From 26ab705396b65a469233a8327ecb51b8aebb6be0 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Sat, 17 May 2008 00:13:56 +0900 Subject: usb-serial: Use ftdi_sio driver for RATOC REX-USB60F This patch reverts 57833ea6b95a3995149f1f6d1a8d8862ab7a0ba2 ("usb-serial: pl2303: add support for RATOC REX-USB60F") and adds support for the device to ftdi_sio driver. Cc: Akira Tsukamoto Cc: stable Signed-off-by: Atsushi Nemoto Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio.h | 6 ++++++ drivers/usb/serial/pl2303.c | 1 - drivers/usb/serial/pl2303.h | 1 - 4 files changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 5b349ece724..3cee6feac17 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -374,6 +374,7 @@ static struct usb_device_id id_table_combined [] = { .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, + { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) }, { }, /* Optional parameter entry */ { } /* Terminating entry */ }; diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h index 504edf8c3a3..a72f2c81d66 100644 --- a/drivers/usb/serial/ftdi_sio.h +++ b/drivers/usb/serial/ftdi_sio.h @@ -591,6 +591,12 @@ #define FIC_VID 0x1457 #define FIC_NEO1973_DEBUG_PID 0x5118 +/* + * RATOC REX-USB60F + */ +#define RATOC_VENDOR_ID 0x0584 +#define RATOC_PRODUCT_ID_USB60F 0xb020 + /* * BmRequestType: 1100 0000b * bRequest: FTDI_E2_READ diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index c605fb68f80..234c5eea95a 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -66,7 +66,6 @@ static struct usb_device_id id_table [] = { { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, - { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) }, { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 10cf872e5ec..3bdefe02050 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -36,7 +36,6 @@ #define RATOC_VENDOR_ID 0x0584 #define RATOC_PRODUCT_ID 0xb000 -#define RATOC_PRODUCT_ID_USB60F 0xb020 #define TRIPP_VENDOR_ID 0x2478 #define TRIPP_PRODUCT_ID 0x2008 -- cgit v1.2.3-18-g5258 From ee53b0ca0153b4f944cb142b5e65c96a1860d765 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 15 May 2008 10:07:44 -0700 Subject: USB: add TELIT HDSPA UC864-E modem to option driver This adds the Telit UC864-E HDSPA modem support to the option driver. This lets their customers comply with the GPL instead of having to use a binary driver from the manufacturer. Cc: Simon Kissel Cc: Nico Erfurth Cc: Andrea Ghezzo Cc: Dietmar Staps Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index e7e016e6033..0e4e63bcd22 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -196,6 +196,9 @@ static int option_send_setup(struct usb_serial_port *port); #define MAXON_VENDOR_ID 0x16d8 +#define TELIT_VENDOR_ID 0x1bc7 +#define TELIT_PRODUCT_UC864E 0x1003 + static struct usb_device_id option_ids[] = { { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) }, { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) }, @@ -304,6 +307,7 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(MAXON_VENDOR_ID, 0x6280) }, /* BP3-USB & BP3-EXT HSDPA */ { USB_DEVICE(0x19d2, 0x0001) }, /* Telstra NextG CDMA */ + { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); -- cgit v1.2.3-18-g5258 From 1b2d23d49cf4b4b1fe3b43d3ffd6077fc4ee9ac6 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 16 May 2008 15:41:40 -0300 Subject: USB: OPTION: fix name of Onda MSA501HS HSDPA modem This fixes the name of the onda MSA501HS device, I guess it is called different things in different countries. Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 0e4e63bcd22..6cecd2c12b1 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -183,6 +183,7 @@ static int option_send_setup(struct usb_serial_port *port); #define AXESSTEL_PRODUCT_MV110H 0x1000 #define ONDA_VENDOR_ID 0x19d2 +#define ONDA_PRODUCT_MSA501HS 0x0001 #define ONDA_PRODUCT_ET502HS 0x0002 #define BANDRICH_VENDOR_ID 0x1A8D @@ -300,13 +301,13 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) }, { USB_DEVICE(AXESSTEL_VENDOR_ID, AXESSTEL_PRODUCT_MV110H) }, + { USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_MSA501HS) }, { USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_ET502HS) }, { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) }, { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) }, { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(MAXON_VENDOR_ID, 0x6280) }, /* BP3-USB & BP3-EXT HSDPA */ - { USB_DEVICE(0x19d2, 0x0001) }, /* Telstra NextG CDMA */ { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) }, { } /* Terminating entry */ }; -- cgit v1.2.3-18-g5258 From 3f886620742edd4e7e037d7d9349be69df0ce59b Mon Sep 17 00:00:00 2001 From: karl beldan Date: Fri, 16 May 2008 11:30:22 +0200 Subject: USB: pxa27x_udc - Fix Oops udc_disable oopses dereferencing udc_command. Signed-off-by: Karl Beldan Acked-by: Robert Jarzmik Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/pxa27x_udc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 499b7a23f35..e02bfd4df3a 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -1526,7 +1526,8 @@ static void udc_disable(struct pxa_udc *udc) ep0_idle(udc); udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT); + if (udc->mach->udc_command) + udc->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT); } /** -- cgit v1.2.3-18-g5258 From 82078234d4023c61b9d88e8be5e795423d17538e Mon Sep 17 00:00:00 2001 From: "Michael F. Robbins" Date: Fri, 16 May 2008 23:48:42 -0400 Subject: USB: serial: ch341: New VID/PID for CH341 USB-serial Recent USB-serial devices using the WinChipHead CH340/CH341 chipset are being shipped with a new vendor/product ID code pair, but an otherwise identical device. (This is confirmed by looking at INF for the included Windows driver.) Patch is tested and working, both with new and old devices. Signed-off-by: Michael F. Robbins Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ch341.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index ba28fdc9ccd..1f7c86bd829 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -28,6 +28,7 @@ static int debug; static struct usb_device_id id_table [] = { { USB_DEVICE(0x4348, 0x5523) }, + { USB_DEVICE(0x1a86, 0x7523) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); -- cgit v1.2.3-18-g5258 From 129bd474a80726247e5b1c61fe66a413e63053bc Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Tue, 20 May 2008 19:08:53 +0200 Subject: USB: ehci-orion: the Orion EHCI root hub does have a Transaction Translator Commit 7329e211b987a493cbcfca0e98c60eb108ab42df ("USB: root hubs don't lie about their number of TTs") requires the various platform EHCI glue modules to set ->has_tt if the root hub has a Transaction Translator. The Orion EHCI root hub does have a Transaction Translator, so set ->has_tt in ehci_orion_setup(). This fixes oopsing on plugging in a low speed device. Signed-off-by: Lennert Buytenhek Acked-by: Nicolas Pitre Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-orion.