + static int index = SNDRV_DEFAULT_IDX1; module_param(index, int, S_IRUGO); MODULE_PARM_DESC(index, "Index value for the USB MIDI Gadget adapter."); @@ -85,9 +83,7 @@ MODULE_PARM_DESC(out_ports, "Number of MIDI output ports"); /* string IDs are assigned dynamically */ -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 -#define STRING_DESCRIPTION_IDX 2 +#define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX static struct usb_device_descriptor device_desc = { .bLength = USB_DT_DEVICE_SIZE, @@ -102,8 +98,9 @@ static struct usb_device_descriptor device_desc = { }; static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = "Grey Innovation", - [STRING_PRODUCT_IDX].s = "MIDI Gadget", + [USB_GADGET_MANUFACTURER_IDX].s = "Grey Innovation", + [USB_GADGET_PRODUCT_IDX].s = "MIDI Gadget", + [USB_GADGET_SERIAL_IDX].s = "", [STRING_DESCRIPTION_IDX].s = "MIDI", { } /* end of list */ }; @@ -128,7 +125,7 @@ static struct usb_configuration midi_config = { .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_ONE, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, + .MaxPower = CONFIG_USB_GADGET_VBUS_DRAW, }; static int __init midi_bind_config(struct usb_configuration *c) @@ -140,61 +137,35 @@ static int __init midi_bind_config(struct usb_configuration *c) static int __init midi_bind(struct usb_composite_dev *cdev) { - struct usb_gadget *gadget = cdev->gadget; - int gcnum, status; - - status = usb_string_id(cdev); - if (status < 0) - return status; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; + int status; - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) return status; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; - - /* config description */ - status = usb_string_id(cdev); - if (status < 0) - return status; - strings_dev[STRING_DESCRIPTION_IDX].id = status; - - midi_config.iConfiguration = status; - - gcnum = usb_gadget_controller_number(gadget); - if (gcnum < 0) { - /* gmidi is so simple (no altsettings) that - * it SHOULD NOT have problems with bulk-capable hardware. - * so warn about unrecognized controllers, don't panic. - */ - pr_warning("%s: controller '%s' not recognized\n", - __func__, gadget->name); - device_desc.bcdDevice = cpu_to_le16(0x9999); - } else { - device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum); - } + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + midi_config.iConfiguration = strings_dev[STRING_DESCRIPTION_IDX].id; status = usb_add_config(cdev, &midi_config, midi_bind_config); if (status < 0) return status; - + usb_composite_overwrite_options(cdev, &coverwrite); pr_info("%s\n", longname); return 0; } -static struct usb_composite_driver midi_driver = { +static __refdata struct usb_composite_driver midi_driver = { .name = (char *) longname, .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = midi_bind, .unbind = __exit_p(midi_unbind), }; static int __init midi_init(void) { - return usb_composite_probe(&midi_driver, midi_bind); + return usb_composite_probe(&midi_driver); } module_init(midi_init); diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index 5af70fcce13..6c85839e15a 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -30,11 +30,11 @@ #include <linux/ioport.h> #include <linux/slab.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/device.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -43,7 +43,6 @@ #include <asm/byteorder.h> #include <asm/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/unaligned.h> @@ -52,8 +51,6 @@ #define DRIVER_DESC "TC86C001 USB Device Controller" #define DRIVER_VERSION "30-Oct 2003" -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - static const char driver_name [] = "goku_udc"; static const char driver_desc [] = DRIVER_DESC; @@ -103,7 +100,7 @@ goku_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) unsigned long flags; ep = container_of(_ep, struct goku_ep, ep); - if (!_ep || !desc || ep->desc + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) return -EINVAL; dev = ep->dev; @@ -177,7 +174,7 @@ goku_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) command(ep->dev->regs, COMMAND_RESET, ep->num); ep->ep.maxpacket = max; ep->stopped = 0; - ep->desc = desc; + ep->ep.desc = desc; spin_unlock_irqrestore(&ep->dev->lock, flags); DBG(dev, "enable %s %s %s maxpacket %u\n", ep->ep.name, @@ -233,8 +230,8 @@ static void ep_reset(struct goku_udc_regs __iomem *regs, struct goku_ep *ep) } } - ep->ep.maxpacket = MAX_FIFO_SIZE; - ep->desc = NULL; + usb_ep_set_maxpacket_limit(&ep->ep, MAX_FIFO_SIZE); + ep->ep.desc = NULL; ep->stopped = 1; ep->irqs = 0; ep->dma = 0; @@ -247,7 +244,7 @@ static int goku_ep_disable(struct usb_ep *_ep) unsigned long flags; ep = container_of(_ep, struct goku_ep, ep); - if (!_ep || !ep->desc) + if (!_ep || !ep->ep.desc) return -ENODEV; dev = ep->dev; if (dev->ep0state == EP0_SUSPEND) @@ -276,7 +273,6 @@ goku_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) if (!req) return NULL; - req->req.dma = DMA_ADDR_INVALID; INIT_LIST_HEAD(&req->queue); return &req->req; } @@ -310,12 +306,9 @@ done(struct goku_ep *ep, struct goku_request *req, int status) status = req->req.status; dev = ep->dev; - if (req->mapped) { - pci_unmap_single(dev->pdev, req->req.dma, req->req.length, - ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } + + if (ep->dma) + usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in); #ifndef USB_TRACE if (status && status != -ESHUTDOWN) @@ -725,7 +718,7 @@ goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) || !_req->buf || !list_empty(&req->queue))) return -EINVAL; ep = container_of(_ep, struct goku_ep, ep); - if (unlikely(!_ep || (!ep->desc && ep->num != 0))) + if (unlikely(!_ep || (!ep->ep.desc && ep->num != 0))) return -EINVAL; dev = ep->dev; if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) @@ -736,10 +729,11 @@ goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return -EBUSY; /* set up dma mapping in case the caller didn't */ - if (ep->dma && _req->dma == DMA_ADDR_INVALID) { - _req->dma = pci_map_single(dev->pdev, _req->buf, _req->length, - ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); - req->mapped = 1; + if (ep->dma) { + status = usb_gadget_map_request(&dev->gadget, &req->req, + ep->is_in); + if (status) + return status; } #ifdef USB_TRACE @@ -777,7 +771,7 @@ goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) } /* else pio or dma irq handler advances the queue. */ - if (likely(req != 0)) + if (likely(req != NULL)) list_add_tail(&req->queue, &ep->queue); if (likely(!list_empty(&ep->queue)) @@ -817,7 +811,7 @@ static int goku_dequeue(struct usb_ep *_ep, struct usb_request *_req) unsigned long flags; ep = container_of(_ep, struct goku_ep, ep); - if (!_ep || !_req || (!ep->desc && ep->num != 0)) + if (!_ep || !_req || (!ep->ep.desc && ep->num != 0)) return -EINVAL; dev = ep->dev; if (!dev->driver) @@ -898,7 +892,7 @@ static int goku_set_halt(struct usb_ep *_ep, int value) return -EINVAL; /* don't change EPxSTATUS_EP_INVALID to READY */ - } else if (!ep->desc) { + } else if (!ep->ep.desc) { DBG(ep->dev, "%s %s inactive?\n", __func__, ep->ep.name); return -EINVAL; } @@ -957,7 +951,7 @@ static void goku_fifo_flush(struct usb_ep *_ep) VDBG(ep->dev, "%s %s\n", __func__, ep->ep.name); /* don't change EPxSTATUS_EP_INVALID to READY */ - if (!ep->desc && ep->num != 0) { + if (!ep->ep.desc && ep->num != 0) { DBG(ep->dev, "%s %s inactive?\n", __func__, ep->ep.name); return; } @@ -996,21 +990,22 @@ static int goku_get_frame(struct usb_gadget *_gadget) return -EOPNOTSUPP; } -static int goku_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int goku_stop(struct usb_gadget_driver *driver); +static int goku_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int goku_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops goku_ops = { .get_frame = goku_get_frame, - .start = goku_start, - .stop = goku_stop, + .udc_start = goku_udc_start, + .udc_stop = goku_udc_stop, // no remote wakeup // not selfpowered }; /*-------------------------------------------------------------------------*/ -static inline char *dmastr(void) +static inline const char *dmastr(void) { if (use_dma == 0) return "(dma disabled)"; @@ -1027,13 +1022,10 @@ static const char proc_node_name [] = "driver/udc"; #define FOURBITS "%s%s%s%s" #define EIGHTBITS FOURBITS FOURBITS -static void -dump_intmask(const char *label, u32 mask, char **next, unsigned *size) +static void dump_intmask(struct seq_file *m, const char *label, u32 mask) { - int t; - /* int_status is the same format ... */ - t = scnprintf(*next, *size, + seq_printf(m, "%s %05X =" FOURBITS EIGHTBITS EIGHTBITS "\n", label, mask, (mask & INT_PWRDETECT) ? " power" : "", @@ -1060,33 +1052,23 @@ dump_intmask(const char *label, u32 mask, char **next, unsigned *size) (mask & INT_ENDPOINT0) ? " ep0" : "", (mask & INT_USBRESET) ? " reset" : "", (mask & INT_SUSPEND) ? " suspend" : ""); - *size -= t; - *next += t; } -static int -udc_proc_read(char *buffer, char **start, off_t off, int count, - int *eof, void *_dev) +static int udc_proc_read(struct seq_file *m, void *v) { - char *buf = buffer; - struct goku_udc *dev = _dev; + struct goku_udc *dev = m->private; struct goku_udc_regs __iomem *regs = dev->regs; - char *next = buf; - unsigned size = count; unsigned long flags; - int i, t, is_usb_connected; + int i, is_usb_connected; u32 tmp; - if (off != 0) - return 0; - local_irq_save(flags); /* basic device status */ tmp = readl(®s->power_detect); is_usb_connected = tmp & PW_DETECT; - t = scnprintf(next, size, + seq_printf(m, "%s - %s\n" "%s version: %s %s\n" "Gadget driver: %s\n" @@ -1098,7 +1080,7 @@ udc_proc_read(char *buffer, char **start, off_t off, int count, is_usb_connected ? ((tmp & PW_PULLUP) ? "full speed" : "powered") : "disconnected", - ({char *state; + ({const char *state; switch(dev->ep0state){ case EP0_DISCONNECT: state = "ep0_disconnect"; break; case EP0_IDLE: state = "ep0_idle"; break; @@ -1110,27 +1092,24 @@ udc_proc_read(char *buffer, char **start, off_t off, int count, default: state = "ep0_?"; break; } state; }) ); - size -= t; - next += t; - dump_intmask("int_status", readl(®s->int_status), &next, &size); - dump_intmask("int_enable", readl(®s->int_enable), &next, &size); + dump_intmask(m, "int_status", readl(®s->int_status)); + dump_intmask(m, "int_enable", readl(®s->int_enable)); if (!is_usb_connected || !dev->driver || (tmp & PW_PULLUP) == 0) goto done; /* registers for (active) device and ep0 */ - t = scnprintf(next, size, "\nirqs %lu\ndataset %02x " + if (seq_printf(m, "\nirqs %lu\ndataset %02x " "single.bcs %02x.%02x state %x addr %u\n", dev->irqs, readl(®s->DataSet), readl(®s->EPxSingle), readl(®s->EPxBCS), readl(®s->UsbState), - readl(®s->address)); - size -= t; - next += t; + readl(®s->address)) < 0) + goto done; tmp = readl(®s->dma_master); - t = scnprintf(next, size, + if (seq_printf(m, "dma %03X =" EIGHTBITS "%s %s\n", tmp, (tmp & MST_EOPB_DIS) ? " eopb-" : "", (tmp & MST_EOPB_ENA) ? " eopb+" : "", @@ -1145,20 +1124,19 @@ udc_proc_read(char *buffer, char **start, off_t off, int count, (tmp & MST_WR_ENA) ? " OUT" : "", (tmp & MST_CONNECTION) ? "ep1in/ep2out" - : "ep1out/ep2in"); - size -= t; - next += t; + : "ep1out/ep2in") < 0) + goto done; /* dump endpoint queues */ for (i = 0; i < 4; i++) { struct goku_ep *ep = &dev->ep [i]; struct goku_request *req; - if (i && !ep->desc) + if (i && !ep->ep.desc) continue; tmp = readl(ep->reg_status); - t = scnprintf(next, size, + if (seq_printf(m, "%s %s max %u %s, irqs %lu, " "status %02x (%s) " FOURBITS "\n", ep->ep.name, @@ -1186,23 +1164,17 @@ udc_proc_read(char *buffer, char **start, off_t off, int count, s = "invalid"; break; default: s = "?"; break; - }; s; }), + } s; }), (tmp & EPxSTATUS_TOGGLE) ? "data1" : "data0", (tmp & EPxSTATUS_SUSPEND) ? " suspend" : "", (tmp & EPxSTATUS_FIFO_DISABLE) ? " disable" : "", (tmp & EPxSTATUS_STAGE_ERROR) ? " ep0stat" : "" - ); - if (t <= 0 || t > size) + ) < 0) goto done; - size -= t; - next += t; if (list_empty(&ep->queue)) { - t = scnprintf(next, size, "\t(nothing queued)\n"); - if (t <= 0 || t > size) + if (seq_puts(m, "\t(nothing queued)\n") < 0) goto done; - size -= t; - next += t; continue; } list_for_each_entry(req, &ep->queue, queue) { @@ -1216,23 +1188,34 @@ udc_proc_read(char *buffer, char **start, off_t off, int count, } else tmp = req->req.actual; - t = scnprintf(next, size, + if (seq_printf(m, "\treq %p len %u/%u buf %p\n", &req->req, tmp, req->req.length, - req->req.buf); - if (t <= 0 || t > size) + req->req.buf) < 0) goto done; - size -= t; - next += t; } } done: local_irq_restore(flags); - *eof = 1; - return count - size; + return 0; +} + +/* + * seq_file wrappers for procfile show routines. + */ +static int udc_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, udc_proc_read, PDE_DATA(file_inode(file))); } +static const struct file_operations udc_proc_fops = { + .open = udc_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ /*-------------------------------------------------------------------------*/ @@ -1267,7 +1250,7 @@ static void udc_reinit (struct goku_udc *dev) } dev->ep[0].reg_mode = NULL; - dev->ep[0].ep.maxpacket = MAX_EP0_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[0].ep, MAX_EP0_SIZE); list_del_init (&dev->ep[0].ep.ep_list); } @@ -1342,96 +1325,56 @@ static void udc_enable(struct goku_udc *dev) * - one function driver, initted second */ -static struct goku_udc *the_controller; - /* when a driver is successfully registered, it will receive * control requests including set_configuration(), which enables * non-control requests. then usb traffic follows until a * disconnect is reported. then a host may connect again, or * the driver might get unbound. */ -static int goku_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int goku_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct goku_udc *dev = the_controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->disconnect - || !driver->setup) - return -EINVAL; - if (!dev) - return -ENODEV; - if (dev->driver) - return -EBUSY; + struct goku_udc *dev = to_goku_udc(g); /* hook up the driver */ driver->driver.bus = NULL; dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; - retval = bind(&dev->gadget); - if (retval) { - DBG(dev, "bind to driver %s --> error %d\n", - driver->driver.name, retval); - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } - /* then enable host detection and ep0; and we're ready + /* + * then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ udc_enable(dev); - DBG(dev, "registered gadget driver '%s'\n", driver->driver.name); return 0; } -static void -stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver) +static void stop_activity(struct goku_udc *dev) { unsigned i; DBG (dev, "%s\n", __func__); - if (dev->gadget.speed == USB_SPEED_UNKNOWN) - driver = NULL; - /* disconnect gadget driver after quiesceing hw and the driver */ udc_reset (dev); for (i = 0; i < 4; i++) nuke(&dev->ep [i], -ESHUTDOWN); - if (driver) { - spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } if (dev->driver) udc_enable(dev); } -static int goku_stop(struct usb_gadget_driver *driver) +static int goku_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct goku_udc *dev = the_controller; + struct goku_udc *dev = to_goku_udc(g); unsigned long flags; - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver || !driver->unbind) - return -EINVAL; - spin_lock_irqsave(&dev->lock, flags); dev->driver = NULL; - stop_activity(dev, driver); + stop_activity(dev); spin_unlock_irqrestore(&dev->lock, flags); - driver->unbind(&dev->gadget); - dev->gadget.dev.driver = NULL; - - DBG(dev, "unregistered driver '%s'\n", driver->driver.name); return 0; } @@ -1475,7 +1418,8 @@ static void ep0_setup(struct goku_udc *dev) case USB_RECIP_ENDPOINT: tmp = le16_to_cpu(ctrl.wIndex) & 0x0f; /* active endpoint */ - if (tmp > 3 || (!dev->ep[tmp].desc && tmp != 0)) + if (tmp > 3 || + (!dev->ep[tmp].ep.desc && tmp != 0)) goto stall; if (ctrl.wIndex & cpu_to_le16( USB_DIR_IN)) { @@ -1572,7 +1516,7 @@ rescan: if (unlikely(stat & INT_DEVWIDE)) { if (stat & INT_SYSERROR) { ERROR(dev, "system error\n"); - stop_activity(dev, dev->driver); + stop_activity(dev); stat = 0; handled = 1; // FIXME have a neater way to prevent re-enumeration @@ -1587,7 +1531,7 @@ rescan: } else { DBG(dev, "disconnect\n"); if (dev->gadget.speed == USB_SPEED_FULL) - stop_activity(dev, dev->driver); + stop_activity(dev); dev->ep0state = EP0_DISCONNECT; dev->int_enable = INT_DEVWIDE; writel(dev->int_enable, &dev->regs->int_enable); @@ -1751,12 +1695,8 @@ static void goku_remove(struct pci_dev *pdev) pci_resource_len (pdev, 0)); if (dev->enabled) pci_disable_device(pdev); - if (dev->registered) - device_unregister(&dev->gadget.dev); - pci_set_drvdata(pdev, NULL); dev->regs = NULL; - the_controller = NULL; INFO(dev, "unbind\n"); } @@ -1772,13 +1712,6 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) void __iomem *base = NULL; int retval; - /* if you want to support more than one controller in a system, - * usb_gadget_driver_{register,unregister}() must change. - */ - if (the_controller) { - pr_warning("ignoring %s\n", pci_name(pdev)); - return -EBUSY; - } if (!pdev->irq) { printk(KERN_ERR "Check PCI %s IRQ setup!\n", pci_name(pdev)); retval = -ENODEV; @@ -1799,10 +1732,6 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) dev->gadget.max_speed = USB_SPEED_FULL; /* the "gadget" abstracts/virtualizes the controller */ - dev_set_name(&dev->gadget.dev, "gadget"); - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; - dev->gadget.dev.release = gadget_release; dev->gadget.name = driver_name; /* now all the pci goodies ... */ @@ -1838,7 +1767,7 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* init to known state, then setup irqs */ udc_reset(dev); udc_reinit (dev); - if (request_irq(pdev->irq, goku_irq, IRQF_SHARED/*|IRQF_SAMPLE_RANDOM*/, + if (request_irq(pdev->irq, goku_irq, IRQF_SHARED, driver_name, dev) != 0) { DBG(dev, "request interrupt %d failed\n", pdev->irq); retval = -EBUSY; @@ -1850,17 +1779,11 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) #ifdef CONFIG_USB_GADGET_DEBUG_FILES - create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev); + proc_create_data(proc_node_name, 0, NULL, &udc_proc_fops, dev); #endif - the_controller = dev; - retval = device_register(&dev->gadget.dev); - if (retval) { - put_device(&dev->gadget.dev); - goto err; - } - dev->registered = 1; - retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget); + retval = usb_add_gadget_udc_release(&pdev->dev, &dev->gadget, + gadget_release); if (retval) goto err; @@ -1897,14 +1820,4 @@ static struct pci_driver goku_pci_driver = { /* FIXME add power management support */ }; -static int __init init (void) -{ - return pci_register_driver (&goku_pci_driver); -} -module_init (init); - -static void __exit cleanup (void) -{ - pci_unregister_driver (&goku_pci_driver); -} -module_exit (cleanup); +module_pci_driver(goku_pci_driver); diff --git a/drivers/usb/gadget/goku_udc.h b/drivers/usb/gadget/goku_udc.h index e7e0c69d3b1..86d2adafe14 100644 --- a/drivers/usb/gadget/goku_udc.h +++ b/drivers/usb/gadget/goku_udc.h @@ -216,7 +216,6 @@ struct goku_ep { /* analogous to a host-side qh */ struct list_head queue; - const struct usb_endpoint_descriptor *desc; u32 __iomem *reg_fifo; u32 __iomem *reg_mode; @@ -251,8 +250,7 @@ struct goku_udc { got_region:1, req_config:1, configured:1, - enabled:1, - registered:1; + enabled:1; /* pci state used to access those endpoints */ struct pci_dev *pdev; @@ -262,6 +260,7 @@ struct goku_udc { /* statistics... */ unsigned long irqs; }; +#define to_goku_udc(g) (container_of((g), struct goku_udc, gadget)) /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c new file mode 100644 index 00000000000..c7004ee89c9 --- /dev/null +++ b/drivers/usb/gadget/gr_udc.c @@ -0,0 +1,2236 @@ +/* + * USB Peripheral Controller driver for Aeroflex Gaisler GRUSBDC. + * + * 2013 (c) Aeroflex Gaisler AB + * + * This driver supports GRUSBDC USB Device Controller cores available in the + * GRLIB VHDL IP core library. + * + * Full documentation of the GRUSBDC core can be found here: + * http://www.gaisler.com/products/grlib/grip.pdf + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Contributors: + * - Andreas Larsson <andreas@gaisler.com> + * - Marko Isomaki + */ + +/* + * A GRUSBDC core can have up to 16 IN endpoints and 16 OUT endpoints each + * individually configurable to any of the four USB transfer types. This driver + * only supports cores in DMA mode. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/of_platform.h> +#include <linux/of_irq.h> +#include <linux/of_address.h> + +#include <asm/byteorder.h> + +#include "gr_udc.h" + +#define DRIVER_NAME "gr_udc" +#define DRIVER_DESC "Aeroflex Gaisler GRUSBDC USB Peripheral Controller" + +static const char driver_name[] = DRIVER_NAME; +static const char driver_desc[] = DRIVER_DESC; + +#define gr_read32(x) (ioread32be((x))) +#define gr_write32(x, v) (iowrite32be((v), (x))) + +/* USB speed and corresponding string calculated from status register value */ +#define GR_SPEED(status) \ + ((status & GR_STATUS_SP) ? USB_SPEED_FULL : USB_SPEED_HIGH) +#define GR_SPEED_STR(status) usb_speed_string(GR_SPEED(status)) + +/* Size of hardware buffer calculated from epctrl register value */ +#define GR_BUFFER_SIZE(epctrl) \ + ((((epctrl) & GR_EPCTRL_BUFSZ_MASK) >> GR_EPCTRL_BUFSZ_POS) * \ + GR_EPCTRL_BUFSZ_SCALER) + +/* ---------------------------------------------------------------------- */ +/* Debug printout functionality */ + +static const char * const gr_modestring[] = {"control", "iso", "bulk", "int"}; + +static const char *gr_ep0state_string(enum gr_ep0state state) +{ + static const char *const names[] = { + [GR_EP0_DISCONNECT] = "disconnect", + [GR_EP0_SETUP] = "setup", + [GR_EP0_IDATA] = "idata", + [GR_EP0_ODATA] = "odata", + [GR_EP0_ISTATUS] = "istatus", + [GR_EP0_OSTATUS] = "ostatus", + [GR_EP0_STALL] = "stall", + [GR_EP0_SUSPEND] = "suspend", + }; + + if (state < 0 || state >= ARRAY_SIZE(names)) + return "UNKNOWN"; + + return names[state]; +} + +#ifdef VERBOSE_DEBUG + +static void gr_dbgprint_request(const char *str, struct gr_ep *ep, + struct gr_request *req) +{ + int buflen = ep->is_in ? req->req.length : req->req.actual; + int rowlen = 32; + int plen = min(rowlen, buflen); + + dev_dbg(ep->dev->dev, "%s: 0x%p, %d bytes data%s:\n", str, req, buflen, + (buflen > plen ? " (truncated)" : "")); + print_hex_dump_debug(" ", DUMP_PREFIX_NONE, + rowlen, 4, req->req.buf, plen, false); +} + +static void gr_dbgprint_devreq(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index, u16 length) +{ + dev_vdbg(dev->dev, "REQ: %02x.%02x v%04x i%04x l%04x\n", + type, request, value, index, length); +} +#else /* !VERBOSE_DEBUG */ + +static void gr_dbgprint_request(const char *str, struct gr_ep *ep, + struct gr_request *req) {} + +static void gr_dbgprint_devreq(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index, u16 length) {} + +#endif /* VERBOSE_DEBUG */ + +/* ---------------------------------------------------------------------- */ +/* Debugfs functionality */ + +#ifdef CONFIG_USB_GADGET_DEBUG_FS + +static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep) +{ + u32 epctrl = gr_read32(&ep->regs->epctrl); + u32 epstat = gr_read32(&ep->regs->epstat); + int mode = (epctrl & GR_EPCTRL_TT_MASK) >> GR_EPCTRL_TT_POS; + struct gr_request *req; + + seq_printf(seq, "%s:\n", ep->ep.name); + seq_printf(seq, " mode = %s\n", gr_modestring[mode]); + seq_printf(seq, " halted: %d\n", !!(epctrl & GR_EPCTRL_EH)); + seq_printf(seq, " disabled: %d\n", !!(epctrl & GR_EPCTRL_ED)); + seq_printf(seq, " valid: %d\n", !!(epctrl & GR_EPCTRL_EV)); + seq_printf(seq, " dma_start = %d\n", ep->dma_start); + seq_printf(seq, " stopped = %d\n", ep->stopped); + seq_printf(seq, " wedged = %d\n", ep->wedged); + seq_printf(seq, " callback = %d\n", ep->callback); + seq_printf(seq, " maxpacket = %d\n", ep->ep.maxpacket); + seq_printf(seq, " maxpacket_limit = %d\n", ep->ep.maxpacket_limit); + seq_printf(seq, " bytes_per_buffer = %d\n", ep->bytes_per_buffer); + if (mode == 1 || mode == 3) + seq_printf(seq, " nt = %d\n", + (epctrl & GR_EPCTRL_NT_MASK) >> GR_EPCTRL_NT_POS); + + seq_printf(seq, " Buffer 0: %s %s%d\n", + epstat & GR_EPSTAT_B0 ? "valid" : "invalid", + epstat & GR_EPSTAT_BS ? " " : "selected ", + (epstat & GR_EPSTAT_B0CNT_MASK) >> GR_EPSTAT_B0CNT_POS); + seq_printf(seq, " Buffer 1: %s %s%d\n", + epstat & GR_EPSTAT_B1 ? "valid" : "invalid", + epstat & GR_EPSTAT_BS ? "selected " : " ", + (epstat & GR_EPSTAT_B1CNT_MASK) >> GR_EPSTAT_B1CNT_POS); + + if (list_empty(&ep->queue)) { + seq_puts(seq, " Queue: empty\n\n"); + return; + } + + seq_puts(seq, " Queue:\n"); + list_for_each_entry(req, &ep->queue, queue) { + struct gr_dma_desc *desc; + struct gr_dma_desc *next; + + seq_printf(seq, " 0x%p: 0x%p %d %d\n", req, + &req->req.buf, req->req.actual, req->req.length); + + next = req->first_desc; + do { + desc = next; + next = desc->next_desc; + seq_printf(seq, " %c 0x%p (0x%08x): 0x%05x 0x%08x\n", + desc == req->curr_desc ? 'c' : ' ', + desc, desc->paddr, desc->ctrl, desc->data); + } while (desc != req->last_desc); + } + seq_puts(seq, "\n"); +} + + +static int gr_seq_show(struct seq_file *seq, void *v) +{ + struct gr_udc *dev = seq->private; + u32 control = gr_read32(&dev->regs->control); + u32 status = gr_read32(&dev->regs->status); + struct gr_ep *ep; + + seq_printf(seq, "usb state = %s\n", + usb_state_string(dev->gadget.state)); + seq_printf(seq, "address = %d\n", + (control & GR_CONTROL_UA_MASK) >> GR_CONTROL_UA_POS); + seq_printf(seq, "speed = %s\n", GR_SPEED_STR(status)); + seq_printf(seq, "ep0state = %s\n", gr_ep0state_string(dev->ep0state)); + seq_printf(seq, "irq_enabled = %d\n", dev->irq_enabled); + seq_printf(seq, "remote_wakeup = %d\n", dev->remote_wakeup); + seq_printf(seq, "test_mode = %d\n", dev->test_mode); + seq_puts(seq, "\n"); + + list_for_each_entry(ep, &dev->ep_list, ep_list) + gr_seq_ep_show(seq, ep); + + return 0; +} + +static int gr_dfs_open(struct inode *inode, struct file *file) +{ + return single_open(file, gr_seq_show, inode->i_private); +} + +static const struct file_operations gr_dfs_fops = { + .owner = THIS_MODULE, + .open = gr_dfs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void gr_dfs_create(struct gr_udc *dev) +{ + const char *name = "gr_udc_state"; + + dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), NULL); + dev->dfs_state = debugfs_create_file(name, 0444, dev->dfs_root, dev, + &gr_dfs_fops); +} + +static void gr_dfs_delete(struct gr_udc *dev) +{ + /* Handles NULL and ERR pointers internally */ + debugfs_remove(dev->dfs_state); + debugfs_remove(dev->dfs_root); +} + +#else /* !CONFIG_USB_GADGET_DEBUG_FS */ + +static void gr_dfs_create(struct gr_udc *dev) {} +static void gr_dfs_delete(struct gr_udc *dev) {} + +#endif /* CONFIG_USB_GADGET_DEBUG_FS */ + +/* ---------------------------------------------------------------------- */ +/* DMA and request handling */ + +/* Allocates a new struct gr_dma_desc, sets paddr and zeroes the rest */ +static struct gr_dma_desc *gr_alloc_dma_desc(struct gr_ep *ep, gfp_t gfp_flags) +{ + dma_addr_t paddr; + struct gr_dma_desc *dma_desc; + + dma_desc = dma_pool_alloc(ep->dev->desc_pool, gfp_flags, &paddr); + if (!dma_desc) { + dev_err(ep->dev->dev, "Could not allocate from DMA pool\n"); + return NULL; + } + + memset(dma_desc, 0, sizeof(*dma_desc)); + dma_desc->paddr = paddr; + + return dma_desc; +} + +static inline void gr_free_dma_desc(struct gr_udc *dev, + struct gr_dma_desc *desc) +{ + dma_pool_free(dev->desc_pool, desc, (dma_addr_t)desc->paddr); +} + +/* Frees the chain of struct gr_dma_desc for the given request */ +static void gr_free_dma_desc_chain(struct gr_udc *dev, struct gr_request *req) +{ + struct gr_dma_desc *desc; + struct gr_dma_desc *next; + + next = req->first_desc; + if (!next) + return; + + do { + desc = next; + next = desc->next_desc; + gr_free_dma_desc(dev, desc); + } while (desc != req->last_desc); + + req->first_desc = NULL; + req->curr_desc = NULL; + req->last_desc = NULL; +} + +static void gr_ep0_setup(struct gr_udc *dev, struct gr_request *req); + +/* + * Frees allocated resources and calls the appropriate completion function/setup + * package handler for a finished request. + * + * Must be called with dev->lock held and irqs disabled. + */ +static void gr_finish_request(struct gr_ep *ep, struct gr_request *req, + int status) + __releases(&dev->lock) + __acquires(&dev->lock) +{ + struct gr_udc *dev; + + list_del_init(&req->queue); + + if (likely(req->req.status == -EINPROGRESS)) + req->req.status = status; + else + status = req->req.status; + + dev = ep->dev; + usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in); + gr_free_dma_desc_chain(dev, req); + + if (ep->is_in) /* For OUT, actual gets updated bit by bit */ + req->req.actual = req->req.length; + + if (!status) { + if (ep->is_in) + gr_dbgprint_request("SENT", ep, req); + else + gr_dbgprint_request("RECV", ep, req); + } + + /* Prevent changes to ep->queue during callback */ + ep->callback = 1; + if (req == dev->ep0reqo && !status) { + if (req->setup) + gr_ep0_setup(dev, req); + else + dev_err(dev->dev, + "Unexpected non setup packet on ep0in\n"); + } else if (req->req.complete) { + spin_unlock(&dev->lock); + + req->req.complete(&ep->ep, &req->req); + + spin_lock(&dev->lock); + } + ep->callback = 0; +} + +static struct usb_request *gr_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) +{ + struct gr_request *req; + + req = kzalloc(sizeof(*req), gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +/* + * Starts DMA for endpoint ep if there are requests in the queue. + * + * Must be called with dev->lock held and with !ep->stopped. + */ +static void gr_start_dma(struct gr_ep *ep) +{ + struct gr_request *req; + u32 dmactrl; + + if (list_empty(&ep->queue)) { + ep->dma_start = 0; + return; + } + + req = list_first_entry(&ep->queue, struct gr_request, queue); + + /* A descriptor should already have been allocated */ + BUG_ON(!req->curr_desc); + + wmb(); /* Make sure all is settled before handing it over to DMA */ + + /* Set the descriptor pointer in the hardware */ + gr_write32(&ep->regs->dmaaddr, req->curr_desc->paddr); + + /* Announce available descriptors */ + dmactrl = gr_read32(&ep->regs->dmactrl); + gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_DA); + + ep->dma_start = 1; +} + +/* + * Finishes the first request in the ep's queue and, if available, starts the + * next request in queue. + * + * Must be called with dev->lock held, irqs disabled and with !ep->stopped. + */ +static void gr_dma_advance(struct gr_ep *ep, int status) +{ + struct gr_request *req; + + req = list_first_entry(&ep->queue, struct gr_request, queue); + gr_finish_request(ep, req, status); + gr_start_dma(ep); /* Regardless of ep->dma_start */ +} + +/* + * Abort DMA for an endpoint. Sets the abort DMA bit which causes an ongoing DMA + * transfer to be canceled and clears GR_DMACTRL_DA. + * + * Must be called with dev->lock held. + */ +static void gr_abort_dma(struct gr_ep *ep) +{ + u32 dmactrl; + + dmactrl = gr_read32(&ep->regs->dmactrl); + gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_AD); +} + +/* + * Allocates and sets up a struct gr_dma_desc and putting it on the descriptor + * chain. + * + * Size is not used for OUT endpoints. Hardware can not be instructed to handle + * smaller buffer than MAXPL in the OUT direction. + */ +static int gr_add_dma_desc(struct gr_ep *ep, struct gr_request *req, + dma_addr_t data, unsigned size, gfp_t gfp_flags) +{ + struct gr_dma_desc *desc; + + desc = gr_alloc_dma_desc(ep, gfp_flags); + if (!desc) + return -ENOMEM; + + desc->data = data; + if (ep->is_in) + desc->ctrl = + (GR_DESC_IN_CTRL_LEN_MASK & size) | GR_DESC_IN_CTRL_EN; + else + desc->ctrl = GR_DESC_OUT_CTRL_IE; + + if (!req->first_desc) { + req->first_desc = desc; + req->curr_desc = desc; + } else { + req->last_desc->next_desc = desc; + req->last_desc->next = desc->paddr; + req->last_desc->ctrl |= GR_DESC_OUT_CTRL_NX; + } + req->last_desc = desc; + + return 0; +} + +/* + * Sets up a chain of struct gr_dma_descriptors pointing to buffers that + * together covers req->req.length bytes of the buffer at DMA address + * req->req.dma for the OUT direction. + * + * The first descriptor in the chain is enabled, the rest disabled. The + * interrupt handler will later enable them one by one when needed so we can + * find out when the transfer is finished. For OUT endpoints, all descriptors + * therefore generate interrutps. + */ +static int gr_setup_out_desc_list(struct gr_ep *ep, struct gr_request *req, + gfp_t gfp_flags) +{ + u16 bytes_left; /* Bytes left to provide descriptors for */ + u16 bytes_used; /* Bytes accommodated for */ + int ret = 0; + + req->first_desc = NULL; /* Signals that no allocation is done yet */ + bytes_left = req->req.length; + bytes_used = 0; + while (bytes_left > 0) { + dma_addr_t start = req->req.dma + bytes_used; + u16 size = min(bytes_left, ep->bytes_per_buffer); + + /* Should not happen however - gr_queue stops such lengths */ + if (size < ep->bytes_per_buffer) + dev_warn(ep->dev->dev, + "Buffer overrun risk: %u < %u bytes/buffer\n", + size, ep->bytes_per_buffer); + + ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); + if (ret) + goto alloc_err; + + bytes_left -= size; + bytes_used += size; + } + + req->first_desc->ctrl |= GR_DESC_OUT_CTRL_EN; + + return 0; + +alloc_err: + gr_free_dma_desc_chain(ep->dev, req); + + return ret; +} + +/* + * Sets up a chain of struct gr_dma_descriptors pointing to buffers that + * together covers req->req.length bytes of the buffer at DMA address + * req->req.dma for the IN direction. + * + * When more data is provided than the maximum payload size, the hardware splits + * this up into several payloads automatically. Moreover, ep->bytes_per_buffer + * is always set to a multiple of the maximum payload (restricted to the valid + * number of maximum payloads during high bandwidth isochronous or interrupt + * transfers) + * + * All descriptors are enabled from the beginning and we only generate an + * interrupt for the last one indicating that the entire request has been pushed + * to hardware. + */ +static int gr_setup_in_desc_list(struct gr_ep *ep, struct gr_request *req, + gfp_t gfp_flags) +{ + u16 bytes_left; /* Bytes left in req to provide descriptors for */ + u16 bytes_used; /* Bytes in req accommodated for */ + int ret = 0; + + req->first_desc = NULL; /* Signals that no allocation is done yet */ + bytes_left = req->req.length; + bytes_used = 0; + do { /* Allow for zero length packets */ + dma_addr_t start = req->req.dma + bytes_used; + u16 size = min(bytes_left, ep->bytes_per_buffer); + + ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); + if (ret) + goto alloc_err; + + bytes_left -= size; + bytes_used += size; + } while (bytes_left > 0); + + /* + * Send an extra zero length packet to indicate that no more data is + * available when req->req.zero is set and the data length is even + * multiples of ep->ep.maxpacket. + */ + if (req->req.zero && (req->req.length % ep->ep.maxpacket == 0)) { + ret = gr_add_dma_desc(ep, req, 0, 0, gfp_flags); + if (ret) + goto alloc_err; + } + + /* + * For IN packets we only want to know when the last packet has been + * transmitted (not just put into internal buffers). + */ + req->last_desc->ctrl |= GR_DESC_IN_CTRL_PI; + + return 0; + +alloc_err: + gr_free_dma_desc_chain(ep->dev, req); + + return ret; +} + +/* Must be called with dev->lock held */ +static int gr_queue(struct gr_ep *ep, struct gr_request *req, gfp_t gfp_flags) +{ + struct gr_udc *dev = ep->dev; + int ret; + + if (unlikely(!ep->ep.desc && ep->num != 0)) { + dev_err(dev->dev, "No ep descriptor for %s\n", ep->ep.name); + return -EINVAL; + } + + if (unlikely(!req->req.buf || !list_empty(&req->queue))) { + dev_err(dev->dev, + "Invalid request for %s: buf=%p list_empty=%d\n", + ep->ep.name, req->req.buf, list_empty(&req->queue)); + return -EINVAL; + } + + /* + * The DMA controller can not handle smaller OUT buffers than + * maxpacket. It could lead to buffer overruns if unexpectedly long + * packet are received. + */ + if (!ep->is_in && (req->req.length % ep->ep.maxpacket) != 0) { + dev_err(dev->dev, + "OUT request length %d is not multiple of maxpacket\n", + req->req.length); + return -EMSGSIZE; + } + + if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) { + dev_err(dev->dev, "-ESHUTDOWN"); + return -ESHUTDOWN; + } + + /* Can't touch registers when suspended */ + if (dev->ep0state == GR_EP0_SUSPEND) { + dev_err(dev->dev, "-EBUSY"); + return -EBUSY; + } + + /* Set up DMA mapping in case the caller didn't */ + ret = usb_gadget_map_request(&dev->gadget, &req->req, ep->is_in); + if (ret) { + dev_err(dev->dev, "usb_gadget_map_request"); + return ret; + } + + if (ep->is_in) + ret = gr_setup_in_desc_list(ep, req, gfp_flags); + else + ret = gr_setup_out_desc_list(ep, req, gfp_flags); + if (ret) + return ret; + + req->req.status = -EINPROGRESS; + req->req.actual = 0; + list_add_tail(&req->queue, &ep->queue); + + /* Start DMA if not started, otherwise interrupt handler handles it */ + if (!ep->dma_start && likely(!ep->stopped)) + gr_start_dma(ep); + + return 0; +} + +/* + * Queue a request from within the driver. + * + * Must be called with dev->lock held. + */ +static inline int gr_queue_int(struct gr_ep *ep, struct gr_request *req, + gfp_t gfp_flags) +{ + if (ep->is_in) + gr_dbgprint_request("RESP", ep, req); + + return gr_queue(ep, req, gfp_flags); +} + +/* ---------------------------------------------------------------------- */ +/* General helper functions */ + +/* + * Dequeue ALL requests. + * + * Must be called with dev->lock held and irqs disabled. + */ +static void gr_ep_nuke(struct gr_ep *ep) +{ + struct gr_request *req; + + ep->stopped = 1; + ep->dma_start = 0; + gr_abort_dma(ep); + + while (!list_empty(&ep->queue)) { + req = list_first_entry(&ep->queue, struct gr_request, queue); + gr_finish_request(ep, req, -ESHUTDOWN); + } +} + +/* + * Reset the hardware state of this endpoint. + * + * Must be called with dev->lock held. + */ +static void gr_ep_reset(struct gr_ep *ep) +{ + gr_write32(&ep->regs->epctrl, 0); + gr_write32(&ep->regs->dmactrl, 0); + + ep->ep.maxpacket = MAX_CTRL_PL_SIZE; + ep->ep.desc = NULL; + ep->stopped = 1; + ep->dma_start = 0; +} + +/* + * Generate STALL on ep0in/out. + * + * Must be called with dev->lock held. + */ +static void gr_control_stall(struct gr_udc *dev) +{ + u32 epctrl; + + epctrl = gr_read32(&dev->epo[0].regs->epctrl); + gr_write32(&dev->epo[0].regs->epctrl, epctrl | GR_EPCTRL_CS); + epctrl = gr_read32(&dev->epi[0].regs->epctrl); + gr_write32(&dev->epi[0].regs->epctrl, epctrl | GR_EPCTRL_CS); + + dev->ep0state = GR_EP0_STALL; +} + +/* + * Halts, halts and wedges, or clears halt for an endpoint. + * + * Must be called with dev->lock held. + */ +static int gr_ep_halt_wedge(struct gr_ep *ep, int halt, int wedge, int fromhost) +{ + u32 epctrl; + int retval = 0; + + if (ep->num && !ep->ep.desc) + return -EINVAL; + + if (ep->num && ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) + return -EOPNOTSUPP; + + /* Never actually halt ep0, and therefore never clear halt for ep0 */ + if (!ep->num) { + if (halt && !fromhost) { + /* ep0 halt from gadget - generate protocol stall */ + gr_control_stall(ep->dev); + dev_dbg(ep->dev->dev, "EP: stall ep0\n"); + return 0; + } + return -EINVAL; + } + + dev_dbg(ep->dev->dev, "EP: %s halt %s\n", + (halt ? (wedge ? "wedge" : "set") : "clear"), ep->ep.name); + + epctrl = gr_read32(&ep->regs->epctrl); + if (halt) { + /* Set HALT */ + gr_write32(&ep->regs->epctrl, epctrl | GR_EPCTRL_EH); + ep->stopped = 1; + if (wedge) + ep->wedged = 1; + } else { + gr_write32(&ep->regs->epctrl, epctrl & ~GR_EPCTRL_EH); + ep->stopped = 0; + ep->wedged = 0; + + /* Things might have been queued up in the meantime */ + if (!ep->dma_start) + gr_start_dma(ep); + } + + return retval; +} + +/* Must be called with dev->lock held */ +static inline void gr_set_ep0state(struct gr_udc *dev, enum gr_ep0state value) +{ + if (dev->ep0state != value) + dev_vdbg(dev->dev, "STATE: ep0state=%s\n", + gr_ep0state_string(value)); + dev->ep0state = value; +} + +/* + * Should only be called when endpoints can not generate interrupts. + * + * Must be called with dev->lock held. + */ +static void gr_disable_interrupts_and_pullup(struct gr_udc *dev) +{ + gr_write32(&dev->regs->control, 0); + wmb(); /* Make sure that we do not deny one of our interrupts */ + dev->irq_enabled = 0; +} + +/* + * Stop all device activity and disable data line pullup. + * + * Must be called with dev->lock held and irqs disabled. + */ +static void gr_stop_activity(struct gr_udc *dev) +{ + struct gr_ep *ep; + + list_for_each_entry(ep, &dev->ep_list, ep_list) + gr_ep_nuke(ep); + + gr_disable_interrupts_and_pullup(dev); + + gr_set_ep0state(dev, GR_EP0_DISCONNECT); + usb_gadget_set_state(&dev->gadget, USB_STATE_NOTATTACHED); +} + +/* ---------------------------------------------------------------------- */ +/* ep0 setup packet handling */ + +static void gr_ep0_testmode_complete(struct usb_ep *_ep, + struct usb_request *_req) +{ + struct gr_ep *ep; + struct gr_udc *dev; + u32 control; + + ep = container_of(_ep, struct gr_ep, ep); + dev = ep->dev; + + spin_lock(&dev->lock); + + control = gr_read32(&dev->regs->control); + control |= GR_CONTROL_TM | (dev->test_mode << GR_CONTROL_TS_POS); + gr_write32(&dev->regs->control, control); + + spin_unlock(&dev->lock); +} + +static void gr_ep0_dummy_complete(struct usb_ep *_ep, struct usb_request *_req) +{ + /* Nothing needs to be done here */ +} + +/* + * Queue a response on ep0in. + * + * Must be called with dev->lock held. + */ +static int gr_ep0_respond(struct gr_udc *dev, u8 *buf, int length, + void (*complete)(struct usb_ep *ep, + struct usb_request *req)) +{ + u8 *reqbuf = dev->ep0reqi->req.buf; + int status; + int i; + + for (i = 0; i < length; i++) + reqbuf[i] = buf[i]; + dev->ep0reqi->req.length = length; + dev->ep0reqi->req.complete = complete; + + status = gr_queue_int(&dev->epi[0], dev->ep0reqi, GFP_ATOMIC); + if (status < 0) + dev_err(dev->dev, + "Could not queue ep0in setup response: %d\n", status); + + return status; +} + +/* + * Queue a 2 byte response on ep0in. + * + * Must be called with dev->lock held. + */ +static inline int gr_ep0_respond_u16(struct gr_udc *dev, u16 response) +{ + __le16 le_response = cpu_to_le16(response); + + return gr_ep0_respond(dev, (u8 *)&le_response, 2, + gr_ep0_dummy_complete); +} + +/* + * Queue a ZLP response on ep0in. + * + * Must be called with dev->lock held. + */ +static inline int gr_ep0_respond_empty(struct gr_udc *dev) +{ + return gr_ep0_respond(dev, NULL, 0, gr_ep0_dummy_complete); +} + +/* + * This is run when a SET_ADDRESS request is received. First writes + * the new address to the control register which is updated internally + * when the next IN packet is ACKED. + * + * Must be called with dev->lock held. + */ +static void gr_set_address(struct gr_udc *dev, u8 address) +{ + u32 control; + + control = gr_read32(&dev->regs->control) & ~GR_CONTROL_UA_MASK; + control |= (address << GR_CONTROL_UA_POS) & GR_CONTROL_UA_MASK; + control |= GR_CONTROL_SU; + gr_write32(&dev->regs->control, control); +} + +/* + * Returns negative for STALL, 0 for successful handling and positive for + * delegation. + * + * Must be called with dev->lock held. + */ +static int gr_device_request(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index) +{ + u16 response; + u8 test; + + switch (request) { + case USB_REQ_SET_ADDRESS: + dev_dbg(dev->dev, "STATUS: address %d\n", value & 0xff); + gr_set_address(dev, value & 0xff); + if (value) + usb_gadget_set_state(&dev->gadget, USB_STATE_ADDRESS); + else + usb_gadget_set_state(&dev->gadget, USB_STATE_DEFAULT); + return gr_ep0_respond_empty(dev); + + case USB_REQ_GET_STATUS: + /* Self powered | remote wakeup */ + response = 0x0001 | (dev->remote_wakeup ? 0x0002 : 0); + return gr_ep0_respond_u16(dev, response); + + case USB_REQ_SET_FEATURE: + switch (value) { + case USB_DEVICE_REMOTE_WAKEUP: + /* Allow remote wakeup */ + dev->remote_wakeup = 1; + return gr_ep0_respond_empty(dev); + + case USB_DEVICE_TEST_MODE: + /* The hardware does not support TEST_FORCE_EN */ + test = index >> 8; + if (test >= TEST_J && test <= TEST_PACKET) { + dev->test_mode = test; + return gr_ep0_respond(dev, NULL, 0, + gr_ep0_testmode_complete); + } + } + break; + + case USB_REQ_CLEAR_FEATURE: + switch (value) { + case USB_DEVICE_REMOTE_WAKEUP: + /* Disallow remote wakeup */ + dev->remote_wakeup = 0; + return gr_ep0_respond_empty(dev); + } + break; + } + + return 1; /* Delegate the rest */ +} + +/* + * Returns negative for STALL, 0 for successful handling and positive for + * delegation. + * + * Must be called with dev->lock held. + */ +static int gr_interface_request(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index) +{ + if (dev->gadget.state != USB_STATE_CONFIGURED) + return -1; + + /* + * Should return STALL for invalid interfaces, but udc driver does not + * know anything about that. However, many gadget drivers do not handle + * GET_STATUS so we need to take care of that. + */ + + switch (request) { + case USB_REQ_GET_STATUS: + return gr_ep0_respond_u16(dev, 0x0000); + + case USB_REQ_SET_FEATURE: + case USB_REQ_CLEAR_FEATURE: + /* + * No possible valid standard requests. Still let gadget drivers + * have a go at it. + */ + break; + } + + return 1; /* Delegate the rest */ +} + +/* + * Returns negative for STALL, 0 for successful handling and positive for + * delegation. + * + * Must be called with dev->lock held. + */ +static int gr_endpoint_request(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index) +{ + struct gr_ep *ep; + int status; + int halted; + u8 epnum = index & USB_ENDPOINT_NUMBER_MASK; + u8 is_in = index & USB_ENDPOINT_DIR_MASK; + + if ((is_in && epnum >= dev->nepi) || (!is_in && epnum >= dev->nepo)) + return -1; + + if (dev->gadget.state != USB_STATE_CONFIGURED && epnum != 0) + return -1; + + ep = (is_in ? &dev->epi[epnum] : &dev->epo[epnum]); + + switch (request) { + case USB_REQ_GET_STATUS: + halted = gr_read32(&ep->regs->epctrl) & GR_EPCTRL_EH; + return gr_ep0_respond_u16(dev, halted ? 0x0001 : 0); + + case USB_REQ_SET_FEATURE: + switch (value) { + case USB_ENDPOINT_HALT: + status = gr_ep_halt_wedge(ep, 1, 0, 1); + if (status >= 0) + status = gr_ep0_respond_empty(dev); + return status; + } + break; + + case USB_REQ_CLEAR_FEATURE: + switch (value) { + case USB_ENDPOINT_HALT: + if (ep->wedged) + return -1; + status = gr_ep_halt_wedge(ep, 0, 0, 1); + if (status >= 0) + status = gr_ep0_respond_empty(dev); + return status; + } + break; + } + + return 1; /* Delegate the rest */ +} + +/* Must be called with dev->lock held */ +static void gr_ep0out_requeue(struct gr_udc *dev) +{ + int ret = gr_queue_int(&dev->epo[0], dev->ep0reqo, GFP_ATOMIC); + + if (ret) + dev_err(dev->dev, "Could not queue ep0out setup request: %d\n", + ret); +} + +/* + * The main function dealing with setup requests on ep0. + * + * Must be called with dev->lock held and irqs disabled + */ +static void gr_ep0_setup(struct gr_udc *dev, struct gr_request *req) + __releases(&dev->lock) + __acquires(&dev->lock) +{ + union { + struct usb_ctrlrequest ctrl; + u8 raw[8]; + u32 word[2]; + } u; + u8 type; + u8 request; + u16 value; + u16 index; + u16 length; + int i; + int status; + + /* Restore from ep0 halt */ + if (dev->ep0state == GR_EP0_STALL) { + gr_set_ep0state(dev, GR_EP0_SETUP); + if (!req->req.actual) + goto out; + } + + if (dev->ep0state == GR_EP0_ISTATUS) { + gr_set_ep0state(dev, GR_EP0_SETUP); + if (req->req.actual > 0) + dev_dbg(dev->dev, + "Unexpected setup packet at state %s\n", + gr_ep0state_string(GR_EP0_ISTATUS)); + else + goto out; /* Got expected ZLP */ + } else if (dev->ep0state != GR_EP0_SETUP) { + dev_info(dev->dev, + "Unexpected ep0out request at state %s - stalling\n", + gr_ep0state_string(dev->ep0state)); + gr_control_stall(dev); + gr_set_ep0state(dev, GR_EP0_SETUP); + goto out; + } else if (!req->req.actual) { + dev_dbg(dev->dev, "Unexpected ZLP at state %s\n", + gr_ep0state_string(dev->ep0state)); + goto out; + } + + /* Handle SETUP packet */ + for (i = 0; i < req->req.actual; i++) + u.raw[i] = ((u8 *)req->req.buf)[i]; + + type = u.ctrl.bRequestType; + request = u.ctrl.bRequest; + value = le16_to_cpu(u.ctrl.wValue); + index = le16_to_cpu(u.ctrl.wIndex); + length = le16_to_cpu(u.ctrl.wLength); + + gr_dbgprint_devreq(dev, type, request, value, index, length); + + /* Check for data stage */ + if (length) { + if (type & USB_DIR_IN) + gr_set_ep0state(dev, GR_EP0_IDATA); + else + gr_set_ep0state(dev, GR_EP0_ODATA); + } + + status = 1; /* Positive status flags delegation */ + if ((type & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (type & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + status = gr_device_request(dev, type, request, + value, index); + break; + case USB_RECIP_ENDPOINT: + status = gr_endpoint_request(dev, type, request, + value, index); + break; + case USB_RECIP_INTERFACE: + status = gr_interface_request(dev, type, request, + value, index); + break; + } + } + + if (status > 0) { + spin_unlock(&dev->lock); + + dev_vdbg(dev->dev, "DELEGATE\n"); + status = dev->driver->setup(&dev->gadget, &u.ctrl); + + spin_lock(&dev->lock); + } + + /* Generate STALL on both ep0out and ep0in if requested */ + if (unlikely(status < 0)) { + dev_vdbg(dev->dev, "STALL\n"); + gr_control_stall(dev); + } + + if ((type & USB_TYPE_MASK) == USB_TYPE_STANDARD && + request == USB_REQ_SET_CONFIGURATION) { + if (!value) { + dev_dbg(dev->dev, "STATUS: deconfigured\n"); + usb_gadget_set_state(&dev->gadget, USB_STATE_ADDRESS); + } else if (status >= 0) { + /* Not configured unless gadget OK:s it */ + dev_dbg(dev->dev, "STATUS: configured: %d\n", value); + usb_gadget_set_state(&dev->gadget, + USB_STATE_CONFIGURED); + } + } + + /* Get ready for next stage */ + if (dev->ep0state == GR_EP0_ODATA) + gr_set_ep0state(dev, GR_EP0_OSTATUS); + else if (dev->ep0state == GR_EP0_IDATA) + gr_set_ep0state(dev, GR_EP0_ISTATUS); + else + gr_set_ep0state(dev, GR_EP0_SETUP); + +out: + gr_ep0out_requeue(dev); +} + +/* ---------------------------------------------------------------------- */ +/* VBUS and USB reset handling */ + +/* Must be called with dev->lock held and irqs disabled */ +static void gr_vbus_connected(struct gr_udc *dev, u32 status) +{ + u32 control; + + dev->gadget.speed = GR_SPEED(status); + usb_gadget_set_state(&dev->gadget, USB_STATE_POWERED); + + /* Turn on full interrupts and pullup */ + control = (GR_CONTROL_SI | GR_CONTROL_UI | GR_CONTROL_VI | + GR_CONTROL_SP | GR_CONTROL_EP); + gr_write32(&dev->regs->control, control); +} + +/* Must be called with dev->lock held */ +static void gr_enable_vbus_detect(struct gr_udc *dev) +{ + u32 status; + + dev->irq_enabled = 1; + wmb(); /* Make sure we do not ignore an interrupt */ + gr_write32(&dev->regs->control, GR_CONTROL_VI); + + /* Take care of the case we are already plugged in at this point */ + status = gr_read32(&dev->regs->status); + if (status & GR_STATUS_VB) + gr_vbus_connected(dev, status); +} + +/* Must be called with dev->lock held and irqs disabled */ +static void gr_vbus_disconnected(struct gr_udc *dev) +{ + gr_stop_activity(dev); + + /* Report disconnect */ + if (dev->driver && dev->driver->disconnect) { + spin_unlock(&dev->lock); + + dev->driver->disconnect(&dev->gadget); + + spin_lock(&dev->lock); + } + + gr_enable_vbus_detect(dev); +} + +/* Must be called with dev->lock held and irqs disabled */ +static void gr_udc_usbreset(struct gr_udc *dev, u32 status) +{ + gr_set_address(dev, 0); + gr_set_ep0state(dev, GR_EP0_SETUP); + usb_gadget_set_state(&dev->gadget, USB_STATE_DEFAULT); + dev->gadget.speed = GR_SPEED(status); + + gr_ep_nuke(&dev->epo[0]); + gr_ep_nuke(&dev->epi[0]); + dev->epo[0].stopped = 0; + dev->epi[0].stopped = 0; + gr_ep0out_requeue(dev); +} + +/* ---------------------------------------------------------------------- */ +/* Irq handling */ + +/* + * Handles interrupts from in endpoints. Returns whether something was handled. + * + * Must be called with dev->lock held, irqs disabled and with !ep->stopped. + */ +static int gr_handle_in_ep(struct gr_ep *ep) +{ + struct gr_request *req; + + req = list_first_entry(&ep->queue, struct gr_request, queue); + if (!req->last_desc) + return 0; + + if (ACCESS_ONCE(req->last_desc->ctrl) & GR_DESC_IN_CTRL_EN) + return 0; /* Not put in hardware buffers yet */ + + if (gr_read32(&ep->regs->epstat) & (GR_EPSTAT_B1 | GR_EPSTAT_B0)) + return 0; /* Not transmitted yet, still in hardware buffers */ + + /* Write complete */ + gr_dma_advance(ep, 0); + + return 1; +} + +/* + * Handles interrupts from out endpoints. Returns whether something was handled. + * + * Must be called with dev->lock held, irqs disabled and with !ep->stopped. + */ +static int gr_handle_out_ep(struct gr_ep *ep) +{ + u32 ep_dmactrl; + u32 ctrl; + u16 len; + struct gr_request *req; + struct gr_udc *dev = ep->dev; + + req = list_first_entry(&ep->queue, struct gr_request, queue); + if (!req->curr_desc) + return 0; + + ctrl = ACCESS_ONCE(req->curr_desc->ctrl); + if (ctrl & GR_DESC_OUT_CTRL_EN) + return 0; /* Not received yet */ + + /* Read complete */ + len = ctrl & GR_DESC_OUT_CTRL_LEN_MASK; + req->req.actual += len; + if (ctrl & GR_DESC_OUT_CTRL_SE) + req->setup = 1; + + if (len < ep->ep.maxpacket || req->req.actual == req->req.length) { + /* Short packet or the expected size - we are done */ + + if ((ep == &dev->epo[0]) && (dev->ep0state == GR_EP0_OSTATUS)) { + /* + * Send a status stage ZLP to ack the DATA stage in the + * OUT direction. This needs to be done before + * gr_dma_advance as that can lead to a call to + * ep0_setup that can change dev->ep0state. + */ + gr_ep0_respond_empty(dev); + gr_set_ep0state(dev, GR_EP0_SETUP); + } + + gr_dma_advance(ep, 0); + } else { + /* Not done yet. Enable the next descriptor to receive more. */ + req->curr_desc = req->curr_desc->next_desc; + req->curr_desc->ctrl |= GR_DESC_OUT_CTRL_EN; + + ep_dmactrl = gr_read32(&ep->regs->dmactrl); + gr_write32(&ep->regs->dmactrl, ep_dmactrl | GR_DMACTRL_DA); + } + + return 1; +} + +/* + * Handle state changes. Returns whether something was handled. + * + * Must be called with dev->lock held and irqs disabled. + */ +static int gr_handle_state_changes(struct gr_udc *dev) +{ + u32 status = gr_read32(&dev->regs->status); + int handled = 0; + int powstate = !(dev->gadget.state == USB_STATE_NOTATTACHED || + dev->gadget.state == USB_STATE_ATTACHED); + + /* VBUS valid detected */ + if (!powstate && (status & GR_STATUS_VB)) { + dev_dbg(dev->dev, "STATUS: vbus valid detected\n"); + gr_vbus_connected(dev, status); + handled = 1; + } + + /* Disconnect */ + if (powstate && !(status & GR_STATUS_VB)) { + dev_dbg(dev->dev, "STATUS: vbus invalid detected\n"); + gr_vbus_disconnected(dev); + handled = 1; + } + + /* USB reset detected */ + if (status & GR_STATUS_UR) { + dev_dbg(dev->dev, "STATUS: USB reset - speed is %s\n", + GR_SPEED_STR(status)); + gr_write32(&dev->regs->status, GR_STATUS_UR); + gr_udc_usbreset(dev, status); + handled = 1; + } + + /* Speed change */ + if (dev->gadget.speed != GR_SPEED(status)) { + dev_dbg(dev->dev, "STATUS: USB Speed change to %s\n", + GR_SPEED_STR(status)); + dev->gadget.speed = GR_SPEED(status); + handled = 1; + } + + /* Going into suspend */ + if ((dev->ep0state != GR_EP0_SUSPEND) && !(status & GR_STATUS_SU)) { + dev_dbg(dev->dev, "STATUS: USB suspend\n"); + gr_set_ep0state(dev, GR_EP0_SUSPEND); + dev->suspended_from = dev->gadget.state; + usb_gadget_set_state(&dev->gadget, USB_STATE_SUSPENDED); + + if ((dev->gadget.speed != USB_SPEED_UNKNOWN) && + dev->driver && dev->driver->suspend) { + spin_unlock(&dev->lock); + + dev->driver->suspend(&dev->gadget); + + spin_lock(&dev->lock); + } + handled = 1; + } + + /* Coming out of suspend */ + if ((dev->ep0state == GR_EP0_SUSPEND) && (status & GR_STATUS_SU)) { + dev_dbg(dev->dev, "STATUS: USB resume\n"); + if (dev->suspended_from == USB_STATE_POWERED) + gr_set_ep0state(dev, GR_EP0_DISCONNECT); + else + gr_set_ep0state(dev, GR_EP0_SETUP); + usb_gadget_set_state(&dev->gadget, dev->suspended_from); + + if ((dev->gadget.speed != USB_SPEED_UNKNOWN) && + dev->driver && dev->driver->resume) { + spin_unlock(&dev->lock); + + dev->driver->resume(&dev->gadget); + + spin_lock(&dev->lock); + } + handled = 1; + } + + return handled; +} + +/* Non-interrupt context irq handler */ +static irqreturn_t gr_irq_handler(int irq, void *_dev) +{ + struct gr_udc *dev = _dev; + struct gr_ep *ep; + int handled = 0; + int i; + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + + if (!dev->irq_enabled) + goto out; + + /* + * Check IN ep interrupts. We check these before the OUT eps because + * some gadgets reuse the request that might already be currently + * outstanding and needs to be completed (mainly setup requests). + */ + for (i = 0; i < dev->nepi; i++) { + ep = &dev->epi[i]; + if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) + handled = gr_handle_in_ep(ep) || handled; + } + + /* Check OUT ep interrupts */ + for (i = 0; i < dev->nepo; i++) { + ep = &dev->epo[i]; + if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) + handled = gr_handle_out_ep(ep) || handled; + } + + /* Check status interrupts */ + handled = gr_handle_state_changes(dev) || handled; + + /* + * Check AMBA DMA errors. Only check if we didn't find anything else to + * handle because this shouldn't happen if we did everything right. + */ + if (!handled) { + list_for_each_entry(ep, &dev->ep_list, ep_list) { + if (gr_read32(&ep->regs->dmactrl) & GR_DMACTRL_AE) { + dev_err(dev->dev, + "AMBA Error occurred for %s\n", + ep->ep.name); + handled = 1; + } + } + } + +out: + spin_unlock_irqrestore(&dev->lock, flags); + + return handled ? IRQ_HANDLED : IRQ_NONE; +} + +/* Interrupt context irq handler */ +static irqreturn_t gr_irq(int irq, void *_dev) +{ + struct gr_udc *dev = _dev; + + if (!dev->irq_enabled) + return IRQ_NONE; + + return IRQ_WAKE_THREAD; +} + +/* ---------------------------------------------------------------------- */ +/* USB ep ops */ + +/* Enable endpoint. Not for ep0in and ep0out that are handled separately. */ +static int gr_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct gr_udc *dev; + struct gr_ep *ep; + u8 mode; + u8 nt; + u16 max; + u16 buffer_size = 0; + u32 epctrl; + + ep = container_of(_ep, struct gr_ep, ep); + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) + return -EINVAL; + + dev = ep->dev; + + /* 'ep0' IN and OUT are reserved */ + if (ep == &dev->epo[0] || ep == &dev->epi[0]) + return -EINVAL; + + if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + /* Make sure we are clear for enabling */ + epctrl = gr_read32(&ep->regs->epctrl); + if (epctrl & GR_EPCTRL_EV) + return -EBUSY; + + /* Check that directions match */ + if (!ep->is_in != !usb_endpoint_dir_in(desc)) + return -EINVAL; + + /* Check ep num */ + if ((!ep->is_in && ep->num >= dev->nepo) || + (ep->is_in && ep->num >= dev->nepi)) + return -EINVAL; + + if (usb_endpoint_xfer_control(desc)) { + mode = 0; + } else if (usb_endpoint_xfer_isoc(desc)) { + mode = 1; + } else if (usb_endpoint_xfer_bulk(desc)) { + mode = 2; + } else if (usb_endpoint_xfer_int(desc)) { + mode = 3; + } else { + dev_err(dev->dev, "Unknown transfer type for %s\n", + ep->ep.name); + return -EINVAL; + } + + /* + * Bits 10-0 set the max payload. 12-11 set the number of + * additional transactions. + */ + max = 0x7ff & usb_endpoint_maxp(desc); + nt = 0x3 & (usb_endpoint_maxp(desc) >> 11); + buffer_size = GR_BUFFER_SIZE(epctrl); + if (nt && (mode == 0 || mode == 2)) { + dev_err(dev->dev, + "%s mode: multiple trans./microframe not valid\n", + (mode == 2 ? "Bulk" : "Control")); + return -EINVAL; + } else if (nt == 0x3) { + dev_err(dev->dev, + "Invalid value 0x3 for additional trans./microframe\n"); + return -EINVAL; + } else if ((nt + 1) * max > buffer_size) { + dev_err(dev->dev, "Hw buffer size %d < max payload %d * %d\n", + buffer_size, (nt + 1), max); + return -EINVAL; + } else if (max == 0) { + dev_err(dev->dev, "Max payload cannot be set to 0\n"); + return -EINVAL; + } else if (max > ep->ep.maxpacket_limit) { + dev_err(dev->dev, "Requested max payload %d > limit %d\n", + max, ep->ep.maxpacket_limit); + return -EINVAL; + } + + spin_lock(&ep->dev->lock); + + if (!ep->stopped) { + spin_unlock(&ep->dev->lock); + return -EBUSY; + } + + ep->stopped = 0; + ep->wedged = 0; + ep->ep.desc = desc; + ep->ep.maxpacket = max; + ep->dma_start = 0; + + + if (nt) { + /* + * Maximum possible size of all payloads in one microframe + * regardless of direction when using high-bandwidth mode. + */ + ep->bytes_per_buffer = (nt + 1) * max; + } else if (ep->is_in) { + /* + * The biggest multiple of maximum packet size that fits into + * the buffer. The hardware will split up into many packets in + * the IN direction. + */ + ep->bytes_per_buffer = (buffer_size / max) * max; + } else { + /* + * Only single packets will be placed the buffers in the OUT + * direction. + */ + ep->bytes_per_buffer = max; + } + + epctrl = (max << GR_EPCTRL_MAXPL_POS) + | (nt << GR_EPCTRL_NT_POS) + | (mode << GR_EPCTRL_TT_POS) + | GR_EPCTRL_EV; + if (ep->is_in) + epctrl |= GR_EPCTRL_PI; + gr_write32(&ep->regs->epctrl, epctrl); + + gr_write32(&ep->regs->dmactrl, GR_DMACTRL_IE | GR_DMACTRL_AI); + + spin_unlock(&ep->dev->lock); + + dev_dbg(ep->dev->dev, "EP: %s enabled - %s with %d bytes/buffer\n", + ep->ep.name, gr_modestring[mode], ep->bytes_per_buffer); + return 0; +} + +/* Disable endpoint. Not for ep0in and ep0out that are handled separately. */ +static int gr_ep_disable(struct usb_ep *_ep) +{ + struct gr_ep *ep; + struct gr_udc *dev; + unsigned long flags; + + ep = container_of(_ep, struct gr_ep, ep); + if (!_ep || !ep->ep.desc) + return -ENODEV; + + dev = ep->dev; + + /* 'ep0' IN and OUT are reserved */ + if (ep == &dev->epo[0] || ep == &dev->epi[0]) + return -EINVAL; + + if (dev->ep0state == GR_EP0_SUSPEND) + return -EBUSY; + + dev_dbg(ep->dev->dev, "EP: disable %s\n", ep->ep.name); + + spin_lock_irqsave(&dev->lock, flags); + + gr_ep_nuke(ep); + gr_ep_reset(ep); + ep->ep.desc = NULL; + + spin_unlock_irqrestore(&dev->lock, flags); + + return 0; +} + +/* + * Frees a request, but not any DMA buffers associated with it + * (gr_finish_request should already have taken care of that). + */ +static void gr_free_request(struct usb_ep *_ep, struct usb_request *_req) +{ + struct gr_request *req; + + if (!_ep || !_req) + return; + req = container_of(_req, struct gr_request, req); + + /* Leads to memory leak */ + WARN(!list_empty(&req->queue), + "request not dequeued properly before freeing\n"); + + kfree(req); +} + +/* Queue a request from the gadget */ +static int gr_queue_ext(struct usb_ep *_ep, struct usb_request *_req, + gfp_t gfp_flags) +{ + struct gr_ep *ep; + struct gr_request *req; + struct gr_udc *dev; + int ret; + + if (unlikely(!_ep || !_req)) + return -EINVAL; + + ep = container_of(_ep, struct gr_ep, ep); + req = container_of(_req, struct gr_request, req); + dev = ep->dev; + + spin_lock(&ep->dev->lock); + + /* + * The ep0 pointer in the gadget struct is used both for ep0in and + * ep0out. In a data stage in the out direction ep0out needs to be used + * instead of the default ep0in. Completion functions might use + * driver_data, so that needs to be copied as well. + */ + if ((ep == &dev->epi[0]) && (dev->ep0state == GR_EP0_ODATA)) { + ep = &dev->epo[0]; + ep->ep.driver_data = dev->epi[0].ep.driver_data; + } + + if (ep->is_in) + gr_dbgprint_request("EXTERN", ep, req); + + ret = gr_queue(ep, req, GFP_ATOMIC); + + spin_unlock(&ep->dev->lock); + + return ret; +} + +/* Dequeue JUST ONE request */ +static int gr_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct gr_request *req; + struct gr_ep *ep; + struct gr_udc *dev; + int ret = 0; + unsigned long flags; + + ep = container_of(_ep, struct gr_ep, ep); + if (!_ep || !_req || (!ep->ep.desc && ep->num != 0)) + return -EINVAL; + dev = ep->dev; + if (!dev->driver) + return -ESHUTDOWN; + + /* We can't touch (DMA) registers when suspended */ + if (dev->ep0state == GR_EP0_SUSPEND) + return -EBUSY; + + spin_lock_irqsave(&dev->lock, flags); + + /* Make sure it's actually queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + if (&req->req != _req) { + ret = -EINVAL; + goto out; + } + + if (list_first_entry(&ep->queue, struct gr_request, queue) == req) { + /* This request is currently being processed */ + gr_abort_dma(ep); + if (ep->stopped) + gr_finish_request(ep, req, -ECONNRESET); + else + gr_dma_advance(ep, -ECONNRESET); + } else if (!list_empty(&req->queue)) { + /* Not being processed - gr_finish_request dequeues it */ + gr_finish_request(ep, req, -ECONNRESET); + } else { + ret = -EOPNOTSUPP; + } + +out: + spin_unlock_irqrestore(&dev->lock, flags); + + return ret; +} + +/* Helper for gr_set_halt and gr_set_wedge */ +static int gr_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) +{ + int ret; + struct gr_ep *ep; + + if (!_ep) + return -ENODEV; + ep = container_of(_ep, struct gr_ep, ep); + + spin_lock(&ep->dev->lock); + + /* Halting an IN endpoint should fail if queue is not empty */ + if (halt && ep->is_in && !list_empty(&ep->queue)) { + ret = -EAGAIN; + goto out; + } + + ret = gr_ep_halt_wedge(ep, halt, wedge, 0); + +out: + spin_unlock(&ep->dev->lock); + + return ret; +} + +/* Halt endpoint */ +static int gr_set_halt(struct usb_ep *_ep, int halt) +{ + return gr_set_halt_wedge(_ep, halt, 0); +} + +/* Halt and wedge endpoint */ +static int gr_set_wedge(struct usb_ep *_ep) +{ + return gr_set_halt_wedge(_ep, 1, 1); +} + +/* + * Return the total number of bytes currently stored in the internal buffers of + * the endpoint. + */ +static int gr_fifo_status(struct usb_ep *_ep) +{ + struct gr_ep *ep; + u32 epstat; + u32 bytes = 0; + + if (!_ep) + return -ENODEV; + ep = container_of(_ep, struct gr_ep, ep); + + epstat = gr_read32(&ep->regs->epstat); + + if (epstat & GR_EPSTAT_B0) + bytes += (epstat & GR_EPSTAT_B0CNT_MASK) >> GR_EPSTAT_B0CNT_POS; + if (epstat & GR_EPSTAT_B1) + bytes += (epstat & GR_EPSTAT_B1CNT_MASK) >> GR_EPSTAT_B1CNT_POS; + + return bytes; +} + + +/* Empty data from internal buffers of an endpoint. */ +static void gr_fifo_flush(struct usb_ep *_ep) +{ + struct gr_ep *ep; + u32 epctrl; + + if (!_ep) + return; + ep = container_of(_ep, struct gr_ep, ep); + dev_vdbg(ep->dev->dev, "EP: flush fifo %s\n", ep->ep.name); + + spin_lock(&ep->dev->lock); + + epctrl = gr_read32(&ep->regs->epctrl); + epctrl |= GR_EPCTRL_CB; + gr_write32(&ep->regs->epctrl, epctrl); + + spin_unlock(&ep->dev->lock); +} + +static struct usb_ep_ops gr_ep_ops = { + .enable = gr_ep_enable, + .disable = gr_ep_disable, + + .alloc_request = gr_alloc_request, + .free_request = gr_free_request, + + .queue = gr_queue_ext, + .dequeue = gr_dequeue, + + .set_halt = gr_set_halt, + .set_wedge = gr_set_wedge, + .fifo_status = gr_fifo_status, + .fifo_flush = gr_fifo_flush, +}; + +/* ---------------------------------------------------------------------- */ +/* USB Gadget ops */ + +static int gr_get_frame(struct usb_gadget *_gadget) +{ + struct gr_udc *dev; + + if (!_gadget) + return -ENODEV; + dev = container_of(_gadget, struct gr_udc, gadget); + return gr_read32(&dev->regs->status) & GR_STATUS_FN_MASK; +} + +static int gr_wakeup(struct usb_gadget *_gadget) +{ + struct gr_udc *dev; + + if (!_gadget) + return -ENODEV; + dev = container_of(_gadget, struct gr_udc, gadget); + + /* Remote wakeup feature not enabled by host*/ + if (!dev->remote_wakeup) + return -EINVAL; + + spin_lock(&dev->lock); + + gr_write32(&dev->regs->control, + gr_read32(&dev->regs->control) | GR_CONTROL_RW); + + spin_unlock(&dev->lock); + + return 0; +} + +static int gr_pullup(struct usb_gadget *_gadget, int is_on) +{ + struct gr_udc *dev; + u32 control; + + if (!_gadget) + return -ENODEV; + dev = container_of(_gadget, struct gr_udc, gadget); + + spin_lock(&dev->lock); + + control = gr_read32(&dev->regs->control); + if (is_on) + control |= GR_CONTROL_EP; + else + control &= ~GR_CONTROL_EP; + gr_write32(&dev->regs->control, control); + + spin_unlock(&dev->lock); + + return 0; +} + +static int gr_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct gr_udc *dev = to_gr_udc(gadget); + + spin_lock(&dev->lock); + + /* Hook up the driver */ + driver->driver.bus = NULL; + dev->driver = driver; + + /* Get ready for host detection */ + gr_enable_vbus_detect(dev); + + spin_unlock(&dev->lock); + + dev_info(dev->dev, "Started with gadget driver '%s'\n", + driver->driver.name); + + return 0; +} + +static int gr_udc_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct gr_udc *dev = to_gr_udc(gadget); + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + + dev->driver = NULL; + gr_stop_activity(dev); + + spin_unlock_irqrestore(&dev->lock, flags); + + dev_info(dev->dev, "Stopped\n"); + + return 0; +} + +static const struct usb_gadget_ops gr_ops = { + .get_frame = gr_get_frame, + .wakeup = gr_wakeup, + .pullup = gr_pullup, + .udc_start = gr_udc_start, + .udc_stop = gr_udc_stop, + /* Other operations not supported */ +}; + +/* ---------------------------------------------------------------------- */ +/* Module probe, removal and of-matching */ + +static const char * const onames[] = { + "ep0out", "ep1out", "ep2out", "ep3out", "ep4out", "ep5out", + "ep6out", "ep7out", "ep8out", "ep9out", "ep10out", "ep11out", + "ep12out", "ep13out", "ep14out", "ep15out" +}; + +static const char * const inames[] = { + "ep0in", "ep1in", "ep2in", "ep3in", "ep4in", "ep5in", + "ep6in", "ep7in", "ep8in", "ep9in", "ep10in", "ep11in", + "ep12in", "ep13in", "ep14in", "ep15in" +}; + +/* Must be called with dev->lock held */ +static int gr_ep_init(struct gr_udc *dev, int num, int is_in, u32 maxplimit) +{ + struct gr_ep *ep; + struct gr_request *req; + struct usb_request *_req; + void *buf; + + if (is_in) { + ep = &dev->epi[num]; + ep->ep.name = inames[num]; + ep->regs = &dev->regs->epi[num]; + } else { + ep = &dev->epo[num]; + ep->ep.name = onames[num]; + ep->regs = &dev->regs->epo[num]; + } + + gr_ep_reset(ep); + ep->num = num; + ep->is_in = is_in; + ep->dev = dev; + ep->ep.ops = &gr_ep_ops; + INIT_LIST_HEAD(&ep->queue); + + if (num == 0) { + _req = gr_alloc_request(&ep->ep, GFP_ATOMIC); + buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_ATOMIC); + if (!_req || !buf) { + /* possible _req freed by gr_probe via gr_remove */ + return -ENOMEM; + } + + req = container_of(_req, struct gr_request, req); + req->req.buf = buf; + req->req.length = MAX_CTRL_PL_SIZE; + + if (is_in) + dev->ep0reqi = req; /* Complete gets set as used */ + else + dev->ep0reqo = req; /* Completion treated separately */ + + usb_ep_set_maxpacket_limit(&ep->ep, MAX_CTRL_PL_SIZE); + ep->bytes_per_buffer = MAX_CTRL_PL_SIZE; + } else { + usb_ep_set_maxpacket_limit(&ep->ep, (u16)maxplimit); + list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); + } + list_add_tail(&ep->ep_list, &dev->ep_list); + + return 0; +} + +/* Must be called with dev->lock held */ +static int gr_udc_init(struct gr_udc *dev) +{ + struct device_node *np = dev->dev->of_node; + u32 epctrl_val; + u32 dmactrl_val; + int i; + int ret = 0; + u32 bufsize; + + gr_set_address(dev, 0); + + INIT_LIST_HEAD(&dev->gadget.ep_list); + dev->gadget.speed = USB_SPEED_UNKNOWN; + dev->gadget.ep0 = &dev->epi[0].ep; + + INIT_LIST_HEAD(&dev->ep_list); + gr_set_ep0state(dev, GR_EP0_DISCONNECT); + + for (i = 0; i < dev->nepo; i++) { + if (of_property_read_u32_index(np, "epobufsizes", i, &bufsize)) + bufsize = 1024; + ret = gr_ep_init(dev, i, 0, bufsize); + if (ret) + return ret; + } + + for (i = 0; i < dev->nepi; i++) { + if (of_property_read_u32_index(np, "epibufsizes", i, &bufsize)) + bufsize = 1024; + ret = gr_ep_init(dev, i, 1, bufsize); + if (ret) + return ret; + } + + /* Must be disabled by default */ + dev->remote_wakeup = 0; + + /* Enable ep0out and ep0in */ + epctrl_val = (MAX_CTRL_PL_SIZE << GR_EPCTRL_MAXPL_POS) | GR_EPCTRL_EV; + dmactrl_val = GR_DMACTRL_IE | GR_DMACTRL_AI; + gr_write32(&dev->epo[0].regs->epctrl, epctrl_val); + gr_write32(&dev->epi[0].regs->epctrl, epctrl_val | GR_EPCTRL_PI); + gr_write32(&dev->epo[0].regs->dmactrl, dmactrl_val); + gr_write32(&dev->epi[0].regs->dmactrl, dmactrl_val); + + return 0; +} + +static int gr_remove(struct platform_device *pdev) +{ + struct gr_udc *dev = platform_get_drvdata(pdev); + + if (dev->added) + usb_del_gadget_udc(&dev->gadget); /* Shuts everything down */ + if (dev->driver) + return -EBUSY; + + gr_dfs_delete(dev); + if (dev->desc_pool) + dma_pool_destroy(dev->desc_pool); + platform_set_drvdata(pdev, NULL); + + gr_free_request(&dev->epi[0].ep, &dev->ep0reqi->req); + gr_free_request(&dev->epo[0].ep, &dev->ep0reqo->req); + + return 0; +} +static int gr_request_irq(struct gr_udc *dev, int irq) +{ + return devm_request_threaded_irq(dev->dev, irq, gr_irq, gr_irq_handler, + IRQF_SHARED, driver_name, dev); +} + +static int gr_probe(struct platform_device *pdev) +{ + struct gr_udc *dev; + struct resource *res; + struct gr_regs __iomem *regs; + int retval; + u32 status; + + dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + dev->dev = &pdev->dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + regs = devm_ioremap_resource(dev->dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + dev->irq = platform_get_irq(pdev, 0); + if (dev->irq <= 0) { + dev_err(dev->dev, "No irq found\n"); + return -ENODEV; + } + + /* Some core configurations has separate irqs for IN and OUT events */ + dev->irqi = platform_get_irq(pdev, 1); + if (dev->irqi > 0) { + dev->irqo = platform_get_irq(pdev, 2); + if (dev->irqo <= 0) { + dev_err(dev->dev, "Found irqi but not irqo\n"); + return -ENODEV; + } + } else { + dev->irqi = 0; + } + + dev->gadget.name = driver_name; + dev->gadget.max_speed = USB_SPEED_HIGH; + dev->gadget.ops = &gr_ops; + dev->gadget.quirk_ep_out_aligned_size = true; + + spin_lock_init(&dev->lock); + dev->regs = regs; + + platform_set_drvdata(pdev, dev); + + /* Determine number of endpoints and data interface mode */ + status = gr_read32(&dev->regs->status); + dev->nepi = ((status & GR_STATUS_NEPI_MASK) >> GR_STATUS_NEPI_POS) + 1; + dev->nepo = ((status & GR_STATUS_NEPO_MASK) >> GR_STATUS_NEPO_POS) + 1; + + if (!(status & GR_STATUS_DM)) { + dev_err(dev->dev, "Slave mode cores are not supported\n"); + return -ENODEV; + } + + /* --- Effects of the following calls might need explicit cleanup --- */ + + /* Create DMA pool for descriptors */ + dev->desc_pool = dma_pool_create("desc_pool", dev->dev, + sizeof(struct gr_dma_desc), 4, 0); + if (!dev->desc_pool) { + dev_err(dev->dev, "Could not allocate DMA pool"); + return -ENOMEM; + } + + spin_lock(&dev->lock); + + /* Inside lock so that no gadget can use this udc until probe is done */ + retval = usb_add_gadget_udc(dev->dev, &dev->gadget); + if (retval) { + dev_err(dev->dev, "Could not add gadget udc"); + goto out; + } + dev->added = 1; + + retval = gr_udc_init(dev); + if (retval) + goto out; + + gr_dfs_create(dev); + + /* Clear all interrupt enables that might be left on since last boot */ + gr_disable_interrupts_and_pullup(dev); + + retval = gr_request_irq(dev, dev->irq); + if (retval) { + dev_err(dev->dev, "Failed to request irq %d\n", dev->irq); + goto out; + } + + if (dev->irqi) { + retval = gr_request_irq(dev, dev->irqi); + if (retval) { + dev_err(dev->dev, "Failed to request irqi %d\n", + dev->irqi); + goto out; + } + retval = gr_request_irq(dev, dev->irqo); + if (retval) { + dev_err(dev->dev, "Failed to request irqo %d\n", + dev->irqo); + goto out; + } + } + + if (dev->irqi) + dev_info(dev->dev, "regs: %p, irqs %d, %d, %d\n", dev->regs, + dev->irq, dev->irqi, dev->irqo); + else + dev_info(dev->dev, "regs: %p, irq %d\n", dev->regs, dev->irq); + +out: + spin_unlock(&dev->lock); + + if (retval) + gr_remove(pdev); + + return retval; +} + +static struct of_device_id gr_match[] = { + {.name = "GAISLER_USBDC"}, + {.name = "01_021"}, + {}, +}; +MODULE_DEVICE_TABLE(of, gr_match); + +static struct platform_driver gr_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + .of_match_table = gr_match, + }, + .probe = gr_probe, + .remove = gr_remove, +}; +module_platform_driver(gr_driver); + +MODULE_AUTHOR("Aeroflex Gaisler AB."); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/gr_udc.h b/drivers/usb/gadget/gr_udc.h new file mode 100644 index 00000000000..8388897d9ec --- /dev/null +++ b/drivers/usb/gadget/gr_udc.h @@ -0,0 +1,220 @@ +/* + * USB Peripheral Controller driver for Aeroflex Gaisler GRUSBDC. + * + * 2013 (c) Aeroflex Gaisler AB + * + * This driver supports GRUSBDC USB Device Controller cores available in the + * GRLIB VHDL IP core library. + * + * Full documentation of the GRUSBDC core can be found here: + * http://www.gaisler.com/products/grlib/grip.pdf + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Contributors: + * - Andreas Larsson <andreas@gaisler.com> + * - Marko Isomaki + */ + +/* Control registers on the AMBA bus */ + +#define GR_MAXEP 16 /* Max # endpoints for *each* direction */ + +struct gr_epregs { + u32 epctrl; + union { + struct { /* Slave mode*/ + u32 slvctrl; + u32 slvdata; + }; + struct { /* DMA mode*/ + u32 dmactrl; + u32 dmaaddr; + }; + }; + u32 epstat; +}; + +struct gr_regs { + struct gr_epregs epo[GR_MAXEP]; /* 0x000 - 0x0fc */ + struct gr_epregs epi[GR_MAXEP]; /* 0x100 - 0x1fc */ + u32 control; /* 0x200 */ + u32 status; /* 0x204 */ +}; + +#define GR_EPCTRL_BUFSZ_SCALER 8 +#define GR_EPCTRL_BUFSZ_MASK 0xffe00000 +#define GR_EPCTRL_BUFSZ_POS 21 +#define GR_EPCTRL_PI BIT(20) +#define GR_EPCTRL_CB BIT(19) +#define GR_EPCTRL_CS BIT(18) +#define GR_EPCTRL_MAXPL_MASK 0x0003ff80 +#define GR_EPCTRL_MAXPL_POS 7 +#define GR_EPCTRL_NT_MASK 0x00000060 +#define GR_EPCTRL_NT_POS 5 +#define GR_EPCTRL_TT_MASK 0x00000018 +#define GR_EPCTRL_TT_POS 3 +#define GR_EPCTRL_EH BIT(2) +#define GR_EPCTRL_ED BIT(1) +#define GR_EPCTRL_EV BIT(0) + +#define GR_DMACTRL_AE BIT(10) +#define GR_DMACTRL_AD BIT(3) +#define GR_DMACTRL_AI BIT(2) +#define GR_DMACTRL_IE BIT(1) +#define GR_DMACTRL_DA BIT(0) + +#define GR_EPSTAT_PT BIT(29) +#define GR_EPSTAT_PR BIT(29) +#define GR_EPSTAT_B1CNT_MASK 0x1fff0000 +#define GR_EPSTAT_B1CNT_POS 16 +#define GR_EPSTAT_B0CNT_MASK 0x0000fff8 +#define GR_EPSTAT_B0CNT_POS 3 +#define GR_EPSTAT_B1 BIT(2) +#define GR_EPSTAT_B0 BIT(1) +#define GR_EPSTAT_BS BIT(0) + +#define GR_CONTROL_SI BIT(31) +#define GR_CONTROL_UI BIT(30) +#define GR_CONTROL_VI BIT(29) +#define GR_CONTROL_SP BIT(28) +#define GR_CONTROL_FI BIT(27) +#define GR_CONTROL_EP BIT(14) +#define GR_CONTROL_DH BIT(13) +#define GR_CONTROL_RW BIT(12) +#define GR_CONTROL_TS_MASK 0x00000e00 +#define GR_CONTROL_TS_POS 9 +#define GR_CONTROL_TM BIT(8) +#define GR_CONTROL_UA_MASK 0x000000fe +#define GR_CONTROL_UA_POS 1 +#define GR_CONTROL_SU BIT(0) + +#define GR_STATUS_NEPI_MASK 0xf0000000 +#define GR_STATUS_NEPI_POS 28 +#define GR_STATUS_NEPO_MASK 0x0f000000 +#define GR_STATUS_NEPO_POS 24 +#define GR_STATUS_DM BIT(23) +#define GR_STATUS_SU BIT(17) +#define GR_STATUS_UR BIT(16) +#define GR_STATUS_VB BIT(15) +#define GR_STATUS_SP BIT(14) +#define GR_STATUS_AF_MASK 0x00003800 +#define GR_STATUS_AF_POS 11 +#define GR_STATUS_FN_MASK 0x000007ff +#define GR_STATUS_FN_POS 0 + + +#define MAX_CTRL_PL_SIZE 64 /* As per USB standard for full and high speed */ + +/*-------------------------------------------------------------------------*/ + +/* Driver data structures and utilities */ + +struct gr_dma_desc { + u32 ctrl; + u32 data; + u32 next; + + /* These must be last because hw uses the previous three */ + u32 paddr; + struct gr_dma_desc *next_desc; +}; + +#define GR_DESC_OUT_CTRL_SE BIT(17) +#define GR_DESC_OUT_CTRL_IE BIT(15) +#define GR_DESC_OUT_CTRL_NX BIT(14) +#define GR_DESC_OUT_CTRL_EN BIT(13) +#define GR_DESC_OUT_CTRL_LEN_MASK 0x00001fff + +#define GR_DESC_IN_CTRL_MO BIT(18) +#define GR_DESC_IN_CTRL_PI BIT(17) +#define GR_DESC_IN_CTRL_ML BIT(16) +#define GR_DESC_IN_CTRL_IE BIT(15) +#define GR_DESC_IN_CTRL_NX BIT(14) +#define GR_DESC_IN_CTRL_EN BIT(13) +#define GR_DESC_IN_CTRL_LEN_MASK 0x00001fff + +#define GR_DESC_DMAADDR_MASK 0xfffffffc + +struct gr_ep { + struct usb_ep ep; + struct gr_udc *dev; + u16 bytes_per_buffer; + unsigned int dma_start; + struct gr_epregs __iomem *regs; + + unsigned num:8; + unsigned is_in:1; + unsigned stopped:1; + unsigned wedged:1; + unsigned callback:1; + + /* analogous to a host-side qh */ + struct list_head queue; + + struct list_head ep_list; +}; + +struct gr_request { + struct usb_request req; + struct list_head queue; + + /* Chain of dma descriptors */ + struct gr_dma_desc *first_desc; /* First in the chain */ + struct gr_dma_desc *curr_desc; /* Current descriptor */ + struct gr_dma_desc *last_desc; /* Last in the chain */ + + u8 setup; /* Setup packet */ +}; + +enum gr_ep0state { + GR_EP0_DISCONNECT = 0, /* No host */ + GR_EP0_SETUP, /* Between STATUS ack and SETUP report */ + GR_EP0_IDATA, /* IN data stage */ + GR_EP0_ODATA, /* OUT data stage */ + GR_EP0_ISTATUS, /* Status stage after IN data stage */ + GR_EP0_OSTATUS, /* Status stage after OUT data stage */ + GR_EP0_STALL, /* Data or status stages */ + GR_EP0_SUSPEND, /* USB suspend */ +}; + +struct gr_udc { + struct usb_gadget gadget; + struct gr_ep epi[GR_MAXEP]; + struct gr_ep epo[GR_MAXEP]; + struct usb_gadget_driver *driver; + struct dma_pool *desc_pool; + struct device *dev; + + enum gr_ep0state ep0state; + struct gr_request *ep0reqo; + struct gr_request *ep0reqi; + + struct gr_regs __iomem *regs; + int irq; + int irqi; + int irqo; + + unsigned added:1; + unsigned irq_enabled:1; + unsigned remote_wakeup:1; + + u8 test_mode; + + enum usb_device_state suspended_from; + + unsigned int nepi; + unsigned int nepo; + + struct list_head ep_list; + + spinlock_t lock; /* General lock, a.k.a. "dev->lock" in comments */ + + struct dentry *dfs_root; + struct dentry *dfs_state; +}; + +#define to_gr_udc(gadget) (container_of((gadget), struct gr_udc, gadget)) diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c index f888c3ede86..778613eb37a 100644 --- a/drivers/usb/gadget/hid.c +++ b/drivers/usb/gadget/hid.c @@ -15,7 +15,10 @@ #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/list.h> +#include <linux/module.h> +#include <linux/usb/composite.h> +#include "gadget_chips.h" #define DRIVER_DESC "HID Gadget" #define DRIVER_VERSION "2010/03/16" @@ -33,12 +36,6 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ - -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - #include "f_hid.c" @@ -50,6 +47,7 @@ struct hidg_func_node { static LIST_HEAD(hidg_func_list); /*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, @@ -60,9 +58,9 @@ static struct usb_device_descriptor device_desc = { /* .bDeviceClass = USB_CLASS_COMM, */ /* .bDeviceSubClass = 0, */ /* .bDeviceProtocol = 0, */ - .bDeviceClass = 0xEF, - .bDeviceSubClass = 2, - .bDeviceProtocol = 1, + .bDeviceClass = USB_CLASS_PER_INTERFACE, + .bDeviceSubClass = 0, + .bDeviceProtocol = 0, /* .bMaxPacketSize0 = f(hardware) */ /* Vendor and product id can be overridden by module parameters. */ @@ -92,15 +90,10 @@ static const struct usb_descriptor_header *otg_desc[] = { /* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 - -static char manufacturer[50]; - static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", { } /* end of list */ }; @@ -150,7 +143,7 @@ static int __init hid_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; struct list_head *tmp; - int status, gcnum, funcs = 0; + int status, funcs = 0; list_for_each(tmp, &hidg_func_list) funcs++; @@ -163,38 +156,22 @@ static int __init hid_bind(struct usb_composite_dev *cdev) if (status < 0) return status; - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - else - device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); - - /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - /* device descriptor strings: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - status = usb_string_id(cdev); - if (status < 0) - return status; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) return status; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; /* register our configuration */ status = usb_add_config(cdev, &config_driver, do_config); if (status < 0) return status; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); return 0; @@ -208,7 +185,7 @@ static int __exit hid_unbind(struct usb_composite_dev *cdev) static int __init hidg_plat_driver_probe(struct platform_device *pdev) { - struct hidg_func_descriptor *func = pdev->dev.platform_data; + struct hidg_func_descriptor *func = dev_get_platdata(&pdev->dev); struct hidg_func_node *entry; if (!func) { @@ -226,7 +203,7 @@ static int __init hidg_plat_driver_probe(struct platform_device *pdev) return 0; } -static int __devexit hidg_plat_driver_remove(struct platform_device *pdev) +static int hidg_plat_driver_remove(struct platform_device *pdev) { struct hidg_func_node *e, *n; @@ -242,16 +219,17 @@ static int __devexit hidg_plat_driver_remove(struct platform_device *pdev) /****************************** Some noise ******************************/ -static struct usb_composite_driver hidg_driver = { +static __refdata struct usb_composite_driver hidg_driver = { .name = "g_hid", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = hid_bind, .unbind = __exit_p(hid_unbind), }; static struct platform_driver hidg_plat_driver = { - .remove = __devexit_p(hidg_plat_driver_remove), + .remove = hidg_plat_driver_remove, .driver = { .owner = THIS_MODULE, .name = "hidg", @@ -272,7 +250,7 @@ static int __init hidg_init(void) if (status < 0) return status; - status = usb_composite_probe(&hidg_driver, hid_bind); + status = usb_composite_probe(&hidg_driver); if (status < 0) platform_driver_unregister(&hidg_plat_driver); diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c deleted file mode 100644 index 8d1c75abd73..00000000000 --- a/drivers/usb/gadget/imx_udc.c +++ /dev/null @@ -1,1595 +0,0 @@ -/* - * driver/usb/gadget/imx_udc.c - * - * Copyright (C) 2005 Mike Lee <eemike@gmail.com> - * Copyright (C) 2008 Darius Augulis <augulis.darius@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/slab.h> -#include <linux/prefetch.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include <mach/usb.h> -#include <mach/hardware.h> - -#include "imx_udc.h" - -static const char driver_name[] = "imx_udc"; -static const char ep0name[] = "ep0"; - -void ep0_chg_stat(const char *label, struct imx_udc_struct *imx_usb, - enum ep0_state stat); - -/******************************************************************************* - * IMX UDC hardware related functions - ******************************************************************************* - */ - -void imx_udc_enable(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_FE_ENA | CTRL_AFE_ENA, - imx_usb->base + USB_CTRL); - imx_usb->gadget.speed = USB_SPEED_FULL; -} - -void imx_udc_disable(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_CTRL); - - __raw_writel(temp & ~(CTRL_FE_ENA | CTRL_AFE_ENA), - imx_usb->base + USB_CTRL); - - ep0_chg_stat(__func__, imx_usb, EP0_IDLE); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; -} - -void imx_udc_reset(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_ENAB); - - /* set RST bit */ - __raw_writel(temp | ENAB_RST, imx_usb->base + USB_ENAB); - - /* wait RST bit to clear */ - do {} while (__raw_readl(imx_usb->base + USB_ENAB) & ENAB_RST); - - /* wait CFG bit to assert */ - do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG)); - - /* udc module is now ready */ -} - -void imx_udc_config(struct imx_udc_struct *imx_usb) -{ - u8 ep_conf[5]; - u8 i, j, cfg; - struct imx_ep_struct *imx_ep; - - /* wait CFG bit to assert */ - do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG)); - - /* Download the endpoint buffer for endpoint 0. */ - for (j = 0; j < 5; j++) { - i = (j == 2 ? imx_usb->imx_ep[0].fifosize : 0x00); - __raw_writeb(i, imx_usb->base + USB_DDAT); - do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_BSY); - } - - /* Download the endpoint buffers for endpoints 1-5. - * We specify two configurations, one interface - */ - for (cfg = 1; cfg < 3; cfg++) { - for (i = 1; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - /* EP no | Config no */ - ep_conf[0] = (i << 4) | (cfg << 2); - /* Type | Direction */ - ep_conf[1] = (imx_ep->bmAttributes << 3) | - (EP_DIR(imx_ep) << 2); - /* Max packet size */ - ep_conf[2] = imx_ep->fifosize; - /* TRXTYP */ - ep_conf[3] = 0xC0; - /* FIFO no */ - ep_conf[4] = i; - - D_INI(imx_usb->dev, - "<%s> ep%d_conf[%d]:" - "[%02x-%02x-%02x-%02x-%02x]\n", - __func__, i, cfg, - ep_conf[0], ep_conf[1], ep_conf[2], - ep_conf[3], ep_conf[4]); - - for (j = 0; j < 5; j++) { - __raw_writeb(ep_conf[j], - imx_usb->base + USB_DDAT); - do {} while (__raw_readl(imx_usb->base - + USB_DADR) - & DADR_BSY); - } - } - } - - /* wait CFG bit to clear */ - do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG); -} - -void imx_udc_init_irq(struct imx_udc_struct *imx_usb) -{ - int i; - - /* Mask and clear all irqs */ - __raw_writel(0xFFFFFFFF, imx_usb->base + USB_MASK); - __raw_writel(0xFFFFFFFF, imx_usb->base + USB_INTR); - for (i = 0; i < IMX_USB_NB_EP; i++) { - __raw_writel(0x1FF, imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_usb->base + USB_EP_INTR(i)); - } - - /* Enable USB irqs */ - __raw_writel(INTR_MSOF | INTR_FRAME_MATCH, imx_usb->base + USB_MASK); - - /* Enable EP0 irqs */ - __raw_writel(0x1FF & ~(EPINTR_DEVREQ | EPINTR_MDEVREQ | EPINTR_EOT - | EPINTR_EOF | EPINTR_FIFO_EMPTY | EPINTR_FIFO_FULL), - imx_usb->base + USB_EP_MASK(0)); -} - -void imx_udc_init_ep(struct imx_udc_struct *imx_usb) -{ - int i, max, temp; - struct imx_ep_struct *imx_ep; - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - switch (imx_ep->fifosize) { - case 8: - max = 0; - break; - case 16: - max = 1; - break; - case 32: - max = 2; - break; - case 64: - max = 3; - break; - default: - max = 1; - break; - } - temp = (EP_DIR(imx_ep) << 7) | (max << 5) - | (imx_ep->bmAttributes << 3); - __raw_writel(temp, imx_usb->base + USB_EP_STAT(i)); - __raw_writel(temp | EPSTAT_FLUSH, - imx_usb->base + USB_EP_STAT(i)); - D_INI(imx_usb->dev, "<%s> ep%d_stat %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_STAT(i))); - } -} - -void imx_udc_init_fifo(struct imx_udc_struct *imx_usb) -{ - int i, temp; - struct imx_ep_struct *imx_ep; - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - - /* Fifo control */ - temp = EP_DIR(imx_ep) ? 0x0B000000 : 0x0F000000; - __raw_writel(temp, imx_usb->base + USB_EP_FCTRL(i)); - D_INI(imx_usb->dev, "<%s> ep%d_fctrl %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_FCTRL(i))); - - /* Fifo alarm */ - temp = (i ? imx_ep->fifosize / 2 : 0); - __raw_writel(temp, imx_usb->base + USB_EP_FALRM(i)); - D_INI(imx_usb->dev, "<%s> ep%d_falrm %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_FALRM(i))); - } -} - -static void imx_udc_init(struct imx_udc_struct *imx_usb) -{ - /* Reset UDC */ - imx_udc_reset(imx_usb); - - /* Download config to enpoint buffer */ - imx_udc_config(imx_usb); - - /* Setup interrups */ - imx_udc_init_irq(imx_usb); - - /* Setup endpoints */ - imx_udc_init_ep(imx_usb); - - /* Setup fifos */ - imx_udc_init_fifo(imx_usb); -} - -void imx_ep_irq_enable(struct imx_ep_struct *imx_ep) -{ - - int i = EP_NO(imx_ep); - - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i)); - __raw_writel(0x1FF & ~(EPINTR_EOT | EPINTR_EOF), - imx_ep->imx_usb->base + USB_EP_MASK(i)); -} - -void imx_ep_irq_disable(struct imx_ep_struct *imx_ep) -{ - - int i = EP_NO(imx_ep); - - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i)); -} - -int imx_ep_empty(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - return __raw_readl(imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep))) - & FSTAT_EMPTY; -} - -unsigned imx_fifo_bcount(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - return (__raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))) - & EPSTAT_BCOUNT) >> 16; -} - -void imx_flush(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - int temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_FLUSH, - imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); -} - -void imx_ep_stall(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - int temp, i; - - D_ERR(imx_usb->dev, - "<%s> Forced stall on %s\n", __func__, imx_ep->ep.name); - - imx_flush(imx_ep); - - /* Special care for ep0 */ - if (!EP_NO(imx_ep)) { - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, - imx_usb->base + USB_CTRL); - do { } while (__raw_readl(imx_usb->base + USB_CTRL) - & CTRL_CMDOVER); - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp & ~CTRL_CMDERROR, imx_usb->base + USB_CTRL); - } - else { - temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_STALL, - imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - - for (i = 0; i < 100; i ++) { - temp = __raw_readl(imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - if (!(temp & EPSTAT_STALL)) - break; - udelay(20); - } - if (i == 100) - D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n", - __func__, imx_ep->ep.name); - } -} - -static int imx_udc_get_frame(struct usb_gadget *_gadget) -{ - struct imx_udc_struct *imx_usb = container_of(_gadget, - struct imx_udc_struct, gadget); - - return __raw_readl(imx_usb->base + USB_FRAME) & 0x7FF; -} - -static int imx_udc_wakeup(struct usb_gadget *_gadget) -{ - return 0; -} - -/******************************************************************************* - * USB request control functions - ******************************************************************************* - */ - -static void ep_add_request(struct imx_ep_struct *imx_ep, - struct imx_request *req) -{ - if (unlikely(!req)) - return; - - req->in_use = 1; - list_add_tail(&req->queue, &imx_ep->queue); -} - -static void ep_del_request(struct imx_ep_struct *imx_ep, - struct imx_request *req) -{ - if (unlikely(!req)) - return; - - list_del_init(&req->queue); - req->in_use = 0; -} - -static void done(struct imx_ep_struct *imx_ep, - struct imx_request *req, int status) -{ - ep_del_request(imx_ep, req); - - if (likely(req->req.status == -EINPROGRESS)) - req->req.status = status; - else - status = req->req.status; - - if (status && status != -ESHUTDOWN) - D_ERR(imx_ep->imx_usb->dev, - "<%s> complete %s req %p stat %d len %u/%u\n", __func__, - imx_ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - req->req.complete(&imx_ep->ep, &req->req); -} - -static void nuke(struct imx_ep_struct *imx_ep, int status) -{ - struct imx_request *req; - - while (!list_empty(&imx_ep->queue)) { - req = list_entry(imx_ep->queue.next, struct imx_request, queue); - done(imx_ep, req, status); - } -} - -/******************************************************************************* - * Data tansfer over USB functions - ******************************************************************************* - */ -static int read_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - u8 *buf; - int bytes_ep, bufferspace, count, i; - - bytes_ep = imx_fifo_bcount(imx_ep); - bufferspace = req->req.length - req->req.actual; - - buf = req->req.buf + req->req.actual; - prefetchw(buf); - - if (unlikely(imx_ep_empty(imx_ep))) - count = 0; /* zlp */ - else - count = min(bytes_ep, bufferspace); - - for (i = count; i > 0; i--) - *buf++ = __raw_readb(imx_ep->imx_usb->base - + USB_EP_FDAT0(EP_NO(imx_ep))); - req->req.actual += count; - - return count; -} - -static int write_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - u8 *buf; - int length, count, temp; - - if (unlikely(__raw_readl(imx_ep->imx_usb->base + - USB_EP_STAT(EP_NO(imx_ep))) & EPSTAT_ZLPS)) { - D_TRX(imx_ep->imx_usb->dev, "<%s> zlp still queued in EP %s\n", - __func__, imx_ep->ep.name); - return -1; - } - - buf = req->req.buf + req->req.actual; - prefetch(buf); - - length = min(req->req.length - req->req.actual, (u32)imx_ep->fifosize); - - if (imx_fifo_bcount(imx_ep) + length > imx_ep->fifosize) { - D_TRX(imx_ep->imx_usb->dev, "<%s> packet overfill %s fifo\n", - __func__, imx_ep->ep.name); - return -1; - } - - req->req.actual += length; - count = length; - - if (!count && req->req.zero) { /* zlp */ - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_ZLPS, imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - D_TRX(imx_ep->imx_usb->dev, "<%s> zero packet\n", __func__); - return 0; - } - - while (count--) { - if (count == 0) { /* last byte */ - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_FCTRL(EP_NO(imx_ep))); - __raw_writel(temp | FCTRL_WFR, imx_ep->imx_usb->base - + USB_EP_FCTRL(EP_NO(imx_ep))); - } - __raw_writeb(*buf++, - imx_ep->imx_usb->base + USB_EP_FDAT0(EP_NO(imx_ep))); - } - - return length; -} - -static int read_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - int bytes = 0, - count, - completed = 0; - - while (__raw_readl(imx_ep->imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep))) - & FSTAT_FR) { - count = read_packet(imx_ep, req); - bytes += count; - - completed = (count != imx_ep->fifosize); - if (completed || req->req.actual == req->req.length) { - completed = 1; - break; - } - } - - if (completed || !req->req.length) { - done(imx_ep, req, 0); - D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n", - __func__, imx_ep->ep.name, req, - completed ? "completed" : "not completed"); - if (!EP_NO(imx_ep)) - ep0_chg_stat(__func__, imx_ep->imx_usb, EP0_IDLE); - } - - D_TRX(imx_ep->imx_usb->dev, "<%s> bytes read: %d\n", __func__, bytes); - - return completed; -} - -static int write_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - int bytes = 0, - count, - completed = 0; - - while (!completed) { - count = write_packet(imx_ep, req); - if (count < 0) - break; /* busy */ - bytes += count; - - /* last packet "must be" short (or a zlp) */ - completed = (count != imx_ep->fifosize); - - if (unlikely(completed)) { - done(imx_ep, req, 0); - D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n", - __func__, imx_ep->ep.name, req, - completed ? "completed" : "not completed"); - if (!EP_NO(imx_ep)) - ep0_chg_stat(__func__, - imx_ep->imx_usb, EP0_IDLE); - } - } - - D_TRX(imx_ep->imx_usb->dev, "<%s> bytes sent: %d\n", __func__, bytes); - - return completed; -} - -/******************************************************************************* - * Endpoint handlers - ******************************************************************************* - */ -static int handle_ep(struct imx_ep_struct *imx_ep) -{ - struct imx_request *req; - int completed = 0; - - do { - if (!list_empty(&imx_ep->queue)) - req = list_entry(imx_ep->queue.next, - struct imx_request, queue); - else { - D_REQ(imx_ep->imx_usb->dev, "<%s> no request on %s\n", - __func__, imx_ep->ep.name); - return 0; - } - - if (EP_DIR(imx_ep)) /* to host */ - completed = write_fifo(imx_ep, req); - else /* to device */ - completed = read_fifo(imx_ep, req); - - dump_ep_stat(__func__, imx_ep); - - } while (completed); - - return 0; -} - -static int handle_ep0(struct imx_ep_struct *imx_ep) -{ - struct imx_request *req = NULL; - int ret = 0; - - if (!list_empty(&imx_ep->queue)) { - req = list_entry(imx_ep->queue.next, struct imx_request, queue); - - switch (imx_ep->imx_usb->ep0state) { - - case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR */ - write_fifo(imx_ep, req); - break; - case EP0_OUT_DATA_PHASE: /* SET_DESCRIPTOR */ - read_fifo(imx_ep, req); - break; - default: - D_EP0(imx_ep->imx_usb->dev, - "<%s> ep0 i/o, odd state %d\n", - __func__, imx_ep->imx_usb->ep0state); - ep_del_request(imx_ep, req); - ret = -EL2HLT; - break; - } - } - - else - D_ERR(imx_ep->imx_usb->dev, "<%s> no request on %s\n", - __func__, imx_ep->ep.name); - - return ret; -} - -static void handle_ep0_devreq(struct imx_udc_struct *imx_usb) -{ - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0]; - union { - struct usb_ctrlrequest r; - u8 raw[8]; - u32 word[2]; - } u; - int temp, i; - - nuke(imx_ep, -EPROTO); - - /* read SETUP packet */ - for (i = 0; i < 2; i++) { - if (imx_ep_empty(imx_ep)) { - D_ERR(imx_usb->dev, - "<%s> no setup packet received\n", __func__); - goto stall; - } - u.word[i] = __raw_readl(imx_usb->base - + USB_EP_FDAT(EP_NO(imx_ep))); - } - - temp = imx_ep_empty(imx_ep); - while (!imx_ep_empty(imx_ep)) { - i = __raw_readl(imx_usb->base + USB_EP_FDAT(EP_NO(imx_ep))); - D_ERR(imx_usb->dev, - "<%s> wrong to have extra bytes for setup : 0x%08x\n", - __func__, i); - } - if (!temp) - goto stall; - - le16_to_cpus(&u.r.wValue); - le16_to_cpus(&u.r.wIndex); - le16_to_cpus(&u.r.wLength); - - D_REQ(imx_usb->dev, "<%s> SETUP %02x.%02x v%04x i%04x l%04x\n", - __func__, u.r.bRequestType, u.r.bRequest, - u.r.wValue, u.r.wIndex, u.r.wLength); - - if (imx_usb->set_config) { - /* NACK the host by using CMDOVER */ - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL); - - D_ERR(imx_usb->dev, - "<%s> set config req is pending, NACK the host\n", - __func__); - return; - } - - if (u.r.bRequestType & USB_DIR_IN) - ep0_chg_stat(__func__, imx_usb, EP0_IN_DATA_PHASE); - else - ep0_chg_stat(__func__, imx_usb, EP0_OUT_DATA_PHASE); - - i = imx_usb->driver->setup(&imx_usb->gadget, &u.r); - if (i < 0) { - D_ERR(imx_usb->dev, "<%s> device setup error %d\n", - __func__, i); - goto stall; - } - - return; -stall: - D_ERR(imx_usb->dev, "<%s> protocol STALL\n", __func__); - imx_ep_stall(imx_ep); - ep0_chg_stat(__func__, imx_usb, EP0_STALL); - return; -} - -/******************************************************************************* - * USB gadget callback functions - ******************************************************************************* - */ - -static int imx_ep_enable(struct usb_ep *usb_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct imx_ep_struct *imx_ep = container_of(usb_ep, - struct imx_ep_struct, ep); - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - unsigned long flags; - - if (!usb_ep - || !desc - || !EP_NO(imx_ep) - || desc->bDescriptorType != USB_DT_ENDPOINT - || imx_ep->bEndpointAddress != desc->bEndpointAddress) { - D_ERR(imx_usb->dev, - "<%s> bad ep or descriptor\n", __func__); - return -EINVAL; - } - - if (imx_ep->bmAttributes != desc->bmAttributes) { - D_ERR(imx_usb->dev, - "<%s> %s type mismatch\n", __func__, usb_ep->name); - return -EINVAL; - } - - if (imx_ep->fifosize < usb_endpoint_maxp(desc)) { - D_ERR(imx_usb->dev, - "<%s> bad %s maxpacket\n", __func__, usb_ep->name); - return -ERANGE; - } - - if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) { - D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__); - return -ESHUTDOWN; - } - - local_irq_save(flags); - - imx_ep->stopped = 0; - imx_flush(imx_ep); - imx_ep_irq_enable(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_usb->dev, "<%s> ENABLED %s\n", __func__, usb_ep->name); - return 0; -} - -static int imx_ep_disable(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of(usb_ep, - struct imx_ep_struct, ep); - unsigned long flags; - - if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) { - D_ERR(imx_ep->imx_usb->dev, "<%s> %s can not be disabled\n", - __func__, usb_ep ? imx_ep->ep.name : NULL); - return -EINVAL; - } - - local_irq_save(flags); - - imx_ep->stopped = 1; - nuke(imx_ep, -ESHUTDOWN); - imx_flush(imx_ep); - imx_ep_irq_disable(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_ep->imx_usb->dev, - "<%s> DISABLED %s\n", __func__, usb_ep->name); - return 0; -} - -static struct usb_request *imx_ep_alloc_request - (struct usb_ep *usb_ep, gfp_t gfp_flags) -{ - struct imx_request *req; - - if (!usb_ep) - return NULL; - - req = kzalloc(sizeof *req, gfp_flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - req->in_use = 0; - - return &req->req; -} - -static void imx_ep_free_request - (struct usb_ep *usb_ep, struct usb_request *usb_req) -{ - struct imx_request *req; - - req = container_of(usb_req, struct imx_request, req); - WARN_ON(!list_empty(&req->queue)); - kfree(req); -} - -static int imx_ep_queue - (struct usb_ep *usb_ep, struct usb_request *usb_req, gfp_t gfp_flags) -{ - struct imx_ep_struct *imx_ep; - struct imx_udc_struct *imx_usb; - struct imx_request *req; - unsigned long flags; - int ret = 0; - - imx_ep = container_of(usb_ep, struct imx_ep_struct, ep); - imx_usb = imx_ep->imx_usb; - req = container_of(usb_req, struct imx_request, req); - - /* - Special care on IMX udc. - Ignore enqueue when after set configuration from the - host. This assume all gadget drivers reply set - configuration with the next ep0 req enqueue. - */ - if (imx_usb->set_config && !EP_NO(imx_ep)) { - imx_usb->set_config = 0; - D_ERR(imx_usb->dev, - "<%s> gadget reply set config\n", __func__); - return 0; - } - - if (unlikely(!usb_req || !req || !usb_req->complete || !usb_req->buf)) { - D_ERR(imx_usb->dev, "<%s> bad params\n", __func__); - return -EINVAL; - } - - if (unlikely(!usb_ep || !imx_ep)) { - D_ERR(imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) { - D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__); - return -ESHUTDOWN; - } - - /* Debug */ - D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n", - __func__, EP_NO(imx_ep), - ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state - == EP0_IN_DATA_PHASE) - || (EP_NO(imx_ep) && EP_DIR(imx_ep))) - ? "IN" : "OUT", usb_req->length); - dump_req(__func__, imx_ep, usb_req); - - if (imx_ep->stopped) { - usb_req->status = -ESHUTDOWN; - return -ESHUTDOWN; - } - - if (req->in_use) { - D_ERR(imx_usb->dev, - "<%s> refusing to queue req %p (already queued)\n", - __func__, req); - return 0; - } - - local_irq_save(flags); - - usb_req->status = -EINPROGRESS; - usb_req->actual = 0; - - ep_add_request(imx_ep, req); - - if (!EP_NO(imx_ep)) - ret = handle_ep0(imx_ep); - else - ret = handle_ep(imx_ep); - - local_irq_restore(flags); - return ret; -} - -static int imx_ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req) -{ - - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - struct imx_request *req; - unsigned long flags; - - if (unlikely(!usb_ep || !EP_NO(imx_ep))) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - local_irq_save(flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(req, &imx_ep->queue, queue) { - if (&req->req == usb_req) - break; - } - if (&req->req != usb_req) { - local_irq_restore(flags); - return -EINVAL; - } - - done(imx_ep, req, -ECONNRESET); - - local_irq_restore(flags); - return 0; -} - -static int imx_ep_set_halt(struct usb_ep *usb_ep, int value) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - unsigned long flags; - - if (unlikely(!usb_ep || !EP_NO(imx_ep))) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - local_irq_save(flags); - - if ((imx_ep->bEndpointAddress & USB_DIR_IN) - && !list_empty(&imx_ep->queue)) { - local_irq_restore(flags); - return -EAGAIN; - } - - imx_ep_stall(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_ep->imx_usb->dev, "<%s> %s halt\n", __func__, usb_ep->name); - return 0; -} - -static int imx_ep_fifo_status(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - - if (!usb_ep) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -ENODEV; - } - - if (imx_ep->imx_usb->gadget.speed == USB_SPEED_UNKNOWN) - return 0; - else - return imx_fifo_bcount(imx_ep); -} - -static void imx_ep_fifo_flush(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - unsigned long flags; - - local_irq_save(flags); - - if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - local_irq_restore(flags); - return; - } - - /* toggle and halt bits stay unchanged */ - imx_flush(imx_ep); - - local_irq_restore(flags); -} - -static struct usb_ep_ops imx_ep_ops = { - .enable = imx_ep_enable, - .disable = imx_ep_disable, - - .alloc_request = imx_ep_alloc_request, - .free_request = imx_ep_free_request, - - .queue = imx_ep_queue, - .dequeue = imx_ep_dequeue, - - .set_halt = imx_ep_set_halt, - .fifo_status = imx_ep_fifo_status, - .fifo_flush = imx_ep_fifo_flush, -}; - -/******************************************************************************* - * USB endpoint control functions - ******************************************************************************* - */ - -void ep0_chg_stat(const char *label, - struct imx_udc_struct *imx_usb, enum ep0_state stat) -{ - D_EP0(imx_usb->dev, "<%s> from %15s to %15s\n", - label, state_name[imx_usb->ep0state], state_name[stat]); - - if (imx_usb->ep0state == stat) - return; - - imx_usb->ep0state = stat; -} - -static void usb_init_data(struct imx_udc_struct *imx_usb) -{ - struct imx_ep_struct *imx_ep; - u8 i; - - /* device/ep0 records init */ - INIT_LIST_HEAD(&imx_usb->gadget.ep_list); - INIT_LIST_HEAD(&imx_usb->gadget.ep0->ep_list); - ep0_chg_stat(__func__, imx_usb, EP0_IDLE); - - /* basic endpoint records init */ - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - - if (i) { - list_add_tail(&imx_ep->ep.ep_list, - &imx_usb->gadget.ep_list); - imx_ep->stopped = 1; - } else - imx_ep->stopped = 0; - - INIT_LIST_HEAD(&imx_ep->queue); - } -} - -static void udc_stop_activity(struct imx_udc_struct *imx_usb, - struct usb_gadget_driver *driver) -{ - struct imx_ep_struct *imx_ep; - int i; - - if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN) - driver = NULL; - - /* prevent new request submissions, kill any outstanding requests */ - for (i = 1; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - imx_flush(imx_ep); - imx_ep->stopped = 1; - imx_ep_irq_disable(imx_ep); - nuke(imx_ep, -ESHUTDOWN); - } - - imx_usb->cfg = 0; - imx_usb->intf = 0; - imx_usb->alt = 0; - - if (driver) - driver->disconnect(&imx_usb->gadget); -} - -/******************************************************************************* - * Interrupt handlers - ******************************************************************************* - */ - -/* - * Called when timer expires. - * Timer is started when CFG_CHG is received. - */ -static void handle_config(unsigned long data) -{ - struct imx_udc_struct *imx_usb = (void *)data; - struct usb_ctrlrequest u; - int temp, cfg, intf, alt; - - local_irq_disable(); - - temp = __raw_readl(imx_usb->base + USB_STAT); - cfg = (temp & STAT_CFG) >> 5; - intf = (temp & STAT_INTF) >> 3; - alt = temp & STAT_ALTSET; - - D_REQ(imx_usb->dev, - "<%s> orig config C=%d, I=%d, A=%d / " - "req config C=%d, I=%d, A=%d\n", - __func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt, - cfg, intf, alt); - - if (cfg == 1 || cfg == 2) { - - if (imx_usb->cfg != cfg) { - u.bRequest = USB_REQ_SET_CONFIGURATION; - u.bRequestType = USB_DIR_OUT | - USB_TYPE_STANDARD | - USB_RECIP_DEVICE; - u.wValue = cfg; - u.wIndex = 0; - u.wLength = 0; - imx_usb->cfg = cfg; - imx_usb->driver->setup(&imx_usb->gadget, &u); - - } - if (imx_usb->intf != intf || imx_usb->alt != alt) { - u.bRequest = USB_REQ_SET_INTERFACE; - u.bRequestType = USB_DIR_OUT | - USB_TYPE_STANDARD | - USB_RECIP_INTERFACE; - u.wValue = alt; - u.wIndex = intf; - u.wLength = 0; - imx_usb->intf = intf; - imx_usb->alt = alt; - imx_usb->driver->setup(&imx_usb->gadget, &u); - } - } - - imx_usb->set_config = 0; - - local_irq_enable(); -} - -static irqreturn_t imx_udc_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - int intr = __raw_readl(imx_usb->base + USB_INTR); - int temp; - - if (intr & (INTR_WAKEUP | INTR_SUSPEND | INTR_RESUME | INTR_RESET_START - | INTR_RESET_STOP | INTR_CFG_CHG)) { - dump_intr(__func__, intr, imx_usb->dev); - dump_usb_stat(__func__, imx_usb); - } - - if (!imx_usb->driver) - goto end_irq; - - if (intr & INTR_SOF) { - /* Copy from Freescale BSP. - We must enable SOF intr and set CMDOVER. - Datasheet don't specifiy this action, but it - is done in Freescale BSP, so just copy it. - */ - if (imx_usb->ep0state == EP0_IDLE) { - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER, - imx_usb->base + USB_CTRL); - } - } - - if (intr & INTR_CFG_CHG) { - /* A workaround of serious IMX UDC bug. - Handling of CFG_CHG should be delayed for some time, because - IMX does not NACK the host when CFG_CHG interrupt is pending. - There is no time to handle current CFG_CHG - if next CFG_CHG or SETUP packed is send immediately. - We have to clear CFG_CHG, start the timer and - NACK the host by setting CTRL_CMDOVER - if it sends any SETUP packet. - When timer expires, handler is called to handle configuration - changes. While CFG_CHG is not handled (set_config=1), - we must NACK the host to every SETUP packed. - This delay prevents from going out of sync with host. - */ - __raw_writel(INTR_CFG_CHG, imx_usb->base + USB_INTR); - imx_usb->set_config = 1; - mod_timer(&imx_usb->timer, jiffies + 5); - goto end_irq; - } - - if (intr & INTR_WAKEUP) { - if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN - && imx_usb->driver && imx_usb->driver->resume) - imx_usb->driver->resume(&imx_usb->gadget); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_FULL; - } - - if (intr & INTR_SUSPEND) { - if (imx_usb->gadget.speed != USB_SPEED_UNKNOWN - && imx_usb->driver && imx_usb->driver->suspend) - imx_usb->driver->suspend(&imx_usb->gadget); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; - } - - if (intr & INTR_RESET_START) { - __raw_writel(intr, imx_usb->base + USB_INTR); - udc_stop_activity(imx_usb, imx_usb->driver); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; - } - - if (intr & INTR_RESET_STOP) - imx_usb->gadget.speed = USB_SPEED_FULL; - -end_irq: - __raw_writel(intr, imx_usb->base + USB_INTR); - return IRQ_HANDLED; -} - -static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0]; - int intr = __raw_readl(imx_usb->base + USB_EP_INTR(0)); - - dump_ep_intr(__func__, 0, intr, imx_usb->dev); - - if (!imx_usb->driver) { - __raw_writel(intr, imx_usb->base + USB_EP_INTR(0)); - return IRQ_HANDLED; - } - - /* DEVREQ has highest priority */ - if (intr & (EPINTR_DEVREQ | EPINTR_MDEVREQ)) - handle_ep0_devreq(imx_usb); - /* Seem i.MX is missing EOF interrupt sometimes. - * Therefore we don't monitor EOF. - * We call handle_ep0() only if a request is queued for ep0. - */ - else if (!list_empty(&imx_ep->queue)) - handle_ep0(imx_ep); - - __raw_writel(intr, imx_usb->base + USB_EP_INTR(0)); - - return IRQ_HANDLED; -} - -#ifndef MX1_INT_USBD0 -#define MX1_INT_USBD0 MX1_USBD_INT0 -#endif - -static irqreturn_t imx_udc_bulk_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[irq - MX1_INT_USBD0]; - int intr = __raw_readl(imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - - dump_ep_intr(__func__, irq - MX1_INT_USBD0, intr, imx_usb->dev); - - if (!imx_usb->driver) { - __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - return IRQ_HANDLED; - } - - handle_ep(imx_ep); - - __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - - return IRQ_HANDLED; -} - -irq_handler_t intr_handler(int i) -{ - switch (i) { - case 0: - return imx_udc_ctrl_irq; - case 1: - case 2: - case 3: - case 4: - case 5: - return imx_udc_bulk_irq; - default: - return imx_udc_irq; - } -} - -/******************************************************************************* - * Static defined IMX UDC structure - ******************************************************************************* - */ - -static int imx_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int imx_udc_stop(struct usb_gadget_driver *driver); -static const struct usb_gadget_ops imx_udc_ops = { - .get_frame = imx_udc_get_frame, - .wakeup = imx_udc_wakeup, - .start = imx_udc_start, - .stop = imx_udc_stop, -}; - -static struct imx_udc_struct controller = { - .gadget = { - .ops = &imx_udc_ops, - .ep0 = &controller.imx_ep[0].ep, - .name = driver_name, - .dev = { - .init_name = "gadget", - }, - }, - - .imx_ep[0] = { - .ep = { - .name = ep0name, - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = 0, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - }, - .imx_ep[1] = { - .ep = { - .name = "ep1in-bulk", - .ops = &imx_ep_ops, - .maxpacket = 64, - }, - .imx_usb = &controller, - .fifosize = 64, - .bEndpointAddress = USB_DIR_IN | 1, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[2] = { - .ep = { - .name = "ep2out-bulk", - .ops = &imx_ep_ops, - .maxpacket = 64, - }, - .imx_usb = &controller, - .fifosize = 64, - .bEndpointAddress = USB_DIR_OUT | 2, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[3] = { - .ep = { - .name = "ep3out-bulk", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_OUT | 3, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[4] = { - .ep = { - .name = "ep4in-int", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_IN | 4, - .bmAttributes = USB_ENDPOINT_XFER_INT, - }, - .imx_ep[5] = { - .ep = { - .name = "ep5out-int", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_OUT | 5, - .bmAttributes = USB_ENDPOINT_XFER_INT, - }, -}; - -/******************************************************************************* - * USB gadget driver functions - ******************************************************************************* - */ -static int imx_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) -{ - struct imx_udc_struct *imx_usb = &controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->disconnect - || !driver->setup) - return -EINVAL; - if (!imx_usb) - return -ENODEV; - if (imx_usb->driver) - return -EBUSY; - - /* first hook up the driver ... */ - imx_usb->driver = driver; - imx_usb->gadget.dev.driver = &driver->driver; - - retval = device_add(&imx_usb->gadget.dev); - if (retval) - goto fail; - retval = bind(&imx_usb->gadget); - if (retval) { - D_ERR(imx_usb->dev, "<%s> bind to driver %s --> error %d\n", - __func__, driver->driver.name, retval); - device_del(&imx_usb->gadget.dev); - - goto fail; - } - - D_INI(imx_usb->dev, "<%s> registered gadget driver '%s'\n", - __func__, driver->driver.name); - - imx_udc_enable(imx_usb); - - return 0; -fail: - imx_usb->driver = NULL; - imx_usb->gadget.dev.driver = NULL; - return retval; -} - -static int imx_udc_stop(struct usb_gadget_driver *driver) -{ - struct imx_udc_struct *imx_usb = &controller; - - if (!imx_usb) - return -ENODEV; - if (!driver || driver != imx_usb->driver || !driver->unbind) - return -EINVAL; - - udc_stop_activity(imx_usb, driver); - imx_udc_disable(imx_usb); - del_timer(&imx_usb->timer); - - driver->unbind(&imx_usb->gadget); - imx_usb->gadget.dev.driver = NULL; - imx_usb->driver = NULL; - - device_del(&imx_usb->gadget.dev); - - D_INI(imx_usb->dev, "<%s> unregistered gadget driver '%s'\n", - __func__, driver->driver.name); - - return 0; -} - -/******************************************************************************* - * Module functions - ******************************************************************************* - */ - -static int __init imx_udc_probe(struct platform_device *pdev) -{ - struct imx_udc_struct *imx_usb = &controller; - struct resource *res; - struct imxusb_platform_data *pdata; - struct clk *clk; - void __iomem *base; - int ret = 0; - int i; - resource_size_t res_size; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "can't get device resources\n"); - return -ENODEV; - } - - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "driver needs platform data\n"); - return -ENODEV; - } - - res_size = resource_size(res); - if (!request_mem_region(res->start, res_size, res->name)) { - dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n", - res_size, res->start); - return -ENOMEM; - } - - if (pdata->init) { - ret = pdata->init(&pdev->dev); - if (ret) - goto fail0; - } - - base = ioremap(res->start, res_size); - if (!base) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -EIO; - goto fail1; - } - - clk = clk_get(NULL, "usbd_clk"); - if (IS_ERR(clk)) { - ret = PTR_ERR(clk); - dev_err(&pdev->dev, "can't get USB clock\n"); - goto fail2; - } - clk_enable(clk); - - if (clk_get_rate(clk) != 48000000) { - D_INI(&pdev->dev, - "Bad USB clock (%d Hz), changing to 48000000 Hz\n", - (int)clk_get_rate(clk)); - if (clk_set_rate(clk, 48000000)) { - dev_err(&pdev->dev, - "Unable to set correct USB clock (48MHz)\n"); - ret = -EIO; - goto fail3; - } - } - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) { - imx_usb->usbd_int[i] = platform_get_irq(pdev, i); - if (imx_usb->usbd_int[i] < 0) { - dev_err(&pdev->dev, "can't get irq number\n"); - ret = -ENODEV; - goto fail3; - } - } - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) { - ret = request_irq(imx_usb->usbd_int[i], intr_handler(i), - 0, driver_name, imx_usb); - if (ret) { - dev_err(&pdev->dev, "can't get irq %i, err %d\n", - imx_usb->usbd_int[i], ret); - for (--i; i >= 0; i--) - free_irq(imx_usb->usbd_int[i], imx_usb); - goto fail3; - } - } - - imx_usb->res = res; - imx_usb->base = base; - imx_usb->clk = clk; - imx_usb->dev = &pdev->dev; - - device_initialize(&imx_usb->gadget.dev); - - imx_usb->gadget.dev.parent = &pdev->dev; - imx_usb->gadget.dev.dma_mask = pdev->dev.dma_mask; - - platform_set_drvdata(pdev, imx_usb); - - usb_init_data(imx_usb); - imx_udc_init(imx_usb); - - init_timer(&imx_usb->timer); - imx_usb->timer.function = handle_config; - imx_usb->timer.data = (unsigned long)imx_usb; - - ret = usb_add_gadget_udc(&pdev->dev, &imx_usb->gadget); - if (ret) - goto fail4; - - return 0; -fail4: - for (i = 0; i < IMX_USB_NB_EP + 1; i++) - free_irq(imx_usb->usbd_int[i], imx_usb); -fail3: - clk_put(clk); - clk_disable(clk); -fail2: - iounmap(base); -fail1: - if (pdata->exit) - pdata->exit(&pdev->dev); -fail0: - release_mem_region(res->start, res_size); - return ret; -} - -static int __exit imx_udc_remove(struct platform_device *pdev) -{ - struct imx_udc_struct *imx_usb = platform_get_drvdata(pdev); - struct imxusb_platform_data *pdata = pdev->dev.platform_data; - int i; - - usb_del_gadget_udc(&imx_usb->gadget); - imx_udc_disable(imx_usb); - del_timer(&imx_usb->timer); - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) - free_irq(imx_usb->usbd_int[i], imx_usb); - - clk_put(imx_usb->clk); - clk_disable(imx_usb->clk); - iounmap(imx_usb->base); - - release_mem_region(imx_usb->res->start, resource_size(imx_usb->res)); - - if (pdata->exit) - pdata->exit(&pdev->dev); - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -/*----------------------------------------------------------------------------*/ - -#ifdef CONFIG_PM -#define imx_udc_suspend NULL -#define imx_udc_resume NULL -#else -#define imx_udc_suspend NULL -#define imx_udc_resume NULL -#endif - -/*----------------------------------------------------------------------------*/ - -static struct platform_driver udc_driver = { - .driver = { - .name = driver_name, - .owner = THIS_MODULE, - }, - .remove = __exit_p(imx_udc_remove), - .suspend = imx_udc_suspend, - .resume = imx_udc_resume, -}; - -static int __init udc_init(void) -{ - return platform_driver_probe(&udc_driver, imx_udc_probe); -} -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); - -MODULE_DESCRIPTION("IMX USB Device Controller driver"); -MODULE_AUTHOR("Darius Augulis <augulis.darius@gmail.com>"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx_udc"); diff --git a/drivers/usb/gadget/imx_udc.h b/drivers/usb/gadget/imx_udc.h deleted file mode 100644 index d118fb77784..00000000000 --- a/drivers/usb/gadget/imx_udc.h +++ /dev/null @@ -1,351 +0,0 @@ -/* - * Copyright (C) 2005 Mike Lee(eemike@gmail.com) - * - * This udc driver is now under testing and code is based on pxa2xx_udc.h - * Please use it with your own risk! - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef __LINUX_USB_GADGET_IMX_H -#define __LINUX_USB_GADGET_IMX_H - -#include <linux/types.h> - -/* Helper macros */ -#define EP_NO(ep) ((ep->bEndpointAddress) & ~USB_DIR_IN) /* IN:1, OUT:0 */ -#define EP_DIR(ep) ((ep->bEndpointAddress) & USB_DIR_IN ? 