diff options
Diffstat (limited to 'drivers/usb/gadget/dwc_otg')
19 files changed, 22623 insertions, 0 deletions
diff --git a/drivers/usb/gadget/dwc_otg/Makefile b/drivers/usb/gadget/dwc_otg/Makefile new file mode 100644 index 00000000000..4d690a46658 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for DWC_otg Highspeed USB controller driver +# + +KBUILD_CPPFLAGS += -Dlinux + +obj-$(CONFIG_USB_DWC_OTG) += dwc_otg.o + +dwc_otg-y := dwc_otg_driver.o dwc_otg_attr.o dwc_otg_cil.o \ + dwc_otg_cil_intr.o dwc_otg_pcd.o dwc_otg_pcd_intr.o \ + dwc_otg_hcd.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o +dwc_otg-$(CONFIG_DWC_USE_PLB_DMA) += ppc4xx_dma.o diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_attr.c b/drivers/usb/gadget/dwc_otg/dwc_otg_attr.c new file mode 100644 index 00000000000..a3e1e7dff55 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_attr.c @@ -0,0 +1,785 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_attr.c $ + * $Revision: #5 $ + * $Date: 2005/09/15 $ + * $Change: 537387 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +/** @file + * + * The diagnostic interface will provide access to the controller for + * bringing up the hardware and testing. The Linux driver attributes + * feature will be used to provide the Linux Diagnostic + * Interface. These attributes are accessed through sysfs. + */ + +/** @page "Linux Module Attributes" + * + * The Linux module attributes feature is used to provide the Linux + * Diagnostic Interface. These attributes are accessed through sysfs. + * The diagnostic interface will provide access to the controller for + * bringing up the hardware and testing. + + + The following table shows the attributes. + <table> + <tr> + <td><b> Name</b></td> + <td><b> Description</b></td> + <td><b> Access</b></td> + </tr> + + <tr> + <td> mode </td> + <td> Returns the current mode: 0 for device mode, 1 for host mode</td> + <td> Read</td> + </tr> + + <tr> + <td> hnpcapable </td> + <td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register. + Read returns the current value.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> srpcapable </td> + <td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register. + Read returns the current value.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> hnp </td> + <td> Initiates the Host Negotiation Protocol. Read returns the status.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> srp </td> + <td> Initiates the Session Request Protocol. Read returns the status.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> buspower </td> + <td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> bussuspend </td> + <td> Suspends the USB bus.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> busconnected </td> + <td> Gets the connection status of the bus</td> + <td> Read</td> + </tr> + + <tr> + <td> gotgctl </td> + <td> Gets or sets the Core Control Status Register.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> gusbcfg </td> + <td> Gets or sets the Core USB Configuration Register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> grxfsiz </td> + <td> Gets or sets the Receive FIFO Size Register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> gnptxfsiz </td> + <td> Gets or sets the non-periodic Transmit Size Register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> gpvndctl </td> + <td> Gets or sets the PHY Vendor Control Register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> ggpio </td> + <td> Gets the value in the lower 16-bits of the General Purpose IO Register + or sets the upper 16 bits.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> guid </td> + <td> Gets or sets the value of the User ID Register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> gsnpsid </td> + <td> Gets the value of the Synopsys ID Regester</td> + <td> Read</td> + </tr> + + <tr> + <td> devspeed </td> + <td> Gets or sets the device speed setting in the DCFG register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> enumspeed </td> + <td> Gets the device enumeration Speed.</td> + <td> Read</td> + </tr> + + <tr> + <td> hptxfsiz </td> + <td> Gets the value of the Host Periodic Transmit FIFO</td> + <td> Read</td> + </tr> + + <tr> + <td> hprt0 </td> + <td> Gets or sets the value in the Host Port Control and Status Register</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> regoffset </td> + <td> Sets the register offset for the next Register Access</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> regvalue </td> + <td> Gets or sets the value of the register at the offset in the regoffset attribute.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> remote_wakeup </td> + <td> On read, shows the status of Remote Wakeup. On write, initiates a remote + wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote + Wakeup signalling bit in the Device Control Register is set for 1 + milli-second.</td> + <td> Read/Write</td> + </tr> + + <tr> + <td> regdump </td> + <td> Dumps the contents of core registers.</td> + <td> Read</td> + </tr> + + <tr> + <td> hcddump </td> + <td> Dumps the current HCD state.</td> + <td> Read</td> + </tr> + + <tr> + <td> hcd_frrem </td> + <td> Shows the average value of the Frame Remaining + field in the Host Frame Number/Frame Remaining register when an SOF interrupt + occurs. This can be used to determine the average interrupt latency. Also + shows the average Frame Remaining value for start_transfer and the "a" and + "b" sample points. The "a" and "b" sample points may be used during debugging + bto determine how long it takes to execute a section of the HCD code.</td> + <td> Read</td> + </tr> + + <tr> + <td> rd_reg_test </td> + <td> Displays the time required to read the GNPTXFSIZ register many times + (the output shows the number of times the register is read). + <td> Read</td> + </tr> + + <tr> + <td> wr_reg_test </td> + <td> Displays the time required to write the GNPTXFSIZ register many times + (the output shows the number of times the register is written). + <td> Read</td> + </tr> + + </table> + + Example usage: + To get the current mode: + cat /sys/devices/lm0/mode + + To power down the USB: + echo 0 > /sys/devices/lm0/buspower + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/stat.h> /* permission constants */ + +#include <asm/io.h> + +#include "linux/dwc_otg_plat.h" +#include "dwc_otg_attr.h" +#include "dwc_otg_driver.h" +#include "dwc_otg_pcd.h" +#include "dwc_otg_hcd.h" + +/* + * MACROs for defining sysfs attribute + */ +#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \ +{ \ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\ + uint32_t val; \ + val = dwc_read_reg32 (_addr_); \ + val = (val & (_mask_)) >> _shift_; \ + return sprintf (buf, "%s = 0x%x\n", _string_, val); \ +} +#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\ + uint32_t set = simple_strtoul(buf, NULL, 16); \ + uint32_t clear = set; \ + clear = ((~clear) << _shift_) & _mask_; \ + set = (set << _shift_) & _mask_; \ + dev_dbg(_dev, "Storing Address=0x%08x Set=0x%08x Clear=0x%08x\n", (uint32_t)_addr_, set, clear); \ + dwc_modify_reg32(_addr_, clear, set); \ + return count; \ +} + +#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store); + +#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \ +DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL); + +/* + * MACROs for defining sysfs attribute for 32-bit registers + */ +#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \ +static ssize_t _otg_attr_name_##_show (struct device *_dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\ + uint32_t val; \ + val = dwc_read_reg32 (_addr_); \ + return sprintf (buf, "%s = 0x%08x\n", _string_, val); \ +} +#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \ +static ssize_t _otg_attr_name_##_store (struct device *_dev, \ + struct device_attribute *attr, const char *buf, size_t count) \ +{ \ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\ + uint32_t val = simple_strtoul(buf, NULL, 16); \ + dev_dbg(_dev, "Storing Address=0x%08x Val=0x%08x\n", (uint32_t)_addr_, val); \ + dwc_write_reg32(_addr_, val); \ + return count; \ +} + +#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \ +DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \ +DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \ +DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store); + +#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \ +DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \ +DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL); + + +/** @name Functions for Show/Store of Attributes */ +/**@{*/ + +/** + * Show the register offset of the Register Access. + */ +static ssize_t regoffset_show( struct device *_dev, + struct device_attribute *attr, char *buf) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + return snprintf(buf, sizeof("0xFFFFFFFF\n")+1,"0x%08x\n", otg_dev->reg_offset); +} + +/** + * Set the register offset for the next Register Access Read/Write + */ +static ssize_t regoffset_store( struct device *_dev, struct device_attribute *attr, const char *buf, + size_t count ) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + uint32_t offset = simple_strtoul(buf, NULL, 16); + //dev_dbg(_dev, "Offset=0x%08x\n", offset); + if (offset < SZ_256K ) { + otg_dev->reg_offset = offset; + } + else { + dev_err( _dev, "invalid offset\n" ); + } + + return count; +} +DEVICE_ATTR(regoffset, S_IRUGO|S_IWUSR, regoffset_show, regoffset_store); + +/** + * Show the value of the register at the offset in the reg_offset + * attribute. + */ +static ssize_t regvalue_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + uint32_t val; + volatile uint32_t *addr; + + if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) { + /* Calculate the address */ + addr = (uint32_t*)(otg_dev->reg_offset + + (uint8_t*)otg_dev->base); + //dev_dbg(_dev, "@0x%08x\n", (unsigned)addr); + val = dwc_read_reg32( addr ); + return snprintf(buf, sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n")+1, + "Reg@0x%06x = 0x%08x\n", + otg_dev->reg_offset, val); + } else { + dev_err(_dev, "Invalid offset (0x%0x)\n", + otg_dev->reg_offset); + return sprintf(buf, "invalid offset\n" ); + } +} + +/** + * Store the value in the register at the offset in the reg_offset + * attribute. + * + */ +static ssize_t regvalue_store( struct device *_dev, struct device_attribute *attr, const char *buf, + size_t count ) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + volatile uint32_t * addr; + uint32_t val = simple_strtoul(buf, NULL, 16); + //dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val); + if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) { + /* Calculate the address */ + addr = (uint32_t*)(otg_dev->reg_offset + + (uint8_t*)otg_dev->base); + //dev_dbg(_dev, "@0x%08x\n", (unsigned)addr); + dwc_write_reg32( addr, val ); + } else { + dev_err(_dev, "Invalid Register Offset (0x%08x)\n", + otg_dev->reg_offset); + } + return count; +} +DEVICE_ATTR(regvalue, S_IRUGO|S_IWUSR, regvalue_show, regvalue_store); + +/* + * Attributes + */ +DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<20),20,"Mode"); +DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<9),9,"Mode"); +DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<8),8,"Mode"); + +//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode"); +//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode"); +DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected,otg_dev->core_if->host_if->hprt0,0x01,0,"Bus Connected"); + +DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl,&(otg_dev->core_if->core_global_regs->gotgctl),"GOTGCTL"); +DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,&(otg_dev->core_if->core_global_regs->gusbcfg),"GUSBCFG"); +DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,&(otg_dev->core_if->core_global_regs->grxfsiz),"GRXFSIZ"); +DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,&(otg_dev->core_if->core_global_regs->gnptxfsiz),"GNPTXFSIZ"); +DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,&(otg_dev->core_if->core_global_regs->gpvndctl),"GPVNDCTL"); +DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,&(otg_dev->core_if->core_global_regs->ggpio),"GGPIO"); +DWC_OTG_DEVICE_ATTR_REG32_RW(guid,&(otg_dev->core_if->core_global_regs->guid),"GUID"); +DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,&(otg_dev->core_if->core_global_regs->gsnpsid),"GSNPSID"); +DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dcfg),0x3,0,"Device Speed"); +DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dsts),0x6,1,"Device Enumeration Speed"); + +DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,&(otg_dev->core_if->core_global_regs->hptxfsiz),"HPTXFSIZ"); +DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0,otg_dev->core_if->host_if->hprt0,"HPRT0"); + + +/** + * @todo Add code to initiate the HNP. + */ +/** + * Show the HNP status bit + */ +static ssize_t hnp_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + gotgctl_data_t val; + val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl)); + return sprintf (buf, "HstNegScs = 0x%x\n", val.b.hstnegscs); +} + +/** + * Set the HNP Request bit + */ +static ssize_t hnp_store( struct device *_dev, struct device_attribute *attr, const char *buf, + size_t count ) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + uint32_t in = simple_strtoul(buf, NULL, 16); + uint32_t *addr = (uint32_t *)&(otg_dev->core_if->core_global_regs->gotgctl); + gotgctl_data_t mem; + mem.d32 = dwc_read_reg32(addr); + mem.b.hnpreq = in; + dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32); + dwc_write_reg32(addr, mem.d32); + return count; +} +DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store); + +/** + * @todo Add code to initiate the SRP. + */ +/** + * Show the SRP status bit + */ +static ssize_t srp_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ +#ifndef CONFIG_DWC_HOST_ONLY + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + gotgctl_data_t val; + val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl)); + return sprintf (buf, "SesReqScs = 0x%x\n", val.b.sesreqscs); +#else + return sprintf(buf, "Host Only Mode!\n"); +#endif +} + +/** + * Set the SRP Request bit + */ +static ssize_t srp_store( struct device *_dev, struct device_attribute *attr, const char *buf, + size_t count ) +{ +#ifndef CONFIG_DWC_HOST_ONLY + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + dwc_otg_pcd_initiate_srp(otg_dev->pcd); +#endif + return count; +} +DEVICE_ATTR(srp, 0644, srp_show, srp_store); + +/** + * @todo Need to do more for power on/off? + */ +/** + * Show the Bus Power status + */ +static ssize_t buspower_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + hprt0_data_t val; + val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0); + return sprintf (buf, "Bus Power = 0x%x\n", val.b.prtpwr); +} + + +/** + * Set the Bus Power status + */ +static ssize_t buspower_store( struct device *_dev, struct device_attribute *attr, const char *buf, + size_t count ) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + uint32_t on = simple_strtoul(buf, NULL, 16); + uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0; + hprt0_data_t mem; + + mem.d32 = dwc_read_reg32(addr); + mem.b.prtpwr = on; + + //dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32); + dwc_write_reg32(addr, mem.d32); + + return count; +} +DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store); + +/** + * @todo Need to do more for suspend? + */ +/** + * Show the Bus Suspend status + */ +static ssize_t bussuspend_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + hprt0_data_t val; + val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0); + return sprintf (buf, "Bus Suspend = 0x%x\n", val.b.prtsusp); +} + +/** + * Set the Bus Suspend status + */ +static ssize_t bussuspend_store( struct device *_dev, struct device_attribute *attr, const char *buf, + size_t count ) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + uint32_t in = simple_strtoul(buf, NULL, 16); + uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0; + hprt0_data_t mem; + mem.d32 = dwc_read_reg32(addr); + mem.b.prtsusp = in; + dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32); + dwc_write_reg32(addr, mem.d32); + return count; +} +DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store); + +/** + * Show the status of Remote Wakeup. + */ +static ssize_t remote_wakeup_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ +#ifndef CONFIG_DWC_HOST_ONLY + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + dctl_data_t val; + val.d32 = dwc_read_reg32( &otg_dev->core_if->dev_if->dev_global_regs->dctl); + return sprintf( buf, "Remote Wakeup = %d Enabled = %d\n", + val.b.rmtwkupsig, otg_dev->pcd->remote_wakeup_enable); +#else + return sprintf(buf, "Host Only Mode!\n"); +#endif +} + +/** + * Initiate a remote wakeup of the host. The Device control register + * Remote Wakeup Signal bit is written if the PCD Remote wakeup enable + * flag is set. + * + */ +static ssize_t remote_wakeup_store( struct device *_dev, struct device_attribute *attr, + const char *buf, size_t count ) +{ +#ifndef CONFIG_DWC_HOST_ONLY + uint32_t val = simple_strtoul(buf, NULL, 16); + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + if (val&1) { + dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1); + } + else { + dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0); + } +#endif + return count; +} +DEVICE_ATTR(remote_wakeup, S_IRUGO|S_IWUSR, remote_wakeup_show, + remote_wakeup_store); + +/** + * Dump global registers and either host or device registers (depending on the + * current mode of the core). + */ +static ssize_t regdump_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + printk("%s otg_dev=0x%p\n", __FUNCTION__, otg_dev); + dwc_otg_dump_global_registers( otg_dev->core_if); + if (dwc_otg_is_host_mode(otg_dev->core_if)) { + dwc_otg_dump_host_registers( otg_dev->core_if); + } else { + dwc_otg_dump_dev_registers( otg_dev->core_if); + } + return sprintf( buf, "Register Dump\n" ); +} +DEVICE_ATTR(regdump, S_IRUGO|S_IWUSR, regdump_show, 0); + +/** + * Dump the current hcd state. + */ +static ssize_t hcddump_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ +#ifndef CONFIG_DWC_DEVICE_ONLY + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + dwc_otg_hcd_dump_state(otg_dev->hcd); +#endif + return sprintf( buf, "HCD Dump\n" ); +} +DEVICE_ATTR(hcddump, S_IRUGO|S_IWUSR, hcddump_show, 0); + +/** + * Dump the average frame remaining at SOF. This can be used to + * determine average interrupt latency. Frame remaining is also shown for + * start transfer and two additional sample points. + */ +static ssize_t hcd_frrem_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ +#ifndef CONFIG_DWC_DEVICE_ONLY + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + dwc_otg_hcd_dump_frrem(otg_dev->hcd); +#endif + return sprintf( buf, "HCD Dump Frame Remaining\n" ); +} + +DEVICE_ATTR(hcd_frrem, S_IRUGO|S_IWUSR, hcd_frrem_show, 0); + +/** + * Displays the time required to read the GNPTXFSIZ register many times (the + * output shows the number of times the register is read). + */ +#define RW_REG_COUNT 10000000 +#define MSEC_PER_JIFFIE 1000/HZ +static ssize_t rd_reg_test_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + int i; + int time; + int start_jiffies; + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + + printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n", + HZ, MSEC_PER_JIFFIE, loops_per_jiffy); + start_jiffies = jiffies; + for (i = 0; i < RW_REG_COUNT; i++) { + dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz); + } + time = jiffies - start_jiffies; + return sprintf( buf, "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n", + RW_REG_COUNT, time * MSEC_PER_JIFFIE, time ); +} + +DEVICE_ATTR(rd_reg_test, S_IRUGO|S_IWUSR, rd_reg_test_show, 0); + +/** + * Displays the time required to write the GNPTXFSIZ register many times (the + * output shows the number of times the register is written). + */ +static ssize_t wr_reg_test_show( struct device *_dev, struct device_attribute *attr, char *buf) +{ + int i; + int time; + int start_jiffies; + dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); + uint32_t reg_val; + + printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n", + HZ, MSEC_PER_JIFFIE, loops_per_jiffy); + reg_val = dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz); + start_jiffies = jiffies; + for (i = 0; i < RW_REG_COUNT; i++) { + dwc_write_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz, reg_val); + } + time = jiffies - start_jiffies; + return sprintf( buf, "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n", + RW_REG_COUNT, time * MSEC_PER_JIFFIE, time); +} +DEVICE_ATTR(wr_reg_test, S_IRUGO|S_IWUSR, wr_reg_test_show, 0); + +/** + * Create the device files + */ +void dwc_otg_attr_create (struct device *dev) +{ + int ret_val = 0; + ret_val = device_create_file(dev, &dev_attr_regoffset); + ret_val = device_create_file(dev, &dev_attr_regvalue); + ret_val = device_create_file(dev, &dev_attr_mode); + ret_val = device_create_file(dev, &dev_attr_hnpcapable); + ret_val = device_create_file(dev, &dev_attr_srpcapable); + ret_val = device_create_file(dev, &dev_attr_hnp); + ret_val = device_create_file(dev, &dev_attr_srp); + ret_val = device_create_file(dev, &dev_attr_buspower); + ret_val = device_create_file(dev, &dev_attr_bussuspend); + ret_val = device_create_file(dev, &dev_attr_busconnected); + ret_val = device_create_file(dev, &dev_attr_gotgctl); + ret_val = device_create_file(dev, &dev_attr_gusbcfg); + ret_val = device_create_file(dev, &dev_attr_grxfsiz); + ret_val = device_create_file(dev, &dev_attr_gnptxfsiz); + ret_val = device_create_file(dev, &dev_attr_gpvndctl); + ret_val = device_create_file(dev, &dev_attr_ggpio); + ret_val = device_create_file(dev, &dev_attr_guid); + ret_val = device_create_file(dev, &dev_attr_gsnpsid); + ret_val = device_create_file(dev, &dev_attr_devspeed); + ret_val = device_create_file(dev, &dev_attr_enumspeed); + ret_val = device_create_file(dev, &dev_attr_hptxfsiz); + ret_val = device_create_file(dev, &dev_attr_hprt0); + ret_val = device_create_file(dev, &dev_attr_remote_wakeup); + ret_val = device_create_file(dev, &dev_attr_regdump); + ret_val = device_create_file(dev, &dev_attr_hcddump); + ret_val = device_create_file(dev, &dev_attr_hcd_frrem); + ret_val = device_create_file(dev, &dev_attr_rd_reg_test); + ret_val = device_create_file(dev, &dev_attr_wr_reg_test); +} + +/** + * Remove the device files + */ +void dwc_otg_attr_remove (struct device *dev) +{ + device_remove_file(dev, &dev_attr_regoffset); + device_remove_file(dev, &dev_attr_regvalue); + device_remove_file(dev, &dev_attr_mode); + device_remove_file(dev, &dev_attr_hnpcapable); + device_remove_file(dev, &dev_attr_srpcapable); + device_remove_file(dev, &dev_attr_hnp); + device_remove_file(dev, &dev_attr_srp); + device_remove_file(dev, &dev_attr_buspower); + device_remove_file(dev, &dev_attr_bussuspend); + device_remove_file(dev, &dev_attr_busconnected); + device_remove_file(dev, &dev_attr_gotgctl); + device_remove_file(dev, &dev_attr_gusbcfg); + device_remove_file(dev, &dev_attr_grxfsiz); + device_remove_file(dev, &dev_attr_gnptxfsiz); + device_remove_file(dev, &dev_attr_gpvndctl); + device_remove_file(dev, &dev_attr_ggpio); + device_remove_file(dev, &dev_attr_guid); + device_remove_file(dev, &dev_attr_gsnpsid); + device_remove_file(dev, &dev_attr_devspeed); + device_remove_file(dev, &dev_attr_enumspeed); + device_remove_file(dev, &dev_attr_hptxfsiz); + device_remove_file(dev, &dev_attr_hprt0); + device_remove_file(dev, &dev_attr_remote_wakeup); + device_remove_file(dev, &dev_attr_regdump); + device_remove_file(dev, &dev_attr_hcddump); + device_remove_file(dev, &dev_attr_hcd_frrem); + device_remove_file(dev, &dev_attr_rd_reg_test); + device_remove_file(dev, &dev_attr_wr_reg_test); +} + diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_attr.h b/drivers/usb/gadget/dwc_otg/dwc_otg_attr.h new file mode 100644 index 00000000000..d04a7d06189 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_attr.h @@ -0,0 +1,67 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_attr.h $ + * $Revision: #1 $ + * $Date: 2005/07/07 $ + * $Change: 510275 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#if !defined(__DWC_OTG_ATTR_H__) +#define __DWC_OTG_ATTR_H__ + +/** @file + * This file contains the interface to the Linux device attributes. + */ +extern struct device_attribute dev_attr_regoffset; +extern struct device_attribute dev_attr_regvalue; + +extern struct device_attribute dev_attr_mode; +extern struct device_attribute dev_attr_hnpcapable; +extern struct device_attribute dev_attr_srpcapable; +extern struct device_attribute dev_attr_hnp; +extern struct device_attribute dev_attr_srp; +extern struct device_attribute dev_attr_buspower; +extern struct device_attribute dev_attr_bussuspend; +extern struct device_attribute dev_attr_busconnected; +extern struct device_attribute dev_attr_gotgctl; +extern struct device_attribute dev_attr_gusbcfg; +extern struct device_attribute dev_attr_grxfsiz; +extern struct device_attribute dev_attr_gnptxfsiz; +extern struct device_attribute dev_attr_gpvndctl; +extern struct device_attribute dev_attr_ggpio; +extern struct device_attribute dev_attr_guid; +extern struct device_attribute dev_attr_gsnpsid; +extern struct device_attribute dev_attr_devspeed; +extern struct device_attribute dev_attr_enumspeed; +extern struct device_attribute dev_attr_hptxfsiz; +extern struct device_attribute dev_attr_hprt0; + +void dwc_otg_attr_create (struct device *dev); +void dwc_otg_attr_remove (struct device *dev); + +#endif diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_cil.c b/drivers/usb/gadget/dwc_otg/dwc_otg_cil.c new file mode 100644 index 00000000000..61a8879fc10 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_cil.c @@ -0,0 +1,3237 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil.c $ + * $Revision: #24 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + + +/** @file + * + * The Core Interface Layer provides basic services for accessing and + * managing the DWC_otg hardware. These services are used by both the + * Host Controller Driver and the Peripheral Controller Driver. + * + * The CIL manages the memory map for the core so that the HCD and PCD + * don't have to do this separately. It also handles basic tasks like + * reading/writing the registers and data FIFOs in the controller. + * Some of the data access functions provide encapsulation of several + * operations required to perform a task, such as writing multiple + * registers to start a transfer. Finally, the CIL performs basic + * services that are not specific to either the host or device modes + * of operation. These services include management of the OTG Host + * Negotiation Protocol (HNP) and Session Request Protocol (SRP). A + * Diagnostic API is also provided to allow testing of the controller + * hardware. + * + * The Core Interface Layer has the following requirements: + * - Provides basic controller operations. + * - Minimal use of OS services. + * - The OS services used will be abstracted by using inline functions + * or macros. + * + */ +#include <asm/unaligned.h> +#ifdef CONFIG_DWC_DEBUG +#include <linux/jiffies.h> +#endif /* */ + +#include <asm/dcr.h> + +#include "linux/dwc_otg_plat.h" +#include "dwc_otg_regs.h" +#include "dwc_otg_cil.h" + +#ifdef CONFIG_OTG_PLB_DMA_TASKLET +atomic_t release_later = ATOMIC_INIT(0); +#endif +/** + * This function is called to initialize the DWC_otg CSR data + * structures. The register addresses in the device and host + * structures are initialized from the base address supplied by the + * caller. The calling function must make the OS calls to get the + * base address of the DWC_otg controller registers. The core_params + * argument holds the parameters that specify how the core should be + * configured. + * + * @param[in] _reg_base_addr Base address of DWC_otg core registers + * @param[in] _core_params Pointer to the core configuration parameters + * + */ +dwc_otg_core_if_t * dwc_otg_cil_init(const uint32_t * _reg_base_addr, + dwc_otg_core_params_t *_core_params) +{ + dwc_otg_core_if_t * core_if = 0; + dwc_otg_dev_if_t * dev_if = 0; + dwc_otg_host_if_t * host_if = 0; + uint8_t * reg_base = (uint8_t *) _reg_base_addr; + int i = 0; + DWC_DEBUGPL(DBG_CILV, "%s(%p,%p)\n", __func__, _reg_base_addr, + _core_params); + core_if = kmalloc(sizeof(dwc_otg_core_if_t), GFP_KERNEL); + if (core_if == 0) { + DWC_DEBUGPL(DBG_CIL,"Allocation of dwc_otg_core_if_t failed\n"); + return 0; + } + memset(core_if, 0, sizeof(dwc_otg_core_if_t)); + core_if->core_params = _core_params; + core_if->core_global_regs = (dwc_otg_core_global_regs_t *) reg_base; + + /* + * Allocate the Device Mode structures. + */ + dev_if = kmalloc(sizeof(dwc_otg_dev_if_t), GFP_KERNEL); + if (dev_if == 0) { + DWC_DEBUGPL(DBG_CIL,"Allocation of dwc_otg_dev_if_t failed\n"); + kfree(core_if); + return 0; + } + dev_if->dev_global_regs = (dwc_otg_device_global_regs_t *)(reg_base + + DWC_DEV_GLOBAL_REG_OFFSET); + for (i = 0; i < MAX_EPS_CHANNELS; i++) { + dev_if->in_ep_regs[i] = (dwc_otg_dev_in_ep_regs_t *) + (reg_base + DWC_DEV_IN_EP_REG_OFFSET + (i * DWC_EP_REG_OFFSET)); + dev_if->out_ep_regs[i] = (dwc_otg_dev_out_ep_regs_t *) + (reg_base + DWC_DEV_OUT_EP_REG_OFFSET + (i * DWC_EP_REG_OFFSET)); + DWC_DEBUGPL(DBG_CILV, "in_ep_regs[%d]->diepctl=%p\n", i, + &dev_if->in_ep_regs[i]->diepctl); + DWC_DEBUGPL(DBG_CILV, "out_ep_regs[%d]->doepctl=%p\n", i, + &dev_if->out_ep_regs[i]->doepctl); + } + dev_if->speed = 0; // unknown + core_if->dev_if = dev_if; + + /* + * Allocate the Host Mode structures. + */ + host_if = kmalloc(sizeof(dwc_otg_host_if_t), GFP_KERNEL); + if (host_if == 0) { + DWC_DEBUGPL(DBG_CIL,"Allocation of dwc_otg_host_if_t failed\n"); + kfree(dev_if); + kfree(core_if); + return 0; + } + host_if->host_global_regs = (dwc_otg_host_global_regs_t *) + (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET); + host_if->hprt0 = (uint32_t *) (reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET); + + for (i = 0; i < MAX_EPS_CHANNELS; i++) { + host_if->hc_regs[i] = (dwc_otg_hc_regs_t *) + (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET + (i * DWC_OTG_CHAN_REGS_OFFSET)); + DWC_DEBUGPL(DBG_CILV, "hc_reg[%d]->hcchar=%p\n", i,&host_if->hc_regs[i]->hcchar); + } + + host_if->num_host_channels = MAX_EPS_CHANNELS; + core_if->host_if = host_if; + for (i = 0; i < MAX_EPS_CHANNELS; i++) { + core_if->data_fifo[i] = + (uint32_t *) (reg_base + DWC_OTG_DATA_FIFO_OFFSET + + (i * DWC_OTG_DATA_FIFO_SIZE)); + DWC_DEBUGPL(DBG_CILV, "data_fifo[%d]=0x%08x\n", i, + (unsigned)core_if->data_fifo[i]); + } + core_if->pcgcctl = (uint32_t *) (reg_base + DWC_OTG_PCGCCTL_OFFSET); + + /* + * Store the contents of the hardware configuration registers here for + * easy access later. + */ + core_if->hwcfg1.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg1); + core_if->hwcfg2.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg2); +#ifdef CONFIG_DWC_SLAVE + core_if->hwcfg2.b.architecture = DWC_SLAVE_ONLY_ARCH; +#endif + core_if->hwcfg3.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg3); + core_if->hwcfg4.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg4); + DWC_DEBUGPL(DBG_CILV, "hwcfg1=%08x\n", core_if->hwcfg1.d32); + DWC_DEBUGPL(DBG_CILV, "hwcfg2=%08x\n", core_if->hwcfg2.d32); + DWC_DEBUGPL(DBG_CILV, "hwcfg3=%08x\n", core_if->hwcfg3.d32); + DWC_DEBUGPL(DBG_CILV, "hwcfg4=%08x\n", core_if->hwcfg4.d32); + DWC_DEBUGPL(DBG_CILV, "op_mode=%0x\n", core_if->hwcfg2.b.op_mode); + DWC_DEBUGPL(DBG_CILV, "arch=%0x\n", core_if->hwcfg2.b.architecture); + DWC_DEBUGPL(DBG_CILV, "num_dev_ep=%d\n",core_if->hwcfg2.b.num_dev_ep + 1); + DWC_DEBUGPL(DBG_CILV, "num_host_chan=%d\n",core_if->hwcfg2.b.num_host_chan); + DWC_DEBUGPL(DBG_CILV, "nonperio_tx_q_depth=0x%0x\n", + core_if->hwcfg2.b.nonperio_tx_q_depth); + DWC_DEBUGPL(DBG_CILV, "host_perio_tx_q_depth=0x%0x\n", + core_if->hwcfg2.b.host_perio_tx_q_depth); + DWC_DEBUGPL(DBG_CILV, "dev_token_q_depth=0x%0x\n", + core_if->hwcfg2.b.dev_token_q_depth); + DWC_DEBUGPL(DBG_CILV, "Total FIFO SZ=%d\n", + core_if->hwcfg3.b.dfifo_depth); + DWC_DEBUGPL(DBG_CILV, "xfer_size_cntr_width=%0x\n", + core_if->hwcfg3.b.xfer_size_cntr_width); + + /* + * Set the SRP sucess bit for FS-I2c + */ + core_if->srp_success = 0; + core_if->srp_timer_started = 0; + return core_if; +} + + +/** + * This function frees the structures allocated by dwc_otg_cil_init(). + * + * @param[in] _core_if The core interface pointer returned from + * dwc_otg_cil_init(). + * + */ +void dwc_otg_cil_remove(dwc_otg_core_if_t * _core_if) +{ + /* Disable all interrupts */ + dwc_modify_reg32(&_core_if->core_global_regs->gahbcfg, 1, 0); + dwc_write_reg32(&_core_if->core_global_regs->gintmsk, 0); + if (_core_if->dev_if) { + kfree(_core_if->dev_if); + } + if (_core_if->host_if) { + kfree(_core_if->host_if); + } + kfree(_core_if); +} + + +/** + * This function enables the controller's Global Interrupt in the AHB Config + * register. + * + * @param[in] _core_if Programming view of DWC_otg controller. + */ +extern void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * _core_if) +{ + gahbcfg_data_t ahbcfg = {.d32 = 0}; + ahbcfg.b.glblintrmsk = 1; /* Enable interrupts */ + dwc_modify_reg32(&_core_if->core_global_regs->gahbcfg, 0, ahbcfg.d32); +} + +/** + * This function disables the controller's Global Interrupt in the AHB Config + * register. + * + * @param[in] _core_if Programming view of DWC_otg controller. + */ +extern void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * _core_if) +{ + gahbcfg_data_t ahbcfg = {.d32 = 0}; + ahbcfg.b.glblintrmsk = 1; /* Enable interrupts */ + dwc_modify_reg32(&_core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0); +} + +/** + * This function initializes the commmon interrupts, used in both + * device and host modes. + * + * @param[in] _core_if Programming view of the DWC_otg controller + * + */ +static void dwc_otg_enable_common_interrupts(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + gintmsk_data_t intr_mask = {.d32 = 0}; + + /* Clear any pending OTG Interrupts */ + dwc_write_reg32(&global_regs->gotgint, 0xFFFFFFFF); + + /* Clear any pending interrupts */ + dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF); + + /* + * Enable the interrupts in the GINTMSK. + */ + intr_mask.b.modemismatch = 1; + intr_mask.b.otgintr = 1; + if (!_core_if->dma_enable) { + intr_mask.b.rxstsqlvl = 1; + } + intr_mask.b.conidstschng = 1; + intr_mask.b.wkupintr = 1; + intr_mask.b.disconnect = 1; + intr_mask.b.usbsuspend = 1; + intr_mask.b.sessreqintr = 1; + dwc_write_reg32(&global_regs->gintmsk, intr_mask.d32); +} + + +/** + * Initializes the FSLSPClkSel field of the HCFG register depending on the PHY + * type. + */ +static void init_fslspclksel(dwc_otg_core_if_t * _core_if) +{ + uint32_t val; + hcfg_data_t hcfg; + if (((_core_if->hwcfg2.b.hs_phy_type == 2) && + (_core_if->hwcfg2.b.fs_phy_type == 1) && + (_core_if->core_params->ulpi_fs_ls)) || + (_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) { + /* Full speed PHY */ + val = DWC_HCFG_48_MHZ; + } else { + /* High speed PHY running at full speed or high speed */ + val = DWC_HCFG_30_60_MHZ; + } + DWC_DEBUGPL(DBG_CIL, "Initializing HCFG.FSLSPClkSel to 0x%1x\n", val); + hcfg.d32 = dwc_read_reg32(&_core_if->host_if->host_global_regs->hcfg); + hcfg.b.fslspclksel = val; + dwc_write_reg32(&_core_if->host_if->host_global_regs->hcfg, hcfg.d32); +} + + +/** + * Initializes the DevSpd field of the DCFG register depending on the PHY type + * and the enumeration speed of the device. + */ +static void init_devspd(dwc_otg_core_if_t * _core_if) +{ + uint32_t val; + dcfg_data_t dcfg; + if (((_core_if->hwcfg2.b.hs_phy_type == 2) && + (_core_if->hwcfg2.b.fs_phy_type == 1) && + (_core_if->core_params->ulpi_fs_ls)) || + (_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) { + /* Full speed PHY */ + val = 0x3; + } else if (_core_if->core_params->speed == DWC_SPEED_PARAM_FULL) { + /* High speed PHY running at full speed */ + val = 0x1; + } else { + /* High speed PHY running at high speed */ + val = 0x0; + } + DWC_DEBUGPL(DBG_CIL, "Initializing DCFG.DevSpd to 0x%1x\n", val); + dcfg.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dcfg); + dcfg.b.devspd = val; + dwc_write_reg32(&_core_if->dev_if->dev_global_regs->dcfg, dcfg.d32); +} + + +/** + * This function calculates the number of IN EPS + * using GHWCFG1 and GHWCFG2 registers values + * + * @param _pcd the pcd structure. + */ +static uint32_t calc_num_in_eps(dwc_otg_core_if_t * _core_if) +{ + uint32_t num_in_eps = 0; + uint32_t num_eps = _core_if->hwcfg2.b.num_dev_ep; + uint32_t hwcfg1 = _core_if->hwcfg1.d32 >> 2; + uint32_t num_tx_fifos = _core_if->hwcfg4.b.num_in_eps; + int i; + for (i = 0; i < num_eps; ++i) { + if (!(hwcfg1 & 0x1)) + num_in_eps++; + hwcfg1 >>= 2; + } + if (_core_if->hwcfg4.b.ded_fifo_en) { + num_in_eps = (num_in_eps > num_tx_fifos) ? num_tx_fifos : num_in_eps; + } + return num_in_eps; +} + + +/** + * This function calculates the number of OUT EPS + * using GHWCFG1 and GHWCFG2 registers values + * + * @param _pcd the pcd structure. + */ +static uint32_t calc_num_out_eps(dwc_otg_core_if_t * _core_if) +{ + uint32_t num_out_eps = 0; + uint32_t num_eps = _core_if->hwcfg2.b.num_dev_ep; + uint32_t hwcfg1 = _core_if->hwcfg1.d32 >> 2; + int i; + for (i = 0; i < num_eps; ++i) { + if (!(hwcfg1 & 0x2)) + num_out_eps++; + hwcfg1 >>= 2; + } + return num_out_eps; +} + + +/** + * This function initializes the DWC_otg controller registers and + * prepares the core for device mode or host mode operation. + * + * @param _core_if Programming view of the DWC_otg controller + * + */ +void dwc_otg_core_init(dwc_otg_core_if_t * _core_if) +{ + int i = 0; + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + dwc_otg_dev_if_t * dev_if = _core_if->dev_if; + gahbcfg_data_t ahbcfg = {.d32 = 0}; + gusbcfg_data_t usbcfg = {.d32 = 0}; + gi2cctl_data_t i2cctl = {.d32 = 0}; + DWC_DEBUGPL(DBG_CILV, "dwc_otg_core_init(%p)\n", _core_if); + + /* Common Initialization */ + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + DWC_DEBUGPL(DBG_CIL, "USB config register: 0x%08x\n", usbcfg.d32); + + /* Program the ULPI External VBUS bit if needed */ +#if defined(OTG_EXT_CHG_PUMP) || defined(CONFIG_460EX) || defined(CONFIG_APM82181) + usbcfg.b.ulpi_ext_vbus_drv = 1; +#else + //usbcfg.b.ulpi_ext_vbus_drv = 0; + usbcfg.b.ulpi_ext_vbus_drv = + (_core_if->core_params->phy_ulpi_ext_vbus == + DWC_PHY_ULPI_EXTERNAL_VBUS) ? 1 : 0; +#endif + + /* Set external TS Dline pulsing */ + usbcfg.b.term_sel_dl_pulse = (_core_if->core_params->ts_dline == 1) ? 1 : 0; + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + + /* Reset the Controller */ + dwc_otg_core_reset(_core_if); + + /* Initialize parameters from Hardware configuration registers. */ + dev_if->num_in_eps = calc_num_in_eps(_core_if); + dev_if->num_out_eps = calc_num_out_eps(_core_if); + DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n", + _core_if->hwcfg4.b.num_dev_perio_in_ep); + DWC_DEBUGPL(DBG_CIL, "Is power optimization enabled? %s\n", + _core_if->hwcfg4.b.power_optimiz ? "Yes" : "No"); + DWC_DEBUGPL(DBG_CIL, "vbus_valid filter enabled? %s\n", + _core_if->hwcfg4.b.vbus_valid_filt_en ? "Yes" : "No"); + DWC_DEBUGPL(DBG_CIL, "iddig filter enabled? %s\n", + _core_if->hwcfg4.b.iddig_filt_en ? "Yes" : "No"); + + for (i = 0; i < _core_if->hwcfg4.b.num_dev_perio_in_ep; i++) { + dev_if->perio_tx_fifo_size[i] = + dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]) >> 16; + DWC_DEBUGPL(DBG_CIL, "Periodic Tx FIFO SZ #%d=0x%0x\n", i, + dev_if->perio_tx_fifo_size[i]); + } + for (i = 0; i < _core_if->hwcfg4.b.num_in_eps; i++) { + dev_if->tx_fifo_size[i] = + dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]) >> 16; + DWC_DEBUGPL(DBG_CIL, "Tx FIFO SZ #%d=0x%0x\n", i, + dev_if->perio_tx_fifo_size[i]); + } + _core_if->total_fifo_size = _core_if->hwcfg3.b.dfifo_depth; + _core_if->rx_fifo_size = dwc_read_reg32(&global_regs->grxfsiz); + _core_if->nperio_tx_fifo_size = dwc_read_reg32(&global_regs->gnptxfsiz) >> 16; + DWC_DEBUGPL(DBG_CIL, "Total FIFO SZ=%d\n", _core_if->total_fifo_size); + DWC_DEBUGPL(DBG_CIL, "Rx FIFO SZ=%d\n", _core_if->rx_fifo_size); + DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO SZ=%d\n",_core_if->nperio_tx_fifo_size); + + /* This programming sequence needs to happen in FS mode before any other + * programming occurs */ + if ((_core_if->core_params->speed == DWC_SPEED_PARAM_FULL) && + (_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) { + + /* If FS mode with FS PHY */ + + /* core_init() is now called on every switch so only call the + * following for the first time through. + */ + if (!