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index d187d031374..3adfda813a7 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -115,6 +115,8 @@ static int ehci_orion_setup(struct usb_hcd *hcd) if (retval) return retval; + hcd->has_tt = 1; + ehci_reset(ehci); ehci_port_power(ehci, 0); -- cgit v1.2.3-18-g5258 From afba937e540c902c989cd516fd97ea0c8499bb27 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Tue, 13 May 2008 17:01:25 +0200 Subject: USB: CDC WDM driver Signed-off-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/Kconfig | 11 + drivers/usb/class/Makefile | 1 + drivers/usb/class/cdc-wdm.c | 740 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 752 insertions(+) create mode 100644 drivers/usb/class/cdc-wdm.c (limited to 'drivers/usb') diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig index 3a9102d2591..66f17ed88cb 100644 --- a/drivers/usb/class/Kconfig +++ b/drivers/usb/class/Kconfig @@ -29,3 +29,14 @@ config USB_PRINTER To compile this driver as a module, choose M here: the module will be called usblp. +config USB_WDM + tristate "USB Wireless Device Management support" + depends on USB + ---help--- + This driver supports the WMC Device Management functionality + of cell phones compliant to the CDC WMC specification. You can use + AT commands over this device. + + To compile this driver as a module, choose M here: the + module will be called cdc-wdm. + diff --git a/drivers/usb/class/Makefile b/drivers/usb/class/Makefile index cc391e6c2af..535d59a3060 100644 --- a/drivers/usb/class/Makefile +++ b/drivers/usb/class/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_USB_ACM) += cdc-acm.o obj-$(CONFIG_USB_PRINTER) += usblp.o +obj-$(CONFIG_USB_WDM) += cdc-wdm.o diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c new file mode 100644 index 00000000000..107666d4e2e --- /dev/null +++ b/drivers/usb/class/cdc-wdm.c @@ -0,0 +1,740 @@ +/* + * cdc-wdm.c + * + * This driver supports USB CDC WCM Device Management. + * + * Copyright (c) 2007-2008 Oliver Neukum + * + * Some code taken from cdc-acm.c + * + * Released under the GPLv2. + * + * Many thanks to Carl Nordbeck + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Version Information + */ +#define DRIVER_VERSION "v0.02" +#define DRIVER_AUTHOR "Oliver Neukum" + +static struct usb_device_id wdm_ids[] = { + { + .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS | + USB_DEVICE_ID_MATCH_INT_SUBCLASS, + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_DMM + }, + { } +}; + +#define WDM_MINOR_BASE 176 + + +#define WDM_IN_USE 1 +#define WDM_DISCONNECTING 2 +#define WDM_RESULT 3 +#define WDM_READ 4 +#define WDM_INT_STALL 5 +#define WDM_POLL_RUNNING 6 + + +#define WDM_MAX 16 + + +static DEFINE_MUTEX(wdm_mutex); + +/* --- method tables --- */ + +struct wdm_device { + u8 *inbuf; /* buffer for response */ + u8 *outbuf; /* buffer for command */ + u8 *sbuf; /* buffer for status */ + u8 *ubuf; /* buffer for copy to user space */ + + struct urb *command; + struct urb *response; + struct urb *validity; + struct usb_interface *intf; + struct usb_ctrlrequest *orq; + struct usb_ctrlrequest *irq; + spinlock_t iuspin; + + unsigned long flags; + u16 bufsize; + u16 wMaxCommand; + u16 wMaxPacketSize; + u16 bMaxPacketSize0; + __le16 inum; + int reslength; + int length; + int read; + int count; + dma_addr_t shandle; + dma_addr_t ihandle; + struct mutex wlock; + struct mutex rlock; + wait_queue_head_t wait; + struct work_struct rxwork; + int werr; + int rerr; +}; + +static struct usb_driver wdm_driver; + +/* --- callbacks --- */ +static void wdm_out_callback(struct urb *urb) +{ + struct wdm_device *desc; + desc = urb->context; + spin_lock(&desc->iuspin); + desc->werr = urb->status; + spin_unlock(&desc->iuspin); + clear_bit(WDM_IN_USE, &desc->flags); + kfree(desc->outbuf); + wake_up(&desc->wait); +} + +static void wdm_in_callback(struct urb *urb) +{ + struct wdm_device *desc = urb->context; + int status = urb->status; + + spin_lock(&desc->iuspin); + + if (status) { + switch (status) { + case -ENOENT: + dev_dbg(&desc->intf->dev, + "nonzero urb status received: -ENOENT"); + break; + case -ECONNRESET: + dev_dbg(&desc->intf->dev, + "nonzero urb status received: -ECONNRESET"); + break; + case -ESHUTDOWN: + dev_dbg(&desc->intf->dev, + "nonzero urb status received: -ESHUTDOWN"); + break; + case -EPIPE: + err("nonzero urb status received: -EPIPE"); + break; + default: + err("Unexpected error %d", status); + break; + } + } + + desc->rerr = status; + desc->reslength = urb->actual_length; + memmove(desc->ubuf + desc->length, desc->inbuf, desc->reslength); + desc->length += desc->reslength; + wake_up(&desc->wait); + + set_bit(WDM_READ, &desc->flags); + spin_unlock(&desc->iuspin); +} + +static void wdm_int_callback(struct urb *urb) +{ + int rv = 0; + int status = urb->status; + struct wdm_device *desc; + struct usb_ctrlrequest *req; + struct usb_cdc_notification *dr; + + desc = urb->context; + req = desc->irq; + dr = (struct usb_cdc_notification *)desc->sbuf; + + if (status) { + switch (status) { + case -ESHUTDOWN: + case -ENOENT: + case -ECONNRESET: + return; /* unplug */ + case -EPIPE: + set_bit(WDM_INT_STALL, &desc->flags); + err("Stall on int endpoint"); + goto sw; /* halt is cleared in work */ + default: + err("nonzero urb status received: %d", status); + break; + } + } + + if (urb->actual_length < sizeof(struct usb_cdc_notification)) { + err("wdm_int_callback - %d bytes", urb->actual_length); + goto exit; + } + + switch (dr->bNotificationType) { + case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: + dev_dbg(&desc->intf->dev, + "NOTIFY_RESPONSE_AVAILABLE received: index %d len %d", + dr->wIndex, dr->wLength); + break; + + case USB_CDC_NOTIFY_NETWORK_CONNECTION: + + dev_dbg(&desc->intf->dev, + "NOTIFY_NETWORK_CONNECTION %s network", + dr->wValue ? "connected to" : "disconnected from"); + goto exit; + default: + clear_bit(WDM_POLL_RUNNING, &desc->flags); + err("unknown notification %d received: index %d len %d", + dr->bNotificationType, dr->wIndex, dr->wLength); + goto exit; + } + + req->bRequestType = (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE); + req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; + req->wValue = 0; + req->wIndex = desc->inum; + req->wLength = cpu_to_le16(desc->bMaxPacketSize0); + + usb_fill_control_urb( + desc->response, + interface_to_usbdev(desc->intf), + /* using common endpoint 0 */ + usb_rcvctrlpipe(interface_to_usbdev(desc->intf), 0), + (unsigned char *)req, + desc->inbuf, + desc->bMaxPacketSize0, + wdm_in_callback, + desc + ); + desc->response->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + spin_lock(&desc->iuspin); + clear_bit(WDM_READ, &desc->flags); + if (!test_bit(WDM_DISCONNECTING, &desc->flags)) { + rv = usb_submit_urb(desc->response, GFP_ATOMIC); + dev_dbg(&desc->intf->dev, "%s: usb_submit_urb %d", + __func__, rv); + } + spin_unlock(&desc->iuspin); + if (rv < 0) { + if (rv == -EPERM) + return; + if (rv == -ENOMEM) { +sw: + rv = schedule_work(&desc->rxwork); + if (rv) + err("Cannot schedule work"); + } + } +exit: + rv = usb_submit_urb(urb, GFP_ATOMIC); + if (rv) + err("%s - usb_submit_urb failed with result %d", + __func__, rv); + +} + +static void kill_urbs(struct wdm_device *desc) +{ + usb_kill_urb(desc->command); + usb_kill_urb(desc->validity); + usb_kill_urb(desc->response); +} + +static void free_urbs(struct wdm_device *desc) +{ + usb_free_urb(desc->validity); + usb_free_urb(desc->response); + usb_free_urb(desc->command); +} + +static void cleanup(struct wdm_device *desc) +{ + usb_buffer_free(interface_to_usbdev(desc->intf), + desc->wMaxPacketSize, + desc->sbuf, + desc->validity->transfer_dma); + usb_buffer_free(interface_to_usbdev(desc->intf), + desc->wMaxPacketSize, + desc->inbuf, + desc->response->transfer_dma); + kfree(desc->orq); + kfree(desc->irq); + kfree(desc->ubuf); + free_urbs(desc); + kfree(desc); +} + +static ssize_t wdm_write +(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) +{ + u8 *buf; + int rv = -EMSGSIZE, r, we; + struct wdm_device *desc = file->private_data; + struct usb_ctrlrequest *req; + + if (count > desc->wMaxCommand) + count = desc->wMaxCommand; + + spin_lock_irq(&desc->iuspin); + we = desc->werr; + desc->werr = 0; + spin_unlock_irq(&desc->iuspin); + if (we < 0) + return -EIO; + + r = mutex_lock_interruptible(&desc->wlock); /* concurrent writes */ + rv = -ERESTARTSYS; + if (r) + goto outnl; + + r = wait_event_interruptible(desc->wait, !test_bit(WDM_IN_USE, + &desc->flags)); + if (r < 0) + goto out; + + if (test_bit(WDM_DISCONNECTING, &desc->flags)) { + rv = -ENODEV; + goto out; + } + + desc->outbuf = buf = kmalloc(count, GFP_KERNEL); + if (!buf) { + rv = -ENOMEM; + goto out; + } + + r = copy_from_user(buf, buffer, count); + if (r > 0) { + kfree(buf); + rv = -EFAULT; + goto out; + } + + req = desc->orq; + usb_fill_control_urb( + desc->command, + interface_to_usbdev(desc->intf), + /* using common endpoint 0 */ + usb_sndctrlpipe(interface_to_usbdev(desc->intf), 0), + (unsigned char *)req, + buf, + count, + wdm_out_callback, + desc + ); + + req->bRequestType = (USB_DIR_OUT | USB_TYPE_CLASS | + USB_RECIP_INTERFACE); + req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; + req->wValue = 0; + req->wIndex = desc->inum; + req->wLength = cpu_to_le16(count); + set_bit(WDM_IN_USE, &desc->flags); + + rv = usb_submit_urb(desc->command, GFP_KERNEL); + if (rv < 0) { + kfree(buf); + clear_bit(WDM_IN_USE, &desc->flags); + } else { + dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d", + req->wIndex); + } +out: + mutex_unlock(&desc->wlock); +outnl: + return rv < 0 ? rv : count; +} + +static ssize_t wdm_read +(struct file *file, char __user *buffer, size_t count, loff_t *ppos) +{ + int rv, cntr; + int i = 0; + struct wdm_device *desc = file->private_data; + + + rv = mutex_lock_interruptible(&desc->rlock); /*concurrent reads */ + if (rv < 0) + return -ERESTARTSYS; + + if (desc->length == 0) { + desc->read = 0; +retry: + i++; + rv = wait_event_interruptible(desc->wait, + test_bit(WDM_READ, &desc->flags)); + + if (rv < 0) { + rv = -ERESTARTSYS; + goto err; + } + + spin_lock_irq(&desc->iuspin); + + if (desc->rerr) { /* read completed, error happened */ + int t = desc->rerr; + desc->rerr = 0; + spin_unlock_irq(&desc->iuspin); + err("reading had resulted in %d", t); + rv = -EIO; + goto err; + } + /* + * recheck whether we've lost the race + * against the completion handler + */ + if (!test_bit(WDM_READ, &desc->flags)) { /* lost race */ + spin_unlock_irq(&desc->iuspin); + goto retry; + } + if (!desc->reslength) { /* zero length read */ + spin_unlock_irq(&desc->iuspin); + goto retry; + } + clear_bit(WDM_READ, &desc->flags); + spin_unlock_irq(&desc->iuspin); + } + + cntr = count > desc->length ? desc->length : count; + rv = copy_to_user(buffer, desc->ubuf, cntr); + if (rv > 0) { + rv = -EFAULT; + goto err; + } + + for (i = 0; i < desc->length - cntr; i++) + desc->ubuf[i] = desc->ubuf[i + cntr]; + + desc->length -= cntr; + rv = cntr; + +err: + mutex_unlock(&desc->rlock); + if (rv < 0) + err("wdm_read: exit error"); + return rv; +} + +static int wdm_flush(struct file *file, fl_owner_t id) +{ + struct wdm_device *desc = file->private_data; + + wait_event(desc->wait, !test_bit(WDM_IN_USE, &desc->flags)); + if (desc->werr < 0) + err("Error in flush path: %d", desc->werr); + + return desc->werr; +} + +static unsigned int wdm_poll(struct file *file, struct poll_table_struct *wait) +{ + struct wdm_device *desc = file->private_data; + unsigned long flags; + unsigned int mask = 0; + + spin_lock_irqsave(&desc->iuspin, flags); + if (test_bit(WDM_DISCONNECTING, &desc->flags)) { + mask = POLLERR; + spin_unlock_irqrestore(&desc->iuspin, flags); + goto desc_out; + } + if (test_bit(WDM_READ, &desc->flags)) + mask = POLLIN | POLLRDNORM; + if (desc->rerr || desc->werr) + mask |= POLLERR; + if (!test_bit(WDM_IN_USE, &desc->flags)) + mask |= POLLOUT | POLLWRNORM; + spin_unlock_irqrestore(&desc->iuspin, flags); + + poll_wait(file, &desc->wait, wait); + +desc_out: + return mask; +} + +static int wdm_open(struct inode *inode, struct file *file) +{ + int minor = iminor(inode); + int rv = -ENODEV; + struct usb_interface *intf; + struct wdm_device *desc; + + mutex_lock(&wdm_mutex); + intf = usb_find_interface(&wdm_driver, minor); + if (!intf) + goto out; + + desc = usb_get_intfdata(intf); + if (test_bit(WDM_DISCONNECTING, &desc->flags)) + goto out; + + desc->count++; + file->private_data = desc; + + rv = usb_submit_urb(desc->validity, GFP_KERNEL); + + if (rv < 0) { + desc->count--; + err("Error submitting int urb - %d", rv); + goto out; + } + rv = 0; + +out: + mutex_unlock(&wdm_mutex); + return rv; +} + +static int wdm_release(struct inode *inode, struct file *file) +{ + struct wdm_device *desc = file->private_data; + + mutex_lock(&wdm_mutex); + desc->count--; + if (!desc->count) { + dev_dbg(&desc->intf->dev, "wdm_release: cleanup"); + kill_urbs(desc); + } + mutex_unlock(&wdm_mutex); + return 0; +} + +static const struct file_operations wdm_fops = { + .owner = THIS_MODULE, + .read = wdm_read, + .write = wdm_write, + .open = wdm_open, + .flush = wdm_flush, + .release = wdm_release, + .poll = wdm_poll +}; + +static struct usb_class_driver wdm_class = { + .name = "cdc-wdm%d", + .fops = &wdm_fops, + .minor_base = WDM_MINOR_BASE, +}; + +/* --- error handling --- */ +static void wdm_rxwork(struct work_struct *work) +{ + struct wdm_device *desc = container_of(work, struct wdm_device, rxwork); + unsigned long flags; + int rv; + + spin_lock_irqsave(&desc->iuspin, flags); + if (test_bit(WDM_DISCONNECTING, &desc->flags)) { + spin_unlock_irqrestore(&desc->iuspin, flags); + } else { + spin_unlock_irqrestore(&desc->iuspin, flags); + rv = usb_submit_urb(desc->response, GFP_KERNEL); + if (rv < 0 && rv != -EPERM) { + spin_lock_irqsave(&desc->iuspin, flags); + if (!test_bit(WDM_DISCONNECTING, &desc->flags)) + schedule_work(&desc->rxwork); + spin_unlock_irqrestore(&desc->iuspin, flags); + } + } +} + +/* --- hotplug --- */ + +static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + int rv = -EINVAL; + struct usb_device *udev = interface_to_usbdev(intf); + struct wdm_device *desc; + struct usb_host_interface *iface; + struct usb_endpoint_descriptor *ep; + struct usb_cdc_dmm_desc *dmhd; + u8 *buffer = intf->altsetting->extra; + int buflen = intf->altsetting->extralen; + u16 maxcom = 0; + + if (!buffer) + goto out; + + while (buflen > 0) { + if (buffer [1] != USB_DT_CS_INTERFACE) { + err("skipping garbage"); + goto next_desc; + } + + switch (buffer [2]) { + case USB_CDC_HEADER_TYPE: + break; + case USB_CDC_DMM_TYPE: + dmhd = (struct usb_cdc_dmm_desc *)buffer; + maxcom = le16_to_cpu(dmhd->wMaxCommand); + dev_dbg(&intf->dev, + "Finding maximum buffer length: %d", maxcom); + break; + default: + err("Ignoring extra header, type %d, length %d", + buffer[2], buffer[0]); + break; + } +next_desc: + buflen -= buffer[0]; + buffer += buffer[0]; + } + + rv = -ENOMEM; + desc = kzalloc(sizeof(struct wdm_device), GFP_KERNEL); + if (!desc) + goto out; + mutex_init(&desc->wlock); + mutex_init(&desc->rlock); + spin_lock_init(&desc->iuspin); + init_waitqueue_head(&desc->wait); + desc->wMaxCommand = maxcom; + desc->inum = cpu_to_le16((u16)intf->cur_altsetting->desc.bInterfaceNumber); + desc->intf = intf; + INIT_WORK(&desc->rxwork, wdm_rxwork); + + iface = &intf->altsetting[0]; + ep = &iface->endpoint[0].desc; + if (!usb_endpoint_is_int_in(ep)) { + rv = -EINVAL; + goto err; + } + + desc->wMaxPacketSize = ep->wMaxPacketSize; + desc->bMaxPacketSize0 = cpu_to_le16(udev->descriptor.bMaxPacketSize0); + + desc->orq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + if (!desc->orq) + goto err; + desc->irq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + if (!desc->irq) + goto err; + + desc->validity = usb_alloc_urb(0, GFP_KERNEL); + if (!desc->validity) + goto err; + + desc->response = usb_alloc_urb(0, GFP_KERNEL); + if (!desc->response) + goto err; + + desc->command = usb_alloc_urb(0, GFP_KERNEL); + if (!desc->command) + goto err; + + desc->ubuf = kmalloc(desc->wMaxCommand, GFP_KERNEL); + if (!desc->ubuf) + goto err; + + desc->sbuf = usb_buffer_alloc(interface_to_usbdev(intf), + desc->wMaxPacketSize, + GFP_KERNEL, + &desc->validity->transfer_dma); + if (!desc->sbuf) + goto err; + + desc->inbuf = usb_buffer_alloc(interface_to_usbdev(intf), + desc->bMaxPacketSize0, + GFP_KERNEL, + &desc->response->transfer_dma); + if (!desc->inbuf) + goto err2; + + usb_fill_int_urb( + desc->validity, + interface_to_usbdev(intf), + usb_rcvintpipe(interface_to_usbdev(intf), ep->bEndpointAddress), + desc->sbuf, + desc->wMaxPacketSize, + wdm_int_callback, + desc, + ep->bInterval + ); + desc->validity->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + usb_set_intfdata(intf, desc); + rv = usb_register_dev(intf, &wdm_class); + dev_info(&intf->dev, "cdc-wdm%d: USB WDM device\n", + intf->minor - WDM_MINOR_BASE); + if (rv < 0) + goto err; +out: + return rv; +err2: + usb_buffer_free(interface_to_usbdev(desc->intf), + desc->wMaxPacketSize, + desc->sbuf, + desc->validity->transfer_dma); +err: + free_urbs(desc); + kfree(desc->ubuf); + kfree(desc->orq); + kfree(desc->irq); + kfree(desc); + return rv; +} + +static void wdm_disconnect(struct usb_interface *intf) +{ + struct wdm_device *desc; + unsigned long flags; + + usb_deregister_dev(intf, &wdm_class); + mutex_lock(&wdm_mutex); + desc = usb_get_intfdata(intf); + + /* the spinlock makes sure no new urbs are generated in the callbacks */ + spin_lock_irqsave(&desc->iuspin, flags); + set_bit(WDM_DISCONNECTING, &desc->flags); + set_bit(WDM_READ, &desc->flags); + clear_bit(WDM_IN_USE, &desc->flags); + spin_unlock_irqrestore(&desc->iuspin, flags); + cancel_work_sync(&desc->rxwork); + kill_urbs(desc); + wake_up_all(&desc->wait); + if (!desc->count) + cleanup(desc); + mutex_unlock(&wdm_mutex); +} + +static struct usb_driver wdm_driver = { + .name = "cdc_wdm", + .probe = wdm_probe, + .disconnect = wdm_disconnect, + .id_table = wdm_ids, +}; + +/* --- low level module stuff --- */ + +static int __init wdm_init(void) +{ + int rv; + + rv = usb_register(&wdm_driver); + + return rv; +} + +static void __exit wdm_exit(void) +{ + usb_deregister(&wdm_driver); +} + +module_init(wdm_init); +module_exit(wdm_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION("USB Abstract Control Model driver for " + "USB WCM Device Management"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-18-g5258