1 : 0) -#define IMX_USB_NB_EP 6 - -/* Driver structures */ -struct imx_request { - struct usb_request req; - struct list_head queue; - unsigned int in_use; -}; - -enum ep0_state { - EP0_IDLE, - EP0_IN_DATA_PHASE, - EP0_OUT_DATA_PHASE, - EP0_CONFIG, - EP0_STALL, -}; - -struct imx_ep_struct { - struct usb_ep ep; - struct imx_udc_struct *imx_usb; - struct list_head queue; - unsigned char stopped; - unsigned char fifosize; - unsigned char bEndpointAddress; - unsigned char bmAttributes; -}; - -struct imx_udc_struct { - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - struct device *dev; - struct imx_ep_struct imx_ep[IMX_USB_NB_EP]; - struct clk *clk; - struct timer_list timer; - enum ep0_state ep0state; - struct resource *res; - void __iomem *base; - unsigned char set_config; - int cfg, - intf, - alt, - usbd_int[7]; -}; - -/* USB registers */ -#define USB_FRAME (0x00) /* USB frame */ -#define USB_SPEC (0x04) /* USB Spec */ -#define USB_STAT (0x08) /* USB Status */ -#define USB_CTRL (0x0C) /* USB Control */ -#define USB_DADR (0x10) /* USB Desc RAM addr */ -#define USB_DDAT (0x14) /* USB Desc RAM/EP buffer data */ -#define USB_INTR (0x18) /* USB interrupt */ -#define USB_MASK (0x1C) /* USB Mask */ -#define USB_ENAB (0x24) /* USB Enable */ -#define USB_EP_STAT(x) (0x30 + (x*0x30)) /* USB status/control */ -#define USB_EP_INTR(x) (0x34 + (x*0x30)) /* USB interrupt */ -#define USB_EP_MASK(x) (0x38 + (x*0x30)) /* USB mask */ -#define USB_EP_FDAT(x) (0x3C + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT0(x) (0x3C + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT1(x) (0x3D + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT2(x) (0x3E + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT3(x) (0x3F + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FSTAT(x) (0x40 + (x*0x30)) /* USB FIFO status */ -#define USB_EP_FCTRL(x) (0x44 + (x*0x30)) /* USB FIFO control */ -#define USB_EP_LRFP(x) (0x48 + (x*0x30)) /* USB last rd f. pointer */ -#define USB_EP_LWFP(x) (0x4C + (x*0x30)) /* USB last wr f. pointer */ -#define USB_EP_FALRM(x) (0x50 + (x*0x30)) /* USB FIFO alarm */ -#define USB_EP_FRDP(x) (0x54 + (x*0x30)) /* USB FIFO read pointer */ -#define USB_EP_FWRP(x) (0x58 + (x*0x30)) /* USB FIFO write pointer */ -/* USB Control Register Bit Fields.*/ -#define CTRL_CMDOVER (1<<6) /* UDC status */ -#define CTRL_CMDERROR (1<<5) /* UDC status */ -#define CTRL_FE_ENA (1<<3) /* Enable Font End logic */ -#define CTRL_UDC_RST (1<<2) /* UDC reset */ -#define CTRL_AFE_ENA (1<<1) /* Analog Font end enable */ -#define CTRL_RESUME (1<<0) /* UDC resume */ -/* USB Status Register Bit Fields.*/ -#define STAT_RST (1<<8) -#define STAT_SUSP (1<<7) -#define STAT_CFG (3<<5) -#define STAT_INTF (3<<3) -#define STAT_ALTSET (7<<0) -/* USB Interrupt Status/Mask Registers Bit fields */ -#define INTR_WAKEUP (1<<31) /* Wake up Interrupt */ -#define INTR_MSOF (1<<7) /* Missed Start of Frame */ -#define INTR_SOF (1<<6) /* Start of Frame */ -#define INTR_RESET_STOP (1<<5) /* Reset Signaling stop */ -#define INTR_RESET_START (1<<4) /* Reset Signaling start */ -#define INTR_RESUME (1<<3) /* Suspend to resume */ -#define INTR_SUSPEND (1<<2) /* Active to suspend */ -#define INTR_FRAME_MATCH (1<<1) /* Frame matched */ -#define INTR_CFG_CHG (1<<0) /* Configuration change occurred */ -/* USB Enable Register Bit Fields.*/ -#define ENAB_RST (1<<31) /* Reset USB modules */ -#define ENAB_ENAB (1<<30) /* Enable USB modules*/ -#define ENAB_SUSPEND (1<<29) /* Suspend USB modules */ -#define ENAB_ENDIAN (1<<28) /* Endian of USB modules */ -#define ENAB_PWRMD (1<<0) /* Power mode of USB modules */ -/* USB Descriptor Ram Address Register bit fields */ -#define DADR_CFG (1<<31) /* Configuration */ -#define DADR_BSY (1<<30) /* Busy status */ -#define DADR_DADR (0x1FF) /* Descriptor Ram Address */ -/* USB Descriptor RAM/Endpoint Buffer Data Register bit fields */ -#define DDAT_DDAT (0xFF) /* Descriptor Endpoint Buffer */ -/* USB Endpoint Status Register bit fields */ -#define EPSTAT_BCOUNT (0x7F<<16) /* Endpoint FIFO byte count */ -#define EPSTAT_SIP (1<<8) /* Endpoint setup in progress */ -#define EPSTAT_DIR (1<<7) /* Endpoint transfer direction */ -#define EPSTAT_MAX (3<<5) /* Endpoint Max packet size */ -#define EPSTAT_TYP (3<<3) /* Endpoint type */ -#define EPSTAT_ZLPS (1<<2) /* Send zero length packet */ -#define EPSTAT_FLUSH (1<<1) /* Endpoint FIFO Flush */ -#define EPSTAT_STALL (1<<0) /* Force stall */ -/* USB Endpoint FIFO Status Register bit fields */ -#define FSTAT_FRAME_STAT (0xF<<24) /* Frame status bit [0-3] */ -#define FSTAT_ERR (1<<22) /* FIFO error */ -#define FSTAT_UF (1<<21) /* FIFO underflow */ -#define FSTAT_OF (1<<20) /* FIFO overflow */ -#define FSTAT_FR (1<<19) /* FIFO frame ready */ -#define FSTAT_FULL (1<<18) /* FIFO full */ -#define FSTAT_ALRM (1<<17) /* FIFO alarm */ -#define FSTAT_EMPTY (1<<16) /* FIFO empty */ -/* USB Endpoint FIFO Control Register bit fields */ -#define FCTRL_WFR (1<<29) /* Write frame end */ -/* USB Endpoint Interrupt Status Regsiter bit fields */ -#define EPINTR_FIFO_FULL (1<<8) /* fifo full */ -#define EPINTR_FIFO_EMPTY (1<<7) /* fifo empty */ -#define EPINTR_FIFO_ERROR (1<<6) /* fifo error */ -#define EPINTR_FIFO_HIGH (1<<5) /* fifo high */ -#define EPINTR_FIFO_LOW (1<<4) /* fifo low */ -#define EPINTR_MDEVREQ (1<<3) /* multi Device request */ -#define EPINTR_EOT (1<<2) /* fifo end of transfer */ -#define EPINTR_DEVREQ (1<<1) /* Device request */ -#define EPINTR_EOF (1<<0) /* fifo end of frame */ - -/* Debug macros */ -#ifdef DEBUG - -/* #define DEBUG_REQ */ -/* #define DEBUG_TRX */ -/* #define DEBUG_INIT */ -/* #define DEBUG_EP0 */ -/* #define DEBUG_EPX */ -/* #define DEBUG_IRQ */ -/* #define DEBUG_EPIRQ */ -/* #define DEBUG_DUMP */ -/* #define DEBUG_ERR */ - -#ifdef DEBUG_REQ - #define D_REQ(dev, args...) dev_dbg(dev, ## args) -#else - #define D_REQ(dev, args...) do {} while (0) -#endif /* DEBUG_REQ */ - -#ifdef DEBUG_TRX - #define D_TRX(dev, args...) dev_dbg(dev, ## args) -#else - #define D_TRX(dev, args...) do {} while (0) -#endif /* DEBUG_TRX */ - -#ifdef DEBUG_INIT - #define D_INI(dev, args...) dev_dbg(dev, ## args) -#else - #define D_INI(dev, args...) do {} while (0) -#endif /* DEBUG_INIT */ - -#ifdef DEBUG_EP0 - static const char *state_name[] = { - "EP0_IDLE", - "EP0_IN_DATA_PHASE", - "EP0_OUT_DATA_PHASE", - "EP0_CONFIG", - "EP0_STALL" - }; - #define D_EP0(dev, args...) dev_dbg(dev, ## args) -#else - #define D_EP0(dev, args...) do {} while (0) -#endif /* DEBUG_EP0 */ - -#ifdef DEBUG_EPX - #define D_EPX(dev, args...) dev_dbg(dev, ## args) -#else - #define D_EPX(dev, args...) do {} while (0) -#endif /* DEBUG_EP0 */ - -#ifdef DEBUG_IRQ - static void dump_intr(const char *label, int irqreg, struct device *dev) - { - dev_dbg(dev, "<%s> USB_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, - (irqreg & INTR_WAKEUP) ? " wake" : "", - (irqreg & INTR_MSOF) ? " msof" : "", - (irqreg & INTR_SOF) ? " sof" : "", - (irqreg & INTR_RESUME) ? " resume" : "", - (irqreg & INTR_SUSPEND) ? " suspend" : "", - (irqreg & INTR_RESET_STOP) ? " noreset" : "", - (irqreg & INTR_RESET_START) ? " reset" : "", - (irqreg & INTR_FRAME_MATCH) ? " fmatch" : "", - (irqreg & INTR_CFG_CHG) ? " config" : ""); - } -#else - #define dump_intr(x, y, z) do {} while (0) -#endif /* DEBUG_IRQ */ - -#ifdef DEBUG_EPIRQ - static void dump_ep_intr(const char *label, int nr, int irqreg, - struct device *dev) - { - dev_dbg(dev, "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, nr, - (irqreg & EPINTR_FIFO_FULL) ? " full" : "", - (irqreg & EPINTR_FIFO_EMPTY) ? " fempty" : "", - (irqreg & EPINTR_FIFO_ERROR) ? " ferr" : "", - (irqreg & EPINTR_FIFO_HIGH) ? " fhigh" : "", - (irqreg & EPINTR_FIFO_LOW) ? " flow" : "", - (irqreg & EPINTR_MDEVREQ) ? " mreq" : "", - (irqreg & EPINTR_EOF) ? " eof" : "", - (irqreg & EPINTR_DEVREQ) ? " devreq" : "", - (irqreg & EPINTR_EOT) ? " eot" : ""); - } -#else - #define dump_ep_intr(x, y, z, i) do {} while (0) -#endif /* DEBUG_IRQ */ - -#ifdef DEBUG_DUMP - static void dump_usb_stat(const char *label, - struct imx_udc_struct *imx_usb) - { - int temp = __raw_readl(imx_usb->base + USB_STAT); - - dev_dbg(imx_usb->dev, - "<%s> USB_STAT=[%s%s CFG=%d, INTF=%d, ALTR=%d]\n", label, - (temp & STAT_RST) ? " reset" : "", - (temp & STAT_SUSP) ? " suspend" : "", - (temp & STAT_CFG) >> 5, - (temp & STAT_INTF) >> 3, - (temp & STAT_ALTSET)); - } - - static void dump_ep_stat(const char *label, - struct imx_ep_struct *imx_ep) - { - int temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_INTR(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", - label, EP_NO(imx_ep), - (temp & EPINTR_FIFO_FULL) ? " full" : "", - (temp & EPINTR_FIFO_EMPTY) ? " fempty" : "", - (temp & EPINTR_FIFO_ERROR) ? " ferr" : "", - (temp & EPINTR_FIFO_HIGH) ? " fhigh" : "", - (temp & EPINTR_FIFO_LOW) ? " flow" : "", - (temp & EPINTR_MDEVREQ) ? " mreq" : "", - (temp & EPINTR_EOF) ? " eof" : "", - (temp & EPINTR_DEVREQ) ? " devreq" : "", - (temp & EPINTR_EOT) ? " eot" : ""); - - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_STAT=[%s%s bcount=%d]\n", - label, EP_NO(imx_ep), - (temp & EPSTAT_SIP) ? " sip" : "", - (temp & EPSTAT_STALL) ? " stall" : "", - (temp & EPSTAT_BCOUNT) >> 16); - - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_FSTAT(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_FSTAT=[%s%s%s%s%s%s%s]\n", - label, EP_NO(imx_ep), - (temp & FSTAT_ERR) ? " ferr" : "", - (temp & FSTAT_UF) ? " funder" : "", - (temp & FSTAT_OF) ? " fover" : "", - (temp & FSTAT_FR) ? " fready" : "", - (temp & FSTAT_FULL) ? " ffull" : "", - (temp & FSTAT_ALRM) ? " falarm" : "", - (temp & FSTAT_EMPTY) ? " fempty" : ""); - } - - static void dump_req(const char *label, struct imx_ep_struct *imx_ep, - struct usb_request *req) - { - int i; - - if (!req || !req->buf) { - dev_dbg(imx_ep->imx_usb->dev, - "<%s> req or req buf is free\n", label); - return; - } - - if ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state - == EP0_IN_DATA_PHASE) - || (EP_NO(imx_ep) && EP_DIR(imx_ep))) { - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> request dump <", label); - for (i = 0; i < req->length; i++) - printk("%02x-", *((u8 *)req->buf + i)); - printk(">\n"); - } - } - -#else - #define dump_ep_stat(x, y) do {} while (0) - #define dump_usb_stat(x, y) do {} while (0) - #define dump_req(x, y, z) do {} while (0) -#endif /* DEBUG_DUMP */ - -#ifdef DEBUG_ERR - #define D_ERR(dev, args...) dev_dbg(dev, ## args) -#else - #define D_ERR(dev, args...) do {} while (0) -#endif - -#else - #define D_REQ(dev, args...) do {} while (0) - #define D_TRX(dev, args...) do {} while (0) - #define D_INI(dev, args...) do {} while (0) - #define D_EP0(dev, args...) do {} while (0) - #define D_EPX(dev, args...) do {} while (0) - #define dump_ep_intr(x, y, z, i) do {} while (0) - #define dump_intr(x, y, z) do {} while (0) - #define dump_ep_stat(x, y) do {} while (0) - #define dump_usb_stat(x, y) do {} while (0) - #define dump_req(x, y, z) do {} while (0) - #define D_ERR(dev, args...) do {} while (0) -#endif /* DEBUG */ - -#endif /* __LINUX_USB_GADGET_IMX_H */ diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index ae04266dba1..2e4ce770490 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -24,6 +24,8 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/poll.h> +#include <linux/mmu_context.h> +#include <linux/aio.h> #include <linux/device.h> #include <linux/moduleparam.h> @@ -76,7 +78,6 @@ MODULE_LICENSE ("GPL"); /*----------------------------------------------------------------------*/ #define GADGETFS_MAGIC 0xaee71ee7 -#define DMA_ADDR_INVALID (~(dma_addr_t)0) /* /dev/gadget/$CHIP represents ep0 and the whole device */ enum ep0_state { @@ -438,11 +439,9 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) /* FIXME writebehind for O_NONBLOCK and poll(), qlen = 1 */ value = -ENOMEM; - kbuf = kmalloc (len, GFP_KERNEL); - if (!kbuf) - goto free1; - if (copy_from_user (kbuf, buf, len)) { - value = -EFAULT; + kbuf = memdup_user(buf, len); + if (!kbuf) { + value = PTR_ERR(kbuf); goto free1; } @@ -451,7 +450,6 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) data->name, len, (int) value); free1: mutex_unlock(&data->lock); - kfree (kbuf); return value; } @@ -514,13 +512,16 @@ static long ep_ioctl(struct file *fd, unsigned code, unsigned long value) struct kiocb_priv { struct usb_request *req; struct ep_data *epdata; + struct kiocb *iocb; + struct mm_struct *mm; + struct work_struct work; void *buf; const struct iovec *iv; unsigned long nr_segs; unsigned actual; }; -static int ep_aio_cancel(struct kiocb *iocb, struct io_event *e) +static int ep_aio_cancel(struct kiocb *iocb) { struct kiocb_priv *priv = iocb->private; struct ep_data *epdata; @@ -529,7 +530,6 @@ static int ep_aio_cancel(struct kiocb *iocb, struct io_event *e) local_irq_disable(); epdata = priv->epdata; // spin_lock(&epdata->dev->lock); - kiocbSetCancelled(iocb); if (likely(epdata && epdata->ep && priv->req)) value = usb_ep_dequeue (epdata->ep, priv->req); else @@ -537,19 +537,15 @@ static int ep_aio_cancel(struct kiocb *iocb, struct io_event *e) // spin_unlock(&epdata->dev->lock); local_irq_enable(); - aio_put_req(iocb); return value; } -static ssize_t ep_aio_read_retry(struct kiocb *iocb) +static ssize_t ep_copy_to_user(struct kiocb_priv *priv) { - struct kiocb_priv *priv = iocb->private; ssize_t len, total; void *to_copy; int i; - /* we "retry" to get the right mm context for this: */ - /* copy stuff into user buffers */ total = priv->actual; len = 0; @@ -569,9 +565,26 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb) if (total == 0) break; } + + return len; +} + +static void ep_user_copy_worker(struct work_struct *work) +{ + struct kiocb_priv *priv = container_of(work, struct kiocb_priv, work); + struct mm_struct *mm = priv->mm; + struct kiocb *iocb = priv->iocb; + size_t ret; + + use_mm(mm); + ret = ep_copy_to_user(priv); + unuse_mm(mm); + + /* completing the iocb can drop the ctx and mm, don't touch mm after */ + aio_complete(iocb, ret, ret); + kfree(priv->buf); kfree(priv); - return len; } static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req) @@ -597,14 +610,14 @@ static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req) aio_complete(iocb, req->actual ? req->actual : req->status, req->status); } else { - /* retry() won't report both; so we hide some faults */ + /* ep_copy_to_user() won't report both; we hide some faults */ if (unlikely(0 != req->status)) DBG(epdata->dev, "%s fault %d len %d\n", ep->name, req->status, req->actual); priv->buf = req->buf; priv->actual = req->actual; - kick_iocb(iocb); + schedule_work(&priv->work); } spin_unlock(&epdata->dev->lock); @@ -634,8 +647,10 @@ fail: return value; } iocb->private = priv; + priv->iocb = iocb; priv->iv = iv; priv->nr_segs = nr_segs; + INIT_WORK(&priv->work, ep_user_copy_worker); value = get_ready_ep(iocb->ki_filp->f_flags, epdata); if (unlikely(value < 0)) { @@ -643,10 +658,11 @@ fail: goto fail; } - iocb->ki_cancel = ep_aio_cancel; + kiocb_set_cancel_fn(iocb, ep_aio_cancel); get_ep(epdata); priv->epdata = epdata; priv->actual = 0; + priv->mm = current->mm; /* mm teardown waits for iocbs in exit_aio() */ /* each kiocb is coupled to one usb_request, but we can't * allocate or submit those if the host disconnected. @@ -675,7 +691,7 @@ fail: kfree(priv); put_ep(epdata); } else - value = (iv ? -EIOCBRETRY : -EIOCBQUEUED); + value = -EIOCBQUEUED; return value; } @@ -689,12 +705,11 @@ ep_aio_read(struct kiocb *iocb, const struct iovec *iov, if (unlikely(usb_endpoint_dir_in(&epdata->desc))) return -EINVAL; - buf = kmalloc(iocb->ki_left, GFP_KERNEL); + buf = kmalloc(iocb->ki_nbytes, GFP_KERNEL); if (unlikely(!buf)) return -ENOMEM; - iocb->ki_retry = ep_aio_read_retry; - return ep_aio_rwtail(iocb, buf, iocb->ki_left, epdata, iov, nr_segs); + return ep_aio_rwtail(iocb, buf, iocb->ki_nbytes, epdata, iov, nr_segs); } static ssize_t @@ -709,7 +724,7 @@ ep_aio_write(struct kiocb *iocb, const struct iovec *iov, if (unlikely(!usb_endpoint_dir_in(&epdata->desc))) return -EINVAL; - buf = kmalloc(iocb->ki_left, GFP_KERNEL); + buf = kmalloc(iocb->ki_nbytes, GFP_KERNEL); if (unlikely(!buf)) return -ENOMEM; @@ -828,7 +843,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) if (value == 0) data->state = STATE_EP_ENABLED; break; -#ifdef CONFIG_USB_GADGET_DUALSPEED case USB_SPEED_HIGH: /* fails if caller didn't provide that descriptor... */ ep->desc = &data->hs_desc; @@ -836,7 +850,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) if (value == 0) data->state = STATE_EP_ENABLED; break; -#endif default: DBG(data->dev, "unconnected, %s init abandoned\n", data->name); @@ -890,7 +903,6 @@ ep_open (struct inode *inode, struct file *fd) /* used before endpoint configuration */ static const struct file_operations ep_config_operations = { - .owner = THIS_MODULE, .llseek = no_llseek, .open = ep_open, @@ -920,7 +932,6 @@ static void clean_req (struct usb_ep *ep, struct usb_request *req) if (req->buf != dev->rbuf) { kfree(req->buf); req->buf = dev->rbuf; - req->dma = DMA_ADDR_INVALID; } req->complete = epio_complete; dev->setup_out_ready = 0; @@ -1043,6 +1054,8 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr) // FIXME don't call this with the spinlock held ... if (copy_to_user (buf, dev->req->buf, len)) retval = -EFAULT; + else + retval = len; clean_req (dev->gadget->ep0, dev->req); /* NOTE userspace can't yet choose to stall */ } @@ -1251,12 +1264,13 @@ dev_release (struct inode *inode, struct file *fd) kfree (dev->buf); dev->buf = NULL; - put_dev (dev); /* other endpoints were all decoupled from this device */ spin_lock_irq(&dev->lock); dev->state = STATE_DEV_DISABLED; spin_unlock_irq(&dev->lock); + + put_dev (dev); return 0; } @@ -1322,7 +1336,6 @@ static const struct file_operations ep0_io_operations = { * Unrecognized ep0 requests may be handled in user space. */ -#ifdef CONFIG_USB_GADGET_DUALSPEED static void make_qualifier (struct dev_data *dev) { struct usb_qualifier_descriptor qual; @@ -1345,7 +1358,6 @@ static void make_qualifier (struct dev_data *dev) memcpy (dev->rbuf, &qual, sizeof qual); } -#endif static int config_buf (struct dev_data *dev, u8 type, unsigned index) @@ -1410,7 +1422,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) dev->setup_abort = 1; req->buf = dev->rbuf; - req->dma = DMA_ADDR_INVALID; req->context = NULL; value = -EOPNOTSUPP; switch (ctrl->bRequest) { @@ -1425,7 +1436,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) dev->dev->bMaxPacketSize0 = dev->gadget->ep0->maxpacket; req->buf = dev->dev; break; -#ifdef CONFIG_USB_GADGET_DUALSPEED case USB_DT_DEVICE_QUALIFIER: if (!dev->hs_config) break; @@ -1435,7 +1445,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) break; case USB_DT_OTHER_SPEED_CONFIG: // FALLTHROUGH -#endif case USB_DT_CONFIG: value = config_buf (dev, w_value >> 8, @@ -1490,6 +1499,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) */ if (value == 0) { INFO (dev, "configuration #%d\n", dev->current_config); + usb_gadget_set_state(gadget, USB_STATE_CONFIGURED); if (dev->usermode_setup) { dev->setup_can_stall = 0; goto delegate; @@ -1497,7 +1507,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) } break; -#ifndef CONFIG_USB_GADGET_PXA25X +#ifndef CONFIG_USB_PXA25X /* PXA automagically handles this request too */ case USB_REQ_GET_CONFIGURATION: if (ctrl->bRequestType != 0x80) @@ -1569,20 +1579,17 @@ delegate: static void destroy_ep_files (struct dev_data *dev) { - struct list_head *entry, *tmp; - DBG (dev, "%s %d\n", __func__, dev->state); /* dev->state must prevent interference */ -restart: spin_lock_irq (&dev->lock); - list_for_each_safe (entry, tmp, &dev->epfiles) { + while (!list_empty(&dev->epfiles)) { struct ep_data *ep; struct inode *parent; struct dentry *dentry; /* break link to FS */ - ep = list_entry (entry, struct ep_data, epfiles); + ep = list_first_entry (&dev->epfiles, struct ep_data, epfiles); list_del_init (&ep->epfiles); dentry = ep->dentry; ep->dentry = NULL; @@ -1605,8 +1612,7 @@ restart: dput (dentry); mutex_unlock (&parent->i_mutex); - /* fds may still be open */ - goto restart; + spin_lock_irq (&dev->lock); } spin_unlock_irq (&dev->lock); } @@ -1687,8 +1693,8 @@ gadgetfs_unbind (struct usb_gadget *gadget) static struct dev_data *the_device; -static int -gadgetfs_bind (struct usb_gadget *gadget) +static int gadgetfs_bind(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { struct dev_data *dev = the_device; @@ -1765,12 +1771,8 @@ gadgetfs_suspend (struct usb_gadget *gadget) } static struct usb_gadget_driver gadgetfs_driver = { -#ifdef CONFIG_USB_GADGET_DUALSPEED - .max_speed = USB_SPEED_HIGH, -#else - .max_speed = USB_SPEED_FULL, -#endif .function = (char *) driver_desc, + .bind = gadgetfs_bind, .unbind = gadgetfs_unbind, .setup = gadgetfs_setup, .disconnect = gadgetfs_disconnect, @@ -1785,7 +1787,8 @@ static struct usb_gadget_driver gadgetfs_driver = { static void gadgetfs_nop(struct usb_gadget *arg) { } -static int gadgetfs_probe (struct usb_gadget *gadget) +static int gadgetfs_probe(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { CHIP = gadget->name; return -EISNAM; @@ -1793,6 +1796,7 @@ static int gadgetfs_probe (struct usb_gadget *gadget) static struct usb_gadget_driver probe_driver = { .max_speed = USB_SPEED_HIGH, + .bind = gadgetfs_probe, .unbind = gadgetfs_nop, .setup = (void *)gadgetfs_nop, .disconnect = gadgetfs_nop, @@ -1902,7 +1906,12 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) /* triggers gadgetfs_bind(); then we can enumerate. */ spin_unlock_irq (&dev->lock); - value = usb_gadget_probe_driver(&gadgetfs_driver, gadgetfs_bind); + if (dev->hs_config) + gadgetfs_driver.max_speed = USB_SPEED_HIGH; + else + gadgetfs_driver.max_speed = USB_SPEED_FULL; + + value = usb_gadget_probe_driver(&gadgetfs_driver); if (value != 0) { kfree (dev->buf); dev->buf = NULL; @@ -1948,7 +1957,6 @@ dev_open (struct inode *inode, struct file *fd) } static const struct file_operations dev_init_operations = { - .owner = THIS_MODULE, .llseek = no_llseek, .open = dev_open, @@ -1990,8 +1998,8 @@ gadgetfs_make_inode (struct super_block *sb, if (inode) { inode->i_ino = get_next_ino(); inode->i_mode = mode; - inode->i_uid = default_uid; - inode->i_gid = default_gid; + inode->i_uid = make_kuid(&init_user_ns, default_uid); + inode->i_gid = make_kgid(&init_user_ns, default_gid); inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; inode->i_private = data; @@ -2041,7 +2049,8 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent) return -ESRCH; /* fake probe to determine $CHIP */ - (void) usb_gadget_probe_driver(&probe_driver, gadgetfs_probe); + CHIP = NULL; + usb_gadget_probe_driver(&probe_driver); if (!CHIP) return -ENODEV; @@ -2059,10 +2068,8 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent) if (!inode) goto Enomem; inode->i_op = &simple_dir_inode_operations; - if (!(sb->s_root = d_alloc_root (inode))) { - iput(inode); + if (!(sb->s_root = d_make_root (inode))) goto Enomem; - } /* the ep0 file is named after the controller we expect; * user mode code can use it for sanity checks, like we do. @@ -2115,6 +2122,7 @@ static struct file_system_type gadgetfs_type = { .mount = gadgetfs_mount, .kill_sb = gadgetfs_kill_sb, }; +MODULE_ALIAS_FS("gadgetfs"); /*----------------------------------------------------------------------*/ diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c deleted file mode 100644 index e2293c1588e..00000000000 --- a/drivers/usb/gadget/langwell_udc.c +++ /dev/null @@ -1,3465 +0,0 @@ -/* - * Intel Langwell USB Device Controller driver - * Copyright (C) 2008-2009, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - */ - - -/* #undef DEBUG */ -/* #undef VERBOSE_DEBUG */ - -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/timer.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/moduleparam.h> -#include <linux/device.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/usb/otg.h> -#include <linux/pm.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <asm/system.h> -#include <asm/unaligned.h> - -#include "langwell_udc.h" - - -#define DRIVER_DESC "Intel Langwell USB Device Controller driver" -#define DRIVER_VERSION "16 May 2009" - -static const char driver_name[] = "langwell_udc"; -static const char driver_desc[] = DRIVER_DESC; - - -/* for endpoint 0 operations */ -static const struct usb_endpoint_descriptor -langwell_ep0_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 0, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - .wMaxPacketSize = EP0_MAX_PKT_SIZE, -}; - - -/*-------------------------------------------------------------------------*/ -/* debugging */ - -#ifdef VERBOSE_DEBUG -static inline void print_all_registers(struct langwell_udc *dev) -{ - int i; - - /* Capability Registers */ - dev_dbg(&dev->pdev->dev, - "Capability Registers (offset: 0x%04x, length: 0x%08x)\n", - CAP_REG_OFFSET, (u32)sizeof(struct langwell_cap_regs)); - dev_dbg(&dev->pdev->dev, "caplength=0x%02x\n", - readb(&dev->cap_regs->caplength)); - dev_dbg(&dev->pdev->dev, "hciversion=0x%04x\n", - readw(&dev->cap_regs->hciversion)); - dev_dbg(&dev->pdev->dev, "hcsparams=0x%08x\n", - readl(&dev->cap_regs->hcsparams)); - dev_dbg(&dev->pdev->dev, "hccparams=0x%08x\n", - readl(&dev->cap_regs->hccparams)); - dev_dbg(&dev->pdev->dev, "dciversion=0x%04x\n", - readw(&dev->cap_regs->dciversion)); - dev_dbg(&dev->pdev->dev, "dccparams=0x%08x\n", - readl(&dev->cap_regs->dccparams)); - - /* Operational Registers */ - dev_dbg(&dev->pdev->dev, - "Operational Registers (offset: 0x%04x, length: 0x%08x)\n", - OP_REG_OFFSET, (u32)sizeof(struct langwell_op_regs)); - dev_dbg(&dev->pdev->dev, "extsts=0x%08x\n", - readl(&dev->op_regs->extsts)); - dev_dbg(&dev->pdev->dev, "extintr=0x%08x\n", - readl(&dev->op_regs->extintr)); - dev_dbg(&dev->pdev->dev, "usbcmd=0x%08x\n", - readl(&dev->op_regs->usbcmd)); - dev_dbg(&dev->pdev->dev, "usbsts=0x%08x\n", - readl(&dev->op_regs->usbsts)); - dev_dbg(&dev->pdev->dev, "usbintr=0x%08x\n", - readl(&dev->op_regs->usbintr)); - dev_dbg(&dev->pdev->dev, "frindex=0x%08x\n", - readl(&dev->op_regs->frindex)); - dev_dbg(&dev->pdev->dev, "ctrldssegment=0x%08x\n", - readl(&dev->op_regs->ctrldssegment)); - dev_dbg(&dev->pdev->dev, "deviceaddr=0x%08x\n", - readl(&dev->op_regs->deviceaddr)); - dev_dbg(&dev->pdev->dev, "endpointlistaddr=0x%08x\n", - readl(&dev->op_regs->endpointlistaddr)); - dev_dbg(&dev->pdev->dev, "ttctrl=0x%08x\n", - readl(&dev->op_regs->ttctrl)); - dev_dbg(&dev->pdev->dev, "burstsize=0x%08x\n", - readl(&dev->op_regs->burstsize)); - dev_dbg(&dev->pdev->dev, "txfilltuning=0x%08x\n", - readl(&dev->op_regs->txfilltuning)); - dev_dbg(&dev->pdev->dev, "txttfilltuning=0x%08x\n", - readl(&dev->op_regs->txttfilltuning)); - dev_dbg(&dev->pdev->dev, "ic_usb=0x%08x\n", - readl(&dev->op_regs->ic_usb)); - dev_dbg(&dev->pdev->dev, "ulpi_viewport=0x%08x\n", - readl(&dev->op_regs->ulpi_viewport)); - dev_dbg(&dev->pdev->dev, "configflag=0x%08x\n", - readl(&dev->op_regs->configflag)); - dev_dbg(&dev->pdev->dev, "portsc1=0x%08x\n", - readl(&dev->op_regs->portsc1)); - dev_dbg(&dev->pdev->dev, "devlc=0x%08x\n", - readl(&dev->op_regs->devlc)); - dev_dbg(&dev->pdev->dev, "otgsc=0x%08x\n", - readl(&dev->op_regs->otgsc)); - dev_dbg(&dev->pdev->dev, "usbmode=0x%08x\n", - readl(&dev->op_regs->usbmode)); - dev_dbg(&dev->pdev->dev, "endptnak=0x%08x\n", - readl(&dev->op_regs->endptnak)); - dev_dbg(&dev->pdev->dev, "endptnaken=0x%08x\n", - readl(&dev->op_regs->endptnaken)); - dev_dbg(&dev->pdev->dev, "endptsetupstat=0x%08x\n", - readl(&dev->op_regs->endptsetupstat)); - dev_dbg(&dev->pdev->dev, "endptprime=0x%08x\n", - readl(&dev->op_regs->endptprime)); - dev_dbg(&dev->pdev->dev, "endptflush=0x%08x\n", - readl(&dev->op_regs->endptflush)); - dev_dbg(&dev->pdev->dev, "endptstat=0x%08x\n", - readl(&dev->op_regs->endptstat)); - dev_dbg(&dev->pdev->dev, "endptcomplete=0x%08x\n", - readl(&dev->op_regs->endptcomplete)); - - for (i = 0; i < dev->ep_max / 2; i++) { - dev_dbg(&dev->pdev->dev, "endptctrl[%d]=0x%08x\n", - i, readl(&dev->op_regs->endptctrl[i])); - } -} -#else - -#define print_all_registers(dev) do { } while (0) - -#endif /* VERBOSE_DEBUG */ - - -/*-------------------------------------------------------------------------*/ - -#define is_in(ep) (((ep)->ep_num == 0) ? ((ep)->dev->ep0_dir == \ - USB_DIR_IN) : (usb_endpoint_dir_in((ep)->desc))) - -#define DIR_STRING(ep) (is_in(ep) ? "in" : "out") - - -static char *type_string(const struct usb_endpoint_descriptor *desc) -{ - switch (usb_endpoint_type(desc)) { - case USB_ENDPOINT_XFER_BULK: - return "bulk"; - case USB_ENDPOINT_XFER_ISOC: - return "iso"; - case USB_ENDPOINT_XFER_INT: - return "int"; - }; - - return "control"; -} - - -/* configure endpoint control registers */ -static void ep_reset(struct langwell_ep *ep, unsigned char ep_num, - unsigned char is_in, unsigned char ep_type) -{ - struct langwell_udc *dev; - u32 endptctrl; - - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); - if (is_in) { /* TX */ - if (ep_num) - endptctrl |= EPCTRL_TXR; - endptctrl |= EPCTRL_TXE; - endptctrl |= ep_type << EPCTRL_TXT_SHIFT; - } else { /* RX */ - if (ep_num) - endptctrl |= EPCTRL_RXR; - endptctrl |= EPCTRL_RXE; - endptctrl |= ep_type << EPCTRL_RXT_SHIFT; - } - - writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* reset ep0 dQH and endptctrl */ -static void ep0_reset(struct langwell_udc *dev) -{ - struct langwell_ep *ep; - int i; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* ep0 in and out */ - for (i = 0; i < 2; i++) { - ep = &dev->ep[i]; - ep->dev = dev; - - /* ep0 dQH */ - ep->dqh = &dev->ep_dqh[i]; - - /* configure ep0 endpoint capabilities in dQH */ - ep->dqh->dqh_ios = 1; - ep->dqh->dqh_mpl = EP0_MAX_PKT_SIZE; - - /* enable ep0-in HW zero length termination select */ - if (is_in(ep)) - ep->dqh->dqh_zlt = 0; - ep->dqh->dqh_mult = 0; - - ep->dqh->dtd_next = DTD_TERM; - - /* configure ep0 control registers */ - ep_reset(&dev->ep[0], 0, i, USB_ENDPOINT_XFER_CONTROL); - } - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/*-------------------------------------------------------------------------*/ - -/* endpoints operations */ - -/* configure endpoint, making it usable */ -static int langwell_ep_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct langwell_udc *dev; - struct langwell_ep *ep; - u16 max = 0; - unsigned long flags; - int i, retval = 0; - unsigned char zlt, ios = 0, mult = 0; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !desc || ep->desc - || desc->bDescriptorType != USB_DT_ENDPOINT) - return -EINVAL; - - if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - max = usb_endpoint_maxp(desc); - - /* - * disable HW zero length termination select - * driver handles zero length packet through req->req.zero - */ - zlt = 1; - - /* - * sanity check type, direction, address, and then - * initialize the endpoint capabilities fields in dQH - */ - switch (usb_endpoint_type(desc)) { - case USB_ENDPOINT_XFER_CONTROL: - ios = 1; - break; - case USB_ENDPOINT_XFER_BULK: - if ((dev->gadget.speed == USB_SPEED_HIGH - && max != 512) - || (dev->gadget.speed == USB_SPEED_FULL - && max > 64)) { - goto done; - } - break; - case USB_ENDPOINT_XFER_INT: - if (strstr(ep->ep.name, "-iso")) /* bulk is ok */ - goto done; - - switch (dev->gadget.speed) { - case USB_SPEED_HIGH: - if (max <= 1024) - break; - case USB_SPEED_FULL: - if (max <= 64) - break; - default: - if (max <= 8) - break; - goto done; - } - break; - case USB_ENDPOINT_XFER_ISOC: - if (strstr(ep->ep.name, "-bulk") - || strstr(ep->ep.name, "-int")) - goto done; - - switch (dev->gadget.speed) { - case USB_SPEED_HIGH: - if (max <= 1024) - break; - case USB_SPEED_FULL: - if (max <= 1023) - break; - default: - goto done; - } - /* - * FIXME: - * calculate transactions needed for high bandwidth iso - */ - mult = (unsigned char)(1 + ((max >> 11) & 0x03)); - max = max & 0x8ff; /* bit 0~10 */ - /* 3 transactions at most */ - if (mult > 3) - goto done; - break; - default: - goto done; - } - - spin_lock_irqsave(&dev->lock, flags); - - ep->ep.maxpacket = max; - ep->desc = desc; - ep->stopped = 0; - ep->ep_num = usb_endpoint_num(desc); - - /* ep_type */ - ep->ep_type = usb_endpoint_type(desc); - - /* configure endpoint control registers */ - ep_reset(ep, ep->ep_num, is_in(ep), ep->ep_type); - - /* configure endpoint capabilities in dQH */ - i = ep->ep_num * 2 + is_in(ep); - ep->dqh = &dev->ep_dqh[i]; - ep->dqh->dqh_ios = ios; - ep->dqh->dqh_mpl = cpu_to_le16(max); - ep->dqh->dqh_zlt = zlt; - ep->dqh->dqh_mult = mult; - ep->dqh->dtd_next = DTD_TERM; - - dev_dbg(&dev->pdev->dev, "enabled %s (ep%d%s-%s), max %04x\n", - _ep->name, - ep->ep_num, - DIR_STRING(ep), - type_string(desc), - max); - - spin_unlock_irqrestore(&dev->lock, flags); -done: - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return retval; -} - - -/*-------------------------------------------------------------------------*/ - -/* retire a request */ -static void done(struct langwell_ep *ep, struct langwell_request *req, - int status) -{ - struct langwell_udc *dev = ep->dev; - unsigned stopped = ep->stopped; - struct langwell_dtd *curr_dtd, *next_dtd; - int i; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* remove the req from ep->queue */ - list_del_init(&req->queue); - - if (req->req.status == -EINPROGRESS) - req->req.status = status; - else - status = req->req.status; - - /* free dTD for the request */ - next_dtd = req->head; - for (i = 0; i < req->dtd_count; i++) { - curr_dtd = next_dtd; - if (i != req->dtd_count - 1) - next_dtd = curr_dtd->next_dtd_virt; - dma_pool_free(dev->dtd_pool, curr_dtd, curr_dtd->dtd_dma); - } - - if (req->mapped) { - dma_unmap_single(&dev->pdev->dev, - req->req.dma, req->req.length, - is_in(ep) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else - dma_sync_single_for_cpu(&dev->pdev->dev, req->req.dma, - req->req.length, - is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - - if (status != -ESHUTDOWN) - dev_dbg(&dev->pdev->dev, - "complete %s, req %p, stat %d, len %u/%u\n", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - /* don't modify queue heads during completion callback */ - ep->stopped = 1; - - spin_unlock(&dev->lock); - /* complete routine from gadget driver */ - if (req->req.complete) - req->req.complete(&ep->ep, &req->req); - - spin_lock(&dev->lock); - ep->stopped = stopped; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -static void langwell_ep_fifo_flush(struct usb_ep *_ep); - -/* delete all endpoint requests, called with spinlock held */ -static void nuke(struct langwell_ep *ep, int status) -{ - /* called with spinlock held */ - ep->stopped = 1; - - /* endpoint fifo flush */ - if (&ep->ep && ep->desc) - langwell_ep_fifo_flush(&ep->ep); - - while (!list_empty(&ep->queue)) { - struct langwell_request *req = NULL; - req = list_entry(ep->queue.next, struct langwell_request, - queue); - done(ep, req, status); - } -} - - -/*-------------------------------------------------------------------------*/ - -/* endpoint is no longer usable */ -static int langwell_ep_disable(struct usb_ep *_ep) -{ - struct langwell_ep *ep; - unsigned long flags; - struct langwell_udc *dev; - int ep_num; - u32 endptctrl; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !ep->desc) - return -EINVAL; - - spin_lock_irqsave(&dev->lock, flags); - - /* disable endpoint control register */ - ep_num = ep->ep_num; - endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); - if (is_in(ep)) - endptctrl &= ~EPCTRL_TXE; - else - endptctrl &= ~EPCTRL_RXE; - writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); - - /* nuke all pending requests (does flush) */ - nuke(ep, -ESHUTDOWN); - - ep->desc = NULL; - ep->stopped = 1; - - spin_unlock_irqrestore(&dev->lock, flags); - - dev_dbg(&dev->pdev->dev, "disabled %s\n", _ep->name); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - - return 0; -} - - -/* allocate a request object to use with this endpoint */ -static struct usb_request *langwell_alloc_request(struct usb_ep *_ep, - gfp_t gfp_flags) -{ - struct langwell_ep *ep; - struct langwell_udc *dev; - struct langwell_request *req = NULL; - - if (!_ep) - return NULL; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - req = kzalloc(sizeof(*req), gfp_flags); - if (!req) - return NULL; - - req->req.dma = DMA_ADDR_INVALID; - INIT_LIST_HEAD(&req->queue); - - dev_vdbg(&dev->pdev->dev, "alloc request for %s\n", _ep->name); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return &req->req; -} - - -/* free a request object */ -static void langwell_free_request(struct usb_ep *_ep, - struct usb_request *_req) -{ - struct langwell_ep *ep; - struct langwell_udc *dev; - struct langwell_request *req = NULL; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !_req) - return; - - req = container_of(_req, struct langwell_request, req); - WARN_ON(!list_empty(&req->queue)); - - if (_req) - kfree(req); - - dev_vdbg(&dev->pdev->dev, "free request for %s\n", _ep->name); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/*-------------------------------------------------------------------------*/ - -/* queue dTD and PRIME endpoint */ -static int queue_dtd(struct langwell_ep *ep, struct langwell_request *req) -{ - u32 bit_mask, usbcmd, endptstat, dtd_dma; - u8 dtd_status; - int i; - struct langwell_dqh *dqh; - struct langwell_udc *dev; - - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - i = ep->ep_num * 2 + is_in(ep); - dqh = &dev->ep_dqh[i]; - - if (ep->ep_num) - dev_vdbg(&dev->pdev->dev, "%s\n", ep->name); - else - /* ep0 */ - dev_vdbg(&dev->pdev->dev, "%s-%s\n", ep->name, DIR_STRING(ep)); - - dev_vdbg(&dev->pdev->dev, "ep_dqh[%d] addr: 0x%p\n", - i, &(dev->ep_dqh[i])); - - bit_mask = is_in(ep) ? - (1 << (ep->ep_num + 16)) : (1 << (ep->ep_num)); - - dev_vdbg(&dev->pdev->dev, "bit_mask = 0x%08x\n", bit_mask); - - /* check if the pipe is empty */ - if (!(list_empty(&ep->queue))) { - /* add dTD to the end of linked list */ - struct langwell_request *lastreq; - lastreq = list_entry(ep->queue.prev, - struct langwell_request, queue); - - lastreq->tail->dtd_next = - cpu_to_le32(req->head->dtd_dma & DTD_NEXT_MASK); - - /* read prime bit, if 1 goto out */ - if (readl(&dev->op_regs->endptprime) & bit_mask) - goto out; - - do { - /* set ATDTW bit in USBCMD */ - usbcmd = readl(&dev->op_regs->usbcmd); - writel(usbcmd | CMD_ATDTW, &dev->op_regs->usbcmd); - - /* read correct status bit */ - endptstat = readl(&dev->op_regs->endptstat) & bit_mask; - - } while (!(readl(&dev->op_regs->usbcmd) & CMD_ATDTW)); - - /* write ATDTW bit to 0 */ - usbcmd = readl(&dev->op_regs->usbcmd); - writel(usbcmd & ~CMD_ATDTW, &dev->op_regs->usbcmd); - - if (endptstat) - goto out; - } - - /* write dQH next pointer and terminate bit to 0 */ - dtd_dma = req->head->dtd_dma & DTD_NEXT_MASK; - dqh->dtd_next = cpu_to_le32(dtd_dma); - - /* clear active and halt bit */ - dtd_status = (u8) ~(DTD_STS_ACTIVE | DTD_STS_HALTED); - dqh->dtd_status &= dtd_status; - dev_vdbg(&dev->pdev->dev, "dqh->dtd_status = 0x%x\n", dqh->dtd_status); - - /* ensure that updates to the dQH will occur before priming */ - wmb(); - - /* write 1 to endptprime register to PRIME endpoint */ - bit_mask = is_in(ep) ? (1 << (ep->ep_num + 16)) : (1 << ep->ep_num); - dev_vdbg(&dev->pdev->dev, "endprime bit_mask = 0x%08x\n", bit_mask); - writel(bit_mask, &dev->op_regs->endptprime); -out: - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* fill in the dTD structure to build a transfer descriptor */ -static struct langwell_dtd *build_dtd(struct langwell_request *req, - unsigned *length, dma_addr_t *dma, int *is_last) -{ - u32 buf_ptr; - struct langwell_dtd *dtd; - struct langwell_udc *dev; - int i; - - dev = req->ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* the maximum transfer length, up to 16k bytes */ - *length = min(req->req.length - req->req.actual, - (unsigned)DTD_MAX_TRANSFER_LENGTH); - - /* create dTD dma_pool resource */ - dtd = dma_pool_alloc(dev->dtd_pool, GFP_KERNEL, dma); - if (dtd == NULL) - return dtd; - dtd->dtd_dma = *dma; - - /* initialize buffer page pointers */ - buf_ptr = (u32)(req->req.dma + req->req.actual); - for (i = 0; i < 5; i++) - dtd->dtd_buf[i] = cpu_to_le32(buf_ptr + i * PAGE_SIZE); - - req->req.actual += *length; - - /* fill in total bytes with transfer size */ - dtd->dtd_total = cpu_to_le16(*length); - dev_vdbg(&dev->pdev->dev, "dtd->dtd_total = %d\n", dtd->dtd_total); - - /* set is_last flag if req->req.zero is set or not */ - if (req->req.zero) { - if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) - *is_last = 1; - else - *is_last = 0; - } else if (req->req.length == req->req.actual) { - *is_last = 1; - } else - *is_last = 0; - - if (*is_last == 0) - dev_vdbg(&dev->pdev->dev, "multi-dtd request!\n"); - - /* set interrupt on complete bit for the last dTD */ - if (*is_last && !req->req.no_interrupt) - dtd->dtd_ioc = 1; - - /* set multiplier override 0 for non-ISO and non-TX endpoint */ - dtd->dtd_multo = 0; - - /* set the active bit of status field to 1 */ - dtd->dtd_status = DTD_STS_ACTIVE; - dev_vdbg(&dev->pdev->dev, "dtd->dtd_status = 0x%02x\n", - dtd->dtd_status); - - dev_vdbg(&dev->pdev->dev, "length = %d, dma addr= 0x%08x\n", - *length, (int)*dma); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return dtd; -} - - -/* generate dTD linked list for a request */ -static int req_to_dtd(struct langwell_request *req) -{ - unsigned count; - int is_last, is_first = 1; - struct langwell_dtd *dtd, *last_dtd = NULL; - struct langwell_udc *dev; - dma_addr_t dma; - - dev = req->ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - do { - dtd = build_dtd(req, &count, &dma, &is_last); - if (dtd == NULL) - return -ENOMEM; - - if (is_first) { - is_first = 0; - req->head = dtd; - } else { - last_dtd->dtd_next = cpu_to_le32(dma); - last_dtd->next_dtd_virt = dtd; - } - last_dtd = dtd; - req->dtd_count++; - } while (!is_last); - - /* set terminate bit to 1 for the last dTD */ - dtd->dtd_next = DTD_TERM; - - req->tail = dtd; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* queue (submits) an I/O requests to an endpoint */ -static int langwell_ep_queue(struct usb_ep *_ep, struct usb_request *_req, - gfp_t gfp_flags) -{ - struct langwell_request *req; - struct langwell_ep *ep; - struct langwell_udc *dev; - unsigned long flags; - int is_iso = 0, zlflag = 0; - - /* always require a cpu-view buffer */ - req = container_of(_req, struct langwell_request, req); - ep = container_of(_ep, struct langwell_ep, ep); - - if (!_req || !_req->complete || !_req->buf - || !list_empty(&req->queue)) { - return -EINVAL; - } - - if (unlikely(!_ep || !ep->desc)) - return -EINVAL; - - dev = ep->dev; - req->ep = ep; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (usb_endpoint_xfer_isoc(ep->desc)) { - if (req->req.length > ep->ep.maxpacket) - return -EMSGSIZE; - is_iso = 1; - } - - if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) - return -ESHUTDOWN; - - /* set up dma mapping in case the caller didn't */ - if (_req->dma == DMA_ADDR_INVALID) { - /* WORKAROUND: WARN_ON(size == 0) */ - if (_req->length == 0) { - dev_vdbg(&dev->pdev->dev, "req->length: 0->1\n"); - zlflag = 1; - _req->length++; - } - - _req->dma = dma_map_single(&dev->pdev->dev, - _req->buf, _req->length, - is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - if (zlflag && (_req->length == 1)) { - dev_vdbg(&dev->pdev->dev, "req->length: 1->0\n"); - zlflag = 0; - _req->length = 0; - } - - req->mapped = 1; - dev_vdbg(&dev->pdev->dev, "req->mapped = 1\n"); - } else { - dma_sync_single_for_device(&dev->pdev->dev, - _req->dma, _req->length, - is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 0; - dev_vdbg(&dev->pdev->dev, "req->mapped = 0\n"); - } - - dev_dbg(&dev->pdev->dev, - "%s queue req %p, len %u, buf %p, dma 0x%08x\n", - _ep->name, - _req, _req->length, _req->buf, (int)_req->dma); - - _req->status = -EINPROGRESS; - _req->actual = 0; - req->dtd_count = 0; - - spin_lock_irqsave(&dev->lock, flags); - - /* build and put dTDs to endpoint queue */ - if (!req_to_dtd(req)) { - queue_dtd(ep, req); - } else { - spin_unlock_irqrestore(&dev->lock, flags); - return -ENOMEM; - } - - /* update ep0 state */ - if (ep->ep_num == 0) - dev->ep0_state = DATA_STATE_XMIT; - - if (likely(req != NULL)) { - list_add_tail(&req->queue, &ep->queue); - dev_vdbg(&dev->pdev->dev, "list_add_tail()\n"); - } - - spin_unlock_irqrestore(&dev->lock, flags); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* dequeue (cancels, unlinks) an I/O request from an endpoint */ -static int langwell_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct langwell_ep *ep; - struct langwell_udc *dev; - struct langwell_request *req; - unsigned long flags; - int stopped, ep_num, retval = 0; - u32 endptctrl; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !ep->desc || !_req) - return -EINVAL; - - if (!dev->driver) - return -ESHUTDOWN; - - spin_lock_irqsave(&dev->lock, flags); - stopped = ep->stopped; - - /* quiesce dma while we patch the queue */ - ep->stopped = 1; - ep_num = ep->ep_num; - - /* disable endpoint control register */ - endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); - if (is_in(ep)) - endptctrl &= ~EPCTRL_TXE; - else - endptctrl &= ~EPCTRL_RXE; - writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); - - /* make sure it's still queued on this endpoint */ - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) - break; - } - - if (&req->req != _req) { - retval = -EINVAL; - goto done; - } - - /* queue head may be partially complete. */ - if (ep->queue.next == &req->queue) { - dev_dbg(&dev->pdev->dev, "unlink (%s) dma\n", _ep->name); - _req->status = -ECONNRESET; - langwell_ep_fifo_flush(&ep->ep); - - /* not the last request in endpoint queue */ - if (likely(ep->queue.next == &req->queue)) { - struct langwell_dqh *dqh; - struct langwell_request *next_req; - - dqh = ep->dqh; - next_req = list_entry(req->queue.next, - struct langwell_request, queue); - - /* point the dQH to the first dTD of next request */ - writel((u32) next_req->head, &dqh->dqh_current); - } - } else { - struct langwell_request *prev_req; - - prev_req = list_entry(req->queue.prev, - struct langwell_request, queue); - writel(readl(&req->tail->dtd_next), - &prev_req->tail->dtd_next); - } - - done(ep, req, -ECONNRESET); - -done: - /* enable endpoint again */ - endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); - if (is_in(ep)) - endptctrl |= EPCTRL_TXE; - else - endptctrl |= EPCTRL_RXE; - writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); - - ep->stopped = stopped; - spin_unlock_irqrestore(&dev->lock, flags); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return retval; -} - - -/*-------------------------------------------------------------------------*/ - -/* endpoint set/clear halt */ -static void ep_set_halt(struct langwell_ep *ep, int value) -{ - u32 endptctrl = 0; - int ep_num; - struct langwell_udc *dev = ep->dev; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - ep_num = ep->ep_num; - endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); - - /* value: 1 - set halt, 0 - clear halt */ - if (value) { - /* set the stall bit */ - if (is_in(ep)) - endptctrl |= EPCTRL_TXS; - else - endptctrl |= EPCTRL_RXS; - } else { - /* clear the stall bit and reset data toggle */ - if (is_in(ep)) { - endptctrl &= ~EPCTRL_TXS; - endptctrl |= EPCTRL_TXR; - } else { - endptctrl &= ~EPCTRL_RXS; - endptctrl |= EPCTRL_RXR; - } - } - - writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* set the endpoint halt feature */ -static int langwell_ep_set_halt(struct usb_ep *_ep, int value) -{ - struct langwell_ep *ep; - struct langwell_udc *dev; - unsigned long flags; - int retval = 0; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !ep->desc) - return -EINVAL; - - if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - if (usb_endpoint_xfer_isoc(ep->desc)) - return -EOPNOTSUPP; - - spin_lock_irqsave(&dev->lock, flags); - - /* - * attempt to halt IN ep will fail if any transfer requests - * are still queue - */ - if (!list_empty(&ep->queue) && is_in(ep) && value) { - /* IN endpoint FIFO holds bytes */ - dev_dbg(&dev->pdev->dev, "%s FIFO holds bytes\n", _ep->name); - retval = -EAGAIN; - goto done; - } - - /* endpoint set/clear halt */ - if (ep->ep_num) { - ep_set_halt(ep, value); - } else { /* endpoint 0 */ - dev->ep0_state = WAIT_FOR_SETUP; - dev->ep0_dir = USB_DIR_OUT; - } -done: - spin_unlock_irqrestore(&dev->lock, flags); - dev_dbg(&dev->pdev->dev, "%s %s halt\n", - _ep->name, value ? "set" : "clear"); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return retval; -} - - -/* set the halt feature and ignores clear requests */ -static int langwell_ep_set_wedge(struct usb_ep *_ep) -{ - struct langwell_ep *ep; - struct langwell_udc *dev; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !ep->desc) - return -EINVAL; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return usb_ep_set_halt(_ep); -} - - -/* flush contents of a fifo */ -static void langwell_ep_fifo_flush(struct usb_ep *_ep) -{ - struct langwell_ep *ep; - struct langwell_udc *dev; - u32 flush_bit; - unsigned long timeout; - - ep = container_of(_ep, struct langwell_ep, ep); - dev = ep->dev; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (!_ep || !ep->desc) { - dev_vdbg(&dev->pdev->dev, "ep or ep->desc is NULL\n"); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return; - } - - dev_vdbg(&dev->pdev->dev, "%s-%s fifo flush\n", - _ep->name, DIR_STRING(ep)); - - /* flush endpoint buffer */ - if (ep->ep_num == 0) - flush_bit = (1 << 16) | 1; - else if (is_in(ep)) - flush_bit = 1 << (ep->ep_num + 16); /* TX */ - else - flush_bit = 1 << ep->ep_num; /* RX */ - - /* wait until flush complete */ - timeout = jiffies + FLUSH_TIMEOUT; - do { - writel(flush_bit, &dev->op_regs->endptflush); - while (readl(&dev->op_regs->endptflush)) { - if (time_after(jiffies, timeout)) { - dev_err(&dev->pdev->dev, "ep flush timeout\n"); - goto done; - } - cpu_relax(); - } - } while (readl(&dev->op_regs->endptstat) & flush_bit); -done: - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* endpoints operations structure */ -static const struct usb_ep_ops langwell_ep_ops = { - - /* configure endpoint, making it usable */ - .enable = langwell_ep_enable, - - /* endpoint is no longer usable */ - .disable = langwell_ep_disable, - - /* allocate a request object to use with this endpoint */ - .alloc_request = langwell_alloc_request, - - /* free a request object */ - .free_request = langwell_free_request, - - /* queue (submits) an I/O requests to an endpoint */ - .queue = langwell_ep_queue, - - /* dequeue (cancels, unlinks) an I/O request from an endpoint */ - .dequeue = langwell_ep_dequeue, - - /* set the endpoint halt feature */ - .set_halt = langwell_ep_set_halt, - - /* set the halt feature and ignores clear requests */ - .set_wedge = langwell_ep_set_wedge, - - /* flush contents of a fifo */ - .fifo_flush = langwell_ep_fifo_flush, -}; - - -/*-------------------------------------------------------------------------*/ - -/* device controller usb_gadget_ops structure */ - -/* returns the current frame number */ -static int langwell_get_frame(struct usb_gadget *_gadget) -{ - struct langwell_udc *dev; - u16 retval; - - if (!_gadget) - return -ENODEV; - - dev = container_of(_gadget, struct langwell_udc, gadget); - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - retval = readl(&dev->op_regs->frindex) & FRINDEX_MASK; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return retval; -} - - -/* enter or exit PHY low power state */ -static void langwell_phy_low_power(struct langwell_udc *dev, bool flag) -{ - u32 devlc; - u8 devlc_byte2; - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - devlc = readl(&dev->op_regs->devlc); - dev_vdbg(&dev->pdev->dev, "devlc = 0x%08x\n", devlc); - - if (flag) - devlc |= LPM_PHCD; - else - devlc &= ~LPM_PHCD; - - /* FIXME: workaround for Langwell A1/A2/A3 sighting */ - devlc_byte2 = (devlc >> 16) & 0xff; - writeb(devlc_byte2, (u8 *)&dev->op_regs->devlc + 2); - - devlc = readl(&dev->op_regs->devlc); - dev_vdbg(&dev->pdev->dev, - "%s PHY low power suspend, devlc = 0x%08x\n", - flag ? "enter" : "exit", devlc); -} - - -/* tries to wake up the host connected to this gadget */ -static int langwell_wakeup(struct usb_gadget *_gadget) -{ - struct langwell_udc *dev; - u32 portsc1; - unsigned long flags; - - if (!_gadget) - return 0; - - dev = container_of(_gadget, struct langwell_udc, gadget); - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* remote wakeup feature not enabled by host */ - if (!dev->remote_wakeup) { - dev_info(&dev->pdev->dev, "remote wakeup is disabled\n"); - return -ENOTSUPP; - } - - spin_lock_irqsave(&dev->lock, flags); - - portsc1 = readl(&dev->op_regs->portsc1); - if (!(portsc1 & PORTS_SUSP)) { - spin_unlock_irqrestore(&dev->lock, flags); - return 0; - } - - /* LPM L1 to L0 or legacy remote wakeup */ - if (dev->lpm && dev->lpm_state == LPM_L1) - dev_info(&dev->pdev->dev, "LPM L1 to L0 remote wakeup\n"); - else - dev_info(&dev->pdev->dev, "device remote wakeup\n"); - - /* exit PHY low power suspend */ - if (dev->pdev->device != 0x0829) - langwell_phy_low_power(dev, 0); - - /* force port resume */ - portsc1 |= PORTS_FPR; - writel(portsc1, &dev->op_regs->portsc1); - - spin_unlock_irqrestore(&dev->lock, flags); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* notify controller that VBUS is powered or not */ -static int langwell_vbus_session(struct usb_gadget *_gadget, int is_active) -{ - struct langwell_udc *dev; - unsigned long flags; - u32 usbcmd; - - if (!_gadget) - return -ENODEV; - - dev = container_of(_gadget, struct langwell_udc, gadget); - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - spin_lock_irqsave(&dev->lock, flags); - dev_vdbg(&dev->pdev->dev, "VBUS status: %s\n", - is_active ? "on" : "off"); - - dev->vbus_active = (is_active != 0); - if (dev->driver && dev->softconnected && dev->vbus_active) { - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd |= CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - } else { - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd &= ~CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - } - - spin_unlock_irqrestore(&dev->lock, flags); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* constrain controller's VBUS power usage */ -static int langwell_vbus_draw(struct usb_gadget *_gadget, unsigned mA) -{ - struct langwell_udc *dev; - - if (!_gadget) - return -ENODEV; - - dev = container_of(_gadget, struct langwell_udc, gadget); - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (dev->transceiver) { - dev_vdbg(&dev->pdev->dev, "otg_set_power\n"); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return otg_set_power(dev->transceiver, mA); - } - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return -ENOTSUPP; -} - - -/* D+ pullup, software-controlled connect/disconnect to USB host */ -static int langwell_pullup(struct usb_gadget *_gadget, int is_on) -{ - struct langwell_udc *dev; - u32 usbcmd; - unsigned long flags; - - if (!_gadget) - return -ENODEV; - - dev = container_of(_gadget, struct langwell_udc, gadget); - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - spin_lock_irqsave(&dev->lock, flags); - dev->softconnected = (is_on != 0); - - if (dev->driver && dev->softconnected && dev->vbus_active) { - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd |= CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - } else { - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd &= ~CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - } - spin_unlock_irqrestore(&dev->lock, flags); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - -static int langwell_start(struct usb_gadget *g, - struct usb_gadget_driver *driver); - -static int langwell_stop(struct usb_gadget *g, - struct usb_gadget_driver *driver); - -/* device controller usb_gadget_ops structure */ -static const struct usb_gadget_ops langwell_ops = { - - /* returns the current frame number */ - .get_frame = langwell_get_frame, - - /* tries to wake up the host connected to this gadget */ - .wakeup = langwell_wakeup, - - /* set the device selfpowered feature, always selfpowered */ - /* .set_selfpowered = langwell_set_selfpowered, */ - - /* notify controller that VBUS is powered or not */ - .vbus_session = langwell_vbus_session, - - /* constrain controller's VBUS power usage */ - .vbus_draw = langwell_vbus_draw, - - /* D+ pullup, software-controlled connect/disconnect to USB host */ - .pullup = langwell_pullup, - - .udc_start = langwell_start, - .udc_stop = langwell_stop, -}; - - -/*-------------------------------------------------------------------------*/ - -/* device controller operations */ - -/* reset device controller */ -static int langwell_udc_reset(struct langwell_udc *dev) -{ - u32 usbcmd, usbmode, devlc, endpointlistaddr; - u8 devlc_byte0, devlc_byte2; - unsigned long timeout; - - if (!dev) - return -EINVAL; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* set controller to stop state */ - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd &= ~CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - - /* reset device controller */ - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd |= CMD_RST; - writel(usbcmd, &dev->op_regs->usbcmd); - - /* wait for reset to complete */ - timeout = jiffies + RESET_TIMEOUT; - while (readl(&dev->op_regs->usbcmd) & CMD_RST) { - if (time_after(jiffies, timeout)) { - dev_err(&dev->pdev->dev, "device reset timeout\n"); - return -ETIMEDOUT; - } - cpu_relax(); - } - - /* set controller to device mode */ - usbmode = readl(&dev->op_regs->usbmode); - usbmode |= MODE_DEVICE; - - /* turn setup lockout off, require setup tripwire in usbcmd */ - usbmode |= MODE_SLOM; - - writel(usbmode, &dev->op_regs->usbmode); - usbmode = readl(&dev->op_regs->usbmode); - dev_vdbg(&dev->pdev->dev, "usbmode=0x%08x\n", usbmode); - - /* Write-Clear setup status */ - writel(0, &dev->op_regs->usbsts); - - /* if support USB LPM, ACK all LPM token */ - if (dev->lpm) { - devlc = readl(&dev->op_regs->devlc); - dev_vdbg(&dev->pdev->dev, "devlc = 0x%08x\n", devlc); - /* FIXME: workaround for Langwell A1/A2/A3 sighting */ - devlc &= ~LPM_STL; /* don't STALL LPM token */ - devlc &= ~LPM_NYT_ACK; /* ACK LPM token */ - devlc_byte0 = devlc & 0xff; - devlc_byte2 = (devlc >> 16) & 0xff; - writeb(devlc_byte0, (u8 *)&dev->op_regs->devlc); - writeb(devlc_byte2, (u8 *)&dev->op_regs->devlc + 2); - devlc = readl(&dev->op_regs->devlc); - dev_vdbg(&dev->pdev->dev, - "ACK LPM token, devlc = 0x%08x\n", devlc); - } - - /* fill endpointlistaddr register */ - endpointlistaddr = dev->ep_dqh_dma; - endpointlistaddr &= ENDPOINTLISTADDR_MASK; - writel(endpointlistaddr, &dev->op_regs->endpointlistaddr); - - dev_vdbg(&dev->pdev->dev, - "dQH base (vir: %p, phy: 0x%08x), endpointlistaddr=0x%08x\n", - dev->ep_dqh, endpointlistaddr, - readl(&dev->op_regs->endpointlistaddr)); - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* reinitialize device controller endpoints */ -static int eps_reinit(struct langwell_udc *dev) -{ - struct langwell_ep *ep; - char name[14]; - int i; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* initialize ep0 */ - ep = &dev->ep[0]; - ep->dev = dev; - strncpy(ep->name, "ep0", sizeof(ep->name)); - ep->ep.name = ep->name; - ep->ep.ops = &langwell_ep_ops; - ep->stopped = 0; - ep->ep.maxpacket = EP0_MAX_PKT_SIZE; - ep->ep_num = 0; - ep->desc = &langwell_ep0_desc; - INIT_LIST_HEAD(&ep->queue); - - ep->ep_type = USB_ENDPOINT_XFER_CONTROL; - - /* initialize other endpoints */ - for (i = 2; i < dev->ep_max; i++) { - ep = &dev->ep[i]; - if (i % 2) - snprintf(name, sizeof(name), "ep%din", i / 2); - else - snprintf(name, sizeof(name), "ep%dout", i / 2); - ep->dev = dev; - strncpy(ep->name, name, sizeof(ep->name)); - ep->ep.name = ep->name; - - ep->ep.ops = &langwell_ep_ops; - ep->stopped = 0; - ep->ep.maxpacket = (unsigned short) ~0; - ep->ep_num = i / 2; - - INIT_LIST_HEAD(&ep->queue); - list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); - } - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* enable interrupt and set controller to run state */ -static void langwell_udc_start(struct langwell_udc *dev) -{ - u32 usbintr, usbcmd; - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* enable interrupts */ - usbintr = INTR_ULPIE /* ULPI */ - | INTR_SLE /* suspend */ - /* | INTR_SRE SOF received */ - | INTR_URE /* USB reset */ - | INTR_AAE /* async advance */ - | INTR_SEE /* system error */ - | INTR_FRE /* frame list rollover */ - | INTR_PCE /* port change detect */ - | INTR_UEE /* USB error interrupt */ - | INTR_UE; /* USB interrupt */ - writel(usbintr, &dev->op_regs->usbintr); - - /* clear stopped bit */ - dev->stopped = 0; - - /* set controller to run */ - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd |= CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* disable interrupt and set controller to stop state */ -static void langwell_udc_stop(struct langwell_udc *dev) -{ - u32 usbcmd; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* disable all interrupts */ - writel(0, &dev->op_regs->usbintr); - - /* set stopped bit */ - dev->stopped = 1; - - /* set controller to stop state */ - usbcmd = readl(&dev->op_regs->usbcmd); - usbcmd &= ~CMD_RUNSTOP; - writel(usbcmd, &dev->op_regs->usbcmd); - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* stop all USB activities */ -static void stop_activity(struct langwell_udc *dev) -{ - struct langwell_ep *ep; - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - nuke(&dev->ep[0], -ESHUTDOWN); - - list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { - nuke(ep, -ESHUTDOWN); - } - - /* report disconnect; the driver is already quiesced */ - if (dev->driver) { - spin_unlock(&dev->lock); - dev->driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/*-------------------------------------------------------------------------*/ - -/* device "function" sysfs attribute file */ -static ssize_t show_function(struct device *_dev, - struct device_attribute *attr, char *buf) -{ - struct langwell_udc *dev = dev_get_drvdata(_dev); - - if (!dev->driver || !dev->driver->function - || strlen(dev->driver->function) > PAGE_SIZE) - return 0; - - return scnprintf(buf, PAGE_SIZE, "%s\n", dev->driver->function); -} -static DEVICE_ATTR(function, S_IRUGO, show_function, NULL); - - -static inline enum usb_device_speed lpm_device_speed(u32 reg) -{ - switch (LPM_PSPD(reg)) { - case LPM_SPEED_HIGH: - return USB_SPEED_HIGH; - case LPM_SPEED_FULL: - return USB_SPEED_FULL; - case LPM_SPEED_LOW: - return USB_SPEED_LOW; - default: - return USB_SPEED_UNKNOWN; - } -} - -/* device "langwell_udc" sysfs attribute file */ -static ssize_t show_langwell_udc(struct device *_dev, - struct device_attribute *attr, char *buf) -{ - struct langwell_udc *dev = dev_get_drvdata(_dev); - struct langwell_request *req; - struct langwell_ep *ep = NULL; - char *next; - unsigned size; - unsigned t; - unsigned i; - unsigned long flags; - u32 tmp_reg; - - next = buf; - size = PAGE_SIZE; - spin_lock_irqsave(&dev->lock, flags); - - /* driver basic information */ - t = scnprintf(next, size, - DRIVER_DESC "\n" - "%s version: %s\n" - "Gadget driver: %s\n\n", - driver_name, DRIVER_VERSION, - dev->driver ? dev->driver->driver.name : "(none)"); - size -= t; - next += t; - - /* device registers */ - tmp_reg = readl(&dev->op_regs->usbcmd); - t = scnprintf(next, size, - "USBCMD reg:\n" - "SetupTW: %d\n" - "Run/Stop: %s\n\n", - (tmp_reg & CMD_SUTW) ? 1 : 0, - (tmp_reg & CMD_RUNSTOP) ? "Run" : "Stop"); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->usbsts); - t = scnprintf(next, size, - "USB Status Reg:\n" - "Device Suspend: %d\n" - "Reset Received: %d\n" - "System Error: %s\n" - "USB Error Interrupt: %s\n\n", - (tmp_reg & STS_SLI) ? 1 : 0, - (tmp_reg & STS_URI) ? 1 : 0, - (tmp_reg & STS_SEI) ? "Error" : "No error", - (tmp_reg & STS_UEI) ? "Error detected" : "No error"); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->usbintr); - t = scnprintf(next, size, - "USB Intrrupt Enable Reg:\n" - "Sleep Enable: %d\n" - "SOF Received Enable: %d\n" - "Reset Enable: %d\n" - "System Error Enable: %d\n" - "Port Change Dectected Enable: %d\n" - "USB Error Intr Enable: %d\n" - "USB Intr Enable: %d\n\n", - (tmp_reg & INTR_SLE) ? 1 : 0, - (tmp_reg & INTR_SRE) ? 1 : 0, - (tmp_reg & INTR_URE) ? 1 : 0, - (tmp_reg & INTR_SEE) ? 1 : 0, - (tmp_reg & INTR_PCE) ? 1 : 0, - (tmp_reg & INTR_UEE) ? 1 : 0, - (tmp_reg & INTR_UE) ? 1 : 0); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->frindex); - t = scnprintf(next, size, - "USB Frame Index Reg:\n" - "Frame Number is 0x%08x\n\n", - (tmp_reg & FRINDEX_MASK)); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->deviceaddr); - t = scnprintf(next, size, - "USB Device Address Reg:\n" - "Device Addr is 0x%x\n\n", - USBADR(tmp_reg)); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->endpointlistaddr); - t = scnprintf(next, size, - "USB Endpoint List Address Reg:\n" - "Endpoint List Pointer is 0x%x\n\n", - EPBASE(tmp_reg)); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->portsc1); - t = scnprintf(next, size, - "USB Port Status & Control Reg:\n" - "Port Reset: %s\n" - "Port Suspend Mode: %s\n" - "Over-current Change: %s\n" - "Port Enable/Disable Change: %s\n" - "Port Enabled/Disabled: %s\n" - "Current Connect Status: %s\n" - "LPM Suspend Status: %s\n\n", - (tmp_reg & PORTS_PR) ? "Reset" : "Not Reset", - (tmp_reg & PORTS_SUSP) ? "Suspend " : "Not Suspend", - (tmp_reg & PORTS_OCC) ? "Detected" : "No", - (tmp_reg & PORTS_PEC) ? "Changed" : "Not Changed", - (tmp_reg & PORTS_PE) ? "Enable" : "Not Correct", - (tmp_reg & PORTS_CCS) ? "Attached" : "Not Attached", - (tmp_reg & PORTS_SLP) ? "LPM L1" : "LPM L0"); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->devlc); - t = scnprintf(next, size, - "Device LPM Control Reg:\n" - "Parallel Transceiver : %d\n" - "Serial Transceiver : %d\n" - "Port Speed: %s\n" - "Port Force Full Speed Connenct: %s\n" - "PHY Low Power Suspend Clock: %s\n" - "BmAttributes: %d\n\n", - LPM_PTS(tmp_reg), - (tmp_reg & LPM_STS) ? 1 : 0, - usb_speed_string(lpm_device_speed(tmp_reg)), - (tmp_reg & LPM_PFSC) ? "Force Full Speed" : "Not Force", - (tmp_reg & LPM_PHCD) ? "Disabled" : "Enabled", - LPM_BA(tmp_reg)); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->usbmode); - t = scnprintf(next, size, - "USB Mode Reg:\n" - "Controller Mode is : %s\n\n", ({ - char *s; - switch (MODE_CM(tmp_reg)) { - case MODE_IDLE: - s = "Idle"; break; - case MODE_DEVICE: - s = "Device Controller"; break; - case MODE_HOST: - s = "Host Controller"; break; - default: - s = "None"; break; - } - s; - })); - size -= t; - next += t; - - tmp_reg = readl(&dev->op_regs->endptsetupstat); - t = scnprintf(next, size, - "Endpoint Setup Status Reg:\n" - "SETUP on ep 0x%04x\n\n", - tmp_reg & SETUPSTAT_MASK); - size -= t; - next += t; - - for (i = 0; i < dev->ep_max / 2; i++) { - tmp_reg = readl(&dev->op_regs->endptctrl[i]); - t = scnprintf(next, size, "EP Ctrl Reg [%d]: 0x%08x\n", - i, tmp_reg); - size -= t; - next += t; - } - tmp_reg = readl(&dev->op_regs->endptprime); - t = scnprintf(next, size, "EP Prime Reg: 0x%08x\n\n", tmp_reg); - size -= t; - next += t; - - /* langwell_udc, langwell_ep, langwell_request structure information */ - ep = &dev->ep[0]; - t = scnprintf(next, size, "%s MaxPacketSize: 0x%x, ep_num: %d\n", - ep->ep.name, ep->ep.maxpacket, ep->ep_num); - size -= t; - next += t; - - if (list_empty(&ep->queue)) { - t = scnprintf(next, size, "its req queue is empty\n\n"); - size -= t; - next += t; - } else { - list_for_each_entry(req, &ep->queue, queue) { - t = scnprintf(next, size, - "req %p actual 0x%x length 0x%x buf %p\n", - &req->req, req->req.actual, - req->req.length, req->req.buf); - size -= t; - next += t; - } - } - /* other gadget->eplist ep */ - list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { - if (ep->desc) { - t = scnprintf(next, size, - "\n%s MaxPacketSize: 0x%x, " - "ep_num: %d\n", - ep->ep.name, ep->ep.maxpacket, - ep->ep_num); - size -= t; - next += t; - - if (list_empty(&ep->queue)) { - t = scnprintf(next, size, - "its req queue is empty\n\n"); - size -= t; - next += t; - } else { - list_for_each_entry(req, &ep->queue, queue) { - t = scnprintf(next, size, - "req %p actual 0x%x length " - "0x%x buf %p\n", - &req->req, req->req.actual, - req->req.length, req->req.buf); - size -= t; - next += t; - } - } - } - } - - spin_unlock_irqrestore(&dev->lock, flags); - return PAGE_SIZE - size; -} -static DEVICE_ATTR(langwell_udc, S_IRUGO, show_langwell_udc, NULL); - - -/* device "remote_wakeup" sysfs attribute file */ -static ssize_t store_remote_wakeup(struct device *_dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - struct langwell_udc *dev = dev_get_drvdata(_dev); - unsigned long flags; - ssize_t rc = count; - - if (count > 2) - return -EINVAL; - - if (count > 0 && buf[count-1] == '\n') - ((char *) buf)[count-1] = 0; - - if (buf[0] != '1') - return -EINVAL; - - /* force remote wakeup enabled in case gadget driver doesn't support */ - spin_lock_irqsave(&dev->lock, flags); - dev->remote_wakeup = 1; - dev->dev_status |= (1 << USB_DEVICE_REMOTE_WAKEUP); - spin_unlock_irqrestore(&dev->lock, flags); - - langwell_wakeup(&dev->gadget); - - return rc; -} -static DEVICE_ATTR(remote_wakeup, S_IWUSR, NULL, store_remote_wakeup); - - -/*-------------------------------------------------------------------------*/ - -/* - * when a driver is successfully registered, it will receive - * control requests including set_configuration(), which enables - * non-control requests. then usb traffic follows until a - * disconnect is reported. then a host may connect again, or - * the driver might get unbound. - */ - -static int langwell_start(struct usb_gadget *g, - struct usb_gadget_driver *driver) -{ - struct langwell_udc *dev = gadget_to_langwell(g); - unsigned long flags; - int retval; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - spin_lock_irqsave(&dev->lock, flags); - - /* hook up the driver ... */ - driver->driver.bus = NULL; - dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; - - spin_unlock_irqrestore(&dev->lock, flags); - - retval = device_create_file(&dev->pdev->dev, &dev_attr_function); - if (retval) - goto err; - - dev->usb_state = USB_STATE_ATTACHED; - dev->ep0_state = WAIT_FOR_SETUP; - dev->ep0_dir = USB_DIR_OUT; - - /* enable interrupt and set controller to run state */ - if (dev->got_irq) - langwell_udc_start(dev); - - dev_vdbg(&dev->pdev->dev, - "After langwell_udc_start(), print all registers:\n"); - print_all_registers(dev); - - dev_info(&dev->pdev->dev, "register driver: %s\n", - driver->driver.name); - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - - return 0; - -err: - dev->gadget.dev.driver = NULL; - dev->driver = NULL; - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - - return retval; -} - -/* unregister gadget driver */ -static int langwell_stop(struct usb_gadget *g, - struct usb_gadget_driver *driver) -{ - struct langwell_udc *dev = gadget_to_langwell(g); - unsigned long flags; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* exit PHY low power suspend */ - if (dev->pdev->device != 0x0829) - langwell_phy_low_power(dev, 0); - - /* unbind OTG transceiver */ - if (dev->transceiver) - (void)otg_set_peripheral(dev->transceiver, 0); - - /* disable interrupt and set controller to stop state */ - langwell_udc_stop(dev); - - dev->usb_state = USB_STATE_ATTACHED; - dev->ep0_state = WAIT_FOR_SETUP; - dev->ep0_dir = USB_DIR_OUT; - - spin_lock_irqsave(&dev->lock, flags); - - /* stop all usb activities */ - dev->gadget.speed = USB_SPEED_UNKNOWN; - dev->gadget.dev.driver = NULL; - dev->driver = NULL; - stop_activity(dev); - spin_unlock_irqrestore(&dev->lock, flags); - - device_remove_file(&dev->pdev->dev, &dev_attr_function); - - dev_info(&dev->pdev->dev, "unregistered driver '%s'\n", - driver->driver.name); - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* - * setup tripwire is used as a semaphore to ensure that the setup data - * payload is extracted from a dQH without being corrupted - */ -static void setup_tripwire(struct langwell_udc *dev) -{ - u32 usbcmd, - endptsetupstat; - unsigned long timeout; - struct langwell_dqh *dqh; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* ep0 OUT dQH */ - dqh = &dev->ep_dqh[EP_DIR_OUT]; - - /* Write-Clear endptsetupstat */ - endptsetupstat = readl(&dev->op_regs->endptsetupstat); - writel(endptsetupstat, &dev->op_regs->endptsetupstat); - - /* wait until endptsetupstat is cleared */ - timeout = jiffies + SETUPSTAT_TIMEOUT; - while (readl(&dev->op_regs->endptsetupstat)) { - if (time_after(jiffies, timeout)) { - dev_err(&dev->pdev->dev, "setup_tripwire timeout\n"); - break; - } - cpu_relax(); - } - - /* while a hazard exists when setup packet arrives */ - do { - /* set setup tripwire bit */ - usbcmd = readl(&dev->op_regs->usbcmd); - writel(usbcmd | CMD_SUTW, &dev->op_regs->usbcmd); - - /* copy the setup packet to local buffer */ - memcpy(&dev->local_setup_buff, &dqh->dqh_setup, 8); - } while (!(readl(&dev->op_regs->usbcmd) & CMD_SUTW)); - - /* Write-Clear setup tripwire bit */ - usbcmd = readl(&dev->op_regs->usbcmd); - writel(usbcmd & ~CMD_SUTW, &dev->op_regs->usbcmd); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* protocol ep0 stall, will automatically be cleared on new transaction */ -static void ep0_stall(struct langwell_udc *dev) -{ - u32 endptctrl; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* set TX and RX to stall */ - endptctrl = readl(&dev->op_regs->endptctrl[0]); - endptctrl |= EPCTRL_TXS | EPCTRL_RXS; - writel(endptctrl, &dev->op_regs->endptctrl[0]); - - /* update ep0 state */ - dev->ep0_state = WAIT_FOR_SETUP; - dev->ep0_dir = USB_DIR_OUT; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* PRIME a status phase for ep0 */ -static int prime_status_phase(struct langwell_udc *dev, int dir) -{ - struct langwell_request *req; - struct langwell_ep *ep; - int status = 0; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (dir == EP_DIR_IN) - dev->ep0_dir = USB_DIR_IN; - else - dev->ep0_dir = USB_DIR_OUT; - - ep = &dev->ep[0]; - dev->ep0_state = WAIT_FOR_OUT_STATUS; - - req = dev->status_req; - - req->ep = ep; - req->req.length = 0; - req->req.status = -EINPROGRESS; - req->req.actual = 0; - req->req.complete = NULL; - req->dtd_count = 0; - - if (!req_to_dtd(req)) - status = queue_dtd(ep, req); - else - return -ENOMEM; - - if (status) - dev_err(&dev->pdev->dev, "can't queue ep0 status request\n"); - - list_add_tail(&req->queue, &ep->queue); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return status; -} - - -/* SET_ADDRESS request routine */ -static void set_address(struct langwell_udc *dev, u16 value, - u16 index, u16 length) -{ - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* save the new address to device struct */ - dev->dev_addr = (u8) value; - dev_vdbg(&dev->pdev->dev, "dev->dev_addr = %d\n", dev->dev_addr); - - /* update usb state */ - dev->usb_state = USB_STATE_ADDRESS; - - /* STATUS phase */ - if (prime_status_phase(dev, EP_DIR_IN)) - ep0_stall(dev); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* return endpoint by windex */ -static struct langwell_ep *get_ep_by_windex(struct langwell_udc *dev, - u16 wIndex) -{ - struct langwell_ep *ep; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0) - return &dev->ep[0]; - - list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { - u8 bEndpointAddress; - if (!ep->desc) - continue; - - bEndpointAddress = ep->desc->bEndpointAddress; - if ((wIndex ^ bEndpointAddress) & USB_DIR_IN) - continue; - - if ((wIndex & USB_ENDPOINT_NUMBER_MASK) - == (bEndpointAddress & USB_ENDPOINT_NUMBER_MASK)) - return ep; - } - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return NULL; -} - - -/* return whether endpoint is stalled, 0: not stalled; 1: stalled */ -static int ep_is_stall(struct langwell_ep *ep) -{ - struct langwell_udc *dev = ep->dev; - u32 endptctrl; - int retval; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - endptctrl = readl(&dev->op_regs->endptctrl[ep->ep_num]); - if (is_in(ep)) - retval = endptctrl & EPCTRL_TXS ? 1 : 0; - else - retval = endptctrl & EPCTRL_RXS ? 1 : 0; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return retval; -} - - -/* GET_STATUS request routine */ -static void get_status(struct langwell_udc *dev, u8 request_type, u16 value, - u16 index, u16 length) -{ - struct langwell_request *req; - struct langwell_ep *ep; - u16 status_data = 0; /* 16 bits cpu view status data */ - int status = 0; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - ep = &dev->ep[0]; - - if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { - /* get device status */ - status_data = dev->dev_status; - } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { - /* get interface status */ - status_data = 0; - } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { - /* get endpoint status */ - struct langwell_ep *epn; - epn = get_ep_by_windex(dev, index); - /* stall if endpoint doesn't exist */ - if (!epn) - goto stall; - - status_data = ep_is_stall(epn) << USB_ENDPOINT_HALT; - } - - dev_dbg(&dev->pdev->dev, "get status data: 0x%04x\n", status_data); - - dev->ep0_dir = USB_DIR_IN; - - /* borrow the per device status_req */ - req = dev->status_req; - - /* fill in the reqest structure */ - *((u16 *) req->req.buf) = cpu_to_le16(status_data); - req->ep = ep; - req->req.length = 2; - req->req.status = -EINPROGRESS; - req->req.actual = 0; - req->req.complete = NULL; - req->dtd_count = 0; - - /* prime the data phase */ - if (!req_to_dtd(req)) - status = queue_dtd(ep, req); - else /* no mem */ - goto stall; - - if (status) { - dev_err(&dev->pdev->dev, - "response error on GET_STATUS request\n"); - goto stall; - } - - list_add_tail(&req->queue, &ep->queue); - dev->ep0_state = DATA_STATE_XMIT; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return; -stall: - ep0_stall(dev); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* setup packet interrupt handler */ -static void handle_setup_packet(struct langwell_udc *dev, - struct usb_ctrlrequest *setup) -{ - u16 wValue = le16_to_cpu(setup->wValue); - u16 wIndex = le16_to_cpu(setup->wIndex); - u16 wLength = le16_to_cpu(setup->wLength); - u32 portsc1; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* ep0 fifo flush */ - nuke(&dev->ep[0], -ESHUTDOWN); - - dev_dbg(&dev->pdev->dev, "SETUP %02x.%02x v%04x i%04x l%04x\n", - setup->bRequestType, setup->bRequest, - wValue, wIndex, wLength); - - /* RNDIS gadget delegate */ - if ((setup->bRequestType == 0x21) && (setup->bRequest == 0x00)) { - /* USB_CDC_SEND_ENCAPSULATED_COMMAND */ - goto delegate; - } - - /* USB_CDC_GET_ENCAPSULATED_RESPONSE */ - if ((setup->bRequestType == 0xa1) && (setup->bRequest == 0x01)) { - /* USB_CDC_GET_ENCAPSULATED_RESPONSE */ - goto delegate; - } - - /* We process some stardard setup requests here */ - switch (setup->bRequest) { - case USB_REQ_GET_STATUS: - dev_dbg(&dev->pdev->dev, "SETUP: USB_REQ_GET_STATUS\n"); - /* get status, DATA and STATUS phase */ - if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK)) - != (USB_DIR_IN | USB_TYPE_STANDARD)) - break; - get_status(dev, setup->bRequestType, wValue, wIndex, wLength); - goto end; - - case USB_REQ_SET_ADDRESS: - dev_dbg(&dev->pdev->dev, "SETUP: USB_REQ_SET_ADDRESS\n"); - /* STATUS phase */ - if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD - | USB_RECIP_DEVICE)) - break; - set_address(dev, wValue, wIndex, wLength); - goto end; - - case USB_REQ_CLEAR_FEATURE: - case USB_REQ_SET_FEATURE: - /* STATUS phase */ - { - int rc = -EOPNOTSUPP; - if (setup->bRequest == USB_REQ_SET_FEATURE) - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_SET_FEATURE\n"); - else if (setup->bRequest == USB_REQ_CLEAR_FEATURE) - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_CLEAR_FEATURE\n"); - - if ((setup->bRequestType & (USB_RECIP_MASK | USB_TYPE_MASK)) - == (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) { - struct langwell_ep *epn; - epn = get_ep_by_windex(dev, wIndex); - /* stall if endpoint doesn't exist */ - if (!epn) { - ep0_stall(dev); - goto end; - } - - if (wValue != 0 || wLength != 0 - || epn->ep_num > dev->ep_max) - break; - - spin_unlock(&dev->lock); - rc = langwell_ep_set_halt(&epn->ep, - (setup->bRequest == USB_REQ_SET_FEATURE) - ? 1 : 0); - spin_lock(&dev->lock); - - } else if ((setup->bRequestType & (USB_RECIP_MASK - | USB_TYPE_MASK)) == (USB_RECIP_DEVICE - | USB_TYPE_STANDARD)) { - rc = 0; - switch (wValue) { - case USB_DEVICE_REMOTE_WAKEUP: - if (setup->bRequest == USB_REQ_SET_FEATURE) { - dev->remote_wakeup = 1; - dev->dev_status |= (1 << wValue); - } else { - dev->remote_wakeup = 0; - dev->dev_status &= ~(1 << wValue); - } - break; - case USB_DEVICE_TEST_MODE: - dev_dbg(&dev->pdev->dev, "SETUP: TEST MODE\n"); - if ((wIndex & 0xff) || - (dev->gadget.speed != USB_SPEED_HIGH)) - ep0_stall(dev); - - switch (wIndex >> 8) { - case TEST_J: - case TEST_K: - case TEST_SE0_NAK: - case TEST_PACKET: - case TEST_FORCE_EN: - if (prime_status_phase(dev, EP_DIR_IN)) - ep0_stall(dev); - portsc1 = readl(&dev->op_regs->portsc1); - portsc1 |= (wIndex & 0xf00) << 8; - writel(portsc1, &dev->op_regs->portsc1); - goto end; - default: - rc = -EOPNOTSUPP; - } - break; - default: - rc = -EOPNOTSUPP; - break; - } - - if (!gadget_is_otg(&dev->gadget)) - break; - else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) - dev->gadget.b_hnp_enable = 1; - else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT) - dev->gadget.a_hnp_support = 1; - else if (setup->bRequest == - USB_DEVICE_A_ALT_HNP_SUPPORT) - dev->gadget.a_alt_hnp_support = 1; - else - break; - } else - break; - - if (rc == 0) { - if (prime_status_phase(dev, EP_DIR_IN)) - ep0_stall(dev); - } - goto end; - } - - case USB_REQ_GET_DESCRIPTOR: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_GET_DESCRIPTOR\n"); - goto delegate; - - case USB_REQ_SET_DESCRIPTOR: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_SET_DESCRIPTOR unsupported\n"); - goto delegate; - - case USB_REQ_GET_CONFIGURATION: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_GET_CONFIGURATION\n"); - goto delegate; - - case USB_REQ_SET_CONFIGURATION: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_SET_CONFIGURATION\n"); - goto delegate; - - case USB_REQ_GET_INTERFACE: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_GET_INTERFACE\n"); - goto delegate; - - case USB_REQ_SET_INTERFACE: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_SET_INTERFACE\n"); - goto delegate; - - case USB_REQ_SYNCH_FRAME: - dev_dbg(&dev->pdev->dev, - "SETUP: USB_REQ_SYNCH_FRAME unsupported\n"); - goto delegate; - - default: - /* delegate USB standard requests to the gadget driver */ - goto delegate; -delegate: - /* USB requests handled by gadget */ - if (wLength) { - /* DATA phase from gadget, STATUS phase from udc */ - dev->ep0_dir = (setup->bRequestType & USB_DIR_IN) - ? USB_DIR_IN : USB_DIR_OUT; - dev_vdbg(&dev->pdev->dev, - "dev->ep0_dir = 0x%x, wLength = %d\n", - dev->ep0_dir, wLength); - spin_unlock(&dev->lock); - if (dev->driver->setup(&dev->gadget, - &dev->local_setup_buff) < 0) - ep0_stall(dev); - spin_lock(&dev->lock); - dev->ep0_state = (setup->bRequestType & USB_DIR_IN) - ? DATA_STATE_XMIT : DATA_STATE_RECV; - } else { - /* no DATA phase, IN STATUS phase from gadget */ - dev->ep0_dir = USB_DIR_IN; - dev_vdbg(&dev->pdev->dev, - "dev->ep0_dir = 0x%x, wLength = %d\n", - dev->ep0_dir, wLength); - spin_unlock(&dev->lock); - if (dev->driver->setup(&dev->gadget, - &dev->local_setup_buff) < 0) - ep0_stall(dev); - spin_lock(&dev->lock); - dev->ep0_state = WAIT_FOR_OUT_STATUS; - } - break; - } -end: - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* transfer completion, process endpoint request and free the completed dTDs - * for this request - */ -static int process_ep_req(struct langwell_udc *dev, int index, - struct langwell_request *curr_req) -{ - struct langwell_dtd *curr_dtd; - struct langwell_dqh *curr_dqh; - int td_complete, actual, remaining_length; - int i, dir; - u8 dtd_status = 0; - int retval = 0; - - curr_dqh = &dev->ep_dqh[index]; - dir = index % 2; - - curr_dtd = curr_req->head; - td_complete = 0; - actual = curr_req->req.length; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - for (i = 0; i < curr_req->dtd_count; i++) { - - /* command execution states by dTD */ - dtd_status = curr_dtd->dtd_status; - - barrier(); - remaining_length = le16_to_cpu(curr_dtd->dtd_total); - actual -= remaining_length; - - if (!dtd_status) { - /* transfers completed successfully */ - if (!remaining_length) { - td_complete++; - dev_vdbg(&dev->pdev->dev, - "dTD transmitted successfully\n"); - } else { - if (dir) { - dev_vdbg(&dev->pdev->dev, - "TX dTD remains data\n"); - retval = -EPROTO; - break; - - } else { - td_complete++; - break; - } - } - } else { - /* transfers completed with errors */ - if (dtd_status & DTD_STS_ACTIVE) { - dev_dbg(&dev->pdev->dev, - "dTD status ACTIVE dQH[%d]\n", index); - retval = 1; - return retval; - } else if (dtd_status & DTD_STS_HALTED) { - dev_err(&dev->pdev->dev, - "dTD error %08x dQH[%d]\n", - dtd_status, index); - /* clear the errors and halt condition */ - curr_dqh->dtd_status = 0; - retval = -EPIPE; - break; - } else if (dtd_status & DTD_STS_DBE) { - dev_dbg(&dev->pdev->dev, - "data buffer (overflow) error\n"); - retval = -EPROTO; - break; - } else if (dtd_status & DTD_STS_TRE) { - dev_dbg(&dev->pdev->dev, - "transaction(ISO) error\n"); - retval = -EILSEQ; - break; - } else - dev_err(&dev->pdev->dev, - "unknown error (0x%x)!\n", - dtd_status); - } - - if (i != curr_req->dtd_count - 1) - curr_dtd = (struct langwell_dtd *) - curr_dtd->next_dtd_virt; - } - - if (retval) - return retval; - - curr_req->req.actual = actual; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* complete DATA or STATUS phase of ep0 prime status phase if needed */ -static void ep0_req_complete(struct langwell_udc *dev, - struct langwell_ep *ep0, struct langwell_request *req) -{ - u32 new_addr; - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (dev->usb_state == USB_STATE_ADDRESS) { - /* set the new address */ - new_addr = (u32)dev->dev_addr; - writel(new_addr << USBADR_SHIFT, &dev->op_regs->deviceaddr); - - new_addr = USBADR(readl(&dev->op_regs->deviceaddr)); - dev_vdbg(&dev->pdev->dev, "new_addr = %d\n", new_addr); - } - - done(ep0, req, 0); - - switch (dev->ep0_state) { - case DATA_STATE_XMIT: - /* receive status phase */ - if (prime_status_phase(dev, EP_DIR_OUT)) - ep0_stall(dev); - break; - case DATA_STATE_RECV: - /* send status phase */ - if (prime_status_phase(dev, EP_DIR_IN)) - ep0_stall(dev); - break; - case WAIT_FOR_OUT_STATUS: - dev->ep0_state = WAIT_FOR_SETUP; - break; - case WAIT_FOR_SETUP: - dev_err(&dev->pdev->dev, "unexpect ep0 packets\n"); - break; - default: - ep0_stall(dev); - break; - } - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* USB transfer completion interrupt */ -static void handle_trans_complete(struct langwell_udc *dev) -{ - u32 complete_bits; - int i, ep_num, dir, bit_mask, status; - struct langwell_ep *epn; - struct langwell_request *curr_req, *temp_req; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - complete_bits = readl(&dev->op_regs->endptcomplete); - dev_vdbg(&dev->pdev->dev, "endptcomplete register: 0x%08x\n", - complete_bits); - - /* Write-Clear the bits in endptcomplete register */ - writel(complete_bits, &dev->op_regs->endptcomplete); - - if (!complete_bits) { - dev_dbg(&dev->pdev->dev, "complete_bits = 0\n"); - goto done; - } - - for (i = 0; i < dev->ep_max; i++) { - ep_num = i / 2; - dir = i % 2; - - bit_mask = 1 << (ep_num + 16 * dir); - - if (!(complete_bits & bit_mask)) - continue; - - /* ep0 */ - if (i == 1) - epn = &dev->ep[0]; - else - epn = &dev->ep[i]; - - if (epn->name == NULL) { - dev_warn(&dev->pdev->dev, "invalid endpoint\n"); - continue; - } - - if (i < 2) - /* ep0 in and out */ - dev_dbg(&dev->pdev->dev, "%s-%s transfer completed\n", - epn->name, - is_in(epn) ? "in" : "out"); - else - dev_dbg(&dev->pdev->dev, "%s transfer completed\n", - epn->name); - - /* process the req queue until an uncomplete request */ - list_for_each_entry_safe(curr_req, temp_req, - &epn->queue, queue) { - status = process_ep_req(dev, i, curr_req); - dev_vdbg(&dev->pdev->dev, "%s req status: %d\n", - epn->name, status); - - if (status) - break; - - /* write back status to req */ - curr_req->req.status = status; - - /* ep0 request completion */ - if (ep_num == 0) { - ep0_req_complete(dev, epn, curr_req); - break; - } else { - done(epn, curr_req, status); - } - } - } -done: - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - -/* port change detect interrupt handler */ -static void handle_port_change(struct langwell_udc *dev) -{ - u32 portsc1, devlc; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (dev->bus_reset) - dev->bus_reset = 0; - - portsc1 = readl(&dev->op_regs->portsc1); - devlc = readl(&dev->op_regs->devlc); - dev_vdbg(&dev->pdev->dev, "portsc1 = 0x%08x, devlc = 0x%08x\n", - portsc1, devlc); - - /* bus reset is finished */ - if (!(portsc1 & PORTS_PR)) { - /* get the speed */ - dev->gadget.speed = lpm_device_speed(devlc); - dev_vdbg(&dev->pdev->dev, "dev->gadget.speed = %d\n", - dev->gadget.speed); - } - - /* LPM L0 to L1 */ - if (dev->lpm && dev->lpm_state == LPM_L0) - if (portsc1 & PORTS_SUSP && portsc1 & PORTS_SLP) { - dev_info(&dev->pdev->dev, "LPM L0 to L1\n"); - dev->lpm_state = LPM_L1; - } - - /* LPM L1 to L0, force resume or remote wakeup finished */ - if (dev->lpm && dev->lpm_state == LPM_L1) - if (!(portsc1 & PORTS_SUSP)) { - dev_info(&dev->pdev->dev, "LPM L1 to L0\n"); - dev->lpm_state = LPM_L0; - } - - /* update USB state */ - if (!dev->resume_state) - dev->usb_state = USB_STATE_DEFAULT; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* USB reset interrupt handler */ -static void handle_usb_reset(struct langwell_udc *dev) -{ - u32 deviceaddr, - endptsetupstat, - endptcomplete; - unsigned long timeout; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* Write-Clear the device address */ - deviceaddr = readl(&dev->op_regs->deviceaddr); - writel(deviceaddr & ~USBADR_MASK, &dev->op_regs->deviceaddr); - - dev->dev_addr = 0; - - /* clear usb state */ - dev->resume_state = 0; - - /* LPM L1 to L0, reset */ - if (dev->lpm) - dev->lpm_state = LPM_L0; - - dev->ep0_dir = USB_DIR_OUT; - dev->ep0_state = WAIT_FOR_SETUP; - - /* remote wakeup reset to 0 when the device is reset */ - dev->remote_wakeup = 0; - dev->dev_status = 1 << USB_DEVICE_SELF_POWERED; - dev->gadget.b_hnp_enable = 0; - dev->gadget.a_hnp_support = 0; - dev->gadget.a_alt_hnp_support = 0; - - /* Write-Clear all the setup token semaphores */ - endptsetupstat = readl(&dev->op_regs->endptsetupstat); - writel(endptsetupstat, &dev->op_regs->endptsetupstat); - - /* Write-Clear all the endpoint complete status bits */ - endptcomplete = readl(&dev->op_regs->endptcomplete); - writel(endptcomplete, &dev->op_regs->endptcomplete); - - /* wait until all endptprime bits cleared */ - timeout = jiffies + PRIME_TIMEOUT; - while (readl(&dev->op_regs->endptprime)) { - if (time_after(jiffies, timeout)) { - dev_err(&dev->pdev->dev, "USB reset timeout\n"); - break; - } - cpu_relax(); - } - - /* write 1s to endptflush register to clear any primed buffers */ - writel((u32) ~0, &dev->op_regs->endptflush); - - if (readl(&dev->op_regs->portsc1) & PORTS_PR) { - dev_vdbg(&dev->pdev->dev, "USB bus reset\n"); - /* bus is reseting */ - dev->bus_reset = 1; - - /* reset all the queues, stop all USB activities */ - stop_activity(dev); - dev->usb_state = USB_STATE_DEFAULT; - } else { - dev_vdbg(&dev->pdev->dev, "device controller reset\n"); - /* controller reset */ - langwell_udc_reset(dev); - - /* reset all the queues, stop all USB activities */ - stop_activity(dev); - - /* reset ep0 dQH and endptctrl */ - ep0_reset(dev); - - /* enable interrupt and set controller to run state */ - langwell_udc_start(dev); - - dev->usb_state = USB_STATE_ATTACHED; - } - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* USB bus suspend/resume interrupt */ -static void handle_bus_suspend(struct langwell_udc *dev) -{ - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - dev->resume_state = dev->usb_state; - dev->usb_state = USB_STATE_SUSPENDED; - - /* report suspend to the driver */ - if (dev->driver) { - if (dev->driver->suspend) { - spin_unlock(&dev->lock); - dev->driver->suspend(&dev->gadget); - spin_lock(&dev->lock); - dev_dbg(&dev->pdev->dev, "suspend %s\n", - dev->driver->driver.name); - } - } - - /* enter PHY low power suspend */ - if (dev->pdev->device != 0x0829) - langwell_phy_low_power(dev, 0); - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -static void handle_bus_resume(struct langwell_udc *dev) -{ - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - dev->usb_state = dev->resume_state; - dev->resume_state = 0; - - /* exit PHY low power suspend */ - if (dev->pdev->device != 0x0829) - langwell_phy_low_power(dev, 0); - - /* report resume to the driver */ - if (dev->driver) { - if (dev->driver->resume) { - spin_unlock(&dev->lock); - dev->driver->resume(&dev->gadget); - spin_lock(&dev->lock); - dev_dbg(&dev->pdev->dev, "resume %s\n", - dev->driver->driver.name); - } - } - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* USB device controller interrupt handler */ -static irqreturn_t langwell_irq(int irq, void *_dev) -{ - struct langwell_udc *dev = _dev; - u32 usbsts, - usbintr, - irq_sts, - portsc1; - - dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__); - - if (dev->stopped) { - dev_vdbg(&dev->pdev->dev, "handle IRQ_NONE\n"); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return IRQ_NONE; - } - - spin_lock(&dev->lock); - - /* USB status */ - usbsts = readl(&dev->op_regs->usbsts); - - /* USB interrupt enable */ - usbintr = readl(&dev->op_regs->usbintr); - - irq_sts = usbsts & usbintr; - dev_vdbg(&dev->pdev->dev, - "usbsts = 0x%08x, usbintr = 0x%08x, irq_sts = 0x%08x\n", - usbsts, usbintr, irq_sts); - - if (!irq_sts) { - dev_vdbg(&dev->pdev->dev, "handle IRQ_NONE\n"); - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - spin_unlock(&dev->lock); - return IRQ_NONE; - } - - /* Write-Clear interrupt status bits */ - writel(irq_sts, &dev->op_regs->usbsts); - - /* resume from suspend */ - portsc1 = readl(&dev->op_regs->portsc1); - if (dev->usb_state == USB_STATE_SUSPENDED) - if (!(portsc1 & PORTS_SUSP)) - handle_bus_resume(dev); - - /* USB interrupt */ - if (irq_sts & STS_UI) { - dev_vdbg(&dev->pdev->dev, "USB interrupt\n"); - - /* setup packet received from ep0 */ - if (readl(&dev->op_regs->endptsetupstat) - & EP0SETUPSTAT_MASK) { - dev_vdbg(&dev->pdev->dev, - "USB SETUP packet received interrupt\n"); - /* setup tripwire semaphone */ - setup_tripwire(dev); - handle_setup_packet(dev, &dev->local_setup_buff); - } - - /* USB transfer completion */ - if (readl(&dev->op_regs->endptcomplete)) { - dev_vdbg(&dev->pdev->dev, - "USB transfer completion interrupt\n"); - handle_trans_complete(dev); - } - } - - /* SOF received interrupt (for ISO transfer) */ - if (irq_sts & STS_SRI) { - /* FIXME */ - /* dev_vdbg(&dev->pdev->dev, "SOF received interrupt\n"); */ - } - - /* port change detect interrupt */ - if (irq_sts & STS_PCI) { - dev_vdbg(&dev->pdev->dev, "port change detect interrupt\n"); - handle_port_change(dev); - } - - /* suspend interrupt */ - if (irq_sts & STS_SLI) { - dev_vdbg(&dev->pdev->dev, "suspend interrupt\n"); - handle_bus_suspend(dev); - } - - /* USB reset interrupt */ - if (irq_sts & STS_URI) { - dev_vdbg(&dev->pdev->dev, "USB reset interrupt\n"); - handle_usb_reset(dev); - } - - /* USB error or system error interrupt */ - if (irq_sts & (STS_UEI | STS_SEI)) { - /* FIXME */ - dev_warn(&dev->pdev->dev, "error IRQ, irq_sts: %x\n", irq_sts); - } - - spin_unlock(&dev->lock); - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return IRQ_HANDLED; -} - - -/*-------------------------------------------------------------------------*/ - -/* release device structure */ -static void gadget_release(struct device *_dev) -{ - struct langwell_udc *dev = dev_get_drvdata(_dev); - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - complete(dev->done); - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - kfree(dev); -} - - -/* enable SRAM caching if SRAM detected */ -static void sram_init(struct langwell_udc *dev) -{ - struct pci_dev *pdev = dev->pdev; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - dev->sram_addr = pci_resource_start(pdev, 1); - dev->sram_size = pci_resource_len(pdev, 1); - dev_info(&dev->pdev->dev, "Found private SRAM at %x size:%x\n", - dev->sram_addr, dev->sram_size); - dev->got_sram = 1; - - if (pci_request_region(pdev, 1, kobject_name(&pdev->dev.kobj))) { - dev_warn(&dev->pdev->dev, "SRAM request failed\n"); - dev->got_sram = 0; - } else if (!dma_declare_coherent_memory(&pdev->dev, dev->sram_addr, - dev->sram_addr, dev->sram_size, DMA_MEMORY_MAP)) { - dev_warn(&dev->pdev->dev, "SRAM DMA declare failed\n"); - pci_release_region(pdev, 1); - dev->got_sram = 0; - } - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* release SRAM caching */ -static void sram_deinit(struct langwell_udc *dev) -{ - struct pci_dev *pdev = dev->pdev; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - dma_release_declared_memory(&pdev->dev); - pci_release_region(pdev, 1); - - dev->got_sram = 0; - - dev_info(&dev->pdev->dev, "release SRAM caching\n"); - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - - -/* tear down the binding between this driver and the pci device */ -static void langwell_udc_remove(struct pci_dev *pdev) -{ - struct langwell_udc *dev = pci_get_drvdata(pdev); - - DECLARE_COMPLETION(done); - - BUG_ON(dev->driver); - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - dev->done = &done; - - /* free dTD dma_pool and dQH */ - if (dev->dtd_pool) - dma_pool_destroy(dev->dtd_pool); - - if (dev->ep_dqh) - dma_free_coherent(&pdev->dev, dev->ep_dqh_size, - dev->ep_dqh, dev->ep_dqh_dma); - - /* release SRAM caching */ - if (dev->has_sram && dev->got_sram) - sram_deinit(dev); - - if (dev->status_req) { - kfree(dev->status_req->req.buf); - kfree(dev->status_req); - } - - kfree(dev->ep); - - /* disable IRQ handler */ - if (dev->got_irq) - free_irq(pdev->irq, dev); - - if (dev->cap_regs) - iounmap(dev->cap_regs); - - if (dev->region) - release_mem_region(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); - - if (dev->enabled) - pci_disable_device(pdev); - - dev->cap_regs = NULL; - - dev_info(&dev->pdev->dev, "unbind\n"); - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - - device_unregister(&dev->gadget.dev); - device_remove_file(&pdev->dev, &dev_attr_langwell_udc); - device_remove_file(&pdev->dev, &dev_attr_remote_wakeup); - - pci_set_drvdata(pdev, NULL); - - /* free dev, wait for the release() finished */ - wait_for_completion(&done); -} - - -/* - * wrap this driver around the specified device, but - * don't respond over USB until a gadget driver binds to us. - */ -static int langwell_udc_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - struct langwell_udc *dev; - unsigned long resource, len; - void __iomem *base = NULL; - size_t size; - int retval; - - /* alloc, and start init */ - dev = kzalloc(sizeof *dev, GFP_KERNEL); - if (dev == NULL) { - retval = -ENOMEM; - goto error; - } - - /* initialize device spinlock */ - spin_lock_init(&dev->lock); - - dev->pdev = pdev; - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - pci_set_drvdata(pdev, dev); - - /* now all the pci goodies ... */ - if (pci_enable_device(pdev) < 0) { - retval = -ENODEV; - goto error; - } - dev->enabled = 1; - - /* control register: BAR 0 */ - resource = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - if (!request_mem_region(resource, len, driver_name)) { - dev_err(&dev->pdev->dev, "controller already in use\n"); - retval = -EBUSY; - goto error; - } - dev->region = 1; - - base = ioremap_nocache(resource, len); - if (base == NULL) { - dev_err(&dev->pdev->dev, "can't map memory\n"); - retval = -EFAULT; - goto error; - } - - dev->cap_regs = (struct langwell_cap_regs __iomem *) base; - dev_vdbg(&dev->pdev->dev, "dev->cap_regs: %p\n", dev->cap_regs); - dev->op_regs = (struct langwell_op_regs __iomem *) - (base + OP_REG_OFFSET); - dev_vdbg(&dev->pdev->dev, "dev->op_regs: %p\n", dev->op_regs); - - /* irq setup after old hardware is cleaned up */ - if (!pdev->irq) { - dev_err(&dev->pdev->dev, "No IRQ. Check PCI setup!\n"); - retval = -ENODEV; - goto error; - } - - dev->has_sram = 1; - dev->got_sram = 0; - dev_vdbg(&dev->pdev->dev, "dev->has_sram: %d\n", dev->has_sram); - - /* enable SRAM caching if detected */ - if (dev->has_sram && !dev->got_sram) - sram_init(dev); - - dev_info(&dev->pdev->dev, - "irq %d, io mem: 0x%08lx, len: 0x%08lx, pci mem 0x%p\n", - pdev->irq, resource, len, base); - /* enables bus-mastering for device dev */ - pci_set_master(pdev); - - if (request_irq(pdev->irq, langwell_irq, IRQF_SHARED, - driver_name, dev) != 0) { - dev_err(&dev->pdev->dev, - "request interrupt %d failed\n", pdev->irq); - retval = -EBUSY; - goto error; - } - dev->got_irq = 1; - - /* set stopped bit */ - dev->stopped = 1; - - /* capabilities and endpoint number */ - dev->lpm = (readl(&dev->cap_regs->hccparams) & HCC_LEN) ? 1 : 0; - dev->dciversion = readw(&dev->cap_regs->dciversion); - dev->devcap = (readl(&dev->cap_regs->dccparams) & DEVCAP) ? 1 : 0; - dev_vdbg(&dev->pdev->dev, "dev->lpm: %d\n", dev->lpm); - dev_vdbg(&dev->pdev->dev, "dev->dciversion: 0x%04x\n", - dev->dciversion); - dev_vdbg(&dev->pdev->dev, "dccparams: 0x%08x\n", - readl(&dev->cap_regs->dccparams)); - dev_vdbg(&dev->pdev->dev, "dev->devcap: %d\n", dev->devcap); - if (!dev->devcap) { - dev_err(&dev->pdev->dev, "can't support device mode\n"); - retval = -ENODEV; - goto error; - } - - /* a pair of endpoints (out/in) for each address */ - dev->ep_max = DEN(readl(&dev->cap_regs->dccparams)) * 2; - dev_vdbg(&dev->pdev->dev, "dev->ep_max: %d\n", dev->ep_max); - - /* allocate endpoints memory */ - dev->ep = kzalloc(sizeof(struct langwell_ep) * dev->ep_max, - GFP_KERNEL); - if (!dev->ep) { - dev_err(&dev->pdev->dev, "allocate endpoints memory failed\n"); - retval = -ENOMEM; - goto error; - } - - /* allocate device dQH memory */ - size = dev->ep_max * sizeof(struct langwell_dqh); - dev_vdbg(&dev->pdev->dev, "orig size = %zd\n", size); - if (size < DQH_ALIGNMENT) - size = DQH_ALIGNMENT; - else if ((size % DQH_ALIGNMENT) != 0) { - size += DQH_ALIGNMENT + 1; - size &= ~(DQH_ALIGNMENT - 1); - } - dev->ep_dqh = dma_alloc_coherent(&pdev->dev, size, - &dev->ep_dqh_dma, GFP_KERNEL); - if (!dev->ep_dqh) { - dev_err(&dev->pdev->dev, "allocate dQH memory failed\n"); - retval = -ENOMEM; - goto error; - } - dev->ep_dqh_size = size; - dev_vdbg(&dev->pdev->dev, "ep_dqh_size = %zd\n", dev->ep_dqh_size); - - /* initialize ep0 status request structure */ - dev->status_req = kzalloc(sizeof(struct langwell_request), GFP_KERNEL); - if (!dev->status_req) { - dev_err(&dev->pdev->dev, - "allocate status_req memory failed\n"); - retval = -ENOMEM; - goto error; - } - INIT_LIST_HEAD(&dev->status_req->queue); - - /* allocate a small amount of memory to get valid address */ - dev->status_req->req.buf = kmalloc(8, GFP_KERNEL); - dev->status_req->req.dma = virt_to_phys(dev->status_req->req.buf); - - dev->resume_state = USB_STATE_NOTATTACHED; - dev->usb_state = USB_STATE_POWERED; - dev->ep0_dir = USB_DIR_OUT; - - /* remote wakeup reset to 0 when the device is reset */ - dev->remote_wakeup = 0; - dev->dev_status = 1 << USB_DEVICE_SELF_POWERED; - - /* reset device controller */ - langwell_udc_reset(dev); - - /* initialize gadget structure */ - dev->gadget.ops = &langwell_ops; /* usb_gadget_ops */ - dev->gadget.ep0 = &dev->ep[0].ep; /* gadget ep0 */ - INIT_LIST_HEAD(&dev->gadget.ep_list); /* ep_list */ - dev->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ - dev->gadget.max_speed = USB_SPEED_HIGH; /* support dual speed */ - - /* the "gadget" abstracts/virtualizes the controller */ - dev_set_name(&dev->gadget.dev, "gadget"); - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; - dev->gadget.dev.release = gadget_release; - dev->gadget.name = driver_name; /* gadget name */ - - /* controller endpoints reinit */ - eps_reinit(dev); - - /* reset ep0 dQH and endptctrl */ - ep0_reset(dev); - - /* create dTD dma_pool resource */ - dev->dtd_pool = dma_pool_create("langwell_dtd", - &dev->pdev->dev, - sizeof(struct langwell_dtd), - DTD_ALIGNMENT, - DMA_BOUNDARY); - - if (!dev->dtd_pool) { - retval = -ENOMEM; - goto error; - } - - /* done */ - dev_info(&dev->pdev->dev, "%s\n", driver_desc); - dev_info(&dev->pdev->dev, "irq %d, pci mem %p\n", pdev->irq, base); - dev_info(&dev->pdev->dev, "Driver version: " DRIVER_VERSION "\n"); - dev_info(&dev->pdev->dev, "Support (max) %d endpoints\n", dev->ep_max); - dev_info(&dev->pdev->dev, "Device interface version: 0x%04x\n", - dev->dciversion); - dev_info(&dev->pdev->dev, "Controller mode: %s\n", - dev->devcap ? "Device" : "Host"); - dev_info(&dev->pdev->dev, "Support USB LPM: %s\n", - dev->lpm ? "Yes" : "No"); - - dev_vdbg(&dev->pdev->dev, - "After langwell_udc_probe(), print all registers:\n"); - print_all_registers(dev); - - retval = device_register(&dev->gadget.dev); - if (retval) - goto error; - - retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget); - if (retval) - goto error; - - retval = device_create_file(&pdev->dev, &dev_attr_langwell_udc); - if (retval) - goto error; - - retval = device_create_file(&pdev->dev, &dev_attr_remote_wakeup); - if (retval) - goto error_attr1; - - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; - -error_attr1: - device_remove_file(&pdev->dev, &dev_attr_langwell_udc); -error: - if (dev) { - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - langwell_udc_remove(pdev); - } - - return retval; -} - - -/* device controller suspend */ -static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct langwell_udc *dev = pci_get_drvdata(pdev); - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - usb_del_gadget_udc(&dev->gadget); - /* disable interrupt and set controller to stop state */ - langwell_udc_stop(dev); - - /* disable IRQ handler */ - if (dev->got_irq) - free_irq(pdev->irq, dev); - dev->got_irq = 0; - - /* save PCI state */ - pci_save_state(pdev); - - spin_lock_irq(&dev->lock); - /* stop all usb activities */ - stop_activity(dev); - spin_unlock_irq(&dev->lock); - - /* free dTD dma_pool and dQH */ - if (dev->dtd_pool) - dma_pool_destroy(dev->dtd_pool); - - if (dev->ep_dqh) - dma_free_coherent(&pdev->dev, dev->ep_dqh_size, - dev->ep_dqh, dev->ep_dqh_dma); - - /* release SRAM caching */ - if (dev->has_sram && dev->got_sram) - sram_deinit(dev); - - /* set device power state */ - pci_set_power_state(pdev, PCI_D3hot); - - /* enter PHY low power suspend */ - if (dev->pdev->device != 0x0829) - langwell_phy_low_power(dev, 1); - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* device controller resume */ -static int langwell_udc_resume(struct pci_dev *pdev) -{ - struct langwell_udc *dev = pci_get_drvdata(pdev); - size_t size; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* exit PHY low power suspend */ - if (dev->pdev->device != 0x0829) - langwell_phy_low_power(dev, 0); - - /* set device D0 power state */ - pci_set_power_state(pdev, PCI_D0); - - /* enable SRAM caching if detected */ - if (dev->has_sram && !dev->got_sram) - sram_init(dev); - - /* allocate device dQH memory */ - size = dev->ep_max * sizeof(struct langwell_dqh); - dev_vdbg(&dev->pdev->dev, "orig size = %zd\n", size); - if (size < DQH_ALIGNMENT) - size = DQH_ALIGNMENT; - else if ((size % DQH_ALIGNMENT) != 0) { - size += DQH_ALIGNMENT + 1; - size &= ~(DQH_ALIGNMENT - 1); - } - dev->ep_dqh = dma_alloc_coherent(&pdev->dev, size, - &dev->ep_dqh_dma, GFP_KERNEL); - if (!dev->ep_dqh) { - dev_err(&dev->pdev->dev, "allocate dQH memory failed\n"); - return -ENOMEM; - } - dev->ep_dqh_size = size; - dev_vdbg(&dev->pdev->dev, "ep_dqh_size = %zd\n", dev->ep_dqh_size); - - /* create dTD dma_pool resource */ - dev->dtd_pool = dma_pool_create("langwell_dtd", - &dev->pdev->dev, - sizeof(struct langwell_dtd), - DTD_ALIGNMENT, - DMA_BOUNDARY); - - if (!dev->dtd_pool) - return -ENOMEM; - - /* restore PCI state */ - pci_restore_state(pdev); - - /* enable IRQ handler */ - if (request_irq(pdev->irq, langwell_irq, IRQF_SHARED, - driver_name, dev) != 0) { - dev_err(&dev->pdev->dev, "request interrupt %d failed\n", - pdev->irq); - return -EBUSY; - } - dev->got_irq = 1; - - /* reset and start controller to run state */ - if (dev->stopped) { - /* reset device controller */ - langwell_udc_reset(dev); - - /* reset ep0 dQH and endptctrl */ - ep0_reset(dev); - - /* start device if gadget is loaded */ - if (dev->driver) - langwell_udc_start(dev); - } - - /* reset USB status */ - dev->usb_state = USB_STATE_ATTACHED; - dev->ep0_state = WAIT_FOR_SETUP; - dev->ep0_dir = USB_DIR_OUT; - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); - return 0; -} - - -/* pci driver shutdown */ -static void langwell_udc_shutdown(struct pci_dev *pdev) -{ - struct langwell_udc *dev = pci_get_drvdata(pdev); - u32 usbmode; - - dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); - - /* reset controller mode to IDLE */ - usbmode = readl(&dev->op_regs->usbmode); - dev_dbg(&dev->pdev->dev, "usbmode = 0x%08x\n", usbmode); - usbmode &= (~3 | MODE_IDLE); - writel(usbmode, &dev->op_regs->usbmode); - - dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__); -} - -/*-------------------------------------------------------------------------*/ - -static const struct pci_device_id pci_ids[] = { { - .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), - .class_mask = ~0, - .vendor = 0x8086, - .device = 0x0811, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, -}, { /* end: all zeroes */ } -}; - -MODULE_DEVICE_TABLE(pci, pci_ids); - - -static struct pci_driver langwell_pci_driver = { - .name = (char *) driver_name, - .id_table = pci_ids, - - .probe = langwell_udc_probe, - .remove = langwell_udc_remove, - - /* device controller suspend/resume */ - .suspend = langwell_udc_suspend, - .resume = langwell_udc_resume, - - .shutdown = langwell_udc_shutdown, -}; - - -static int __init init(void) -{ - return pci_register_driver(&langwell_pci_driver); -} -module_init(init); - - -static void __exit cleanup(void) -{ - pci_unregister_driver(&langwell_pci_driver); -} -module_exit(cleanup); - - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Xiaochen Shen <xiaochen.shen@intel.com>"); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL"); - diff --git a/drivers/usb/gadget/langwell_udc.h b/drivers/usb/gadget/langwell_udc.h deleted file mode 100644 index d6e78accaff..00000000000 --- a/drivers/usb/gadget/langwell_udc.h +++ /dev/null @@ -1,224 +0,0 @@ -/* - * Intel Langwell USB Device Controller driver - * Copyright (C) 2008-2009, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - */ - -#include <linux/usb/langwell_udc.h> - -/*-------------------------------------------------------------------------*/ - -/* driver data structures and utilities */ - -/* - * dTD: Device Endpoint Transfer Descriptor - * describe to the device controller the location and quantity of - * data to be send/received for given transfer - */ -struct langwell_dtd { - u32 dtd_next; -/* bits 31:5, next transfer element pointer */ -#define DTD_NEXT(d) (((d)>>5)&0x7ffffff) -#define DTD_NEXT_MASK (0x7ffffff << 5) -/* terminate */ -#define DTD_TERM BIT(0) - /* bits 7:0, execution back states */ - u32 dtd_status:8; -#define DTD_STATUS(d) (((d)>>0)&0xff) -#define DTD_STS_ACTIVE BIT(7) /* active */ -#define DTD_STS_HALTED BIT(6) /* halted */ -#define DTD_STS_DBE BIT(5) /* data buffer error */ -#define DTD_STS_TRE BIT(3) /* transaction error */ - /* bits 9:8 */ - u32 dtd_res0:2; - /* bits 11:10, multipier override */ - u32 dtd_multo:2; -#define DTD_MULTO (BIT(11) | BIT(10)) - /* bits 14:12 */ - u32 dtd_res1:3; - /* bit 15, interrupt on complete */ - u32 dtd_ioc:1; -#define DTD_IOC BIT(15) - /* bits 30:16, total bytes */ - u32 dtd_total:15; -#define DTD_TOTAL(d) (((d)>>16)&0x7fff) -#define DTD_MAX_TRANSFER_LENGTH 0x4000 - /* bit 31 */ - u32 dtd_res2:1; - /* dTD buffer pointer page 0 to 4 */ - u32 dtd_buf[5]; -#define DTD_OFFSET_MASK 0xfff -/* bits 31:12, buffer pointer */ -#define DTD_BUFFER(d) (((d)>>12)&0x3ff) -/* bits 11:0, current offset */ -#define DTD_C_OFFSET(d) (((d)>>0)&0xfff) -/* bits 10:0, frame number */ -#define DTD_FRAME(d) (((d)>>0)&0x7ff) - - /* driver-private parts */ - - /* dtd dma address */ - dma_addr_t dtd_dma; - /* next dtd virtual address */ - struct langwell_dtd *next_dtd_virt; -}; - - -/* - * dQH: Device Endpoint Queue Head - * describe where all transfers are managed - * 48-byte data structure, aligned on 64-byte boundary - * - * These are associated with dTD structure - */ -struct langwell_dqh { - /* endpoint capabilities and characteristics */ - u32 dqh_res0:15; /* bits 14:0 */ - u32 dqh_ios:1; /* bit 15, interrupt on setup */ -#define DQH_IOS BIT(15) - u32 dqh_mpl:11; /* bits 26:16, maximum packet length */ -#define DQH_MPL (0x7ff << 16) - u32 dqh_res1:2; /* bits 28:27 */ - u32 dqh_zlt:1; /* bit 29, zero length termination */ -#define DQH_ZLT BIT(29) - u32 dqh_mult:2; /* bits 31:30 */ -#define DQH_MULT (BIT(30) | BIT(31)) - - /* current dTD pointer */ - u32 dqh_current; /* locate the transfer in progress */ -#define DQH_C_DTD(e) \ - (((e)>>5)&0x7ffffff) /* bits 31:5, current dTD pointer */ - - /* transfer overlay, hardware parts of a struct langwell_dtd */ - u32 dtd_next; - u32 dtd_status:8; /* bits 7:0, execution back states */ - u32 dtd_res0:2; /* bits 9:8 */ - u32 dtd_multo:2; /* bits 11:10, multipier override */ - u32 dtd_res1:3; /* bits 14:12 */ - u32 dtd_ioc:1; /* bit 15, interrupt on complete */ - u32 dtd_total:15; /* bits 30:16, total bytes */ - u32 dtd_res2:1; /* bit 31 */ - u32 dtd_buf[5]; /* dTD buffer pointer page 0 to 4 */ - - u32 dqh_res2; - struct usb_ctrlrequest dqh_setup; /* setup packet buffer */ -} __attribute__ ((aligned(64))); - - -/* endpoint data structure */ -struct langwell_ep { - struct usb_ep ep; - dma_addr_t dma; - struct langwell_udc *dev; - unsigned long irqs; - struct list_head queue; - struct langwell_dqh *dqh; - const struct usb_endpoint_descriptor *desc; - char name[14]; - unsigned stopped:1, - ep_type:2, - ep_num:8; -}; - - -/* request data structure */ -struct langwell_request { - struct usb_request req; - struct langwell_dtd *dtd, *head, *tail; - struct langwell_ep *ep; - dma_addr_t dtd_dma; - struct list_head queue; - unsigned dtd_count; - unsigned mapped:1; -}; - - -/* ep0 transfer state */ -enum ep0_state { - WAIT_FOR_SETUP, - DATA_STATE_XMIT, - DATA_STATE_NEED_ZLP, - WAIT_FOR_OUT_STATUS, - DATA_STATE_RECV, -}; - - -/* device suspend state */ -enum lpm_state { - LPM_L0, /* on */ - LPM_L1, /* LPM L1 sleep */ - LPM_L2, /* suspend */ - LPM_L3, /* off */ -}; - - -/* device data structure */ -struct langwell_udc { - /* each pci device provides one gadget, several endpoints */ - struct usb_gadget gadget; - spinlock_t lock; /* device lock */ - struct langwell_ep *ep; - struct usb_gadget_driver *driver; - struct otg_transceiver *transceiver; - u8 dev_addr; - u32 usb_state; - u32 resume_state; - u32 bus_reset; - enum lpm_state lpm_state; - enum ep0_state ep0_state; - u32 ep0_dir; - u16 dciversion; - unsigned ep_max; - unsigned devcap:1, - enabled:1, - region:1, - got_irq:1, - powered:1, - remote_wakeup:1, - rate:1, - is_reset:1, - softconnected:1, - vbus_active:1, - suspended:1, - stopped:1, - lpm:1, /* LPM capability */ - has_sram:1, /* SRAM caching */ - got_sram:1; - - /* pci state used to access those endpoints */ - struct pci_dev *pdev; - - /* Langwell otg transceiver */ - struct langwell_otg *lotg; - - /* control registers */ - struct langwell_cap_regs __iomem *cap_regs; - struct langwell_op_regs __iomem *op_regs; - - struct usb_ctrlrequest local_setup_buff; - struct langwell_dqh *ep_dqh; - size_t ep_dqh_size; - dma_addr_t ep_dqh_dma; - - /* ep0 status request */ - struct langwell_request *status_req; - - /* dma pool */ - struct dma_pool *dtd_pool; - - /* make sure release() is done */ - struct completion *done; - - /* for private SRAM caching */ - unsigned int sram_addr; - unsigned int sram_size; - - /* device status data for get_status request */ - u16 dev_status; -}; - -#define gadget_to_langwell(g) container_of((g), struct langwell_udc, gadget) - diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c new file mode 100644 index 00000000000..e471580a2a3 --- /dev/null +++ b/drivers/usb/gadget/lpc32xx_udc.c @@ -0,0 +1,3425 @@ +/* + * USB Gadget driver for LPC32xx + * + * Authors: + * Kevin Wells <kevin.wells@nxp.com> + * Mike James + * Roland Stigge <stigge@antcom.de> + * + * Copyright (C) 2006 Philips Semiconductors + * Copyright (C) 2009 NXP Semiconductors + * Copyright (C) 2012 Roland Stigge + * + * Note: This driver is based on original work done by Mike James for + * the LPC3180. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/proc_fs.h> +#include <linux/clk.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/i2c.