_core_if->phy_init_done) { + _core_if->phy_init_done = 1; + DWC_DEBUGPL(DBG_CIL, "FS_PHY detected\n"); + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + usbcfg.b.physel = 1; + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + + /* Reset after a PHY select */ + dwc_otg_core_reset(_core_if); + } + + /* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS. Also + * do this on HNP Dev/Host mode switches (done in dev_init and + * host_init). + */ + if (dwc_otg_is_host_mode(_core_if)) { + DWC_DEBUGPL(DBG_CIL, "host mode\n"); + init_fslspclksel(_core_if); + } else { + DWC_DEBUGPL(DBG_CIL, "device mode\n"); + init_devspd(_core_if); + } + + if (_core_if->core_params->i2c_enable) { + DWC_DEBUGPL(DBG_CIL, "FS_PHY Enabling I2c\n"); + + /* Program GUSBCFG.OtgUtmifsSel to I2C */ + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + usbcfg.b.otgutmifssel = 1; + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + + /* Program GI2CCTL.I2CEn */ + i2cctl.d32 = dwc_read_reg32(&global_regs->gi2cctl); + i2cctl.b.i2cdevaddr = 1; + i2cctl.b.i2cen = 0; + dwc_write_reg32(&global_regs->gi2cctl, i2cctl.d32); + i2cctl.b.i2cen = 1; + dwc_write_reg32(&global_regs->gi2cctl, i2cctl.d32); + } + } /* endif speed == DWC_SPEED_PARAM_FULL */ + else { + /* High speed PHY. */ + if (!_core_if->phy_init_done) { + _core_if->phy_init_done = 1; + DWC_DEBUGPL(DBG_CIL, "High spped PHY\n"); + /* HS PHY parameters. These parameters are preserved + * during soft reset so only program the first time. Do + * a soft reset immediately after setting phyif. + */ + // test-only: in AMCC 460EX code not used!!!??? + usbcfg.b.ulpi_utmi_sel = _core_if->core_params->phy_type; + if (usbcfg.b.ulpi_utmi_sel == 1) { + DWC_DEBUGPL(DBG_CIL, "ULPI\n"); + /* ULPI interface */ + usbcfg.b.phyif = 0; + usbcfg.b.ddrsel = _core_if->core_params->phy_ulpi_ddr; + } else { + /* UTMI+ interface */ + if (_core_if->core_params->phy_utmi_width == 16) { + usbcfg.b.phyif = 1; + DWC_DEBUGPL(DBG_CIL, "UTMI+ 16\n"); + } else { + DWC_DEBUGPL(DBG_CIL, "UTMI+ 8\n"); + usbcfg.b.phyif = 0; + } + } + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + /* Reset after setting the PHY parameters */ + dwc_otg_core_reset(_core_if); + } + } + if ((_core_if->hwcfg2.b.hs_phy_type == 2) && + (_core_if->hwcfg2.b.fs_phy_type == 1) && + (_core_if->core_params->ulpi_fs_ls)) { + DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS\n"); + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + usbcfg.b.ulpi_fsls = 1; + usbcfg.b.ulpi_clk_sus_m = 1; + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + } else { + DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS=0\n"); + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + usbcfg.b.ulpi_fsls = 0; + usbcfg.b.ulpi_clk_sus_m = 0; + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + } + + /* Program the GAHBCFG Register. */ + switch (_core_if->hwcfg2.b.architecture) { + case DWC_SLAVE_ONLY_ARCH: + DWC_DEBUGPL(DBG_CIL, "Slave Only Mode\n"); + ahbcfg.b.nptxfemplvl_txfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY; + ahbcfg.b.ptxfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY; + _core_if->dma_enable = 0; + break; + case DWC_EXT_DMA_ARCH: + DWC_DEBUGPL(DBG_CIL, "External DMA Mode\n"); + ahbcfg.b.hburstlen = _core_if->core_params->dma_burst_size; + _core_if->dma_enable = (_core_if->core_params->dma_enable != 0); + break; + case DWC_INT_DMA_ARCH: + DWC_DEBUGPL(DBG_CIL, "Internal DMA Mode\n"); + #if defined(CONFIG_APM82181) + /* Avoid system hang during concurrently using USB and SATA */ + ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR16; + #else + ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR; + #endif + _core_if->dma_enable = (_core_if->core_params->dma_enable != 0); + break; + } + ahbcfg.b.dmaenable = _core_if->dma_enable; + dwc_write_reg32(&global_regs->gahbcfg, ahbcfg.d32); + _core_if->en_multiple_tx_fifo = _core_if->hwcfg4.b.ded_fifo_en; + + /* + * Program the GUSBCFG register. + */ + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + switch (_core_if->hwcfg2.b.op_mode) { + case DWC_MODE_HNP_SRP_CAPABLE: + usbcfg.b.hnpcap = (_core_if->core_params->otg_cap == + DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE); + usbcfg.b.srpcap = (_core_if->core_params->otg_cap != + DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE); + break; + case DWC_MODE_SRP_ONLY_CAPABLE: + usbcfg.b.hnpcap = 0; + usbcfg.b.srpcap = (_core_if->core_params->otg_cap != + DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE); + break; + case DWC_MODE_NO_HNP_SRP_CAPABLE: + usbcfg.b.hnpcap = 0; + usbcfg.b.srpcap = 0; + break; + case DWC_MODE_SRP_CAPABLE_DEVICE: + usbcfg.b.hnpcap = 0; + usbcfg.b.srpcap = (_core_if->core_params->otg_cap != + DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE); + break; + case DWC_MODE_NO_SRP_CAPABLE_DEVICE: + usbcfg.b.hnpcap = 0; + usbcfg.b.srpcap = 0; + break; + case DWC_MODE_SRP_CAPABLE_HOST: + usbcfg.b.hnpcap = 0; + usbcfg.b.srpcap = (_core_if->core_params->otg_cap != + DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE); + break; + case DWC_MODE_NO_SRP_CAPABLE_HOST: + usbcfg.b.hnpcap = 0; + usbcfg.b.srpcap = 0; + break; + } + dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32); + + /* Enable common interrupts */ + dwc_otg_enable_common_interrupts(_core_if); + + /* Do device or host intialization based on mode during PCD + * and HCD initialization + */ + if (dwc_otg_is_host_mode(_core_if)) { + DWC_DEBUGPL(DBG_ANY, "Host Mode\n"); + _core_if->op_state = A_HOST; + } else { + DWC_DEBUGPL(DBG_ANY, "Device Mode\n"); + _core_if->op_state = B_PERIPHERAL; +#ifdef CONFIG_DWC_DEVICE_ONLY + dwc_otg_core_dev_init(_core_if); +#endif /* */ + } +} + + +/** + * This function enables the Device mode interrupts. + * + * @param _core_if Programming view of DWC_otg controller + */ +void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * _core_if) +{ + gintmsk_data_t intr_mask = {.d32 = 0}; + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__); + + /* Disable all interrupts. */ + dwc_write_reg32(&global_regs->gintmsk, 0); + + /* Clear any pending interrupts */ + dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF); + + /* Enable the common interrupts */ + dwc_otg_enable_common_interrupts(_core_if); + + /* Enable interrupts */ + intr_mask.b.usbreset = 1; + intr_mask.b.enumdone = 1; + intr_mask.b.inepintr = 1; + intr_mask.b.outepintr = 1; + intr_mask.b.erlysuspend = 1; + if (_core_if->en_multiple_tx_fifo == 0) { + intr_mask.b.epmismatch = 1; + } + + /** @todo NGS: Should this be a module parameter? */ +#ifdef USE_PERIODIC_EP + intr_mask.b.isooutdrop = 1; + intr_mask.b.eopframe = 1; + intr_mask.b.incomplisoin = 1; + intr_mask.b.incomplisoout = 1; +#endif /* */ + dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, + intr_mask.d32); + + DWC_DEBUGPL(DBG_CIL, "%s() gintmsk=%0x\n", __func__, + dwc_read_reg32(&global_regs->gintmsk)); +} + + +/** + * This function initializes the DWC_otg controller registers for + * device mode. + * + * @param _core_if Programming view of DWC_otg controller + * + */ +void dwc_otg_core_dev_init(dwc_otg_core_if_t * _core_if) +{ + int i; + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + dwc_otg_dev_if_t * dev_if = _core_if->dev_if; + dwc_otg_core_params_t * params = _core_if->core_params; + dcfg_data_t dcfg = {.d32 = 0}; + grstctl_t resetctl = {.d32 = 0}; + uint32_t rx_fifo_size; + fifosize_data_t nptxfifosize; + fifosize_data_t txfifosize; + dthrctl_data_t dthrctl; + fifosize_data_t ptxfifosize; + + /* Restart the Phy Clock */ + dwc_write_reg32(_core_if->pcgcctl, 0); + + /* Device configuration register */ + init_devspd(_core_if); + dcfg.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dcfg); + dcfg.b.perfrint = DWC_DCFG_FRAME_INTERVAL_80; + dwc_write_reg32(&dev_if->dev_global_regs->dcfg, dcfg.d32); + + /* Configure data FIFO sizes */ + if (_core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) { + DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n", + _core_if->total_fifo_size); + DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n", + params->dev_rx_fifo_size); + DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n", + params->dev_nperio_tx_fifo_size); + + /* Rx FIFO */ + DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n", + dwc_read_reg32(&global_regs->grxfsiz)); + rx_fifo_size = params->dev_rx_fifo_size; + dwc_write_reg32(&global_regs->grxfsiz, rx_fifo_size); + DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n", + dwc_read_reg32(&global_regs->grxfsiz)); + + /** Set Periodic Tx FIFO Mask all bits 0 */ + _core_if->p_tx_msk = 0; + + /** Set Tx FIFO Mask all bits 0 */ + _core_if->tx_msk = 0; + if (_core_if->en_multiple_tx_fifo == 0) { + /* Non-periodic Tx FIFO */ + DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n", + dwc_read_reg32(&global_regs->gnptxfsiz)); + nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size; + nptxfifosize.b.startaddr = params->dev_rx_fifo_size; + dwc_write_reg32(&global_regs->gnptxfsiz,nptxfifosize.d32); + DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n", + dwc_read_reg32(&global_regs->gnptxfsiz)); + + /**@todo NGS: Fix Periodic FIFO Sizing! */ + /* + * Periodic Tx FIFOs These FIFOs are numbered from 1 to 15. + * Indexes of the FIFO size module parameters in the + * dev_perio_tx_fifo_size array and the FIFO size registers in + * the dptxfsiz array run from 0 to 14. + */ + /** @todo Finish debug of this */ + ptxfifosize.b.startaddr = + nptxfifosize.b.startaddr + nptxfifosize.b.depth; + for (i = 0; i < _core_if->hwcfg4.b.num_dev_perio_in_ep;i++) { + ptxfifosize.b.depth = params->dev_perio_tx_fifo_size[i]; + DWC_DEBUGPL(DBG_CIL,"initial dptxfsiz_dieptxf[%d]=%08x\n", + i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i])); + dwc_write_reg32(&global_regs->dptxfsiz_dieptxf[i],ptxfifosize.d32); + DWC_DEBUGPL(DBG_CIL,"new dptxfsiz_dieptxf[%d]=%08x\n", + i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i])); + ptxfifosize.b.startaddr += ptxfifosize.b.depth; + } + } else { + + /* + * Tx FIFOs These FIFOs are numbered from 1 to 15. + * Indexes of the FIFO size module parameters in the + * dev_tx_fifo_size array and the FIFO size registers in + * the dptxfsiz_dieptxf array run from 0 to 14. + */ + + /* Non-periodic Tx FIFO */ + DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n", + dwc_read_reg32(&global_regs->gnptxfsiz)); + nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size; + nptxfifosize.b.startaddr = params->dev_rx_fifo_size; + dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32); + DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n", + dwc_read_reg32(&global_regs->gnptxfsiz)); + txfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth; + for (i = 1;i < _core_if->hwcfg4.b.num_dev_perio_in_ep;i++) { + txfifosize.b.depth = params->dev_tx_fifo_size[i]; + DWC_DEBUGPL(DBG_CIL,"initial dptxfsiz_dieptxf[%d]=%08x\n", + i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i])); + dwc_write_reg32(&global_regs->dptxfsiz_dieptxf[i - 1],txfifosize.d32); + DWC_DEBUGPL(DBG_CIL,"new dptxfsiz_dieptxf[%d]=%08x\n", + i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i-1])); + txfifosize.b.startaddr += txfifosize.b.depth; + } + } + } + + /* Flush the FIFOs */ + dwc_otg_flush_tx_fifo(_core_if, 0x10); /* all Tx FIFOs */ + dwc_otg_flush_rx_fifo(_core_if); + + /* Flush the Learning Queue. */ + resetctl.b.intknqflsh = 1; + dwc_write_reg32(&_core_if->core_global_regs->grstctl, resetctl.d32); + + /* Clear all pending Device Interrupts */ + dwc_write_reg32(&dev_if->dev_global_regs->diepmsk, 0); + dwc_write_reg32(&dev_if->dev_global_regs->doepmsk, 0); + dwc_write_reg32(&dev_if->dev_global_regs->daint, 0xFFFFFFFF); + dwc_write_reg32(&dev_if->dev_global_regs->daintmsk, 0); + for (i = 0; i <= dev_if->num_in_eps; i++) { + depctl_data_t depctl; + depctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->diepctl); + if (depctl.b.epena) { + depctl.d32 = 0; + depctl.b.epdis = 1; + depctl.b.snak = 1; + } else { + depctl.d32 = 0; + } + dwc_write_reg32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32); + dwc_write_reg32(&dev_if->in_ep_regs[i]->dieptsiz, 0); + dwc_write_reg32(&dev_if->in_ep_regs[i]->diepdma, 0); + dwc_write_reg32(&dev_if->in_ep_regs[i]->diepint, 0xFF); + } + for (i = 0; i <= dev_if->num_out_eps; i++) { + depctl_data_t depctl; + depctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[i]->doepctl); + if (depctl.b.epena) { + depctl.d32 = 0; + depctl.b.epdis = 1; + depctl.b.snak = 1; + } else { + depctl.d32 = 0; + } + dwc_write_reg32(&dev_if->out_ep_regs[i]->doepctl, depctl.d32); + dwc_write_reg32(&dev_if->out_ep_regs[i]->doeptsiz, 0); + dwc_write_reg32(&dev_if->out_ep_regs[i]->doepdma, 0); + dwc_write_reg32(&dev_if->out_ep_regs[i]->doepint, 0xFF); + } + if (_core_if->en_multiple_tx_fifo && _core_if->dma_enable) { + dev_if->non_iso_tx_thr_en = _core_if->core_params->thr_ctl & 0x1; + dev_if->iso_tx_thr_en = (_core_if->core_params->thr_ctl >> 1) & 0x1; + dev_if->rx_thr_en = (_core_if->core_params->thr_ctl >> 2) & 0x1; + dev_if->rx_thr_length = _core_if->core_params->rx_thr_length; + dev_if->tx_thr_length = _core_if->core_params->tx_thr_length; + dthrctl.d32 = 0; + dthrctl.b.non_iso_thr_en = dev_if->non_iso_tx_thr_en; + dthrctl.b.iso_thr_en = dev_if->iso_tx_thr_en; + dthrctl.b.tx_thr_len = dev_if->tx_thr_length; + dthrctl.b.rx_thr_en = dev_if->rx_thr_en; + dthrctl.b.rx_thr_len = dev_if->rx_thr_length; + dwc_write_reg32(&dev_if->dev_global_regs->dtknqr3_dthrctl,dthrctl.d32); + DWC_DEBUGPL(DBG_CIL, "Non ISO Tx Thr - %d\nISO Tx Thr - %d\n" + "Rx Thr - %d\nTx Thr Len - %d\nRx Thr Len - %d\n", + dthrctl.b.non_iso_thr_en, dthrctl.b.iso_thr_en, + dthrctl.b.rx_thr_en, dthrctl.b.tx_thr_len, + dthrctl.b.rx_thr_len); + } + dwc_otg_enable_device_interrupts(_core_if); + { + diepmsk_data_t msk = {.d32 = 0}; + msk.b.txfifoundrn = 1; + dwc_modify_reg32(&dev_if->dev_global_regs->diepmsk, msk.d32,msk.d32); + } +} + + +/** + * This function enables the Host mode interrupts. + * + * @param _core_if Programming view of DWC_otg controller + */ +void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + gintmsk_data_t intr_mask = {.d32 = 0}; + DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__); + + /* Disable all interrupts. */ + dwc_write_reg32(&global_regs->gintmsk, 0); + + /* Clear any pending interrupts. */ + dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF); + + /* Enable the common interrupts */ + dwc_otg_enable_common_interrupts(_core_if); + + /* + * Enable host mode interrupts without disturbing common + * interrupts. + */ + intr_mask.b.sofintr = 1; + intr_mask.b.portintr = 1; + intr_mask.b.hcintr = 1; + dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32); +} + +/** + * This function disables the Host Mode interrupts. + * + * @param _core_if Programming view of DWC_otg controller + */ +void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + gintmsk_data_t intr_mask = {.d32 = 0}; + DWC_DEBUGPL(DBG_CILV, "%s()\n", __func__); + + /* + * Disable host mode interrupts without disturbing common + * interrupts. + */ + intr_mask.b.sofintr = 1; + intr_mask.b.portintr = 1; + intr_mask.b.hcintr = 1; + intr_mask.b.ptxfempty = 1; + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0); +} + +#if 0 +/* currently not used, keep it here as if needed later */ +static int phy_read(dwc_otg_core_if_t * _core_if, int addr) +{ + u32 val; + int timeout = 10; + + dwc_write_reg32(&_core_if->core_global_regs->gpvndctl, + 0x02000000 | (addr << 16)); + val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl); + while (((val & 0x08000000) == 0) && (timeout--)) { + udelay(1000); + val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl); + } + val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl); + printk("%s: addr=%02x regval=%02x\n", __func__, addr, val & 0x000000ff); + + return 0; +} +#endif + +#ifdef CONFIG_405EX +static int phy_write(dwc_otg_core_if_t * _core_if, int addr, int val8) +{ + u32 val; + int timeout = 10; + + dwc_write_reg32(&_core_if->core_global_regs->gpvndctl, + 0x02000000 | 0x00400000 | (addr << 16) | (val8 & 0x000000ff)); + val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl); + while (((val & 0x08000000) == 0) && (timeout--)) { + udelay(1000); + val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl); + } + val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl); + + return 0; +} +#endif + +/** + * This function initializes the DWC_otg controller registers for + * host mode. + * + * This function flushes the Tx and Rx FIFOs and it flushes any entries in the + * request queues. Host channels are reset to ensure that they are ready for + * performing transfers. + * + * @param _core_if Programming view of DWC_otg controller + * + */ +void dwc_otg_core_host_init(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + dwc_otg_host_if_t * host_if = _core_if->host_if; + dwc_otg_core_params_t * params = _core_if->core_params; + hprt0_data_t hprt0 = {.d32 = 0}; + fifosize_data_t nptxfifosize; + fifosize_data_t ptxfifosize; + int i; + hcchar_data_t hcchar; + hcfg_data_t hcfg; + dwc_otg_hc_regs_t * hc_regs; + int num_channels; + gotgctl_data_t gotgctl = {.d32 = 0}; + DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, _core_if); + + /* Restart the Phy Clock */ + dwc_write_reg32(_core_if->pcgcctl, 0); + + /* Initialize Host Configuration Register */ + init_fslspclksel(_core_if); + if (_core_if->core_params->speed == DWC_SPEED_PARAM_FULL) { + hcfg.d32 = dwc_read_reg32(&host_if->host_global_regs->hcfg); + hcfg.b.fslssupp = 1; + dwc_write_reg32(&host_if->host_global_regs->hcfg, hcfg.d32); + } + + /* Configure data FIFO sizes */ + if (_core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) { + DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n", _core_if->total_fifo_size); + DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n", params->host_rx_fifo_size); + DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",params->host_nperio_tx_fifo_size); + DWC_DEBUGPL(DBG_CIL, "P Tx FIFO Size=%d\n", params->host_perio_tx_fifo_size); + + /* Rx FIFO */ + DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",dwc_read_reg32(&global_regs->grxfsiz)); + dwc_write_reg32(&global_regs->grxfsiz,params->host_rx_fifo_size); + DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",dwc_read_reg32(&global_regs->grxfsiz)); + + /* Non-periodic Tx FIFO */ + DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",dwc_read_reg32(&global_regs->gnptxfsiz)); + nptxfifosize.b.depth = params->host_nperio_tx_fifo_size; + nptxfifosize.b.startaddr = params->host_rx_fifo_size; + dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32); + DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n", dwc_read_reg32(&global_regs->gnptxfsiz)); + + /* Periodic Tx FIFO */ + DWC_DEBUGPL(DBG_CIL, "initial hptxfsiz=%08x\n",dwc_read_reg32(&global_regs->hptxfsiz)); + ptxfifosize.b.depth = params->host_perio_tx_fifo_size; + ptxfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth; + dwc_write_reg32(&global_regs->hptxfsiz, ptxfifosize.d32); + DWC_DEBUGPL(DBG_CIL, "new hptxfsiz=%08x\n", dwc_read_reg32(&global_regs->hptxfsiz)); + } + + /* Clear Host Set HNP Enable in the OTG Control Register */ + gotgctl.b.hstsethnpen = 1; + dwc_modify_reg32(&global_regs->gotgctl, gotgctl.d32, 0); + + /* Make sure the FIFOs are flushed. */ + dwc_otg_flush_tx_fifo(_core_if, 0x10 /* all Tx FIFOs */ ); + dwc_otg_flush_rx_fifo(_core_if); + + /* Flush out any leftover queued requests. */ + num_channels = _core_if->core_params->host_channels; + for (i = 0; i < num_channels; i++) { + hc_regs = _core_if->host_if->hc_regs[i]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.chen = 0; + hcchar.b.chdis = 1; + hcchar.b.epdir = 0; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + } + + /* Halt all channels to put them into a known state. */ + for (i = 0; i < num_channels; i++) { + int count = 0; + hc_regs = _core_if->host_if->hc_regs[i]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.chen = 1; + hcchar.b.chdis = 1; + hcchar.b.epdir = 0; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + DWC_DEBUGPL(DBG_HCDV, "%s: Halt channel %d\n", __func__, i); + + do { + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (++count > 200) { + DWC_ERROR + ("%s: Unable to clear halt on channel %d\n", + __func__, i); + break; + } + udelay(100); + } while (hcchar.b.chen); + } + + /* Turn on the vbus power. */ + DWC_PRINT("Init: Port Power? op_state=%d\n", _core_if->op_state); + if (_core_if->op_state == A_HOST) { + hprt0.d32 = dwc_otg_read_hprt0(_core_if); + DWC_PRINT("Init: Power Port (%d)\n", hprt0.b.prtpwr); + if (hprt0.b.prtpwr == 0) { + hprt0.b.prtpwr = 1; + dwc_write_reg32(host_if->hprt0, hprt0.d32); + } + } + +#ifdef CONFIG_405EX + /* Write 0x60 to USB PHY register 7: + * Modify "Indicator Complement" and "Indicator Pass Thru" of + * Interface control register to disable the internal Vbus + * comparator, as suggested by RichTek FAE. + * This produced better results recognizing and mounting USB + * memory sticks on the Makalu 405EX platform. I couldn't see + * any difference on Kilauea, but since it seems to be better + * on Makalu, let's keep it in here too. + */ + phy_write(_core_if, 7, 0x60); +#endif + + dwc_otg_enable_host_interrupts(_core_if); +} + + +/** + * Prepares a host channel for transferring packets to/from a specific + * endpoint. The HCCHARn register is set up with the characteristics specified + * in _hc. Host channel interrupts that may need to be serviced while this + * transfer is in progress are enabled. + * + * @param _core_if Programming view of DWC_otg controller + * @param _hc Information needed to initialize the host channel + */ +void dwc_otg_hc_init(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc) +{ + uint32_t intr_enable; + hcintmsk_data_t hc_intr_mask; + gintmsk_data_t gintmsk = {.d32 = 0}; + hcchar_data_t hcchar; + hcsplt_data_t hcsplt; + uint8_t hc_num = _hc->hc_num; + dwc_otg_host_if_t * host_if = _core_if->host_if; + dwc_otg_hc_regs_t * hc_regs = host_if->hc_regs[hc_num]; + + /* Clear old interrupt conditions for this host channel. */ + hc_intr_mask.d32 = 0xFFFFFFFF; + hc_intr_mask.b.reserved = 0; + dwc_write_reg32(&hc_regs->hcint, hc_intr_mask.d32); + + /* Enable channel interrupts required for this transfer. */ + hc_intr_mask.d32 = 0; + hc_intr_mask.b.chhltd = 1; + if (_core_if->dma_enable) { + hc_intr_mask.b.ahberr = 1; + if (_hc->error_state && !_hc->do_split && + _hc->ep_type != DWC_OTG_EP_TYPE_ISOC) { + hc_intr_mask.b.ack = 1; + if (_hc->ep_is_in) { + hc_intr_mask.b.datatglerr = 1; + if (_hc->ep_type != DWC_OTG_EP_TYPE_INTR) { + hc_intr_mask.b.nak = 1; + } + } + } + } else { + switch (_hc->ep_type) { + case DWC_OTG_EP_TYPE_CONTROL: + case DWC_OTG_EP_TYPE_BULK: + hc_intr_mask.b.xfercompl = 1; + hc_intr_mask.b.stall = 1; + hc_intr_mask.b.xacterr = 1; + hc_intr_mask.b.datatglerr = 1; + if (_hc->ep_is_in) { + hc_intr_mask.b.bblerr = 1; + } else { + hc_intr_mask.b.nak = 1; + hc_intr_mask.b.nyet = 1; + if (_hc->do_ping) { + hc_intr_mask.b.ack = 1; + } + } + if (_hc->do_split) { + hc_intr_mask.b.nak = 1; + if (_hc->complete_split) { + hc_intr_mask.b.nyet = 1; + } else { + hc_intr_mask.b.ack = 1; + } + } + if (_hc->error_state) { + hc_intr_mask.b.ack = 1; + } + break; + case DWC_OTG_EP_TYPE_INTR: + hc_intr_mask.b.xfercompl = 1; + hc_intr_mask.b.nak = 1; + hc_intr_mask.b.stall = 1; + hc_intr_mask.b.xacterr = 1; + hc_intr_mask.b.datatglerr = 1; + hc_intr_mask.b.frmovrun = 1; + if (_hc->ep_is_in) { + hc_intr_mask.b.bblerr = 1; + } + if (_hc->error_state) { + hc_intr_mask.b.ack = 1; + } + if (_hc->do_split) { + if (_hc->complete_split) { + hc_intr_mask.b.nyet = 1; + } else { + hc_intr_mask.b.ack = 1; + } + } + break; + case DWC_OTG_EP_TYPE_ISOC: + hc_intr_mask.b.xfercompl = 1; + hc_intr_mask.b.frmovrun = 1; + hc_intr_mask.b.ack = 1; + if (_hc->ep_is_in) { + hc_intr_mask.b.xacterr = 1; + hc_intr_mask.b.bblerr = 1; + } + break; + } + } + dwc_write_reg32(&hc_regs->hcintmsk, hc_intr_mask.d32); + + /* Enable the top level host channel interrupt. */ + intr_enable = (1 << hc_num); + dwc_modify_reg32(&host_if->host_global_regs->haintmsk, 0, intr_enable); + + /* Make sure host channel interrupts are enabled. */ + gintmsk.b.hcintr = 1; + dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, 0, gintmsk.d32); + + /* + * Program the HCCHARn register with the endpoint characteristics for + * the current transfer. + */ + hcchar.d32 = 0; + hcchar.b.devaddr = _hc->dev_addr; + hcchar.b.epnum = _hc->ep_num; + hcchar.b.epdir = _hc->ep_is_in; + hcchar.b.lspddev = (_hc->speed == DWC_OTG_EP_SPEED_LOW); + hcchar.b.eptype = _hc->ep_type; + hcchar.b.mps = _hc->max_packet; + dwc_write_reg32(&host_if->hc_regs[hc_num]->hcchar, hcchar.d32); + DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num); + DWC_DEBUGPL(DBG_HCDV, " Dev Addr: %d\n", hcchar.b.devaddr); + DWC_DEBUGPL(DBG_HCDV, " Ep Num: %d\n", hcchar.b.epnum); + DWC_DEBUGPL(DBG_HCDV, " Is In: %d\n", hcchar.b.epdir); + DWC_DEBUGPL(DBG_HCDV, " Is Low Speed: %d\n", hcchar.b.lspddev); + DWC_DEBUGPL(DBG_HCDV, " Ep Type: %d\n", hcchar.b.eptype); + DWC_DEBUGPL(DBG_HCDV, " Max Pkt: %d\n", hcchar.b.mps); + DWC_DEBUGPL(DBG_HCDV, " Multi Cnt: %d\n", hcchar.b.multicnt); + + /* + * Program the HCSPLIT register for SPLITs + */ + hcsplt.d32 = 0; + if (_hc->do_split) { + DWC_DEBUGPL(DBG_HCDV, "Programming HC %d with split --> %s\n", + _hc->hc_num,_hc->complete_split ? "CSPLIT" : "SSPLIT"); + hcsplt.b.compsplt = _hc->complete_split; + hcsplt.b.xactpos = _hc->xact_pos; + hcsplt.b.hubaddr = _hc->hub_addr; + hcsplt.b.prtaddr = _hc->port_addr; + DWC_DEBUGPL(DBG_HCDV, " comp split %d\n", _hc->complete_split); + DWC_DEBUGPL(DBG_HCDV, " xact pos %d\n", _hc->xact_pos); + DWC_DEBUGPL(DBG_HCDV, " hub addr %d\n", _hc->hub_addr); + DWC_DEBUGPL(DBG_HCDV, " port addr %d\n", _hc->port_addr); + DWC_DEBUGPL(DBG_HCDV, " is_in %d\n", _hc->ep_is_in); + DWC_DEBUGPL(DBG_HCDV, " Max Pkt: %d\n", hcchar.b.mps); + DWC_DEBUGPL(DBG_HCDV, " xferlen: %d\n", _hc->xfer_len); + } + dwc_write_reg32(&host_if->hc_regs[hc_num]->hcsplt, hcsplt.d32); +} + + +/** + * Attempts to halt a host channel. This function should only be called in + * Slave mode or to abort a transfer in either Slave mode or DMA mode. Under + * normal circumstances in DMA mode, the controller halts the channel when the + * transfer is complete or a condition occurs that requires application + * intervention. + * + * In slave mode, checks for a free request queue entry, then sets the Channel + * Enable and Channel Disable bits of the Host Channel Characteristics + * register of the specified channel to intiate the halt. If there is no free + * request queue entry, sets only the Channel Disable bit of the HCCHARn + * register to flush requests for this channel. In the latter case, sets a + * flag to indicate that the host channel needs to be halted when a request + * queue slot is open. + * + * In DMA mode, always sets the Channel Enable and Channel Disable bits of the + * HCCHARn register. The controller ensures there is space in the request + * queue before submitting the halt request. + * + * Some time may elapse before the core flushes any posted requests for this + * host channel and halts. The Channel Halted interrupt handler completes the + * deactivation of the host channel. + * + * @param _core_if Controller register interface. + * @param _hc Host channel to halt. + * @param _halt_status Reason for halting the channel. + */ +void dwc_otg_hc_halt(dwc_otg_core_if_t * _core_if, + dwc_hc_t * _hc, dwc_otg_halt_status_e _halt_status) +{ + gnptxsts_data_t nptxsts; + hptxsts_data_t hptxsts; + hcchar_data_t hcchar; + dwc_otg_hc_regs_t * hc_regs; + dwc_otg_core_global_regs_t * global_regs; + dwc_otg_host_global_regs_t * host_global_regs; + hc_regs = _core_if->host_if->hc_regs[_hc->hc_num]; + global_regs = _core_if->core_global_regs; + host_global_regs = _core_if->host_if->host_global_regs; + WARN_ON(_halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS); + if (_halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE || + _halt_status == DWC_OTG_HC_XFER_AHB_ERR) { + + /* + * Disable all channel interrupts except Ch Halted. The QTD + * and QH state associated with this transfer has been cleared + * (in the case of URB_DEQUEUE), so the channel needs to be + * shut down carefully to prevent crashes. + */ + hcintmsk_data_t hcintmsk; + hcintmsk.d32 = 0; + hcintmsk.b.chhltd = 1; + dwc_write_reg32(&hc_regs->hcintmsk, hcintmsk.d32); + + /* + * Make sure no other interrupts besides halt are currently + * pending. Handling another interrupt could cause a crash due + * to the QTD and QH state. + */ + dwc_write_reg32(&hc_regs->hcint, ~hcintmsk.d32); + + /* + * Make sure the halt status is set to URB_DEQUEUE or AHB_ERR + * even if the channel was already halted for some other + * reason. + */ + _hc->halt_status = _halt_status; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (hcchar.b.chen == 0) { + /* + * The channel is either already halted or it hasn't + * started yet. In DMA mode, the transfer may halt if + * it finishes normally or a condition occurs that + * requires driver intervention. Don't want to halt + * the channel again. In either Slave or DMA mode, + * it's possible that the transfer has been assigned + * to a channel, but not started yet when an URB is + * dequeued. Don't want to halt a channel that hasn't + * started yet. + */ + return; + } + } + if (_hc->halt_pending) { + + /* + * A halt has already been issued for this channel. This might + * happen when a transfer is aborted by a higher level in + * the stack. + */ +#ifdef CONFIG_DWC_DEBUG + DWC_PRINT("*** %s: Channel %d, _hc->halt_pending already set ***\n", + __func__, _hc->hc_num); +/* dwc_otg_dump_global_registers(_core_if); */ +/* dwc_otg_dump_host_registers(_core_if); */ +#endif /* */ + return; + } + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.chen = 1; + hcchar.b.chdis = 1; + if (!_core_if->dma_enable) { + /* Check for space in the request queue to issue the halt. */ + if (_hc->ep_type == DWC_OTG_EP_TYPE_CONTROL + || _hc->ep_type == DWC_OTG_EP_TYPE_BULK) { + nptxsts.d32 = dwc_read_reg32(&global_regs->gnptxsts); + if (nptxsts.b.nptxqspcavail == 0) { + hcchar.b.chen = 0; + } + } else { + hptxsts.d32 = dwc_read_reg32(&host_global_regs->hptxsts); + if ((hptxsts.b.ptxqspcavail == 0) || + (_core_if->queuing_high_bandwidth)) { + hcchar.b.chen = 0; + } + } + } + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + _hc->halt_status = _halt_status; + if (hcchar.b.chen) { + _hc->halt_pending = 1; + _hc->halt_on_queue = 0; + } else { + _hc->halt_on_queue = 1; + } + DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num); + DWC_DEBUGPL(DBG_HCDV, " hcchar: 0x%08x\n", hcchar.d32); + DWC_DEBUGPL(DBG_HCDV, " halt_pending: %d\n", _hc->halt_pending); + DWC_DEBUGPL(DBG_HCDV, " halt_on_queue: %d\n", _hc->halt_on_queue); + DWC_DEBUGPL(DBG_HCDV, " halt_status: %d\n", _hc->halt_status); + return; +} + + +/** + * Clears the transfer state for a host channel. This function is normally + * called after a transfer is done and the host channel is being released. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _hc Identifies the host channel to clean up. + */ +void dwc_otg_hc_cleanup(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc) +{ + dwc_otg_hc_regs_t * hc_regs; + _hc->xfer_started = 0; + + /* + * Clear channel interrupt enables and any unhandled channel interrupt + * conditions. + */ + hc_regs = _core_if->host_if->hc_regs[_hc->hc_num]; + dwc_write_reg32(&hc_regs->hcintmsk, 0); + dwc_write_reg32(&hc_regs->hcint, 0xFFFFFFFF); + +#ifdef CONFIG_DWC_DEBUG + del_timer(&_core_if->hc_xfer_timer[_hc->hc_num]); + { + hcchar_data_t hcchar; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (hcchar.b.chdis) { + DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n", + __func__, _hc->hc_num, hcchar.d32); + } + } +#endif /* */ +} + + +/** + * Sets the channel property that indicates in which frame a periodic transfer + * should occur. This is always set to the _next_ frame. This function has no + * effect on non-periodic transfers. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _hc Identifies the host channel to set up and its properties. + * @param _hcchar Current value of the HCCHAR register for the specified host + * channel. + */ +static inline void hc_set_even_odd_frame(dwc_otg_core_if_t * _core_if, + dwc_hc_t * _hc, hcchar_data_t * _hcchar) +{ + if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR || + _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + hfnum_data_t hfnum; + hfnum.d32 = dwc_read_reg32(&_core_if->host_if->host_global_regs->hfnum); + + /* 1 if _next_ frame is odd, 0 if it's even */ + _hcchar->b.oddfrm = (hfnum.b.frnum & 0x1) ? 0 : 1; + +#ifdef CONFIG_DWC_DEBUG + if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR && _hc->do_split + && !_hc->complete_split) { + switch (hfnum.b.frnum & 0x7) { + case 7: + _core_if->hfnum_7_samples++; + _core_if->hfnum_7_frrem_accum += hfnum.b.frrem; + break; + case 0: + _core_if->hfnum_0_samples++; + _core_if->hfnum_0_frrem_accum += hfnum.b.frrem; + break; + default: + _core_if->hfnum_other_samples++; + _core_if->hfnum_other_frrem_accum += + hfnum.b.frrem; + break; + } + } +#endif /* */ + } +} + +#ifdef CONFIG_DWC_DEBUG +static void hc_xfer_timeout(unsigned long _ptr) +{ + hc_xfer_info_t * xfer_info = (hc_xfer_info_t *) _ptr; + int hc_num = xfer_info->hc->hc_num; + DWC_WARN("%s: timeout on channel %d\n", __func__, hc_num); + DWC_WARN(" start_hcchar_val 0x%08x\n", + xfer_info->core_if->start_hcchar_val[hc_num]); +} +#endif /* */ + +/* + * This function does the setup for a data transfer for a host channel and + * starts the transfer. May be called in either Slave mode or DMA mode. In + * Slave mode, the caller must ensure that there is sufficient space in the + * request queue and Tx Data FIFO. + * + * For an OUT transfer in Slave mode, it loads a data packet into the + * appropriate FIFO. If necessary, additional data packets will be loaded in + * the Host ISR. + * + * For an IN transfer in Slave mode, a data packet is requested. The data + * packets are unloaded from the Rx FIFO in the Host ISR. If necessary, + * additional data packets are requested in the Host ISR. + * + * For a PING transfer in Slave mode, the Do Ping bit is set in the HCTSIZ + * register along with a packet count of 1 and the channel is enabled. This + * causes a single PING transaction to occur. Other fields in HCTSIZ are + * simply set to 0 since no data transfer occurs in this case. + * + * For a PING transfer in DMA mode, the HCTSIZ register is initialized with + * all the information required to perform the subsequent data transfer. In + * addition, the Do Ping bit is set in the HCTSIZ register. In this case, the + * controller performs the entire PING protocol, then starts the data + * transfer. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _hc Information needed to initialize the host channel. The xfer_len + * value may be reduced to accommodate the max widths of the XferSize and + * PktCnt fields in the HCTSIZn register. The multi_count value may be changed + * to reflect the final xfer_len value. + */ +void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc) +{ + hcchar_data_t hcchar; + hctsiz_data_t hctsiz; + uint16_t num_packets; + uint32_t max_hc_xfer_size = _core_if->core_params->max_transfer_size; + uint16_t max_hc_pkt_count = _core_if->core_params->max_packet_count; + dwc_otg_hc_regs_t * hc_regs = _core_if->host_if->hc_regs[_hc->hc_num]; + hctsiz.d32 = 0; + if (_hc->do_ping) { + if (!_core_if->dma_enable) { + dwc_otg_hc_do_ping(_core_if, _hc); + _hc->xfer_started = 1; + return; + } else { + hctsiz.b.dopng = 1; + } + } + if (_hc->do_split) { + num_packets = 1; + if (_hc->complete_split && !_hc->ep_is_in) { + /* For CSPLIT OUT Transfer, set the size to 0 so the + * core doesn't expect any data written to the FIFO */ + _hc->xfer_len = 0; + } else if (_hc->ep_is_in || (_hc->xfer_len > _hc->max_packet)) { + _hc->xfer_len = _hc->max_packet; + } else if (!_hc->ep_is_in && (_hc->xfer_len > 188)) { + _hc->xfer_len = 188; + } + hctsiz.b.xfersize = _hc->xfer_len; + } else { + /* + * Ensure that the transfer length and packet count will fit + * in the widths allocated for them in the HCTSIZn register. + */ + if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR + || _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + /* + * Make sure the transfer size is no larger than one + * (micro)frame's worth of data. (A check was done + * when the periodic transfer was accepted to ensure + * that a (micro)frame's worth of data can be + * programmed into a channel.) + */ + uint32_t max_periodic_len = _hc->multi_count * _hc->max_packet; + if (_hc->xfer_len > max_periodic_len) { + _hc->xfer_len = max_periodic_len; + } else { + } + } else if (_hc->xfer_len > max_hc_xfer_size) { + /* Make sure that xfer_len is a multiple of max packet size. */ + _hc->xfer_len = max_hc_xfer_size - _hc->max_packet + 1; + } + if (_hc->xfer_len > 0) { + num_packets = (_hc->xfer_len + _hc->max_packet - 1) / _hc->max_packet; + if (num_packets > max_hc_pkt_count) { + num_packets = max_hc_pkt_count; + _hc->xfer_len = num_packets * _hc->max_packet; + } + } else { + /* Need 1 packet for transfer length of 0. */ + num_packets = 1; + } + if (_hc->ep_is_in) { + /* Always program an integral # of max packets for IN transfers. */ + _hc->xfer_len = num_packets * _hc->max_packet; + } + if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR + || _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + /* + * Make sure that the multi_count field matches the + * actual transfer length. + */ + _hc->multi_count = num_packets; + } + if (_hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + /* Set up the initial PID for the transfer. */ + if (_hc->speed == DWC_OTG_EP_SPEED_HIGH) { + if (_hc->ep_is_in) { + if (_hc->multi_count == 1) { + _hc->data_pid_start = + DWC_OTG_HC_PID_DATA0; + } else if (_hc->multi_count == 2) { + _hc->data_pid_start = + DWC_OTG_HC_PID_DATA1; + } else { + _hc->data_pid_start = + DWC_OTG_HC_PID_DATA2; + } + } else { + if (_hc->multi_count == 1) { + _hc->data_pid_start = + DWC_OTG_HC_PID_DATA0; + } else { + _hc->data_pid_start = + DWC_OTG_HC_PID_MDATA; + } + } + } else { + _hc->data_pid_start = DWC_OTG_HC_PID_DATA0; + } + } + hctsiz.b.xfersize = _hc->xfer_len; + } + _hc->start_pkt_count = num_packets; + hctsiz.b.pktcnt = num_packets; + hctsiz.b.pid = _hc->data_pid_start; + dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32); + DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num); + DWC_DEBUGPL(DBG_HCDV, " Xfer Size: %d\n", hctsiz.b.xfersize); + DWC_DEBUGPL(DBG_HCDV, " Num Pkts: %d\n", hctsiz.b.pktcnt); + DWC_DEBUGPL(DBG_HCDV, " Start PID: %d\n", hctsiz.b.pid); + if (_core_if->dma_enable) { + dwc_write_reg32(&hc_regs->hcdma, (uint32_t) _hc->xfer_buff); + } + + /* Start the split */ + if (_hc->do_split) { + hcsplt_data_t hcsplt; + hcsplt.d32 = dwc_read_reg32(&hc_regs->hcsplt); + hcsplt.b.spltena = 1; + dwc_write_reg32(&hc_regs->hcsplt, hcsplt.d32); + } + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.multicnt = _hc->multi_count; + hc_set_even_odd_frame(_core_if, _hc, &hcchar); + +#ifdef CONFIG_DWC_DEBUG + _core_if->start_hcchar_val[_hc->hc_num] = hcchar.d32; + if (hcchar.b.chdis) { + DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n", + __func__, _hc->hc_num, hcchar.d32); + } + +#endif /* */ + + /* Set host channel enable after all other setup is complete. */ + hcchar.b.chen = 1; + hcchar.b.chdis = 0; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + _hc->xfer_started = 1; + _hc->requests++; + if (!_core_if->dma_enable && !_hc->ep_is_in && _hc->xfer_len > 0) { + /* Load OUT packet into the appropriate Tx FIFO. */ + dwc_otg_hc_write_packet(_core_if, _hc); + } + +#ifdef CONFIG_DWC_DEBUG + /* Start a timer for this transfer. */ + _core_if->hc_xfer_timer[_hc->hc_num].function = hc_xfer_timeout; + _core_if->hc_xfer_info[_hc->hc_num].core_if = _core_if; + _core_if->hc_xfer_info[_hc->hc_num].hc = _hc; + _core_if->hc_xfer_timer[_hc->hc_num].data = + (unsigned long)(&_core_if->hc_xfer_info[_hc->hc_num]); + _core_if->hc_xfer_timer[_hc->hc_num].expires = jiffies + (HZ * 10); + add_timer(&_core_if->hc_xfer_timer[_hc->hc_num]); +#endif /* */ +} + +/** + * This function continues a data transfer that was started by previous call + * to <code>dwc_otg_hc_start_transfer</code>. The caller must ensure there is + * sufficient space in the request queue and Tx Data FIFO. This function + * should only be called in Slave mode. In DMA mode, the controller acts + * autonomously to complete transfers programmed to a host channel. + * + * For an OUT transfer, a new data packet is loaded into the appropriate FIFO + * if there is any data remaining to be queued. For an IN transfer, another + * data packet is always requested. For the SETUP phase of a control transfer, + * this function does nothing. + * + * @return 1 if a new request is queued, 0 if no more requests are required + * for this transfer. + */ +int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc) +{ + DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num); + if (_hc->do_split) { + /* SPLITs always queue just once per channel */ + return 0; + } else if (_hc->data_pid_start == DWC_OTG_HC_PID_SETUP) { + /* SETUPs are queued only once since they can't be NAKed. */ + return 0; + } else if (_hc->ep_is_in) { + /* + * Always queue another request for other IN transfers. If + * back-to-back INs are issued and NAKs are received for both, + * the driver may still be processing the first NAK when the + * second NAK is received. When the interrupt handler clears + * the NAK interrupt for the first NAK, the second NAK will + * not be seen. So we can't depend on the NAK interrupt + * handler to requeue a NAKed request. Instead, IN requests + * are issued each time this function is called. When the + * transfer completes, the extra requests for the channel will + * be flushed. + */ + hcchar_data_t hcchar; + dwc_otg_hc_regs_t * hc_regs = _core_if->host_if->hc_regs[_hc->hc_num]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hc_set_even_odd_frame(_core_if, _hc, &hcchar); + hcchar.b.chen = 1; + hcchar.b.chdis = 0; + DWC_DEBUGPL(DBG_HCDV, " IN xfer: hcchar = 0x%08x\n", hcchar.d32); + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + _hc->requests++; + return 1; + } else { + /* OUT transfers. */ + if (_hc->xfer_count < _hc->xfer_len) { + if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR || + _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + hcchar_data_t hcchar; + dwc_otg_hc_regs_t * hc_regs; + hc_regs = _core_if->host_if->hc_regs[_hc->hc_num]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hc_set_even_odd_frame(_core_if, _hc, &hcchar); + } + + /* Load OUT packet into the appropriate Tx FIFO. */ + dwc_otg_hc_write_packet(_core_if, _hc); + _hc->requests++; + return 1; + } else { + return 0; + } + } +} + +/** + * Starts a PING transfer. This function should only be called in Slave mode. + * The Do Ping bit is set in the HCTSIZ register, then the channel is enabled. + */ +void dwc_otg_hc_do_ping(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc) +{ + hcchar_data_t hcchar; + hctsiz_data_t hctsiz; + dwc_otg_hc_regs_t * hc_regs = _core_if->host_if->hc_regs[_hc->hc_num]; + DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num); + hctsiz.d32 = 0; + hctsiz.b.dopng = 1; + hctsiz.b.pktcnt = 1; + dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32); + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.chen = 1; + hcchar.b.chdis = 0; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); +} + + +#ifdef CONFIG_OTG_PLB_DMA /* PPC_PLB_DMA mode */ +/* + * This will dump the status of the dma registers - + * Only used in debug mode + */ +void ppc4xx_dump_dma(unsigned int dmanr) +{ + int index; + + printk("%32s:\n", __FUNCTION__); + for (index=0; index<=7; index++) { + printk("%32s dmanr=%d , 0x%x=0x%x\n",__FUNCTION__, dmanr , + DCRN_DMACR0 + dmanr*8+index, mfdcr(DCRN_DMACR0 + dmanr*8 + index)); + } + printk("%32s DCRN_DMASR=0x%x\n", __FUNCTION__, mfdcr(DCRN_DMASR)); +} + +/* + * This function programs the PLB-DMA engine to perform MEM-MEM transfer + * This is used to RD & WR from the DWC_FIFO by the PLB_DMA engine + */ +void ppc4xx_start_plb_dma(dwc_otg_core_if_t *_core_if, void *src, void *dst, unsigned int length, + unsigned int use_interrupt, unsigned int dma_ch, unsigned int dma_dir) +{ + int res = 0; + unsigned int control; + ppc_dma_ch_t p_init; + + memset((char *)&p_init, sizeof(p_init), 0); + p_init.polarity = 0; + p_init.pwidth = PW_32; + p_init.in_use = 0; + if ( dma_dir == OTG_TX_DMA) { + p_init.sai = 1; + p_init.dai = 0; + } else if (dma_dir == OTG_RX_DMA) { + p_init.sai = 0; + p_init.dai = 1; + } + res = ppc4xx_init_dma_channel(dma_ch, &p_init); + if (res) { + printk("%32s: nit_dma_channel return %d %d bytes dest %p\n", + __FUNCTION__, res, length, dst); + } + res = ppc4xx_clr_dma_status(dma_ch); + if (res) { + printk("%32s: ppc4xx_clr_dma_status %d\n", __FUNCTION__, res); + } + + if (dma_dir == OTG_TX_DMA) { + ppc4xx_set_src_addr(dma_ch, virt_to_bus (src)); + ppc4xx_set_dst_addr(dma_ch, (_core_if->phys_addr + + (dst - (void *)(_core_if->core_global_regs))) ); + } else if (dma_dir == OTG_RX_DMA) { + ppc4xx_set_src_addr(dma_ch, (_core_if->phys_addr + + (src - (void *)(_core_if->core_global_regs))) ); + ppc4xx_set_dst_addr(dma_ch, virt_to_bus (dst)); + } + + ppc4xx_set_dma_mode(dma_ch, DMA_MODE_MM); + ppc4xx_set_dma_count(dma_ch, length); + + /* flush cache before enabling DMA transfer */ + if (dma_dir == OTG_TX_DMA) { + flush_dcache_range((unsigned long)src, + (unsigned long)(src + length)); + } else if (dma_dir == OTG_RX_DMA) { + flush_dcache_range((unsigned long)dst, + (unsigned long)(dst + length)); + } + + if (use_interrupt) { + res = ppc4xx_enable_dma_interrupt(dma_ch); + } else { + res = ppc4xx_disable_dma_interrupt(dma_ch); + } + if (res) { + printk("%32s: en/disable_dma_interrupt %d return %d per %d\n", + __FUNCTION__, use_interrupt, res, + ppc4xx_get_peripheral_width(dma_ch)); + } + + control = mfdcr(DCRN_DMACR0 + (dma_ch * 8)); + + control &= ~(SET_DMA_BEN(1)); + control &= ~(SET_DMA_PSC(3)); + control &= ~(SET_DMA_PWC(0x3f)); + control &= ~(SET_DMA_PHC(0x7)); + control &= ~(SET_DMA_PL(1)); + + mtdcr(DCRN_DMACR0 + (dma_ch * 8), control); + +#ifdef OTG_PLB_DMA_DBG + ppc4xx_dump_dma(dma_ch); +#endif + ppc4xx_enable_dma(dma_ch); +} +#endif + +/* + * This function writes a packet into the Tx FIFO associated with the Host + * Channel. For a channel associated with a non-periodic EP, the non-periodic + * Tx FIFO is written. For a channel associated with a periodic EP, the + * periodic Tx FIFO is written. This function should only be called in Slave + * mode. + * + * Upon return the xfer_buff and xfer_count fields in _hc are incremented by + * then number of bytes written to the Tx FIFO. + */ +void dwc_otg_hc_write_packet(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc) +{ +#ifndef CONFIG_OTG_PLB_DMA + uint32_t i; +#endif + uint32_t remaining_count; + uint32_t byte_count; + uint32_t dword_count; + uint32_t * data_buff = (uint32_t *) (_hc->xfer_buff); + uint32_t * data_fifo = _core_if->data_fifo[_hc->hc_num]; +#if !defined( CONFIG_OTG_PLB_DMA_TASKLET) && defined(CONFIG_OTG_PLB_DMA) + uint32_t dma_sts = 0; +#endif + remaining_count = _hc->xfer_len - _hc->xfer_count; + if (remaining_count > _hc->max_packet) { + byte_count = _hc->max_packet; + } else { + byte_count = remaining_count; + } + dword_count = (byte_count + 3) / 4; + +#ifdef CONFIG_OTG_PLB_DMA +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + + if ( _hc->xfer_len < USB_BUFSIZ) { + int i; + if ((((unsigned long)data_buff) & 0x3) == 0) { + /* xfer_buff is DWORD aligned. */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_datafifo32(data_fifo, *data_buff); + } + } else { + /* xfer_buff is not DWORD aligned. */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_datafifo32(data_fifo, get_unaligned(data_buff)); + } + } + } else { + DWC_DEBUGPL(DBG_SP, "%s set release_later %d\n", __func__, dword_count); + atomic_set(& release_later, 1); + //disable_irq_nosync(94); + dwc_otg_disable_global_interrupts(_core_if); + + _core_if->dma_xfer.dma_data_buff = data_buff; + _core_if->dma_xfer.dma_data_fifo = (void *)data_fifo; + _core_if->dma_xfer.dma_count = dword_count; + _core_if->dma_xfer.dma_dir = OTG_TX_DMA; + tasklet_schedule(_core_if->plbdma_tasklet); + } +#else /* !CONFIG_OTG_PLB_DMA_TASKLET */ + if ((((unsigned long)data_buff) & 0x3) == 0) { + /* call tx_dma - src,dest,len,intr */ + ppc4xx_start_plb_dma(_core_if, (void *)data_buff, data_fifo, + (dword_count * 4), PLB_DMA_INT_DIS, PLB_DMA_CH, OTG_TX_DMA); + } else { + ppc4xx_start_plb_dma(_core_if, (void *)get_unaligned(data_buff), + data_fifo, (dword_count * 4), PLB_DMA_INT_DIS, PLB_DMA_CH, OTG_TX_DMA); + } + + while (mfdcr(DCRN_DMACR0 + (PLB_DMA_CH*8)) & DMA_CE_ENABLE) { + } + dma_sts = (uint32_t)ppc4xx_get_dma_status(); +#ifdef OTG_PLB_DMA_DBG + if (!(dma_sts & DMA_CS0)) { + printk("Status (Terminal Count not occured) 0x%08x\n", mfdcr(DCRN_DMASR)); + } +#endif + if (dma_sts & DMA_CH0_ERR) { + printk("Status (Channel Error) 0x%08x\n", mfdcr(DCRN_DMASR)); + } + ppc4xx_clr_dma_status(PLB_DMA_CH); +#ifdef OTG_PLB_DMA_DBG + printk("%32s DMA Status =0x%08x\n", __FUNCTION__, mfdcr(DCRN_DMASR)); /* vj_dbg */ +#endif + +#endif /* CONFIG_OTG_PLB_DMA_TASKLET */ + + +#else + if ((((unsigned long)data_buff) & 0x3) == 0) { + /* xfer_buff is DWORD aligned. */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_datafifo32(data_fifo, *data_buff); + } + } else { + /* xfer_buff is not DWORD aligned. */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_datafifo32(data_fifo, get_unaligned(data_buff)); + } + } +#endif + _hc->xfer_count += byte_count; + _hc->xfer_buff += byte_count; +} + +/** + * Gets the current USB frame number. This is the frame number from the last + * SOF packet. + */ +uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * _core_if) +{ + dsts_data_t dsts; + dsts.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts); + /* read current frame/microfreme number from DSTS register */ + return dsts.b.soffn; +} + + +/** + * This function reads a setup packet from the Rx FIFO into the destination + * buffer. This function is called from the Rx Status Queue Level (RxStsQLvl) + * Interrupt routine when a SETUP packet has been received in Slave mode. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _dest Destination buffer for packet data. + */ +void dwc_otg_read_setup_packet(dwc_otg_core_if_t * _core_if, uint32_t * _dest) +{ + /* Get the 8 bytes of a setup transaction data */ + + /* Pop 2 DWORDS off the receive data FIFO into memory */ + _dest[0] = dwc_read_datafifo32(_core_if->data_fifo[0]); + _dest[1] = dwc_read_datafifo32(_core_if->data_fifo[0]); +} + +/** + * This function enables EP0 OUT to receive SETUP packets and configures EP0 + * IN for transmitting packets. It is normally called when the + * "Enumeration Done" interrupt occurs. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP0 data. + */ +void dwc_otg_ep0_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + dwc_otg_dev_if_t * dev_if = _core_if->dev_if; + dsts_data_t dsts; + depctl_data_t diepctl; + depctl_data_t doepctl; + dctl_data_t dctl = {.d32 = 0}; + + /* Read the Device Status and Endpoint 0 Control registers */ + dsts.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dsts); + diepctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl); + doepctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl); + + /* Set the MPS of the IN EP based on the enumeration speed */ + switch (dsts.b.enumspd) { + case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ: + case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ: + case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ: + diepctl.b.mps = DWC_DEP0CTL_MPS_64; + break; + case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ: + diepctl.b.mps = DWC_DEP0CTL_MPS_8; + break; + } + dwc_write_reg32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32); + + /* Enable OUT EP for receive */ + doepctl.b.epena = 1; + dwc_write_reg32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32); + +#ifdef VERBOSE + DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n", + dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl)); + DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n", + dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl)); + +#endif /* */ + dctl.b.cgnpinnak = 1; + dwc_modify_reg32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32); + DWC_DEBUGPL(DBG_PCDV, "dctl=%0x\n", + dwc_read_reg32(&dev_if->dev_global_regs->dctl)); +} + + +/** + * This function activates an EP. The Device EP control register for + * the EP is configured as defined in the ep structure. Note: This + * function is not used for EP0. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP to activate. + */ +void dwc_otg_ep_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + dwc_otg_dev_if_t * dev_if = _core_if->dev_if; + depctl_data_t depctl; + volatile uint32_t *addr; + daint_data_t daintmsk = {.d32 = 0}; + DWC_DEBUGPL(DBG_PCDV, "%s() EP%d-%s\n", __func__, _ep->num, + (_ep->is_in ? "IN" : "OUT")); + + /* Read DEPCTLn register */ + if (_ep->is_in == 1) { + addr = &dev_if->in_ep_regs[_ep->num]->diepctl; + daintmsk.ep.in = 1 << _ep->num; + } else { + addr = &dev_if->out_ep_regs[_ep->num]->doepctl; + daintmsk.ep.out = 1 << _ep->num; + } + + /* If the EP is already active don't change the EP Control + * register. + */ + depctl.d32 = dwc_read_reg32(addr); + if (!depctl.b.usbactep) { + depctl.b.mps = _ep->maxpacket; + depctl.b.eptype = _ep->type; + depctl.b.txfnum = _ep->tx_fifo_num; + if (_ep->type == DWC_OTG_EP_TYPE_ISOC) { + depctl.b.setd0pid = 1; // ??? + } else { + depctl.b.setd0pid = 1; + } + depctl.b.usbactep = 1; + dwc_write_reg32(addr, depctl.d32); + DWC_DEBUGPL(DBG_PCDV, "DEPCTL=%08x\n", dwc_read_reg32(addr)); + } + + /* Enable the Interrupt for this EP */ + dwc_modify_reg32(&dev_if->dev_global_regs->daintmsk, 0, + daintmsk.d32); + DWC_DEBUGPL(DBG_PCDV, "DAINTMSK=%0x\n", + dwc_read_reg32(&dev_if->dev_global_regs->daintmsk)); + _ep->stall_clear_flag = 0; + return; +} + + +/** + * This function deactivates an EP. This is done by clearing the USB Active + * EP bit in the Device EP control register. Note: This function is not used + * for EP0. EP0 cannot be deactivated. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP to deactivate. + */ +void dwc_otg_ep_deactivate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + depctl_data_t depctl = {.d32 = 0}; + volatile uint32_t *addr; + daint_data_t daintmsk = {.d32 = 0}; + + /* Read DEPCTLn register */ + if (_ep->is_in == 1) { + addr = &_core_if->dev_if->in_ep_regs[_ep->num]->diepctl; + daintmsk.ep.in = 1 << _ep->num; + } else { + addr = &_core_if->dev_if->out_ep_regs[_ep->num]->doepctl; + daintmsk.ep.out = 1 << _ep->num; + } + depctl.b.usbactep = 0; + dwc_write_reg32(addr, depctl.d32); + + /* Disable the Interrupt for this EP */ + dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->daintmsk, + daintmsk.d32, 0); + return; +} + + +/** + * This function does the setup for a data transfer for an EP and + * starts the transfer. For an IN transfer, the packets will be + * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers, + * the packets are unloaded from the Rx FIFO in the ISR. the ISR. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP to start the transfer on. + */ +void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + /** @todo Refactor this funciton to check the transfer size + * count value does not execed the number bits in the Transfer + * count register. */ + depctl_data_t depctl; + deptsiz_data_t deptsiz; + gintmsk_data_t intr_mask = {.d32 = 0}; + +#ifdef CHECK_PACKET_COUNTER_WIDTH + const uint32_t MAX_XFER_SIZE = _core_if->core_params->max_transfer_size; + const uint32_t MAX_PKT_COUNT = _core_if->core_params->max_packet_count; + uint32_t num_packets; + uint32_t transfer_len; + dwc_otg_dev_out_ep_regs_t * out_regs = _core_if->dev_if->out_ep_regs[_ep->num]; + dwc_otg_dev_in_ep_regs_t * in_regs = _core_if->dev_if->in_ep_regs[_ep->num]; + gnptxsts_data_t txstatus; + int lvl = SET_DEBUG_LEVEL(DBG_PCD); + DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d " + "xfer_buff=%p start_xfer_buff=%p\n", _ep->num, + (_ep->is_in ? "IN" : "OUT"), _ep->xfer_len, + _ep->xfer_count, _ep->xfer_buff, _ep->start_xfer_buff); + transfer_len = _ep->xfer_len - _ep->xfer_count; + if (transfer_len > MAX_XFER_SIZE) { + transfer_len = MAX_XFER_SIZE; + } + if (transfer_len == 0) { + num_packets = 1; + + /* OUT EP to recieve Zero-length packet set transfer + * size to maxpacket size. */ + if (!_ep->is_in) { + transfer_len = _ep->maxpacket; + } + } else { + num_packets = (transfer_len + _ep->maxpacket - 1) / _ep->maxpacket; + if (num_packets > MAX_PKT_COUNT) { + num_packets = MAX_PKT_COUNT; + } + } + DWC_DEBUGPL(DBG_PCD, "transfer_len=%d #pckt=%d\n", transfer_len, + num_packets); + deptsiz.b.xfersize = transfer_len; + deptsiz.b.pktcnt = num_packets; + + /* IN endpoint */ + if (_ep->is_in == 1) { + depctl.d32 = dwc_read_reg32(&in_regs->diepctl); + } /* OUT endpoint */ + else { + depctl.d32 = dwc_read_reg32(&out_regs->doepctl); + } + + /* EP enable, IN data in FIFO */ + depctl.b.cnak = 1; + depctl.b.epena = 1; + + /* IN endpoint */ + if (_ep->is_in == 1) { + txstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts); + if (txstatus.b.nptxqspcavail == 0) { + DWC_DEBUGPL(DBG_ANY, "TX Queue Full (0x%0x)\n", + txstatus.d32); + return; + } + dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32); + dwc_write_reg32(&in_regs->diepctl, depctl.d32); + + /** + * Enable the Non-Periodic Tx FIFO empty interrupt, the + * data will be written into the fifo by the ISR. + */ + if (_core_if->dma_enable) { + dwc_write_reg32(&in_regs->diepdma, (uint32_t) _ep->xfer_buff); + } else { + if (_core_if->en_multiple_tx_fifo == 0) { + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&_core_if->core_global_regs->gintsts, + intr_mask.d32, 0); + dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, + intr_mask.d32,intr_mask.d32); + } else { + /* Enable the Tx FIFO Empty Interrupt for this EP */ + if (_ep->xfer_len > 0 && + _ep->type != DWC_OTG_EP_TYPE_ISOC) { + uint32_t fifoemptymsk = 0; + fifoemptymsk = (0x1 << _ep->num); + dwc_modify_reg32(&_core_if->dev_if->dev_global_regs-> + dtknqr4_fifoemptymsk,0, fifoemptymsk); + } + } + } + } else { + /* OUT endpoint */ + dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32); + dwc_write_reg32(&out_regs->doepctl, depctl.d32); + if (_core_if->dma_enable) { + dwc_write_reg32(&out_regs->doepdma,(uint32_t) _ep->xfer_buff); + } + } + DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n", + dwc_read_reg32(&out_regs->doepctl), + dwc_read_reg32(&out_regs->doeptsiz)); + DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n", + dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk), + dwc_read_reg32(&_core_if->core_global_regs->gintmsk)); + SET_DEBUG_LEVEL(lvl); + +#endif /* */ + DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__); + DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d " + "xfer_buff=%p start_xfer_buff=%p\n", _ep->num, + (_ep->is_in ? "IN" : "OUT"), _ep->xfer_len, + _ep->xfer_count, _ep->xfer_buff, _ep->start_xfer_buff); + + /* IN endpoint */ + if (_ep->is_in == 1) { + dwc_otg_dev_in_ep_regs_t * in_regs = _core_if->dev_if->in_ep_regs[_ep->num]; + gnptxsts_data_t gtxstatus; + gtxstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts); + if (_core_if->en_multiple_tx_fifo == 0 && + gtxstatus.b.nptxqspcavail == 0) { +#ifdef CONFIG_DWC_DEBUG + DWC_PRINT("TX Queue Full (0x%0x)\n", gtxstatus.d32); +#endif /* */ + return; + } + depctl.d32 = dwc_read_reg32(&(in_regs->diepctl)); + deptsiz.d32 = dwc_read_reg32(&(in_regs->dieptsiz)); + + /* Zero Length Packet? */ + if (_ep->xfer_len == 0) { + deptsiz.b.xfersize = 0; + deptsiz.b.pktcnt = 1; + } else { + /* Program the transfer size and packet count + * as follows: xfersize = N * maxpacket + + * short_packet pktcnt = N + (short_packet + * exist ? 1 : 0) + */ + +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * Since the 405EZ (Ultra) only support 2047 bytes as + * max transfer size, we have to split up bigger transfers + * into multiple transfers of 1024 bytes sized messages. + * I happens often, that transfers of 4096 bytes are + * required (zero-gadget, file_storage-gadget). + */ + if (_ep->xfer_len > MAX_XFER_LEN) { + _ep->bytes_pending = _ep->xfer_len - MAX_XFER_LEN; + _ep->xfer_len = MAX_XFER_LEN; + } +#endif + + deptsiz.b.xfersize = _ep->xfer_len; + deptsiz.b.pktcnt = (_ep->xfer_len - 1 + _ep->maxpacket) / _ep->maxpacket; + } + dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32); + + /* Write the DMA register */ + if (_core_if->dma_enable) { + dwc_write_reg32(&(in_regs->diepdma), (uint32_t) _ep->dma_addr); + } else { + if (_ep->type != DWC_OTG_EP_TYPE_ISOC) { + /** + * Enable the Non-Periodic Tx FIFO empty interrupt, + * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode, + * the data will be written into the fifo by the ISR. + */ + if (_core_if->en_multiple_tx_fifo == 0) { + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&_core_if->core_global_regs->gintsts, + intr_mask.d32, 0); + dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, + intr_mask.d32, intr_mask.d32); + } else { + /* Enable the Tx FIFO Empty Interrupt for this EP */ + if (_ep->xfer_len > 0) { + uint32_t fifoemptymsk = 0; + fifoemptymsk = 1 << _ep->num; + dwc_modify_reg32(&_core_if->dev_if->dev_global_regs-> + dtknqr4_fifoemptymsk,0,fifoemptymsk); + } + } + } + } + + /* EP enable, IN data in FIFO */ + depctl.b.cnak = 1; + depctl.b.epena = 1; + dwc_write_reg32(&in_regs->diepctl, depctl.d32); + if (_core_if->dma_enable) { + depctl.d32 = dwc_read_reg32(&_core_if->dev_if->in_ep_regs[0]->diepctl); + depctl.b.nextep = _ep->num; + dwc_write_reg32(&_core_if->dev_if->in_ep_regs[0]->diepctl, depctl.d32); + } + } else { + /* OUT endpoint */ + dwc_otg_dev_out_ep_regs_t * out_regs = _core_if->dev_if->out_ep_regs[_ep->num]; + depctl.d32 = dwc_read_reg32(&(out_regs->doepctl)); + deptsiz.d32 = dwc_read_reg32(&(out_regs->doeptsiz)); + + /* Program the transfer size and packet count as follows: + * + * pktcnt = N + * xfersize = N * maxpacket + */ + if (_ep->xfer_len == 0) { + /* Zero Length Packet */ + deptsiz.b.xfersize = _ep->maxpacket; + deptsiz.b.pktcnt = 1; + } else { + deptsiz.b.pktcnt = (_ep->xfer_len + (_ep->maxpacket - 1)) / _ep->maxpacket; + deptsiz.b.xfersize = deptsiz.b.pktcnt * _ep->maxpacket; + } + dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32); + DWC_DEBUGPL(DBG_PCDV, "ep%d xfersize=%d pktcnt=%d\n", + _ep->num, deptsiz.b.xfersize, deptsiz.b.pktcnt); + if (_core_if->dma_enable) { + dwc_write_reg32(&(out_regs->doepdma), + (uint32_t) _ep->dma_addr); + } + if (_ep->type == DWC_OTG_EP_TYPE_ISOC) { + /** @todo NGS: dpid is read-only. Use setd0pid + * or setd1pid. */ + if (_ep->even_odd_frame) { + depctl.b.setd1pid = 1; + } else { + depctl.b.setd0pid = 1; + } + } + + /* EP enable */ + depctl.b.cnak = 1; + depctl.b.epena = 1; + dwc_write_reg32(&out_regs->doepctl, depctl.d32); + DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n", + dwc_read_reg32(&out_regs->doepctl), + dwc_read_reg32(&out_regs->doeptsiz)); + DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n", + dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk), + dwc_read_reg32(&_core_if->core_global_regs->gintmsk)); + } +} + +/** + * This function does the setup for a data transfer for EP0 and starts + * the transfer. For an IN transfer, the packets will be loaded into + * the appropriate Tx FIFO in the ISR. For OUT transfers, the packets are + * unloaded from the Rx FIFO in the ISR. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP0 data. + */ +void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + volatile depctl_data_t depctl; + volatile deptsiz0_data_t deptsiz; + gintmsk_data_t intr_mask = {.d32 = 0}; + DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d " + "xfer_buff=%p start_xfer_buff=%p total_len=%d\n", + _ep->num, (_ep->is_in ? "IN" : "OUT"), _ep->xfer_len, + _ep->xfer_count, _ep->xfer_buff, _ep->start_xfer_buff, + _ep->total_len); + _ep->total_len = _ep->xfer_len; + + /* IN endpoint */ + if (_ep->is_in == 1) { + dwc_otg_dev_in_ep_regs_t * in_regs = _core_if->dev_if->in_ep_regs[0]; + gnptxsts_data_t gtxstatus; + gtxstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts); + if (_core_if->en_multiple_tx_fifo == 0 && + gtxstatus.b.nptxqspcavail == 0) { +#ifdef CONFIG_DWC_DEBUG + deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz); + DWC_DEBUGPL(DBG_PCD, "DIEPCTL0=%0x\n", + dwc_read_reg32(&in_regs->diepctl)); + DWC_DEBUGPL(DBG_PCD, "DIEPTSIZ0=%0x (sz=%d, pcnt=%d)\n", + deptsiz.d32, deptsiz.b.xfersize,deptsiz.b.pktcnt); + DWC_PRINT("TX Queue or FIFO Full (0x%0x)\n", gtxstatus.d32); +#endif /* */ + printk("TX Queue or FIFO Full!!!!\n"); // test-only + return; + } + depctl.d32 = dwc_read_reg32(&in_regs->diepctl); + deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz); + + /* Zero Length Packet? */ + if (_ep->xfer_len == 0) { + deptsiz.b.xfersize = 0; + deptsiz.b.pktcnt = 1; + } else { + /* Program the transfer size and packet count + * as follows: xfersize = N * maxpacket + + * short_packet pktcnt = N + (short_packet + * exist ? 1 : 0) + */ + if (_ep->xfer_len > _ep->maxpacket) { + _ep->xfer_len = _ep->maxpacket; + deptsiz.b.xfersize = _ep->maxpacket; + } else { + deptsiz.b.xfersize = _ep->xfer_len; + } + deptsiz.b.pktcnt = 1; + } + dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32); + DWC_DEBUGPL(DBG_PCDV,"IN len=%d xfersize=%d pktcnt=%d [%08x]\n", + _ep->xfer_len, deptsiz.b.xfersize,deptsiz.b.pktcnt, deptsiz.d32); + + /* Write the DMA register */ + if (_core_if->dma_enable) { + dwc_write_reg32(&(in_regs->diepdma), (uint32_t) _ep->dma_addr); + } + + /* EP enable, IN data in FIFO */ + depctl.b.cnak = 1; + depctl.b.epena = 1; + dwc_write_reg32(&in_regs->diepctl, depctl.d32); + + /** + * Enable the Non-Periodic Tx FIFO empty interrupt, the + * data will be written into the fifo by the ISR. + */ + if (!_core_if->dma_enable) { + if (_core_if->en_multiple_tx_fifo == 0) { + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&_core_if->core_global_regs->gintsts, intr_mask.d32, 0); + dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, intr_mask.d32, + intr_mask.d32); + } else { + /* Enable the Tx FIFO Empty Interrupt for this EP */ + if (_ep->xfer_len > 0) { + uint32_t fifoemptymsk = 0; + fifoemptymsk |= 1 << _ep->num; + dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk, + 0, fifoemptymsk); + } + } + } + } else { + /* OUT endpoint */ + dwc_otg_dev_out_ep_regs_t * out_regs = _core_if->dev_if->out_ep_regs[_ep->num]; + depctl.d32 = dwc_read_reg32(&out_regs->doepctl); + deptsiz.d32 = dwc_read_reg32(&out_regs->doeptsiz); + + /* Program the transfer size and packet count as follows: + * xfersize = N * (maxpacket + 4 - (maxpacket % 4)) + * pktcnt = N */ + if (_ep->xfer_len == 0) { + /* Zero Length Packet */ + deptsiz.b.xfersize = _ep->maxpacket; + deptsiz.b.pktcnt = 1; + } else { + deptsiz.b.pktcnt = (_ep->xfer_len + (_ep->maxpacket - 1)) / _ep->maxpacket; + deptsiz.b.xfersize = deptsiz.b.pktcnt * _ep->maxpacket; + } + dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32); + DWC_DEBUGPL(DBG_PCDV, "len=%d xfersize=%d pktcnt=%d\n", + _ep->xfer_len, deptsiz.b.xfersize,deptsiz.b.pktcnt); + if (_core_if->dma_enable) { + dwc_write_reg32(&(out_regs->doepdma), (uint32_t) _ep->dma_addr); + } + + /* EP enable */ + depctl.b.cnak = 1; + depctl.b.epena = 1; + dwc_write_reg32(&(out_regs->doepctl), depctl.d32); + } +} + + +/** + * This function continues control IN transfers started by + * dwc_otg_ep0_start_transfer, when the transfer does not fit in a + * single packet. NOTE: The DIEPCTL0/DOEPCTL0 registers only have one + * bit for the packet count. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP0 data. + */ +void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * _core_if, + dwc_ep_t * _ep) +{ + depctl_data_t depctl; + deptsiz0_data_t deptsiz; + gintmsk_data_t intr_mask = {.d32 = 0}; + if (_ep->is_in == 1) { + dwc_otg_dev_in_ep_regs_t * in_regs = _core_if->dev_if->in_ep_regs[0]; + gnptxsts_data_t tx_status = {.d32 = 0}; + tx_status.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts); + + /** @todo Should there be check for room in the Tx + * Status Queue. If not remove the code above this comment. */ + depctl.d32 = dwc_read_reg32(&in_regs->diepctl); + deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz); + + /* Program the transfer size and packet count + * as follows: xfersize = N * maxpacket + + * short_packet pktcnt = N + (short_packet + * exist ? 1 : 0) + */ + deptsiz.b.xfersize = (_ep->total_len - _ep->xfer_count) > + _ep->maxpacket ? _ep->maxpacket : (_ep->total_len - + _ep->xfer_count); + deptsiz.b.pktcnt = 1; + _ep->xfer_len += deptsiz.b.xfersize; + dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32); + DWC_DEBUGPL(DBG_PCDV,"IN len=%d xfersize=%d pktcnt=%d [%08x]\n", + _ep->xfer_len, deptsiz.b.xfersize,deptsiz.b.pktcnt, deptsiz.d32); + + /* Write the DMA register */ + if (_core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) { + dwc_write_reg32(&(in_regs->diepdma),(uint32_t) _ep->dma_addr); + } + + /* EP enable, IN data in FIFO */ + depctl.b.cnak = 1; + depctl.b.epena = 1; + dwc_write_reg32(&in_regs->diepctl, depctl.d32); + + /** + * Enable the Non-Periodic Tx FIFO empty interrupt, the + * data will be written into the fifo by the ISR. + */ + if (!_core_if->dma_enable) { + /* First clear it from GINTSTS */ + intr_mask.b.nptxfempty = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, + intr_mask.d32); + dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, + intr_mask.d32, intr_mask.d32); + } + } +} + +#ifdef CONFIG_DWC_DEBUG +void dump_msg(const u8 * buf, unsigned int length) +{ + unsigned int start, num, i; + char line[52], *p; + if (length >= 512) + return; + start = 0; + while (length > 0) { + num = min(length, 16u); + p = line; + for (i = 0; i < num; ++i) { + if (i == 8) + *p++ = ' '; + sprintf(p, " %02x", buf[i]); + p += 3; + } + *p = 0; + DWC_PRINT("%6x: %s\n", start, line); + buf += num; + start += num; + length -= num; + } +} + + +#else /* */ +static inline void dump_msg(const u8 * buf, unsigned int length) +{ +} +#endif /* */ + +/** + * This function writes a packet into the Tx FIFO associated with the + * EP. For non-periodic EPs the non-periodic Tx FIFO is written. For + * periodic EPs the periodic Tx FIFO associated with the EP is written + * with all packets for the next micro-frame. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP to write packet for. + * @param _dma Indicates if DMA is being used. + */ +void dwc_otg_ep_write_packet(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep, + int _dma) +{ + /** + * The buffer is padded to DWORD on a per packet basis in + * slave/dma mode if the MPS is not DWORD aligned. The last + * packet, if short, is also padded to a multiple of DWORD. + * + * ep->xfer_buff always starts DWORD aligned in memory and is a + * multiple of DWORD in length + * + * ep->xfer_len can be any number of bytes + * + * ep->xfer_count is a multiple of ep->maxpacket until the last + * packet + * + * FIFO access is DWORD */ +#ifndef CONFIG_OTG_PLB_DMA + uint32_t i; +#endif + uint32_t byte_count; + uint32_t dword_count; + uint32_t * fifo; + uint32_t * data_buff = (uint32_t *) _ep->xfer_buff; +#if !defined( CONFIG_OTG_PLB_DMA_TASKLET) && defined(CONFIG_OTG_PLB_DMA) + uint32_t dma_sts = 0; +#endif + //DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, _core_if, _ep); + if (_ep->xfer_count >= _ep->xfer_len) { + DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s() No data for EP%d!!!\n", __func__, _ep->num); + return; + } + + /* Find the byte length of the packet either short packet or MPS */ + if ((_ep->xfer_len - _ep->xfer_count) < _ep->maxpacket) { + byte_count = _ep->xfer_len - _ep->xfer_count; + } else { + byte_count = _ep->maxpacket; + } + + /* Find the DWORD length, padded by extra bytes as neccessary if MPS + * is not a multiple of DWORD */ + dword_count = (byte_count + 3) / 4; + +#ifdef VERBOSE + dump_msg(_ep->xfer_buff, byte_count); +#endif /* */ + + /**@todo NGS Where are the Periodic Tx FIFO addresses + * intialized? What should this be? */ + fifo = _core_if->data_fifo[_ep->num]; + DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "fifo=%p buff=%p *p=%08x bc=%d\n", + fifo, data_buff, *data_buff, byte_count); + if (!_dma) { +#ifdef CONFIG_OTG_PLB_DMA +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + if (byte_count < USB_BUFSIZ) { + int i; + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_datafifo32(fifo, *data_buff); + } + } + else { + DWC_DEBUGPL(DBG_SP, "%s set release_later %d\n", __func__, dword_count); + atomic_set(& release_later, 1); + //disable_irq_nosync(94); + dwc_otg_disable_global_interrupts(_core_if); + + _core_if->dma_xfer.dma_data_buff = data_buff; + _core_if->dma_xfer.dma_data_fifo = fifo; + _core_if->dma_xfer.dma_count = dword_count; + _core_if->dma_xfer.dma_dir = OTG_TX_DMA; + tasklet_schedule(_core_if->plbdma_tasklet); + } +#else /* !CONFIG_OTG_PLB_DMA_TASKLET */ + ppc4xx_start_plb_dma(_core_if, data_buff, fifo, (dword_count * 4), + PLB_DMA_INT_DIS , PLB_DMA_CH, OTG_TX_DMA); + while (mfdcr(DCRN_DMACR0 + (DMA_CH0*8)) & DMA_CE_ENABLE) { + } + dma_sts = (uint32_t)ppc4xx_get_dma_status(); +#ifdef OTG_PLB_DMA_DBG + if (!(dma_sts & DMA_CS0)) { + printk("DMA Status (Terminal Count not occured) 0x%08x\n", mfdcr(DCRN_DMASR)); + } +#endif + if (dma_sts & DMA_CH0_ERR) { + printk("DMA Status (Channel 0 Error) 0x%08x\n", mfdcr(DCRN_DMASR)); + } + ppc4xx_clr_dma_status(PLB_DMA_CH); +#ifdef OTG_PLB_DMA_DBG + printk("%32s DMA Status =0x%08x\n", __FUNCTION__, mfdcr(DCRN_DMASR)); /* vj_dbg */ +#endif +#endif /* CONFIG_OTG_PLB_DMA_TASKLET */ + +#else /* DWC_SLAVE mode */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_datafifo32(fifo, *data_buff); + } +#endif + } + + _ep->xfer_count += byte_count; + _ep->xfer_buff += byte_count; + _ep->dma_addr += byte_count; +} + + +/** + * Set the EP STALL. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP to set the stall on. + */ +void dwc_otg_ep_set_stall(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + depctl_data_t depctl; + volatile uint32_t *depctl_addr; + DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, _ep->num, + (_ep->is_in ? "IN" : "OUT")); + if (_ep->is_in == 1) { + depctl_addr = &(_core_if->dev_if->in_ep_regs[_ep->num]->diepctl); + depctl.d32 = dwc_read_reg32(depctl_addr); + + /* set the disable and stall bits */ + if (depctl.b.epena) { + depctl.b.epdis = 1; + } + depctl.b.stall = 1; + dwc_write_reg32(depctl_addr, depctl.d32); + } else { + depctl_addr = &(_core_if->dev_if->out_ep_regs[_ep->num]->doepctl); + depctl.d32 = dwc_read_reg32(depctl_addr); + + /* set the stall bit */ + depctl.b.stall = 1; + dwc_write_reg32(depctl_addr, depctl.d32); + } + DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", dwc_read_reg32(depctl_addr)); + return; +} + + +/** + * Clear the EP STALL. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _ep The EP to clear stall from. + */ +void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep) +{ + depctl_data_t depctl; + volatile uint32_t *depctl_addr; + DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, _ep->num, + (_ep->is_in ? "IN" : "OUT")); + if (_ep->is_in == 1) { + depctl_addr = &(_core_if->dev_if->in_ep_regs[_ep->num]->diepctl); + } else { + depctl_addr = &(_core_if->dev_if->out_ep_regs[_ep->num]->doepctl); + } + depctl.d32 = dwc_read_reg32(depctl_addr); + + /* clear the stall bits */ + depctl.b.stall = 0; + + /* + * USB Spec 9.4.5: For endpoints using data toggle, regardless + * of whether an endpoint has the Halt feature set, a + * ClearFeature(ENDPOINT_HALT) request always results in the + * data toggle being reinitialized to DATA0. + */ + if (_ep->type == DWC_OTG_EP_TYPE_INTR || + _ep->type == DWC_OTG_EP_TYPE_BULK) { + depctl.b.setd0pid = 1; /* DATA0 */ + } + dwc_write_reg32(depctl_addr, depctl.d32); + DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", dwc_read_reg32(depctl_addr)); + return; +} + + +/** + * This function reads a packet from the Rx FIFO into the destination + * buffer. To read SETUP data use dwc_otg_read_setup_packet. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _dest Destination buffer for the packet. + * @param _bytes Number of bytes to copy to the destination. + */ +void dwc_otg_read_packet(dwc_otg_core_if_t * _core_if, + uint8_t * _dest, uint16_t _bytes) +{ +#ifndef CONFIG_OTG_PLB_DMA + int i; +#endif + int word_count = (_bytes + 3) / 4; + volatile uint32_t *fifo = _core_if->data_fifo[0]; + uint32_t * data_buff = (uint32_t *) _dest; +#if !defined( CONFIG_OTG_PLB_DMA_TASKLET) && defined(CONFIG_OTG_PLB_DMA) + uint32_t dma_sts = 0; +#endif + + /** + * @todo Account for the case where _dest is not dword aligned. This + * requires reading data from the FIFO into a uint32_t temp buffer, + * then moving it into the data buffer. + */ + DWC_DEBUGPL((DBG_PCDV | DBG_CILV | DBG_SP), "%s(%p,%p,%d)\n", __func__, + _core_if, _dest, _bytes); +#ifdef CONFIG_OTG_PLB_DMA +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + if ( _bytes < USB_BUFSIZ) { + int i; + for (i = 0; i < word_count; i++, data_buff++) { + *data_buff = dwc_read_datafifo32(fifo); + } + } else { + DWC_DEBUGPL(DBG_SP, "%s set release_later %d\n", __func__, _bytes); + atomic_set(& release_later, 1); + //disable_irq_nosync(94); + dwc_otg_disable_global_interrupts(_core_if); + + /* plbdma tasklet */ + _core_if->dma_xfer.dma_data_buff = data_buff; + _core_if->dma_xfer.dma_data_fifo = (void *)fifo; + _core_if->dma_xfer.dma_count = word_count; + _core_if->dma_xfer.dma_dir = OTG_RX_DMA; + tasklet_schedule(_core_if->plbdma_tasklet); + } +#else /* !CONFIG_OTG_PLB_DMA_TASKLET */ + ppc4xx_start_plb_dma(_core_if,(void *)fifo,data_buff, (word_count * 4), + PLB_DMA_INT_DIS, PLB_DMA_CH, OTG_RX_DMA); + while (mfdcr(DCRN_DMACR0 + (DMA_CH0*8)) & DMA_CE_ENABLE) { + } + dma_sts = (uint32_t)ppc4xx_get_dma_status(); +#ifdef OTG_PLB_DMA_DBG + if (!