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/workqueue.h> +#include <linux/of.h> +#include <linux/usb/isp1301.h> + +#include <asm/byteorder.h> +#include <mach/hardware.h> +#include <linux/io.h> +#include <asm/irq.h> + +#include <mach/platform.h> +#include <mach/irqs.h> +#include <mach/board.h> +#ifdef CONFIG_USB_GADGET_DEBUG_FILES +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#endif + +/* + * USB device configuration structure + */ +typedef void (*usc_chg_event)(int); +struct lpc32xx_usbd_cfg { + int vbus_drv_pol; /* 0=active low drive for VBUS via ISP1301 */ + usc_chg_event conn_chgb; /* Connection change event (optional) */ + usc_chg_event susp_chgb; /* Suspend/resume event (optional) */ + usc_chg_event rmwk_chgb; /* Enable/disable remote wakeup */ +}; + +/* + * controller driver data structures + */ + +/* 16 endpoints (not to be confused with 32 hardware endpoints) */ +#define NUM_ENDPOINTS 16 + +/* + * IRQ indices make reading the code a little easier + */ +#define IRQ_USB_LP 0 +#define IRQ_USB_HP 1 +#define IRQ_USB_DEVDMA 2 +#define IRQ_USB_ATX 3 + +#define EP_OUT 0 /* RX (from host) */ +#define EP_IN 1 /* TX (to host) */ + +/* Returns the interrupt mask for the selected hardware endpoint */ +#define EP_MASK_SEL(ep, dir) (1 << (((ep) * 2) + dir)) + +#define EP_INT_TYPE 0 +#define EP_ISO_TYPE 1 +#define EP_BLK_TYPE 2 +#define EP_CTL_TYPE 3 + +/* EP0 states */ +#define WAIT_FOR_SETUP 0 /* Wait for setup packet */ +#define DATA_IN 1 /* Expect dev->host transfer */ +#define DATA_OUT 2 /* Expect host->dev transfer */ + +/* DD (DMA Descriptor) structure, requires word alignment, this is already + * defined in the LPC32XX USB device header file, but this version is slightly + * modified to tag some work data with each DMA descriptor. */ +struct lpc32xx_usbd_dd_gad { + u32 dd_next_phy; + u32 dd_setup; + u32 dd_buffer_addr; + u32 dd_status; + u32 dd_iso_ps_mem_addr; + u32 this_dma; + u32 iso_status[6]; /* 5 spare */ + u32 dd_next_v; +}; + +/* + * Logical endpoint structure + */ +struct lpc32xx_ep { + struct usb_ep ep; + struct list_head queue; + struct lpc32xx_udc *udc; + + u32 hwep_num_base; /* Physical hardware EP */ + u32 hwep_num; /* Maps to hardware endpoint */ + u32 maxpacket; + u32 lep; + + bool is_in; + bool req_pending; + u32 eptype; + + u32 totalints; + + bool wedge; +}; + +/* + * Common UDC structure + */ +struct lpc32xx_udc { + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + struct platform_device *pdev; + struct device *dev; + struct dentry *pde; + spinlock_t lock; + struct i2c_client *isp1301_i2c_client; + + /* Board and device specific */ + struct lpc32xx_usbd_cfg *board; + u32 io_p_start; + u32 io_p_size; + void __iomem *udp_baseaddr; + int udp_irq[4]; + struct clk *usb_pll_clk; + struct clk *usb_slv_clk; + struct clk *usb_otg_clk; + + /* DMA support */ + u32 *udca_v_base; + u32 udca_p_base; + struct dma_pool *dd_cache; + + /* Common EP and control data */ + u32 enabled_devints; + u32 enabled_hwepints; + u32 dev_status; + u32 realized_eps; + + /* VBUS detection, pullup, and power flags */ + u8 vbus; + u8 last_vbus; + int pullup; + int poweron; + + /* Work queues related to I2C support */ + struct work_struct pullup_job; + struct work_struct vbus_job; + struct work_struct power_job; + + /* USB device peripheral - various */ + struct lpc32xx_ep ep[NUM_ENDPOINTS]; + bool enabled; + bool clocked; + bool suspended; + bool selfpowered; + int ep0state; + atomic_t enabled_ep_cnt; + wait_queue_head_t ep_disable_wait_queue; +}; + +/* + * Endpoint request + */ +struct lpc32xx_request { + struct usb_request req; + struct list_head queue; + struct lpc32xx_usbd_dd_gad *dd_desc_ptr; + bool mapped; + bool send_zlp; +}; + +static inline struct lpc32xx_udc *to_udc(struct usb_gadget *g) +{ + return container_of(g, struct lpc32xx_udc, gadget); +} + +#define ep_dbg(epp, fmt, arg...) \ + dev_dbg(epp->udc->dev, "%s: " fmt, __func__, ## arg) +#define ep_err(epp, fmt, arg...) \ + dev_err(epp->udc->dev, "%s: " fmt, __func__, ## arg) +#define ep_info(epp, fmt, arg...) \ + dev_info(epp->udc->dev, "%s: " fmt, __func__, ## arg) +#define ep_warn(epp, fmt, arg...) \ + dev_warn(epp->udc->dev, "%s:" fmt, __func__, ## arg) + +#define UDCA_BUFF_SIZE (128) + +/* TODO: When the clock framework is introduced in LPC32xx, IO_ADDRESS will + * be replaced with an inremap()ed pointer + * */ +#define USB_CTRL IO_ADDRESS(LPC32XX_CLK_PM_BASE + 0x64) + +/* USB_CTRL bit defines */ +#define USB_SLAVE_HCLK_EN (1 << 24) +#define USB_HOST_NEED_CLK_EN (1 << 21) +#define USB_DEV_NEED_CLK_EN (1 << 22) + +/********************************************************************** + * USB device controller register offsets + **********************************************************************/ + +#define USBD_DEVINTST(x) ((x) + 0x200) +#define USBD_DEVINTEN(x) ((x) + 0x204) +#define USBD_DEVINTCLR(x) ((x) + 0x208) +#define USBD_DEVINTSET(x) ((x) + 0x20C) +#define USBD_CMDCODE(x) ((x) + 0x210) +#define USBD_CMDDATA(x) ((x) + 0x214) +#define USBD_RXDATA(x) ((x) + 0x218) +#define USBD_TXDATA(x) ((x) + 0x21C) +#define USBD_RXPLEN(x) ((x) + 0x220) +#define USBD_TXPLEN(x) ((x) + 0x224) +#define USBD_CTRL(x) ((x) + 0x228) +#define USBD_DEVINTPRI(x) ((x) + 0x22C) +#define USBD_EPINTST(x) ((x) + 0x230) +#define USBD_EPINTEN(x) ((x) + 0x234) +#define USBD_EPINTCLR(x) ((x) + 0x238) +#define USBD_EPINTSET(x) ((x) + 0x23C) +#define USBD_EPINTPRI(x) ((x) + 0x240) +#define USBD_REEP(x) ((x) + 0x244) +#define USBD_EPIND(x) ((x) + 0x248) +#define USBD_EPMAXPSIZE(x) ((x) + 0x24C) +/* DMA support registers only below */ +/* Set, clear, or get enabled state of the DMA request status. If + * enabled, an IN or OUT token will start a DMA transfer for the EP */ +#define USBD_DMARST(x) ((x) + 0x250) +#define USBD_DMARCLR(x) ((x) + 0x254) +#define USBD_DMARSET(x) ((x) + 0x258) +/* DMA UDCA head pointer */ +#define USBD_UDCAH(x) ((x) + 0x280) +/* EP DMA status, enable, and disable. This is used to specifically + * enabled or disable DMA for a specific EP */ +#define USBD_EPDMAST(x) ((x) + 0x284) +#define USBD_EPDMAEN(x) ((x) + 0x288) +#define USBD_EPDMADIS(x) ((x) + 0x28C) +/* DMA master interrupts enable and pending interrupts */ +#define USBD_DMAINTST(x) ((x) + 0x290) +#define USBD_DMAINTEN(x) ((x) + 0x294) +/* DMA end of transfer interrupt enable, disable, status */ +#define USBD_EOTINTST(x) ((x) + 0x2A0) +#define USBD_EOTINTCLR(x) ((x) + 0x2A4) +#define USBD_EOTINTSET(x) ((x) + 0x2A8) +/* New DD request interrupt enable, disable, status */ +#define USBD_NDDRTINTST(x) ((x) + 0x2AC) +#define USBD_NDDRTINTCLR(x) ((x) + 0x2B0) +#define USBD_NDDRTINTSET(x) ((x) + 0x2B4) +/* DMA error interrupt enable, disable, status */ +#define USBD_SYSERRTINTST(x) ((x) + 0x2B8) +#define USBD_SYSERRTINTCLR(x) ((x) + 0x2BC) +#define USBD_SYSERRTINTSET(x) ((x) + 0x2C0) + +/********************************************************************** + * USBD_DEVINTST/USBD_DEVINTEN/USBD_DEVINTCLR/USBD_DEVINTSET/ + * USBD_DEVINTPRI register definitions + **********************************************************************/ +#define USBD_ERR_INT (1 << 9) +#define USBD_EP_RLZED (1 << 8) +#define USBD_TXENDPKT (1 << 7) +#define USBD_RXENDPKT (1 << 6) +#define USBD_CDFULL (1 << 5) +#define USBD_CCEMPTY (1 << 4) +#define USBD_DEV_STAT (1 << 3) +#define USBD_EP_SLOW (1 << 2) +#define USBD_EP_FAST (1 << 1) +#define USBD_FRAME (1 << 0) + +/********************************************************************** + * USBD_EPINTST/USBD_EPINTEN/USBD_EPINTCLR/USBD_EPINTSET/ + * USBD_EPINTPRI register definitions + **********************************************************************/ +/* End point selection macro (RX) */ +#define USBD_RX_EP_SEL(e) (1 << ((e) << 1)) + +/* End point selection macro (TX) */ +#define USBD_TX_EP_SEL(e) (1 << (((e) << 1) + 1)) + +/********************************************************************** + * USBD_REEP/USBD_DMARST/USBD_DMARCLR/USBD_DMARSET/USBD_EPDMAST/ + * USBD_EPDMAEN/USBD_EPDMADIS/ + * USBD_NDDRTINTST/USBD_NDDRTINTCLR/USBD_NDDRTINTSET/ + * USBD_EOTINTST/USBD_EOTINTCLR/USBD_EOTINTSET/ + * USBD_SYSERRTINTST/USBD_SYSERRTINTCLR/USBD_SYSERRTINTSET + * register definitions + **********************************************************************/ +/* Endpoint selection macro */ +#define USBD_EP_SEL(e) (1 << (e)) + +/********************************************************************** + * SBD_DMAINTST/USBD_DMAINTEN + **********************************************************************/ +#define USBD_SYS_ERR_INT (1 << 2) +#define USBD_NEW_DD_INT (1 << 1) +#define USBD_EOT_INT (1 << 0) + +/********************************************************************** + * USBD_RXPLEN register definitions + **********************************************************************/ +#define USBD_PKT_RDY (1 << 11) +#define USBD_DV (1 << 10) +#define USBD_PK_LEN_MASK 0x3FF + +/********************************************************************** + * USBD_CTRL register definitions + **********************************************************************/ +#define USBD_LOG_ENDPOINT(e) ((e) << 2) +#define USBD_WR_EN (1 << 1) +#define USBD_RD_EN (1 << 0) + +/********************************************************************** + * USBD_CMDCODE register definitions + **********************************************************************/ +#define USBD_CMD_CODE(c) ((c) << 16) +#define USBD_CMD_PHASE(p) ((p) << 8) + +/********************************************************************** + * USBD_DMARST/USBD_DMARCLR/USBD_DMARSET register definitions + **********************************************************************/ +#define USBD_DMAEP(e) (1 << (e)) + +/* DD (DMA Descriptor) structure, requires word alignment */ +struct lpc32xx_usbd_dd { + u32 *dd_next; + u32 dd_setup; + u32 dd_buffer_addr; + u32 dd_status; + u32 dd_iso_ps_mem_addr; +}; + +/* dd_setup bit defines */ +#define DD_SETUP_ATLE_DMA_MODE 0x01 +#define DD_SETUP_NEXT_DD_VALID 0x04 +#define DD_SETUP_ISO_EP 0x10 +#define DD_SETUP_PACKETLEN(n) (((n) & 0x7FF) << 5) +#define DD_SETUP_DMALENBYTES(n) (((n) & 0xFFFF) << 16) + +/* dd_status bit defines */ +#define DD_STATUS_DD_RETIRED 0x01 +#define DD_STATUS_STS_MASK 0x1E +#define DD_STATUS_STS_NS 0x00 /* Not serviced */ +#define DD_STATUS_STS_BS 0x02 /* Being serviced */ +#define DD_STATUS_STS_NC 0x04 /* Normal completion */ +#define DD_STATUS_STS_DUR 0x06 /* Data underrun (short packet) */ +#define DD_STATUS_STS_DOR 0x08 /* Data overrun */ +#define DD_STATUS_STS_SE 0x12 /* System error */ +#define DD_STATUS_PKT_VAL 0x20 /* Packet valid */ +#define DD_STATUS_LSB_EX 0x40 /* LS byte extracted (ATLE) */ +#define DD_STATUS_MSB_EX 0x80 /* MS byte extracted (ATLE) */ +#define DD_STATUS_MLEN(n) (((n) >> 8) & 0x3F) +#define DD_STATUS_CURDMACNT(n) (((n) >> 16) & 0xFFFF) + +/* + * + * Protocol engine bits below + * + */ +/* Device Interrupt Bit Definitions */ +#define FRAME_INT 0x00000001 +#define EP_FAST_INT 0x00000002 +#define EP_SLOW_INT 0x00000004 +#define DEV_STAT_INT 0x00000008 +#define CCEMTY_INT 0x00000010 +#define CDFULL_INT 0x00000020 +#define RxENDPKT_INT 0x00000040 +#define TxENDPKT_INT 0x00000080 +#define EP_RLZED_INT 0x00000100 +#define ERR_INT 0x00000200 + +/* Rx & Tx Packet Length Definitions */ +#define PKT_LNGTH_MASK 0x000003FF +#define PKT_DV 0x00000400 +#define PKT_RDY 0x00000800 + +/* USB Control Definitions */ +#define CTRL_RD_EN 0x00000001 +#define CTRL_WR_EN 0x00000002 + +/* Command Codes */ +#define CMD_SET_ADDR 0x00D00500 +#define CMD_CFG_DEV 0x00D80500 +#define CMD_SET_MODE 0x00F30500 +#define CMD_RD_FRAME 0x00F50500 +#define DAT_RD_FRAME 0x00F50200 +#define CMD_RD_TEST 0x00FD0500 +#define DAT_RD_TEST 0x00FD0200 +#define CMD_SET_DEV_STAT 0x00FE0500 +#define CMD_GET_DEV_STAT 0x00FE0500 +#define DAT_GET_DEV_STAT 0x00FE0200 +#define CMD_GET_ERR_CODE 0x00FF0500 +#define DAT_GET_ERR_CODE 0x00FF0200 +#define CMD_RD_ERR_STAT 0x00FB0500 +#define DAT_RD_ERR_STAT 0x00FB0200 +#define DAT_WR_BYTE(x) (0x00000100 | ((x) << 16)) +#define CMD_SEL_EP(x) (0x00000500 | ((x) << 16)) +#define DAT_SEL_EP(x) (0x00000200 | ((x) << 16)) +#define CMD_SEL_EP_CLRI(x) (0x00400500 | ((x) << 16)) +#define DAT_SEL_EP_CLRI(x) (0x00400200 | ((x) << 16)) +#define CMD_SET_EP_STAT(x) (0x00400500 | ((x) << 16)) +#define CMD_CLR_BUF 0x00F20500 +#define DAT_CLR_BUF 0x00F20200 +#define CMD_VALID_BUF 0x00FA0500 + +/* Device Address Register Definitions */ +#define DEV_ADDR_MASK 0x7F +#define DEV_EN 0x80 + +/* Device Configure Register Definitions */ +#define CONF_DVICE 0x01 + +/* Device Mode Register Definitions */ +#define AP_CLK 0x01 +#define INAK_CI 0x02 +#define INAK_CO 0x04 +#define INAK_II 0x08 +#define INAK_IO 0x10 +#define INAK_BI 0x20 +#define INAK_BO 0x40 + +/* Device Status Register Definitions */ +#define DEV_CON 0x01 +#define DEV_CON_CH 0x02 +#define DEV_SUS 0x04 +#define DEV_SUS_CH 0x08 +#define DEV_RST 0x10 + +/* Error Code Register Definitions */ +#define ERR_EC_MASK 0x0F +#define ERR_EA 0x10 + +/* Error Status Register Definitions */ +#define ERR_PID 0x01 +#define ERR_UEPKT 0x02 +#define ERR_DCRC 0x04 +#define ERR_TIMOUT 0x08 +#define ERR_EOP 0x10 +#define ERR_B_OVRN 0x20 +#define ERR_BTSTF 0x40 +#define ERR_TGL 0x80 + +/* Endpoint Select Register Definitions */ +#define EP_SEL_F 0x01 +#define EP_SEL_ST 0x02 +#define EP_SEL_STP 0x04 +#define EP_SEL_PO 0x08 +#define EP_SEL_EPN 0x10 +#define EP_SEL_B_1_FULL 0x20 +#define EP_SEL_B_2_FULL 0x40 + +/* Endpoint Status Register Definitions */ +#define EP_STAT_ST 0x01 +#define EP_STAT_DA 0x20 +#define EP_STAT_RF_MO 0x40 +#define EP_STAT_CND_ST 0x80 + +/* Clear Buffer Register Definitions */ +#define CLR_BUF_PO 0x01 + +/* DMA Interrupt Bit Definitions */ +#define EOT_INT 0x01 +#define NDD_REQ_INT 0x02 +#define SYS_ERR_INT 0x04 + +#define DRIVER_VERSION "1.03" +static const char driver_name[] = "lpc32xx_udc"; + +/* + * + * proc interface support + * + */ +#ifdef CONFIG_USB_GADGET_DEBUG_FILES +static char *epnames[] = {"INT", "ISO", "BULK", "CTRL"}; +static const char debug_filename[] = "driver/udc"; + +static void proc_ep_show(struct seq_file *s, struct lpc32xx_ep *ep) +{ + struct lpc32xx_request *req; + + seq_printf(s, "\n"); + seq_printf(s, "%12s, maxpacket %4d %3s", + ep->ep.name, ep->ep.maxpacket, + ep->is_in ? "in" : "out"); + seq_printf(s, " type %4s", epnames[ep->eptype]); + seq_printf(s, " ints: %12d", ep->totalints); + + if (list_empty(&ep->queue)) + seq_printf(s, "\t(queue empty)\n"); + else { + list_for_each_entry(req, &ep->queue, queue) { + u32 length = req->req.actual; + + seq_printf(s, "\treq %p len %d/%d buf %p\n", + &req->req, length, + req->req.length, req->req.buf); + } + } +} + +static int proc_udc_show(struct seq_file *s, void *unused) +{ + struct lpc32xx_udc *udc = s->private; + struct lpc32xx_ep *ep; + unsigned long flags; + + seq_printf(s, "%s: version %s\n", driver_name, DRIVER_VERSION); + + spin_lock_irqsave(&udc->lock, flags); + + seq_printf(s, "vbus %s, pullup %s, %s powered%s, gadget %s\n\n", + udc->vbus ? "present" : "off", + udc->enabled ? (udc->vbus ? "active" : "enabled") : + "disabled", + udc->selfpowered ? "self" : "VBUS", + udc->suspended ? ", suspended" : "", + udc->driver ? udc->driver->driver.name : "(none)"); + + if (udc->enabled && udc->vbus) { + proc_ep_show(s, &udc->ep[0]); + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) + proc_ep_show(s, ep); + } + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static int proc_udc_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_udc_show, PDE_DATA(inode)); +} + +static const struct file_operations proc_ops = { + .owner = THIS_MODULE, + .open = proc_udc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void create_debug_file(struct lpc32xx_udc *udc) +{ + udc->pde = debugfs_create_file(debug_filename, 0, NULL, udc, &proc_ops); +} + +static void remove_debug_file(struct lpc32xx_udc *udc) +{ + if (udc->pde) + debugfs_remove(udc->pde); +} + +#else +static inline void create_debug_file(struct lpc32xx_udc *udc) {} +static inline void remove_debug_file(struct lpc32xx_udc *udc) {} +#endif + +/* Primary initialization sequence for the ISP1301 transceiver */ +static void isp1301_udc_configure(struct lpc32xx_udc *udc) +{ + /* LPC32XX only supports DAT_SE0 USB mode */ + /* This sequence is important */ + + /* Disable transparent UART mode first */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + (ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), + MC1_UART_EN); + + /* Set full speed and SE0 mode */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + (ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_MODE_CONTROL_1, (MC1_SPEED_REG | MC1_DAT_SE0)); + + /* + * The PSW_OE enable bit state is reversed in the ISP1301 User's Guide + */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + (ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR), ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_MODE_CONTROL_2, (MC2_BI_DI | MC2_SPD_SUSP_CTRL)); + + /* Driver VBUS_DRV high or low depending on board setup */ + if (udc->board->vbus_drv_pol != 0) + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1, OTG1_VBUS_DRV); + else + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR, + OTG1_VBUS_DRV); + + /* Bi-directional mode with suspend control + * Enable both pulldowns for now - the pullup will be enable when VBUS + * is detected */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1, + (0 | OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN)); + + /* Discharge VBUS (just in case) */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1, OTG1_VBUS_DISCHRG); + msleep(1); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), + OTG1_VBUS_DISCHRG); + + /* Clear and enable VBUS high edge interrupt */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_LATCH | ISP1301_I2C_REG_CLEAR_ADDR, ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR, ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_FALLING, INT_VBUS_VLD); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_RISING, INT_VBUS_VLD); + + /* Enable usb_need_clk clock after transceiver is initialized */ + writel((readl(USB_CTRL) | USB_DEV_NEED_CLK_EN), USB_CTRL); + + dev_info(udc->dev, "ISP1301 Vendor ID : 0x%04x\n", + i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x00)); + dev_info(udc->dev, "ISP1301 Product ID : 0x%04x\n", + i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x02)); + dev_info(udc->dev, "ISP1301 Version ID : 0x%04x\n", + i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x14)); +} + +/* Enables or disables the USB device pullup via the ISP1301 transceiver */ +static void isp1301_pullup_set(struct lpc32xx_udc *udc) +{ + if (udc->pullup) + /* Enable pullup for bus signalling */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1, OTG1_DP_PULLUP); + else + /* Enable pullup for bus signalling */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR, + OTG1_DP_PULLUP); +} + +static void pullup_work(struct work_struct *work) +{ + struct lpc32xx_udc *udc = + container_of(work, struct lpc32xx_udc, pullup_job); + + isp1301_pullup_set(udc); +} + +static void isp1301_pullup_enable(struct lpc32xx_udc *udc, int en_pullup, + int block) +{ + if (en_pullup == udc->pullup) + return; + + udc->pullup = en_pullup; + if (block) + isp1301_pullup_set(udc); + else + /* defer slow i2c pull up setting */ + schedule_work(&udc->pullup_job); +} + +#ifdef CONFIG_PM +/* Powers up or down the ISP1301 transceiver */ +static void isp1301_set_powerstate(struct lpc32xx_udc *udc, int enable) +{ + if (enable != 0) + /* Power up ISP1301 - this ISP1301 will automatically wakeup + when VBUS is detected */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR, + MC2_GLOBAL_PWR_DN); + else + /* Power down ISP1301 */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_MODE_CONTROL_2, MC2_GLOBAL_PWR_DN); +} + +static void power_work(struct work_struct *work) +{ + struct lpc32xx_udc *udc = + container_of(work, struct lpc32xx_udc, power_job); + + isp1301_set_powerstate(udc, udc->poweron); +} +#endif + +/* + * + * USB protocol engine command/data read/write helper functions + * + */ +/* Issues a single command to the USB device state machine */ +static void udc_protocol_cmd_w(struct lpc32xx_udc *udc, u32 cmd) +{ + u32 pass = 0; + int to; + + /* EP may lock on CLRI if this read isn't done */ + u32 tmp = readl(USBD_DEVINTST(udc->udp_baseaddr)); + (void) tmp; + + while (pass == 0) { + writel(USBD_CCEMPTY, USBD_DEVINTCLR(udc->udp_baseaddr)); + + /* Write command code */ + writel(cmd, USBD_CMDCODE(udc->udp_baseaddr)); + to = 10000; + while (((readl(USBD_DEVINTST(udc->udp_baseaddr)) & + USBD_CCEMPTY) == 0) && (to > 0)) { + to--; + } + + if (to > 0) + pass = 1; + + cpu_relax(); + } +} + +/* Issues 2 commands (or command and data) to the USB device state machine */ +static inline void udc_protocol_cmd_data_w(struct lpc32xx_udc *udc, u32 cmd, + u32 data) +{ + udc_protocol_cmd_w(udc, cmd); + udc_protocol_cmd_w(udc, data); +} + +/* Issues a single command to the USB device state machine and reads + * response data */ +static u32 udc_protocol_cmd_r(struct lpc32xx_udc *udc, u32 cmd) +{ + u32 tmp; + int to = 1000; + + /* Write a command and read data from the protocol engine */ + writel((USBD_CDFULL | USBD_CCEMPTY), + USBD_DEVINTCLR(udc->udp_baseaddr)); + + /* Write command code */ + udc_protocol_cmd_w(udc, cmd); + + tmp = readl(USBD_DEVINTST(udc->udp_baseaddr)); + while ((!(readl(USBD_DEVINTST(udc->udp_baseaddr)) & USBD_CDFULL)) + && (to > 0)) + to--; + if (!to) + dev_dbg(udc->dev, + "Protocol engine didn't receive response (CDFULL)\n"); + + return readl(USBD_CMDDATA(udc->udp_baseaddr)); +} + +/* + * + * USB device interrupt mask support functions + * + */ +/* Enable one or more USB device interrupts */ +static inline void uda_enable_devint(struct lpc32xx_udc *udc, u32 devmask) +{ + udc->enabled_devints |= devmask; + writel(udc->enabled_devints, USBD_DEVINTEN(udc->udp_baseaddr)); +} + +/* Disable one or more USB device interrupts */ +static inline void uda_disable_devint(struct lpc32xx_udc *udc, u32 mask) +{ + udc->enabled_devints &= ~mask; + writel(udc->enabled_devints, USBD_DEVINTEN(udc->udp_baseaddr)); +} + +/* Clear one or more USB device interrupts */ +static inline void uda_clear_devint(struct lpc32xx_udc *udc, u32 mask) +{ + writel(mask, USBD_DEVINTCLR(udc->udp_baseaddr)); +} + +/* + * + * Endpoint interrupt disable/enable functions + * + */ +/* Enable one or more USB endpoint interrupts */ +static void uda_enable_hwepint(struct lpc32xx_udc *udc, u32 hwep) +{ + udc->enabled_hwepints |= (1 << hwep); + writel(udc->enabled_hwepints, USBD_EPINTEN(udc->udp_baseaddr)); +} + +/* Disable one or more USB endpoint interrupts */ +static void uda_disable_hwepint(struct lpc32xx_udc *udc, u32 hwep) +{ + udc->enabled_hwepints &= ~(1 << hwep); + writel(udc->enabled_hwepints, USBD_EPINTEN(udc->udp_baseaddr)); +} + +/* Clear one or more USB endpoint interrupts */ +static inline void uda_clear_hwepint(struct lpc32xx_udc *udc, u32 hwep) +{ + writel((1 << hwep), USBD_EPINTCLR(udc->udp_baseaddr)); +} + +/* Enable DMA for the HW channel */ +static inline void udc_ep_dma_enable(struct lpc32xx_udc *udc, u32 hwep) +{ + writel((1 << hwep), USBD_EPDMAEN(udc->udp_baseaddr)); +} + +/* Disable DMA for the HW channel */ +static inline void udc_ep_dma_disable(struct lpc32xx_udc *udc, u32 hwep) +{ + writel((1 << hwep), USBD_EPDMADIS(udc->udp_baseaddr)); +} + +/* + * + * Endpoint realize/unrealize functions + * + */ +/* Before an endpoint can be used, it needs to be realized + * in the USB protocol engine - this realizes the endpoint. + * The interrupt (FIFO or DMA) is not enabled with this function */ +static void udc_realize_hwep(struct lpc32xx_udc *udc, u32 hwep, + u32 maxpacket) +{ + int to = 1000; + + writel(USBD_EP_RLZED, USBD_DEVINTCLR(udc->udp_baseaddr)); + writel(hwep, USBD_EPIND(udc->udp_baseaddr)); + udc->realized_eps |= (1 << hwep); + writel(udc->realized_eps, USBD_REEP(udc->udp_baseaddr)); + writel(maxpacket, USBD_EPMAXPSIZE(udc->udp_baseaddr)); + + /* Wait until endpoint is realized in hardware */ + while ((!(readl(USBD_DEVINTST(udc->udp_baseaddr)) & + USBD_EP_RLZED)) && (to > 0)) + to--; + if (!to) + dev_dbg(udc->dev, "EP not correctly realized in hardware\n"); + + writel(USBD_EP_RLZED, USBD_DEVINTCLR(udc->udp_baseaddr)); +} + +/* Unrealize an EP */ +static void udc_unrealize_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc->realized_eps &= ~(1 << hwep); + writel(udc->realized_eps, USBD_REEP(udc->udp_baseaddr)); +} + +/* + * + * Endpoint support functions + * + */ +/* Select and clear endpoint interrupt */ +static u32 udc_selep_clrint(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_protocol_cmd_w(udc, CMD_SEL_EP_CLRI(hwep)); + return udc_protocol_cmd_r(udc, DAT_SEL_EP_CLRI(hwep)); +} + +/* Disables the endpoint in the USB protocol engine */ +static void udc_disable_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_protocol_cmd_data_w(udc, CMD_SET_EP_STAT(hwep), + DAT_WR_BYTE(EP_STAT_DA)); +} + +/* Stalls the endpoint - endpoint will return STALL */ +static void udc_stall_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_protocol_cmd_data_w(udc, CMD_SET_EP_STAT(hwep), + DAT_WR_BYTE(EP_STAT_ST)); +} + +/* Clear stall or reset endpoint */ +static void udc_clrstall_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_protocol_cmd_data_w(udc, CMD_SET_EP_STAT(hwep), + DAT_WR_BYTE(0)); +} + +/* Select an endpoint for endpoint status, clear, validate */ +static void udc_select_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_protocol_cmd_w(udc, CMD_SEL_EP(hwep)); +} + +/* + * + * Endpoint buffer management functions + * + */ +/* Clear the current endpoint's buffer */ +static void udc_clr_buffer_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_select_hwep(udc, hwep); + udc_protocol_cmd_w(udc, CMD_CLR_BUF); +} + +/* Validate the current endpoint's buffer */ +static void udc_val_buffer_hwep(struct lpc32xx_udc *udc, u32 hwep) +{ + udc_select_hwep(udc, hwep); + udc_protocol_cmd_w(udc, CMD_VALID_BUF); +} + +static inline u32 udc_clearep_getsts(struct lpc32xx_udc *udc, u32 hwep) +{ + /* Clear EP interrupt */ + uda_clear_hwepint(udc, hwep); + return udc_selep_clrint(udc, hwep); +} + +/* + * + * USB EP DMA support + * + */ +/* Allocate a DMA Descriptor */ +static struct lpc32xx_usbd_dd_gad *udc_dd_alloc(struct lpc32xx_udc *udc) +{ + dma_addr_t dma; + struct lpc32xx_usbd_dd_gad *dd; + + dd = (struct lpc32xx_usbd_dd_gad *) dma_pool_alloc( + udc->dd_cache, (GFP_KERNEL | GFP_DMA), &dma); + if (dd) + dd->this_dma = dma; + + return dd; +} + +/* Free a DMA Descriptor */ +static void udc_dd_free(struct lpc32xx_udc *udc, struct lpc32xx_usbd_dd_gad *dd) +{ + dma_pool_free(udc->dd_cache, dd, dd->this_dma); +} + +/* + * + * USB setup and shutdown functions + * + */ +/* Enables or disables most of the USB system clocks when low power mode is + * needed. Clocks are typically started on a connection event, and disabled + * when a cable is disconnected */ +static void udc_clk_set(struct lpc32xx_udc *udc, int enable) +{ + if (enable != 0) { + if (udc->clocked) + return; + + udc->clocked = 1; + + /* 48MHz PLL up */ + clk_enable(udc->usb_pll_clk); + + /* Enable the USB device clock */ + writel(readl(USB_CTRL) | USB_DEV_NEED_CLK_EN, + USB_CTRL); + + clk_enable(udc->usb_otg_clk); + } else { + if (!udc->clocked) + return; + + udc->clocked = 0; + + /* Never disable the USB_HCLK during normal operation */ + + /* 48MHz PLL dpwn */ + clk_disable(udc->usb_pll_clk); + + /* Disable the USB device clock */ + writel(readl(USB_CTRL) & ~USB_DEV_NEED_CLK_EN, + USB_CTRL); + + clk_disable(udc->usb_otg_clk); + } +} + +/* Set/reset USB device address */ +static void udc_set_address(struct lpc32xx_udc *udc, u32 addr) +{ + /* Address will be latched at the end of the status phase, or + latched immediately if function is called twice */ + udc_protocol_cmd_data_w(udc, CMD_SET_ADDR, + DAT_WR_BYTE(DEV_EN | addr)); +} + +/* Setup up a IN request for DMA transfer - this consists of determining the + * list of DMA addresses for the transfer, allocating DMA Descriptors, + * installing the DD into the UDCA, and then enabling the DMA for that EP */ +static int udc_ep_in_req_dma(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +{ + struct lpc32xx_request *req; + u32 hwep = ep->hwep_num; + + ep->req_pending = 1; + + /* There will always be a request waiting here */ + req = list_entry(ep->queue.next, struct lpc32xx_request, queue); + + /* Place the DD Descriptor into the UDCA */ + udc->udca_v_base[hwep] = req->dd_desc_ptr->this_dma; + + /* Enable DMA and interrupt for the HW EP */ + udc_ep_dma_enable(udc, hwep); + + /* Clear ZLP if last packet is not of MAXP size */ + if (req->req.length % ep->ep.maxpacket) + req->send_zlp = 0; + + return 0; +} + +/* Setup up a OUT request for DMA transfer - this consists of determining the + * list of DMA addresses for the transfer, allocating DMA Descriptors, + * installing the DD into the UDCA, and then enabling the DMA for that EP */ +static int udc_ep_out_req_dma(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +{ + struct lpc32xx_request *req; + u32 hwep = ep->hwep_num; + + ep->req_pending = 1; + + /* There will always be a request waiting here */ + req = list_entry(ep->queue.next, struct lpc32xx_request, queue); + + /* Place the DD Descriptor into the UDCA */ + udc->udca_v_base[hwep] = req->dd_desc_ptr->this_dma; + + /* Enable DMA and interrupt for the HW EP */ + udc_ep_dma_enable(udc, hwep); + return 0; +} + +static void udc_disable(struct lpc32xx_udc *udc) +{ + u32 i; + + /* Disable device */ + udc_protocol_cmd_data_w(udc, CMD_CFG_DEV, DAT_WR_BYTE(0)); + udc_protocol_cmd_data_w(udc, CMD_SET_DEV_STAT, DAT_WR_BYTE(0)); + + /* Disable all device interrupts (including EP0) */ + uda_disable_devint(udc, 0x3FF); + + /* Disable and reset all endpoint interrupts */ + for (i = 0; i < 32; i++) { + uda_disable_hwepint(udc, i); + uda_clear_hwepint(udc, i); + udc_disable_hwep(udc, i); + udc_unrealize_hwep(udc, i); + udc->udca_v_base[i] = 0; + + /* Disable and clear all interrupts and DMA */ + udc_ep_dma_disable(udc, i); + writel((1 << i), USBD_EOTINTCLR(udc->udp_baseaddr)); + writel((1 << i), USBD_NDDRTINTCLR(udc->udp_baseaddr)); + writel((1 << i), USBD_SYSERRTINTCLR(udc->udp_baseaddr)); + writel((1 << i), USBD_DMARCLR(udc->udp_baseaddr)); + } + + /* Disable DMA interrupts */ + writel(0, USBD_DMAINTEN(udc->udp_baseaddr)); + + writel(0, USBD_UDCAH(udc->udp_baseaddr)); +} + +static void udc_enable(struct lpc32xx_udc *udc) +{ + u32 i; + struct lpc32xx_ep *ep = &udc->ep[0]; + + /* Start with known state */ + udc_disable(udc); + + /* Enable device */ + udc_protocol_cmd_data_w(udc, CMD_SET_DEV_STAT, DAT_WR_BYTE(DEV_CON)); + + /* EP interrupts on high priority, FRAME interrupt on low priority */ + writel(USBD_EP_FAST, USBD_DEVINTPRI(udc->udp_baseaddr)); + writel(0xFFFF, USBD_EPINTPRI(udc->udp_baseaddr)); + + /* Clear any pending device interrupts */ + writel(0x3FF, USBD_DEVINTCLR(udc->udp_baseaddr)); + + /* Setup UDCA - not yet used (DMA) */ + writel(udc->udca_p_base, USBD_UDCAH(udc->udp_baseaddr)); + + /* Only enable EP0 in and out for now, EP0 only works in FIFO mode */ + for (i = 0; i <= 1; i++) { + udc_realize_hwep(udc, i, ep->ep.maxpacket); + uda_enable_hwepint(udc, i); + udc_select_hwep(udc, i); + udc_clrstall_hwep(udc, i); + udc_clr_buffer_hwep(udc, i); + } + + /* Device interrupt setup */ + uda_clear_devint(udc, (USBD_ERR_INT | USBD_DEV_STAT | USBD_EP_SLOW | + USBD_EP_FAST)); + uda_enable_devint(udc, (USBD_ERR_INT | USBD_DEV_STAT | USBD_EP_SLOW | + USBD_EP_FAST)); + + /* Set device address to 0 - called twice to force a latch in the USB + engine without the need of a setup packet status closure */ + udc_set_address(udc, 0); + udc_set_address(udc, 0); + + /* Enable master DMA interrupts */ + writel((USBD_SYS_ERR_INT | USBD_EOT_INT), + USBD_DMAINTEN(udc->udp_baseaddr)); + + udc->dev_status = 0; +} + +/* + * + * USB device board specific events handled via callbacks + * + */ +/* Connection change event - notify board function of change */ +static void uda_power_event(struct lpc32xx_udc *udc, u32 conn) +{ + /* Just notify of a connection change event (optional) */ + if (udc->board->conn_chgb != NULL) + udc->board->conn_chgb(conn); +} + +/* Suspend/resume event - notify board function of change */ +static void uda_resm_susp_event(struct lpc32xx_udc *udc, u32 conn) +{ + /* Just notify of a Suspend/resume change event (optional) */ + if (udc->board->susp_chgb != NULL) + udc->board->susp_chgb(conn); + + if (conn) + udc->suspended = 0; + else + udc->suspended = 1; +} + +/* Remote wakeup enable/disable - notify board function of change */ +static void uda_remwkp_cgh(struct lpc32xx_udc *udc) +{ + if (udc->board->rmwk_chgb != NULL) + udc->board->rmwk_chgb(udc->dev_status & + (1 << USB_DEVICE_REMOTE_WAKEUP)); +} + +/* Reads data from FIFO, adjusts for alignment and data size */ +static void udc_pop_fifo(struct lpc32xx_udc *udc, u8 *data, u32 bytes) +{ + int n, i, bl; + u16 *p16; + u32 *p32, tmp, cbytes; + + /* Use optimal data transfer method based on source address and size */ + switch (((u32) data) & 0x3) { + case 0: /* 32-bit aligned */ + p32 = (u32 *) data; + cbytes = (bytes & ~0x3); + + /* Copy 32-bit aligned data first */ + for (n = 0; n < cbytes; n += 4) + *p32++ = readl(USBD_RXDATA(udc->udp_baseaddr)); + + /* Handle any remaining bytes */ + bl = bytes - cbytes; + if (bl) { + tmp = readl(USBD_RXDATA(udc->udp_baseaddr)); + for (n = 0; n < bl; n++) + data[cbytes + n] = ((tmp >> (n * 8)) & 0xFF); + + } + break; + + case 1: /* 8-bit aligned */ + case 3: + /* Each byte has to be handled independently */ + for (n = 0; n < bytes; n += 4) { + tmp = readl(USBD_RXDATA(udc->udp_baseaddr)); + + bl = bytes - n; + if (bl > 3) + bl = 3; + + for (i = 0; i < bl; i++) + data[n + i] = (u8) ((tmp >> (n * 8)) & 0xFF); + } + break; + + case 2: /* 16-bit aligned */ + p16 = (u16 *) data; + cbytes = (bytes & ~0x3); + + /* Copy 32-bit sized objects first with 16-bit alignment */ + for (n = 0; n < cbytes; n += 4) { + tmp = readl(USBD_RXDATA(udc->udp_baseaddr)); + *p16++ = (u16)(tmp & 0xFFFF); + *p16++ = (u16)((tmp >> 16) & 0xFFFF); + } + + /* Handle any remaining bytes */ + bl = bytes - cbytes; + if (bl) { + tmp = readl(USBD_RXDATA(udc->udp_baseaddr)); + for (n = 0; n < bl; n++) + data[cbytes + n] = ((tmp >> (n * 8)) & 0xFF); + } + break; + } +} + +/* Read data from the FIFO for an endpoint. This function is for endpoints (such + * as EP0) that don't use DMA. This function should only be called if a packet + * is known to be ready to read for the endpoint. Note that the endpoint must + * be selected in the protocol engine prior to this call. */ +static u32 udc_read_hwep(struct lpc32xx_udc *udc, u32 hwep, u32 *data, + u32 bytes) +{ + u32 tmpv; + int to = 1000; + u32 tmp, hwrep = ((hwep & 0x1E) << 1) | CTRL_RD_EN; + + /* Setup read of endpoint */ + writel(hwrep, USBD_CTRL(udc->udp_baseaddr)); + + /* Wait until packet is ready */ + while ((((tmpv = readl(USBD_RXPLEN(udc->udp_baseaddr))) & + PKT_RDY) == 0) && (to > 0)) + to--; + if (!to) + dev_dbg(udc->dev, "No packet ready on FIFO EP read\n"); + + /* Mask out count */ + tmp = tmpv & PKT_LNGTH_MASK; + if (bytes < tmp) + tmp = bytes; + + if ((tmp > 0) && (data != NULL)) + udc_pop_fifo(udc, (u8 *) data, tmp); + + writel(((hwep & 0x1E) << 1), USBD_CTRL(udc->udp_baseaddr)); + + /* Clear the buffer */ + udc_clr_buffer_hwep(udc, hwep); + + return tmp; +} + +/* Stuffs data into the FIFO, adjusts for alignment and data size */ +static void udc_stuff_fifo(struct lpc32xx_udc *udc, u8 *data, u32 bytes) +{ + int n, i, bl; + u16 *p16; + u32 *p32, tmp, cbytes; + + /* Use optimal data transfer method based on source address and size */ + switch (((u32) data) & 0x3) { + case 0: /* 32-bit aligned */ + p32 = (u32 *) data; + cbytes = (bytes & ~0x3); + + /* Copy 32-bit aligned data first */ + for (n = 0; n < cbytes; n += 4) + writel(*p32++, USBD_TXDATA(udc->udp_baseaddr)); + + /* Handle any remaining bytes */ + bl = bytes - cbytes; + if (bl) { + tmp = 0; + for (n = 0; n < bl; n++) + tmp |= data[cbytes + n] << (n * 8); + + writel(tmp, USBD_TXDATA(udc->udp_baseaddr)); + } + break; + + case 1: /* 8-bit aligned */ + case 3: + /* Each byte has to be handled independently */ + for (n = 0; n < bytes; n += 4) { + bl = bytes - n; + if (bl > 4) + bl = 4; + + tmp = 0; + for (i = 0; i < bl; i++) + tmp |= data[n + i] << (i * 8); + + writel(tmp, USBD_TXDATA(udc->udp_baseaddr)); + } + break; + + case 2: /* 16-bit aligned */ + p16 = (u16 *) data; + cbytes = (bytes & ~0x3); + + /* Copy 32-bit aligned data first */ + for (n = 0; n < cbytes; n += 4) { + tmp = *p16++ & 0xFFFF; + tmp |= (*p16++ & 0xFFFF) << 16; + writel(tmp, USBD_TXDATA(udc->udp_baseaddr)); + } + + /* Handle any remaining bytes */ + bl = bytes - cbytes; + if (bl) { + tmp = 0; + for (n = 0; n < bl; n++) + tmp |= data[cbytes + n] << (n * 8); + + writel(tmp, USBD_TXDATA(udc->udp_baseaddr)); + } + break; + } +} + +/* Write data to the FIFO for an endpoint. This function is for endpoints (such + * as EP0) that don't use DMA. Note that the endpoint must be selected in the + * protocol engine prior to this call. */ +static void udc_write_hwep(struct lpc32xx_udc *udc, u32 hwep, u32 *data, + u32 bytes) +{ + u32 hwwep = ((hwep & 0x1E) << 1) | CTRL_WR_EN; + + if ((bytes > 0) && (data == NULL)) + return; + + /* Setup write of endpoint */ + writel(hwwep, USBD_CTRL(udc->udp_baseaddr)); + + writel(bytes, USBD_TXPLEN(udc->udp_baseaddr)); + + /* Need at least 1 byte to trigger TX */ + if (bytes == 0) + writel(0, USBD_TXDATA(udc->udp_baseaddr)); + else + udc_stuff_fifo(udc, (u8 *) data, bytes); + + writel(((hwep & 0x1E) << 1), USBD_CTRL(udc->udp_baseaddr)); + + udc_val_buffer_hwep(udc, hwep); +} + +/* USB device reset - resets USB to a default state with just EP0 + enabled */ +static void uda_usb_reset(struct lpc32xx_udc *udc) +{ + u32 i = 0; + /* Re-init device controller and EP0 */ + udc_enable(udc); + udc->gadget.speed = USB_SPEED_FULL; + + for (i = 1; i < NUM_ENDPOINTS; i++) { + struct lpc32xx_ep *ep = &udc->ep[i]; + ep->req_pending = 0; + } +} + +/* Send a ZLP on EP0 */ +static void udc_ep0_send_zlp(struct lpc32xx_udc *udc) +{ + udc_write_hwep(udc, EP_IN, NULL, 0); +} + +/* Get current frame number */ +static u16 udc_get_current_frame(struct lpc32xx_udc *udc) +{ + u16 flo, fhi; + + udc_protocol_cmd_w(udc, CMD_RD_FRAME); + flo = (u16) udc_protocol_cmd_r(udc, DAT_RD_FRAME); + fhi = (u16) udc_protocol_cmd_r(udc, DAT_RD_FRAME); + + return (fhi << 8) | flo; +} + +/* Set the device as configured - enables all endpoints */ +static inline void udc_set_device_configured(struct lpc32xx_udc *udc) +{ + udc_protocol_cmd_data_w(udc, CMD_CFG_DEV, DAT_WR_BYTE(CONF_DVICE)); +} + +/* Set the device as unconfigured - disables all endpoints */ +static inline void udc_set_device_unconfigured(struct lpc32xx_udc *udc) +{ + udc_protocol_cmd_data_w(udc, CMD_CFG_DEV, DAT_WR_BYTE(0)); +} + +/* reinit == restore initial software state */ +static void udc_reinit(struct lpc32xx_udc *udc) +{ + u32 i; + + INIT_LIST_HEAD(&udc->gadget.ep_list); + INIT_LIST_HEAD(&udc->gadget.ep0->ep_list); + + for (i = 0; i < NUM_ENDPOINTS; i++) { + struct lpc32xx_ep *ep = &udc->ep[i]; + + if (i != 0) + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); + INIT_LIST_HEAD(&ep->queue); + ep->req_pending = 0; + } + + udc->ep0state = WAIT_FOR_SETUP; +} + +/* Must be called with lock */ +static void done(struct lpc32xx_ep *ep, struct lpc32xx_request *req, int status) +{ + struct lpc32xx_udc *udc = ep->udc; + + list_del_init(&req->queue); + if (req->req.status == -EINPROGRESS) + req->req.status = status; + else + status = req->req.status; + + if (ep->lep) { + usb_gadget_unmap_request(&udc->gadget, &req->req, ep->is_in); + + /* Free DDs */ + udc_dd_free(udc, req->dd_desc_ptr); + } + + if (status && status != -ESHUTDOWN) + ep_dbg(ep, "%s done %p, status %d\n", ep->ep.name, req, status); + + ep->req_pending = 0; + spin_unlock(&udc->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&udc->lock); +} + +/* Must be called with lock */ +static void nuke(struct lpc32xx_ep *ep, int status) +{ + struct lpc32xx_request *req; + + while (!list_empty(&ep->queue)) { + req = list_entry(ep->queue.next, struct lpc32xx_request, queue); + done(ep, req, status); + } + + if (status == -ESHUTDOWN) { + uda_disable_hwepint(ep->udc, ep->hwep_num); + udc_disable_hwep(ep->udc, ep->hwep_num); + } +} + +/* IN endpoint 0 transfer */ +static int udc_ep0_in_req(struct lpc32xx_udc *udc) +{ + struct lpc32xx_request *req; + struct lpc32xx_ep *ep0 = &udc->ep[0]; + u32 tsend, ts = 0; + + if (list_empty(&ep0->queue)) + /* Nothing to send */ + return 0; + else + req = list_entry(ep0->queue.next, struct lpc32xx_request, + queue); + + tsend = ts = req->req.length - req->req.actual; + if (ts == 0) { + /* Send a ZLP */ + udc_ep0_send_zlp(udc); + done(ep0, req, 0); + return 1; + } else if (ts > ep0->ep.maxpacket) + ts = ep0->ep.maxpacket; /* Just send what we can */ + + /* Write data to the EP0 FIFO and start transfer */ + udc_write_hwep(udc, EP_IN, (req->req.buf + req->req.actual), ts); + + /* Increment data pointer */ + req->req.actual += ts; + + if (tsend >= ep0->ep.maxpacket) + return 0; /* Stay in data transfer state */ + + /* Transfer request is complete */ + udc->ep0state = WAIT_FOR_SETUP; + done(ep0, req, 0); + return 1; +} + +/* OUT endpoint 0 transfer */ +static int udc_ep0_out_req(struct lpc32xx_udc *udc) +{ + struct lpc32xx_request *req; + struct lpc32xx_ep *ep0 = &udc->ep[0]; + u32 tr, bufferspace; + + if (list_empty(&ep0->queue)) + return 0; + else + req = list_entry(ep0->queue.next, struct lpc32xx_request, + queue); + + if (req) { + if (req->req.length == 0) { + /* Just dequeue request */ + done(ep0, req, 0); + udc->ep0state = WAIT_FOR_SETUP; + return 1; + } + + /* Get data from FIFO */ + bufferspace = req->req.length - req->req.actual; + if (bufferspace > ep0->ep.maxpacket) + bufferspace = ep0->ep.maxpacket; + + /* Copy data to buffer */ + prefetchw(req->req.buf + req->req.actual); + tr = udc_read_hwep(udc, EP_OUT, req->req.buf + req->req.actual, + bufferspace); + req->req.actual += bufferspace; + + if (tr < ep0->ep.maxpacket) { + /* This is the last packet */ + done(ep0, req, 0); + udc->ep0state = WAIT_FOR_SETUP; + return 1; + } + } + + return 0; +} + +/* Must be called with lock */ +static void stop_activity(struct lpc32xx_udc *udc) +{ + struct usb_gadget_driver *driver = udc->driver; + int i; + + if (udc->gadget.speed == USB_SPEED_UNKNOWN) + driver = NULL; + + udc->gadget.speed = USB_SPEED_UNKNOWN; + udc->suspended = 0; + + for (i = 0; i < NUM_ENDPOINTS; i++) { + struct lpc32xx_ep *ep = &udc->ep[i]; + nuke(ep, -ESHUTDOWN); + } + if (driver) { + spin_unlock(&udc->lock); + driver->disconnect(&udc->gadget); + spin_lock(&udc->lock); + } + + isp1301_pullup_enable(udc, 0, 0); + udc_disable(udc); + udc_reinit(udc); +} + +/* + * Activate or kill host pullup + * Can be called with or without lock + */ +static void pullup(struct lpc32xx_udc *udc, int is_on) +{ + if (!udc->clocked) + return; + + if (!udc->enabled || !udc->vbus) + is_on = 0; + + if (is_on != udc->pullup) + isp1301_pullup_enable(udc, is_on, 0); +} + +/* Must be called without lock */ +static int lpc32xx_ep_disable(struct usb_ep *_ep) +{ + struct lpc32xx_ep *ep = container_of(_ep, struct lpc32xx_ep, ep); + struct lpc32xx_udc *udc = ep->udc; + unsigned long flags; + + if ((ep->hwep_num_base == 0) || (ep->hwep_num == 0)) + return -EINVAL; + spin_lock_irqsave(&udc->lock, flags); + + nuke(ep, -ESHUTDOWN); + + /* Clear all DMA statuses for this EP */ + udc_ep_dma_disable(udc, ep->hwep_num); + writel(1 << ep->hwep_num, USBD_EOTINTCLR(udc->udp_baseaddr)); + writel(1 << ep->hwep_num, USBD_NDDRTINTCLR(udc->udp_baseaddr)); + writel(1 << ep->hwep_num, USBD_SYSERRTINTCLR(udc->udp_baseaddr)); + writel(1 << ep->hwep_num, USBD_DMARCLR(udc->udp_baseaddr)); + + /* Remove the DD pointer in the UDCA */ + udc->udca_v_base[ep->hwep_num] = 0; + + /* Disable and reset endpoint and interrupt */ + uda_clear_hwepint(udc, ep->hwep_num); + udc_unrealize_hwep(udc, ep->hwep_num); + + ep->hwep_num = 0; + + spin_unlock_irqrestore(&udc->lock, flags); + + atomic_dec(&udc->enabled_ep_cnt); + wake_up(&udc->ep_disable_wait_queue); + + return 0; +} + +/* Must be called without lock */ +static int lpc32xx_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct lpc32xx_ep *ep = container_of(_ep, struct lpc32xx_ep, ep); + struct lpc32xx_udc *udc = ep->udc; + u16 maxpacket; + u32 tmp; + unsigned long flags; + + /* Verify EP data */ + if ((!_ep) || (!ep) || (!desc) || + (desc->bDescriptorType != USB_DT_ENDPOINT)) { + dev_dbg(udc->dev, "bad ep or descriptor\n"); + return -EINVAL; + } + maxpacket = usb_endpoint_maxp(desc); + if ((maxpacket == 0) || (maxpacket > ep->maxpacket)) { + dev_dbg(udc->dev, "bad ep descriptor's packet size\n"); + return -EINVAL; + } + + /* Don't touch EP0 */ + if (ep->hwep_num_base == 0) { + dev_dbg(udc->dev, "Can't re-enable EP0!!!\n"); + return -EINVAL; + } + + /* Is driver ready? */ + if ((!udc->driver) || (udc->gadget.speed == USB_SPEED_UNKNOWN)) { + dev_dbg(udc->dev, "bogus device state\n"); + return -ESHUTDOWN; + } + + tmp = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + switch (tmp) { + case USB_ENDPOINT_XFER_CONTROL: + return -EINVAL; + + case USB_ENDPOINT_XFER_INT: + if (maxpacket > ep->maxpacket) { + dev_dbg(udc->dev, + "Bad INT endpoint maxpacket %d\n", maxpacket); + return -EINVAL; + } + break; + + case USB_ENDPOINT_XFER_BULK: + switch (maxpacket) { + case 8: + case 16: + case 32: + case 64: + break; + + default: + dev_dbg(udc->dev, + "Bad BULK endpoint maxpacket %d\n", maxpacket); + return -EINVAL; + } + break; + + case USB_ENDPOINT_XFER_ISOC: + break; + } + spin_lock_irqsave(&udc->lock, flags); + + /* Initialize endpoint to match the selected descriptor */ + ep->is_in = (desc->bEndpointAddress & USB_DIR_IN) != 0; + ep->ep.maxpacket = maxpacket; + + /* Map hardware endpoint from base and direction */ + if (ep->is_in) + /* IN endpoints are offset 1 from the OUT endpoint */ + ep->hwep_num = ep->hwep_num_base + EP_IN; + else + ep->hwep_num = ep->hwep_num_base; + + ep_dbg(ep, "EP enabled: %s, HW:%d, MP:%d IN:%d\n", ep->ep.name, + ep->hwep_num, maxpacket, (ep->is_in == 1)); + + /* Realize the endpoint, interrupt is enabled later when + * buffers are queued, IN EPs will NAK until buffers are ready */ + udc_realize_hwep(udc, ep->hwep_num, ep->ep.maxpacket); + udc_clr_buffer_hwep(udc, ep->hwep_num); + uda_disable_hwepint(udc, ep->hwep_num); + udc_clrstall_hwep(udc, ep->hwep_num); + + /* Clear all DMA statuses for this EP */ + udc_ep_dma_disable(udc, ep->hwep_num); + writel(1 << ep->hwep_num, USBD_EOTINTCLR(udc->udp_baseaddr)); + writel(1 << ep->hwep_num, USBD_NDDRTINTCLR(udc->udp_baseaddr)); + writel(1 << ep->hwep_num, USBD_SYSERRTINTCLR(udc->udp_baseaddr)); + writel(1 << ep->hwep_num, USBD_DMARCLR(udc->udp_baseaddr)); + + spin_unlock_irqrestore(&udc->lock, flags); + + atomic_inc(&udc->enabled_ep_cnt); + return 0; +} + +/* + * Allocate a USB request list + * Can be called with or without lock + */ +static struct usb_request *lpc32xx_ep_alloc_request(struct usb_ep *_ep, + gfp_t gfp_flags) +{ + struct lpc32xx_request *req; + + req = kzalloc(sizeof(struct lpc32xx_request), gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + return &req->req; +} + +/* + * De-allocate a USB request list + * Can be called with or without lock + */ +static void lpc32xx_ep_free_request(struct usb_ep *_ep, + struct usb_request *_req) +{ + struct lpc32xx_request *req; + + req = container_of(_req, struct lpc32xx_request, req); + BUG_ON(!list_empty(&req->queue)); + kfree(req); +} + +/* Must be called without lock */ +static int lpc32xx_ep_queue(struct usb_ep *_ep, + struct usb_request *_req, gfp_t gfp_flags) +{ + struct lpc32xx_request *req; + struct lpc32xx_ep *ep; + struct lpc32xx_udc *udc; + unsigned long flags; + int status = 0; + + req = container_of(_req, struct lpc32xx_request, req); + ep = container_of(_ep, struct lpc32xx_ep, ep); + + if (!_req || !_req->complete || !_req->buf || + !list_empty(&req->queue)) + return -EINVAL; + + udc = ep->udc; + + if (!_ep) { + dev_dbg(udc->dev, "invalid ep\n"); + return -EINVAL; + } + + + if ((!udc) || (!udc->driver) || + (udc->gadget.speed == USB_SPEED_UNKNOWN)) { + dev_dbg(udc->dev, "invalid device\n"); + return -EINVAL; + } + + if (ep->lep) { + struct lpc32xx_usbd_dd_gad *dd; + + status = usb_gadget_map_request(&udc->gadget, _req, ep->is_in); + if (status) + return status; + + /* For the request, build a list of DDs */ + dd = udc_dd_alloc(udc); + if (!dd) { + /* Error allocating DD */ + return -ENOMEM; + } + req->dd_desc_ptr = dd; + + /* Setup the DMA descriptor */ + dd->dd_next_phy = dd->dd_next_v = 0; + dd->dd_buffer_addr = req->req.dma; + dd->dd_status = 0; + + /* Special handling for ISO EPs */ + if (ep->eptype == EP_ISO_TYPE) { + dd->dd_setup = DD_SETUP_ISO_EP | + DD_SETUP_PACKETLEN(0) | + DD_SETUP_DMALENBYTES(1); + dd->dd_iso_ps_mem_addr = dd->this_dma + 24; + if (ep->is_in) + dd->iso_status[0] = req->req.length; + else + dd->iso_status[0] = 0; + } else + dd->dd_setup = DD_SETUP_PACKETLEN(ep->ep.maxpacket) | + DD_SETUP_DMALENBYTES(req->req.length); + } + + ep_dbg(ep, "%s queue req %p len %d buf %p (in=%d) z=%d\n", _ep->name, + _req, _req->length, _req->buf, ep->is_in, _req->zero); + + spin_lock_irqsave(&udc->lock, flags); + + _req->status = -EINPROGRESS; + _req->actual = 0; + req->send_zlp = _req->zero; + + /* Kickstart empty queues */ + if (list_empty(&ep->queue)) { + list_add_tail(&req->queue, &ep->queue); + + if (ep->hwep_num_base == 0) { + /* Handle expected data direction */ + if (ep->is_in) { + /* IN packet to host */ + udc->ep0state = DATA_IN; + status = udc_ep0_in_req(udc); + } else { + /* OUT packet from host */ + udc->ep0state = DATA_OUT; + status = udc_ep0_out_req(udc); + } + } else if (ep->is_in) { + /* IN packet to host and kick off transfer */ + if (!ep->req_pending) + udc_ep_in_req_dma(udc, ep); + } else + /* OUT packet from host and kick off list */ + if (!ep->req_pending) + udc_ep_out_req_dma(udc, ep); + } else + list_add_tail(&req->queue, &ep->queue); + + spin_unlock_irqrestore(&udc->lock, flags); + + return (status < 0) ? status : 0; +} + +/* Must be called without lock */ +static int lpc32xx_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct lpc32xx_ep *ep; + struct lpc32xx_request *req; + unsigned long flags; + + ep = container_of(_ep, struct lpc32xx_ep, ep); + if (!_ep || ep->hwep_num_base == 0) + return -EINVAL; + + spin_lock_irqsave(&ep->udc->lock, flags); + + /* make sure it's actually queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + if (&req->req != _req) { + spin_unlock_irqrestore(&ep->udc->lock, flags); + return -EINVAL; + } + + done(ep, req, -ECONNRESET); + + spin_unlock_irqrestore(&ep->udc->lock, flags); + + return 0; +} + +/* Must be called without lock */ +static int lpc32xx_ep_set_halt(struct usb_ep *_ep, int value) +{ + struct lpc32xx_ep *ep = container_of(_ep, struct lpc32xx_ep, ep); + struct lpc32xx_udc *udc = ep->udc; + unsigned long flags; + + if ((!ep) || (ep->hwep_num <= 1)) + return -EINVAL; + + /* Don't halt an IN EP */ + if (ep->is_in) + return -EAGAIN; + + spin_lock_irqsave(&udc->lock, flags); + + if (value == 1) { + /* stall */ + udc_protocol_cmd_data_w(udc, CMD_SET_EP_STAT(ep->hwep_num), + DAT_WR_BYTE(EP_STAT_ST)); + } else { + /* End stall */ + ep->wedge = 0; + udc_protocol_cmd_data_w(udc, CMD_SET_EP_STAT(ep->hwep_num), + DAT_WR_BYTE(0)); + } + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/* set the halt feature and ignores clear requests */ +static int lpc32xx_ep_set_wedge(struct usb_ep *_ep) +{ + struct lpc32xx_ep *ep = container_of(_ep, struct lpc32xx_ep, ep); + + if (!_ep || !ep->udc) + return -EINVAL; + + ep->wedge = 1; + + return usb_ep_set_halt(_ep); +} + +static const struct usb_ep_ops lpc32xx_ep_ops = { + .enable = lpc32xx_ep_enable, + .disable = lpc32xx_ep_disable, + .alloc_request = lpc32xx_ep_alloc_request, + .free_request = lpc32xx_ep_free_request, + .queue = lpc32xx_ep_queue, + .dequeue = lpc32xx_ep_dequeue, + .set_halt = lpc32xx_ep_set_halt, + .set_wedge = lpc32xx_ep_set_wedge, +}; + +/* Send a ZLP on a non-0 IN EP */ +void udc_send_in_zlp(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +{ + /* Clear EP status */ + udc_clearep_getsts(udc, ep->hwep_num); + + /* Send ZLP via FIFO mechanism */ + udc_write_hwep(udc, ep->hwep_num, NULL, 0); +} + +/* + * Handle EP completion for ZLP + * This function will only be called when a delayed ZLP needs to be sent out + * after a DMA transfer has filled both buffers. + */ +void udc_handle_eps(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +{ + u32 epstatus; + struct lpc32xx_request *req; + + if (ep->hwep_num <= 0) + return; + + uda_clear_hwepint(udc, ep->hwep_num); + + /* If this interrupt isn't enabled, return now */ + if (!(udc->enabled_hwepints & (1 << ep->hwep_num))) + return; + + /* Get endpoint status */ + epstatus = udc_clearep_getsts(udc, ep->hwep_num); + + /* + * This should never happen, but protect against writing to the + * buffer when full. + */ + if (epstatus & EP_SEL_F) + return; + + if (ep->is_in) { + udc_send_in_zlp(udc, ep); + uda_disable_hwepint(udc, ep->hwep_num); + } else + return; + + /* If there isn't a request waiting, something went wrong */ + req = list_entry(ep->queue.next, struct lpc32xx_request, queue); + if (req) { + done(ep, req, 0); + + /* Start another request if ready */ + if (!list_empty(&ep->queue)) { + if (ep->is_in) + udc_ep_in_req_dma(udc, ep); + else + udc_ep_out_req_dma(udc, ep); + } else + ep->req_pending = 0; + } +} + + +/* DMA end of transfer completion */ +static void udc_handle_dma_ep(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +{ + u32 status, epstatus; + struct lpc32xx_request *req; + struct lpc32xx_usbd_dd_gad *dd; + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + ep->totalints++; +#endif + + req = list_entry(ep->queue.next, struct lpc32xx_request, queue); + if (!req) { + ep_err(ep, "DMA interrupt on no req!\n"); + return; + } + dd = req->dd_desc_ptr; + + /* DMA descriptor should always be retired for this call */ + if (!(dd->dd_status & DD_STATUS_DD_RETIRED)) + ep_warn(ep, "DMA descriptor did not retire\n"); + + /* Disable DMA */ + udc_ep_dma_disable(udc, ep->hwep_num); + writel((1 << ep->hwep_num), USBD_EOTINTCLR(udc->udp_baseaddr)); + writel((1 << ep->hwep_num), USBD_NDDRTINTCLR(udc->udp_baseaddr)); + + /* System error? */ + if (readl(USBD_SYSERRTINTST(udc->udp_baseaddr)) & + (1 << ep->hwep_num)) { + writel((1 << ep->hwep_num), + USBD_SYSERRTINTCLR(udc->udp_baseaddr)); + ep_err(ep, "AHB critical error!\n"); + ep->req_pending = 0; + + /* The error could have occurred on a packet of a multipacket + * transfer, so recovering the transfer is not possible. Close + * the request with an error */ + done(ep, req, -ECONNABORTED); + return; + } + + /* Handle the current DD's status */ + status = dd->dd_status; + switch (status & DD_STATUS_STS_MASK) { + case DD_STATUS_STS_NS: + /* DD not serviced? This shouldn't happen! */ + ep->req_pending = 0; + ep_err(ep, "DMA critical EP error: DD not serviced (0x%x)!\n", + status); + + done(ep, req, -ECONNABORTED); + return; + + case DD_STATUS_STS_BS: + /* Interrupt only fires on EOT - This shouldn't happen! */ + ep->req_pending = 0; + ep_err(ep, "DMA critical EP error: EOT prior to service completion (0x%x)!\n", + status); + done(ep, req, -ECONNABORTED); + return; + + case DD_STATUS_STS_NC: + case DD_STATUS_STS_DUR: + /* Really just a short packet, not an underrun */ + /* This is a good status and what we expect */ + break; + + default: + /* Data overrun, system error, or unknown */ + ep->req_pending = 0; + ep_err(ep, "DMA critical EP error: System error (0x%x)!\n", + status); + done(ep, req, -ECONNABORTED); + return; + } + + /* ISO endpoints are handled differently */ + if (ep->eptype == EP_ISO_TYPE) { + if (ep->is_in) + req->req.actual = req->req.length; + else + req->req.actual = dd->iso_status[0] & 0xFFFF; + } else + req->req.actual += DD_STATUS_CURDMACNT(status); + + /* Send a ZLP if necessary. This will be done for non-int + * packets which have a size that is a divisor of MAXP */ + if (req->send_zlp) { + /* + * If at least 1 buffer is available, send the ZLP now. + * Otherwise, the ZLP send needs to be deferred until a + * buffer is available. + */ + if (udc_clearep_getsts(udc, ep->hwep_num) & EP_SEL_F) { + udc_clearep_getsts(udc, ep->hwep_num); + uda_enable_hwepint(udc, ep->hwep_num); + epstatus = udc_clearep_getsts(udc, ep->hwep_num); + + /* Let the EP interrupt handle the ZLP */ + return; + } else + udc_send_in_zlp(udc, ep); + } + + /* Transfer request is complete */ + done(ep, req, 0); + + /* Start another request if ready */ + udc_clearep_getsts(udc, ep->hwep_num); + if (!list_empty((&ep->queue))) { + if (ep->is_in) + udc_ep_in_req_dma(udc, ep); + else + udc_ep_out_req_dma(udc, ep); + } else + ep->req_pending = 0; + +} + +/* + * + * Endpoint 0 functions + * + */ +static void udc_handle_dev(struct lpc32xx_udc *udc) +{ + u32 tmp; + + udc_protocol_cmd_w(udc, CMD_GET_DEV_STAT); + tmp = udc_protocol_cmd_r(udc, DAT_GET_DEV_STAT); + + if (tmp & DEV_RST) + uda_usb_reset(udc); + else if (tmp & DEV_CON_CH) + uda_power_event(udc, (tmp & DEV_CON)); + else if (tmp & DEV_SUS_CH) { + if (tmp & DEV_SUS) { + if (udc->vbus == 0) + stop_activity(udc); + else if ((udc->gadget.speed != USB_SPEED_UNKNOWN) && + udc->driver) { + /* Power down transceiver */ + udc->poweron = 0; + schedule_work(&udc->pullup_job); + uda_resm_susp_event(udc, 1); + } + } else if ((udc->gadget.speed != USB_SPEED_UNKNOWN) && + udc->driver && udc->vbus) { + uda_resm_susp_event(udc, 0); + /* Power up transceiver */ + udc->poweron = 1; + schedule_work(&udc->pullup_job); + } + } +} + +static int udc_get_status(struct lpc32xx_udc *udc, u16 reqtype, u16 wIndex) +{ + struct lpc32xx_ep *ep; + u32 ep0buff = 0, tmp; + + switch (reqtype & USB_RECIP_MASK) { + case USB_RECIP_INTERFACE: + break; /* Not supported */ + + case USB_RECIP_DEVICE: + ep0buff = (udc->selfpowered << USB_DEVICE_SELF_POWERED); + if (udc->dev_status & (1 << USB_DEVICE_REMOTE_WAKEUP)) + ep0buff |= (1 << USB_DEVICE_REMOTE_WAKEUP); + break; + + case USB_RECIP_ENDPOINT: + tmp = wIndex & USB_ENDPOINT_NUMBER_MASK; + ep = &udc->ep[tmp]; + if ((tmp == 0) || (tmp >= NUM_ENDPOINTS)) + return -EOPNOTSUPP; + + if (wIndex & USB_DIR_IN) { + if (!ep->is_in) + return -EOPNOTSUPP; /* Something's wrong */ + } else if (ep->is_in) + return -EOPNOTSUPP; /* Not an IN endpoint */ + + /* Get status of the endpoint */ + udc_protocol_cmd_w(udc, CMD_SEL_EP(ep->hwep_num)); + tmp = udc_protocol_cmd_r(udc, DAT_SEL_EP(ep->hwep_num)); + + if (tmp & EP_SEL_ST) + ep0buff = (1 << USB_ENDPOINT_HALT); + else + ep0buff = 0; + break; + + default: + break; + } + + /* Return data */ + udc_write_hwep(udc, EP_IN, &ep0buff, 2); + + return 0; +} + +static void udc_handle_ep0_setup(struct lpc32xx_udc *udc) +{ + struct lpc32xx_ep *ep, *ep0 = &udc->ep[0]; + struct usb_ctrlrequest ctrlpkt; + int i, bytes; + u16 wIndex, wValue, wLength, reqtype, req, tmp; + + /* Nuke previous transfers */ + nuke(ep0, -EPROTO); + + /* Get setup packet */ + bytes = udc_read_hwep(udc, EP_OUT, (u32 *) &ctrlpkt, 8); + if (bytes != 8) { + ep_warn(ep0, "Incorrectly sized setup packet (s/b 8, is %d)!\n", + bytes); + return; + } + + /* Native endianness */ + wIndex = le16_to_cpu(ctrlpkt.wIndex); + wValue = le16_to_cpu(ctrlpkt.wValue); + wLength = le16_to_cpu(ctrlpkt.wLength); + reqtype = le16_to_cpu(ctrlpkt.bRequestType); + + /* Set direction of EP0 */ + if (likely(reqtype & USB_DIR_IN)) + ep0->is_in = 1; + else + ep0->is_in = 0; + + /* Handle SETUP packet */ + req = le16_to_cpu(ctrlpkt.bRequest); + switch (req) { + case USB_REQ_CLEAR_FEATURE: + case USB_REQ_SET_FEATURE: + switch (reqtype) { + case (USB_TYPE_STANDARD | USB_RECIP_DEVICE): + if (wValue != USB_DEVICE_REMOTE_WAKEUP) + goto stall; /* Nothing else handled */ + + /* Tell board about event */ + if (req == USB_REQ_CLEAR_FEATURE) + udc->dev_status &= + ~(1 << USB_DEVICE_REMOTE_WAKEUP); + else + udc->dev_status |= + (1 << USB_DEVICE_REMOTE_WAKEUP); + uda_remwkp_cgh(udc); + goto zlp_send; + + case (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT): + tmp = wIndex & USB_ENDPOINT_NUMBER_MASK; + if ((wValue != USB_ENDPOINT_HALT) || + (tmp >= NUM_ENDPOINTS)) + break; + + /* Find hardware endpoint from logical endpoint */ + ep = &udc->ep[tmp]; + tmp = ep->hwep_num; + if (tmp == 0) + break; + + if (req == USB_REQ_SET_FEATURE) + udc_stall_hwep(udc, tmp); + else if (!ep->wedge) + udc_clrstall_hwep(udc, tmp); + + goto zlp_send; + + default: + break; + } + + + case USB_REQ_SET_ADDRESS: + if (reqtype == (USB_TYPE_STANDARD | USB_RECIP_DEVICE)) { + udc_set_address(udc, wValue); + goto zlp_send; + } + break; + + case USB_REQ_GET_STATUS: + udc_get_status(udc, reqtype, wIndex); + return; + + default: + break; /* Let GadgetFS handle the descriptor instead */ + } + + if (likely(udc->driver)) { + /* device-2-host (IN) or no data setup command, process + * immediately */ + spin_unlock(&udc->lock); + i = udc->driver->setup(&udc->gadget, &ctrlpkt); + + spin_lock(&udc->lock); + if (req == USB_REQ_SET_CONFIGURATION) { + /* Configuration is set after endpoints are realized */ + if (wValue) { + /* Set configuration */ + udc_set_device_configured(udc); + + udc_protocol_cmd_data_w(udc, CMD_SET_MODE, + DAT_WR_BYTE(AP_CLK | + INAK_BI | INAK_II)); + } else { + /* Clear configuration */ + udc_set_device_unconfigured(udc); + + /* Disable NAK interrupts */ + udc_protocol_cmd_data_w(udc, CMD_SET_MODE, + DAT_WR_BYTE(AP_CLK)); + } + } + + if (i < 0) { + /* setup processing failed, force stall */ + dev_dbg(udc->dev, + "req %02x.%02x protocol STALL; stat %d\n", + reqtype, req, i); + udc->ep0state = WAIT_FOR_SETUP; + goto stall; + } + } + + if (!ep0->is_in) + udc_ep0_send_zlp(udc); /* ZLP IN packet on data phase */ + + return; + +stall: + udc_stall_hwep(udc, EP_IN); + return; + +zlp_send: + udc_ep0_send_zlp(udc); + return; +} + +/* IN endpoint 0 transfer */ +static void udc_handle_ep0_in(struct lpc32xx_udc *udc) +{ + struct lpc32xx_ep *ep0 = &udc->ep[0]; + u32 epstatus; + + /* Clear EP interrupt */ + epstatus = udc_clearep_getsts(udc, EP_IN); + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + ep0->totalints++; +#endif + + /* Stalled? Clear stall and reset buffers */ + if (epstatus & EP_SEL_ST) { + udc_clrstall_hwep(udc, EP_IN); + nuke(ep0, -ECONNABORTED); + udc->ep0state = WAIT_FOR_SETUP; + return; + } + + /* Is a buffer available? */ + if (!(epstatus & EP_SEL_F)) { + /* Handle based on current state */ + if (udc->ep0state == DATA_IN) + udc_ep0_in_req(udc); + else { + /* Unknown state for EP0 oe end of DATA IN phase */ + nuke(ep0, -ECONNABORTED); + udc->ep0state = WAIT_FOR_SETUP; + } + } +} + +/* OUT endpoint 0 transfer */ +static void udc_handle_ep0_out(struct lpc32xx_udc *udc) +{ + struct lpc32xx_ep *ep0 = &udc->ep[0]; + u32 epstatus; + + /* Clear EP interrupt */ + epstatus = udc_clearep_getsts(udc, EP_OUT); + + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + ep0->totalints++; +#endif + + /* Stalled? */ + if (epstatus & EP_SEL_ST) { + udc_clrstall_hwep(udc, EP_OUT); + nuke(ep0, -ECONNABORTED); + udc->ep0state = WAIT_FOR_SETUP; + return; + } + + /* A NAK may occur if a packet couldn't be received yet */ + if (epstatus & EP_SEL_EPN) + return; + /* Setup packet incoming? */ + if (epstatus & EP_SEL_STP) { + nuke(ep0, 0); + udc->ep0state = WAIT_FOR_SETUP; + } + + /* Data available? */ + if (epstatus & EP_SEL_F) + /* Handle based on current state */ + switch (udc->ep0state) { + case WAIT_FOR_SETUP: + udc_handle_ep0_setup(udc); + break; + + case DATA_OUT: + udc_ep0_out_req(udc); + break; + + default: + /* Unknown state for EP0 */ + nuke(ep0, -ECONNABORTED); + udc->ep0state = WAIT_FOR_SETUP; + } +} + +/* Must be called without lock */ +static int lpc32xx_get_frame(struct usb_gadget *gadget) +{ + int frame; + unsigned long flags; + struct lpc32xx_udc *udc = to_udc(gadget); + + if (!udc->clocked) + return -EINVAL; + + spin_lock_irqsave(&udc->lock, flags); + + frame = (int) udc_get_current_frame(udc); + + spin_unlock_irqrestore(&udc->lock, flags); + + return frame; +} + +static int lpc32xx_wakeup(struct usb_gadget *gadget) +{ + return -ENOTSUPP; +} + +static int lpc32xx_set_selfpowered(struct usb_gadget *gadget, int is_on) +{ + struct lpc32xx_udc *udc = to_udc(gadget); + + /* Always self-powered */ + udc->selfpowered = (is_on != 0); + + return 0; +} + +/* + * vbus is here! turn everything on that's ready + * Must be called without lock + */ +static int lpc32xx_vbus_session(struct usb_gadget *gadget, int is_active) +{ + unsigned long flags; + struct lpc32xx_udc *udc = to_udc(gadget); + + spin_lock_irqsave(&udc->lock, flags); + + /* Doesn't need lock */ + if (udc->driver) { + udc_clk_set(udc, 1); + udc_enable(udc); + pullup(udc, is_active); + } else { + stop_activity(udc); + pullup(udc, 0); + + spin_unlock_irqrestore(&udc->lock, flags); + /* + * Wait for all the endpoints to disable, + * before disabling clocks. Don't wait if + * endpoints are not enabled. + */ + if (atomic_read(&udc->enabled_ep_cnt)) + wait_event_interruptible(udc->ep_disable_wait_queue, + (atomic_read(&udc->enabled_ep_cnt) == 0)); + + spin_lock_irqsave(&udc->lock, flags); + + udc_clk_set(udc, 0); + } + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/* Can be called with or without lock */ +static int lpc32xx_pullup(struct usb_gadget *gadget, int is_on) +{ + struct lpc32xx_udc *udc = to_udc(gadget); + + /* Doesn't need lock */ + pullup(udc, is_on); + + return 0; +} + +static int lpc32xx_start(struct usb_gadget *, struct usb_gadget_driver *); +static int lpc32xx_stop(struct usb_gadget *, struct usb_gadget_driver *); + +static const struct usb_gadget_ops lpc32xx_udc_ops = { + .get_frame = lpc32xx_get_frame, + .wakeup = lpc32xx_wakeup, + .set_selfpowered = lpc32xx_set_selfpowered, + .vbus_session = lpc32xx_vbus_session, + .pullup = lpc32xx_pullup, + .udc_start = lpc32xx_start, + .udc_stop = lpc32xx_stop, +}; + +static void nop_release(struct device *dev) +{ + /* nothing to free */ +} + +static const struct lpc32xx_udc controller_template = { + .gadget = { + .ops = &lpc32xx_udc_ops, + .name = driver_name, + .dev = { + .init_name = "gadget", + .release = nop_release, + } + }, + .ep[0] = { + .ep = { + .name = "ep0", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 0, + .hwep_num = 0, /* Can be 0 or 1, has special handling */ + .lep = 0, + .eptype = EP_CTL_TYPE, + }, + .ep[1] = { + .ep = { + .name = "ep1-int", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 2, + .hwep_num = 0, /* 2 or 3, will be set later */ + .lep = 1, + .eptype = EP_INT_TYPE, + }, + .ep[2] = { + .ep = { + .name = "ep2-bulk", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 4, + .hwep_num = 0, /* 4 or 5, will be set later */ + .lep = 2, + .eptype = EP_BLK_TYPE, + }, + .ep[3] = { + .ep = { + .name = "ep3-iso", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 1023, + .hwep_num_base = 6, + .hwep_num = 0, /* 6 or 7, will be set later */ + .lep = 3, + .eptype = EP_ISO_TYPE, + }, + .ep[4] = { + .ep = { + .name = "ep4-int", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 8, + .hwep_num = 0, /* 8 or 9, will be set later */ + .lep = 4, + .eptype = EP_INT_TYPE, + }, + .ep[5] = { + .ep = { + .name = "ep5-bulk", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 10, + .hwep_num = 0, /* 10 or 11, will be set later */ + .lep = 5, + .eptype = EP_BLK_TYPE, + }, + .ep[6] = { + .ep = { + .name = "ep6-iso", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 1023, + .hwep_num_base = 12, + .hwep_num = 0, /* 12 or 13, will be set later */ + .lep = 6, + .eptype = EP_ISO_TYPE, + }, + .ep[7] = { + .ep = { + .name = "ep7-int", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 14, + .hwep_num = 0, + .lep = 7, + .eptype = EP_INT_TYPE, + }, + .ep[8] = { + .ep = { + .name = "ep8-bulk", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 16, + .hwep_num = 0, + .lep = 8, + .eptype = EP_BLK_TYPE, + }, + .ep[9] = { + .ep = { + .name = "ep9-iso", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 1023, + .hwep_num_base = 18, + .hwep_num = 0, + .lep = 9, + .eptype = EP_ISO_TYPE, + }, + .ep[10] = { + .ep = { + .name = "ep10-int", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 20, + .hwep_num = 0, + .lep = 10, + .eptype = EP_INT_TYPE, + }, + .ep[11] = { + .ep = { + .name = "ep11-bulk", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 22, + .hwep_num = 0, + .lep = 11, + .eptype = EP_BLK_TYPE, + }, + .ep[12] = { + .ep = { + .name = "ep12-iso", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 1023, + .hwep_num_base = 24, + .hwep_num = 0, + .lep = 12, + .eptype = EP_ISO_TYPE, + }, + .ep[13] = { + .ep = { + .name = "ep13-int", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 26, + .hwep_num = 0, + .lep = 13, + .eptype = EP_INT_TYPE, + }, + .ep[14] = { + .ep = { + .name = "ep14-bulk", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 64, + .hwep_num_base = 28, + .hwep_num = 0, + .lep = 14, + .eptype = EP_BLK_TYPE, + }, + .ep[15] = { + .ep = { + .name = "ep15-bulk", + .ops = &lpc32xx_ep_ops, + }, + .maxpacket = 1023, + .hwep_num_base = 30, + .hwep_num = 0, + .lep = 15, + .eptype = EP_BLK_TYPE, + }, +}; + +/* ISO and status interrupts */ +static irqreturn_t lpc32xx_usb_lp_irq(int irq, void *_udc) +{ + u32 tmp, devstat; + struct lpc32xx_udc *udc = _udc; + + spin_lock(&udc->lock); + + /* Read the device status register */ + devstat = readl(USBD_DEVINTST(udc->udp_baseaddr)); + + devstat &= ~USBD_EP_FAST; + writel(devstat, USBD_DEVINTCLR(udc->udp_baseaddr)); + devstat = devstat & udc->enabled_devints; + + /* Device specific handling needed? */ + if (devstat & USBD_DEV_STAT) + udc_handle_dev(udc); + + /* Start of frame? (devstat & FRAME_INT): + * The frame interrupt isn't really needed for ISO support, + * as the driver will queue the necessary packets */ + + /* Error? */ + if (devstat & ERR_INT) { + /* All types of errors, from cable removal during transfer to + * misc protocol and bit errors. These are mostly for just info, + * as the USB hardware will work around these. If these errors + * happen alot, something is wrong. */ + udc_protocol_cmd_w(udc, CMD_RD_ERR_STAT); + tmp = udc_protocol_cmd_r(udc, DAT_RD_ERR_STAT); + dev_dbg(udc->dev, "Device error (0x%x)!\n", tmp); + } + + spin_unlock(&udc->lock); + + return IRQ_HANDLED; +} + +/* EP interrupts */ +static irqreturn_t lpc32xx_usb_hp_irq(int irq, void *_udc) +{ + u32 tmp; + struct lpc32xx_udc *udc = _udc; + + spin_lock(&udc->lock); + + /* Read the device status register */ + writel(USBD_EP_FAST, USBD_DEVINTCLR(udc->udp_baseaddr)); + + /* Endpoints */ + tmp = readl(USBD_EPINTST(udc->udp_baseaddr)); + + /* Special handling for EP0 */ + if (tmp & (EP_MASK_SEL(0, EP_OUT) | EP_MASK_SEL(0, EP_IN))) { + /* Handle EP0 IN */ + if (tmp & (EP_MASK_SEL(0, EP_IN))) + udc_handle_ep0_in(udc); + + /* Handle EP0 OUT */ + if (tmp & (EP_MASK_SEL(0, EP_OUT))) + udc_handle_ep0_out(udc); + } + + /* All other EPs */ + if (tmp & ~(EP_MASK_SEL(0, EP_OUT) | EP_MASK_SEL(0, EP_IN))) { + int i; + + /* Handle other EP interrupts */ + for (i = 1; i < NUM_ENDPOINTS; i++) { + if (tmp & (1 << udc->ep[i].hwep_num)) + udc_handle_eps(udc, &udc->ep[i]); + } + } + + spin_unlock(&udc->lock); + + return IRQ_HANDLED; +} + +static irqreturn_t lpc32xx_usb_devdma_irq(int irq, void *_udc) +{ + struct lpc32xx_udc *udc = _udc; + + int i; + u32 tmp; + + spin_lock(&udc->lock); + + /* Handle EP DMA EOT interrupts */ + tmp = readl(USBD_EOTINTST(udc->udp_baseaddr)) | + (readl(USBD_EPDMAST(udc->udp_baseaddr)) & + readl(USBD_NDDRTINTST(udc->udp_baseaddr))) | + readl(USBD_SYSERRTINTST(udc->udp_baseaddr)); + for (i = 1; i < NUM_ENDPOINTS; i++) { + if (tmp & (1 << udc->ep[i].hwep_num)) + udc_handle_dma_ep(udc, &udc->ep[i]); + } + + spin_unlock(&udc->lock); + + return IRQ_HANDLED; +} + +/* + * + * VBUS detection, pullup handler, and Gadget cable state notification + * + */ +static void vbus_work(struct work_struct *work) +{ + u8 value; + struct lpc32xx_udc *udc = container_of(work, struct lpc32xx_udc, + vbus_job); + + if (udc->enabled != 0) { + /* Discharge VBUS real quick */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1, OTG1_VBUS_DISCHRG); + + /* Give VBUS some time (100mS) to discharge */ + msleep(100); + + /* Disable VBUS discharge resistor */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR, + OTG1_VBUS_DISCHRG); + + /* Clear interrupt */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_LATCH | + ISP1301_I2C_REG_CLEAR_ADDR, ~0); + + /* Get the VBUS status from the transceiver */ + value = i2c_smbus_read_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_SOURCE); + + /* VBUS on or off? */ + if (value & INT_SESS_VLD) + udc->vbus = 1; + else + udc->vbus = 0; + + /* VBUS changed? */ + if (udc->last_vbus != udc->vbus) { + udc->last_vbus = udc->vbus; + lpc32xx_vbus_session(&udc->gadget, udc->vbus); + } + } + + /* Re-enable after completion */ + enable_irq(udc->udp_irq[IRQ_USB_ATX]); +} + +static irqreturn_t lpc32xx_usb_vbus_irq(int irq, void *_udc) +{ + struct lpc32xx_udc *udc = _udc; + + /* Defer handling of VBUS IRQ to work queue */ + disable_irq_nosync(udc->udp_irq[IRQ_USB_ATX]); + schedule_work(&udc->vbus_job); + + return IRQ_HANDLED; +} + +static int lpc32xx_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct lpc32xx_udc *udc = to_udc(gadget); + int i; + + if (!driver || driver->max_speed < USB_SPEED_FULL || !driver->setup) { + dev_err(udc->dev, "bad parameter.\n"); + return -EINVAL; + } + + if (udc->driver) { + dev_err(udc->dev, "UDC already has a gadget driver\n"); + return -EBUSY; + } + + udc->driver = driver; + udc->gadget.dev.of_node = udc->dev->of_node; + udc->enabled = 1; + udc->selfpowered = 1; + udc->vbus = 0; + + /* Force VBUS process once to check for cable insertion */ + udc->last_vbus = udc->vbus = 0; + schedule_work(&udc->vbus_job); + + /* Do not re-enable ATX IRQ (3) */ + for (i = IRQ_USB_LP; i < IRQ_USB_ATX; i++) + enable_irq(udc->udp_irq[i]); + + return 0; +} + +static int lpc32xx_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + int i; + struct lpc32xx_udc *udc = to_udc(gadget); + + if (!driver || driver != udc->driver) + return -EINVAL; + + for (i = IRQ_USB_LP; i <= IRQ_USB_ATX; i++) + disable_irq(udc->udp_irq[i]); + + if (udc->clocked) { + spin_lock(&udc->lock); + stop_activity(udc); + spin_unlock(&udc->lock); + + /* + * Wait for all the endpoints to disable, + * before disabling clocks. Don't wait if + * endpoints are not enabled. + */ + if (atomic_read(&udc->enabled_ep_cnt)) + wait_event_interruptible(udc->ep_disable_wait_queue, + (atomic_read(&udc->enabled_ep_cnt) == 0)); + + spin_lock(&udc->lock); + udc_clk_set(udc, 0); + spin_unlock(&udc->lock); + } + + udc->enabled = 0; + udc->driver = NULL; + + return 0; +} + +static void lpc32xx_udc_shutdown(struct platform_device *dev) +{ + /* Force disconnect on reboot */ + struct lpc32xx_udc *udc = platform_get_drvdata(dev); + + pullup(udc, 0); +} + +/* + * Callbacks to be overridden by options passed via OF (TODO) + */ + +static void lpc32xx_usbd_conn_chg(int conn) +{ + /* Do nothing, it might be nice to enable an LED + * based on conn state being !0 */ +} + +static void lpc32xx_usbd_susp_chg(int susp) +{ + /* Device suspend if susp != 0 */ +} + +static void lpc32xx_rmwkup_chg(int remote_wakup_enable) +{ + /* Enable or disable USB remote wakeup */ +} + +struct lpc32xx_usbd_cfg lpc32xx_usbddata = { + .vbus_drv_pol = 0, + .conn_chgb = &lpc32xx_usbd_conn_chg, + .susp_chgb = &lpc32xx_usbd_susp_chg, + .rmwk_chgb = &lpc32xx_rmwkup_chg, +}; + + +static u64 lpc32xx_usbd_dmamask = ~(u32) 0x7F; + +static int __init lpc32xx_udc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct lpc32xx_udc *udc; + int retval, i; + struct resource *res; + dma_addr_t dma_handle; + struct device_node *isp1301_node; + + udc = kzalloc(sizeof(*udc), GFP_KERNEL); + if (!udc) + return -ENOMEM; + + memcpy(udc, &controller_template, sizeof(*udc)); + for (i = 0; i <= 15; i++) + udc->ep[i].udc = udc; + udc->gadget.ep0 = &udc->ep[0].ep; + + /* init software state */ + udc->gadget.dev.parent = dev; + udc->pdev = pdev; + udc->dev = &pdev->dev; + udc->enabled = 0; + + if (pdev->dev.of_node) { + isp1301_node = of_parse_phandle(pdev->dev.of_node, + "transceiver", 0); + } else { + isp1301_node = NULL; + } + + udc->isp1301_i2c_client = isp1301_get_client(isp1301_node); + if (!udc->isp1301_i2c_client) { + retval = -EPROBE_DEFER; + goto phy_fail; + } + + dev_info(udc->dev, "ISP1301 I2C device at address 0x%x\n", + udc->isp1301_i2c_client->addr); + + pdev->dev.dma_mask = &lpc32xx_usbd_dmamask; + retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (retval) + goto resource_fail; + + udc->board = &lpc32xx_usbddata; + + /* + * Resources are mapped as follows: + * IORESOURCE_MEM, base address and size of USB space + * IORESOURCE_IRQ, USB device low priority interrupt number + * IORESOURCE_IRQ, USB device high priority interrupt number + * IORESOURCE_IRQ, USB device interrupt number + * IORESOURCE_IRQ, USB transceiver interrupt number + */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + retval = -ENXIO; + goto resource_fail; + } + + spin_lock_init(&udc->lock); + + /* Get IRQs */ + for (i = 0; i < 4; i++) { + udc->udp_irq[i] = platform_get_irq(pdev, i); + if (udc->udp_irq[i] < 0) { + dev_err(udc->dev, + "irq resource %d not available!\n", i); + retval = udc->udp_irq[i]; + goto irq_fail; + } + } + + udc->io_p_start = res->start; + udc->io_p_size = resource_size(res); + if (!request_mem_region(udc->io_p_start, udc->io_p_size, driver_name)) { + dev_err(udc->dev, "someone's using UDC memory\n"); + retval = -EBUSY; + goto request_mem_region_fail; + } + + udc->udp_baseaddr = ioremap(udc->io_p_start, udc->io_p_size); + if (!udc->udp_baseaddr) { + retval = -ENOMEM; + dev_err(udc->dev, "IO map failure\n"); + goto io_map_fail; + } + + /* Enable AHB slave USB clock, needed for further USB clock control */ + writel(USB_SLAVE_HCLK_EN | (1 << 19), USB_CTRL); + + /* Get required clocks */ + udc->usb_pll_clk = clk_get(&pdev->dev, "ck_pll5"); + if (IS_ERR(udc->usb_pll_clk)) { + dev_err(udc->dev, "failed to acquire USB PLL\n"); + retval = PTR_ERR(udc->usb_pll_clk); + goto pll_get_fail; + } + udc->usb_slv_clk = clk_get(&pdev->dev, "ck_usbd"); + if (IS_ERR(udc->usb_slv_clk)) { + dev_err(udc->dev, "failed to acquire USB device clock\n"); + retval = PTR_ERR(udc->usb_slv_clk); + goto usb_clk_get_fail; + } + udc->usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg"); + if (IS_ERR(udc->usb_otg_clk)) { + dev_err(udc->dev, "failed to acquire USB otg clock\n"); + retval = PTR_ERR(udc->usb_otg_clk); + goto usb_otg_clk_get_fail; + } + + /* Setup PLL clock to 48MHz */ + retval = clk_enable(udc->usb_pll_clk); + if (retval < 0) { + dev_err(udc->dev, "failed to start USB PLL\n"); + goto pll_enable_fail; + } + + retval = clk_set_rate(udc->usb_pll_clk, 48000); + if (retval < 0) { + dev_err(udc->dev, "failed to set USB clock rate\n"); + goto pll_set_fail; + } + + writel(readl(USB_CTRL) | USB_DEV_NEED_CLK_EN, USB_CTRL); + + /* Enable USB device clock */ + retval = clk_enable(udc->usb_slv_clk); + if (retval < 0) { + dev_err(udc->dev, "failed to start USB device clock\n"); + goto usb_clk_enable_fail; + } + + /* Enable USB OTG clock */ + retval = clk_enable(udc->usb_otg_clk); + if (retval < 0) { + dev_err(udc->dev, "failed to start USB otg clock\n"); + goto usb_otg_clk_enable_fail; + } + + /* Setup deferred workqueue data */ + udc->poweron = udc->pullup = 0; + INIT_WORK(&udc->pullup_job, pullup_work); + INIT_WORK(&udc->vbus_job, vbus_work); +#ifdef CONFIG_PM + INIT_WORK(&udc->power_job, power_work); +#endif + + /* All clocks are now on */ + udc->clocked = 1; + + isp1301_udc_configure(udc); + /* Allocate memory for the UDCA */ + udc->udca_v_base = dma_alloc_coherent(&pdev->dev, UDCA_BUFF_SIZE, + &dma_handle, + (GFP_KERNEL | GFP_DMA)); + if (!udc->udca_v_base) { + dev_err(udc->dev, "error getting UDCA region\n"); + retval = -ENOMEM; + goto i2c_fail; + } + udc->udca_p_base = dma_handle; + dev_dbg(udc->dev, "DMA buffer(0x%x bytes), P:0x%08x, V:0x%p\n", + UDCA_BUFF_SIZE, udc->udca_p_base, udc->udca_v_base); + + /* Setup the DD DMA memory pool */ + udc->dd_cache = dma_pool_create("udc_dd", udc->dev, + sizeof(struct lpc32xx_usbd_dd_gad), + sizeof(u32), 0); + if (!udc->dd_cache) { + dev_err(udc->dev, "error getting DD DMA region\n"); + retval = -ENOMEM; + goto dma_alloc_fail; + } + + /* Clear USB peripheral and initialize gadget endpoints */ + udc_disable(udc); + udc_reinit(udc); + + /* Request IRQs - low and high priority USB device IRQs are routed to + * the same handler, while the DMA interrupt is routed elsewhere */ + retval = request_irq(udc->udp_irq[IRQ_USB_LP], lpc32xx_usb_lp_irq, + 0, "udc_lp", udc); + if (retval < 0) { + dev_err(udc->dev, "LP request irq %d failed\n", + udc->udp_irq[IRQ_USB_LP]); + goto irq_lp_fail; + } + retval = request_irq(udc->udp_irq[IRQ_USB_HP], lpc32xx_usb_hp_irq, + 0, "udc_hp", udc); + if (retval < 0) { + dev_err(udc->dev, "HP request irq %d failed\n", + udc->udp_irq[IRQ_USB_HP]); + goto irq_hp_fail; + } + + retval = request_irq(udc->udp_irq[IRQ_USB_DEVDMA], + lpc32xx_usb_devdma_irq, 0, "udc_dma", udc); + if (retval < 0) { + dev_err(udc->dev, "DEV request irq %d failed\n", + udc->udp_irq[IRQ_USB_DEVDMA]); + goto irq_dev_fail; + } + + /* The transceiver interrupt is used for VBUS detection and will + kick off the VBUS handler function */ + retval = request_irq(udc->udp_irq[IRQ_USB_ATX], lpc32xx_usb_vbus_irq, + 0, "udc_otg", udc); + if (retval < 0) { + dev_err(udc->dev, "VBUS request irq %d failed\n", + udc->udp_irq[IRQ_USB_ATX]); + goto irq_xcvr_fail; + } + + /* Initialize wait queue */ + init_waitqueue_head(&udc->ep_disable_wait_queue); + atomic_set(&udc->enabled_ep_cnt, 0); + + /* Keep all IRQs disabled until GadgetFS starts up */ + for (i = IRQ_USB_LP; i <= IRQ_USB_ATX; i++) + disable_irq(udc->udp_irq[i]); + + retval = usb_add_gadget_udc(dev, &udc->gadget); + if (retval < 0) + goto add_gadget_fail; + + dev_set_drvdata(dev, udc); + device_init_wakeup(dev, 1); + create_debug_file(udc); + + /* Disable clocks for now */ + udc_clk_set(udc, 0); + + dev_info(udc->dev, "%s version %s\n", driver_name, DRIVER_VERSION); + return 0; + +add_gadget_fail: + free_irq(udc->udp_irq[IRQ_USB_ATX], udc); +irq_xcvr_fail: + free_irq(udc->udp_irq[IRQ_USB_DEVDMA], udc); +irq_dev_fail: + free_irq(udc->udp_irq[IRQ_USB_HP], udc); +irq_hp_fail: + free_irq(udc->udp_irq[IRQ_USB_LP], udc); +irq_lp_fail: + dma_pool_destroy(udc->dd_cache); +dma_alloc_fail: + dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, + udc->udca_v_base, udc->udca_p_base); +i2c_fail: + clk_disable(udc->usb_otg_clk); +usb_otg_clk_enable_fail: + clk_disable(udc->usb_slv_clk); +usb_clk_enable_fail: +pll_set_fail: + clk_disable(udc->usb_pll_clk); +pll_enable_fail: + clk_put(udc->usb_otg_clk); +usb_otg_clk_get_fail: + clk_put(udc->usb_slv_clk); +usb_clk_get_fail: + clk_put(udc->usb_pll_clk); +pll_get_fail: + iounmap(udc->udp_baseaddr); +io_map_fail: + release_mem_region(udc->io_p_start, udc->io_p_size); + dev_err(udc->dev, "%s probe failed, %d\n", driver_name, retval); +request_mem_region_fail: +irq_fail: +resource_fail: +phy_fail: + kfree(udc); + return retval; +} + +static int lpc32xx_udc_remove(struct platform_device *pdev) +{ + struct lpc32xx_udc *udc = platform_get_drvdata(pdev); + + usb_del_gadget_udc(&udc->gadget); + if (udc->driver) + return -EBUSY; + + udc_clk_set(udc, 1); + udc_disable(udc); + pullup(udc, 0); + + free_irq(udc->udp_irq[IRQ_USB_ATX], udc); + + device_init_wakeup(&pdev->dev, 0); + remove_debug_file(udc); + + dma_pool_destroy(udc->dd_cache); + dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, + udc->udca_v_base, udc->udca_p_base); + free_irq(udc->udp_irq[IRQ_USB_DEVDMA], udc); + free_irq(udc->udp_irq[IRQ_USB_HP], udc); + free_irq(udc->udp_irq[IRQ_USB_LP], udc); + + clk_disable(udc->usb_otg_clk); + clk_put(udc->usb_otg_clk); + clk_disable(udc->usb_slv_clk); + clk_put(udc->usb_slv_clk); + clk_disable(udc->usb_pll_clk); + clk_put(udc->usb_pll_clk); + iounmap(udc->udp_baseaddr); + release_mem_region(udc->io_p_start, udc->io_p_size); + kfree(udc); + + return 0; +} + +#ifdef CONFIG_PM +static int lpc32xx_udc_suspend(struct platform_device *pdev, pm_message_t mesg) +{ + struct lpc32xx_udc *udc = platform_get_drvdata(pdev); + + if (udc->clocked) { + /* Power down ISP */ + udc->poweron = 0; + isp1301_set_powerstate(udc, 0); + + /* Disable clocking */ + udc_clk_set(udc, 0); + + /* Keep clock flag on, so we know to re-enable clocks + on resume */ + udc->clocked = 1; + + /* Kill global USB clock */ + clk_disable(udc->usb_slv_clk); + } + + return 0; +} + +static int lpc32xx_udc_resume(struct platform_device *pdev) +{ + struct lpc32xx_udc *udc = platform_get_drvdata(pdev); + + if (udc->clocked) { + /* Enable global USB clock */ + clk_enable(udc->usb_slv_clk); + + /* Enable clocking */ + udc_clk_set(udc, 1); + + /* ISP back to normal power mode */ + udc->poweron = 1; + isp1301_set_powerstate(udc, 1); + } + + return 0; +} +#else +#define lpc32xx_udc_suspend NULL +#define lpc32xx_udc_resume NULL +#endif + +#ifdef CONFIG_OF +static struct of_device_id lpc32xx_udc_of_match[] = { + { .compatible = "nxp,lpc3220-udc", }, + { }, +}; +MODULE_DEVICE_TABLE(of, lpc32xx_udc_of_match); +#endif + +static struct platform_driver lpc32xx_udc_driver = { + .remove = lpc32xx_udc_remove, + .shutdown = lpc32xx_udc_shutdown, + .suspend = lpc32xx_udc_suspend, + .resume = lpc32xx_udc_resume, + .driver = { + .name = (char *) driver_name, + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(lpc32xx_udc_of_match), + }, +}; + +module_platform_driver_probe(lpc32xx_udc_driver, lpc32xx_udc_probe); + +MODULE_DESCRIPTION("LPC32XX udc driver"); +MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com>"); +MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:lpc32xx_udc"); diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index 3608b3bd573..0d17174b86f 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -390,7 +390,7 @@ static int alloc_pipe_config(struct m66592_ep *ep, int *counter; int ret; - ep->desc = desc; + ep->ep.desc = desc; BUG_ON(ep->pipenum); @@ -558,7 +558,7 @@ static void start_packet_read(struct m66592_ep *ep, struct m66592_request *req) static void start_packet(struct m66592_ep *ep, struct m66592_request *req) { - if (ep->desc->bEndpointAddress & USB_DIR_IN) + if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) start_packet_write(ep, req); else start_packet_read(ep, req); @@ -734,7 +734,7 @@ __acquires(m66592->lock) if (restart) { req = list_entry(ep->queue.next, struct m66592_request, queue); - if (ep->desc) + if (ep->ep.desc) start_packet(ep, req); } } @@ -917,7 +917,7 @@ static void irq_pipe_ready(struct m66592 *m66592, u16 status, u16 enb) ep = m66592->pipenum2ep[pipenum]; req = list_entry(ep->queue.next, struct m66592_request, queue); - if (ep->desc->bEndpointAddress & USB_DIR_IN) + if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) irq_packet_write(ep, req); else irq_packet_read(ep, req); @@ -1377,7 +1377,7 @@ static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req, req->req.actual = 0; req->req.status = -EINPROGRESS; - if (ep->desc == NULL) /* control */ + if (ep->ep.desc == NULL) /* control */ start_ep0(ep, req); else { if (request && !ep->busy) @@ -1463,41 +1463,14 @@ static struct usb_ep_ops m66592_ep_ops = { }; /*-------------------------------------------------------------------------*/ -static struct m66592 *the_controller; - -static int m66592_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int m66592_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct m66592 *m66592 = the_controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_HIGH - || !bind - || !driver->setup) - return -EINVAL; - if (!m66592) - return -ENODEV; - if (m66592->driver) - return -EBUSY; + struct m66592 *m66592 = to_m66592(g); /* hook up the driver */ driver->driver.bus = NULL; m66592->driver = driver; - m66592->gadget.dev.driver = &driver->driver; - - retval = device_add(&m66592->gadget.dev); - if (retval) { - pr_err("device_add error (%d)\n", retval); - goto error; - } - - retval = bind(&m66592->gadget); - if (retval) { - pr_err("bind to driver error (%d)\n", retval); - device_del(&m66592->gadget.dev); - goto error; - } m66592_bset(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); if (m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS) { @@ -1510,37 +1483,22 @@ static int m66592_start(struct usb_gadget_driver *driver, } return 0; - -error: - m66592->driver = NULL; - m66592->gadget.dev.driver = NULL; - - return retval; } -static int m66592_stop(struct usb_gadget_driver *driver) +static int m66592_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct m66592 *m66592 = the_controller; - unsigned long flags; - - if (driver != m66592->driver || !driver->unbind) - return -EINVAL; - - spin_lock_irqsave(&m66592->lock, flags); - if (m66592->gadget.speed != USB_SPEED_UNKNOWN) - m66592_usb_disconnect(m66592); - spin_unlock_irqrestore(&m66592->lock, flags); + struct m66592 *m66592 = to_m66592(g); m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); driver->unbind(&m66592->gadget); - m66592->gadget.dev.driver = NULL; init_controller(m66592); disable_controller(m66592); - device_del(&m66592->gadget.dev); m66592->driver = NULL; + return 0; } @@ -1566,16 +1524,16 @@ static int m66592_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static struct usb_gadget_ops m66592_gadget_ops = { +static const struct usb_gadget_ops m66592_gadget_ops = { .get_frame = m66592_get_frame, - .start = m66592_start, - .stop = m66592_stop, + .udc_start = m66592_udc_start, + .udc_stop = m66592_udc_stop, .pullup = m66592_pullup, }; static int __exit m66592_remove(struct platform_device *pdev) { - struct m66592 *m66592 = dev_get_drvdata(&pdev->dev); + struct m66592 *m66592 = platform_get_drvdata(pdev); usb_del_gadget_udc(&m66592->gadget); @@ -1583,12 +1541,10 @@ static int __exit m66592_remove(struct platform_device *pdev) iounmap(m66592->reg); free_irq(platform_get_irq(pdev, 0), m66592); m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); -#ifdef CONFIG_HAVE_CLK if (m66592->pdata->on_chip) { clk_disable(m66592->clk); clk_put(m66592->clk); } -#endif kfree(m66592); return 0; } @@ -1602,9 +1558,7 @@ static int __init m66592_probe(struct platform_device *pdev) struct resource *res, *ires; void __iomem *reg = NULL; struct m66592 *m66592 = NULL; -#ifdef CONFIG_HAVE_CLK char clk_name[8]; -#endif int ret = 0; int i; @@ -1630,7 +1584,7 @@ static int __init m66592_probe(struct platform_device *pdev) goto clean_up; } - if (pdev->dev.platform_data == NULL) { + if (dev_get_platdata(&pdev->dev) == NULL) { dev_err(&pdev->dev, "no platform data\n"); ret = -ENODEV; goto clean_up; @@ -1640,23 +1594,17 @@ static int __init m66592_probe(struct platform_device *pdev) m66592 = kzalloc(sizeof(struct m66592), GFP_KERNEL); if (m66592 == NULL) { ret = -ENOMEM; - pr_err("kzalloc error\n"); goto clean_up; } - m66592->pdata = pdev->dev.platform_data; + m66592->pdata = dev_get_platdata(&pdev->dev); m66592->irq_trigger = ires->flags & IRQF_TRIGGER_MASK; spin_lock_init(&m66592->lock); - dev_set_drvdata(&pdev->dev, m66592); + platform_set_drvdata(pdev, m66592); m66592->gadget.ops = &m66592_gadget_ops; - device_initialize(&m66592->gadget.dev); - dev_set_name(&m66592->gadget.dev, "gadget"); m66592->gadget.max_speed = USB_SPEED_HIGH; - m66592->gadget.dev.parent = &pdev->dev; - m66592->gadget.dev.dma_mask = pdev->dev.dma_mask; - m66592->gadget.dev.release = pdev->dev.release; m66592->gadget.name = udc_name; init_timer(&m66592->timer); @@ -1671,7 +1619,6 @@ static int __init m66592_probe(struct platform_device *pdev) goto clean_up; } -#ifdef CONFIG_HAVE_CLK if (m66592->pdata->on_chip) { snprintf(clk_name, sizeof(clk_name), "usbf%d", pdev->id); m66592->clk = clk_get(&pdev->dev, clk_name); @@ -1683,7 +1630,7 @@ static int __init m66592_probe(struct platform_device *pdev) } clk_enable(m66592->clk); } -#endif + INIT_LIST_HEAD(&m66592->gadget.ep_list); m66592->gadget.ep0 = &m66592->ep[0].ep; INIT_LIST_HEAD(&m66592->gadget.ep0->ep_list); @@ -1699,9 +1646,9 @@ static int __init m66592_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = m66592_ep_name[i]; ep->ep.ops = &m66592_ep_ops; - ep->ep.maxpacket = 512; + usb_ep_set_maxpacket_limit(&ep->ep, 512); } - m66592->ep[0].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&m66592->ep[0].ep, 64); m66592->ep[0].pipenum = 0; m66592->ep[0].fifoaddr = M66592_CFIFO; m66592->ep[0].fifosel = M66592_CFIFOSEL; @@ -1711,11 +1658,11 @@ static int __init m66592_probe(struct platform_device *pdev) m66592->pipenum2ep[0] = &m66592->ep[0]; m66592->epaddr2ep[0] = &m66592->ep[0]; - the_controller = m66592; - m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL); - if (m66592->ep0_req == NULL) + if (m66592->ep0_req == NULL) { + ret = -ENOMEM; goto clean_up3; + } m66592->ep0_req->complete = nop_completion; init_controller(m66592); @@ -1731,13 +1678,11 @@ err_add_udc: m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); clean_up3: -#ifdef CONFIG_HAVE_CLK if (m66592->pdata->on_chip) { clk_disable(m66592->clk); clk_put(m66592->clk); } clean_up2: -#endif free_irq(ires->start, m66592); clean_up: if (m66592) { @@ -1760,14 +1705,4 @@ static struct platform_driver m66592_driver = { }, }; -static int __init m66592_udc_init(void) -{ - return platform_driver_probe(&m66592_driver, m66592_probe); -} -module_init(m66592_udc_init); - -static void __exit m66592_udc_cleanup(void) -{ - platform_driver_unregister(&m66592_driver); -} -module_exit(m66592_udc_cleanup); +module_platform_driver_probe(m66592_driver, m66592_probe); diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h index 9d9f7e39f03..96d49d7bfb6 100644 --- a/drivers/usb/gadget/m66592-udc.h +++ b/drivers/usb/gadget/m66592-udc.h @@ -13,10 +13,7 @@ #ifndef __M66592_UDC_H__ #define __M66592_UDC_H__ -#ifdef CONFIG_HAVE_CLK #include <linux/clk.h> -#endif - #include <linux/usb/m66592.h> #define M66592_SYSCFG 0x00 @@ -456,7 +453,7 @@ struct m66592_ep { unsigned use_dma:1; u16 pipenum; u16 type; - const struct usb_endpoint_descriptor *desc; + /* register address */ unsigned long fifoaddr; unsigned long fifosel; @@ -468,9 +465,7 @@ struct m66592_ep { struct m66592 { spinlock_t lock; void __iomem *reg; -#ifdef CONFIG_HAVE_CLK struct clk *clk; -#endif struct m66592_platdata *pdata; unsigned long irq_trigger; @@ -497,6 +492,7 @@ struct m66592 { int isochronous; int num_dma; }; +#define to_m66592(g) (container_of((g), struct m66592, gadget)) #define gadget_to_m66592(_gadget) container_of(_gadget, struct m66592, gadget) #define m66592_to_gadget(m66592) (&m66592->gadget) diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c index e24f72f82a4..8e27a8c9644 100644 --- a/drivers/usb/gadget/mass_storage.c +++ b/drivers/usb/gadget/mass_storage.c @@ -3,7 +3,7 @@ * * Copyright (C) 2003-2008 Alan Stern * Copyright (C) 2009 Samsung Electronics - * Author: Michal Nazarewicz <m.nazarewicz@samsung.com> + * Author: Michal Nazarewicz <mina86@mina86.com> * All rights reserved. * * This program is free software; you can redistribute it and/or modify @@ -29,32 +29,27 @@ #include <linux/kernel.h> -#include <linux/utsname.h> #include <linux/usb/ch9.h> - +#include <linux/module.h> /*-------------------------------------------------------------------------*/ #define DRIVER_DESC "Mass Storage Gadget" #define DRIVER_VERSION "2009/09/11" -/*-------------------------------------------------------------------------*/ - /* - * kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + * Thanks to NetChip Technologies for donating this product ID. + * + * DO NOT REUSE THESE IDs with any other driver!! Ever!! + * Instead: allocate your own, using normal USB-IF procedures. */ +#define FSG_VENDOR_ID 0x0525 /* NetChip */ +#define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" -#include "f_mass_storage.c" +#include "f_mass_storage.h" /*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); static struct usb_device_descriptor msg_device_desc = { .bLength = sizeof msg_device_desc, @@ -85,12 +80,45 @@ static const struct usb_descriptor_header *otg_desc[] = { NULL, }; +static struct usb_string strings_dev[] = { + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + +static struct usb_function_instance *fi_msg; +static struct usb_function *f_msg; /****************************** Configurations ******************************/ static struct fsg_module_parameters mod_data = { .stall = 1 }; +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS; + +#else + +/* + * Number of buffers we will use. + * 2 is usually enough for good buffering pipeline + */ +#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS + +#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ + FSG_MODULE_PARAMETERS(/* no prefix */, mod_data); static unsigned long msg_registered; @@ -104,13 +132,7 @@ static int msg_thread_exits(struct fsg_common *common) static int __init msg_do_config(struct usb_configuration *c) { - static const struct fsg_operations ops = { - .thread_exits = msg_thread_exits, - }; - static struct fsg_common common; - - struct fsg_common *retp; - struct fsg_config config; + struct fsg_opts *opts; int ret; if (gadget_is_otg(c->cdev->gadget)) { @@ -118,15 +140,24 @@ static int __init msg_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - fsg_config_from_params(&config, &mod_data); - config.ops = &ops; + opts = fsg_opts_from_func_inst(fi_msg); + + f_msg = usb_get_function(fi_msg); + if (IS_ERR(f_msg)) + return PTR_ERR(f_msg); - retp = fsg_common_init(&common, c->cdev, &config); - if (IS_ERR(retp)) - return PTR_ERR(retp); + ret = fsg_common_run_thread(opts->common); + if (ret) + goto put_func; - ret = fsg_bind_config(c->cdev, c, &common); - fsg_common_put(&common); + ret = usb_add_function(c, f_msg); + if (ret) + goto put_func; + + return 0; + +put_func: + usb_put_function(f_msg); return ret; } @@ -141,27 +172,90 @@ static struct usb_configuration msg_config_driver = { static int __init msg_bind(struct usb_composite_dev *cdev) { + static const struct fsg_operations ops = { + .thread_exits = msg_thread_exits, + }; + struct fsg_opts *opts; + struct fsg_config config; int status; + fi_msg = usb_get_function_instance("mass_storage"); + if (IS_ERR(fi_msg)) + return PTR_ERR(fi_msg); + + fsg_config_from_params(&config, &mod_data, fsg_num_buffers); + opts = fsg_opts_from_func_inst(fi_msg); + + opts->no_configfs = true; + status = fsg_common_set_num_buffers(opts->common, fsg_num_buffers); + if (status) + goto fail; + + status = fsg_common_set_nluns(opts->common, config.nluns); + if (status) + goto fail_set_nluns; + + fsg_common_set_ops(opts->common, &ops); + + status = fsg_common_set_cdev(opts->common, cdev, config.can_stall); + if (status) + goto fail_set_cdev; + + fsg_common_set_sysfs(opts->common, true); + status = fsg_common_create_luns(opts->common, &config); + if (status) + goto fail_set_cdev; + + fsg_common_set_inquiry_string(opts->common, config.vendor_name, + config.product_name); + + status = usb_string_ids_tab(cdev, strings_dev); + if (status < 0) + goto fail_string_ids; + msg_device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + status = usb_add_config(cdev, &msg_config_driver, msg_do_config); if (status < 0) - return status; + goto fail_string_ids; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&cdev->gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); set_bit(0, &msg_registered); return 0; + +fail_string_ids: + fsg_common_remove_luns(opts->common); +fail_set_cdev: + fsg_common_free_luns(opts->common); +fail_set_nluns: + fsg_common_free_buffers(opts->common); +fail: + usb_put_function_instance(fi_msg); + return status; } +static int msg_unbind(struct usb_composite_dev *cdev) +{ + if (!IS_ERR(f_msg)) + usb_put_function(f_msg); + + if (!IS_ERR(fi_msg)) + usb_put_function_instance(fi_msg); + + return 0; +} /****************************** Some noise ******************************/ -static struct usb_composite_driver msg_driver = { +static __refdata struct usb_composite_driver msg_driver = { .name = "g_mass_storage", .dev = &msg_device_desc, - .iProduct = DRIVER_DESC, .max_speed = USB_SPEED_SUPER, .needs_serial = 1, + .strings = dev_strings, + .bind = msg_bind, + .unbind = msg_unbind, }; MODULE_DESCRIPTION(DRIVER_DESC); @@ -170,7 +264,7 @@ MODULE_LICENSE("GPL"); static int __init msg_init(void) { - return usb_composite_probe(&msg_driver, msg_bind); + return usb_composite_probe(&msg_driver); } module_init(msg_init); diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 7e7f515b8b1..940f6cde8e8 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -4,7 +4,7 @@ * Copyright (C) 2008 David Brownell * Copyright (C) 2008 Nokia Corporation * Copyright (C) 2009 Samsung Electronics - * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) + * Author: Michal Nazarewicz (mina86@mina86.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -14,10 +14,10 @@ #include <linux/kernel.h> -#include <linux/utsname.h> #include <linux/module.h> +#include <linux/netdevice.h> - +#include "u_serial.h" #if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS #endif @@ -33,35 +33,18 @@ MODULE_AUTHOR("Michal Nazarewicz"); MODULE_LICENSE("GPL"); -/***************************** All the files... *****************************/ - -/* - * kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ - -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -#include "f_mass_storage.c" +#include "f_mass_storage.h" -#include "u_serial.c" -#include "f_acm.c" - -#include "f_ecm.c" -#include "f_subset.c" +#include "u_ecm.h" #ifdef USB_ETH_RNDIS -# include "f_rndis.c" -# include "rndis.c" +# include "u_rndis.h" +# include "rndis.h" #endif -#include "u_ether.c" +#include "u_ether.h" +USB_GADGET_COMPOSITE_OPTIONS(); +USB_ETHERNET_MODULE_PARAMETERS(); /***************************** Device Descriptor ****************************/ @@ -112,21 +95,16 @@ static const struct usb_descriptor_header *otg_desc[] = { enum { -#ifdef CONFIG_USB_G_MULTI_RNDIS - MULTI_STRING_RNDIS_CONFIG_IDX, -#endif -#ifdef CONFIG_USB_G_MULTI_CDC + MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX, MULTI_STRING_CDC_CONFIG_IDX, -#endif }; static struct usb_string strings_dev[] = { -#ifdef CONFIG_USB_G_MULTI_RNDIS + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", [MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS", -#endif -#ifdef CONFIG_USB_G_MULTI_CDC [MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM", -#endif { } /* end of list */ }; @@ -144,19 +122,36 @@ static struct usb_gadget_strings *dev_strings[] = { /****************************** Configurations ******************************/ static struct fsg_module_parameters fsg_mod_data = { .stall = 1 }; -FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS; + +#else + +/* + * Number of buffers we will use. + * 2 is usually enough for good buffering pipeline + */ +#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS -static struct fsg_common fsg_common; +#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ -static u8 hostaddr[ETH_ALEN]; +FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); +static struct usb_function_instance *fi_acm; +static struct usb_function_instance *fi_msg; /********** RNDIS **********/ #ifdef USB_ETH_RNDIS +static struct usb_function_instance *fi_rndis; +static struct usb_function *f_acm_rndis; +static struct usb_function *f_rndis; +static struct usb_function *f_msg_rndis; static __init int rndis_do_config(struct usb_configuration *c) { + struct fsg_opts *fsg_opts; int ret; if (gadget_is_otg(c->cdev->gadget)) { @@ -164,22 +159,54 @@ static __init int rndis_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - ret = rndis_bind_config(c, hostaddr); - if (ret < 0) - return ret; + f_rndis = usb_get_function(fi_rndis); + if (IS_ERR(f_rndis)) + return PTR_ERR(f_rndis); - ret = acm_bind_config(c, 0); + ret = usb_add_function(c, f_rndis); if (ret < 0) - return ret; + goto err_func_rndis; - ret = fsg_bind_config(c->cdev, c, &fsg_common); - if (ret < 0) - return ret; + f_acm_rndis = usb_get_function(fi_acm); + if (IS_ERR(f_acm_rndis)) { + ret = PTR_ERR(f_acm_rndis); + goto err_func_acm; + } + + ret = usb_add_function(c, f_acm_rndis); + if (ret) + goto err_conf; + + f_msg_rndis = usb_get_function(fi_msg); + if (IS_ERR(f_msg_rndis)) { + ret = PTR_ERR(f_msg_rndis); + goto err_fsg; + } + + fsg_opts = fsg_opts_from_func_inst(fi_msg); + ret = fsg_common_run_thread(fsg_opts->common); + if (ret) + goto err_run; + + ret = usb_add_function(c, f_msg_rndis); + if (ret) + goto err_run; return 0; +err_run: + usb_put_function(f_msg_rndis); +err_fsg: + usb_remove_function(c, f_acm_rndis); +err_conf: + usb_put_function(f_acm_rndis); +err_func_acm: + usb_remove_function(c, f_rndis); +err_func_rndis: + usb_put_function(f_rndis); + return ret; } -static int rndis_config_register(struct usb_composite_dev *cdev) +static __ref int rndis_config_register(struct usb_composite_dev *cdev) { static struct usb_configuration config = { .bConfigurationValue = MULTI_RNDIS_CONFIG_NUM, @@ -194,7 +221,7 @@ static int rndis_config_register(struct usb_composite_dev *cdev) #else -static int rndis_config_register(struct usb_composite_dev *cdev) +static __ref int rndis_config_register(struct usb_composite_dev *cdev) { return 0; } @@ -205,9 +232,14 @@ static int rndis_config_register(struct usb_composite_dev *cdev) /********** CDC ECM **********/ #ifdef CONFIG_USB_G_MULTI_CDC +static struct usb_function_instance *fi_ecm; +static struct usb_function *f_acm_multi; +static struct usb_function *f_ecm; +static struct usb_function *f_msg_multi; static __init int cdc_do_config(struct usb_configuration *c) { + struct fsg_opts *fsg_opts; int ret; if (gadget_is_otg(c->cdev->gadget)) { @@ -215,22 +247,55 @@ static __init int cdc_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - ret = ecm_bind_config(c, hostaddr); - if (ret < 0) - return ret; + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) + return PTR_ERR(f_ecm); - ret = acm_bind_config(c, 0); + ret = usb_add_function(c, f_ecm); if (ret < 0) - return ret; + goto err_func_ecm; - ret = fsg_bind_config(c->cdev, c, &fsg_common); - if (ret < 0) - return ret; + /* implicit port_num is zero */ + f_acm_multi = usb_get_function(fi_acm); + if (IS_ERR(f_acm_multi)) { + ret = PTR_ERR(f_acm_multi); + goto err_func_acm; + } + + ret = usb_add_function(c, f_acm_multi); + if (ret) + goto err_conf; + + f_msg_multi = usb_get_function(fi_msg); + if (IS_ERR(f_msg_multi)) { + ret = PTR_ERR(f_msg_multi); + goto err_fsg; + } + + fsg_opts = fsg_opts_from_func_inst(fi_msg); + ret = fsg_common_run_thread(fsg_opts->common); + if (ret) + goto err_run; + + ret = usb_add_function(c, f_msg_multi); + if (ret) + goto err_run; return 0; +err_run: + usb_put_function(f_msg_multi); +err_fsg: + usb_remove_function(c, f_acm_multi); +err_conf: + usb_put_function(f_acm_multi); +err_func_acm: + usb_remove_function(c, f_ecm); +err_func_ecm: + usb_put_function(f_ecm); + return ret; } -static int cdc_config_register(struct usb_composite_dev *cdev) +static __ref int cdc_config_register(struct usb_composite_dev *cdev) { static struct usb_configuration config = { .bConfigurationValue = MULTI_CDC_CONFIG_NUM, @@ -245,7 +310,7 @@ static int cdc_config_register(struct usb_composite_dev *cdev) #else -static int cdc_config_register(struct usb_composite_dev *cdev) +static __ref int cdc_config_register(struct usb_composite_dev *cdev) { return 0; } @@ -256,81 +321,175 @@ static int cdc_config_register(struct usb_composite_dev *cdev) /****************************** Gadget Bind ******************************/ - static int __ref multi_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; - int status, gcnum; +#ifdef CONFIG_USB_G_MULTI_CDC + struct f_ecm_opts *ecm_opts; +#endif +#ifdef USB_ETH_RNDIS + struct f_rndis_opts *rndis_opts; +#endif + struct fsg_opts *fsg_opts; + struct fsg_config config; + int status; if (!can_support_ecm(cdev->gadget)) { dev_err(&gadget->dev, "controller '%s' not usable\n", - gadget->name); + gadget->name); return -EINVAL; } - /* set up network link layer */ - status = gether_setup(cdev->gadget, hostaddr); - if (status < 0) - return status; +#ifdef CONFIG_USB_G_MULTI_CDC + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); + + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + + gether_set_qmult(ecm_opts->net, qmult); + if (!gether_set_host_addr(ecm_opts->net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(ecm_opts->net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); +#endif + +#ifdef USB_ETH_RNDIS + fi_rndis = usb_get_function_instance("rndis"); + if (IS_ERR(fi_rndis)) { + status = PTR_ERR(fi_rndis); + goto fail; + } + + rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst); + + gether_set_qmult(rndis_opts->net, qmult); + if (!gether_set_host_addr(rndis_opts->net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(rndis_opts->net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); +#endif + +#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS) + /* + * If both ecm and rndis are selected then: + * 1) rndis borrows the net interface from ecm + * 2) since the interface is shared it must not be bound + * twice - in ecm's _and_ rndis' binds, so do it here. + */ + gether_set_gadget(ecm_opts->net, cdev->gadget); + status = gether_register_netdev(ecm_opts->net); + if (status) + goto fail0; + + rndis_borrow_net(fi_rndis, ecm_opts->net); + ecm_opts->bound = true; +#endif /* set up serial link layer */ - status = gserial_setup(cdev->gadget, 1); - if (status < 0) + fi_acm = usb_get_function_instance("acm"); + if (IS_ERR(fi_acm)) { + status = PTR_ERR(fi_acm); goto fail0; + } /* set up mass storage function */ - { - void *retp; - retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data); - if (IS_ERR(retp)) { - status = PTR_ERR(retp); - goto fail1; - } + fi_msg = usb_get_function_instance("mass_storage"); + if (IS_ERR(fi_msg)) { + status = PTR_ERR(fi_msg); + goto fail1; } + fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers); + fsg_opts = fsg_opts_from_func_inst(fi_msg); - /* set bcdDevice */ - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) { - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - } else { - WARNING(cdev, "controller '%s' not recognized\n", gadget->name); - device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); - } + fsg_opts->no_configfs = true; + status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers); + if (status) + goto fail2; + + status = fsg_common_set_nluns(fsg_opts->common, config.nluns); + if (status) + goto fail_set_nluns; + + status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall); + if (status) + goto fail_set_cdev; + + fsg_common_set_sysfs(fsg_opts->common, true); + status = fsg_common_create_luns(fsg_opts->common, &config); + if (status) + goto fail_set_cdev; + + fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name, + config.product_name); /* allocate string IDs */ status = usb_string_ids_tab(cdev, strings_dev); if (unlikely(status < 0)) - goto fail2; + goto fail_string_ids; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; /* register configurations */ status = rndis_config_register(cdev); if (unlikely(status < 0)) - goto fail2; + goto fail_string_ids; status = cdc_config_register(cdev); if (unlikely(status < 0)) - goto fail2; + goto fail_string_ids; + usb_composite_overwrite_options(cdev, &coverwrite); /* we're done */ dev_info(&gadget->dev, DRIVER_DESC "\n"); - fsg_common_put(&fsg_common); return 0; /* error recovery */ +fail_string_ids: + fsg_common_remove_luns(fsg_opts->common); +fail_set_cdev: + fsg_common_free_luns(fsg_opts->common); +fail_set_nluns: + fsg_common_free_buffers(fsg_opts->common); fail2: - fsg_common_put(&fsg_common); + usb_put_function_instance(fi_msg); fail1: - gserial_cleanup(); + usb_put_function_instance(fi_acm); fail0: - gether_cleanup(); +#ifdef USB_ETH_RNDIS + usb_put_function_instance(fi_rndis); +fail: +#endif +#ifdef CONFIG_USB_G_MULTI_CDC + usb_put_function_instance(fi_ecm); +#endif return status; } static int __exit multi_unbind(struct usb_composite_dev *cdev) { - gserial_cleanup(); - gether_cleanup(); +#ifdef CONFIG_USB_G_MULTI_CDC + usb_put_function(f_msg_multi); +#endif +#ifdef USB_ETH_RNDIS + usb_put_function(f_msg_rndis); +#endif + usb_put_function_instance(fi_msg); +#ifdef CONFIG_USB_G_MULTI_CDC + usb_put_function(f_acm_multi); +#endif +#ifdef USB_ETH_RNDIS + usb_put_function(f_acm_rndis); +#endif + usb_put_function_instance(fi_acm); +#ifdef USB_ETH_RNDIS + usb_put_function(f_rndis); + usb_put_function_instance(fi_rndis); +#endif +#ifdef CONFIG_USB_G_MULTI_CDC + usb_put_function(f_ecm); + usb_put_function_instance(fi_ecm); +#endif return 0; } @@ -338,20 +497,20 @@ static int __exit multi_unbind(struct usb_composite_dev *cdev) /****************************** Some noise ******************************/ -static struct usb_composite_driver multi_driver = { +static __refdata struct usb_composite_driver multi_driver = { .name = "g_multi", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = multi_bind, .unbind = __exit_p(multi_unbind), - .iProduct = DRIVER_DESC, .needs_serial = 1, }; static int __init multi_init(void) { - return usb_composite_probe(&multi_driver, multi_bind); + return usb_composite_probe(&multi_driver); } module_init(multi_init); diff --git a/drivers/usb/gadget/mv_u3d.h b/drivers/usb/gadget/mv_u3d.h new file mode 100644 index 00000000000..e32a787ac37 --- /dev/null +++ b/drivers/usb/gadget/mv_u3d.h @@ -0,0 +1,320 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +#ifndef __MV_U3D_H +#define __MV_U3D_H + +#define MV_U3D_EP_CONTEXT_ALIGNMENT 32 +#define MV_U3D_TRB_ALIGNMENT 16 +#define MV_U3D_DMA_BOUNDARY 4096 +#define MV_U3D_EP0_MAX_PKT_SIZE 512 + +/* ep0 transfer state */ +#define MV_U3D_WAIT_FOR_SETUP 0 +#define MV_U3D_DATA_STATE_XMIT 1 +#define MV_U3D_DATA_STATE_NEED_ZLP 2 +#define MV_U3D_WAIT_FOR_OUT_STATUS 3 +#define MV_U3D_DATA_STATE_RECV 4 +#define MV_U3D_STATUS_STAGE 5 + +#define MV_U3D_EP_MAX_LENGTH_TRANSFER 0x10000 + +/* USB3 Interrupt Status */ +#define MV_U3D_USBINT_SETUP 0x00000001 +#define MV_U3D_USBINT_RX_COMPLETE 0x00000002 +#define MV_U3D_USBINT_TX_COMPLETE 0x00000004 +#define MV_U3D_USBINT_UNDER_RUN 0x00000008 +#define MV_U3D_USBINT_RXDESC_ERR 0x00000010 +#define MV_U3D_USBINT_TXDESC_ERR 0x00000020 +#define MV_U3D_USBINT_RX_TRB_COMPLETE 0x00000040 +#define MV_U3D_USBINT_TX_TRB_COMPLETE 0x00000080 +#define MV_U3D_USBINT_VBUS_VALID 0x00010000 +#define MV_U3D_USBINT_STORAGE_CMD_FULL 0x00020000 +#define MV_U3D_USBINT_LINK_CHG 0x01000000 + +/* USB3 Interrupt Enable */ +#define MV_U3D_INTR_ENABLE_SETUP 0x00000001 +#define MV_U3D_INTR_ENABLE_RX_COMPLETE 0x00000002 +#define MV_U3D_INTR_ENABLE_TX_COMPLETE 0x00000004 +#define MV_U3D_INTR_ENABLE_UNDER_RUN 0x00000008 +#define MV_U3D_INTR_ENABLE_RXDESC_ERR 0x00000010 +#define MV_U3D_INTR_ENABLE_TXDESC_ERR 0x00000020 +#define MV_U3D_INTR_ENABLE_RX_TRB_COMPLETE 0x00000040 +#define MV_U3D_INTR_ENABLE_TX_TRB_COMPLETE 0x00000080 +#define MV_U3D_INTR_ENABLE_RX_BUFFER_ERR 0x00000100 +#define MV_U3D_INTR_ENABLE_VBUS_VALID 0x00010000 +#define MV_U3D_INTR_ENABLE_STORAGE_CMD_FULL 0x00020000 +#define MV_U3D_INTR_ENABLE_LINK_CHG 0x01000000 +#define MV_U3D_INTR_ENABLE_PRIME_STATUS 0x02000000 + +/* USB3 Link Change */ +#define MV_U3D_LINK_CHANGE_LINK_UP 0x00000001 +#define MV_U3D_LINK_CHANGE_SUSPEND 0x00000002 +#define MV_U3D_LINK_CHANGE_RESUME 0x00000004 +#define MV_U3D_LINK_CHANGE_WRESET 0x00000008 +#define MV_U3D_LINK_CHANGE_HRESET 0x00000010 +#define MV_U3D_LINK_CHANGE_VBUS_INVALID 0x00000020 +#define MV_U3D_LINK_CHANGE_INACT 0x00000040 +#define MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0 0x00000080 +#define MV_U3D_LINK_CHANGE_U1 0x00000100 +#define MV_U3D_LINK_CHANGE_U2 0x00000200 +#define MV_U3D_LINK_CHANGE_U3 0x00000400 + +/* bridge setting */ +#define MV_U3D_BRIDGE_SETTING_VBUS_VALID (1 << 16) + +/* Command Register Bit Masks */ +#define MV_U3D_CMD_RUN_STOP 0x00000001 +#define MV_U3D_CMD_CTRL_RESET 0x00000002 + +/* ep control register */ +#define MV_U3D_EPXCR_EP_TYPE_CONTROL 0 +#define MV_U3D_EPXCR_EP_TYPE_ISOC 1 +#define MV_U3D_EPXCR_EP_TYPE_BULK 2 +#define MV_U3D_EPXCR_EP_TYPE_INT 3 +#define MV_U3D_EPXCR_EP_ENABLE_SHIFT 4 +#define MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT 12 +#define MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT 16 +#define MV_U3D_USB_BULK_BURST_OUT 6 +#define MV_U3D_USB_BULK_BURST_IN 14 + +#define MV_U3D_EPXCR_EP_FLUSH (1 << 7) +#define MV_U3D_EPXCR_EP_HALT (1 << 1) +#define MV_U3D_EPXCR_EP_INIT (1) + +/* TX/RX Status Register */ +#define MV_U3D_XFERSTATUS_COMPLETE_SHIFT 24 +#define MV_U3D_COMPLETE_INVALID 0 +#define MV_U3D_COMPLETE_SUCCESS 1 +#define MV_U3D_COMPLETE_BUFF_ERR 2 +#define MV_U3D_COMPLETE_SHORT_PACKET 3 +#define MV_U3D_COMPLETE_TRB_ERR 5 +#define MV_U3D_XFERSTATUS_TRB_LENGTH_MASK (0xFFFFFF) + +#define MV_U3D_USB_LINK_BYPASS_VBUS 0x8 + +#define MV_U3D_LTSSM_PHY_INIT_DONE 0x80000000 +#define MV_U3D_LTSSM_NEVER_GO_COMPLIANCE 0x40000000 + +#define MV_U3D_USB3_OP_REGS_OFFSET 0x100 +#define MV_U3D_USB3_PHY_OFFSET 0xB800 + +#define DCS_ENABLE 0x1 + +/* timeout */ +#define MV_U3D_RESET_TIMEOUT 10000 +#define MV_U3D_FLUSH_TIMEOUT 100000 +#define MV_U3D_OWN_TIMEOUT 10000 +#define LOOPS_USEC_SHIFT 4 +#define LOOPS_USEC (1 << LOOPS_USEC_SHIFT) +#define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT) + +/* ep direction */ +#define MV_U3D_EP_DIR_IN 1 +#define MV_U3D_EP_DIR_OUT 0 +#define mv_u3d_ep_dir(ep) (((ep)->ep_num == 0) ? \ + ((ep)->u3d->ep0_dir) : ((ep)->direction)) + +/* usb capability registers */ +struct mv_u3d_cap_regs { + u32 rsvd[5]; + u32 dboff; /* doorbell register offset */ + u32 rtsoff; /* runtime register offset */ + u32 vuoff; /* vendor unique register offset */ +}; + +/* operation registers */ +struct mv_u3d_op_regs { + u32 usbcmd; /* Command register */ + u32 rsvd1[11]; + u32 dcbaapl; /* Device Context Base Address low register */ + u32 dcbaaph; /* Device Context Base Address high register */ + u32 rsvd2[243]; + u32 portsc; /* port status and control register*/ + u32 portlinkinfo; /* port link info register*/ + u32 rsvd3[9917]; + u32 doorbell; /* doorbell register */ +}; + +/* control enpoint enable registers */ +struct epxcr { + u32 epxoutcr0; /* ep out control 0 register */ + u32 epxoutcr1; /* ep out control 1 register */ + u32 epxincr0; /* ep in control 0 register */ + u32 epxincr1; /* ep in control 1 register */ +}; + +/* transfer status registers */ +struct xferstatus { + u32 curdeqlo; /* current TRB pointer low */ + u32 curdeqhi; /* current TRB pointer high */ + u32 statuslo; /* transfer status low */ + u32 statushi; /* transfer status high */ +}; + +/* vendor unique control registers */ +struct mv_u3d_vuc_regs { + u32 ctrlepenable; /* control endpoint enable register */ + u32 setuplock; /* setup lock register */ + u32 endcomplete; /* endpoint transfer complete register */ + u32 intrcause; /* interrupt cause register */ + u32 intrenable; /* interrupt enable register */ + u32 trbcomplete; /* TRB complete register */ + u32 linkchange; /* link change register */ + u32 rsvd1[5]; + u32 trbunderrun; /* TRB underrun register */ + u32 rsvd2[43]; + u32 bridgesetting; /* bridge setting register */ + u32 rsvd3[7]; + struct xferstatus txst[16]; /* TX status register */ + struct xferstatus rxst[16]; /* RX status register */ + u32 ltssm; /* LTSSM control register */ + u32 pipe; /* PIPE control register */ + u32 linkcr0; /* link control 0 register */ + u32 linkcr1; /* link control 1 register */ + u32 rsvd6[60]; + u32 mib0; /* MIB0 counter register */ + u32 usblink; /* usb link control register */ + u32 ltssmstate; /* LTSSM state register */ + u32 linkerrorcause; /* link error cause register */ + u32 rsvd7[60]; + u32 devaddrtiebrkr; /* device address and tie breaker */ + u32 itpinfo0; /* ITP info 0 register */ + u32 itpinfo1; /* ITP info 1 register */ + u32 rsvd8[61]; + struct epxcr epcr[16]; /* ep control register */ + u32 rsvd9[64]; + u32 phyaddr; /* PHY address register */ + u32 phydata; /* PHY data register */ +}; + +/* Endpoint context structure */ +struct mv_u3d_ep_context { + u32 rsvd0; + u32 rsvd1; + u32 trb_addr_lo; /* TRB address low 32 bit */ + u32 trb_addr_hi; /* TRB address high 32 bit */ + u32 rsvd2; + u32 rsvd3; + struct usb_ctrlrequest setup_buffer; /* setup data buffer */ +}; + +/* TRB control data structure */ +struct mv_u3d_trb_ctrl { + u32 own:1; /* owner of TRB */ + u32 rsvd1:3; + u32 chain:1; /* associate this TRB with the + next TRB on the Ring */ + u32 ioc:1; /* interrupt on complete */ + u32 rsvd2:4; + u32 type:6; /* TRB type */ +#define TYPE_NORMAL 1 +#define TYPE_DATA 3 +#define TYPE_LINK 6 + u32 dir:1; /* Working at data stage of control endpoint + operation. 0 is OUT and 1 is IN. */ + u32 rsvd3:15; +}; + +/* TRB data structure + * For multiple TRB, all the TRBs' physical address should be continuous. + */ +struct mv_u3d_trb_hw { + u32 buf_addr_lo; /* data buffer address low 32 bit */ + u32 buf_addr_hi; /* data buffer address high 32 bit */ + u32 trb_len; /* transfer length */ + struct mv_u3d_trb_ctrl ctrl; /* TRB control data */ +}; + +/* TRB structure */ +struct mv_u3d_trb { + struct mv_u3d_trb_hw *trb_hw; /* point to the trb_hw structure */ + dma_addr_t trb_dma; /* dma address for this trb_hw */ + struct list_head trb_list; /* trb list */ +}; + +/* device data structure */ +struct mv_u3d { + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + spinlock_t lock; /* device lock */ + struct completion *done; + struct device *dev; + int irq; + + /* usb controller registers */ + struct mv_u3d_cap_regs __iomem *cap_regs; + struct mv_u3d_op_regs __iomem *op_regs; + struct mv_u3d_vuc_regs __iomem *vuc_regs; + void __iomem *phy_regs; + + unsigned int max_eps; + struct mv_u3d_ep_context *ep_context; + size_t ep_context_size; + dma_addr_t ep_context_dma; + + struct dma_pool *trb_pool; /* for TRB data structure */ + struct mv_u3d_ep *eps; + + struct mv_u3d_req *status_req; /* ep0 status request */ + struct usb_ctrlrequest local_setup_buff; /* store setup data*/ + + unsigned int resume_state; /* USB state to resume */ + unsigned int usb_state; /* USB current state */ + unsigned int ep0_state; /* Endpoint zero state */ + unsigned int ep0_dir; + + unsigned int dev_addr; /* device address */ + + unsigned int errors; + + unsigned softconnect:1; + unsigned vbus_active:1; /* vbus is active or not */ + unsigned remote_wakeup:1; /* support remote wakeup */ + unsigned clock_gating:1; /* clock gating or not */ + unsigned active:1; /* udc is active or not */ + unsigned vbus_valid_detect:1; /* udc vbus detection */ + + struct mv_usb_addon_irq *vbus; + unsigned int power; + + struct clk *clk; +}; + +/* endpoint data structure */ +struct mv_u3d_ep { + struct usb_ep ep; + struct mv_u3d *u3d; + struct list_head queue; /* ep request queued hardware */ + struct list_head req_list; /* list of ep request */ + struct mv_u3d_ep_context *ep_context; /* ep context */ + u32 direction; + char name[14]; + u32 processing; /* there is ep request + queued on haredware */ + spinlock_t req_lock; /* ep lock */ + unsigned wedge:1; + unsigned enabled:1; + unsigned ep_type:2; + unsigned ep_num:8; +}; + +/* request data structure */ +struct mv_u3d_req { + struct usb_request req; + struct mv_u3d_ep *ep; + struct list_head queue; /* ep requst queued on hardware */ + struct list_head list; /* ep request list */ + struct list_head trb_list; /* trb list of a request */ + + struct mv_u3d_trb *trb_head; /* point to first trb of a request */ + unsigned trb_count; /* TRB number in the chain */ + unsigned chain; /* TRB chain or not */ +}; + +#endif diff --git a/drivers/usb/gadget/mv_u3d_core.c b/drivers/usb/gadget/mv_u3d_core.c new file mode 100644 index 00000000000..16248711c15 --- /dev/null +++ b/drivers/usb/gadget/mv_u3d_core.c @@ -0,0 +1,2070 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/timer.h> +#include <linux/list.h> +#include <linux/notifier.h> +#include <linux/interrupt.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/pm.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/platform_device.h> +#include <linux/platform_data/mv_usb.h> +#include <linux/clk.h> + +#include "mv_u3d.h" + +#define DRIVER_DESC "Marvell PXA USB3.0 Device Controller driver" + +static const char driver_name[] = "mv_u3d"; +static const char driver_desc[] = DRIVER_DESC; + +static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status); +static void mv_u3d_stop_activity(struct mv_u3d *u3d, + struct usb_gadget_driver *driver); + +/* for endpoint 0 operations */ +static const struct usb_endpoint_descriptor mv_u3d_ep0_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0, + .bmAttributes = USB_ENDPOINT_XFER_CONTROL, + .wMaxPacketSize = MV_U3D_EP0_MAX_PKT_SIZE, +}; + +static void mv_u3d_ep0_reset(struct mv_u3d *u3d) +{ + struct mv_u3d_ep *ep; + u32 epxcr; + int i; + + for (i = 0; i < 2; i++) { + ep = &u3d->eps[i]; + ep->u3d = u3d; + + /* ep0 ep context, ep0 in and out share the same ep context */ + ep->ep_context = &u3d->ep_context[1]; + } + + /* reset ep state machine */ + /* reset ep0 out */ + epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0); + + epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE + << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | MV_U3D_EPXCR_EP_TYPE_CONTROL); + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr1); + + /* reset ep0 in */ + epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0); + + epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE + << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | MV_U3D_EPXCR_EP_TYPE_CONTROL); + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr1); +} + +static void mv_u3d_ep0_stall(struct mv_u3d *u3d) +{ + u32 tmp; + dev_dbg(u3d->dev, "%s\n", __func__); + + /* set TX and RX to stall */ + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); + tmp |= MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); + + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); + tmp |= MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); + + /* update ep0 state */ + u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; +} + +static int mv_u3d_process_ep_req(struct mv_u3d *u3d, int index, + struct mv_u3d_req *curr_req) +{ + struct mv_u3d_trb *curr_trb; + dma_addr_t cur_deq_lo; + struct mv_u3d_ep_context *curr_ep_context; + int trb_complete, actual, remaining_length = 0; + int direction, ep_num; + int retval = 0; + u32 tmp, status, length; + + curr_ep_context = &u3d->ep_context[index]; + direction = index % 2; + ep_num = index / 2; + + trb_complete = 0; + actual = curr_req->req.length; + + while (!list_empty(&curr_req->trb_list)) { + curr_trb = list_entry(curr_req->trb_list.next, + struct mv_u3d_trb, trb_list); + if (!curr_trb->trb_hw->ctrl.own) { + dev_err(u3d->dev, "%s, TRB own error!\n", + u3d->eps[index].name); + return 1; + } + + curr_trb->trb_hw->ctrl.own = 0; + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->rxst[ep_num].statuslo); + cur_deq_lo = + ioread32(&u3d->vuc_regs->rxst[ep_num].curdeqlo); + } else { + tmp = ioread32(&u3d->vuc_regs->txst[ep_num].statuslo); + cur_deq_lo = + ioread32(&u3d->vuc_regs->txst[ep_num].curdeqlo); + } + + status = tmp >> MV_U3D_XFERSTATUS_COMPLETE_SHIFT; + length = tmp & MV_U3D_XFERSTATUS_TRB_LENGTH_MASK; + + if (status == MV_U3D_COMPLETE_SUCCESS || + (status == MV_U3D_COMPLETE_SHORT_PACKET && + direction == MV_U3D_EP_DIR_OUT)) { + remaining_length += length; + actual -= remaining_length; + } else { + dev_err(u3d->dev, + "complete_tr error: ep=%d %s: error = 0x%x\n", + index >> 1, direction ? "SEND" : "RECV", + status); + retval = -EPROTO; + } + + list_del_init(&curr_trb->trb_list); + } + if (retval) + return retval; + + curr_req->req.actual = actual; + return 0; +} + +/* + * mv_u3d_done() - retire a request; caller blocked irqs + * @status : request status to be set, only works when + * request is still in progress. + */ +static +void mv_u3d_done(struct mv_u3d_ep *ep, struct mv_u3d_req *req, int status) + __releases(&ep->udc->lock) + __acquires(&ep->udc->lock) +{ + struct mv_u3d *u3d = (struct mv_u3d *)ep->u3d; + + dev_dbg(u3d->dev, "mv_u3d_done: remove req->queue\n"); + /* Removed the req from ep queue */ + list_del_init(&req->queue); + + /* req.status should be set as -EINPROGRESS in ep_queue() */ + if (req->req.status == -EINPROGRESS) + req->req.status = status; + else + status = req->req.status; + + /* Free trb for the request */ + if (!req->chain) + dma_pool_free(u3d->trb_pool, + req->trb_head->trb_hw, req->trb_head->trb_dma); + else { + dma_unmap_single(ep->u3d->gadget.dev.parent, + (dma_addr_t)req->trb_head->trb_dma, + req->trb_count * sizeof(struct mv_u3d_trb_hw), + DMA_BIDIRECTIONAL); + kfree(req->trb_head->trb_hw); + } + kfree(req->trb_head); + + usb_gadget_unmap_request(&u3d->gadget, &req->req, mv_u3d_ep_dir(ep)); + + if (status && (status != -ESHUTDOWN)) { + dev_dbg(u3d->dev, "complete %s req %p stat %d len %u/%u", + ep->ep.name, &req->req, status, + req->req.actual, req->req.length); + } + + spin_unlock(&ep->u3d->lock); + /* + * complete() is from gadget layer, + * eg fsg->bulk_in_complete() + */ + if (req->req.complete) + req->req.complete(&ep->ep, &req->req); + + spin_lock(&ep->u3d->lock); +} + +static int mv_u3d_queue_trb(struct mv_u3d_ep *ep, struct mv_u3d_req *req) +{ + u32 tmp, direction; + struct mv_u3d *u3d; + struct mv_u3d_ep_context *ep_context; + int retval = 0; + + u3d = ep->u3d; + direction = mv_u3d_ep_dir(ep); + + /* ep0 in and out share the same ep context slot 1*/ + if (ep->ep_num == 0) + ep_context = &(u3d->ep_context[1]); + else + ep_context = &(u3d->ep_context[ep->ep_num * 2 + direction]); + + /* check if the pipe is empty or not */ + if (!list_empty(&ep->queue)) { + dev_err(u3d->dev, "add trb to non-empty queue!\n"); + retval = -ENOMEM; + WARN_ON(1); + } else { + ep_context->rsvd0 = cpu_to_le32(1); + ep_context->rsvd1 = 0; + + /* Configure the trb address and set the DCS bit. + * Both DCS bit and own bit in trb should be set. + */ + ep_context->trb_addr_lo = + cpu_to_le32(req->trb_head->trb_dma | DCS_ENABLE); + ep_context->trb_addr_hi = 0; + + /* Ensure that updates to the EP Context will + * occure before Ring Bell. + */ + wmb(); + + /* ring bell the ep */ + if (ep->ep_num == 0) + tmp = 0x1; + else + tmp = ep->ep_num * 2 + + ((direction == MV_U3D_EP_DIR_OUT) ? 0 : 1); + + iowrite32(tmp, &u3d->op_regs->doorbell); + } + return retval; +} + +static struct mv_u3d_trb *mv_u3d_build_trb_one(struct mv_u3d_req *req, + unsigned *length, dma_addr_t *dma) +{ + u32 temp; + unsigned int direction; + struct mv_u3d_trb *trb; + struct mv_u3d_trb_hw *trb_hw; + struct mv_u3d *u3d; + + /* how big will this transfer be? */ + *length = req->req.length - req->req.actual; + BUG_ON(*length > (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER); + + u3d = req->ep->u3d; + + trb = kzalloc(sizeof(*trb), GFP_ATOMIC); + if (!trb) + return NULL; + + /* + * Be careful that no _GFP_HIGHMEM is set, + * or we can not use dma_to_virt + * cannot use GFP_KERNEL in spin lock + */ + trb_hw = dma_pool_alloc(u3d->trb_pool, GFP_ATOMIC, dma); + if (!trb_hw) { + kfree(trb); + dev_err(u3d->dev, + "%s, dma_pool_alloc fail\n", __func__); + return NULL; + } + trb->trb_dma = *dma; + trb->trb_hw = trb_hw; + + /* initialize buffer page pointers */ + temp = (u32)(req->req.dma + req->req.actual); + + trb_hw->buf_addr_lo = cpu_to_le32(temp); + trb_hw->buf_addr_hi = 0; + trb_hw->trb_len = cpu_to_le32(*length); + trb_hw->ctrl.own = 1; + + if (req->ep->ep_num == 0) + trb_hw->ctrl.type = TYPE_DATA; + else + trb_hw->ctrl.type = TYPE_NORMAL; + + req->req.actual += *length; + + direction = mv_u3d_ep_dir(req->ep); + if (direction == MV_U3D_EP_DIR_IN) + trb_hw->ctrl.dir = 1; + else + trb_hw->ctrl.dir = 0; + + /* Enable interrupt for the last trb of a request */ + if (!req->req.no_interrupt) + trb_hw->ctrl.ioc = 1; + + trb_hw->ctrl.chain = 0; + + wmb(); + return trb; +} + +static int mv_u3d_build_trb_chain(struct mv_u3d_req *req, unsigned *length, + struct mv_u3d_trb *trb, int *is_last) +{ + u32 temp; + unsigned int direction; + struct mv_u3d *u3d; + + /* how big will this transfer be? */ + *length = min(req->req.length - req->req.actual, + (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER); + + u3d = req->ep->u3d; + + trb->trb_dma = 0; + + /* initialize buffer page pointers */ + temp = (u32)(req->req.dma + req->req.actual); + + trb->trb_hw->buf_addr_lo = cpu_to_le32(temp); + trb->trb_hw->buf_addr_hi = 0; + trb->trb_hw->trb_len = cpu_to_le32(*length); + trb->trb_hw->ctrl.own = 1; + + if (req->ep->ep_num == 0) + trb->trb_hw->ctrl.type = TYPE_DATA; + else + trb->trb_hw->ctrl.type = TYPE_NORMAL; + + req->req.actual += *length; + + direction = mv_u3d_ep_dir(req->ep); + if (direction == MV_U3D_EP_DIR_IN) + trb->trb_hw->ctrl.dir = 1; + else + trb->trb_hw->ctrl.dir = 0; + + /* zlp is needed if req->req.zero is set */ + if (req->req.zero) { + if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) + *is_last = 1; + else + *is_last = 0; + } else if (req->req.length == req->req.actual) + *is_last = 1; + else + *is_last = 0; + + /* Enable interrupt for the last trb of a request */ + if (*is_last && !req->req.no_interrupt) + trb->trb_hw->ctrl.ioc = 1; + + if (*is_last) + trb->trb_hw->ctrl.chain = 0; + else { + trb->trb_hw->ctrl.chain = 1; + dev_dbg(u3d->dev, "chain trb\n"); + } + + wmb(); + + return 0; +} + +/* generate TRB linked list for a request + * usb controller only supports continous trb chain, + * that trb structure physical address should be continous. + */ +static int mv_u3d_req_to_trb(struct mv_u3d_req *req) +{ + unsigned count; + int is_last; + struct mv_u3d_trb *trb; + struct mv_u3d_trb_hw *trb_hw; + struct mv_u3d *u3d; + dma_addr_t dma; + unsigned length; + unsigned trb_num; + + u3d = req->ep->u3d; + + INIT_LIST_HEAD(&req->trb_list); + + length = req->req.length - req->req.actual; + /* normally the request transfer length is less than 16KB. + * we use buil_trb_one() to optimize it. + */ + if (length <= (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER) { + trb = mv_u3d_build_trb_one(req, &count, &dma); + list_add_tail(&trb->trb_list, &req->trb_list); + req->trb_head = trb; + req->trb_count = 1; + req->chain = 0; + } else { + trb_num = length / MV_U3D_EP_MAX_LENGTH_TRANSFER; + if (length % MV_U3D_EP_MAX_LENGTH_TRANSFER) + trb_num++; + + trb = kcalloc(trb_num, sizeof(*trb), GFP_ATOMIC); + if (!trb) + return -ENOMEM; + + trb_hw = kcalloc(trb_num, sizeof(*trb_hw), GFP_ATOMIC); + if (!trb_hw) { + kfree(trb); + return -ENOMEM; + } + + do { + trb->trb_hw = trb_hw; + if (mv_u3d_build_trb_chain(req, &count, + trb, &is_last)) { + dev_err(u3d->dev, + "%s, mv_u3d_build_trb_chain fail\n", + __func__); + return -EIO; + } + + list_add_tail(&trb->trb_list, &req->trb_list); + req->trb_count++; + trb++; + trb_hw++; + } while (!is_last); + + req->trb_head = list_entry(req->trb_list.next, + struct mv_u3d_trb, trb_list); + req->trb_head->trb_dma = dma_map_single(u3d->gadget.dev.parent, + req->trb_head->trb_hw, + trb_num * sizeof(*trb_hw), + DMA_BIDIRECTIONAL); + + req->chain = 1; + } + + return 0; +} + +static int +mv_u3d_start_queue(struct mv_u3d_ep *ep) +{ + struct mv_u3d *u3d = ep->u3d; + struct mv_u3d_req *req; + int ret; + + if (!list_empty(&ep->req_list) && !ep->processing) + req = list_entry(ep->req_list.next, struct mv_u3d_req, list); + else + return 0; + + ep->processing = 1; + + /* set up dma mapping */ + ret = usb_gadget_map_request(&u3d->gadget, &req->req, + mv_u3d_ep_dir(ep)); + if (ret) + return ret; + + req->req.status = -EINPROGRESS; + req->req.actual = 0; + req->trb_count = 0; + + /* build trbs and push them to device queue */ + if (!mv_u3d_req_to_trb(req)) { + ret = mv_u3d_queue_trb(ep, req); + if (ret) { + ep->processing = 0; + return ret; + } + } else { + ep->processing = 0; + dev_err(u3d->dev, "%s, mv_u3d_req_to_trb fail\n", __func__); + return -ENOMEM; + } + + /* irq handler advances the queue */ + if (req) + list_add_tail(&req->queue, &ep->queue); + + return 0; +} + +static int mv_u3d_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct mv_u3d *u3d; + struct mv_u3d_ep *ep; + struct mv_u3d_ep_context *ep_context; + u16 max = 0; + unsigned maxburst = 0; + u32 epxcr, direction; + + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + + if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + direction = mv_u3d_ep_dir(ep); + max = le16_to_cpu(desc->wMaxPacketSize); + + if (!_ep->maxburst) + _ep->maxburst = 1; + maxburst = _ep->maxburst; + + /* Get the endpoint context address */ + ep_context = (struct mv_u3d_ep_context *)ep->ep_context; + + /* Set the max burst size */ + switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_BULK: + if (maxburst > 16) { + dev_dbg(u3d->dev, + "max burst should not be greater " + "than 16 on bulk ep\n"); + maxburst = 1; + _ep->maxburst = maxburst; + } + dev_dbg(u3d->dev, + "maxburst: %d on bulk %s\n", maxburst, ep->name); + break; + case USB_ENDPOINT_XFER_CONTROL: + /* control transfer only supports maxburst as one */ + maxburst = 1; + _ep->maxburst = maxburst; + break; + case USB_ENDPOINT_XFER_INT: + if (maxburst != 1) { + dev_dbg(u3d->dev, + "max burst should be 1 on int ep " + "if transfer size is not 1024\n"); + maxburst = 1; + _ep->maxburst = maxburst; + } + break; + case USB_ENDPOINT_XFER_ISOC: + if (maxburst != 1) { + dev_dbg(u3d->dev, + "max burst should be 1 on isoc ep " + "if transfer size is not 1024\n"); + maxburst = 1; + _ep->maxburst = maxburst; + } + break; + default: + goto en_done; + } + + ep->ep.maxpacket = max; + ep->ep.desc = desc; + ep->enabled = 1; + + /* Enable the endpoint for Rx or Tx and set the endpoint type */ + if (direction == MV_U3D_EP_DIR_OUT) { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + + epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); + } else { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + + epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1); + } + + return 0; +en_done: + return -EINVAL; +} + +static int mv_u3d_ep_disable(struct usb_ep *_ep) +{ + struct mv_u3d *u3d; + struct mv_u3d_ep *ep; + struct mv_u3d_ep_context *ep_context; + u32 epxcr, direction; + unsigned long flags; + + if (!_ep) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + if (!ep->ep.desc) + return -EINVAL; + + u3d = ep->u3d; + + /* Get the endpoint context address */ + ep_context = ep->ep_context; + + direction = mv_u3d_ep_dir(ep); + + /* nuke all pending requests (does flush) */ + spin_lock_irqsave(&u3d->lock, flags); + mv_u3d_nuke(ep, -ESHUTDOWN); + spin_unlock_irqrestore(&u3d->lock, flags); + + /* Disable the endpoint for Rx or Tx and reset the endpoint type */ + if (direction == MV_U3D_EP_DIR_OUT) { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); + epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | USB_ENDPOINT_XFERTYPE_MASK); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); + } else { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr1); + epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | USB_ENDPOINT_XFERTYPE_MASK); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1); + } + + ep->enabled = 0; + + ep->ep.desc = NULL; + return 0; +} + +static struct usb_request * +mv_u3d_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) +{ + struct mv_u3d_req *req = NULL; + + req = kzalloc(sizeof *req, gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +static void mv_u3d_free_request(struct usb_ep *_ep, struct usb_request *_req) +{ + struct mv_u3d_req *req = container_of(_req, struct mv_u3d_req, req); + + kfree(req); +} + +static void mv_u3d_ep_fifo_flush(struct usb_ep *_ep) +{ + struct mv_u3d *u3d; + u32 direction; + struct mv_u3d_ep *ep = container_of(_ep, struct mv_u3d_ep, ep); + unsigned int loops; + u32 tmp; + + /* if endpoint is not enabled, cannot flush endpoint */ + if (!ep->enabled) + return; + + u3d = ep->u3d; + direction = mv_u3d_ep_dir(ep); + + /* ep0 need clear bit after flushing fifo. */ + if (!ep->ep_num) { + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); + udelay(10); + tmp &= ~MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); + } else { + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); + udelay(10); + tmp &= ~MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); + } + return; + } + + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + + /* Wait until flushing completed */ + loops = LOOPS(MV_U3D_FLUSH_TIMEOUT); + while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0) & + MV_U3D_EPXCR_EP_FLUSH) { + /* + * EP_FLUSH bit should be cleared to indicate this + * operation is complete + */ + if (loops == 0) { + dev_dbg(u3d->dev, + "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num, + direction ? "in" : "out"); + return; + } + loops--; + udelay(LOOPS_USEC); + } + } else { /* EP_DIR_IN */ + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + + /* Wait until flushing completed */ + loops = LOOPS(MV_U3D_FLUSH_TIMEOUT); + while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0) & + MV_U3D_EPXCR_EP_FLUSH) { + /* + * EP_FLUSH bit should be cleared to indicate this + * operation is complete + */ + if (loops == 0) { + dev_dbg(u3d->dev, + "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num, + direction ? "in" : "out"); + return; + } + loops--; + udelay(LOOPS_USEC); + } + } +} + +/* queues (submits) an I/O request to an endpoint */ +static int +mv_u3d_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) +{ + struct mv_u3d_ep *ep; + struct mv_u3d_req *req; + struct mv_u3d *u3d; + unsigned long flags; + int is_first_req = 0; + + if (unlikely(!_ep || !_req)) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + + req = container_of(_req, struct mv_u3d_req, req); + + if (!ep->ep_num + && u3d->ep0_state == MV_U3D_STATUS_STAGE + && !_req->length) { + dev_dbg(u3d->dev, "ep0 status stage\n"); + u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; + return 0; + } + + dev_dbg(u3d->dev, "%s: %s, req: 0x%p\n", + __func__, _ep->name, req); + + /* catch various bogus parameters */ + if (!req->req.complete || !req->req.buf + || !list_empty(&req->queue)) { + dev_err(u3d->dev, + "%s, bad params, _req: 0x%p," + "req->req.complete: 0x%p, req->req.buf: 0x%p," + "list_empty: 0x%x\n", + __func__, _req, + req->req.complete, req->req.buf, + list_empty(&req->queue)); + return -EINVAL; + } + if (unlikely(!ep->ep.desc)) { + dev_err(u3d->dev, "%s, bad ep\n", __func__); + return -EINVAL; + } + if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + if (req->req.length > ep->ep.maxpacket) + return -EMSGSIZE; + } + + if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) { + dev_err(u3d->dev, + "bad params of driver/speed\n"); + return -ESHUTDOWN; + } + + req->ep = ep; + + /* Software list handles usb request. */ + spin_lock_irqsave(&ep->req_lock, flags); + is_first_req = list_empty(&ep->req_list); + list_add_tail(&req->list, &ep->req_list); + spin_unlock_irqrestore(&ep->req_lock, flags); + if (!is_first_req) { + dev_dbg(u3d->dev, "list is not empty\n"); + return 0; + } + + dev_dbg(u3d->dev, "call mv_u3d_start_queue from usb_ep_queue\n"); + spin_lock_irqsave(&u3d->lock, flags); + mv_u3d_start_queue(ep); + spin_unlock_irqrestore(&u3d->lock, flags); + return 0; +} + +/* dequeues (cancels, unlinks) an I/O request from an endpoint */ +static int mv_u3d_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct mv_u3d_ep *ep; + struct mv_u3d_req *req; + struct mv_u3d *u3d; + struct mv_u3d_ep_context *ep_context; + struct mv_u3d_req *next_req; + + unsigned long flags; + int ret = 0; + + if (!_ep || !_req) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + + spin_lock_irqsave(&ep->u3d->lock, flags); + + /* make sure it's actually queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + if (&req->req != _req) { + ret = -EINVAL; + goto out; + } + + /* The request is in progress, or completed but not dequeued */ + if (ep->queue.next == &req->queue) { + _req->status = -ECONNRESET; + mv_u3d_ep_fifo_flush(_ep); + + /* The request isn't the last request in this ep queue */ + if (req->queue.next != &ep->queue) { + dev_dbg(u3d->dev, + "it is the last request in this ep queue\n"); + ep_context = ep->ep_context; + next_req = list_entry(req->queue.next, + struct mv_u3d_req, queue); + + /* Point first TRB of next request to the EP context. */ + iowrite32((unsigned long) next_req->trb_head, + &ep_context->trb_addr_lo); + } else { + struct mv_u3d_ep_context *ep_context; + ep_context = ep->ep_context; + ep_context->trb_addr_lo = 0; + ep_context->trb_addr_hi = 0; + } + + } else + WARN_ON(1); + + mv_u3d_done(ep, req, -ECONNRESET); + + /* remove the req from the ep req list */ + if (!list_empty(&ep->req_list)) { + struct mv_u3d_req *curr_req; + curr_req = list_entry(ep->req_list.next, + struct mv_u3d_req, list); + if (curr_req == req) { + list_del_init(&req->list); + ep->processing = 0; + } + } + +out: + spin_unlock_irqrestore(&ep->u3d->lock, flags); + return ret; +} + +static void +mv_u3d_ep_set_stall(struct mv_u3d *u3d, u8 ep_num, u8 direction, int stall) +{ + u32 tmp; + struct mv_u3d_ep *ep = u3d->eps; + + dev_dbg(u3d->dev, "%s\n", __func__); + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + if (stall) + tmp |= MV_U3D_EPXCR_EP_HALT; + else + tmp &= ~MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + } else { + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + if (stall) + tmp |= MV_U3D_EPXCR_EP_HALT; + else + tmp &= ~MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + } +} + +static int mv_u3d_ep_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) +{ + struct mv_u3d_ep *ep; + unsigned long flags = 0; + int status = 0; + struct mv_u3d *u3d; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + if (!ep->ep.desc) { + status = -EINVAL; + goto out; + } + + if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + status = -EOPNOTSUPP; + goto out; + } + + /* + * Attempt to halt IN ep will fail if any transfer requests + * are still queue + */ + if (halt && (mv_u3d_ep_dir(ep) == MV_U3D_EP_DIR_IN) + && !list_empty(&ep->queue)) { + status = -EAGAIN; + goto out; + } + + spin_lock_irqsave(&ep->u3d->lock, flags); + mv_u3d_ep_set_stall(u3d, ep->ep_num, mv_u3d_ep_dir(ep), halt); + if (halt && wedge) + ep->wedge = 1; + else if (!halt) + ep->wedge = 0; + spin_unlock_irqrestore(&ep->u3d->lock, flags); + + if (ep->ep_num == 0) + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; +out: + return status; +} + +static int mv_u3d_ep_set_halt(struct usb_ep *_ep, int halt) +{ + return mv_u3d_ep_set_halt_wedge(_ep, halt, 0); +} + +static int mv_u3d_ep_set_wedge(struct usb_ep *_ep) +{ + return mv_u3d_ep_set_halt_wedge(_ep, 1, 1); +} + +static struct usb_ep_ops mv_u3d_ep_ops = { + .enable = mv_u3d_ep_enable, + .disable = mv_u3d_ep_disable, + + .alloc_request = mv_u3d_alloc_request, + .free_request = mv_u3d_free_request, + + .queue = mv_u3d_ep_queue, + .dequeue = mv_u3d_ep_dequeue, + + .set_wedge = mv_u3d_ep_set_wedge, + .set_halt = mv_u3d_ep_set_halt, + .fifo_flush = mv_u3d_ep_fifo_flush, +}; + +static void mv_u3d_controller_stop(struct mv_u3d *u3d) +{ + u32 tmp; + + if (!u3d->clock_gating && u3d->vbus_valid_detect) + iowrite32(MV_U3D_INTR_ENABLE_VBUS_VALID, + &u3d->vuc_regs->intrenable); + else + iowrite32(0, &u3d->vuc_regs->intrenable); + iowrite32(~0x0, &u3d->vuc_regs->endcomplete); + iowrite32(~0x0, &u3d->vuc_regs->trbunderrun); + iowrite32(~0x0, &u3d->vuc_regs->trbcomplete); + iowrite32(~0x0, &u3d->vuc_regs->linkchange); + iowrite32(0x1, &u3d->vuc_regs->setuplock); + + /* Reset the RUN bit in the command register to stop USB */ + tmp = ioread32(&u3d->op_regs->usbcmd); + tmp &= ~MV_U3D_CMD_RUN_STOP; + iowrite32(tmp, &u3d->op_regs->usbcmd); + dev_dbg(u3d->dev, "after u3d_stop, USBCMD 0x%x\n", + ioread32(&u3d->op_regs->usbcmd)); +} + +static void mv_u3d_controller_start(struct mv_u3d *u3d) +{ + u32 usbintr; + u32 temp; + + /* enable link LTSSM state machine */ + temp = ioread32(&u3d->vuc_regs->ltssm); + temp |= MV_U3D_LTSSM_PHY_INIT_DONE; + iowrite32(temp, &u3d->vuc_regs->ltssm); + + /* Enable interrupts */ + usbintr = MV_U3D_INTR_ENABLE_LINK_CHG | MV_U3D_INTR_ENABLE_TXDESC_ERR | + MV_U3D_INTR_ENABLE_RXDESC_ERR | MV_U3D_INTR_ENABLE_TX_COMPLETE | + MV_U3D_INTR_ENABLE_RX_COMPLETE | MV_U3D_INTR_ENABLE_SETUP | + (u3d->vbus_valid_detect ? MV_U3D_INTR_ENABLE_VBUS_VALID : 0); + iowrite32(usbintr, &u3d->vuc_regs->intrenable); + + /* Enable ctrl ep */ + iowrite32(0x1, &u3d->vuc_regs->ctrlepenable); + + /* Set the Run bit in the command register */ + iowrite32(MV_U3D_CMD_RUN_STOP, &u3d->op_regs->usbcmd); + dev_dbg(u3d->dev, "after u3d_start, USBCMD 0x%x\n", + ioread32(&u3d->op_regs->usbcmd)); +} + +static int mv_u3d_controller_reset(struct mv_u3d *u3d) +{ + unsigned int loops; + u32 tmp; + + /* Stop the controller */ + tmp = ioread32(&u3d->op_regs->usbcmd); + tmp &= ~MV_U3D_CMD_RUN_STOP; + iowrite32(tmp, &u3d->op_regs->usbcmd); + + /* Reset the controller to get default values */ + iowrite32(MV_U3D_CMD_CTRL_RESET, &u3d->op_regs->usbcmd); + + /* wait for reset to complete */ + loops = LOOPS(MV_U3D_RESET_TIMEOUT); + while (ioread32(&u3d->op_regs->usbcmd) & MV_U3D_CMD_CTRL_RESET) { + if (loops == 0) { + dev_err(u3d->dev, + "Wait for RESET completed TIMEOUT\n"); + return -ETIMEDOUT; + } + loops--; + udelay(LOOPS_USEC); + } + + /* Configure the Endpoint Context Address */ + iowrite32(u3d->ep_context_dma, &u3d->op_regs->dcbaapl); + iowrite32(0, &u3d->op_regs->dcbaaph); + + return 0; +} + +static int mv_u3d_enable(struct mv_u3d *u3d) +{ + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); + int retval; + + if (u3d->active) + return 0; + + if (!u3d->clock_gating) { + u3d->active = 1; + return 0; + } + + dev_dbg(u3d->dev, "enable u3d\n"); + clk_enable(u3d->clk); + if (pdata->phy_init) { + retval = pdata->phy_init(u3d->phy_regs); + if (retval) { + dev_err(u3d->dev, + "init phy error %d\n", retval); + clk_disable(u3d->clk); + return retval; + } + } + u3d->active = 1; + + return 0; +} + +static void mv_u3d_disable(struct mv_u3d *u3d) +{ + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); + if (u3d->clock_gating && u3d->active) { + dev_dbg(u3d->dev, "disable u3d\n"); + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); + u3d->active = 0; + } +} + +static int mv_u3d_vbus_session(struct usb_gadget *gadget, int is_active) +{ + struct mv_u3d *u3d; + unsigned long flags; + int retval = 0; + + u3d = container_of(gadget, struct mv_u3d, gadget); + + spin_lock_irqsave(&u3d->lock, flags); + + u3d->vbus_active = (is_active != 0); + dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n", + __func__, u3d->softconnect, u3d->vbus_active); + /* + * 1. external VBUS detect: we can disable/enable clock on demand. + * 2. UDC VBUS detect: we have to enable clock all the time. + * 3. No VBUS detect: we have to enable clock all the time. + */ + if (u3d->driver && u3d->softconnect && u3d->vbus_active) { + retval = mv_u3d_enable(u3d); + if (retval == 0) { + /* + * after clock is disabled, we lost all the register + * context. We have to re-init registers + */ + mv_u3d_controller_reset(u3d); + mv_u3d_ep0_reset(u3d); + mv_u3d_controller_start(u3d); + } + } else if (u3d->driver && u3d->softconnect) { + if (!u3d->active) + goto out; + + /* stop all the transfer in queue*/ + mv_u3d_stop_activity(u3d, u3d->driver); + mv_u3d_controller_stop(u3d); + mv_u3d_disable(u3d); + } + +out: + spin_unlock_irqrestore(&u3d->lock, flags); + return retval; +} + +/* constrain controller's VBUS power usage + * This call is used by gadget drivers during SET_CONFIGURATION calls, + * reporting how much power the device may consume. For example, this + * could affect how quickly batteries are recharged. + * + * Returns zero on success, else negative errno. + */ +static int mv_u3d_vbus_draw(struct usb_gadget *gadget, unsigned mA) +{ + struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget); + + u3d->power = mA; + + return 0; +} + +static int mv_u3d_pullup(struct usb_gadget *gadget, int is_on) +{ + struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget); + unsigned long flags; + int retval = 0; + + spin_lock_irqsave(&u3d->lock, flags); + + dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n", + __func__, u3d->softconnect, u3d->vbus_active); + u3d->softconnect = (is_on != 0); + if (u3d->driver && u3d->softconnect && u3d->vbus_active) { + retval = mv_u3d_enable(u3d); + if (retval == 0) { + /* + * after clock is disabled, we lost all the register + * context. We have to re-init registers + */ + mv_u3d_controller_reset(u3d); + mv_u3d_ep0_reset(u3d); + mv_u3d_controller_start(u3d); + } + } else if (u3d->driver && u3d->vbus_active) { + /* stop all the transfer in queue*/ + mv_u3d_stop_activity(u3d, u3d->driver); + mv_u3d_controller_stop(u3d); + mv_u3d_disable(u3d); + } + + spin_unlock_irqrestore(&u3d->lock, flags); + + return retval; +} + +static int mv_u3d_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); + unsigned long flags; + + if (u3d->driver) + return -EBUSY; + + spin_lock_irqsave(&u3d->lock, flags); + + if (!u3d->clock_gating) { + clk_enable(u3d->clk); + if (pdata->phy_init) + pdata->phy_init(u3d->phy_regs); + } + + /* hook up the driver ... */ + driver->driver.bus = NULL; + u3d->driver = driver; + + u3d->ep0_dir = USB_DIR_OUT; + + spin_unlock_irqrestore(&u3d->lock, flags); + + u3d->vbus_valid_detect = 1; + + return 0; +} + +static int mv_u3d_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); + unsigned long flags; + + u3d->vbus_valid_detect = 0; + spin_lock_irqsave(&u3d->lock, flags); + + /* enable clock to access controller register */ + clk_enable(u3d->clk); + if (pdata->phy_init) + pdata->phy_init(u3d->phy_regs); + + mv_u3d_controller_stop(u3d); + /* stop all usb activities */ + u3d->gadget.speed = USB_SPEED_UNKNOWN; + mv_u3d_stop_activity(u3d, driver); + mv_u3d_disable(u3d); + + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); + + spin_unlock_irqrestore(&u3d->lock, flags); + + u3d->driver = NULL; + + return 0; +} + +/* device controller usb_gadget_ops structure */ +static const struct usb_gadget_ops mv_u3d_ops = { + /* notify controller that VBUS is powered or not */ + .vbus_session = mv_u3d_vbus_session, + + /* constrain controller's VBUS power usage */ + .vbus_draw = mv_u3d_vbus_draw, + + .pullup = mv_u3d_pullup, + .udc_start = mv_u3d_start, + .udc_stop = mv_u3d_stop, +}; + +static int mv_u3d_eps_init(struct mv_u3d *u3d) +{ + struct mv_u3d_ep *ep; + char name[14]; + int i; + + /* initialize ep0, ep0 in/out use eps[1] */ + ep = &u3d->eps[1]; + ep->u3d = u3d; + strncpy(ep->name, "ep0", sizeof(ep->name)); + ep->ep.name = ep->name; + ep->ep.ops = &mv_u3d_ep_ops; + ep->wedge = 0; + usb_ep_set_maxpacket_limit(&ep->ep, MV_U3D_EP0_MAX_PKT_SIZE); + ep->ep_num = 0; + ep->ep.desc = &mv_u3d_ep0_desc; + INIT_LIST_HEAD(&ep->queue); + INIT_LIST_HEAD(&ep->req_list); + ep->ep_type = USB_ENDPOINT_XFER_CONTROL; + + /* add ep0 ep_context */ + ep->ep_context = &u3d->ep_context[1]; + + /* initialize other endpoints */ + for (i = 2; i < u3d->max_eps * 2; i++) { + ep = &u3d->eps[i]; + if (i & 1) { + snprintf(name, sizeof(name), "ep%din", i >> 1); + ep->direction = MV_U3D_EP_DIR_IN; + } else { + snprintf(name, sizeof(name), "ep%dout", i >> 1); + ep->direction = MV_U3D_EP_DIR_OUT; + } + ep->u3d = u3d; + strncpy(ep->name, name, sizeof(ep->name)); + ep->ep.name = ep->name; + + ep->ep.ops = &mv_u3d_ep_ops; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); + ep->ep_num = i / 2; + + INIT_LIST_HEAD(&ep->queue); + list_add_tail(&ep->ep.ep_list, &u3d->gadget.ep_list); + + INIT_LIST_HEAD(&ep->req_list); + spin_lock_init(&ep->req_lock); + ep->ep_context = &u3d->ep_context[i]; + } + + return 0; +} + +/* delete all endpoint requests, called with spinlock held */ +static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status) +{ + /* endpoint fifo flush */ + mv_u3d_ep_fifo_flush(&ep->ep); + + while (!list_empty(&ep->queue)) { + struct mv_u3d_req *req = NULL; + req = list_entry(ep->queue.next, struct mv_u3d_req, queue); + mv_u3d_done(ep, req, status); + } +} + +/* stop all USB activities */ +static +void mv_u3d_stop_activity(struct mv_u3d *u3d, struct usb_gadget_driver *driver) +{ + struct mv_u3d_ep *ep; + + mv_u3d_nuke(&u3d->eps[1], -ESHUTDOWN); + + list_for_each_entry(ep, &u3d->gadget.ep_list, ep.ep_list) { + mv_u3d_nuke(ep, -ESHUTDOWN); + } + + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&u3d->lock); + driver->disconnect(&u3d->gadget); + spin_lock(&u3d->lock); + } +} + +static void mv_u3d_irq_process_error(struct mv_u3d *u3d) +{ + /* Increment the error count */ + u3d->errors++; + dev_err(u3d->dev, "%s\n", __func__); +} + +static void mv_u3d_irq_process_link_change(struct mv_u3d *u3d) +{ + u32 linkchange; + + linkchange = ioread32(&u3d->vuc_regs->linkchange); + iowrite32(linkchange, &u3d->vuc_regs->linkchange); + + dev_dbg(u3d->dev, "linkchange: 0x%x\n", linkchange); + + if (linkchange & MV_U3D_LINK_CHANGE_LINK_UP) { + dev_dbg(u3d->dev, "link up: ltssm state: 0x%x\n", + ioread32(&u3d->vuc_regs->ltssmstate)); + + u3d->usb_state = USB_STATE_DEFAULT; + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; + u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; + + /* set speed */ + u3d->gadget.speed = USB_SPEED_SUPER; + } + + if (linkchange & MV_U3D_LINK_CHANGE_SUSPEND) { + dev_dbg(u3d->dev, "link suspend\n"); + u3d->resume_state = u3d->usb_state; + u3d->usb_state = USB_STATE_SUSPENDED; + } + + if (linkchange & MV_U3D_LINK_CHANGE_RESUME) { + dev_dbg(u3d->dev, "link resume\n"); + u3d->usb_state = u3d->resume_state; + u3d->resume_state = 0; + } + + if (linkchange & MV_U3D_LINK_CHANGE_WRESET) { + dev_dbg(u3d->dev, "warm reset\n"); + u3d->usb_state = USB_STATE_POWERED; + } + + if (linkchange & MV_U3D_LINK_CHANGE_HRESET) { + dev_dbg(u3d->dev, "hot reset\n"); + u3d->usb_state = USB_STATE_DEFAULT; + } + + if (linkchange & MV_U3D_LINK_CHANGE_INACT) + dev_dbg(u3d->dev, "inactive\n"); + + if (linkchange & MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0) + dev_dbg(u3d->dev, "ss.disabled\n"); + + if (linkchange & MV_U3D_LINK_CHANGE_VBUS_INVALID) { + dev_dbg(u3d->dev, "vbus invalid\n"); + u3d->usb_state = USB_STATE_ATTACHED; + u3d->vbus_valid_detect = 1; + /* if external vbus detect is not supported, + * we handle it here. + */ + if (!u3d->vbus) { + spin_unlock(&u3d->lock); + mv_u3d_vbus_session(&u3d->gadget, 0); + spin_lock(&u3d->lock); + } + } +} + +static void mv_u3d_ch9setaddress(struct mv_u3d *u3d, + struct usb_ctrlrequest *setup) +{ + u32 tmp; + + if (u3d->usb_state != USB_STATE_DEFAULT) { + dev_err(u3d->dev, + "%s, cannot setaddr in this state (%d)\n", + __func__, u3d->usb_state); + goto err; + } + + u3d->dev_addr = (u8)setup->wValue; + + dev_dbg(u3d->dev, "%s: 0x%x\n", __func__, u3d->dev_addr); + + if (u3d->dev_addr > 127) { + dev_err(u3d->dev, + "%s, u3d address is wrong (out of range)\n", __func__); + u3d->dev_addr = 0; + goto err; + } + + /* update usb state */ + u3d->usb_state = USB_STATE_ADDRESS; + + /* set the new address */ + tmp = ioread32(&u3d->vuc_regs->devaddrtiebrkr); + tmp &= ~0x7F; + tmp |= (u32)u3d->dev_addr; + iowrite32(tmp, &u3d->vuc_regs->devaddrtiebrkr); + + return; +err: + mv_u3d_ep0_stall(u3d); +} + +static int mv_u3d_is_set_configuration(struct usb_ctrlrequest *setup) +{ + if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) + if (setup->bRequest == USB_REQ_SET_CONFIGURATION) + return 1; + + return 0; +} + +static void mv_u3d_handle_setup_packet(struct mv_u3d *u3d, u8 ep_num, + struct usb_ctrlrequest *setup) + __releases(&u3c->lock) + __acquires(&u3c->lock) +{ + bool delegate = false; + + mv_u3d_nuke(&u3d->eps[ep_num * 2 + MV_U3D_EP_DIR_IN], -ESHUTDOWN); + + dev_dbg(u3d->dev, "SETUP %02x.%02x v%04x i%04x l%04x\n", + setup->bRequestType, setup->bRequest, + setup->wValue, setup->wIndex, setup->wLength); + + /* We process some stardard setup requests here */ + if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (setup->bRequest) { + case USB_REQ_GET_STATUS: + delegate = true; + break; + + case USB_REQ_SET_ADDRESS: + mv_u3d_ch9setaddress(u3d, setup); + break; + + case USB_REQ_CLEAR_FEATURE: + delegate = true; + break; + + case USB_REQ_SET_FEATURE: + delegate = true; + break; + + default: + delegate = true; + } + } else + delegate = true; + + /* delegate USB standard requests to the gadget driver */ + if (delegate == true) { + /* USB requests handled by gadget */ + if (setup->wLength) { + /* DATA phase from gadget, STATUS phase from u3d */ + u3d->ep0_dir = (setup->bRequestType & USB_DIR_IN) + ? MV_U3D_EP_DIR_IN : MV_U3D_EP_DIR_OUT; + spin_unlock(&u3d->lock); + if (u3d->driver->setup(&u3d->gadget, + &u3d->local_setup_buff) < 0) { + dev_err(u3d->dev, "setup error!\n"); + mv_u3d_ep0_stall(u3d); + } + spin_lock(&u3d->lock); + } else { + /* no DATA phase, STATUS phase from gadget */ + u3d->ep0_dir = MV_U3D_EP_DIR_IN; + u3d->ep0_state = MV_U3D_STATUS_STAGE; + spin_unlock(&u3d->lock); + if (u3d->driver->setup(&u3d->gadget, + &u3d->local_setup_buff) < 0) + mv_u3d_ep0_stall(u3d); + spin_lock(&u3d->lock); + } + + if (mv_u3d_is_set_configuration(setup)) { + dev_dbg(u3d->dev, "u3d configured\n"); + u3d->usb_state = USB_STATE_CONFIGURED; + } + } +} + +static void mv_u3d_get_setup_data(struct mv_u3d *u3d, u8 ep_num, u8 *buffer_ptr) +{ + struct mv_u3d_ep_context *epcontext; + + epcontext = &u3d->ep_context[ep_num * 2 + MV_U3D_EP_DIR_IN]; + + /* Copy the setup packet to local buffer */ + memcpy(buffer_ptr, (u8 *) &epcontext->setup_buffer, 8); +} + +static void mv_u3d_irq_process_setup(struct mv_u3d *u3d) +{ + u32 tmp, i; + /* Process all Setup packet received interrupts */ + tmp = ioread32(&u3d->vuc_regs->setuplock); + if (tmp) { + for (i = 0; i < u3d->max_eps; i++) { + if (tmp & (1 << i)) { + mv_u3d_get_setup_data(u3d, i, + (u8 *)(&u3d->local_setup_buff)); + mv_u3d_handle_setup_packet(u3d, i, + &u3d->local_setup_buff); + } + } + } + + iowrite32(tmp, &u3d->vuc_regs->setuplock); +} + +static void mv_u3d_irq_process_tr_complete(struct mv_u3d *u3d) +{ + u32 tmp, bit_pos; + int i, ep_num = 0, direction = 0; + struct mv_u3d_ep *curr_ep; + struct mv_u3d_req *curr_req, *temp_req; + int status; + + tmp = ioread32(&u3d->vuc_regs->endcomplete); + + dev_dbg(u3d->dev, "tr_complete: ep: 0x%x\n", tmp); + if (!tmp) + return; + iowrite32(tmp, &u3d->vuc_regs->endcomplete); + + for (i = 0; i < u3d->max_eps * 2; i++) { + ep_num = i >> 1; + direction = i % 2; + + bit_pos = 1 << (ep_num + 16 * direction); + + if (!(bit_pos & tmp)) + continue; + + if (i == 0) + curr_ep = &u3d->eps[1]; + else + curr_ep = &u3d->eps[i]; + + /* remove req out of ep request list after completion */ + dev_dbg(u3d->dev, "tr comp: check req_list\n"); + spin_lock(&curr_ep->req_lock); + if (!list_empty(&curr_ep->req_list)) { + struct mv_u3d_req *req; + req = list_entry(curr_ep->req_list.next, + struct mv_u3d_req, list); + list_del_init(&req->list); + curr_ep->processing = 0; + } + spin_unlock(&curr_ep->req_lock); + + /* process the req queue until an uncomplete request */ + list_for_each_entry_safe(curr_req, temp_req, + &curr_ep->queue, queue) { + status = mv_u3d_process_ep_req(u3d, i, curr_req); + if (status) + break; + /* write back status to req */ + curr_req->req.status = status; + + /* ep0 request completion */ + if (ep_num == 0) { + mv_u3d_done(curr_ep, curr_req, 0); + break; + } else { + mv_u3d_done(curr_ep, curr_req, status); + } + } + + dev_dbg(u3d->dev, "call mv_u3d_start_queue from ep complete\n"); + mv_u3d_start_queue(curr_ep); + } +} + +static irqreturn_t mv_u3d_irq(int irq, void *dev) +{ + struct mv_u3d *u3d = (struct mv_u3d *)dev; + u32 status, intr; + u32 bridgesetting; + u32 trbunderrun; + + spin_lock(&u3d->lock); + + status = ioread32(&u3d->vuc_regs->intrcause); + intr = ioread32(&u3d->vuc_regs->intrenable); + status &= intr; + + if (status == 0) { + spin_unlock(&u3d->lock); + dev_err(u3d->dev, "irq error!\n"); + return IRQ_NONE; + } + + if (status & MV_U3D_USBINT_VBUS_VALID) { + bridgesetting = ioread32(&u3d->vuc_regs->bridgesetting); + if (bridgesetting & MV_U3D_BRIDGE_SETTING_VBUS_VALID) { + /* write vbus valid bit of bridge setting to clear */ + bridgesetting = MV_U3D_BRIDGE_SETTING_VBUS_VALID; + iowrite32(bridgesetting, &u3d->vuc_regs->bridgesetting); + dev_dbg(u3d->dev, "vbus valid\n"); + + u3d->usb_state = USB_STATE_POWERED; + u3d->vbus_valid_detect = 0; + /* if external vbus detect is not supported, + * we handle it here. + */ + if (!u3d->vbus) { + spin_unlock(&u3d->lock); + mv_u3d_vbus_session(&u3d->gadget, 1); + spin_lock(&u3d->lock); + } + } else + dev_err(u3d->dev, "vbus bit is not set\n"); + } + + /* RX data is already in the 16KB FIFO.*/ + if (status & MV_U3D_USBINT_UNDER_RUN) { + trbunderrun = ioread32(&u3d->vuc_regs->trbunderrun); + dev_err(u3d->dev, "under run, ep%d\n", trbunderrun); + iowrite32(trbunderrun, &u3d->vuc_regs->trbunderrun); + mv_u3d_irq_process_error(u3d); + } + + if (status & (MV_U3D_USBINT_RXDESC_ERR | MV_U3D_USBINT_TXDESC_ERR)) { + /* write one to clear */ + iowrite32(status & (MV_U3D_USBINT_RXDESC_ERR + | MV_U3D_USBINT_TXDESC_ERR), + &u3d->vuc_regs->intrcause); + dev_err(u3d->dev, "desc err 0x%x\n", status); + mv_u3d_irq_process_error(u3d); + } + + if (status & MV_U3D_USBINT_LINK_CHG) + mv_u3d_irq_process_link_change(u3d); + + if (status & MV_U3D_USBINT_TX_COMPLETE) + mv_u3d_irq_process_tr_complete(u3d); + + if (status & MV_U3D_USBINT_RX_COMPLETE) + mv_u3d_irq_process_tr_complete(u3d); + + if (status & MV_U3D_USBINT_SETUP) + mv_u3d_irq_process_setup(u3d); + + spin_unlock(&u3d->lock); + return IRQ_HANDLED; +} + +static int mv_u3d_remove(struct platform_device *dev) +{ + struct mv_u3d *u3d = platform_get_drvdata(dev); + + BUG_ON(u3d == NULL); + + usb_del_gadget_udc(&u3d->gadget); + + /* free memory allocated in probe */ + if (u3d->trb_pool) + dma_pool_destroy(u3d->trb_pool); + + if (u3d->ep_context) + dma_free_coherent(&dev->dev, u3d->ep_context_size, + u3d->ep_context, u3d->ep_context_dma); + + kfree(u3d->eps); + + if (u3d->irq) + free_irq(u3d->irq, u3d); + + if (u3d->cap_regs) + iounmap(u3d->cap_regs); + u3d->cap_regs = NULL; + + kfree(u3d->status_req); + + clk_put(u3d->clk); + + kfree(u3d); + + return 0; +} + +static int mv_u3d_probe(struct platform_device *dev) +{ + struct mv_u3d *u3d = NULL; + struct mv_usb_platform_data *pdata = dev_get_platdata(&dev->dev); + int retval = 0; + struct resource *r; + size_t size; + + if (!dev_get_platdata(&dev->dev)) { + dev_err(&dev->dev, "missing platform_data\n"); + retval = -ENODEV; + goto err_pdata; + } + + u3d = kzalloc(sizeof(*u3d), GFP_KERNEL); + if (!u3d) { + retval = -ENOMEM; + goto err_alloc_private; + } + + spin_lock_init(&u3d->lock); + + platform_set_drvdata(dev, u3d); + + u3d->dev = &dev->dev; + u3d->vbus = pdata->vbus; + + u3d->clk = clk_get(&dev->dev, NULL); + if (IS_ERR(u3d->clk)) { + retval = PTR_ERR(u3d->clk); + goto err_get_clk; + } + + r = platform_get_resource_byname(dev, IORESOURCE_MEM, "capregs"); + if (!r) { + dev_err(&dev->dev, "no I/O memory resource defined\n"); + retval = -ENODEV; + goto err_get_cap_regs; + } + + u3d->cap_regs = (struct mv_u3d_cap_regs __iomem *) + ioremap(r->start, resource_size(r)); + if (!u3d->cap_regs) { + dev_err(&dev->dev, "failed to map I/O memory\n"); + retval = -EBUSY; + goto err_map_cap_regs; + } else { + dev_dbg(&dev->dev, "cap_regs address: 0x%lx/0x%lx\n", + (unsigned long) r->start, + (unsigned long) u3d->cap_regs); + } + + /* we will access controller register, so enable the u3d controller */ + clk_enable(u3d->clk); + + if (pdata->phy_init) { + retval = pdata->phy_init(u3d->phy_regs); + if (retval) { + dev_err(&dev->dev, "init phy error %d\n", retval); + goto err_u3d_enable; + } + } + + u3d->op_regs = (struct mv_u3d_op_regs __iomem *)(u3d->cap_regs + + MV_U3D_USB3_OP_REGS_OFFSET); + + u3d->vuc_regs = (struct mv_u3d_vuc_regs __iomem *)(u3d->cap_regs + + ioread32(&u3d->cap_regs->vuoff)); + + u3d->max_eps = 16; + + /* + * some platform will use usb to download image, it may not disconnect + * usb gadget before loading kernel. So first stop u3d here. + */ + mv_u3d_controller_stop(u3d); + iowrite32(0xFFFFFFFF, &u3d->vuc_regs->intrcause); + + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); + + size = u3d->max_eps * sizeof(struct mv_u3d_ep_context) * 2; + size = (size + MV_U3D_EP_CONTEXT_ALIGNMENT - 1) + & ~(MV_U3D_EP_CONTEXT_ALIGNMENT - 1); + u3d->ep_context = dma_alloc_coherent(&dev->dev, size, + &u3d->ep_context_dma, GFP_KERNEL); + if (!u3d->ep_context) { + dev_err(&dev->dev, "allocate ep context memory failed\n"); + retval = -ENOMEM; + goto err_alloc_ep_context; + } + u3d->ep_context_size = size; + + /* create TRB dma_pool resource */ + u3d->trb_pool = dma_pool_create("u3d_trb", + &dev->dev, + sizeof(struct mv_u3d_trb_hw), + MV_U3D_TRB_ALIGNMENT, + MV_U3D_DMA_BOUNDARY); + + if (!u3d->trb_pool) { + retval = -ENOMEM; + goto err_alloc_trb_pool; + } + + size = u3d->max_eps * sizeof(struct mv_u3d_ep) * 2; + u3d->eps = kzalloc(size, GFP_KERNEL); + if (!u3d->eps) { + retval = -ENOMEM; + goto err_alloc_eps; + } + + /* initialize ep0 status request structure */ + u3d->status_req = kzalloc(sizeof(struct mv_u3d_req) + 8, GFP_KERNEL); + if (!u3d->status_req) { + retval = -ENOMEM; + goto err_alloc_status_req; + } + INIT_LIST_HEAD(&u3d->status_req->queue); + + /* allocate a small amount of memory to get valid address */ + u3d->status_req->req.buf = (char *)u3d->status_req + + sizeof(struct mv_u3d_req); + u3d->status_req->req.dma = virt_to_phys(u3d->status_req->req.buf); + + u3d->resume_state = USB_STATE_NOTATTACHED; + u3d->usb_state = USB_STATE_ATTACHED; + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; + u3d->remote_wakeup = 0; + + r = platform_get_resource(dev, IORESOURCE_IRQ, 0); + if (!r) { + dev_err(&dev->dev, "no IRQ resource defined\n"); + retval = -ENODEV; + goto err_get_irq; + } + u3d->irq = r->start; + if (request_irq(u3d->irq, mv_u3d_irq, + IRQF_SHARED, driver_name, u3d)) { + u3d->irq = 0; + dev_err(&dev->dev, "Request irq %d for u3d failed\n", + u3d->irq); + retval = -ENODEV; + goto err_request_irq; + } + + /* initialize gadget structure */ + u3d->gadget.ops = &mv_u3d_ops; /* usb_gadget_ops */ + u3d->gadget.ep0 = &u3d->eps[1].ep; /* gadget ep0 */ + INIT_LIST_HEAD(&u3d->gadget.ep_list); /* ep_list */ + u3d->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ + + /* the "gadget" abstracts/virtualizes the controller */ + u3d->gadget.name = driver_name; /* gadget name */ + + mv_u3d_eps_init(u3d); + + /* external vbus detection */ + if (u3d->vbus) { + u3d->clock_gating = 1; + dev_err(&dev->dev, "external vbus detection\n"); + } + + if (!u3d->clock_gating) + u3d->vbus_active = 1; + + /* enable usb3 controller vbus detection */ + u3d->vbus_valid_detect = 1; + + retval = usb_add_gadget_udc(&dev->dev, &u3d->gadget); + if (retval) + goto err_unregister; + + dev_dbg(&dev->dev, "successful probe usb3 device %s clock gating.\n", + u3d->clock_gating ? "with" : "without"); + + return 0; + +err_unregister: + free_irq(u3d->irq, u3d); +err_request_irq: +err_get_irq: + kfree(u3d->status_req); +err_alloc_status_req: + kfree(u3d->eps); +err_alloc_eps: + dma_pool_destroy(u3d->trb_pool); +err_alloc_trb_pool: + dma_free_coherent(&dev->dev, u3d->ep_context_size, + u3d->ep_context, u3d->ep_context_dma); +err_alloc_ep_context: + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); +err_u3d_enable: + iounmap(u3d->cap_regs); +err_map_cap_regs: +err_get_cap_regs: +err_get_clk: + clk_put(u3d->clk); + kfree(u3d); +err_alloc_private: +err_pdata: + return retval; +} + +#ifdef CONFIG_PM_SLEEP +static int mv_u3d_suspend(struct device *dev) +{ + struct mv_u3d *u3d = dev_get_drvdata(dev); + + /* + * only cable is unplugged, usb can suspend. + * So do not care about clock_gating == 1, it is handled by + * vbus session. + */ + if (!u3d->clock_gating) { + mv_u3d_controller_stop(u3d); + + spin_lock_irq(&u3d->lock); + /* stop all usb activities */ + mv_u3d_stop_activity(u3d, u3d->driver); + spin_unlock_irq(&u3d->lock); + + mv_u3d_disable(u3d); + } + + return 0; +} + +static int mv_u3d_resume(struct device *dev) +{ + struct mv_u3d *u3d = dev_get_drvdata(dev); + int retval; + + if (!u3d->clock_gating) { + retval = mv_u3d_enable(u3d); + if (retval) + return retval; + + if (u3d->driver && u3d->softconnect) { + mv_u3d_controller_reset(u3d); + mv_u3d_ep0_reset(u3d); + mv_u3d_controller_start(u3d); + } + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(mv_u3d_pm_ops, mv_u3d_suspend, mv_u3d_resume); + +static void mv_u3d_shutdown(struct platform_device *dev) +{ + struct mv_u3d *u3d = platform_get_drvdata(dev); + u32 tmp; + + tmp = ioread32(&u3d->op_regs->usbcmd); + tmp &= ~MV_U3D_CMD_RUN_STOP; + iowrite32(tmp, &u3d->op_regs->usbcmd); +} + +static struct platform_driver mv_u3d_driver = { + .probe = mv_u3d_probe, + .remove = mv_u3d_remove, + .shutdown = mv_u3d_shutdown, + .driver = { + .owner = THIS_MODULE, + .name = "mv-u3d", + .pm = &mv_u3d_pm_ops, + }, +}; + +module_platform_driver(mv_u3d_driver); +MODULE_ALIAS("platform:mv-u3d"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Yu Xu <yuxu@marvell.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h index 34aadfae723..be77f207dba 100644 --- a/drivers/usb/gadget/mv_udc.h +++ b/drivers/usb/gadget/mv_udc.h @@ -217,13 +217,12 @@ struct mv_udc { struct work_struct vbus_work; struct workqueue_struct *qwork; - struct otg_transceiver *transceiver; + struct usb_phy *transceiver; struct mv_usb_platform_data *pdata; /* some SOC has mutiple clock sources for USB*/ - unsigned int clknum; - struct clk *clk[0]; + struct clk *clk; }; /* endpoint data structure */ @@ -232,7 +231,6 @@ struct mv_ep { struct mv_udc *udc; struct list_head queue; struct mv_dqh *dqh; - const struct usb_endpoint_descriptor *desc; u32 direction; char name[14]; unsigned stopped:1, diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index f97e737d26f..fcff3a571b4 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -19,7 +19,7 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/errno.h> -#include <linux/init.h> +#include <linux/err.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> @@ -34,7 +34,6 @@ #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/platform_data/mv_usb.h> -#include <asm/system.h> #include <asm/unaligned.h> #include "mv_udc.h" @@ -51,9 +50,8 @@ #define EPSTATUS_TIMEOUT 10000 #define PRIME_TIMEOUT 10000 #define READSAFE_TIMEOUT 1000 -#define DTD_TIMEOUT 1000 -#define LOOPS_USEC_SHIFT 4 +#define LOOPS_USEC_SHIFT 1 #define LOOPS_USEC (1 << LOOPS_USEC_SHIFT) #define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT) @@ -62,10 +60,6 @@ static DECLARE_COMPLETION(release_done); static const char driver_name[] = "mv_udc"; static const char driver_desc[] = DRIVER_DESC; -/* controller device global variable */ -static struct mv_udc *the_controller; -int mv_usb_otgsc; - static void nuke(struct mv_ep *ep, int status); static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver); @@ -217,6 +211,8 @@ static int process_ep_req(struct mv_udc *udc, int index, * request is still in progress. */ static void done(struct mv_ep *ep, struct mv_req *req, int status) + __releases(&ep->udc->lock) + __acquires(&ep->udc->lock) { struct mv_udc *udc = NULL; unsigned char stopped = ep->stopped; @@ -242,18 +238,7 @@ static void done(struct mv_ep *ep, struct mv_req *req, int status) dma_pool_free(udc->dtd_pool, curr_td, curr_td->td_dma); } - if (req->mapped) { - dma_unmap_single(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ((ep_dir(ep) == EP_DIR_IN) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE)); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else - dma_sync_single_for_cpu(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ((ep_dir(ep) == EP_DIR_IN) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE)); + usb_gadget_unmap_request(&udc->gadget, &req->req, ep_dir(ep)); if (status && (status != -ESHUTDOWN)) dev_info(&udc->dev->dev, "complete %s req %p stat %d len %u/%u", @@ -357,17 +342,24 @@ done: return retval; } - static struct mv_dtd *build_dtd(struct mv_req *req, unsigned *length, dma_addr_t *dma, int *is_last) { - u32 temp; struct mv_dtd *dtd; struct mv_udc *udc; + struct mv_dqh *dqh; + u32 temp, mult = 0; /* how big will this transfer be? */ - *length = min(req->req.length - req->req.actual, - (unsigned)EP_MAX_LENGTH_TRANSFER); + if (usb_endpoint_xfer_isoc(req->ep->ep.desc)) { + dqh = req->ep->dqh; + mult = (dqh->max_packet_length >> EP_QUEUE_HEAD_MULT_POS) + & 0x3; + *length = min(req->req.length - req->req.actual, + (unsigned)(mult * req->ep->ep.maxpacket)); + } else + *length = min(req->req.length - req->req.actual, + (unsigned)EP_MAX_LENGTH_TRANSFER); udc = req->ep->udc; @@ -375,7 +367,7 @@ static struct mv_dtd *build_dtd(struct mv_req *req, unsigned *length, * Be careful that no _GFP_HIGHMEM is set, * or we can not use dma_to_virt */ - dtd = dma_pool_alloc(udc->dtd_pool, GFP_KERNEL, dma); + dtd = dma_pool_alloc(udc->dtd_pool, GFP_ATOMIC, dma); if (dtd == NULL) return dtd; @@ -409,6 +401,8 @@ static struct mv_dtd *build_dtd(struct mv_req *req, unsigned *length, if (*is_last && !req->req.no_interrupt) temp |= DTD_IOC; + temp |= mult << 10; + dtd->size_ioc_sts = temp; mb(); @@ -465,7 +459,7 @@ static int mv_ep_enable(struct usb_ep *_ep, ep = container_of(_ep, struct mv_ep, ep); udc = ep->udc; - if (!_ep || !desc || ep->desc + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) return -EINVAL; @@ -529,7 +523,7 @@ static int mv_ep_enable(struct usb_ep *_ep, dqh->size_ioc_int_sts = 0; ep->ep.maxpacket = max; - ep->desc = desc; + ep->ep.desc = desc; ep->stopped = 0; /* Enable the endpoint for Rx or Tx and set the endpoint type */ @@ -581,7 +575,7 @@ static int mv_ep_disable(struct usb_ep *_ep) unsigned long flags; ep = container_of(_ep, struct mv_ep, ep); - if ((_ep == NULL) || !ep->desc) + if ((_ep == NULL) || !ep->ep.desc) return -EINVAL; udc = ep->udc; @@ -607,7 +601,7 @@ static int mv_ep_disable(struct usb_ep *_ep) /* nuke all pending requests (does flush) */ nuke(ep, -ESHUTDOWN); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 1; spin_unlock_irqrestore(&udc->lock, flags); @@ -651,7 +645,7 @@ static void mv_ep_fifo_flush(struct usb_ep *_ep) return; ep = container_of(_ep, struct mv_ep, ep); - if (!ep->desc) + if (!ep->ep.desc) return; udc = ep->udc; @@ -708,6 +702,7 @@ mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) struct mv_req *req = container_of(_req, struct mv_req, req); struct mv_udc *udc = ep->udc; unsigned long flags; + int retval; /* catch various bogus parameters */ if (!_req || !req->req.complete || !req->req.buf @@ -715,14 +710,10 @@ mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) dev_err(&udc->dev->dev, "%s, bad params", __func__); return -EINVAL; } - if (unlikely(!_ep || !ep->desc)) { + if (unlikely(!_ep || !ep->ep.desc)) { dev_err(&udc->dev->dev, "%s, bad ep", __func__); return -EINVAL; } - if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { - if (req->req.length > ep->ep.maxpacket) - return -EMSGSIZE; - } udc = ep->udc; if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) @@ -731,21 +722,9 @@ mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) req->ep = ep; /* map virtual address to hardware */ - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, - req->req.buf, - req->req.length, ep_dir(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 1; - } else { - dma_sync_single_for_device(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_dir(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 0; - } + retval = usb_gadget_map_request(&udc->gadget, _req, ep_dir(ep)); + if (retval) + return retval; req->req.status = -EINPROGRESS; req->req.actual = 0; @@ -755,15 +734,17 @@ mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* build dtds and push them to device queue */ if (!req_to_dtd(req)) { - int retval; retval = queue_dtd(ep, req); if (retval) { spin_unlock_irqrestore(&udc->lock, flags); - return retval; + dev_err(&udc->dev->dev, "Failed to queue dtd\n"); + goto err_unmap_dma; } } else { spin_unlock_irqrestore(&udc->lock, flags); - return -ENOMEM; + dev_err(&udc->dev->dev, "Failed to dma_pool_alloc\n"); + retval = -ENOMEM; + goto err_unmap_dma; } /* Update ep0 state */ @@ -771,11 +752,15 @@ mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) udc->ep0_state = DATA_STATE_XMIT; /* irq handler advances the queue */ - if (req != NULL) - list_add_tail(&req->queue, &ep->queue); + list_add_tail(&req->queue, &ep->queue); spin_unlock_irqrestore(&udc->lock, flags); return 0; + +err_unmap_dma: + usb_gadget_unmap_request(&udc->gadget, _req, ep_dir(ep)); + + return retval; } static void mv_prime_ep(struct mv_ep *ep, struct mv_req *req) @@ -926,12 +911,12 @@ static int mv_ep_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) ep = container_of(_ep, struct mv_ep, ep); udc = ep->udc; - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { status = -EINVAL; goto out; } - if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { status = -EOPNOTSUPP; goto out; } @@ -988,18 +973,12 @@ static struct usb_ep_ops mv_ep_ops = { static void udc_clock_enable(struct mv_udc *udc) { - unsigned int i; - - for (i = 0; i < udc->clknum; i++) - clk_enable(udc->clk[i]); + clk_prepare_enable(udc->clk); } static void udc_clock_disable(struct mv_udc *udc) { - unsigned int i; - - for (i = 0; i < udc->clknum; i++) - clk_disable(udc->clk[i]); + clk_disable_unprepare(udc->clk); } static void udc_stop(struct mv_udc *udc) @@ -1066,7 +1045,7 @@ static int udc_reset(struct mv_udc *udc) tmp |= USBMODE_CTRL_MODE_DEVICE; /* turn setup lockout off, require setup tripwire in usbcmd */ - tmp |= USBMODE_SETUP_LOCK_OFF | USBMODE_STREAM_DISABLE; + tmp |= USBMODE_SETUP_LOCK_OFF; writel(tmp, &udc->op_regs->usbmode); @@ -1200,12 +1179,16 @@ static int mv_udc_vbus_session(struct usb_gadget *gadget, int is_active) udc_start(udc); } } else if (udc->driver && udc->softconnect) { + if (!udc->active) + goto out; + /* stop all the transfer in queue*/ stop_activity(udc, udc->driver); udc_stop(udc); mv_udc_disable(udc); } +out: spin_unlock_irqrestore(&udc->lock, flags); return retval; } @@ -1243,9 +1226,8 @@ static int mv_udc_pullup(struct usb_gadget *gadget, int is_on) return retval; } -static int mv_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int mv_udc_stop(struct usb_gadget_driver *driver); +static int mv_udc_start(struct usb_gadget *, struct usb_gadget_driver *); +static int mv_udc_stop(struct usb_gadget *, struct usb_gadget_driver *); /* device controller usb_gadget_ops structure */ static const struct usb_gadget_ops mv_ops = { @@ -1260,8 +1242,8 @@ static const struct usb_gadget_ops mv_ops = { /* D+ pullup, software-controlled connect/disconnect to USB host */ .pullup = mv_udc_pullup, - .start = mv_udc_start, - .stop = mv_udc_stop, + .udc_start = mv_udc_start, + .udc_stop = mv_udc_stop, }; static int eps_init(struct mv_udc *udc) @@ -1278,9 +1260,9 @@ static int eps_init(struct mv_udc *udc) ep->ep.ops = &mv_ep_ops; ep->wedge = 0; ep->stopped = 0; - ep->ep.maxpacket = EP0_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, EP0_MAX_PKT_SIZE); ep->ep_num = 0; - ep->desc = &mv_ep0_desc; + ep->ep.desc = &mv_ep0_desc; INIT_LIST_HEAD(&ep->queue); ep->ep_type = USB_ENDPOINT_XFER_CONTROL; @@ -1301,7 +1283,7 @@ static int eps_init(struct mv_udc *udc) ep->ep.ops = &mv_ep_ops; ep->stopped = 0; - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); ep->ep_num = i / 2; INIT_LIST_HEAD(&ep->queue); @@ -1348,15 +1330,14 @@ static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver) } } -static int mv_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int mv_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; int retval = 0; unsigned long flags; - if (!udc) - return -ENODEV; + udc = container_of(gadget, struct mv_udc, gadget); if (udc->driver) return -EBUSY; @@ -1366,7 +1347,6 @@ static int mv_udc_start(struct usb_gadget_driver *driver, /* hook up the driver ... */ driver->driver.bus = NULL; udc->driver = driver; - udc->gadget.dev.driver = &driver->driver; udc->usb_state = USB_STATE_ATTACHED; udc->ep0_state = WAIT_FOR_SETUP; @@ -1374,25 +1354,13 @@ static int mv_udc_start(struct usb_gadget_driver *driver, spin_unlock_irqrestore(&udc->lock, flags); - retval = bind(&udc->gadget); - if (retval) { - dev_err(&udc->dev->dev, "bind to driver %s --> %d\n", - driver->driver.name, retval); - udc->driver = NULL; - udc->gadget.dev.driver = NULL; - return retval; - } - if (udc->transceiver) { - retval = otg_set_peripheral(udc->transceiver, &udc->gadget); + retval = otg_set_peripheral(udc->transceiver->otg, + &udc->gadget); if (retval) { dev_err(&udc->dev->dev, "unable to register peripheral to otg\n"); - if (driver->unbind) { - driver->unbind(&udc->gadget); - udc->gadget.dev.driver = NULL; - udc->driver = NULL; - } + udc->driver = NULL; return retval; } } @@ -1407,13 +1375,13 @@ static int mv_udc_start(struct usb_gadget_driver *driver, return 0; } -static int mv_udc_stop(struct usb_gadget_driver *driver) +static int mv_udc_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; unsigned long flags; - if (!udc) - return -ENODEV; + udc = container_of(gadget, struct mv_udc, gadget); spin_lock_irqsave(&udc->lock, flags); @@ -1428,8 +1396,6 @@ static int mv_udc_stop(struct usb_gadget_driver *driver) spin_unlock_irqrestore(&udc->lock, flags); /* unbind gadget driver */ - driver->unbind(&udc->gadget); - udc->gadget.dev.driver = NULL; udc->driver = NULL; return 0; @@ -1446,10 +1412,13 @@ static void mv_set_ptc(struct mv_udc *udc, u32 mode) static void prime_status_complete(struct usb_ep *ep, struct usb_request *_req) { - struct mv_udc *udc = the_controller; + struct mv_ep *mvep = container_of(ep, struct mv_ep, ep); struct mv_req *req = container_of(_req, struct mv_req, req); + struct mv_udc *udc; unsigned long flags; + udc = mvep->udc; + dev_info(&udc->dev->dev, "switch to test mode %d\n", req->test_mode); spin_lock_irqsave(&udc->lock, flags); @@ -1499,15 +1468,17 @@ udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty) } /* prime the data phase */ - if (!req_to_dtd(req)) + if (!req_to_dtd(req)) { retval = queue_dtd(ep, req); - else{ /* no mem */ + if (retval) { + dev_err(&udc->dev->dev, + "Failed to queue dtd when prime status\n"); + goto out; + } + } else{ /* no mem */ retval = -ENOMEM; - goto out; - } - - if (retval) { - dev_err(&udc->dev->dev, "response error on GET_STATUS request\n"); + dev_err(&udc->dev->dev, + "Failed to dma_pool_alloc when prime status\n"); goto out; } @@ -1515,6 +1486,8 @@ udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty) return 0; out: + usb_gadget_unmap_request(&udc->gadget, &req->req, ep_dir(ep)); + return retval; } @@ -1673,6 +1646,8 @@ out: static void handle_setup_packet(struct mv_udc *udc, u8 ep_num, struct usb_ctrlrequest *setup) + __releases(&ep->udc->lock) + __acquires(&ep->udc->lock) { bool delegate = false; @@ -1869,7 +1844,7 @@ static void irq_process_tr_complete(struct mv_udc *udc) } } -void irq_process_reset(struct mv_udc *udc) +static void irq_process_reset(struct mv_udc *udc) { u32 tmp; unsigned int loops; @@ -2086,15 +2061,18 @@ static void mv_udc_vbus_work(struct work_struct *work) /* release device structure */ static void gadget_release(struct device *_dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; + + udc = dev_get_drvdata(_dev); complete(udc->done); } -static int __devexit mv_udc_remove(struct platform_device *dev) +static int mv_udc_remove(struct platform_device *pdev) { - struct mv_udc *udc = the_controller; - int clk_i; + struct mv_udc *udc; + + udc = platform_get_drvdata(pdev); usb_del_gadget_udc(&udc->gadget); @@ -2103,129 +2081,95 @@ static int __devexit mv_udc_remove(struct platform_device *dev) destroy_workqueue(udc->qwork); } - /* - * If we have transceiver inited, - * then vbus irq will not be requested in udc driver. - */ - if (udc->pdata && udc->pdata->vbus - && udc->clock_gating && udc->transceiver == NULL) - free_irq(udc->pdata->vbus->irq, &dev->dev); - /* free memory allocated in probe */ if (udc->dtd_pool) dma_pool_destroy(udc->dtd_pool); if (udc->ep_dqh) - dma_free_coherent(&dev->dev, udc->ep_dqh_size, + dma_free_coherent(&pdev->dev, udc->ep_dqh_size, udc->ep_dqh, udc->ep_dqh_dma); - kfree(udc->eps); - - if (udc->irq) - free_irq(udc->irq, &dev->dev); - mv_udc_disable(udc); - if (udc->cap_regs) - iounmap(udc->cap_regs); - - if (udc->phy_regs) - iounmap(udc->phy_regs); - - if (udc->status_req) { - kfree(udc->status_req->req.buf); - kfree(udc->status_req); - } - - for (clk_i = 0; clk_i <= udc->clknum; clk_i++) - clk_put(udc->clk[clk_i]); - - device_unregister(&udc->gadget.dev); - /* free dev, wait for the release() finished */ wait_for_completion(udc->done); - kfree(udc); - - the_controller = NULL; return 0; } -static int __devinit mv_udc_probe(struct platform_device *dev) +static int mv_udc_probe(struct platform_device *pdev) { - struct mv_usb_platform_data *pdata = dev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); struct mv_udc *udc; int retval = 0; - int clk_i = 0; struct resource *r; size_t size; if (pdata == NULL) { - dev_err(&dev->dev, "missing platform_data\n"); + dev_err(&pdev->dev, "missing platform_data\n"); return -ENODEV; } - size = sizeof(*udc) + sizeof(struct clk *) * pdata->clknum; - udc = kzalloc(size, GFP_KERNEL); + udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL); if (udc == NULL) { - dev_err(&dev->dev, "failed to allocate memory for udc\n"); + dev_err(&pdev->dev, "failed to allocate memory for udc\n"); return -ENOMEM; } - the_controller = udc; udc->done = &release_done; - udc->pdata = dev->dev.platform_data; + udc->pdata = dev_get_platdata(&pdev->dev); spin_lock_init(&udc->lock); - udc->dev = dev; + udc->dev = pdev; -#ifdef CONFIG_USB_OTG_UTILS - if (pdata->mode == MV_USB_MODE_OTG) - udc->transceiver = otg_get_transceiver(); -#endif + if (pdata->mode == MV_USB_MODE_OTG) { + udc->transceiver = devm_usb_get_phy(&pdev->dev, + USB_PHY_TYPE_USB2); + if (IS_ERR(udc->transceiver)) { + retval = PTR_ERR(udc->transceiver); - udc->clknum = pdata->clknum; - for (clk_i = 0; clk_i < udc->clknum; clk_i++) { - udc->clk[clk_i] = clk_get(&dev->dev, pdata->clkname[clk_i]); - if (IS_ERR(udc->clk[clk_i])) { - retval = PTR_ERR(udc->clk[clk_i]); - goto err_put_clk; + if (retval == -ENXIO) + return retval; + + udc->transceiver = NULL; + return -EPROBE_DEFER; } } + /* udc only have one sysclk. */ + udc->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(udc->clk)) + return PTR_ERR(udc->clk); + r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "capregs"); if (r == NULL) { - dev_err(&dev->dev, "no I/O memory resource defined\n"); - retval = -ENODEV; - goto err_put_clk; + dev_err(&pdev->dev, "no I/O memory resource defined\n"); + return -ENODEV; } udc->cap_regs = (struct mv_cap_regs __iomem *) - ioremap(r->start, resource_size(r)); + devm_ioremap(&pdev->dev, r->start, resource_size(r)); if (udc->cap_regs == NULL) { - dev_err(&dev->dev, "failed to map I/O memory\n"); - retval = -EBUSY; - goto err_put_clk; + dev_err(&pdev->dev, "failed to map I/O memory\n"); + return -EBUSY; } r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "phyregs"); if (r == NULL) { - dev_err(&dev->dev, "no phy I/O memory resource defined\n"); - retval = -ENODEV; - goto err_iounmap_capreg; + dev_err(&pdev->dev, "no phy I/O memory resource defined\n"); + return -ENODEV; } udc->phy_regs = ioremap(r->start, resource_size(r)); if (udc->phy_regs == NULL) { - dev_err(&dev->dev, "failed to map phy I/O memory\n"); - retval = -EBUSY; - goto err_iounmap_capreg; + dev_err(&pdev->dev, "failed to map phy I/O memory\n"); + return -EBUSY; } /* we will acces controller register, so enable the clk */ retval = mv_udc_enable_internal(udc); if (retval) - goto err_iounmap_phyreg; + return retval; udc->op_regs = (struct mv_op_regs __iomem *)((unsigned long)udc->cap_regs @@ -2242,11 +2186,11 @@ static int __devinit mv_udc_probe(struct platform_device *dev) size = udc->max_eps * sizeof(struct mv_dqh) *2; size = (size + DQH_ALIGNMENT - 1) & ~(DQH_ALIGNMENT - 1); - udc->ep_dqh = dma_alloc_coherent(&dev->dev, size, + udc->ep_dqh = dma_alloc_coherent(&pdev->dev, size, &udc->ep_dqh_dma, GFP_KERNEL); if (udc->ep_dqh == NULL) { - dev_err(&dev->dev, "allocate dQH memory failed\n"); + dev_err(&pdev->dev, "allocate dQH memory failed\n"); retval = -ENOMEM; goto err_disable_clock; } @@ -2254,7 +2198,7 @@ static int __devinit mv_udc_probe(struct platform_device *dev) /* create dTD dma_pool resource */ udc->dtd_pool = dma_pool_create("mv_dtd", - &dev->dev, + &pdev->dev, sizeof(struct mv_dtd), DTD_ALIGNMENT, DMA_BOUNDARY); @@ -2265,19 +2209,20 @@ static int __devinit mv_udc_probe(struct platform_device *dev) } size = udc->max_eps * sizeof(struct mv_ep) *2; - udc->eps = kzalloc(size, GFP_KERNEL); + udc->eps = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); if (udc->eps == NULL) { - dev_err(&dev->dev, "allocate ep memory failed\n"); + dev_err(&pdev->dev, "allocate ep memory failed\n"); retval = -ENOMEM; goto err_destroy_dma; } /* initialize ep0 status request structure */ - udc->status_req = kzalloc(sizeof(struct mv_req), GFP_KERNEL); + udc->status_req = devm_kzalloc(&pdev->dev, sizeof(struct mv_req), + GFP_KERNEL); if (!udc->status_req) { - dev_err(&dev->dev, "allocate status_req memory failed\n"); + dev_err(&pdev->dev, "allocate status_req memory failed\n"); retval = -ENOMEM; - goto err_free_eps; + goto err_destroy_dma; } INIT_LIST_HEAD(&udc->status_req->queue); @@ -2292,17 +2237,17 @@ static int __devinit mv_udc_probe(struct platform_device *dev) r = platform_get_resource(udc->dev, IORESOURCE_IRQ, 0); if (r == NULL) { - dev_err(&dev->dev, "no IRQ resource defined\n"); + dev_err(&pdev->dev, "no IRQ resource defined\n"); retval = -ENODEV; - goto err_free_status_req; + goto err_destroy_dma; } udc->irq = r->start; - if (request_irq(udc->irq, mv_udc_irq, + if (devm_request_irq(&pdev->dev, udc->irq, mv_udc_irq, IRQF_SHARED, driver_name, udc)) { - dev_err(&dev->dev, "Request irq %d for UDC failed\n", + dev_err(&pdev->dev, "Request irq %d for UDC failed\n", udc->irq); retval = -ENODEV; - goto err_free_status_req; + goto err_destroy_dma; } /* initialize gadget structure */ @@ -2313,16 +2258,8 @@ static int __devinit mv_udc_probe(struct platform_device *dev) udc->gadget.max_speed = USB_SPEED_HIGH; /* support dual speed */ /* the "gadget" abstracts/virtualizes the controller */ - dev_set_name(&udc->gadget.dev, "gadget"); - udc->gadget.dev.parent = &dev->dev; - udc->gadget.dev.dma_mask = dev->dev.dma_mask; - udc->gadget.dev.release = gadget_release; udc->gadget.name = driver_name; /* gadget name */ - retval = device_register(&udc->gadget.dev); - if (retval) - goto err_free_irq; - eps_init(udc); /* VBUS detect: we can disable/enable clock on demand.*/ @@ -2330,10 +2267,11 @@ static int __devinit mv_udc_probe(struct platform_device *dev) udc->clock_gating = 1; else if (pdata->vbus) { udc->clock_gating = 1; - retval = request_threaded_irq(pdata->vbus->irq, NULL, + retval = devm_request_threaded_irq(&pdev->dev, + pdata->vbus->irq, NULL, mv_udc_vbus_irq, IRQF_ONESHOT, "vbus", udc); if (retval) { - dev_info(&dev->dev, + dev_info(&pdev->dev, "Can not request irq for VBUS, " "disable clock gating\n"); udc->clock_gating = 0; @@ -2341,9 +2279,9 @@ static int __devinit mv_udc_probe(struct platform_device *dev) udc->qwork = create_singlethread_workqueue("mv_udc_queue"); if (!udc->qwork) { - dev_err(&dev->dev, "cannot create workqueue\n"); + dev_err(&pdev->dev, "cannot create workqueue\n"); retval = -ENOMEM; - goto err_unregister; + goto err_destroy_dma; } INIT_WORK(&udc->vbus_work, mv_udc_vbus_work); @@ -2359,50 +2297,36 @@ static int __devinit mv_udc_probe(struct platform_device *dev) else udc->vbus_active = 1; - retval = usb_add_gadget_udc(&dev->dev, &udc->gadget); + retval = usb_add_gadget_udc_release(&pdev->dev, &udc->gadget, + gadget_release); if (retval) - goto err_unregister; + goto err_create_workqueue; - dev_info(&dev->dev, "successful probe UDC device %s clock gating.\n", + platform_set_drvdata(pdev, udc); + dev_info(&pdev->dev, "successful probe UDC device %s clock gating.\n", udc->clock_gating ? "with" : "without"); return 0; -err_unregister: - if (udc->pdata && udc->pdata->vbus - && udc->clock_gating && udc->transceiver == NULL) - free_irq(pdata->vbus->irq, &dev->dev); - device_unregister(&udc->gadget.dev); -err_free_irq: - free_irq(udc->irq, &dev->dev); -err_free_status_req: - kfree(udc->status_req->req.buf); - kfree(udc->status_req); -err_free_eps: - kfree(udc->eps); +err_create_workqueue: + destroy_workqueue(udc->qwork); err_destroy_dma: dma_pool_destroy(udc->dtd_pool); err_free_dma: - dma_free_coherent(&dev->dev, udc->ep_dqh_size, + dma_free_coherent(&pdev->dev, udc->ep_dqh_size, udc->ep_dqh, udc->ep_dqh_dma); err_disable_clock: mv_udc_disable_internal(udc); -err_iounmap_phyreg: - iounmap(udc->phy_regs); -err_iounmap_capreg: - iounmap(udc->cap_regs); -err_put_clk: - for (clk_i--; clk_i >= 0; clk_i--) - clk_put(udc->clk[clk_i]); - the_controller = NULL; - kfree(udc); + return retval; } #ifdef CONFIG_PM -static int mv_udc_suspend(struct device *_dev) +static int mv_udc_suspend(struct device *dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; + + udc = dev_get_drvdata(dev); /* if OTG is enabled, the following will be done in OTG driver*/ if (udc->transceiver) @@ -2432,11 +2356,13 @@ static int mv_udc_suspend(struct device *_dev) return 0; } -static int mv_udc_resume(struct device *_dev) +static int mv_udc_resume(struct device *dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; int retval; + udc = dev_get_drvdata(dev); + /* if OTG is enabled, the following will be done in OTG driver*/ if (udc->transceiver) return 0; @@ -2462,20 +2388,23 @@ static const struct dev_pm_ops mv_udc_pm_ops = { }; #endif -static void mv_udc_shutdown(struct platform_device *dev) +static void mv_udc_shutdown(struct platform_device *pdev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; u32 mode; + udc = platform_get_drvdata(pdev); /* reset controller mode to IDLE */ + mv_udc_enable(udc); mode = readl(&udc->op_regs->usbmode); mode &= ~3; writel(mode, &udc->op_regs->usbmode); + mv_udc_disable(udc); } static struct platform_driver udc_driver = { .probe = mv_udc_probe, - .remove = __exit_p(mv_udc_remove), + .remove = mv_udc_remove, .shutdown = mv_udc_shutdown, .driver = { .owner = THIS_MODULE, diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c index 89530034dff..81956feca1b 100644 --- a/drivers/usb/gadget/ncm.c +++ b/drivers/usb/gadget/ncm.c @@ -20,32 +20,16 @@ /* #define VERBOSE_DEBUG */ #include <linux/kernel.h> -#include <linux/utsname.h> - +#include <linux/module.h> +#include <linux/usb/composite.h> #include "u_ether.h" +#include "u_ncm.h" #define DRIVER_DESC "NCM Gadget" /*-------------------------------------------------------------------------*/ -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -#include "f_ncm.c" -#include "u_ether.c" - -/*-------------------------------------------------------------------------*/ - /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! * Instead: allocate your own, using normal USB-IF procedures. */ @@ -57,6 +41,9 @@ #define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ /*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); + +USB_ETHERNET_MODULE_PARAMETERS(); static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, @@ -97,17 +84,11 @@ static const struct usb_descriptor_header *otg_desc[] = { NULL, }; - /* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 - -static char manufacturer[50]; - static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", { } /* end of list */ }; @@ -121,12 +102,15 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; -static u8 hostaddr[ETH_ALEN]; +static struct usb_function_instance *f_ncm_inst; +static struct usb_function *f_ncm; /*-------------------------------------------------------------------------*/ static int __init ncm_do_config(struct usb_configuration *c) { + int status; + /* FIXME alloc iConfiguration string, set it in c->strings */ if (gadget_is_otg(c->cdev->gadget)) { @@ -134,7 +118,19 @@ static int __init ncm_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - return ncm_bind_config(c, hostaddr); + f_ncm = usb_get_function(f_ncm_inst); + if (IS_ERR(f_ncm)) { + status = PTR_ERR(f_ncm); + return status; + } + + status = usb_add_function(c, f_ncm); + if (status < 0) { + usb_put_function(f_ncm); + return status; + } + + return 0; } static struct usb_configuration ncm_config_driver = { @@ -149,77 +145,62 @@ static struct usb_configuration ncm_config_driver = { static int __init gncm_bind(struct usb_composite_dev *cdev) { - int gcnum; struct usb_gadget *gadget = cdev->gadget; + struct f_ncm_opts *ncm_opts; int status; - /* set up network link layer */ - status = gether_setup(cdev->gadget, hostaddr); - if (status < 0) - return status; + f_ncm_inst = usb_get_function_instance("ncm"); + if (IS_ERR(f_ncm_inst)) + return PTR_ERR(f_ncm_inst); - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); - else { - /* We assume that can_support_ecm() tells the truth; - * but if the controller isn't recognized at all then - * that assumption is a bit more likely to be wrong. - */ - dev_warn(&gadget->dev, - "controller '%s' not recognized; trying %s\n", - gadget->name, - ncm_config_driver.label); - device_desc.bcdDevice = - cpu_to_le16(0x0300 | 0x0099); - } + ncm_opts = container_of(f_ncm_inst, struct f_ncm_opts, func_inst); + gether_set_qmult(ncm_opts->net, qmult); + if (!gether_set_host_addr(ncm_opts->net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(ncm_opts->net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - /* device descriptor strings: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - status = usb_string_id(cdev); - if (status < 0) - goto fail; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) goto fail; - strings_dev[STRING_PRODUCT_IDX].id = status; - device_desc.iProduct = status; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; status = usb_add_config(cdev, &ncm_config_driver, ncm_do_config); if (status < 0) goto fail; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s\n", DRIVER_DESC); return 0; fail: - gether_cleanup(); + usb_put_function_instance(f_ncm_inst); return status; } static int __exit gncm_unbind(struct usb_composite_dev *cdev) { - gether_cleanup(); + if (!IS_ERR_OR_NULL(f_ncm)) + usb_put_function(f_ncm); + if (!IS_ERR_OR_NULL(f_ncm_inst)) + usb_put_function_instance(f_ncm_inst); return 0; } -static struct usb_composite_driver ncm_driver = { +static __refdata struct usb_composite_driver ncm_driver = { .name = "g_ncm", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = gncm_bind, .unbind = __exit_p(gncm_unbind), }; @@ -229,7 +210,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_probe(&ncm_driver, gncm_bind); + return usb_composite_probe(&ncm_driver); } module_init(init); diff --git a/drivers/usb/gadget/ndis.h b/drivers/usb/gadget/ndis.h index b0e52fc277b..a19f72dec0c 100644 --- a/drivers/usb/gadget/ndis.h +++ b/drivers/usb/gadget/ndis.h @@ -15,11 +15,6 @@ #ifndef _LINUX_NDIS_H #define _LINUX_NDIS_H - -#define NDIS_STATUS_MULTICAST_FULL 0xC0010009 -#define NDIS_STATUS_MULTICAST_EXISTS 0xC001000A -#define NDIS_STATUS_MULTICAST_NOT_FOUND 0xC001000B - enum NDIS_DEVICE_POWER_STATE { NdisDeviceStateUnspecified = 0, NdisDeviceStateD0, @@ -35,11 +30,6 @@ struct NDIS_PM_WAKE_UP_CAPABILITIES { enum NDIS_DEVICE_POWER_STATE MinLinkChangeWakeUp; }; -/* NDIS_PNP_CAPABILITIES.Flags constants */ -#define NDIS_DEVICE_WAKE_UP_ENABLE 0x00000001 -#define NDIS_DEVICE_WAKE_ON_PATTERN_MATCH_ENABLE 0x00000002 -#define NDIS_DEVICE_WAKE_ON_MAGIC_PACKET_ENABLE 0x00000004 - struct NDIS_PNP_CAPABILITIES { __le32 Flags; struct NDIS_PM_WAKE_UP_CAPABILITIES WakeUpCapabilities; @@ -54,158 +44,4 @@ struct NDIS_PM_PACKET_PATTERN { __le32 PatternFlags; }; - -/* Required Object IDs (OIDs) */ -#define OID_GEN_SUPPORTED_LIST 0x00010101 -#define OID_GEN_HARDWARE_STATUS 0x00010102 -#define OID_GEN_MEDIA_SUPPORTED 0x00010103 -#define OID_GEN_MEDIA_IN_USE 0x00010104 -#define OID_GEN_MAXIMUM_LOOKAHEAD 0x00010105 -#define OID_GEN_MAXIMUM_FRAME_SIZE 0x00010106 -#define OID_GEN_LINK_SPEED 0x00010107 -#define OID_GEN_TRANSMIT_BUFFER_SPACE 0x00010108 -#define OID_GEN_RECEIVE_BUFFER_SPACE 0x00010109 -#define OID_GEN_TRANSMIT_BLOCK_SIZE 0x0001010A -#define OID_GEN_RECEIVE_BLOCK_SIZE 0x0001010B -#define OID_GEN_VENDOR_ID 0x0001010C -#define OID_GEN_VENDOR_DESCRIPTION 0x0001010D -#define OID_GEN_CURRENT_PACKET_FILTER 0x0001010E -#define OID_GEN_CURRENT_LOOKAHEAD 0x0001010F -#define OID_GEN_DRIVER_VERSION 0x00010110 -#define OID_GEN_MAXIMUM_TOTAL_SIZE 0x00010111 -#define OID_GEN_PROTOCOL_OPTIONS 0x00010112 -#define OID_GEN_MAC_OPTIONS 0x00010113 -#define OID_GEN_MEDIA_CONNECT_STATUS 0x00010114 -#define OID_GEN_MAXIMUM_SEND_PACKETS 0x00010115 -#define OID_GEN_VENDOR_DRIVER_VERSION 0x00010116 -#define OID_GEN_SUPPORTED_GUIDS 0x00010117 -#define OID_GEN_NETWORK_LAYER_ADDRESSES 0x00010118 -#define OID_GEN_TRANSPORT_HEADER_OFFSET 0x00010119 -#define OID_GEN_MACHINE_NAME 0x0001021A -#define OID_GEN_RNDIS_CONFIG_PARAMETER 0x0001021B -#define OID_GEN_VLAN_ID 0x0001021C - -/* Optional OIDs */ -#define OID_GEN_MEDIA_CAPABILITIES 0x00010201 -#define OID_GEN_PHYSICAL_MEDIUM 0x00010202 - -/* Required statistics OIDs */ -#define OID_GEN_XMIT_OK 0x00020101 -#define OID_GEN_RCV_OK 0x00020102 -#define OID_GEN_XMIT_ERROR 0x00020103 -#define OID_GEN_RCV_ERROR 0x00020104 -#define OID_GEN_RCV_NO_BUFFER 0x00020105 - -/* Optional statistics OIDs */ -#define OID_GEN_DIRECTED_BYTES_XMIT 0x00020201 -#define OID_GEN_DIRECTED_FRAMES_XMIT 0x00020202 -#define OID_GEN_MULTICAST_BYTES_XMIT 0x00020203 -#define OID_GEN_MULTICAST_FRAMES_XMIT 0x00020204 -#define OID_GEN_BROADCAST_BYTES_XMIT 0x00020205 -#define OID_GEN_BROADCAST_FRAMES_XMIT 0x00020206 -#define OID_GEN_DIRECTED_BYTES_RCV 0x00020207 -#define OID_GEN_DIRECTED_FRAMES_RCV 0x00020208 -#define OID_GEN_MULTICAST_BYTES_RCV 0x00020209 -#define OID_GEN_MULTICAST_FRAMES_RCV 0x0002020A -#define OID_GEN_BROADCAST_BYTES_RCV 0x0002020B -#define OID_GEN_BROADCAST_FRAMES_RCV 0x0002020C -#define OID_GEN_RCV_CRC_ERROR 0x0002020D -#define OID_GEN_TRANSMIT_QUEUE_LENGTH 0x0002020E -#define OID_GEN_GET_TIME_CAPS 0x0002020F -#define OID_GEN_GET_NETCARD_TIME 0x00020210 -#define OID_GEN_NETCARD_LOAD 0x00020211 -#define OID_GEN_DEVICE_PROFILE 0x00020212 -#define OID_GEN_INIT_TIME_MS 0x00020213 -#define OID_GEN_RESET_COUNTS 0x00020214 -#define OID_GEN_MEDIA_SENSE_COUNTS 0x00020215 -#define OID_GEN_FRIENDLY_NAME 0x00020216 -#define OID_GEN_MINIPORT_INFO 0x00020217 -#define OID_GEN_RESET_VERIFY_PARAMETERS 0x00020218 - -/* IEEE 802.3 (Ethernet) OIDs */ -#define NDIS_802_3_MAC_OPTION_PRIORITY 0x00000001 - -#define OID_802_3_PERMANENT_ADDRESS 0x01010101 -#define OID_802_3_CURRENT_ADDRESS 0x01010102 -#define OID_802_3_MULTICAST_LIST 0x01010103 -#define OID_802_3_MAXIMUM_LIST_SIZE 0x01010104 -#define OID_802_3_MAC_OPTIONS 0x01010105 -#define OID_802_3_RCV_ERROR_ALIGNMENT 0x01020101 -#define OID_802_3_XMIT_ONE_COLLISION 0x01020102 -#define OID_802_3_XMIT_MORE_COLLISIONS 0x01020103 -#define OID_802_3_XMIT_DEFERRED 0x01020201 -#define OID_802_3_XMIT_MAX_COLLISIONS 0x01020202 -#define OID_802_3_RCV_OVERRUN 0x01020203 -#define OID_802_3_XMIT_UNDERRUN 0x01020204 -#define OID_802_3_XMIT_HEARTBEAT_FAILURE 0x01020205 -#define OID_802_3_XMIT_TIMES_CRS_LOST 0x01020206 -#define OID_802_3_XMIT_LATE_COLLISIONS 0x01020207 - -/* OID_GEN_MINIPORT_INFO constants */ -#define NDIS_MINIPORT_BUS_MASTER 0x00000001 -#define NDIS_MINIPORT_WDM_DRIVER 0x00000002 -#define NDIS_MINIPORT_SG_LIST 0x00000004 -#define NDIS_MINIPORT_SUPPORTS_MEDIA_QUERY 0x00000008 -#define NDIS_MINIPORT_INDICATES_PACKETS 0x00000010 -#define NDIS_MINIPORT_IGNORE_PACKET_QUEUE 0x00000020 -#define NDIS_MINIPORT_IGNORE_REQUEST_QUEUE 0x00000040 -#define NDIS_MINIPORT_IGNORE_TOKEN_RING_ERRORS 0x00000080 -#define NDIS_MINIPORT_INTERMEDIATE_DRIVER 0x00000100 -#define NDIS_MINIPORT_IS_NDIS_5 0x00000200 -#define NDIS_MINIPORT_IS_CO 0x00000400 -#define NDIS_MINIPORT_DESERIALIZE 0x00000800 -#define NDIS_MINIPORT_REQUIRES_MEDIA_POLLING 0x00001000 -#define NDIS_MINIPORT_SUPPORTS_MEDIA_SENSE 0x00002000 -#define NDIS_MINIPORT_NETBOOT_CARD 0x00004000 -#define NDIS_MINIPORT_PM_SUPPORTED 0x00008000 -#define NDIS_MINIPORT_SUPPORTS_MAC_ADDRESS_OVERWRITE 0x00010000 -#define NDIS_MINIPORT_USES_SAFE_BUFFER_APIS 0x00020000 -#define NDIS_MINIPORT_HIDDEN 0x00040000 -#define NDIS_MINIPORT_SWENUM 0x00080000 -#define NDIS_MINIPORT_SURPRISE_REMOVE_OK 0x00100000 -#define NDIS_MINIPORT_NO_HALT_ON_SUSPEND 0x00200000 -#define NDIS_MINIPORT_HARDWARE_DEVICE 0x00400000 -#define NDIS_MINIPORT_SUPPORTS_CANCEL_SEND_PACKETS 0x00800000 -#define NDIS_MINIPORT_64BITS_DMA 0x01000000 - -#define NDIS_MEDIUM_802_3 0x00000000 -#define NDIS_MEDIUM_802_5 0x00000001 -#define NDIS_MEDIUM_FDDI 0x00000002 -#define NDIS_MEDIUM_WAN 0x00000003 -#define NDIS_MEDIUM_LOCAL_TALK 0x00000004 -#define NDIS_MEDIUM_DIX 0x00000005 -#define NDIS_MEDIUM_ARCENT_RAW 0x00000006 -#define NDIS_MEDIUM_ARCENT_878_2 0x00000007 -#define NDIS_MEDIUM_ATM 0x00000008 -#define NDIS_MEDIUM_WIRELESS_LAN 0x00000009 -#define NDIS_MEDIUM_IRDA 0x0000000A -#define NDIS_MEDIUM_BPC 0x0000000B -#define NDIS_MEDIUM_CO_WAN 0x0000000C -#define NDIS_MEDIUM_1394 0x0000000D - -#define NDIS_PACKET_TYPE_DIRECTED 0x00000001 -#define NDIS_PACKET_TYPE_MULTICAST 0x00000002 -#define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004 -#define NDIS_PACKET_TYPE_BROADCAST 0x00000008 -#define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010 -#define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020 -#define NDIS_PACKET_TYPE_SMT 0x00000040 -#define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080 -#define NDIS_PACKET_TYPE_GROUP 0x00000100 -#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200 -#define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400 -#define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800 - -#define NDIS_MEDIA_STATE_CONNECTED 0x00000000 -#define NDIS_MEDIA_STATE_DISCONNECTED 0x00000001 - -#define NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA 0x00000001 -#define NDIS_MAC_OPTION_RECEIVE_SERIALIZED 0x00000002 -#define NDIS_MAC_OPTION_TRANSFERS_NOT_PEND 0x00000004 -#define NDIS_MAC_OPTION_NO_LOOPBACK 0x00000008 -#define NDIS_MAC_OPTION_FULL_DUPLEX 0x00000010 -#define NDIS_MAC_OPTION_EOTX_INDICATION 0x00000020 -#define NDIS_MAC_OPTION_8021P_PRIORITY 0x00000040 -#define NDIS_MAC_OPTION_RESERVED 0x80000000 - #endif /* _LINUX_NDIS_H */ diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c index 7322d293213..ca15405583e 100644 --- a/drivers/usb/gadget/net2272.c +++ b/drivers/usb/gadget/net2272.c @@ -42,7 +42,6 @@ #include <linux/usb/gadget.h> #include <asm/byteorder.h> -#include <asm/system.h> #include <asm/unaligned.h> #include "net2272.h" @@ -59,8 +58,7 @@ static const char * const ep_name[] = { "ep-a", "ep-b", "ep-c", }; -#define DMA_ADDR_INVALID (~(dma_addr_t)0) -#ifdef CONFIG_USB_GADGET_NET2272_DMA +#ifdef CONFIG_USB_NET2272_DMA /* * use_dma: the NET2272 can use an external DMA controller. * Note that since there is no generic DMA api, some functions, @@ -268,7 +266,7 @@ static void net2272_ep_reset(struct net2272_ep *ep) ep->desc = NULL; INIT_LIST_HEAD(&ep->queue); - ep->ep.maxpacket = ~0; + usb_ep_set_maxpacket_limit(&ep->ep, ~0); ep->ep.ops = &net2272_ep_ops; /* disable irqs, endpoint */ @@ -342,7 +340,6 @@ net2272_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) if (!req) return NULL; - req->req.dma = DMA_ADDR_INVALID; INIT_LIST_HEAD(&req->queue); return &req->req; @@ -385,12 +382,9 @@ net2272_done(struct net2272_ep *ep, struct net2272_request *req, int status) status = req->req.status; dev = ep->dev; - if (use_dma && req->mapped) { - dma_unmap_single(dev->dev, req->req.dma, req->req.length, - ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } + if (use_dma && ep->dma) + usb_gadget_unmap_request(&dev->gadget, &req->req, + ep->is_in); if (status && status != -ESHUTDOWN) dev_vdbg(dev->dev, "complete %s req %p stat %d len %u/%u buf %p\n", @@ -850,10 +844,11 @@ net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return -ESHUTDOWN; /* set up dma mapping in case the caller didn't */ - if (use_dma && ep->dma && _req->dma == DMA_ADDR_INVALID) { - _req->dma = dma_map_single(dev->dev, _req->buf, _req->length, - ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 1; + if (use_dma && ep->dma) { + status = usb_gadget_map_request(&dev->gadget, _req, + ep->is_in); + if (status) + return status; } dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08llx %s\n", @@ -916,7 +911,7 @@ net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) } } } - if (likely(req != 0)) + if (likely(req)) list_add_tail(&req->queue, &ep->queue); if (likely(!list_empty(&ep->queue))) @@ -1189,7 +1184,7 @@ static const struct usb_gadget_ops net2272_ops = { /*---------------------------------------------------------------------------*/ static ssize_t -net2272_show_registers(struct device *_dev, struct device_attribute *attr, char *buf) +registers_show(struct device *_dev, struct device_attribute *attr, char *buf) { struct net2272 *dev; char *next; @@ -1313,7 +1308,7 @@ net2272_show_registers(struct device *_dev, struct device_attribute *attr, char return PAGE_SIZE - size; } -static DEVICE_ATTR(registers, S_IRUGO, net2272_show_registers, NULL); +static DEVICE_ATTR_RO(registers); /*---------------------------------------------------------------------------*/ @@ -1414,7 +1409,7 @@ net2272_usb_reinit(struct net2272 *dev) ep->fifo_size = 64; net2272_ep_reset(ep); } - dev->ep[0].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&dev->ep[0].ep, 64); dev->gadget.ep0 = &dev->ep[0].ep; dev->ep[0].stopped = 0; @@ -1470,7 +1465,6 @@ static int net2272_start(struct usb_gadget *_gadget, dev->softconnect = 1; driver->driver.bus = NULL; dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; /* ... then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. @@ -1498,6 +1492,13 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver) for (i = 0; i < 4; ++i) net2272_dequeue_all(&dev->ep[i]); + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&dev->lock); + driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + net2272_usb_reinit(dev); } @@ -1513,7 +1514,6 @@ static int net2272_stop(struct usb_gadget *_gadget, stop_activity(dev, driver); spin_unlock_irqrestore(&dev->lock, flags); - dev->gadget.dev.driver = NULL; dev->driver = NULL; dev_dbg(dev->dev, "unregistered driver '%s'\n", driver->driver.name); @@ -1545,7 +1545,7 @@ net2272_handle_dma(struct net2272_ep *ep) | (ep->dev->dma_eot_polarity << EOT_POLARITY) | (ep->dev->dma_dack_polarity << DACK_POLARITY) | (ep->dev->dma_dreq_polarity << DREQ_POLARITY) - | ((ep->dma >> 1) << DMA_ENDPOINT_SELECT)); + | (ep->dma << DMA_ENDPOINT_SELECT)); ep->dev->dma_busy = 0; @@ -1618,7 +1618,7 @@ net2272_handle_ep(struct net2272_ep *ep) ep->irqs++; dev_vdbg(ep->dev->dev, "%s ack ep_stat0 %02x, ep_stat1 %02x, req %p\n", - ep->ep.name, stat0, stat1, req ? &req->req : 0); + ep->ep.name, stat0, stat1, req ? &req->req : NULL); net2272_ep_write(ep, EP_STAT0, stat0 & ~((1 << NAK_OUT_PACKETS) @@ -2072,8 +2072,10 @@ static irqreturn_t net2272_irq(int irq, void *_dev) #if defined(PLX_PCI_RDK2) /* see if PCI int for us by checking irqstat */ intcsr = readl(dev->rdk2.fpga_base_addr + RDK2_IRQSTAT); - if (!intcsr & (1 << NET2272_PCI_IRQ)) + if (!intcsr & (1 << NET2272_PCI_IRQ)) { + spin_unlock(&dev->lock); return IRQ_NONE; + } /* check dma interrupts */ #endif /* Platform/devcice interrupt handler */ @@ -2194,7 +2196,7 @@ net2272_gadget_release(struct device *_dev) /*---------------------------------------------------------------------------*/ -static void __devexit +static void net2272_remove(struct net2272 *dev) { usb_del_gadget_udc(&dev->gadget); @@ -2210,14 +2212,12 @@ net2272_remove(struct net2272 *dev) free_irq(dev->irq, dev); iounmap(dev->base_addr); - device_unregister(&dev->gadget.dev); device_remove_file(dev->dev, &dev_attr_registers); dev_info(dev->dev, "unbind\n"); } -static struct net2272 * __devinit -net2272_probe_init(struct device *dev, unsigned int irq) +static struct net2272 *net2272_probe_init(struct device *dev, unsigned int irq) { struct net2272 *ret; @@ -2238,16 +2238,12 @@ net2272_probe_init(struct device *dev, unsigned int irq) ret->gadget.max_speed = USB_SPEED_HIGH; /* the "gadget" abstracts/virtualizes the controller */ - dev_set_name(&ret->gadget.dev, "gadget"); - ret->gadget.dev.parent = dev; - ret->gadget.dev.dma_mask = dev->dma_mask; - ret->gadget.dev.release = net2272_gadget_release; ret->gadget.name = driver_name; return ret; } -static int __devinit +static int net2272_probe_fin(struct net2272 *dev, unsigned int irqflags) { int ret; @@ -2277,14 +2273,12 @@ net2272_probe_fin(struct net2272 *dev, unsigned int irqflags) dma_mode_string()); dev_info(dev->dev, "version: %s\n", driver_vers); - ret = device_register(&dev->gadget.dev); - if (ret) - goto err_irq; ret = device_create_file(dev->dev, &dev_attr_registers); if (ret) - goto err_dev_reg; + goto err_irq; - ret = usb_add_gadget_udc(dev->dev, &dev->gadget); + ret = usb_add_gadget_udc_release(dev->dev, &dev->gadget, + net2272_gadget_release); if (ret) goto err_add_udc; @@ -2292,8 +2286,6 @@ net2272_probe_fin(struct net2272 *dev, unsigned int irqflags) err_add_udc: device_remove_file(dev->dev, &dev_attr_registers); - err_dev_reg: - device_unregister(&dev->gadget.dev); err_irq: free_irq(dev->irq, dev); err: @@ -2307,7 +2299,7 @@ err_add_udc: * don't respond over USB until a gadget driver binds to us */ -static int __devinit +static int net2272_rdk1_probe(struct pci_dev *pdev, struct net2272 *dev) { unsigned long resource, len, tmp; @@ -2390,7 +2382,7 @@ net2272_rdk1_probe(struct pci_dev *pdev, struct net2272 *dev) return ret; } -static int __devinit +static int net2272_rdk2_probe(struct pci_dev *pdev, struct net2272 *dev) { unsigned long resource, len; @@ -2448,7 +2440,7 @@ net2272_rdk2_probe(struct pci_dev *pdev, struct net2272 *dev) return ret; } -static int __devinit +static int net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct net2272 *dev; @@ -2490,7 +2482,7 @@ net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) return ret; } -static void __devexit +static void net2272_rdk1_remove(struct pci_dev *pdev, struct net2272 *dev) { int i; @@ -2512,7 +2504,7 @@ net2272_rdk1_remove(struct pci_dev *pdev, struct net2272 *dev) } } -static void __devexit +static void net2272_rdk2_remove(struct pci_dev *pdev, struct net2272 *dev) { int i; @@ -2531,7 +2523,7 @@ net2272_rdk2_remove(struct pci_dev *pdev, struct net2272 *dev) pci_resource_len(pdev, i)); } -static void __devexit +static void net2272_pci_remove(struct pci_dev *pdev) { struct net2272 *dev = pci_get_drvdata(pdev); @@ -2550,7 +2542,7 @@ net2272_pci_remove(struct pci_dev *pdev) } /* Table of matching PCI IDs */ -static struct pci_device_id __devinitdata pci_ids[] = { +static struct pci_device_id pci_ids[] = { { /* RDK 1 card */ .class = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe), .class_mask = 0, @@ -2576,7 +2568,7 @@ static struct pci_driver net2272_pci_driver = { .id_table = pci_ids, .probe = net2272_pci_probe, - .remove = __devexit_p(net2272_pci_remove), + .remove = net2272_pci_remove, }; static int net2272_pci_register(void) @@ -2596,7 +2588,7 @@ static inline void net2272_pci_unregister(void) { } /*---------------------------------------------------------------------------*/ -static int __devinit +static int net2272_plat_probe(struct platform_device *pdev) { struct net2272 *dev; @@ -2662,7 +2654,7 @@ net2272_plat_probe(struct platform_device *pdev) return ret; } -static int __devexit +static int net2272_plat_remove(struct platform_device *pdev) { struct net2272 *dev = platform_get_drvdata(pdev); @@ -2679,7 +2671,7 @@ net2272_plat_remove(struct platform_device *pdev) static struct platform_driver net2272_plat_driver = { .probe = net2272_plat_probe, - .remove = __devexit_p(net2272_plat_remove), + .remove = net2272_plat_remove, .driver = { .name = driver_name, .owner = THIS_MODULE, diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index cdedd133674..300b3a71383 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -9,7 +9,7 @@ * CODE STATUS HIGHLIGHTS * * This driver should work well with most "gadget" drivers, including - * the File Storage, Serial, and Ethernet/RNDIS gadget drivers + * the Mass Storage, Serial, and Ethernet/RNDIS gadget drivers * as well as Gadget Zero and Gadgetfs. * * DMA is enabled by default. Drivers using transfer queues might use @@ -59,14 +59,12 @@ #include <asm/byteorder.h> #include <asm/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/unaligned.h> #define DRIVER_DESC "PLX NET228x USB Peripheral Controller" #define DRIVER_VERSION "2005 Sept 27" -#define DMA_ADDR_INVALID (~(dma_addr_t)0) #define EP_DONTUSE 13 /* nonzero */ #define USE_RDK_LEDS /* GPIO pins control three LEDs */ @@ -117,6 +115,10 @@ static bool enable_suspend = 0; /* "modprobe net2280 enable_suspend=1" etc */ module_param (enable_suspend, bool, S_IRUGO); +/* force full-speed operation */ +static bool full_speed; +module_param(full_speed, bool, 0444); +MODULE_PARM_DESC(full_speed, "force full-speed mode -- for testing only!"); #define DIR_STRING(bAddress) (((bAddress) & USB_DIR_IN) ? "in" : "out") @@ -127,7 +129,7 @@ static char *type_string (u8 bmAttributes) case USB_ENDPOINT_XFER_BULK: return "bulk"; case USB_ENDPOINT_XFER_ISOC: return "iso"; case USB_ENDPOINT_XFER_INT: return "intr"; - }; + } return "control"; } #endif @@ -291,7 +293,7 @@ static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep) ep->desc = NULL; INIT_LIST_HEAD (&ep->queue); - ep->ep.maxpacket = ~0; + usb_ep_set_maxpacket_limit(&ep->ep, ~0); ep->ep.ops = &net2280_ep_ops; /* disable the dma, irqs, endpoint... */ @@ -403,7 +405,6 @@ net2280_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags) if (!req) return NULL; - req->req.dma = DMA_ADDR_INVALID; INIT_LIST_HEAD (&req->queue); /* this dma descriptor may be swapped with the previous dummy */ @@ -417,7 +418,6 @@ net2280_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags) return NULL; } td->dmacount = 0; /* not VALID */ - td->dmaaddr = cpu_to_le32 (DMA_ADDR_INVALID); td->dmadesc = td->dmaaddr; req->td = td; } @@ -806,12 +806,8 @@ done (struct net2280_ep *ep, struct net2280_request *req, int status) status = req->req.status; dev = ep->dev; - if (req->mapped) { - pci_unmap_single (dev->pdev, req->req.dma, req->req.length, - ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } + if (ep->dma) + usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in); if (status && status != -ESHUTDOWN) VDEBUG (dev, "complete %s req %p stat %d len %u/%u\n", @@ -857,10 +853,13 @@ net2280_queue (struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return -EOPNOTSUPP; /* set up dma mapping in case the caller didn't */ - if (ep->dma && _req->dma == DMA_ADDR_INVALID) { - _req->dma = pci_map_single (dev->pdev, _req->buf, _req->length, - ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); - req->mapped = 1; + if (ep->dma) { + int ret; + + ret = usb_gadget_map_request(&dev->gadget, _req, + ep->is_in); + if (ret) + return ret; } #if 0 @@ -1425,8 +1424,8 @@ static const struct usb_gadget_ops net2280_ops = { */ /* "function" sysfs attribute */ -static ssize_t -show_function (struct device *_dev, struct device_attribute *attr, char *buf) +static ssize_t function_show(struct device *_dev, struct device_attribute *attr, + char *buf) { struct net2280 *dev = dev_get_drvdata (_dev); @@ -1436,10 +1435,10 @@ show_function (struct device *_dev, struct device_attribute *attr, char *buf) return 0; return scnprintf (buf, PAGE_SIZE, "%s\n", dev->driver->function); } -static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); +static DEVICE_ATTR_RO(function); -static ssize_t net2280_show_registers(struct device *_dev, - struct device_attribute *attr, char *buf) +static ssize_t registers_show(struct device *_dev, + struct device_attribute *attr, char *buf) { struct net2280 *dev; char *next; @@ -1591,10 +1590,10 @@ static ssize_t net2280_show_registers(struct device *_dev, return PAGE_SIZE - size; } -static DEVICE_ATTR(registers, S_IRUGO, net2280_show_registers, NULL); +static DEVICE_ATTR_RO(registers); -static ssize_t -show_queues (struct device *_dev, struct device_attribute *attr, char *buf) +static ssize_t queues_show(struct device *_dev, struct device_attribute *attr, + char *buf) { struct net2280 *dev; char *next; @@ -1631,7 +1630,7 @@ show_queues (struct device *_dev, struct device_attribute *attr, char *buf) val = "intr"; break; default: val = "iso"; break; - }; val; }), + } val; }), usb_endpoint_maxp (d) & 0x1fff, ep->dma ? "dma" : "pio", ep->fifo_size ); @@ -1691,7 +1690,7 @@ done: spin_unlock_irqrestore (&dev->lock, flags); return PAGE_SIZE - size; } -static DEVICE_ATTR (queues, S_IRUGO, show_queues, NULL); +static DEVICE_ATTR_RO(queues); #else @@ -1806,9 +1805,9 @@ static void usb_reinit (struct net2280 *dev) ep->regs = &dev->epregs [tmp]; ep_reset (dev->regs, ep); } - dev->ep [0].ep.maxpacket = 64; - dev->ep [5].ep.maxpacket = 64; - dev->ep [6].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&dev->ep [0].ep, 64); + usb_ep_set_maxpacket_limit(&dev->ep [5].ep, 64); + usb_ep_set_maxpacket_limit(&dev->ep [6].ep, 64); dev->gadget.ep0 = &dev->ep [0].ep; dev->ep [0].stopped = 0; @@ -1894,13 +1893,16 @@ static int net2280_start(struct usb_gadget *_gadget, dev->softconnect = 1; driver->driver.bus = NULL; dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; retval = device_create_file (&dev->pdev->dev, &dev_attr_function); if (retval) goto err_unbind; retval = device_create_file (&dev->pdev->dev, &dev_attr_queues); if (retval) goto err_func; + /* Enable force-full-speed testing mode, if desired */ + if (full_speed) + writel(1 << FORCE_FULL_SPEED_MODE, &dev->usb->xcvrdiag); + /* ... then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ @@ -1918,8 +1920,6 @@ static int net2280_start(struct usb_gadget *_gadget, err_func: device_remove_file (&dev->pdev->dev, &dev_attr_function); err_unbind: - driver->unbind (&dev->gadget); - dev->gadget.dev.driver = NULL; dev->driver = NULL; return retval; } @@ -1940,6 +1940,13 @@ stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver) for (i = 0; i < 7; i++) nuke (&dev->ep [i]); + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&dev->lock); + driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + usb_reinit (dev); } @@ -1955,14 +1962,19 @@ static int net2280_stop(struct usb_gadget *_gadget, stop_activity (dev, driver); spin_unlock_irqrestore (&dev->lock, flags); - dev->gadget.dev.driver = NULL; dev->driver = NULL; net2280_led_active (dev, 0); + + /* Disable full-speed test mode */ + writel(0, &dev->usb->xcvrdiag); + device_remove_file (&dev->pdev->dev, &dev_attr_function); device_remove_file (&dev->pdev->dev, &dev_attr_queues); - DEBUG (dev, "unregistered driver '%s'\n", driver->driver.name); + DEBUG(dev, "unregistered driver '%s'\n", + driver ? driver->driver.name : ""); + return 0; } @@ -2056,7 +2068,7 @@ static void handle_ep_small (struct net2280_ep *ep) return; /* manual DMA queue advance after short OUT */ - if (likely (ep->dma != 0)) { + if (likely (ep->dma)) { if (t & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) { u32 count; int stopped = ep->stopped; @@ -2314,7 +2326,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat) /* hw handles device and interface status */ if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT)) goto delegate; - if ((e = get_ep_by_addr (dev, w_index)) == 0 + if ((e = get_ep_by_addr (dev, w_index)) == NULL || w_length > 2) goto do_stall; @@ -2342,7 +2354,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat) if (w_value != USB_ENDPOINT_HALT || w_length != 0) goto do_stall; - if ((e = get_ep_by_addr (dev, w_index)) == 0) + if ((e = get_ep_by_addr (dev, w_index)) == NULL) goto do_stall; if (e->wedged) { VDEBUG(dev, "%s wedged, halt not cleared\n", @@ -2364,7 +2376,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat) if (w_value != USB_ENDPOINT_HALT || w_length != 0) goto do_stall; - if ((e = get_ep_by_addr (dev, w_index)) == 0) + if ((e = get_ep_by_addr (dev, w_index)) == NULL) goto do_stall; if (e->ep.name == ep0name) goto do_stall; @@ -2669,9 +2681,7 @@ static void net2280_remove (struct pci_dev *pdev) pci_resource_len (pdev, 0)); if (dev->enabled) pci_disable_device (pdev); - device_unregister (&dev->gadget.dev); device_remove_file (&pdev->dev, &dev_attr_registers); - pci_set_drvdata (pdev, NULL); INFO (dev, "unbind\n"); } @@ -2701,10 +2711,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id) dev->gadget.max_speed = USB_SPEED_HIGH; /* the "gadget" abstracts/virtualizes the controller */ - dev_set_name(&dev->gadget.dev, "gadget"); - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; - dev->gadget.dev.release = gadget_release; dev->gadget.name = driver_name; /* now all the pci goodies ... */ @@ -2786,7 +2792,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id) goto done; } td->dmacount = 0; /* not VALID */ - td->dmaaddr = cpu_to_le32 (DMA_ADDR_INVALID); td->dmadesc = td->dmaaddr; dev->ep [i].dummy = td; } @@ -2813,12 +2818,11 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id) use_dma ? (use_dma_chaining ? "chaining" : "enabled") : "disabled"); - retval = device_register (&dev->gadget.dev); - if (retval) goto done; retval = device_create_file (&pdev->dev, &dev_attr_registers); if (retval) goto done; - retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget); + retval = usb_add_gadget_udc_release(&pdev->dev, &dev->gadget, + gadget_release); if (retval) goto done; return 0; @@ -2843,6 +2847,9 @@ static void net2280_shutdown (struct pci_dev *pdev) /* disable the pullup so the host will think we're gone */ writel (0, &dev->usb->usbctl); + + /* Disable full-speed test mode */ + writel(0, &dev->usb->xcvrdiag); } diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index c7fb7723c01..3ab38616751 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -16,12 +16,13 @@ */ #include <linux/kernel.h> -#include <linux/utsname.h> +#include <linux/module.h> #include <linux/device.h> #include "u_serial.h" #include "u_ether.h" #include "u_phonet.h" +#include "u_ecm.h" #include "gadget_chips.h" /* Defines */ @@ -29,46 +30,25 @@ #define NOKIA_VERSION_NUM 0x0211 #define NOKIA_LONG_NAME "N900 (PC-Suite Mode)" -/*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -#include "u_serial.c" -#include "f_acm.c" -#include "f_ecm.c" -#include "f_obex.c" -#include "f_serial.c" -#include "f_phonet.c" -#include "u_ether.c" - -/*-------------------------------------------------------------------------*/ +USB_ETHERNET_MODULE_PARAMETERS(); #define NOKIA_VENDOR_ID 0x0421 /* Nokia */ #define NOKIA_PRODUCT_ID 0x01c8 /* Nokia Gadget */ /* string IDs are assigned dynamically */ -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 -#define STRING_DESCRIPTION_IDX 2 +#define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX static char manufacturer_nokia[] = "Nokia"; static const char product_nokia[] = NOKIA_LONG_NAME; static const char description_nokia[] = "PC-Suite Configuration"; static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer_nokia, - [STRING_PRODUCT_IDX].s = NOKIA_LONG_NAME, + [USB_GADGET_MANUFACTURER_IDX].s = manufacturer_nokia, + [USB_GADGET_PRODUCT_IDX].s = NOKIA_LONG_NAME, + [USB_GADGET_SERIAL_IDX].s = "", [STRING_DESCRIPTION_IDX].s = description_nokia, { } /* end of list */ }; @@ -90,6 +70,7 @@ static struct usb_device_descriptor device_desc = { .bDeviceClass = USB_CLASS_COMM, .idVendor = __constant_cpu_to_le16(NOKIA_VENDOR_ID), .idProduct = __constant_cpu_to_le16(NOKIA_PRODUCT_ID), + .bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM), /* .iManufacturer = DYNAMIC */ /* .iProduct = DYNAMIC */ .bNumConfigurations = 1, @@ -103,42 +84,24 @@ MODULE_AUTHOR("Felipe Balbi"); MODULE_LICENSE("GPL"); /*-------------------------------------------------------------------------*/ +static struct usb_function *f_acm_cfg1; +static struct usb_function *f_acm_cfg2; +static struct usb_function *f_ecm_cfg1; +static struct usb_function *f_ecm_cfg2; +static struct usb_function *f_obex1_cfg1; +static struct usb_function *f_obex2_cfg1; +static struct usb_function *f_obex1_cfg2; +static struct usb_function *f_obex2_cfg2; +static struct usb_function *f_phonet_cfg1; +static struct usb_function *f_phonet_cfg2; -static u8 hostaddr[ETH_ALEN]; - -static int __init nokia_bind_config(struct usb_configuration *c) -{ - int status = 0; - - status = phonet_bind_config(c); - if (status) - printk(KERN_DEBUG "could not bind phonet config\n"); - - status = obex_bind_config(c, 0); - if (status) - printk(KERN_DEBUG "could not bind obex config %d\n", 0); - - status = obex_bind_config(c, 1); - if (status) - printk(KERN_DEBUG "could not bind obex config %d\n", 0); - - status = acm_bind_config(c, 2); - if (status) - printk(KERN_DEBUG "could not bind acm config\n"); - - status = ecm_bind_config(c, hostaddr); - if (status) - printk(KERN_DEBUG "could not bind ecm config\n"); - - return status; -} static struct usb_configuration nokia_config_500ma_driver = { .label = "Bus Powered", .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_ONE, - .bMaxPower = 250, /* 500mA */ + .MaxPower = 500, }; static struct usb_configuration nokia_config_100ma_driver = { @@ -146,108 +109,247 @@ static struct usb_configuration nokia_config_100ma_driver = { .bConfigurationValue = 2, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 50, /* 100 mA */ + .MaxPower = 100, }; -static int __init nokia_bind(struct usb_composite_dev *cdev) +static struct usb_function_instance *fi_acm; +static struct usb_function_instance *fi_ecm; +static struct usb_function_instance *fi_obex1; +static struct usb_function_instance *fi_obex2; +static struct usb_function_instance *fi_phonet; + +static int __init nokia_bind_config(struct usb_configuration *c) { - int gcnum; - struct usb_gadget *gadget = cdev->gadget; - int status; + struct usb_function *f_acm; + struct usb_function *f_phonet = NULL; + struct usb_function *f_obex1 = NULL; + struct usb_function *f_ecm; + struct usb_function *f_obex2 = NULL; + int status = 0; + int obex1_stat = -1; + int obex2_stat = -1; + int phonet_stat = -1; + + if (!IS_ERR(fi_phonet)) { + f_phonet = usb_get_function(fi_phonet); + if (IS_ERR(f_phonet)) + pr_debug("could not get phonet function\n"); + } - status = gphonet_setup(cdev->gadget); - if (status < 0) - goto err_phonet; + if (!IS_ERR(fi_obex1)) { + f_obex1 = usb_get_function(fi_obex1); + if (IS_ERR(f_obex1)) + pr_debug("could not get obex function 0\n"); + } - status = gserial_setup(cdev->gadget, 3); - if (status < 0) - goto err_serial; + if (!IS_ERR(fi_obex2)) { + f_obex2 = usb_get_function(fi_obex2); + if (IS_ERR(f_obex2)) + pr_debug("could not get obex function 1\n"); + } - status = gether_setup(cdev->gadget, hostaddr); - if (status < 0) - goto err_ether; + f_acm = usb_get_function(fi_acm); + if (IS_ERR(f_acm)) { + status = PTR_ERR(f_acm); + goto err_get_acm; + } - status = usb_string_id(cdev); - if (status < 0) - goto err_usb; - strings_dev[STRING_MANUFACTURER_IDX].id = status; + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) { + status = PTR_ERR(f_ecm); + goto err_get_ecm; + } - device_desc.iManufacturer = status; + if (!IS_ERR_OR_NULL(f_phonet)) { + phonet_stat = usb_add_function(c, f_phonet); + if (phonet_stat) + pr_debug("could not add phonet function\n"); + } - status = usb_string_id(cdev); - if (status < 0) - goto err_usb; - strings_dev[STRING_PRODUCT_IDX].id = status; + if (!IS_ERR_OR_NULL(f_obex1)) { + obex1_stat = usb_add_function(c, f_obex1); + if (obex1_stat) + pr_debug("could not add obex function 0\n"); + } + + if (!IS_ERR_OR_NULL(f_obex2)) { + obex2_stat = usb_add_function(c, f_obex2); + if (obex2_stat) + pr_debug("could not add obex function 1\n"); + } + + status = usb_add_function(c, f_acm); + if (status) + goto err_conf; + + status = usb_add_function(c, f_ecm); + if (status) { + pr_debug("could not bind ecm config %d\n", status); + goto err_ecm; + } + if (c == &nokia_config_500ma_driver) { + f_acm_cfg1 = f_acm; + f_ecm_cfg1 = f_ecm; + f_phonet_cfg1 = f_phonet; + f_obex1_cfg1 = f_obex1; + f_obex2_cfg1 = f_obex2; + } else { + f_acm_cfg2 = f_acm; + f_ecm_cfg2 = f_ecm; + f_phonet_cfg2 = f_phonet; + f_obex1_cfg2 = f_obex1; + f_obex2_cfg2 = f_obex2; + } + + return status; +err_ecm: + usb_remove_function(c, f_acm); +err_conf: + if (!obex2_stat) + usb_remove_function(c, f_obex2); + if (!obex1_stat) + usb_remove_function(c, f_obex1); + if (!phonet_stat) + usb_remove_function(c, f_phonet); + usb_put_function(f_ecm); +err_get_ecm: + usb_put_function(f_acm); +err_get_acm: + if (!IS_ERR_OR_NULL(f_obex2)) + usb_put_function(f_obex2); + if (!IS_ERR_OR_NULL(f_obex1)) + usb_put_function(f_obex1); + if (!IS_ERR_OR_NULL(f_phonet)) + usb_put_function(f_phonet); + return status; +} - device_desc.iProduct = status; +static int __init nokia_bind(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int status; - /* config description */ - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) goto err_usb; - strings_dev[STRING_DESCRIPTION_IDX].id = status; - + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + status = strings_dev[STRING_DESCRIPTION_IDX].id; nokia_config_500ma_driver.iConfiguration = status; nokia_config_100ma_driver.iConfiguration = status; - /* set up other descriptors */ - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM); - else { - /* this should only work with hw that supports altsettings - * and several endpoints, anything else, panic. - */ - pr_err("nokia_bind: controller '%s' not recognized\n", - gadget->name); + if (!gadget_supports_altsettings(gadget)) { + status = -ENODEV; goto err_usb; } + fi_phonet = usb_get_function_instance("phonet"); + if (IS_ERR(fi_phonet)) + pr_debug("could not find phonet function\n"); + + fi_obex1 = usb_get_function_instance("obex"); + if (IS_ERR(fi_obex1)) + pr_debug("could not find obex function 1\n"); + + fi_obex2 = usb_get_function_instance("obex"); + if (IS_ERR(fi_obex2)) + pr_debug("could not find obex function 2\n"); + + fi_acm = usb_get_function_instance("acm"); + if (IS_ERR(fi_acm)) { + status = PTR_ERR(fi_acm); + goto err_obex2_inst; + } + + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) { + status = PTR_ERR(fi_ecm); + goto err_acm_inst; + } + /* finally register the configuration */ status = usb_add_config(cdev, &nokia_config_500ma_driver, nokia_bind_config); if (status < 0) - goto err_usb; + goto err_ecm_inst; status = usb_add_config(cdev, &nokia_config_100ma_driver, nokia_bind_config); if (status < 0) - goto err_usb; + goto err_put_cfg1; + usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME); return 0; +err_put_cfg1: + usb_put_function(f_acm_cfg1); + if (!IS_ERR_OR_NULL(f_obex1_cfg1)) + usb_put_function(f_obex1_cfg1); + if (!IS_ERR_OR_NULL(f_obex2_cfg1)) + usb_put_function(f_obex2_cfg1); + if (!IS_ERR_OR_NULL(f_phonet_cfg1)) + usb_put_function(f_phonet_cfg1); + usb_put_function(f_ecm_cfg1); +err_ecm_inst: + usb_put_function_instance(fi_ecm); +err_acm_inst: + usb_put_function_instance(fi_acm); +err_obex2_inst: + if (!IS_ERR(fi_obex2)) + usb_put_function_instance(fi_obex2); + if (!IS_ERR(fi_obex1)) + usb_put_function_instance(fi_obex1); + if (!IS_ERR(fi_phonet)) + usb_put_function_instance(fi_phonet); err_usb: - gether_cleanup(); -err_ether: - gserial_cleanup(); -err_serial: - gphonet_cleanup(); -err_phonet: return status; } static int __exit nokia_unbind(struct usb_composite_dev *cdev) { - gphonet_cleanup(); - gserial_cleanup(); - gether_cleanup(); + if (!IS_ERR_OR_NULL(f_obex1_cfg2)) + usb_put_function(f_obex1_cfg2); + if (!IS_ERR_OR_NULL(f_obex2_cfg2)) + usb_put_function(f_obex2_cfg2); + if (!IS_ERR_OR_NULL(f_obex1_cfg1)) + usb_put_function(f_obex1_cfg1); + if (!IS_ERR_OR_NULL(f_obex2_cfg1)) + usb_put_function(f_obex2_cfg1); + if (!IS_ERR_OR_NULL(f_phonet_cfg1)) + usb_put_function(f_phonet_cfg1); + if (!IS_ERR_OR_NULL(f_phonet_cfg2)) + usb_put_function(f_phonet_cfg2); + usb_put_function(f_acm_cfg1); + usb_put_function(f_acm_cfg2); + usb_put_function(f_ecm_cfg1); + usb_put_function(f_ecm_cfg2); + + usb_put_function_instance(fi_ecm); + if (!IS_ERR(fi_obex2)) + usb_put_function_instance(fi_obex2); + if (!IS_ERR(fi_obex1)) + usb_put_function_instance(fi_obex1); + if (!IS_ERR(fi_phonet)) + usb_put_function_instance(fi_phonet); + usb_put_function_instance(fi_acm); return 0; } -static struct usb_composite_driver nokia_driver = { +static __refdata struct usb_composite_driver nokia_driver = { .name = "g_nokia", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_HIGH, + .bind = nokia_bind, .unbind = __exit_p(nokia_unbind), }; static int __init nokia_init(void) { - return usb_composite_probe(&nokia_driver, nokia_bind); + return usb_composite_probe(&nokia_driver); } module_init(nokia_init); @@ -256,4 +358,3 @@ static void __exit nokia_cleanup(void) usb_composite_unregister(&nokia_driver); } module_exit(nokia_cleanup); - diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index 576cd8578b4..2ae4f6d69f7 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -22,7 +22,6 @@ #include <linux/errno.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> @@ -35,17 +34,18 @@ #include <linux/usb/otg.h> #include <linux/dma-mapping.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/prefetch.h> +#include <linux/io.h> #include <asm/byteorder.h> -#include <asm/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/unaligned.h> #include <asm/mach-types.h> -#include <plat/dma.h> -#include <plat/usb.h> +#include <linux/omap-dma.h> + +#include <mach/usb.h> #include "omap_udc.h" @@ -60,10 +60,8 @@ #define DRIVER_DESC "OMAP UDC driver" #define DRIVER_VERSION "4 October 2004" -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - -#define OMAP2_DMA_CH(ch) (((ch) - 1) << 1) -#define OMAP24XX_DMA(name, ch) (OMAP24XX_DMA_##name + OMAP2_DMA_CH(ch)) +#define OMAP_DMA_USB_W2FC_TX0 29 +#define OMAP_DMA_USB_W2FC_RX0 26 /* * The OMAP UDC needs _very_ early endpoint setup: before enabling the @@ -88,14 +86,14 @@ #ifdef USE_ISO static unsigned fifo_mode = 3; #else -static unsigned fifo_mode = 0; +static unsigned fifo_mode; #endif /* "modprobe omap_udc fifo_mode=42", or else as a kernel * boot parameter "omap_udc:fifo_mode=42" */ -module_param (fifo_mode, uint, 0); -MODULE_PARM_DESC (fifo_mode, "endpoint configuration"); +module_param(fifo_mode, uint, 0); +MODULE_PARM_DESC(fifo_mode, "endpoint configuration"); #ifdef USE_DMA static bool use_dma = 1; @@ -103,8 +101,8 @@ static bool use_dma = 1; /* "modprobe omap_udc use_dma=y", or else as a kernel * boot parameter "omap_udc:use_dma=y" */ -module_param (use_dma, bool, 0); -MODULE_PARM_DESC (use_dma, "enable/disable DMA"); +module_param(use_dma, bool, 0); +MODULE_PARM_DESC(use_dma, "enable/disable DMA"); #else /* !USE_DMA */ /* save a bit of code */ @@ -112,8 +110,8 @@ MODULE_PARM_DESC (use_dma, "enable/disable DMA"); #endif /* !USE_DMA */ -static const char driver_name [] = "omap_udc"; -static const char driver_desc [] = DRIVER_DESC; +static const char driver_name[] = "omap_udc"; +static const char driver_desc[] = DRIVER_DESC; /*-------------------------------------------------------------------------*/ @@ -154,7 +152,7 @@ static int omap_ep_enable(struct usb_ep *_ep, u16 maxp; /* catch various bogus parameters */ - if (!_ep || !desc || ep->desc + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT || ep->bEndpointAddress != desc->bEndpointAddress || ep->maxpacket < usb_endpoint_maxp(desc)) { @@ -201,7 +199,7 @@ static int omap_ep_enable(struct usb_ep *_ep, spin_lock_irqsave(&udc->lock, flags); - ep->desc = desc; + ep->ep.desc = desc; ep->irqs = 0; ep->stopped = 0; ep->ep.maxpacket = maxp; @@ -243,15 +241,15 @@ static int omap_ep_disable(struct usb_ep *_ep) struct omap_ep *ep = container_of(_ep, struct omap_ep, ep); unsigned long flags; - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { DBG("%s, %s not enabled\n", __func__, _ep ? ep->ep.name : NULL); return -EINVAL; } spin_lock_irqsave(&ep->udc->lock, flags); - ep->desc = NULL; - nuke (ep, -ESHUTDOWN); + ep->ep.desc = NULL; + nuke(ep, -ESHUTDOWN); ep->ep.maxpacket = ep->maxpacket; ep->has_dma = 0; omap_writew(UDC_SET_HALT, UDC_CTRL); @@ -272,10 +270,11 @@ omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) struct omap_req *req; req = kzalloc(sizeof(*req), gfp_flags); - if (req) { - req->req.dma = DMA_ADDR_INVALID; - INIT_LIST_HEAD (&req->queue); - } + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + return &req->req; } @@ -284,8 +283,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req) { struct omap_req *req = container_of(_req, struct omap_req, req); - if (_req) - kfree (req); + kfree(req); } /*-------------------------------------------------------------------------*/ @@ -293,6 +291,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req) static void done(struct omap_ep *ep, struct omap_req *req, int status) { + struct omap_udc *udc = ep->udc; unsigned stopped = ep->stopped; list_del_init(&req->queue); @@ -302,22 +301,9 @@ done(struct omap_ep *ep, struct omap_req *req, int status) else status = req->req.status; - if (use_dma && ep->has_dma) { - if (req->mapped) { - dma_unmap_single(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else - dma_sync_single_for_cpu(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - } + if (use_dma && ep->has_dma) + usb_gadget_unmap_request(&udc->gadget, &req->req, + (ep->bEndpointAddress & USB_DIR_IN)); #ifndef USB_TRACE if (status && status != -ESHUTDOWN) @@ -365,10 +351,10 @@ write_packet(u8 *buf, struct omap_req *req, unsigned max) return len; } -// FIXME change r/w fifo calling convention +/* FIXME change r/w fifo calling convention */ -// return: 0 = still running, 1 = completed, negative = errno +/* return: 0 = still running, 1 = completed, negative = errno */ static int write_fifo(struct omap_ep *ep, struct omap_req *req) { u8 *buf; @@ -430,7 +416,7 @@ read_packet(u8 *buf, struct omap_req *req, unsigned avail) return len; } -// return: 0 = still running, 1 = queue empty, negative = errno +/* return: 0 = still running, 1 = queue empty, negative = errno */ static int read_fifo(struct omap_ep *ep, struct omap_req *req) { u8 *buf; @@ -537,12 +523,8 @@ static void next_in_dma(struct omap_ep *ep, struct omap_req *req) : OMAP_DMA_SYNC_ELEMENT; int dma_trigger = 0; - if (cpu_is_omap24xx()) - dma_trigger = OMAP24XX_DMA(USB_W2FC_TX0, ep->dma_channel); - /* measure length in either bytes or packets */ if ((cpu_is_omap16xx() && length <= UDC_TXN_TSC) - || (cpu_is_omap24xx() && length < ep->maxpacket) || (cpu_is_omap15xx() && length < ep->maxpacket)) { txdma_ctrl = UDC_TXN_EOT | length; omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8, @@ -601,28 +583,14 @@ static void next_out_dma(struct omap_ep *ep, struct omap_req *req) int dma_trigger = 0; u16 w; - if (cpu_is_omap24xx()) - dma_trigger = OMAP24XX_DMA(USB_W2FC_RX0, ep->dma_channel); - - /* NOTE: we filtered out "short reads" before, so we know - * the buffer has only whole numbers of packets. - * except MODE SELECT(6) sent the 24 bytes data in OMAP24XX DMA mode - */ - if (cpu_is_omap24xx() && packets < ep->maxpacket) { - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8, - packets, 1, OMAP_DMA_SYNC_ELEMENT, - dma_trigger, 0); - req->dma_bytes = packets; - } else { - /* set up this DMA transfer, enable the fifo, start */ - packets /= ep->ep.maxpacket; - packets = min(packets, (unsigned)UDC_RXN_TC + 1); - req->dma_bytes = packets * ep->ep.maxpacket; - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, - ep->ep.maxpacket >> 1, packets, - OMAP_DMA_SYNC_ELEMENT, - dma_trigger, 0); - } + /* set up this DMA transfer, enable the fifo, start */ + packets /= ep->ep.maxpacket; + packets = min(packets, (unsigned)UDC_RXN_TC + 1); + req->dma_bytes = packets * ep->ep.maxpacket; + omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, + ep->ep.maxpacket >> 1, packets, + OMAP_DMA_SYNC_ELEMENT, + dma_trigger, 0); omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF, OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual, 0, 0); @@ -684,7 +652,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src) } omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC); - if (!list_empty (&ep->queue)) { + if (!list_empty(&ep->queue)) { req = container_of(ep->queue.next, struct omap_req, queue); next_in_dma(ep, req); @@ -703,7 +671,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src) } omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC); - if (!list_empty (&ep->queue)) { + if (!list_empty(&ep->queue)) { req = container_of(ep->queue.next, struct omap_req, queue); next_out_dma(ep, req); @@ -761,10 +729,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel) ep->dma_channel = channel; if (is_in) { - if (cpu_is_omap24xx()) - dma_channel = OMAP24XX_DMA(USB_W2FC_TX0, channel); - else - dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel; + dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel; status = omap_request_dma(dma_channel, ep->ep.name, dma_error, ep, &ep->lch); if (status == 0) { @@ -781,11 +746,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel) 0, 0); } } else { - if (cpu_is_omap24xx()) - dma_channel = OMAP24XX_DMA(USB_W2FC_RX0, channel); - else - dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel; - + dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel; status = omap_request_dma(dma_channel, ep->ep.name, dma_error, ep, &ep->lch); if (status == 0) { @@ -809,7 +770,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel) omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ); /* channel type P: hw synch (fifo) */ - if (cpu_class_is_omap1() && !cpu_is_omap15xx()) + if (!cpu_is_omap15xx()) omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P); } @@ -917,7 +878,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) DBG("%s, bad params\n", __func__); return -EINVAL; } - if (!