(dma_sts & DMA_CS0)) { + printk("DMA Status (Terminal Count not occured) 0x%08x\n", mfdcr(DCRN_DMASR)); + } +#endif + if (dma_sts & DMA_CH0_ERR) { + printk("DMA Status (Channel 0 Error) 0x%08x\n", mfdcr(DCRN_DMASR)); + } + ppc4xx_clr_dma_status(PLB_DMA_CH); +#ifdef OTG_PLB_DMA_DBG + printk("%32s DMA Status =0x%08x\n", __FUNCTION__, mfdcr(DCRN_DMASR)); + printk(" Rxed buffer \n"); + for( i=0; i< _bytes; i++) { + printk(" 0x%02x",*(_dest +i)); + } + printk(" \n End of Rxed buffer \n"); +#endif +#endif /* CONFIG_OTG_PLB_DMA_TASKLET */ + +#else /* DWC_SLAVE mode */ + for (i = 0; i < word_count; i++, data_buff++) { + *data_buff = dwc_read_datafifo32(fifo); + } +#endif + return; +} + + +/** + * This functions reads the device registers and prints them + * + * @param _core_if Programming view of DWC_otg controller. + */ +void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * _core_if) +{ + int i; + volatile uint32_t *addr; + DWC_PRINT("Device Global Registers\n"); + addr = &_core_if->dev_if->dev_global_regs->dcfg; + DWC_PRINT("DCFG @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->dctl; + DWC_PRINT("DCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->dsts; + DWC_PRINT("DSTS @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->diepmsk; + DWC_PRINT("DIEPMSK @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->doepmsk; + DWC_PRINT("DOEPMSK @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->daint; + DWC_PRINT("DAINT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->dtknqr1; + DWC_PRINT("DTKNQR1 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + if (_core_if->hwcfg2.b.dev_token_q_depth > 6) { + addr = &_core_if->dev_if->dev_global_regs->dtknqr2; + DWC_PRINT("DTKNQR2 @0x%08X : 0x%08X\n", + (uint32_t) addr, dwc_read_reg32(addr)); + } + addr = &_core_if->dev_if->dev_global_regs->dvbusdis; + DWC_PRINT("DVBUSID @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->dev_global_regs->dvbuspulse; + DWC_PRINT("DVBUSPULSE @0x%08X : 0x%08X\n", + (uint32_t) addr, dwc_read_reg32(addr)); + if (_core_if->hwcfg2.b.dev_token_q_depth > 14) { + addr = &_core_if->dev_if->dev_global_regs->dtknqr3_dthrctl; + DWC_PRINT("DTKNQR3 @0x%08X : 0x%08X\n", + (uint32_t) addr, dwc_read_reg32(addr)); + } + if (_core_if->hwcfg2.b.dev_token_q_depth > 22) { + addr = &_core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk; + DWC_PRINT("DTKNQR4 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + } + for (i = 0; i <= _core_if->dev_if->num_in_eps; i++) { + DWC_PRINT("Device IN EP %d Registers\n", i); + addr = &_core_if->dev_if->in_ep_regs[i]->diepctl; + DWC_PRINT("DIEPCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->in_ep_regs[i]->diepint; + DWC_PRINT("DIEPINT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->in_ep_regs[i]->dieptsiz; + DWC_PRINT("DIETSIZ @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->in_ep_regs[i]->diepdma; + DWC_PRINT("DIEPDMA @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->in_ep_regs[i]->dtxfsts; + DWC_PRINT("DTXFSTS @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + } + for (i = 0; i <= _core_if->dev_if->num_out_eps; i++) { + DWC_PRINT("Device OUT EP %d Registers\n", i); + addr = &_core_if->dev_if->out_ep_regs[i]->doepctl; + DWC_PRINT("DOEPCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->out_ep_regs[i]->doepfn; + DWC_PRINT("DOEPFN @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->out_ep_regs[i]->doepint; + DWC_PRINT("DOEPINT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->out_ep_regs[i]->doeptsiz; + DWC_PRINT("DOETSIZ @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->dev_if->out_ep_regs[i]->doepdma; + DWC_PRINT("DOEPDMA @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + } + return; +} + + +/** + * This function reads the host registers and prints them + * + * @param _core_if Programming view of DWC_otg controller. + */ +void dwc_otg_dump_host_registers(dwc_otg_core_if_t * _core_if) +{ + int i; + volatile uint32_t *addr; + DWC_PRINT("Host Global Registers\n"); + addr = &_core_if->host_if->host_global_regs->hcfg; + DWC_PRINT("HCFG @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->host_global_regs->hfir; + DWC_PRINT("HFIR @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->host_global_regs->hfnum; + DWC_PRINT("HFNUM @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->host_global_regs->hptxsts; + DWC_PRINT("HPTXSTS @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->host_global_regs->haint; + DWC_PRINT("HAINT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->host_global_regs->haintmsk; + DWC_PRINT("HAINTMSK @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = _core_if->host_if->hprt0; + DWC_PRINT("HPRT0 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + for (i = 0; i < _core_if->core_params->host_channels; i++) { + DWC_PRINT("Host Channel %d Specific Registers\n", i); + addr = &_core_if->host_if->hc_regs[i]->hcchar; + DWC_PRINT("HCCHAR @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->hc_regs[i]->hcsplt; + DWC_PRINT("HCSPLT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->hc_regs[i]->hcint; + DWC_PRINT("HCINT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->hc_regs[i]->hcintmsk; + DWC_PRINT("HCINTMSK @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->hc_regs[i]->hctsiz; + DWC_PRINT("HCTSIZ @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->host_if->hc_regs[i]->hcdma; + DWC_PRINT("HCDMA @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + } + return; +} + + +/** + * This function reads the core global registers and prints them + * + * @param _core_if Programming view of DWC_otg controller. + */ +void dwc_otg_dump_global_registers(dwc_otg_core_if_t * _core_if) +{ + int i; + volatile uint32_t *addr; + DWC_PRINT("Core Global Registers"); + addr = &_core_if->core_global_regs->gotgctl; + DWC_PRINT("GOTGCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gotgint; + DWC_PRINT("GOTGINT @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gahbcfg; + DWC_PRINT("GAHBCFG @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gusbcfg; + DWC_PRINT("GUSBCFG @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->grstctl; + DWC_PRINT("GRSTCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gintsts; + DWC_PRINT("GINTSTS @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gintmsk; + DWC_PRINT("GINTMSK @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->grxstsr; + DWC_PRINT("GRXSTSR @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + + //addr=&_core_if->core_global_regs->grxstsp; + //DWC_PRINT("GRXSTSP @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->grxfsiz; + DWC_PRINT("GRXFSIZ @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gnptxfsiz; + DWC_PRINT("GNPTXFSIZ @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gnptxsts; + DWC_PRINT("GNPTXSTS @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gi2cctl; + DWC_PRINT("GI2CCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gpvndctl; + DWC_PRINT("GPVNDCTL @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->ggpio; + DWC_PRINT("GGPIO @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->guid; + DWC_PRINT("GUID @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->gsnpsid; + DWC_PRINT("GSNPSID @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->ghwcfg1; + DWC_PRINT("GHWCFG1 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->ghwcfg2; + DWC_PRINT("GHWCFG2 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->ghwcfg3; + DWC_PRINT("GHWCFG3 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->ghwcfg4; + DWC_PRINT("GHWCFG4 @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + addr = &_core_if->core_global_regs->hptxfsiz; + DWC_PRINT("HPTXFSIZ @0x%08X : 0x%08X\n", (uint32_t) addr, + dwc_read_reg32(addr)); + for (i = 0; i < _core_if->hwcfg4.b.num_dev_perio_in_ep; i++) { + addr = &_core_if->core_global_regs->dptxfsiz_dieptxf[i]; + DWC_PRINT("DPTXFSIZ[%d] @0x%08X : 0x%08X\n", i, + (uint32_t) addr, dwc_read_reg32(addr)); + } +} + + +/** + * Flush a Tx FIFO. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _num Tx FIFO to flush. + */ +extern void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * _core_if, + const int _num) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + volatile grstctl_t greset = {.d32 = 0 }; + int count = 0; + DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "Flush Tx FIFO %d\n", _num); + greset.b.txfflsh = 1; + greset.b.txfnum = _num; + dwc_write_reg32(&global_regs->grstctl, greset.d32); + + do { + greset.d32 = dwc_read_reg32(&global_regs->grstctl); + if (++count > 10000) { + DWC_WARN("%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n", + __func__, greset.d32, dwc_read_reg32(&global_regs->gnptxsts)); + break; + } + udelay(1); + } while (greset.b.txfflsh == 1); + /* Wait for 3 PHY Clocks */ + UDELAY(1); +} + + +/** + * Flush Rx FIFO. + * + * @param _core_if Programming view of DWC_otg controller. + */ +extern void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + volatile grstctl_t greset = {.d32 = 0 }; + int count = 0; + DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "%s\n", __func__); + + /* + * + */ + greset.b.rxfflsh = 1; + dwc_write_reg32(&global_regs->grstctl, greset.d32); + + do { + greset.d32 = dwc_read_reg32(&global_regs->grstctl); + if (++count > 10000) { + DWC_WARN("%s() HANG! GRSTCTL=%0x\n", __func__, greset.d32); + break; + } + udelay(1); + } while (greset.b.rxfflsh == 1); + + /* Wait for 3 PHY Clocks */ + UDELAY(1); +} + + +/** + * Do core a soft reset of the core. Be careful with this because it + * resets all the internal state machines of the core. + */ +void dwc_otg_core_reset(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + volatile grstctl_t greset = {.d32 = 0 }; + int count = 0; + DWC_DEBUGPL(DBG_CILV, "%s\n", __func__); + + /* Wait for AHB master IDLE state. */ + do { + UDELAY(10); + greset.d32 = dwc_read_reg32(&global_regs->grstctl); + if (++count > 100000) { + DWC_WARN("%s() HANG! AHB Idle GRSTCTL=%0x\n", __func__, greset.d32); + return; + } + } while (greset.b.ahbidle == 0); + + /* Core Soft Reset */ + count = 0; + greset.b.csftrst = 1; + dwc_write_reg32(&global_regs->grstctl, greset.d32); + + do { + greset.d32 = dwc_read_reg32(&global_regs->grstctl); + if (++count > 10000) { + DWC_WARN("%s() HANG! Soft Reset GRSTCTL=%0x\n", __func__, greset.d32); + break; + } + udelay(1); + } while (greset.b.csftrst == 1); + + /* Wait for 3 PHY Clocks */ + //DWC_PRINT("100ms\n"); + MDELAY(100); +} + + +/** + * Register HCD callbacks. The callbacks are used to start and stop + * the HCD for interrupt processing. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _cb the HCD callback structure. + * @param _p pointer to be passed to callback function (usb_hcd*). + */ +extern void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * _core_if, + dwc_otg_cil_callbacks_t * _cb, void *_p) +{ + _core_if->hcd_cb = _cb; + _cb->p = _p; +} + +/** + * Register PCD callbacks. The callbacks are used to start and stop + * the PCD for interrupt processing. + * + * @param _core_if Programming view of DWC_otg controller. + * @param _cb the PCD callback structure. + * @param _p pointer to be passed to callback function (pcd*). + */ +extern void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * _core_if, + dwc_otg_cil_callbacks_t * _cb, void *_p) +{ + _core_if->pcd_cb = _cb; + _cb->p = _p; +} + diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_cil.h b/drivers/usb/gadget/dwc_otg/dwc_otg_cil.h new file mode 100644 index 00000000000..adc0086e572 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_cil.h @@ -0,0 +1,991 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil.h $ + * $Revision: #12 $ + * $Date: 2007/02/08 $ + * $Change: 792294 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#if !defined(__DWC_CIL_H__) +#define __DWC_CIL_H__ + +#include "linux/dwc_otg_plat.h" +#include "dwc_otg_regs.h" +#ifdef CONFIG_DWC_DEBUG +#include "linux/timer.h" +#endif + +#ifdef CONFIG_OTG_PLB_DMA +#include "ppc4xx_dma.h" +#include <asm/cacheflush.h> +#include <linux/interrupt.h> +#include <asm/time.h> +#include <asm/unaligned.h> + +#undef OTG_PLB_DMA_DBG +#define OTG_TX_DMA 0 /* TX DMA direction */ +#define OTG_RX_DMA 1 /* RX DMA direction */ +#define PLB_DMA_CH DMA_CH0 /* plb dma channel */ +#define PLB_DMA_CH_INT 12 +#define PLB_DMA_INT_ENA 1 +#define PLB_DMA_INT_DIS 0 +#define USB_BUFSIZ 512 + +#ifdef CONFIG_OTG_PLB_DMA_TASKLET +#ifndef CONFIG_OTG_PLB_DMA +#define CONFIG_OTG_PLB_DMA +#endif + +extern atomic_t release_later; +#endif +#endif + +/** + * @file + * This file contains the interface to the Core Interface Layer. + */ + +#ifdef CONFIG_405EZ +/* + * Added-sr: 2007-07-26 + * + * Since the 405EZ (Ultra) only support 2047 bytes as + * max transfer size, we have to split up bigger transfers + * into multiple transfers of 1024 bytes sized messages. + * I happens often, that transfers of 4096 bytes are + * required (zero-gadget, file_storage-gadget). + * + * MAX_XFER_LEN is set to 1024 right now, but could be 2047, + * since the xfer-size field in the 405EZ USB device controller + * implementation has 11 bits. Using 1024 seems to work for now. + */ +#define MAX_XFER_LEN 1024 +#endif + +/** + * The <code>dwc_ep</code> structure represents the state of a single + * endpoint when acting in device mode. It contains the data items + * needed for an endpoint to be activated and transfer packets. + */ +typedef struct dwc_ep { + /** EP number used for register address lookup */ + uint8_t num; + /** EP direction 0 = OUT */ + unsigned is_in : 1; + /** EP active. */ + unsigned active : 1; + + /** Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic Tx FIFO + If dedicated Tx FIFOs are enabled for all IN Eps - Tx FIFO # FOR IN EPs*/ + unsigned tx_fifo_num : 4; + /** EP type: 0 - Control, 1 - ISOC, 2 - BULK, 3 - INTR */ + unsigned type : 2; +#define DWC_OTG_EP_TYPE_CONTROL 0 +#define DWC_OTG_EP_TYPE_ISOC 1 +#define DWC_OTG_EP_TYPE_BULK 2 +#define DWC_OTG_EP_TYPE_INTR 3 + + /** DATA start PID for INTR and BULK EP */ + unsigned data_pid_start : 1; + /** Frame (even/odd) for ISOC EP */ + unsigned even_odd_frame : 1; + /** Max Packet bytes */ + unsigned maxpacket : 11; + + /** @name Transfer state */ + /** @{ */ + + /** + * Pointer to the beginning of the transfer buffer -- do not modify + * during transfer. + */ + + uint32_t dma_addr; + + uint8_t *start_xfer_buff; + /** pointer to the transfer buffer */ + uint8_t *xfer_buff; + /** Number of bytes to transfer */ + unsigned xfer_len : 19; + /** Number of bytes transferred. */ + unsigned xfer_count : 19; + /** Sent ZLP */ + unsigned sent_zlp : 1; + /** Total len for control transfer */ + unsigned total_len : 19; + + /** stall clear flag */ + unsigned stall_clear_flag : 1; + +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * Since the 405EZ (Ultra) only support 2047 bytes as + * max transfer size, we have to split up bigger transfers + * into multiple transfers of 1024 bytes sized messages. + * I happens often, that transfers of 4096 bytes are + * required (zero-gadget, file_storage-gadget). + * + * "bytes_pending" will hold the amount of bytes that are + * still pending to be send in further messages to complete + * the bigger transfer. + */ + u32 bytes_pending; +#endif + + /** @} */ +} dwc_ep_t; + +/* + * Reasons for halting a host channel. + */ +typedef enum dwc_otg_halt_status { + DWC_OTG_HC_XFER_NO_HALT_STATUS, + DWC_OTG_HC_XFER_COMPLETE, + DWC_OTG_HC_XFER_URB_COMPLETE, + DWC_OTG_HC_XFER_ACK, + DWC_OTG_HC_XFER_NAK, + DWC_OTG_HC_XFER_NYET, + DWC_OTG_HC_XFER_STALL, + DWC_OTG_HC_XFER_XACT_ERR, + DWC_OTG_HC_XFER_FRAME_OVERRUN, + DWC_OTG_HC_XFER_BABBLE_ERR, + DWC_OTG_HC_XFER_DATA_TOGGLE_ERR, + DWC_OTG_HC_XFER_AHB_ERR, + DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE, + DWC_OTG_HC_XFER_URB_DEQUEUE +} dwc_otg_halt_status_e; + +/** + * Host channel descriptor. This structure represents the state of a single + * host channel when acting in host mode. It contains the data items needed to + * transfer packets to an endpoint via a host channel. + */ +typedef struct dwc_hc { + /** Host channel number used for register address lookup */ + uint8_t hc_num; + + /** Device to access */ + unsigned dev_addr : 7; + + /** EP to access */ + unsigned ep_num : 4; + + /** EP direction. 0: OUT, 1: IN */ + unsigned ep_is_in : 1; + + /** + * EP speed. + * One of the following values: + * - DWC_OTG_EP_SPEED_LOW + * - DWC_OTG_EP_SPEED_FULL + * - DWC_OTG_EP_SPEED_HIGH + */ + unsigned speed : 2; +#define DWC_OTG_EP_SPEED_LOW 0 +#define DWC_OTG_EP_SPEED_FULL 1 +#define DWC_OTG_EP_SPEED_HIGH 2 + + /** + * Endpoint type. + * One of the following values: + * - DWC_OTG_EP_TYPE_CONTROL: 0 + * - DWC_OTG_EP_TYPE_ISOC: 1 + * - DWC_OTG_EP_TYPE_BULK: 2 + * - DWC_OTG_EP_TYPE_INTR: 3 + */ + unsigned ep_type : 2; + + /** Max packet size in bytes */ + unsigned max_packet : 11; + + /** + * PID for initial transaction. + * 0: DATA0,<br> + * 1: DATA2,<br> + * 2: DATA1,<br> + * 3: MDATA (non-Control EP), + * SETUP (Control EP) + */ + unsigned data_pid_start : 2; +#define DWC_OTG_HC_PID_DATA0 0 +#define DWC_OTG_HC_PID_DATA2 1 +#define DWC_OTG_HC_PID_DATA1 2 +#define DWC_OTG_HC_PID_MDATA 3 +#define DWC_OTG_HC_PID_SETUP 3 + + /** Number of periodic transactions per (micro)frame */ + unsigned multi_count: 2; + + /** @name Transfer State */ + /** @{ */ + + /** Pointer to the current transfer buffer position. */ + uint8_t *xfer_buff; + /** Total number of bytes to transfer. */ + uint32_t xfer_len; + /** Number of bytes transferred so far. */ + uint32_t xfer_count; + /** Packet count at start of transfer.*/ + uint16_t start_pkt_count; + + /** + * Flag to indicate whether the transfer has been started. Set to 1 if + * it has been started, 0 otherwise. + */ + uint8_t xfer_started; + + /** + * Set to 1 to indicate that a PING request should be issued on this + * channel. If 0, process normally. + */ + uint8_t do_ping; + + /** + * Set to 1 to indicate that the error count for this transaction is + * non-zero. Set to 0 if the error count is 0. + */ + uint8_t error_state; + + /** + * Set to 1 to indicate that this channel should be halted the next + * time a request is queued for the channel. This is necessary in + * slave mode if no request queue space is available when an attempt + * is made to halt the channel. + */ + uint8_t halt_on_queue; + + /** + * Set to 1 if the host channel has been halted, but the core is not + * finished flushing queued requests. Otherwise 0. + */ + uint8_t halt_pending; + + /** + * Reason for halting the host channel. + */ + dwc_otg_halt_status_e halt_status; + + /* + * Split settings for the host channel + */ + uint8_t do_split; /**< Enable split for the channel */ + uint8_t complete_split; /**< Enable complete split */ + uint8_t hub_addr; /**< Address of high speed hub */ + + uint8_t port_addr; /**< Port of the low/full speed device */ + /** Split transaction position + * One of the following values: + * - DWC_HCSPLIT_XACTPOS_MID + * - DWC_HCSPLIT_XACTPOS_BEGIN + * - DWC_HCSPLIT_XACTPOS_END + * - DWC_HCSPLIT_XACTPOS_ALL */ + uint8_t xact_pos; + + /** Set when the host channel does a short read. */ + uint8_t short_read; + + /** + * Number of requests issued for this channel since it was assigned to + * the current transfer (not counting PINGs). + */ + uint8_t requests; + + /** + * Queue Head for the transfer being processed by this channel. + */ + struct dwc_otg_qh *qh; + + /** @} */ + + /** Entry in list of host channels. */ + struct list_head hc_list_entry; +} dwc_hc_t; + +/** + * The following parameters may be specified when starting the module. These + * parameters define how the DWC_otg controller should be configured. + * Parameter values are passed to the CIL initialization function + * dwc_otg_cil_init. + */ +typedef struct dwc_otg_core_params +{ + int32_t opt; +#define dwc_param_opt_default 1 + + /** + * Specifies the OTG capabilities. The driver will automatically + * detect the value for this parameter if none is specified. + * 0 - HNP and SRP capable (default) + * 1 - SRP Only capable + * 2 - No HNP/SRP capable + */ + int32_t otg_cap; +#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0 +#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1 +#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2 +#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE + + /** + * Specifies whether to use slave or DMA mode for accessing the data + * FIFOs. The driver will automatically detect the value for this + * parameter if none is specified. + * 0 - Slave + * 1 - DMA (default, if available) + */ + int32_t dma_enable; +#define dwc_param_dma_enable_default 1 + + /** The DMA Burst size (applicable only for External DMA + * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32) + */ + int32_t dma_burst_size; /* Translate this to GAHBCFG values */ +#define dwc_param_dma_burst_size_default 32 + + /** + * Specifies the maximum speed of operation in host and device mode. + * The actual speed depends on the speed of the attached device and + * the value of phy_type. The actual speed depends on the speed of the + * attached device. + * 0 - High Speed (default) + * 1 - Full Speed + */ + int32_t speed; +#define dwc_param_speed_default 0 +#define DWC_SPEED_PARAM_HIGH 0 +#define DWC_SPEED_PARAM_FULL 1 + + /** Specifies whether low power mode is supported when attached + * to a Full Speed or Low Speed device in host mode. + * 0 - Don't support low power mode (default) + * 1 - Support low power mode + */ + int32_t host_support_fs_ls_low_power; +#define dwc_param_host_support_fs_ls_low_power_default 0 + + /** Specifies the PHY clock rate in low power mode when connected to a + * Low Speed device in host mode. This parameter is applicable only if + * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS + * then defaults to 6 MHZ otherwise 48 MHZ. + * + * 0 - 48 MHz + * 1 - 6 MHz + */ + int32_t host_ls_low_power_phy_clk; +#define dwc_param_host_ls_low_power_phy_clk_default 0 +#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0 +#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1 + + /** + * 0 - Use cC FIFO size parameters + * 1 - Allow dynamic FIFO sizing (default) + */ + int32_t enable_dynamic_fifo; +#define dwc_param_enable_dynamic_fifo_default 1 + + /** Total number of 4-byte words in the data FIFO memory. This + * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic + * Tx FIFOs. + * 32 to 32768 (default 8192) + * Note: The total FIFO memory depth in the FPGA configuration is 8192. + */ + int32_t data_fifo_size; +#define dwc_param_data_fifo_size_default 8192 + + /** Number of 4-byte words in the Rx FIFO in device mode when dynamic + * FIFO sizing is enabled. + * 16 to 32768 (default 1064) + */ + int32_t dev_rx_fifo_size; +#define dwc_param_dev_rx_fifo_size_default 1064 + + /** Number of 4-byte words in the non-periodic Tx FIFO in device mode + * when dynamic FIFO sizing is enabled. + * 16 to 32768 (default 1024) + */ + int32_t dev_nperio_tx_fifo_size; +#define dwc_param_dev_nperio_tx_fifo_size_default 1024 + + /** Number of 4-byte words in each of the periodic Tx FIFOs in device + * mode when dynamic FIFO sizing is enabled. + * 4 to 768 (default 256) + */ + uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS]; +#define dwc_param_dev_perio_tx_fifo_size_default 256 + + /** Number of 4-byte words in the Rx FIFO in host mode when dynamic + * FIFO sizing is enabled. + * 16 to 32768 (default 1024) + */ + int32_t host_rx_fifo_size; +#define dwc_param_host_rx_fifo_size_default 1024 + + /** Number of 4-byte words in the non-periodic Tx FIFO in host mode + * when Dynamic FIFO sizing is enabled in the core. + * 16 to 32768 (default 1024) + */ + int32_t host_nperio_tx_fifo_size; +#define dwc_param_host_nperio_tx_fifo_size_default 1024 + + /** Number of 4-byte words in the host periodic Tx FIFO when dynamic + * FIFO sizing is enabled. + * 16 to 32768 (default 1024) + */ + int32_t host_perio_tx_fifo_size; +#define dwc_param_host_perio_tx_fifo_size_default 1024 + + /** The maximum transfer size supported in bytes. + * 2047 to 65,535 (default 65,535) + */ + int32_t max_transfer_size; +#define dwc_param_max_transfer_size_default 65535 + + /** The maximum number of packets in a transfer. + * 15 to 511 (default 511) + */ + int32_t max_packet_count; +#define dwc_param_max_packet_count_default 511 + + /** The number of host channel registers to use. + * 1 to 16 (default 12) + * Note: The FPGA configuration supports a maximum of 12 host channels. + */ + int32_t host_channels; +#define dwc_param_host_channels_default 12 + + /** The number of endpoints in addition to EP0 available for device + * mode operations. + * 1 to 15 (default 6 IN and OUT) + * Note: The FPGA configuration supports a maximum of 6 IN and OUT + * endpoints in addition to EP0. + */ + int32_t dev_endpoints; +#define dwc_param_dev_endpoints_default 6 + + /** + * Specifies the type of PHY interface to use. By default, the driver + * will automatically detect the phy_type. + * + * 0 - Full Speed PHY + * 1 - UTMI+ (default) + * 2 - ULPI + */ + int32_t phy_type; +#define DWC_PHY_TYPE_PARAM_FS 0 +#define DWC_PHY_TYPE_PARAM_UTMI 1 +#define DWC_PHY_TYPE_PARAM_ULPI 2 +#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI + + /** + * Specifies the UTMI+ Data Width. This parameter is + * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI + * PHY_TYPE, this parameter indicates the data width between + * the MAC and the ULPI Wrapper.) Also, this parameter is + * applicable only if the OTG_HSPHY_WIDTH cC parameter was set + * to "8 and 16 bits", meaning that the core has been + * configured to work at either data path width. + * + * 8 or 16 bits (default 16) + */ + int32_t phy_utmi_width; +#define dwc_param_phy_utmi_width_default 16 + + /** + * Specifies whether the ULPI operates at double or single + * data rate. This parameter is only applicable if PHY_TYPE is + * ULPI. + * + * 0 - single data rate ULPI interface with 8 bit wide data + * bus (default) + * 1 - double data rate ULPI interface with 4 bit wide data + * bus + */ + int32_t phy_ulpi_ddr; +#define dwc_param_phy_ulpi_ddr_default 0 + + /** + * Specifies whether to use the internal or external supply to + * drive the vbus with a ULPI phy. + */ + int32_t phy_ulpi_ext_vbus; +#define DWC_PHY_ULPI_INTERNAL_VBUS 0 +#define DWC_PHY_ULPI_EXTERNAL_VBUS 1 +#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS + + /** + * Specifies whether to use the I2Cinterface for full speed PHY. This + * parameter is only applicable if PHY_TYPE is FS. + * 0 - No (default) + * 1 - Yes + */ + int32_t i2c_enable; +#define dwc_param_i2c_enable_default 0 + + int32_t ulpi_fs_ls; +#define dwc_param_ulpi_fs_ls_default 0 + + int32_t ts_dline; +#define dwc_param_ts_dline_default 0 + + /** + * Specifies whether dedicated transmit FIFOs are + * enabled for non periodic IN endpoints in device mode + * 0 - No + * 1 - Yes + */ + int32_t en_multiple_tx_fifo; +#define dwc_param_en_multiple_tx_fifo_default 1 + + /** Number of 4-byte words in each of the Tx FIFOs in device + * mode when dynamic FIFO sizing is enabled. + * 4 to 768 (default 256) + */ + uint32_t dev_tx_fifo_size[MAX_TX_FIFOS]; +#define dwc_param_dev_tx_fifo_size_default 256 + + /** Thresholding enable flag- + * bit 0 - enable non-ISO Tx thresholding + * bit 1 - enable ISO Tx thresholding + * bit 2 - enable Rx thresholding + */ + uint32_t thr_ctl; +#define dwc_param_thr_ctl_default 0 + + /** Thresholding length for Tx + * FIFOs in 32 bit DWORDs + */ + uint32_t tx_thr_length; +#define dwc_param_tx_thr_length_default 64 + + /** Thresholding length for Rx + * FIFOs in 32 bit DWORDs + */ + uint32_t rx_thr_length; +#define dwc_param_rx_thr_length_default 64 + +} dwc_otg_core_params_t; + +#ifdef CONFIG_DWC_DEBUG +struct dwc_otg_core_if; +typedef struct hc_xfer_info +{ + struct dwc_otg_core_if *core_if; + dwc_hc_t *hc; +} hc_xfer_info_t; +#endif + +#ifdef CONFIG_OTG_PLB_DMA_TASKLET +typedef struct dma_xfer_s +{ + uint32_t *dma_data_buff; + void *dma_data_fifo; + uint32_t dma_count; + uint32_t dma_dir; +} dma_xfer_t; +#endif + +/** + * The <code>dwc_otg_core_if</code> structure contains information needed to manage + * the DWC_otg controller acting in either host or device mode. It + * represents the programming view of the controller as a whole. + */ +typedef struct dwc_otg_core_if +{ + /** Parameters that define how the core should be configured.*/ + dwc_otg_core_params_t *core_params; + + /** Core Global registers starting at offset 000h. */ + dwc_otg_core_global_regs_t *core_global_regs; + + /** Device-specific information */ + dwc_otg_dev_if_t *dev_if; + /** Host-specific information */ + dwc_otg_host_if_t *host_if; + + /* + * Set to 1 if the core PHY interface bits in USBCFG have been + * initialized. + */ + uint8_t phy_init_done; + + /* + * SRP Success flag, set by srp success interrupt in FS I2C mode + */ + uint8_t srp_success; + uint8_t srp_timer_started; + + /* Common configuration information */ + /** Power and Clock Gating Control Register */ + volatile uint32_t *pcgcctl; +#define DWC_OTG_PCGCCTL_OFFSET 0xE00 + + /** Push/pop addresses for endpoints or host channels.*/ + uint32_t *data_fifo[MAX_EPS_CHANNELS]; +#define DWC_OTG_DATA_FIFO_OFFSET 0x1000 +#define DWC_OTG_DATA_FIFO_SIZE 0x1000 + + /** Total RAM for FIFOs (Bytes) */ + uint16_t total_fifo_size; + /** Size of Rx FIFO (Bytes) */ + uint16_t rx_fifo_size; + /** Size of Non-periodic Tx FIFO (Bytes) */ + uint16_t nperio_tx_fifo_size; + + + /** 1 if DMA is enabled, 0 otherwise. */ + uint8_t dma_enable; + + /** 1 if dedicated Tx FIFOs are enabled, 0 otherwise. */ + uint8_t en_multiple_tx_fifo; + + /** Set to 1 if multiple packets of a high-bandwidth transfer is in + * process of being queued */ + uint8_t queuing_high_bandwidth; + + /** Hardware Configuration -- stored here for convenience.*/ + hwcfg1_data_t hwcfg1; + hwcfg2_data_t hwcfg2; + hwcfg3_data_t hwcfg3; + hwcfg4_data_t hwcfg4; + + /** The operational State, during transations + * (a_host>>a_peripherial and b_device=>b_host) this may not + * match the core but allows the software to determine + * transitions. + */ + uint8_t op_state; + + /** + * Set to 1 if the HCD needs to be restarted on a session request + * interrupt. This is required if no connector ID status change has + * occurred since the HCD was last disconnected. + */ + uint8_t restart_hcd_on_session_req; + + /** HCD callbacks */ + /** A-Device is a_host */ +#define A_HOST (1) + /** A-Device is a_suspend */ +#define A_SUSPEND (2) + /** A-Device is a_peripherial */ +#define A_PERIPHERAL (3) + /** B-Device is operating as a Peripheral. */ +#define B_PERIPHERAL (4) + /** B-Device is operating as a Host. */ +#define B_HOST (5) + + /** HCD callbacks */ + struct dwc_otg_cil_callbacks *hcd_cb; + /** PCD callbacks */ + struct dwc_otg_cil_callbacks *pcd_cb; + + /** Device mode Periodic Tx FIFO Mask */ + uint32_t p_tx_msk; + /** Device mode Periodic Tx FIFO Mask */ + uint32_t tx_msk; + +#ifdef CONFIG_DWC_DEBUG + uint32_t start_hcchar_val[MAX_EPS_CHANNELS]; + + hc_xfer_info_t hc_xfer_info[MAX_EPS_CHANNELS]; + struct timer_list hc_xfer_timer[MAX_EPS_CHANNELS]; + + uint32_t hfnum_7_samples; + uint64_t hfnum_7_frrem_accum; + uint32_t hfnum_0_samples; + uint64_t hfnum_0_frrem_accum; + uint32_t hfnum_other_samples; + uint64_t hfnum_other_frrem_accum; +#endif + resource_size_t phys_addr; /* Added to support PLB DMA : phys-virt mapping */ +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + /* Tasket to do plbdma */ + struct tasklet_struct *plbdma_tasklet; +#if 1 + dma_xfer_t dma_xfer; +#else + uint32_t *dma_data_buff; + void *dma_data_fifo; + uint32_t dma_count; + uint32_t dma_dir; +#endif +#endif + + +} dwc_otg_core_if_t; + +/* + * The following functions support initialization of the CIL driver component + * and the DWC_otg controller. + */ +extern dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t *_reg_base_addr, + dwc_otg_core_params_t *_core_params); +extern void dwc_otg_cil_remove(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_core_init(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_core_host_init(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_core_dev_init(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_enable_global_interrupts( dwc_otg_core_if_t *_core_if ); +extern void dwc_otg_disable_global_interrupts( dwc_otg_core_if_t *_core_if ); + +/** @name Device CIL Functions + * The following functions support managing the DWC_otg controller in device + * mode. + */ +/**@{*/ +extern void dwc_otg_wakeup(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_read_setup_packet (dwc_otg_core_if_t *_core_if, uint32_t *_dest); +extern uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_ep0_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep_deactivate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep_write_packet(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep, int _dma); +extern void dwc_otg_ep_set_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_ep_clear_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep); +extern void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_dump_dev_registers(dwc_otg_core_if_t *_core_if); +/**@}*/ + +/** @name Host CIL Functions + * The following functions support managing the DWC_otg controller in host + * mode. + */ +/**@{*/ +extern void dwc_otg_hc_init(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc); +extern void dwc_otg_hc_halt(dwc_otg_core_if_t *_core_if, + dwc_hc_t *_hc, + dwc_otg_halt_status_e _halt_status); +extern void dwc_otg_hc_cleanup(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc); +extern void dwc_otg_hc_start_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc); +extern int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc); +extern void dwc_otg_hc_do_ping(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc); +extern void dwc_otg_hc_write_packet(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc); +extern void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t *_core_if); +extern void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t *_core_if); + +/** + * This function Reads HPRT0 in preparation to modify. It keeps the + * WC bits 0 so that if they are read as 1, they won't clear when you + * write it back + */ +static inline uint32_t dwc_otg_read_hprt0(dwc_otg_core_if_t *_core_if) +{ + hprt0_data_t hprt0; + hprt0.d32 = dwc_read_reg32(_core_if->host_if->hprt0); + hprt0.b.prtena = 0; + hprt0.b.prtconndet = 0; + hprt0.b.prtenchng = 0; + hprt0.b.prtovrcurrchng = 0; + return hprt0.d32; +} + +extern void dwc_otg_dump_host_registers(dwc_otg_core_if_t *_core_if); +/**@}*/ + +/** @name Common CIL Functions + * The following functions support managing the DWC_otg controller in either + * device or host mode. + */ +/**@{*/ + +extern void dwc_otg_read_packet(dwc_otg_core_if_t *core_if, + uint8_t *dest, + uint16_t bytes); + +extern void dwc_otg_dump_global_registers(dwc_otg_core_if_t *_core_if); + +extern void dwc_otg_flush_tx_fifo( dwc_otg_core_if_t *_core_if, + const int _num ); +extern void dwc_otg_flush_rx_fifo( dwc_otg_core_if_t *_core_if ); +extern void dwc_otg_core_reset( dwc_otg_core_if_t *_core_if ); + +#ifdef CONFIG_OTG_PLB_DMA +extern void ppc4xx_start_plb_dma(dwc_otg_core_if_t *_core_if, void *src, void *dst, + unsigned int length, unsigned int use_interrupt, unsigned int dma_ch, unsigned int dma_dir); +#endif +#define NP_TXFIFO_EMPTY -1 +#define MAX_NP_TXREQUEST_Q_SLOTS 8 +/** + * This function returns the endpoint number of the request at + * the top of non-periodic TX FIFO, or -1 if the request FIFO is + * empty. + */ +static inline int dwc_otg_top_nptxfifo_epnum(dwc_otg_core_if_t *_core_if) { + gnptxsts_data_t txstatus = {.d32 = 0}; + + txstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts); + return (txstatus.b.nptxqspcavail == MAX_NP_TXREQUEST_Q_SLOTS ? + -1 : txstatus.b.nptxqtop_chnep); +} + +/** + * This function returns the Core Interrupt register. + */ +static inline uint32_t dwc_otg_read_core_intr(dwc_otg_core_if_t *_core_if) +{ + return (dwc_read_reg32(&_core_if->core_global_regs->gintsts) & + dwc_read_reg32(&_core_if->core_global_regs->gintmsk)); +} + +/** + * This function returns the OTG Interrupt register. + */ +static inline uint32_t dwc_otg_read_otg_intr (dwc_otg_core_if_t *_core_if) +{ + return (dwc_read_reg32 (&_core_if->core_global_regs->gotgint)); +} + +/** + * This function reads the Device All Endpoints Interrupt register and + * returns the IN endpoint interrupt bits. + */ +static inline uint32_t dwc_otg_read_dev_all_in_ep_intr(dwc_otg_core_if_t *_core_if) +{ + uint32_t v; + v = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daint) & + dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk); + return (v & 0xffff); + +} + +/** + * This function reads the Device All Endpoints Interrupt register and + * returns the OUT endpoint interrupt bits. + */ +static inline uint32_t dwc_otg_read_dev_all_out_ep_intr(dwc_otg_core_if_t *_core_if) +{ + uint32_t v; + v = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daint) & + dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk); + return ((v & 0xffff0000) >> 16); +} + +/** + * This function returns the Device IN EP Interrupt register + */ +static inline uint32_t dwc_otg_read_dev_in_ep_intr(dwc_otg_core_if_t *_core_if, + dwc_ep_t *_ep) +{ + dwc_otg_dev_if_t *dev_if = _core_if->dev_if; + uint32_t v, msk, emp; + msk = dwc_read_reg32(&dev_if->dev_global_regs->diepmsk); + emp = dwc_read_reg32(&dev_if->dev_global_regs->dtknqr4_fifoemptymsk); + msk |= ((emp >> _ep->num) & 0x1) << 7; + v = dwc_read_reg32(&dev_if->in_ep_regs[_ep->num]->diepint) & msk; +/* + dwc_otg_dev_if_t *dev_if = _core_if->dev_if; + uint32_t v; + v = dwc_read_reg32(&dev_if->in_ep_regs[_ep->num]->diepint) & + dwc_read_reg32(&dev_if->dev_global_regs->diepmsk); +*/ + return v; +} +/** + * This function returns the Device OUT EP Interrupt register + */ +static inline uint32_t dwc_otg_read_dev_out_ep_intr(dwc_otg_core_if_t *_core_if, + dwc_ep_t *_ep) +{ + dwc_otg_dev_if_t *dev_if = _core_if->dev_if; + uint32_t v; + v = dwc_read_reg32( &dev_if->out_ep_regs[_ep->num]->doepint) & + dwc_read_reg32(&dev_if->dev_global_regs->doepmsk); + return v; +} + +/** + * This function returns the Host All Channel Interrupt register + */ +static inline uint32_t dwc_otg_read_host_all_channels_intr (dwc_otg_core_if_t *_core_if) +{ + return (dwc_read_reg32 (&_core_if->host_if->host_global_regs->haint)); +} + +static inline uint32_t dwc_otg_read_host_channel_intr (dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc) +{ + return (dwc_read_reg32 (&_core_if->host_if->hc_regs[_hc->hc_num]->hcint)); +} + + +/** + * This function returns the mode of the operation, host or device. + * + * @return 0 - Device Mode, 1 - Host Mode + */ +static inline uint32_t dwc_otg_mode(dwc_otg_core_if_t *_core_if) +{ + return (dwc_read_reg32( &_core_if->core_global_regs->gintsts ) & 0x1); +} + +static inline uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t *_core_if) +{ + return (dwc_otg_mode(_core_if) != DWC_HOST_MODE); +} +static inline uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t *_core_if) +{ + return (dwc_otg_mode(_core_if) == DWC_HOST_MODE); +} + +extern int32_t dwc_otg_handle_common_intr( dwc_otg_core_if_t *_core_if ); + + +/**@}*/ + +/** + * DWC_otg CIL callback structure. This structure allows the HCD and + * PCD to register functions used for starting and stopping the PCD + * and HCD for role change on for a DRD. + */ +typedef struct dwc_otg_cil_callbacks +{ + /** Start function for role change */ + int (*start) (void *_p); + /** Stop Function for role change */ + int (*stop) (void *_p); + /** Disconnect Function for role change */ + int (*disconnect) (void *_p); + /** Resume/Remote wakeup Function */ + int (*resume_wakeup) (void *_p); + /** Suspend function */ + int (*suspend) (void *_p); + /** Session Start (SRP) */ + int (*session_start) (void *_p); + /** Pointer passed to start() and stop() */ + void *p; +} dwc_otg_cil_callbacks_t; + +extern void dwc_otg_cil_register_pcd_callbacks( dwc_otg_core_if_t *_core_if, + dwc_otg_cil_callbacks_t *_cb, + void *_p); +extern void dwc_otg_cil_register_hcd_callbacks( dwc_otg_core_if_t *_core_if, + dwc_otg_cil_callbacks_t *_cb, + void *_p); +#endif diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_cil_intr.c b/drivers/usb/gadget/dwc_otg/dwc_otg_cil_intr.c new file mode 100644 index 00000000000..ab6db554e22 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_cil_intr.c @@ -0,0 +1,701 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil_intr.c $ + * $Revision: #7 $ + * $Date: 2005/11/02 $ + * $Change: 553126 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + + +/** @file + * + * The Core Interface Layer provides basic services for accessing and + * managing the DWC_otg hardware. These services are used by both the + * Host Controller Driver and the Peripheral Controller Driver. + * + * This file contains the Common Interrupt handlers. + */ +#include "linux/dwc_otg_plat.h" +#include "dwc_otg_regs.h" +#include "dwc_otg_cil.h" + +inline const char *op_state_str(dwc_otg_core_if_t * _core_if) +{ + return (_core_if->op_state == A_HOST ? "a_host" : + (_core_if->op_state == A_SUSPEND ? "a_suspend" : + (_core_if->op_state == A_PERIPHERAL ? "a_peripheral" : + (_core_if->op_state == B_PERIPHERAL ? "b_peripheral" : + (_core_if->op_state == B_HOST ? "b_host" : "unknown"))))); +} + +/** This function will log a debug message + * + * @param _core_if Programming view of DWC_otg controller. + */ +int32_t dwc_otg_handle_mode_mismatch_intr(dwc_otg_core_if_t * _core_if) +{ + gintsts_data_t gintsts; + DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n", + dwc_otg_mode(_core_if) ? "Host" : "Device"); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.modemismatch = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** Start the HCD. Helper function for using the HCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void hcd_start(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->hcd_cb && _core_if->hcd_cb->start) { + _core_if->hcd_cb->start(_core_if->hcd_cb->p); + } +} + +/** Stop the HCD. Helper function for using the HCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void hcd_stop(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->hcd_cb && _core_if->hcd_cb->stop) { + _core_if->hcd_cb->stop(_core_if->hcd_cb->p); + } +} + +/** Disconnect the HCD. Helper function for using the HCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void hcd_disconnect(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->hcd_cb && _core_if->hcd_cb->disconnect) { + _core_if->hcd_cb->disconnect(_core_if->hcd_cb->p); + } +} + +/** Inform the HCD the a New Session has begun. Helper function for + * using the HCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void hcd_session_start(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->hcd_cb && _core_if->hcd_cb->session_start) { + _core_if->hcd_cb->session_start(_core_if->hcd_cb->p); + } +} + +/** Start the PCD. Helper function for using the PCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void pcd_start(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->pcd_cb && _core_if->pcd_cb->start) { + _core_if->pcd_cb->start(_core_if->pcd_cb->p); + } +} + +/** Stop the PCD. Helper function for using the PCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void pcd_stop(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->pcd_cb && _core_if->pcd_cb->stop) { + _core_if->pcd_cb->stop(_core_if->pcd_cb->p); + } +} + +/** Suspend the PCD. Helper function for using the PCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void pcd_suspend(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->pcd_cb && _core_if->pcd_cb->suspend) { + _core_if->pcd_cb->suspend(_core_if->pcd_cb->p); + } +} + +/** Resume the PCD. Helper function for using the PCD callbacks. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static inline void pcd_resume(dwc_otg_core_if_t * _core_if) +{ + if (_core_if->pcd_cb && _core_if->pcd_cb->resume_wakeup) { + _core_if->pcd_cb->resume_wakeup(_core_if->pcd_cb->p); + } +} + +/** + * This function handles the OTG Interrupts. It reads the OTG + * Interrupt Register (GOTGINT) to determine what interrupt has + * occurred. + * + * @param _core_if Programming view of DWC_otg controller. + */ +int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + gotgint_data_t gotgint; + gotgctl_data_t gotgctl; + gintmsk_data_t gintmsk; + gotgint.d32 = dwc_read_reg32(&global_regs->gotgint); + gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); + DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32, + op_state_str(_core_if)); + + //DWC_DEBUGPL(DBG_CIL, "gotgctl=%08x\n", gotgctl.d32 ); + if (gotgint.b.sesenddet) { + DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " + "Session End Detected++ (%s)\n", + op_state_str(_core_if)); + gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); + if (_core_if->op_state == B_HOST) { + pcd_start(_core_if); + _core_if->op_state = B_PERIPHERAL; + } else { + /* If not B_HOST and Device HNP still set. HNP + * Did not succeed!