_ep || (!ep->desc && ep->bEndpointAddress)) { + if (!_ep || (!ep->ep.desc && ep->bEndpointAddress)) { DBG("%s, bad ep\n", __func__); return -EINVAL; } @@ -929,13 +890,11 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* this isn't bogus, but OMAP DMA isn't the only hardware to * have a hard time with partial packet reads... reject it. - * Except OMAP2 can handle the small packets. */ if (use_dma && ep->has_dma && ep->bEndpointAddress != 0 && (ep->bEndpointAddress & USB_DIR_IN) == 0 - && !cpu_class_is_omap2() && (req->req.length % ep->ep.maxpacket) != 0) { DBG("%s, no partial packet OUT reads\n", __func__); return -EMSGSIZE; @@ -945,26 +904,9 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; - if (use_dma && ep->has_dma) { - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single( - ep->udc->gadget.dev.parent, - req->req.buf, - req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 1; - } else { - dma_sync_single_for_device( - ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 0; - } - } + if (use_dma && ep->has_dma) + usb_gadget_map_request(&udc->gadget, &req->req, + (ep->bEndpointAddress & USB_DIR_IN)); VDBG("%s queue req %p, len %d buf %p\n", ep->ep.name, _req, _req->length, _req->buf); @@ -985,7 +927,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) int is_in; if (ep->bEndpointAddress == 0) { - if (!udc->ep0_pending || !list_empty (&ep->queue)) { + if (!udc->ep0_pending || !list_empty(&ep->queue)) { spin_unlock_irqrestore(&udc->lock, flags); return -EL2HLT; } @@ -1012,7 +954,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) * always an IN ... even for IN transfers, * a weird case which seem to stall OMAP. */ - omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM); + omap_writew(UDC_EP_SEL | UDC_EP_DIR, + UDC_EP_NUM); omap_writew(UDC_CLR_EP, UDC_CTRL); omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); omap_writew(UDC_EP_DIR, UDC_EP_NUM); @@ -1024,7 +967,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* non-empty DATA stage */ } else if (is_in) { - omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM); + omap_writew(UDC_EP_SEL | UDC_EP_DIR, + UDC_EP_NUM); } else { if (udc->ep0_setup) goto irq_wait; @@ -1072,7 +1016,7 @@ static int omap_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) spin_lock_irqsave(&ep->udc->lock, flags); /* make sure it's actually queued on this endpoint */ - list_for_each_entry (req, &ep->queue, queue) { + list_for_each_entry(req, &ep->queue, queue) { if (&req->req == _req) break; } @@ -1121,7 +1065,7 @@ static int omap_ep_set_halt(struct usb_ep *_ep, int value) status = 0; /* otherwise, all active non-ISO endpoints can halt */ - } else if (ep->bmAttributes != USB_ENDPOINT_XFER_ISOC && ep->desc) { + } else if (ep->bmAttributes != USB_ENDPOINT_XFER_ISOC && ep->ep.desc) { /* IN endpoints must already be idle */ if ((ep->bEndpointAddress & USB_DIR_IN) @@ -1179,8 +1123,8 @@ static struct usb_ep_ops omap_ep_ops = { .dequeue = omap_ep_dequeue, .set_halt = omap_ep_set_halt, - // fifo_status ... report bytes in fifo - // fifo_flush ... flush fifo + /* fifo_status ... report bytes in fifo */ + /* fifo_flush ... flush fifo */ }; /*-------------------------------------------------------------------------*/ @@ -1212,8 +1156,8 @@ static int omap_wakeup(struct usb_gadget *gadget) /* NOTE: non-OTG systems may use SRP TOO... */ } else if (!(udc->devstat & UDC_ATT)) { - if (udc->transceiver) - retval = otg_start_srp(udc->transceiver); + if (!IS_ERR_OR_NULL(udc->transceiver)) + retval = otg_start_srp(udc->transceiver->otg); } spin_unlock_irqrestore(&udc->lock, flags); @@ -1344,8 +1288,8 @@ static int omap_vbus_draw(struct usb_gadget *gadget, unsigned mA) struct omap_udc *udc; udc = container_of(gadget, struct omap_udc, gadget); - if (udc->transceiver) - return otg_set_power(udc->transceiver, mA); + if (!IS_ERR_OR_NULL(udc->transceiver)) + return usb_phy_set_power(udc->transceiver, mA); return -EOPNOTSUPP; } @@ -1365,19 +1309,20 @@ static int omap_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static int omap_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int omap_udc_stop(struct usb_gadget_driver *driver); +static int omap_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int omap_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); -static struct usb_gadget_ops omap_gadget_ops = { +static const struct usb_gadget_ops omap_gadget_ops = { .get_frame = omap_get_frame, .wakeup = omap_wakeup, .set_selfpowered = omap_set_selfpowered, .vbus_session = omap_vbus_session, .vbus_draw = omap_vbus_draw, .pullup = omap_pullup, - .start = omap_udc_start, - .stop = omap_udc_stop, + .udc_start = omap_udc_start, + .udc_stop = omap_udc_stop, }; /*-------------------------------------------------------------------------*/ @@ -1410,7 +1355,7 @@ static void udc_quiesce(struct omap_udc *udc) udc->gadget.speed = USB_SPEED_UNKNOWN; nuke(&udc->ep[0], -ESHUTDOWN); - list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) nuke(ep, -ESHUTDOWN); } @@ -1526,7 +1471,8 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src) /* read next OUT packet of request, maybe * reactiviting the fifo; stall on errors. */ - if (!req || (stat = read_fifo(ep0, req)) < 0) { + stat = read_fifo(ep0, req); + if (!req || stat < 0) { omap_writew(UDC_STALL_CMD, UDC_SYSCON2); udc->ep0_pending = 0; stat = 0; @@ -1625,7 +1571,7 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src) if (w_index & USB_DIR_IN) ep += 16; if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC - || !ep->desc) + || !ep->ep.desc) goto do_stall; use_ep(ep, 0); omap_writew(udc->clr_halt, UDC_CTRL); @@ -1653,13 +1599,13 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src) if (w_index & USB_DIR_IN) ep += 16; if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC - || ep == ep0 || !ep->desc) + || ep == ep0 || !ep->ep.desc) goto do_stall; if (use_dma && ep->has_dma) { /* this has rude side-effects (aborts) and * can't really work if DMA-IN is active */ - DBG("%s host set_halt, NYET \n", ep->name); + DBG("%s host set_halt, NYET\n", ep->name); goto do_stall; } use_ep(ep, 0); @@ -1688,7 +1634,7 @@ ep0out_status_stage: ep = &udc->ep[w_index & 0xf]; if (w_index & USB_DIR_IN) ep += 16; - if (!ep->desc) + if (!ep->ep.desc) goto do_stall; /* iso never stalls */ @@ -1750,7 +1696,7 @@ delegate: */ udc->ep0_setup = 1; spin_unlock(&udc->lock); - status = udc->driver->setup (&udc->gadget, &u.r); + status = udc->driver->setup(&udc->gadget, &u.r); spin_lock(&udc->lock); udc->ep0_setup = 0; } @@ -1793,12 +1739,12 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src) if (devstat & UDC_ATT) { udc->gadget.speed = USB_SPEED_FULL; VDBG("connect\n"); - if (!udc->transceiver) + if (IS_ERR_OR_NULL(udc->transceiver)) pullup_enable(udc); - // if (driver->connect) call it + /* if (driver->connect) call it */ } else if (udc->gadget.speed != USB_SPEED_UNKNOWN) { udc->gadget.speed = USB_SPEED_UNKNOWN; - if (!udc->transceiver) + if (IS_ERR_OR_NULL(udc->transceiver)) pullup_disable(udc); DBG("disconnect, gadget %s\n", udc->driver->driver.name); @@ -1827,7 +1773,7 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src) } if (change & UDC_SUS) { if (udc->gadget.speed != USB_SPEED_UNKNOWN) { - // FIXME tell isp1301 to suspend/resume (?) + /* FIXME tell isp1301 to suspend/resume (?) */ if (devstat & UDC_SUS) { VDBG("suspend\n"); update_otg(udc); @@ -1838,12 +1784,14 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src) udc->driver->suspend(&udc->gadget); spin_lock(&udc->lock); } - if (udc->transceiver) - otg_set_suspend(udc->transceiver, 1); + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_phy_set_suspend( + udc->transceiver, 1); } else { VDBG("resume\n"); - if (udc->transceiver) - otg_set_suspend(udc->transceiver, 0); + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_phy_set_suspend( + udc->transceiver, 0); if (udc->gadget.speed == USB_SPEED_FULL && udc->driver->resume) { spin_unlock(&udc->lock); @@ -2028,7 +1976,7 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev) spin_lock_irqsave(&udc->lock, flags); /* handle all non-DMA ISO transfers */ - list_for_each_entry (ep, &udc->iso, iso) { + list_for_each_entry(ep, &udc->iso, iso) { u16 stat; struct omap_req *req; @@ -2087,41 +2035,24 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev) static inline int machine_without_vbus_sense(void) { - return (machine_is_omap_innovator() + return machine_is_omap_innovator() || machine_is_omap_osk() - || machine_is_omap_apollon() -#ifndef CONFIG_MACH_OMAP_H4_OTG - || machine_is_omap_h4() -#endif || machine_is_sx1() - || cpu_is_omap7xx() /* No known omap7xx boards with vbus sense */ - ); + /* No known omap7xx boards with vbus sense */ + || cpu_is_omap7xx(); } -static int omap_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int omap_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { int status = -ENODEV; struct omap_ep *ep; unsigned long flags; - /* basic sanity tests */ - if (!udc) - return -ENODEV; - if (!driver - // FIXME if otg, check: driver->is_otg - || driver->max_speed < USB_SPEED_FULL - || !bind || !driver->setup) - return -EINVAL; spin_lock_irqsave(&udc->lock, flags); - if (udc->driver) { - spin_unlock_irqrestore(&udc->lock, flags); - return -EBUSY; - } - /* reset state */ - list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { ep->irqs = 0; if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) continue; @@ -2135,40 +2066,30 @@ static int omap_udc_start(struct usb_gadget_driver *driver, /* hook up the driver */ driver->driver.bus = NULL; udc->driver = driver; - udc->gadget.dev.driver = &driver->driver; spin_unlock_irqrestore(&udc->lock, flags); if (udc->dc_clk != NULL) omap_udc_enable_clock(1); - status = bind(&udc->gadget); - if (status) { - DBG("bind to %s --> %d\n", driver->driver.name, status); - udc->gadget.dev.driver = NULL; - udc->driver = NULL; - goto done; - } - DBG("bound to driver %s\n", driver->driver.name); - omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC); /* connect to bus through transceiver */ - if (udc->transceiver) { - status = otg_set_peripheral(udc->transceiver, &udc->gadget); + if (!IS_ERR_OR_NULL(udc->transceiver)) { + status = otg_set_peripheral(udc->transceiver->otg, + &udc->gadget); if (status < 0) { ERR("can't bind to transceiver\n"); if (driver->unbind) { - driver->unbind (&udc->gadget); - udc->gadget.dev.driver = NULL; + driver->unbind(&udc->gadget); udc->driver = NULL; } goto done; } } else { if (can_pullup(udc)) - pullup_enable (udc); + pullup_enable(udc); else - pullup_disable (udc); + pullup_disable(udc); } /* boards that don't have VBUS sensing can't autogate 48MHz; @@ -2180,27 +2101,24 @@ static int omap_udc_start(struct usb_gadget_driver *driver, done: if (udc->dc_clk != NULL) omap_udc_enable_clock(0); + return status; } -static int omap_udc_stop(struct usb_gadget_driver *driver) +static int omap_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { unsigned long flags; int status = -ENODEV; - if (!udc) - return -ENODEV; - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; - if (udc->dc_clk != NULL) omap_udc_enable_clock(1); if (machine_without_vbus_sense()) omap_vbus_session(&udc->gadget, 0); - if (udc->transceiver) - (void) otg_set_peripheral(udc->transceiver, NULL); + if (!IS_ERR_OR_NULL(udc->transceiver)) + (void) otg_set_peripheral(udc->transceiver->otg, NULL); else pullup_disable(udc); @@ -2208,13 +2126,11 @@ static int omap_udc_stop(struct usb_gadget_driver *driver) udc_quiesce(udc); spin_unlock_irqrestore(&udc->lock, flags); - driver->unbind(&udc->gadget); - udc->gadget.dev.driver = NULL; udc->driver = NULL; if (udc->dc_clk != NULL) omap_udc_enable_clock(0); - DBG("unregistered driver '%s'\n", driver->driver.name); + return status; } @@ -2227,7 +2143,7 @@ static int omap_udc_stop(struct usb_gadget_driver *driver) static const char proc_filename[] = "driver/udc"; #define FOURBITS "%s%s%s%s" -#define EIGHTBITS FOURBITS FOURBITS +#define EIGHTBITS "%s%s%s%s%s%s%s%s" static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) { @@ -2249,12 +2165,21 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) "\n%s %s%s%sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n", ep->name, buf, ep->double_buf ? "dbuf " : "", - ({char *s; switch(ep->ackwait){ - case 0: s = ""; break; - case 1: s = "(ackw) "; break; - case 2: s = "(ackw2) "; break; - default: s = "(?) "; break; - } s;}), + ({ char *s; + switch (ep->ackwait) { + case 0: + s = ""; + break; + case 1: + s = "(ackw) "; + break; + case 2: + s = "(ackw2) "; + break; + default: + s = "(?) "; + break; + } s; }), ep->irqs, stat_flg, (stat_flg & UDC_NO_RXPACKET) ? "no_rxpacket " : "", (stat_flg & UDC_MISS_IN) ? "miss_in " : "", @@ -2270,10 +2195,10 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) (stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "", (stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : ""); - if (list_empty (&ep->queue)) + if (list_empty(&ep->queue)) seq_printf(s, "\t(queue empty)\n"); else - list_for_each_entry (req, &ep->queue, queue) { + list_for_each_entry(req, &ep->queue, queue) { unsigned length = req->req.actual; if (use_dma && buf[0]) { @@ -2291,11 +2216,16 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) static char *trx_mode(unsigned m, int enabled) { switch (m) { - case 0: return enabled ? "*6wire" : "unused"; - case 1: return "4wire"; - case 2: return "3wire"; - case 3: return "6wire"; - default: return "unknown"; + case 0: + return enabled ? "*6wire" : "unused"; + case 1: + return "4wire"; + case 2: + return "3wire"; + case 3: + return "6wire"; + default: + return "unknown"; } } @@ -2305,12 +2235,9 @@ static int proc_otg_show(struct seq_file *s) u32 trans = 0; char *ctrl_name = "(UNKNOWN)"; - /* XXX This needs major revision for OMAP2+ */ tmp = omap_readl(OTG_REV); - if (cpu_class_is_omap1()) { - ctrl_name = "tranceiver_ctrl"; - trans = omap_readw(USB_TRANSCEIVER_CTRL); - } + ctrl_name = "tranceiver_ctrl"; + trans = omap_readw(USB_TRANSCEIVER_CTRL); seq_printf(s, "\nOTG rev %d.%d, %s %05x\n", tmp >> 4, tmp & 0xf, ctrl_name, trans); tmp = omap_readw(OTG_SYSCON_1); @@ -2330,7 +2257,7 @@ static int proc_otg_show(struct seq_file *s) " b_ase_brst=%d hmc=%d\n", tmp, (tmp & OTG_EN) ? " otg_en" : "", (tmp & USBX_SYNCHRO) ? " synchro" : "", - // much more SRP stuff + /* much more SRP stuff */ (tmp & SRP_DATA) ? " srp_data" : "", (tmp & SRP_VBUS) ? " srp_vbus" : "", (tmp & OTG_PADEN) ? " otg_paden" : "", @@ -2397,14 +2324,12 @@ static int proc_udc_show(struct seq_file *s, void *_) HMC, udc->transceiver ? udc->transceiver->label - : ((cpu_is_omap1710() || cpu_is_omap24xx()) + : (cpu_is_omap1710() ? "external" : "(none)")); - if (cpu_class_is_omap1()) { - seq_printf(s, "ULPD control %04x req %04x status %04x\n", - omap_readw(ULPD_CLOCK_CTRL), - omap_readw(ULPD_SOFT_REQ), - omap_readw(ULPD_STATUS_REQ)); - } + seq_printf(s, "ULPD control %04x req %04x status %04x\n", + omap_readw(ULPD_CLOCK_CTRL), + omap_readw(ULPD_SOFT_REQ), + omap_readw(ULPD_STATUS_REQ)); /* OTG controller registers */ if (!cpu_is_omap15xx()) @@ -2420,7 +2345,7 @@ static int proc_udc_show(struct seq_file *s, void *_) (tmp & UDC_SELF_PWR) ? " self_pwr" : "", (tmp & UDC_SOFF_DIS) ? " soff_dis" : "", (tmp & UDC_PULLUP_EN) ? " PULLUP" : ""); - // syscon2 is write-only + /* syscon2 is write-only */ /* UDC controller registers */ if (!(tmp & UDC_PULLUP_EN)) { @@ -2504,9 +2429,9 @@ static int proc_udc_show(struct seq_file *s, void *_) if (tmp & UDC_ATT) { proc_ep_show(s, &udc->ep[0]); if (tmp & UDC_ADD) { - list_for_each_entry (ep, &udc->gadget.ep_list, + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - if (ep->desc) + if (ep->ep.desc) proc_ep_show(s, ep); } } @@ -2555,7 +2480,7 @@ static inline void remove_proc_file(void) {} * UDC_SYSCON_1.CFG_LOCK is set can now work. We won't use that * capability yet though. */ -static unsigned __init +static unsigned omap_ep_setup(char *name, u8 addr, u8 type, unsigned buf, unsigned maxp, int dbuf) { @@ -2573,14 +2498,29 @@ omap_ep_setup(char *name, u8 addr, u8 type, /* chip setup ... bit values are same for IN, OUT */ if (type == USB_ENDPOINT_XFER_ISOC) { switch (maxp) { - case 8: epn_rxtx = 0 << 12; break; - case 16: epn_rxtx = 1 << 12; break; - case 32: epn_rxtx = 2 << 12; break; - case 64: epn_rxtx = 3 << 12; break; - case 128: epn_rxtx = 4 << 12; break; - case 256: epn_rxtx = 5 << 12; break; - case 512: epn_rxtx = 6 << 12; break; - default: BUG(); + case 8: + epn_rxtx = 0 << 12; + break; + case 16: + epn_rxtx = 1 << 12; + break; + case 32: + epn_rxtx = 2 << 12; + break; + case 64: + epn_rxtx = 3 << 12; + break; + case 128: + epn_rxtx = 4 << 12; + break; + case 256: + epn_rxtx = 5 << 12; + break; + case 512: + epn_rxtx = 6 << 12; + break; + default: + BUG(); } epn_rxtx |= UDC_EPN_RX_ISO; dbuf = 1; @@ -2589,15 +2529,24 @@ omap_ep_setup(char *name, u8 addr, u8 type, * and ignored for PIO-IN on newer chips * (for more reliable behavior) */ - if (!use_dma || cpu_is_omap15xx() || cpu_is_omap24xx()) + if (!use_dma || cpu_is_omap15xx()) dbuf = 0; switch (maxp) { - case 8: epn_rxtx = 0 << 12; break; - case 16: epn_rxtx = 1 << 12; break; - case 32: epn_rxtx = 2 << 12; break; - case 64: epn_rxtx = 3 << 12; break; - default: BUG(); + case 8: + epn_rxtx = 0 << 12; + break; + case 16: + epn_rxtx = 1 << 12; + break; + case 32: + epn_rxtx = 2 << 12; + break; + case 64: + epn_rxtx = 3 << 12; + break; + default: + BUG(); } if (dbuf && addr) epn_rxtx |= UDC_EPN_RX_DB; @@ -2636,8 +2585,9 @@ omap_ep_setup(char *name, u8 addr, u8 type, ep->ep.name = ep->name; ep->ep.ops = &omap_ep_ops; - ep->ep.maxpacket = ep->maxpacket = maxp; - list_add_tail (&ep->ep.ep_list, &udc->gadget.ep_list); + ep->maxpacket = maxp; + usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); return buf; } @@ -2645,12 +2595,12 @@ omap_ep_setup(char *name, u8 addr, u8 type, static void omap_udc_release(struct device *dev) { complete(udc->done); - kfree (udc); + kfree(udc); udc = NULL; } -static int __init -omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv) +static int +omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv) { unsigned tmp, buf; @@ -2663,13 +2613,13 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv) omap_writew(0, UDC_TXDMA_CFG); /* UDC_PULLUP_EN gates the chip clock */ - // OTG_SYSCON_1 |= DEV_IDLE_EN; + /* OTG_SYSCON_1 |= DEV_IDLE_EN; */ udc = kzalloc(sizeof(*udc), GFP_KERNEL); if (!udc) return -ENOMEM; - spin_lock_init (&udc->lock); + spin_lock_init(&udc->lock); udc->gadget.ops = &omap_gadget_ops; udc->gadget.ep0 = &udc->ep[0].ep; @@ -2678,14 +2628,6 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv) udc->gadget.speed = USB_SPEED_UNKNOWN; udc->gadget.max_speed = USB_SPEED_FULL; udc->gadget.name = driver_name; - - device_initialize(&udc->gadget.dev); - dev_set_name(&udc->gadget.dev, "gadget"); - udc->gadget.dev.release = omap_udc_release; - udc->gadget.dev.parent = &odev->dev; - if (use_dma) - udc->gadget.dev.dma_mask = odev->dev.dma_mask; - udc->transceiver = xceiv; /* ep0 is special; put it right after the SETUP buffer */ @@ -2699,13 +2641,13 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv) omap_writew(0, UDC_EP_TX(tmp)); } -#define OMAP_BULK_EP(name,addr) \ +#define OMAP_BULK_EP(name, addr) \ buf = omap_ep_setup(name "-bulk", addr, \ USB_ENDPOINT_XFER_BULK, buf, 64, 1); -#define OMAP_INT_EP(name,addr, maxp) \ +#define OMAP_INT_EP(name, addr, maxp) \ buf = omap_ep_setup(name "-int", addr, \ USB_ENDPOINT_XFER_INT, buf, maxp, 0); -#define OMAP_ISO_EP(name,addr, maxp) \ +#define OMAP_ISO_EP(name, addr, maxp) \ buf = omap_ep_setup(name "-iso", addr, \ USB_ENDPOINT_XFER_ISOC, buf, maxp, 1); @@ -2786,15 +2728,18 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv) return 0; } -static int __init omap_udc_probe(struct platform_device *pdev) +static int omap_udc_probe(struct platform_device *pdev) { int status = -ENODEV; int hmc; - struct otg_transceiver *xceiv = NULL; + struct usb_phy *xceiv = NULL; const char *type = NULL; - struct omap_usb_config *config = pdev->dev.platform_data; - struct clk *dc_clk; - struct clk *hhc_clk; + struct omap_usb_config *config = dev_get_platdata(&pdev->dev); + struct clk *dc_clk = NULL; + struct clk *hhc_clk = NULL; + + if (cpu_is_omap7xx()) + use_dma = 0; /* NOTE: "knows" the order of the resources! */ if (!request_mem_region(pdev->resource[0].start, @@ -2814,16 +2759,6 @@ static int __init omap_udc_probe(struct platform_device *pdev) udelay(100); } - if (cpu_is_omap24xx()) { - dc_clk = clk_get(&pdev->dev, "usb_fck"); - hhc_clk = clk_get(&pdev->dev, "usb_l4_ick"); - BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk)); - /* can't use omap_udc_enable_clock yet */ - clk_enable(dc_clk); - clk_enable(hhc_clk); - udelay(100); - } - if (cpu_is_omap7xx()) { dc_clk = clk_get(&pdev->dev, "usb_dc_ck"); hhc_clk = clk_get(&pdev->dev, "l3_ocpi_ck"); @@ -2863,8 +2798,8 @@ static int __init omap_udc_probe(struct platform_device *pdev) * use it. Except for OTG, we don't _need_ to talk to one; * but not having one probably means no VBUS detection. */ - xceiv = otg_get_transceiver(); - if (xceiv) + xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (!IS_ERR_OR_NULL(xceiv)) type = xceiv->label; else if (config->otg) { DBG("OTG requires external transceiver!\n"); @@ -2873,14 +2808,6 @@ static int __init omap_udc_probe(struct platform_device *pdev) hmc = HMC_1610; - if (cpu_is_omap24xx()) { - /* this could be transceiverless in one of the - * "we don't need to know" modes. - */ - type = "external"; - goto known; - } - switch (hmc) { case 0: /* POWERUP DEFAULT == 0 */ case 4: @@ -2896,7 +2823,7 @@ static int __init omap_udc_probe(struct platform_device *pdev) case 16: case 19: case 25: - if (!xceiv) { + if (IS_ERR_OR_NULL(xceiv)) { DBG("external transceiver not registered!\n"); type = "unknown"; } @@ -2919,16 +2846,16 @@ bad_on_1710: goto cleanup0; } } -known: + INFO("hmc mode %d, %s transceiver\n", hmc, type); /* a "gadget" abstracts/virtualizes the controller */ status = omap_udc_setup(pdev, xceiv); - if (status) { + if (status) goto cleanup0; - } + xceiv = NULL; - // "udc" is now valid + /* "udc" is now valid */ pullup_disable(udc); #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) udc->gadget.is_otg = (config->otg != 0); @@ -2942,7 +2869,7 @@ known: /* USB general purpose IRQ: ep0, state changes, dma, etc */ status = request_irq(pdev->resource[1].start, omap_udc_irq, - IRQF_SAMPLE_RANDOM, driver_name, udc); + 0, driver_name, udc); if (status != 0) { ERR("can't get irq %d, err %d\n", (int) pdev->resource[1].start, status); @@ -2951,7 +2878,7 @@ known: /* USB "non-iso" IRQ (PIO for all but ep0) */ status = request_irq(pdev->resource[2].start, omap_udc_pio_irq, - IRQF_SAMPLE_RANDOM, "omap_udc pio", udc); + 0, "omap_udc pio", udc); if (status != 0) { ERR("can't get irq %d, err %d\n", (int) pdev->resource[2].start, status); @@ -2973,25 +2900,14 @@ known: clk_disable(dc_clk); } - if (cpu_is_omap24xx()) { - udc->dc_clk = dc_clk; - udc->hhc_clk = hhc_clk; - /* FIXME OMAP2 don't release hhc & dc clock */ -#if 0 - clk_disable(hhc_clk); - clk_disable(dc_clk); -#endif - } - create_proc_file(); - status = device_add(&udc->gadget.dev); + status = usb_add_gadget_udc_release(&pdev->dev, &udc->gadget, + omap_udc_release); if (status) goto cleanup4; - status = usb_add_gadget_udc(&pdev->dev, &udc->gadget); - if (!status) - return status; - /* If fail, fall through */ + return 0; + cleanup4: remove_proc_file(); @@ -3004,14 +2920,14 @@ cleanup2: free_irq(pdev->resource[1].start, udc); cleanup1: - kfree (udc); + kfree(udc); udc = NULL; cleanup0: - if (xceiv) - otg_put_transceiver(xceiv); + if (!IS_ERR_OR_NULL(xceiv)) + usb_put_phy(xceiv); - if (cpu_is_omap16xx() || cpu_is_omap24xx() || cpu_is_omap7xx()) { + if (cpu_is_omap16xx() || cpu_is_omap7xx()) { clk_disable(hhc_clk); clk_disable(dc_clk); clk_put(hhc_clk); @@ -3024,7 +2940,7 @@ cleanup0: return status; } -static int __exit omap_udc_remove(struct platform_device *pdev) +static int omap_udc_remove(struct platform_device *pdev) { DECLARE_COMPLETION_ONSTACK(done); @@ -3038,8 +2954,8 @@ static int __exit omap_udc_remove(struct platform_device *pdev) udc->done = &done; pullup_disable(udc); - if (udc->transceiver) { - otg_put_transceiver(udc->transceiver); + if (!IS_ERR_OR_NULL(udc->transceiver)) { + usb_put_phy(udc->transceiver); udc->transceiver = NULL; } omap_writew(0, UDC_SYSCON1); @@ -3062,7 +2978,6 @@ static int __exit omap_udc_remove(struct platform_device *pdev) release_mem_region(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start + 1); - device_unregister(&udc->gadget.dev); wait_for_completion(&done); return 0; @@ -3109,7 +3024,8 @@ static int omap_udc_resume(struct platform_device *dev) /*-------------------------------------------------------------------------*/ static struct platform_driver udc_driver = { - .remove = __exit_p(omap_udc_remove), + .probe = omap_udc_probe, + .remove = omap_udc_remove, .suspend = omap_udc_suspend, .resume = omap_udc_resume, .driver = { @@ -3118,27 +3034,7 @@ static struct platform_driver udc_driver = { }, }; -static int __init udc_init(void) -{ - /* Disable DMA for omap7xx -- it doesn't work right. */ - if (cpu_is_omap7xx()) - use_dma = 0; - - INFO("%s, version: " DRIVER_VERSION -#ifdef USE_ISO - " (iso)" -#endif - "%s\n", driver_desc, - use_dma ? " (dma)" : ""); - return platform_driver_probe(&udc_driver, omap_udc_probe); -} -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); +module_platform_driver(udc_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/omap_udc.h b/drivers/usb/gadget/omap_udc.h index 29edc51b6b2..cfadeb5fc5d 100644 --- a/drivers/usb/gadget/omap_udc.h +++ b/drivers/usb/gadget/omap_udc.h @@ -140,7 +140,6 @@ struct omap_ep { struct list_head queue; unsigned long irqs; struct list_head iso; - const struct usb_endpoint_descriptor *desc; char name[14]; u16 maxpacket; u8 bEndpointAddress; @@ -164,7 +163,7 @@ struct omap_udc { struct omap_ep ep[32]; u16 devstat; u16 clr_halt; - struct otg_transceiver *transceiver; + struct usb_phy *transceiver; struct list_head iso; unsigned softconnect:1; unsigned vbus_active:1; diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index a3fcaae4bc2..eb8c3bedb57 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -15,6 +15,14 @@ #include <linux/interrupt.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/gpio.h> +#include <linux/irq.h> + +/* GPIO port for VBUS detecting */ +static int vbus_gpio_port = -1; /* GPIO port number (-1:Not used) */ + +#define PCH_VBUS_PERIOD 3000 /* VBUS polling period (msec) */ +#define PCH_VBUS_INTERVAL 10 /* VBUS polling interval (msec) */ /* Address offset of Registers */ #define UDC_EP_REG_SHIFT 0x20 /* Offset to next EP */ @@ -287,7 +295,6 @@ struct pch_udc_ep { struct pch_udc_data_dma_desc *td_data; struct pch_udc_dev *dev; unsigned long offset_addr; - const struct usb_endpoint_descriptor *desc; struct list_head queue; unsigned num:5, in:1, @@ -296,6 +303,21 @@ struct pch_udc_ep { }; /** + * struct pch_vbus_gpio_data - Structure holding GPIO informaton + * for detecting VBUS + * @port: gpio port number + * @intr: gpio interrupt number + * @irq_work_fall Structure for WorkQueue + * @irq_work_rise Structure for WorkQueue + */ +struct pch_vbus_gpio_data { + int port; + int intr; + struct work_struct irq_work_fall; + struct work_struct irq_work_rise; +}; + +/** * struct pch_udc_dev - Structure holding complete information * of the PCH USB device * @gadget: gadget driver data @@ -311,6 +333,7 @@ struct pch_udc_ep { * @registered: driver regsitered with system * @suspended: driver in suspended state * @connected: gadget driver associated + * @vbus_session: required vbus_session state * @set_cfg_not_acked: pending acknowledgement 4 setup * @waiting_zlp_ack: pending acknowledgement 4 ZLP * @data_requests: DMA pool for data requests @@ -322,6 +345,7 @@ struct pch_udc_ep { * @base_addr: for mapped device memory * @irq: IRQ line for the device * @cfg_data: current cfg, intf, and alt in use + * @vbus_gpio: GPIO informaton for detecting VBUS */ struct pch_udc_dev { struct usb_gadget gadget; @@ -334,9 +358,9 @@ struct pch_udc_dev { prot_stall:1, irq_registered:1, mem_region:1, - registered:1, suspended:1, connected:1, + vbus_session:1, set_cfg_not_acked:1, waiting_zlp_ack:1; struct pci_pool *data_requests; @@ -347,8 +371,10 @@ struct pch_udc_dev { unsigned long phys_addr; void __iomem *base_addr; unsigned irq; - struct pch_udc_cfg_data cfg_data; + struct pch_udc_cfg_data cfg_data; + struct pch_vbus_gpio_data vbus_gpio; }; +#define to_pch_udc(g) (container_of((g), struct pch_udc_dev, gadget)) #define PCH_UDC_PCI_BAR 1 #define PCI_DEVICE_ID_INTEL_EG20T_UDC 0x8808 @@ -358,7 +384,6 @@ struct pch_udc_dev { static const char ep0_string[] = "ep0in"; static DEFINE_SPINLOCK(udc_stall_spinlock); /* stall spin lock */ -struct pch_udc_dev *pch_udc; /* pointer to device object */ static bool speed_fs; module_param_named(speed_fs, speed_fs, bool, S_IRUGO); MODULE_PARM_DESC(speed_fs, "true for Full speed operation"); @@ -554,6 +579,29 @@ static void pch_udc_clear_disconnect(struct pch_udc_dev *dev) } /** + * pch_udc_reconnect() - This API initializes usb device controller, + * and clear the disconnect status. + * @dev: Reference to pch_udc_regs structure + */ +static void pch_udc_init(struct pch_udc_dev *dev); +static void pch_udc_reconnect(struct pch_udc_dev *dev) +{ + pch_udc_init(dev); + + /* enable device interrupts */ + /* pch_udc_enable_interrupts() */ + pch_udc_bit_clr(dev, UDC_DEVIRQMSK_ADDR, + UDC_DEVINT_UR | UDC_DEVINT_ENUM); + + /* Clear the disconnect */ + pch_udc_bit_set(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_RES); + pch_udc_bit_clr(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_SD); + mdelay(1); + /* Resume USB signalling */ + pch_udc_bit_clr(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_RES); +} + +/** * pch_udc_vbus_session() - set or clearr the disconnect status. * @dev: Reference to pch_udc_regs structure * @is_active: Parameter specifying the action @@ -563,10 +611,18 @@ static void pch_udc_clear_disconnect(struct pch_udc_dev *dev) static inline void pch_udc_vbus_session(struct pch_udc_dev *dev, int is_active) { - if (is_active) - pch_udc_clear_disconnect(dev); - else + if (is_active) { + pch_udc_reconnect(dev); + dev->vbus_session = 1; + } else { + if (dev->driver && dev->driver->disconnect) { + spin_unlock(&dev->lock); + dev->driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } pch_udc_set_disconnect(dev); + dev->vbus_session = 0; + } } /** @@ -1126,7 +1182,17 @@ static int pch_udc_pcd_pullup(struct usb_gadget *gadget, int is_on) if (!gadget) return -EINVAL; dev = container_of(gadget, struct pch_udc_dev, gadget); - pch_udc_vbus_session(dev, is_on); + if (is_on) { + pch_udc_reconnect(dev); + } else { + if (dev->driver && dev->driver->disconnect) { + spin_unlock(&dev->lock); + dev->driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + pch_udc_set_disconnect(dev); + } + return 0; } @@ -1168,9 +1234,10 @@ static int pch_udc_pcd_vbus_draw(struct usb_gadget *gadget, unsigned int mA) return -EOPNOTSUPP; } -static int pch_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int pch_udc_stop(struct usb_gadget_driver *driver); +static int pch_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int pch_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops pch_udc_ops = { .get_frame = pch_udc_pcd_get_frame, .wakeup = pch_udc_pcd_wakeup, @@ -1178,11 +1245,193 @@ static const struct usb_gadget_ops pch_udc_ops = { .pullup = pch_udc_pcd_pullup, .vbus_session = pch_udc_pcd_vbus_session, .vbus_draw = pch_udc_pcd_vbus_draw, - .start = pch_udc_start, - .stop = pch_udc_stop, + .udc_start = pch_udc_start, + .udc_stop = pch_udc_stop, }; /** + * pch_vbus_gpio_get_value() - This API gets value of GPIO port as VBUS status. + * @dev: Reference to the driver structure + * + * Return value: + * 1: VBUS is high + * 0: VBUS is low + * -1: It is not enable to detect VBUS using GPIO + */ +static int pch_vbus_gpio_get_value(struct pch_udc_dev *dev) +{ + int vbus = 0; + + if (dev->vbus_gpio.port) + vbus = gpio_get_value(dev->vbus_gpio.port) ? 1 : 0; + else + vbus = -1; + + return vbus; +} + +/** + * pch_vbus_gpio_work_fall() - This API keeps watch on VBUS becoming Low. + * If VBUS is Low, disconnect is processed + * @irq_work: Structure for WorkQueue + * + */ +static void pch_vbus_gpio_work_fall(struct work_struct *irq_work) +{ + struct pch_vbus_gpio_data *vbus_gpio = container_of(irq_work, + struct pch_vbus_gpio_data, irq_work_fall); + struct pch_udc_dev *dev = + container_of(vbus_gpio, struct pch_udc_dev, vbus_gpio); + int vbus_saved = -1; + int vbus; + int count; + + if (!dev->vbus_gpio.port) + return; + + for (count = 0; count < (PCH_VBUS_PERIOD / PCH_VBUS_INTERVAL); + count++) { + vbus = pch_vbus_gpio_get_value(dev); + + if ((vbus_saved == vbus) && (vbus == 0)) { + dev_dbg(&dev->pdev->dev, "VBUS fell"); + if (dev->driver + && dev->driver->disconnect) { + dev->driver->disconnect( + &dev->gadget); + } + if (dev->vbus_gpio.intr) + pch_udc_init(dev); + else + pch_udc_reconnect(dev); + return; + } + vbus_saved = vbus; + mdelay(PCH_VBUS_INTERVAL); + } +} + +/** + * pch_vbus_gpio_work_rise() - This API checks VBUS is High. + * If VBUS is High, connect is processed + * @irq_work: Structure for WorkQueue + * + */ +static void pch_vbus_gpio_work_rise(struct work_struct *irq_work) +{ + struct pch_vbus_gpio_data *vbus_gpio = container_of(irq_work, + struct pch_vbus_gpio_data, irq_work_rise); + struct pch_udc_dev *dev = + container_of(vbus_gpio, struct pch_udc_dev, vbus_gpio); + int vbus; + + if (!dev->vbus_gpio.port) + return; + + mdelay(PCH_VBUS_INTERVAL); + vbus = pch_vbus_gpio_get_value(dev); + + if (vbus == 1) { + dev_dbg(&dev->pdev->dev, "VBUS rose"); + pch_udc_reconnect(dev); + return; + } +} + +/** + * pch_vbus_gpio_irq() - IRQ handler for GPIO intrerrupt for changing VBUS + * @irq: Interrupt request number + * @dev: Reference to the device structure + * + * Return codes: + * 0: Success + * -EINVAL: GPIO port is invalid or can't be initialized. + */ +static irqreturn_t pch_vbus_gpio_irq(int irq, void *data) +{ + struct pch_udc_dev *dev = (struct pch_udc_dev *)data; + + if (!dev->vbus_gpio.port || !dev->vbus_gpio.intr) + return IRQ_NONE; + + if (pch_vbus_gpio_get_value(dev)) + schedule_work(&dev->vbus_gpio.irq_work_rise); + else + schedule_work(&dev->vbus_gpio.irq_work_fall); + + return IRQ_HANDLED; +} + +/** + * pch_vbus_gpio_init() - This API initializes GPIO port detecting VBUS. + * @dev: Reference to the driver structure + * @vbus_gpio Number of GPIO port to detect gpio + * + * Return codes: + * 0: Success + * -EINVAL: GPIO port is invalid or can't be initialized. + */ +static int pch_vbus_gpio_init(struct pch_udc_dev *dev, int vbus_gpio_port) +{ + int err; + int irq_num = 0; + + dev->vbus_gpio.port = 0; + dev->vbus_gpio.intr = 0; + + if (vbus_gpio_port <= -1) + return -EINVAL; + + err = gpio_is_valid(vbus_gpio_port); + if (!err) { + pr_err("%s: gpio port %d is invalid\n", + __func__, vbus_gpio_port); + return -EINVAL; + } + + err = gpio_request(vbus_gpio_port, "pch_vbus"); + if (err) { + pr_err("%s: can't request gpio port %d, err: %d\n", + __func__, vbus_gpio_port, err); + return -EINVAL; + } + + dev->vbus_gpio.port = vbus_gpio_port; + gpio_direction_input(vbus_gpio_port); + INIT_WORK(&dev->vbus_gpio.irq_work_fall, pch_vbus_gpio_work_fall); + + irq_num = gpio_to_irq(vbus_gpio_port); + if (irq_num > 0) { + irq_set_irq_type(irq_num, IRQ_TYPE_EDGE_BOTH); + err = request_irq(irq_num, pch_vbus_gpio_irq, 0, + "vbus_detect", dev); + if (!err) { + dev->vbus_gpio.intr = irq_num; + INIT_WORK(&dev->vbus_gpio.irq_work_rise, + pch_vbus_gpio_work_rise); + } else { + pr_err("%s: can't request irq %d, err: %d\n", + __func__, irq_num, err); + } + } + + return 0; +} + +/** + * pch_vbus_gpio_free() - This API frees resources of GPIO port + * @dev: Reference to the driver structure + */ +static void pch_vbus_gpio_free(struct pch_udc_dev *dev) +{ + if (dev->vbus_gpio.intr) + free_irq(dev->vbus_gpio.intr, dev); + + if (dev->vbus_gpio.port) + gpio_free(dev->vbus_gpio.port); +} + +/** * complete_req() - This API is invoked from the driver when processing * of a request is complete * @ep: Reference to the endpoint structure @@ -1191,6 +1440,8 @@ static const struct usb_gadget_ops pch_udc_ops = { */ static void complete_req(struct pch_udc_ep *ep, struct pch_udc_request *req, int status) + __releases(&dev->lock) + __acquires(&dev->lock) { struct pch_udc_dev *dev; unsigned halted = ep->halted; @@ -1455,7 +1706,7 @@ static int pch_udc_pcd_ep_enable(struct usb_ep *usbep, if (!dev->driver || (dev->gadget.speed == USB_SPEED_UNKNOWN)) return -ESHUTDOWN; spin_lock_irqsave(&dev->lock, iflags); - ep->desc = desc; + ep->ep.desc = desc; ep->halted = 0; pch_udc_ep_enable(ep, &ep->dev->cfg_data, desc); ep->ep.maxpacket = usb_endpoint_maxp(desc); @@ -1484,7 +1735,7 @@ static int pch_udc_pcd_ep_disable(struct usb_ep *usbep) ep = container_of(usbep, struct pch_udc_ep, ep); dev = ep->dev; - if ((usbep->name == ep0_string) || !ep->desc) + if ((usbep->name == ep0_string) || !ep->ep.desc) return -EINVAL; spin_lock_irqsave(&ep->dev->lock, iflags); @@ -1492,7 +1743,7 @@ static int pch_udc_pcd_ep_disable(struct usb_ep *usbep) ep->halted = 1; pch_udc_ep_disable(ep); pch_udc_disable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num)); - ep->desc = NULL; + ep->ep.desc = NULL; INIT_LIST_HEAD(&ep->queue); spin_unlock_irqrestore(&ep->dev->lock, iflags); return 0; @@ -1598,7 +1849,7 @@ static int pch_udc_pcd_queue(struct usb_ep *usbep, struct usb_request *usbreq, return -EINVAL; ep = container_of(usbep, struct pch_udc_ep, ep); dev = ep->dev; - if (!ep->desc && ep->num) + if (!ep->ep.desc && ep->num) return -EINVAL; req = container_of(usbreq, struct pch_udc_request, req); if (!list_empty(&req->queue)) @@ -1698,7 +1949,7 @@ static int pch_udc_pcd_dequeue(struct usb_ep *usbep, ep = container_of(usbep, struct pch_udc_ep, ep); dev = ep->dev; - if (!usbep || !usbreq || (!ep->desc && ep->num)) + if (!usbep || !usbreq || (!ep->ep.desc && ep->num)) return ret; req = container_of(usbreq, struct pch_udc_request, req); spin_lock_irqsave(&ep->dev->lock, flags); @@ -1737,7 +1988,7 @@ static int pch_udc_pcd_set_halt(struct usb_ep *usbep, int halt) return -EINVAL; ep = container_of(usbep, struct pch_udc_ep, ep); dev = ep->dev; - if (!ep->desc && !ep->num) + if (!ep->ep.desc && !ep->num) return -EINVAL; if (!ep->dev->driver || (ep->dev->gadget.speed == USB_SPEED_UNKNOWN)) return -ESHUTDOWN; @@ -1782,7 +2033,7 @@ static int pch_udc_pcd_set_wedge(struct usb_ep *usbep) return -EINVAL; ep = container_of(usbep, struct pch_udc_ep, ep); dev = ep->dev; - if (!ep->desc && !ep->num) + if (!ep->ep.desc && !ep->num) return -EINVAL; if (!ep->dev->driver || (ep->dev->gadget.speed == USB_SPEED_UNKNOWN)) return -ESHUTDOWN; @@ -1814,7 +2065,7 @@ static void pch_udc_pcd_fifo_flush(struct usb_ep *usbep) return; ep = container_of(usbep, struct pch_udc_ep, ep); - if (ep->desc || !ep->num) + if (ep->ep.desc || !ep->num) pch_udc_ep_fifo_flush(ep, ep->in); } @@ -1959,7 +2210,7 @@ static void pch_udc_complete_receiver(struct pch_udc_ep *ep) return; } if ((td->status & PCH_UDC_BUFF_STS) == PCH_UDC_BS_DMA_DONE) - if (td->status | PCH_UDC_DMA_LAST) { + if (td->status & PCH_UDC_DMA_LAST) { count = td->status & PCH_UDC_RXTX_BYTES; break; } @@ -2132,6 +2383,8 @@ static void pch_udc_svc_control_in(struct pch_udc_dev *dev) * @dev: Reference to the device structure */ static void pch_udc_svc_control_out(struct pch_udc_dev *dev) + __releases(&dev->lock) + __acquires(&dev->lock) { u32 stat; int setup_supported; @@ -2335,8 +2588,11 @@ static void pch_udc_svc_ur_interrupt(struct pch_udc_dev *dev) /* Complete request queue */ empty_req_queue(ep); } - if (dev->driver && dev->driver->disconnect) + if (dev->driver && dev->driver->disconnect) { + spin_unlock(&dev->lock); dev->driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } } /** @@ -2371,6 +2627,11 @@ static void pch_udc_svc_enum_interrupt(struct pch_udc_dev *dev) pch_udc_set_dma(dev, DMA_DIR_TX); pch_udc_set_dma(dev, DMA_DIR_RX); pch_udc_ep_set_rrdy(&(dev->ep[UDC_EP0OUT_IDX])); + + /* enable device interrupts */ + pch_udc_enable_interrupts(dev, UDC_DEVINT_UR | UDC_DEVINT_US | + UDC_DEVINT_ES | UDC_DEVINT_ENUM | + UDC_DEVINT_SI | UDC_DEVINT_SC); } /** @@ -2459,12 +2720,18 @@ static void pch_udc_svc_cfg_interrupt(struct pch_udc_dev *dev) */ static void pch_udc_dev_isr(struct pch_udc_dev *dev, u32 dev_intr) { + int vbus; + /* USB Reset Interrupt */ - if (dev_intr & UDC_DEVINT_UR) + if (dev_intr & UDC_DEVINT_UR) { pch_udc_svc_ur_interrupt(dev); + dev_dbg(&dev->pdev->dev, "USB_RESET\n"); + } /* Enumeration Done Interrupt */ - if (dev_intr & UDC_DEVINT_ENUM) + if (dev_intr & UDC_DEVINT_ENUM) { pch_udc_svc_enum_interrupt(dev); + dev_dbg(&dev->pdev->dev, "USB_ENUM\n"); + } /* Set Interface Interrupt */ if (dev_intr & UDC_DEVINT_SI) pch_udc_svc_intf_interrupt(dev); @@ -2472,8 +2739,30 @@ static void pch_udc_dev_isr(struct pch_udc_dev *dev, u32 dev_intr) if (dev_intr & UDC_DEVINT_SC) pch_udc_svc_cfg_interrupt(dev); /* USB Suspend interrupt */ - if (dev_intr & UDC_DEVINT_US) + if (dev_intr & UDC_DEVINT_US) { + if (dev->driver + && dev->driver->suspend) { + spin_unlock(&dev->lock); + dev->driver->suspend(&dev->gadget); + spin_lock(&dev->lock); + } + + vbus = pch_vbus_gpio_get_value(dev); + if ((dev->vbus_session == 0) + && (vbus != 1)) { + if (dev->driver && dev->driver->disconnect) { + spin_unlock(&dev->lock); + dev->driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + pch_udc_reconnect(dev); + } else if ((dev->vbus_session == 0) + && (vbus == 1) + && !dev->vbus_gpio.intr) + schedule_work(&dev->vbus_gpio.irq_work_fall); + dev_dbg(&dev->pdev->dev, "USB_SUSPEND\n"); + } /* Clear the SOF interrupt, if enabled */ if (dev_intr & UDC_DEVINT_SOF) dev_dbg(&dev->pdev->dev, "SOF\n"); @@ -2499,6 +2788,14 @@ static irqreturn_t pch_udc_isr(int irq, void *pdev) dev_intr = pch_udc_read_device_interrupts(dev); ep_intr = pch_udc_read_ep_interrupts(dev); + /* For a hot plug, this find that the controller is hung up. */ + if (dev_intr == ep_intr) + if (dev_intr == pch_udc_readl(dev, UDC_DEVCFG_ADDR)) { + dev_dbg(&dev->pdev->dev, "UDC: Hung up\n"); + /* The controller is reset */ + pch_udc_writel(dev, UDC_SRST, UDC_SRST_ADDR); + return IRQ_HANDLED; + } if (dev_intr) /* Clear device interrupts */ pch_udc_write_device_interrupts(dev, dev_intr); @@ -2599,12 +2896,12 @@ static void pch_udc_pcd_reinit(struct pch_udc_dev *dev) ep->offset_addr = (UDC_EPINT_OUT_SHIFT + ep->num) * UDC_EP_REG_SHIFT; /* need to set ep->ep.maxpacket and set Default Configuration?*/ - ep->ep.maxpacket = UDC_BULK_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, UDC_BULK_MAX_PKT_SIZE); list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); INIT_LIST_HEAD(&ep->queue); } - dev->ep[UDC_EP0IN_IDX].ep.maxpacket = UDC_EP0IN_MAX_PKT_SIZE; - dev->ep[UDC_EP0OUT_IDX].ep.maxpacket = UDC_EP0OUT_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0IN_IDX].ep, UDC_EP0IN_MAX_PKT_SIZE); + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0OUT_IDX].ep, UDC_EP0OUT_MAX_PKT_SIZE); /* remove ep0 in and out from the list. They have own pointer */ list_del_init(&dev->ep[UDC_EP0IN_IDX].ep.ep_list); @@ -2625,6 +2922,7 @@ static int pch_udc_pcd_init(struct pch_udc_dev *dev) { pch_udc_init(dev); pch_udc_pcd_reinit(dev); + pch_vbus_gpio_init(dev, vbus_gpio_port); return 0; } @@ -2687,74 +2985,39 @@ static int init_dma_pools(struct pch_udc_dev *dev) return 0; } -static int pch_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int pch_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pch_udc_dev *dev = pch_udc; - int retval; + struct pch_udc_dev *dev = to_pch_udc(g); - if (!driver || (driver->max_speed == USB_SPEED_UNKNOWN) || !bind || - !driver->setup || !driver->unbind || !driver->disconnect) { - dev_err(&dev->pdev->dev, - "%s: invalid driver parameter\n", __func__); - return -EINVAL; - } - - if (!dev) - return -ENODEV; - - if (dev->driver) { - dev_err(&dev->pdev->dev, "%s: already bound\n", __func__); - return -EBUSY; - } driver->driver.bus = NULL; dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; - /* Invoke the bind routine of the gadget driver */ - retval = bind(&dev->gadget); - - if (retval) { - dev_err(&dev->pdev->dev, "%s: binding to %s returning %d\n", - __func__, driver->driver.name, retval); - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } /* get ready for ep0 traffic */ pch_udc_setup_ep0(dev); /* clear SD */ - pch_udc_clear_disconnect(dev); + if ((pch_vbus_gpio_get_value(dev) != 0) || !dev->vbus_gpio.intr) + pch_udc_clear_disconnect(dev); dev->connected = 1; return 0; } -static int pch_udc_stop(struct usb_gadget_driver *driver) +static int pch_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pch_udc_dev *dev = pch_udc; - - if (!dev) - return -ENODEV; - - if (!driver || (driver != dev->driver)) { - dev_err(&dev->pdev->dev, - "%s: invalid driver parameter\n", __func__); - return -EINVAL; - } + struct pch_udc_dev *dev = to_pch_udc(g); pch_udc_disable_interrupts(dev, UDC_DEVINT_MSK); /* Assures that there are no pending requests with this driver */ - driver->disconnect(&dev->gadget); - driver->unbind(&dev->gadget); - dev->gadget.dev.driver = NULL; dev->driver = NULL; dev->connected = 0; /* set SD */ pch_udc_set_disconnect(dev); + return 0; } @@ -2803,6 +3066,8 @@ static void pch_udc_remove(struct pci_dev *pdev) UDC_EP0OUT_BUFF_SIZE * 4, DMA_FROM_DEVICE); kfree(dev->ep0out_buf); + pch_vbus_gpio_free(dev); + pch_udc_exit(dev); if (dev->irq_registered) @@ -2814,10 +3079,7 @@ static void pch_udc_remove(struct pci_dev *pdev) pci_resource_len(pdev, PCH_UDC_PCI_BAR)); if (dev->active) pci_disable_device(pdev); - if (dev->registered) - device_unregister(&dev->gadget.dev); kfree(dev); - pci_set_drvdata(pdev, NULL); } #ifdef CONFIG_PM @@ -2867,11 +3129,6 @@ static int pch_udc_probe(struct pci_dev *pdev, int retval; struct pch_udc_dev *dev; - /* one udc only */ - if (pch_udc) { - pr_err("%s: already probed\n", __func__); - return -EBUSY; - } /* init */ dev = kzalloc(sizeof *dev, GFP_KERNEL); if (!dev) { @@ -2910,10 +3167,11 @@ static int pch_udc_probe(struct pci_dev *pdev, retval = -ENODEV; goto finished; } - pch_udc = dev; /* initialize the hardware */ - if (pch_udc_pcd_init(dev)) + if (pch_udc_pcd_init(dev)) { + retval = -ENODEV; goto finished; + } if (request_irq(pdev->irq, pch_udc_isr, IRQF_SHARED, KBUILD_MODNAME, dev)) { dev_err(&pdev->dev, "%s: request_irq(%d) fail\n", __func__, @@ -2936,21 +3194,13 @@ static int pch_udc_probe(struct pci_dev *pdev, if (retval) goto finished; - dev_set_name(&dev->gadget.dev, "gadget"); - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; - dev->gadget.dev.release = gadget_release; dev->gadget.name = KBUILD_MODNAME; dev->gadget.max_speed = USB_SPEED_HIGH; - retval = device_register(&dev->gadget.dev); - if (retval) - goto finished; - dev->registered = 1; - /* Put the device in disconnected state till a driver is bound */ pch_udc_set_disconnect(dev); - retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget); + retval = usb_add_gadget_udc_release(&pdev->dev, &dev->gadget, + gadget_release); if (retval) goto finished; return 0; @@ -2960,7 +3210,7 @@ finished: return retval; } -static DEFINE_PCI_DEVICE_TABLE(pch_udc_pcidev_id) = { +static const struct pci_device_id pch_udc_pcidev_id[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EG20T_UDC), .class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe, @@ -2981,7 +3231,6 @@ static DEFINE_PCI_DEVICE_TABLE(pch_udc_pcidev_id) = { MODULE_DEVICE_TABLE(pci, pch_udc_pcidev_id); - static struct pci_driver pch_udc_driver = { .name = KBUILD_MODNAME, .id_table = pch_udc_pcidev_id, @@ -2992,17 +3241,7 @@ static struct pci_driver pch_udc_driver = { .shutdown = pch_udc_shutdown, }; -static int __init pch_udc_pci_init(void) -{ - return pci_register_driver(&pch_udc_driver); -} -module_init(pch_udc_pci_init); - -static void __exit pch_udc_pci_exit(void) -{ - pci_unregister_driver(&pch_udc_driver); -} -module_exit(pch_udc_pci_exit); +module_pci_driver(pch_udc_driver); MODULE_DESCRIPTION("Intel EG20T USB Device Controller"); MODULE_AUTHOR("LAPIS Semiconductor, <tomoya-linux@dsn.lapis-semi.com>"); diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c index d83134b0f78..6474081dcba 100644 --- a/drivers/usb/gadget/printer.c +++ b/drivers/usb/gadget/printer.c @@ -22,7 +22,6 @@ #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> -#include <linux/utsname.h> #include <linux/device.h> #include <linux/moduleparam.h> #include <linux/fs.h> @@ -34,29 +33,17 @@ #include <asm/byteorder.h> #include <linux/io.h> #include <linux/irq.h> -#include <asm/system.h> #include <linux/uaccess.h> #include <asm/unaligned.h> #include <linux/usb/ch9.h> +#include <linux/usb/composite.h> #include <linux/usb/gadget.h> #include <linux/usb/g_printer.h> #include "gadget_chips.h" - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -/*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); #define DRIVER_DESC "Printer Gadget" #define DRIVER_VERSION "2007 OCT 06" @@ -76,8 +63,6 @@ struct printer_dev { /* lock buffer lists during read/write calls */ struct mutex lock_printer_io; struct usb_gadget *gadget; - struct usb_request *req; /* for control responses */ - u8 config; s8 interface; struct usb_ep *in_ep, *out_ep; @@ -101,6 +86,7 @@ struct printer_dev { struct device *pdev; u8 printer_cdev_open; wait_queue_head_t wait; + struct usb_function function; }; static struct printer_dev usb_printer_gadget; @@ -121,28 +107,7 @@ static struct printer_dev usb_printer_gadget; * parameters are in UTF-8 (superset of ASCII's 7 bit characters). */ -static ushort idVendor; -module_param(idVendor, ushort, S_IRUGO); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort idProduct; -module_param(idProduct, ushort, S_IRUGO); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort bcdDevice; -module_param(bcdDevice, ushort, S_IRUGO); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - -static char *iManufacturer; -module_param(iManufacturer, charp, S_IRUGO); -MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); - -static char *iProduct; -module_param(iProduct, charp, S_IRUGO); -MODULE_PARM_DESC(iProduct, "USB Product string"); - -static char *iSerialNum; -module_param(iSerialNum, charp, S_IRUGO); +module_param_named(iSerialNum, coverwrite.serial_number, charp, S_IRUGO); MODULE_PARM_DESC(iSerialNum, "1"); static char *iPNPstring; @@ -155,64 +120,17 @@ module_param(qlen, uint, S_IRUGO|S_IWUSR); #define QLEN qlen -#ifdef CONFIG_USB_GADGET_DUALSPEED -#define DEVSPEED USB_SPEED_HIGH -#else /* full speed (low speed doesn't do bulk) */ -#define DEVSPEED USB_SPEED_FULL -#endif - -/*-------------------------------------------------------------------------*/ - -#define xprintk(d, level, fmt, args...) \ - printk(level "%s: " fmt, DRIVER_DESC, ## args) - -#ifdef DEBUG -#define DBG(dev, fmt, args...) \ - xprintk(dev, KERN_DEBUG, fmt, ## args) -#else -#define DBG(dev, fmt, args...) \ - do { } while (0) -#endif /* DEBUG */ - -#ifdef VERBOSE -#define VDBG(dev, fmt, args...) \ - xprintk(dev, KERN_DEBUG, fmt, ## args) -#else -#define VDBG(dev, fmt, args...) \ - do { } while (0) -#endif /* VERBOSE */ - -#define ERROR(dev, fmt, args...) \ - xprintk(dev, KERN_ERR, fmt, ## args) -#define WARNING(dev, fmt, args...) \ - xprintk(dev, KERN_WARNING, fmt, ## args) -#define INFO(dev, fmt, args...) \ - xprintk(dev, KERN_INFO, fmt, ## args) - /*-------------------------------------------------------------------------*/ -/* USB DRIVER HOOKUP (to the hardware driver, below us), mostly - * ep0 implementation: descriptors, config management, setup(). - * also optional class-specific notification interrupt transfer. - */ - /* * DESCRIPTORS ... most are static, but strings and (full) configuration * descriptors are built on demand. */ -#define STRING_MANUFACTURER 1 -#define STRING_PRODUCT 2 -#define STRING_SERIALNUM 3 - /* holds our biggest descriptor */ #define USB_DESC_BUFSIZE 256 #define USB_BUFSIZE 8192 -/* This device advertises one configuration. */ -#define DEV_CONFIG_VALUE 1 -#define PRINTER_INTERFACE 0 - static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, @@ -222,34 +140,12 @@ static struct usb_device_descriptor device_desc = { .bDeviceProtocol = 0, .idVendor = cpu_to_le16(PRINTER_VENDOR_NUM), .idProduct = cpu_to_le16(PRINTER_PRODUCT_NUM), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, - .iSerialNumber = STRING_SERIALNUM, .bNumConfigurations = 1 }; -static struct usb_otg_descriptor otg_desc = { - .bLength = sizeof otg_desc, - .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP -}; - -static struct usb_config_descriptor config_desc = { - .bLength = sizeof config_desc, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 1, - .bConfigurationValue = DEV_CONFIG_VALUE, - .iConfiguration = 0, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, -}; - static struct usb_interface_descriptor intf_desc = { .bLength = sizeof intf_desc, .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = PRINTER_INTERFACE, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_PRINTER, .bInterfaceSubClass = 1, /* Printer Sub-Class */ @@ -271,16 +167,13 @@ static struct usb_endpoint_descriptor fs_ep_out_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK }; -static const struct usb_descriptor_header *fs_printer_function [11] = { - (struct usb_descriptor_header *) &otg_desc, +static struct usb_descriptor_header *fs_printer_function[] = { (struct usb_descriptor_header *) &intf_desc, (struct usb_descriptor_header *) &fs_ep_in_desc, (struct usb_descriptor_header *) &fs_ep_out_desc, NULL }; -#ifdef CONFIG_USB_GADGET_DUALSPEED - /* * usb 2.0 devices need to expose both high speed and full speed * descriptors, unless they only run at full speed. @@ -308,29 +201,31 @@ static struct usb_qualifier_descriptor dev_qualifier = { .bNumConfigurations = 1 }; -static const struct usb_descriptor_header *hs_printer_function [11] = { - (struct usb_descriptor_header *) &otg_desc, +static struct usb_descriptor_header *hs_printer_function[] = { (struct usb_descriptor_header *) &intf_desc, (struct usb_descriptor_header *) &hs_ep_in_desc, (struct usb_descriptor_header *) &hs_ep_out_desc, NULL }; -/* maxpacket and other transfer characteristics vary by speed. */ -#define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs)) - -#else +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + .bmAttributes = USB_OTG_SRP, +}; -/* if there's no high speed support, maxpacket doesn't change. */ -#define ep_desc(g, hs, fs) (((void)(g)), (fs)) +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; -#endif /* !CONFIG_USB_GADGET_DUALSPEED */ +/* maxpacket and other transfer characteristics vary by speed. */ +#define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs)) /*-------------------------------------------------------------------------*/ /* descriptors that are built on-demand */ -static char manufacturer [50]; static char product_desc [40] = DRIVER_DESC; static char serial_num [40] = "1"; static char pnp_string [1024] = @@ -338,17 +233,22 @@ static char pnp_string [1024] = /* static strings, in UTF-8 */ static struct usb_string strings [] = { - { STRING_MANUFACTURER, manufacturer, }, - { STRING_PRODUCT, product_desc, }, - { STRING_SERIALNUM, serial_num, }, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = product_desc, + [USB_GADGET_SERIAL_IDX].s = serial_num, { } /* end of list */ }; -static struct usb_gadget_strings stringtab = { +static struct usb_gadget_strings stringtab_dev = { .language = 0x0409, /* en-us */ .strings = strings, }; +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + /*-------------------------------------------------------------------------*/ static struct usb_request * @@ -527,12 +427,17 @@ setup_rx_reqs(struct printer_dev *dev) req->length = USB_BUFSIZE; req->complete = rx_complete; + /* here, we unlock, and only unlock, to avoid deadlock. */ + spin_unlock(&dev->lock); error = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC); + spin_lock(&dev->lock); if (error) { DBG(dev, "rx submit --> %d\n", error); list_add(&req->list, &dev->rx_reqs); break; - } else { + } + /* if the req is empty, then add it into dev->rx_reqs_active. */ + else if (list_empty(&req->list)) { list_add(&req->list, &dev->rx_reqs_active); } } @@ -788,7 +693,7 @@ static int printer_fsync(struct file *fd, loff_t start, loff_t end, int datasync) { struct printer_dev *dev = fd->private_data; - struct inode *inode = fd->f_path.dentry->d_inode; + struct inode *inode = file_inode(fd); unsigned long flags; int tx_list_empty; @@ -938,105 +843,19 @@ static void printer_reset_interface(struct printer_dev *dev) dev->interface = -1; } -/* change our operational config. must agree with the code - * that returns config descriptors, and altsetting code. - */ -static int -printer_set_config(struct printer_dev *dev, unsigned number) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - - switch (number) { - case DEV_CONFIG_VALUE: - result = 0; - break; - default: - result = -EINVAL; - /* FALL THROUGH */ - case 0: - break; - } - - if (result) { - usb_gadget_vbus_draw(dev->gadget, - dev->gadget->is_otg ? 8 : 100); - } else { - unsigned power; - - power = 2 * config_desc.bMaxPower; - usb_gadget_vbus_draw(dev->gadget, power); - - dev->config = number; - INFO(dev, "%s config #%d: %d mA, %s\n", - usb_speed_string(gadget->speed), - number, power, driver_desc); - } - return result; -} - -static int -config_buf(enum usb_device_speed speed, u8 *buf, u8 type, unsigned index, - int is_otg) -{ - int len; - const struct usb_descriptor_header **function; -#ifdef CONFIG_USB_GADGET_DUALSPEED - int hs = (speed == USB_SPEED_HIGH); - - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; - - if (hs) { - function = hs_printer_function; - } else { - function = fs_printer_function; - } -#else - function = fs_printer_function; -#endif - - if (index >= device_desc.bNumConfigurations) - return -EINVAL; - - /* for now, don't advertise srp-only devices */ - if (!is_otg) - function++; - - len = usb_gadget_config_buf(&config_desc, buf, USB_DESC_BUFSIZE, - function); - if (len < 0) - return len; - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} - /* Change our operational Interface. */ -static int -set_interface(struct printer_dev *dev, unsigned number) +static int set_interface(struct printer_dev *dev, unsigned number) { int result = 0; /* Free the current interface */ - switch (dev->interface) { - case PRINTER_INTERFACE: - printer_reset_interface(dev); - break; - } + printer_reset_interface(dev); - switch (number) { - case PRINTER_INTERFACE: - result = set_printer_interface(dev); - if (result) { - printer_reset_interface(dev); - } else { - dev->interface = PRINTER_INTERFACE; - } - break; - default: - result = -EINVAL; - /* FALL THROUGH */ - } + result = set_printer_interface(dev); + if (result) + printer_reset_interface(dev); + else + dev->interface = number; if (!result) INFO(dev, "Using interface %x\n", number); @@ -1044,14 +863,6 @@ set_interface(struct printer_dev *dev, unsigned number) return result; } -static void printer_setup_complete(struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DBG((struct printer_dev *) ep->driver_data, - "setup complete --> %d, %d/%d\n", - req->status, req->actual, req->length); -} - static void printer_soft_reset(struct printer_dev *dev) { struct usb_request *req; @@ -1108,11 +919,12 @@ static void printer_soft_reset(struct printer_dev *dev) * The setup() callback implements all the ep0 functionality that's not * handled lower down. */ -static int -printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) +static int printer_func_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) { - struct printer_dev *dev = get_gadget_data(gadget); - struct usb_request *req = dev->req; + struct printer_dev *dev = container_of(f, struct printer_dev, function); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; int value = -EOPNOTSUPP; u16 wIndex = le16_to_cpu(ctrl->wIndex); u16 wValue = le16_to_cpu(ctrl->wValue); @@ -1121,107 +933,12 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) DBG(dev, "ctrl req%02x.%02x v%04x i%04x l%d\n", ctrl->bRequestType, ctrl->bRequest, wValue, wIndex, wLength); - req->complete = printer_setup_complete; - switch (ctrl->bRequestType&USB_TYPE_MASK) { - - case USB_TYPE_STANDARD: - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - break; - switch (wValue >> 8) { - - case USB_DT_DEVICE: - device_desc.bMaxPacketSize0 = - gadget->ep0->maxpacket; - value = min(wLength, (u16) sizeof device_desc); - memcpy(req->buf, &device_desc, value); - break; -#ifdef CONFIG_USB_GADGET_DUALSPEED - case USB_DT_DEVICE_QUALIFIER: - if (!gadget_is_dualspeed(gadget)) - break; - /* - * assumes ep0 uses the same value for both - * speeds - */ - dev_qualifier.bMaxPacketSize0 = - gadget->ep0->maxpacket; - value = min(wLength, - (u16) sizeof dev_qualifier); - memcpy(req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget_is_dualspeed(gadget)) - break; - /* FALLTHROUGH */ -#endif /* CONFIG_USB_GADGET_DUALSPEED */ - case USB_DT_CONFIG: - value = config_buf(gadget->speed, req->buf, - wValue >> 8, - wValue & 0xff, - gadget->is_otg); - if (value >= 0) - value = min(wLength, (u16) value); - break; - - case USB_DT_STRING: - value = usb_gadget_get_string(&stringtab, - wValue & 0xff, req->buf); - if (value >= 0) - value = min(wLength, (u16) value); - break; - } - break; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - break; - if (gadget->a_hnp_support) - DBG(dev, "HNP available\n"); - else if (gadget->a_alt_hnp_support) - DBG(dev, "HNP needs a different root port\n"); - value = printer_set_config(dev, wValue); - if (!value) - value = set_interface(dev, PRINTER_INTERFACE); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->config; - value = min(wLength, (u16) 1); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE || - !dev->config) - break; - - value = set_interface(dev, PRINTER_INTERFACE); - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != - (USB_DIR_IN|USB_RECIP_INTERFACE) - || !dev->config) - break; - - *(u8 *)req->buf = dev->interface; - value = min(wLength, (u16) 1); - break; - - default: - goto unknown; - } - break; - case USB_TYPE_CLASS: switch (ctrl->bRequest) { case 0: /* Get the IEEE-1284 PNP String */ /* Only one printer interface is supported. */ - if ((wIndex>>8) != PRINTER_INTERFACE) + if ((wIndex>>8) != dev->interface) break; value = (pnp_string[0]<<8)|pnp_string[1]; @@ -1232,7 +949,7 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case 1: /* Get Port Status */ /* Only one printer interface is supported. */ - if (wIndex != PRINTER_INTERFACE) + if (wIndex != dev->interface) break; *(u8 *)req->buf = dev->printer_status; @@ -1241,7 +958,7 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case 2: /* Soft Reset */ /* Only one printer interface is supported. */ - if (wIndex != PRINTER_INTERFACE) + if (wIndex != dev->interface) break; printer_soft_reset(dev); @@ -1262,44 +979,90 @@ unknown: wValue, wIndex, wLength); break; } + /* host either stalls (value < 0) or reports success */ + return value; +} - /* respond with data transfer before status phase? */ - if (value >= 0) { - req->length = value; - req->zero = value < wLength; - value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); - if (value < 0) { - DBG(dev, "ep_queue --> %d\n", value); - req->status = 0; - printer_setup_complete(gadget->ep0, req); - } +static int __init printer_func_bind(struct usb_configuration *c, + struct usb_function *f) +{ + struct printer_dev *dev = container_of(f, struct printer_dev, function); + struct usb_composite_dev *cdev = c->cdev; + struct usb_ep *in_ep; + struct usb_ep *out_ep = NULL; + int id; + int ret; + + id = usb_interface_id(c, f); + if (id < 0) + return id; + intf_desc.bInterfaceNumber = id; + + /* all we really need is bulk IN/OUT */ + in_ep = usb_ep_autoconfig(cdev->gadget, &fs_ep_in_desc); + if (!in_ep) { +autoconf_fail: + dev_err(&cdev->gadget->dev, "can't autoconfigure on %s\n", + cdev->gadget->name); + return -ENODEV; } + in_ep->driver_data = in_ep; /* claim */ - /* host either stalls (value < 0) or reports success */ - return value; + out_ep = usb_ep_autoconfig(cdev->gadget, &fs_ep_out_desc); + if (!out_ep) + goto autoconf_fail; + out_ep->driver_data = out_ep; /* claim */ + + /* assumes that all endpoints are dual-speed */ + hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress; + hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress; + + ret = usb_assign_descriptors(f, fs_printer_function, + hs_printer_function, NULL); + if (ret) + return ret; + + dev->in_ep = in_ep; + dev->out_ep = out_ep; + return 0; } -static void -printer_disconnect(struct usb_gadget *gadget) +static void printer_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ + usb_free_all_descriptors(f); +} + +static int printer_func_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + struct printer_dev *dev = container_of(f, struct printer_dev, function); + int ret = -ENOTSUPP; + + if (!alt) + ret = set_interface(dev, intf); + + return ret; +} + +static void printer_func_disable(struct usb_function *f) { - struct printer_dev *dev = get_gadget_data(gadget); + struct printer_dev *dev = container_of(f, struct printer_dev, function); unsigned long flags; DBG(dev, "%s\n", __func__); spin_lock_irqsave(&dev->lock, flags); - printer_reset_interface(dev); - spin_unlock_irqrestore(&dev->lock, flags); } -static void -printer_unbind(struct usb_gadget *gadget) +static void printer_cfg_unbind(struct usb_configuration *c) { - struct printer_dev *dev = get_gadget_data(gadget); + struct printer_dev *dev; struct usb_request *req; + dev = &usb_printer_gadget; DBG(dev, "%s\n", __func__); @@ -1337,34 +1100,45 @@ printer_unbind(struct usb_gadget *gadget) list_del(&req->list); printer_req_free(dev->out_ep, req); } - - if (dev->req) { - printer_req_free(gadget->ep0, dev->req); - dev->req = NULL; - } - - set_gadget_data(gadget, NULL); } -static int __init -printer_bind(struct usb_gadget *gadget) +static struct usb_configuration printer_cfg_driver = { + .label = "printer", + .unbind = printer_cfg_unbind, + .bConfigurationValue = 1, + .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, +}; + +static int __init printer_bind_config(struct usb_configuration *c) { + struct usb_gadget *gadget = c->cdev->gadget; struct printer_dev *dev; - struct usb_ep *in_ep, *out_ep; int status = -ENOMEM; - int gcnum; size_t len; u32 i; struct usb_request *req; + usb_ep_autoconfig_reset(gadget); + dev = &usb_printer_gadget; + dev->function.name = shortname; + dev->function.bind = printer_func_bind; + dev->function.setup = printer_func_setup; + dev->function.unbind = printer_func_unbind; + dev->function.set_alt = printer_func_set_alt; + dev->function.disable = printer_func_disable; + + status = usb_add_function(c, &dev->function); + if (status) + return status; /* Setup the sysfs files for the printer gadget. */ dev->pdev = device_create(usb_gadget_class, NULL, g_printer_devno, NULL, "g_printer"); if (IS_ERR(dev->pdev)) { ERROR(dev, "Failed to create device: g_printer\n"); + status = PTR_ERR(dev->pdev); goto fail; } @@ -1380,46 +1154,6 @@ printer_bind(struct usb_gadget *gadget) goto fail; } - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) { - device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum); - } else { - dev_warn(&gadget->dev, "controller '%s' not recognized\n", - gadget->name); - /* unrecognized, but safe unless bulk is REALLY quirky */ - device_desc.bcdDevice = - cpu_to_le16(0xFFFF); - } - snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - - device_desc.idVendor = - cpu_to_le16(PRINTER_VENDOR_NUM); - device_desc.idProduct = - cpu_to_le16(PRINTER_PRODUCT_NUM); - - /* support optional vendor/distro customization */ - if (idVendor) { - if (!idProduct) { - dev_err(&gadget->dev, "idVendor needs idProduct!\n"); - return -ENODEV; - } - device_desc.idVendor = cpu_to_le16(idVendor); - device_desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - device_desc.bcdDevice = cpu_to_le16(bcdDevice); - } - - if (iManufacturer) - strlcpy(manufacturer, iManufacturer, sizeof manufacturer); - - if (iProduct) - strlcpy(product_desc, iProduct, sizeof product_desc); - - if (iSerialNum) - strlcpy(serial_num, iSerialNum, sizeof serial_num); - if (iPNPstring) strlcpy(&pnp_string[2], iPNPstring, (sizeof pnp_string)-2); @@ -1427,33 +1161,12 @@ printer_bind(struct usb_gadget *gadget) pnp_string[0] = (len >> 8) & 0xFF; pnp_string[1] = len & 0xFF; - /* all we really need is bulk IN/OUT */ - usb_ep_autoconfig_reset(gadget); - in_ep = usb_ep_autoconfig(gadget, &fs_ep_in_desc); - if (!in_ep) { -autoconf_fail: - dev_err(&gadget->dev, "can't autoconfigure on %s\n", - gadget->name); - return -ENODEV; - } - in_ep->driver_data = in_ep; /* claim */ - - out_ep = usb_ep_autoconfig(gadget, &fs_ep_out_desc); - if (!out_ep) - goto autoconf_fail; - out_ep->driver_data = out_ep; /* claim */ - -#ifdef CONFIG_USB_GADGET_DUALSPEED - /* assumes that all endpoints are dual-speed */ - hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress; - hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress; -#endif /* DUALSPEED */ - usb_gadget_set_selfpowered(gadget); - if (gadget->is_otg) { - otg_desc.bmAttributes |= USB_OTG_HNP, - config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + if (gadget_is_otg(gadget)) { + otg_descriptor.bmAttributes |= USB_OTG_HNP; + printer_cfg_driver.descriptors = otg_desc; + printer_cfg_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; } spin_lock_init(&dev->lock); @@ -1467,7 +1180,6 @@ autoconf_fail: init_waitqueue_head(&dev->tx_wait); init_waitqueue_head(&dev->tx_flush_wait); - dev->config = 0; dev->interface = -1; dev->printer_cdev_open = 0; dev->printer_status = PRINTER_NOT_ERROR; @@ -1475,17 +1187,6 @@ autoconf_fail: dev->current_rx_bytes = 0; dev->current_rx_buf = NULL; - dev->in_ep = in_ep; - dev->out_ep = out_ep; - - /* preallocate control message data and buffer */ - dev->req = printer_req_alloc(gadget->ep0, USB_DESC_BUFSIZE, - GFP_KERNEL); - if (!dev->req) { - status = -ENOMEM; - goto fail; - } - for (i = 0; i < QLEN; i++) { req = printer_req_alloc(dev->in_ep, USB_BUFSIZE, GFP_KERNEL); if (!req) { @@ -1514,45 +1215,49 @@ autoconf_fail: list_add(&req->list, &dev->rx_reqs); } - dev->req->complete = printer_setup_complete; - /* finish hookup to lower layer ... */ dev->gadget = gadget; - set_gadget_data(gadget, dev); - gadget->ep0->driver_data = dev; INFO(dev, "%s, version: " DRIVER_VERSION "\n", driver_desc); - INFO(dev, "using %s, OUT %s IN %s\n", gadget->name, out_ep->name, - in_ep->name); - return 0; fail: - printer_unbind(gadget); + printer_cfg_unbind(c); return status; } -/*-------------------------------------------------------------------------*/ +static int printer_unbind(struct usb_composite_dev *cdev) +{ + return 0; +} -static struct usb_gadget_driver printer_driver = { - .max_speed = DEVSPEED, +static int __init printer_bind(struct usb_composite_dev *cdev) +{ + int ret; + + ret = usb_string_ids_tab(cdev, strings); + if (ret < 0) + return ret; + device_desc.iManufacturer = strings[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings[USB_GADGET_PRODUCT_IDX].id; + device_desc.iSerialNumber = strings[USB_GADGET_SERIAL_IDX].id; + + ret = usb_add_config(cdev, &printer_cfg_driver, printer_bind_config); + if (ret) + return ret; + usb_composite_overwrite_options(cdev, &coverwrite); + return ret; +} - .function = (char *) driver_desc, +static __refdata struct usb_composite_driver printer_driver = { + .name = shortname, + .dev = &device_desc, + .strings = dev_strings, + .max_speed = USB_SPEED_HIGH, + .bind = printer_bind, .unbind = printer_unbind, - - .setup = printer_setup, - .disconnect = printer_disconnect, - - .driver = { - .name = (char *) shortname, - .owner = THIS_MODULE, - }, }; -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Craig Nadler"); -MODULE_LICENSE("GPL"); - static int __init init(void) { @@ -1561,23 +1266,23 @@ init(void) usb_gadget_class = class_create(THIS_MODULE, "usb_printer_gadget"); if (IS_ERR(usb_gadget_class)) { status = PTR_ERR(usb_gadget_class); - ERROR(dev, "unable to create usb_gadget class %d\n", status); + pr_err("unable to create usb_gadget class %d\n", status); return status; } status = alloc_chrdev_region(&g_printer_devno, 0, 1, "USB printer gadget"); if (status) { - ERROR(dev, "alloc_chrdev_region %d\n", status); + pr_err("alloc_chrdev_region %d\n", status); class_destroy(usb_gadget_class); return status; } - status = usb_gadget_probe_driver(&printer_driver, printer_bind); + status = usb_composite_probe(&printer_driver); if (status) { class_destroy(usb_gadget_class); unregister_chrdev_region(g_printer_devno, 1); - DBG(dev, "usb_gadget_probe_driver %x\n", status); + pr_err("usb_gadget_probe_driver %x\n", status); } return status; @@ -1587,15 +1292,14 @@ module_init(init); static void __exit cleanup(void) { - int status; - mutex_lock(&usb_printer_gadget.lock_printer_io); - status = usb_gadget_unregister_driver(&printer_driver); - if (status) - ERROR(dev, "usb_gadget_unregister_driver %x\n", status); - + usb_composite_unregister(&printer_driver); unregister_chrdev_region(g_printer_devno, 1); class_destroy(usb_gadget_class); mutex_unlock(&usb_printer_gadget.lock_printer_io); } module_exit(cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Craig Nadler"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index dd470635f4f..9984437d295 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -21,18 +21,18 @@ #include <linux/ioport.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/mm.h> +#include <linux/platform_data/pxa2xx_udc.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/irq.h> #include <linux/clk.h> -#include <linux/err.h> #include <linux/seq_file.h> #include <linux/debugfs.h> #include <linux/io.h> @@ -41,7 +41,6 @@ #include <asm/byteorder.h> #include <asm/dma.h> #include <asm/gpio.h> -#include <asm/system.h> #include <asm/mach-types.h> #include <asm/unaligned.h> @@ -54,15 +53,13 @@ */ #ifdef CONFIG_ARCH_PXA #include <mach/pxa25x-udc.h> +#include <mach/hardware.h> #endif #ifdef CONFIG_ARCH_LUBBOCK #include <mach/lubbock.h> #endif -#include <asm/mach/udc_pxa2xx.h> - - /* * This driver handles the USB Device Controller (UDC) in Intel's PXA 25x * series processors. The UDC for the IXP 4xx series is very similar. @@ -219,7 +216,7 @@ static int pxa25x_ep_enable (struct usb_ep *_ep, struct pxa25x_udc *dev; ep = container_of (_ep, struct pxa25x_ep, ep); - if (!_ep || !desc || ep->desc || _ep->name == ep0name + if (!_ep || !desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT || ep->bEndpointAddress != desc->bEndpointAddress || ep->fifo_size < usb_endpoint_maxp (desc)) { @@ -250,7 +247,7 @@ static int pxa25x_ep_enable (struct usb_ep *_ep, return -ESHUTDOWN; } - ep->desc = desc; + ep->ep.desc = desc; ep->stopped = 0; ep->pio_irqs = 0; ep->ep.maxpacket = usb_endpoint_maxp (desc); @@ -270,7 +267,7 @@ static int pxa25x_ep_disable (struct usb_ep *_ep) unsigned long flags; ep = container_of (_ep, struct pxa25x_ep, ep); - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { DMSG("%s, %s not enabled\n", __func__, _ep ? ep->ep.name : NULL); return -EINVAL; @@ -282,7 +279,7 @@ static int pxa25x_ep_disable (struct usb_ep *_ep) /* flush fifo (mostly for IN buffers) */ pxa25x_ep_fifo_flush (_ep); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 1; local_irq_restore(flags); @@ -390,7 +387,7 @@ write_fifo (struct pxa25x_ep *ep, struct pxa25x_request *req) { unsigned max; - max = usb_endpoint_maxp(ep->desc); + max = usb_endpoint_maxp(ep->ep.desc); do { unsigned count; int is_last, is_short; @@ -644,7 +641,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) } ep = container_of(_ep, struct pxa25x_ep, ep); - if (unlikely (!_ep || (!ep->desc && ep->ep.name != ep0name))) { + if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) { DMSG("%s, bad ep\n", __func__); return -EINVAL; } @@ -660,7 +657,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) * we can report per-packet status. that also helps with dma. */ if (unlikely (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC - && req->req.length > usb_endpoint_maxp (ep->desc))) + && req->req.length > usb_endpoint_maxp(ep->ep.desc))) return -EMSGSIZE; DBG(DBG_NOISY, "%s queue req %p, len %d buf %p\n", @@ -673,7 +670,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* kickstart this i/o queue? */ if (list_empty(&ep->queue) && !ep->stopped) { - if (ep->desc == NULL/* ep0 */) { + if (ep->ep.desc == NULL/* ep0 */) { unsigned length = _req->length; switch (dev->ep0state) { @@ -722,7 +719,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) req = NULL; } - if (likely (req && ep->desc)) + if (likely(req && ep->ep.desc)) pio_irq_enable(ep->bEndpointAddress); } @@ -749,7 +746,7 @@ static void nuke(struct pxa25x_ep *ep, int status) queue); done(ep, req, status); } - if (ep->desc) + if (ep->ep.desc) pio_irq_disable (ep->bEndpointAddress); } @@ -792,7 +789,7 @@ static int pxa25x_ep_set_halt(struct usb_ep *_ep, int value) ep = container_of(_ep, struct pxa25x_ep, ep); if (unlikely (!_ep - || (!ep->desc && ep->ep.name != ep0name)) + || (!ep->ep.desc && ep->ep.name != ep0name)) || ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) { DMSG("%s, bad ep\n", __func__); return -EINVAL; @@ -820,7 +817,7 @@ static int pxa25x_ep_set_halt(struct usb_ep *_ep, int value) *ep->reg_udccs = UDCCS_BI_FST|UDCCS_BI_FTF; /* ep0 needs special care */ - if (!ep->desc) { + if (!ep->ep.desc) { start_watchdog(ep->dev); ep->dev->req_pending = 0; ep->dev->ep0state = EP0_STALL; @@ -994,14 +991,15 @@ static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) udc = container_of(_gadget, struct pxa25x_udc, gadget); - if (udc->transceiver) - return otg_set_power(udc->transceiver, mA); + if (!IS_ERR_OR_NULL(udc->transceiver)) + return usb_phy_set_power(udc->transceiver, mA); return -EOPNOTSUPP; } -static int pxa25x_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int pxa25x_stop(struct usb_gadget_driver *driver); +static int pxa25x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int pxa25x_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops pxa25x_udc_ops = { .get_frame = pxa25x_udc_get_frame, @@ -1009,8 +1007,8 @@ static const struct usb_gadget_ops pxa25x_udc_ops = { .vbus_session = pxa25x_udc_vbus_session, .pullup = pxa25x_udc_pullup, .vbus_draw = pxa25x_udc_vbus_draw, - .start = pxa25x_start, - .stop = pxa25x_stop, + .udc_start = pxa25x_udc_start, + .udc_stop = pxa25x_udc_stop, }; /*-------------------------------------------------------------------------*/ @@ -1087,7 +1085,7 @@ udc_seq_show(struct seq_file *m, void *_d) if (i != 0) { const struct usb_endpoint_descriptor *desc; - desc = ep->desc; + desc = ep->ep.desc; if (!desc) continue; tmp = *dev->ep [i].reg_udccs; @@ -1191,10 +1189,11 @@ static void udc_reinit(struct pxa25x_udc *dev) if (i != 0) list_add_tail (&ep->ep.ep_list, &dev->gadget.ep_list); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 0; INIT_LIST_HEAD (&ep->queue); ep->pio_irqs = 0; + usb_ep_set_maxpacket_limit(&ep->ep, ep->ep.maxpacket); } /* the rest was statically initialized, and is read-only */ @@ -1257,57 +1256,25 @@ static void udc_enable (struct pxa25x_udc *dev) * disconnect is reported. then a host may connect again, or * the driver might get unbound. */ -static int pxa25x_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int pxa25x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pxa25x_udc *dev = the_controller; + struct pxa25x_udc *dev = to_pxa25x(g); int retval; - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->disconnect - || !driver->setup) - return -EINVAL; - if (!dev) - return -ENODEV; - if (dev->driver) - return -EBUSY; - /* first hook up the driver ... */ dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; dev->pullup = 1; - retval = device_add (&dev->gadget.dev); - if (retval) { -fail: - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } - retval = bind(&dev->gadget); - if (retval) { - DMSG("bind to driver %s --> error %d\n", - driver->driver.name, retval); - device_del (&dev->gadget.dev); - goto fail; - } - /* ... then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ - DMSG("registered gadget driver '%s'\n", driver->driver.name); - /* connect to bus through transceiver */ - if (dev->transceiver) { - retval = otg_set_peripheral(dev->transceiver, &dev->gadget); - if (retval) { - DMSG("can't bind to transceiver\n"); - if (driver->unbind) - driver->unbind(&dev->gadget); + if (!IS_ERR_OR_NULL(dev->transceiver)) { + retval = otg_set_peripheral(dev->transceiver->otg, + &dev->gadget); + if (retval) goto bind_fail; - } } pullup(dev); @@ -1344,14 +1311,10 @@ stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver) udc_reinit(dev); } -static int pxa25x_stop(struct usb_gadget_driver *driver) +static int pxa25x_udc_stop(struct usb_gadget*g, + struct usb_gadget_driver *driver) { - struct pxa25x_udc *dev = the_controller; - - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver || !driver->unbind) - return -EINVAL; + struct pxa25x_udc *dev = to_pxa25x(g); local_irq_disable(); dev->pullup = 0; @@ -1359,17 +1322,13 @@ static int pxa25x_stop(struct usb_gadget_driver *driver) stop_activity(dev, driver); local_irq_enable(); - if (dev->transceiver) - (void) otg_set_peripheral(dev->transceiver, NULL); + if (!IS_ERR_OR_NULL(dev->transceiver)) + (void) otg_set_peripheral(dev->transceiver->otg, NULL); - driver->unbind(&dev->gadget); - dev->gadget.dev.driver = NULL; dev->driver = NULL; - device_del (&dev->gadget.dev); - - DMSG("unregistered gadget driver '%s'\n", driver->driver.name); dump_state(dev); + return 0; } @@ -2096,12 +2055,14 @@ static struct pxa25x_udc memory = { /* * probe - binds to the platform device */ -static int __init pxa25x_udc_probe(struct platform_device *pdev) +static int pxa25x_udc_probe(struct platform_device *pdev) { struct pxa25x_udc *dev = &memory; int retval, irq; u32 chiprev; + pr_info("%s: version %s\n", driver_name, DRIVER_VERSION); + /* insist on Intel/ARM/XScale */ asm("mrc%? p15, 0, %0, c0, c0" : "=r" (chiprev)); if ((chiprev & CP15R0_VENDOR_MASK) != CP15R0_XSCALE_VALUE) { @@ -2157,9 +2118,9 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) /* other non-static parts of init */ dev->dev = &pdev->dev; - dev->mach = pdev->dev.platform_data; + dev->mach = dev_get_platdata(&pdev->dev); - dev->transceiver = otg_get_transceiver(); + dev->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); if (gpio_is_valid(dev->mach->gpio_pullup)) { if ((retval = gpio_request(dev->mach->gpio_pullup, @@ -2176,10 +2137,6 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) dev->timer.function = udc_watchdog; dev->timer.data = (unsigned long) dev; - device_initialize(&dev->gadget.dev); - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; - the_controller = dev; platform_set_drvdata(pdev, dev); @@ -2200,19 +2157,15 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) #ifdef CONFIG_ARCH_LUBBOCK if (machine_is_lubbock()) { - retval = request_irq(LUBBOCK_USB_DISC_IRQ, - lubbock_vbus_irq, - IRQF_SAMPLE_RANDOM, - driver_name, dev); + retval = request_irq(LUBBOCK_USB_DISC_IRQ, lubbock_vbus_irq, + 0, driver_name, dev); if (retval != 0) { pr_err("%s: can't get irq %i, err %d\n", driver_name, LUBBOCK_USB_DISC_IRQ, retval); goto err_irq_lub; } - retval = request_irq(LUBBOCK_USB_IRQ, - lubbock_vbus_irq, - IRQF_SAMPLE_RANDOM, - driver_name, dev); + retval = request_irq(LUBBOCK_USB_IRQ, lubbock_vbus_irq, + 0, driver_name, dev); if (retval != 0) { pr_err("%s: can't get irq %i, err %d\n", driver_name, LUBBOCK_USB_IRQ, retval); @@ -2237,8 +2190,8 @@ lubbock_fail0: if (gpio_is_valid(dev->mach->gpio_pullup)) gpio_free(dev->mach->gpio_pullup); err_gpio_pullup: - if (dev->transceiver) { - otg_put_transceiver(dev->transceiver); + if (!IS_ERR_OR_NULL(dev->transceiver)) { + usb_put_phy(dev->transceiver); dev->transceiver = NULL; } clk_put(dev->clk); @@ -2251,14 +2204,14 @@ static void pxa25x_udc_shutdown(struct platform_device *_dev) pullup_off(); } -static int __exit pxa25x_udc_remove(struct platform_device *pdev) +static int pxa25x_udc_remove(struct platform_device *pdev) { struct pxa25x_udc *dev = platform_get_drvdata(pdev); - usb_del_gadget_udc(&dev->gadget); if (dev->driver) return -EBUSY; + usb_del_gadget_udc(&dev->gadget); dev->pullup = 0; pullup(dev); @@ -2279,12 +2232,11 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev) clk_put(dev->clk); - if (dev->transceiver) { - otg_put_transceiver(dev->transceiver); + if (!IS_ERR_OR_NULL(dev->transceiver)) { + usb_put_phy(dev->transceiver); dev->transceiver = NULL; } - platform_set_drvdata(pdev, NULL); the_controller = NULL; return 0; } @@ -2343,7 +2295,8 @@ static int pxa25x_udc_resume(struct platform_device *dev) static struct platform_driver udc_driver = { .shutdown = pxa25x_udc_shutdown, - .remove = __exit_p(pxa25x_udc_remove), + .probe = pxa25x_udc_probe, + .remove = pxa25x_udc_remove, .suspend = pxa25x_udc_suspend, .resume = pxa25x_udc_resume, .driver = { @@ -2352,18 +2305,7 @@ static struct platform_driver udc_driver = { }, }; -static int __init udc_init(void) -{ - pr_info("%s: version %s\n", driver_name, DRIVER_VERSION); - return platform_driver_probe(&udc_driver, pxa25x_udc_probe); -} -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); +module_platform_driver(udc_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR("Frank Becker, Robert Schwebel, David Brownell"); diff --git a/drivers/usb/gadget/pxa25x_udc.h b/drivers/usb/gadget/pxa25x_udc.h index 8eaf4e43726..3fe5931dc21 100644 --- a/drivers/usb/gadget/pxa25x_udc.h +++ b/drivers/usb/gadget/pxa25x_udc.h @@ -41,7 +41,6 @@ struct pxa25x_ep { struct usb_ep ep; struct pxa25x_udc *dev; - const struct usb_endpoint_descriptor *desc; struct list_head queue; unsigned long pio_irqs; @@ -119,7 +118,7 @@ struct pxa25x_udc { struct device *dev; struct clk *clk; struct pxa2xx_udc_mach_info *mach; - struct otg_transceiver *transceiver; + struct usb_phy *transceiver; u64 dma_mask; struct pxa25x_ep ep [PXA_UDC_NUM_ENDPOINTS]; @@ -127,6 +126,7 @@ struct pxa25x_udc { struct dentry *debugfs_udc; #endif }; +#define to_pxa25x(g) (container_of((g), struct pxa25x_udc, gadget)) /*-------------------------------------------------------------------------*/ @@ -226,7 +226,7 @@ dump_state(struct pxa25x_udc *dev) dev->stats.read.bytes, dev->stats.read.ops); for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++) { - if (dev->ep [i].desc == NULL) + if (dev->ep[i].ep.desc == NULL) continue; DMSG ("udccs%d = %02x\n", i, *dev->ep->reg_udccs); } diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index f4c44eb806c..cdf4d678be9 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/list.h> @@ -23,14 +24,12 @@ #include <linux/gpio.h> #include <linux/slab.h> #include <linux/prefetch.h> - -#include <asm/byteorder.h> -#include <mach/hardware.h> +#include <linux/byteorder/generic.h> +#include <linux/platform_data/pxa2xx_udc.h> #include <linux/usb.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> -#include <mach/udc.h> #include "pxa27x_udc.h" @@ -610,7 +609,7 @@ static void inc_ep_stats_bytes(struct pxa_ep *ep, int count, int is_in) * * Find the physical pxa27x ep, and setup its UDCCR */ -static __init void pxa_ep_setup(struct pxa_ep *ep) +static void pxa_ep_setup(struct pxa_ep *ep) { u32 new_udccr; @@ -632,7 +631,7 @@ static __init void pxa_ep_setup(struct pxa_ep *ep) * * Setup all pxa physical endpoints, except ep0 */ -static __init void pxa_eps_setup(struct pxa_udc *dev) +static void pxa_eps_setup(struct pxa_udc *dev) { unsigned int i; @@ -1573,7 +1572,7 @@ static int should_enable_udc(struct pxa_udc *udc) int put_on; put_on = ((udc->pullup_on) && (udc->driver)); - put_on &= ((udc->vbus_sensed) || (!udc->transceiver)); + put_on &= ((udc->vbus_sensed) || (IS_ERR_OR_NULL(udc->transceiver))); return put_on; } @@ -1594,7 +1593,7 @@ static int should_disable_udc(struct pxa_udc *udc) int put_off; put_off = ((!udc->pullup_on) || (!udc->driver)); - put_off |= ((!udc->vbus_sensed) && (udc->transceiver)); + put_off |= ((!udc->vbus_sensed) && (!IS_ERR_OR_NULL(udc->transceiver))); return put_off; } @@ -1665,14 +1664,15 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) struct pxa_udc *udc; udc = to_gadget_udc(_gadget); - if (udc->transceiver) - return otg_set_power(udc->transceiver, mA); + if (!IS_ERR_OR_NULL(udc->transceiver)) + return usb_phy_set_power(udc->transceiver, mA); return -EOPNOTSUPP; } -static int pxa27x_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int pxa27x_udc_stop(struct usb_gadget_driver *driver); +static int pxa27x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int pxa27x_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops pxa_udc_ops = { .get_frame = pxa_udc_get_frame, @@ -1680,8 +1680,8 @@ static const struct usb_gadget_ops pxa_udc_ops = { .pullup = pxa_udc_pullup, .vbus_session = pxa_udc_vbus_session, .vbus_draw = pxa_udc_vbus_draw, - .start = pxa27x_udc_start, - .stop = pxa27x_udc_stop, + .udc_start = pxa27x_udc_start, + .udc_stop = pxa27x_udc_stop, }; /** @@ -1716,7 +1716,7 @@ static void udc_disable(struct pxa_udc *udc) * Initializes gadget endpoint list, endpoints locks. No action is taken * on the hardware. */ -static __init void udc_init_data(struct pxa_udc *dev) +static void udc_init_data(struct pxa_udc *dev) { int i; struct pxa_ep *ep; @@ -1737,9 +1737,12 @@ static __init void udc_init_data(struct pxa_udc *dev) } /* USB endpoints init */ - for (i = 1; i < NR_USB_ENDPOINTS; i++) + for (i = 1; i < NR_USB_ENDPOINTS; i++) { list_add_tail(&dev->udc_usb_ep[i].usb_ep.ep_list, &dev->gadget.ep_list); + usb_ep_set_maxpacket_limit(&dev->udc_usb_ep[i].usb_ep, + dev->udc_usb_ep[i].usb_ep.maxpacket); + } } /** @@ -1801,44 +1804,22 @@ static void udc_enable(struct pxa_udc *udc) * * Returns 0 if no error, -EINVAL, -ENODEV, -EBUSY otherwise */ -static int pxa27x_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int pxa27x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pxa_udc *udc = the_controller; + struct pxa_udc *udc = to_pxa(g); int retval; - if (!driver || driver->max_speed < USB_SPEED_FULL || !bind - || !driver->disconnect || !driver->setup) - return -EINVAL; - if (!udc) - return -ENODEV; - if (udc->driver) - return -EBUSY; - /* first hook up the driver ... */ udc->driver = driver; - udc->gadget.dev.driver = &driver->driver; dplus_pullup(udc, 1); - retval = device_add(&udc->gadget.dev); - if (retval) { - dev_err(udc->dev, "device_add error %d\n", retval); - goto add_fail; - } - retval = bind(&udc->gadget); - if (retval) { - dev_err(udc->dev, "bind to driver %s --> error %d\n", - driver->driver.name, retval); - goto bind_fail; - } - dev_dbg(udc->dev, "registered gadget driver '%s'\n", - driver->driver.name); - - if (udc->transceiver) { - retval = otg_set_peripheral(udc->transceiver, &udc->gadget); + if (!IS_ERR_OR_NULL(udc->transceiver)) { + retval = otg_set_peripheral(udc->transceiver->otg, + &udc->gadget); if (retval) { dev_err(udc->dev, "can't bind to transceiver\n"); - goto transceiver_fail; + goto fail; } } @@ -1846,14 +1827,8 @@ static int pxa27x_udc_start(struct usb_gadget_driver *driver, udc_enable(udc); return 0; -transceiver_fail: - if (driver->unbind) - driver->unbind(&udc->gadget); -bind_fail: - device_del(&udc->gadget.dev); -add_fail: +fail: udc->driver = NULL; - udc->gadget.dev.driver = NULL; return retval; } @@ -1876,9 +1851,6 @@ static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver) for (i = 0; i < NR_USB_ENDPOINTS; i++) pxa_ep_disable(&udc->udc_usb_ep[i].usb_ep); - - if (driver) - driver->disconnect(&udc->gadget); } /** @@ -1887,28 +1859,19 @@ static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver) * * Returns 0 if no error, -ENODEV, -EINVAL otherwise */ -static int pxa27x_udc_stop(struct usb_gadget_driver *driver) +static int pxa27x_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pxa_udc *udc = the_controller; - - if (!udc) - return -ENODEV; - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; + struct pxa_udc *udc = to_pxa(g); stop_activity(udc, driver); udc_disable(udc); dplus_pullup(udc, 0); - driver->unbind(&udc->gadget); udc->driver = NULL; - device_del(&udc->gadget.dev); - dev_info(udc->dev, "unregistered gadget driver '%s'\n", - driver->driver.name); - - if (udc->transceiver) - return otg_set_peripheral(udc->transceiver, NULL); + if (!IS_ERR_OR_NULL(udc->transceiver)) + return otg_set_peripheral(udc->transceiver->otg, NULL); return 0; } @@ -2448,7 +2411,7 @@ static struct pxa_udc memory = { * Perform basic init : allocates udc clock, creates sysfs files, requests * irq. */ -static int __init pxa_udc_probe(struct platform_device *pdev) +static int pxa_udc_probe(struct platform_device *pdev) { struct resource *regs; struct pxa_udc *udc = &memory; @@ -2462,8 +2425,8 @@ static int __init pxa_udc_probe(struct platform_device *pdev) return udc->irq; udc->dev = &pdev->dev; - udc->mach = pdev->dev.platform_data; - udc->transceiver = otg_get_transceiver(); + udc->mach = dev_get_platdata(&pdev->dev); + udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); gpio = udc->mach->gpio_pullup; if (gpio_is_valid(gpio)) { @@ -2491,9 +2454,6 @@ static int __init pxa_udc_probe(struct platform_device *pdev) goto err_map; } - device_initialize(&udc->gadget.dev); - udc->gadget.dev.parent = &pdev->dev; - udc->gadget.dev.dma_mask = NULL; udc->vbus_sensed = 0; the_controller = udc; @@ -2506,15 +2466,18 @@ static int __init pxa_udc_probe(struct platform_device *pdev) IRQF_SHARED, driver_name, udc); if (retval != 0) { dev_err(udc->dev, "%s: can't get irq %i, err %d\n", - driver_name, IRQ_USB, retval); + driver_name, udc->irq, retval); goto err_irq; } + retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (retval) goto err_add_udc; pxa_init_debugfs(udc); + return 0; + err_add_udc: free_irq(udc->irq, udc); err_irq: @@ -2530,7 +2493,7 @@ err_clk: * pxa_udc_remove - removes the udc device driver * @_dev: platform device */ -static int __exit pxa_udc_remove(struct platform_device *_dev) +static int pxa_udc_remove(struct platform_device *_dev) { struct pxa_udc *udc = platform_get_drvdata(_dev); int gpio = udc->mach->gpio_pullup; @@ -2542,10 +2505,9 @@ static int __exit pxa_udc_remove(struct platform_device *_dev) if (gpio_is_valid(gpio)) gpio_free(gpio); - otg_put_transceiver(udc->transceiver); + usb_put_phy(udc->transceiver); udc->transceiver = NULL; - platform_set_drvdata(_dev, NULL); the_controller = NULL; clk_put(udc->clk); iounmap(udc->regs); @@ -2648,7 +2610,8 @@ static struct platform_driver udc_driver = { .name = "pxa27x-udc", .owner = THIS_MODULE, }, - .remove = __exit_p(pxa_udc_remove), + .probe = pxa_udc_probe, + .remove = pxa_udc_remove, .shutdown = pxa_udc_shutdown, #ifdef CONFIG_PM .suspend = pxa_udc_suspend, @@ -2656,22 +2619,7 @@ static struct platform_driver udc_driver = { #endif }; -static int __init udc_init(void) -{ - if (!cpu_is_pxa27x() && !cpu_is_pxa3xx()) - return -ENODEV; - - printk(KERN_INFO "%s: version %s\n", driver_name, DRIVER_VERSION); - return platform_driver_probe(&udc_driver, pxa_udc_probe); -} -module_init(udc_init); - - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); +module_platform_driver(udc_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR("Robert Jarzmik"); diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h index 7f4e8f424e8..28f2b53530f 100644 --- a/drivers/usb/gadget/pxa27x_udc.h +++ b/drivers/usb/gadget/pxa27x_udc.h @@ -418,7 +418,7 @@ struct udc_stats { * @irq: udc irq * @clk: udc clock * @usb_gadget: udc gadget structure - * @driver: bound gadget (zero, g_ether, g_file_storage, ...) + * @driver: bound gadget (zero, g_ether, g_mass_storage, ...) * @dev: device * @mach: machine info, used to activate specific GPIO * @transceiver: external transceiver to handle vbus sense and D+ pullup @@ -447,7 +447,7 @@ struct pxa_udc { struct usb_gadget_driver *driver; struct device *dev; struct pxa2xx_udc_mach_info *mach; - struct otg_transceiver *transceiver; + struct usb_phy *transceiver; enum ep0_state ep0state; struct udc_stats stats; @@ -473,6 +473,7 @@ struct pxa_udc { struct dentry *debugfs_eps; #endif }; +#define to_pxa(g) (container_of((g), struct pxa_udc, gadget)) static inline struct pxa_udc *to_gadget_udc(struct usb_gadget *gadget) { diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c index f5b8d215e1d..b698a490cc7 100644 --- a/drivers/usb/gadget/r8a66597-udc.c +++ b/drivers/usb/gadget/r8a66597-udc.c @@ -459,7 +459,7 @@ static int alloc_pipe_config(struct r8a66597_ep *ep, unsigned char *counter; int ret; - ep->desc = desc; + ep->ep.desc = desc; if (ep->pipenum) /* already allocated pipe */ return 0; @@ -648,7 +648,7 @@ static int sudmac_alloc_channel(struct r8a66597 *r8a66597, /* set SUDMAC parameters */ dma = &r8a66597->dma; dma->used = 1; - if (ep->desc->bEndpointAddress & USB_DIR_IN) { + if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) { dma->dir = 1; } else { dma->dir = 0; @@ -663,11 +663,7 @@ static int sudmac_alloc_channel(struct r8a66597 *r8a66597, ep->fifoctr = D0FIFOCTR; /* dma mapping */ - req->req.dma = dma_map_single(r8a66597_to_dev(ep->r8a66597), - req->req.buf, req->req.length, - dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - - return 0; + return usb_gadget_map_request(&r8a66597->gadget, &req->req, dma->dir); } static void sudmac_free_channel(struct r8a66597 *r8a66597, @@ -677,9 +673,7 @@ static void sudmac_free_channel(struct r8a66597 *r8a66597, if (!r8a66597_is_sudmac(r8a66597)) return; - dma_unmap_single(r8a66597_to_dev(ep->r8a66597), - req->req.dma, req->req.length, - ep->dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + usb_gadget_unmap_request(&r8a66597->gadget, &req->req, ep->dma->dir); r8a66597_bclr(r8a66597, DREQE, ep->fifosel); r8a66597_change_curpipe(r8a66597, 0, 0, ep->fifosel); @@ -776,7 +770,7 @@ static void start_packet_read(struct r8a66597_ep *ep, static void start_packet(struct r8a66597_ep *ep, struct r8a66597_request *req) { - if (ep->desc->bEndpointAddress & USB_DIR_IN) + if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) start_packet_write(ep, req); else start_packet_read(ep, req); @@ -936,7 +930,7 @@ __acquires(r8a66597->lock) if (restart) { req = get_request_from_ep(ep); - if (ep->desc) + if (ep->ep.desc) start_packet(ep, req); } } @@ -1122,7 +1116,7 @@ static void irq_pipe_ready(struct r8a66597 *r8a66597, u16 status, u16 enb) r8a66597_write(r8a66597, ~check, BRDYSTS); ep = r8a66597->pipenum2ep[pipenum]; req = get_request_from_ep(ep); - if (ep->desc->bEndpointAddress & USB_DIR_IN) + if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) irq_packet_write(ep, req); else irq_packet_read(ep, req); @@ -1176,7 +1170,7 @@ __acquires(r8a66597->lock) switch (ctrl->bRequestType & USB_RECIP_MASK) { case USB_RECIP_DEVICE: - status = 1 << USB_DEVICE_SELF_POWERED; + status = r8a66597->device_status; break; case USB_RECIP_INTERFACE: status = 0; @@ -1475,11 +1469,11 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597) u16 savepipe; u16 mask0; + spin_lock(&r8a66597->lock); + if (r8a66597_is_sudmac(r8a66597)) r8a66597_sudmac_irq(r8a66597); - spin_lock(&r8a66597->lock); - intsts0 = r8a66597_read(r8a66597, INTSTS0); intenb0 = r8a66597_read(r8a66597, INTENB0); @@ -1633,7 +1627,7 @@ static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, req->req.actual = 0; req->req.status = -EINPROGRESS; - if (ep->desc == NULL) /* control */ + if (ep->ep.desc == NULL) /* control */ start_ep0(ep, req); else { if (request && !ep->busy) @@ -1698,7 +1692,7 @@ static int r8a66597_set_wedge(struct usb_ep *_ep) ep = container_of(_ep, struct r8a66597_ep, ep); - if (!ep || !ep->desc) + if (!ep || !ep->ep.desc) return -EINVAL; spin_lock_irqsave(&ep->r8a66597->lock, flags); @@ -1806,16 +1800,29 @@ static int r8a66597_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static struct usb_gadget_ops r8a66597_gadget_ops = { +static int r8a66597_set_selfpowered(struct usb_gadget *gadget, int is_self) +{ + struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget); + + if (is_self) + r8a66597->device_status |= 1 << USB_DEVICE_SELF_POWERED; + else + r8a66597->device_status &= ~(1 << USB_DEVICE_SELF_POWERED); + + return 0; +} + +static const struct usb_gadget_ops r8a66597_gadget_ops = { .get_frame = r8a66597_get_frame, .udc_start = r8a66597_start, .udc_stop = r8a66597_stop, .pullup = r8a66597_pullup, + .set_selfpowered = r8a66597_set_selfpowered, }; static int __exit r8a66597_remove(struct platform_device *pdev) { - struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); + struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); usb_del_gadget_udc(&r8a66597->gadget); del_timer_sync(&r8a66597->timer); @@ -1824,13 +1831,12 @@ static int __exit r8a66597_remove(struct platform_device *pdev) iounmap(r8a66597->sudmac_reg); free_irq(platform_get_irq(pdev, 0), r8a66597); r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); -#ifdef CONFIG_HAVE_CLK + if (r8a66597->pdata->on_chip) { - clk_disable(r8a66597->clk); + clk_disable_unprepare(r8a66597->clk); clk_put(r8a66597->clk); } -#endif - device_unregister(&r8a66597->gadget.dev); + kfree(r8a66597); return 0; } @@ -1861,9 +1867,7 @@ static int __init r8a66597_sudmac_ioremap(struct r8a66597 *r8a66597, static int __init r8a66597_probe(struct platform_device *pdev) { -#ifdef CONFIG_HAVE_CLK char clk_name[8]; -#endif struct resource *res, *ires; int irq; void __iomem *reg = NULL; @@ -1900,34 +1904,23 @@ static int __init r8a66597_probe(struct platform_device *pdev) r8a66597 = kzalloc(sizeof(struct r8a66597), GFP_KERNEL); if (r8a66597 == NULL) { ret = -ENOMEM; - dev_err(&pdev->dev, "kzalloc error\n"); goto clean_up; } spin_lock_init(&r8a66597->lock); - dev_set_drvdata(&pdev->dev, r8a66597); - r8a66597->pdata = pdev->dev.platform_data; + platform_set_drvdata(pdev, r8a66597); + r8a66597->pdata = dev_get_platdata(&pdev->dev); r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; r8a66597->gadget.ops = &r8a66597_gadget_ops; - dev_set_name(&r8a66597->gadget.dev, "gadget"); r8a66597->gadget.max_speed = USB_SPEED_HIGH; - r8a66597->gadget.dev.parent = &pdev->dev; - r8a66597->gadget.dev.dma_mask = pdev->dev.dma_mask; - r8a66597->gadget.dev.release = pdev->dev.release; r8a66597->gadget.name = udc_name; - ret = device_register(&r8a66597->gadget.dev); - if (ret < 0) { - dev_err(&pdev->dev, "device_register failed\n"); - goto clean_up; - } init_timer(&r8a66597->timer); r8a66597->timer.function = r8a66597_timer; r8a66597->timer.data = (unsigned long)r8a66597; r8a66597->reg = reg; -#ifdef CONFIG_HAVE_CLK if (r8a66597->pdata->on_chip) { snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); r8a66597->clk = clk_get(&pdev->dev, clk_name); @@ -1935,11 +1928,11 @@ static int __init r8a66597_probe(struct platform_device *pdev) dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name); ret = PTR_ERR(r8a66597->clk); - goto clean_up_dev; + goto clean_up; } - clk_enable(r8a66597->clk); + clk_prepare_enable(r8a66597->clk); } -#endif + if (r8a66597->pdata->sudmac) { ret = r8a66597_sudmac_ioremap(r8a66597, pdev); if (ret < 0) @@ -1970,9 +1963,9 @@ static int __init r8a66597_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = r8a66597_ep_name[i]; ep->ep.ops = &r8a66597_ep_ops; - ep->ep.maxpacket = 512; + usb_ep_set_maxpacket_limit(&ep->ep, 512); } - r8a66597->ep[0].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&r8a66597->ep[0].ep, 64); r8a66597->ep[0].pipenum = 0; r8a66597->ep[0].fifoaddr = CFIFO; r8a66597->ep[0].fifosel = CFIFOSEL; @@ -1983,8 +1976,10 @@ static int __init r8a66597_probe(struct platform_device *pdev) r8a66597->ep0_req = r8a66597_alloc_request(&r8a66597->ep[0].ep, GFP_KERNEL); - if (r8a66597->ep0_req == NULL) + if (r8a66597->ep0_req == NULL) { + ret = -ENOMEM; goto clean_up3; + } r8a66597->ep0_req->complete = nop_completion; ret = usb_add_gadget_udc(&pdev->dev, &r8a66597->gadget); @@ -1999,14 +1994,10 @@ err_add_udc: clean_up3: free_irq(irq, r8a66597); clean_up2: -#ifdef CONFIG_HAVE_CLK if (r8a66597->pdata->on_chip) { - clk_disable(r8a66597->clk); + clk_disable_unprepare(r8a66597->clk); clk_put(r8a66597->clk); } -clean_up_dev: -#endif - device_unregister(&r8a66597->gadget.dev); clean_up: if (r8a66597) { if (r8a66597->sudmac_reg) @@ -2029,21 +2020,10 @@ static struct platform_driver r8a66597_driver = { .name = (char *) udc_name, }, }; -MODULE_ALIAS("platform:r8a66597_udc"); -static int __init r8a66597_udc_init(void) -{ - return platform_driver_probe(&r8a66597_driver, r8a66597_probe); -} -module_init(r8a66597_udc_init); - -static void __exit r8a66597_udc_cleanup(void) -{ - platform_driver_unregister(&r8a66597_driver); -} -module_exit(r8a66597_udc_cleanup); +module_platform_driver_probe(r8a66597_driver, r8a66597_probe); MODULE_DESCRIPTION("R8A66597 USB gadget driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yoshihiro Shimoda"); - +MODULE_ALIAS("platform:r8a66597_udc"); diff --git a/drivers/usb/gadget/r8a66597-udc.h b/drivers/usb/gadget/r8a66597-udc.h index 8e3de61cd4b..45c4b2df178 100644 --- a/drivers/usb/gadget/r8a66597-udc.h +++ b/drivers/usb/gadget/r8a66597-udc.h @@ -13,10 +13,7 @@ #ifndef __R8A66597_H__ #define __R8A66597_H__ -#ifdef CONFIG_HAVE_CLK #include <linux/clk.h> -#endif - #include <linux/usb/r8a66597.h> #define R8A66597_MAX_SAMPLING 10 @@ -72,7 +69,7 @@ struct r8a66597_ep { unsigned use_dma:1; u16 pipenum; u16 type; - const struct usb_endpoint_descriptor *desc; + /* register address */ unsigned char fifoaddr; unsigned char fifosel; @@ -92,9 +89,7 @@ struct r8a66597 { void __iomem *reg; void __iomem *sudmac_reg; -#ifdef CONFIG_HAVE_CLK struct clk *clk; -#endif struct r8a66597_platdata *pdata; struct usb_gadget gadget; @@ -111,6 +106,7 @@ struct r8a66597 { u16 old_vbus; u16 scount; u16 old_dvsq; + u16 device_status; /* for GET_STATUS */ /* pipe config */ unsigned char bulk; diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index d3cdffea9c8..95d2324f697 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -25,7 +25,6 @@ #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/list.h> #include <linux/proc_fs.h> #include <linux/slab.h> @@ -34,9 +33,9 @@ #include <asm/io.h> #include <asm/byteorder.h> -#include <asm/system.h> #include <asm/unaligned.h> +#include "u_rndis.h" #undef VERBOSE_DEBUG @@ -74,65 +73,65 @@ static rndis_resp_t *rndis_add_response(int configNr, u32 length); static const u32 oid_supported_list[] = { /* the general stuff */ - OID_GEN_SUPPORTED_LIST, - OID_GEN_HARDWARE_STATUS, - OID_GEN_MEDIA_SUPPORTED, - OID_GEN_MEDIA_IN_USE, - OID_GEN_MAXIMUM_FRAME_SIZE, - OID_GEN_LINK_SPEED, - OID_GEN_TRANSMIT_BLOCK_SIZE, - OID_GEN_RECEIVE_BLOCK_SIZE, - OID_GEN_VENDOR_ID, - OID_GEN_VENDOR_DESCRIPTION, - OID_GEN_VENDOR_DRIVER_VERSION, - OID_GEN_CURRENT_PACKET_FILTER, - OID_GEN_MAXIMUM_TOTAL_SIZE, - OID_GEN_MEDIA_CONNECT_STATUS, - OID_GEN_PHYSICAL_MEDIUM, + RNDIS_OID_GEN_SUPPORTED_LIST, + RNDIS_OID_GEN_HARDWARE_STATUS, + RNDIS_OID_GEN_MEDIA_SUPPORTED, + RNDIS_OID_GEN_MEDIA_IN_USE, + RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, + RNDIS_OID_GEN_LINK_SPEED, + RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE, + RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE, + RNDIS_OID_GEN_VENDOR_ID, + RNDIS_OID_GEN_VENDOR_DESCRIPTION, + RNDIS_OID_GEN_VENDOR_DRIVER_VERSION, + RNDIS_OID_GEN_CURRENT_PACKET_FILTER, + RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE, + RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, + RNDIS_OID_GEN_PHYSICAL_MEDIUM, /* the statistical stuff */ - OID_GEN_XMIT_OK, - OID_GEN_RCV_OK, - OID_GEN_XMIT_ERROR, - OID_GEN_RCV_ERROR, - OID_GEN_RCV_NO_BUFFER, + RNDIS_OID_GEN_XMIT_OK, + RNDIS_OID_GEN_RCV_OK, + RNDIS_OID_GEN_XMIT_ERROR, + RNDIS_OID_GEN_RCV_ERROR, + RNDIS_OID_GEN_RCV_NO_BUFFER, #ifdef RNDIS_OPTIONAL_STATS - OID_GEN_DIRECTED_BYTES_XMIT, - OID_GEN_DIRECTED_FRAMES_XMIT, - OID_GEN_MULTICAST_BYTES_XMIT, - OID_GEN_MULTICAST_FRAMES_XMIT, - OID_GEN_BROADCAST_BYTES_XMIT, - OID_GEN_BROADCAST_FRAMES_XMIT, - OID_GEN_DIRECTED_BYTES_RCV, - OID_GEN_DIRECTED_FRAMES_RCV, - OID_GEN_MULTICAST_BYTES_RCV, - OID_GEN_MULTICAST_FRAMES_RCV, - OID_GEN_BROADCAST_BYTES_RCV, - OID_GEN_BROADCAST_FRAMES_RCV, - OID_GEN_RCV_CRC_ERROR, - OID_GEN_TRANSMIT_QUEUE_LENGTH, + RNDIS_OID_GEN_DIRECTED_BYTES_XMIT, + RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT, + RNDIS_OID_GEN_MULTICAST_BYTES_XMIT, + RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT, + RNDIS_OID_GEN_BROADCAST_BYTES_XMIT, + RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT, + RNDIS_OID_GEN_DIRECTED_BYTES_RCV, + RNDIS_OID_GEN_DIRECTED_FRAMES_RCV, + RNDIS_OID_GEN_MULTICAST_BYTES_RCV, + RNDIS_OID_GEN_MULTICAST_FRAMES_RCV, + RNDIS_OID_GEN_BROADCAST_BYTES_RCV, + RNDIS_OID_GEN_BROADCAST_FRAMES_RCV, + RNDIS_OID_GEN_RCV_CRC_ERROR, + RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH, #endif /* RNDIS_OPTIONAL_STATS */ /* mandatory 802.3 */ /* the general stuff */ - OID_802_3_PERMANENT_ADDRESS, - OID_802_3_CURRENT_ADDRESS, - OID_802_3_MULTICAST_LIST, - OID_802_3_MAC_OPTIONS, - OID_802_3_MAXIMUM_LIST_SIZE, + RNDIS_OID_802_3_PERMANENT_ADDRESS, + RNDIS_OID_802_3_CURRENT_ADDRESS, + RNDIS_OID_802_3_MULTICAST_LIST, + RNDIS_OID_802_3_MAC_OPTIONS, + RNDIS_OID_802_3_MAXIMUM_LIST_SIZE, /* the statistical stuff */ - OID_802_3_RCV_ERROR_ALIGNMENT, - OID_802_3_XMIT_ONE_COLLISION, - OID_802_3_XMIT_MORE_COLLISIONS, + RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT, + RNDIS_OID_802_3_XMIT_ONE_COLLISION, + RNDIS_OID_802_3_XMIT_MORE_COLLISIONS, #ifdef RNDIS_OPTIONAL_STATS - OID_802_3_XMIT_DEFERRED, - OID_802_3_XMIT_MAX_COLLISIONS, - OID_802_3_RCV_OVERRUN, - OID_802_3_XMIT_UNDERRUN, - OID_802_3_XMIT_HEARTBEAT_FAILURE, - OID_802_3_XMIT_TIMES_CRS_LOST, - OID_802_3_XMIT_LATE_COLLISIONS, + RNDIS_OID_802_3_XMIT_DEFERRED, + RNDIS_OID_802_3_XMIT_MAX_COLLISIONS, + RNDIS_OID_802_3_RCV_OVERRUN, + RNDIS_OID_802_3_XMIT_UNDERRUN, + RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE, + RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST, + RNDIS_OID_802_3_XMIT_LATE_COLLISIONS, #endif /* RNDIS_OPTIONAL_STATS */ #ifdef RNDIS_PM @@ -201,8 +200,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, /* general oids (table 4-1) */ /* mandatory */ - case OID_GEN_SUPPORTED_LIST: - pr_debug("%s: OID_GEN_SUPPORTED_LIST\n", __func__); + case RNDIS_OID_GEN_SUPPORTED_LIST: + pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__); length = sizeof(oid_supported_list); count = length / sizeof(u32); for (i = 0; i < count; i++) @@ -211,8 +210,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_HARDWARE_STATUS: - pr_debug("%s: OID_GEN_HARDWARE_STATUS\n", __func__); + case RNDIS_OID_GEN_HARDWARE_STATUS: + pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__); /* Bogus question! * Hardware must be ready to receive high level protocols. * BTW: @@ -224,23 +223,23 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_MEDIA_SUPPORTED: - pr_debug("%s: OID_GEN_MEDIA_SUPPORTED\n", __func__); + case RNDIS_OID_GEN_MEDIA_SUPPORTED: + pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__); *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium); retval = 0; break; /* mandatory */ - case OID_GEN_MEDIA_IN_USE: - pr_debug("%s: OID_GEN_MEDIA_IN_USE\n", __func__); + case RNDIS_OID_GEN_MEDIA_IN_USE: + pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__); /* one medium, one transport... (maybe you do it better) */ *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium); retval = 0; break; /* mandatory */ - case OID_GEN_MAXIMUM_FRAME_SIZE: - pr_debug("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__); + case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE: + pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__); if (rndis_per_dev_params[configNr].dev) { *outbuf = cpu_to_le32( rndis_per_dev_params[configNr].dev->mtu); @@ -249,11 +248,11 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_LINK_SPEED: + case RNDIS_OID_GEN_LINK_SPEED: if (rndis_debug > 1) - pr_debug("%s: OID_GEN_LINK_SPEED\n", __func__); + pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__); if (rndis_per_dev_params[configNr].media_state - == NDIS_MEDIA_STATE_DISCONNECTED) + == RNDIS_MEDIA_STATE_DISCONNECTED) *outbuf = cpu_to_le32(0); else *outbuf = cpu_to_le32( @@ -262,8 +261,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_TRANSMIT_BLOCK_SIZE: - pr_debug("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__); + case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE: + pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__); if (rndis_per_dev_params[configNr].dev) { *outbuf = cpu_to_le32( rndis_per_dev_params[configNr].dev->mtu); @@ -272,8 +271,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_RECEIVE_BLOCK_SIZE: - pr_debug("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__); + case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE: + pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__); if (rndis_per_dev_params[configNr].dev) { *outbuf = cpu_to_le32( rndis_per_dev_params[configNr].dev->mtu); @@ -282,16 +281,16 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_VENDOR_ID: - pr_debug("%s: OID_GEN_VENDOR_ID\n", __func__); + case RNDIS_OID_GEN_VENDOR_ID: + pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__); *outbuf = cpu_to_le32( rndis_per_dev_params[configNr].vendorID); retval = 0; break; /* mandatory */ - case OID_GEN_VENDOR_DESCRIPTION: - pr_debug("%s: OID_GEN_VENDOR_DESCRIPTION\n", __func__); + case RNDIS_OID_GEN_VENDOR_DESCRIPTION: + pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__); if (rndis_per_dev_params[configNr].vendorDescr) { length = strlen(rndis_per_dev_params[configNr]. vendorDescr); @@ -304,38 +303,38 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, retval = 0; break; - case OID_GEN_VENDOR_DRIVER_VERSION: - pr_debug("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __func__); + case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION: + pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__); /* Created as LE */ *outbuf = rndis_driver_version; retval = 0; break; /* mandatory */ - case OID_GEN_CURRENT_PACKET_FILTER: - pr_debug("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __func__); + case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: + pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__); *outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter); retval = 0; break; /* mandatory */ - case OID_GEN_MAXIMUM_TOTAL_SIZE: - pr_debug("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__); + case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE: + pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__); *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE); retval = 0; break; /* mandatory */ - case OID_GEN_MEDIA_CONNECT_STATUS: + case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS: if (rndis_debug > 1) - pr_debug("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); + pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); *outbuf = cpu_to_le32(rndis_per_dev_params[configNr] .media_state); retval = 0; break; - case OID_GEN_PHYSICAL_MEDIUM: - pr_debug("%s: OID_GEN_PHYSICAL_MEDIUM\n", __func__); + case RNDIS_OID_GEN_PHYSICAL_MEDIUM: + pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__); *outbuf = cpu_to_le32(0); retval = 0; break; @@ -344,20 +343,20 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, * of MS-Windows expect OIDs that aren't specified there. Other * versions emit undefined RNDIS messages. DOCUMENT ALL THESE! */ - case OID_GEN_MAC_OPTIONS: /* from WinME */ - pr_debug("%s: OID_GEN_MAC_OPTIONS\n", __func__); + case RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */ + pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__); *outbuf = cpu_to_le32( - NDIS_MAC_OPTION_RECEIVE_SERIALIZED - | NDIS_MAC_OPTION_FULL_DUPLEX); + RNDIS_MAC_OPTION_RECEIVE_SERIALIZED + | RNDIS_MAC_OPTION_FULL_DUPLEX); retval = 0; break; /* statistics OIDs (table 4-2) */ /* mandatory */ - case OID_GEN_XMIT_OK: + case RNDIS_OID_GEN_XMIT_OK: if (rndis_debug > 1) - pr_debug("%s: OID_GEN_XMIT_OK\n", __func__); + pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__); if (stats) { *outbuf = cpu_to_le32(stats->tx_packets - stats->tx_errors - stats->tx_dropped); @@ -366,9 +365,9 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_RCV_OK: + case RNDIS_OID_GEN_RCV_OK: if (rndis_debug > 1) - pr_debug("%s: OID_GEN_RCV_OK\n", __func__); + pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__); if (stats) { *outbuf = cpu_to_le32(stats->rx_packets - stats->rx_errors - stats->rx_dropped); @@ -377,9 +376,9 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_XMIT_ERROR: + case RNDIS_OID_GEN_XMIT_ERROR: if (rndis_debug > 1) - pr_debug("%s: OID_GEN_XMIT_ERROR\n", __func__); + pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__); if (stats) { *outbuf = cpu_to_le32(stats->tx_errors); retval = 0; @@ -387,9 +386,9 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_RCV_ERROR: + case RNDIS_OID_GEN_RCV_ERROR: if (rndis_debug > 1) - pr_debug("%s: OID_GEN_RCV_ERROR\n", __func__); + pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__); if (stats) { *outbuf = cpu_to_le32(stats->rx_errors); retval = 0; @@ -397,8 +396,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_GEN_RCV_NO_BUFFER: - pr_debug("%s: OID_GEN_RCV_NO_BUFFER\n", __func__); + case RNDIS_OID_GEN_RCV_NO_BUFFER: + pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__); if (stats) { *outbuf = cpu_to_le32(stats->rx_dropped); retval = 0; @@ -408,8 +407,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, /* ieee802.3 OIDs (table 4-3) */ /* mandatory */ - case OID_802_3_PERMANENT_ADDRESS: - pr_debug("%s: OID_802_3_PERMANENT_ADDRESS\n", __func__); + case RNDIS_OID_802_3_PERMANENT_ADDRESS: + pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__); if (rndis_per_dev_params[configNr].dev) { length = ETH_ALEN; memcpy(outbuf, @@ -420,8 +419,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_802_3_CURRENT_ADDRESS: - pr_debug("%s: OID_802_3_CURRENT_ADDRESS\n", __func__); + case RNDIS_OID_802_3_CURRENT_ADDRESS: + pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__); if (rndis_per_dev_params[configNr].dev) { length = ETH_ALEN; memcpy(outbuf, @@ -432,23 +431,23 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_802_3_MULTICAST_LIST: - pr_debug("%s: OID_802_3_MULTICAST_LIST\n", __func__); + case RNDIS_OID_802_3_MULTICAST_LIST: + pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); /* Multicast base address only */ *outbuf = cpu_to_le32(0xE0000000); retval = 0; break; /* mandatory */ - case OID_802_3_MAXIMUM_LIST_SIZE: - pr_debug("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __func__); + case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE: + pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__); /* Multicast base address only */ *outbuf = cpu_to_le32(1); retval = 0; break; - case OID_802_3_MAC_OPTIONS: - pr_debug("%s: OID_802_3_MAC_OPTIONS\n", __func__); + case RNDIS_OID_802_3_MAC_OPTIONS: + pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__); *outbuf = cpu_to_le32(0); retval = 0; break; @@ -456,8 +455,8 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, /* ieee802.3 statistics OIDs (table 4-4) */ /* mandatory */ - case OID_802_3_RCV_ERROR_ALIGNMENT: - pr_debug("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); + case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT: + pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); if (stats) { *outbuf = cpu_to_le32(stats->rx_frame_errors); retval = 0; @@ -465,15 +464,15 @@ static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, break; /* mandatory */ - case OID_802_3_XMIT_ONE_COLLISION: - pr_debug("%s: OID_802_3_XMIT_ONE_COLLISION\n", __func__); + case RNDIS_OID_802_3_XMIT_ONE_COLLISION: + pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__); *outbuf = cpu_to_le32(0); retval = 0; break; /* mandatory */ - case OID_802_3_XMIT_MORE_COLLISIONS: - pr_debug("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __func__); + case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS: + pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__); *outbuf = cpu_to_le32(0); retval = 0; break; @@ -517,7 +516,7 @@ static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len, params = &rndis_per_dev_params[configNr]; switch (OID) { - case OID_GEN_CURRENT_PACKET_FILTER: + case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: /* these NDIS_PACKET_TYPE_* bitflags are shared with * cdc_filter; it's not RNDIS-specific @@ -526,7 +525,7 @@ static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len, * MULTICAST, ALL_MULTICAST, BROADCAST */ *params->filter = (u16)get_unaligned_le32(buf); - pr_debug("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n", + pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n", __func__, *params->filter); /* this call has a significant side effect: it's @@ -546,9 +545,9 @@ static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len, } break; - case OID_802_3_MULTICAST_LIST: + case RNDIS_OID_802_3_MULTICAST_LIST: /* I think we can ignore this */ - pr_debug("%s: OID_802_3_MULTICAST_LIST\n", __func__); + pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); retval = 0; break; @@ -578,7 +577,7 @@ static int rndis_init_response(int configNr, rndis_init_msg_type *buf) return -ENOMEM; resp = (rndis_init_cmplt_type *)r->buf; - resp->MessageType = cpu_to_le32(REMOTE_NDIS_INITIALIZE_CMPLT); + resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C); resp->MessageLength = cpu_to_le32(52); resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); @@ -622,7 +621,7 @@ static int rndis_query_response(int configNr, rndis_query_msg_type *buf) return -ENOMEM; resp = (rndis_query_cmplt_type *)r->buf; - resp->MessageType = cpu_to_le32(REMOTE_NDIS_QUERY_CMPLT); + resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C); resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID), @@ -669,7 +668,7 @@ static int rndis_set_response(int configNr, rndis_set_msg_type *buf) pr_debug("\n"); #endif - resp->MessageType = cpu_to_le32(REMOTE_NDIS_SET_CMPLT); + resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C); resp->MessageLength = cpu_to_le32(16); resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ if (gen_ndis_set_resp(configNr, le32_to_cpu(buf->OID), @@ -693,7 +692,7 @@ static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf) return -ENOMEM; resp = (rndis_reset_cmplt_type *)r->buf; - resp->MessageType = cpu_to_le32(REMOTE_NDIS_RESET_CMPLT); + resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C); resp->MessageLength = cpu_to_le32(16); resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); /* resent information */ @@ -717,8 +716,7 @@ static int rndis_keepalive_response(int configNr, return -ENOMEM; resp = (rndis_keepalive_cmplt_type *)r->buf; - resp->MessageType = cpu_to_le32( - REMOTE_NDIS_KEEPALIVE_CMPLT); + resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); resp->MessageLength = cpu_to_le32(16); resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); @@ -746,7 +744,7 @@ static int rndis_indicate_status_msg(int configNr, u32 status) return -ENOMEM; resp = (rndis_indicate_status_msg_type *)r->buf; - resp->MessageType = cpu_to_le32(REMOTE_NDIS_INDICATE_STATUS_MSG); + resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE); resp->MessageLength = cpu_to_le32(20); resp->Status = cpu_to_le32(status); resp->StatusBufferLength = cpu_to_le32(0); @@ -759,18 +757,20 @@ static int rndis_indicate_status_msg(int configNr, u32 status) int rndis_signal_connect(int configNr) { rndis_per_dev_params[configNr].media_state - = NDIS_MEDIA_STATE_CONNECTED; + = RNDIS_MEDIA_STATE_CONNECTED; return rndis_indicate_status_msg(configNr, RNDIS_STATUS_MEDIA_CONNECT); } +EXPORT_SYMBOL_GPL(rndis_signal_connect); int rndis_signal_disconnect(int configNr) { rndis_per_dev_params[configNr].media_state - = NDIS_MEDIA_STATE_DISCONNECTED; + = RNDIS_MEDIA_STATE_DISCONNECTED; return rndis_indicate_status_msg(configNr, RNDIS_STATUS_MEDIA_DISCONNECT); } +EXPORT_SYMBOL_GPL(rndis_signal_disconnect); void rndis_uninit(int configNr) { @@ -785,11 +785,13 @@ void rndis_uninit(int configNr) while ((buf = rndis_get_next_response(configNr, &length))) rndis_free_response(configNr, buf); } +EXPORT_SYMBOL_GPL(rndis_uninit); void rndis_set_host_mac(int configNr, const u8 *addr) { rndis_per_dev_params[configNr].host_mac = addr; } +EXPORT_SYMBOL_GPL(rndis_set_host_mac); /* * Message Parser @@ -818,15 +820,15 @@ int rndis_msg_parser(u8 configNr, u8 *buf) /* For USB: responses may take up to 10 seconds */ switch (MsgType) { - case REMOTE_NDIS_INITIALIZE_MSG: - pr_debug("%s: REMOTE_NDIS_INITIALIZE_MSG\n", + case RNDIS_MSG_INIT: + pr_debug("%s: RNDIS_MSG_INIT\n", __func__); params->state = RNDIS_INITIALIZED; return rndis_init_response(configNr, (rndis_init_msg_type *)buf); - case REMOTE_NDIS_HALT_MSG: - pr_debug("%s: REMOTE_NDIS_HALT_MSG\n", + case RNDIS_MSG_HALT: + pr_debug("%s: RNDIS_MSG_HALT\n", __func__); params->state = RNDIS_UNINITIALIZED; if (params->dev) { @@ -835,24 +837,24 @@ int rndis_msg_parser(u8 configNr, u8 *buf) } return 0; - case REMOTE_NDIS_QUERY_MSG: + case RNDIS_MSG_QUERY: return rndis_query_response(configNr, (rndis_query_msg_type *)buf); - case REMOTE_NDIS_SET_MSG: + case RNDIS_MSG_SET: return rndis_set_response(configNr, (rndis_set_msg_type *)buf); - case REMOTE_NDIS_RESET_MSG: - pr_debug("%s: REMOTE_NDIS_RESET_MSG\n", + case RNDIS_MSG_RESET: + pr_debug("%s: RNDIS_MSG_RESET\n", __func__); return rndis_reset_response(configNr, (rndis_reset_msg_type *)buf); - case REMOTE_NDIS_KEEPALIVE_MSG: + case RNDIS_MSG_KEEPALIVE: /* For USB: host does this every 5 seconds */ if (rndis_debug > 1) - pr_debug("%s: REMOTE_NDIS_KEEPALIVE_MSG\n", + pr_debug("%s: RNDIS_MSG_KEEPALIVE\n", __func__); return rndis_keepalive_response(configNr, (rndis_keepalive_msg_type *) @@ -865,31 +867,14 @@ int rndis_msg_parser(u8 configNr, u8 *buf) */ pr_warning("%s: unknown RNDIS message 0x%08X len %d\n", __func__, MsgType, MsgLength); - { - unsigned i; - for (i = 0; i < MsgLength; i += 16) { - pr_debug("%03d: " - " %02x %02x %02x %02x" - " %02x %02x %02x %02x" - " %02x %02x %02x %02x" - " %02x %02x %02x %02x" - "\n", - i, - buf[i], buf [i+1], - buf[i+2], buf[i+3], - buf[i+4], buf [i+5], - buf[i+6], buf[i+7], - buf[i+8], buf [i+9], - buf[i+10], buf[i+11], - buf[i+12], buf [i+13], - buf[i+14], buf[i+15]); - } - } + print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET, + buf, MsgLength); break; } return -ENOTSUPP; } +EXPORT_SYMBOL_GPL(rndis_msg_parser); int rndis_register(void (*resp_avail)(void *v), void *v) { @@ -911,6 +896,7 @@ int rndis_register(void (*resp_avail)(void *v), void *v) return -ENODEV; } +EXPORT_SYMBOL_GPL(rndis_register); void rndis_deregister(int configNr) { @@ -919,6 +905,7 @@ void rndis_deregister(int configNr) if (configNr >= RNDIS_MAX_CONFIGS) return; rndis_per_dev_params[configNr].used = 0; } +EXPORT_SYMBOL_GPL(rndis_deregister); int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) { @@ -932,6 +919,7 @@ int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) return 0; } +EXPORT_SYMBOL_GPL(rndis_set_param_dev); int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr) { @@ -944,6 +932,7 @@ int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr) return 0; } +EXPORT_SYMBOL_GPL(rndis_set_param_vendor); int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed) { @@ -955,6 +944,7 @@ int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed) return 0; } +EXPORT_SYMBOL_GPL(rndis_set_param_medium); void rndis_add_hdr(struct sk_buff *skb) { @@ -964,11 +954,12 @@ void rndis_add_hdr(struct sk_buff *skb) return; header = (void *)skb_push(skb, sizeof(*header)); memset(header, 0, sizeof *header); - header->MessageType = cpu_to_le32(REMOTE_NDIS_PACKET_MSG); + header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET); header->MessageLength = cpu_to_le32(skb->len); header->DataOffset = cpu_to_le32(36); header->DataLength = cpu_to_le32(skb->len - sizeof(*header)); } +EXPORT_SYMBOL_GPL(rndis_add_hdr); void rndis_free_response(int configNr, u8 *buf) { @@ -985,6 +976,7 @@ void rndis_free_response(int configNr, u8 *buf) } } } +EXPORT_SYMBOL_GPL(rndis_free_response); u8 *rndis_get_next_response(int configNr, u32 *length) { @@ -1006,6 +998,7 @@ u8 *rndis_get_next_response(int configNr, u32 *length) return NULL; } +EXPORT_SYMBOL_GPL(rndis_get_next_response); static rndis_resp_t *rndis_add_response(int configNr, u32 length) { @@ -1032,7 +1025,7 @@ int rndis_rm_hdr(struct gether *port, __le32 *tmp = (void *)skb->data; /* MessageType, MessageLength */ - if (cpu_to_le32(REMOTE_NDIS_PACKET_MSG) + if (cpu_to_le32(RNDIS_MSG_PACKET) != get_unaligned(tmp++)) { dev_kfree_skb_any(skb); return -EINVAL; @@ -1049,6 +1042,7 @@ int rndis_rm_hdr(struct gether *port, skb_queue_tail(list, skb); return 0; } +EXPORT_SYMBOL_GPL(rndis_rm_hdr); #ifdef CONFIG_USB_GADGET_DEBUG_FILES @@ -1074,7 +1068,7 @@ static int rndis_proc_show(struct seq_file *m, void *v) s = "RNDIS_INITIALIZED"; break; case RNDIS_DATA_INITIALIZED: s = "RNDIS_DATA_INITIALIZED"; break; - }; s; }), + } s; }), param->medium, (param->media_state) ? 