*/ + if (gotgctl.b.devhnpen) { + DWC_DEBUGPL(DBG_ANY, "Session End Detected\n"); + DWC_ERROR("Device Not Connected/Responding!\n"); + } + /* If Session End Detected the B-Cable has + * been disconnected. */ + /* Reset PCD and Gadget driver to a + * clean state. */ + pcd_stop(_core_if); + } + gotgctl.d32 = 0; + gotgctl.b.devhnpen = 1; + dwc_modify_reg32(&global_regs->gotgctl, gotgctl.d32, 0); + } + if (gotgint.b.sesreqsucstschng) { + DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " + "Session Reqeust Success Status Change++\n"); + gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); + if (gotgctl.b.sesreqscs) { + if ((_core_if->core_params->phy_type == + DWC_PHY_TYPE_PARAM_FS) + && (_core_if->core_params->i2c_enable)) { + _core_if->srp_success = 1; + } else { + pcd_resume(_core_if); + + /* Clear Session Request */ + gotgctl.d32 = 0; + gotgctl.b.sesreq = 1; + dwc_modify_reg32(&global_regs->gotgctl, + gotgctl.d32, 0); + } + } + } + if (gotgint.b.hstnegsucstschng) { + /* Print statements during the HNP interrupt handling + * can cause it to fail.*/ + gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); + if (gotgctl.b.hstnegscs) { + if (dwc_otg_is_host_mode(_core_if)) { + _core_if->op_state = B_HOST; + + /* + * Need to disable SOF interrupt immediately. + * When switching from device to host, the PCD + * interrupt handler won't handle the + * interrupt if host mode is already set. The + * HCD interrupt handler won't get called if + * the HCD state is HALT. This means that the + * interrupt does not get handled and Linux + * complains loudly. + */ + gintmsk.d32 = 0; + gintmsk.b.sofintr = 1; + dwc_modify_reg32(&global_regs->gintmsk, gintmsk.d32, 0); + pcd_stop(_core_if); + + /* + * Initialize the Core for Host mode. + */ + hcd_start(_core_if); + _core_if->op_state = B_HOST; + } + } else { + gotgctl.d32 = 0; + gotgctl.b.hnpreq = 1; + gotgctl.b.devhnpen = 1; + dwc_modify_reg32(&global_regs->gotgctl, gotgctl.d32, 0); + DWC_DEBUGPL(DBG_ANY, "HNP Failed\n"); + DWC_ERROR("Device Not Connected/Responding\n"); + } + } + if (gotgint.b.hstnegdet) { + + /* The disconnect interrupt is set at the same time as + * Host Negotiation Detected. During the mode + * switch all interrupts are cleared so the disconnect + * interrupt handler will not get executed. + */ + DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " + "Host Negotiation Detected++ (%s)\n", + (dwc_otg_is_host_mode(_core_if) ? "Host" : + "Device")); + if (dwc_otg_is_device_mode(_core_if)) { + DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n", + _core_if->op_state); + hcd_disconnect(_core_if); + pcd_start(_core_if); + _core_if->op_state = A_PERIPHERAL; + } else { + + /* + * Need to disable SOF interrupt immediately. When + * switching from device to host, the PCD interrupt + * handler won't handle the interrupt if host mode is + * already set. The HCD interrupt handler won't get + * called if the HCD state is HALT. This means that + * the interrupt does not get handled and Linux + * complains loudly. + */ + gintmsk.d32 = 0; + gintmsk.b.sofintr = 1; + dwc_modify_reg32(&global_regs->gintmsk, gintmsk.d32, + 0); + pcd_stop(_core_if); + hcd_start(_core_if); + _core_if->op_state = A_HOST; + } + } + if (gotgint.b.adevtoutchng) { + DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " + "A-Device Timeout Change++\n"); + } + if (gotgint.b.debdone) { + DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " + "Debounce Done++\n"); + } + + /* Clear GOTGINT */ + dwc_write_reg32(&_core_if->core_global_regs->gotgint, gotgint.d32); + return 1; +} + +/** + * This function handles the Connector ID Status Change Interrupt. It + * reads the OTG Interrupt Register (GOTCTL) to determine whether this + * is a Device to Host Mode transition or a Host Mode to Device + * Transition. + * + * This only occurs when the cable is connected/removed from the PHY + * connector. + * + * @param _core_if Programming view of DWC_otg controller. + */ +int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t * + _core_if) +{ + uint32_t count = 0; + gintsts_data_t gintsts = {.d32 = 0}; + gintmsk_data_t gintmsk = {.d32 = 0}; + gotgctl_data_t gotgctl = {.d32 = 0}; + + /* + * Need to disable SOF interrupt immediately. If switching from device + * to host, the PCD interrupt handler won't handle the interrupt if + * host mode is already set. The HCD interrupt handler won't get + * called if the HCD state is HALT. This means that the interrupt does + * not get handled and Linux complains loudly. + */ + gintmsk.b.sofintr = 1; + dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, gintmsk.d32, 0); + DWC_DEBUGPL(DBG_CIL, + " ++Connector ID Status Change Interrupt++ (%s)\n", + (dwc_otg_is_host_mode(_core_if) ? "Host" : "Device")); + gotgctl.d32 = dwc_read_reg32(&_core_if->core_global_regs->gotgctl); + DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32); + DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts); + + /* B-Device connector (Device Mode) */ + if (gotgctl.b.conidsts) { + + /* Wait for switch to device mode. */ + while (!dwc_otg_is_device_mode(_core_if)) { + DWC_PRINT("Waiting for Peripheral Mode, Mode=%s\n", + (dwc_otg_is_host_mode(_core_if) ? "Host" : + "Peripheral")); + MDELAY(100); + if (++count > 10000) + *(uint32_t *) NULL = 0; + } + _core_if->op_state = B_PERIPHERAL; + dwc_otg_core_init(_core_if); + dwc_otg_enable_global_interrupts(_core_if); + pcd_start(_core_if); + } else { + + /* A-Device connector (Host Mode) */ + while (!dwc_otg_is_host_mode(_core_if)) { + DWC_PRINT("Waiting for Host Mode, Mode=%s\n", + (dwc_otg_is_host_mode(_core_if) ? "Host" : + "Peripheral")); + MDELAY(100); + if (++count > 10000) + *(uint32_t *) NULL = 0; + } + _core_if->op_state = A_HOST; + + /* + * Initialize the Core for Host mode. + */ + dwc_otg_core_init(_core_if); + dwc_otg_enable_global_interrupts(_core_if); + hcd_start(_core_if); + } + + /* Set flag and clear interrupt */ + gintsts.b.conidstschng = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that a device is initiating the Session + * Request Protocol to request the host to turn on bus power so a new + * session can begin. The handler responds by turning on bus power. If + * the DWC_otg controller is in low power mode, the handler brings the + * controller out of low power mode before turning on bus power. + * + * @param _core_if Programming view of DWC_otg controller. + */ +int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t * _core_if) +{ + gintsts_data_t gintsts; + +#ifndef CONFIG_DWC_HOST_ONLY + hprt0_data_t hprt0; + DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n"); + if (dwc_otg_is_device_mode(_core_if)) { + DWC_PRINT("SRP: Device mode\n"); + } else { + DWC_PRINT("SRP: Host mode\n"); + + /* Turn on the port power bit. */ + hprt0.d32 = dwc_otg_read_hprt0(_core_if); + hprt0.b.prtpwr = 1; + dwc_write_reg32(_core_if->host_if->hprt0, hprt0.d32); + + /* Start the Connection timer. So a message can be displayed + * if connect does not occur within 10 seconds. */ + hcd_session_start(_core_if); + } + +#endif /* */ + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.sessreqintr = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that the DWC_otg controller has detected a + * resume or remote wakeup sequence. If the DWC_otg controller is in + * low power mode, the handler must brings the controller out of low + * power mode. The controller automatically begins resume + * signaling. The handler schedules a time to stop resume signaling. + */ +int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t * _core_if) +{ + gintsts_data_t gintsts; + DWC_DEBUGPL(DBG_ANY,"++Resume and Remote Wakeup Detected Interrupt++\n"); + if (dwc_otg_is_device_mode(_core_if)) { + dctl_data_t dctl = {.d32 = 0}; + DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", + dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts)); + +#ifdef PARTIAL_POWER_DOWN + if (_core_if->hwcfg4.b.power_optimiz) { + pcgcctl_data_t power = {.d32 = 0}; + power.d32 = dwc_read_reg32(_core_if->pcgcctl); + DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n", power.d32); + power.b.stoppclk = 0; + dwc_write_reg32(_core_if->pcgcctl, power.d32); + power.b.pwrclmp = 0; + dwc_write_reg32(_core_if->pcgcctl, power.d32); + power.b.rstpdwnmodule = 0; + dwc_write_reg32(_core_if->pcgcctl, power.d32); + } + +#endif /* */ + /* Clear the Remote Wakeup Signalling */ + dctl.b.rmtwkupsig = 1; + dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->dctl, + dctl.d32, 0); + if (_core_if->pcd_cb && _core_if->pcd_cb->resume_wakeup) { + _core_if->pcd_cb->resume_wakeup(_core_if->pcd_cb->p); + } + } else { + + /* + * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms + * so that OPT tests pass with all PHYs). + */ + hprt0_data_t hprt0 = {.d32 = 0}; + pcgcctl_data_t pcgcctl = {.d32 = 0}; + + /* Restart the Phy Clock */ + pcgcctl.b.stoppclk = 1; + dwc_modify_reg32(_core_if->pcgcctl, pcgcctl.d32, 0); + UDELAY(10); + + /* Now wait for 70 ms. */ + hprt0.d32 = dwc_otg_read_hprt0(_core_if); + DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32); + MDELAY(70); + hprt0.b.prtres = 0; /* Resume */ + dwc_write_reg32(_core_if->host_if->hprt0, hprt0.d32); + DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n", + dwc_read_reg32(_core_if->host_if->hprt0)); + } + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.wkupintr = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that a device has been disconnected from + * the root port. + */ +int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t * _core_if) +{ + gintsts_data_t gintsts; + printk(KERN_ERR " Disconnect Detected Interrupt++ (%s) %s\n", + (dwc_otg_is_host_mode(_core_if) ? "Host" : "Device"), + op_state_str(_core_if)); + DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n", + (dwc_otg_is_host_mode(_core_if) ? "Host" : "Device"), + op_state_str(_core_if)); + +/** @todo Consolidate this if statement. */ +#ifndef CONFIG_DWC_HOST_ONLY + if (_core_if->op_state == B_HOST) { + + /* If in device mode Disconnect and stop the HCD, then + * start the PCD. */ + hcd_disconnect(_core_if); + pcd_start(_core_if); + _core_if->op_state = B_PERIPHERAL; + } else if (dwc_otg_is_device_mode(_core_if)) { + gotgctl_data_t gotgctl = {.d32 = 0}; + gotgctl.d32 = dwc_read_reg32(&_core_if->core_global_regs->gotgctl); + if (gotgctl.b.hstsethnpen == 1) { + /* Do nothing, if HNP in process the OTG + * interrupt "Host Negotiation Detected" + * interrupt will do the mode switch. + */ + } else if (gotgctl.b.devhnpen == 0) { + /* If in device mode Disconnect and stop the HCD, then + * start the PCD. */ + hcd_disconnect(_core_if); + pcd_start(_core_if); + _core_if->op_state = B_PERIPHERAL; + } else { + DWC_DEBUGPL(DBG_ANY, "!a_peripheral && !devhnpen\n"); + } + } else { + if (_core_if->op_state == A_HOST) { + /* A-Cable still connected but device disconnected. */ + hcd_disconnect(_core_if); + } + } + +#endif /* */ + gintsts.d32 = 0; + gintsts.b.disconnect = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that SUSPEND state has been detected on + * the USB. + * + * For HNP the USB Suspend interrupt signals the change from + * "a_peripheral" to "a_host". + * + * When power management is enabled the core will be put in low power + * mode. + */ +int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t * _core_if) +{ + dsts_data_t dsts; + gintsts_data_t gintsts; + DWC_DEBUGPL(DBG_ANY, "USB SUSPEND\n"); + if (dwc_otg_is_device_mode(_core_if)) { + + /* Check the Device status register to determine if the Suspend + * state is active. */ + dsts.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts); + DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32); + DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d " + "HWCFG4.power Optimize=%d\n", dsts.b.suspsts, + _core_if->hwcfg4.b.power_optimiz); + +#ifdef PARTIAL_POWER_DOWN +/** @todo Add a module parameter for power management. */ + if (dsts.b.suspsts && _core_if->hwcfg4.b.power_optimiz) { + pcgcctl_data_t power = {.d32 = 0}; + DWC_DEBUGPL(DBG_CIL, "suspend\n"); + power.b.pwrclmp = 1; + dwc_write_reg32(_core_if->pcgcctl, power.d32); + power.b.rstpdwnmodule = 1; + dwc_modify_reg32(_core_if->pcgcctl, 0, power.d32); + power.b.stoppclk = 1; + dwc_modify_reg32(_core_if->pcgcctl, 0, power.d32); + } else { + DWC_DEBUGPL(DBG_ANY, "disconnect?\n"); + } + +#endif /* */ + /* PCD callback for suspend. */ + pcd_suspend(_core_if); + } else { + if (_core_if->op_state == A_PERIPHERAL) { + DWC_DEBUGPL(DBG_ANY, "a_peripheral->a_host\n"); + + /* Clear the a_peripheral flag, back to a_host. */ + pcd_stop(_core_if); + hcd_start(_core_if); + _core_if->op_state = A_HOST; + } + } + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.usbsuspend = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This function returns the Core Interrupt register. + */ +static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t * _core_if) +{ + gintsts_data_t gintsts; + gintmsk_data_t gintmsk; + gintmsk_data_t gintmsk_common = {.d32 = 0}; + gintmsk_common.b.wkupintr = 1; + gintmsk_common.b.sessreqintr = 1; + gintmsk_common.b.conidstschng = 1; + gintmsk_common.b.otgintr = 1; + gintmsk_common.b.modemismatch = 1; + gintmsk_common.b.disconnect = 1; + gintmsk_common.b.usbsuspend = 1; + + /** @todo: The port interrupt occurs while in device + * mode. Added code to CIL to clear the interrupt for now! + */ + gintmsk_common.b.portintr = 1; + gintsts.d32 = dwc_read_reg32(&_core_if->core_global_regs->gintsts); + gintmsk.d32 = dwc_read_reg32(&_core_if->core_global_regs->gintmsk); + +#ifdef CONFIG_DWC_DEBUG + /* if any common interrupts set */ + if (gintsts.d32 & gintmsk_common.d32) { + DWC_DEBUGPL(DBG_ANY, "gintsts=%08x gintmsk=%08x\n", + gintsts.d32, gintmsk.d32); + } + +#endif /* */ + return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32); +} + +/** + * Common interrupt handler. + * + * The common interrupts are those that occur in both Host and Device mode. + * This handler handles the following interrupts: + * - Mode Mismatch Interrupt + * - Disconnect Interrupt + * - OTG Interrupt + * - Connector ID Status Change Interrupt + * - Session Request Interrupt. + * - Resume / Remote Wakeup Detected Interrupt. + * + */ +extern int32_t dwc_otg_handle_common_intr(dwc_otg_core_if_t * _core_if) +{ + int retval = 0; + gintsts_data_t gintsts; + gintsts.d32 = dwc_otg_read_common_intr(_core_if); + if (gintsts.b.modemismatch) { + retval |= dwc_otg_handle_mode_mismatch_intr(_core_if); + } + if (gintsts.b.otgintr) { + retval |= dwc_otg_handle_otg_intr(_core_if); + } + if (gintsts.b.conidstschng) { + retval |= dwc_otg_handle_conn_id_status_change_intr(_core_if); + } + if (gintsts.b.disconnect) { + retval |= dwc_otg_handle_disconnect_intr(_core_if); + } + if (gintsts.b.sessreqintr) { + retval |= dwc_otg_handle_session_req_intr(_core_if); + } + if (gintsts.b.wkupintr) { + retval |= dwc_otg_handle_wakeup_detected_intr(_core_if); + } + if (gintsts.b.usbsuspend) { + retval |= dwc_otg_handle_usb_suspend_intr(_core_if); + } + if (gintsts.b.portintr && dwc_otg_is_device_mode(_core_if)) { + /* The port interrupt occurs while in device mode with HPRT0 + * Port Enable/Disable. + */ + gintsts.d32 = 0; + gintsts.b.portintr = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, + gintsts.d32); + retval |= 1; + } + return retval; +} + diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_driver.c b/drivers/usb/gadget/dwc_otg/dwc_otg_driver.c new file mode 100644 index 00000000000..9896c76ed34 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_driver.c @@ -0,0 +1,1345 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.c $ + * $Revision: #12 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + + +/** @file + * The dwc_otg_driver module provides the initialization and cleanup entry + * points for the DWC_otg driver. This module will be dynamically installed + * after Linux is booted using the insmod command. When the module is + * installed, the dwc_otg_driver_init function is called. When the module is + * removed (using rmmod), the dwc_otg_driver_cleanup function is called. + * + * This module also defines a data structure for the dwc_otg_driver, which is + * used in conjunction with the standard device structure. These + * structures allow the OTG driver to comply with the standard Linux driver + * model in which devices and drivers are registered with a bus driver. This + * has the benefit that Linux can expose attributes of the driver and device + * in its special sysfs file system. Users can then read or write files in + * this file system to perform diagnostics on the driver components or the + * device. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/stat.h> /* permission constants */ +#include <linux/platform_device.h> +#include <linux/irq.h> +#include <asm/io.h> + +#include "linux/dwc_otg_plat.h" +#include "dwc_otg_attr.h" +#include "dwc_otg_driver.h" +#include "dwc_otg_cil.h" +#include "dwc_otg_pcd.h" +#include "dwc_otg_hcd.h" + +#define DWC_DRIVER_VERSION "2.60a 22-NOV-2006" +#define DWC_DRIVER_DESC "HS OTG USB Controller driver" +static const char dwc_driver_name[] = "dwc_otg"; + +/*-------------------------------------------------------------------------*/ +/* Encapsulate the module parameter settings */ +static dwc_otg_core_params_t dwc_otg_module_params = { + .opt = -1, + .otg_cap = -1, + .dma_enable = -1, + .dma_burst_size = -1, +#if 1 + .speed = -1, +#else + .speed = 1, /* test-only: set full-speed for Beagle USB Analyzer */ +#endif + .host_support_fs_ls_low_power = -1, + .host_ls_low_power_phy_clk = -1, + .enable_dynamic_fifo = -1, + .data_fifo_size = -1, + .dev_rx_fifo_size = -1, + .dev_nperio_tx_fifo_size = -1, + .dev_perio_tx_fifo_size = { /* dev_perio_tx_fifo_size_1 */ + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1 + }, /* 15 */ + .host_rx_fifo_size = -1, + .host_nperio_tx_fifo_size =-1, + .host_perio_tx_fifo_size = -1, + .max_transfer_size = -1, + .max_packet_count = -1, + .host_channels = -1, + .dev_endpoints = -1, + .phy_type = -1, + .phy_utmi_width = -1, + .phy_ulpi_ddr = -1, + .phy_ulpi_ext_vbus = -1, + .i2c_enable = -1, + .ulpi_fs_ls = -1, + .ts_dline = -1, + .en_multiple_tx_fifo = -1, + .dev_tx_fifo_size = { /* dev_tx_fifo_size */ + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 + }, /* 15 */ + .thr_ctl = -1, + .tx_thr_length = -1, + .rx_thr_length = -1, +}; + + +/** + * This function shows the Driver Version. + */ +static ssize_t version_show(struct device_driver *dev, char *buf) +{ + return snprintf(buf, sizeof(DWC_DRIVER_VERSION) + 2, "%s\n", + DWC_DRIVER_VERSION); +} +static DRIVER_ATTR(version, S_IRUGO, version_show, NULL); + +/** + * Global Debug Level Mask. + */ + uint32_t g_dbg_lvl = 0x0; /* OFF */ + +/** + * This function shows the driver Debug Level. + */ +static ssize_t dbg_level_show(struct device_driver *_drv, char *_buf) +{ + return sprintf(_buf, "0x%0x\n", g_dbg_lvl); +} + + +/** + * This function stores the driver Debug Level. + */ +static ssize_t dbg_level_store(struct device_driver *_drv, const char *_buf, + size_t _count) +{ + g_dbg_lvl = simple_strtoul(_buf, NULL, 16); + return _count; +} +static DRIVER_ATTR(debuglevel, S_IRUGO | S_IWUSR, dbg_level_show, + dbg_level_store); + +/** + * This function is called during module intialization to verify that + * the module parameters are in a valid state. + */ +static int check_parameters(dwc_otg_core_if_t * core_if) +{ + int i; + int retval = 0; + +/* Checks if the parameter is outside of its valid range of values */ +#define DWC_OTG_PARAM_TEST(_param_,_low_,_high_) \ + ((dwc_otg_module_params._param_ < (_low_)) || \ + (dwc_otg_module_params._param_ > (_high_))) +/* If the parameter has been set by the user, check that the parameter value is + * within the value range of values. If not, report a module error. */ +#define DWC_OTG_PARAM_ERR(_param_,_low_,_high_,_string_) \ +do { \ + if (dwc_otg_module_params._param_ != -1) { \ + if (DWC_OTG_PARAM_TEST(_param_, (_low_), (_high_))) { \ + DWC_ERROR("`%d' invalid for parameter `%s'\n", \ + dwc_otg_module_params._param_, _string_); \ + dwc_otg_module_params._param_ = dwc_param_##_param_##_default; \ + retval++; \ + } \ + } \ +} while (0) + + DWC_OTG_PARAM_ERR(opt, 0, 1, "opt"); + DWC_OTG_PARAM_ERR(otg_cap, 0, 2, "otg_cap"); + DWC_OTG_PARAM_ERR(dma_enable, 0, 1, "dma_enable"); + DWC_OTG_PARAM_ERR(speed, 0, 1, "speed"); + DWC_OTG_PARAM_ERR(host_support_fs_ls_low_power, 0, 1, + "host_support_fs_ls_low_power"); + DWC_OTG_PARAM_ERR(host_ls_low_power_phy_clk, 0, 1, + "host_ls_low_power_phy_clk"); + DWC_OTG_PARAM_ERR(enable_dynamic_fifo, 0, 1, "enable_dynamic_fifo"); + DWC_OTG_PARAM_ERR(data_fifo_size, 32, 32768, "data_fifo_size"); + DWC_OTG_PARAM_ERR(dev_rx_fifo_size, 16, 32768, "dev_rx_fifo_size"); + DWC_OTG_PARAM_ERR(dev_nperio_tx_fifo_size, 16, 32768, + "dev_nperio_tx_fifo_size"); + DWC_OTG_PARAM_ERR(host_rx_fifo_size, 16, 32768, "host_rx_fifo_size"); + DWC_OTG_PARAM_ERR(host_nperio_tx_fifo_size, 16, 32768, + "host_nperio_tx_fifo_size"); + DWC_OTG_PARAM_ERR(host_perio_tx_fifo_size, 16, 32768, + "host_perio_tx_fifo_size"); + DWC_OTG_PARAM_ERR(max_transfer_size, 2047, 524288, + "max_transfer_size"); + DWC_OTG_PARAM_ERR(max_packet_count, 15, 511, "max_packet_count"); + DWC_OTG_PARAM_ERR(host_channels, 1, 16, "host_channels"); + DWC_OTG_PARAM_ERR(dev_endpoints, 1, 15, "dev_endpoints"); + DWC_OTG_PARAM_ERR(phy_type, 0, 2, "phy_type"); + DWC_OTG_PARAM_ERR(phy_ulpi_ddr, 0, 1, "phy_ulpi_ddr"); + DWC_OTG_PARAM_ERR(phy_ulpi_ext_vbus, 0, 1, "phy_ulpi_ext_vbus"); + DWC_OTG_PARAM_ERR(i2c_enable, 0, 1, "i2c_enable"); + DWC_OTG_PARAM_ERR(ulpi_fs_ls, 0, 1, "ulpi_fs_ls"); + DWC_OTG_PARAM_ERR(ts_dline, 0, 1, "ts_dline"); + if (dwc_otg_module_params.dma_burst_size != -1) { + if (DWC_OTG_PARAM_TEST(dma_burst_size, 1, 1) + && DWC_OTG_PARAM_TEST(dma_burst_size, 4, 4) + && DWC_OTG_PARAM_TEST(dma_burst_size, 8, 8) + && DWC_OTG_PARAM_TEST(dma_burst_size, 16, 16) + && DWC_OTG_PARAM_TEST(dma_burst_size, 32, 32) + && DWC_OTG_PARAM_TEST(dma_burst_size, 64, 64) + && DWC_OTG_PARAM_TEST(dma_burst_size, 128, 128) + && DWC_OTG_PARAM_TEST(dma_burst_size, 256, 256)) { + DWC_ERROR + ("`%d' invalid for parameter `dma_burst_size'\n", + dwc_otg_module_params.dma_burst_size); + dwc_otg_module_params.dma_burst_size = 32; + retval++; + } + } + if (dwc_otg_module_params.phy_utmi_width != -1) { + if (DWC_OTG_PARAM_TEST(phy_utmi_width, 8, 8) + && DWC_OTG_PARAM_TEST(phy_utmi_width, 16, 16)) { + DWC_ERROR("`%d'invalid for parameter `phy_utmi_width'\n", + dwc_otg_module_params.phy_utmi_width); + dwc_otg_module_params.phy_utmi_width = 8; /*fscz 16*/ + retval++; + } + } + for (i = 0; i < 15; i++) { + /** @todo should be like above */ + //DWC_OTG_PARAM_ERR(dev_perio_tx_fifo_size[i],4,768,"dev_perio_tx_fifo_size"); + if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] != -1) { + if (DWC_OTG_PARAM_TEST + (dev_perio_tx_fifo_size[i], 4, 768)) { + DWC_ERROR("`%d' invalid for parameter `%s_%d'\n", + dwc_otg_module_params.dev_perio_tx_fifo_size[i], + "dev_perio_tx_fifo_size", i); + dwc_otg_module_params. + dev_perio_tx_fifo_size[i] = + dwc_param_dev_perio_tx_fifo_size_default; + retval++; + } + } + } + DWC_OTG_PARAM_ERR(en_multiple_tx_fifo, 0, 1, "en_multiple_tx_fifo"); + for (i = 0; i < 15; i++) { + /** @todo should be like above */ + //DWC_OTG_PARAM_ERR(dev_tx_fifo_size[i],4,768,"dev_tx_fifo_size"); + if (dwc_otg_module_params.dev_tx_fifo_size[i] != -1) { + if (DWC_OTG_PARAM_TEST(dev_tx_fifo_size[i], 4, 768)) { + DWC_ERROR("`%d' invalid for parameter `%s_%d'\n", + dwc_otg_module_params.dev_tx_fifo_size[i], + "dev_tx_fifo_size", i); + dwc_otg_module_params.dev_tx_fifo_size[i] = + dwc_param_dev_tx_fifo_size_default; + retval++; + } + } + } + DWC_OTG_PARAM_ERR(thr_ctl, 0, 7, "thr_ctl"); + DWC_OTG_PARAM_ERR(tx_thr_length, 8, 128, "tx_thr_length"); + DWC_OTG_PARAM_ERR(rx_thr_length, 8, 128, "rx_thr_length"); + + /* At this point, all module parameters that have been set by the user + * are valid, and those that have not are left unset. Now set their + * default values and/or check the parameters against the hardware + * configurations of the OTG core. */ + +/* This sets the parameter to the default value if it has not been set by the + * user */ +#define DWC_OTG_PARAM_SET_DEFAULT(_param_) \ +({ \ + int changed = 1; \ + if (dwc_otg_module_params._param_ == -1) { \ + changed = 0; \ + dwc_otg_module_params._param_ = dwc_param_##_param_##_default; \ + } \ + changed; \ +}) + +/* This checks the macro agains the hardware configuration to see if it is + * valid. It is possible that the default value could be invalid. In this + * case, it will report a module error if the user touched the parameter. + * Otherwise it will adjust the value without any error. */ +#define DWC_OTG_PARAM_CHECK_VALID(_param_,_str_,_is_valid_,_set_valid_) \ +( { \ + int changed = DWC_OTG_PARAM_SET_DEFAULT(_param_); \ + int error = 0; \ + if (!(_is_valid_)) { \ + if (changed) { \ + DWC_ERROR("`%d' invalid for parameter `%s' Check HW configuration.\n", \ + dwc_otg_module_params._param_, _str_); \ + error = 1; \ + } \ + dwc_otg_module_params._param_ = (_set_valid_); \ + } \ + error; \ +} ) + + /* OTG Cap */ + retval += DWC_OTG_PARAM_CHECK_VALID(otg_cap, "otg_cap", + ( { + int valid; + valid = 1; + switch(dwc_otg_module_params.otg_cap) { + case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE: + if (core_if->hwcfg2.b.op_mode != + DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) + valid = 0; + break; + case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE: + if((core_if->hwcfg2.b.op_mode != + DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) && + (core_if->hwcfg2.b.op_mode != + DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG) && + (core_if->hwcfg2.b.op_mode != + DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) && + (core_if->hwcfg2.b.op_mode != + DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) { + valid = 0; + } + break; + case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE: + /* always valid */ + break; + } + valid; + } ), + (((core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) || + (core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG) || + (core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) || + (core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) ? + DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE : + DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE)) ; + retval += DWC_OTG_PARAM_CHECK_VALID(dma_enable, "dma_enable", + ((dwc_otg_module_params.dma_enable == 1) && + (core_if->hwcfg2.b.architecture == 0)) ? 0 : 1, 0); + retval += DWC_OTG_PARAM_CHECK_VALID(opt, "opt", 1, 0); + DWC_OTG_PARAM_SET_DEFAULT(dma_burst_size); + retval += DWC_OTG_PARAM_CHECK_VALID(host_support_fs_ls_low_power, + "host_support_fs_ls_low_power", 1, 0); + retval += DWC_OTG_PARAM_CHECK_VALID(enable_dynamic_fifo, + "enable_dynamic_fifo", + ((dwc_otg_module_params.enable_dynamic_fifo == 0) || + (core_if->hwcfg2.b.dynamic_fifo == 1)), 0); + retval += DWC_OTG_PARAM_CHECK_VALID(data_fifo_size, "data_fifo_size", + (dwc_otg_module_params.data_fifo_size <= + core_if->hwcfg3.b.dfifo_depth), + core_if->hwcfg3.b.dfifo_depth); + retval += DWC_OTG_PARAM_CHECK_VALID(dev_rx_fifo_size, "dev_rx_fifo_size", + (dwc_otg_module_params.dev_rx_fifo_size <= + dwc_read_reg32(&core_if->core_global_regs->grxfsiz)), + dwc_read_reg32(&core_if->core_global_regs->grxfsiz)); + retval += DWC_OTG_PARAM_CHECK_VALID(dev_nperio_tx_fifo_size, + "dev_nperio_tx_fifo_size", + (dwc_otg_module_params.dev_nperio_tx_fifo_size <= + (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)), + (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)); + retval += DWC_OTG_PARAM_CHECK_VALID(host_rx_fifo_size, "host_rx_fifo_size", + (dwc_otg_module_params.host_rx_fifo_size <= + dwc_read_reg32(&core_if->core_global_regs->grxfsiz)), + dwc_read_reg32(&core_if->core_global_regs->grxfsiz)); + retval += DWC_OTG_PARAM_CHECK_VALID(host_nperio_tx_fifo_size, + "host_nperio_tx_fifo_size", + (dwc_otg_module_params.host_nperio_tx_fifo_size <= + (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)), + (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)); + retval += DWC_OTG_PARAM_CHECK_VALID(host_perio_tx_fifo_size, + "host_perio_tx_fifo_size", + (dwc_otg_module_params.host_perio_tx_fifo_size <= + ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz) >> 16))), + ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz) >> 16))); + retval += DWC_OTG_PARAM_CHECK_VALID(max_transfer_size, "max_transfer_size", + (dwc_otg_module_params.max_transfer_size < + (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))), + ((1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11)) - 1)); + retval += DWC_OTG_PARAM_CHECK_VALID(max_packet_count, "max_packet_count", + (dwc_otg_module_params.max_packet_count < + (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))), + ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4)) - 1)); + retval += DWC_OTG_PARAM_CHECK_VALID(host_channels, "host_channels", + (dwc_otg_module_params.host_channels <= + (core_if->hwcfg2.b.num_host_chan + 1)), + (core_if->hwcfg2.b.num_host_chan + 1)); + retval += DWC_OTG_PARAM_CHECK_VALID(dev_endpoints, "dev_endpoints", + (dwc_otg_module_params.dev_endpoints <= + (core_if->hwcfg2.b.num_dev_ep)), + core_if->hwcfg2.b.num_dev_ep); + +/* + * Define the following to disable the FS PHY Hardware checking. This is for + * internal testing only. + * + * #define NO_FS_PHY_HW_CHECKS + */ + +#ifdef NO_FS_PHY_HW_CHECKS + retval += DWC_OTG_PARAM_CHECK_VALID(phy_type, "phy_type", 1, 0); +#else /* */ + retval += DWC_OTG_PARAM_CHECK_VALID(phy_type, "phy_type", ( { + int valid = 0; + if ((dwc_otg_module_params.phy_type == + DWC_PHY_TYPE_PARAM_UTMI) && + ((core_if->hwcfg2.b.hs_phy_type == 1) || + (core_if->hwcfg2.b.hs_phy_type == 3))) { + valid = 1; + } + else if ((dwc_otg_module_params.phy_type == + DWC_PHY_TYPE_PARAM_ULPI) && + ((core_if->hwcfg2.b.hs_phy_type == 2) || + (core_if->hwcfg2.b.hs_phy_type == 3))) { + valid = 1; + } + else if ((dwc_otg_module_params.phy_type == + DWC_PHY_TYPE_PARAM_FS) && + (core_if->hwcfg2.b.fs_phy_type == 1)) { + valid = 1; + } + valid; + } ), + ( { + int set = DWC_PHY_TYPE_PARAM_FS; + if (core_if->hwcfg2.b.hs_phy_type) { + if ((core_if->hwcfg2.b.hs_phy_type == 3) || + (core_if->hwcfg2.b.hs_phy_type ==1)) { + set = DWC_PHY_TYPE_PARAM_UTMI; + } + else { + set = DWC_PHY_TYPE_PARAM_ULPI; + } + } + set; + } ) ) ; + +#endif /* */ + retval += DWC_OTG_PARAM_CHECK_VALID(speed, "speed", + (dwc_otg_module_params.speed == 0) && + (dwc_otg_module_params.phy_type == + DWC_PHY_TYPE_PARAM_FS) ? 0 : 1, + dwc_otg_module_params.phy_type == + DWC_PHY_TYPE_PARAM_FS ? 1 : 0); + retval += DWC_OTG_PARAM_CHECK_VALID(host_ls_low_power_phy_clk, + "host_ls_low_power_phy_clk", + ((dwc_otg_module_params.host_ls_low_power_phy_clk == + DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ) && + (dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? 0 : 1), + ((dwc_otg_module_params.phy_type == + DWC_PHY_TYPE_PARAM_FS) ? DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ : + DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ)); + DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ddr); + DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ext_vbus); + DWC_OTG_PARAM_SET_DEFAULT(phy_utmi_width); + DWC_OTG_PARAM_SET_DEFAULT(ulpi_fs_ls); + DWC_OTG_PARAM_SET_DEFAULT(ts_dline); + +#ifdef NO_FS_PHY_HW_CHECKS + retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable, "i2c_enable", 1, 0); + +#else /* */ + retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable, "i2c_enable", + (dwc_otg_module_params.i2c_enable == 1) && + (core_if->hwcfg3.b.i2c == 0) ? 0 : 1, 0); +#endif /* */ + for (i = 0; i < 16; i++) { + int changed = 1; + int error = 0; + if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] == -1) { + changed = 0; + dwc_otg_module_params.dev_perio_tx_fifo_size[i] = + dwc_param_dev_perio_tx_fifo_size_default; + } + if (!(dwc_otg_module_params.dev_perio_tx_fifo_size[i] <= + (dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i])))) { + if (changed) { + DWC_ERROR("`%d' invalid for parameter `dev_perio_fifo_size_%d'." + "Check HW configuration.\n", + dwc_otg_module_params.dev_perio_tx_fifo_size[i], i); + error = 1; + } + dwc_otg_module_params.dev_perio_tx_fifo_size[i] = + dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i]); + } + retval += error; + } + + retval += DWC_OTG_PARAM_CHECK_VALID(en_multiple_tx_fifo, + "en_multiple_tx_fifo", + ((dwc_otg_module_params.en_multiple_tx_fifo == 1) && + (core_if->hwcfg4.b.ded_fifo_en == 0)) ? 0 : 1, 0); + + for (i = 0; i < 16; i++) { + int changed = 1; + int error = 0; + if (dwc_otg_module_params.dev_tx_fifo_size[i] == -1) { + changed = 0; + dwc_otg_module_params.dev_tx_fifo_size[i] = + dwc_param_dev_tx_fifo_size_default; + } + if (!(dwc_otg_module_params.dev_tx_fifo_size[i] <= + (dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i])))) { + if (changed) { + DWC_ERROR("%d' invalid for parameter `dev_perio_fifo_size_%d'." + "Check HW configuration.\n",dwc_otg_module_params.dev_tx_fifo_size[i],i); + error = 1; + } + dwc_otg_module_params.dev_tx_fifo_size[i] = + dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i]); + } + retval += error; + } + DWC_OTG_PARAM_SET_DEFAULT(thr_ctl); + DWC_OTG_PARAM_SET_DEFAULT(tx_thr_length); + DWC_OTG_PARAM_SET_DEFAULT(rx_thr_length); + return retval; +} + +/** + * This function is the top level interrupt handler for the Common + * (Device and host modes) interrupts. + */ +static irqreturn_t dwc_otg_common_irq(int _irq, void *_dev) +{ + dwc_otg_device_t * otg_dev = _dev; + int32_t retval = IRQ_NONE; + retval = dwc_otg_handle_common_intr(otg_dev->core_if); + return IRQ_RETVAL(retval); +} + +#ifdef OTG_EXT_CHG_PUMP +/** + * This function is the interrupt handler for the OverCurrent condition + * from the external charge pump (if enabled) + */ +static irqreturn_t dwc_otg_externalchgpump_irq(int _irq, void *_dev) +{ + dwc_otg_device_t * otg_dev = _dev; + int32_t retval = IRQ_NONE; + dwc_otg_hcd_t *_dwc_otg_hcd = NULL; + + DWC_DEBUGPL(DBG_OFF," ++OTG OverCurrent Detected (ExtChgPump Interrupt)++ \n"); + +// mtdcr(0x0D2, mfdcr(0x0D2) & ~0x00000020); //Disable IRQ2 - 58 +// mtdcr(0x0C0, 0x00000002); + + if(dwc_otg_is_host_mode(otg_dev->core_if)) { + hprt0_data_t hprt0 = {.d32 = 0}; + _dwc_otg_hcd = otg_dev->hcd; + _dwc_otg_hcd->flags.b.port_over_current_change = 1; + + hprt0.b.prtpwr = 0; + dwc_write_reg32(_dwc_otg_hcd->core_if->host_if->hprt0, + hprt0.d32); + } else { + /* Device mode - This int is n/a for device mode */ + DWC_ERROR(" DeviceMode: OTG OverCurrent Detected \n"); + } + +// mtdcr(0x0D0, 0x00000020); //Clear the sts +// mtdcr(0x0D2, mfdcr(0x0D2) | 0x00000020); //Enable IRQ2 - 58 + + retval |= 1; //dwc_otg_handle_common_intr(otg_dev->core_if); + return IRQ_RETVAL(retval); +} +#endif + +/** + * This function is called when a device is unregistered with the + * dwc_otg_driver. This happens, for example, when the rmmod command is + * executed. The device may or may not be electrically present. If it is + * present, the driver stops device processing. Any resources used on behalf + * of this device are freed. + * + * @param[in] _dev + */ +static int dwc_otg_driver_remove(struct platform_device *pdev) +{ + dwc_otg_device_t * otg_dev = platform_get_drvdata(pdev); + DWC_DEBUGPL(DBG_ANY, "%s(%p)\n", __func__, _dev); + if (otg_dev == NULL) { + /* Memory allocation for the dwc_otg_device failed. */ + return 0; + } +/* + * Free the IRQ + */ + if (otg_dev->common_irq_installed) { + free_irq(otg_dev->irq, otg_dev); + } + +#ifndef CONFIG_DWC_DEVICE_ONLY + if (otg_dev->hcd != NULL) { + dwc_otg_hcd_remove(&pdev->dev); + } +#endif /* */ + +#ifndef CONFIG_DWC_HOST_ONLY + if (otg_dev->pcd != NULL) { + dwc_otg_pcd_remove(&pdev->dev); + } + +#endif /* */ + if (otg_dev->core_if != NULL) { + dwc_otg_cil_remove(otg_dev->core_if); + } + + /* + * Remove the device attributes + */ + dwc_otg_attr_remove(&pdev->dev); + + /* + * Return the memory. + */ + if (otg_dev->base != NULL) { + iounmap(otg_dev->base); + } + if (otg_dev->phys_addr != 0) { + release_mem_region(otg_dev->phys_addr, otg_dev->base_len); + } + kfree(otg_dev); + + /* + * Clear the drvdata pointer. + */ + platform_set_drvdata(pdev, 0); + return 0; +} + +#ifdef CONFIG_OTG_PLB_DMA_TASKLET +/** + * This function is the top level interrupt handler for the Common + * (Device and host modes) interrupts. + */ +static irqreturn_t dwc_otg_plbdma(int _irq, void *_dev) +{ + dwc_otg_device_t * otg_dev = _dev; + int32_t retval = IRQ_HANDLED; + + ppc4xx_clr_dma_status(0); + DWC_DEBUGPL(DBG_SP, "%s reset release_later\n", __func__); + atomic_set(& release_later, 0); + dwc_otg_enable_global_interrupts(otg_dev->core_if); + //enable_irq(94); + return IRQ_RETVAL(retval); +} +#endif + +/** + * This function is called when an device is bound to a + * dwc_otg_driver. It creates the driver components required to + * control the device (CIL, HCD, and PCD) and it initializes the + * device. The driver components are stored in a dwc_otg_device + * structure. A reference to the dwc_otg_device is saved in the + * device. This allows the driver to access the dwc_otg_device + * structure on subsequent calls to driver methods for this device. + * + * @param[in] _dev device definition + */ +static int dwc_otg_driver_probe(struct platform_device *pdev) +{ + int retval = 0; + dwc_otg_device_t * dwc_otg_device; + int32_t snpsid; + struct resource *res; + gusbcfg_data_t usbcfg = {.d32 = 0}; +#if defined(OTG_EXT_CHG_PUMP) || defined(CONFIG_OTG_PLB_DMA_TASKLET) + int irq; +#endif + + dev_dbg(&pdev->dev, "dwc_otg_driver_probe (%p)\n", pdev); + dwc_otg_device = kmalloc(sizeof(dwc_otg_device_t), GFP_KERNEL); + if (dwc_otg_device == 0) { + dev_err(&pdev->dev, "kmalloc of dwc_otg_device failed\n"); + retval = -ENOMEM; + goto fail; + } + memset(dwc_otg_device, 0, sizeof(*dwc_otg_device)); + dwc_otg_device->reg_offset = 0xFFFFFFFF; + + /* + * Retrieve the memory and IRQ resources. + */ + dwc_otg_device->irq = platform_get_irq(pdev, 0); + if (dwc_otg_device->irq == 0) { + dev_err(&pdev->dev, "no device irq\n"); + retval = -ENODEV; + goto fail; + } + dev_dbg(&pdev->dev, "OTG - device irq: %d\n", dwc_otg_device->irq); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res == NULL) { + dev_err(&pdev->dev, "no CSR address\n"); + retval = -ENODEV; + goto fail; + } + dev_dbg(&pdev->dev, "OTG - ioresource_mem start0x%08x: end:0x%08x\n", + (unsigned)res->start, (unsigned)res->end); + dwc_otg_device->phys_addr = res->start; + dwc_otg_device->base_len = res->end - res->start + 1; + if (request_mem_region(dwc_otg_device->phys_addr, dwc_otg_device->base_len, + dwc_driver_name) == NULL) { + dev_err(&pdev->dev, "request_mem_region failed\n"); + retval = -EBUSY; + goto fail; + } + + /* + * Map the DWC_otg Core memory into virtual address space. + */ + dwc_otg_device->base = + ioremap(dwc_otg_device->phys_addr, dwc_otg_device->base_len); + if (dwc_otg_device->base == NULL) { + dev_err(&pdev->dev, "ioremap64() failed\n"); + retval = -ENOMEM; + goto fail; + } + dev_dbg(&pdev->dev, "mapped base=0x%08x\n", (unsigned)dwc_otg_device->base); + + /* + * Attempt to ensure this device is really a DWC_otg Controller. + * Read and verify the SNPSID register contents. The value should be + * 0x45F42XXX, which corresponds to "OT2", as in "OTG version 2.XX". + */ + snpsid = dwc_read_reg32((uint32_t *) ((uint8_t *) dwc_otg_device->base + 0x40)); + /* + * Initialize driver data to point to the global DWC_otg + * Device structure. + */ + platform_set_drvdata(pdev, dwc_otg_device); + dev_dbg(&pdev->dev, "dwc_otg_device=0x%p\n", dwc_otg_device); + dwc_otg_device->core_if = dwc_otg_cil_init(dwc_otg_device->base, &dwc_otg_module_params); + if (dwc_otg_device->core_if == 0) { + dev_err(&pdev->dev, "CIL initialization failed!