0 : param->speed*100, (param->media_state) ? "disconnected" : "connected", @@ -1085,7 +1079,7 @@ static int rndis_proc_show(struct seq_file *m, void *v) static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { - rndis_params *p = PDE(file->f_path.dentry->d_inode)->data; + rndis_params *p = PDE_DATA(file_inode(file)); u32 speed = 0; int i, fl_speed = 0; @@ -1129,7 +1123,7 @@ static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, static int rndis_proc_open(struct inode *inode, struct file *file) { - return single_open(file, rndis_proc_show, PDE(inode)->data); + return single_open(file, rndis_proc_show, PDE_DATA(inode)); } static const struct file_operations rndis_proc_fops = { @@ -1174,7 +1168,7 @@ int rndis_init(void) rndis_per_dev_params[i].used = 0; rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED; rndis_per_dev_params[i].media_state - = NDIS_MEDIA_STATE_DISCONNECTED; + = RNDIS_MEDIA_STATE_DISCONNECTED; INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue)); } @@ -1193,3 +1187,4 @@ void rndis_exit(void) } #endif } + diff --git a/drivers/usb/gadget/rndis.h b/drivers/usb/gadget/rndis.h index 907c3300811..0f4abb4c377 100644 --- a/drivers/usb/gadget/rndis.h +++ b/drivers/usb/gadget/rndis.h @@ -15,58 +15,13 @@ #ifndef _LINUX_RNDIS_H #define _LINUX_RNDIS_H +#include <linux/rndis.h> +#include "u_ether.h" #include "ndis.h" #define RNDIS_MAXIMUM_FRAME_SIZE 1518 #define RNDIS_MAX_TOTAL_SIZE 1558 -/* Remote NDIS Versions */ -#define RNDIS_MAJOR_VERSION 1 -#define RNDIS_MINOR_VERSION 0 - -/* Status Values */ -#define RNDIS_STATUS_SUCCESS 0x00000000U /* Success */ -#define RNDIS_STATUS_FAILURE 0xC0000001U /* Unspecified error */ -#define RNDIS_STATUS_INVALID_DATA 0xC0010015U /* Invalid data */ -#define RNDIS_STATUS_NOT_SUPPORTED 0xC00000BBU /* Unsupported request */ -#define RNDIS_STATUS_MEDIA_CONNECT 0x4001000BU /* Device connected */ -#define RNDIS_STATUS_MEDIA_DISCONNECT 0x4001000CU /* Device disconnected */ -/* For all not specified status messages: - * RNDIS_STATUS_Xxx -> NDIS_STATUS_Xxx - */ - -/* Message Set for Connectionless (802.3) Devices */ -#define REMOTE_NDIS_PACKET_MSG 0x00000001U -#define REMOTE_NDIS_INITIALIZE_MSG 0x00000002U /* Initialize device */ -#define REMOTE_NDIS_HALT_MSG 0x00000003U -#define REMOTE_NDIS_QUERY_MSG 0x00000004U -#define REMOTE_NDIS_SET_MSG 0x00000005U -#define REMOTE_NDIS_RESET_MSG 0x00000006U -#define REMOTE_NDIS_INDICATE_STATUS_MSG 0x00000007U -#define REMOTE_NDIS_KEEPALIVE_MSG 0x00000008U - -/* Message completion */ -#define REMOTE_NDIS_INITIALIZE_CMPLT 0x80000002U -#define REMOTE_NDIS_QUERY_CMPLT 0x80000004U -#define REMOTE_NDIS_SET_CMPLT 0x80000005U -#define REMOTE_NDIS_RESET_CMPLT 0x80000006U -#define REMOTE_NDIS_KEEPALIVE_CMPLT 0x80000008U - -/* Device Flags */ -#define RNDIS_DF_CONNECTIONLESS 0x00000001U -#define RNDIS_DF_CONNECTION_ORIENTED 0x00000002U - -#define RNDIS_MEDIUM_802_3 0x00000000U - -/* from drivers/net/sk98lin/h/skgepnmi.h */ -#define OID_PNP_CAPABILITIES 0xFD010100 -#define OID_PNP_SET_POWER 0xFD010101 -#define OID_PNP_QUERY_POWER 0xFD010102 -#define OID_PNP_ADD_WAKE_UP_PATTERN 0xFD010103 -#define OID_PNP_REMOVE_WAKE_UP_PATTERN 0xFD010104 -#define OID_PNP_ENABLE_WAKE_UP 0xFD010106 - - typedef struct rndis_init_msg_type { __le32 MessageType; @@ -262,7 +217,4 @@ int rndis_signal_disconnect (int configNr); int rndis_state (int configNr); extern void rndis_set_host_mac (int configNr, const u8 *addr); -int rndis_init(void); -void rndis_exit (void); - #endif /* _LINUX_RNDIS_H */ diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c deleted file mode 100644 index 69295ba9d99..00000000000 --- a/drivers/usb/gadget/s3c-hsotg.c +++ /dev/null @@ -1,3475 +0,0 @@ -/* linux/drivers/usb/gadget/s3c-hsotg.c - * - * Copyright (c) 2011 Samsung Electronics Co., Ltd. - * http://www.samsung.com - * - * Copyright 2008 Openmoko, Inc. - * Copyright 2008 Simtec Electronics - * Ben Dooks <ben@simtec.co.uk> - * http://armlinux.simtec.co.uk/ - * - * S3C USB2.0 High-speed / OtG driver - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/slab.h> -#include <linux/clk.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include <mach/map.h> - -#include <plat/regs-usb-hsotg-phy.h> -#include <plat/regs-usb-hsotg.h> -#include <mach/regs-sys.h> -#include <plat/udc-hs.h> -#include <plat/cpu.h> - -#define DMA_ADDR_INVALID (~((dma_addr_t)0)) - -/* EP0_MPS_LIMIT - * - * Unfortunately there seems to be a limit of the amount of data that can - * be transferred by IN transactions on EP0. This is either 127 bytes or 3 - * packets (which practically means 1 packet and 63 bytes of data) when the - * MPS is set to 64. - * - * This means if we are wanting to move >127 bytes of data, we need to - * split the transactions up, but just doing one packet at a time does - * not work (this may be an implicit DATA0 PID on first packet of the - * transaction) and doing 2 packets is outside the controller's limits. - * - * If we try to lower the MPS size for EP0, then no transfers work properly - * for EP0, and the system will fail basic enumeration. As no cause for this - * has currently been found, we cannot support any large IN transfers for - * EP0. - */ -#define EP0_MPS_LIMIT 64 - -struct s3c_hsotg; -struct s3c_hsotg_req; - -/** - * struct s3c_hsotg_ep - driver endpoint definition. - * @ep: The gadget layer representation of the endpoint. - * @name: The driver generated name for the endpoint. - * @queue: Queue of requests for this endpoint. - * @parent: Reference back to the parent device structure. - * @req: The current request that the endpoint is processing. This is - * used to indicate an request has been loaded onto the endpoint - * and has yet to be completed (maybe due to data move, or simply - * awaiting an ack from the core all the data has been completed). - * @debugfs: File entry for debugfs file for this endpoint. - * @lock: State lock to protect contents of endpoint. - * @dir_in: Set to true if this endpoint is of the IN direction, which - * means that it is sending data to the Host. - * @index: The index for the endpoint registers. - * @name: The name array passed to the USB core. - * @halted: Set if the endpoint has been halted. - * @periodic: Set if this is a periodic ep, such as Interrupt - * @sent_zlp: Set if we've sent a zero-length packet. - * @total_data: The total number of data bytes done. - * @fifo_size: The size of the FIFO (for periodic IN endpoints) - * @fifo_load: The amount of data loaded into the FIFO (periodic IN) - * @last_load: The offset of data for the last start of request. - * @size_loaded: The last loaded size for DxEPTSIZE for periodic IN - * - * This is the driver's state for each registered enpoint, allowing it - * to keep track of transactions that need doing. Each endpoint has a - * lock to protect the state, to try and avoid using an overall lock - * for the host controller as much as possible. - * - * For periodic IN endpoints, we have fifo_size and fifo_load to try - * and keep track of the amount of data in the periodic FIFO for each - * of these as we don't have a status register that tells us how much - * is in each of them. (note, this may actually be useless information - * as in shared-fifo mode periodic in acts like a single-frame packet - * buffer than a fifo) - */ -struct s3c_hsotg_ep { - struct usb_ep ep; - struct list_head queue; - struct s3c_hsotg *parent; - struct s3c_hsotg_req *req; - struct dentry *debugfs; - - spinlock_t lock; - - unsigned long total_data; - unsigned int size_loaded; - unsigned int last_load; - unsigned int fifo_load; - unsigned short fifo_size; - - unsigned char dir_in; - unsigned char index; - - unsigned int halted:1; - unsigned int periodic:1; - unsigned int sent_zlp:1; - - char name[10]; -}; - -#define S3C_HSOTG_EPS (8+1) /* limit to 9 for the moment */ - -/** - * struct s3c_hsotg - driver state. - * @dev: The parent device supplied to the probe function - * @driver: USB gadget driver - * @plat: The platform specific configuration data. - * @regs: The memory area mapped for accessing registers. - * @regs_res: The resource that was allocated when claiming register space. - * @irq: The IRQ number we are using - * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos. - * @debug_root: root directrory for debugfs. - * @debug_file: main status file for debugfs. - * @debug_fifo: FIFO status file for debugfs. - * @ep0_reply: Request used for ep0 reply. - * @ep0_buff: Buffer for EP0 reply data, if needed. - * @ctrl_buff: Buffer for EP0 control requests. - * @ctrl_req: Request for EP0 control packets. - * @eps: The endpoints being supplied to the gadget framework - */ -struct s3c_hsotg { - struct device *dev; - struct usb_gadget_driver *driver; - struct s3c_hsotg_plat *plat; - - void __iomem *regs; - struct resource *regs_res; - int irq; - struct clk *clk; - - unsigned int dedicated_fifos:1; - - struct dentry *debug_root; - struct dentry *debug_file; - struct dentry *debug_fifo; - - struct usb_request *ep0_reply; - struct usb_request *ctrl_req; - u8 ep0_buff[8]; - u8 ctrl_buff[8]; - - struct usb_gadget gadget; - struct s3c_hsotg_ep eps[]; -}; - -/** - * struct s3c_hsotg_req - data transfer request - * @req: The USB gadget request - * @queue: The list of requests for the endpoint this is queued for. - * @in_progress: Has already had size/packets written to core - * @mapped: DMA buffer for this request has been mapped via dma_map_single(). - */ -struct s3c_hsotg_req { - struct usb_request req; - struct list_head queue; - unsigned char in_progress; - unsigned char mapped; -}; - -/* conversion functions */ -static inline struct s3c_hsotg_req *our_req(struct usb_request *req) -{ - return container_of(req, struct s3c_hsotg_req, req); -} - -static inline struct s3c_hsotg_ep *our_ep(struct usb_ep *ep) -{ - return container_of(ep, struct s3c_hsotg_ep, ep); -} - -static inline struct s3c_hsotg *to_hsotg(struct usb_gadget *gadget) -{ - return container_of(gadget, struct s3c_hsotg, gadget); -} - -static inline void __orr32(void __iomem *ptr, u32 val) -{ - writel(readl(ptr) | val, ptr); -} - -static inline void __bic32(void __iomem *ptr, u32 val) -{ - writel(readl(ptr) & ~val, ptr); -} - -/* forward decleration of functions */ -static void s3c_hsotg_dump(struct s3c_hsotg *hsotg); - -/** - * using_dma - return the DMA status of the driver. - * @hsotg: The driver state. - * - * Return true if we're using DMA. - * - * Currently, we have the DMA support code worked into everywhere - * that needs it, but the AMBA DMA implementation in the hardware can - * only DMA from 32bit aligned addresses. This means that gadgets such - * as the CDC Ethernet cannot work as they often pass packets which are - * not 32bit aligned. - * - * Unfortunately the choice to use DMA or not is global to the controller - * and seems to be only settable when the controller is being put through - * a core reset. This means we either need to fix the gadgets to take - * account of DMA alignment, or add bounce buffers (yuerk). - * - * Until this issue is sorted out, we always return 'false'. - */ -static inline bool using_dma(struct s3c_hsotg *hsotg) -{ - return false; /* support is not complete */ -} - -/** - * s3c_hsotg_en_gsint - enable one or more of the general interrupt - * @hsotg: The device state - * @ints: A bitmask of the interrupts to enable - */ -static void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints) -{ - u32 gsintmsk = readl(hsotg->regs + S3C_GINTMSK); - u32 new_gsintmsk; - - new_gsintmsk = gsintmsk | ints; - - if (new_gsintmsk != gsintmsk) { - dev_dbg(hsotg->dev, "gsintmsk now 0x%08x\n", new_gsintmsk); - writel(new_gsintmsk, hsotg->regs + S3C_GINTMSK); - } -} - -/** - * s3c_hsotg_disable_gsint - disable one or more of the general interrupt - * @hsotg: The device state - * @ints: A bitmask of the interrupts to enable - */ -static void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints) -{ - u32 gsintmsk = readl(hsotg->regs + S3C_GINTMSK); - u32 new_gsintmsk; - - new_gsintmsk = gsintmsk & ~ints; - - if (new_gsintmsk != gsintmsk) - writel(new_gsintmsk, hsotg->regs + S3C_GINTMSK); -} - -/** - * s3c_hsotg_ctrl_epint - enable/disable an endpoint irq - * @hsotg: The device state - * @ep: The endpoint index - * @dir_in: True if direction is in. - * @en: The enable value, true to enable - * - * Set or clear the mask for an individual endpoint's interrupt - * request. - */ -static void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg, - unsigned int ep, unsigned int dir_in, - unsigned int en) -{ - unsigned long flags; - u32 bit = 1 << ep; - u32 daint; - - if (!dir_in) - bit <<= 16; - - local_irq_save(flags); - daint = readl(hsotg->regs + S3C_DAINTMSK); - if (en) - daint |= bit; - else - daint &= ~bit; - writel(daint, hsotg->regs + S3C_DAINTMSK); - local_irq_restore(flags); -} - -/** - * s3c_hsotg_init_fifo - initialise non-periodic FIFOs - * @hsotg: The device instance. - */ -static void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg) -{ - unsigned int ep; - unsigned int addr; - unsigned int size; - int timeout; - u32 val; - - /* the ryu 2.6.24 release ahs - writel(0x1C0, hsotg->regs + S3C_GRXFSIZ); - writel(S3C_GNPTXFSIZ_NPTxFStAddr(0x200) | - S3C_GNPTXFSIZ_NPTxFDep(0x1C0), - hsotg->regs + S3C_GNPTXFSIZ); - */ - - /* set FIFO sizes to 2048/1024 */ - - writel(2048, hsotg->regs + S3C_GRXFSIZ); - writel(S3C_GNPTXFSIZ_NPTxFStAddr(2048) | - S3C_GNPTXFSIZ_NPTxFDep(1024), - hsotg->regs + S3C_GNPTXFSIZ); - - /* arange all the rest of the TX FIFOs, as some versions of this - * block have overlapping default addresses. This also ensures - * that if the settings have been changed, then they are set to - * known values. */ - - /* start at the end of the GNPTXFSIZ, rounded up */ - addr = 2048 + 1024; - size = 768; - - /* currently we allocate TX FIFOs for all possible endpoints, - * and assume that they are all the same size. */ - - for (ep = 0; ep <= 15; ep++) { - val = addr; - val |= size << S3C_DPTXFSIZn_DPTxFSize_SHIFT; - addr += size; - - writel(val, hsotg->regs + S3C_DPTXFSIZn(ep)); - } - - /* according to p428 of the design guide, we need to ensure that - * all fifos are flushed before continuing */ - - writel(S3C_GRSTCTL_TxFNum(0x10) | S3C_GRSTCTL_TxFFlsh | - S3C_GRSTCTL_RxFFlsh, hsotg->regs + S3C_GRSTCTL); - - /* wait until the fifos are both flushed */ - timeout = 100; - while (1) { - val = readl(hsotg->regs + S3C_GRSTCTL); - - if ((val & (S3C_GRSTCTL_TxFFlsh | S3C_GRSTCTL_RxFFlsh)) == 0) - break; - - if (--timeout == 0) { - dev_err(hsotg->dev, - "%s: timeout flushing fifos (GRSTCTL=%08x)\n", - __func__, val); - } - - udelay(1); - } - - dev_dbg(hsotg->dev, "FIFOs reset, timeout at %d\n", timeout); -} - -/** - * @ep: USB endpoint to allocate request for. - * @flags: Allocation flags - * - * Allocate a new USB request structure appropriate for the specified endpoint - */ -static struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, - gfp_t flags) -{ - struct s3c_hsotg_req *req; - - req = kzalloc(sizeof(struct s3c_hsotg_req), flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - - req->req.dma = DMA_ADDR_INVALID; - return &req->req; -} - -/** - * is_ep_periodic - return true if the endpoint is in periodic mode. - * @hs_ep: The endpoint to query. - * - * Returns true if the endpoint is in periodic mode, meaning it is being - * used for an Interrupt or ISO transfer. - */ -static inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep) -{ - return hs_ep->periodic; -} - -/** - * s3c_hsotg_unmap_dma - unmap the DMA memory being used for the request - * @hsotg: The device state. - * @hs_ep: The endpoint for the request - * @hs_req: The request being processed. - * - * This is the reverse of s3c_hsotg_map_dma(), called for the completion - * of a request to ensure the buffer is ready for access by the caller. -*/ -static void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct s3c_hsotg_req *hs_req) -{ - struct usb_request *req = &hs_req->req; - enum dma_data_direction dir; - - dir = hs_ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE; - - /* ignore this if we're not moving any data */ - if (hs_req->req.length == 0) - return; - - if (hs_req->mapped) { - /* we mapped this, so unmap and remove the dma */ - - dma_unmap_single(hsotg->dev, req->dma, req->length, dir); - - req->dma = DMA_ADDR_INVALID; - hs_req->mapped = 0; - } else { - dma_sync_single_for_cpu(hsotg->dev, req->dma, req->length, dir); - } -} - -/** - * s3c_hsotg_write_fifo - write packet Data to the TxFIFO - * @hsotg: The controller state. - * @hs_ep: The endpoint we're going to write for. - * @hs_req: The request to write data for. - * - * This is called when the TxFIFO has some space in it to hold a new - * transmission and we have something to give it. The actual setup of - * the data size is done elsewhere, so all we have to do is to actually - * write the data. - * - * The return value is zero if there is more space (or nothing was done) - * otherwise -ENOSPC is returned if the FIFO space was used up. - * - * This routine is only needed for PIO -*/ -static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct s3c_hsotg_req *hs_req) -{ - bool periodic = is_ep_periodic(hs_ep); - u32 gnptxsts = readl(hsotg->regs + S3C_GNPTXSTS); - int buf_pos = hs_req->req.actual; - int to_write = hs_ep->size_loaded; - void *data; - int can_write; - int pkt_round; - - to_write -= (buf_pos - hs_ep->last_load); - - /* if there's nothing to write, get out early */ - if (to_write == 0) - return 0; - - if (periodic && !hsotg->dedicated_fifos) { - u32 epsize = readl(hsotg->regs + S3C_DIEPTSIZ(hs_ep->index)); - int size_left; - int size_done; - - /* work out how much data was loaded so we can calculate - * how much data is left in the fifo. */ - - size_left = S3C_DxEPTSIZ_XferSize_GET(epsize); - - /* if shared fifo, we cannot write anything until the - * previous data has been completely sent. - */ - if (hs_ep->fifo_load != 0) { - s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_PTxFEmp); - return -ENOSPC; - } - - dev_dbg(hsotg->dev, "%s: left=%d, load=%d, fifo=%d, size %d\n", - __func__, size_left, - hs_ep->size_loaded, hs_ep->fifo_load, hs_ep->fifo_size); - - /* how much of the data has moved */ - size_done = hs_ep->size_loaded - size_left; - - /* how much data is left in the fifo */ - can_write = hs_ep->fifo_load - size_done; - dev_dbg(hsotg->dev, "%s: => can_write1=%d\n", - __func__, can_write); - - can_write = hs_ep->fifo_size - can_write; - dev_dbg(hsotg->dev, "%s: => can_write2=%d\n", - __func__, can_write); - - if (can_write <= 0) { - s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_PTxFEmp); - return -ENOSPC; - } - } else if (hsotg->dedicated_fifos && hs_ep->index != 0) { - can_write = readl(hsotg->regs + S3C_DTXFSTS(hs_ep->index)); - - can_write &= 0xffff; - can_write *= 4; - } else { - if (S3C_GNPTXSTS_NPTxQSpcAvail_GET(gnptxsts) == 0) { - dev_dbg(hsotg->dev, - "%s: no queue slots available (0x%08x)\n", - __func__, gnptxsts); - - s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_NPTxFEmp); - return -ENOSPC; - } - - can_write = S3C_GNPTXSTS_NPTxFSpcAvail_GET(gnptxsts); - can_write *= 4; /* fifo size is in 32bit quantities. */ - } - - dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, mps %d\n", - __func__, gnptxsts, can_write, to_write, hs_ep->ep.maxpacket); - - /* limit to 512 bytes of data, it seems at least on the non-periodic - * FIFO, requests of >512 cause the endpoint to get stuck with a - * fragment of the end of the transfer in it. - */ - if (can_write > 512) - can_write = 512; - - /* limit the write to one max-packet size worth of data, but allow - * the transfer to return that it did not run out of fifo space - * doing it. */ - if (to_write > hs_ep->ep.maxpacket) { - to_write = hs_ep->ep.maxpacket; - - s3c_hsotg_en_gsint(hsotg, - periodic ? S3C_GINTSTS_PTxFEmp : - S3C_GINTSTS_NPTxFEmp); - } - - /* see if we can write data */ - - if (to_write > can_write) { - to_write = can_write; - pkt_round = to_write % hs_ep->ep.maxpacket; - - /* Not sure, but we probably shouldn't be writing partial - * packets into the FIFO, so round the write down to an - * exact number of packets. - * - * Note, we do not currently check to see if we can ever - * write a full packet or not to the FIFO. - */ - - if (pkt_round) - to_write -= pkt_round; - - /* enable correct FIFO interrupt to alert us when there - * is more room left. */ - - s3c_hsotg_en_gsint(hsotg, - periodic ? S3C_GINTSTS_PTxFEmp : - S3C_GINTSTS_NPTxFEmp); - } - - dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n", - to_write, hs_req->req.length, can_write, buf_pos); - - if (to_write <= 0) - return -ENOSPC; - - hs_req->req.actual = buf_pos + to_write; - hs_ep->total_data += to_write; - - if (periodic) - hs_ep->fifo_load += to_write; - - to_write = DIV_ROUND_UP(to_write, 4); - data = hs_req->req.buf + buf_pos; - - writesl(hsotg->regs + S3C_EPFIFO(hs_ep->index), data, to_write); - - return (to_write >= can_write) ? -ENOSPC : 0; -} - -/** - * get_ep_limit - get the maximum data legnth for this endpoint - * @hs_ep: The endpoint - * - * Return the maximum data that can be queued in one go on a given endpoint - * so that transfers that are too long can be split. - */ -static unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep) -{ - int index = hs_ep->index; - unsigned maxsize; - unsigned maxpkt; - - if (index != 0) { - maxsize = S3C_DxEPTSIZ_XferSize_LIMIT + 1; - maxpkt = S3C_DxEPTSIZ_PktCnt_LIMIT + 1; - } else { - maxsize = 64+64; - if (hs_ep->dir_in) - maxpkt = S3C_DIEPTSIZ0_PktCnt_LIMIT + 1; - else - maxpkt = 2; - } - - /* we made the constant loading easier above by using +1 */ - maxpkt--; - maxsize--; - - /* constrain by packet count if maxpkts*pktsize is greater - * than the length register size. */ - - if ((maxpkt * hs_ep->ep.maxpacket) < maxsize) - maxsize = maxpkt * hs_ep->ep.maxpacket; - - return maxsize; -} - -/** - * s3c_hsotg_start_req - start a USB request from an endpoint's queue - * @hsotg: The controller state. - * @hs_ep: The endpoint to process a request for - * @hs_req: The request to start. - * @continuing: True if we are doing more for the current request. - * - * Start the given request running by setting the endpoint registers - * appropriately, and writing any data to the FIFOs. - */ -static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct s3c_hsotg_req *hs_req, - bool continuing) -{ - struct usb_request *ureq = &hs_req->req; - int index = hs_ep->index; - int dir_in = hs_ep->dir_in; - u32 epctrl_reg; - u32 epsize_reg; - u32 epsize; - u32 ctrl; - unsigned length; - unsigned packets; - unsigned maxreq; - - if (index != 0) { - if (hs_ep->req && !continuing) { - dev_err(hsotg->dev, "%s: active request\n", __func__); - WARN_ON(1); - return; - } else if (hs_ep->req != hs_req && continuing) { - dev_err(hsotg->dev, - "%s: continue different req\n", __func__); - WARN_ON(1); - return; - } - } - - epctrl_reg = dir_in ? S3C_DIEPCTL(index) : S3C_DOEPCTL(index); - epsize_reg = dir_in ? S3C_DIEPTSIZ(index) : S3C_DOEPTSIZ(index); - - dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x, ep %d, dir %s\n", - __func__, readl(hsotg->regs + epctrl_reg), index, - hs_ep->dir_in ? "in" : "out"); - - /* If endpoint is stalled, we will restart request later */ - ctrl = readl(hsotg->regs + epctrl_reg); - - if (ctrl & S3C_DxEPCTL_Stall) { - dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index); - return; - } - - length = ureq->length - ureq->actual; - - if (0) - dev_dbg(hsotg->dev, - "REQ buf %p len %d dma 0x%08x noi=%d zp=%d snok=%d\n", - ureq->buf, length, ureq->dma, - ureq->no_interrupt, ureq->zero, ureq->short_not_ok); - - maxreq = get_ep_limit(hs_ep); - if (length > maxreq) { - int round = maxreq % hs_ep->ep.maxpacket; - - dev_dbg(hsotg->dev, "%s: length %d, max-req %d, r %d\n", - __func__, length, maxreq, round); - - /* round down to multiple of packets */ - if (round) - maxreq -= round; - - length = maxreq; - } - - if (length) - packets = DIV_ROUND_UP(length, hs_ep->ep.maxpacket); - else - packets = 1; /* send one packet if length is zero. */ - - if (dir_in && index != 0) - epsize = S3C_DxEPTSIZ_MC(1); - else - epsize = 0; - - if (index != 0 && ureq->zero) { - /* test for the packets being exactly right for the - * transfer */ - - if (length == (packets * hs_ep->ep.maxpacket)) - packets++; - } - - epsize |= S3C_DxEPTSIZ_PktCnt(packets); - epsize |= S3C_DxEPTSIZ_XferSize(length); - - dev_dbg(hsotg->dev, "%s: %d@%d/%d, 0x%08x => 0x%08x\n", - __func__, packets, length, ureq->length, epsize, epsize_reg); - - /* store the request as the current one we're doing */ - hs_ep->req = hs_req; - - /* write size / packets */ - writel(epsize, hsotg->regs + epsize_reg); - - if (using_dma(hsotg)) { - unsigned int dma_reg; - - /* write DMA address to control register, buffer already - * synced by s3c_hsotg_ep_queue(). */ - - dma_reg = dir_in ? S3C_DIEPDMA(index) : S3C_DOEPDMA(index); - writel(ureq->dma, hsotg->regs + dma_reg); - - dev_dbg(hsotg->dev, "%s: 0x%08x => 0x%08x\n", - __func__, ureq->dma, dma_reg); - } - - ctrl |= S3C_DxEPCTL_EPEna; /* ensure ep enabled */ - ctrl |= S3C_DxEPCTL_USBActEp; - ctrl |= S3C_DxEPCTL_CNAK; /* clear NAK set by core */ - - dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); - writel(ctrl, hsotg->regs + epctrl_reg); - - /* set these, it seems that DMA support increments past the end - * of the packet buffer so we need to calculate the length from - * this information. */ - hs_ep->size_loaded = length; - hs_ep->last_load = ureq->actual; - - if (dir_in && !using_dma(hsotg)) { - /* set these anyway, we may need them for non-periodic in */ - hs_ep->fifo_load = 0; - - s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); - } - - /* clear the INTknTXFEmpMsk when we start request, more as a aide - * to debugging to see what is going on. */ - if (dir_in) - writel(S3C_DIEPMSK_INTknTXFEmpMsk, - hsotg->regs + S3C_DIEPINT(index)); - - /* Note, trying to clear the NAK here causes problems with transmit - * on the S3C6400 ending up with the TXFIFO becoming full. */ - - /* check ep is enabled */ - if (!(readl(hsotg->regs + epctrl_reg) & S3C_DxEPCTL_EPEna)) - dev_warn(hsotg->dev, - "ep%d: failed to become enabled (DxEPCTL=0x%08x)?\n", - index, readl(hsotg->regs + epctrl_reg)); - - dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", - __func__, readl(hsotg->regs + epctrl_reg)); -} - -/** - * s3c_hsotg_map_dma - map the DMA memory being used for the request - * @hsotg: The device state. - * @hs_ep: The endpoint the request is on. - * @req: The request being processed. - * - * We've been asked to queue a request, so ensure that the memory buffer - * is correctly setup for DMA. If we've been passed an extant DMA address - * then ensure the buffer has been synced to memory. If our buffer has no - * DMA memory, then we map the memory and mark our request to allow us to - * cleanup on completion. -*/ -static int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct usb_request *req) -{ - enum dma_data_direction dir; - struct s3c_hsotg_req *hs_req = our_req(req); - - dir = hs_ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE; - - /* if the length is zero, ignore the DMA data */ - if (hs_req->req.length == 0) - return 0; - - if (req->dma == DMA_ADDR_INVALID) { - dma_addr_t dma; - - dma = dma_map_single(hsotg->dev, req->buf, req->length, dir); - - if (unlikely(dma_mapping_error(hsotg->dev, dma))) - goto dma_error; - - if (dma & 3) { - dev_err(hsotg->dev, "%s: unaligned dma buffer\n", - __func__); - - dma_unmap_single(hsotg->dev, dma, req->length, dir); - return -EINVAL; - } - - hs_req->mapped = 1; - req->dma = dma; - } else { - dma_sync_single_for_cpu(hsotg->dev, req->dma, req->length, dir); - hs_req->mapped = 0; - } - - return 0; - -dma_error: - dev_err(hsotg->dev, "%s: failed to map buffer %p, %d bytes\n", - __func__, req->buf, req->length); - - return -EIO; -} - -static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, - gfp_t gfp_flags) -{ - struct s3c_hsotg_req *hs_req = our_req(req); - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hs = hs_ep->parent; - unsigned long irqflags; - bool first; - - dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", - ep->name, req, req->length, req->buf, req->no_interrupt, - req->zero, req->short_not_ok); - - /* initialise status of the request */ - INIT_LIST_HEAD(&hs_req->queue); - req->actual = 0; - req->status = -EINPROGRESS; - - /* if we're using DMA, sync the buffers as necessary */ - if (using_dma(hs)) { - int ret = s3c_hsotg_map_dma(hs, hs_ep, req); - if (ret) - return ret; - } - - spin_lock_irqsave(&hs_ep->lock, irqflags); - - first = list_empty(&hs_ep->queue); - list_add_tail(&hs_req->queue, &hs_ep->queue); - - if (first) - s3c_hsotg_start_req(hs, hs_ep, hs_req, false); - - spin_unlock_irqrestore(&hs_ep->lock, irqflags); - - return 0; -} - -static void s3c_hsotg_ep_free_request(struct usb_ep *ep, - struct usb_request *req) -{ - struct s3c_hsotg_req *hs_req = our_req(req); - - kfree(hs_req); -} - -/** - * s3c_hsotg_complete_oursetup - setup completion callback - * @ep: The endpoint the request was on. - * @req: The request completed. - * - * Called on completion of any requests the driver itself - * submitted that need cleaning up. - */ -static void s3c_hsotg_complete_oursetup(struct usb_ep *ep, - struct usb_request *req) -{ - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hsotg = hs_ep->parent; - - dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req); - - s3c_hsotg_ep_free_request(ep, req); -} - -/** - * ep_from_windex - convert control wIndex value to endpoint - * @hsotg: The driver state. - * @windex: The control request wIndex field (in host order). - * - * Convert the given wIndex into a pointer to an driver endpoint - * structure, or return NULL if it is not a valid endpoint. -*/ -static struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg, - u32 windex) -{ - struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; - int dir = (windex & USB_DIR_IN) ? 1 : 0; - int idx = windex & 0x7F; - - if (windex >= 0x100) - return NULL; - - if (idx > S3C_HSOTG_EPS) - return NULL; - - if (idx && ep->dir_in != dir) - return NULL; - - return ep; -} - -/** - * s3c_hsotg_send_reply - send reply to control request - * @hsotg: The device state - * @ep: Endpoint 0 - * @buff: Buffer for request - * @length: Length of reply. - * - * Create a request and queue it on the given endpoint. This is useful as - * an internal method of sending replies to certain control requests, etc. - */ -static int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *ep, - void *buff, - int length) -{ - struct usb_request *req; - int ret; - - dev_dbg(hsotg->dev, "%s: buff %p, len %d\n", __func__, buff, length); - - req = s3c_hsotg_ep_alloc_request(&ep->ep, GFP_ATOMIC); - hsotg->ep0_reply = req; - if (!req) { - dev_warn(hsotg->dev, "%s: cannot alloc req\n", __func__); - return -ENOMEM; - } - - req->buf = hsotg->ep0_buff; - req->length = length; - req->zero = 1; /* always do zero-length final transfer */ - req->complete = s3c_hsotg_complete_oursetup; - - if (length) - memcpy(req->buf, buff, length); - else - ep->sent_zlp = 1; - - ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); - if (ret) { - dev_warn(hsotg->dev, "%s: cannot queue req\n", __func__); - return ret; - } - - return 0; -} - -/** - * s3c_hsotg_process_req_status - process request GET_STATUS - * @hsotg: The device state - * @ctrl: USB control request - */ -static int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg, - struct usb_ctrlrequest *ctrl) -{ - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; - struct s3c_hsotg_ep *ep; - __le16 reply; - int ret; - - dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__); - - if (!ep0->dir_in) { - dev_warn(hsotg->dev, "%s: direction out?\n", __func__); - return -EINVAL; - } - - switch (ctrl->bRequestType & USB_RECIP_MASK) { - case USB_RECIP_DEVICE: - reply = cpu_to_le16(0); /* bit 0 => self powered, - * bit 1 => remote wakeup */ - break; - - case USB_RECIP_INTERFACE: - /* currently, the data result should be zero */ - reply = cpu_to_le16(0); - break; - - case USB_RECIP_ENDPOINT: - ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); - if (!ep) - return -ENOENT; - - reply = cpu_to_le16(ep->halted ? 1 : 0); - break; - - default: - return 0; - } - - if (le16_to_cpu(ctrl->wLength) != 2) - return -EINVAL; - - ret = s3c_hsotg_send_reply(hsotg, ep0, &reply, 2); - if (ret) { - dev_err(hsotg->dev, "%s: failed to send reply\n", __func__); - return ret; - } - - return 1; -} - -static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value); - -/** - * get_ep_head - return the first request on the endpoint - * @hs_ep: The controller endpoint to get - * - * Get the first request on the endpoint. - */ -static struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) -{ - if (list_empty(&hs_ep->queue)) - return NULL; - - return list_first_entry(&hs_ep->queue, struct s3c_hsotg_req, queue); -} - -/** - * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE - * @hsotg: The device state - * @ctrl: USB control request - */ -static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg, - struct usb_ctrlrequest *ctrl) -{ - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; - struct s3c_hsotg_req *hs_req; - bool restart; - bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); - struct s3c_hsotg_ep *ep; - int ret; - - dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", - __func__, set ? "SET" : "CLEAR"); - - if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { - ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); - if (!ep) { - dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", - __func__, le16_to_cpu(ctrl->wIndex)); - return -ENOENT; - } - - switch (le16_to_cpu(ctrl->wValue)) { - case USB_ENDPOINT_HALT: - s3c_hsotg_ep_sethalt(&ep->ep, set); - - ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); - if (ret) { - dev_err(hsotg->dev, - "%s: failed to send reply\n", __func__); - return ret; - } - - if (!set) { - /* - * If we have request in progress, - * then complete it - */ - if (ep->req) { - hs_req = ep->req; - ep->req = NULL; - list_del_init(&hs_req->queue); - hs_req->req.complete(&ep->ep, - &hs_req->req); - } - - /* If we have pending request, then start it */ - restart = !list_empty(&ep->queue); - if (restart) { - hs_req = get_ep_head(ep); - s3c_hsotg_start_req(hsotg, ep, - hs_req, false); - } - } - - break; - - default: - return -ENOENT; - } - } else - return -ENOENT; /* currently only deal with endpoint */ - - return 1; -} - -/** - * s3c_hsotg_process_control - process a control request - * @hsotg: The device state - * @ctrl: The control request received - * - * The controller has received the SETUP phase of a control request, and - * needs to work out what to do next (and whether to pass it on to the - * gadget driver). - */ -static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg, - struct usb_ctrlrequest *ctrl) -{ - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; - int ret = 0; - u32 dcfg; - - ep0->sent_zlp = 0; - - dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", - ctrl->bRequest, ctrl->bRequestType, - ctrl->wValue, ctrl->wLength); - - /* record the direction of the request, for later use when enquing - * packets onto EP0. */ - - ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; - dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); - - /* if we've no data with this request, then the last part of the - * transaction is going to implicitly be IN. */ - if (ctrl->wLength == 0) - ep0->dir_in = 1; - - if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { - switch (ctrl->bRequest) { - case USB_REQ_SET_ADDRESS: - dcfg = readl(hsotg->regs + S3C_DCFG); - dcfg &= ~S3C_DCFG_DevAddr_MASK; - dcfg |= ctrl->wValue << S3C_DCFG_DevAddr_SHIFT; - writel(dcfg, hsotg->regs + S3C_DCFG); - - dev_info(hsotg->dev, "new address %d\n", ctrl->wValue); - - ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); - return; - - case USB_REQ_GET_STATUS: - ret = s3c_hsotg_process_req_status(hsotg, ctrl); - break; - - case USB_REQ_CLEAR_FEATURE: - case USB_REQ_SET_FEATURE: - ret = s3c_hsotg_process_req_feature(hsotg, ctrl); - break; - } - } - - /* as a fallback, try delivering it to the driver to deal with */ - - if (ret == 0 && hsotg->driver) { - ret = hsotg->driver->setup(&hsotg->gadget, ctrl); - if (ret < 0) - dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); - } - - /* the request is either unhandlable, or is not formatted correctly - * so respond with a STALL for the status stage to indicate failure. - */ - - if (ret < 0) { - u32 reg; - u32 ctrl; - - dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in); - reg = (ep0->dir_in) ? S3C_DIEPCTL0 : S3C_DOEPCTL0; - - /* S3C_DxEPCTL_Stall will be cleared by EP once it has - * taken effect, so no need to clear later. */ - - ctrl = readl(hsotg->regs + reg); - ctrl |= S3C_DxEPCTL_Stall; - ctrl |= S3C_DxEPCTL_CNAK; - writel(ctrl, hsotg->regs + reg); - - dev_dbg(hsotg->dev, - "written DxEPCTL=0x%08x to %08x (DxEPCTL=0x%08x)\n", - ctrl, reg, readl(hsotg->regs + reg)); - - /* don't believe we need to anything more to get the EP - * to reply with a STALL packet */ - } -} - -static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg); - -/** - * s3c_hsotg_complete_setup - completion of a setup transfer - * @ep: The endpoint the request was on. - * @req: The request completed. - * - * Called on completion of any requests the driver itself submitted for - * EP0 setup packets - */ -static void s3c_hsotg_complete_setup(struct usb_ep *ep, - struct usb_request *req) -{ - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hsotg = hs_ep->parent; - - if (req->status < 0) { - dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status); - return; - } - - if (req->actual == 0) - s3c_hsotg_enqueue_setup(hsotg); - else - s3c_hsotg_process_control(hsotg, req->buf); -} - -/** - * s3c_hsotg_enqueue_setup - start a request for EP0 packets - * @hsotg: The device state. - * - * Enqueue a request on EP0 if necessary to received any SETUP packets - * received from the host. - */ -static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg) -{ - struct usb_request *req = hsotg->ctrl_req; - struct s3c_hsotg_req *hs_req = our_req(req); - int ret; - - dev_dbg(hsotg->dev, "%s: queueing setup request\n", __func__); - - req->zero = 0; - req->length = 8; - req->buf = hsotg->ctrl_buff; - req->complete = s3c_hsotg_complete_setup; - - if (!list_empty(&hs_req->queue)) { - dev_dbg(hsotg->dev, "%s already queued???\n", __func__); - return; - } - - hsotg->eps[0].dir_in = 0; - - ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); - if (ret < 0) { - dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); - /* Don't think there's much we can do other than watch the - * driver fail. */ - } -} - -/** - * s3c_hsotg_complete_request - complete a request given to us - * @hsotg: The device state. - * @hs_ep: The endpoint the request was on. - * @hs_req: The request to complete. - * @result: The result code (0 => Ok, otherwise errno) - * - * The given request has finished, so call the necessary completion - * if it has one and then look to see if we can start a new request - * on the endpoint. - * - * Note, expects the ep to already be locked as appropriate. -*/ -static void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct s3c_hsotg_req *hs_req, - int result) -{ - bool restart; - - if (!hs_req) { - dev_dbg(hsotg->dev, "%s: nothing to complete?\n", __func__); - return; - } - - dev_dbg(hsotg->dev, "complete: ep %p %s, req %p, %d => %p\n", - hs_ep, hs_ep->ep.name, hs_req, result, hs_req->req.complete); - - /* only replace the status if we've not already set an error - * from a previous transaction */ - - if (hs_req->req.status == -EINPROGRESS) - hs_req->req.status = result; - - hs_ep->req = NULL; - list_del_init(&hs_req->queue); - - if (using_dma(hsotg)) - s3c_hsotg_unmap_dma(hsotg, hs_ep, hs_req); - - /* call the complete request with the locks off, just in case the - * request tries to queue more work for this endpoint. */ - - if (hs_req->req.complete) { - spin_unlock(&hs_ep->lock); - hs_req->req.complete(&hs_ep->ep, &hs_req->req); - spin_lock(&hs_ep->lock); - } - - /* Look to see if there is anything else to do. Note, the completion - * of the previous request may have caused a new request to be started - * so be careful when doing this. */ - - if (!hs_ep->req && result >= 0) { - restart = !list_empty(&hs_ep->queue); - if (restart) { - hs_req = get_ep_head(hs_ep); - s3c_hsotg_start_req(hsotg, hs_ep, hs_req, false); - } - } -} - -/** - * s3c_hsotg_complete_request_lock - complete a request given to us (locked) - * @hsotg: The device state. - * @hs_ep: The endpoint the request was on. - * @hs_req: The request to complete. - * @result: The result code (0 => Ok, otherwise errno) - * - * See s3c_hsotg_complete_request(), but called with the endpoint's - * lock held. -*/ -static void s3c_hsotg_complete_request_lock(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct s3c_hsotg_req *hs_req, - int result) -{ - unsigned long flags; - - spin_lock_irqsave(&hs_ep->lock, flags); - s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); - spin_unlock_irqrestore(&hs_ep->lock, flags); -} - -/** - * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint - * @hsotg: The device state. - * @ep_idx: The endpoint index for the data - * @size: The size of data in the fifo, in bytes - * - * The FIFO status shows there is data to read from the FIFO for a given - * endpoint, so sort out whether we need to read the data into a request - * that has been made for that endpoint. - */ -static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) -{ - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; - struct s3c_hsotg_req *hs_req = hs_ep->req; - void __iomem *fifo = hsotg->regs + S3C_EPFIFO(ep_idx); - int to_read; - int max_req; - int read_ptr; - - if (!hs_req) { - u32 epctl = readl(hsotg->regs + S3C_DOEPCTL(ep_idx)); - int ptr; - - dev_warn(hsotg->dev, - "%s: FIFO %d bytes on ep%d but no req (DxEPCTl=0x%08x)\n", - __func__, size, ep_idx, epctl); - - /* dump the data from the FIFO, we've nothing we can do */ - for (ptr = 0; ptr < size; ptr += 4) - (void)readl(fifo); - - return; - } - - spin_lock(&hs_ep->lock); - - to_read = size; - read_ptr = hs_req->req.actual; - max_req = hs_req->req.length - read_ptr; - - dev_dbg(hsotg->dev, "%s: read %d/%d, done %d/%d\n", - __func__, to_read, max_req, read_ptr, hs_req->req.length); - - if (to_read > max_req) { - /* more data appeared than we where willing - * to deal with in this request. - */ - - /* currently we don't deal this */ - WARN_ON_ONCE(1); - } - - hs_ep->total_data += to_read; - hs_req->req.actual += to_read; - to_read = DIV_ROUND_UP(to_read, 4); - - /* note, we might over-write the buffer end by 3 bytes depending on - * alignment of the data. */ - readsl(fifo, hs_req->req.buf + read_ptr, to_read); - - spin_unlock(&hs_ep->lock); -} - -/** - * s3c_hsotg_send_zlp - send zero-length packet on control endpoint - * @hsotg: The device instance - * @req: The request currently on this endpoint - * - * Generate a zero-length IN packet request for terminating a SETUP - * transaction. - * - * Note, since we don't write any data to the TxFIFO, then it is - * currently believed that we do not need to wait for any space in - * the TxFIFO. - */ -static void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg, - struct s3c_hsotg_req *req) -{ - u32 ctrl; - - if (!req) { - dev_warn(hsotg->dev, "%s: no request?\n", __func__); - return; - } - - if (req->req.length == 0) { - hsotg->eps[0].sent_zlp = 1; - s3c_hsotg_enqueue_setup(hsotg); - return; - } - - hsotg->eps[0].dir_in = 1; - hsotg->eps[0].sent_zlp = 1; - - dev_dbg(hsotg->dev, "sending zero-length packet\n"); - - /* issue a zero-sized packet to terminate this */ - writel(S3C_DxEPTSIZ_MC(1) | S3C_DxEPTSIZ_PktCnt(1) | - S3C_DxEPTSIZ_XferSize(0), hsotg->regs + S3C_DIEPTSIZ(0)); - - ctrl = readl(hsotg->regs + S3C_DIEPCTL0); - ctrl |= S3C_DxEPCTL_CNAK; /* clear NAK set by core */ - ctrl |= S3C_DxEPCTL_EPEna; /* ensure ep enabled */ - ctrl |= S3C_DxEPCTL_USBActEp; - writel(ctrl, hsotg->regs + S3C_DIEPCTL0); -} - -/** - * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO - * @hsotg: The device instance - * @epnum: The endpoint received from - * @was_setup: Set if processing a SetupDone event. - * - * The RXFIFO has delivered an OutDone event, which means that the data - * transfer for an OUT endpoint has been completed, either by a short - * packet or by the finish of a transfer. -*/ -static void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, - int epnum, bool was_setup) -{ - u32 epsize = readl(hsotg->regs + S3C_DOEPTSIZ(epnum)); - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; - struct s3c_hsotg_req *hs_req = hs_ep->req; - struct usb_request *req = &hs_req->req; - unsigned size_left = S3C_DxEPTSIZ_XferSize_GET(epsize); - int result = 0; - - if (!hs_req) { - dev_dbg(hsotg->dev, "%s: no request active\n", __func__); - return; - } - - if (using_dma(hsotg)) { - unsigned size_done; - - /* Calculate the size of the transfer by checking how much - * is left in the endpoint size register and then working it - * out from the amount we loaded for the transfer. - * - * We need to do this as DMA pointers are always 32bit aligned - * so may overshoot/undershoot the transfer. - */ - - size_done = hs_ep->size_loaded - size_left; - size_done += hs_ep->last_load; - - req->actual = size_done; - } - - /* if there is more request to do, schedule new transfer */ - if (req->actual < req->length && size_left == 0) { - s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); - return; - } - - if (req->actual < req->length && req->short_not_ok) { - dev_dbg(hsotg->dev, "%s: got %d/%d (short not ok) => error\n", - __func__, req->actual, req->length); - - /* todo - what should we return here? there's no one else - * even bothering to check the status. */ - } - - if (epnum == 0) { - if (!was_setup && req->complete != s3c_hsotg_complete_setup) - s3c_hsotg_send_zlp(hsotg, hs_req); - } - - s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, result); -} - -/** - * s3c_hsotg_read_frameno - read current frame number - * @hsotg: The device instance - * - * Return the current frame number -*/ -static u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg) -{ - u32 dsts; - - dsts = readl(hsotg->regs + S3C_DSTS); - dsts &= S3C_DSTS_SOFFN_MASK; - dsts >>= S3C_DSTS_SOFFN_SHIFT; - - return dsts; -} - -/** - * s3c_hsotg_handle_rx - RX FIFO has data - * @hsotg: The device instance - * - * The IRQ handler has detected that the RX FIFO has some data in it - * that requires processing, so find out what is in there and do the - * appropriate read. - * - * The RXFIFO is a true FIFO, the packets coming out are still in packet - * chunks, so if you have x packets received on an endpoint you'll get x - * FIFO events delivered, each with a packet's worth of data in it. - * - * When using DMA, we should not be processing events from the RXFIFO - * as the actual data should be sent to the memory directly and we turn - * on the completion interrupts to get notifications of transfer completion. - */ -static void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg) -{ - u32 grxstsr = readl(hsotg->regs + S3C_GRXSTSP); - u32 epnum, status, size; - - WARN_ON(using_dma(hsotg)); - - epnum = grxstsr & S3C_GRXSTS_EPNum_MASK; - status = grxstsr & S3C_GRXSTS_PktSts_MASK; - - size = grxstsr & S3C_GRXSTS_ByteCnt_MASK; - size >>= S3C_GRXSTS_ByteCnt_SHIFT; - - if (1) - dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", - __func__, grxstsr, size, epnum); - -#define __status(x) ((x) >> S3C_GRXSTS_PktSts_SHIFT) - - switch (status >> S3C_GRXSTS_PktSts_SHIFT) { - case __status(S3C_GRXSTS_PktSts_GlobalOutNAK): - dev_dbg(hsotg->dev, "GlobalOutNAK\n"); - break; - - case __status(S3C_GRXSTS_PktSts_OutDone): - dev_dbg(hsotg->dev, "OutDone (Frame=0x%08x)\n", - s3c_hsotg_read_frameno(hsotg)); - - if (!using_dma(hsotg)) - s3c_hsotg_handle_outdone(hsotg, epnum, false); - break; - - case __status(S3C_GRXSTS_PktSts_SetupDone): - dev_dbg(hsotg->dev, - "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", - s3c_hsotg_read_frameno(hsotg), - readl(hsotg->regs + S3C_DOEPCTL(0))); - - s3c_hsotg_handle_outdone(hsotg, epnum, true); - break; - - case __status(S3C_GRXSTS_PktSts_OutRX): - s3c_hsotg_rx_data(hsotg, epnum, size); - break; - - case __status(S3C_GRXSTS_PktSts_SetupRX): - dev_dbg(hsotg->dev, - "SetupRX (Frame=0x%08x, DOPEPCTL=0x%08x)\n", - s3c_hsotg_read_frameno(hsotg), - readl(hsotg->regs + S3C_DOEPCTL(0))); - - s3c_hsotg_rx_data(hsotg, epnum, size); - break; - - default: - dev_warn(hsotg->dev, "%s: unknown status %08x\n", - __func__, grxstsr); - - s3c_hsotg_dump(hsotg); - break; - } -} - -/** - * s3c_hsotg_ep0_mps - turn max packet size into register setting - * @mps: The maximum packet size in bytes. -*/ -static u32 s3c_hsotg_ep0_mps(unsigned int mps) -{ - switch (mps) { - case 64: - return S3C_D0EPCTL_MPS_64; - case 32: - return S3C_D0EPCTL_MPS_32; - case 16: - return S3C_D0EPCTL_MPS_16; - case 8: - return S3C_D0EPCTL_MPS_8; - } - - /* bad max packet size, warn and return invalid result */ - WARN_ON(1); - return (u32)-1; -} - -/** - * s3c_hsotg_set_ep_maxpacket - set endpoint's max-packet field - * @hsotg: The driver state. - * @ep: The index number of the endpoint - * @mps: The maximum packet size in bytes - * - * Configure the maximum packet size for the given endpoint, updating - * the hardware control registers to reflect this. - */ -static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, - unsigned int ep, unsigned int mps) -{ - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; - void __iomem *regs = hsotg->regs; - u32 mpsval; - u32 reg; - - if (ep == 0) { - /* EP0 is a special case */ - mpsval = s3c_hsotg_ep0_mps(mps); - if (mpsval > 3) - goto bad_mps; - } else { - if (mps >= S3C_DxEPCTL_MPS_LIMIT+1) - goto bad_mps; - - mpsval = mps; - } - - hs_ep->ep.maxpacket = mps; - - /* update both the in and out endpoint controldir_ registers, even - * if one of the directions may not be in use. */ - - reg = readl(regs + S3C_DIEPCTL(ep)); - reg &= ~S3C_DxEPCTL_MPS_MASK; - reg |= mpsval; - writel(reg, regs + S3C_DIEPCTL(ep)); - - reg = readl(regs + S3C_DOEPCTL(ep)); - reg &= ~S3C_DxEPCTL_MPS_MASK; - reg |= mpsval; - writel(reg, regs + S3C_DOEPCTL(ep)); - - return; - -bad_mps: - dev_err(hsotg->dev, "ep%d: bad mps of %d\n", ep, mps); -} - -/** - * s3c_hsotg_txfifo_flush - flush Tx FIFO - * @hsotg: The driver state - * @idx: The index for the endpoint (0..15) - */ -static void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx) -{ - int timeout; - int val; - - writel(S3C_GRSTCTL_TxFNum(idx) | S3C_GRSTCTL_TxFFlsh, - hsotg->regs + S3C_GRSTCTL); - - /* wait until the fifo is flushed */ - timeout = 100; - - while (1) { - val = readl(hsotg->regs + S3C_GRSTCTL); - - if ((val & (S3C_GRSTCTL_TxFFlsh)) == 0) - break; - - if (--timeout == 0) { - dev_err(hsotg->dev, - "%s: timeout flushing fifo (GRSTCTL=%08x)\n", - __func__, val); - } - - udelay(1); - } -} - -/** - * s3c_hsotg_trytx - check to see if anything needs transmitting - * @hsotg: The driver state - * @hs_ep: The driver endpoint to check. - * - * Check to see if there is a request that has data to send, and if so - * make an attempt to write data into the FIFO. - */ -static int s3c_hsotg_trytx(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep) -{ - struct s3c_hsotg_req *hs_req = hs_ep->req; - - if (!hs_ep->dir_in || !hs_req) - return 0; - - if (hs_req->req.actual < hs_req->req.length) { - dev_dbg(hsotg->dev, "trying to write more for ep%d\n", - hs_ep->index); - return s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); - } - - return 0; -} - -/** - * s3c_hsotg_complete_in - complete IN transfer - * @hsotg: The device state. - * @hs_ep: The endpoint that has just completed. - * - * An IN transfer has been completed, update the transfer's state and then - * call the relevant completion routines. - */ -static void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep) -{ - struct s3c_hsotg_req *hs_req = hs_ep->req; - u32 epsize = readl(hsotg->regs + S3C_DIEPTSIZ(hs_ep->index)); - int size_left, size_done; - - if (!hs_req) { - dev_dbg(hsotg->dev, "XferCompl but no req\n"); - return; - } - - /* Calculate the size of the transfer by checking how much is left - * in the endpoint size register and then working it out from - * the amount we loaded for the transfer. - * - * We do this even for DMA, as the transfer may have incremented - * past the end of the buffer (DMA transfers are always 32bit - * aligned). - */ - - size_left = S3C_DxEPTSIZ_XferSize_GET(epsize); - - size_done = hs_ep->size_loaded - size_left; - size_done += hs_ep->last_load; - - if (hs_req->req.actual != size_done) - dev_dbg(hsotg->dev, "%s: adjusting size done %d => %d\n", - __func__, hs_req->req.actual, size_done); - - hs_req->req.actual = size_done; - - /* if we did all of the transfer, and there is more data left - * around, then try restarting the rest of the request */ - - if (!size_left && hs_req->req.actual < hs_req->req.length) { - dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); - s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); - } else - s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, 0); -} - -/** - * s3c_hsotg_epint - handle an in/out endpoint interrupt - * @hsotg: The driver state - * @idx: The index for the endpoint (0..15) - * @dir_in: Set if this is an IN endpoint - * - * Process and clear any interrupt pending for an individual endpoint -*/ -static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, - int dir_in) -{ - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; - u32 epint_reg = dir_in ? S3C_DIEPINT(idx) : S3C_DOEPINT(idx); - u32 epctl_reg = dir_in ? S3C_DIEPCTL(idx) : S3C_DOEPCTL(idx); - u32 epsiz_reg = dir_in ? S3C_DIEPTSIZ(idx) : S3C_DOEPTSIZ(idx); - u32 ints; - - ints = readl(hsotg->regs + epint_reg); - - /* Clear endpoint interrupts */ - writel(ints, hsotg->regs + epint_reg); - - dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", - __func__, idx, dir_in ? "in" : "out", ints); - - if (ints & S3C_DxEPINT_XferCompl) { - dev_dbg(hsotg->dev, - "%s: XferCompl: DxEPCTL=0x%08x, DxEPTSIZ=%08x\n", - __func__, readl(hsotg->regs + epctl_reg), - readl(hsotg->regs + epsiz_reg)); - - /* we get OutDone from the FIFO, so we only need to look - * at completing IN requests here */ - if (dir_in) { - s3c_hsotg_complete_in(hsotg, hs_ep); - - if (idx == 0 && !hs_ep->req) - s3c_hsotg_enqueue_setup(hsotg); - } else if (using_dma(hsotg)) { - /* We're using DMA, we need to fire an OutDone here - * as we ignore the RXFIFO. */ - - s3c_hsotg_handle_outdone(hsotg, idx, false); - } - } - - if (ints & S3C_DxEPINT_EPDisbld) { - dev_dbg(hsotg->dev, "%s: EPDisbld\n", __func__); - - if (dir_in) { - int epctl = readl(hsotg->regs + epctl_reg); - - s3c_hsotg_txfifo_flush(hsotg, idx); - - if ((epctl & S3C_DxEPCTL_Stall) && - (epctl & S3C_DxEPCTL_EPType_Bulk)) { - int dctl = readl(hsotg->regs + S3C_DCTL); - - dctl |= S3C_DCTL_CGNPInNAK; - writel(dctl, hsotg->regs + S3C_DCTL); - } - } - } - - if (ints & S3C_DxEPINT_AHBErr) - dev_dbg(hsotg->dev, "%s: AHBErr\n", __func__); - - if (ints & S3C_DxEPINT_Setup) { /* Setup or Timeout */ - dev_dbg(hsotg->dev, "%s: Setup/Timeout\n", __func__); - - if (using_dma(hsotg) && idx == 0) { - /* this is the notification we've received a - * setup packet. In non-DMA mode we'd get this - * from the RXFIFO, instead we need to process - * the setup here. */ - - if (dir_in) - WARN_ON_ONCE(1); - else - s3c_hsotg_handle_outdone(hsotg, 0, true); - } - } - - if (ints & S3C_DxEPINT_Back2BackSetup) - dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__); - - if (dir_in) { - /* not sure if this is important, but we'll clear it anyway - */ - if (ints & S3C_DIEPMSK_INTknTXFEmpMsk) { - dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n", - __func__, idx); - } - - /* this probably means something bad is happening */ - if (ints & S3C_DIEPMSK_INTknEPMisMsk) { - dev_warn(hsotg->dev, "%s: ep%d: INTknEP\n", - __func__, idx); - } - - /* FIFO has space or is empty (see GAHBCFG) */ - if (hsotg->dedicated_fifos && - ints & S3C_DIEPMSK_TxFIFOEmpty) { - dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n", - __func__, idx); - s3c_hsotg_trytx(hsotg, hs_ep); - } - } -} - -/** - * s3c_hsotg_irq_enumdone - Handle EnumDone interrupt (enumeration done) - * @hsotg: The device state. - * - * Handle updating the device settings after the enumeration phase has - * been completed. -*/ -static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) -{ - u32 dsts = readl(hsotg->regs + S3C_DSTS); - int ep0_mps = 0, ep_mps; - - /* This should signal the finish of the enumeration phase - * of the USB handshaking, so we should now know what rate - * we connected at. */ - - dev_dbg(hsotg->dev, "EnumDone (DSTS=0x%08x)\n", dsts); - - /* note, since we're limited by the size of transfer on EP0, and - * it seems IN transfers must be a even number of packets we do - * not advertise a 64byte MPS on EP0. */ - - /* catch both EnumSpd_FS and EnumSpd_FS48 */ - switch (dsts & S3C_DSTS_EnumSpd_MASK) { - case S3C_DSTS_EnumSpd_FS: - case S3C_DSTS_EnumSpd_FS48: - hsotg->gadget.speed = USB_SPEED_FULL; - ep0_mps = EP0_MPS_LIMIT; - ep_mps = 64; - break; - - case S3C_DSTS_EnumSpd_HS: - hsotg->gadget.speed = USB_SPEED_HIGH; - ep0_mps = EP0_MPS_LIMIT; - ep_mps = 512; - break; - - case S3C_DSTS_EnumSpd_LS: - hsotg->gadget.speed = USB_SPEED_LOW; - /* note, we don't actually support LS in this driver at the - * moment, and the documentation seems to imply that it isn't - * supported by the PHYs on some of the devices. - */ - break; - } - dev_info(hsotg->dev, "new device is %s\n", - usb_speed_string(hsotg->gadget.speed)); - - /* we should now know the maximum packet size for an - * endpoint, so set the endpoints to a default value. */ - - if (ep0_mps) { - int i; - s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); - for (i = 1; i < S3C_HSOTG_EPS; i++) - s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); - } - - /* ensure after enumeration our EP0 is active */ - - s3c_hsotg_enqueue_setup(hsotg); - - dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", - readl(hsotg->regs + S3C_DIEPCTL0), - readl(hsotg->regs + S3C_DOEPCTL0)); -} - -/** - * kill_all_requests - remove all requests from the endpoint's queue - * @hsotg: The device state. - * @ep: The endpoint the requests may be on. - * @result: The result code to use. - * @force: Force removal of any current requests - * - * Go through the requests on the given endpoint and mark them - * completed with the given result code. - */ -static void kill_all_requests(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *ep, - int result, bool force) -{ - struct s3c_hsotg_req *req, *treq; - unsigned long flags; - - spin_lock_irqsave(&ep->lock, flags); - - list_for_each_entry_safe(req, treq, &ep->queue, queue) { - /* currently, we can't do much about an already - * running request on an in endpoint */ - - if (ep->req == req && ep->dir_in && !force) - continue; - - s3c_hsotg_complete_request(hsotg, ep, req, - result); - } - - spin_unlock_irqrestore(&ep->lock, flags); -} - -#define call_gadget(_hs, _entry) \ - if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \ - (_hs)->driver && (_hs)->driver->_entry) \ - (_hs)->driver->_entry(&(_hs)->gadget); - -/** - * s3c_hsotg_disconnect_irq - disconnect irq service - * @hsotg: The device state. - * - * A disconnect IRQ has been received, meaning that the host has - * lost contact with the bus. Remove all current transactions - * and signal the gadget driver that this has happened. -*/ -static void s3c_hsotg_disconnect_irq(struct s3c_hsotg *hsotg) -{ - unsigned ep; - - for (ep = 0; ep < S3C_HSOTG_EPS; ep++) - kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); - - call_gadget(hsotg, disconnect); -} - -/** - * s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler - * @hsotg: The device state: - * @periodic: True if this is a periodic FIFO interrupt - */ -static void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic) -{ - struct s3c_hsotg_ep *ep; - int epno, ret; - - /* look through for any more data to transmit */ - - for (epno = 0; epno < S3C_HSOTG_EPS; epno++) { - ep = &hsotg->eps[epno]; - - if (!ep->dir_in) - continue; - - if ((periodic && !ep->periodic) || - (!periodic && ep->periodic)) - continue; - - ret = s3c_hsotg_trytx(hsotg, ep); - if (ret < 0) - break; - } -} - -static struct s3c_hsotg *our_hsotg; - -/* IRQ flags which will trigger a retry around the IRQ loop */ -#define IRQ_RETRY_MASK (S3C_GINTSTS_NPTxFEmp | \ - S3C_GINTSTS_PTxFEmp | \ - S3C_GINTSTS_RxFLvl) - -/** - * s3c_hsotg_irq - handle device interrupt - * @irq: The IRQ number triggered - * @pw: The pw value when registered the handler. - */ -static irqreturn_t s3c_hsotg_irq(int irq, void *pw) -{ - struct s3c_hsotg *hsotg = pw; - int retry_count = 8; - u32 gintsts; - u32 gintmsk; - -irq_retry: - gintsts = readl(hsotg->regs + S3C_GINTSTS); - gintmsk = readl(hsotg->regs + S3C_GINTMSK); - - dev_dbg(hsotg->dev, "%s: %08x %08x (%08x) retry %d\n", - __func__, gintsts, gintsts & gintmsk, gintmsk, retry_count); - - gintsts &= gintmsk; - - if (gintsts & S3C_GINTSTS_OTGInt) { - u32 otgint = readl(hsotg->regs + S3C_GOTGINT); - - dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); - - writel(otgint, hsotg->regs + S3C_GOTGINT); - } - - if (gintsts & S3C_GINTSTS_DisconnInt) { - dev_dbg(hsotg->dev, "%s: DisconnInt\n", __func__); - writel(S3C_GINTSTS_DisconnInt, hsotg->regs + S3C_GINTSTS); - - s3c_hsotg_disconnect_irq(hsotg); - } - - if (gintsts & S3C_GINTSTS_SessReqInt) { - dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__); - writel(S3C_GINTSTS_SessReqInt, hsotg->regs + S3C_GINTSTS); - } - - if (gintsts & S3C_GINTSTS_EnumDone) { - writel(S3C_GINTSTS_EnumDone, hsotg->regs + S3C_GINTSTS); - - s3c_hsotg_irq_enumdone(hsotg); - } - - if (gintsts & S3C_GINTSTS_ConIDStsChng) { - dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n", - readl(hsotg->regs + S3C_DSTS), - readl(hsotg->regs + S3C_GOTGCTL)); - - writel(S3C_GINTSTS_ConIDStsChng, hsotg->regs + S3C_GINTSTS); - } - - if (gintsts & (S3C_GINTSTS_OEPInt | S3C_GINTSTS_IEPInt)) { - u32 daint = readl(hsotg->regs + S3C_DAINT); - u32 daint_out = daint >> S3C_DAINT_OutEP_SHIFT; - u32 daint_in = daint & ~(daint_out << S3C_DAINT_OutEP_SHIFT); - int ep; - - dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); - - for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { - if (daint_out & 1) - s3c_hsotg_epint(hsotg, ep, 0); - } - - for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { - if (daint_in & 1) - s3c_hsotg_epint(hsotg, ep, 1); - } - } - - if (gintsts & S3C_GINTSTS_USBRst) { - dev_info(hsotg->dev, "%s: USBRst\n", __func__); - dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", - readl(hsotg->regs + S3C_GNPTXSTS)); - - writel(S3C_GINTSTS_USBRst, hsotg->regs + S3C_GINTSTS); - - kill_all_requests(hsotg, &hsotg->eps[0], -ECONNRESET, true); - - /* it seems after a reset we can end up with a situation - * where the TXFIFO still has data in it... the docs - * suggest resetting all the fifos, so use the init_fifo - * code to relayout and flush the fifos. - */ - - s3c_hsotg_init_fifo(hsotg); - - s3c_hsotg_enqueue_setup(hsotg); - } - - /* check both FIFOs */ - - if (gintsts & S3C_GINTSTS_NPTxFEmp) { - dev_dbg(hsotg->dev, "NPTxFEmp\n"); - - /* Disable the interrupt to stop it happening again - * unless one of these endpoint routines decides that - * it needs re-enabling */ - - s3c_hsotg_disable_gsint(hsotg, S3C_GINTSTS_NPTxFEmp); - s3c_hsotg_irq_fifoempty(hsotg, false); - } - - if (gintsts & S3C_GINTSTS_PTxFEmp) { - dev_dbg(hsotg->dev, "PTxFEmp\n"); - - /* See note in S3C_GINTSTS_NPTxFEmp */ - - s3c_hsotg_disable_gsint(hsotg, S3C_GINTSTS_PTxFEmp); - s3c_hsotg_irq_fifoempty(hsotg, true); - } - - if (gintsts & S3C_GINTSTS_RxFLvl) { - /* note, since GINTSTS_RxFLvl doubles as FIFO-not-empty, - * we need to retry s3c_hsotg_handle_rx if this is still - * set. */ - - s3c_hsotg_handle_rx(hsotg); - } - - if (gintsts & S3C_GINTSTS_ModeMis) { - dev_warn(hsotg->dev, "warning, mode mismatch triggered\n"); - writel(S3C_GINTSTS_ModeMis, hsotg->regs + S3C_GINTSTS); - } - - if (gintsts & S3C_GINTSTS_USBSusp) { - dev_info(hsotg->dev, "S3C_GINTSTS_USBSusp\n"); - writel(S3C_GINTSTS_USBSusp, hsotg->regs + S3C_GINTSTS); - - call_gadget(hsotg, suspend); - } - - if (gintsts & S3C_GINTSTS_WkUpInt) { - dev_info(hsotg->dev, "S3C_GINTSTS_WkUpIn\n"); - writel(S3C_GINTSTS_WkUpInt, hsotg->regs + S3C_GINTSTS); - - call_gadget(hsotg, resume); - } - - if (gintsts & S3C_GINTSTS_ErlySusp) { - dev_dbg(hsotg->dev, "S3C_GINTSTS_ErlySusp\n"); - writel(S3C_GINTSTS_ErlySusp, hsotg->regs + S3C_GINTSTS); - } - - /* these next two seem to crop-up occasionally causing the core - * to shutdown the USB transfer, so try clearing them and logging - * the occurrence. */ - - if (gintsts & S3C_GINTSTS_GOUTNakEff) { - dev_info(hsotg->dev, "GOUTNakEff triggered\n"); - - writel(S3C_DCTL_CGOUTNak, hsotg->regs + S3C_DCTL); - - s3c_hsotg_dump(hsotg); - } - - if (gintsts & S3C_GINTSTS_GINNakEff) { - dev_info(hsotg->dev, "GINNakEff triggered\n"); - - writel(S3C_DCTL_CGNPInNAK, hsotg->regs + S3C_DCTL); - - s3c_hsotg_dump(hsotg); - } - - /* if we've had fifo events, we should try and go around the - * loop again to see if there's any point in returning yet. */ - - if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) - goto irq_retry; - - return IRQ_HANDLED; -} - -/** - * s3c_hsotg_ep_enable - enable the given endpoint - * @ep: The USB endpint to configure - * @desc: The USB endpoint descriptor to configure with. - * - * This is called from the USB gadget code's usb_ep_enable(). -*/ -static int s3c_hsotg_ep_enable(struct usb_ep *ep, - const struct usb_endpoint_descriptor *desc) -{ - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hsotg = hs_ep->parent; - unsigned long flags; - int index = hs_ep->index; - u32 epctrl_reg; - u32 epctrl; - u32 mps; - int dir_in; - int ret = 0; - - dev_dbg(hsotg->dev, - "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", - __func__, ep->name, desc->bEndpointAddress, desc->bmAttributes, - desc->wMaxPacketSize, desc->bInterval); - - /* not to be called for EP0 */ - WARN_ON(index == 0); - - dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; - if (dir_in != hs_ep->dir_in) { - dev_err(hsotg->dev, "%s: direction mismatch!\n", __func__); - return -EINVAL; - } - - mps = usb_endpoint_maxp(desc); - - /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */ - - epctrl_reg = dir_in ? S3C_DIEPCTL(index) : S3C_DOEPCTL(index); - epctrl = readl(hsotg->regs + epctrl_reg); - - dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", - __func__, epctrl, epctrl_reg); - - spin_lock_irqsave(&hs_ep->lock, flags); - - epctrl &= ~(S3C_DxEPCTL_EPType_MASK | S3C_DxEPCTL_MPS_MASK); - epctrl |= S3C_DxEPCTL_MPS(mps); - - /* mark the endpoint as active, otherwise the core may ignore - * transactions entirely for this endpoint */ - epctrl |= S3C_DxEPCTL_USBActEp; - - /* set the NAK status on the endpoint, otherwise we might try and - * do something with data that we've yet got a request to process - * since the RXFIFO will take data for an endpoint even if the - * size register hasn't been set. - */ - - epctrl |= S3C_DxEPCTL_SNAK; - - /* update the endpoint state */ - hs_ep->ep.maxpacket = mps; - - /* default, set to non-periodic */ - hs_ep->periodic = 0; - - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_ISOC: - dev_err(hsotg->dev, "no current ISOC support\n"); - ret = -EINVAL; - goto out; - - case USB_ENDPOINT_XFER_BULK: - epctrl |= S3C_DxEPCTL_EPType_Bulk; - break; - - case USB_ENDPOINT_XFER_INT: - if (dir_in) { - /* Allocate our TxFNum by simply using the index - * of the endpoint for the moment. We could do - * something better if the host indicates how - * many FIFOs we are expecting to use. */ - - hs_ep->periodic = 1; - epctrl |= S3C_DxEPCTL_TxFNum(index); - } - - epctrl |= S3C_DxEPCTL_EPType_Intterupt; - break; - - case USB_ENDPOINT_XFER_CONTROL: - epctrl |= S3C_DxEPCTL_EPType_Control; - break; - } - - /* if the hardware has dedicated fifos, we must give each IN EP - * a unique tx-fifo even if it is non-periodic. - */ - if (dir_in && hsotg->dedicated_fifos) - epctrl |= S3C_DxEPCTL_TxFNum(index); - - /* for non control endpoints, set PID to D0 */ - if (index) - epctrl |= S3C_DxEPCTL_SetD0PID; - - dev_dbg(hsotg->dev, "%s: write DxEPCTL=0x%08x\n", - __func__, epctrl); - - writel(epctrl, hsotg->regs + epctrl_reg); - dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x\n", - __func__, readl(hsotg->regs + epctrl_reg)); - - /* enable the endpoint interrupt */ - s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); - -out: - spin_unlock_irqrestore(&hs_ep->lock, flags); - return ret; -} - -static int s3c_hsotg_ep_disable(struct usb_ep *ep) -{ - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hsotg = hs_ep->parent; - int dir_in = hs_ep->dir_in; - int index = hs_ep->index; - unsigned long flags; - u32 epctrl_reg; - u32 ctrl; - - dev_info(hsotg->dev, "%s(ep %p)\n", __func__, ep); - - if (ep == &hsotg->eps[0].ep) { - dev_err(hsotg->dev, "%s: called for ep0\n", __func__); - return -EINVAL; - } - - epctrl_reg = dir_in ? S3C_DIEPCTL(index) : S3C_DOEPCTL(index); - - /* terminate all requests with shutdown */ - kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); - - spin_lock_irqsave(&hs_ep->lock, flags); - - ctrl = readl(hsotg->regs + epctrl_reg); - ctrl &= ~S3C_DxEPCTL_EPEna; - ctrl &= ~S3C_DxEPCTL_USBActEp; - ctrl |= S3C_DxEPCTL_SNAK; - - dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); - writel(ctrl, hsotg->regs + epctrl_reg); - - /* disable endpoint interrupts */ - s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); - - spin_unlock_irqrestore(&hs_ep->lock, flags); - return 0; -} - -/** - * on_list - check request is on the given endpoint - * @ep: The endpoint to check. - * @test: The request to test if it is on the endpoint. -*/ -static bool on_list(struct s3c_hsotg_ep *ep, struct s3c_hsotg_req *test) -{ - struct s3c_hsotg_req *req, *treq; - - list_for_each_entry_safe(req, treq, &ep->queue, queue) { - if (req == test) - return true; - } - - return false; -} - -static int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) -{ - struct s3c_hsotg_req *hs_req = our_req(req); - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hs = hs_ep->parent; - unsigned long flags; - - dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); - - spin_lock_irqsave(&hs_ep->lock, flags); - - if (!on_list(hs_ep, hs_req)) { - spin_unlock_irqrestore(&hs_ep->lock, flags); - return -EINVAL; - } - - s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); - spin_unlock_irqrestore(&hs_ep->lock, flags); - - return 0; -} - -static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) -{ - struct s3c_hsotg_ep *hs_ep = our_ep(ep); - struct s3c_hsotg *hs = hs_ep->parent; - int index = hs_ep->index; - unsigned long irqflags; - u32 epreg; - u32 epctl; - u32 xfertype; - - dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); - - spin_lock_irqsave(&hs_ep->lock, irqflags); - - /* write both IN and OUT control registers */ - - epreg = S3C_DIEPCTL(index); - epctl = readl(hs->regs + epreg); - - if (value) { - epctl |= S3C_DxEPCTL_Stall + S3C_DxEPCTL_SNAK; - if (epctl & S3C_DxEPCTL_EPEna) - epctl |= S3C_DxEPCTL_EPDis; - } else { - epctl &= ~S3C_DxEPCTL_Stall; - xfertype = epctl & S3C_DxEPCTL_EPType_MASK; - if (xfertype == S3C_DxEPCTL_EPType_Bulk || - xfertype == S3C_DxEPCTL_EPType_Intterupt) - epctl |= S3C_DxEPCTL_SetD0PID; - } - - writel(epctl, hs->regs + epreg); - - epreg = S3C_DOEPCTL(index); - epctl = readl(hs->regs + epreg); - - if (value) - epctl |= S3C_DxEPCTL_Stall; - else { - epctl &= ~S3C_DxEPCTL_Stall; - xfertype = epctl & S3C_DxEPCTL_EPType_MASK; - if (xfertype == S3C_DxEPCTL_EPType_Bulk || - xfertype == S3C_DxEPCTL_EPType_Intterupt) - epctl |= S3C_DxEPCTL_SetD0PID; - } - - writel(epctl, hs->regs + epreg); - - spin_unlock_irqrestore(&hs_ep->lock, irqflags); - - return 0; -} - -static struct usb_ep_ops s3c_hsotg_ep_ops = { - .enable = s3c_hsotg_ep_enable, - .disable = s3c_hsotg_ep_disable, - .alloc_request = s3c_hsotg_ep_alloc_request, - .free_request = s3c_hsotg_ep_free_request, - .queue = s3c_hsotg_ep_queue, - .dequeue = s3c_hsotg_ep_dequeue, - .set_halt = s3c_hsotg_ep_sethalt, - /* note, don't believe we have any call for the fifo routines */ -}; - -/** - * s3c_hsotg_corereset - issue softreset to the core - * @hsotg: The device state - * - * Issue a soft reset to the core, and await the core finishing it. -*/ -static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg) -{ - int timeout; - u32 grstctl; - - dev_dbg(hsotg->dev, "resetting core\n"); - - /* issue soft reset */ - writel(S3C_GRSTCTL_CSftRst, hsotg->regs + S3C_GRSTCTL); - - timeout = 1000; - do { - grstctl = readl(hsotg->regs + S3C_GRSTCTL); - } while ((grstctl & S3C_GRSTCTL_CSftRst) && timeout-- > 0); - - if (grstctl & S3C_GRSTCTL_CSftRst) { - dev_err(hsotg->dev, "Failed to get CSftRst asserted\n"); - return -EINVAL; - } - - timeout = 1000; - - while (1) { - u32 grstctl = readl(hsotg->regs + S3C_GRSTCTL); - - if (timeout-- < 0) { - dev_info(hsotg->dev, - "%s: reset failed, GRSTCTL=%08x\n", - __func__, grstctl); - return -ETIMEDOUT; - } - - if (!(grstctl & S3C_GRSTCTL_AHBIdle)) - continue; - - break; /* reset done */ - } - - dev_dbg(hsotg->dev, "reset successful\n"); - return 0; -} - -static int s3c_hsotg_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) -{ - struct s3c_hsotg *hsotg = our_hsotg; - int ret; - - if (!hsotg) { - printk(KERN_ERR "%s: called with no device\n", __func__); - return -ENODEV; - } - - if (!driver) { - dev_err(hsotg->dev, "%s: no driver\n", __func__); - return -EINVAL; - } - - if (driver->max_speed < USB_SPEED_FULL) - dev_err(hsotg->dev, "%s: bad speed\n", __func__); - - if (!bind || !driver->setup) { - dev_err(hsotg->dev, "%s: missing entry points\n", __func__); - return -EINVAL; - } - - WARN_ON(hsotg->driver); - - driver->driver.bus = NULL; - hsotg->driver = driver; - hsotg->gadget.dev.driver = &driver->driver; - hsotg->gadget.dev.dma_mask = hsotg->dev->dma_mask; - hsotg->gadget.speed = USB_SPEED_UNKNOWN; - - ret = device_add(&hsotg->gadget.dev); - if (ret) { - dev_err(hsotg->dev, "failed to register gadget device\n"); - goto err; - } - - ret = bind(&hsotg->gadget); - if (ret) { - dev_err(hsotg->dev, "failed bind %s\n", driver->driver.name); - - hsotg->gadget.dev.driver = NULL; - hsotg->driver = NULL; - goto err; - } - - /* we must now enable ep0 ready for host detection and then - * set configuration. */ - - s3c_hsotg_corereset(hsotg); - - /* set the PLL on, remove the HNP/SRP and set the PHY */ - writel(S3C_GUSBCFG_PHYIf16 | S3C_GUSBCFG_TOutCal(7) | - (0x5 << 10), hsotg->regs + S3C_GUSBCFG); - - /* looks like soft-reset changes state of FIFOs */ - s3c_hsotg_init_fifo(hsotg); - - __orr32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon); - - writel(1 << 18 | S3C_DCFG_DevSpd_HS, hsotg->regs + S3C_DCFG); - - /* Clear any pending OTG interrupts */ - writel(0xffffffff, hsotg->regs + S3C_GOTGINT); - - /* Clear any pending interrupts */ - writel(0xffffffff, hsotg->regs + S3C_GINTSTS); - - writel(S3C_GINTSTS_DisconnInt | S3C_GINTSTS_SessReqInt | - S3C_GINTSTS_ConIDStsChng | S3C_GINTSTS_USBRst | - S3C_GINTSTS_EnumDone | S3C_GINTSTS_OTGInt | - S3C_GINTSTS_USBSusp | S3C_GINTSTS_WkUpInt | - S3C_GINTSTS_GOUTNakEff | S3C_GINTSTS_GINNakEff | - S3C_GINTSTS_ErlySusp, - hsotg->regs + S3C_GINTMSK); - - if (using_dma(hsotg)) - writel(S3C_GAHBCFG_GlblIntrEn | S3C_GAHBCFG_DMAEn | - S3C_GAHBCFG_HBstLen_Incr4, - hsotg->regs + S3C_GAHBCFG); - else - writel(S3C_GAHBCFG_GlblIntrEn, hsotg->regs + S3C_GAHBCFG); - - /* Enabling INTknTXFEmpMsk here seems to be a big mistake, we end - * up being flooded with interrupts if the host is polling the - * endpoint to try and read data. */ - - writel(S3C_DIEPMSK_TimeOUTMsk | S3C_DIEPMSK_AHBErrMsk | - S3C_DIEPMSK_INTknEPMisMsk | - S3C_DIEPMSK_EPDisbldMsk | S3C_DIEPMSK_XferComplMsk | - ((hsotg->dedicated_fifos) ? S3C_DIEPMSK_TxFIFOEmpty : 0), - hsotg->regs + S3C_DIEPMSK); - - /* don't need XferCompl, we get that from RXFIFO in slave mode. In - * DMA mode we may need this. */ - writel(S3C_DOEPMSK_SetupMsk | S3C_DOEPMSK_AHBErrMsk | - S3C_DOEPMSK_EPDisbldMsk | - (using_dma(hsotg) ? (S3C_DIEPMSK_XferComplMsk | - S3C_DIEPMSK_TimeOUTMsk) : 0), - hsotg->regs + S3C_DOEPMSK); - - writel(0, hsotg->regs + S3C_DAINTMSK); - - dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", - readl(hsotg->regs + S3C_DIEPCTL0), - readl(hsotg->regs + S3C_DOEPCTL0)); - - /* enable in and out endpoint interrupts */ - s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_OEPInt | S3C_GINTSTS_IEPInt); - - /* Enable the RXFIFO when in slave mode, as this is how we collect - * the data. In DMA mode, we get events from the FIFO but also - * things we cannot process, so do not use it. */ - if (!using_dma(hsotg)) - s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_RxFLvl); - - /* Enable interrupts for EP0 in and out */ - s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); - s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); - - __orr32(hsotg->regs + S3C_DCTL, S3C_DCTL_PWROnPrgDone); - udelay(10); /* see openiboot */ - __bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_PWROnPrgDone); - - dev_dbg(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + S3C_DCTL)); - - /* S3C_DxEPCTL_USBActEp says RO in manual, but seems to be set by - writing to the EPCTL register.. */ - - /* set to read 1 8byte packet */ - writel(S3C_DxEPTSIZ_MC(1) | S3C_DxEPTSIZ_PktCnt(1) | - S3C_DxEPTSIZ_XferSize(8), hsotg->regs + DOEPTSIZ0); - - writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | - S3C_DxEPCTL_CNAK | S3C_DxEPCTL_EPEna | - S3C_DxEPCTL_USBActEp, - hsotg->regs + S3C_DOEPCTL0); - - /* enable, but don't activate EP0in */ - writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | - S3C_DxEPCTL_USBActEp, hsotg->regs + S3C_DIEPCTL0); - - s3c_hsotg_enqueue_setup(hsotg); - - dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", - readl(hsotg->regs + S3C_DIEPCTL0), - readl(hsotg->regs + S3C_DOEPCTL0)); - - /* clear global NAKs */ - writel(S3C_DCTL_CGOUTNak | S3C_DCTL_CGNPInNAK, - hsotg->regs + S3C_DCTL); - - /* must be at-least 3ms to allow bus to see disconnect */ - msleep(3); - - /* remove the soft-disconnect and let's go */ - __bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon); - - /* report to the user, and return */ - - dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); - return 0; - -err: - hsotg->driver = NULL; - hsotg->gadget.dev.driver = NULL; - return ret; -} - -static int s3c_hsotg_stop(struct usb_gadget_driver *driver) -{ - struct s3c_hsotg *hsotg = our_hsotg; - int ep; - - if (!hsotg) - return -ENODEV; - - if (!driver || driver != hsotg->driver || !driver->unbind) - return -EINVAL; - - /* all endpoints should be shutdown */ - for (ep = 0; ep < S3C_HSOTG_EPS; ep++) - s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); - - call_gadget(hsotg, disconnect); - - driver->unbind(&hsotg->gadget); - hsotg->driver = NULL; - hsotg->gadget.speed = USB_SPEED_UNKNOWN; - - device_del(&hsotg->gadget.dev); - - dev_info(hsotg->dev, "unregistered gadget driver '%s'\n", - driver->driver.name); - - return 0; -} - -static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) -{ - return s3c_hsotg_read_frameno(to_hsotg(gadget)); -} - -static struct usb_gadget_ops s3c_hsotg_gadget_ops = { - .get_frame = s3c_hsotg_gadget_getframe, - .start = s3c_hsotg_start, - .stop = s3c_hsotg_stop, -}; - -/** - * s3c_hsotg_initep - initialise a single endpoint - * @hsotg: The device state. - * @hs_ep: The endpoint to be initialised. - * @epnum: The endpoint number - * - * Initialise the given endpoint (as part of the probe and device state - * creation) to give to the gadget driver. Setup the endpoint name, any - * direction information and other state that may be required. - */ -static void __devinit s3c_hsotg_initep(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - int epnum) -{ - u32 ptxfifo; - char *dir; - - if (epnum == 0) - dir = ""; - else if ((epnum % 2) == 0) { - dir = "out"; - } else { - dir = "in"; - hs_ep->dir_in = 1; - } - - hs_ep->index = epnum; - - snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); - - INIT_LIST_HEAD(&hs_ep->queue); - INIT_LIST_HEAD(&hs_ep->ep.ep_list); - - spin_lock_init(&hs_ep->lock); - - /* add to the list of endpoints known by the gadget driver */ - if (epnum) - list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); - - hs_ep->parent = hsotg; - hs_ep->ep.name = hs_ep->name; - hs_ep->ep.maxpacket = epnum ? 512 : EP0_MPS_LIMIT; - hs_ep->ep.ops = &s3c_hsotg_ep_ops; - - /* Read the FIFO size for the Periodic TX FIFO, even if we're - * an OUT endpoint, we may as well do this if in future the - * code is changed to make each endpoint's direction changeable. - */ - - ptxfifo = readl(hsotg->regs + S3C_DPTXFSIZn(epnum)); - hs_ep->fifo_size = S3C_DPTXFSIZn_DPTxFSize_GET(ptxfifo) * 4; - - /* if we're using dma, we need to set the next-endpoint pointer - * to be something valid. - */ - - if (using_dma(hsotg)) { - u32 next = S3C_DxEPCTL_NextEp((epnum + 1) % 15); - writel(next, hsotg->regs + S3C_DIEPCTL(epnum)); - writel(next, hsotg->regs + S3C_DOEPCTL(epnum)); - } -} - -/** - * s3c_hsotg_otgreset - reset the OtG phy block - * @hsotg: The host state. - * - * Power up the phy, set the basic configuration and start the PHY. - */ -static void s3c_hsotg_otgreset(struct s3c_hsotg *hsotg) -{ - struct clk *xusbxti; - u32 pwr, osc; - - pwr = readl(S3C_PHYPWR); - pwr &= ~0x19; - writel(pwr, S3C_PHYPWR); - mdelay(1); - - osc = hsotg->plat->is_osc ? S3C_PHYCLK_EXT_OSC : 0; - - xusbxti = clk_get(hsotg->dev, "xusbxti"); - if (xusbxti && !IS_ERR(xusbxti)) { - switch (clk_get_rate(xusbxti)) { - case 12*MHZ: - osc |= S3C_PHYCLK_CLKSEL_12M; - break; - case 24*MHZ: - osc |= S3C_PHYCLK_CLKSEL_24M; - break; - default: - case 48*MHZ: - /* default reference clock */ - break; - } - clk_put(xusbxti); - } - - writel(osc | 0x10, S3C_PHYCLK); - - /* issue a full set of resets to the otg and core */ - - writel(S3C_RSTCON_PHY, S3C_RSTCON); - udelay(20); /* at-least 10uS */ - writel(0, S3C_RSTCON); -} - - -static void s3c_hsotg_init(struct s3c_hsotg *hsotg) -{ - u32 cfg4; - - /* unmask subset of endpoint interrupts */ - - writel(S3C_DIEPMSK_TimeOUTMsk | S3C_DIEPMSK_AHBErrMsk | - S3C_DIEPMSK_EPDisbldMsk | S3C_DIEPMSK_XferComplMsk, - hsotg->regs + S3C_DIEPMSK); - - writel(S3C_DOEPMSK_SetupMsk | S3C_DOEPMSK_AHBErrMsk | - S3C_DOEPMSK_EPDisbldMsk | S3C_DOEPMSK_XferComplMsk, - hsotg->regs + S3C_DOEPMSK); - - writel(0, hsotg->regs + S3C_DAINTMSK); - - /* Be in disconnected state until gadget is registered */ - __orr32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon); - - if (0) { - /* post global nak until we're ready */ - writel(S3C_DCTL_SGNPInNAK | S3C_DCTL_SGOUTNak, - hsotg->regs + S3C_DCTL); - } - - /* setup fifos */ - - dev_dbg(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", - readl(hsotg->regs + S3C_GRXFSIZ), - readl(hsotg->regs + S3C_GNPTXFSIZ)); - - s3c_hsotg_init_fifo(hsotg); - - /* set the PLL on, remove the HNP/SRP and set the PHY */ - writel(S3C_GUSBCFG_PHYIf16 | S3C_GUSBCFG_TOutCal(7) | (0x5 << 10), - hsotg->regs + S3C_GUSBCFG); - - writel(using_dma(hsotg) ? S3C_GAHBCFG_DMAEn : 0x0, - hsotg->regs + S3C_GAHBCFG); - - /* check hardware configuration */ - - cfg4 = readl(hsotg->regs + 0x50); - hsotg->dedicated_fifos = (cfg4 >> 25) & 1; - - dev_info(hsotg->dev, "%s fifos\n", - hsotg->dedicated_fifos ? "dedicated" : "shared"); -} - -static void s3c_hsotg_dump(struct s3c_hsotg *hsotg) -{ -#ifdef DEBUG - struct device *dev = hsotg->dev; - void __iomem *regs = hsotg->regs; - u32 val; - int idx; - - dev_info(dev, "DCFG=0x%08x, DCTL=0x%08x, DIEPMSK=%08x\n", - readl(regs + S3C_DCFG), readl(regs + S3C_DCTL), - readl(regs + S3C_DIEPMSK)); - - dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", - readl(regs + S3C_GAHBCFG), readl(regs + 0x44)); - - dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", - readl(regs + S3C_GRXFSIZ), readl(regs + S3C_GNPTXFSIZ)); - - /* show periodic fifo settings */ - - for (idx = 1; idx <= 15; idx++) { - val = readl(regs + S3C_DPTXFSIZn(idx)); - dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, - val >> S3C_DPTXFSIZn_DPTxFSize_SHIFT, - val & S3C_DPTXFSIZn_DPTxFStAddr_MASK); - } - - for (idx = 0; idx < 15; idx++) { - dev_info(dev, - "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, - readl(regs + S3C_DIEPCTL(idx)), - readl(regs + S3C_DIEPTSIZ(idx)), - readl(regs + S3C_DIEPDMA(idx))); - - val = readl(regs + S3C_DOEPCTL(idx)); - dev_info(dev, - "ep%d-out: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", - idx, readl(regs + S3C_DOEPCTL(idx)), - readl(regs + S3C_DOEPTSIZ(idx)), - readl(regs + S3C_DOEPDMA(idx))); - - } - - dev_info(dev, "DVBUSDIS=0x%08x, DVBUSPULSE=%08x\n", - readl(regs + S3C_DVBUSDIS), readl(regs + S3C_DVBUSPULSE)); -#endif -} - - -/** - * state_show - debugfs: show overall driver and device state. - * @seq: The seq file to write to. - * @v: Unused parameter. - * - * This debugfs entry shows the overall state of the hardware and - * some general information about each of the endpoints available - * to the system. - */ -static int state_show(struct seq_file *seq, void *v) -{ - struct s3c_hsotg *hsotg = seq->private; - void __iomem *regs = hsotg->regs; - int idx; - - seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", - readl(regs + S3C_DCFG), - readl(regs + S3C_DCTL), - readl(regs + S3C_DSTS)); - - seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", - readl(regs + S3C_DIEPMSK), readl(regs + S3C_DOEPMSK)); - - seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", - readl(regs + S3C_GINTMSK), - readl(regs + S3C_GINTSTS)); - - seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", - readl(regs + S3C_DAINTMSK), - readl(regs + S3C_DAINT)); - - seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", - readl(regs + S3C_GNPTXSTS), - readl(regs + S3C_GRXSTSR)); - - seq_printf(seq, "\nEndpoint status:\n"); - - for (idx = 0; idx < 15; idx++) { - u32 in, out; - - in = readl(regs + S3C_DIEPCTL(idx)); - out = readl(regs + S3C_DOEPCTL(idx)); - - seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", - idx, in, out); - - in = readl(regs + S3C_DIEPTSIZ(idx)); - out = readl(regs + S3C_DOEPTSIZ(idx)); - - seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", - in, out); - - seq_printf(seq, "\n"); - } - - return 0; -} - -static int state_open(struct inode *inode, struct file *file) -{ - return single_open(file, state_show, inode->i_private); -} - -static const struct file_operations state_fops = { - .owner = THIS_MODULE, - .open = state_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/** - * fifo_show - debugfs: show the fifo information - * @seq: The seq_file to write data to. - * @v: Unused parameter. - * - * Show the FIFO information for the overall fifo and all the - * periodic transmission FIFOs. -*/ -static int fifo_show(struct seq_file *seq, void *v) -{ - struct s3c_hsotg *hsotg = seq->private; - void __iomem *regs = hsotg->regs; - u32 val; - int idx; - - seq_printf(seq, "Non-periodic FIFOs:\n"); - seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + S3C_GRXFSIZ)); - - val = readl(regs + S3C_GNPTXFSIZ); - seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", - val >> S3C_GNPTXFSIZ_NPTxFDep_SHIFT, - val & S3C_GNPTXFSIZ_NPTxFStAddr_MASK); - - seq_printf(seq, "\nPeriodic TXFIFOs:\n"); - - for (idx = 1; idx <= 15; idx++) { - val = readl(regs + S3C_DPTXFSIZn(idx)); - - seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, - val >> S3C_DPTXFSIZn_DPTxFSize_SHIFT, - val & S3C_DPTXFSIZn_DPTxFStAddr_MASK); - } - - return 0; -} - -static int fifo_open(struct inode *inode, struct file *file) -{ - return single_open(file, fifo_show, inode->i_private); -} - -static const struct file_operations fifo_fops = { - .owner = THIS_MODULE, - .open = fifo_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - - -static const char *decode_direction(int is_in) -{ - return is_in ? "in" : "out"; -} - -/** - * ep_show - debugfs: show the state of an endpoint. - * @seq: The seq_file to write data to. - * @v: Unused parameter. - * - * This debugfs entry shows the state of the given endpoint (one is - * registered for each available). -*/ -static int ep_show(struct seq_file *seq, void *v) -{ - struct s3c_hsotg_ep *ep = seq->private; - struct s3c_hsotg *hsotg = ep->parent; - struct s3c_hsotg_req *req; - void __iomem *regs = hsotg->regs; - int index = ep->index; - int show_limit = 15; - unsigned long flags; - - seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", - ep->index, ep->ep.name, decode_direction(ep->dir_in)); - - /* first show the register state */ - - seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", - readl(regs + S3C_DIEPCTL(index)), - readl(regs + S3C_DOEPCTL(index))); - - seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", - readl(regs + S3C_DIEPDMA(index)), - readl(regs + S3C_DOEPDMA(index))); - - seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", - readl(regs + S3C_DIEPINT(index)), - readl(regs + S3C_DOEPINT(index))); - - seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", - readl(regs + S3C_DIEPTSIZ(index)), - readl(regs + S3C_DOEPTSIZ(index))); - - seq_printf(seq, "\n"); - seq_printf(seq, "mps %d\n", ep->ep.maxpacket); - seq_printf(seq, "total_data=%ld\n", ep->total_data); - - seq_printf(seq, "request list (%p,%p):\n", - ep->queue.next, ep->queue.prev); - - spin_lock_irqsave(&ep->lock, flags); - - list_for_each_entry(req, &ep->queue, queue) { - if (--show_limit < 0) { - seq_printf(seq, "not showing more requests...\n"); - break; - } - - seq_printf(seq, "%c req %p: %d bytes @%p, ", - req == ep->req ? '*' : ' ', - req, req->req.length, req->req.buf); - seq_printf(seq, "%d done, res %d\n", - req->req.actual, req->req.status); - } - - spin_unlock_irqrestore(&ep->lock, flags); - - return 0; -} - -static int ep_open(struct inode *inode, struct file *file) -{ - return single_open(file, ep_show, inode->i_private); -} - -static const struct file_operations ep_fops = { - .owner = THIS_MODULE, - .open = ep_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/** - * s3c_hsotg_create_debug - create debugfs directory and files - * @hsotg: The driver state - * - * Create the debugfs files to allow the user to get information - * about the state of the system. The directory name is created - * with the same name as the device itself, in case we end up - * with multiple blocks in future systems. -*/ -static void __devinit s3c_hsotg_create_debug(struct s3c_hsotg *hsotg) -{ - struct dentry *root; - unsigned epidx; - - root = debugfs_create_dir(dev_name(hsotg->dev), NULL); - hsotg->debug_root = root; - if (IS_ERR(root)) { - dev_err(hsotg->dev, "cannot create debug root\n"); - return; - } - - /* create general state file */ - - hsotg->debug_file = debugfs_create_file("state", 0444, root, - hsotg, &state_fops); - - if (IS_ERR(hsotg->debug_file)) - dev_err(hsotg->dev, "%s: failed to create state\n", __func__); - - hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, - hsotg, &fifo_fops); - - if (IS_ERR(hsotg->debug_fifo)) - dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); - - /* create one file for each endpoint */ - - for (epidx = 0; epidx < S3C_HSOTG_EPS; epidx++) { - struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; - - ep->debugfs = debugfs_create_file(ep->name, 0444, - root, ep, &ep_fops); - - if (IS_ERR(ep->debugfs)) - dev_err(hsotg->dev, "failed to create %s debug file\n", - ep->name); - } -} - -/** - * s3c_hsotg_delete_debug - cleanup debugfs entries - * @hsotg: The driver state - * - * Cleanup (remove) the debugfs files for use on module exit. -*/ -static void __devexit s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) -{ - unsigned epidx; - - for (epidx = 0; epidx < S3C_HSOTG_EPS; epidx++) { - struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; - debugfs_remove(ep->debugfs); - } - - debugfs_remove(hsotg->debug_file); - debugfs_remove(hsotg->debug_fifo); - debugfs_remove(hsotg->debug_root); -} - -/** - * s3c_hsotg_gate - set the hardware gate for the block - * @pdev: The device we bound to - * @on: On or off. - * - * Set the hardware gate setting into the block. If we end up on - * something other than an S3C64XX, then we might need to change this - * to using a platform data callback, or some other mechanism. - */ -static void s3c_hsotg_gate(struct platform_device *pdev, bool on) -{ - unsigned long flags; - u32 others; - - local_irq_save(flags); - - others = __raw_readl(S3C64XX_OTHERS); - if (on) - others |= S3C64XX_OTHERS_USBMASK; - else - others &= ~S3C64XX_OTHERS_USBMASK; - __raw_writel(others, S3C64XX_OTHERS); - - local_irq_restore(flags); -} - -static struct s3c_hsotg_plat s3c_hsotg_default_pdata; - -static int __devinit s3c_hsotg_probe(struct platform_device *pdev) -{ - struct s3c_hsotg_plat *plat = pdev->dev.platform_data; - struct device *dev = &pdev->dev; - struct s3c_hsotg *hsotg; - struct resource *res; - int epnum; - int ret; - - if (!plat) - plat = &s3c_hsotg_default_pdata; - - hsotg = kzalloc(sizeof(struct s3c_hsotg) + - sizeof(struct s3c_hsotg_ep) * S3C_HSOTG_EPS, - GFP_KERNEL); - if (!hsotg) { - dev_err(dev, "cannot get memory\n"); - return -ENOMEM; - } - - hsotg->dev = dev; - hsotg->plat = plat; - - hsotg->clk = clk_get(&pdev->dev, "otg"); - if (IS_ERR(hsotg->clk)) { - dev_err(dev, "cannot get otg clock\n"); - ret = PTR_ERR(hsotg->clk); - goto err_mem; - } - - platform_set_drvdata(pdev, hsotg); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "cannot find register resource 0\n"); - ret = -EINVAL; - goto err_clk; - } - - hsotg->regs_res = request_mem_region(res->start, resource_size(res), - dev_name(dev)); - if (!hsotg->regs_res) { - dev_err(dev, "cannot reserve registers\n"); - ret = -ENOENT; - goto err_clk; - } - - hsotg->regs = ioremap(res->start, resource_size(res)); - if (!hsotg->regs) { - dev_err(dev, "cannot map registers\n"); - ret = -ENXIO; - goto err_regs_res; - } - - ret = platform_get_irq(pdev, 0); - if (ret < 0) { - dev_err(dev, "cannot find IRQ\n"); - goto err_regs; - } - - hsotg->irq = ret; - - ret = request_irq(ret, s3c_hsotg_irq, 0, dev_name(dev), hsotg); - if (ret < 0) { - dev_err(dev, "cannot claim IRQ\n"); - goto err_regs; - } - - dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); - - device_initialize(&hsotg->gadget.dev); - - dev_set_name(&hsotg->gadget.dev, "gadget"); - - hsotg->gadget.max_speed = USB_SPEED_HIGH; - hsotg->gadget.ops = &s3c_hsotg_gadget_ops; - hsotg->gadget.name = dev_name(dev); - - hsotg->gadget.dev.parent = dev; - hsotg->gadget.dev.dma_mask = dev->dma_mask; - - /* setup endpoint information */ - - INIT_LIST_HEAD(&hsotg->gadget.ep_list); - hsotg->gadget.ep0 = &hsotg->eps[0].ep; - - /* allocate EP0 request */ - - hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, - GFP_KERNEL); - if (!hsotg->ctrl_req) { - dev_err(dev, "failed to allocate ctrl req\n"); - goto err_regs; - } - - /* reset the system */ - - clk_enable(hsotg->clk); - - s3c_hsotg_gate(pdev, true); - - s3c_hsotg_otgreset(hsotg); - s3c_hsotg_corereset(hsotg); - s3c_hsotg_init(hsotg); - - /* initialise the endpoints now the core has been initialised */ - for (epnum = 0; epnum < S3C_HSOTG_EPS; epnum++) - s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); - - ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget); - if (ret) - goto err_add_udc; - - s3c_hsotg_create_debug(hsotg); - - s3c_hsotg_dump(hsotg); - - our_hsotg = hsotg; - return 0; - -err_add_udc: - s3c_hsotg_gate(pdev, false); - clk_disable(hsotg->clk); - clk_put(hsotg->clk); - -err_regs: - iounmap(hsotg->regs); - -err_regs_res: - release_resource(hsotg->regs_res); - kfree(hsotg->regs_res); -err_clk: - clk_put(hsotg->clk); -err_mem: - kfree(hsotg); - return ret; -} - -static int __devexit s3c_hsotg_remove(struct platform_device *pdev) -{ - struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); - - usb_del_gadget_udc(&hsotg->gadget); - - s3c_hsotg_delete_debug(hsotg); - - usb_gadget_unregister_driver(hsotg->driver); - - free_irq(hsotg->irq, hsotg); - iounmap(hsotg->regs); - - release_resource(hsotg->regs_res); - kfree(hsotg->regs_res); - - s3c_hsotg_gate(pdev, false); - - clk_disable(hsotg->clk); - clk_put(hsotg->clk); - - kfree(hsotg); - return 0; -} - -#if 1 -#define s3c_hsotg_suspend NULL -#define s3c_hsotg_resume NULL -#endif - -static struct platform_driver s3c_hsotg_driver = { - .driver = { - .name = "s3c-hsotg", - .owner = THIS_MODULE, - }, - .probe = s3c_hsotg_probe, - .remove = __devexit_p(s3c_hsotg_remove), - .suspend = s3c_hsotg_suspend, - .resume = s3c_hsotg_resume, -}; - -module_platform_driver(s3c_hsotg_driver); - -MODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device"); -MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:s3c-hsotg"); diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index df8661d266c..10c6a128250 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -24,12 +24,14 @@ #include <linux/io.h> #include <linux/slab.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/otg.h> #include <linux/prefetch.h> #include <linux/platform_data/s3c-hsudc.h> #include <linux/regulator/consumer.h> +#include <linux/pm_runtime.h> #include <mach/regs-s3c2443-clock.h> @@ -109,7 +111,6 @@ struct s3c_hsudc_ep { struct usb_ep ep; char name[20]; struct s3c_hsudc *dev; - const struct usb_endpoint_descriptor *desc; struct list_head queue; u8 stopped; u8 wedge; @@ -134,7 +135,6 @@ struct s3c_hsudc_req { * @dev: The device reference used by probe function. * @lock: Lock to synchronize the usage of Endpoints (EP's are indexed). * @regs: Remapped base address of controller's register space. - * @mem_rsrc: Device memory resource used for remapping device register space. * irq: IRQ number used by the controller. * uclk: Reference to the controller clock. * ep0state: Current state of EP0. @@ -145,11 +145,10 @@ struct s3c_hsudc { struct usb_gadget_driver *driver; struct device *dev; struct s3c24xx_hsudc_platdata *pd; - struct otg_transceiver *transceiver; + struct usb_phy *transceiver; struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsudc_supply_names)]; spinlock_t lock; void __iomem *regs; - struct resource *mem_rsrc; int irq; struct clk *uclk; int ep0state; @@ -284,7 +283,6 @@ static void s3c_hsudc_nuke_ep(struct s3c_hsudc_ep *hsep, int status) /** * s3c_hsudc_stop_activity - Stop activity on all endpoints. * @hsudc: Device controller for which EP activity is to be stopped. - * @driver: Reference to the gadget driver which is currently active. * * All the endpoints are stopped and any pending transfer requests if any on * the endpoint are terminated. @@ -436,7 +434,7 @@ static void s3c_hsudc_epin_intr(struct s3c_hsudc *hsudc, u32 ep_idx) struct s3c_hsudc_req *hsreq; u32 csr; - csr = readl((u32)hsudc->regs + S3C_ESR); + csr = readl(hsudc->regs + S3C_ESR); if (csr & S3C_ESR_STALL) { writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR); return; @@ -469,7 +467,7 @@ static void s3c_hsudc_epout_intr(struct s3c_hsudc *hsudc, u32 ep_idx) struct s3c_hsudc_req *hsreq; u32 csr; - csr = readl((u32)hsudc->regs + S3C_ESR); + csr = readl(hsudc->regs + S3C_ESR); if (csr & S3C_ESR_STALL) { writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR); return; @@ -759,8 +757,8 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep, unsigned long flags; u32 ecr = 0; - hsep = container_of(_ep, struct s3c_hsudc_ep, ep); - if (!_ep || !desc || hsep->desc || _ep->name == ep0name + hsep = our_ep(_ep); + if (!_ep || !desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT || hsep->bEndpointAddress != desc->bEndpointAddress || ep_maxpacket(hsep) < usb_endpoint_maxp(desc)) @@ -782,7 +780,7 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep, writel(ecr, hsudc->regs + S3C_ECR); hsep->stopped = hsep->wedge = 0; - hsep->desc = desc; + hsep->ep.desc = desc; hsep->ep.maxpacket = usb_endpoint_maxp(desc); s3c_hsudc_set_halt(_ep, 0); @@ -805,7 +803,7 @@ static int s3c_hsudc_ep_disable(struct usb_ep *_ep) struct s3c_hsudc *hsudc = hsep->dev; unsigned long flags; - if (!_ep || !hsep->desc) + if (!_ep || !hsep->ep.desc) return -EINVAL; spin_lock_irqsave(&hsudc->lock, flags); @@ -815,7 +813,7 @@ static int s3c_hsudc_ep_disable(struct usb_ep *_ep) s3c_hsudc_nuke_ep(hsep, -ESHUTDOWN); - hsep->desc = 0; + hsep->ep.desc = NULL; hsep->stopped = 1; spin_unlock_irqrestore(&hsudc->lock, flags); @@ -834,9 +832,9 @@ static struct usb_request *s3c_hsudc_alloc_request(struct usb_ep *_ep, { struct s3c_hsudc_req *hsreq; - hsreq = kzalloc(sizeof *hsreq, gfp_flags); + hsreq = kzalloc(sizeof(*hsreq), gfp_flags); if (!hsreq) - return 0; + return NULL; INIT_LIST_HEAD(&hsreq->queue); return &hsreq->req; @@ -853,7 +851,7 @@ static void s3c_hsudc_free_request(struct usb_ep *ep, struct usb_request *_req) { struct s3c_hsudc_req *hsreq; - hsreq = container_of(_req, struct s3c_hsudc_req, req); + hsreq = our_req(_req); WARN_ON(!list_empty(&hsreq->queue)); kfree(hsreq); } @@ -876,12 +874,12 @@ static int s3c_hsudc_queue(struct usb_ep *_ep, struct usb_request *_req, u32 offset; u32 csr; - hsreq = container_of(_req, struct s3c_hsudc_req, req); + hsreq = our_req(_req); if ((!_req || !_req->complete || !_req->buf || !list_empty(&hsreq->queue))) return -EINVAL; - hsep = container_of(_ep, struct s3c_hsudc_ep, ep); + hsep = our_ep(_ep); hsudc = hsep->dev; if (!hsudc->driver || hsudc->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; @@ -902,19 +900,19 @@ static int s3c_hsudc_queue(struct usb_ep *_ep, struct usb_request *_req, if (list_empty(&hsep->queue) && !hsep->stopped) { offset = (ep_index(hsep)) ? S3C_ESR : S3C_EP0SR; if (ep_is_in(hsep)) { - csr = readl((u32)hsudc->regs + offset); + csr = readl(hsudc->regs + offset); if (!(csr & S3C_ESR_TX_SUCCESS) && (s3c_hsudc_write_fifo(hsep, hsreq) == 1)) - hsreq = 0; + hsreq = NULL; } else { - csr = readl((u32)hsudc->regs + offset); + csr = readl(hsudc->regs + offset); if ((csr & S3C_ESR_RX_SUCCESS) && (s3c_hsudc_read_fifo(hsep, hsreq) == 1)) - hsreq = 0; + hsreq = NULL; } } - if (hsreq != 0) + if (hsreq) list_add_tail(&hsreq->queue, &hsep->queue); spin_unlock_irqrestore(&hsudc->lock, flags); @@ -935,7 +933,7 @@ static int s3c_hsudc_dequeue(struct usb_ep *_ep, struct usb_request *_req) struct s3c_hsudc_req *hsreq; unsigned long flags; - hsep = container_of(_ep, struct s3c_hsudc_ep, ep); + hsep = our_ep(_ep); if (!_ep || hsep->ep.name == ep0name) return -EINVAL; @@ -1001,10 +999,10 @@ static void s3c_hsudc_initep(struct s3c_hsudc *hsudc, hsep->dev = hsudc; hsep->ep.name = hsep->name; - hsep->ep.maxpacket = epnum ? 512 : 64; + usb_ep_set_maxpacket_limit(&hsep->ep, epnum ? 512 : 64); hsep->ep.ops = &s3c_hsudc_ep_ops; hsep->fifo = hsudc->regs + S3C_BR(epnum); - hsep->desc = 0; + hsep->ep.desc = NULL; hsep->stopped = 0; hsep->wedge = 0; @@ -1155,7 +1153,6 @@ static int s3c_hsudc_start(struct usb_gadget *gadget, return -EBUSY; hsudc->driver = driver; - hsudc->gadget.dev.driver = &driver->driver; ret = regulator_bulk_enable(ARRAY_SIZE(hsudc->supplies), hsudc->supplies); @@ -1165,8 +1162,9 @@ static int s3c_hsudc_start(struct usb_gadget *gadget, } /* connect to bus through transceiver */ - if (hsudc->transceiver) { - ret = otg_set_peripheral(hsudc->transceiver, &hsudc->gadget); + if (!IS_ERR_OR_NULL(hsudc->transceiver)) { + ret = otg_set_peripheral(hsudc->transceiver->otg, + &hsudc->gadget); if (ret) { dev_err(hsudc->dev, "%s: can't bind to transceiver\n", hsudc->gadget.name); @@ -1178,6 +1176,9 @@ static int s3c_hsudc_start(struct usb_gadget *gadget, dev_info(hsudc->dev, "bound driver %s\n", driver->driver.name); s3c_hsudc_reconfig(hsudc); + + pm_runtime_get_sync(hsudc->dev); + s3c_hsudc_init_phy(); if (hsudc->pd->gpio_init) hsudc->pd->gpio_init(); @@ -1187,7 +1188,6 @@ err_otg: regulator_bulk_disable(ARRAY_SIZE(hsudc->supplies), hsudc->supplies); err_supplies: hsudc->driver = NULL; - hsudc->gadget.dev.driver = NULL; return ret; } @@ -1205,16 +1205,18 @@ static int s3c_hsudc_stop(struct usb_gadget *gadget, spin_lock_irqsave(&hsudc->lock, flags); hsudc->driver = NULL; - hsudc->gadget.dev.driver = NULL; hsudc->gadget.speed = USB_SPEED_UNKNOWN; s3c_hsudc_uninit_phy(); + + pm_runtime_put(hsudc->dev); + if (hsudc->pd->gpio_uninit) hsudc->pd->gpio_uninit(); s3c_hsudc_stop_activity(hsudc); spin_unlock_irqrestore(&hsudc->lock, flags); - if (hsudc->transceiver) - (void) otg_set_peripheral(hsudc->transceiver, NULL); + if (!IS_ERR_OR_NULL(hsudc->transceiver)) + (void) otg_set_peripheral(hsudc->transceiver->otg, NULL); disable_irq(hsudc->irq); @@ -1242,28 +1244,28 @@ static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA) if (!hsudc) return -ENODEV; - if (hsudc->transceiver) - return otg_set_power(hsudc->transceiver, mA); + if (!IS_ERR_OR_NULL(hsudc->transceiver)) + return usb_phy_set_power(hsudc->transceiver, mA); return -EOPNOTSUPP; } -static struct usb_gadget_ops s3c_hsudc_gadget_ops = { +static const struct usb_gadget_ops s3c_hsudc_gadget_ops = { .get_frame = s3c_hsudc_gadget_getframe, .udc_start = s3c_hsudc_start, .udc_stop = s3c_hsudc_stop, .vbus_draw = s3c_hsudc_vbus_draw, }; -static int __devinit s3c_hsudc_probe(struct platform_device *pdev) +static int s3c_hsudc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct resource *res; struct s3c_hsudc *hsudc; - struct s3c24xx_hsudc_platdata *pd = pdev->dev.platform_data; + struct s3c24xx_hsudc_platdata *pd = dev_get_platdata(&pdev->dev); int ret, i; - hsudc = kzalloc(sizeof(struct s3c_hsudc) + + hsudc = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsudc) + sizeof(struct s3c_hsudc_ep) * pd->epnum, GFP_KERNEL); if (!hsudc) { @@ -1273,14 +1275,14 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dev); hsudc->dev = dev; - hsudc->pd = pdev->dev.platform_data; + hsudc->pd = dev_get_platdata(&pdev->dev); - hsudc->transceiver = otg_get_transceiver(); + hsudc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); for (i = 0; i < ARRAY_SIZE(hsudc->supplies); i++) hsudc->supplies[i].supply = s3c_hsudc_supply_names[i]; - ret = regulator_bulk_get(dev, ARRAY_SIZE(hsudc->supplies), + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsudc->supplies), hsudc->supplies); if (ret != 0) { dev_err(dev, "failed to request supplies: %d\n", ret); @@ -1288,38 +1290,19 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev) } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "unable to obtain driver resource data\n"); - ret = -ENODEV; - goto err_res; - } - hsudc->mem_rsrc = request_mem_region(res->start, resource_size(res), - dev_name(&pdev->dev)); - if (!hsudc->mem_rsrc) { - dev_err(dev, "failed to reserve register area\n"); - ret = -ENODEV; + hsudc->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hsudc->regs)) { + ret = PTR_ERR(hsudc->regs); goto err_res; } - hsudc->regs = ioremap(res->start, resource_size(res)); - if (!hsudc->regs) { - dev_err(dev, "error mapping device register area\n"); - ret = -EBUSY; - goto err_remap; - } - spin_lock_init(&hsudc->lock); - dev_set_name(&hsudc->gadget.dev, "gadget"); - hsudc->gadget.max_speed = USB_SPEED_HIGH; hsudc->gadget.ops = &s3c_hsudc_gadget_ops; hsudc->gadget.name = dev_name(dev); - hsudc->gadget.dev.parent = dev; - hsudc->gadget.dev.dma_mask = dev->dma_mask; hsudc->gadget.ep0 = &hsudc->ep[0].ep; - hsudc->gadget.is_otg = 0; hsudc->gadget.is_a_peripheral = 0; hsudc->gadget.speed = USB_SPEED_UNKNOWN; @@ -1329,21 +1312,22 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev) ret = platform_get_irq(pdev, 0); if (ret < 0) { dev_err(dev, "unable to obtain IRQ number\n"); - goto err_irq; + goto err_res; } hsudc->irq = ret; - ret = request_irq(hsudc->irq, s3c_hsudc_irq, 0, driver_name, hsudc); + ret = devm_request_irq(&pdev->dev, hsudc->irq, s3c_hsudc_irq, 0, + driver_name, hsudc); if (ret < 0) { dev_err(dev, "irq request failed\n"); - goto err_irq; + goto err_res; } - hsudc->uclk = clk_get(&pdev->dev, "usb-device"); + hsudc->uclk = devm_clk_get(&pdev->dev, "usb-device"); if (IS_ERR(hsudc->uclk)) { dev_err(dev, "failed to find usb-device clock source\n"); ret = PTR_ERR(hsudc->uclk); - goto err_clk; + goto err_res; } clk_enable(hsudc->uclk); @@ -1352,36 +1336,20 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev) disable_irq(hsudc->irq); local_irq_enable(); - ret = device_register(&hsudc->gadget.dev); - if (ret) { - put_device(&hsudc->gadget.dev); - goto err_add_device; - } - ret = usb_add_gadget_udc(&pdev->dev, &hsudc->gadget); if (ret) goto err_add_udc; + pm_runtime_enable(dev); + return 0; err_add_udc: - device_unregister(&hsudc->gadget.dev); -err_add_device: clk_disable(hsudc->uclk); - clk_put(hsudc->uclk); -err_clk: - free_irq(hsudc->irq, hsudc); -err_irq: - iounmap(hsudc->regs); - -err_remap: - release_mem_region(res->start, resource_size(res)); err_res: - if (hsudc->transceiver) - otg_put_transceiver(hsudc->transceiver); + if (!IS_ERR_OR_NULL(hsudc->transceiver)) + usb_put_phy(hsudc->transceiver); - regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies); err_supplies: - kfree(hsudc); return ret; } diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index 3f87cb9344b..7987aa049fa 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -12,6 +12,8 @@ * (at your option) any later version. */ +#define pr_fmt(fmt) "s3c2410_udc: " fmt + #include <linux/module.h> #include <linux/kernel.h> #include <linux/delay.h> @@ -27,6 +29,7 @@ #include <linux/clk.h> #include <linux/gpio.h> #include <linux/prefetch.h> +#include <linux/io.h> #include <linux/debugfs.h> #include <linux/seq_file.h> @@ -35,16 +38,14 @@ #include <linux/usb/gadget.h> #include <asm/byteorder.h> -#include <asm/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/unaligned.h> #include <mach/irqs.h> #include <mach/hardware.h> #include <plat/regs-udc.h> -#include <plat/udc.h> +#include <linux/platform_data/usb-s3c2410_udc.h> #include "s3c2410_udc.h" @@ -116,7 +117,8 @@ static int dprintk(int level, const char *fmt, ...) sizeof(printk_buf)-len, fmt, args); va_end(args); - return printk(KERN_DEBUG "%s", printk_buf); + pr_debug("%s", printk_buf); + return len; } #else static int dprintk(int level, const char *fmt, ...) @@ -126,10 +128,10 @@ static int dprintk(int level, const char *fmt, ...) #endif static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p) { - u32 addr_reg,pwr_reg,ep_int_reg,usb_int_reg; + u32 addr_reg, pwr_reg, ep_int_reg, usb_int_reg; u32 ep_int_en_reg, usb_int_en_reg, ep0_csr; - u32 ep1_i_csr1,ep1_i_csr2,ep1_o_csr1,ep1_o_csr2; - u32 ep2_i_csr1,ep2_i_csr2,ep2_o_csr1,ep2_o_csr2; + u32 ep1_i_csr1, ep1_i_csr2, ep1_o_csr1, ep1_o_csr2; + u32 ep2_i_csr1, ep2_i_csr2, ep2_o_csr1, ep2_o_csr2; addr_reg = udc_read(S3C2410_UDC_FUNC_ADDR_REG); pwr_reg = udc_read(S3C2410_UDC_PWR_REG); @@ -165,10 +167,10 @@ static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p) "EP2_I_CSR2 : 0x%04X\n" "EP2_O_CSR1 : 0x%04X\n" "EP2_O_CSR2 : 0x%04X\n", - addr_reg,pwr_reg,ep_int_reg,usb_int_reg, + addr_reg, pwr_reg, ep_int_reg, usb_int_reg, ep_int_en_reg, usb_int_en_reg, ep0_csr, - ep1_i_csr1,ep1_i_csr2,ep1_o_csr1,ep1_o_csr2, - ep2_i_csr1,ep2_i_csr2,ep2_o_csr1,ep2_o_csr2 + ep1_i_csr1, ep1_i_csr2, ep1_o_csr1, ep1_o_csr2, + ep2_i_csr1, ep2_i_csr2, ep2_o_csr1, ep2_o_csr2 ); return 0; @@ -231,7 +233,7 @@ static inline void s3c2410_udc_set_ep0_de_out(void __iomem *base) { udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG); - udc_writeb(base,(S3C2410_UDC_EP0_CSR_SOPKTRDY + udc_writeb(base, (S3C2410_UDC_EP0_CSR_SOPKTRDY | S3C2410_UDC_EP0_CSR_DE), S3C2410_UDC_EP0_CSR_REG); } @@ -264,7 +266,7 @@ static void s3c2410_udc_done(struct s3c2410_ep *ep, list_del_init(&req->queue); - if (likely (req->req.status == -EINPROGRESS)) + if (likely(req->req.status == -EINPROGRESS)) req->req.status = status; else status = req->req.status; @@ -281,9 +283,9 @@ static void s3c2410_udc_nuke(struct s3c2410_udc *udc, if (&ep->queue == NULL) return; - while (!list_empty (&ep->queue)) { + while (!list_empty(&ep->queue)) { struct s3c2410_request *req; - req = list_entry (ep->queue.next, struct s3c2410_request, + req = list_entry(ep->queue.next, struct s3c2410_request, queue); s3c2410_udc_done(ep, req, status); } @@ -390,10 +392,10 @@ static int s3c2410_udc_write_fifo(struct s3c2410_ep *ep, if (idx == 0) { /* Reset signal => no need to say 'data sent' */ - if (! (udc_read(S3C2410_UDC_USB_INT_REG) + if (!(udc_read(S3C2410_UDC_USB_INT_REG) & S3C2410_UDC_USBINT_RESET)) s3c2410_udc_set_ep0_de_in(base_addr); - ep->dev->ep0state=EP0_IDLE; + ep->dev->ep0state = EP0_IDLE; } else { udc_write(idx, S3C2410_UDC_INDEX_REG); ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG); @@ -407,7 +409,7 @@ static int s3c2410_udc_write_fifo(struct s3c2410_ep *ep, } else { if (idx == 0) { /* Reset signal => no need to say 'data sent' */ - if (! (udc_read(S3C2410_UDC_USB_INT_REG) + if (!(udc_read(S3C2410_UDC_USB_INT_REG) & S3C2410_UDC_USBINT_RESET)) s3c2410_udc_set_ep0_ipr(base_addr); } else { @@ -443,7 +445,7 @@ static int s3c2410_udc_read_fifo(struct s3c2410_ep *ep, u8 *buf; u32 ep_csr; unsigned bufferspace; - int is_last=1; + int is_last = 1; unsigned avail; int fifo_count = 0; u32 idx; @@ -511,7 +513,7 @@ static int s3c2410_udc_read_fifo(struct s3c2410_ep *ep, /* Only ep0 debug messages are interesting */ if (idx == 0) dprintk(DEBUG_VERBOSE, "%s fifo count : %d [last %d]\n", - __func__, fifo_count,is_last); + __func__, fifo_count, is_last); if (is_last) { if (idx == 0) { @@ -543,7 +545,7 @@ static int s3c2410_udc_read_fifo(struct s3c2410_ep *ep, static int s3c2410_udc_read_fifo_crq(struct usb_ctrlrequest *crq) { - unsigned char *outbuf = (unsigned char*)crq; + unsigned char *outbuf = (unsigned char *)crq; int bytes_read = 0; udc_write(0, S3C2410_UDC_INDEX_REG); @@ -649,7 +651,7 @@ static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev, switch (crq->bRequest) { case USB_REQ_SET_CONFIGURATION: - dprintk(DEBUG_NORMAL, "USB_REQ_SET_CONFIGURATION ... \n"); + dprintk(DEBUG_NORMAL, "USB_REQ_SET_CONFIGURATION ...\n"); if (crq->bRequestType == USB_RECIP_DEVICE) { dev->req_config = 1; @@ -658,7 +660,7 @@ static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev, break; case USB_REQ_SET_INTERFACE: - dprintk(DEBUG_NORMAL, "USB_REQ_SET_INTERFACE ... \n"); + dprintk(DEBUG_NORMAL, "USB_REQ_SET_INTERFACE ...\n"); if (crq->bRequestType == USB_RECIP_INTERFACE) { dev->req_config = 1; @@ -667,7 +669,7 @@ static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev, break; case USB_REQ_SET_ADDRESS: - dprintk(DEBUG_NORMAL, "USB_REQ_SET_ADDRESS ... \n"); + dprintk(DEBUG_NORMAL, "USB_REQ_SET_ADDRESS ...\n"); if (crq->bRequestType == USB_RECIP_DEVICE) { tmp = crq->wValue & 0x7F; @@ -680,13 +682,12 @@ static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev, break; case USB_REQ_GET_STATUS: - dprintk(DEBUG_NORMAL, "USB_REQ_GET_STATUS ... \n"); + dprintk(DEBUG_NORMAL, "USB_REQ_GET_STATUS ...\n"); s3c2410_udc_clear_ep0_opr(base_addr); if (dev->req_std) { - if (!s3c2410_udc_get_status(dev, crq)) { + if (!s3c2410_udc_get_status(dev, crq)) return; - } } break; @@ -751,7 +752,7 @@ static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev, /* deferred i/o == no response yet */ } else if (dev->req_pending) { dprintk(DEBUG_VERBOSE, "dev->req_pending... what now?\n"); - dev->req_pending=0; + dev->req_pending = 0; } dprintk(DEBUG_VERBOSE, "ep0state %s\n", ep0states[dev->ep0state]); @@ -802,16 +803,14 @@ static void s3c2410_udc_handle_ep0(struct s3c2410_udc *dev) case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR etc */ dprintk(DEBUG_NORMAL, "EP0_IN_DATA_PHASE ... what now?\n"); - if (!(ep0csr & S3C2410_UDC_EP0_CSR_IPKRDY) && req) { + if (!(ep0csr & S3C2410_UDC_EP0_CSR_IPKRDY) && req) s3c2410_udc_write_fifo(ep, req); - } break; case EP0_OUT_DATA_PHASE: /* SET_DESCRIPTOR etc */ dprintk(DEBUG_NORMAL, "EP0_OUT_DATA_PHASE ... what now?\n"); - if ((ep0csr & S3C2410_UDC_EP0_CSR_OPKRDY) && req ) { - s3c2410_udc_read_fifo(ep,req); - } + if ((ep0csr & S3C2410_UDC_EP0_CSR_OPKRDY) && req) + s3c2410_udc_read_fifo(ep, req); break; case EP0_END_XFER: @@ -837,7 +836,7 @@ static void s3c2410_udc_handle_ep(struct s3c2410_ep *ep) u32 ep_csr1; u32 idx; - if (likely (!list_empty(&ep->queue))) + if (likely(!list_empty(&ep->queue))) req = list_entry(ep->queue.next, struct s3c2410_request, queue); else @@ -859,9 +858,8 @@ static void s3c2410_udc_handle_ep(struct s3c2410_ep *ep) return; } - if (!(ep_csr1 & S3C2410_UDC_ICSR1_PKTRDY) && req) { - s3c2410_udc_write_fifo(ep,req); - } + if (!(ep_csr1 & S3C2410_UDC_ICSR1_PKTRDY) && req) + s3c2410_udc_write_fifo(ep, req); } else { udc_write(idx, S3C2410_UDC_INDEX_REG); ep_csr1 = udc_read(S3C2410_UDC_OUT_CSR1_REG); @@ -874,9 +872,8 @@ static void s3c2410_udc_handle_ep(struct s3c2410_ep *ep) return; } - if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req) { - s3c2410_udc_read_fifo(ep,req); - } + if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req) + s3c2410_udc_read_fifo(ep, req); } } @@ -1058,12 +1055,12 @@ static int s3c2410_udc_ep_enable(struct usb_ep *_ep, struct s3c2410_ep *ep; u32 max, tmp; unsigned long flags; - u32 csr1,csr2; + u32 csr1, csr2; u32 int_en_reg; ep = to_s3c2410_ep(_ep); - if (!_ep || !desc || ep->desc + if (!_ep || !desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT) return -EINVAL; @@ -1074,9 +1071,9 @@ static int s3c2410_udc_ep_enable(struct usb_ep *_ep, max = usb_endpoint_maxp(desc) & 0x1fff; - local_irq_save (flags); + local_irq_save(flags); _ep->maxpacket = max & 0x7ff; - ep->desc = desc; + ep->ep.desc = desc; ep->halted = 0; ep->bEndpointAddress = desc->bEndpointAddress; @@ -1118,11 +1115,11 @@ static int s3c2410_udc_ep_enable(struct usb_ep *_ep, /* print some debug message */ tmp = desc->bEndpointAddress; - dprintk (DEBUG_NORMAL, "enable %s(%d) ep%x%s-blk max %02x\n", - _ep->name,ep->num, tmp, + dprintk(DEBUG_NORMAL, "enable %s(%d) ep%x%s-blk max %02x\n", + _ep->name, ep->num, tmp, desc->bEndpointAddress & USB_DIR_IN ? "in" : "out", max); - local_irq_restore (flags); + local_irq_restore(flags); s3c2410_udc_set_halt(_ep, 0); return 0; @@ -1137,7 +1134,7 @@ static int s3c2410_udc_ep_disable(struct usb_ep *_ep) unsigned long flags; u32 int_en_reg; - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { dprintk(DEBUG_NORMAL, "%s not enabled\n", _ep ? ep->ep.name : NULL); return -EINVAL; @@ -1147,10 +1144,10 @@ static int s3c2410_udc_ep_disable(struct usb_ep *_ep) dprintk(DEBUG_NORMAL, "ep_disable: %s\n", _ep->name); - ep->desc = NULL; + ep->ep.desc = NULL; ep->halted = 1; - s3c2410_udc_nuke (ep->dev, ep, -ESHUTDOWN); + s3c2410_udc_nuke(ep->dev, ep, -ESHUTDOWN); /* disable irqs */ int_en_reg = udc_read(S3C2410_UDC_EP_INT_EN_REG); @@ -1171,16 +1168,16 @@ s3c2410_udc_alloc_request(struct usb_ep *_ep, gfp_t mem_flags) { struct s3c2410_request *req; - dprintk(DEBUG_VERBOSE,"%s(%p,%d)\n", __func__, _ep, mem_flags); + dprintk(DEBUG_VERBOSE, "%s(%p,%d)\n", __func__, _ep, mem_flags); if (!_ep) return NULL; - req = kzalloc (sizeof(struct s3c2410_request), mem_flags); + req = kzalloc(sizeof(struct s3c2410_request), mem_flags); if (!req) return NULL; - INIT_LIST_HEAD (&req->queue); + INIT_LIST_HEAD(&req->queue); return &req->req; } @@ -1195,10 +1192,10 @@ s3c2410_udc_free_request(struct usb_ep *_ep, struct usb_request *_req) dprintk(DEBUG_VERBOSE, "%s(%p,%p)\n", __func__, _ep, _req); - if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) + if (!ep || !_req || (!ep->ep.desc && _ep->name != ep0name)) return; - WARN_ON (!list_empty (&req->queue)); + WARN_ON(!list_empty(&req->queue)); kfree(req); } @@ -1215,18 +1212,18 @@ static int s3c2410_udc_queue(struct usb_ep *_ep, struct usb_request *_req, int fifo_count = 0; unsigned long flags; - if (unlikely (!_ep || (!ep->desc && ep->ep.name != ep0name))) { + if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) { dprintk(DEBUG_NORMAL, "%s: invalid args\n", __func__); return -EINVAL; } dev = ep->dev; - if (unlikely (!dev->driver + if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) { return -ESHUTDOWN; } - local_irq_save (flags); + local_irq_save(flags); if (unlikely(!_req || !_req->complete || !_req->buf || !list_empty(&req->queue))) { @@ -1234,7 +1231,7 @@ static int s3c2410_udc_queue(struct usb_ep *_ep, struct usb_request *_req, dprintk(DEBUG_NORMAL, "%s: 1 X X X\n", __func__); else { dprintk(DEBUG_NORMAL, "%s: 0 %01d %01d %01d\n", - __func__, !_req->complete,!_req->buf, + __func__, !_req->complete, !_req->buf, !list_empty(&req->queue)); } @@ -1300,7 +1297,7 @@ static int s3c2410_udc_queue(struct usb_ep *_ep, struct usb_request *_req, } /* pio or dma irq handler advances the queue. */ - if (likely (req != 0)) + if (likely(req)) list_add_tail(&req->queue, &ep->queue); local_irq_restore(flags); @@ -1330,11 +1327,11 @@ static int s3c2410_udc_dequeue(struct usb_ep *_ep, struct usb_request *_req) udc = to_s3c2410_udc(ep->gadget); - local_irq_save (flags); + local_irq_save(flags); - list_for_each_entry (req, &ep->queue, queue) { + list_for_each_entry(req, &ep->queue, queue) { if (&req->req == _req) { - list_del_init (&req->queue); + list_del_init(&req->queue); _req->status = -ECONNRESET; retval = 0; break; @@ -1349,7 +1346,7 @@ static int s3c2410_udc_dequeue(struct usb_ep *_ep, struct usb_request *_req) s3c2410_udc_done(ep, req, -ECONNRESET); } - local_irq_restore (flags); + local_irq_restore(flags); return retval; } @@ -1363,12 +1360,12 @@ static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value) unsigned long flags; u32 idx; - if (unlikely (!_ep || (!ep->desc && ep->ep.name != ep0name))) { + if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) { dprintk(DEBUG_NORMAL, "%s: inval 2\n", __func__); return -EINVAL; } - local_irq_save (flags); + local_irq_save(flags); idx = ep->bEndpointAddress & 0x7F; @@ -1377,7 +1374,7 @@ static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value) s3c2410_udc_set_ep0_de_out(base_addr); } else { udc_write(idx, S3C2410_UDC_INDEX_REG); - ep_csr = udc_read((ep->bEndpointAddress &USB_DIR_IN) + ep_csr = udc_read((ep->bEndpointAddress & USB_DIR_IN) ? S3C2410_UDC_IN_CSR1_REG : S3C2410_UDC_OUT_CSR1_REG); @@ -1405,7 +1402,7 @@ static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value) } ep->halted = value ? 1 : 0; - local_irq_restore (flags); + local_irq_restore(flags); return 0; } @@ -1485,9 +1482,9 @@ static int s3c2410_udc_set_pullup(struct s3c2410_udc *udc, int is_on) } s3c2410_udc_disable(udc); } - } - else + } else { return -EOPNOTSUPP; + } return 0; } @@ -1542,9 +1539,10 @@ static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma) return -ENOTSUPP; } -static int s3c2410_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)); -static int s3c2410_udc_stop(struct usb_gadget_driver *driver); +static int s3c2410_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int s3c2410_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops s3c2410_ops = { .get_frame = s3c2410_udc_get_frame, @@ -1553,8 +1551,8 @@ static const struct usb_gadget_ops s3c2410_ops = { .pullup = s3c2410_udc_pullup, .vbus_session = s3c2410_udc_vbus_session, .vbus_draw = s3c2410_vbus_draw, - .start = s3c2410_udc_start, - .stop = s3c2410_udc_stop, + .udc_start = s3c2410_udc_start, + .udc_stop = s3c2410_udc_stop, }; static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd) @@ -1618,20 +1616,21 @@ static void s3c2410_udc_reinit(struct s3c2410_udc *dev) u32 i; /* device/ep0 records init */ - INIT_LIST_HEAD (&dev->gadget.ep_list); - INIT_LIST_HEAD (&dev->gadget.ep0->ep_list); + INIT_LIST_HEAD(&dev->gadget.ep_list); + INIT_LIST_HEAD(&dev->gadget.ep0->ep_list); dev->ep0state = EP0_IDLE; for (i = 0; i < S3C2410_ENDPOINTS; i++) { struct s3c2410_ep *ep = &dev->ep[i]; if (i != 0) - list_add_tail (&ep->ep.ep_list, &dev->gadget.ep_list); + list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); ep->dev = dev; - ep->desc = NULL; + ep->ep.desc = NULL; ep->halted = 0; - INIT_LIST_HEAD (&ep->queue); + INIT_LIST_HEAD(&ep->queue); + usb_ep_set_maxpacket_limit(&ep->ep, ep->ep.maxpacket); } } @@ -1668,82 +1667,27 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev) s3c2410_udc_command(S3C2410_UDC_P_ENABLE); } -static int s3c2410_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int s3c2410_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct s3c2410_udc *udc = the_controller; - int retval; + struct s3c2410_udc *udc = to_s3c2410(g); dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name); - /* Sanity checks */ - if (!udc) - return -ENODEV; - - if (udc->driver) - return -EBUSY; - - if (!bind || !driver->setup || driver->max_speed < USB_SPEED_FULL) { - printk(KERN_ERR "Invalid driver: bind %p setup %p speed %d\n", - bind, driver->setup, driver->max_speed); - return -EINVAL; - } -#if defined(MODULE) - if (!driver->unbind) { - printk(KERN_ERR "Invalid driver: no unbind method\n"); - return -EINVAL; - } -#endif - /* Hook the driver */ udc->driver = driver; - udc->gadget.dev.driver = &driver->driver; - - /* Bind the driver */ - if ((retval = device_add(&udc->gadget.dev)) != 0) { - printk(KERN_ERR "Error in device_add() : %d\n",retval); - goto register_error; - } - - dprintk(DEBUG_NORMAL, "binding gadget driver '%s'\n", - driver->driver.name); - - if ((retval = bind(&udc->gadget)) != 0) { - device_del(&udc->gadget.dev); - goto register_error; - } /* Enable udc */ s3c2410_udc_enable(udc); return 0; - -register_error: - udc->driver = NULL; - udc->gadget.dev.driver = NULL; - return retval; } -static int s3c2410_udc_stop(struct usb_gadget_driver *driver) +static int s3c2410_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct s3c2410_udc *udc = the_controller; - - if (!udc) - return -ENODEV; - - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; - - dprintk(DEBUG_NORMAL, "usb_gadget_unregister_driver() '%s'\n", - driver->driver.name); + struct s3c2410_udc *udc = to_s3c2410(g); - /* report disconnect */ - if (driver->disconnect) - driver->disconnect(&udc->gadget); - - driver->unbind(&udc->gadget); - - device_del(&udc->gadget.dev); udc->driver = NULL; /* Disable udc */ @@ -1866,8 +1810,8 @@ static int s3c2410_udc_probe(struct platform_device *pdev) memory.ep[4].fifo_size = S3C2440_EP_FIFO_SIZE; } - spin_lock_init (&udc->lock); - udc_info = pdev->dev.platform_data; + spin_lock_init(&udc->lock); + udc_info = dev_get_platdata(&pdev->dev); rsrc_start = S3C2410_PA_USBDEV; rsrc_len = S3C24XX_SZ_USBDEV; @@ -1881,10 +1825,6 @@ static int s3c2410_udc_probe(struct platform_device *pdev) goto err_mem; } - device_initialize(&udc->gadget.dev); - udc->gadget.dev.parent = &pdev->dev; - udc->gadget.dev.dma_mask = pdev->dev.dma_mask; - the_controller = udc; platform_set_drvdata(pdev, udc); @@ -1913,6 +1853,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) irq = gpio_to_irq(udc_info->vbus_pin); if (irq < 0) { dev_err(dev, "no irq for gpio vbus pin\n"); + retval = irq; goto err_gpio_claim; } @@ -1990,10 +1931,10 @@ static int s3c2410_udc_remove(struct platform_device *pdev) dev_dbg(&pdev->dev, "%s()\n", __func__); - usb_del_gadget_udc(&udc->gadget); if (udc->driver) return -EBUSY; + usb_del_gadget_udc(&udc->gadget); debugfs_remove(udc->regs_info); if (udc_info && !udc_info->udc_command && @@ -2010,8 +1951,6 @@ static int s3c2410_udc_remove(struct platform_device *pdev) iounmap(base_addr); release_mem_region(rsrc_start, rsrc_len); - platform_set_drvdata(pdev, NULL); - if (!IS_ERR(udc_clock) && udc_clock != NULL) { clk_disable(udc_clock); clk_put(udc_clock); @@ -2029,7 +1968,8 @@ static int s3c2410_udc_remove(struct platform_device *pdev) } #ifdef CONFIG_PM -static int s3c2410_udc_suspend(struct platform_device *pdev, pm_message_t message) +static int +s3c2410_udc_suspend(struct platform_device *pdev, pm_message_t message) { s3c2410_udc_command(S3C2410_UDC_P_DISABLE); @@ -2074,7 +2014,7 @@ static int __init udc_init(void) s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name, NULL); if (IS_ERR(s3c2410_udc_debugfs_root)) { - printk(KERN_ERR "%s: debugfs dir creation failed %ld\n", + pr_err("%s: debugfs dir creation failed %ld\n", gadget_name, PTR_ERR(s3c2410_udc_debugfs_root)); s3c2410_udc_debugfs_root = NULL; } diff --git a/drivers/usb/gadget/s3c2410_udc.h b/drivers/usb/gadget/s3c2410_udc.h index 1653bae08b8..93bf225f196 100644 --- a/drivers/usb/gadget/s3c2410_udc.h +++ b/drivers/usb/gadget/s3c2410_udc.h @@ -19,7 +19,6 @@ struct s3c2410_ep { unsigned long last_io; /* jiffies timestamp */ struct usb_gadget *gadget; struct s3c2410_udc *dev; - const struct usb_endpoint_descriptor *desc; struct usb_ep ep; u8 num; @@ -96,5 +95,6 @@ struct s3c2410_udc { u8 vbus; struct dentry *regs_info; }; +#define to_s3c2410(g) (container_of((g), struct s3c2410_udc, gadget)) #endif diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index ad9e5b2df64..1f5f978d35d 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -11,8 +11,8 @@ */ #include <linux/kernel.h> -#include <linux/utsname.h> #include <linux/device.h> +#include <linux/module.h> #include <linux/tty.h> #include <linux/tty_flip.h> @@ -29,25 +29,7 @@ #define GS_VERSION_NAME GS_LONG_NAME " " GS_VERSION_STR /*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -#include "f_acm.c" -#include "f_obex.c" -#include "f_serial.c" -#include "u_serial.c" - -/*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); /* Thanks to NetChip Technologies for donating this product ID. * @@ -61,15 +43,12 @@ /* string IDs are assigned dynamically */ -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 -#define STRING_DESCRIPTION_IDX 2 - -static char manufacturer[50]; +#define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = GS_VERSION_NAME, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = GS_VERSION_NAME, + [USB_GADGET_SERIAL_IDX].s = "", [STRING_DESCRIPTION_IDX].s = NULL /* updated; f(use_acm) */, { } /* end of list */ }; @@ -94,7 +73,7 @@ static struct usb_device_descriptor device_desc = { /* .bMaxPacketSize0 = f(hardware) */ .idVendor = cpu_to_le16(GS_VENDOR_ID), /* .idProduct = f(use_acm) */ - /* .bcdDevice = f(hardware) */ + .bcdDevice = cpu_to_le16(GS_VERSION_NUM), /* .iManufacturer = DYNAMIC */ /* .iProduct = DYNAMIC */ .bNumConfigurations = 1, @@ -137,22 +116,6 @@ MODULE_PARM_DESC(n_ports, "number of ports to create, default=1"); /*-------------------------------------------------------------------------*/ -static int __init serial_bind_config(struct usb_configuration *c) -{ - unsigned i; - int status = 0; - - for (i = 0; i < n_ports && status == 0; i++) { - if (use_acm) - status = acm_bind_config(c, i); - else if (use_obex) - status = obex_bind_config(c, i); - else - status = gser_bind_config(c, i); - } - return status; -} - static struct usb_configuration serial_config_driver = { /* .label = f(use_acm) */ /* .bConfigurationValue = f(use_acm) */ @@ -160,89 +123,120 @@ static struct usb_configuration serial_config_driver = { .bmAttributes = USB_CONFIG_ATT_SELFPOWER, }; +static struct usb_function_instance *fi_serial[MAX_U_SERIAL_PORTS]; +static struct usb_function *f_serial[MAX_U_SERIAL_PORTS]; + +static int serial_register_ports(struct usb_composite_dev *cdev, + struct usb_configuration *c, const char *f_name) +{ + int i; + int ret; + + ret = usb_add_config_only(cdev, c); + if (ret) + goto out; + + for (i = 0; i < n_ports; i++) { + + fi_serial[i] = usb_get_function_instance(f_name); + if (IS_ERR(fi_serial[i])) { + ret = PTR_ERR(fi_serial[i]); + goto fail; + } + + f_serial[i] = usb_get_function(fi_serial[i]); + if (IS_ERR(f_serial[i])) { + ret = PTR_ERR(f_serial[i]); + goto err_get_func; + } + + ret = usb_add_function(c, f_serial[i]); + if (ret) + goto err_add_func; + } + + return 0; + +err_add_func: + usb_put_function(f_serial[i]); +err_get_func: + usb_put_function_instance(fi_serial[i]); + +fail: + i--; + while (i >= 0) { + usb_remove_function(c, f_serial[i]); + usb_put_function(f_serial[i]); + usb_put_function_instance(fi_serial[i]); + i--; + } +out: + return ret; +} + static int __init gs_bind(struct usb_composite_dev *cdev) { - int gcnum; - struct usb_gadget *gadget = cdev->gadget; int status; - status = gserial_setup(cdev->gadget, n_ports); - if (status < 0) - return status; - /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - /* device description: manufacturer, product */ - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - status = usb_string_id(cdev); - if (status < 0) - goto fail; - strings_dev[STRING_MANUFACTURER_IDX].id = status; - - device_desc.iManufacturer = status; - - status = usb_string_id(cdev); + status = usb_string_ids_tab(cdev, strings_dev); if (status < 0) goto fail; - strings_dev[STRING_PRODUCT_IDX].id = status; - - device_desc.iProduct = status; - - /* config description */ - status = usb_string_id(cdev); - if (status < 0) - goto fail; - strings_dev[STRING_DESCRIPTION_IDX].id = status; - + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + status = strings_dev[STRING_DESCRIPTION_IDX].id; serial_config_driver.iConfiguration = status; - /* set up other descriptors */ - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(GS_VERSION_NUM | gcnum); - else { - /* this is so simple (for now, no altsettings) that it - * SHOULD NOT have problems with bulk-capable hardware. - * so warn about unrcognized controllers -- don't panic. - * - * things like configuration and altsetting numbering - * can need hardware-specific attention though. - */ - pr_warning("gs_bind: controller '%s' not recognized\n", - gadget->name); - device_desc.bcdDevice = - cpu_to_le16(GS_VERSION_NUM | 0x0099); - } - if (gadget_is_otg(cdev->gadget)) { serial_config_driver.descriptors = otg_desc; serial_config_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; } /* register our configuration */ - status = usb_add_config(cdev, &serial_config_driver, - serial_bind_config); + if (use_acm) { + status = serial_register_ports(cdev, &serial_config_driver, + "acm"); + usb_ep_autoconfig_reset(cdev->gadget); + } else if (use_obex) + status = serial_register_ports(cdev, &serial_config_driver, + "obex"); + else { + status = serial_register_ports(cdev, &serial_config_driver, + "gser"); + } if (status < 0) goto fail; + usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "%s\n", GS_VERSION_NAME); return 0; fail: - gserial_cleanup(); return status; } -static struct usb_composite_driver gserial_driver = { +static int gs_unbind(struct usb_composite_dev *cdev) +{ + int i; + + for (i = 0; i < n_ports; i++) { + usb_put_function(f_serial[i]); + usb_put_function_instance(fi_serial[i]); + } + return 0; +} + +static __refdata struct usb_composite_driver gserial_driver = { .name = "g_serial", .dev = &device_desc, .strings = dev_strings, - .max_speed = USB_SPEED_HIGH, + .max_speed = USB_SPEED_SUPER, + .bind = gs_bind, + .unbind = gs_unbind, }; static int __init init(void) @@ -271,13 +265,12 @@ static int __init init(void) } strings_dev[STRING_DESCRIPTION_IDX].s = serial_config_driver.label; - return usb_composite_probe(&gserial_driver, gs_bind); + return usb_composite_probe(&gserial_driver); } module_init(init); static void __exit cleanup(void) { usb_composite_unregister(&gserial_driver); - gserial_cleanup(); } module_exit(cleanup); diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c index 85ea14e2545..648f9e489b3 100644 --- a/drivers/usb/gadget/storage_common.c +++ b/drivers/usb/gadget/storage_common.c @@ -3,7 +3,7 @@ * * Copyright (C) 2003-2008 Alan Stern * Copyeight (C) 2009 Samsung Electronics - * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) + * Author: Michal Nazarewicz (mina86@mina86.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -11,36 +11,10 @@ * (at your option) any later version. */ - /* * This file requires the following identifiers used in USB strings to * be defined (each of type pointer to char): - * - fsg_string_manufacturer -- name of the manufacturer - * - fsg_string_product -- name of the product - * - fsg_string_config -- name of the configuration * - fsg_string_interface -- name of the interface - * The first four are only needed when FSG_DESCRIPTORS_DEVICE_STRINGS - * macro is defined prior to including this file. - */ - -/* - * When FSG_NO_INTR_EP is defined fsg_fs_intr_in_desc and - * fsg_hs_intr_in_desc objects as well as - * FSG_FS_FUNCTION_PRE_EP_ENTRIES and FSG_HS_FUNCTION_PRE_EP_ENTRIES - * macros are not defined. - * - * When FSG_NO_DEVICE_STRINGS is defined FSG_STRING_MANUFACTURER, - * FSG_STRING_PRODUCT, FSG_STRING_SERIAL and FSG_STRING_CONFIG are not - * defined (as well as corresponding entries in string tables are - * missing) and FSG_STRING_INTERFACE has value of zero. - * - * When FSG_NO_OTG is defined fsg_otg_desc won't be defined. - */ - -/* - * When FSG_BUFFHD_STATIC_BUFFER is defined when this file is included - * the fsg_buffhd structure's buf field will be an array of FSG_BUFLEN - * characters rather then a pointer to void. */ /* @@ -49,339 +23,17 @@ * The valid range of num_buffers is: num >= 2 && num <= 4. */ +#include <linux/module.h> +#include <linux/blkdev.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/usb/composite.h> -#include <linux/usb/storage.h> -#include <scsi/scsi.h> -#include <asm/unaligned.h> - - -/* - * Thanks to NetChip Technologies for donating this product ID. - * - * DO NOT REUSE THESE IDs with any other driver!! Ever!! - * Instead: allocate your own, using normal USB-IF procedures. - */ -#define FSG_VENDOR_ID 0x0525 /* NetChip */ -#define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */ - - -/*-------------------------------------------------------------------------*/ - - -#ifndef DEBUG -#undef VERBOSE_DEBUG -#undef DUMP_MSGS -#endif /* !DEBUG */ - -#ifdef VERBOSE_DEBUG -#define VLDBG LDBG -#else -#define VLDBG(lun, fmt, args...) do { } while (0) -#endif /* VERBOSE_DEBUG */ - -#define LDBG(lun, fmt, args...) dev_dbg (&(lun)->dev, fmt, ## args) -#define LERROR(lun, fmt, args...) dev_err (&(lun)->dev, fmt, ## args) -#define LWARN(lun, fmt, args...) dev_warn(&(lun)->dev, fmt, ## args) -#define LINFO(lun, fmt, args...) dev_info(&(lun)->dev, fmt, ## args) - -/* - * Keep those macros in sync with those in - * include/linux/usb/composite.h or else GCC will complain. If they - * are identical (the same names of arguments, white spaces in the - * same places) GCC will allow redefinition otherwise (even if some - * white space is removed or added) warning will be issued. - * - * Those macros are needed here because File Storage Gadget does not - * include the composite.h header. For composite gadgets those macros - * are redundant since composite.h is included any way. - * - * One could check whether those macros are already defined (which - * would indicate composite.h had been included) or not (which would - * indicate we were in FSG) but this is not done because a warning is - * desired if definitions here differ from the ones in composite.h. - * - * We want the definitions to match and be the same in File Storage - * Gadget as well as Mass Storage Function (and so composite gadgets - * using MSF). If someone changes them in composite.h it will produce - * a warning in this file when building MSF. - */ -#define DBG(d, fmt, args...) dev_dbg(&(d)->gadget->dev , fmt , ## args) -#define VDBG(d, fmt, args...) dev_vdbg(&(d)->gadget->dev , fmt , ## args) -#define ERROR(d, fmt, args...) dev_err(&(d)->gadget->dev , fmt , ## args) -#define WARNING(d, fmt, args...) dev_warn(&(d)->gadget->dev , fmt , ## args) -#define INFO(d, fmt, args...) dev_info(&(d)->gadget->dev , fmt , ## args) - - - -#ifdef DUMP_MSGS - -# define dump_msg(fsg, /* const char * */ label, \ - /* const u8 * */ buf, /* unsigned */ length) do { \ - if (length < 512) { \ - DBG(fsg, "%s, length %u:\n", label, length); \ - print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \ - 16, 1, buf, length, 0); \ - } \ -} while (0) - -# define dump_cdb(fsg) do { } while (0) - -#else - -# define dump_msg(fsg, /* const char * */ label, \ - /* const u8 * */ buf, /* unsigned */ length) do { } while (0) - -# ifdef VERBOSE_DEBUG - -# define dump_cdb(fsg) \ - print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \ - 16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \ - -# else - -# define dump_cdb(fsg) do { } while (0) - -# endif /* VERBOSE_DEBUG */ - -#endif /* DUMP_MSGS */ - - - - - -/*-------------------------------------------------------------------------*/ - -/* Bulk-only data structures */ - -/* Command Block Wrapper */ -struct fsg_bulk_cb_wrap { - __le32 Signature; /* Contains 'USBC' */ - u32 Tag; /* Unique per command id */ - __le32 DataTransferLength; /* Size of the data */ - u8 Flags; /* Direction in bit 7 */ - u8 Lun; /* LUN (normally 0) */ - u8 Length; /* Of the CDB, <= MAX_COMMAND_SIZE */ - u8 CDB[16]; /* Command Data Block */ -}; - -#define USB_BULK_CB_WRAP_LEN 31 -#define USB_BULK_CB_SIG 0x43425355 /* Spells out USBC */ -#define USB_BULK_IN_FLAG 0x80 - -/* Command Status Wrapper */ -struct bulk_cs_wrap { - __le32 Signature; /* Should = 'USBS' */ - u32 Tag; /* Same as original command */ - __le32 Residue; /* Amount not transferred */ - u8 Status; /* See below */ -}; - -#define USB_BULK_CS_WRAP_LEN 13 -#define USB_BULK_CS_SIG 0x53425355 /* Spells out 'USBS' */ -#define USB_STATUS_PASS 0 -#define USB_STATUS_FAIL 1 -#define USB_STATUS_PHASE_ERROR 2 - -/* Bulk-only class specific requests */ -#define USB_BULK_RESET_REQUEST 0xff -#define USB_BULK_GET_MAX_LUN_REQUEST 0xfe - - -/* CBI Interrupt data structure */ -struct interrupt_data { - u8 bType; - u8 bValue; -}; - -#define CBI_INTERRUPT_DATA_LEN 2 - -/* CBI Accept Device-Specific Command request */ -#define USB_CBI_ADSC_REQUEST 0x00 - - -/* Length of a SCSI Command Data Block */ -#define MAX_COMMAND_SIZE 16 - -/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */ -#define SS_NO_SENSE 0 -#define SS_COMMUNICATION_FAILURE 0x040800 -#define SS_INVALID_COMMAND 0x052000 -#define SS_INVALID_FIELD_IN_CDB 0x052400 -#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100 -#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500 -#define SS_MEDIUM_NOT_PRESENT 0x023a00 -#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302 -#define SS_NOT_READY_TO_READY_TRANSITION 0x062800 -#define SS_RESET_OCCURRED 0x062900 -#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900 -#define SS_UNRECOVERED_READ_ERROR 0x031100 -#define SS_WRITE_ERROR 0x030c02 -#define SS_WRITE_PROTECTED 0x072700 - -#define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */ -#define ASC(x) ((u8) ((x) >> 8)) -#define ASCQ(x) ((u8) (x)) - - -/*-------------------------------------------------------------------------*/ - - -struct fsg_lun { - struct file *filp; - loff_t file_length; - loff_t num_sectors; - - unsigned int initially_ro:1; - unsigned int ro:1; - unsigned int removable:1; - unsigned int cdrom:1; - unsigned int prevent_medium_removal:1; - unsigned int registered:1; - unsigned int info_valid:1; - unsigned int nofua:1; - - u32 sense_data; - u32 sense_data_info; - u32 unit_attention_data; - - unsigned int blkbits; /* Bits of logical block size of bound block device */ - unsigned int blksize; /* logical block size of bound block device */ - struct device dev; -}; - -#define fsg_lun_is_open(curlun) ((curlun)->filp != NULL) - -static struct fsg_lun *fsg_lun_from_dev(struct device *dev) -{ - return container_of(dev, struct fsg_lun, dev); -} - - -/* Big enough to hold our biggest descriptor */ -#define EP0_BUFSIZE 256 -#define DELAYED_STATUS (EP0_BUFSIZE + 999) /* An impossibly large value */ - -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - -static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS; -module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO); -MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers"); - -#else - -/* - * Number of buffers we will use. - * 2 is usually enough for good buffering pipeline - */ -#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS - -#endif /* CONFIG_USB_DEBUG */ - -/* check if fsg_num_buffers is within a valid range */ -static inline int fsg_num_buffers_validate(void) -{ - if (fsg_num_buffers >= 2 && fsg_num_buffers <= 4) - return 0; - pr_err("fsg_num_buffers %u is out of range (%d to %d)\n", - fsg_num_buffers, 2 ,4); - return -EINVAL; -} - -/* Default size of buffer length. */ -#define FSG_BUFLEN ((u32)16384) - -/* Maximal number of LUNs supported in mass storage function */ -#define FSG_MAX_LUNS 8 - -enum fsg_buffer_state { - BUF_STATE_EMPTY = 0, - BUF_STATE_FULL, - BUF_STATE_BUSY -}; - -struct fsg_buffhd { -#ifdef FSG_BUFFHD_STATIC_BUFFER - char buf[FSG_BUFLEN]; -#else - void *buf; -#endif - enum fsg_buffer_state state; - struct fsg_buffhd *next; - - /* - * The NetChip 2280 is faster, and handles some protocol faults - * better, if we don't submit any short bulk-out read requests. - * So we will record the intended request length here. - */ - unsigned int bulk_out_intended_length; - - struct usb_request *inreq; - int inreq_busy; - struct usb_request *outreq; - int outreq_busy; -}; - -enum fsg_state { - /* This one isn't used anywhere */ - FSG_STATE_COMMAND_PHASE = -10, - FSG_STATE_DATA_PHASE, - FSG_STATE_STATUS_PHASE, - - FSG_STATE_IDLE = 0, - FSG_STATE_ABORT_BULK_OUT, - FSG_STATE_RESET, - FSG_STATE_INTERFACE_CHANGE, - FSG_STATE_CONFIG_CHANGE, - FSG_STATE_DISCONNECT, - FSG_STATE_EXIT, - FSG_STATE_TERMINATED -}; - -enum data_direction { - DATA_DIR_UNKNOWN = 0, - DATA_DIR_FROM_HOST, - DATA_DIR_TO_HOST, - DATA_DIR_NONE -}; - - -/*-------------------------------------------------------------------------*/ - - -static inline u32 get_unaligned_be24(u8 *buf) -{ - return 0xffffff & (u32) get_unaligned_be32(buf - 1); -} - - -/*-------------------------------------------------------------------------*/ - - -enum { -#ifndef FSG_NO_DEVICE_STRINGS - FSG_STRING_MANUFACTURER = 1, - FSG_STRING_PRODUCT, - FSG_STRING_SERIAL, - FSG_STRING_CONFIG, -#endif - FSG_STRING_INTERFACE -}; - - -#ifndef FSG_NO_OTG -static struct usb_otg_descriptor -fsg_otg_desc = { - .bLength = sizeof fsg_otg_desc, - .bDescriptorType = USB_DT_OTG, - - .bmAttributes = USB_OTG_SRP, -}; -#endif +#include "storage_common.h" /* There is only one interface. */ -static struct usb_interface_descriptor -fsg_intf_desc = { +struct usb_interface_descriptor fsg_intf_desc = { .bLength = sizeof fsg_intf_desc, .bDescriptorType = USB_DT_INTERFACE, @@ -391,14 +43,14 @@ fsg_intf_desc = { .bInterfaceProtocol = USB_PR_BULK, /* Adjusted during fsg_bind() */ .iInterface = FSG_STRING_INTERFACE, }; +EXPORT_SYMBOL_GPL(fsg_intf_desc); /* * Three full-speed endpoint descriptors: bulk-in, bulk-out, and * interrupt-in. */ -static struct usb_endpoint_descriptor -fsg_fs_bulk_in_desc = { +struct usb_endpoint_descriptor fsg_fs_bulk_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -406,9 +58,9 @@ fsg_fs_bulk_in_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, /* wMaxPacketSize set by autoconfiguration */ }; +EXPORT_SYMBOL_GPL(fsg_fs_bulk_in_desc); -static struct usb_endpoint_descriptor -fsg_fs_bulk_out_desc = { +struct usb_endpoint_descriptor fsg_fs_bulk_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -416,40 +68,15 @@ fsg_fs_bulk_out_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, /* wMaxPacketSize set by autoconfiguration */ }; +EXPORT_SYMBOL_GPL(fsg_fs_bulk_out_desc); -#ifndef FSG_NO_INTR_EP - -static struct usb_endpoint_descriptor -fsg_fs_intr_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(2), - .bInterval = 32, /* frames -> 32 ms */ -}; - -#ifndef FSG_NO_OTG -# define FSG_FS_FUNCTION_PRE_EP_ENTRIES 2 -#else -# define FSG_FS_FUNCTION_PRE_EP_ENTRIES 1 -#endif - -#endif - -static struct usb_descriptor_header *fsg_fs_function[] = { -#ifndef FSG_NO_OTG - (struct usb_descriptor_header *) &fsg_otg_desc, -#endif +struct usb_descriptor_header *fsg_fs_function[] = { (struct usb_descriptor_header *) &fsg_intf_desc, (struct usb_descriptor_header *) &fsg_fs_bulk_in_desc, (struct usb_descriptor_header *) &fsg_fs_bulk_out_desc, -#ifndef FSG_NO_INTR_EP - (struct usb_descriptor_header *) &fsg_fs_intr_in_desc, -#endif NULL, }; +EXPORT_SYMBOL_GPL(fsg_fs_function); /* @@ -460,8 +87,7 @@ static struct usb_descriptor_header *fsg_fs_function[] = { * and a "device qualifier" ... plus more construction options * for the configuration descriptor. */ -static struct usb_endpoint_descriptor -fsg_hs_bulk_in_desc = { +struct usb_endpoint_descriptor fsg_hs_bulk_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -469,9 +95,9 @@ fsg_hs_bulk_in_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(512), }; +EXPORT_SYMBOL_GPL(fsg_hs_bulk_in_desc); -static struct usb_endpoint_descriptor -fsg_hs_bulk_out_desc = { +struct usb_endpoint_descriptor fsg_hs_bulk_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -480,43 +106,18 @@ fsg_hs_bulk_out_desc = { .wMaxPacketSize = cpu_to_le16(512), .bInterval = 1, /* NAK every 1 uframe */ }; +EXPORT_SYMBOL_GPL(fsg_hs_bulk_out_desc); -#ifndef FSG_NO_INTR_EP - -static struct usb_endpoint_descriptor -fsg_hs_intr_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */ - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(2), - .bInterval = 9, /* 2**(9-1) = 256 uframes -> 32 ms */ -}; - -#ifndef FSG_NO_OTG -# define FSG_HS_FUNCTION_PRE_EP_ENTRIES 2 -#else -# define FSG_HS_FUNCTION_PRE_EP_ENTRIES 1 -#endif -#endif - -static struct usb_descriptor_header *fsg_hs_function[] = { -#ifndef FSG_NO_OTG - (struct usb_descriptor_header *) &fsg_otg_desc, -#endif +struct usb_descriptor_header *fsg_hs_function[] = { (struct usb_descriptor_header *) &fsg_intf_desc, (struct usb_descriptor_header *) &fsg_hs_bulk_in_desc, (struct usb_descriptor_header *) &fsg_hs_bulk_out_desc, -#ifndef FSG_NO_INTR_EP - (struct usb_descriptor_header *) &fsg_hs_intr_in_desc, -#endif NULL, }; +EXPORT_SYMBOL_GPL(fsg_hs_function); -static struct usb_endpoint_descriptor -fsg_ss_bulk_in_desc = { +struct usb_endpoint_descriptor fsg_ss_bulk_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -524,16 +125,17 @@ fsg_ss_bulk_in_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(1024), }; +EXPORT_SYMBOL_GPL(fsg_ss_bulk_in_desc); -static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc = { +struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc = { .bLength = sizeof(fsg_ss_bulk_in_comp_desc), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, /*.bMaxBurst = DYNAMIC, */ }; +EXPORT_SYMBOL_GPL(fsg_ss_bulk_in_comp_desc); -static struct usb_endpoint_descriptor -fsg_ss_bulk_out_desc = { +struct usb_endpoint_descriptor fsg_ss_bulk_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -541,123 +143,25 @@ fsg_ss_bulk_out_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(1024), }; +EXPORT_SYMBOL_GPL(fsg_ss_bulk_out_desc); -static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = { +struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = { .bLength = sizeof(fsg_ss_bulk_in_comp_desc), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, /*.bMaxBurst = DYNAMIC, */ }; +EXPORT_SYMBOL_GPL(fsg_ss_bulk_out_comp_desc); -#ifndef FSG_NO_INTR_EP - -static struct usb_endpoint_descriptor -fsg_ss_intr_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */ - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(2), - .bInterval = 9, /* 2**(9-1) = 256 uframes -> 32 ms */ -}; - -static struct usb_ss_ep_comp_descriptor fsg_ss_intr_in_comp_desc = { - .bLength = sizeof(fsg_ss_bulk_in_comp_desc), - .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, - - .wBytesPerInterval = cpu_to_le16(2), -}; - -#ifndef FSG_NO_OTG -# define FSG_SS_FUNCTION_PRE_EP_ENTRIES 2 -#else -# define FSG_SS_FUNCTION_PRE_EP_ENTRIES 1 -#endif - -#endif - -static __maybe_unused struct usb_ext_cap_descriptor fsg_ext_cap_desc = { - .bLength = USB_DT_USB_EXT_CAP_SIZE, - .bDescriptorType = USB_DT_DEVICE_CAPABILITY, - .bDevCapabilityType = USB_CAP_TYPE_EXT, - - .bmAttributes = cpu_to_le32(USB_LPM_SUPPORT), -}; - -static __maybe_unused struct usb_ss_cap_descriptor fsg_ss_cap_desc = { - .bLength = USB_DT_USB_SS_CAP_SIZE, - .bDescriptorType = USB_DT_DEVICE_CAPABILITY, - .bDevCapabilityType = USB_SS_CAP_TYPE, - - /* .bmAttributes = LTM is not supported yet */ - - .wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION - | USB_FULL_SPEED_OPERATION - | USB_HIGH_SPEED_OPERATION - | USB_5GBPS_OPERATION), - .bFunctionalitySupport = USB_LOW_SPEED_OPERATION, - .bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT, - .bU2DevExitLat = cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT), -}; - -static __maybe_unused struct usb_bos_descriptor fsg_bos_desc = { - .bLength = USB_DT_BOS_SIZE, - .bDescriptorType = USB_DT_BOS, - - .wTotalLength = cpu_to_le16(USB_DT_BOS_SIZE - + USB_DT_USB_EXT_CAP_SIZE - + USB_DT_USB_SS_CAP_SIZE), - - .bNumDeviceCaps = 2, -}; - -static struct usb_descriptor_header *fsg_ss_function[] = { -#ifndef FSG_NO_OTG - (struct usb_descriptor_header *) &fsg_otg_desc, -#endif +struct usb_descriptor_header *fsg_ss_function[] = { (struct usb_descriptor_header *) &fsg_intf_desc, (struct usb_descriptor_header *) &fsg_ss_bulk_in_desc, (struct usb_descriptor_header *) &fsg_ss_bulk_in_comp_desc, (struct usb_descriptor_header *) &fsg_ss_bulk_out_desc, (struct usb_descriptor_header *) &fsg_ss_bulk_out_comp_desc, -#ifndef FSG_NO_INTR_EP - (struct usb_descriptor_header *) &fsg_ss_intr_in_desc, - (struct usb_descriptor_header *) &fsg_ss_intr_in_comp_desc, -#endif NULL, }; - -/* Maxpacket and other transfer characteristics vary by speed. */ -static __maybe_unused struct usb_endpoint_descriptor * -fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs, - struct usb_endpoint_descriptor *hs, - struct usb_endpoint_descriptor *ss) -{ - if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) - return ss; - else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} - - -/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */ -static struct usb_string fsg_strings[] = { -#ifndef FSG_NO_DEVICE_STRINGS - {FSG_STRING_MANUFACTURER, fsg_string_manufacturer}, - {FSG_STRING_PRODUCT, fsg_string_product}, - {FSG_STRING_SERIAL, ""}, - {FSG_STRING_CONFIG, fsg_string_config}, -#endif - {FSG_STRING_INTERFACE, fsg_string_interface}, - {} -}; - -static struct usb_gadget_strings fsg_stringtab = { - .language = 0x0409, /* en-us */ - .strings = fsg_strings, -}; +EXPORT_SYMBOL_GPL(fsg_ss_function); /*-------------------------------------------------------------------------*/ @@ -667,7 +171,17 @@ static struct usb_gadget_strings fsg_stringtab = { * the caller must own fsg->filesem for writing. */ -static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) +void fsg_lun_close(struct fsg_lun *curlun) +{ + if (curlun->filp) { + LDBG(curlun, "close backing file\n"); + fput(curlun->filp); + curlun->filp = NULL; + } +} +EXPORT_SYMBOL_GPL(fsg_lun_close); + +int fsg_lun_open(struct fsg_lun *curlun, const char *filename) { int ro; struct file *filp = NULL; @@ -676,6 +190,8 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) loff_t size; loff_t num_sectors; loff_t min_sectors; + unsigned int blkbits; + unsigned int blksize; /* R/W if we can, R/O if we must */ ro = curlun->initially_ro; @@ -694,9 +210,8 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) if (!(filp->f_mode & FMODE_WRITE)) ro = 1; - if (filp->f_path.dentry) - inode = filp->f_path.dentry->d_inode; - if (!inode || (!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))) { + inode = file_inode(filp); + if ((!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))) { LINFO(curlun, "invalid file type: %s\n", filename); goto out; } @@ -705,11 +220,11 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) * If we can't read the file, it's no good. * If we can't write the file, use it read-only. */ - if (!filp->f_op || !(filp->f_op->read || filp->f_op->aio_read)) { + if (!(filp->f_mode & FMODE_CAN_READ)) { LINFO(curlun, "file not readable: %s\n", filename); goto out; } - if (!(filp->f_op->write || filp->f_op->aio_write)) + if (!(filp->f_mode & FMODE_CAN_WRITE)) ro = 1; size = i_size_read(inode->i_mapping->host); @@ -720,17 +235,17 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) } if (curlun->cdrom) { - curlun->blksize = 2048; - curlun->blkbits = 11; + blksize = 2048; + blkbits = 11; } else if (inode->i_bdev) { - curlun->blksize = bdev_logical_block_size(inode->i_bdev); - curlun->blkbits = blksize_bits(curlun->blksize); + blksize = bdev_logical_block_size(inode->i_bdev); + blkbits = blksize_bits(blksize); } else { - curlun->blksize = 512; - curlun->blkbits = 9; + blksize = 512; + blkbits = 9; } - num_sectors = size >> curlun->blkbits; /* File size in logic-block-size blocks */ + num_sectors = size >> blkbits; /* File size in logic-block-size blocks */ min_sectors = 1; if (curlun->cdrom) { min_sectors = 300; /* Smallest track is 300 frames */ @@ -747,28 +262,23 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) goto out; } - get_file(filp); + if (fsg_lun_is_open(curlun)) + fsg_lun_close(curlun); + + curlun->blksize = blksize; + curlun->blkbits = blkbits; curlun->ro = ro; curlun->filp = filp; curlun->file_length = size; curlun->num_sectors = num_sectors; LDBG(curlun, "open backing file: %s\n", filename); - rc = 0; + return 0; out: - filp_close(filp, current->files); + fput(filp); return rc; } - - -static void fsg_lun_close(struct fsg_lun *curlun) -{ - if (curlun->filp) { - LDBG(curlun, "close backing file\n"); - fput(curlun->filp); - curlun->filp = NULL; - } -} +EXPORT_SYMBOL_GPL(fsg_lun_open); /*-------------------------------------------------------------------------*/ @@ -777,7 +287,7 @@ static void fsg_lun_close(struct fsg_lun *curlun) * Sync the file data, don't bother with the metadata. * This code was copied from fs/buffer.c:sys_fdatasync(). */ -static int fsg_lun_fsync_sub(struct fsg_lun *curlun) +int fsg_lun_fsync_sub(struct fsg_lun *curlun) { struct file *filp = curlun->filp; @@ -785,8 +295,9 @@ static int fsg_lun_fsync_sub(struct fsg_lun *curlun) return 0; return vfs_fsync(filp, 1); } +EXPORT_SYMBOL_GPL(fsg_lun_fsync_sub); -static void store_cdrom_address(u8 *dest, int msf, u32 addr) +void store_cdrom_address(u8 *dest, int msf, u32 addr) { if (msf) { /* Convert to Minutes-Seconds-Frames */ @@ -803,34 +314,28 @@ static void store_cdrom_address(u8 *dest, int msf, u32 addr) put_unaligned_be32(addr, dest); } } - +EXPORT_SYMBOL_GPL(store_cdrom_address); /*-------------------------------------------------------------------------*/ -static ssize_t fsg_show_ro(struct device *dev, struct device_attribute *attr, - char *buf) +ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf) { - struct fsg_lun *curlun = fsg_lun_from_dev(dev); - return sprintf(buf, "%d\n", fsg_lun_is_open(curlun) ? curlun->ro : curlun->initially_ro); } +EXPORT_SYMBOL_GPL(fsg_show_ro); -static ssize_t fsg_show_nofua(struct device *dev, struct device_attribute *attr, - char *buf) +ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf) { - struct fsg_lun *curlun = fsg_lun_from_dev(dev); - return sprintf(buf, "%u\n", curlun->nofua); } +EXPORT_SYMBOL_GPL(fsg_show_nofua); -static ssize_t fsg_show_file(struct device *dev, struct device_attribute *attr, - char *buf) +ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem, + char *buf) { - struct fsg_lun *curlun = fsg_lun_from_dev(dev); - struct rw_semaphore *filesem = dev_get_drvdata(dev); char *p; ssize_t rc; @@ -852,17 +357,44 @@ static ssize_t fsg_show_file(struct device *dev, struct device_attribute *attr, up_read(filesem); return rc; } +EXPORT_SYMBOL_GPL(fsg_show_file); + +ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf) +{ + return sprintf(buf, "%u\n", curlun->cdrom); +} +EXPORT_SYMBOL_GPL(fsg_show_cdrom); + +ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf) +{ + return sprintf(buf, "%u\n", curlun->removable); +} +EXPORT_SYMBOL_GPL(fsg_show_removable); + +/* + * The caller must hold fsg->filesem for reading when calling this function. + */ +static ssize_t _fsg_store_ro(struct fsg_lun *curlun, bool ro) +{ + if (fsg_lun_is_open(curlun)) { + LDBG(curlun, "read-only status change prevented\n"); + return -EBUSY; + } + curlun->ro = ro; + curlun->initially_ro = ro; + LDBG(curlun, "read-only status set to %d\n", curlun->ro); + + return 0; +} -static ssize_t fsg_store_ro(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem, + const char *buf, size_t count) { ssize_t rc; - struct fsg_lun *curlun = fsg_lun_from_dev(dev); - struct rw_semaphore *filesem = dev_get_drvdata(dev); - unsigned ro; + bool ro; - rc = kstrtouint(buf, 2, &ro); + rc = strtobool(buf, &ro); if (rc) return rc; @@ -871,28 +403,21 @@ static ssize_t fsg_store_ro(struct device *dev, struct device_attribute *attr, * backing file is closed. */ down_read(filesem); - if (fsg_lun_is_open(curlun)) { - LDBG(curlun, "read-only status change prevented\n"); - rc = -EBUSY; - } else { - curlun->ro = ro; - curlun->initially_ro = ro; - LDBG(curlun, "read-only status set to %d\n", curlun->ro); + rc = _fsg_store_ro(curlun, ro); + if (!rc) rc = count; - } up_read(filesem); + return rc; } +EXPORT_SYMBOL_GPL(fsg_store_ro); -static ssize_t fsg_store_nofua(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count) { - struct fsg_lun *curlun = fsg_lun_from_dev(dev); - unsigned nofua; + bool nofua; int ret; - ret = kstrtouint(buf, 2, &nofua); + ret = strtobool(buf, &nofua); if (ret) return ret; @@ -904,12 +429,11 @@ static ssize_t fsg_store_nofua(struct device *dev, return count; } +EXPORT_SYMBOL_GPL(fsg_store_nofua); -static ssize_t fsg_store_file(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem, + const char *buf, size_t count) { - struct fsg_lun *curlun = fsg_lun_from_dev(dev); - struct rw_semaphore *filesem = dev_get_drvdata(dev); int rc = 0; if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) { @@ -921,20 +445,60 @@ static ssize_t fsg_store_file(struct device *dev, struct device_attribute *attr, if (count > 0 && buf[count-1] == '\n') ((char *) buf)[count-1] = 0; /* Ugh! */ - /* Eject current medium */ - down_write(filesem); - if (fsg_lun_is_open(curlun)) { - fsg_lun_close(curlun); - curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT; - } - /* Load new medium */ + down_write(filesem); if (count > 0 && buf[0]) { + /* fsg_lun_open() will close existing file if any. */ rc = fsg_lun_open(curlun, buf); if (rc == 0) curlun->unit_attention_data = SS_NOT_READY_TO_READY_TRANSITION; + } else if (fsg_lun_is_open(curlun)) { + fsg_lun_close(curlun); + curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT; } up_write(filesem); return (rc < 0 ? rc : count); } +EXPORT_SYMBOL_GPL(fsg_store_file); + +ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem, + const char *buf, size_t count) +{ + bool cdrom; + int ret; + + ret = strtobool(buf, &cdrom); + if (ret) + return ret; + + down_read(filesem); + ret = cdrom ? _fsg_store_ro(curlun, true) : 0; + + if (!ret) { + curlun->cdrom = cdrom; + ret = count; + } + up_read(filesem); + + return ret; +} +EXPORT_SYMBOL_GPL(fsg_store_cdrom); + +ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf, + size_t count) +{ + bool removable; + int ret; + + ret = strtobool(buf, &removable); + if (ret) + return ret; + + curlun->removable = removable; + + return count; +} +EXPORT_SYMBOL_GPL(fsg_store_removable); + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/storage_common.h b/drivers/usb/gadget/storage_common.h new file mode 100644 index 00000000000..70c891469f5 --- /dev/null +++ b/drivers/usb/gadget/storage_common.h @@ -0,0 +1,225 @@ +#ifndef USB_STORAGE_COMMON_H +#define USB_STORAGE_COMMON_H + +#include <linux/device.h> +#include <linux/usb/storage.h> +#include <scsi/scsi.h> +#include <asm/unaligned.h> + +#ifndef DEBUG +#undef VERBOSE_DEBUG +#undef DUMP_MSGS +#endif /* !DEBUG */ + +#ifdef VERBOSE_DEBUG +#define VLDBG LDBG +#else +#define VLDBG(lun, fmt, args...) do { } while (0) +#endif /* VERBOSE_DEBUG */ + +#define _LMSG(func, lun, fmt, args...) \ + do { \ + if ((lun)->name_pfx && *(lun)->name_pfx) \ + func("%s/%s: " fmt, *(lun)->name_pfx, \ + (lun)->name, ## args); \ + else \ + func("%s: " fmt, (lun)->name, ## args); \ + } while (0) + +#define LDBG(lun, fmt, args...) _LMSG(pr_debug, lun, fmt, ## args) +#define LERROR(lun, fmt, args...) _LMSG(pr_err, lun, fmt, ## args) +#define LWARN(lun, fmt, args...) _LMSG(pr_warn, lun, fmt, ## args) +#define LINFO(lun, fmt, args...) _LMSG(pr_info, lun, fmt, ## args) + + +#ifdef DUMP_MSGS + +# define dump_msg(fsg, /* const char * */ label, \ + /* const u8 * */ buf, /* unsigned */ length) \ +do { \ + if (length < 512) { \ + DBG(fsg, "%s, length %u:\n", label, length); \ + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \ + 16, 1, buf, length, 0); \ + } \ +} while (0) + +# define dump_cdb(fsg) do { } while (0) + +#else + +# define dump_msg(fsg, /* const char * */ label, \ + /* const u8 * */ buf, /* unsigned */ length) do { } while (0) + +# ifdef VERBOSE_DEBUG + +# define dump_cdb(fsg) \ + print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \ + 16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \ + +# else + +# define dump_cdb(fsg) do { } while (0) + +# endif /* VERBOSE_DEBUG */ + +#endif /* DUMP_MSGS */ + +/* Length of a SCSI Command Data Block */ +#define MAX_COMMAND_SIZE 16 + +/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */ +#define SS_NO_SENSE 0 +#define SS_COMMUNICATION_FAILURE 0x040800 +#define SS_INVALID_COMMAND 0x052000 +#define SS_INVALID_FIELD_IN_CDB 0x052400 +#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100 +#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500 +#define SS_MEDIUM_NOT_PRESENT 0x023a00 +#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302 +#define SS_NOT_READY_TO_READY_TRANSITION 0x062800 +#define SS_RESET_OCCURRED 0x062900 +#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900 +#define SS_UNRECOVERED_READ_ERROR 0x031100 +#define SS_WRITE_ERROR 0x030c02 +#define SS_WRITE_PROTECTED 0x072700 + +#define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */ +#define ASC(x) ((u8) ((x) >> 8)) +#define ASCQ(x) ((u8) (x)) + +struct fsg_lun { + struct file *filp; + loff_t file_length; + loff_t num_sectors; + + unsigned int initially_ro:1; + unsigned int ro:1; + unsigned int removable:1; + unsigned int cdrom:1; + unsigned int prevent_medium_removal:1; + unsigned int registered:1; + unsigned int info_valid:1; + unsigned int nofua:1; + + u32 sense_data; + u32 sense_data_info; + u32 unit_attention_data; + + unsigned int blkbits; /* Bits of logical block size + of bound block device */ + unsigned int blksize; /* logical block size of bound block device */ + struct device dev; + const char *name; /* "lun.name" */ + const char **name_pfx; /* "function.name" */ +}; + +static inline bool fsg_lun_is_open(struct fsg_lun *curlun) +{ + return curlun->filp != NULL; +} + +/* Default size of buffer length. */ +#define FSG_BUFLEN ((u32)16384) + +/* Maximal number of LUNs supported in mass storage function */ +#define FSG_MAX_LUNS 8 + +enum fsg_buffer_state { + BUF_STATE_EMPTY = 0, + BUF_STATE_FULL, + BUF_STATE_BUSY +}; + +struct fsg_buffhd { + void *buf; + enum fsg_buffer_state state; + struct fsg_buffhd *next; + + /* + * The NetChip 2280 is faster, and handles some protocol faults + * better, if we don't submit any short bulk-out read requests. + * So we will record the intended request length here. + */ + unsigned int bulk_out_intended_length; + + struct usb_request *inreq; + int inreq_busy; + struct usb_request *outreq; + int outreq_busy; +}; + +enum fsg_state { + /* This one isn't used anywhere */ + FSG_STATE_COMMAND_PHASE = -10, + FSG_STATE_DATA_PHASE, + FSG_STATE_STATUS_PHASE, + + FSG_STATE_IDLE = 0, + FSG_STATE_ABORT_BULK_OUT, + FSG_STATE_RESET, + FSG_STATE_INTERFACE_CHANGE, + FSG_STATE_CONFIG_CHANGE, + FSG_STATE_DISCONNECT, + FSG_STATE_EXIT, + FSG_STATE_TERMINATED +}; + +enum data_direction { + DATA_DIR_UNKNOWN = 0, + DATA_DIR_FROM_HOST, + DATA_DIR_TO_HOST, + DATA_DIR_NONE +}; + +static inline u32 get_unaligned_be24(u8 *buf) +{ + return 0xffffff & (u32) get_unaligned_be32(buf - 1); +} + +static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev) +{ + return container_of(dev, struct fsg_lun, dev); +} + +enum { + FSG_STRING_INTERFACE +}; + +extern struct usb_interface_descriptor fsg_intf_desc; + +extern struct usb_endpoint_descriptor fsg_fs_bulk_in_desc; +extern struct usb_endpoint_descriptor fsg_fs_bulk_out_desc; +extern struct usb_descriptor_header *fsg_fs_function[]; + +extern struct usb_endpoint_descriptor fsg_hs_bulk_in_desc; +extern struct usb_endpoint_descriptor fsg_hs_bulk_out_desc; +extern struct usb_descriptor_header *fsg_hs_function[]; + +extern struct usb_endpoint_descriptor fsg_ss_bulk_in_desc; +extern struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc; +extern struct usb_endpoint_descriptor fsg_ss_bulk_out_desc; +extern struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc; +extern struct usb_descriptor_header *fsg_ss_function[]; + +void fsg_lun_close(struct fsg_lun *curlun); +int fsg_lun_open(struct fsg_lun *curlun, const char *filename); +int fsg_lun_fsync_sub(struct fsg_lun *curlun); +void store_cdrom_address(u8 *dest, int msf, u32 addr); +ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf); +ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf); +ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem, + char *buf); +ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf); +ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf); +ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem, + const char *buf, size_t count); +ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count); +ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem, + const char *buf, size_t count); +ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem, + const char *buf, size_t count); +ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf, + size_t count); + +#endif /* USB_STORAGE_COMMON_H */ diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c new file mode 100644 index 00000000000..6cdb7a534f2 --- /dev/null +++ b/drivers/usb/gadget/tcm_usb_gadget.c @@ -0,0 +1,2473 @@ +/* Target based USB-Gadget + * + * UAS protocol handling, target callbacks, configfs handling, + * BBB (USB Mass Storage Class Bulk-Only (BBB) and Transport protocol handling. + * + * Author: Sebastian Andrzej Siewior <bigeasy at linutronix dot de> + * License: GPLv2 as published by FSF. + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/string.h> +#include <linux/configfs.h> +#include <linux/ctype.h> +#include <linux/usb/ch9.h> +#include <linux/usb/composite.h> +#include <linux/usb/gadget.h> +#include <linux/usb/storage.h> +#include <scsi/scsi.h> +#include <scsi/scsi_tcq.h> +#include <target/target_core_base.h> +#include <target/target_core_fabric.h> +#include <target/target_core_fabric_configfs.h> +#include <target/target_core_configfs.h> +#include <target/configfs_macros.h> +#include <asm/unaligned.h> + +#include "tcm_usb_gadget.h" + +USB_GADGET_COMPOSITE_OPTIONS(); + +static struct target_fabric_configfs *usbg_fabric_configfs; + +static inline struct f_uas *to_f_uas(struct usb_function *f) +{ + return container_of(f, struct f_uas, function); +} + +static void usbg_cmd_release(struct kref *); + +static inline void usbg_cleanup_cmd(struct usbg_cmd *cmd) +{ + kref_put(&cmd->ref, usbg_cmd_release); +} + +/* Start bot.c code */ + +static int bot_enqueue_cmd_cbw(struct f_uas *fu) +{ + int ret; + + if (fu->flags & USBG_BOT_CMD_PEND) + return 0; + + ret = usb_ep_queue(fu->ep_out, fu->cmd.req, GFP_ATOMIC); + if (!ret) + fu->flags |= USBG_BOT_CMD_PEND; + return ret; +} + +static void bot_status_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct usbg_cmd *cmd = req->context; + struct f_uas *fu = cmd->fu; + + usbg_cleanup_cmd(cmd); + if (req->status < 0) { + pr_err("ERR %s(%d)\n", __func__, __LINE__); + return; + } + + /* CSW completed, wait for next CBW */ + bot_enqueue_cmd_cbw(fu); +} + +static void bot_enqueue_sense_code(struct f_uas *fu, struct usbg_cmd *cmd) +{ + struct bulk_cs_wrap *csw = &fu->bot_status.csw; + int ret; + u8 *sense; + unsigned int csw_stat; + + csw_stat = cmd->csw_code; + + /* + * We can't send SENSE as a response. So we take ASC & ASCQ from our + * sense buffer and queue it and hope the host sends a REQUEST_SENSE + * command where it learns why we failed. + */ + sense = cmd->sense_iu.sense; + + csw->Tag = cmd->bot_tag; + csw->Status = csw_stat; + fu->bot_status.req->context = cmd; + ret = usb_ep_queue(fu->ep_in, fu->bot_status.req, GFP_ATOMIC); + if (ret) + pr_err("%s(%d) ERR: %d\n", __func__, __LINE__, ret); +} + +static void bot_err_compl(struct usb_ep *ep, struct usb_request *req) +{ + struct usbg_cmd *cmd = req->context; + struct f_uas *fu = cmd->fu; + + if (req->status < 0) + pr_err("ERR %s(%d)\n", __func__, __LINE__); + + if (cmd->data_len) { + if (cmd->data_len > ep->maxpacket) { + req->length = ep->maxpacket; + cmd->data_len -= ep->maxpacket; + } else { + req->length = cmd->data_len; + cmd->data_len = 0; + } + + usb_ep_queue(ep, req, GFP_ATOMIC); + return ; + } + bot_enqueue_sense_code(fu, cmd); +} + +static void bot_send_bad_status(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct bulk_cs_wrap *csw = &fu->bot_status.csw; + struct usb_request *req; + struct usb_ep *ep; + + csw->Residue = cpu_to_le32(cmd->data_len); + + if (cmd->data_len) { + if (cmd->is_read) { + ep = fu->ep_in; + req = fu->bot_req_in; + } else { + ep = fu->ep_out; + req = fu->bot_req_out; + } + + if (cmd->data_len > fu->ep_in->maxpacket) { + req->length = ep->maxpacket; + cmd->data_len -= ep->maxpacket; + } else { + req->length = cmd->data_len; + cmd->data_len = 0; + } + req->complete = bot_err_compl; + req->context = cmd; + req->buf = fu->cmd.buf; + usb_ep_queue(ep, req, GFP_KERNEL); + } else { + bot_enqueue_sense_code(fu, cmd); + } +} + +static int bot_send_status(struct usbg_cmd *cmd, bool moved_data) +{ + struct f_uas *fu = cmd->fu; + struct bulk_cs_wrap *csw = &fu->bot_status.csw; + int ret; + + if (cmd->se_cmd.scsi_status == SAM_STAT_GOOD) { + if (!moved_data && cmd->data_len) { + /* + * the host wants to move data, we don't. Fill / empty + * the pipe and then send the csw with reside set. + */ + cmd->csw_code = US_BULK_STAT_OK; + bot_send_bad_status(cmd); + return 0; + } + + csw->Tag = cmd->bot_tag; + csw->Residue = cpu_to_le32(0); + csw->Status = US_BULK_STAT_OK; + fu->bot_status.req->context = cmd; + + ret = usb_ep_queue(fu->ep_in, fu->bot_status.req, GFP_KERNEL); + if (ret) + pr_err("%s(%d) ERR: %d\n", __func__, __LINE__, ret); + } else { + cmd->csw_code = US_BULK_STAT_FAIL; + bot_send_bad_status(cmd); + } + return 0; +} + +/* + * Called after command (no data transfer) or after the write (to device) + * operation is completed + */ +static int bot_send_status_response(struct usbg_cmd *cmd) +{ + bool moved_data = false; + + if (!cmd->is_read) + moved_data = true; + return bot_send_status(cmd, moved_data); +} + +/* Read request completed, now we have to send the CSW */ +static void bot_read_compl(struct usb_ep *ep, struct usb_request *req) +{ + struct usbg_cmd *cmd = req->context; + + if (req->status < 0) + pr_err("ERR %s(%d)\n", __func__, __LINE__); + + bot_send_status(cmd, true); +} + +static int bot_send_read_response(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct se_cmd *se_cmd = &cmd->se_cmd; + struct usb_gadget *gadget = fuas_to_gadget(fu); + int ret; + + if (!cmd->data_len) { + cmd->csw_code = US_BULK_STAT_PHASE; + bot_send_bad_status(cmd); + return 0; + } + + if (!gadget->sg_supported) { + cmd->data_buf = kmalloc(se_cmd->data_length, GFP_ATOMIC); + if (!cmd->data_buf) + return -ENOMEM; + + sg_copy_to_buffer(se_cmd->t_data_sg, + se_cmd->t_data_nents, + cmd->data_buf, + se_cmd->data_length); + + fu->bot_req_in->buf = cmd->data_buf; + } else { + fu->bot_req_in->buf = NULL; + fu->bot_req_in->num_sgs = se_cmd->t_data_nents; + fu->bot_req_in->sg = se_cmd->t_data_sg; + } + + fu->bot_req_in->complete = bot_read_compl; + fu->bot_req_in->length = se_cmd->data_length; + fu->bot_req_in->context = cmd; + ret = usb_ep_queue(fu->ep_in, fu->bot_req_in, GFP_ATOMIC); + if (ret) + pr_err("%s(%d)\n", __func__, __LINE__); + return 0; +} + +static void usbg_data_write_cmpl(struct usb_ep *, struct usb_request *); +static int usbg_prepare_w_request(struct usbg_cmd *, struct usb_request *); + +static int bot_send_write_request(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct se_cmd *se_cmd = &cmd->se_cmd; + struct usb_gadget *gadget = fuas_to_gadget(fu); + int ret; + + init_completion(&cmd->write_complete); + cmd->fu = fu; + + if (!cmd->data_len) { + cmd->csw_code = US_BULK_STAT_PHASE; + return -EINVAL; + } + + if (!gadget->sg_supported) { + cmd->data_buf = kmalloc(se_cmd->data_length, GFP_KERNEL); + if (!cmd->data_buf) + return -ENOMEM; + + fu->bot_req_out->buf = cmd->data_buf; + } else { + fu->bot_req_out->buf = NULL; + fu->bot_req_out->num_sgs = se_cmd->t_data_nents; + fu->bot_req_out->sg = se_cmd->t_data_sg; + } + + fu->bot_req_out->complete = usbg_data_write_cmpl; + fu->bot_req_out->length = se_cmd->data_length; + fu->bot_req_out->context = cmd; + + ret = usbg_prepare_w_request(cmd, fu->bot_req_out); + if (ret) + goto cleanup; + ret = usb_ep_queue(fu->ep_out, fu->bot_req_out, GFP_KERNEL); + if (ret) + pr_err("%s(%d)\n", __func__, __LINE__); + + wait_for_completion(&cmd->write_complete); + target_execute_cmd(se_cmd); +cleanup: + return ret; +} + +static int bot_submit_command(struct f_uas *, void *, unsigned int); + +static void bot_cmd_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_uas *fu = req->context; + int ret; + + fu->flags &= ~USBG_BOT_CMD_PEND; + + if (req->status < 0) + return; + + ret = bot_submit_command(fu, req->buf, req->actual); + if (ret) + pr_err("%s(%d): %d\n", __func__, __LINE__, ret); +} + +static int bot_prepare_reqs(struct f_uas *fu) +{ + int ret; + + fu->bot_req_in = usb_ep_alloc_request(fu->ep_in, GFP_KERNEL); + if (!fu->bot_req_in) + goto err; + + fu->bot_req_out = usb_ep_alloc_request(fu->ep_out, GFP_KERNEL); + if (!fu->bot_req_out) + goto err_out; + + fu->cmd.req = usb_ep_alloc_request(fu->ep_out, GFP_KERNEL); + if (!fu->cmd.req) + goto err_cmd; + + fu->bot_status.req = usb_ep_alloc_request(fu->ep_in, GFP_KERNEL); + if (!fu->bot_status.req) + goto err_sts; + + fu->bot_status.req->buf = &fu->bot_status.csw; + fu->bot_status.req->length = US_BULK_CS_WRAP_LEN; + fu->bot_status.req->complete = bot_status_complete; + fu->bot_status.csw.Signature = cpu_to_le32(US_BULK_CS_SIGN); + + fu->cmd.buf = kmalloc(fu->ep_out->maxpacket, GFP_KERNEL); + if (!fu->cmd.buf) + goto err_buf; + + fu->cmd.req->complete = bot_cmd_complete; + fu->cmd.req->buf = fu->cmd.buf; + fu->cmd.req->length = fu->ep_out->maxpacket; + fu->cmd.req->context = fu; + + ret = bot_enqueue_cmd_cbw(fu); + if (ret) + goto err_queue; + return 0; +err_queue: + kfree(fu->cmd.buf); + fu->cmd.buf = NULL; +err_buf: + usb_ep_free_request(fu->ep_in, fu->bot_status.req); +err_sts: + usb_ep_free_request(fu->ep_out, fu->cmd.req); + fu->cmd.req = NULL; +err_cmd: + usb_ep_free_request(fu->ep_out, fu->bot_req_out); + fu->bot_req_out = NULL; +err_out: + usb_ep_free_request(fu->ep_in, fu->bot_req_in); + fu->bot_req_in = NULL; +err: + pr_err("BOT: endpoint setup failed\n"); + return -ENOMEM; +} + +static void bot_cleanup_old_alt(struct f_uas *fu) +{ + if (!(fu->flags & USBG_ENABLED)) + return; + + usb_ep_disable(fu->ep_in); + usb_ep_disable(fu->ep_out); + + if (!fu->bot_req_in) + return; + + usb_ep_free_request(fu->ep_in, fu->bot_req_in); + usb_ep_free_request(fu->ep_out, fu->bot_req_out); + usb_ep_free_request(fu->ep_out, fu->cmd.req); + usb_ep_free_request(fu->ep_out, fu->bot_status.req); + + kfree(fu->cmd.buf); + + fu->bot_req_in = NULL; + fu->bot_req_out = NULL; + fu->cmd.req = NULL; + fu->bot_status.req = NULL; + fu->cmd.buf = NULL; +} + +static void bot_set_alt(struct f_uas *fu) +{ + struct usb_function *f = &fu->function; + struct usb_gadget *gadget = f->config->cdev->gadget; + int ret; + + fu->flags = USBG_IS_BOT; + + config_ep_by_speed(gadget, f, fu->ep_in); + ret = usb_ep_enable(fu->ep_in); + if (ret) + goto err_b_in; + + config_ep_by_speed(gadget, f, fu->ep_out); + ret = usb_ep_enable(fu->ep_out); + if (ret) + goto err_b_out; + + ret = bot_prepare_reqs(fu); + if (ret) + goto err_wq; + fu->flags |= USBG_ENABLED; + pr_info("Using the BOT protocol\n"); + return; +err_wq: + usb_ep_disable(fu->ep_out); +err_b_out: + usb_ep_disable(fu->ep_in); +err_b_in: + fu->flags = USBG_IS_BOT; +} + +static int usbg_bot_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_uas *fu = to_f_uas(f); + struct usb_composite_dev *cdev = f->config->cdev; + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + int luns; + u8 *ret_lun; + + switch (ctrl->bRequest) { + case US_BULK_GET_MAX_LUN: + if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_CLASS | + USB_RECIP_INTERFACE)) + return -ENOTSUPP; + + if (w_length < 1) + return -EINVAL; + if (w_value != 0) + return -EINVAL; + luns = atomic_read(&fu->tpg->tpg_port_count); + if (!luns) { + pr_err("No LUNs configured?\n"); + return -EINVAL; + } + /* + * If 4 LUNs are present we return 3 i.e. LUN 0..3 can be + * accessed. The upper limit is 0xf + */ + luns--; + if (luns > 0xf) { + pr_info_once("Limiting the number of luns to 16\n"); + luns = 0xf; + } + ret_lun = cdev->req->buf; + *ret_lun = luns; + cdev->req->length = 1; + return usb_ep_queue(cdev->gadget->ep0, cdev->req, GFP_ATOMIC); + break; + + case US_BULK_RESET_REQUEST: + /* XXX maybe we should remove previous requests for IN + OUT */ + bot_enqueue_cmd_cbw(fu); + return 0; + break; + } + return -ENOTSUPP; +} + +/* Start uas.c code */ + +static void uasp_cleanup_one_stream(struct f_uas *fu, struct uas_stream *stream) +{ + /* We have either all three allocated or none */ + if (!stream->req_in) + return; + + usb_ep_free_request(fu->ep_in, stream->req_in); + usb_ep_free_request(fu->ep_out, stream->req_out); + usb_ep_free_request(fu->ep_status, stream->req_status); + + stream->req_in = NULL; + stream->req_out = NULL; + stream->req_status = NULL; +} + +static void uasp_free_cmdreq(struct f_uas *fu) +{ + usb_ep_free_request(fu->ep_cmd, fu->cmd.req); + kfree(fu->cmd.buf); + fu->cmd.req = NULL; + fu->cmd.buf = NULL; +} + +static void uasp_cleanup_old_alt(struct f_uas *fu) +{ + int i; + + if (!(fu->flags & USBG_ENABLED)) + return; + + usb_ep_disable(fu->ep_in); + usb_ep_disable(fu->ep_out); + usb_ep_disable(fu->ep_status); + usb_ep_disable(fu->ep_cmd); + + for (i = 0; i < UASP_SS_EP_COMP_NUM_STREAMS; i++) + uasp_cleanup_one_stream(fu, &fu->stream[i]); + uasp_free_cmdreq(fu); +} + +static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req); + +static int uasp_prepare_r_request(struct usbg_cmd *cmd) +{ + struct se_cmd *se_cmd = &cmd->se_cmd; + struct f_uas *fu = cmd->fu; + struct usb_gadget *gadget = fuas_to_gadget(fu); + struct uas_stream *stream = cmd->stream; + + if (!gadget->sg_supported) { + cmd->data_buf = kmalloc(se_cmd->data_length, GFP_ATOMIC); + if (!cmd->data_buf) + return -ENOMEM; + + sg_copy_to_buffer(se_cmd->t_data_sg, + se_cmd->t_data_nents, + cmd->data_buf, + se_cmd->data_length); + + stream->req_in->buf = cmd->data_buf; + } else { + stream->req_in->buf = NULL; + stream->req_in->num_sgs = se_cmd->t_data_nents; + stream->req_in->sg = se_cmd->t_data_sg; + } + + stream->req_in->complete = uasp_status_data_cmpl; + stream->req_in->length = se_cmd->data_length; + stream->req_in->context = cmd; + + cmd->state = UASP_SEND_STATUS; + return 0; +} + +static void uasp_prepare_status(struct usbg_cmd *cmd) +{ + struct se_cmd *se_cmd = &cmd->se_cmd; + struct sense_iu *iu = &cmd->sense_iu; + struct uas_stream *stream = cmd->stream; + + cmd->state = UASP_QUEUE_COMMAND; + iu->iu_id = IU_ID_STATUS; + iu->tag = cpu_to_be16(cmd->tag); + + /* + * iu->status_qual = cpu_to_be16(STATUS QUALIFIER SAM-4. Where R U?); + */ + iu->len = cpu_to_be16(se_cmd->scsi_sense_length); + iu->status = se_cmd->scsi_status; + stream->req_status->context = cmd; + stream->req_status->length = se_cmd->scsi_sense_length + 16; + stream->req_status->buf = iu; + stream->req_status->complete = uasp_status_data_cmpl; +} + +static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req) +{ + struct usbg_cmd *cmd = req->context; + struct uas_stream *stream = cmd->stream; + struct f_uas *fu = cmd->fu; + int ret; + + if (req->status < 0) + goto cleanup; + + switch (cmd->state) { + case UASP_SEND_DATA: + ret = uasp_prepare_r_request(cmd); + if (ret) + goto cleanup; + ret = usb_ep_queue(fu->ep_in, stream->req_in, GFP_ATOMIC); + if (ret) + pr_err("%s(%d) => %d\n", __func__, __LINE__, ret); + break; + + case UASP_RECEIVE_DATA: + ret = usbg_prepare_w_request(cmd, stream->req_out); + if (ret) + goto cleanup; + ret = usb_ep_queue(fu->ep_out, stream->req_out, GFP_ATOMIC); + if (ret) + pr_err("%s(%d) => %d\n", __func__, __LINE__, ret); + break; + + case UASP_SEND_STATUS: + uasp_prepare_status(cmd); + ret = usb_ep_queue(fu->ep_status, stream->req_status, + GFP_ATOMIC); + if (ret) + pr_err("%s(%d) => %d\n", __func__, __LINE__, ret); + break; + + case UASP_QUEUE_COMMAND: + usbg_cleanup_cmd(cmd); + usb_ep_queue(fu->ep_cmd, fu->cmd.req, GFP_ATOMIC); + break; + + default: + BUG(); + } + return; + +cleanup: + usbg_cleanup_cmd(cmd); +} + +static int uasp_send_status_response(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct uas_stream *stream = cmd->stream; + struct sense_iu *iu = &cmd->sense_iu; + + iu->tag = cpu_to_be16(cmd->tag); + stream->req_status->complete = uasp_status_data_cmpl; + stream->req_status->context = cmd; + cmd->fu = fu; + uasp_prepare_status(cmd); + return usb_ep_queue(fu->ep_status, stream->req_status, GFP_ATOMIC); +} + +static int uasp_send_read_response(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct uas_stream *stream = cmd->stream; + struct sense_iu *iu = &cmd->sense_iu; + int ret; + + cmd->fu = fu; + + iu->tag = cpu_to_be16(cmd->tag); + if (fu->flags & USBG_USE_STREAMS) { + + ret = uasp_prepare_r_request(cmd); + if (ret) + goto out; + ret = usb_ep_queue(fu->ep_in, stream->req_in, GFP_ATOMIC); + if (ret) { + pr_err("%s(%d) => %d\n", __func__, __LINE__, ret); + kfree(cmd->data_buf); + cmd->data_buf = NULL; + } + + } else { + + iu->iu_id = IU_ID_READ_READY; + iu->tag = cpu_to_be16(cmd->tag); + + stream->req_status->complete = uasp_status_data_cmpl; + stream->req_status->context = cmd; + + cmd->state = UASP_SEND_DATA; + stream->req_status->buf = iu; + stream->req_status->length = sizeof(struct iu); + + ret = usb_ep_queue(fu->ep_status, stream->req_status, + GFP_ATOMIC); + if (ret) + pr_err("%s(%d) => %d\n", __func__, __LINE__, ret); + } +out: + return ret; +} + +static int uasp_send_write_request(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct se_cmd *se_cmd = &cmd->se_cmd; + struct uas_stream *stream = cmd->stream; + struct sense_iu *iu = &cmd->sense_iu; + int ret; + + init_completion(&cmd->write_complete); + cmd->fu = fu; + + iu->tag = cpu_to_be16(cmd->tag); + + if (fu->flags & USBG_USE_STREAMS) { + + ret = usbg_prepare_w_request(cmd, stream->req_out); + if (ret) + goto cleanup; + ret = usb_ep_queue(fu->ep_out, stream->req_out, GFP_ATOMIC); + if (ret) + pr_err("%s(%d)\n", __func__, __LINE__); + + } else { + + iu->iu_id = IU_ID_WRITE_READY; + iu->tag = cpu_to_be16(cmd->tag); + + stream->req_status->complete = uasp_status_data_cmpl; + stream->req_status->context = cmd; + + cmd->state = UASP_RECEIVE_DATA; + stream->req_status->buf = iu; + stream->req_status->length = sizeof(struct iu); + + ret = usb_ep_queue(fu->ep_status, stream->req_status, + GFP_ATOMIC); + if (ret) + pr_err("%s(%d)\n", __func__, __LINE__); + } + + wait_for_completion(&cmd->write_complete); + target_execute_cmd(se_cmd); +cleanup: + return ret; +} + +static int usbg_submit_command(struct f_uas *, void *, unsigned int); + +static void uasp_cmd_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_uas *fu = req->context; + int ret; + + if (req->status < 0) + return; + + ret = usbg_submit_command(fu, req->buf, req->actual); + /* + * Once we tune for performance enqueue the command req here again so + * we can receive a second command while we processing this one. Pay + * attention to properly sync STAUS endpoint with DATA IN + OUT so you + * don't break HS. + */ + if (!ret) + return; + usb_ep_queue(fu->ep_cmd, fu->cmd.req, GFP_ATOMIC); +} + +static int uasp_alloc_stream_res(struct f_uas *fu, struct uas_stream *stream) +{ + stream->req_in = usb_ep_alloc_request(fu->ep_in, GFP_KERNEL); + if (!stream->req_in) + goto out; + + stream->req_out = usb_ep_alloc_request(fu->ep_out, GFP_KERNEL); + if (!stream->req_out) + goto err_out; + + stream->req_status = usb_ep_alloc_request(fu->ep_status, GFP_KERNEL); + if (!stream->req_status) + goto err_sts; + + return 0; +err_sts: + usb_ep_free_request(fu->ep_status, stream->req_status); + stream->req_status = NULL; +err_out: + usb_ep_free_request(fu->ep_out, stream->req_out); + stream->req_out = NULL; +out: + return -ENOMEM; +} + +static int uasp_alloc_cmd(struct f_uas *fu) +{ + fu->cmd.req = usb_ep_alloc_request(fu->ep_cmd, GFP_KERNEL); + if (!fu->cmd.req) + goto err; + + fu->cmd.buf = kmalloc(fu->ep_cmd->maxpacket, GFP_KERNEL); + if (!fu->cmd.buf) + goto err_buf; + + fu->cmd.req->complete = uasp_cmd_complete; + fu->cmd.req->buf = fu->cmd.buf; + fu->cmd.req->length = fu->ep_cmd->maxpacket; + fu->cmd.req->context = fu; + return 0; + +err_buf: + usb_ep_free_request(fu->ep_cmd, fu->cmd.req); +err: + return -ENOMEM; +} + +static void uasp_setup_stream_res(struct f_uas *fu, int max_streams) +{ + int i; + + for (i = 0; i < max_streams; i++) { + struct uas_stream *s = &fu->stream[i]; + + s->req_in->stream_id = i + 1; + s->req_out->stream_id = i + 1; + s->req_status->stream_id = i + 1; + } +} + +static int uasp_prepare_reqs(struct f_uas *fu) +{ + int ret; + int i; + int max_streams; + + if (fu->flags & USBG_USE_STREAMS) + max_streams = UASP_SS_EP_COMP_NUM_STREAMS; + else + max_streams = 1; + + for (i = 0; i < max_streams; i++) { + ret = uasp_alloc_stream_res(fu, &fu->stream[i]); + if (ret) + goto err_cleanup; + } + + ret = uasp_alloc_cmd(fu); + if (ret) + goto err_free_stream; + uasp_setup_stream_res(fu, max_streams); + + ret = usb_ep_queue(fu->ep_cmd, fu->cmd.req, GFP_ATOMIC); + if (ret) + goto err_free_stream; + + return 0; + +err_free_stream: + uasp_free_cmdreq(fu); + +err_cleanup: + if (i) { + do { + uasp_cleanup_one_stream(fu, &fu->stream[i - 1]); + i--; + } while (i); + } + pr_err("UASP: endpoint setup failed\n"); + return ret; +} + +static void uasp_set_alt(struct f_uas *fu) +{ + struct usb_function *f = &fu->function; + struct usb_gadget *gadget = f->config->cdev->gadget; + int ret; + + fu->flags = USBG_IS_UAS; + + if (gadget->speed == USB_SPEED_SUPER) + fu->flags |= USBG_USE_STREAMS; + + config_ep_by_speed(gadget, f, fu->ep_in); + ret = usb_ep_enable(fu->ep_in); + if (ret) + goto err_b_in; + + config_ep_by_speed(gadget, f, fu->ep_out); + ret = usb_ep_enable(fu->ep_out); + if (ret) + goto err_b_out; + + config_ep_by_speed(gadget, f, fu->ep_cmd); + ret = usb_ep_enable(fu->ep_cmd); + if (ret) + goto err_cmd; + config_ep_by_speed(gadget, f, fu->ep_status); + ret = usb_ep_enable(fu->ep_status); + if (ret) + goto err_status; + + ret = uasp_prepare_reqs(fu); + if (ret) + goto err_wq; + fu->flags |= USBG_ENABLED; + + pr_info("Using the UAS protocol\n"); + return; +err_wq: + usb_ep_disable(fu->ep_status); +err_status: + usb_ep_disable(fu->ep_cmd); +err_cmd: + usb_ep_disable(fu->ep_out); +err_b_out: + usb_ep_disable(fu->ep_in); +err_b_in: + fu->flags = 0; +} + +static int get_cmd_dir(const unsigned char *cdb) +{ + int ret; + + switch (cdb[0]) { + case READ_6: + case READ_10: + case READ_12: + case READ_16: + case INQUIRY: + case MODE_SENSE: + case MODE_SENSE_10: + case SERVICE_ACTION_IN: + case MAINTENANCE_IN: + case PERSISTENT_RESERVE_IN: + case SECURITY_PROTOCOL_IN: + case ACCESS_CONTROL_IN: + case REPORT_LUNS: + case READ_BLOCK_LIMITS: + case READ_POSITION: + case READ_CAPACITY: + case READ_TOC: + case READ_FORMAT_CAPACITIES: + case REQUEST_SENSE: + ret = DMA_FROM_DEVICE; + break; + + case WRITE_6: + case WRITE_10: + case WRITE_12: + case WRITE_16: + case MODE_SELECT: + case MODE_SELECT_10: + case WRITE_VERIFY: + case WRITE_VERIFY_12: + case PERSISTENT_RESERVE_OUT: + case MAINTENANCE_OUT: + case SECURITY_PROTOCOL_OUT: + case ACCESS_CONTROL_OUT: + ret = DMA_TO_DEVICE; + break; + case ALLOW_MEDIUM_REMOVAL: + case TEST_UNIT_READY: + case SYNCHRONIZE_CACHE: + case START_STOP: + case ERASE: + case REZERO_UNIT: + case SEEK_10: + case SPACE: + case VERIFY: + case WRITE_FILEMARKS: + ret = DMA_NONE; + break; + default: + pr_warn("target: Unknown data direction for SCSI Opcode " + "0x%02x\n", cdb[0]); + ret = -EINVAL; + } + return ret; +} + +static void usbg_data_write_cmpl(struct usb_ep *ep, struct usb_request *req) +{ + struct usbg_cmd *cmd = req->context; + struct se_cmd *se_cmd = &cmd->se_cmd; + + if (req->status < 0) { + pr_err("%s() state %d transfer failed\n", __func__, cmd->state); + goto cleanup; + } + + if (req->num_sgs == 0) { + sg_copy_from_buffer(se_cmd->t_data_sg, + se_cmd->t_data_nents, + cmd->data_buf, + se_cmd->data_length); + } + + complete(&cmd->write_complete); + return; + +cleanup: + usbg_cleanup_cmd(cmd); +} + +static int usbg_prepare_w_request(struct usbg_cmd *cmd, struct usb_request *req) +{ + struct se_cmd *se_cmd = &cmd->se_cmd; + struct f_uas *fu = cmd->fu; + struct usb_gadget *gadget = fuas_to_gadget(fu); + + if (!gadget->sg_supported) { + cmd->data_buf = kmalloc(se_cmd->data_length, GFP_ATOMIC); + if (!cmd->data_buf) + return -ENOMEM; + + req->buf = cmd->data_buf; + } else { + req->buf = NULL; + req->num_sgs = se_cmd->t_data_nents; + req->sg = se_cmd->t_data_sg; + } + + req->complete = usbg_data_write_cmpl; + req->length = se_cmd->data_length; + req->context = cmd; + return 0; +} + +static int usbg_send_status_response(struct se_cmd *se_cmd) +{ + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, + se_cmd); + struct f_uas *fu = cmd->fu; + + if (fu->flags & USBG_IS_BOT) + return bot_send_status_response(cmd); + else + return uasp_send_status_response(cmd); +} + +static int usbg_send_write_request(struct se_cmd *se_cmd) +{ + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, + se_cmd); + struct f_uas *fu = cmd->fu; + + if (fu->flags & USBG_IS_BOT) + return bot_send_write_request(cmd); + else + return uasp_send_write_request(cmd); +} + +static int usbg_send_read_response(struct se_cmd *se_cmd) +{ + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, + se_cmd); + struct f_uas *fu = cmd->fu; + + if (fu->flags & USBG_IS_BOT) + return bot_send_read_response(cmd); + else + return uasp_send_read_response(cmd); +} + +static void usbg_cmd_work(struct work_struct *work) +{ + struct usbg_cmd *cmd = container_of(work, struct usbg_cmd, work); + struct se_cmd *se_cmd; + struct tcm_usbg_nexus *tv_nexus; + struct usbg_tpg *tpg; + int dir; + + se_cmd = &cmd->se_cmd; + tpg = cmd->fu->tpg; + tv_nexus = tpg->tpg_nexus; + dir = get_cmd_dir(cmd->cmd_buf); + if (dir < 0) { + transport_init_se_cmd(se_cmd, + tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo, + tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE, + cmd->prio_attr, cmd->sense_iu.sense); + goto out; + } + + if (target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, + cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, + 0, cmd->prio_attr, dir, TARGET_SCF_UNKNOWN_SIZE) < 0) + goto out; + + return; + +out: + transport_send_check_condition_and_sense(se_cmd, + TCM_UNSUPPORTED_SCSI_OPCODE, 1); + usbg_cleanup_cmd(cmd); +} + +static int usbg_submit_command(struct f_uas *fu, + void *cmdbuf, unsigned int len) +{ + struct command_iu *cmd_iu = cmdbuf; + struct usbg_cmd *cmd; + struct usbg_tpg *tpg; + struct se_cmd *se_cmd; + struct tcm_usbg_nexus *tv_nexus; + u32 cmd_len; + int ret; + + if (cmd_iu->iu_id != IU_ID_COMMAND) { + pr_err("Unsupported type %d\n", cmd_iu->iu_id); + return -EINVAL; + } + + cmd = kzalloc(sizeof *cmd, GFP_ATOMIC); + if (!cmd) + return -ENOMEM; + + cmd->fu = fu; + + /* XXX until I figure out why I can't free in on complete */ + kref_init(&cmd->ref); + kref_get(&cmd->ref); + + tpg = fu->tpg; + cmd_len = (cmd_iu->len & ~0x3) + 16; + if (cmd_len > USBG_MAX_CMD) + goto err; + + memcpy(cmd->cmd_buf, cmd_iu->cdb, cmd_len); + + cmd->tag = be16_to_cpup(&cmd_iu->tag); + if (fu->flags & USBG_USE_STREAMS) { + if (cmd->tag > UASP_SS_EP_COMP_NUM_STREAMS) + goto err; + if (!cmd->tag) + cmd->stream = &fu->stream[0]; + else + cmd->stream = &fu->stream[cmd->tag - 1]; + } else { + cmd->stream = &fu->stream[0]; + } + + tv_nexus = tpg->tpg_nexus; + if (!tv_nexus) { + pr_err("Missing nexus, ignoring command\n"); + goto err; + } + + switch (cmd_iu->prio_attr & 0x7) { + case UAS_HEAD_TAG: + cmd->prio_attr = MSG_HEAD_TAG; + break; + case UAS_ORDERED_TAG: + cmd->prio_attr = MSG_ORDERED_TAG; + break; + case UAS_ACA: + cmd->prio_attr = MSG_ACA_TAG; + break; + default: + pr_debug_once("Unsupported prio_attr: %02x.\n", + cmd_iu->prio_attr); + case UAS_SIMPLE_TAG: + cmd->prio_attr = MSG_SIMPLE_TAG; + break; + } + + se_cmd = &cmd->se_cmd; + cmd->unpacked_lun = scsilun_to_int(&cmd_iu->lun); + + INIT_WORK(&cmd->work, usbg_cmd_work); + ret = queue_work(tpg->workqueue, &cmd->work); + if (ret < 0) + goto err; + + return 0; +err: + kfree(cmd); + return -EINVAL; +} + +static void bot_cmd_work(struct work_struct *work) +{ + struct usbg_cmd *cmd = container_of(work, struct usbg_cmd, work); + struct se_cmd *se_cmd; + struct tcm_usbg_nexus *tv_nexus; + struct usbg_tpg *tpg; + int dir; + + se_cmd = &cmd->se_cmd; + tpg = cmd->fu->tpg; + tv_nexus = tpg->tpg_nexus; + dir = get_cmd_dir(cmd->cmd_buf); + if (dir < 0) { + transport_init_se_cmd(se_cmd, + tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo, + tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE, + cmd->prio_attr, cmd->sense_iu.sense); + goto out; + } + + if (target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, + cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, + cmd->data_len, cmd->prio_attr, dir, 0) < 0) + goto out; + + return; + +out: + transport_send_check_condition_and_sense(se_cmd, + TCM_UNSUPPORTED_SCSI_OPCODE, 1); + usbg_cleanup_cmd(cmd); +} + +static int bot_submit_command(struct f_uas *fu, + void *cmdbuf, unsigned int len) +{ + struct bulk_cb_wrap *cbw = cmdbuf; + struct usbg_cmd *cmd; + struct usbg_tpg *tpg; + struct se_cmd *se_cmd; + struct tcm_usbg_nexus *tv_nexus; + u32 cmd_len; + int ret; + + if (cbw->Signature != cpu_to_le32(US_BULK_CB_SIGN)) { + pr_err("Wrong signature on CBW\n"); + return -EINVAL; + } + if (len != 31) { + pr_err("Wrong length for CBW\n"); + return -EINVAL; + } + + cmd_len = cbw->Length; + if (cmd_len < 1 || cmd_len > 16) + return -EINVAL; + + cmd = kzalloc(sizeof *cmd, GFP_ATOMIC); + if (!cmd) + return -ENOMEM; + + cmd->fu = fu; + + /* XXX until I figure out why I can't free in on complete */ + kref_init(&cmd->ref); + kref_get(&cmd->ref); + + tpg = fu->tpg; + + memcpy(cmd->cmd_buf, cbw->CDB, cmd_len); + + cmd->bot_tag = cbw->Tag; + + tv_nexus = tpg->tpg_nexus; + if (!tv_nexus) { + pr_err("Missing nexus, ignoring command\n"); + goto err; + } + + cmd->prio_attr = MSG_SIMPLE_TAG; + se_cmd = &cmd->se_cmd; + cmd->unpacked_lun = cbw->Lun; + cmd->is_read = cbw->Flags & US_BULK_FLAG_IN ? 1 : 0; + cmd->data_len = le32_to_cpu(cbw->DataTransferLength); + + INIT_WORK(&cmd->work, bot_cmd_work); + ret = queue_work(tpg->workqueue, &cmd->work); + if (ret < 0) + goto err; + + return 0; +err: + kfree(cmd); + return -EINVAL; +} + +/* Start fabric.c code */ + +static int usbg_check_true(struct se_portal_group *se_tpg) +{ + return 1; +} + +static int usbg_check_false(struct se_portal_group *se_tpg) +{ + return 0; +} + +static char *usbg_get_fabric_name(void) +{ + return "usb_gadget"; +} + +static u8 usbg_get_fabric_proto_ident(struct se_portal_group *se_tpg) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + struct usbg_tport *tport = tpg->tport; + u8 proto_id; + + switch (tport->tport_proto_id) { + case SCSI_PROTOCOL_SAS: + default: + proto_id = sas_get_fabric_proto_ident(se_tpg); + break; + } + + return proto_id; +} + +static char *usbg_get_fabric_wwn(struct se_portal_group *se_tpg) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + struct usbg_tport *tport = tpg->tport; + + return &tport->tport_name[0]; +} + +static u16 usbg_get_tag(struct se_portal_group *se_tpg) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + return tpg->tport_tpgt; +} + +static u32 usbg_get_default_depth(struct se_portal_group *se_tpg) +{ + return 1; +} + +static u32 usbg_get_pr_transport_id( + struct se_portal_group *se_tpg, + struct se_node_acl *se_nacl, + struct t10_pr_registration *pr_reg, + int *format_code, + unsigned char *buf) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + struct usbg_tport *tport = tpg->tport; + int ret = 0; + + switch (tport->tport_proto_id) { + case SCSI_PROTOCOL_SAS: + default: + ret = sas_get_pr_transport_id(se_tpg, se_nacl, pr_reg, + format_code, buf); + break; + } + + return ret; +} + +static u32 usbg_get_pr_transport_id_len( + struct se_portal_group *se_tpg, + struct se_node_acl *se_nacl, + struct t10_pr_registration *pr_reg, + int *format_code) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + struct usbg_tport *tport = tpg->tport; + int ret = 0; + + switch (tport->tport_proto_id) { + case SCSI_PROTOCOL_SAS: + default: + ret = sas_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, + format_code); + break; + } + + return ret; +} + +static char *usbg_parse_pr_out_transport_id( + struct se_portal_group *se_tpg, + const char *buf, + u32 *out_tid_len, + char **port_nexus_ptr) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + struct usbg_tport *tport = tpg->tport; + char *tid = NULL; + + switch (tport->tport_proto_id) { + case SCSI_PROTOCOL_SAS: + default: + tid = sas_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, + port_nexus_ptr); + } + + return tid; +} + +static struct se_node_acl *usbg_alloc_fabric_acl(struct se_portal_group *se_tpg) +{ + struct usbg_nacl *nacl; + + nacl = kzalloc(sizeof(struct usbg_nacl), GFP_KERNEL); + if (!nacl) + return NULL; + + return &nacl->se_node_acl; +} + +static void usbg_release_fabric_acl( + struct se_portal_group *se_tpg, + struct se_node_acl *se_nacl) +{ + struct usbg_nacl *nacl = container_of(se_nacl, + struct usbg_nacl, se_node_acl); + kfree(nacl); +} + +static u32 usbg_tpg_get_inst_index(struct se_portal_group *se_tpg) +{ + return 1; +} + +static void usbg_cmd_release(struct kref *ref) +{ + struct usbg_cmd *cmd = container_of(ref, struct usbg_cmd, + ref); + + transport_generic_free_cmd(&cmd->se_cmd, 0); +} + +static void usbg_release_cmd(struct se_cmd *se_cmd) +{ + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, + se_cmd); + kfree(cmd->data_buf); + kfree(cmd); + return; +} + +static int usbg_shutdown_session(struct se_session *se_sess) +{ + return 0; +} + +static void usbg_close_session(struct se_session *se_sess) +{ + return; +} + +static u32 usbg_sess_get_index(struct se_session *se_sess) +{ + return 0; +} + +/* + * XXX Error recovery: return != 0 if we expect writes. Dunno when that could be + */ +static int usbg_write_pending_status(struct se_cmd *se_cmd) +{ + return 0; +} + +static void usbg_set_default_node_attrs(struct se_node_acl *nacl) +{ + return; +} + +static u32 usbg_get_task_tag(struct se_cmd *se_cmd) +{ + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, + se_cmd); + struct f_uas *fu = cmd->fu; + + if (fu->flags & USBG_IS_BOT) + return le32_to_cpu(cmd->bot_tag); + else + return cmd->tag; +} + +static int usbg_get_cmd_state(struct se_cmd *se_cmd) +{ + return 0; +} + +static void usbg_queue_tm_rsp(struct se_cmd *se_cmd) +{ +} + +static void usbg_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + +static const char *usbg_check_wwn(const char *name) +{ + const char *n; + unsigned int len; + + n = strstr(name, "naa."); + if (!n) + return NULL; + n += 4; + len = strlen(n); + if (len == 0 || len > USBG_NAMELEN - 1) + return NULL; + return n; +} + +static struct se_node_acl *usbg_make_nodeacl( + struct se_portal_group *se_tpg, + struct config_group *group, + const char *name) +{ + struct se_node_acl *se_nacl, *se_nacl_new; + struct usbg_nacl *nacl; + u64 wwpn = 0; + u32 nexus_depth; + const char *wnn_name; + + wnn_name = usbg_check_wwn(name); + if (!wnn_name) + return ERR_PTR(-EINVAL); + se_nacl_new = usbg_alloc_fabric_acl(se_tpg); + if (!(se_nacl_new)) + return ERR_PTR(-ENOMEM); + + nexus_depth = 1; + /* + * se_nacl_new may be released by core_tpg_add_initiator_node_acl() + * when converting a NodeACL from demo mode -> explict + */ + se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, + name, nexus_depth); + if (IS_ERR(se_nacl)) { + usbg_release_fabric_acl(se_tpg, se_nacl_new); + return se_nacl; + } + /* + * Locate our struct usbg_nacl and set the FC Nport WWPN + */ + nacl = container_of(se_nacl, struct usbg_nacl, se_node_acl); + nacl->iport_wwpn = wwpn; + snprintf(nacl->iport_name, sizeof(nacl->iport_name), "%s", name); + return se_nacl; +} + +static void usbg_drop_nodeacl(struct se_node_acl *se_acl) +{ + struct usbg_nacl *nacl = container_of(se_acl, + struct usbg_nacl, se_node_acl); + core_tpg_del_initiator_node_acl(se_acl->se_tpg, se_acl, 1); + kfree(nacl); +} + +struct usbg_tpg *the_only_tpg_I_currently_have; + +static struct se_portal_group *usbg_make_tpg( + struct se_wwn *wwn, + struct config_group *group, + const char *name) +{ + struct usbg_tport *tport = container_of(wwn, struct usbg_tport, + tport_wwn); + struct usbg_tpg *tpg; + unsigned long tpgt; + int ret; + + if (strstr(name, "tpgt_") != name) + return ERR_PTR(-EINVAL); + if (kstrtoul(name + 5, 0, &tpgt) || tpgt > UINT_MAX) + return ERR_PTR(-EINVAL); + if (the_only_tpg_I_currently_have) { + pr_err("Until the gadget framework can't handle multiple\n"); + pr_err("gadgets, you can't do this here.\n"); + return ERR_PTR(-EBUSY); + } + + tpg = kzalloc(sizeof(struct usbg_tpg), GFP_KERNEL); + if (!tpg) + return ERR_PTR(-ENOMEM); + mutex_init(&tpg->tpg_mutex); + atomic_set(&tpg->tpg_port_count, 0); + tpg->workqueue = alloc_workqueue("tcm_usb_gadget", 0, 1); + if (!tpg->workqueue) { + kfree(tpg); + return NULL; + } + + tpg->tport = tport; + tpg->tport_tpgt = tpgt; + + ret = core_tpg_register(&usbg_fabric_configfs->tf_ops, wwn, + &tpg->se_tpg, tpg, + TRANSPORT_TPG_TYPE_NORMAL); + if (ret < 0) { + destroy_workqueue(tpg->workqueue); + kfree(tpg); + return NULL; + } + the_only_tpg_I_currently_have = tpg; + return &tpg->se_tpg; +} + +static void usbg_drop_tpg(struct se_portal_group *se_tpg) +{ + struct usbg_tpg *tpg = container_of(se_tpg, + struct usbg_tpg, se_tpg); + + core_tpg_deregister(se_tpg); + destroy_workqueue(tpg->workqueue); + kfree(tpg); + the_only_tpg_I_currently_have = NULL; +} + +static struct se_wwn *usbg_make_tport( + struct target_fabric_configfs *tf, + struct config_group *group, + const char *name) +{ + struct usbg_tport *tport; + const char *wnn_name; + u64 wwpn = 0; + + wnn_name = usbg_check_wwn(name); + if (!wnn_name) + return ERR_PTR(-EINVAL); + + tport = kzalloc(sizeof(struct usbg_tport), GFP_KERNEL); + if (!(tport)) + return ERR_PTR(-ENOMEM); + tport->tport_wwpn = wwpn; + snprintf(tport->tport_name, sizeof(tport->tport_name), "%s", wnn_name); + return &tport->tport_wwn; +} + +static void usbg_drop_tport(struct se_wwn *wwn) +{ + struct usbg_tport *tport = container_of(wwn, + struct usbg_tport, tport_wwn); + kfree(tport); +} + +/* + * If somebody feels like dropping the version property, go ahead. + */ +static ssize_t usbg_wwn_show_attr_version( + struct target_fabric_configfs *tf, + char *page) +{ + return sprintf(page, "usb-gadget fabric module\n"); +} +TF_WWN_ATTR_RO(usbg, version); + +static struct configfs_attribute *usbg_wwn_attrs[] = { + &usbg_wwn_version.attr, + NULL, +}; + +static ssize_t tcm_usbg_tpg_show_enable( + struct se_portal_group *se_tpg, + char *page) +{ + struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); + + return snprintf(page, PAGE_SIZE, "%u\n", tpg->gadget_connect); +} + +static int usbg_attach(struct usbg_tpg *); +static void usbg_detach(struct usbg_tpg *); + +static ssize_t tcm_usbg_tpg_store_enable( + struct se_portal_group *se_tpg, + const char *page, + size_t count) +{ + struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); + unsigned long op; + ssize_t ret; + + ret = kstrtoul(page, 0, &op); + if (ret < 0) + return -EINVAL; + if (op > 1) + return -EINVAL; + + if (op && tpg->gadget_connect) + goto out; + if (!op && !tpg->gadget_connect) + goto out; + + if (op) { + ret = usbg_attach(tpg); + if (ret) + goto out; + } else { + usbg_detach(tpg); + } + tpg->gadget_connect = op; +out: + return count; +} +TF_TPG_BASE_ATTR(tcm_usbg, enable, S_IRUGO | S_IWUSR); + +static ssize_t tcm_usbg_tpg_show_nexus( + struct se_portal_group *se_tpg, + char *page) +{ + struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); + struct tcm_usbg_nexus *tv_nexus; + ssize_t ret; + + mutex_lock(&tpg->tpg_mutex); + tv_nexus = tpg->tpg_nexus; + if (!tv_nexus) { + ret = -ENODEV; + goto out; + } + ret = snprintf(page, PAGE_SIZE, "%s\n", + tv_nexus->tvn_se_sess->se_node_acl->initiatorname); +out: + mutex_unlock(&tpg->tpg_mutex); + return ret; +} + +static int tcm_usbg_make_nexus(struct usbg_tpg *tpg, char *name) +{ + struct se_portal_group *se_tpg; + struct tcm_usbg_nexus *tv_nexus; + int ret; + + mutex_lock(&tpg->tpg_mutex); + if (tpg->tpg_nexus) { + ret = -EEXIST; + pr_debug("tpg->tpg_nexus already exists\n"); + goto err_unlock; + } + se_tpg = &tpg->se_tpg; + + ret = -ENOMEM; + tv_nexus = kzalloc(sizeof(*tv_nexus), GFP_KERNEL); + if (!tv_nexus) + goto err_unlock; + tv_nexus->tvn_se_sess = transport_init_session(TARGET_PROT_NORMAL); + if (IS_ERR(tv_nexus->tvn_se_sess)) + goto err_free; + + /* + * Since we are running in 'demo mode' this call with generate a + * struct se_node_acl for the tcm_vhost struct se_portal_group with + * the SCSI Initiator port name of the passed configfs group 'name'. + */ + tv_nexus->tvn_se_sess->se_node_acl = core_tpg_check_initiator_node_acl( + se_tpg, name); + if (!tv_nexus->tvn_se_sess->se_node_acl) { + pr_debug("core_tpg_check_initiator_node_acl() failed" + " for %s\n", name); + goto err_session; + } + /* + * Now register the TCM vHost virtual I_T Nexus as active with the + * call to __transport_register_session() + */ + __transport_register_session(se_tpg, tv_nexus->tvn_se_sess->se_node_acl, + tv_nexus->tvn_se_sess, tv_nexus); + tpg->tpg_nexus = tv_nexus; + mutex_unlock(&tpg->tpg_mutex); + return 0; + +err_session: + transport_free_session(tv_nexus->tvn_se_sess); +err_free: + kfree(tv_nexus); +err_unlock: + mutex_unlock(&tpg->tpg_mutex); + return ret; +} + +static int tcm_usbg_drop_nexus(struct usbg_tpg *tpg) +{ + struct se_session *se_sess; + struct tcm_usbg_nexus *tv_nexus; + int ret = -ENODEV; + + mutex_lock(&tpg->tpg_mutex); + tv_nexus = tpg->tpg_nexus; + if (!tv_nexus) + goto out; + + se_sess = tv_nexus->tvn_se_sess; + if (!se_sess) + goto out; + + if (atomic_read(&tpg->tpg_port_count)) { + ret = -EPERM; + pr_err("Unable to remove Host I_T Nexus with" + " active TPG port count: %d\n", + atomic_read(&tpg->tpg_port_count)); + goto out; + } + + pr_debug("Removing I_T Nexus to Initiator Port: %s\n", + tv_nexus->tvn_se_sess->se_node_acl->initiatorname); + /* + * Release the SCSI I_T Nexus to the emulated vHost Target Port + */ + transport_deregister_session(tv_nexus->tvn_se_sess); + tpg->tpg_nexus = NULL; + + kfree(tv_nexus); + ret = 0; +out: + mutex_unlock(&tpg->tpg_mutex); + return ret; +} + +static ssize_t tcm_usbg_tpg_store_nexus( + struct se_portal_group *se_tpg, + const char *page, + size_t count) +{ + struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); + unsigned char i_port[USBG_NAMELEN], *ptr; + int ret; + + if (!strncmp(page, "NULL", 4)) { + ret = tcm_usbg_drop_nexus(tpg); + return (!ret) ? count : ret; + } + if (strlen(page) >= USBG_NAMELEN) { + pr_err("Emulated NAA Sas Address: %s, exceeds" + " max: %d\n", page, USBG_NAMELEN); + return -EINVAL; + } + snprintf(i_port, USBG_NAMELEN, "%s", page); + + ptr = strstr(i_port, "naa."); + if (!ptr) { + pr_err("Missing 'naa.' prefix\n"); + return -EINVAL; + } + + if (i_port[strlen(i_port) - 1] == '\n') + i_port[strlen(i_port) - 1] = '\0'; + + ret = tcm_usbg_make_nexus(tpg, &i_port[4]); + if (ret < 0) + return ret; + return count; +} +TF_TPG_BASE_ATTR(tcm_usbg, nexus, S_IRUGO | S_IWUSR); + +static struct configfs_attribute *usbg_base_attrs[] = { + &tcm_usbg_tpg_enable.attr, + &tcm_usbg_tpg_nexus.attr, + NULL, +}; + +static int usbg_port_link(struct se_portal_group *se_tpg, struct se_lun *lun) +{ + struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); + + atomic_inc(&tpg->tpg_port_count); + smp_mb__after_atomic(); + return 0; +} + +static void usbg_port_unlink(struct se_portal_group *se_tpg, + struct se_lun *se_lun) +{ + struct usbg_tpg *tpg = container_of(se_tpg, struct usbg_tpg, se_tpg); + + atomic_dec(&tpg->tpg_port_count); + smp_mb__after_atomic(); +} + +static int usbg_check_stop_free(struct se_cmd *se_cmd) +{ + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, + se_cmd); + + kref_put(&cmd->ref, usbg_cmd_release); + return 1; +} + +static struct target_core_fabric_ops usbg_ops = { + .get_fabric_name = usbg_get_fabric_name, + .get_fabric_proto_ident = usbg_get_fabric_proto_ident, + .tpg_get_wwn = usbg_get_fabric_wwn, + .tpg_get_tag = usbg_get_tag, + .tpg_get_default_depth = usbg_get_default_depth, + .tpg_get_pr_transport_id = usbg_get_pr_transport_id, + .tpg_get_pr_transport_id_len = usbg_get_pr_transport_id_len, + .tpg_parse_pr_out_transport_id = usbg_parse_pr_out_transport_id, + .tpg_check_demo_mode = usbg_check_true, + .tpg_check_demo_mode_cache = usbg_check_false, + .tpg_check_demo_mode_write_protect = usbg_check_false, + .tpg_check_prod_mode_write_protect = usbg_check_false, + .tpg_alloc_fabric_acl = usbg_alloc_fabric_acl, + .tpg_release_fabric_acl = usbg_release_fabric_acl, + .tpg_get_inst_index = usbg_tpg_get_inst_index, + .release_cmd = usbg_release_cmd, + .shutdown_session = usbg_shutdown_session, + .close_session = usbg_close_session, + .sess_get_index = usbg_sess_get_index, + .sess_get_initiator_sid = NULL, + .write_pending = usbg_send_write_request, + .write_pending_status = usbg_write_pending_status, + .set_default_node_attributes = usbg_set_default_node_attrs, + .get_task_tag = usbg_get_task_tag, + .get_cmd_state = usbg_get_cmd_state, + .queue_data_in = usbg_send_read_response, + .queue_status = usbg_send_status_response, + .queue_tm_rsp = usbg_queue_tm_rsp, + .aborted_task = usbg_aborted_task, + .check_stop_free = usbg_check_stop_free, + + .fabric_make_wwn = usbg_make_tport, + .fabric_drop_wwn = usbg_drop_tport, + .fabric_make_tpg = usbg_make_tpg, + .fabric_drop_tpg = usbg_drop_tpg, + .fabric_post_link = usbg_port_link, + .fabric_pre_unlink = usbg_port_unlink, + .fabric_make_np = NULL, + .fabric_drop_np = NULL, + .fabric_make_nodeacl = usbg_make_nodeacl, + .fabric_drop_nodeacl = usbg_drop_nodeacl, +}; + +static int usbg_register_configfs(void) +{ + struct target_fabric_configfs *fabric; + int ret; + + fabric = target_fabric_configfs_init(THIS_MODULE, "usb_gadget"); + if (IS_ERR(fabric)) { + printk(KERN_ERR "target_fabric_configfs_init() failed\n"); + return PTR_ERR(fabric); + } + + fabric->tf_ops = usbg_ops; + fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = usbg_wwn_attrs; + fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = usbg_base_attrs; + fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; + fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; + fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; + fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; + fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; + fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; + fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; + ret = target_fabric_configfs_register(fabric); + if (ret < 0) { + printk(KERN_ERR "target_fabric_configfs_register() failed" + " for usb-gadget\n"); + return ret; + } + usbg_fabric_configfs = fabric; + return 0; +}; + +static void usbg_deregister_configfs(void) +{ + if (!(usbg_fabric_configfs)) + return; + + target_fabric_configfs_deregister(usbg_fabric_configfs); + usbg_fabric_configfs = NULL; +}; + +/* Start gadget.c code */ + +static struct usb_interface_descriptor bot_intf_desc = { + .bLength = sizeof(bot_intf_desc), + .bDescriptorType = USB_DT_INTERFACE, + .bNumEndpoints = 2, + .bAlternateSetting = USB_G_ALT_INT_BBB, + .bInterfaceClass = USB_CLASS_MASS_STORAGE, + .bInterfaceSubClass = USB_SC_SCSI, + .bInterfaceProtocol = USB_PR_BULK, +}; + +static struct usb_interface_descriptor uasp_intf_desc = { + .bLength = sizeof(uasp_intf_desc), + .bDescriptorType = USB_DT_INTERFACE, + .bNumEndpoints = 4, + .bAlternateSetting = USB_G_ALT_INT_UAS, + .bInterfaceClass = USB_CLASS_MASS_STORAGE, + .bInterfaceSubClass = USB_SC_SCSI, + .bInterfaceProtocol = USB_PR_UAS, +}; + +static struct usb_endpoint_descriptor uasp_bi_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor uasp_fs_bi_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_pipe_usage_descriptor uasp_bi_pipe_desc = { + .bLength = sizeof(uasp_bi_pipe_desc), + .bDescriptorType = USB_DT_PIPE_USAGE, + .bPipeID = DATA_IN_PIPE_ID, +}; + +static struct usb_endpoint_descriptor uasp_ss_bi_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor uasp_bi_ep_comp_desc = { + .bLength = sizeof(uasp_bi_ep_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, + .bmAttributes = UASP_SS_EP_COMP_LOG_STREAMS, + .wBytesPerInterval = 0, +}; + +static struct usb_ss_ep_comp_descriptor bot_bi_ep_comp_desc = { + .bLength = sizeof(bot_bi_ep_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, +}; + +static struct usb_endpoint_descriptor uasp_bo_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor uasp_fs_bo_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_pipe_usage_descriptor uasp_bo_pipe_desc = { + .bLength = sizeof(uasp_bo_pipe_desc), + .bDescriptorType = USB_DT_PIPE_USAGE, + .bPipeID = DATA_OUT_PIPE_ID, +}; + +static struct usb_endpoint_descriptor uasp_ss_bo_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(0x400), +}; + +static struct usb_ss_ep_comp_descriptor uasp_bo_ep_comp_desc = { + .bLength = sizeof(uasp_bo_ep_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bmAttributes = UASP_SS_EP_COMP_LOG_STREAMS, +}; + +static struct usb_ss_ep_comp_descriptor bot_bo_ep_comp_desc = { + .bLength = sizeof(bot_bo_ep_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_endpoint_descriptor uasp_status_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor uasp_fs_status_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_pipe_usage_descriptor uasp_status_pipe_desc = { + .bLength = sizeof(uasp_status_pipe_desc), + .bDescriptorType = USB_DT_PIPE_USAGE, + .bPipeID = STATUS_PIPE_ID, +}; + +static struct usb_endpoint_descriptor uasp_ss_status_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor uasp_status_in_ep_comp_desc = { + .bLength = sizeof(uasp_status_in_ep_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bmAttributes = UASP_SS_EP_COMP_LOG_STREAMS, +}; + +static struct usb_endpoint_descriptor uasp_cmd_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor uasp_fs_cmd_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_pipe_usage_descriptor uasp_cmd_pipe_desc = { + .bLength = sizeof(uasp_cmd_pipe_desc), + .bDescriptorType = USB_DT_PIPE_USAGE, + .bPipeID = CMD_PIPE_ID, +}; + +static struct usb_endpoint_descriptor uasp_ss_cmd_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor uasp_cmd_comp_desc = { + .bLength = sizeof(uasp_cmd_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_descriptor_header *uasp_fs_function_desc[] = { + (struct usb_descriptor_header *) &bot_intf_desc, + (struct usb_descriptor_header *) &uasp_fs_bi_desc, + (struct usb_descriptor_header *) &uasp_fs_bo_desc, + + (struct usb_descriptor_header *) &uasp_intf_desc, + (struct usb_descriptor_header *) &uasp_fs_bi_desc, + (struct usb_descriptor_header *) &uasp_bi_pipe_desc, + (struct usb_descriptor_header *) &uasp_fs_bo_desc, + (struct usb_descriptor_header *) &uasp_bo_pipe_desc, + (struct usb_descriptor_header *) &uasp_fs_status_desc, + (struct usb_descriptor_header *) &uasp_status_pipe_desc, + (struct usb_descriptor_header *) &uasp_fs_cmd_desc, + (struct usb_descriptor_header *) &uasp_cmd_pipe_desc, + NULL, +}; + +static struct usb_descriptor_header *uasp_hs_function_desc[] = { + (struct usb_descriptor_header *) &bot_intf_desc, + (struct usb_descriptor_header *) &uasp_bi_desc, + (struct usb_descriptor_header *) &uasp_bo_desc, + + (struct usb_descriptor_header *) &uasp_intf_desc, + (struct usb_descriptor_header *) &uasp_bi_desc, + (struct usb_descriptor_header *) &uasp_bi_pipe_desc, + (struct usb_descriptor_header *) &uasp_bo_desc, + (struct usb_descriptor_header *) &uasp_bo_pipe_desc, + (struct usb_descriptor_header *) &uasp_status_desc, + (struct usb_descriptor_header *) &uasp_status_pipe_desc, + (struct usb_descriptor_header *) &uasp_cmd_desc, + (struct usb_descriptor_header *) &uasp_cmd_pipe_desc, + NULL, +}; + +static struct usb_descriptor_header *uasp_ss_function_desc[] = { + (struct usb_descriptor_header *) &bot_intf_desc, + (struct usb_descriptor_header *) &uasp_ss_bi_desc, + (struct usb_descriptor_header *) &bot_bi_ep_comp_desc, + (struct usb_descriptor_header *) &uasp_ss_bo_desc, + (struct usb_descriptor_header *) &bot_bo_ep_comp_desc, + + (struct usb_descriptor_header *) &uasp_intf_desc, + (struct usb_descriptor_header *) &uasp_ss_bi_desc, + (struct usb_descriptor_header *) &uasp_bi_ep_comp_desc, + (struct usb_descriptor_header *) &uasp_bi_pipe_desc, + (struct usb_descriptor_header *) &uasp_ss_bo_desc, + (struct usb_descriptor_header *) &uasp_bo_ep_comp_desc, + (struct usb_descriptor_header *) &uasp_bo_pipe_desc, + (struct usb_descriptor_header *) &uasp_ss_status_desc, + (struct usb_descriptor_header *) &uasp_status_in_ep_comp_desc, + (struct usb_descriptor_header *) &uasp_status_pipe_desc, + (struct usb_descriptor_header *) &uasp_ss_cmd_desc, + (struct usb_descriptor_header *) &uasp_cmd_comp_desc, + (struct usb_descriptor_header *) &uasp_cmd_pipe_desc, + NULL, +}; + +#define UAS_VENDOR_ID 0x0525 /* NetChip */ +#define UAS_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */ + +static struct usb_device_descriptor usbg_device_desc = { + .bLength = sizeof(usbg_device_desc), + .bDescriptorType = USB_DT_DEVICE, + .bcdUSB = cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_PER_INTERFACE, + .idVendor = cpu_to_le16(UAS_VENDOR_ID), + .idProduct = cpu_to_le16(UAS_PRODUCT_ID), + .bNumConfigurations = 1, +}; + +static struct usb_string usbg_us_strings[] = { + [USB_GADGET_MANUFACTURER_IDX].s = "Target Manufactor", + [USB_GADGET_PRODUCT_IDX].s = "Target Product", + [USB_GADGET_SERIAL_IDX].s = "000000000001", + [USB_G_STR_CONFIG].s = "default config", + [USB_G_STR_INT_UAS].s = "USB Attached SCSI", + [USB_G_STR_INT_BBB].s = "Bulk Only Transport", + { }, +}; + +static struct usb_gadget_strings usbg_stringtab = { + .language = 0x0409, + .strings = usbg_us_strings, +}; + +static struct usb_gadget_strings *usbg_strings[] = { + &usbg_stringtab, + NULL, +}; + +static int guas_unbind(struct usb_composite_dev *cdev) +{ + return 0; +} + +static struct usb_configuration usbg_config_driver = { + .label = "Linux Target", + .bConfigurationValue = 1, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + +static void give_back_ep(struct usb_ep **pep) +{ + struct usb_ep *ep = *pep; + if (!ep) + return; + ep->driver_data = NULL; +} + +static int usbg_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_uas *fu = to_f_uas(f); + struct usb_gadget *gadget = c->cdev->gadget; + struct usb_ep *ep; + int iface; + int ret; + + iface = usb_interface_id(c, f); + if (iface < 0) + return iface; + + bot_intf_desc.bInterfaceNumber = iface; + uasp_intf_desc.bInterfaceNumber = iface; + fu->iface = iface; + ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_bi_desc, + &uasp_bi_ep_comp_desc); + if (!ep) + goto ep_fail; + + ep->driver_data = fu; + fu->ep_in = ep; + + ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_bo_desc, + &uasp_bo_ep_comp_desc); + if (!ep) + goto ep_fail; + ep->driver_data = fu; + fu->ep_out = ep; + + ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_status_desc, + &uasp_status_in_ep_comp_desc); + if (!ep) + goto ep_fail; + ep->driver_data = fu; + fu->ep_status = ep; + + ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_cmd_desc, + &uasp_cmd_comp_desc); + if (!ep) + goto ep_fail; + ep->driver_data = fu; + fu->ep_cmd = ep; + + /* Assume endpoint addresses are the same for both speeds */ + uasp_bi_desc.bEndpointAddress = uasp_ss_bi_desc.bEndpointAddress; + uasp_bo_desc.bEndpointAddress = uasp_ss_bo_desc.bEndpointAddress; + uasp_status_desc.bEndpointAddress = + uasp_ss_status_desc.bEndpointAddress; + uasp_cmd_desc.bEndpointAddress = uasp_ss_cmd_desc.bEndpointAddress; + + uasp_fs_bi_desc.bEndpointAddress = uasp_ss_bi_desc.bEndpointAddress; + uasp_fs_bo_desc.bEndpointAddress = uasp_ss_bo_desc.bEndpointAddress; + uasp_fs_status_desc.bEndpointAddress = + uasp_ss_status_desc.bEndpointAddress; + uasp_fs_cmd_desc.bEndpointAddress = uasp_ss_cmd_desc.bEndpointAddress; + + ret = usb_assign_descriptors(f, uasp_fs_function_desc, + uasp_hs_function_desc, uasp_ss_function_desc); + if (ret) + goto ep_fail; + + return 0; +ep_fail: + pr_err("Can't claim all required eps\n"); + + give_back_ep(&fu->ep_in); + give_back_ep(&fu->ep_out); + give_back_ep(&fu->ep_status); + give_back_ep(&fu->ep_cmd); + return -ENOTSUPP; +} + +static void usbg_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_uas *fu = to_f_uas(f); + + usb_free_all_descriptors(f); + kfree(fu); +} + +struct guas_setup_wq { + struct work_struct work; + struct f_uas *fu; + unsigned int alt; +}; + +static void usbg_delayed_set_alt(struct work_struct *wq) +{ + struct guas_setup_wq *work = container_of(wq, struct guas_setup_wq, + work); + struct f_uas *fu = work->fu; + int alt = work->alt; + + kfree(work); + + if (fu->flags & USBG_IS_BOT) + bot_cleanup_old_alt(fu); + if (fu->flags & USBG_IS_UAS) + uasp_cleanup_old_alt(fu); + + if (alt == USB_G_ALT_INT_BBB) + bot_set_alt(fu); + else if (alt == USB_G_ALT_INT_UAS) + uasp_set_alt(fu); + usb_composite_setup_continue(fu->function.config->cdev); +} + +static int usbg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_uas *fu = to_f_uas(f); + + if ((alt == USB_G_ALT_INT_BBB) || (alt == USB_G_ALT_INT_UAS)) { + struct guas_setup_wq *work; + + work = kmalloc(sizeof(*work), GFP_ATOMIC); + if (!work) + return -ENOMEM; + INIT_WORK(&work->work, usbg_delayed_set_alt); + work->fu = fu; + work->alt = alt; + schedule_work(&work->work); + return USB_GADGET_DELAYED_STATUS; + } + return -EOPNOTSUPP; +} + +static void usbg_disable(struct usb_function *f) +{ + struct f_uas *fu = to_f_uas(f); + + if (fu->flags & USBG_IS_UAS) + uasp_cleanup_old_alt(fu); + else if (fu->flags & USBG_IS_BOT) + bot_cleanup_old_alt(fu); + fu->flags = 0; +} + +static int usbg_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_uas *fu = to_f_uas(f); + + if (!(fu->flags & USBG_IS_BOT)) + return -EOPNOTSUPP; + + return usbg_bot_setup(f, ctrl); +} + +static int usbg_cfg_bind(struct usb_configuration *c) +{ + struct f_uas *fu; + int ret; + + fu = kzalloc(sizeof(*fu), GFP_KERNEL); + if (!fu) + return -ENOMEM; + fu->function.name = "Target Function"; + fu->function.bind = usbg_bind; + fu->function.unbind = usbg_unbind; + fu->function.set_alt = usbg_set_alt; + fu->function.setup = usbg_setup; + fu->function.disable = usbg_disable; + fu->tpg = the_only_tpg_I_currently_have; + + bot_intf_desc.iInterface = usbg_us_strings[USB_G_STR_INT_BBB].id; + uasp_intf_desc.iInterface = usbg_us_strings[USB_G_STR_INT_UAS].id; + + ret = usb_add_function(c, &fu->function); + if (ret) + goto err; + + return 0; +err: + kfree(fu); + return ret; +} + +static int usb_target_bind(struct usb_composite_dev *cdev) +{ + int ret; + + ret = usb_string_ids_tab(cdev, usbg_us_strings); + if (ret) + return ret; + + usbg_device_desc.iManufacturer = + usbg_us_strings[USB_GADGET_MANUFACTURER_IDX].id; + usbg_device_desc.iProduct = usbg_us_strings[USB_GADGET_PRODUCT_IDX].id; + usbg_device_desc.iSerialNumber = + usbg_us_strings[USB_GADGET_SERIAL_IDX].id; + usbg_config_driver.iConfiguration = + usbg_us_strings[USB_G_STR_CONFIG].id; + + ret = usb_add_config(cdev, &usbg_config_driver, + usbg_cfg_bind); + if (ret) + return ret; + usb_composite_overwrite_options(cdev, &coverwrite); + return 0; +} + +static __refdata struct usb_composite_driver usbg_driver = { + .name = "g_target", + .dev = &usbg_device_desc, + .strings = usbg_strings, + .max_speed = USB_SPEED_SUPER, + .bind = usb_target_bind, + .unbind = guas_unbind, +}; + +static int usbg_attach(struct usbg_tpg *tpg) +{ + return usb_composite_probe(&usbg_driver); +} + +static void usbg_detach(struct usbg_tpg *tpg) +{ + usb_composite_unregister(&usbg_driver); +} + +static int __init usb_target_gadget_init(void) +{ + int ret; + + ret = usbg_register_configfs(); + return ret; +} +module_init(usb_target_gadget_init); + +static void __exit usb_target_gadget_exit(void) +{ + usbg_deregister_configfs(); +} +module_exit(usb_target_gadget_exit); + +MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>"); +MODULE_DESCRIPTION("usb-gadget fabric"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/gadget/tcm_usb_gadget.h b/drivers/usb/gadget/tcm_usb_gadget.h new file mode 100644 index 00000000000..8289219925b --- /dev/null +++ b/drivers/usb/gadget/tcm_usb_gadget.h @@ -0,0 +1,145 @@ +#ifndef __TARGET_USB_GADGET_H__ +#define __TARGET_USB_GADGET_H__ + +#include <linux/kref.h> +/* #include <linux/usb/uas.h> */ +#include <linux/usb/composite.h> +#include <linux/usb/uas.h> +#include <linux/usb/storage.h> +#include <scsi/scsi.h> +#include <target/target_core_base.h> +#include <target/target_core_fabric.h> + +#define USBG_NAMELEN 32 + +#define fuas_to_gadget(f) (f->function.config->cdev->gadget) +#define UASP_SS_EP_COMP_LOG_STREAMS 4 +#define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS) + +enum { + USB_G_STR_CONFIG = USB_GADGET_FIRST_AVAIL_IDX, + USB_G_STR_INT_UAS, + USB_G_STR_INT_BBB, +}; + +#define USB_G_ALT_INT_BBB 0 +#define USB_G_ALT_INT_UAS 1 + +struct usbg_nacl { + /* Binary World Wide unique Port Name for SAS Initiator port */ + u64 iport_wwpn; + /* ASCII formatted WWPN for Sas Initiator port */ + char iport_name[USBG_NAMELEN]; + /* Returned by usbg_make_nodeacl() */ + struct se_node_acl se_node_acl; +}; + +struct tcm_usbg_nexus { + struct se_session *tvn_se_sess; +}; + +struct usbg_tpg { + struct mutex tpg_mutex; + /* SAS port target portal group tag for TCM */ + u16 tport_tpgt; + /* Pointer back to usbg_tport */ + struct usbg_tport *tport; + struct workqueue_struct *workqueue; + /* Returned by usbg_make_tpg() */ + struct se_portal_group se_tpg; + u32 gadget_connect; + struct tcm_usbg_nexus *tpg_nexus; + atomic_t tpg_port_count; +}; + +struct usbg_tport { + /* SCSI protocol the tport is providing */ + u8 tport_proto_id; + /* Binary World Wide unique Port Name for SAS Target port */ + u64 tport_wwpn; + /* ASCII formatted WWPN for SAS Target port */ + char tport_name[USBG_NAMELEN]; + /* Returned by usbg_make_tport() */ + struct se_wwn tport_wwn; +}; + +enum uas_state { + UASP_SEND_DATA, + UASP_RECEIVE_DATA, + UASP_SEND_STATUS, + UASP_QUEUE_COMMAND, +}; + +#define USBG_MAX_CMD 64 +struct usbg_cmd { + /* common */ + u8 cmd_buf[USBG_MAX_CMD]; + u32 data_len; + struct work_struct work; + int unpacked_lun; + struct se_cmd se_cmd; + void *data_buf; /* used if no sg support available */ + struct f_uas *fu; + struct completion write_complete; + struct kref ref; + + /* UAS only */ + u16 tag; + u16 prio_attr; + struct sense_iu sense_iu; + enum uas_state state; + struct uas_stream *stream; + + /* BOT only */ + __le32 bot_tag; + unsigned int csw_code; + unsigned is_read:1; + +}; + +struct uas_stream { + struct usb_request *req_in; + struct usb_request *req_out; + struct usb_request *req_status; +}; + +struct usbg_cdb { + struct usb_request *req; + void *buf; +}; + +struct bot_status { + struct usb_request *req; + struct bulk_cs_wrap csw; +}; + +struct f_uas { + struct usbg_tpg *tpg; + struct usb_function function; + u16 iface; + + u32 flags; +#define USBG_ENABLED (1 << 0) +#define USBG_IS_UAS (1 << 1) +#define USBG_USE_STREAMS (1 << 2) +#define USBG_IS_BOT (1 << 3) +#define USBG_BOT_CMD_PEND (1 << 4) + + struct usbg_cdb cmd; + struct usb_ep *ep_in; + struct usb_ep *ep_out; + + /* UAS */ + struct usb_ep *ep_status; + struct usb_ep *ep_cmd; + struct uas_stream stream[UASP_SS_EP_COMP_NUM_STREAMS]; + + /* BOT */ + struct bot_status bot_status; + struct usb_request *bot_req_in; + struct usb_request *bot_req_out; +}; + +extern struct usbg_tpg *the_only_tpg_I_currently_have; + +#endif diff --git a/drivers/usb/gadget/u_ecm.h b/drivers/usb/gadget/u_ecm.h new file mode 100644 index 00000000000..262cc03cc2c --- /dev/null +++ b/drivers/usb/gadget/u_ecm.h @@ -0,0 +1,36 @@ +/* + * u_ecm.h + * + * Utility definitions for the ecm function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_ECM_H +#define U_ECM_H + +#include <linux/usb/composite.h> + +struct f_ecm_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_ECM_H */ diff --git a/drivers/usb/gadget/u_eem.h b/drivers/usb/gadget/u_eem.h new file mode 100644 index 00000000000..e3ae97874c4 --- /dev/null +++ b/drivers/usb/gadget/u_eem.h @@ -0,0 +1,36 @@ +/* + * u_eem.h + * + * Utility definitions for the eem function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_EEM_H +#define U_EEM_H + +#include <linux/usb/composite.h> + +struct f_eem_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_EEM_H */ diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 29c854bbca4..97b027724ee 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -14,11 +14,13 @@ /* #define VERBOSE_DEBUG */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/gfp.h> #include <linux/device.h> #include <linux/ctype.