\n"); + retval = -ENOMEM; + goto fail; + } + /* + * Validate parameter values. + */ + if (check_parameters(dwc_otg_device->core_if) != 0) { + retval = -EINVAL; + goto fail; + } + + /* Added for PLB DMA phys virt mapping */ + dwc_otg_device->core_if->phys_addr = dwc_otg_device->phys_addr; + + /* + * Create Device Attributes in sysfs + */ + dwc_otg_attr_create(&pdev->dev); + /* + * Disable the global interrupt until all the interrupt + * handlers are installed. + */ + dwc_otg_disable_global_interrupts(dwc_otg_device->core_if); + + /* + * Install the interrupt handler for the common interrupts before + * enabling common interrupts in core_init below. + */ + DWC_DEBUGPL(DBG_CIL, "registering (common) handler for irq%d\n", + dwc_otg_device->irq); + retval = request_irq(dwc_otg_device->irq, dwc_otg_common_irq, IRQF_SHARED, + "dwc_otg", dwc_otg_device); + if (retval != 0) { + DWC_ERROR("request of irq%d failed retval: %d\n", dwc_otg_device->irq, retval); + retval = -EBUSY; + goto fail; + } else { + dwc_otg_device->common_irq_installed = 1; + } + +#ifdef CONFIG_MACH_IPMATE + set_irq_type(_lmdev->irq, IRQT_LOW); +#endif /* */ + /* + * Initialize the DWC_otg core. + */ + dwc_otg_core_init(dwc_otg_device->core_if); + +#ifdef OTG_EXT_CHG_PUMP + /* configure GPIO to use IRQ2, IRQ=58 (IRQ2) */ + irq = platform_get_irq(pdev, 1); + retval = request_irq(irq, dwc_otg_externalchgpump_irq, IRQF_SHARED, + "dwc_otg_ext_chg_pump", dwc_otg_device); + if (retval != 0) { + DWC_ERROR("request of irq:2(ExtInt) failed retval: %d\n", + retval); + retval = -EBUSY; + goto fail; + } else { + printk(KERN_INFO "%s: (ExtChgPump-OverCurrent Detection)" + " IRQ2 registered\n", dwc_driver_name); + } +#endif + +#ifndef CONFIG_DWC_HOST_ONLY + /* + * Initialize the PCD + */ + retval = dwc_otg_pcd_init(&pdev->dev); + + if (retval != 0) { + DWC_ERROR("dwc_otg_pcd_init failed\n"); + dwc_otg_device->pcd = NULL; + goto fail; + } + +#endif /* */ +#ifndef CONFIG_DWC_DEVICE_ONLY + /* + * Initialize the HCD + */ +#if 1 /*fscz*/ + /* force_host_mode */ + usbcfg.d32 = dwc_read_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg); + usbcfg.b.force_host_mode = 1; + dwc_write_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg, usbcfg.d32); +#endif + retval = dwc_otg_hcd_init(&pdev->dev, dwc_otg_device); + if (retval != 0) { + DWC_ERROR("dwc_otg_hcd_init failed\n"); + dwc_otg_device->hcd = NULL; + goto fail; + } + +#endif /* */ + /* + * Enable the global interrupt after all the interrupt + * handlers are installed. + */ + dwc_otg_enable_global_interrupts(dwc_otg_device->core_if); +#if 1 /*fscz*/ + usbcfg.d32 = dwc_read_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg); + usbcfg.b.force_host_mode = 0; + dwc_write_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg, usbcfg.d32); +#endif + +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + atomic_set(&release_later, 0); + irq = platform_get_irq(pdev, 2); + retval = request_irq(irq, dwc_otg_plbdma, IRQF_SHARED, + "dwc_otg_plbdma", dwc_otg_device); + if (retval != 0) { + DWC_ERROR("Request of irq %d failed retval: %d\n", PLB_DMA_CH_INT, retval); + retval = -EBUSY; + goto fail; + } else { + DWC_DEBUGPL(DBG_CIL, "%s Irq %d registered\n", dwc_driver_name, PLB_DMA_CH_INT); + } +#endif + return 0; + +fail: + dwc_otg_driver_remove(pdev); + return retval; +} + + +/** + * This structure defines the methods to be called by a bus driver + * during the lifecycle of a device on that bus. Both drivers and + * devices are registered with a bus driver. The bus driver matches + * devices to drivers based on information in the device and driver + * structures. + * + * The probe function is called when the bus driver matches a device + * to this driver. The remove function is called when a device is + * unregistered with the bus driver. + */ +static struct platform_driver dwc_otg_driver = { + .probe = dwc_otg_driver_probe, + .remove = __devexit_p(dwc_otg_driver_remove), + .driver = { + .name = (char *)dwc_driver_name, + .bus = &platform_bus_type, + }, +}; + +/** + * This function is called when the dwc_otg_driver is installed with the + * insmod command. It registers the dwc_otg_driver structure with the + * appropriate bus driver. This will cause the dwc_otg_driver_probe function + * to be called. In addition, the bus driver will automatically expose + * attributes defined for the device and driver in the special sysfs file + * system. + * + * @return + */ +static int __init dwc_otg_driver_init(void) +{ + int retval = 0, ret = 0; + printk(KERN_INFO "%s: version %s\n", dwc_driver_name, + DWC_DRIVER_VERSION); + retval = platform_driver_register(&dwc_otg_driver); + if (retval < 0) { + printk(KERN_ERR "%s registration failed. retval=%d\n", + dwc_driver_name, retval); + return retval; + } + ret = driver_create_file(&dwc_otg_driver.driver, &driver_attr_version); + ret = driver_create_file(&dwc_otg_driver.driver, &driver_attr_debuglevel); + return retval; +} + +module_init(dwc_otg_driver_init); + +/** + * This function is called when the driver is removed from the kernel + * with the rmmod command. The driver unregisters itself with its bus + * driver. + * + */ +static void __exit dwc_otg_driver_cleanup(void) +{ + printk(KERN_DEBUG "dwc_otg_driver_cleanup()\n"); + driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel); + driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version); + platform_driver_unregister(&dwc_otg_driver); + printk(KERN_INFO "%s module removed\n", dwc_driver_name); +} module_exit(dwc_otg_driver_cleanup); + +MODULE_DESCRIPTION(DWC_DRIVER_DESC); +MODULE_AUTHOR("Synopsys Inc."); +MODULE_LICENSE("GPL"); + +module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444); +MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None"); +module_param_named(opt, dwc_otg_module_params.opt, int, 0444); +MODULE_PARM_DESC(opt, "OPT Mode"); +module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444); +MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled"); +module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size, int,0444); +MODULE_PARM_DESC(dma_burst_size,"DMA Burst Size 1, 4, 8, 16, 32, 64, 128, 256"); +module_param_named(speed, dwc_otg_module_params.speed, int, 0444); +MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed"); +module_param_named(host_support_fs_ls_low_power, + dwc_otg_module_params.host_support_fs_ls_low_power, int,0444); +MODULE_PARM_DESC(host_support_fs_ls_low_power, + "Support Low Power w/FS or LS 0=Support 1=Don't Support"); +module_param_named(host_ls_low_power_phy_clk, + dwc_otg_module_params.host_ls_low_power_phy_clk, int, 0444); +MODULE_PARM_DESC(host_ls_low_power_phy_clk, + "Low Speed Low Power Clock 0=48Mhz 1=6Mhz"); +module_param_named(enable_dynamic_fifo, + dwc_otg_module_params.enable_dynamic_fifo, int, 0444); +MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing"); +module_param_named(data_fifo_size, + dwc_otg_module_params.data_fifo_size, int,0444); +MODULE_PARM_DESC(data_fifo_size, + "Total number of words in the data FIFO memory 32-32768"); +module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size, + int, 0444); +MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768"); +module_param_named(dev_nperio_tx_fifo_size, + dwc_otg_module_params.dev_nperio_tx_fifo_size, int, 0444); +MODULE_PARM_DESC(dev_nperio_tx_fifo_size, + "Number of words in the non-periodic Tx FIFO 16-32768"); +module_param_named(dev_perio_tx_fifo_size_1, + dwc_otg_module_params.dev_perio_tx_fifo_size[0], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_1, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_2, + dwc_otg_module_params.dev_perio_tx_fifo_size[1], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_2, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_3, + dwc_otg_module_params.dev_perio_tx_fifo_size[2], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_3, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_4, + dwc_otg_module_params.dev_perio_tx_fifo_size[3], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_4, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_5, + dwc_otg_module_params.dev_perio_tx_fifo_size[4], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_5, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_6, + dwc_otg_module_params.dev_perio_tx_fifo_size[5], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_6, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_7, + dwc_otg_module_params.dev_perio_tx_fifo_size[6], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_7, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_8, + dwc_otg_module_params.dev_perio_tx_fifo_size[7], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_8, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_9, + dwc_otg_module_params.dev_perio_tx_fifo_size[8], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_9, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_10, + dwc_otg_module_params.dev_perio_tx_fifo_size[9], int, 0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_10, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_11, + dwc_otg_module_params.dev_perio_tx_fifo_size[10], int,0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_11, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_12, + dwc_otg_module_params.dev_perio_tx_fifo_size[11], int,0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_12, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_13, + dwc_otg_module_params.dev_perio_tx_fifo_size[12], int,0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_13, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_14, + dwc_otg_module_params.dev_perio_tx_fifo_size[13], int,0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_14, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(dev_perio_tx_fifo_size_15, + dwc_otg_module_params.dev_perio_tx_fifo_size[14], int,0444); +MODULE_PARM_DESC(dev_perio_tx_fifo_size_15, + "Number of words in the periodic Tx FIFO 4-768"); +module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size, + int, 0444); +MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768"); +module_param_named(host_nperio_tx_fifo_size, + dwc_otg_module_params.host_nperio_tx_fifo_size, int, 0444); +MODULE_PARM_DESC(host_nperio_tx_fifo_size, + "Number of words in the non-periodic Tx FIFO 16-32768"); +module_param_named(host_perio_tx_fifo_size, + dwc_otg_module_params.host_perio_tx_fifo_size, int, 0444); +MODULE_PARM_DESC(host_perio_tx_fifo_size, + "Number of words in the host periodic Tx FIFO 16-32768"); +module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size, + int, 0444); + +/** @todo Set the max to 512K, modify checks */ +MODULE_PARM_DESC(max_transfer_size, + "The maximum transfer size supported in bytes 2047-65535"); +module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count, + int, 0444); +MODULE_PARM_DESC(max_packet_count, + "The maximum number of packets in a transfer 15-511"); +module_param_named(host_channels, dwc_otg_module_params.host_channels, int, 0444); +MODULE_PARM_DESC(host_channels, + "The number of host channel registers to use 1-16"); +module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints, int, 0444); +MODULE_PARM_DESC(dev_endpoints, + "The number of endpoints in addition to EP0 available for device mode 1-15"); +module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444); +MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI"); +module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width, int, + 0444); +MODULE_PARM_DESC(phy_utmi_width, + "Specifies the UTMI+ Data Width 8 or 16 bits"); +module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr, int, + 0444); +MODULE_PARM_DESC(phy_ulpi_ddr, +#if 1 /*fscz*/ + "0"); +#else + "ULPI at double or single data rate 0=Single 1=Double"); +#endif +module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus, + int, 0444); +MODULE_PARM_DESC(phy_ulpi_ext_vbus, + "ULPI PHY using internal or external vbus 0=Internal"); +module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444); +MODULE_PARM_DESC(i2c_enable, "FS PHY Interface"); +module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444); +MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only"); +module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444); +MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs"); +module_param_named(debug, g_dbg_lvl, int, 0444); +MODULE_PARM_DESC(debug, "0"); +module_param_named(en_multiple_tx_fifo, + dwc_otg_module_params.en_multiple_tx_fifo, int, 0444); +MODULE_PARM_DESC(en_multiple_tx_fifo, + "Dedicated Non Periodic Tx FIFOs 0=disabled 1=enabled"); +module_param_named(dev_tx_fifo_size_1, + dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_2, + dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_3, + dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_4, + dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_5, + dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_6, + dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_7, + dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_8, + dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_9, + dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_10, + dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_11, + dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_12, + dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_13, + dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_14, + dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768"); +module_param_named(dev_tx_fifo_size_15, + dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444); +MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768"); +module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444); +MODULE_PARM_DESC(thr_ctl, "Thresholding enable flag bit" + "0 - non ISO Tx thr., 1 - ISO Tx thr., 2 - Rx thr.- bit 0=disabled 1=enabled"); +module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length, int, 0444); +MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs"); +module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length, int, 0444); +MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs"); + +/** @page "Module Parameters" + * + * The following parameters may be specified when starting the module. + * These parameters define how the DWC_otg controller should be + * configured. Parameter values are passed to the CIL initialization + * function dwc_otg_cil_init + * + * Example: <code>modprobe dwc_otg speed=1 otg_cap=1</code> + * + + <table> + <tr><td>Parameter Name</td><td>Meaning</td></tr> + + <tr> + <td>otg_cap</td> + <td>Specifies the OTG capabilities. The driver will automatically detect the + value for this parameter if none is specified. + - 0: HNP and SRP capable (default, if available) + - 1: SRP Only capable + - 2: No HNP/SRP capable + </td></tr> + + <tr> + <td>dma_enable</td> + <td>Specifies whether to use slave or DMA mode for accessing the data FIFOs. + The driver will automatically detect the value for this parameter if none is + specified. + - 0: Slave + - 1: DMA (default, if available) + </td></tr> + + <tr> + <td>dma_burst_size</td> + <td>The DMA Burst size (applicable only for External DMA Mode). + - Values: 1, 4, 8 16, 32, 64, 128, 256 (default 32) + </td></tr> + + <tr> + <td>speed</td> + <td>Specifies the maximum speed of operation in host and device mode. The + actual speed depends on the speed of the attached device and the value of + phy_type. + - 0: High Speed (default) + - 1: Full Speed + </td></tr> + + <tr> + <td>host_support_fs_ls_low_power</td> + <td>Specifies whether low power mode is supported when attached to a Full + Speed or Low Speed device in host mode. + - 0: Don't support low power mode (default) + - 1: Support low power mode + </td></tr> + + <tr> + <td>host_ls_low_power_phy_clk</td> + <td>Specifies the PHY clock rate in low power mode when connected to a Low + Speed device in host mode. This parameter is applicable only if + HOST_SUPPORT_FS_LS_LOW_POWER is enabled. + - 0: 48 MHz (default) + - 1: 6 MHz + </td></tr> + + <tr> + <td>enable_dynamic_fifo</td> + <td> Specifies whether FIFOs may be resized by the driver software. + - 0: Use cC FIFO size parameters + - 1: Allow dynamic FIFO sizing (default) + </td></tr> + + <tr> + <td>data_fifo_size</td> + <td>Total number of 4-byte words in the data FIFO memory. This memory + includes the Rx FIFO, non-periodic Tx FIFO, and periodic Tx FIFOs. + - Values: 32 to 32768 (default 8192) + + Note: The total FIFO memory depth in the FPGA configuration is 8192. + </td></tr> + + <tr> + <td>dev_rx_fifo_size</td> + <td>Number of 4-byte words in the Rx FIFO in device mode when dynamic + FIFO sizing is enabled. + - Values: 16 to 32768 (default 1064) + </td></tr> + + <tr> + <td>dev_nperio_tx_fifo_size</td> + <td>Number of 4-byte words in the non-periodic Tx FIFO in device mode when + dynamic FIFO sizing is enabled. + - Values: 16 to 32768 (default 1024) + </td></tr> + + <tr> + <td>dev_perio_tx_fifo_size_n (n = 1 to 15)</td> + <td>Number of 4-byte words in each of the periodic Tx FIFOs in device mode + when dynamic FIFO sizing is enabled. + - Values: 4 to 768 (default 256) + </td></tr> + + <tr> + <td>host_rx_fifo_size</td> + <td>Number of 4-byte words in the Rx FIFO in host mode when dynamic FIFO + sizing is enabled. + - Values: 16 to 32768 (default 1024) + </td></tr> + + <tr> + <td>host_nperio_tx_fifo_size</td> + <td>Number of 4-byte words in the non-periodic Tx FIFO in host mode when + dynamic FIFO sizing is enabled in the core. + - Values: 16 to 32768 (default 1024) + </td></tr> + + <tr> + <td>host_perio_tx_fifo_size</td> + <td>Number of 4-byte words in the host periodic Tx FIFO when dynamic FIFO + sizing is enabled. + - Values: 16 to 32768 (default 1024) + </td></tr> + + <tr> + <td>max_transfer_size</td> + <td>The maximum transfer size supported in bytes. + - Values: 2047 to 65,535 (default 65,535) + </td></tr> + + <tr> + <td>max_packet_count</td> + <td>The maximum number of packets in a transfer. + - Values: 15 to 511 (default 511) + </td></tr> + + <tr> + <td>host_channels</td> + <td>The number of host channel registers to use. + - Values: 1 to 16 (default 12) + + Note: The FPGA configuration supports a maximum of 12 host channels. + </td></tr> + + <tr> + <td>dev_endpoints</td> + <td>The number of endpoints in addition to EP0 available for device mode + operations. + - Values: 1 to 15 (default 6 IN and OUT) + + Note: The FPGA configuration supports a maximum of 6 IN and OUT endpoints in + addition to EP0. + </td></tr> + + <tr> + <td>phy_type</td> + <td>Specifies the type of PHY interface to use. By default, the driver will + automatically detect the phy_type. + - 0: Full Speed + - 1: UTMI+ (default, if available) + - 2: ULPI + </td></tr> + + <tr> + <td>phy_utmi_width</td> + <td>Specifies the UTMI+ Data Width. This parameter is applicable for a + phy_type of UTMI+. Also, this parameter is applicable only if the + OTG_HSPHY_WIDTH cC parameter was set to "8 and 16 bits", meaning that the + core has been configured to work at either data path width. + - Values: 8 or 16 bits (default 16) + </td></tr> + + <tr> + <td>phy_ulpi_ddr</td> + <td>Specifies whether the ULPI operates at double or single data rate. This + parameter is only applicable if phy_type is ULPI. + - 0: single data rate ULPI interface with 8 bit wide data bus (default) + - 1: double data rate ULPI interface with 4 bit wide data bus + </td></tr> + + <tr> + <td>i2c_enable</td> + <td>Specifies whether to use the I2C interface for full speed PHY. This + parameter is only applicable if PHY_TYPE is FS. + - 0: Disabled (default) + - 1: Enabled + </td></tr> + + <tr> + <td>otg_en_multiple_tx_fifo</td> + <td>Specifies whether dedicatedto tx fifos are enabled for non periodic IN EPs. + The driver will automatically detect the value for this parameter if none is + specified. + - 0: Disabled + - 1: Enabled (default, if available) + </td></tr> + + <tr> + <td>dev_tx_fifo_size_n (n = 1 to 15)</td> + <td>Number of 4-byte words in each of the Tx FIFOs in device mode + when dynamic FIFO sizing is enabled. + - Values: 4 to 768 (default 256) + </td></tr> + +*/ + diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_driver.h b/drivers/usb/gadget/dwc_otg/dwc_otg_driver.h new file mode 100644 index 00000000000..e4ccd24accb --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_driver.h @@ -0,0 +1,82 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.h $ + * $Revision: #2 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#if !defined(__DWC_OTG_DRIVER_H__) +#define __DWC_OTG_DRIVER_H__ + +/** @file + * This file contains the interface to the Linux driver. + */ +#include "dwc_otg_cil.h" + +/* Type declarations */ +struct dwc_otg_pcd; +struct dwc_otg_hcd; + +/** + * This structure is a wrapper that encapsulates the driver components used to + * manage a single DWC_otg controller. + */ +typedef struct dwc_otg_device +{ + /** Base address returned from ioremap() */ + void *base; + + /** Pointer to the core interface structure. */ + dwc_otg_core_if_t *core_if; + + /** Register offset for Diagnostic API.*/ + uint32_t reg_offset; + + /** Pointer to the PCD structure. */ + struct dwc_otg_pcd *pcd; + + /** Pointer to the HCD structure. */ + struct dwc_otg_hcd *hcd; + + /** Flag to indicate whether the common IRQ handler is installed. */ + uint8_t common_irq_installed; + + /** Interrupt request number. */ + unsigned int irq; + + /** Physical address of Control and Status registers, used by + * release_mem_region(). + */ + resource_size_t phys_addr; + + /** Length of memory region, used by release_mem_region(). */ + unsigned long base_len; +} dwc_otg_device_t; + +#endif diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_hcd.c b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd.c new file mode 100644 index 00000000000..a813327bf40 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd.c @@ -0,0 +1,2900 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd.c $ + * $Revision: #16 $ + * $Date: 2006/12/05 $ + * $Change: 762293 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#ifndef DWC_DEVICE_ONLY + +/** + * @file + * + * This file contains the implementation of the HCD. In Linux, the HCD + * implements the hc_driver API. + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/string.h> +#include <linux/dma-mapping.h> + +#include "dwc_otg_driver.h" +#include "dwc_otg_hcd.h" +#include "dwc_otg_regs.h" +extern atomic_t release_later; + +static u64 dma_mask = DMA_BIT_MASK(32); + +static const char dwc_otg_hcd_name[] = "dwc_otg_hcd"; + +static int dwc_otg_hcd_suspend(struct usb_hcd *hcd) +{ + /* FIXME: Write code to right suspend processing */ + return 0; +} + +static int dwc_otg_hcd_resume(struct usb_hcd *hcd) +{ + /* FIXME: Write code to right resume processing */ + return 0; +} + +static const struct hc_driver dwc_otg_hc_driver = +{ + .description = dwc_otg_hcd_name, + .product_desc = "DWC OTG Controller", + .hcd_priv_size = sizeof(dwc_otg_hcd_t), + .irq = dwc_otg_hcd_irq, + .flags = HCD_MEMORY | HCD_USB2, + //.reset = + .start = dwc_otg_hcd_start, +#ifdef CONFIG_PM + .bus_suspend = dwc_otg_hcd_suspend, + .bus_resume = dwc_otg_hcd_resume, +#endif + .stop = dwc_otg_hcd_stop, + .urb_enqueue = dwc_otg_hcd_urb_enqueue, + .urb_dequeue = dwc_otg_hcd_urb_dequeue, + .endpoint_disable = dwc_otg_hcd_endpoint_disable, + .get_frame_number = dwc_otg_hcd_get_frame_number, + .hub_status_data = dwc_otg_hcd_hub_status_data, + .hub_control = dwc_otg_hcd_hub_control, + //.hub_suspend = + //.hub_resume = +}; + + +/** + * Work queue function for starting the HCD when A-Cable is connected. + * The dwc_otg_hcd_start() must be called in a process context. + */ +static void hcd_start_func(struct work_struct *work) +{ + struct dwc_otg_hcd *priv = + container_of(work, struct dwc_otg_hcd, start_work); + struct usb_hcd *usb_hcd = (struct usb_hcd *)priv->_p; + DWC_DEBUGPL(DBG_HCDV, "%s() %p\n", __func__, usb_hcd); + if (usb_hcd) { + dwc_otg_hcd_start(usb_hcd); + } +} + + +/** + * HCD Callback function for starting the HCD when A-Cable is + * connected. + * + * @param _p void pointer to the <code>struct usb_hcd</code> + */ +static int32_t dwc_otg_hcd_start_cb(void *_p) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_p); + dwc_otg_core_if_t * core_if = dwc_otg_hcd->core_if; + hprt0_data_t hprt0; + if (core_if->op_state == B_HOST) { + /* + * Reset the port. During a HNP mode switch the reset + * needs to occur within 1ms and have a duration of at + * least 50ms. + */ + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtrst = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + ((struct usb_hcd *)_p)->self.is_b_host = 1; + } else { + ((struct usb_hcd *)_p)->self.is_b_host = 0; + } + /* Need to start the HCD in a non-interrupt context. */ + INIT_WORK(&dwc_otg_hcd->start_work, hcd_start_func); + dwc_otg_hcd->_p = _p; + schedule_work(&dwc_otg_hcd->start_work); + return 1; +} + + +/** + * HCD Callback function for stopping the HCD. + * + * @param _p void pointer to the <code>struct usb_hcd</code> + */ +static int32_t dwc_otg_hcd_stop_cb(void *_p) +{ + struct usb_hcd *usb_hcd = (struct usb_hcd *)_p; + DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, _p); + dwc_otg_hcd_stop(usb_hcd); + return 1; +} +static void del_xfer_timers(dwc_otg_hcd_t * _hcd) +{ + +#ifdef DEBUG + int i; + int num_channels = _hcd->core_if->core_params->host_channels; + for (i = 0; i < num_channels; i++) { + del_timer(&_hcd->core_if->hc_xfer_timer[i]); + } + +#endif /* */ +} +static void del_timers(dwc_otg_hcd_t * _hcd) +{ + del_xfer_timers(_hcd); + del_timer(&_hcd->conn_timer); +} + +/** + * Processes all the URBs in a single list of QHs. Completes them with + * -ETIMEDOUT and frees the QTD. + */ +static void kill_urbs_in_qh_list(dwc_otg_hcd_t * _hcd, + struct list_head *_qh_list) +{ + struct list_head *qh_item; + dwc_otg_qh_t * qh; + struct list_head *qtd_item; + dwc_otg_qtd_t * qtd; + list_for_each(qh_item, _qh_list) { + qh = list_entry(qh_item, dwc_otg_qh_t, qh_list_entry); + for (qtd_item = qh->qtd_list.next; qtd_item != &qh->qtd_list; + qtd_item = qh->qtd_list.next) { + qtd = list_entry(qtd_item, dwc_otg_qtd_t, qtd_list_entry); + if (qtd->urb != NULL) { + dwc_otg_hcd_complete_urb(_hcd, qtd->urb,-ETIMEDOUT); + } + dwc_otg_hcd_qtd_remove_and_free(qtd); + } + } +} + +/** + * Responds with an error status of ETIMEDOUT to all URBs in the non-periodic + * and periodic schedules. The QTD associated with each URB is removed from + * the schedule and freed. This function may be called when a disconnect is + * detected or when the HCD is being stopped. + */ +static void kill_all_urbs(dwc_otg_hcd_t * _hcd) +{ + kill_urbs_in_qh_list(_hcd, &_hcd->non_periodic_sched_deferred); + kill_urbs_in_qh_list(_hcd, &_hcd->non_periodic_sched_inactive); + kill_urbs_in_qh_list(_hcd, &_hcd->non_periodic_sched_active); + kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_inactive); + kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_ready); + kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_assigned); + kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_queued); +} + +/** + * HCD Callback function for disconnect of the HCD. + * + * @param _p void pointer to the <code>struct usb_hcd</code> + */ +static int32_t dwc_otg_hcd_disconnect_cb(void *_p) +{ + gintsts_data_t intr; + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_p); + + //DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, _p); + + /* + * Set status flags for the hub driver. + */ + dwc_otg_hcd->flags.b.port_connect_status_change = 1; + dwc_otg_hcd->flags.b.port_connect_status = 0; + + /* + * Shutdown any transfers in process by clearing the Tx FIFO Empty + * interrupt mask and status bits and disabling subsequent host + * channel interrupts. + */ + intr.d32 = 0; + intr.b.nptxfempty = 1; + intr.b.ptxfempty = 1; + intr.b.hcintr = 1; + dwc_modify_reg32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, + intr.d32, 0); + dwc_modify_reg32(&dwc_otg_hcd->core_if->core_global_regs->gintsts, + intr.d32, 0); + del_timers(dwc_otg_hcd); + + /* + * Turn off the vbus power only if the core has transitioned to device + * mode. If still in host mode, need to keep power on to detect a + * reconnection. + */ + if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) { + if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) { + hprt0_data_t hprt0 = {.d32 = 0}; + DWC_PRINT("Disconnect: PortPower off\n"); + hprt0.b.prtpwr = 0; + dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, + hprt0.d32); + } + dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if); + } + + /* Respond with an error status to all URBs in the schedule. */ + kill_all_urbs(dwc_otg_hcd); + if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) { + /* Clean up any host channels that were in use. */ + int num_channels; + int i; + dwc_hc_t * channel; + dwc_otg_hc_regs_t * hc_regs; + hcchar_data_t hcchar; + num_channels = dwc_otg_hcd->core_if->core_params->host_channels; + if (!dwc_otg_hcd->core_if->dma_enable) { + /* Flush out any channel requests in slave mode. */ + for (i = 0; i < num_channels; i++) { + channel = dwc_otg_hcd->hc_ptr_array[i]; + if (list_empty(&channel->hc_list_entry)) { + hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[i]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (hcchar.b.chen) { + hcchar.b.chen = 0; + hcchar.b.chdis = 1; + hcchar.b.epdir = 0; + dwc_write_reg32(&hc_regs->hcchar,hcchar.d32); + } + } + } + } + for (i = 0; i < num_channels; i++) { + channel = dwc_otg_hcd->hc_ptr_array[i]; + if (list_empty(&channel->hc_list_entry)) { + hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[i]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (hcchar.b.chen) { + /* Halt the channel. */ + hcchar.b.chdis = 1; + dwc_write_reg32(&hc_regs->hcchar,hcchar.d32); + } + dwc_otg_hc_cleanup(dwc_otg_hcd->core_if,channel); + list_add_tail(&channel->hc_list_entry, + &dwc_otg_hcd->free_hc_list); + } + } + } + + /* A disconnect will end the session so the B-Device is no + * longer a B-host. */ + ((struct usb_hcd *)_p)->self.is_b_host = 0; + return 1; +} + +/** + * Connection timeout function. An OTG host is required to display a + * message if the device does not connect within 10 seconds. + */ +void dwc_otg_hcd_connect_timeout(unsigned long _ptr) +{ + DWC_DEBUGPL(DBG_HCDV, "%s(%x)\n", __func__, (int)_ptr); + DWC_PRINT("Connect Timeout\n"); + DWC_ERROR("Device Not Connected/Responding\n"); +} + +/** + * Start the connection timer. An OTG host is required to display a + * message if the device does not connect within 10 seconds. The + * timer is deleted if a port connect interrupt occurs before the + * timer expires. + */ +static void dwc_otg_hcd_start_connect_timer(dwc_otg_hcd_t * _hcd) +{ + init_timer(&_hcd->conn_timer); + _hcd->conn_timer.function = dwc_otg_hcd_connect_timeout; + _hcd->conn_timer.data = (unsigned long)0; + _hcd->conn_timer.expires = jiffies + (HZ * 10); + add_timer(&_hcd->conn_timer); +} + +/** + * HCD Callback function for disconnect of the HCD. + * + * @param _p void pointer to the <code>struct usb_hcd</code> + */ +static int32_t dwc_otg_hcd_session_start_cb(void *_p) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_p); + DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, _p); + dwc_otg_hcd_start_connect_timer(dwc_otg_hcd); + return 1; +} + + +/** + * HCD Callback structure for handling mode switching. + */ +static dwc_otg_cil_callbacks_t hcd_cil_callbacks = +{ + .start = dwc_otg_hcd_start_cb, + .stop = dwc_otg_hcd_stop_cb, + .disconnect = dwc_otg_hcd_disconnect_cb, + .session_start = dwc_otg_hcd_session_start_cb, + .p = 0, +}; + + +/** + * Reset tasklet function + */ +static void reset_tasklet_func(unsigned long data) +{ + dwc_otg_hcd_t * dwc_otg_hcd = (dwc_otg_hcd_t *) data; + dwc_otg_core_if_t * core_if = dwc_otg_hcd->core_if; + hprt0_data_t hprt0; + DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n"); + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtrst = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + mdelay(60); + hprt0.b.prtrst = 0; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + dwc_otg_hcd->flags.b.port_reset_change = 1; + return; +} +static struct tasklet_struct reset_tasklet = +{ + .next = NULL, + .state = 0, + .count = ATOMIC_INIT(0), + .func = reset_tasklet_func, + .data = 0, +}; + + +#ifdef OTG_PLB_DMA_TASKLET +/** + * plbdma tasklet function + */ +static void plbdma_tasklet_func(unsigned long data) +{ + unsigned long flags; + dwc_otg_core_if_t * _core_if = (dwc_otg_core_if_t *) data; + dma_xfer_t * dma_xfer = &_core_if->dma_xfer; + + local_irq_save(flags); + DWC_DEBUGPL(DBG_SP, "Plbdma tasklet called\n"); + + if (_core_if->dma_xfer.dma_dir == OTG_TX_DMA) { + if ((((unsigned long)dma_xfer->dma_data_buff) & 0x3) == 0) { + /* call tx_dma - src,dest,len,intr */ + ppc4xx_start_plb_dma(_core_if, (void *)dma_xfer->dma_data_buff, + dma_xfer->dma_data_fifo, (dma_xfer->dma_count * 4), PLB_DMA_INT_ENA, + PLB_DMA_CH, OTG_TX_DMA); + } else { + ppc4xx_start_plb_dma(_core_if, (void *)get_unaligned(dma_xfer->dma_data_buff), + dma_xfer->dma_data_fifo, (dma_xfer->dma_count * 4), PLB_DMA_INT_ENA, + PLB_DMA_CH, OTG_TX_DMA); + } + } + else { + DWC_DEBUGPL(DBG_HCD, "0x%p 0x%p %d\n", (void *)dma_xfer->dma_data_fifo, + dma_xfer->dma_data_buff, dma_xfer->dma_count ); + + ppc4xx_start_plb_dma(_core_if, (void *)dma_xfer->dma_data_fifo, + dma_xfer->dma_data_buff, (dma_xfer->dma_count * 4), PLB_DMA_INT_ENA, + PLB_DMA_CH, OTG_RX_DMA); + } + + local_irq_restore(flags); + return; +} +static struct tasklet_struct plbdma_tasklet = +{ + .next = NULL, + .state = 0, + .count = ATOMIC_INIT(0), + .func = plbdma_tasklet_func, + .data = 0, +}; + +#endif + +/** + * Initializes the HCD. This function allocates memory for and initializes the + * static parts of the usb_hcd and dwc_otg_hcd structures. It also registers the + * USB bus with the core and calls the hc_driver->start() function. It returns + * a negative error on failure. + */ +int __init dwc_otg_hcd_init(struct device *_dev, dwc_otg_device_t * dwc_otg_device) +{ + struct usb_hcd *hcd = NULL; + dwc_otg_hcd_t * dwc_otg_hcd = NULL; + dwc_otg_device_t * otg_dev = dev_get_drvdata(_dev); + int num_channels; + int i; + dwc_hc_t * channel; + int retval = 0; + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD INIT\n"); + /* + * Allocate memory for the base HCD plus the DWC OTG HCD. + * Initialize the base HCD. + */ + hcd = usb_create_hcd(&dwc_otg_hc_driver, _dev, dev_name(_dev)); + if (hcd == NULL) { + retval = -ENOMEM; + goto error1; + } + dev_set_drvdata(_dev, dwc_otg_device); /* fscz restore */ + hcd->regs = otg_dev->base; + hcd->self.otg_port = 1; + + /* Initialize the DWC OTG HCD. */ + dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd); + dwc_otg_hcd->core_if = otg_dev->core_if; + otg_dev->hcd = dwc_otg_hcd; + /* Register the HCD CIL Callbacks */ + dwc_otg_cil_register_hcd_callbacks(otg_dev->core_if, + &hcd_cil_callbacks, hcd); + + /* Initialize the non-periodic schedule. */ + INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_inactive); + INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_active); + INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_deferred); + + /* Initialize the periodic schedule. */ + INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_inactive); + INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_ready); + INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_assigned); + INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_queued); + + /* + * Create a host channel descriptor for each host channel implemented + * in the controller. Initialize the channel descriptor array. + */ + INIT_LIST_HEAD(&dwc_otg_hcd->free_hc_list); + num_channels = dwc_otg_hcd->core_if->core_params->host_channels; + for (i = 0; i < num_channels; i++) { + channel = kmalloc(sizeof(dwc_hc_t), GFP_KERNEL); + if (channel == NULL) { + retval = -ENOMEM; + DWC_ERROR("%s: host channel allocation failed\n",__func__); + goto error2; + } + memset(channel, 0, sizeof(dwc_hc_t)); + channel->hc_num = i; + dwc_otg_hcd->hc_ptr_array[i] = channel; + +#ifdef DEBUG + init_timer(&dwc_otg_hcd->core_if->hc_xfer_timer[i]); +#endif /* */ + DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i,channel); + } + + /* Initialize the Connection timeout timer. */ + init_timer(&dwc_otg_hcd->conn_timer); + + /* Initialize reset tasklet. */ + reset_tasklet.data = (unsigned long)dwc_otg_hcd; + dwc_otg_hcd->reset_tasklet = &reset_tasklet; + +#ifdef OTG_PLB_DMA_TASKLET + /* Initialize plbdma tasklet. */ + plbdma_tasklet.data = (unsigned long)dwc_otg_hcd->core_if; + dwc_otg_hcd->core_if->plbdma_tasklet = &plbdma_tasklet; +#endif + + /* Set device flags indicating whether the HCD supports DMA. */ + if (otg_dev->core_if->dma_enable) { + DWC_PRINT("Using DMA mode\n"); + _dev->dma_mask = &dma_mask; + _dev->coherent_dma_mask = DMA_BIT_MASK(32); + } else { + DWC_PRINT("Using Slave mode\n"); + _dev->dma_mask = (void *)0; + _dev->coherent_dma_mask = 0; + } + /* + * Finish generic HCD initialization and start the HCD. This function + * allocates the DMA buffer pool, registers the USB bus, requests the + * IRQ line, and calls dwc_otg_hcd_start method. + */ + retval = usb_add_hcd(hcd, otg_dev->irq, IRQF_SHARED); + if (retval < 0) { + goto error2; + } + /* + * Allocate space for storing data on status transactions. Normally no + * data is sent, but this space acts as a bit bucket. This must be + * done after usb_add_hcd since that function allocates the DMA buffer + * pool. + */ + if (otg_dev->core_if->dma_enable) { + dwc_otg_hcd->status_buf = + dma_alloc_coherent(_dev, DWC_OTG_HCD_STATUS_BUF_SIZE, + &dwc_otg_hcd->status_buf_dma, GFP_KERNEL | GFP_DMA); + } else { + dwc_otg_hcd->status_buf = kmalloc(DWC_OTG_HCD_STATUS_BUF_SIZE, GFP_KERNEL); + } + if (dwc_otg_hcd->status_buf == NULL) { + retval = -ENOMEM; + DWC_ERROR("%s: status_buf allocation failed\n", __func__); + goto error3; + } + DWC_DEBUGPL(DBG_HCD, + "DWC OTG HCD Initialized HCD, bus=%s, usbbus=%d\n", + _dev->bus_id, hcd->self.busnum); + return 0; + + /* Error conditions */ + error3:usb_remove_hcd(hcd); + error2:dwc_otg_hcd_free(hcd); + usb_put_hcd(hcd); + error1:return retval; +} + + +/** + * Removes the HCD. + * Frees memory and resources associated with the HCD and deregisters the bus. + */ +void dwc_otg_hcd_remove(struct device *_dev) +{ + dwc_otg_device_t * otg_dev = dev_get_drvdata(_dev); + dwc_otg_hcd_t * dwc_otg_hcd = otg_dev->hcd; + struct usb_hcd *hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd); + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD REMOVE\n"); + + /* Turn off all interrupts */ + dwc_write_reg32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0); + dwc_modify_reg32(&dwc_otg_hcd->core_if->core_global_regs->gahbcfg, 1,0); + usb_remove_hcd(hcd); + dwc_otg_hcd_free(hcd); + usb_put_hcd(hcd); + return; +} + + +/* ========================================================================= + * Linux HC Driver Functions + * ========================================================================= */ + +/** + * Initializes dynamic portions of the DWC_otg HCD state. + */ +static void hcd_reinit(dwc_otg_hcd_t * _hcd) +{ + struct list_head *item; + int num_channels; + int i; + dwc_hc_t * channel; + _hcd->flags.d32 = 0; + _hcd->non_periodic_qh_ptr = &_hcd->non_periodic_sched_active; + _hcd->non_periodic_channels = 0; + _hcd->periodic_channels = 0; + + /* + * Put all channels in the free channel list and clean up channel + * states. + */ + item = _hcd->free_hc_list.next; + while (item != &_hcd->free_hc_list) { + list_del(item); + item = _hcd->free_hc_list.next; + } + num_channels = _hcd->core_if->core_params->host_channels; + for (i = 0; i < num_channels; i++) { + channel = _hcd->hc_ptr_array[i]; + list_add_tail(&channel->hc_list_entry, &_hcd->free_hc_list); + dwc_otg_hc_cleanup(_hcd->core_if, channel); + } + + /* Initialize the DWC core for host mode operation. */ + dwc_otg_core_host_init(_hcd->core_if); +} + + +/** Initializes the DWC_otg controller and its root hub and prepares it for host + * mode operation. Activates the root port. Returns 0 on success and a negative + * error code on failure. */ +int dwc_otg_hcd_start(struct usb_hcd *_hcd) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + //dwc_otg_core_if_t * core_if = dwc_otg_hcd->core_if; + struct usb_device *udev; + struct usb_bus *bus; + +// int retval; + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD START\n"); + bus = hcd_to_bus(_hcd); + + /* Initialize the bus state. If the core is in Device Mode + * HALT the USB bus and return. */ + + _hcd->state = HC_STATE_RUNNING; + + /* Initialize and connect root hub if one is not already attached */ + if (bus->root_hub) { + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Has Root Hub\n"); + + /* Inform the HUB driver to resume. */ + usb_hcd_resume_root_hub(_hcd); + } + + else { + udev = usb_alloc_dev(NULL, bus, 0); + udev->speed = USB_SPEED_HIGH; + if (!udev) { + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error udev alloc\n"); + return -ENODEV; + } + + /* Not needed - VJ + if ((retval = usb_hcd_register_root_hub(udev, _hcd)) != 0) { + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error registering %d\n", retval); + return -ENODEV; + } + */ + } + hcd_reinit(dwc_otg_hcd); + return 0; +} +static void qh_list_free(dwc_otg_hcd_t * _hcd, struct list_head *_qh_list) +{ + struct list_head *item; + dwc_otg_qh_t * qh; + if (_qh_list->next == NULL) { + /* The list hasn't been initialized yet. */ + return; + } + + /* Ensure there are no QTDs or URBs left. */ + kill_urbs_in_qh_list(_hcd, _qh_list); + for (item = _qh_list->next; item != _qh_list; item = _qh_list->next) { + qh = list_entry(item, dwc_otg_qh_t, qh_list_entry); + dwc_otg_hcd_qh_remove_and_free(_hcd, qh); + } +} + + +/** + * Halts the DWC_otg host mode operations in a clean manner. USB transfers are + * stopped. + */ +void dwc_otg_hcd_stop(struct usb_hcd *_hcd) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + hprt0_data_t hprt0 = {.d32 = 0}; + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n"); + + /* Turn off all host-specific interrupts. */ + dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if); + + /* + * The root hub should be disconnected before this function is called. + * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue) + * and the QH lists (via ..._hcd_endpoint_disable). + */ + + /* Turn off the vbus power */ + DWC_PRINT("PortPower off\n"); + hprt0.b.prtpwr = 0; + dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0.d32); + return; +} + + +/** Returns the current frame number. */ +int dwc_otg_hcd_get_frame_number(struct usb_hcd *_hcd) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + hfnum_data_t hfnum; + hfnum.d32 = dwc_read_reg32(&dwc_otg_hcd->core_if->host_if-> + host_global_regs->hfnum); + +#ifdef DEBUG_SOF + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n", + hfnum.b.frnum); +#endif /* */ + return hfnum.b.frnum; +} + + +/** + * Frees secondary storage associated with the dwc_otg_hcd structure contained + * in the struct usb_hcd field. + */ +void dwc_otg_hcd_free(struct usb_hcd *_hcd) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + int i; + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n"); + del_timers(dwc_otg_hcd); + + /* Free memory for QH/QTD lists */ + qh_list_free(dwc_otg_hcd, + &dwc_otg_hcd->non_periodic_sched_inactive); + qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_deferred); + qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active); + qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive); + qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready); + qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned); + qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued); + + /* Free memory for the host channels. */ + for (i = 0; i < MAX_EPS_CHANNELS; i++) { + dwc_hc_t * hc = dwc_otg_hcd->hc_ptr_array[i]; + if (hc != NULL) { + DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n",i, hc); + kfree(hc); + } + } + if (dwc_otg_hcd->core_if->dma_enable) { + if (dwc_otg_hcd->status_buf_dma) { + dma_free_coherent(_hcd->self.controller, + DWC_OTG_HCD_STATUS_BUF_SIZE, + dwc_otg_hcd->status_buf, + dwc_otg_hcd->status_buf_dma); + } + } else if (dwc_otg_hcd->status_buf != NULL) { + kfree(dwc_otg_hcd->status_buf); + } + return; +} + + +#ifdef DEBUG +static void dump_urb_info(struct urb *_urb, char *_fn_name) +{ + DWC_PRINT("%s, urb %p\n", _fn_name, _urb); + DWC_PRINT(" Device address: %d\n", usb_pipedevice(_urb->pipe)); + DWC_PRINT(" Endpoint: %d, %s\n", usb_pipeendpoint(_urb->pipe), + (usb_pipein(_urb->pipe) ? "IN" : "OUT")); + DWC_PRINT(" Endpoint type: %s\n", ( { + char *pipetype; + switch (usb_pipetype(_urb->pipe)) { + case PIPE_CONTROL: + pipetype = "CONTROL"; break; + case PIPE_BULK: + pipetype = "BULK"; break; + case PIPE_INTERRUPT: + pipetype = "INTERRUPT"; break; + case PIPE_ISOCHRONOUS: + pipetype = "ISOCHRONOUS"; break; + default: + pipetype = "UNKNOWN"; break; + }; + pipetype; + } )) ; + DWC_PRINT(" Speed: %s\n", ( { + char *speed; + switch (_urb->dev->speed) { + case USB_SPEED_HIGH: + speed = "HIGH"; break; + case USB_SPEED_FULL: + speed = "FULL"; break; + case USB_SPEED_LOW: + speed = "LOW"; break; + default: + speed = "UNKNOWN"; break; + }; + speed; + } )) ; + DWC_PRINT(" Max packet size: %d\n", + usb_maxpacket(_urb->dev, _urb->pipe, usb_pipeout(_urb->pipe))); + DWC_PRINT(" Data buffer length: %d\n", _urb->transfer_buffer_length); + DWC_PRINT(" Transfer buffer: %p, Transfer DMA: %p\n", + _urb->transfer_buffer, (void *)_urb->transfer_dma); + DWC_PRINT(" Setup buffer: %p, Setup DMA: %p\n", _urb->setup_packet, + (void *)_urb->setup_dma); + DWC_PRINT(" Interval: %d\n", _urb->interval); + if (usb_pipetype(_urb->pipe) == PIPE_ISOCHRONOUS) { + int i; + for (i = 0; i < _urb->number_of_packets; i++) { + DWC_PRINT(" ISO Desc %d:\n", i); + DWC_PRINT(" offset: %d, length %d\n", + _urb->iso_frame_desc[i].offset, + _urb->iso_frame_desc[i].length); + } + } +} +static void dump_channel_info(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * qh) +{ + if (qh->channel != NULL) { + dwc_hc_t * hc = qh->channel; + struct list_head *item; + dwc_otg_qh_t * qh_item; + int num_channels = _hcd->core_if->core_params->host_channels; + int i; + dwc_otg_hc_regs_t * hc_regs; + hcchar_data_t hcchar; + hcsplt_data_t hcsplt; + hctsiz_data_t hctsiz; + uint32_t hcdma; + hc_regs = _hcd->core_if->host_if->hc_regs[hc->hc_num]; + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcsplt.d32 = dwc_read_reg32(&hc_regs->hcsplt); + hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz); + hcdma = dwc_read_reg32(&hc_regs->hcdma); + DWC_PRINT(" Assigned to channel %p:\n", hc); + DWC_PRINT(" hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32); + DWC_PRINT(" hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma); + DWC_PRINT(" dev_addr: %d, ep_num: %d, ep_is_in: %d\n", + hc->dev_addr, hc->ep_num, hc->ep_is_in); + DWC_PRINT(" ep_type: %d\n", hc->ep_type); + DWC_PRINT(" max_packet: %d\n", hc->max_packet); + DWC_PRINT(" data_pid_start: %d\n", hc->data_pid_start); + DWC_PRINT(" xfer_started: %d\n", hc->xfer_started); + DWC_PRINT(" halt_status: %d\n", hc->halt_status); + DWC_PRINT(" xfer_buff: %p\n", hc->xfer_buff); + DWC_PRINT(" xfer_len: %d\n", hc->xfer_len); + DWC_PRINT(" qh: %p\n", hc->qh); + DWC_PRINT(" NP inactive sched:\n"); + list_for_each(item, &_hcd->non_periodic_sched_inactive) { + qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry); + DWC_PRINT(" %p\n", qh_item); + } DWC_PRINT(" NP active sched:\n"); + list_for_each(item, &_hcd->non_periodic_sched_deferred) { + qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry); + DWC_PRINT(" %p\n", qh_item); + } DWC_PRINT(" NP deferred sched:\n"); + list_for_each(item, &_hcd->non_periodic_sched_active) { + qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry); + DWC_PRINT(" %p\n", qh_item); + } DWC_PRINT(" Channels: \n"); + for (i = 0; i < num_channels; i++) { + dwc_hc_t * hc = _hcd->hc_ptr_array[i]; + DWC_PRINT(" %2d: %p\n", i, hc); + } + } +} + +#endif /* */ + +/** Starts processing a USB transfer request specified by a USB Request Block + * (URB). mem_flags indicates the type of memory allocation to use while + * processing this URB. */ +int dwc_otg_hcd_urb_enqueue(struct usb_hcd *_hcd, + struct urb *_urb, + gfp_t _mem_flags) +{ + unsigned long flags; + int retval; + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + dwc_otg_qtd_t * qtd; + + local_irq_save(flags); + retval = usb_hcd_link_urb_to_ep(_hcd, _urb); + if (retval) { + local_irq_restore(flags); + return retval; + } +#ifdef DEBUG + if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) { + dump_urb_info(_urb, "dwc_otg_hcd_urb_enqueue"); + } +#endif /* */ + if (!dwc_otg_hcd->flags.b.port_connect_status) { + /* No longer connected. */ + local_irq_restore(flags); + return -ENODEV; + } + qtd = dwc_otg_hcd_qtd_create(_urb); + if (qtd == NULL) { + local_irq_restore(flags); + DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n"); + return -ENOMEM; + } + retval = dwc_otg_hcd_qtd_add(qtd, dwc_otg_hcd); + if (retval < 0) { + DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. " + "Error status %d\n", retval); + dwc_otg_hcd_qtd_free(qtd); + } + local_irq_restore(flags); + return retval; +} + + +/** Aborts/cancels a USB transfer request. Always returns 0 to indicate + * success. */ +int dwc_otg_hcd_urb_dequeue(struct usb_hcd *_hcd, struct urb *_urb, int _status) +{ + unsigned long flags; + dwc_otg_hcd_t * dwc_otg_hcd; + dwc_otg_qtd_t * urb_qtd; + dwc_otg_qh_t * qh; + int retval; + + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue\n"); + local_irq_save(flags); + retval = usb_hcd_check_unlink_urb(_hcd, _urb, _status); + if (retval) { + local_irq_restore(flags); + return retval; + } + + dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + + urb_qtd = (dwc_otg_qtd_t *) _urb->hcpriv; + if (urb_qtd == NULL) { + printk("urb_qtd is NULL for _urb %08x\n",(unsigned)_urb); + goto done; + } + qh = (dwc_otg_qh_t *) urb_qtd->qtd_qh_ptr; + if (qh == NULL) { + goto done; + } +#ifdef DEBUG + if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) { + dump_urb_info(_urb, "dwc_otg_hcd_urb_dequeue"); + if (urb_qtd == qh->qtd_in_process) { + dump_channel_info(dwc_otg_hcd, qh); + } + } + +#endif /* */ + if (urb_qtd == qh->qtd_in_process) { + /* The QTD is in process (it has been assigned to a channel). */ + if (dwc_otg_hcd->flags.b.port_connect_status) { + + /* + * If still connected (i.e. in host mode), halt the + * channel so it can be used for other transfers. If + * no longer connected, the host registers can't be + * written to halt the channel since the core is in + * device mode. + */ + dwc_otg_hc_halt(dwc_otg_hcd->core_if, qh->channel, + DWC_OTG_HC_XFER_URB_DEQUEUE); + } + } + + /* + * Free the QTD and clean up the associated QH. Leave the QH in the + * schedule if it has any remaining QTDs. + */ + dwc_otg_hcd_qtd_remove_and_free(urb_qtd); + if (urb_qtd == qh->qtd_in_process) { + dwc_otg_hcd_qh_deactivate(dwc_otg_hcd, qh, 0); + qh->channel = NULL; + qh->qtd_in_process = NULL; + } else if (list_empty(&qh->qtd_list)) { + dwc_otg_hcd_qh_remove(dwc_otg_hcd, qh); + } +done: + local_irq_restore(flags); + _urb->hcpriv = NULL; + + /* Higher layer software sets URB status. */ +#if 1 /* Fixed bug relate kernel hung when unplug cable */ + usb_hcd_unlink_urb_from_ep(_hcd, _urb); + usb_hcd_giveback_urb(_hcd, _urb, _status); + if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) { + DWC_PRINT("Called usb_hcd_giveback_urb()\n"); + DWC_PRINT(" urb->status = %d\n", _status); + } +#else + if (_status != -ECONNRESET) { + usb_hcd_unlink_urb_from_ep(_hcd, _urb); + usb_hcd_giveback_urb(_hcd, _urb, _status); + if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) { + DWC_PRINT("Called usb_hcd_giveback_urb()\n"); + DWC_PRINT(" urb->status = %d\n", _status); + } + } +#endif + return 0; +} + + +/** Frees resources in the DWC_otg controller related to a given endpoint. Also + * clears state in the HCD related to the endpoint. Any URBs for the endpoint + * must already be dequeued. */ +void dwc_otg_hcd_endpoint_disable(struct usb_hcd *_hcd, + struct usb_host_endpoint *_ep) +{ + dwc_otg_qh_t * qh; + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP DISABLE: _bEndpointAddress=0x%02x, " + "endpoint=%d\n", _ep->desc.bEndpointAddress, + dwc_ep_addr_to_endpoint(_ep->desc.bEndpointAddress)); + qh = (dwc_otg_qh_t *) (_ep->hcpriv); + if (qh != NULL) { + +#ifdef DEBUG + /** Check that the QTD list is really empty */ + if (!list_empty(&qh->qtd_list)) { + DWC_WARN("DWC OTG HCD EP DISABLE:" + " QTD List for this endpoint is not empty\n"); + } + +#endif /* */ + dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd, qh); + _ep->hcpriv = NULL; + } + return; +} + +extern int fscz_debug; +/** Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if + * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid + * interrupt. + * + * This function is called by the USB core when an interrupt occurs */ +irqreturn_t dwc_otg_hcd_irq(struct usb_hcd * _hcd) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + return IRQ_RETVAL(dwc_otg_hcd_handle_intr(dwc_otg_hcd)); +} + +/** Creates Status Change bitmap for the root hub and root port. The bitmap is + * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1 + * is the status change indicator for the single root port. Returns 1 if either + * change indicator is 1, otherwise returns 0. */ +int dwc_otg_hcd_hub_status_data(struct usb_hcd *_hcd, char *_buf) +{ + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + _buf[0] = 0; + _buf[0] |= (dwc_otg_hcd->flags.b.port_connect_status_change + || dwc_otg_hcd->flags.b.port_reset_change + || dwc_otg_hcd->flags.b.port_enable_change + || dwc_otg_hcd->flags.b.port_suspend_change + || dwc_otg_hcd->flags.b.port_over_current_change) << 1; + +#ifdef DEBUG + if (_buf[0]) { + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:" + " Root port status changed\n"); + DWC_DEBUGPL(DBG_HCDV, " port_connect_status_change: %d\n", + dwc_otg_hcd->flags.b.port_connect_status_change); + DWC_DEBUGPL(DBG_HCDV, " port_reset_change: %d\n", + dwc_otg_hcd->flags.b.port_reset_change); + DWC_DEBUGPL(DBG_HCDV, " port_enable_change: %d\n", + dwc_otg_hcd->flags.b.port_enable_change); + DWC_DEBUGPL(DBG_HCDV, " port_suspend_change: %d\n", + dwc_otg_hcd->flags.b.port_suspend_change); + DWC_DEBUGPL(DBG_HCDV, " port_over_current_change: %d\n", + dwc_otg_hcd->flags.b.port_over_current_change); + } + +#endif /* */ + return (_buf[0] != 0); +} + + +#ifdef DWC_HS_ELECT_TST +/* + * Quick and dirty hack to implement the HS Electrical Test + * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature. + * + * This code was copied from our userspace app "hset". It sends a + * Get Device Descriptor control sequence in two parts, first the + * Setup packet by itself, followed some time later by the In and + * Ack packets. Rather than trying to figure out how to add this + * functionality to the normal driver code, we just hijack the + * hardware, using these two function to drive the hardware + * directly. + */ +dwc_otg_core_global_regs_t * global_regs; +dwc_otg_host_global_regs_t * hc_global_regs; +dwc_otg_hc_regs_t * hc_regs; +uint32_t * data_fifo; + +static void do_setup(void) +{ + gintsts_data_t gintsts; + hctsiz_data_t hctsiz; + hcchar_data_t hcchar; + haint_data_t haint; + hcint_data_t hcint; + + /* Enable HAINTs */ + dwc_write_reg32(&hc_global_regs->haintmsk, 0x0001); + + /* Enable HCINTs */ + dwc_write_reg32(&hc_regs->hcintmsk, 0x04a3); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* + * Send Setup packet (Get Device Descriptor) + */ + + /* Make sure channel is disabled */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (hcchar.b.chen) { + + //fprintf(stderr, "Channel already enabled 1, HCCHAR = %08x\n", hcchar.d32); + hcchar.b.chdis = 1; + +// hcchar.b.chen = 1; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + + //sleep(1); + mdelay(1000); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //if (hcchar.b.chen) { + // fprintf(stderr, "** Channel _still_ enabled 1, HCCHAR = %08x **\n", hcchar.d32); + //} + } + + /* Set HCTSIZ */ + hctsiz.d32 = 0; + hctsiz.b.xfersize = 8; + hctsiz.b.pktcnt = 1; + hctsiz.b.pid = DWC_OTG_HC_PID_SETUP; + dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32); + + /* Set HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL; + hcchar.b.epdir = 0; + hcchar.b.epnum = 0; + hcchar.b.mps = 8; + hcchar.b.chen = 1; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + + /* Fill FIFO with Setup data for Get Device Descriptor */ + data_fifo = (uint32_t *) ((char *)global_regs + 0x1000); + dwc_write_reg32(data_fifo++, 0x01000680); + dwc_write_reg32(data_fifo++, 0x00080000); + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "Waiting for HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32); + + /* Wait for host channel interrupt */ + do { + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + } while (gintsts.b.hcintr == 0); + + //fprintf(stderr, "Got HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32); + + /* Disable HCINTs */ + dwc_write_reg32(&hc_regs->hcintmsk, 0x0000); + + /* Disable HAINTs */ + dwc_write_reg32(&hc_global_regs->haintmsk, 0x0000); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); +} + +static void do_in_ack(void) +{ + gintsts_data_t gintsts; + hctsiz_data_t hctsiz; + hcchar_data_t hcchar; + haint_data_t haint; + hcint_data_t hcint; + host_grxsts_data_t grxsts; + + /* Enable HAINTs */ + dwc_write_reg32(&hc_global_regs->haintmsk, 0x0001); + + /* Enable HCINTs */ + dwc_write_reg32(&hc_regs->hcintmsk, 0x04a3); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* + * Receive Control In packet + */ + + /* Make sure channel is disabled */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + if (hcchar.b.chen) { + //fprintf(stderr, "Channel already enabled 2, HCCHAR = %08x\n", hcchar.d32); + hcchar.b.chdis = 1; + hcchar.b.chen = 1; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + + //sleep(1); + mdelay(1000); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //if (hcchar.b.chen) { + // fprintf(stderr, "** Channel _still_ enabled 2, HCCHAR = %08x **\n", hcchar.d32); + //} + } + + /* Set HCTSIZ */ + hctsiz.d32 = 0; + hctsiz.b.xfersize = 8; + hctsiz.b.pktcnt = 1; + hctsiz.b.pid = DWC_OTG_HC_PID_DATA1; + dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32); + + /* Set HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL; + hcchar.b.epdir = 1; + hcchar.b.epnum = 0; + hcchar.b.mps = 8; + hcchar.b.chen = 1; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "Waiting for RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32); + + /* Wait for receive status queue interrupt */ + do { + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + } while (gintsts.b.rxstsqlvl == 0); + + //fprintf(stderr, "Got RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32); + + /* Read RXSTS */ + grxsts.d32 = dwc_read_reg32(&global_regs->grxstsp); + + //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32); + + /* Clear RXSTSQLVL in GINTSTS */ + gintsts.d32 = 0; + gintsts.b.rxstsqlvl = 1; + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + switch (grxsts.b.pktsts) { + case DWC_GRXSTS_PKTSTS_IN: + /* Read the data into the host buffer */ + if (grxsts.b.bcnt > 0) { + int i; + int word_count = (grxsts.b.bcnt + 3) / 4; + data_fifo = (uint32_t *) ((char *)global_regs + 0x1000); + for (i = 0; i < word_count; i++) { + (void)dwc_read_reg32(data_fifo++); + } + } + //fprintf(stderr, "Received %u bytes\n", (unsigned)grxsts.b.bcnt); + break; + default: + //fprintf(stderr, "** Unexpected GRXSTS packet status 1 **\n"); + break; + } + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "Waiting for RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32); + + /* Wait for receive status queue interrupt */ + do { + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + } while (gintsts.b.rxstsqlvl == 0); + + //fprintf(stderr, "Got RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32); + + /* Read RXSTS */ + grxsts.d32 = dwc_read_reg32(&global_regs->grxstsp); + + //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32); + + /* Clear RXSTSQLVL in GINTSTS */ + gintsts.d32 = 0; + gintsts.b.rxstsqlvl = 1; + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + switch (grxsts.b.pktsts) { + case DWC_GRXSTS_PKTSTS_IN_XFER_COMP: + break; + default: + //fprintf(stderr, "** Unexpected GRXSTS packet status 2 **\n"); + break; + } + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "Waiting for HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32); + + /* Wait for host channel interrupt */ + do { + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + } while (gintsts.b.hcintr == 0); + + //fprintf(stderr, "Got HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + // usleep(100000); + // mdelay(100); + mdelay(1); + + /* + * Send handshake packet + */ + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* Make sure channel is disabled */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + if (hcchar.b.chen) { + + //fprintf(stderr, "Channel already enabled 3, HCCHAR = %08x\n", hcchar.d32); + hcchar.b.chdis = 1; + hcchar.b.chen = 1; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + + //sleep(1); + mdelay(1000); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //if (hcchar.b.chen) { + // fprintf(stderr, "** Channel _still_ enabled 3, HCCHAR = %08x **\n", hcchar.d32); + //} + } + + /* Set HCTSIZ */ + hctsiz.d32 = 0; + hctsiz.b.xfersize = 0; + hctsiz.b.pktcnt = 1; + hctsiz.b.pid = DWC_OTG_HC_PID_DATA1; + dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32); + + /* Set HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL; + hcchar.b.epdir = 0; + hcchar.b.epnum = 0; + hcchar.b.mps = 8; + hcchar.b.chen = 1; + dwc_write_reg32(&hc_regs->hcchar, hcchar.d32); + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "Waiting for HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32); + + /* Wait for host channel interrupt */ + do { + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + } while (gintsts.b.hcintr == 0); + + //fprintf(stderr, "Got HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32); + + /* Disable HCINTs */ + dwc_write_reg32(&hc_regs->hcintmsk, 0x0000); + + /* Disable HAINTs */ + dwc_write_reg32(&hc_global_regs->haintmsk, 0x0000); + + /* Read HAINT */ + haint.d32 = dwc_read_reg32(&hc_global_regs->haint); + + //fprintf(stderr, "HAINT: %08x\n", haint.d32); + + /* Read HCINT */ + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + + //fprintf(stderr, "HCINT: %08x\n", hcint.d32); + + /* Read HCCHAR */ + hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar); + + //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32); + + /* Clear HCINT */ + dwc_write_reg32(&hc_regs->hcint, hcint.d32); + + /* Clear HAINT */ + dwc_write_reg32(&hc_global_regs->haint, haint.d32); + + /* Clear GINTSTS */ + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* Read GINTSTS */ + gintsts.d32 = dwc_read_reg32(&global_regs->gintsts); + + //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32); +} + +#endif /* DWC_HS_ELECT_TST */ + +/** Handles hub class-specific requests.*/ +int dwc_otg_hcd_hub_control(struct usb_hcd *_hcd, u16 _typeReq, u16 _wValue, + u16 _wIndex, char *_buf, u16 _wLength) +{ + int retval = 0; + dwc_otg_hcd_t * dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd); + dwc_otg_core_if_t * core_if = hcd_to_dwc_otg_hcd(_hcd)->core_if; + struct usb_hub_descriptor *desc; + hprt0_data_t hprt0 = {.d32 = 0}; + uint32_t port_status; + switch (_typeReq) { + case ClearHubFeature: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearHubFeature 0x%x\n", _wValue); + switch (_wValue) { + case C_HUB_LOCAL_POWER: + case C_HUB_OVER_CURRENT: + /* Nothing required here */ + break; + default: + retval = -EINVAL; + DWC_ERROR("DWC OTG HCD - ClearHubFeature request %xh unknown\n", + _wValue); + } + break; + case ClearPortFeature: + if (!_wIndex || _wIndex > 1) + goto error; + switch (_wValue) { + case USB_PORT_FEAT_ENABLE: + DWC_DEBUGPL(DBG_ANY, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_ENABLE\n"); + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtena = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + break; + case USB_PORT_FEAT_SUSPEND: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_SUSPEND\n"); + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtres = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + + /* Clear Resume bit */ + mdelay(100); + hprt0.b.prtres = 0; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + break; + case USB_PORT_FEAT_POWER: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_POWER\n"); + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtpwr = 0; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + break; + case USB_PORT_FEAT_INDICATOR: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_INDICATOR\n"); + + /* Port inidicator not supported */ + break; + case USB_PORT_FEAT_C_CONNECTION: + /* Clears drivers internal connect status change + * flag */ + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n"); + dwc_otg_hcd->flags.b.port_connect_status_change = 0; + break; + case USB_PORT_FEAT_C_RESET: + /* Clears the driver's internal Port Reset Change + * flag */ + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_C_RESET\n"); + dwc_otg_hcd->flags.b.port_reset_change = 0; + break; + case USB_PORT_FEAT_C_ENABLE: + /* Clears the driver's internal Port + * Enable/Disable Change flag */ + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n"); + dwc_otg_hcd->flags.b.port_enable_change = 0; + break; + case USB_PORT_FEAT_C_SUSPEND: + /* Clears the driver's internal Port Suspend + * Change flag, which is set when resume signaling on + * the host port is complete */ + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n"); + dwc_otg_hcd->flags.b.port_suspend_change = 0; + break; + case USB_PORT_FEAT_C_OVER_CURRENT: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n"); + dwc_otg_hcd->flags.b.port_over_current_change = 0; + break; + default: + retval = -EINVAL; + DWC_ERROR("DWC OTG HCD - " + "ClearPortFeature request %xh " + "unknown or unsupported\n", _wValue); + } + break; + case GetHubDescriptor: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "GetHubDescriptor\n"); + desc = (struct usb_hub_descriptor *)_buf; + desc->bDescLength = 9; + desc->bDescriptorType = 0x29; + desc->bNbrPorts = 1; + desc->wHubCharacteristics = 0x08; + desc->bPwrOn2PwrGood = 1; + desc->bHubContrCurrent = 0; + desc->bitmap[0] = 0; + desc->bitmap[1] = 0xff; + break; + case GetHubStatus: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "GetHubStatus\n"); + memset(_buf, 0, 4); + break; + case GetPortStatus: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "GetPortStatus\n"); + if (!_wIndex || _wIndex > 1) + goto error; + port_status = 0; + if (dwc_otg_hcd->flags.b.port_connect_status_change) + port_status |= (1 << USB_PORT_FEAT_C_CONNECTION); + if (dwc_otg_hcd->flags.b.port_enable_change) + port_status |= (1 << USB_PORT_FEAT_C_ENABLE); + if (dwc_otg_hcd->flags.b.port_suspend_change) + port_status |= (1 << USB_PORT_FEAT_C_SUSPEND); + if (dwc_otg_hcd->flags.b.port_reset_change) + port_status |= (1 << USB_PORT_FEAT_C_RESET); + if (dwc_otg_hcd->flags.b.port_over_current_change) { + DWC_ERROR("Device Not Supported\n"); + port_status |= (1 << USB_PORT_FEAT_C_OVER_CURRENT); + } + if (!dwc_otg_hcd->flags.b.port_connect_status) { + /* + * The port is disconnected, which means the core is + * either in device mode or it soon will be. Just + * return 0's for the remainder of the port status + * since the port register can't be read if the core + * is in device mode. + */ + *((__le32 *) _buf) = cpu_to_le32(port_status); + break; + } + hprt0.d32 = dwc_read_reg32(core_if->host_if->hprt0); + DWC_DEBUGPL(DBG_HCDV, " HPRT0: 0x%08x\n", hprt0.d32); + if (hprt0.b.prtconnsts) + port_status |= (1 << USB_PORT_FEAT_CONNECTION); + if (hprt0.b.prtena) + port_status |= (1 << USB_PORT_FEAT_ENABLE); + if (hprt0.b.prtsusp) + port_status |= (1 << USB_PORT_FEAT_SUSPEND); + if (hprt0.b.prtovrcurract) + port_status |= (1 << USB_PORT_FEAT_OVER_CURRENT); + if (hprt0.b.prtrst) + port_status |= (1 << USB_PORT_FEAT_RESET); + if (hprt0.b.prtpwr) + port_status |= (1 << USB_PORT_FEAT_POWER); + if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) + port_status |= (1 << USB_PORT_FEAT_HIGHSPEED); + + else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED) + port_status |= (1 << USB_PORT_FEAT_LOWSPEED); + if (hprt0.b.prttstctl) + port_status |= (1 << USB_PORT_FEAT_TEST); + + /* USB_PORT_FEAT_INDICATOR unsupported always 0 */ + *((__le32 *) _buf) = cpu_to_le32(port_status); + break; + case SetHubFeature: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "SetHubFeature\n"); + + /* No HUB features supported */ + break; + case SetPortFeature: + if (_wValue != USB_PORT_FEAT_TEST && (!_wIndex || _wIndex > 1)) + goto error; + if (!dwc_otg_hcd->flags.b.port_connect_status) { + /* + * The port is disconnected, which means the core is + * either in device mode or it soon will be. Just + * return without doing anything since the port + * register can't be written if the core is in device + * mode. + */ + break; + } + switch (_wValue) { + case USB_PORT_FEAT_SUSPEND: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "SetPortFeature - USB_PORT_FEAT_SUSPEND\n"); + if (_hcd->self.otg_port == _wIndex + && _hcd->self.b_hnp_enable) { + gotgctl_data_t gotgctl = {.d32 = 0}; + gotgctl.b.hstsethnpen = 1; + dwc_modify_reg32(&core_if->core_global_regs-> + gotgctl, 0, gotgctl.d32); + core_if->op_state = A_SUSPEND; + } + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtsusp = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + + //DWC_PRINT( "SUSPEND: HPRT0=%0x\n", hprt0.d32); + /* Suspend the Phy Clock */ + { + pcgcctl_data_t pcgcctl = {.d32 = 0}; + pcgcctl.b.stoppclk = 1; + dwc_write_reg32(core_if->pcgcctl, pcgcctl.d32); + } + + /* For HNP the bus must be suspended for at least 200ms. */ + if (_hcd->self.b_hnp_enable) { + mdelay(200); + + //DWC_PRINT( "SUSPEND: wait complete! (%d)\n", _hcd->state); + } + break; + case USB_PORT_FEAT_POWER: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "SetPortFeature - USB_PORT_FEAT_POWER\n"); + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtpwr = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + break; + case USB_PORT_FEAT_RESET: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "SetPortFeature - USB_PORT_FEAT_RESET\n"); + hprt0.d32 = dwc_otg_read_hprt0(core_if); + + /* When B-Host the Port reset bit is set in + * the Start HCD Callback function, so that + * the reset is started within 1ms of the HNP + * success interrupt. */ + if (!_hcd->self.is_b_host) { + hprt0.b.prtrst = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + } + + /* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */ + MDELAY(60); + hprt0.b.prtrst = 0; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + break; + +#ifdef DWC_HS_ELECT_TST + case USB_PORT_FEAT_TEST: + { + uint32_t t; + gintmsk_data_t gintmsk; + t = (_wIndex >> 8); /* MSB wIndex USB */ + DWC_DEBUGPL(DBG_HCD, + "DWC OTG HCD HUB CONTROL - " + "SetPortFeature - USB_PORT_FEAT_TEST %d\n", + t); + warn("USB_PORT_FEAT_TEST %d\n", t); + if (t < 6) { + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prttstctl = t; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); + } else { + /* Setup global vars with reg addresses (quick and + * dirty hack, should be cleaned up) + */ + global_regs = core_if->core_global_regs; + hc_global_regs = core_if->host_if->host_global_regs; + hc_regs = (dwc_otg_hc_regs_t *) ((char *) global_regs + 0x500); + data_fifo = (uint32_t *) ((char *)global_regs + 0x1000); + if (t == 6) { /* HS_HOST_PORT_SUSPEND_RESUME */ + /* Save current interrupt mask */ + gintmsk.d32 =dwc_read_reg32(&global_regs->gintmsk); + + /* Disable all interrupts while we muck with + * the hardware directly + */ + dwc_write_reg32(&global_regs->gintmsk, 0); + + /* 15 second delay per the test spec */ + mdelay(15000); + + /* Drive suspend on the root port */ + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtsusp = 1; + hprt0.b.prtres = 0; + dwc_write_reg32(core_if->host_if->hprt0,hprt0.d32); + + /* 15 second delay per the test spec */ + mdelay(15000); + + /* Drive resume on the root port */ + hprt0.d32 = dwc_otg_read_hprt0(core_if); + hprt0.b.prtsusp = 0; + hprt0.b.prtres = 1; + dwc_write_reg32(core_if->host_if->hprt0,hprt0.d32); + mdelay(100); + + /* Clear the resume bit */ + hprt0.b.prtres = 0; + dwc_write_reg32(core_if->host_if->hprt0,hprt0.d32); + + /* Restore interrupts */ + dwc_write_reg32(&global_regs->gintmsk,gintmsk.d32); + } else if (t == 7) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */ + /* Save current interrupt mask */ + gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk); + + /* Disable all interrupts while we muck with + * the hardware directly + */ + dwc_write_reg32(&global_regs->gintmsk, 0); + + /* 15 second delay per the test spec */ + mdelay(15000); + + /* Send the Setup packet */ + do_setup(); + + /* 15 second delay so nothing else happens for awhile */ + mdelay(15000); + + /* Restore interrupts */ + dwc_write_reg32(&global_regs->gintmsk,gintmsk.d32); + } else if (t == 8) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */ + /* Save current interrupt mask */ + gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk); + + /* Disable all interrupts while we muck with + * the hardware directly + */ + dwc_write_reg32(&global_regs->gintmsk, 0); + + /* Send the Setup packet */ + do_setup(); + + /* 15 second delay so nothing else happens for awhile */ + mdelay(15000); + + /* Send the In and Ack packets */ + do_in_ack(); + + /* 15 second delay so nothing else happens for awhile */ + mdelay(15000); + + /* Restore interrupts */ + dwc_write_reg32(&global_regs->gintmsk,gintmsk.d32); + } + } + break; + } + +#endif /* DWC_HS_ELECT_TST */ + case USB_PORT_FEAT_INDICATOR: + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - " + "SetPortFeature - USB_PORT_FEAT_INDICATOR\n"); + /* Not supported */ + break; + default: + retval = -EINVAL; + DWC_ERROR("DWC OTG HCD - " + "SetPortFeature request %xh " + "unknown or unsupported\n", _wValue); + break; + } + break; + default: + error:retval = -EINVAL; + DWC_WARN("DWC OTG HCD - " + "Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n", + _typeReq, _wIndex, _wValue); + break; + } + return retval; +} + + +/** + * Assigns transactions from a QTD to a free host channel and initializes the + * host channel to perform the transactions. The host channel is removed from + * the free list. + * + * @param _hcd The HCD state structure. + * @param _qh Transactions from the first QTD for this QH are selected and + * assigned to a free host channel. + */ +static void assign_and_init_hc(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + dwc_hc_t * hc; + dwc_otg_qtd_t * qtd; + struct urb *urb; + DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p)\n", __func__, _hcd, _qh); + hc = list_entry(_hcd->free_hc_list.next, dwc_hc_t, hc_list_entry); + + /* Remove the host channel from the free list. */ + list_del_init(&hc->hc_list_entry); + qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); + urb = qtd->urb; + _qh->channel = hc; + _qh->qtd_in_process = qtd; + + /* + * Use usb_pipedevice to determine device address. This address is + * 0 before the SET_ADDRESS command and the correct address afterward. + */ + hc->dev_addr = usb_pipedevice(urb->pipe); + hc->ep_num = usb_pipeendpoint(urb->pipe); + if (urb->dev->speed == USB_SPEED_LOW) { + hc->speed = DWC_OTG_EP_SPEED_LOW; + } else if (urb->dev->speed == USB_SPEED_FULL) { + hc->speed = DWC_OTG_EP_SPEED_FULL; + } else { + hc->speed = DWC_OTG_EP_SPEED_HIGH; + } + hc->max_packet = dwc_max_packet(_qh->maxp); + hc->xfer_started = 0; + hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS; + hc->error_state = (qtd->error_count > 0); + hc->halt_on_queue = 0; + hc->halt_pending = 0; + hc->requests = 0; + + /* + * The following values may be modified in the transfer type section + * below. The xfer_len value may be reduced when the transfer is + * started to accommodate the max widths of the XferSize and PktCnt + * fields in the HCTSIZn register. + */ + hc->do_ping = _qh->ping_state; + hc->ep_is_in = (usb_pipein(urb->pipe) != 0); + hc->data_pid_start = _qh->data_toggle; + hc->multi_count = 1; + if (_hcd->core_if->dma_enable) { + hc->xfer_buff = + (uint8_t *)(u32)urb->transfer_dma + urb->actual_length; + } else { + hc->xfer_buff = + (uint8_t *) urb->transfer_buffer + urb->actual_length; + } + hc->xfer_len = urb->transfer_buffer_length - urb->actual_length; + hc->xfer_count = 0; + + /* + * Set the split attributes + */ + hc->do_split = 0; + if (_qh->do_split) { + hc->do_split = 1; + hc->xact_pos = qtd->isoc_split_pos; + hc->complete_split = qtd->complete_split; + hc->hub_addr = urb->dev->tt->hub->devnum; + hc->port_addr = urb->dev->ttport; + } + switch (usb_pipetype(urb->pipe)) { + case PIPE_CONTROL: + hc->ep_type = DWC_OTG_EP_TYPE_CONTROL; + switch (qtd->control_phase) { + case DWC_OTG_CONTROL_SETUP: + DWC_DEBUGPL(DBG_HCDV, " Control setup transaction\n"); + hc->do_ping = 0; + hc->ep_is_in = 0; + hc->data_pid_start = DWC_OTG_HC_PID_SETUP; + if (_hcd->core_if->dma_enable) { + hc->xfer_buff = (uint8_t *)(u32)urb->setup_dma; + } else { + hc->xfer_buff = (uint8_t *) urb->setup_packet; + } + hc->xfer_len = 8; + break; + case DWC_OTG_CONTROL_DATA: + DWC_DEBUGPL(DBG_HCDV, " Control data transaction\n"); + hc->data_pid_start = qtd->data_toggle; + break; + case DWC_OTG_CONTROL_STATUS: + + /* + * Direction is opposite of data direction or IN if no + * data. + */ + DWC_DEBUGPL(DBG_HCDV, + " Control status transaction\n"); + if (urb->transfer_buffer_length == 0) { + hc->ep_is_in = 1; + } else { + hc->ep_is_in = (usb_pipein(urb->pipe) != USB_DIR_IN); + } + if (hc->ep_is_in) { + hc->do_ping = 0; + } + hc->data_pid_start = DWC_OTG_HC_PID_DATA1; + hc->xfer_len = 0; + if (_hcd->core_if->dma_enable) { + hc->xfer_buff = (uint8_t *)(u32)_hcd->status_buf_dma; + } else { + hc->xfer_buff = (uint8_t *) _hcd->status_buf; + } + break; + } + break; + case PIPE_BULK: + hc->ep_type = DWC_OTG_EP_TYPE_BULK; + break; + case PIPE_INTERRUPT: + hc->ep_type = DWC_OTG_EP_TYPE_INTR; + break; + case PIPE_ISOCHRONOUS: + { + struct usb_iso_packet_descriptor *frame_desc; + frame_desc = &urb->iso_frame_desc[qtd->isoc_frame_index]; + hc->ep_type = DWC_OTG_EP_TYPE_ISOC; + if (_hcd->core_if->dma_enable) { + hc->xfer_buff = (uint8_t *)(u32)urb->transfer_dma; + } else { + hc->xfer_buff = (uint8_t *) urb->transfer_buffer; + } + hc->xfer_buff += frame_desc->offset + qtd->isoc_split_offset; + hc->xfer_len = frame_desc->length - qtd->isoc_split_offset; + if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) { + if (hc->xfer_len <= 188) { + hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL; + } else { + hc->xact_pos = DWC_HCSPLIT_XACTPOS_BEGIN; + } + } + } + break; + } + + if (hc->ep_type == DWC_OTG_EP_TYPE_INTR + || hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + /* + * This value may be modified when the transfer is started to + * reflect the actual transfer length. + */ + hc->multi_count = dwc_hb_mult(_qh->maxp); + } + dwc_otg_hc_init(_hcd->core_if, hc); + hc->qh = _qh; +} + + +/** + * This function selects transactions from the HCD transfer schedule and + * assigns them to available host channels. It is called from HCD interrupt + * handler functions. + * + * @param _hcd The HCD state structure. + * + * @return The types of new transactions that were assigned to host channels. + */ +dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t *_hcd) +{ + struct list_head *qh_ptr; + dwc_otg_qh_t * qh; + int num_channels; + dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE; + +#ifdef DEBUG_SOF + DWC_DEBUGPL(DBG_HCD, " Select Transactions\n"); +#endif /* */ + + /* Process entries in the periodic ready list. */ + qh_ptr = _hcd->periodic_sched_ready.next; + while (qh_ptr != &_hcd->periodic_sched_ready + && !list_empty(&_hcd->free_hc_list)) { + qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry); + assign_and_init_hc(_hcd, qh); + /* + * Move the QH from the periodic ready schedule to the + * periodic assigned schedule. + */ + qh_ptr = qh_ptr->next; + list_move(&qh->qh_list_entry, &_hcd->periodic_sched_assigned); + ret_val = DWC_OTG_TRANSACTION_PERIODIC; + } + /* + * Process entries in the deferred portion of the non-periodic list. + * A NAK put them here and, at the right time, they need to be + * placed on the sched_inactive list. + */ + qh_ptr = _hcd->non_periodic_sched_deferred.next; + while (qh_ptr != &_hcd->non_periodic_sched_deferred) { + uint16_t frame_number = + dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(_hcd)); + unsigned long flags; + qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry); + qh_ptr = qh_ptr->next; + + if (dwc_frame_num_le(qh->sched_frame, frame_number)) { + // NAK did this + /* + * Move the QH from the non periodic deferred schedule to + * the non periodic inactive schedule. + */ + local_irq_save(flags); + list_move(&qh->qh_list_entry, + &_hcd->non_periodic_sched_inactive); + local_irq_restore(flags); + } + } + + /* + * Process entries in the inactive portion of the non-periodic + * schedule. Some free host channels may not be used if they are + * reserved for periodic transfers. + */ + qh_ptr = _hcd->non_periodic_sched_inactive.next; + num_channels = _hcd->core_if->core_params->host_channels; + while (qh_ptr != &_hcd->non_periodic_sched_inactive && + (_hcd->non_periodic_channels < + num_channels - _hcd->periodic_channels) + && !list_empty(&_hcd->free_hc_list)) { + qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry); + assign_and_init_hc(_hcd, qh); + + /* + * Move the QH from the non-periodic inactive schedule to the + * non-periodic active schedule. + */ + qh_ptr = qh_ptr->next; + list_move(&qh->qh_list_entry, + &_hcd->non_periodic_sched_active); + if (ret_val == DWC_OTG_TRANSACTION_NONE) { + ret_val = DWC_OTG_TRANSACTION_NON_PERIODIC; + } else { + ret_val = DWC_OTG_TRANSACTION_ALL; + } + _hcd->non_periodic_channels++; + } + return ret_val; +} + +/** + * Attempts to queue a single transaction request for a host channel + * associated with either a periodic or non-periodic transfer. This function + * assumes that there is space available in the appropriate request queue. For + * an OUT transfer or SETUP transaction in Slave mode, it checks whether space + * is available in the appropriate Tx FIFO. + * + * @param _hcd The HCD state structure. + * @param _hc Host channel descriptor associated with either a periodic or + * non-periodic transfer. + * @param _fifo_dwords_avail Number of DWORDs available in the periodic Tx + * FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic + * transfers. + * + * @return 1 if a request is queued and more requests may be needed to + * complete the transfer, 0 if no more requests are required for this + * transfer, -1 if there is insufficient space in the Tx FIFO. + */ +static int queue_transaction(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, uint16_t _fifo_dwords_avail) +{ + int retval; + if (_hcd->core_if->dma_enable) { + if (!