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> +#include <linux/if_vlan.h> #include "u_ether.h" @@ -48,7 +50,6 @@ struct eth_dev { /* lock is held while accessing port_usb - * or updating its backlink port_usb->ioport */ spinlock_t lock; struct gether *port_usb; @@ -62,6 +63,8 @@ struct eth_dev { struct sk_buff_head rx_frames; + unsigned qmult; + unsigned header_len; struct sk_buff *(*wrap)(struct gether *, struct sk_buff *skb); int (*unwrap)(struct gether *, @@ -75,6 +78,7 @@ struct eth_dev { bool zlp; u8 host_mac[ETH_ALEN]; + u8 dev_mac[ETH_ALEN]; }; /*-------------------------------------------------------------------------*/ @@ -83,19 +87,8 @@ struct eth_dev { #define DEFAULT_QLEN 2 /* double buffering by default */ - -#ifdef CONFIG_USB_GADGET_DUALSPEED - -static unsigned qmult = 5; -module_param(qmult, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed"); - -#else /* full speed (low speed doesn't do bulk) */ -#define qmult 1 -#endif - /* for dual-speed hardware, use deeper queues at high/super speed */ -static inline int qlen(struct usb_gadget *gadget) +static inline int qlen(struct usb_gadget *gadget, unsigned qmult) { if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH || gadget->speed == USB_SPEED_SUPER)) @@ -164,12 +157,12 @@ static int ueth_change_mtu(struct net_device *net, int new_mtu) static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p) { - struct eth_dev *dev = netdev_priv(net); + struct eth_dev *dev = netdev_priv(net); - strlcpy(p->driver, "g_ether", sizeof p->driver); - strlcpy(p->version, UETH__VERSION, sizeof p->version); - strlcpy(p->fw_version, dev->gadget->name, sizeof p->fw_version); - strlcpy(p->bus_info, dev_name(&dev->gadget->dev), sizeof p->bus_info); + strlcpy(p->driver, "g_ether", sizeof(p->driver)); + strlcpy(p->version, UETH__VERSION, sizeof(p->version)); + strlcpy(p->fw_version, dev->gadget->name, sizeof(p->fw_version)); + strlcpy(p->bus_info, dev_name(&dev->gadget->dev), sizeof(p->bus_info)); } /* REVISIT can also support: @@ -301,7 +294,7 @@ static void rx_complete(struct usb_ep *ep, struct usb_request *req) while (skb2) { if (status < 0 || ETH_HLEN > skb2->len - || skb2->len > ETH_FRAME_LEN) { + || skb2->len > VLAN_ETH_FRAME_LEN) { dev->net->stats.rx_errors++; dev->net->stats.rx_length_errors++; DBG(dev, "rx length %d\n", skb2->len); @@ -594,7 +587,7 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, if (gadget_is_dualspeed(dev->gadget)) req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH || dev->gadget->speed == USB_SPEED_SUPER) - ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) + ? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0) : 0; retval = usb_ep_queue(in, req, GFP_ATOMIC); @@ -669,6 +662,8 @@ static int eth_stop(struct net_device *net) spin_lock_irqsave(&dev->lock, flags); if (dev->port_usb) { struct gether *link = dev->port_usb; + const struct usb_endpoint_descriptor *in; + const struct usb_endpoint_descriptor *out; if (link->close) link->close(link); @@ -682,10 +677,14 @@ static int eth_stop(struct net_device *net) * their own pace; the network stack can handle old packets. * For the moment we leave this here, since it works. */ + in = link->in_ep->desc; + out = link->out_ep->desc; usb_ep_disable(link->in_ep); usb_ep_disable(link->out_ep); if (netif_carrier_ok(net)) { DBG(dev, "host still using in/out endpoints\n"); + link->in_ep->desc = in; + link->out_ep->desc = out; usb_ep_enable(link->in_ep); usb_ep_enable(link->out_ep); } @@ -697,16 +696,6 @@ static int eth_stop(struct net_device *net) /*-------------------------------------------------------------------------*/ -/* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */ -static char *dev_addr; -module_param(dev_addr, charp, S_IRUGO); -MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); - -/* this address is invisible to ifconfig */ -static char *host_addr; -module_param(host_addr, charp, S_IRUGO); -MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); - static int get_ether_addr(const char *str, u8 *dev_addr) { if (str) { @@ -724,11 +713,20 @@ static int get_ether_addr(const char *str, u8 *dev_addr) if (is_valid_ether_addr(dev_addr)) return 0; } - random_ether_addr(dev_addr); + eth_random_addr(dev_addr); return 1; } -static struct eth_dev *the_dev; +static int get_ether_addr_str(u8 dev_addr[ETH_ALEN], char *str, int len) +{ + if (len < 18) + return -EINVAL; + + snprintf(str, len, "%02x:%02x:%02x:%02x:%02x:%02x", + dev_addr[0], dev_addr[1], dev_addr[2], + dev_addr[3], dev_addr[4], dev_addr[5]); + return 18; +} static const struct net_device_ops eth_netdev_ops = { .ndo_open = eth_open, @@ -744,30 +742,30 @@ static struct device_type gadget_type = { }; /** - * gether_setup - initialize one ethernet-over-usb link + * gether_setup_name - initialize one ethernet-over-usb link * @g: gadget to associated with these links * @ethaddr: NULL, or a buffer in which the ethernet address of the * host side of the link is recorded + * @netname: name for network device (for example, "usb") * Context: may sleep * * This sets up the single network link that may be exported by a * gadget driver using this framework. The link layer addresses are * set up using module parameters. * - * Returns negative errno, or zero on success + * Returns an eth_dev pointer on success, or an ERR_PTR on failure. */ -int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) +struct eth_dev *gether_setup_name(struct usb_gadget *g, + const char *dev_addr, const char *host_addr, + u8 ethaddr[ETH_ALEN], unsigned qmult, const char *netname) { struct eth_dev *dev; struct net_device *net; int status; - if (the_dev) - return -EBUSY; - net = alloc_etherdev(sizeof *dev); if (!net) - return -ENOMEM; + return ERR_PTR(-ENOMEM); dev = netdev_priv(net); spin_lock_init(&dev->lock); @@ -780,7 +778,8 @@ int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) /* network device setup */ dev->net = net; - strcpy(net->name, "usb%d"); + dev->qmult = qmult; + snprintf(net->name, sizeof(net->name), "%s%%d", netname); if (get_ether_addr(dev_addr, net->dev_addr)) dev_warn(&g->dev, @@ -794,13 +793,7 @@ int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) net->netdev_ops = ð_netdev_ops; - SET_ETHTOOL_OPS(net, &ops); - - /* two kinds of host-initiated state changes: - * - iff DATA transfer is active, carrier is "on" - * - tx queueing enabled if open *and* carrier is "on" - */ - netif_carrier_off(net); + net->ethtool_ops = &ops; dev->gadget = g; SET_NETDEV_DEV(net, &g->dev); @@ -810,15 +803,201 @@ int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) if (status < 0) { dev_dbg(&g->dev, "register_netdev failed, %d\n", status); free_netdev(net); + dev = ERR_PTR(status); } else { INFO(dev, "MAC %pM\n", net->dev_addr); INFO(dev, "HOST MAC %pM\n", dev->host_mac); - the_dev = dev; + /* + * two kinds of host-initiated state changes: + * - iff DATA transfer is active, carrier is "on" + * - tx queueing enabled if open *and* carrier is "on" + */ + netif_carrier_off(net); + } + + return dev; +} +EXPORT_SYMBOL_GPL(gether_setup_name); + +struct net_device *gether_setup_name_default(const char *netname) +{ + struct net_device *net; + struct eth_dev *dev; + + net = alloc_etherdev(sizeof(*dev)); + if (!net) + return ERR_PTR(-ENOMEM); + + dev = netdev_priv(net); + spin_lock_init(&dev->lock); + spin_lock_init(&dev->req_lock); + INIT_WORK(&dev->work, eth_work); + INIT_LIST_HEAD(&dev->tx_reqs); + INIT_LIST_HEAD(&dev->rx_reqs); + + skb_queue_head_init(&dev->rx_frames); + + /* network device setup */ + dev->net = net; + dev->qmult = QMULT_DEFAULT; + snprintf(net->name, sizeof(net->name), "%s%%d", netname); + + eth_random_addr(dev->dev_mac); + pr_warn("using random %s ethernet address\n", "self"); + eth_random_addr(dev->host_mac); + pr_warn("using random %s ethernet address\n", "host"); + + net->netdev_ops = ð_netdev_ops; + + net->ethtool_ops = &ops; + SET_NETDEV_DEVTYPE(net, &gadget_type); + + return net; +} +EXPORT_SYMBOL_GPL(gether_setup_name_default); + +int gether_register_netdev(struct net_device *net) +{ + struct eth_dev *dev; + struct usb_gadget *g; + struct sockaddr sa; + int status; + + if (!net->dev.parent) + return -EINVAL; + dev = netdev_priv(net); + g = dev->gadget; + status = register_netdev(net); + if (status < 0) { + dev_dbg(&g->dev, "register_netdev failed, %d\n", status); + return status; + } else { + INFO(dev, "HOST MAC %pM\n", dev->host_mac); + + /* two kinds of host-initiated state changes: + * - iff DATA transfer is active, carrier is "on" + * - tx queueing enabled if open *and* carrier is "on" + */ + netif_carrier_off(net); } + sa.sa_family = net->type; + memcpy(sa.sa_data, dev->dev_mac, ETH_ALEN); + rtnl_lock(); + status = dev_set_mac_address(net, &sa); + rtnl_unlock(); + if (status) + pr_warn("cannot set self ethernet address: %d\n", status); + else + INFO(dev, "MAC %pM\n", dev->dev_mac); return status; } +EXPORT_SYMBOL_GPL(gether_register_netdev); + +void gether_set_gadget(struct net_device *net, struct usb_gadget *g) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + dev->gadget = g; + SET_NETDEV_DEV(net, &g->dev); +} +EXPORT_SYMBOL_GPL(gether_set_gadget); + +int gether_set_dev_addr(struct net_device *net, const char *dev_addr) +{ + struct eth_dev *dev; + u8 new_addr[ETH_ALEN]; + + dev = netdev_priv(net); + if (get_ether_addr(dev_addr, new_addr)) + return -EINVAL; + memcpy(dev->dev_mac, new_addr, ETH_ALEN); + return 0; +} +EXPORT_SYMBOL_GPL(gether_set_dev_addr); + +int gether_get_dev_addr(struct net_device *net, char *dev_addr, int len) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + return get_ether_addr_str(dev->dev_mac, dev_addr, len); +} +EXPORT_SYMBOL_GPL(gether_get_dev_addr); + +int gether_set_host_addr(struct net_device *net, const char *host_addr) +{ + struct eth_dev *dev; + u8 new_addr[ETH_ALEN]; + + dev = netdev_priv(net); + if (get_ether_addr(host_addr, new_addr)) + return -EINVAL; + memcpy(dev->host_mac, new_addr, ETH_ALEN); + return 0; +} +EXPORT_SYMBOL_GPL(gether_set_host_addr); + +int gether_get_host_addr(struct net_device *net, char *host_addr, int len) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + return get_ether_addr_str(dev->host_mac, host_addr, len); +} +EXPORT_SYMBOL_GPL(gether_get_host_addr); + +int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len) +{ + struct eth_dev *dev; + + if (len < 13) + return -EINVAL; + + dev = netdev_priv(net); + snprintf(host_addr, len, "%pm", dev->host_mac); + + return strlen(host_addr); +} +EXPORT_SYMBOL_GPL(gether_get_host_addr_cdc); + +void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN]) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + memcpy(host_mac, dev->host_mac, ETH_ALEN); +} +EXPORT_SYMBOL_GPL(gether_get_host_addr_u8); + +void gether_set_qmult(struct net_device *net, unsigned qmult) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + dev->qmult = qmult; +} +EXPORT_SYMBOL_GPL(gether_set_qmult); + +unsigned gether_get_qmult(struct net_device *net) +{ + struct eth_dev *dev; + + dev = netdev_priv(net); + return dev->qmult; +} +EXPORT_SYMBOL_GPL(gether_get_qmult); + +int gether_get_ifname(struct net_device *net, char *name, int len) +{ + rtnl_lock(); + strlcpy(name, netdev_name(net), len); + rtnl_unlock(); + return strlen(name); +} +EXPORT_SYMBOL_GPL(gether_get_ifname); /** * gether_cleanup - remove Ethernet-over-USB device @@ -826,18 +1005,16 @@ int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) * * This is called to free all resources allocated by @gether_setup(). */ -void gether_cleanup(void) +void gether_cleanup(struct eth_dev *dev) { - if (!the_dev) + if (!dev) return; - unregister_netdev(the_dev->net); - flush_work_sync(&the_dev->work); - free_netdev(the_dev->net); - - the_dev = NULL; + unregister_netdev(dev->net); + flush_work(&dev->work); + free_netdev(dev->net); } - +EXPORT_SYMBOL_GPL(gether_cleanup); /** * gether_connect - notify network layer that USB link is active @@ -857,7 +1034,7 @@ void gether_cleanup(void) */ struct net_device *gether_connect(struct gether *link) { - struct eth_dev *dev = the_dev; + struct eth_dev *dev = link->ioport; int result = 0; if (!dev) @@ -880,11 +1057,12 @@ struct net_device *gether_connect(struct gether *link) } if (result == 0) - result = alloc_requests(dev, link, qlen(dev->gadget)); + result = alloc_requests(dev, link, qlen(dev->gadget, + dev->qmult)); if (result == 0) { dev->zlp = link->is_zlp_ok; - DBG(dev, "qlen %d\n", qlen(dev->gadget)); + DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult)); dev->header_len = link->header_len; dev->unwrap = link->unwrap; @@ -892,7 +1070,6 @@ struct net_device *gether_connect(struct gether *link) spin_lock(&dev->lock); dev->port_usb = link; - link->ioport = dev; if (netif_running(dev->net)) { if (link->open) link->open(link); @@ -918,6 +1095,7 @@ fail0: return ERR_PTR(result); return dev->net; } +EXPORT_SYMBOL_GPL(gether_connect); /** * gether_disconnect - notify network layer that USB link is inactive @@ -942,7 +1120,10 @@ void gether_disconnect(struct gether *link) DBG(dev, "%s\n", __func__); + netif_tx_lock(dev->net); netif_stop_queue(dev->net); + netif_tx_unlock(dev->net); + netif_carrier_off(dev->net); /* disable endpoints, forcing (synchronous) completion @@ -986,6 +1167,9 @@ void gether_disconnect(struct gether *link) spin_lock(&dev->lock); dev->port_usb = NULL; - link->ioport = NULL; spin_unlock(&dev->lock); } +EXPORT_SYMBOL_GPL(gether_disconnect); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h index 8012357e98a..0f0290acea7 100644 --- a/drivers/usb/gadget/u_ether.h +++ b/drivers/usb/gadget/u_ether.h @@ -21,6 +21,27 @@ #include "gadget_chips.h" +#define QMULT_DEFAULT 5 + +/* + * dev_addr: initial value + * changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" + * host_addr: this address is invisible to ifconfig + */ +#define USB_ETHERNET_MODULE_PARAMETERS() \ + static unsigned qmult = QMULT_DEFAULT; \ + module_param(qmult, uint, S_IRUGO|S_IWUSR); \ + MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");\ + \ + static char *dev_addr; \ + module_param(dev_addr, charp, S_IRUGO); \ + MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); \ + \ + static char *host_addr; \ + module_param(host_addr, charp, S_IRUGO); \ + MODULE_PARM_DESC(host_addr, "Host Ethernet Address") + +struct eth_dev; /* * This represents the USB side of an "ethernet" link, managed by a USB @@ -69,10 +90,165 @@ struct gether { |USB_CDC_PACKET_TYPE_PROMISCUOUS \ |USB_CDC_PACKET_TYPE_DIRECTED) +/* variant of gether_setup that allows customizing network device name */ +struct eth_dev *gether_setup_name(struct usb_gadget *g, + const char *dev_addr, const char *host_addr, + u8 ethaddr[ETH_ALEN], unsigned qmult, const char *netname); /* netdev setup/teardown as directed by the gadget driver */ -int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]); -void gether_cleanup(void); +/* gether_setup - initialize one ethernet-over-usb link + * @g: gadget to associated with these links + * @ethaddr: NULL, or a buffer in which the ethernet address of the + * host side of the link is recorded + * Context: may sleep + * + * This sets up the single network link that may be exported by a + * gadget driver using this framework. The link layer addresses are + * set up using module parameters. + * + * Returns a eth_dev pointer on success, or an ERR_PTR on failure + */ +static inline struct eth_dev *gether_setup(struct usb_gadget *g, + const char *dev_addr, const char *host_addr, + u8 ethaddr[ETH_ALEN], unsigned qmult) +{ + return gether_setup_name(g, dev_addr, host_addr, ethaddr, qmult, "usb"); +} + +/* + * variant of gether_setup_default that allows customizing + * network device name + */ +struct net_device *gether_setup_name_default(const char *netname); + +/* + * gether_register_netdev - register the net device + * @net: net device to register + * + * Registers the net device associated with this ethernet-over-usb link + * + */ +int gether_register_netdev(struct net_device *net); + +/* gether_setup_default - initialize one ethernet-over-usb link + * Context: may sleep + * + * This sets up the single network link that may be exported by a + * gadget driver using this framework. The link layer addresses + * are set to random values. + * + * Returns negative errno, or zero on success + */ +static inline struct net_device *gether_setup_default(void) +{ + return gether_setup_name_default("usb"); +} + +/** + * gether_set_gadget - initialize one ethernet-over-usb link with a gadget + * @net: device representing this link + * @g: the gadget to initialize with + * + * This associates one ethernet-over-usb link with a gadget. + */ +void gether_set_gadget(struct net_device *net, struct usb_gadget *g); + +/** + * gether_set_dev_addr - initialize an ethernet-over-usb link with eth address + * @net: device representing this link + * @dev_addr: eth address of this device + * + * This sets the device-side Ethernet address of this ethernet-over-usb link + * if dev_addr is correct. + * Returns negative errno if the new address is incorrect. + */ +int gether_set_dev_addr(struct net_device *net, const char *dev_addr); + +/** + * gether_get_dev_addr - get an ethernet-over-usb link eth address + * @net: device representing this link + * @dev_addr: place to store device's eth address + * @len: length of the @dev_addr buffer + * + * This gets the device-side Ethernet address of this ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_dev_addr(struct net_device *net, char *dev_addr, int len); + +/** + * gether_set_host_addr - initialize an ethernet-over-usb link with host address + * @net: device representing this link + * @host_addr: eth address of the host + * + * This sets the host-side Ethernet address of this ethernet-over-usb link + * if host_addr is correct. + * Returns negative errno if the new address is incorrect. + */ +int gether_set_host_addr(struct net_device *net, const char *host_addr); + +/** + * gether_get_host_addr - get an ethernet-over-usb link host address + * @net: device representing this link + * @host_addr: place to store eth address of the host + * @len: length of the @host_addr buffer + * + * This gets the host-side Ethernet address of this ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_host_addr(struct net_device *net, char *host_addr, int len); + +/** + * gether_get_host_addr_cdc - get an ethernet-over-usb link host address + * @net: device representing this link + * @host_addr: place to store eth address of the host + * @len: length of the @host_addr buffer + * + * This gets the CDC formatted host-side Ethernet address of this + * ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len); + +/** + * gether_get_host_addr_u8 - get an ethernet-over-usb link host address + * @net: device representing this link + * @host_mac: place to store the eth address of the host + * + * This gets the binary formatted host-side Ethernet address of this + * ethernet-over-usb link. + */ +void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN]); + +/** + * gether_set_qmult - initialize an ethernet-over-usb link with a multiplier + * @net: device representing this link + * @qmult: queue multiplier + * + * This sets the queue length multiplier of this ethernet-over-usb link. + * For higher speeds use longer queues. + */ +void gether_set_qmult(struct net_device *net, unsigned qmult); + +/** + * gether_get_qmult - get an ethernet-over-usb link multiplier + * @net: device representing this link + * + * This gets the queue length multiplier of this ethernet-over-usb link. + */ +unsigned gether_get_qmult(struct net_device *net); + +/** + * gether_get_ifname - get an ethernet-over-usb link interface name + * @net: device representing this link + * @name: place to store the interface name + * @len: length of the @name buffer + * + * This gets the interface name of this ethernet-over-usb link. + * Returns zero on success, else negative errno. + */ +int gether_get_ifname(struct net_device *net, char *name, int len); + +void gether_cleanup(struct eth_dev *dev); /* connect/disconnect is handled by individual functions */ struct net_device *gether_connect(struct gether *); @@ -91,24 +267,4 @@ static inline bool can_support_ecm(struct usb_gadget *gadget) return true; } -/* each configuration may bind one instance of an ethernet link */ -int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); -int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); -int ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); -int eem_bind_config(struct usb_configuration *c); - -#ifdef USB_ETH_RNDIS - -int rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); - -#else - -static inline int -rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) -{ - return 0; -} - -#endif - #endif /* __U_ETHER_H */ diff --git a/drivers/usb/gadget/u_ether_configfs.h b/drivers/usb/gadget/u_ether_configfs.h new file mode 100644 index 00000000000..bcbd30146cf --- /dev/null +++ b/drivers/usb/gadget/u_ether_configfs.h @@ -0,0 +1,164 @@ +/* + * u_ether_configfs.h + * + * Utility definitions for configfs support in USB Ethernet functions + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __U_ETHER_CONFIGFS_H +#define __U_ETHER_CONFIGFS_H + +#define USB_ETHERNET_CONFIGFS_ITEM(_f_) \ + CONFIGFS_ATTR_STRUCT(f_##_f_##_opts); \ + CONFIGFS_ATTR_OPS(f_##_f_##_opts); \ + \ + static void _f_##_attr_release(struct config_item *item) \ + { \ + struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item); \ + \ + usb_put_function_instance(&opts->func_inst); \ + } \ + \ + static struct configfs_item_operations _f_##_item_ops = { \ + .release = _f_##_attr_release, \ + .show_attribute = f_##_f_##_opts_attr_show, \ + .store_attribute = f_##_f_##_opts_attr_store, \ + } + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(_f_) \ + static ssize_t _f_##_opts_dev_addr_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = gether_get_dev_addr(opts->net, page, PAGE_SIZE); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ + } \ + \ + static ssize_t _f_##_opts_dev_addr_store(struct f_##_f_##_opts *opts, \ + const char *page, size_t len)\ + { \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + mutex_unlock(&opts->lock); \ + return -EBUSY; \ + } \ + \ + ret = gether_set_dev_addr(opts->net, page); \ + mutex_unlock(&opts->lock); \ + if (!ret) \ + ret = len; \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_dev_addr = \ + __CONFIGFS_ATTR(dev_addr, S_IRUGO | S_IWUSR, \ + _f_##_opts_dev_addr_show, \ + _f_##_opts_dev_addr_store) + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(_f_) \ + static ssize_t _f_##_opts_host_addr_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = gether_get_host_addr(opts->net, page, PAGE_SIZE); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ + } \ + \ + static ssize_t _f_##_opts_host_addr_store(struct f_##_f_##_opts *opts, \ + const char *page, size_t len)\ + { \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + mutex_unlock(&opts->lock); \ + return -EBUSY; \ + } \ + \ + ret = gether_set_host_addr(opts->net, page); \ + mutex_unlock(&opts->lock); \ + if (!ret) \ + ret = len; \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_host_addr = \ + __CONFIGFS_ATTR(host_addr, S_IRUGO | S_IWUSR, \ + _f_##_opts_host_addr_show, \ + _f_##_opts_host_addr_store) + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(_f_) \ + static ssize_t _f_##_opts_qmult_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + unsigned qmult; \ + \ + mutex_lock(&opts->lock); \ + qmult = gether_get_qmult(opts->net); \ + mutex_unlock(&opts->lock); \ + return sprintf(page, "%d", qmult); \ + } \ + \ + static ssize_t _f_##_opts_qmult_store(struct f_##_f_##_opts *opts, \ + const char *page, size_t len)\ + { \ + u8 val; \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + ret = -EBUSY; \ + goto out; \ + } \ + \ + ret = kstrtou8(page, 0, &val); \ + if (ret) \ + goto out; \ + \ + gether_set_qmult(opts->net, val); \ + ret = len; \ +out: \ + mutex_unlock(&opts->lock); \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_qmult = \ + __CONFIGFS_ATTR(qmult, S_IRUGO | S_IWUSR, \ + _f_##_opts_qmult_show, \ + _f_##_opts_qmult_store) + +#define USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(_f_) \ + static ssize_t _f_##_opts_ifname_show(struct f_##_f_##_opts *opts, \ + char *page) \ + { \ + int ret; \ + \ + mutex_lock(&opts->lock); \ + ret = gether_get_ifname(opts->net, page, PAGE_SIZE); \ + mutex_unlock(&opts->lock); \ + \ + return ret; \ + } \ + \ + static struct f_##_f_##_opts_attribute f_##_f_##_opts_ifname = \ + __CONFIGFS_ATTR_RO(ifname, _f_##_opts_ifname_show) + +#endif /* __U_ETHER_CONFIGFS_H */ diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c new file mode 100644 index 00000000000..c6276f0268a --- /dev/null +++ b/drivers/usb/gadget/u_f.c @@ -0,0 +1,32 @@ +/* + * u_f.c -- USB function utilities for Gadget stack + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/usb/gadget.h> +#include "u_f.h" + +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len) +{ + struct usb_request *req; + + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req) { + req->length = len ?: default_len; + req->buf = kmalloc(req->length, GFP_ATOMIC); + if (!req->buf) { + usb_ep_free_request(ep, req); + req = NULL; + } + } + return req; +} +EXPORT_SYMBOL_GPL(alloc_ep_req); diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h new file mode 100644 index 00000000000..1d5f0eb6855 --- /dev/null +++ b/drivers/usb/gadget/u_f.h @@ -0,0 +1,52 @@ +/* + * u_f.h + * + * Utility definitions for USB functions + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __U_F_H__ +#define __U_F_H__ + +/* Variable Length Array Macros **********************************************/ +#define vla_group(groupname) size_t groupname##__next = 0 +#define vla_group_size(groupname) groupname##__next + +#define vla_item(groupname, type, name, n) \ + size_t groupname##_##name##__offset = ({ \ + size_t align_mask = __alignof__(type) - 1; \ + size_t offset = (groupname##__next + align_mask) & ~align_mask;\ + size_t size = (n) * sizeof(type); \ + groupname##__next = offset + size; \ + offset; \ + }) + +#define vla_item_with_sz(groupname, type, name, n) \ + size_t groupname##_##name##__sz = (n) * sizeof(type); \ + size_t groupname##_##name##__offset = ({ \ + size_t align_mask = __alignof__(type) - 1; \ + size_t offset = (groupname##__next + align_mask) & ~align_mask;\ + size_t size = groupname##_##name##__sz; \ + groupname##__next = offset + size; \ + offset; \ + }) + +#define vla_ptr(ptr, groupname, name) \ + ((void *) ((char *)ptr + groupname##_##name##__offset)) + +struct usb_ep; +struct usb_request; + +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len); + +#endif /* __U_F_H__ */ + + diff --git a/drivers/usb/gadget/u_fs.h b/drivers/usb/gadget/u_fs.h new file mode 100644 index 00000000000..bf0ba375d45 --- /dev/null +++ b/drivers/usb/gadget/u_fs.h @@ -0,0 +1,263 @@ +/* + * u_fs.h + * + * Utility definitions for the FunctionFS + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_FFS_H +#define U_FFS_H + +#include <linux/usb/composite.h> +#include <linux/list.h> +#include <linux/mutex.h> + +#ifdef VERBOSE_DEBUG +#ifndef pr_vdebug +# define pr_vdebug pr_debug +#endif /* pr_vdebug */ +# define ffs_dump_mem(prefix, ptr, len) \ + print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len) +#else +#ifndef pr_vdebug +# define pr_vdebug(...) do { } while (0) +#endif /* pr_vdebug */ +# define ffs_dump_mem(prefix, ptr, len) do { } while (0) +#endif /* VERBOSE_DEBUG */ + +#define ENTER() pr_vdebug("%s()\n", __func__) + +struct f_fs_opts; + +struct ffs_dev { + const char *name; + bool name_allocated; + bool mounted; + bool desc_ready; + bool single; + struct ffs_data *ffs_data; + struct f_fs_opts *opts; + struct list_head entry; + + int (*ffs_ready_callback)(struct ffs_data *ffs); + void (*ffs_closed_callback)(struct ffs_data *ffs); + void *(*ffs_acquire_dev_callback)(struct ffs_dev *dev); + void (*ffs_release_dev_callback)(struct ffs_dev *dev); +}; + +extern struct mutex ffs_lock; + +static inline void ffs_dev_lock(void) +{ + mutex_lock(&ffs_lock); +} + +static inline void ffs_dev_unlock(void) +{ + mutex_unlock(&ffs_lock); +} + +int ffs_name_dev(struct ffs_dev *dev, const char *name); +int ffs_single_dev(struct ffs_dev *dev); + +struct ffs_epfile; +struct ffs_function; + +enum ffs_state { + /* + * Waiting for descriptors and strings. + * + * In this state no open(2), read(2) or write(2) on epfiles + * may succeed (which should not be the problem as there + * should be no such files opened in the first place). + */ + FFS_READ_DESCRIPTORS, + FFS_READ_STRINGS, + + /* + * We've got descriptors and strings. We are or have called + * functionfs_ready_callback(). functionfs_bind() may have + * been called but we don't know. + * + * This is the only state in which operations on epfiles may + * succeed. + */ + FFS_ACTIVE, + + /* + * All endpoints have been closed. This state is also set if + * we encounter an unrecoverable error. The only + * unrecoverable error is situation when after reading strings + * from user space we fail to initialise epfiles or + * functionfs_ready_callback() returns with error (<0). + * + * In this state no open(2), read(2) or write(2) (both on ep0 + * as well as epfile) may succeed (at this point epfiles are + * unlinked and all closed so this is not a problem; ep0 is + * also closed but ep0 file exists and so open(2) on ep0 must + * fail). + */ + FFS_CLOSING +}; + +enum ffs_setup_state { + /* There is no setup request pending. */ + FFS_NO_SETUP, + /* + * User has read events and there was a setup request event + * there. The next read/write on ep0 will handle the + * request. + */ + FFS_SETUP_PENDING, + /* + * There was event pending but before user space handled it + * some other event was introduced which canceled existing + * setup. If this state is set read/write on ep0 return + * -EIDRM. This state is only set when adding event. + */ + FFS_SETUP_CANCELLED +}; + +struct ffs_data { + struct usb_gadget *gadget; + + /* + * Protect access read/write operations, only one read/write + * at a time. As a consequence protects ep0req and company. + * While setup request is being processed (queued) this is + * held. + */ + struct mutex mutex; + + /* + * Protect access to endpoint related structures (basically + * usb_ep_queue(), usb_ep_dequeue(), etc. calls) except for + * endpoint zero. + */ + spinlock_t eps_lock; + + /* + * XXX REVISIT do we need our own request? Since we are not + * handling setup requests immediately user space may be so + * slow that another setup will be sent to the gadget but this + * time not to us but another function and then there could be + * a race. Is that the case? Or maybe we can use cdev->req + * after all, maybe we just need some spinlock for that? + */ + struct usb_request *ep0req; /* P: mutex */ + struct completion ep0req_completion; /* P: mutex */ + + /* reference counter */ + atomic_t ref; + /* how many files are opened (EP0 and others) */ + atomic_t opened; + + /* EP0 state */ + enum ffs_state state; + + /* + * Possible transitions: + * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock + * happens only in ep0 read which is P: mutex + * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock + * happens only in ep0 i/o which is P: mutex + * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELLED -- P: ev.waitq.lock + * + FFS_SETUP_CANCELLED -> FFS_NO_SETUP -- cmpxchg + * + * This field should never be accessed directly and instead + * ffs_setup_state_clear_cancelled function should be used. + */ + enum ffs_setup_state setup_state; + + /* Events & such. */ + struct { + u8 types[4]; + unsigned short count; + /* XXX REVISIT need to update it in some places, or do we? */ + unsigned short can_stall; + struct usb_ctrlrequest setup; + + wait_queue_head_t waitq; + } ev; /* the whole structure, P: ev.waitq.lock */ + + /* Flags */ + unsigned long flags; +#define FFS_FL_CALL_CLOSED_CALLBACK 0 +#define FFS_FL_BOUND 1 + + /* Active function */ + struct ffs_function *func; + + /* + * Device name, write once when file system is mounted. + * Intended for user to read if she wants. + */ + const char *dev_name; + /* Private data for our user (ie. gadget). Managed by user. */ + void *private_data; + + /* filled by __ffs_data_got_descs() */ + /* + * raw_descs is what you kfree, real_descs points inside of raw_descs, + * where full speed, high speed and super speed descriptors start. + * real_descs_length is the length of all those descriptors. + */ + const void *raw_descs_data; + const void *raw_descs; + unsigned raw_descs_length; + unsigned fs_descs_count; + unsigned hs_descs_count; + unsigned ss_descs_count; + + unsigned short strings_count; + unsigned short interfaces_count; + unsigned short eps_count; + unsigned short _pad1; + + /* filled by __ffs_data_got_strings() */ + /* ids in stringtabs are set in functionfs_bind() */ + const void *raw_strings; + struct usb_gadget_strings **stringtabs; + + /* + * File system's super block, write once when file system is + * mounted. + */ + struct super_block *sb; + + /* File permissions, written once when fs is mounted */ + struct ffs_file_perms { + umode_t mode; + kuid_t uid; + kgid_t gid; + } file_perms; + + /* + * The endpoint files, filled by ffs_epfiles_create(), + * destroyed by ffs_epfiles_destroy(). + */ + struct ffs_epfile *epfiles; +}; + + +struct f_fs_opts { + struct usb_function_instance func_inst; + struct ffs_dev *dev; + unsigned refcnt; + bool no_configfs; +}; + +static inline struct f_fs_opts *to_f_fs_opts(struct usb_function_instance *fi) +{ + return container_of(fi, struct f_fs_opts, func_inst); +} + +#endif /* U_FFS_H */ diff --git a/drivers/usb/gadget/u_gether.h b/drivers/usb/gadget/u_gether.h new file mode 100644 index 00000000000..d4078426ba5 --- /dev/null +++ b/drivers/usb/gadget/u_gether.h @@ -0,0 +1,36 @@ +/* + * u_gether.h + * + * Utility definitions for the subset function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_GETHER_H +#define U_GETHER_H + +#include <linux/usb/composite.h> + +struct f_gether_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_GETHER_H */ diff --git a/drivers/usb/gadget/u_ncm.h b/drivers/usb/gadget/u_ncm.h new file mode 100644 index 00000000000..ce0f3a78ca1 --- /dev/null +++ b/drivers/usb/gadget/u_ncm.h @@ -0,0 +1,36 @@ +/* + * u_ncm.h + * + * Utility definitions for the ncm function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_NCM_H +#define U_NCM_H + +#include <linux/usb/composite.h> + +struct f_ncm_opts { + struct usb_function_instance func_inst; + struct net_device *net; + bool bound; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_NCM_H */ diff --git a/drivers/usb/gadget/u_os_desc.h b/drivers/usb/gadget/u_os_desc.h new file mode 100644 index 00000000000..ea5cf8c2da2 --- /dev/null +++ b/drivers/usb/gadget/u_os_desc.h @@ -0,0 +1,90 @@ +/* + * u_os_desc.h + * + * Utility definitions for "OS Descriptors" support + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __U_OS_DESC_H__ +#define __U_OS_DESC_H__ + +#include <asm/unaligned.h> +#include <linux/nls.h> + +#define USB_EXT_PROP_DW_SIZE 0 +#define USB_EXT_PROP_DW_PROPERTY_DATA_TYPE 4 +#define USB_EXT_PROP_W_PROPERTY_NAME_LENGTH 8 +#define USB_EXT_PROP_B_PROPERTY_NAME 10 +#define USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH 10 +#define USB_EXT_PROP_B_PROPERTY_DATA 14 + +#define USB_EXT_PROP_RESERVED 0 +#define USB_EXT_PROP_UNICODE 1 +#define USB_EXT_PROP_UNICODE_ENV 2 +#define USB_EXT_PROP_BINARY 3 +#define USB_EXT_PROP_LE32 4 +#define USB_EXT_PROP_BE32 5 +#define USB_EXT_PROP_UNICODE_LINK 6 +#define USB_EXT_PROP_UNICODE_MULTI 7 + +static inline void usb_ext_prop_put_size(u8 *buf, int dw_size) +{ + put_unaligned_le32(dw_size, &buf[USB_EXT_PROP_DW_SIZE]); +} + +static inline void usb_ext_prop_put_type(u8 *buf, int type) +{ + put_unaligned_le32(type, &buf[USB_EXT_PROP_DW_PROPERTY_DATA_TYPE]); +} + +static inline int usb_ext_prop_put_name(u8 *buf, const char *name, int pnl) +{ + int result; + + put_unaligned_le16(pnl, &buf[USB_EXT_PROP_W_PROPERTY_NAME_LENGTH]); + result = utf8s_to_utf16s(name, strlen(name), UTF16_LITTLE_ENDIAN, + (wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_NAME], pnl - 2); + if (result < 0) + return result; + + put_unaligned_le16(0, &buf[USB_EXT_PROP_B_PROPERTY_NAME + pnl]); + + return pnl; +} + +static inline void usb_ext_prop_put_binary(u8 *buf, int pnl, const u8 *data, + int data_len) +{ + put_unaligned_le32(data_len, + &buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]); + memcpy(&buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl], data, data_len); +} + +static inline int usb_ext_prop_put_unicode(u8 *buf, int pnl, const char *string, + int data_len) +{ + int result; + put_unaligned_le32(data_len, + &buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]); + + result = utf8s_to_utf16s(string, data_len >> 1, UTF16_LITTLE_ENDIAN, + (wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl], + data_len - 2); + if (result < 0) + return result; + + put_unaligned_le16(0, + &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl + data_len]); + + return data_len; +} + +#endif /* __U_OS_DESC_H__ */ diff --git a/drivers/usb/gadget/u_phonet.h b/drivers/usb/gadget/u_phonet.h index 09a75259b6c..98ced18779e 100644 --- a/drivers/usb/gadget/u_phonet.h +++ b/drivers/usb/gadget/u_phonet.h @@ -14,8 +14,16 @@ #include <linux/usb/composite.h> #include <linux/usb/cdc.h> -int gphonet_setup(struct usb_gadget *gadget); -int phonet_bind_config(struct usb_configuration *c); -void gphonet_cleanup(void); +struct f_phonet_opts { + struct usb_function_instance func_inst; + bool bound; + struct net_device *net; +}; + +struct net_device *gphonet_setup_default(void); +void gphonet_set_gadget(struct net_device *net, struct usb_gadget *g); +int gphonet_register_netdev(struct net_device *net); +int phonet_bind_config(struct usb_configuration *c, struct net_device *dev); +void gphonet_cleanup(struct net_device *dev); #endif /* __U_PHONET_H */ diff --git a/drivers/usb/gadget/u_rndis.h b/drivers/usb/gadget/u_rndis.h new file mode 100644 index 00000000000..e902aa42a29 --- /dev/null +++ b/drivers/usb/gadget/u_rndis.h @@ -0,0 +1,46 @@ +/* + * u_rndis.h + * + * Utility definitions for the subset function + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_RNDIS_H +#define U_RNDIS_H + +#include <linux/usb/composite.h> + +struct f_rndis_opts { + struct usb_function_instance func_inst; + u32 vendor_id; + const char *manufacturer; + struct net_device *net; + bool bound; + bool borrowed_net; + + struct usb_os_desc rndis_os_desc; + char rndis_ext_compat_id[16]; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +int rndis_init(void); +void rndis_exit(void); +void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net); + +#endif /* U_RNDIS_H */ diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 6597a6813e4..ad0aca81200 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -26,6 +26,7 @@ #include <linux/tty_flip.h> #include <linux/slab.h> #include <linux/export.h> +#include <linux/module.h> #include "u_serial.h" @@ -35,11 +36,12 @@ * "serial port" functionality through the USB gadget stack. Each such * port is exposed through a /dev/ttyGS* node. * - * After initialization (gserial_setup), these TTY port devices stay - * available until they are removed (gserial_cleanup). Each one may be - * connected to a USB function (gserial_connect), or disconnected (with - * gserial_disconnect) when the USB host issues a config change event. - * Data can only flow when the port is connected to the host. + * After this module has been loaded, the individual TTY port can be requested + * (gserial_alloc_line()) and it will stay available until they are removed + * (gserial_free_line()). Each one may be connected to a USB function + * (gserial_connect), or disconnected (with gserial_disconnect) when the USB + * host issues a config change event. Data can only flow when the port is + * connected to the host. * * A given TTY port can be made available in multiple configurations. * For example, each one might expose a ttyGS0 node which provides a @@ -94,17 +96,14 @@ struct gs_buf { * (and thus for each /dev/ node). */ struct gs_port { + struct tty_port port; spinlock_t port_lock; /* guard port_* access */ struct gserial *port_usb; - struct tty_struct *port_tty; - unsigned open_count; bool openclose; /* open/close in progress */ u8 port_num; - wait_queue_head_t close_wait; /* wait for last close */ - struct list_head read_pool; int read_started; int read_allocated; @@ -122,24 +121,25 @@ struct gs_port { struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ }; -/* increase N_PORTS if you need more */ -#define N_PORTS 4 static struct portmaster { struct mutex lock; /* protect open/close */ struct gs_port *port; -} ports[N_PORTS]; -static unsigned n_ports; +} ports[MAX_U_SERIAL_PORTS]; #define GS_CLOSE_TIMEOUT 15 /* seconds */ #ifdef VERBOSE_DEBUG +#ifndef pr_vdebug #define pr_vdebug(fmt, arg...) \ pr_debug(fmt, ##arg) +#endif /* pr_vdebug */ #else +#ifndef pr_vdebug #define pr_vdebug(fmt, arg...) \ ({ if (0) pr_debug(fmt, ##arg); }) +#endif /* pr_vdebug */ #endif /*-------------------------------------------------------------------------*/ @@ -308,6 +308,7 @@ gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t kmalloc_flags) return req; } +EXPORT_SYMBOL_GPL(gs_alloc_req); /* * gs_free_req @@ -319,6 +320,7 @@ void gs_free_req(struct usb_ep *ep, struct usb_request *req) kfree(req->buf); usb_ep_free_request(ep, req); } +EXPORT_SYMBOL_GPL(gs_free_req); /* * gs_send_packet @@ -412,8 +414,8 @@ __acquires(&port->port_lock) break; } - if (do_tty_wake && port->port_tty) - tty_wakeup(port->port_tty); + if (do_tty_wake && port->port.tty) + tty_wakeup(port->port.tty); return status; } @@ -435,7 +437,7 @@ __acquires(&port->port_lock) struct tty_struct *tty; /* no more rx if closed */ - tty = port->port_tty; + tty = port->port.tty; if (!tty) break; @@ -488,18 +490,14 @@ static void gs_rx_push(unsigned long _port) /* hand any queued data to the tty */ spin_lock_irq(&port->port_lock); - tty = port->port_tty; + tty = port->port.tty; while (!list_empty(queue)) { struct usb_request *req; req = list_first_entry(queue, struct usb_request, list); - /* discard data if tty was closed */ - if (!tty) - goto recycle; - /* leave data queued if tty was rx throttled */ - if (test_bit(TTY_THROTTLED, &tty->flags)) + if (tty && test_bit(TTY_THROTTLED, &tty->flags)) break; switch (req->status) { @@ -532,7 +530,8 @@ static void gs_rx_push(unsigned long _port) size -= n; } - count = tty_insert_flip_string(tty, packet, size); + count = tty_insert_flip_string(&port->port, packet, + size); if (count) do_push = true; if (count != size) { @@ -545,16 +544,16 @@ static void gs_rx_push(unsigned long _port) } port->n_read = 0; } -recycle: + list_move(&req->list, &port->read_pool); port->read_started--; } - /* Push from tty to ldisc; without low_latency set this is handled by - * a workqueue, so we won't get callbacks and can hold port_lock + /* Push from tty to ldisc; this is handled by a workqueue, + * so we won't get callbacks and can hold port_lock */ - if (tty && do_push) - tty_flip_buffer_push(tty); + if (do_push) + tty_flip_buffer_push(&port->port); /* We want our data queue to become empty ASAP, keeping data @@ -699,7 +698,7 @@ static int gs_start_io(struct gs_port *port) /* unblock any pending writes into our circular buffer */ if (started) { - tty_wakeup(port->port_tty); + tty_wakeup(port->port.tty); } else { gs_free_requests(ep, head, &port->read_allocated); gs_free_requests(port->port_usb->in, &port->write_pool, @@ -725,9 +724,6 @@ static int gs_open(struct tty_struct *tty, struct file *file) struct gs_port *port; int status; - if (port_num < 0 || port_num >= n_ports) - return -ENXIO; - do { mutex_lock(&ports[port_num].lock); port = ports[port_num].port; @@ -737,9 +733,9 @@ static int gs_open(struct tty_struct *tty, struct file *file) spin_lock_irq(&port->port_lock); /* already open? Great. */ - if (port->open_count) { + if (port->port.count) { status = 0; - port->open_count++; + port->port.count++; /* currently opening/closing? wait ... */ } else if (port->openclose) { @@ -796,9 +792,9 @@ static int gs_open(struct tty_struct *tty, struct file *file) /* REVISIT maybe wait for "carrier detect" */ tty->driver_data = port; - port->port_tty = tty; + port->port.tty = tty; - port->open_count = 1; + port->port.count = 1; port->openclose = false; /* if connected, start the I/O stream */ @@ -840,11 +836,11 @@ static void gs_close(struct tty_struct *tty, struct file *file) spin_lock_irq(&port->port_lock); - if (port->open_count != 1) { - if (port->open_count == 0) + if (port->port.count != 1) { + if (port->port.count == 0) WARN_ON(1); else - --port->open_count; + --port->port.count; goto exit; } @@ -854,7 +850,7 @@ static void gs_close(struct tty_struct *tty, struct file *file) * and sleep if necessary */ port->openclose = true; - port->open_count = 0; + port->port.count = 0; gser = port->port_usb; if (gser && gser->disconnect) @@ -882,14 +878,14 @@ static void gs_close(struct tty_struct *tty, struct file *file) gs_buf_clear(&port->port_write_buf); tty->driver_data = NULL; - port->port_tty = NULL; + port->port.tty = NULL; port->openclose = false; pr_debug("gs_close: ttyGS%d (%p,%p) done!\n", port->port_num, tty, file); - wake_up_interruptible(&port->close_wait); + wake_up(&port->port.close_wait); exit: spin_unlock_irq(&port->port_lock); } @@ -920,7 +916,7 @@ static int gs_put_char(struct tty_struct *tty, unsigned char ch) unsigned long flags; int status; - pr_vdebug("gs_put_char: (%d,%p) char=0x%x, called from %p\n", + pr_vdebug("gs_put_char: (%d,%p) char=0x%x, called from %pf\n", port->port_num, tty, ch, __builtin_return_address(0)); spin_lock_irqsave(&port->port_lock, flags); @@ -1028,17 +1024,26 @@ static const struct tty_operations gs_tty_ops = { static struct tty_driver *gs_tty_driver; -static int __init +static int gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) { struct gs_port *port; + int ret = 0; + + mutex_lock(&ports[port_num].lock); + if (ports[port_num].port) { + ret = -EBUSY; + goto out; + } port = kzalloc(sizeof(struct gs_port), GFP_KERNEL); - if (port == NULL) - return -ENOMEM; + if (port == NULL) { + ret = -ENOMEM; + goto out; + } + tty_port_init(&port->port); spin_lock_init(&port->port_lock); - init_waitqueue_head(&port->close_wait); init_waitqueue_head(&port->drain_wait); tasklet_init(&port->push, gs_rx_push, (unsigned long) port); @@ -1051,107 +1056,9 @@ gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) port->port_line_coding = *coding; ports[port_num].port = port; - - return 0; -} - -/** - * gserial_setup - initialize TTY driver for one or more ports - * @g: gadget to associate with these ports - * @count: how many ports to support - * Context: may sleep - * - * The TTY stack needs to know in advance how many devices it should - * plan to manage. Use this call to set up the ports you will be - * exporting through USB. Later, connect them to functions based - * on what configuration is activated by the USB host; and disconnect - * them as appropriate. - * - * An example would be a two-configuration device in which both - * configurations expose port 0, but through different functions. - * One configuration could even expose port 1 while the other - * one doesn't. - * - * Returns negative errno or zero. - */ -int __init gserial_setup(struct usb_gadget *g, unsigned count) -{ - unsigned i; - struct usb_cdc_line_coding coding; - int status; - - if (count == 0 || count > N_PORTS) - return -EINVAL; - - gs_tty_driver = alloc_tty_driver(count); - if (!gs_tty_driver) - return -ENOMEM; - - gs_tty_driver->owner = THIS_MODULE; - gs_tty_driver->driver_name = "g_serial"; - gs_tty_driver->name = PREFIX; - /* uses dynamically assigned dev_t values */ - - gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; - gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; - gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - gs_tty_driver->init_termios = tty_std_termios; - - /* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on - * MS-Windows. Otherwise, most of these flags shouldn't affect - * anything unless we were to actually hook up to a serial line. - */ - gs_tty_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - gs_tty_driver->init_termios.c_ispeed = 9600; - gs_tty_driver->init_termios.c_ospeed = 9600; - - coding.dwDTERate = cpu_to_le32(9600); - coding.bCharFormat = 8; - coding.bParityType = USB_CDC_NO_PARITY; - coding.bDataBits = USB_CDC_1_STOP_BITS; - - tty_set_operations(gs_tty_driver, &gs_tty_ops); - - /* make devices be openable */ - for (i = 0; i < count; i++) { - mutex_init(&ports[i].lock); - status = gs_port_alloc(i, &coding); - if (status) { - count = i; - goto fail; - } - } - n_ports = count; - - /* export the driver ... */ - status = tty_register_driver(gs_tty_driver); - if (status) { - pr_err("%s: cannot register, err %d\n", - __func__, status); - goto fail; - } - - /* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */ - for (i = 0; i < count; i++) { - struct device *tty_dev; - - tty_dev = tty_register_device(gs_tty_driver, i, &g->dev); - if (IS_ERR(tty_dev)) - pr_warning("%s: no classdev for port %d, err %ld\n", - __func__, i, PTR_ERR(tty_dev)); - } - - pr_debug("%s: registered %d ttyGS* device%s\n", __func__, - count, (count == 1) ? "" : "s"); - - return status; -fail: - while (count--) - kfree(ports[count].port); - put_tty_driver(gs_tty_driver); - gs_tty_driver = NULL; - return status; +out: + mutex_unlock(&ports[port_num].lock); + return ret; } static int gs_closed(struct gs_port *port) @@ -1159,59 +1066,82 @@ static int gs_closed(struct gs_port *port) int cond; spin_lock_irq(&port->port_lock); - cond = (port->open_count == 0) && !port->openclose; + cond = (port->port.count == 0) && !port->openclose; spin_unlock_irq(&port->port_lock); return cond; } -/** - * gserial_cleanup - remove TTY-over-USB driver and devices - * Context: may sleep - * - * This is called to free all resources allocated by @gserial_setup(). - * Accordingly, it may need to wait until some open /dev/ files have - * closed. - * - * The caller must have issued @gserial_disconnect() for any ports - * that had previously been connected, so that there is never any - * I/O pending when it's called. - */ -void gserial_cleanup(void) +static void gserial_free_port(struct gs_port *port) +{ + tasklet_kill(&port->push); + /* wait for old opens to finish */ + wait_event(port->port.close_wait, gs_closed(port)); + WARN_ON(port->port_usb != NULL); + tty_port_destroy(&port->port); + kfree(port); +} + +void gserial_free_line(unsigned char port_num) { - unsigned i; struct gs_port *port; - if (!gs_tty_driver) + mutex_lock(&ports[port_num].lock); + if (WARN_ON(!ports[port_num].port)) { + mutex_unlock(&ports[port_num].lock); return; + } + port = ports[port_num].port; + ports[port_num].port = NULL; + mutex_unlock(&ports[port_num].lock); - /* start sysfs and /dev/ttyGS* node removal */ - for (i = 0; i < n_ports; i++) - tty_unregister_device(gs_tty_driver, i); - - for (i = 0; i < n_ports; i++) { - /* prevent new opens */ - mutex_lock(&ports[i].lock); - port = ports[i].port; - ports[i].port = NULL; - mutex_unlock(&ports[i].lock); - - tasklet_kill(&port->push); + gserial_free_port(port); + tty_unregister_device(gs_tty_driver, port_num); +} +EXPORT_SYMBOL_GPL(gserial_free_line); - /* wait for old opens to finish */ - wait_event(port->close_wait, gs_closed(port)); +int gserial_alloc_line(unsigned char *line_num) +{ + struct usb_cdc_line_coding coding; + struct device *tty_dev; + int ret; + int port_num; - WARN_ON(port->port_usb != NULL); + coding.dwDTERate = cpu_to_le32(9600); + coding.bCharFormat = 8; + coding.bParityType = USB_CDC_NO_PARITY; + coding.bDataBits = USB_CDC_1_STOP_BITS; - kfree(port); + for (port_num = 0; port_num < MAX_U_SERIAL_PORTS; port_num++) { + ret = gs_port_alloc(port_num, &coding); + if (ret == -EBUSY) + continue; + if (ret) + return ret; + break; } - n_ports = 0; + if (ret) + return ret; - tty_unregister_driver(gs_tty_driver); - put_tty_driver(gs_tty_driver); - gs_tty_driver = NULL; + /* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */ + + tty_dev = tty_port_register_device(&ports[port_num].port->port, + gs_tty_driver, port_num, NULL); + if (IS_ERR(tty_dev)) { + struct gs_port *port; + pr_err("%s: failed to register tty for port %d, err %ld\n", + __func__, port_num, PTR_ERR(tty_dev)); - pr_debug("%s: cleaned up ttyGS* support\n", __func__); + ret = PTR_ERR(tty_dev); + port = ports[port_num].port; + ports[port_num].port = NULL; + gserial_free_port(port); + goto err; + } + *line_num = port_num; +err: + return ret; } +EXPORT_SYMBOL_GPL(gserial_alloc_line); /** * gserial_connect - notify TTY I/O glue that USB link is active @@ -1228,8 +1158,8 @@ void gserial_cleanup(void) * * Caller needs to have set up the endpoints and USB function in @dev * before calling this, as well as the appropriate (speed-specific) - * endpoint descriptors, and also have set up the TTY driver by calling - * @gserial_setup(). + * endpoint descriptors, and also have allocate @port_num by calling + * @gserial_alloc_line(). * * Returns negative errno or zero. * On success, ep->driver_data will be overwritten. @@ -1240,11 +1170,18 @@ int gserial_connect(struct gserial *gser, u8 port_num) unsigned long flags; int status; - if (!gs_tty_driver || port_num >= n_ports) + if (port_num >= MAX_U_SERIAL_PORTS) return -ENXIO; - /* we "know" gserial_cleanup() hasn't been called */ port = ports[port_num].port; + if (!port) { + pr_err("serial line %d not allocated.\n", port_num); + return -EINVAL; + } + if (port->port_usb) { + pr_err("serial line %d is in use.\n", port_num); + return -EBUSY; + } /* activate the endpoints */ status = usb_ep_enable(gser->in); @@ -1272,7 +1209,7 @@ int gserial_connect(struct gserial *gser, u8 port_num) /* if it's already open, start I/O ... and notify the serial * protocol about open/close status (connect/disconnect). */ - if (port->open_count) { + if (port->port.count) { pr_debug("gserial_connect: start ttyGS%d\n", port->port_num); gs_start_io(port); if (gser->connect) @@ -1291,7 +1228,7 @@ fail_out: gser->in->driver_data = NULL; return status; } - +EXPORT_SYMBOL_GPL(gserial_connect); /** * gserial_disconnect - notify TTY I/O glue that USB link is inactive * @gser: the function, on which gserial_connect() was called @@ -1319,10 +1256,10 @@ void gserial_disconnect(struct gserial *gser) port->port_usb = NULL; gser->ioport = NULL; - if (port->open_count > 0 || port->openclose) { + if (port->port.count > 0 || port->openclose) { wake_up_interruptible(&port->drain_wait); - if (port->port_tty) - tty_hangup(port->port_tty); + if (port->port.tty) + tty_hangup(port->port.tty); } spin_unlock_irqrestore(&port->port_lock, flags); @@ -1335,7 +1272,7 @@ void gserial_disconnect(struct gserial *gser) /* finally, free any unused/unusable I/O buffers */ spin_lock_irqsave(&port->port_lock, flags); - if (port->open_count == 0 && !port->openclose) + if (port->port.count == 0 && !port->openclose) gs_buf_free(&port->port_write_buf); gs_free_requests(gser->out, &port->read_pool, NULL); gs_free_requests(gser->out, &port->read_queue, NULL); @@ -1346,3 +1283,65 @@ void gserial_disconnect(struct gserial *gser) spin_unlock_irqrestore(&port->port_lock, flags); } +EXPORT_SYMBOL_GPL(gserial_disconnect); + +static int userial_init(void) +{ + unsigned i; + int status; + + gs_tty_driver = alloc_tty_driver(MAX_U_SERIAL_PORTS); + if (!gs_tty_driver) + return -ENOMEM; + + gs_tty_driver->driver_name = "g_serial"; + gs_tty_driver->name = PREFIX; + /* uses dynamically assigned dev_t values */ + + gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; + gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; + gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + gs_tty_driver->init_termios = tty_std_termios; + + /* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on + * MS-Windows. Otherwise, most of these flags shouldn't affect + * anything unless we were to actually hook up to a serial line. + */ + gs_tty_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + gs_tty_driver->init_termios.c_ispeed = 9600; + gs_tty_driver->init_termios.c_ospeed = 9600; + + tty_set_operations(gs_tty_driver, &gs_tty_ops); + for (i = 0; i < MAX_U_SERIAL_PORTS; i++) + mutex_init(&ports[i].lock); + + /* export the driver ... */ + status = tty_register_driver(gs_tty_driver); + if (status) { + pr_err("%s: cannot register, err %d\n", + __func__, status); + goto fail; + } + + pr_debug("%s: registered %d ttyGS* device%s\n", __func__, + MAX_U_SERIAL_PORTS, + (MAX_U_SERIAL_PORTS == 1) ? "" : "s"); + + return status; +fail: + put_tty_driver(gs_tty_driver); + gs_tty_driver = NULL; + return status; +} +module_init(userial_init); + +static void userial_cleanup(void) +{ + tty_unregister_driver(gs_tty_driver); + put_tty_driver(gs_tty_driver); + gs_tty_driver = NULL; +} +module_exit(userial_cleanup); + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/u_serial.h b/drivers/usb/gadget/u_serial.h index 9b0fe6450fb..c20210c0bab 100644 --- a/drivers/usb/gadget/u_serial.h +++ b/drivers/usb/gadget/u_serial.h @@ -15,6 +15,13 @@ #include <linux/usb/composite.h> #include <linux/usb/cdc.h> +#define MAX_U_SERIAL_PORTS 4 + +struct f_serial_opts { + struct usb_function_instance func_inst; + u8 port_num; +}; + /* * One non-multiplexed "serial" I/O port ... there can be several of these * on any given USB peripheral device, if it provides enough endpoints. @@ -49,16 +56,15 @@ struct gserial { struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t flags); void gs_free_req(struct usb_ep *, struct usb_request *req); -/* port setup/teardown is handled by gadget driver */ -int gserial_setup(struct usb_gadget *g, unsigned n_ports); -void gserial_cleanup(void); +/* management of individual TTY ports */ +int gserial_alloc_line(unsigned char *port_line); +void gserial_free_line(unsigned char port_line); /* connect/disconnect is handled by individual functions */ int gserial_connect(struct gserial *, u8 port_num); void gserial_disconnect(struct gserial *); /* functions are bound to configurations by a config or gadget driver */ -int acm_bind_config(struct usb_configuration *c, u8 port_num); int gser_bind_config(struct usb_configuration *c, u8 port_num); int obex_bind_config(struct usb_configuration *c, u8 port_num); diff --git a/drivers/usb/gadget/u_audio.c b/drivers/usb/gadget/u_uac1.c index 59ffe1ecf1c..7a55fea4343 100644 --- a/drivers/usb/gadget/u_audio.c +++ b/drivers/usb/gadget/u_uac1.c @@ -1,5 +1,5 @@ /* - * u_audio.c -- ALSA audio utilities for Gadget stack + * u_uac1.c -- ALSA audio utilities for Gadget stack * * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> * Copyright (C) 2008 Analog Devices, Inc @@ -17,7 +17,7 @@ #include <linux/random.h> #include <linux/syscalls.h> -#include "u_audio.h" +#include "u_uac1.h" /* * This component encapsulates the ALSA devices for USB audio gadget @@ -191,7 +191,7 @@ try_again: frames = bytes_to_frames(runtime, count); old_fs = get_fs(); set_fs(KERNEL_DS); - result = snd_pcm_lib_write(snd->substream, buf, frames); + result = snd_pcm_lib_write(snd->substream, (void __user *)buf, frames); if (result != frames) { ERROR(card, "Playback error: %d\n", (int)result); set_fs(old_fs); @@ -240,8 +240,11 @@ static int gaudio_open_snd_dev(struct gaudio *card) snd = &card->playback; snd->filp = filp_open(fn_play, O_WRONLY, 0); if (IS_ERR(snd->filp)) { + int ret = PTR_ERR(snd->filp); + ERROR(card, "No such PCM playback device: %s\n", fn_play); snd->filp = NULL; + return ret; } pcm_file = snd->filp->private_data; snd->substream = pcm_file->substream; @@ -275,17 +278,17 @@ static int gaudio_close_snd_dev(struct gaudio *gau) /* Close control device */ snd = &gau->control; if (snd->filp) - filp_close(snd->filp, current->files); + filp_close(snd->filp, NULL); /* Close PCM playback device and setup substream */ snd = &gau->playback; if (snd->filp) - filp_close(snd->filp, current->files); + filp_close(snd->filp, NULL); /* Close PCM capture device and setup substream */ snd = &gau->capture; if (snd->filp) - filp_close(snd->filp, current->files); + filp_close(snd->filp, NULL); return 0; } diff --git a/drivers/usb/gadget/u_audio.h b/drivers/usb/gadget/u_uac1.h index 08ffce3298e..18c2e729faf 100644 --- a/drivers/usb/gadget/u_audio.h +++ b/drivers/usb/gadget/u_uac1.h @@ -1,5 +1,5 @@ /* - * u_audio.h -- interface to USB gadget "ALSA AUDIO" utilities + * u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities * * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> * Copyright (C) 2008 Analog Devices, Inc diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 0b0d12ccc48..b0d98172bc0 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -22,6 +22,8 @@ #include <linux/device.h> #include <linux/list.h> #include <linux/err.h> +#include <linux/dma-mapping.h> +#include <linux/workqueue.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -49,27 +51,77 @@ static DEFINE_MUTEX(udc_lock); /* ------------------------------------------------------------------------- */ -/** - * usb_gadget_start - tells usb device controller to start up - * @gadget: The gadget we want to get started - * @driver: The driver we want to bind to @gadget - * @bind: The bind function for @driver - * - * This call is issued by the UDC Class driver when it's about - * to register a gadget driver to the device controller, before - * calling gadget driver's bind() method. - * - * It allows the controller to be powered off until strictly - * necessary to have it powered on. - * - * Returns zero on success, else negative errno. - */ -static inline int usb_gadget_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +#ifdef CONFIG_HAS_DMA + +int usb_gadget_map_request(struct usb_gadget *gadget, + struct usb_request *req, int is_in) { - return gadget->ops->start(driver, bind); + if (req->length == 0) + return 0; + + if (req->num_sgs) { + int mapped; + + mapped = dma_map_sg(&gadget->dev, req->sg, req->num_sgs, + is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + if (mapped == 0) { + dev_err(&gadget->dev, "failed to map SGs\n"); + return -EFAULT; + } + + req->num_mapped_sgs = mapped; + } else { + req->dma = dma_map_single(&gadget->dev, req->buf, req->length, + is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + if (dma_mapping_error(&gadget->dev, req->dma)) { + dev_err(&gadget->dev, "failed to map buffer\n"); + return -EFAULT; + } + } + + return 0; } +EXPORT_SYMBOL_GPL(usb_gadget_map_request); + +void usb_gadget_unmap_request(struct usb_gadget *gadget, + struct usb_request *req, int is_in) +{ + if (req->length == 0) + return; + + if (req->num_mapped_sgs) { + dma_unmap_sg(&gadget->dev, req->sg, req->num_mapped_sgs, + is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + req->num_mapped_sgs = 0; + } else { + dma_unmap_single(&gadget->dev, req->dma, req->length, + is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + } +} +EXPORT_SYMBOL_GPL(usb_gadget_unmap_request); + +#endif /* CONFIG_HAS_DMA */ + +/* ------------------------------------------------------------------------- */ + +static void usb_gadget_state_work(struct work_struct *work) +{ + struct usb_gadget *gadget = work_to_gadget(work); + + sysfs_notify(&gadget->dev.kobj, NULL, "state"); +} + +void usb_gadget_set_state(struct usb_gadget *gadget, + enum usb_device_state state) +{ + gadget->state = state; + schedule_work(&gadget->work); +} +EXPORT_SYMBOL_GPL(usb_gadget_set_state); + +/* ------------------------------------------------------------------------- */ /** * usb_gadget_udc_start - tells usb device controller to start up @@ -92,24 +144,6 @@ static inline int usb_gadget_udc_start(struct usb_gadget *gadget, } /** - * usb_gadget_stop - tells usb device controller we don't need it anymore - * @gadget: The device we want to stop activity - * @driver: The driver to unbind from @gadget - * - * This call is issued by the UDC Class driver after calling - * gadget driver's unbind() method. - * - * The details are implementation specific, but it can go as - * far as powering off UDC completely and disable its data - * line pullups. - */ -static inline void usb_gadget_stop(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - gadget->ops->stop(driver); -} - -/** * usb_gadget_udc_stop - tells usb device controller we don't need it anymore * @gadget: The device we want to stop activity * @driver: The driver to unbind from @gadget @@ -144,15 +178,23 @@ static void usb_udc_release(struct device *dev) } static const struct attribute_group *usb_udc_attr_groups[]; + +static void usb_udc_nop_release(struct device *dev) +{ + dev_vdbg(dev, "%s\n", __func__); +} + /** - * usb_add_gadget_udc - adds a new gadget to the udc class driver list - * @parent: the parent device to this udc. Usually the controller - * driver's device. - * @gadget: the gadget to be added to the list + * usb_add_gadget_udc_release - adds a new gadget to the udc class driver list + * @parent: the parent device to this udc. Usually the controller driver's + * device. + * @gadget: the gadget to be added to the list. + * @release: a gadget release function. * * Returns zero on success, negative errno otherwise. */ -int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget) +int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, + void (*release)(struct device *dev)) { struct usb_udc *udc; int ret = -ENOMEM; @@ -161,6 +203,25 @@ int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget) if (!udc) goto err1; + dev_set_name(&gadget->dev, "gadget"); + INIT_WORK(&gadget->work, usb_gadget_state_work); + gadget->dev.parent = parent; + +#ifdef CONFIG_HAS_DMA + dma_set_coherent_mask(&gadget->dev, parent->coherent_dma_mask); + gadget->dev.dma_parms = parent->dma_parms; + gadget->dev.dma_mask = parent->dma_mask; +#endif + + if (release) + gadget->dev.release = release; + else + gadget->dev.release = usb_udc_nop_release; + + ret = device_register(&gadget->dev); + if (ret) + goto err2; + device_initialize(&udc->dev); udc->dev.release = usb_udc_release; udc->dev.class = udc_class; @@ -168,7 +229,7 @@ int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget) udc->dev.parent = parent; ret = dev_set_name(&udc->dev, "%s", kobject_name(&parent->kobj)); if (ret) - goto err2; + goto err3; udc->gadget = gadget; @@ -177,30 +238,43 @@ int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget) ret = device_add(&udc->dev); if (ret) - goto err3; + goto err4; + + usb_gadget_set_state(gadget, USB_STATE_NOTATTACHED); mutex_unlock(&udc_lock); return 0; -err3: + +err4: list_del(&udc->list); mutex_unlock(&udc_lock); -err2: +err3: put_device(&udc->dev); +err2: + put_device(&gadget->dev); + kfree(udc); + err1: return ret; } -EXPORT_SYMBOL_GPL(usb_add_gadget_udc); +EXPORT_SYMBOL_GPL(usb_add_gadget_udc_release); -static int udc_is_newstyle(struct usb_udc *udc) +/** + * usb_add_gadget_udc - adds a new gadget to the udc class driver list + * @parent: the parent device to this udc. Usually the controller + * driver's device. + * @gadget: the gadget to be added to the list + * + * Returns zero on success, negative errno otherwise. + */ +int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget) { - if (udc->gadget->ops->udc_start && udc->gadget->ops->udc_stop) - return 1; - return 0; + return usb_add_gadget_udc_release(parent, gadget, NULL); } - +EXPORT_SYMBOL_GPL(usb_add_gadget_udc); static void usb_gadget_remove_driver(struct usb_udc *udc) { @@ -209,17 +283,14 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); - if (udc_is_newstyle(udc)) { - udc->driver->disconnect(udc->gadget); - udc->driver->unbind(udc->gadget); - usb_gadget_udc_stop(udc->gadget, udc->driver); - usb_gadget_disconnect(udc->gadget); - } else { - usb_gadget_stop(udc->gadget, udc->driver); - } + usb_gadget_disconnect(udc->gadget); + udc->driver->disconnect(udc->gadget); + udc->driver->unbind(udc->gadget); + usb_gadget_udc_stop(udc->gadget, NULL); udc->driver = NULL; udc->dev.driver = NULL; + udc->gadget->dev.driver = NULL; } /** @@ -253,19 +324,79 @@ found: usb_gadget_remove_driver(udc); kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE); + flush_work(&gadget->work); device_unregister(&udc->dev); + device_unregister(&gadget->dev); } EXPORT_SYMBOL_GPL(usb_del_gadget_udc); /* ------------------------------------------------------------------------- */ -int usb_gadget_probe_driver(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *driver) +{ + int ret; + + dev_dbg(&udc->dev, "registering UDC driver [%s]\n", + driver->function); + + udc->driver = driver; + udc->dev.driver = &driver->driver; + udc->gadget->dev.driver = &driver->driver; + + ret = driver->bind(udc->gadget, driver); + if (ret) + goto err1; + ret = usb_gadget_udc_start(udc->gadget, driver); + if (ret) { + driver->unbind(udc->gadget); + goto err1; + } + usb_gadget_connect(udc->gadget); + + kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); + return 0; +err1: + if (ret != -EISNAM) + dev_err(&udc->dev, "failed to start %s: %d\n", + udc->driver->function, ret); + udc->driver = NULL; + udc->dev.driver = NULL; + udc->gadget->dev.driver = NULL; + return ret; +} + +int udc_attach_driver(const char *name, struct usb_gadget_driver *driver) +{ + struct usb_udc *udc = NULL; + int ret = -ENODEV; + + mutex_lock(&udc_lock); + list_for_each_entry(udc, &udc_list, list) { + ret = strcmp(name, dev_name(&udc->dev)); + if (!ret) + break; + } + if (ret) { + ret = -ENODEV; + goto out; + } + if (udc->driver) { + ret = -EBUSY; + goto out; + } + ret = udc_bind_to_driver(udc, driver); +out: + mutex_unlock(&udc_lock); + return ret; +} +EXPORT_SYMBOL_GPL(udc_attach_driver); + +int usb_gadget_probe_driver(struct usb_gadget_driver *driver) { struct usb_udc *udc = NULL; int ret; - if (!driver || !bind || !driver->setup) + if (!driver || !driver->bind || !driver->setup) return -EINVAL; mutex_lock(&udc_lock); @@ -278,41 +409,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, pr_debug("couldn't find an available UDC\n"); mutex_unlock(&udc_lock); return -ENODEV; - found: - dev_dbg(&udc->dev, "registering UDC driver [%s]\n", - driver->function); - - udc->driver = driver; - udc->dev.driver = &driver->driver; - - if (udc_is_newstyle(udc)) { - ret = bind(udc->gadget); - if (ret) - goto err1; - ret = usb_gadget_udc_start(udc->gadget, driver); - if (ret) { - driver->unbind(udc->gadget); - goto err1; - } - usb_gadget_connect(udc->gadget); - } else { - - ret = usb_gadget_start(udc->gadget, driver, bind); - if (ret) - goto err1; - - } - - kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); - mutex_unlock(&udc_lock); - return 0; - -err1: - dev_err(&udc->dev, "failed to start %s: %d\n", - udc->driver->function, ret); - udc->driver = NULL; - udc->dev.driver = NULL; + ret = udc_bind_to_driver(udc, driver); mutex_unlock(&udc_lock); return ret; } @@ -330,6 +428,8 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) list_for_each_entry(udc, &udc_list, list) if (udc->driver == driver) { usb_gadget_remove_driver(udc); + usb_gadget_set_state(udc->gadget, + USB_STATE_NOTATTACHED); ret = 0; break; } @@ -359,9 +459,11 @@ static ssize_t usb_udc_softconn_store(struct device *dev, struct usb_udc *udc = container_of(dev, struct usb_udc, dev); if (sysfs_streq(buf, "connect")) { + usb_gadget_udc_start(udc->gadget, udc->driver); usb_gadget_connect(udc->gadget); } else if (sysfs_streq(buf, "disconnect")) { usb_gadget_disconnect(udc->gadget); + usb_gadget_udc_stop(udc->gadget, udc->driver); } else { dev_err(dev, "unsupported command '%s'\n", buf); return -EINVAL; @@ -371,31 +473,31 @@ static ssize_t usb_udc_softconn_store(struct device *dev, } static DEVICE_ATTR(soft_connect, S_IWUSR, NULL, usb_udc_softconn_store); +static ssize_t state_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_udc *udc = container_of(dev, struct usb_udc, dev); + struct usb_gadget *gadget = udc->gadget; + + return sprintf(buf, "%s\n", usb_state_string(gadget->state)); +} +static DEVICE_ATTR_RO(state); + #define USB_UDC_SPEED_ATTR(name, param) \ -ssize_t usb_udc_##param##_show(struct device *dev, \ +ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \ return snprintf(buf, PAGE_SIZE, "%s\n", \ usb_speed_string(udc->gadget->param)); \ } \ -static DEVICE_ATTR(name, S_IRUSR, usb_udc_##param##_show, NULL) +static DEVICE_ATTR_RO(name) static USB_UDC_SPEED_ATTR(current_speed, speed); static USB_UDC_SPEED_ATTR(maximum_speed, max_speed); -/* TODO: Scheduled for removal in 3.8. */ -static ssize_t usb_udc_is_dualspeed_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct usb_udc *udc = container_of(dev, struct usb_udc, dev); - return snprintf(buf, PAGE_SIZE, "%d\n", - gadget_is_dualspeed(udc->gadget)); -} -static DEVICE_ATTR(is_dualspeed, S_IRUSR, usb_udc_is_dualspeed_show, NULL); - #define USB_UDC_ATTR(name) \ -ssize_t usb_udc_##name##_show(struct device *dev, \ +ssize_t name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \ @@ -403,7 +505,7 @@ ssize_t usb_udc_##name##_show(struct device *dev, \ \ return snprintf(buf, PAGE_SIZE, "%d\n", gadget->name); \ } \ -static DEVICE_ATTR(name, S_IRUGO, usb_udc_##name##_show, NULL) +static DEVICE_ATTR_RO(name) static USB_UDC_ATTR(is_otg); static USB_UDC_ATTR(is_a_peripheral); @@ -414,10 +516,10 @@ static USB_UDC_ATTR(a_alt_hnp_support); static struct attribute *usb_udc_attrs[] = { &dev_attr_srp.attr, &dev_attr_soft_connect.attr, + &dev_attr_state.attr, &dev_attr_current_speed.attr, &dev_attr_maximum_speed.attr, - &dev_attr_is_dualspeed.attr, &dev_attr_is_otg.attr, &dev_attr_is_a_peripheral.attr, &dev_attr_b_hnp_enable.attr, diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c index 4d25b9009ed..73a4dfba0ed 100644 --- a/drivers/usb/gadget/usbstring.c +++ b/drivers/usb/gadget/usbstring.c @@ -9,10 +9,10 @@ #include <linux/errno.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/list.h> #include <linux/string.h> #include <linux/device.h> -#include <linux/init.h> #include <linux/nls.h> #include <linux/usb/ch9.h> @@ -68,4 +68,4 @@ usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf) buf [1] = USB_DT_STRING; return buf [0]; } - +EXPORT_SYMBOL_GPL(usb_gadget_get_string); diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h index bc78c606c12..7a9111de805 100644 --- a/drivers/usb/gadget/uvc.h +++ b/drivers/usb/gadget/uvc.h @@ -28,7 +28,7 @@ struct uvc_request_data { - unsigned int length; + __s32 length; __u8 data[60]; }; @@ -57,6 +57,7 @@ struct uvc_event #include <linux/videodev2.h> #include <linux/version.h> #include <media/v4l2-fh.h> +#include <media/v4l2-device.h> #include "uvc_queue.h" @@ -98,8 +99,6 @@ extern unsigned int uvc_gadget_trace_param; #define DRIVER_VERSION "0.1.0" #define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0) -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - #define UVC_NUM_REQUESTS 4 #define UVC_MAX_REQUEST_SIZE 64 #define UVC_MAX_EVENTS 4 @@ -147,15 +146,18 @@ enum uvc_state struct uvc_device { struct video_device *vdev; + struct v4l2_device v4l2_dev; enum uvc_state state; struct usb_function func; struct uvc_video video; /* Descriptors */ struct { - const struct uvc_descriptor_header * const *control; + const struct uvc_descriptor_header * const *fs_control; + const struct uvc_descriptor_header * const *ss_control; const struct uvc_descriptor_header * const *fs_streaming; const struct uvc_descriptor_header * const *hs_streaming; + const struct uvc_descriptor_header * const *ss_streaming; } desc; unsigned int control_intf; @@ -188,6 +190,7 @@ struct uvc_file_handle * Functions */ +extern void uvc_function_setup_continue(struct uvc_device *uvc); extern void uvc_endpoint_stream(struct uvc_device *dev); extern void uvc_function_connect(struct uvc_device *uvc); diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c index d776adb2da6..1c29bc954db 100644 --- a/drivers/usb/gadget/uvc_queue.c +++ b/drivers/usb/gadget/uvc_queue.c @@ -10,6 +10,7 @@ * (at your option) any later version. */ +#include <linux/atomic.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/list.h> @@ -18,7 +19,9 @@ #include <linux/videodev2.h> #include <linux/vmalloc.h> #include <linux/wait.h> -#include <linux/atomic.h> + +#include <media/v4l2-common.h> +#include <media/videobuf2-vmalloc.h> #include "uvc.h" @@ -28,253 +31,177 @@ * Video queues is initialized by uvc_queue_init(). The function performs * basic initialization of the uvc_video_queue struct and never fails. * - * Video buffer allocation and freeing are performed by uvc_alloc_buffers and - * uvc_free_buffers respectively. The former acquires the video queue lock, - * while the later must be called with the lock held (so that allocation can - * free previously allocated buffers). Trying to free buffers that are mapped - * to user space will return -EBUSY. - * - * Video buffers are managed using two queues. However, unlike most USB video - * drivers that use an in queue and an out queue, we use a main queue to hold - * all queued buffers (both 'empty' and 'done' buffers), and an irq queue to - * hold empty buffers. This design (copied from video-buf) minimizes locking - * in interrupt, as only one queue is shared between interrupt and user - * contexts. - * - * Use cases - * --------- - * - * Unless stated otherwise, all operations that modify the irq buffers queue - * are protected by the irq spinlock. - * - * 1. The user queues the buffers, starts streaming and dequeues a buffer. - * - * The buffers are added to the main and irq queues. Both operations are - * protected by the queue lock, and the later is protected by the irq - * spinlock as well. - * - * The completion handler fetches a buffer from the irq queue and fills it - * with video data. If no buffer is available (irq queue empty), the handler - * returns immediately. - * - * When the buffer is full, the completion handler removes it from the irq - * queue, marks it as ready (UVC_BUF_STATE_DONE) and wakes its wait queue. - * At that point, any process waiting on the buffer will be woken up. If a - * process tries to dequeue a buffer after it has been marked ready, the - * dequeing will succeed immediately. - * - * 2. Buffers are queued, user is waiting on a buffer and the device gets - * disconnected. - * - * When the device is disconnected, the kernel calls the completion handler - * with an appropriate status code. The handler marks all buffers in the - * irq queue as being erroneous (UVC_BUF_STATE_ERROR) and wakes them up so - * that any process waiting on a buffer gets woken up. - * - * Waking up up the first buffer on the irq list is not enough, as the - * process waiting on the buffer might restart the dequeue operation - * immediately. - * + * Video buffers are managed by videobuf2. The driver uses a mutex to protect + * the videobuf2 queue operations by serializing calls to videobuf2 and a + * spinlock to protect the IRQ queue that holds the buffers to be processed by + * the driver. */ -static void -uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type) -{ - mutex_init(&queue->mutex); - spin_lock_init(&queue->irqlock); - INIT_LIST_HEAD(&queue->mainqueue); - INIT_LIST_HEAD(&queue->irqqueue); - queue->type = type; -} - -/* - * Free the video buffers. - * - * This function must be called with the queue lock held. +/* ----------------------------------------------------------------------------- + * videobuf2 queue operations */ -static int uvc_free_buffers(struct uvc_video_queue *queue) + +static int uvc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, + unsigned int *nbuffers, unsigned int *nplanes, + unsigned int sizes[], void *alloc_ctxs[]) { - unsigned int i; + struct uvc_video_queue *queue = vb2_get_drv_priv(vq); + struct uvc_video *video = container_of(queue, struct uvc_video, queue); - for (i = 0; i < queue->count; ++i) { - if (queue->buffer[i].vma_use_count != 0) - return -EBUSY; - } + if (*nbuffers > UVC_MAX_VIDEO_BUFFERS) + *nbuffers = UVC_MAX_VIDEO_BUFFERS; - if (queue->count) { - vfree(queue->mem); - queue->count = 0; - } + *nplanes = 1; + + sizes[0] = video->imagesize; return 0; } -/* - * Allocate the video buffers. - * - * Pages are reserved to make sure they will not be swapped, as they will be - * filled in the URB completion handler. - * - * Buffers will be individually mapped, so they must all be page aligned. - */ -static int -uvc_alloc_buffers(struct uvc_video_queue *queue, unsigned int nbuffers, - unsigned int buflength) +static int uvc_buffer_prepare(struct vb2_buffer *vb) { - unsigned int bufsize = PAGE_ALIGN(buflength); - unsigned int i; - void *mem = NULL; - int ret; + struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue); + struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf); - if (nbuffers > UVC_MAX_VIDEO_BUFFERS) - nbuffers = UVC_MAX_VIDEO_BUFFERS; + if (vb->v4l2_buf.type == V4L2_BUF_TYPE_VIDEO_OUTPUT && + vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Bytes used out of bounds.\n"); + return -EINVAL; + } - mutex_lock(&queue->mutex); + if (unlikely(queue->flags & UVC_QUEUE_DISCONNECTED)) + return -ENODEV; - if ((ret = uvc_free_buffers(queue)) < 0) - goto done; + buf->state = UVC_BUF_STATE_QUEUED; + buf->mem = vb2_plane_vaddr(vb, 0); + buf->length = vb2_plane_size(vb, 0); + if (vb->v4l2_buf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + buf->bytesused = 0; + else + buf->bytesused = vb2_get_plane_payload(vb, 0); - /* Bail out if no buffers should be allocated. */ - if (nbuffers == 0) - goto done; + return 0; +} - /* Decrement the number of buffers until allocation succeeds. */ - for (; nbuffers > 0; --nbuffers) { - mem = vmalloc_32(nbuffers * bufsize); - if (mem != NULL) - break; - } +static void uvc_buffer_queue(struct vb2_buffer *vb) +{ + struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue); + struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf); + unsigned long flags; - if (mem == NULL) { - ret = -ENOMEM; - goto done; - } + spin_lock_irqsave(&queue->irqlock, flags); - for (i = 0; i < nbuffers; ++i) { - memset(&queue->buffer[i], 0, sizeof queue->buffer[i]); - queue->buffer[i].buf.index = i; - queue->buffer[i].buf.m.offset = i * bufsize; - queue->buffer[i].buf.length = buflength; - queue->buffer[i].buf.type = queue->type; - queue->buffer[i].buf.sequence = 0; - queue->buffer[i].buf.field = V4L2_FIELD_NONE; - queue->buffer[i].buf.memory = V4L2_MEMORY_MMAP; - queue->buffer[i].buf.flags = 0; - init_waitqueue_head(&queue->buffer[i].wait); + if (likely(!(queue->flags & UVC_QUEUE_DISCONNECTED))) { + list_add_tail(&buf->queue, &queue->irqqueue); + } else { + /* If the device is disconnected return the buffer to userspace + * directly. The next QBUF call will fail with -ENODEV. + */ + buf->state = UVC_BUF_STATE_ERROR; + vb2_buffer_done(&buf->buf, VB2_BUF_STATE_ERROR); } - queue->mem = mem; - queue->count = nbuffers; - queue->buf_size = bufsize; - ret = nbuffers; + spin_unlock_irqrestore(&queue->irqlock, flags); +} + +static void uvc_wait_prepare(struct vb2_queue *vq) +{ + struct uvc_video_queue *queue = vb2_get_drv_priv(vq); -done: mutex_unlock(&queue->mutex); - return ret; } -static void __uvc_query_buffer(struct uvc_buffer *buf, - struct v4l2_buffer *v4l2_buf) +static void uvc_wait_finish(struct vb2_queue *vq) { - memcpy(v4l2_buf, &buf->buf, sizeof *v4l2_buf); - - if (buf->vma_use_count) - v4l2_buf->flags |= V4L2_BUF_FLAG_MAPPED; - - switch (buf->state) { - case UVC_BUF_STATE_ERROR: - case UVC_BUF_STATE_DONE: - v4l2_buf->flags |= V4L2_BUF_FLAG_DONE; - break; - case UVC_BUF_STATE_QUEUED: - case UVC_BUF_STATE_ACTIVE: - v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED; - break; - case UVC_BUF_STATE_IDLE: - default: - break; - } + struct uvc_video_queue *queue = vb2_get_drv_priv(vq); + + mutex_lock(&queue->mutex); } -static int -uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *v4l2_buf) +static struct vb2_ops uvc_queue_qops = { + .queue_setup = uvc_queue_setup, + .buf_prepare = uvc_buffer_prepare, + .buf_queue = uvc_buffer_queue, + .wait_prepare = uvc_wait_prepare, + .wait_finish = uvc_wait_finish, +}; + +static int uvc_queue_init(struct uvc_video_queue *queue, + enum v4l2_buf_type type) { - int ret = 0; + int ret; - mutex_lock(&queue->mutex); - if (v4l2_buf->index >= queue->count) { - ret = -EINVAL; - goto done; - } + queue->queue.type = type; + queue->queue.io_modes = VB2_MMAP | VB2_USERPTR; + queue->queue.drv_priv = queue; + queue->queue.buf_struct_size = sizeof(struct uvc_buffer); + queue->queue.ops = &uvc_queue_qops; + queue->queue.mem_ops = &vb2_vmalloc_memops; + queue->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC + | V4L2_BUF_FLAG_TSTAMP_SRC_EOF; + ret = vb2_queue_init(&queue->queue); + if (ret) + return ret; - __uvc_query_buffer(&queue->buffer[v4l2_buf->index], v4l2_buf); + mutex_init(&queue->mutex); + spin_lock_init(&queue->irqlock); + INIT_LIST_HEAD(&queue->irqqueue); + queue->flags = 0; -done: + return 0; +} + +/* + * Free the video buffers. + */ +static void uvc_free_buffers(struct uvc_video_queue *queue) +{ + mutex_lock(&queue->mutex); + vb2_queue_release(&queue->queue); mutex_unlock(&queue->mutex); - return ret; } /* - * Queue a video buffer. Attempting to queue a buffer that has already been - * queued will return -EINVAL. + * Allocate the video buffers. */ -static int -uvc_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *v4l2_buf) +static int uvc_alloc_buffers(struct uvc_video_queue *queue, + struct v4l2_requestbuffers *rb) { - struct uvc_buffer *buf; - unsigned long flags; - int ret = 0; + int ret; - uvc_trace(UVC_TRACE_CAPTURE, "Queuing buffer %u.\n", v4l2_buf->index); + mutex_lock(&queue->mutex); + ret = vb2_reqbufs(&queue->queue, rb); + mutex_unlock(&queue->mutex); - if (v4l2_buf->type != queue->type || - v4l2_buf->memory != V4L2_MEMORY_MMAP) { - uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer type (%u) " - "and/or memory (%u).\n", v4l2_buf->type, - v4l2_buf->memory); - return -EINVAL; - } + return ret ? ret : rb->count; +} - mutex_lock(&queue->mutex); - if (v4l2_buf->index >= queue->count) { - uvc_trace(UVC_TRACE_CAPTURE, "[E] Out of range index.\n"); - ret = -EINVAL; - goto done; - } +static int uvc_query_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *buf) +{ + int ret; - buf = &queue->buffer[v4l2_buf->index]; - if (buf->state != UVC_BUF_STATE_IDLE) { - uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state " - "(%u).\n", buf->state); - ret = -EINVAL; - goto done; - } + mutex_lock(&queue->mutex); + ret = vb2_querybuf(&queue->queue, buf); + mutex_unlock(&queue->mutex); - if (v4l2_buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && - v4l2_buf->bytesused > buf->buf.length) { - uvc_trace(UVC_TRACE_CAPTURE, "[E] Bytes used out of bounds.\n"); - ret = -EINVAL; - goto done; - } + return ret; +} - if (v4l2_buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - buf->buf.bytesused = 0; - else - buf->buf.bytesused = v4l2_buf->bytesused; +static int uvc_queue_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *buf) +{ + unsigned long flags; + int ret; - spin_lock_irqsave(&queue->irqlock, flags); - if (queue->flags & UVC_QUEUE_DISCONNECTED) { - spin_unlock_irqrestore(&queue->irqlock, flags); - ret = -ENODEV; + mutex_lock(&queue->mutex); + ret = vb2_qbuf(&queue->queue, buf); + if (ret < 0) goto done; - } - buf->state = UVC_BUF_STATE_QUEUED; + spin_lock_irqsave(&queue->irqlock, flags); ret = (queue->flags & UVC_QUEUE_PAUSED) != 0; queue->flags &= ~UVC_QUEUE_PAUSED; - - list_add_tail(&buf->stream, &queue->mainqueue); - list_add_tail(&buf->queue, &queue->irqqueue); spin_unlock_irqrestore(&queue->irqlock, flags); done: @@ -282,76 +209,19 @@ done: return ret; } -static int uvc_queue_waiton(struct uvc_buffer *buf, int nonblocking) -{ - if (nonblocking) { - return (buf->state != UVC_BUF_STATE_QUEUED && - buf->state != UVC_BUF_STATE_ACTIVE) - ? 0 : -EAGAIN; - } - - return wait_event_interruptible(buf->wait, - buf->state != UVC_BUF_STATE_QUEUED && - buf->state != UVC_BUF_STATE_ACTIVE); -} - /* * Dequeue a video buffer. If nonblocking is false, block until a buffer is * available. */ -static int -uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *v4l2_buf, - int nonblocking) +static int uvc_dequeue_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *buf, int nonblocking) { - struct uvc_buffer *buf; - int ret = 0; - - if (v4l2_buf->type != queue->type || - v4l2_buf->memory != V4L2_MEMORY_MMAP) { - uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer type (%u) " - "and/or memory (%u).\n", v4l2_buf->type, - v4l2_buf->memory); - return -EINVAL; - } + int ret; mutex_lock(&queue->mutex); - if (list_empty(&queue->mainqueue)) { - uvc_trace(UVC_TRACE_CAPTURE, "[E] Empty buffer queue.\n"); - ret = -EINVAL; - goto done; - } - - buf = list_first_entry(&queue->mainqueue, struct uvc_buffer, stream); - if ((ret = uvc_queue_waiton(buf, nonblocking)) < 0) - goto done; - - uvc_trace(UVC_TRACE_CAPTURE, "Dequeuing buffer %u (%u, %u bytes).\n", - buf->buf.index, buf->state, buf->buf.bytesused); - - switch (buf->state) { - case UVC_BUF_STATE_ERROR: - uvc_trace(UVC_TRACE_CAPTURE, "[W] Corrupted data " - "(transmission error).\n"); - ret = -EIO; - case UVC_BUF_STATE_DONE: - buf->state = UVC_BUF_STATE_IDLE; - break; - - case UVC_BUF_STATE_IDLE: - case UVC_BUF_STATE_QUEUED: - case UVC_BUF_STATE_ACTIVE: - default: - uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state %u " - "(driver bug?).\n", buf->state); - ret = -EINVAL; - goto done; - } - - list_del(&buf->stream); - __uvc_query_buffer(buf, v4l2_buf); - -done: + ret = vb2_dqbuf(&queue->queue, buf, nonblocking); mutex_unlock(&queue->mutex); + return ret; } @@ -361,105 +231,47 @@ done: * This function implements video queue polling and is intended to be used by * the device poll handler. */ -static unsigned int -uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, - poll_table *wait) +static unsigned int uvc_queue_poll(struct uvc_video_queue *queue, + struct file *file, poll_table *wait) { - struct uvc_buffer *buf; - unsigned int mask = 0; + unsigned int ret; mutex_lock(&queue->mutex); - if (list_empty(&queue->mainqueue)) - goto done; - - buf = list_first_entry(&queue->mainqueue, struct uvc_buffer, stream); - - poll_wait(file, &buf->wait, wait); - if (buf->state == UVC_BUF_STATE_DONE || - buf->state == UVC_BUF_STATE_ERROR) - mask |= POLLOUT | POLLWRNORM; - -done: + ret = vb2_poll(&queue->queue, file, wait); mutex_unlock(&queue->mutex); - return mask; -} -/* - * VMA operations. - */ -static void uvc_vm_open(struct vm_area_struct *vma) -{ - struct uvc_buffer *buffer = vma->vm_private_data; - buffer->vma_use_count++; + return ret; } -static void uvc_vm_close(struct vm_area_struct *vma) +static int uvc_queue_mmap(struct uvc_video_queue *queue, + struct vm_area_struct *vma) { - struct uvc_buffer *buffer = vma->vm_private_data; - buffer->vma_use_count--; -} + int ret; -static struct vm_operations_struct uvc_vm_ops = { - .open = uvc_vm_open, - .close = uvc_vm_close, -}; + mutex_lock(&queue->mutex); + ret = vb2_mmap(&queue->queue, vma); + mutex_unlock(&queue->mutex); + return ret; +} + +#ifndef CONFIG_MMU /* - * Memory-map a buffer. + * Get unmapped area. * - * This function implements video buffer memory mapping and is intended to be - * used by the device mmap handler. + * NO-MMU arch need this function to make mmap() work correctly. */ -static int -uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma) +static unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue, + unsigned long pgoff) { - struct uvc_buffer *uninitialized_var(buffer); - struct page *page; - unsigned long addr, start, size; - unsigned int i; - int ret = 0; - - start = vma->vm_start; - size = vma->vm_end - vma->vm_start; + unsigned long ret; mutex_lock(&queue->mutex); - - for (i = 0; i < queue->count; ++i) { - buffer = &queue->buffer[i]; - if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) - break; - } - - if (i == queue->count || size != queue->buf_size) { - ret = -EINVAL; - goto done; - } - - /* - * VM_IO marks the area as being an mmaped region for I/O to a - * device. It also prevents the region from being core dumped. - */ - vma->vm_flags |= VM_IO; - - addr = (unsigned long)queue->mem + buffer->buf.m.offset; - while (size > 0) { - page = vmalloc_to_page((void *)addr); - if ((ret = vm_insert_page(vma, start, page)) < 0) - goto done; - - start += PAGE_SIZE; - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - vma->vm_ops = &uvc_vm_ops; - vma->vm_private_data = buffer; - uvc_vm_open(vma); - -done: + ret = vb2_get_unmapped_area(&queue->queue, 0, 0, pgoff, 0); mutex_unlock(&queue->mutex); return ret; } +#endif /* * Cancel the video buffers queue. @@ -484,7 +296,7 @@ static void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect) queue); list_del(&buf->queue); buf->state = UVC_BUF_STATE_ERROR; - wake_up(&buf->wait); + vb2_buffer_done(&buf->buf, VB2_BUF_STATE_ERROR); } /* This must be protected by the irqlock spinlock to avoid race * conditions between uvc_queue_buffer and the disconnection event that @@ -516,26 +328,33 @@ static void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect) */ static int uvc_queue_enable(struct uvc_video_queue *queue, int enable) { - unsigned int i; + unsigned long flags; int ret = 0; mutex_lock(&queue->mutex); if (enable) { - if (uvc_queue_streaming(queue)) { - ret = -EBUSY; + ret = vb2_streamon(&queue->queue, queue->queue.type); + if (ret < 0) goto done; - } + queue->sequence = 0; - queue->flags |= UVC_QUEUE_STREAMING; queue->buf_used = 0; } else { - uvc_queue_cancel(queue, 0); - INIT_LIST_HEAD(&queue->mainqueue); + ret = vb2_streamoff(&queue->queue, queue->queue.type); + if (ret < 0) + goto done; - for (i = 0; i < queue->count; ++i) - queue->buffer[i].state = UVC_BUF_STATE_IDLE; + spin_lock_irqsave(&queue->irqlock, flags); + INIT_LIST_HEAD(&queue->irqqueue); - queue->flags &= ~UVC_QUEUE_STREAMING; + /* + * FIXME: We need to clear the DISCONNECTED flag to ensure that + * applications will be able to queue buffers for the next + * streaming run. However, clearing it here doesn't guarantee + * that the device will be reconnected in the meantime. + */ + queue->flags &= ~UVC_QUEUE_DISCONNECTED; + spin_unlock_irqrestore(&queue->irqlock, flags); } done: @@ -543,32 +362,33 @@ done: return ret; } -static struct uvc_buffer * -uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf) +/* called with &queue_irqlock held.. */ +static struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, + struct uvc_buffer *buf) { struct uvc_buffer *nextbuf; - unsigned long flags; if ((queue->flags & UVC_QUEUE_DROP_INCOMPLETE) && - buf->buf.length != buf->buf.bytesused) { + buf->length != buf->bytesused) { buf->state = UVC_BUF_STATE_QUEUED; - buf->buf.bytesused = 0; + vb2_set_plane_payload(&buf->buf, 0, 0); return buf; } - spin_lock_irqsave(&queue->irqlock, flags); list_del(&buf->queue); if (!list_empty(&queue->irqqueue)) nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer, queue); else nextbuf = NULL; - spin_unlock_irqrestore(&queue->irqlock, flags); - buf->buf.sequence = queue->sequence++; - do_gettimeofday(&buf->buf.timestamp); + buf->buf.v4l2_buf.field = V4L2_FIELD_NONE; + buf->buf.v4l2_buf.sequence = queue->sequence++; + v4l2_get_timestamp(&buf->buf.v4l2_buf.timestamp); + + vb2_set_plane_payload(&buf->buf, 0, buf->bytesused); + vb2_buffer_done(&buf->buf, VB2_BUF_STATE_DONE); - wake_up(&buf->wait); return nextbuf; } diff --git a/drivers/usb/gadget/uvc_queue.h b/drivers/usb/gadget/uvc_queue.h index 1812a8ecc5d..8e76ce982f1 100644 --- a/drivers/usb/gadget/uvc_queue.h +++ b/drivers/usb/gadget/uvc_queue.h @@ -6,6 +6,7 @@ #include <linux/kernel.h> #include <linux/poll.h> #include <linux/videodev2.h> +#include <media/videobuf2-core.h> /* Maximum frame size in bytes, for sanity checking. */ #define UVC_MAX_FRAME_SIZE (16*1024*1024) @@ -25,42 +26,35 @@ enum uvc_buffer_state { }; struct uvc_buffer { - unsigned long vma_use_count; - struct list_head stream; - - /* Touched by interrupt handler. */ - struct v4l2_buffer buf; + struct vb2_buffer buf; struct list_head queue; - wait_queue_head_t wait; + enum uvc_buffer_state state; + void *mem; + unsigned int length; + unsigned int bytesused; }; -#define UVC_QUEUE_STREAMING (1 << 0) -#define UVC_QUEUE_DISCONNECTED (1 << 1) -#define UVC_QUEUE_DROP_INCOMPLETE (1 << 2) -#define UVC_QUEUE_PAUSED (1 << 3) +#define UVC_QUEUE_DISCONNECTED (1 << 0) +#define UVC_QUEUE_DROP_INCOMPLETE (1 << 1) +#define UVC_QUEUE_PAUSED (1 << 2) struct uvc_video_queue { - enum v4l2_buf_type type; + struct vb2_queue queue; + struct mutex mutex; /* Protects queue */ - void *mem; unsigned int flags; __u32 sequence; - unsigned int count; - unsigned int buf_size; unsigned int buf_used; - struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS]; - struct mutex mutex; /* protects buffers and mainqueue */ - spinlock_t irqlock; /* protects irqqueue */ - struct list_head mainqueue; + spinlock_t irqlock; /* Protects flags and irqqueue */ struct list_head irqqueue; }; static inline int uvc_queue_streaming(struct uvc_video_queue *queue) { - return queue->flags & UVC_QUEUE_STREAMING; + return vb2_is_streaming(&queue->queue); } #endif /* __KERNEL__ */ diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c index f6e083b5019..ad48e81155e 100644 --- a/drivers/usb/gadget/uvc_v4l2.c +++ b/drivers/usb/gadget/uvc_v4l2.c @@ -39,11 +39,10 @@ uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data) if (data->length < 0) return usb_ep_set_halt(cdev->gadget->ep0); - req->length = min(uvc->event_length, data->length); + req->length = min_t(unsigned int, uvc->event_length, data->length); req->zero = data->length < uvc->event_length; - req->dma = DMA_ADDR_INVALID; - memcpy(req->buf, data->data, data->length); + memcpy(req->buf, data->data, req->length); return usb_ep_queue(cdev->gadget->ep0, req, GFP_KERNEL); } @@ -148,16 +147,13 @@ uvc_v4l2_release(struct file *file) uvc_function_disconnect(uvc); uvc_video_enable(video, 0); - mutex_lock(&video->queue.mutex); - if (uvc_free_buffers(&video->queue) < 0) - printk(KERN_ERR "uvc_v4l2_release: Unable to free " - "buffers.\n"); - mutex_unlock(&video->queue.mutex); + uvc_free_buffers(&video->queue); file->private_data = NULL; v4l2_fh_del(&handle->vfh); v4l2_fh_exit(&handle->vfh); kfree(handle); + return 0; } @@ -178,9 +174,9 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) struct v4l2_capability *cap = arg; memset(cap, 0, sizeof *cap); - strncpy(cap->driver, "g_uvc", sizeof(cap->driver)); - strncpy(cap->card, cdev->gadget->name, sizeof(cap->card)); - strncpy(cap->bus_info, dev_name(&cdev->gadget->dev), + strlcpy(cap->driver, "g_uvc", sizeof(cap->driver)); + strlcpy(cap->card, cdev->gadget->name, sizeof(cap->card)); + strlcpy(cap->bus_info, dev_name(&cdev->gadget->dev), sizeof cap->bus_info); cap->version = DRIVER_VERSION_NUMBER; cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; @@ -192,7 +188,7 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) { struct v4l2_format *fmt = arg; - if (fmt->type != video->queue.type) + if (fmt->type != video->queue.queue.type) return -EINVAL; return uvc_v4l2_get_format(video, fmt); @@ -202,7 +198,7 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) { struct v4l2_format *fmt = arg; - if (fmt->type != video->queue.type) + if (fmt->type != video->queue.queue.type) return -EINVAL; return uvc_v4l2_set_format(video, fmt); @@ -213,16 +209,13 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) { struct v4l2_requestbuffers *rb = arg; - if (rb->type != video->queue.type || - rb->memory != V4L2_MEMORY_MMAP) + if (rb->type != video->queue.queue.type) return -EINVAL; - ret = uvc_alloc_buffers(&video->queue, rb->count, - video->imagesize); + ret = uvc_alloc_buffers(&video->queue, rb); if (ret < 0) return ret; - rb->count = ret; ret = 0; break; } @@ -231,9 +224,6 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) { struct v4l2_buffer *buf = arg; - if (buf->type != video->queue.type) - return -EINVAL; - return uvc_query_buffer(&video->queue, buf); } @@ -251,24 +241,36 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) { int *type = arg; - if (*type != video->queue.type) + if (*type != video->queue.queue.type) return -EINVAL; - return uvc_video_enable(video, 1); + /* Enable UVC video. */ + ret = uvc_video_enable(video, 1); + if (ret < 0) + return ret; + + /* + * Complete the alternate setting selection setup phase now that + * userspace is ready to provide video frames. + */ + uvc_function_setup_continue(uvc); + uvc->state = UVC_STATE_STREAMING; + + return 0; } case VIDIOC_STREAMOFF: { int *type = arg; - if (*type != video->queue.type) + if (*type != video->queue.queue.type) return -EINVAL; return uvc_video_enable(video, 0); } /* Events */ - case VIDIOC_DQEVENT: + case VIDIOC_DQEVENT: { struct v4l2_event *event = arg; @@ -296,7 +298,7 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (sub->type < UVC_EVENT_FIRST || sub->type > UVC_EVENT_LAST) return -EINVAL; - return v4l2_event_subscribe(&handle->vfh, arg, 2); + return v4l2_event_subscribe(&handle->vfh, arg, 2, NULL); } case VIDIOC_UNSUBSCRIBE_EVENT: @@ -333,17 +335,21 @@ uvc_v4l2_poll(struct file *file, poll_table *wait) { struct video_device *vdev = video_devdata(file); struct uvc_device *uvc = video_get_drvdata(vdev); - struct uvc_file_handle *handle = to_uvc_file_handle(file->private_data); - unsigned int mask = 0; - poll_wait(file, &handle->vfh.wait, wait); - if (v4l2_event_pending(&handle->vfh)) - mask |= POLLPRI; + return uvc_queue_poll(&uvc->video.queue, file, wait); +} - mask |= uvc_queue_poll(&uvc->video.queue, file, wait); +#ifndef CONFIG_MMU +static unsigned long uvc_v4l2_get_unmapped_area(struct file *file, + unsigned long addr, unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); - return mask; + return uvc_queue_get_unmapped_area(&uvc->video.queue, pgoff); } +#endif static struct v4l2_file_operations uvc_v4l2_fops = { .owner = THIS_MODULE, @@ -352,5 +358,8 @@ static struct v4l2_file_operations uvc_v4l2_fops = { .ioctl = uvc_v4l2_ioctl, .mmap = uvc_v4l2_mmap, .poll = uvc_v4l2_poll, +#ifndef CONFIG_MMU + .get_unmapped_area = uvc_v4l2_get_unmapped_area, +#endif }; diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c index b0e53a8ea4f..71e896d4c5a 100644 --- a/drivers/usb/gadget/uvc_video.c +++ b/drivers/usb/gadget/uvc_video.c @@ -32,7 +32,7 @@ uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, data[0] = 2; data[1] = UVC_STREAM_EOH | video->fid; - if (buf->buf.bytesused - video->queue.buf_used <= len - 2) + if (buf->bytesused - video->queue.buf_used <= len - 2) data[1] |= UVC_STREAM_EOF; return 2; @@ -47,8 +47,8 @@ uvc_video_encode_data(struct uvc_video *video, struct uvc_buffer *buf, void *mem; /* Copy video data to the USB buffer. */ - mem = queue->mem + buf->buf.m.offset + queue->buf_used; - nbytes = min((unsigned int)len, buf->buf.bytesused - queue->buf_used); + mem = buf->mem + queue->buf_used; + nbytes = min((unsigned int)len, buf->bytesused - queue->buf_used); memcpy(data, mem, nbytes); queue->buf_used += nbytes; @@ -82,7 +82,7 @@ uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, req->length = video->req_size - len; req->zero = video->payload_size == video->max_payload_size; - if (buf->buf.bytesused == video->queue.buf_used) { + if (buf->bytesused == video->queue.buf_used) { video->queue.buf_used = 0; buf->state = UVC_BUF_STATE_DONE; uvc_queue_next_buffer(&video->queue, buf); @@ -92,7 +92,7 @@ uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, } if (video->payload_size == video->max_payload_size || - buf->buf.bytesused == video->queue.buf_used) + buf->bytesused == video->queue.buf_used) video->payload_size = 0; } @@ -115,7 +115,7 @@ uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, req->length = video->req_size - len; - if (buf->buf.bytesused == video->queue.buf_used) { + if (buf->bytesused == video->queue.buf_used) { video->queue.buf_used = 0; buf->state = UVC_BUF_STATE_DONE; uvc_queue_next_buffer(&video->queue, buf); @@ -161,6 +161,7 @@ static void uvc_video_complete(struct usb_ep *ep, struct usb_request *req) { struct uvc_video *video = req->context; + struct uvc_video_queue *queue = &video->queue; struct uvc_buffer *buf; unsigned long flags; int ret; @@ -169,13 +170,15 @@ uvc_video_complete(struct usb_ep *ep, struct usb_request *req) case 0: break; - case -ESHUTDOWN: + case -ESHUTDOWN: /* disconnect from host. */ printk(KERN_INFO "VS request cancelled.\n"); + uvc_queue_cancel(queue, 1); goto requeue; default: printk(KERN_INFO "VS request completed with status %d.\n", req->status); + uvc_queue_cancel(queue, 0); goto requeue; } @@ -229,13 +232,18 @@ uvc_video_free_requests(struct uvc_video *video) static int uvc_video_alloc_requests(struct uvc_video *video) { + unsigned int req_size; unsigned int i; int ret = -ENOMEM; BUG_ON(video->req_size); + req_size = video->ep->maxpacket + * max_t(unsigned int, video->ep->maxburst, 1) + * (video->ep->mult + 1); + for (i = 0; i < UVC_NUM_REQUESTS; ++i) { - video->req_buffer[i] = kmalloc(video->ep->maxpacket, GFP_KERNEL); + video->req_buffer[i] = kmalloc(req_size, GFP_KERNEL); if (video->req_buffer[i] == NULL) goto error; @@ -245,14 +253,14 @@ uvc_video_alloc_requests(struct uvc_video *video) video->req[i]->buf = video->req_buffer[i]; video->req[i]->length = 0; - video->req[i]->dma = DMA_ADDR_INVALID; video->req[i]->complete = uvc_video_complete; video->req[i]->context = video; list_add_tail(&video->req[i]->list, &video->req_free); } - video->req_size = video->ep->maxpacket; + video->req_size = req_size; + return 0; error: @@ -309,7 +317,8 @@ uvc_video_pump(struct uvc_video *video) video->encode(req, video, buf); /* Queue the USB request */ - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) { + ret = usb_ep_queue(video->ep, req, GFP_ATOMIC); + if (ret < 0) { printk(KERN_INFO "Failed to queue request (%d)\n", ret); usb_ep_set_halt(video->ep); spin_unlock_irqrestore(&video->queue.irqlock, flags); diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c index 668fe128f2e..8cef1e658c2 100644 --- a/drivers/usb/gadget/webcam.c +++ b/drivers/usb/gadget/webcam.c @@ -23,16 +23,12 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - #include "uvc_queue.c" #include "uvc_video.c" #include "uvc_v4l2.c" #include "f_uvc.c" +USB_GADGET_COMPOSITE_OPTIONS(); /* -------------------------------------------------------------------------- * Device descriptor */ @@ -47,13 +43,12 @@ static char webcam_config_label[] = "Video"; /* string IDs are assigned dynamically */ -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 -#define STRING_DESCRIPTION_IDX 2 +#define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX static struct usb_string webcam_strings[] = { - [STRING_MANUFACTURER_IDX].s = webcam_vendor_label, - [STRING_PRODUCT_IDX].s = webcam_product_label, + [USB_GADGET_MANUFACTURER_IDX].s = webcam_vendor_label, + [USB_GADGET_PRODUCT_IDX].s = webcam_product_label, + [USB_GADGET_SERIAL_IDX].s = "", [STRING_DESCRIPTION_IDX].s = webcam_config_label, { } }; @@ -272,7 +267,15 @@ static const struct uvc_color_matching_descriptor uvc_color_matching = { .bMatrixCoefficients = 4, }; -static const struct uvc_descriptor_header * const uvc_control_cls[] = { +static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = { + (const struct uvc_descriptor_header *) &uvc_control_header, + (const struct uvc_descriptor_header *) &uvc_camera_terminal, + (const struct uvc_descriptor_header *) &uvc_processing, + (const struct uvc_descriptor_header *) &uvc_output_terminal, + NULL, +}; + +static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = { (const struct uvc_descriptor_header *) &uvc_control_header, (const struct uvc_descriptor_header *) &uvc_camera_terminal, (const struct uvc_descriptor_header *) &uvc_processing, @@ -304,6 +307,18 @@ static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { NULL, }; +static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = { + (const struct uvc_descriptor_header *) &uvc_input_header, + (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, + (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, + (const struct uvc_descriptor_header *) &uvc_color_matching, + NULL, +}; + /* -------------------------------------------------------------------------- * USB configuration */ @@ -311,8 +326,9 @@ static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { static int __init webcam_config_bind(struct usb_configuration *c) { - return uvc_bind_config(c, uvc_control_cls, uvc_fs_streaming_cls, - uvc_hs_streaming_cls); + return uvc_bind_config(c, uvc_fs_control_cls, uvc_ss_control_cls, + uvc_fs_streaming_cls, uvc_hs_streaming_cls, + uvc_ss_streaming_cls); } static struct usb_configuration webcam_config_driver = { @@ -320,7 +336,7 @@ static struct usb_configuration webcam_config_driver = { .bConfigurationValue = 1, .iConfiguration = 0, /* dynamic */ .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, + .MaxPower = CONFIG_USB_GADGET_VBUS_DRAW, }; static int /* __init_or_exit */ @@ -337,26 +353,22 @@ webcam_bind(struct usb_composite_dev *cdev) /* Allocate string descriptor numbers ... note that string contents * can be overridden by the composite_dev glue. */ - if ((ret = usb_string_id(cdev)) < 0) - goto error; - webcam_strings[STRING_MANUFACTURER_IDX].id = ret; - webcam_device_descriptor.iManufacturer = ret; - - if ((ret = usb_string_id(cdev)) < 0) - goto error; - webcam_strings[STRING_PRODUCT_IDX].id = ret; - webcam_device_descriptor.iProduct = ret; - - if ((ret = usb_string_id(cdev)) < 0) + ret = usb_string_ids_tab(cdev, webcam_strings); + if (ret < 0) goto error; - webcam_strings[STRING_DESCRIPTION_IDX].id = ret; - webcam_config_driver.iConfiguration = ret; + webcam_device_descriptor.iManufacturer = + webcam_strings[USB_GADGET_MANUFACTURER_IDX].id; + webcam_device_descriptor.iProduct = + webcam_strings[USB_GADGET_PRODUCT_IDX].id; + webcam_config_driver.iConfiguration = + webcam_strings[STRING_DESCRIPTION_IDX].id; /* Register our configuration. */ if ((ret = usb_add_config(cdev, &webcam_config_driver, webcam_config_bind)) < 0) goto error; + usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "Webcam Video Gadget\n"); return 0; @@ -369,18 +381,19 @@ error: * Driver */ -static struct usb_composite_driver webcam_driver = { +static __refdata struct usb_composite_driver webcam_driver = { .name = "g_webcam", .dev = &webcam_device_descriptor, .strings = webcam_device_strings, - .max_speed = USB_SPEED_HIGH, + .max_speed = USB_SPEED_SUPER, + .bind = webcam_bind, .unbind = webcam_unbind, }; static int __init webcam_init(void) { - return usb_composite_probe(&webcam_driver, webcam_bind); + return usb_composite_probe(&webcam_driver); } static void __exit diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 31d34832907..134f354ede6 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -10,7 +10,6 @@ * (at your option) any later version. */ - /* * Gadget Zero only needs two bulk endpoints, and is an example of how you * can write a hardware-agnostic gadget driver running inside a USB device. @@ -42,39 +41,19 @@ #include <linux/kernel.h> #include <linux/slab.h> -#include <linux/utsname.h> #include <linux/device.h> +#include <linux/module.h> +#include <linux/err.h> +#include <linux/usb/composite.h> #include "g_zero.h" -#include "gadget_chips.h" - - -/*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "composite.c" -#include "usbstring.c" -#include "config.c" -#include "epautoconf.c" - -#include "f_sourcesink.c" -#include "f_loopback.c" - /*-------------------------------------------------------------------------*/ +USB_GADGET_COMPOSITE_OPTIONS(); #define DRIVER_VERSION "Cinco de Mayo 2008" static const char longname[] = "Gadget Zero"; -unsigned buflen = 4096; -module_param(buflen, uint, 0); - /* * Normally the "loopback" configuration is second (index 1) so * it's not the default. Here's where to change that order, to @@ -84,6 +63,13 @@ module_param(buflen, uint, 0); static bool loopdefault = 0; module_param(loopdefault, bool, S_IRUGO|S_IWUSR); +static struct usb_zero_options gzero_options = { + .isoc_interval = GZERO_ISOC_INTERVAL, + .isoc_maxpacket = GZERO_ISOC_MAXPACKET, + .bulk_buflen = GZERO_BULK_BUFLEN, + .qlen = GZERO_QLEN, +}; + /*-------------------------------------------------------------------------*/ /* Thanks to NetChip Technologies for donating this product ID. @@ -105,10 +91,22 @@ module_param(loopdefault, bool, S_IRUGO|S_IWUSR); * functional coverage for the "USBCV" test harness from USB-IF. * It's always set if OTG mode is enabled. */ -unsigned autoresume = DEFAULT_AUTORESUME; +static unsigned autoresume = DEFAULT_AUTORESUME; module_param(autoresume, uint, S_IRUGO); MODULE_PARM_DESC(autoresume, "zero, or seconds before remote wakeup"); +/* Maximum Autoresume time */ +static unsigned max_autoresume; +module_param(max_autoresume, uint, S_IRUGO); +MODULE_PARM_DESC(max_autoresume, "maximum seconds before remote wakeup"); + +/* Interval between two remote wakeups */ +static unsigned autoresume_interval_ms; +module_param(autoresume_interval_ms, uint, S_IRUGO); +MODULE_PARM_DESC(autoresume_interval_ms, + "milliseconds to increase successive wakeup delays"); + +static unsigned autoresume_step_ms; /*-------------------------------------------------------------------------*/ static struct usb_device_descriptor device_desc = { @@ -134,27 +132,27 @@ static struct usb_otg_descriptor otg_descriptor = { .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; -const struct usb_descriptor_header *otg_desc[] = { +static const struct usb_descriptor_header *otg_desc[] = { (struct usb_descriptor_header *) &otg_descriptor, NULL, }; +#else +#define otg_desc NULL #endif /* string IDs are assigned dynamically */ - -#define STRING_MANUFACTURER_IDX 0 -#define STRING_PRODUCT_IDX 1 -#define STRING_SERIAL_IDX 2 - -static char manufacturer[50]; - /* default serial number takes at least two packets */ static char serial[] = "0123456789.0123456789.0123456789"; +#define USB_GZERO_SS_DESC (USB_GADGET_FIRST_AVAIL_IDX + 0) +#define USB_GZERO_LB_DESC (USB_GADGET_FIRST_AVAIL_IDX + 1) + static struct usb_string strings_dev[] = { - [STRING_MANUFACTURER_IDX].s = manufacturer, - [STRING_PRODUCT_IDX].s = longname, - [STRING_SERIAL_IDX].s = serial, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = longname, + [USB_GADGET_SERIAL_IDX].s = serial, + [USB_GZERO_SS_DESC].s = "source and sink data", + [USB_GZERO_LB_DESC].s = "loop input to output", { } /* end of list */ }; @@ -170,50 +168,6 @@ static struct usb_gadget_strings *dev_strings[] = { /*-------------------------------------------------------------------------*/ -struct usb_request *alloc_ep_req(struct usb_ep *ep) -{ - struct usb_request *req; - - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req) { - req->length = buflen; - req->buf = kmalloc(buflen, GFP_ATOMIC); - if (!req->buf) { - usb_ep_free_request(ep, req); - req = NULL; - } - } - return req; -} - -void free_ep_req(struct usb_ep *ep, struct usb_request *req) -{ - kfree(req->buf); - usb_ep_free_request(ep, req); -} - -static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) -{ - int value; - - if (ep->driver_data) { - value = usb_ep_disable(ep); - if (value < 0) - DBG(cdev, "disable %s --> %d\n", - ep->name, value); - ep->driver_data = NULL; - } -} - -void disable_endpoints(struct usb_composite_dev *cdev, - struct usb_ep *in, struct usb_ep *out) -{ - disable_ep(cdev, in); - disable_ep(cdev, out); -} - -/*-------------------------------------------------------------------------*/ - static struct timer_list autoresume_timer; static void zero_autoresume(unsigned long _c) @@ -241,8 +195,16 @@ static void zero_suspend(struct usb_composite_dev *cdev) return; if (autoresume) { - mod_timer(&autoresume_timer, jiffies + (HZ * autoresume)); - DBG(cdev, "suspend, wakeup in %d seconds\n", autoresume); + if (max_autoresume && + (autoresume_step_ms > max_autoresume * 1000)) + autoresume_step_ms = autoresume * 1000; + + mod_timer(&autoresume_timer, jiffies + + msecs_to_jiffies(autoresume_step_ms)); + DBG(cdev, "suspend, wakeup in %d milliseconds\n", + autoresume_step_ms); + + autoresume_step_ms += autoresume_interval_ms; } else DBG(cdev, "%s\n", __func__); } @@ -255,83 +217,195 @@ static void zero_resume(struct usb_composite_dev *cdev) /*-------------------------------------------------------------------------*/ +static struct usb_configuration loopback_driver = { + .label = "loopback", + .bConfigurationValue = 2, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + /* .iConfiguration = DYNAMIC */ +}; + +static struct usb_function *func_ss; +static struct usb_function_instance *func_inst_ss; + +static int ss_config_setup(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + switch (ctrl->bRequest) { + case 0x5b: + case 0x5c: + return func_ss->setup(func_ss, ctrl); + default: + return -EOPNOTSUPP; + } +} + +static struct usb_configuration sourcesink_driver = { + .label = "source/sink", + .setup = ss_config_setup, + .bConfigurationValue = 3, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + /* .iConfiguration = DYNAMIC */ +}; + +module_param_named(buflen, gzero_options.bulk_buflen, uint, 0); +module_param_named(pattern, gzero_options.pattern, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63, 2 = none"); + +module_param_named(isoc_interval, gzero_options.isoc_interval, uint, + S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_interval, "1 - 16"); + +module_param_named(isoc_maxpacket, gzero_options.isoc_maxpacket, uint, + S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)"); + +module_param_named(isoc_mult, gzero_options.isoc_mult, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_mult, "0 - 2 (hs/ss only)"); + +module_param_named(isoc_maxburst, gzero_options.isoc_maxburst, uint, + S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_maxburst, "0 - 15 (ss only)"); + +static struct usb_function *func_lb; +static struct usb_function_instance *func_inst_lb; + +module_param_named(qlen, gzero_options.qlen, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(qlen, "depth of loopback queue"); + static int __init zero_bind(struct usb_composite_dev *cdev) { - int gcnum; - struct usb_gadget *gadget = cdev->gadget; - int id; + struct f_ss_opts *ss_opts; + struct f_lb_opts *lb_opts; + int status; /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_dev[STRING_MANUFACTURER_IDX].id = id; - device_desc.iManufacturer = id; - - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_dev[STRING_PRODUCT_IDX].id = id; - device_desc.iProduct = id; - - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_dev[STRING_SERIAL_IDX].id = id; - device_desc.iSerialNumber = id; + status = usb_string_ids_tab(cdev, strings_dev); + if (status < 0) + return status; + + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + device_desc.iSerialNumber = strings_dev[USB_GADGET_SERIAL_IDX].id; setup_timer(&autoresume_timer, zero_autoresume, (unsigned long) cdev); + func_inst_ss = usb_get_function_instance("SourceSink"); + if (IS_ERR(func_inst_ss)) + return PTR_ERR(func_inst_ss); + + ss_opts = container_of(func_inst_ss, struct f_ss_opts, func_inst); + ss_opts->pattern = gzero_options.pattern; + ss_opts->isoc_interval = gzero_options.isoc_interval; + ss_opts->isoc_maxpacket = gzero_options.isoc_maxpacket; + ss_opts->isoc_mult = gzero_options.isoc_mult; + ss_opts->isoc_maxburst = gzero_options.isoc_maxburst; + ss_opts->bulk_buflen = gzero_options.bulk_buflen; + + func_ss = usb_get_function(func_inst_ss); + if (IS_ERR(func_ss)) { + status = PTR_ERR(func_ss); + goto err_put_func_inst_ss; + } + + func_inst_lb = usb_get_function_instance("Loopback"); + if (IS_ERR(func_inst_lb)) { + status = PTR_ERR(func_inst_lb); + goto err_put_func_ss; + } + + lb_opts = container_of(func_inst_lb, struct f_lb_opts, func_inst); + lb_opts->bulk_buflen = gzero_options.bulk_buflen; + lb_opts->qlen = gzero_options.qlen; + + func_lb = usb_get_function(func_inst_lb); + if (IS_ERR(func_lb)) { + status = PTR_ERR(func_lb); + goto err_put_func_inst_lb; + } + + sourcesink_driver.iConfiguration = strings_dev[USB_GZERO_SS_DESC].id; + loopback_driver.iConfiguration = strings_dev[USB_GZERO_LB_DESC].id; + + /* support autoresume for remote wakeup testing */ + sourcesink_driver.bmAttributes &= ~USB_CONFIG_ATT_WAKEUP; + loopback_driver.bmAttributes &= ~USB_CONFIG_ATT_WAKEUP; + sourcesink_driver.descriptors = NULL; + loopback_driver.descriptors = NULL; + if (autoresume) { + sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + autoresume_step_ms = autoresume * 1000; + } + + /* support OTG systems */ + if (gadget_is_otg(cdev->gadget)) { + sourcesink_driver.descriptors = otg_desc; + sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + loopback_driver.descriptors = otg_desc; + loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + /* Register primary, then secondary configuration. Note that * SH3 only allows one config... */ if (loopdefault) { - loopback_add(cdev, autoresume != 0); - sourcesink_add(cdev, autoresume != 0); + usb_add_config_only(cdev, &loopback_driver); + usb_add_config_only(cdev, &sourcesink_driver); } else { - sourcesink_add(cdev, autoresume != 0); - loopback_add(cdev, autoresume != 0); + usb_add_config_only(cdev, &sourcesink_driver); + usb_add_config_only(cdev, &loopback_driver); } + status = usb_add_function(&sourcesink_driver, func_ss); + if (status) + goto err_conf_flb; - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum); - else { - /* gadget zero is so simple (for now, no altsettings) that - * it SHOULD NOT have problems with bulk-capable hardware. - * so just warn about unrcognized controllers -- don't panic. - * - * things like configuration and altsetting numbering - * can need hardware-specific attention though. - */ - pr_warning("%s: controller '%s' not recognized\n", - longname, gadget->name); - device_desc.bcdDevice = cpu_to_le16(0x9999); - } + usb_ep_autoconfig_reset(cdev->gadget); + status = usb_add_function(&loopback_driver, func_lb); + if (status) + goto err_conf_flb; + usb_ep_autoconfig_reset(cdev->gadget); + usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "%s, version: " DRIVER_VERSION "\n", longname); - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - return 0; + +err_conf_flb: + usb_put_function(func_lb); + func_lb = NULL; +err_put_func_inst_lb: + usb_put_function_instance(func_inst_lb); + func_inst_lb = NULL; +err_put_func_ss: + usb_put_function(func_ss); + func_ss = NULL; +err_put_func_inst_ss: + usb_put_function_instance(func_inst_ss); + func_inst_ss = NULL; + return status; } static int zero_unbind(struct usb_composite_dev *cdev) { del_timer_sync(&autoresume_timer); + if (!IS_ERR_OR_NULL(func_ss)) + usb_put_function(func_ss); + usb_put_function_instance(func_inst_ss); + if (!IS_ERR_OR_NULL(func_lb)) + usb_put_function(func_lb); + usb_put_function_instance(func_inst_lb); return 0; } -static struct usb_composite_driver zero_driver = { +static __refdata struct usb_composite_driver zero_driver = { .name = "zero", .dev = &device_desc, .strings = dev_strings, .max_speed = USB_SPEED_SUPER, + .bind = zero_bind, .unbind = zero_unbind, .suspend = zero_suspend, .resume = zero_resume, @@ -342,7 +416,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_probe(&zero_driver, zero_bind); + return usb_composite_probe(&zero_driver); } module_init(init); |