_hc->xfer_started) { + dwc_otg_hc_start_transfer(_hcd->core_if, _hc); + _hc->qh->ping_state = 0; + } + retval = 0; + } else if (_hc->halt_pending) { + /* Don't queue a request if the channel has been halted. */ + retval = 0; + } else if (_hc->halt_on_queue) { + dwc_otg_hc_halt(_hcd->core_if, _hc, _hc->halt_status); + retval = 0; + } else if (_hc->do_ping) { + if (!_hc->xfer_started) { + dwc_otg_hc_start_transfer(_hcd->core_if, _hc); + } + retval = 0; + } else if (!_hc->ep_is_in || _hc->data_pid_start == DWC_OTG_HC_PID_SETUP) { + if ((_fifo_dwords_avail * 4) >= _hc->max_packet) { + if (!_hc->xfer_started) { + dwc_otg_hc_start_transfer(_hcd->core_if, _hc); + retval = 1; + } else { + retval = dwc_otg_hc_continue_transfer(_hcd->core_if, _hc); + } + } else { + retval = -1; + } + } else { + if (!_hc->xfer_started) { + dwc_otg_hc_start_transfer(_hcd->core_if, _hc); + retval = 1; + } else { + retval = dwc_otg_hc_continue_transfer(_hcd->core_if, _hc); + } + } + return retval; +} + + +/** + * Processes active non-periodic channels and queues transactions for these + * channels to the DWC_otg controller. After queueing transactions, the NP Tx + * FIFO Empty interrupt is enabled if there are more transactions to queue as + * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx + * FIFO Empty interrupt is disabled. + */ +static void process_non_periodic_channels(dwc_otg_hcd_t * _hcd) +{ + gnptxsts_data_t tx_status; + struct list_head *orig_qh_ptr; + dwc_otg_qh_t * qh; + int status; + int no_queue_space = 0; + int no_fifo_space = 0; + int more_to_do = 0; + dwc_otg_core_global_regs_t * global_regs = + _hcd->core_if->core_global_regs; + DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n"); + +#ifdef DEBUG + tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts); + DWC_DEBUGPL(DBG_HCDV, " NP Tx Req Queue Space Avail (before queue): %d\n", + tx_status.b.nptxqspcavail); + DWC_DEBUGPL(DBG_HCDV, " NP Tx FIFO Space Avail (before queue): %d\n", + tx_status.b.nptxfspcavail); +#endif /* */ + /* + * Keep track of the starting point. Skip over the start-of-list + * entry. + */ + if (_hcd->non_periodic_qh_ptr == &_hcd->non_periodic_sched_active) { + _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next; + } + orig_qh_ptr = _hcd->non_periodic_qh_ptr; + + /* + * Process once through the active list or until no more space is + * available in the request queue or the Tx FIFO. + */ + do { + + tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts); + if (!_hcd->core_if->dma_enable + && tx_status.b.nptxqspcavail == 0) { + no_queue_space = 1; + break; + } + qh = + list_entry(_hcd->non_periodic_qh_ptr, dwc_otg_qh_t, + qh_list_entry); + status = + queue_transaction(_hcd, qh->channel, + tx_status.b.nptxfspcavail); + + if (status > 0) { + more_to_do = 1; + } else if (status < 0) { + no_fifo_space = 1; + break; + } +#ifdef OTG_PLB_DMA_TASKLET + if (atomic_read(&release_later)) { + break; + } +#endif + + /* Advance to next QH, skipping start-of-list entry. */ + _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next; + if (_hcd->non_periodic_qh_ptr == &_hcd->non_periodic_sched_active) { + _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next; + } + } while (_hcd->non_periodic_qh_ptr != orig_qh_ptr); + if (!_hcd->core_if->dma_enable) { + gintmsk_data_t intr_mask = {.d32 = 0}; + intr_mask.b.nptxfempty = 1; + +#ifndef OTG_PLB_DMA_TASKLET +#ifdef DEBUG + tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts); + DWC_DEBUGPL(DBG_HCDV, " NP Tx Req Queue Space Avail (after queue): %d\n", + tx_status.b.nptxqspcavail); + DWC_DEBUGPL(DBG_HCDV, " NP Tx FIFO Space Avail (after queue): %d\n", + tx_status.b.nptxfspcavail); +#endif /* */ +#endif + + if (more_to_do || no_queue_space || no_fifo_space) { + + /* + * May need to queue more transactions as the request + * queue or Tx FIFO empties. Enable the non-periodic + * Tx FIFO empty interrupt. (Always use the half-empty + * level to ensure that new requests are loaded as + * soon as possible.) + */ + dwc_modify_reg32(&global_regs->gintmsk, 0,intr_mask.d32); + } else { + /* + * Disable the Tx FIFO empty interrupt since there are + * no more transactions that need to be queued right + * now. This function is called from interrupt + * handlers to queue more transactions as transfer + * states change. + */ + dwc_modify_reg32(&global_regs->gintmsk,intr_mask.d32, 0); + } + } +} + +/** + * Processes periodic channels for the next frame and queues transactions for + * these channels to the DWC_otg controller. After queueing transactions, the + * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions + * to queue as Periodic Tx FIFO or request queue space becomes available. + * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled. + */ +static void process_periodic_channels(dwc_otg_hcd_t * _hcd) +{ + hptxsts_data_t tx_status; + struct list_head *qh_ptr; + dwc_otg_qh_t * qh; + int status; + int no_queue_space = 0; + int no_fifo_space = 0; + dwc_otg_host_global_regs_t * host_regs; + host_regs = _hcd->core_if->host_if->host_global_regs; + DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n"); + +#ifdef DEBUG + tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts); + DWC_DEBUGPL(DBG_HCDV, " P Tx Req Queue Space Avail (before queue): %d\n", + tx_status.b.ptxqspcavail); + DWC_DEBUGPL(DBG_HCDV, " P Tx FIFO Space Avail (before queue): %d\n", + tx_status.b.ptxfspcavail); + +#endif /* */ + qh_ptr = _hcd->periodic_sched_assigned.next; + while (qh_ptr != &_hcd->periodic_sched_assigned) { + tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts); + if (tx_status.b.ptxqspcavail == 0) { + no_queue_space = 1; + break; + } + qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry); + + /* + * Set a flag if we're queuing high-bandwidth in slave mode. + * The flag prevents any halts to get into the request queue in + * the middle of multiple high-bandwidth packets getting queued. + */ + if ((!_hcd->core_if->dma_enable) && + (qh->channel->multi_count > 1)) { + _hcd->core_if->queuing_high_bandwidth = 1; + } + status = queue_transaction(_hcd, qh->channel,tx_status.b.ptxfspcavail); + if (status < 0) { + no_fifo_space = 1; + break; + } + + /* + * In Slave mode, stay on the current transfer until there is + * nothing more to do or the high-bandwidth request count is + * reached. In DMA mode, only need to queue one request. The + * controller automatically handles multiple packets for + * high-bandwidth transfers. + */ + if (_hcd->core_if->dma_enable || + (status == 0 || qh->channel->requests == qh->channel->multi_count)) { + qh_ptr = qh_ptr->next; + + /* + * Move the QH from the periodic assigned schedule to + * the periodic queued schedule. + */ + list_move(&qh->qh_list_entry, + &_hcd->periodic_sched_queued); + + /* done queuing high bandwidth */ + _hcd->core_if->queuing_high_bandwidth = 0; + } + } + if (!_hcd->core_if->dma_enable) { + dwc_otg_core_global_regs_t * global_regs; + gintmsk_data_t intr_mask = {.d32 = 0}; + global_regs = _hcd->core_if->core_global_regs; + intr_mask.b.ptxfempty = 1; + +#ifdef DEBUG + tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts); + DWC_DEBUGPL(DBG_HCDV," P Tx Req Queue Space Avail (after queue): %d\n", + tx_status.b.ptxqspcavail); + DWC_DEBUGPL(DBG_HCDV," P Tx FIFO Space Avail (after queue): %d\n", + tx_status.b.ptxfspcavail); + +#endif /* */ + if (!(list_empty(&_hcd->periodic_sched_assigned)) + || no_queue_space || no_fifo_space) { + + /* + * May need to queue more transactions as the request + * queue or Tx FIFO empties. Enable the periodic Tx + * FIFO empty interrupt. (Always use the half-empty + * level to ensure that new requests are loaded as + * soon as possible.) + */ + dwc_modify_reg32(&global_regs->gintmsk, 0,intr_mask.d32); + } else { + /* + * Disable the Tx FIFO empty interrupt since there are + * no more transactions that need to be queued right + * now. This function is called from interrupt + * handlers to queue more transactions as transfer + * states change. + */ + dwc_modify_reg32(&global_regs->gintmsk,intr_mask.d32, 0); + } + } +} + + + +/** + * This function processes the currently active host channels and queues + * transactions for these channels to the DWC_otg controller. It is called + * from HCD interrupt handler functions. + * + * @param _hcd The HCD state structure. + * @param _tr_type The type(s) of transactions to queue (non-periodic, + * periodic, or both). + */ +void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * _hcd, + dwc_otg_transaction_type_e _tr_type) +{ + +#ifdef DEBUG_SOF + DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n"); + +#endif /* */ + /* Process host channels associated with periodic transfers. */ + if ((_tr_type == DWC_OTG_TRANSACTION_PERIODIC + || _tr_type == DWC_OTG_TRANSACTION_ALL) + && !list_empty(&_hcd->periodic_sched_assigned)) { + process_periodic_channels(_hcd); + } + + /* Process host channels associated with non-periodic transfers. */ + if ((_tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC + || _tr_type == DWC_OTG_TRANSACTION_ALL)) { + if (!list_empty(&_hcd->non_periodic_sched_active)) { + process_non_periodic_channels(_hcd); + } else { + /* + * Ensure NP Tx FIFO empty interrupt is disabled when + * there are no non-periodic transfers to process. + */ + gintmsk_data_t gintmsk = {.d32 = 0}; + gintmsk.b.nptxfempty = 1; + dwc_modify_reg32(&_hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0); + } + } +} + +/** + * Sets the final status of an URB and returns it to the device driver. Any + * required cleanup of the URB is performed. + */ +void dwc_otg_hcd_complete_urb(dwc_otg_hcd_t * _hcd, struct urb *_urb, + int _status) +__releases(_hcd->lock) +__acquires(_hcd->lock) +{ + +#ifdef DEBUG + if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) { + DWC_PRINT("%s: urb %p, device %d, ep %d %s, status=%d\n", + __func__, _urb, usb_pipedevice(_urb->pipe), + usb_pipeendpoint(_urb->pipe), + usb_pipein(_urb->pipe) ? "IN" : "OUT", _status); + if (usb_pipetype(_urb->pipe) == PIPE_ISOCHRONOUS) { + int i; + for (i = 0; i < _urb->number_of_packets; i++) { + DWC_PRINT(" ISO Desc %d status: %d\n", i, + _urb->iso_frame_desc[i].status); + } + } + } + +#endif /* */ + _urb->hcpriv = NULL; + usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(_hcd), _urb); + spin_unlock(&_hcd->lock); + usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(_hcd), _urb, _status); + spin_lock(&_hcd->lock); +} + + +/* + * Returns the Queue Head for an URB. + */ +dwc_otg_qh_t * dwc_urb_to_qh(struct urb *_urb) +{ + struct usb_host_endpoint *ep = dwc_urb_to_endpoint(_urb); + return (dwc_otg_qh_t *) ep->hcpriv; +} + + +#ifdef DEBUG +void dwc_print_setup_data(uint8_t * setup) +{ + int i; + if (CHK_DEBUG_LEVEL(DBG_HCD)) { + DWC_PRINT("Setup Data = MSB "); + for (i = 7; i >= 0; i--) + DWC_PRINT("%02x ", setup[i]); + DWC_PRINT("\n"); + DWC_PRINT(" bmRequestType Tranfer = %s\n", + (setup[0] & 0x80) ? "Device-to-Host" : + "Host-to-Device"); + DWC_PRINT(" bmRequestType Type = "); + switch ((setup[0] & 0x60) >> 5) { + case 0: + DWC_PRINT("Standard\n"); + break; + case 1: + DWC_PRINT("Class\n"); + break; + case 2: + DWC_PRINT("Vendor\n"); + break; + case 3: + DWC_PRINT("Reserved\n"); + break; + } + DWC_PRINT(" bmRequestType Recipient = "); + switch (setup[0] & 0x1f) { + case 0: + DWC_PRINT("Device\n"); + break; + case 1: + DWC_PRINT("Interface\n"); + break; + case 2: + DWC_PRINT("Endpoint\n"); + break; + case 3: + DWC_PRINT("Other\n"); + break; + default: + DWC_PRINT("Reserved\n"); + break; + } + DWC_PRINT(" bRequest = 0x%0x\n", setup[1]); + DWC_PRINT(" wValue = 0x%0x\n", *((uint16_t *) & setup[2])); + DWC_PRINT(" wIndex = 0x%0x\n", *((uint16_t *) & setup[4])); + DWC_PRINT(" wLength = 0x%0x\n\n", *((uint16_t *) & setup[6])); + } +} + + +#endif /* */ +void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * _hcd) +{ + +/* +#ifdef DEBUG + DWC_PRINT("Frame remaining at SOF:\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->frrem_samples, _hcd->frrem_accum, + (_hcd->frrem_samples > 0) ? + _hcd->frrem_accum/_hcd->frrem_samples : 0); + + DWC_PRINT("\n"); + DWC_PRINT("Frame remaining at start_transfer (uframe 7):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->core_if->hfnum_7_samples, _hcd->core_if->hfnum_7_frrem_accum, + (_hcd->core_if->hfnum_7_samples > 0) ? + _hcd->core_if->hfnum_7_frrem_accum/_hcd->core_if->hfnum_7_samples : 0); + DWC_PRINT("Frame remaining at start_transfer (uframe 0):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->core_if->hfnum_0_samples, _hcd->core_if->hfnum_0_frrem_accum, + (_hcd->core_if->hfnum_0_samples > 0) ? + _hcd->core_if->hfnum_0_frrem_accum/_hcd->core_if->hfnum_0_samples : 0); + DWC_PRINT("Frame remaining at start_transfer (uframe 1-6):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->core_if->hfnum_other_samples, _hcd->core_if->hfnum_other_frrem_accum, + (_hcd->core_if->hfnum_other_samples > 0) ? + _hcd->core_if->hfnum_other_frrem_accum/_hcd->core_if->hfnum_other_samples : 0); + + DWC_PRINT("\n"); + DWC_PRINT("Frame remaining at sample point A (uframe 7):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->hfnum_7_samples_a, _hcd->hfnum_7_frrem_accum_a, + (_hcd->hfnum_7_samples_a > 0) ? + _hcd->hfnum_7_frrem_accum_a/_hcd->hfnum_7_samples_a : 0); + DWC_PRINT("Frame remaining at sample point A (uframe 0):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->hfnum_0_samples_a, _hcd->hfnum_0_frrem_accum_a, + (_hcd->hfnum_0_samples_a > 0) ? + _hcd->hfnum_0_frrem_accum_a/_hcd->hfnum_0_samples_a : 0); + DWC_PRINT("Frame remaining at sample point A (uframe 1-6):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->hfnum_other_samples_a, _hcd->hfnum_other_frrem_accum_a, + (_hcd->hfnum_other_samples_a > 0) ? + _hcd->hfnum_other_frrem_accum_a/_hcd->hfnum_other_samples_a : 0); + + DWC_PRINT("\n"); + DWC_PRINT("Frame remaining at sample point B (uframe 7):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->hfnum_7_samples_b, _hcd->hfnum_7_frrem_accum_b, + (_hcd->hfnum_7_samples_b > 0) ? + _hcd->hfnum_7_frrem_accum_b/_hcd->hfnum_7_samples_b : 0); + DWC_PRINT("Frame remaining at sample point B (uframe 0):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->hfnum_0_samples_b, _hcd->hfnum_0_frrem_accum_b, + (_hcd->hfnum_0_samples_b > 0) ? + _hcd->hfnum_0_frrem_accum_b/_hcd->hfnum_0_samples_b : 0); + DWC_PRINT("Frame remaining at sample point B (uframe 1-6):\n"); + DWC_PRINT(" samples %u, accum %llu, avg %llu\n", + _hcd->hfnum_other_samples_b, _hcd->hfnum_other_frrem_accum_b, + (_hcd->hfnum_other_samples_b > 0) ? + _hcd->hfnum_other_frrem_accum_b/_hcd->hfnum_other_samples_b : 0); +#endif +*/ +} void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * _hcd) +{ + +#ifdef DEBUG + int num_channels; + int i; + gnptxsts_data_t np_tx_status; + hptxsts_data_t p_tx_status; + num_channels = _hcd->core_if->core_params->host_channels; + DWC_PRINT("\n"); + DWC_PRINT + ("************************************************************\n"); + DWC_PRINT("HCD State:\n"); + DWC_PRINT(" Num channels: %d\n", num_channels); + for (i = 0; i < num_channels; i++) { + dwc_hc_t * hc = _hcd->hc_ptr_array[i]; + DWC_PRINT(" Channel %d:\n", i); + DWC_PRINT(" dev_addr: %d, ep_num: %d, ep_is_in: %d\n", + hc->dev_addr, hc->ep_num, hc->ep_is_in); + DWC_PRINT(" speed: %d\n", hc->speed); + DWC_PRINT(" ep_type: %d\n", hc->ep_type); + DWC_PRINT(" max_packet: %d\n", hc->max_packet); + DWC_PRINT(" data_pid_start: %d\n", hc->data_pid_start); + DWC_PRINT(" multi_count: %d\n", hc->multi_count); + DWC_PRINT(" xfer_started: %d\n", hc->xfer_started); + DWC_PRINT(" xfer_buff: %p\n", hc->xfer_buff); + DWC_PRINT(" xfer_len: %d\n", hc->xfer_len); + DWC_PRINT(" xfer_count: %d\n", hc->xfer_count); + DWC_PRINT(" halt_on_queue: %d\n", hc->halt_on_queue); + DWC_PRINT(" halt_pending: %d\n", hc->halt_pending); + DWC_PRINT(" halt_status: %d\n", hc->halt_status); + DWC_PRINT(" do_split: %d\n", hc->do_split); + DWC_PRINT(" complete_split: %d\n", hc->complete_split); + DWC_PRINT(" hub_addr: %d\n", hc->hub_addr); + DWC_PRINT(" port_addr: %d\n", hc->port_addr); + DWC_PRINT(" xact_pos: %d\n", hc->xact_pos); + DWC_PRINT(" requests: %d\n", hc->requests); + DWC_PRINT(" qh: %p\n", hc->qh); + if (hc->xfer_started) { + hfnum_data_t hfnum; + hcchar_data_t hcchar; + hctsiz_data_t hctsiz; + hcint_data_t hcint; + hcintmsk_data_t hcintmsk; + hfnum.d32 = + dwc_read_reg32(&_hcd->core_if->host_if-> + host_global_regs->hfnum); + hcchar.d32 = + dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]-> + hcchar); + hctsiz.d32 = + dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]-> + hctsiz); + hcint.d32 = + dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]-> + hcint); + hcintmsk.d32 = + dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]-> + hcintmsk); + DWC_PRINT(" hfnum: 0x%08x\n", hfnum.d32); + DWC_PRINT(" hcchar: 0x%08x\n", hcchar.d32); + DWC_PRINT(" hctsiz: 0x%08x\n", hctsiz.d32); + DWC_PRINT(" hcint: 0x%08x\n", hcint.d32); + DWC_PRINT(" hcintmsk: 0x%08x\n", hcintmsk.d32); + } + if (hc->xfer_started && (hc->qh != NULL) + && (hc->qh->qtd_in_process != NULL)) { + dwc_otg_qtd_t * qtd; + struct urb *urb; + qtd = hc->qh->qtd_in_process; + urb = qtd->urb; + DWC_PRINT(" URB Info:\n"); + DWC_PRINT(" qtd: %p, urb: %p\n", qtd, urb); + if (urb != NULL) { + DWC_PRINT(" Dev: %d, EP: %d %s\n", + usb_pipedevice(urb->pipe), + usb_pipeendpoint(urb->pipe), + usb_pipein(urb-> + pipe) ? "IN" : "OUT"); + DWC_PRINT(" Max packet size: %d\n", + usb_maxpacket(urb->dev, urb->pipe, + usb_pipeout(urb-> + pipe))); + DWC_PRINT(" transfer_buffer: %p\n", + urb->transfer_buffer); + DWC_PRINT(" transfer_dma: %p\n", + (void *)urb->transfer_dma); + DWC_PRINT(" transfer_buffer_length: %d\n", + urb->transfer_buffer_length); + DWC_PRINT(" actual_length: %d\n", + urb->actual_length); + } + } + } DWC_PRINT(" non_periodic_channels: %d\n", + _hcd->non_periodic_channels); + DWC_PRINT(" periodic_channels: %d\n", _hcd->periodic_channels); + DWC_PRINT(" periodic_usecs: %d\n", _hcd->periodic_usecs); + np_tx_status.d32 = + dwc_read_reg32(&_hcd->core_if->core_global_regs->gnptxsts); + DWC_PRINT(" NP Tx Req Queue Space Avail: %d\n", + np_tx_status.b.nptxqspcavail); + DWC_PRINT(" NP Tx FIFO Space Avail: %d\n", + np_tx_status.b.nptxfspcavail); + p_tx_status.d32 = + dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hptxsts); + DWC_PRINT(" P Tx Req Queue Space Avail: %d\n", + p_tx_status.b.ptxqspcavail); + DWC_PRINT(" P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail); + dwc_otg_hcd_dump_frrem(_hcd); + dwc_otg_dump_global_registers(_hcd->core_if); + dwc_otg_dump_host_registers(_hcd->core_if); + DWC_PRINT + ("************************************************************\n"); + DWC_PRINT("\n"); + +#endif /* */ +} +#endif /* DWC_DEVICE_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_hcd.h b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd.h new file mode 100644 index 00000000000..ae2b8c3e179 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd.h @@ -0,0 +1,660 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd.h $ + * $Revision: #6 $ + * $Date: 2006/12/05 $ + * $Change: 762293 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ +#ifndef CONFIG_DWC_DEVICE_ONLY +#if !defined(__DWC_HCD_H__) +#define __DWC_HCD_H__ + +#include <linux/list.h> +#include <linux/usb.h> +#include <../drivers/usb/core/hcd.h> + +struct lm_device; +struct dwc_otg_device; + +#include "dwc_otg_cil.h" + +/** + * @file + * + * This file contains the structures, constants, and interfaces for + * the Host Contoller Driver (HCD). + * + * The Host Controller Driver (HCD) is responsible for translating requests + * from the USB Driver into the appropriate actions on the DWC_otg controller. + * It isolates the USBD from the specifics of the controller by providing an + * API to the USBD. + */ + +/** + * Phases for control transfers. + */ +typedef enum dwc_otg_control_phase { + DWC_OTG_CONTROL_SETUP, + DWC_OTG_CONTROL_DATA, + DWC_OTG_CONTROL_STATUS +} dwc_otg_control_phase_e; + +/** Transaction types. */ +typedef enum dwc_otg_transaction_type { + DWC_OTG_TRANSACTION_NONE, + DWC_OTG_TRANSACTION_PERIODIC, + DWC_OTG_TRANSACTION_NON_PERIODIC, + DWC_OTG_TRANSACTION_ALL +} dwc_otg_transaction_type_e; + +/** + * A Queue Transfer Descriptor (QTD) holds the state of a bulk, control, + * interrupt, or isochronous transfer. A single QTD is created for each URB + * (of one of these types) submitted to the HCD. The transfer associated with + * a QTD may require one or multiple transactions. + * + * A QTD is linked to a Queue Head, which is entered in either the + * non-periodic or periodic schedule for execution. When a QTD is chosen for + * execution, some or all of its transactions may be executed. After + * execution, the state of the QTD is updated. The QTD may be retired if all + * its transactions are complete or if an error occurred. Otherwise, it + * remains in the schedule so more transactions can be executed later. + */ + +struct dwc_otg_qh; + +typedef struct dwc_otg_qtd { + /** + * Determines the PID of the next data packet for the data phase of + * control transfers. Ignored for other transfer types.<br> + * One of the following values: + * - DWC_OTG_HC_PID_DATA0 + * - DWC_OTG_HC_PID_DATA1 + */ + uint8_t data_toggle; + + /** Current phase for control transfers (Setup, Data, or Status). */ + dwc_otg_control_phase_e control_phase; + + /** Keep track of the current split type + * for FS/LS endpoints on a HS Hub */ + uint8_t complete_split; + + /** How many bytes transferred during SSPLIT OUT */ + uint32_t ssplit_out_xfer_count; + + /** + * Holds the number of bus errors that have occurred for a transaction + * within this transfer. + */ + uint8_t error_count; + + /** + * Index of the next frame descriptor for an isochronous transfer. A + * frame descriptor describes the buffer position and length of the + * data to be transferred in the next scheduled (micro)frame of an + * isochronous transfer. It also holds status for that transaction. + * The frame index starts at 0. + */ + int isoc_frame_index; + + /** Position of the ISOC split on full/low speed */ + uint8_t isoc_split_pos; + + /** Position of the ISOC split in the buffer for the current frame */ + uint16_t isoc_split_offset; + + /** URB for this transfer */ + struct urb *urb; + + /** This list of QTDs */ + struct list_head qtd_list_entry; + + /* Field to track the qh pointer */ + struct dwc_otg_qh *qtd_qh_ptr; +} dwc_otg_qtd_t; + +/** + * A Queue Head (QH) holds the static characteristics of an endpoint and + * maintains a list of transfers (QTDs) for that endpoint. A QH structure may + * be entered in either the non-periodic or periodic schedule. + */ +typedef struct dwc_otg_qh { + /** + * Endpoint type. + * One of the following values: + * - USB_ENDPOINT_XFER_CONTROL + * - USB_ENDPOINT_XFER_ISOC + * - USB_ENDPOINT_XFER_BULK + * - USB_ENDPOINT_XFER_INT + */ + uint8_t ep_type; + uint8_t ep_is_in; + + /** wMaxPacketSize Field of Endpoint Descriptor. */ + uint16_t maxp; + + /** + * Determines the PID of the next data packet for non-control + * transfers. Ignored for control transfers.<br> + * One of the following values: + * - DWC_OTG_HC_PID_DATA0 + * - DWC_OTG_HC_PID_DATA1 + */ + uint8_t data_toggle; + + /** Ping state if 1. */ + uint8_t ping_state; + + /** + * List of QTDs for this QH. + */ + struct list_head qtd_list; + + /** Host channel currently processing transfers for this QH. */ + dwc_hc_t *channel; + + /** QTD currently assigned to a host channel for this QH. */ + dwc_otg_qtd_t *qtd_in_process; + + /** Full/low speed endpoint on high-speed hub requires split. */ + uint8_t do_split; + + /** @name Periodic schedule information */ + /** @{ */ + + /** Bandwidth in microseconds per (micro)frame. */ + uint8_t usecs; + + /** Interval between transfers in (micro)frames. */ + uint16_t interval; + + /** + * (micro)frame to initialize a periodic transfer. The transfer + * executes in the following (micro)frame. + */ + uint16_t sched_frame; + + /** (micro)frame at which last start split was initialized. */ + uint16_t start_split_frame; + + /** @} */ + + /** Entry for QH in either the periodic or non-periodic schedule. */ + struct list_head qh_list_entry; +} dwc_otg_qh_t; + +/** + * This structure holds the state of the HCD, including the non-periodic and + * periodic schedules. + */ +typedef struct dwc_otg_hcd { + + spinlock_t lock; + + /** DWC OTG Core Interface Layer */ + dwc_otg_core_if_t *core_if; + + /** Internal DWC HCD Flags */ + volatile union dwc_otg_hcd_internal_flags { + uint32_t d32; + struct { + unsigned port_connect_status_change : 1; + unsigned port_connect_status : 1; + unsigned port_reset_change : 1; + unsigned port_enable_change : 1; + unsigned port_suspend_change : 1; + unsigned port_over_current_change : 1; + unsigned reserved : 27; + } b; + } flags; + + /** + * Inactive items in the non-periodic schedule. This is a list of + * Queue Heads. Transfers associated with these Queue Heads are not + * currently assigned to a host channel. + */ + struct list_head non_periodic_sched_inactive; + + /** + * Deferred items in the non-periodic schedule. This is a list of + * Queue Heads. Transfers associated with these Queue Heads are not + * currently assigned to a host channel. + * When we get an NAK, the QH goes here. + */ + struct list_head non_periodic_sched_deferred; + + /** + * Active items in the non-periodic schedule. This is a list of + * Queue Heads. Transfers associated with these Queue Heads are + * currently assigned to a host channel. + */ + struct list_head non_periodic_sched_active; + + /** + * Pointer to the next Queue Head to process in the active + * non-periodic schedule. + */ + struct list_head *non_periodic_qh_ptr; + + /** + * Inactive items in the periodic schedule. This is a list of QHs for + * periodic transfers that are _not_ scheduled for the next frame. + * Each QH in the list has an interval counter that determines when it + * needs to be scheduled for execution. This scheduling mechanism + * allows only a simple calculation for periodic bandwidth used (i.e. + * must assume that all periodic transfers may need to execute in the + * same frame). However, it greatly simplifies scheduling and should + * be sufficient for the vast majority of OTG hosts, which need to + * connect to a small number of peripherals at one time. + * + * Items move from this list to periodic_sched_ready when the QH + * interval counter is 0 at SOF. + */ + struct list_head periodic_sched_inactive; + + /** + * List of periodic QHs that are ready for execution in the next + * frame, but have not yet been assigned to host channels. + * + * Items move from this list to periodic_sched_assigned as host + * channels become available during the current frame. + */ + struct list_head periodic_sched_ready; + + /** + * List of periodic QHs to be executed in the next frame that are + * assigned to host channels. + * + * Items move from this list to periodic_sched_queued as the + * transactions for the QH are queued to the DWC_otg controller. + */ + struct list_head periodic_sched_assigned; + + /** + * List of periodic QHs that have been queued for execution. + * + * Items move from this list to either periodic_sched_inactive or + * periodic_sched_ready when the channel associated with the transfer + * is released. If the interval for the QH is 1, the item moves to + * periodic_sched_ready because it must be rescheduled for the next + * frame. Otherwise, the item moves to periodic_sched_inactive. + */ + struct list_head periodic_sched_queued; + + /** + * Total bandwidth claimed so far for periodic transfers. This value + * is in microseconds per (micro)frame. The assumption is that all + * periodic transfers may occur in the same (micro)frame. + */ + uint16_t periodic_usecs; + + /** + * Frame number read from the core at SOF. The value ranges from 0 to + * DWC_HFNUM_MAX_FRNUM. + */ + uint16_t frame_number; + + /** + * Free host channels in the controller. This is a list of + * dwc_hc_t items. + */ + struct list_head free_hc_list; + + /** + * Number of host channels assigned to periodic transfers. Currently + * assuming that there is a dedicated host channel for each periodic + * transaction and at least one host channel available for + * non-periodic transactions. + */ + int periodic_channels; + + /** + * Number of host channels assigned to non-periodic transfers. + */ + int non_periodic_channels; + + /** + * Array of pointers to the host channel descriptors. Allows accessing + * a host channel descriptor given the host channel number. This is + * useful in interrupt handlers. + */ + dwc_hc_t *hc_ptr_array[MAX_EPS_CHANNELS]; + + /** + * Buffer to use for any data received during the status phase of a + * control transfer. Normally no data is transferred during the status + * phase. This buffer is used as a bit bucket. + */ + uint8_t *status_buf; + + /** + * DMA address for status_buf. + */ + dma_addr_t status_buf_dma; +#define DWC_OTG_HCD_STATUS_BUF_SIZE 64 + + /** + * Structure to allow starting the HCD in a non-interrupt context + * during an OTG role change. + */ + struct work_struct start_work; + struct usb_hcd *_p; + + /** + * Connection timer. An OTG host must display a message if the device + * does not connect. Started when the VBus power is turned on via + * sysfs attribute "buspower". + */ + struct timer_list conn_timer; + + /* Tasket to do a reset */ + struct tasklet_struct *reset_tasklet; + +#ifdef CONFIG_DWC_DEBUG + uint32_t frrem_samples; + uint64_t frrem_accum; + + uint32_t hfnum_7_samples_a; + uint64_t hfnum_7_frrem_accum_a; + uint32_t hfnum_0_samples_a; + uint64_t hfnum_0_frrem_accum_a; + uint32_t hfnum_other_samples_a; + uint64_t hfnum_other_frrem_accum_a; + + uint32_t hfnum_7_samples_b; + uint64_t hfnum_7_frrem_accum_b; + uint32_t hfnum_0_samples_b; + uint64_t hfnum_0_frrem_accum_b; + uint32_t hfnum_other_samples_b; + uint64_t hfnum_other_frrem_accum_b; +#endif + +} dwc_otg_hcd_t; + +/** Gets the dwc_otg_hcd from a struct usb_hcd */ +static inline dwc_otg_hcd_t *hcd_to_dwc_otg_hcd(struct usb_hcd *hcd) +{ + return (dwc_otg_hcd_t *)(hcd->hcd_priv); +} + +/** Gets the struct usb_hcd that contains a dwc_otg_hcd_t. */ +static inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t *dwc_otg_hcd) +{ + return container_of((void *)dwc_otg_hcd, struct usb_hcd, hcd_priv); +} + +/** @name HCD Create/Destroy Functions */ +/** @{ */ +extern int __init dwc_otg_hcd_init(struct device *_dev, dwc_otg_device_t * dwc_otg_device); +extern void dwc_otg_hcd_remove(struct device *_dev); +/** @} */ + +/** @name Linux HC Driver API Functions */ +/** @{ */ + +extern int dwc_otg_hcd_start(struct usb_hcd *hcd); +extern void dwc_otg_hcd_stop(struct usb_hcd *hcd); +extern int dwc_otg_hcd_get_frame_number(struct usb_hcd *hcd); +extern void dwc_otg_hcd_free(struct usb_hcd *hcd); +extern int dwc_otg_hcd_urb_enqueue(struct usb_hcd *hcd, + struct urb *urb, + gfp_t mem_flags); +extern int dwc_otg_hcd_urb_dequeue(struct usb_hcd *hcd, +/* struct usb_host_endpoint *ep,*/ + struct urb *urb, int status); +extern void dwc_otg_hcd_endpoint_disable(struct usb_hcd *hcd, + struct usb_host_endpoint *ep); +extern irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd); +extern int dwc_otg_hcd_hub_status_data(struct usb_hcd *hcd, + char *buf); +extern int dwc_otg_hcd_hub_control(struct usb_hcd *hcd, + u16 typeReq, + u16 wValue, + u16 wIndex, + char *buf, + u16 wLength); + +/** @} */ + +/** @name Transaction Execution Functions */ +/** @{ */ +extern dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t *_hcd); +extern void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t *_hcd, + dwc_otg_transaction_type_e _tr_type); +extern void dwc_otg_hcd_complete_urb(dwc_otg_hcd_t *_hcd, struct urb *_urb, + int _status); +/** @} */ + +/** @name Interrupt Handler Functions */ +/** @{ */ +extern int32_t dwc_otg_hcd_handle_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_sof_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_rx_status_q_level_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_incomplete_periodic_intr(dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_port_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_conn_id_status_change_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_disconnect_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_hc_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_hc_n_intr (dwc_otg_hcd_t *_dwc_otg_hcd, uint32_t _num); +extern int32_t dwc_otg_hcd_handle_session_req_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +extern int32_t dwc_otg_hcd_handle_wakeup_detected_intr (dwc_otg_hcd_t *_dwc_otg_hcd); +/** @} */ + + +/** @name Schedule Queue Functions */ +/** @{ */ + +/* Implemented in dwc_otg_hcd_queue.c */ +extern dwc_otg_qh_t *dwc_otg_hcd_qh_create (dwc_otg_hcd_t *_hcd, struct urb *_urb); +extern void dwc_otg_hcd_qh_init (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, struct urb *_urb); +extern void dwc_otg_hcd_qh_free (dwc_otg_qh_t *_qh); +extern int dwc_otg_hcd_qh_add (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh); +extern void dwc_otg_hcd_qh_remove (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh); +extern void dwc_otg_hcd_qh_deactivate (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, int sched_csplit); +extern int dwc_otg_hcd_qh_deferr (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, int delay); + +/** Remove and free a QH */ +static inline void dwc_otg_hcd_qh_remove_and_free (dwc_otg_hcd_t *_hcd, + dwc_otg_qh_t *_qh) +{ + dwc_otg_hcd_qh_remove (_hcd, _qh); + dwc_otg_hcd_qh_free (_qh); +} + +/** Allocates memory for a QH structure. + * @return Returns the memory allocate or NULL on error. */ +static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc (void) +{ + return (dwc_otg_qh_t *) kmalloc (sizeof(dwc_otg_qh_t), GFP_KERNEL); +} + +extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create (struct urb *urb); +extern void dwc_otg_hcd_qtd_init (dwc_otg_qtd_t *qtd, struct urb *urb); +extern int dwc_otg_hcd_qtd_add (dwc_otg_qtd_t *qtd, dwc_otg_hcd_t *dwc_otg_hcd); + +/** Allocates memory for a QTD structure. + * @return Returns the memory allocate or NULL on error. */ +static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc (void) +{ + return (dwc_otg_qtd_t *) kmalloc (sizeof(dwc_otg_qtd_t), GFP_KERNEL); +} + +/** Frees the memory for a QTD structure. QTD should already be removed from + * list. + * @param[in] _qtd QTD to free.*/ +static inline void dwc_otg_hcd_qtd_free (dwc_otg_qtd_t *_qtd) +{ + kfree (_qtd); +} + +/** Removes a QTD from list. + * @param[in] _qtd QTD to remove from list. */ +static inline void dwc_otg_hcd_qtd_remove (dwc_otg_qtd_t *_qtd) +{ + unsigned long flags; + local_irq_save (flags); + list_del (&_qtd->qtd_list_entry); + local_irq_restore (flags); +} + +/** Remove and free a QTD */ +static inline void dwc_otg_hcd_qtd_remove_and_free (dwc_otg_qtd_t *_qtd) +{ + dwc_otg_hcd_qtd_remove (_qtd); + dwc_otg_hcd_qtd_free (_qtd); +} + +/** @} */ + + +/** @name Internal Functions */ +/** @{ */ +dwc_otg_qh_t *dwc_urb_to_qh(struct urb *_urb); +void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t *_hcd); +void dwc_otg_hcd_dump_state(dwc_otg_hcd_t *_hcd); +/** @} */ + +/** Gets the usb_host_endpoint associated with an URB. */ +static inline struct usb_host_endpoint *dwc_urb_to_endpoint(struct urb *_urb) +{ + struct usb_device *dev = _urb->dev; + int ep_num = usb_pipeendpoint(_urb->pipe); + + if (usb_pipein(_urb->pipe)) + return dev->ep_in[ep_num]; + else + return dev->ep_out[ep_num]; +} + +/** + * Gets the endpoint number from a _bEndpointAddress argument. The endpoint is + * qualified with its direction (possible 32 endpoints per device). + */ +#define dwc_ep_addr_to_endpoint(_bEndpointAddress_) \ + ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \ + ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4) + +/** Gets the QH that contains the list_head */ +#define dwc_list_to_qh(_list_head_ptr_) (container_of(_list_head_ptr_,dwc_otg_qh_t,qh_list_entry)) + +/** Gets the QTD that contains the list_head */ +#define dwc_list_to_qtd(_list_head_ptr_) (container_of(_list_head_ptr_,dwc_otg_qtd_t,qtd_list_entry)) + +/** Check if QH is non-periodic */ +#define dwc_qh_is_non_per(_qh_ptr_) ((_qh_ptr_->ep_type == USB_ENDPOINT_XFER_BULK) || \ + (_qh_ptr_->ep_type == USB_ENDPOINT_XFER_CONTROL)) + +/** High bandwidth multiplier as encoded in highspeed endpoint descriptors */ +#define dwc_hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03)) + +/** Packet size for any kind of endpoint descriptor */ +#define dwc_max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) + +/** + * Returns true if _frame1 is less than or equal to _frame2. The comparison is + * done modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the + * frame number when the max frame number is reached. + */ +static inline int dwc_frame_num_le(uint16_t _frame1, uint16_t _frame2) +{ + return ((_frame2 - _frame1) & DWC_HFNUM_MAX_FRNUM) <= + (DWC_HFNUM_MAX_FRNUM >> 1); +} + +/** + * Returns true if _frame1 is greater than _frame2. The comparison is done + * modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the frame + * number when the max frame number is reached. + */ +static inline int dwc_frame_num_gt(uint16_t _frame1, uint16_t _frame2) +{ + return (_frame1 != _frame2) && + (((_frame1 - _frame2) & DWC_HFNUM_MAX_FRNUM) < + (DWC_HFNUM_MAX_FRNUM >> 1)); +} + +/** + * Increments _frame by the amount specified by _inc. The addition is done + * modulo DWC_HFNUM_MAX_FRNUM. Returns the incremented value. + */ +static inline uint16_t dwc_frame_num_inc(uint16_t _frame, uint16_t _inc) +{ + return (_frame + _inc) & DWC_HFNUM_MAX_FRNUM; +} + +static inline uint16_t dwc_full_frame_num (uint16_t _frame) +{ + return ((_frame) & DWC_HFNUM_MAX_FRNUM) >> 3; +} + +static inline uint16_t dwc_micro_frame_num (uint16_t _frame) +{ + return (_frame) & 0x7; +} + +#ifdef CONFIG_DWC_DEBUG +/** + * Macro to sample the remaining PHY clocks left in the current frame. This + * may be used during debugging to determine the average time it takes to + * execute sections of code. There are two possible sample points, "a" and + * "b", so the _letter argument must be one of these values. + * + * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For + * example, "cat /sys/devices/lm0/hcd_frrem". + */ +#define dwc_sample_frrem(_hcd, _qh, _letter) \ +{ \ + hfnum_data_t hfnum; \ + dwc_otg_qtd_t *qtd; \ + qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); \ + if (usb_pipeint(qtd->urb->pipe) && _qh->start_split_frame != 0 && !qtd->complete_split) { \ + hfnum.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hfnum); \ + switch (hfnum.b.frnum & 0x7) { \ + case 7: \ + _hcd->hfnum_7_samples_##_letter++; \ + _hcd->hfnum_7_frrem_accum_##_letter += hfnum.b.frrem; \ + break; \ + case 0: \ + _hcd->hfnum_0_samples_##_letter++; \ + _hcd->hfnum_0_frrem_accum_##_letter += hfnum.b.frrem; \ + break; \ + default: \ + _hcd->hfnum_other_samples_##_letter++; \ + _hcd->hfnum_other_frrem_accum_##_letter += hfnum.b.frrem; \ + break; \ + } \ + } \ +} +#else +#define dwc_sample_frrem(_hcd, _qh, _letter) +#endif +#endif +#endif /* DWC_DEVICE_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd_intr.c new file mode 100644 index 00000000000..39a995f9948 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd_intr.c @@ -0,0 +1,1746 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_intr.c $ + * $Revision: #7 $ + * $Date: 2005/11/02 $ + * $Change: 553126 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#ifndef CONFIG_DWC_DEVICE_ONLY + +#include "dwc_otg_driver.h" +#include "dwc_otg_hcd.h" +#include "dwc_otg_regs.h" + +const int erratum_usb09_patched = 0; +const int deferral_on = 1; +int nak_deferral_delay = 20; +module_param(nak_deferral_delay, int, 0644); +const int nyet_deferral_delay = 1; + +/** @file + * This file contains the implementation of the HCD Interrupt handlers. + */ + +/** This function handles interrupts for the HCD. */ +int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * _dwc_otg_hcd) +{ + int retval = 0; + dwc_otg_core_if_t * core_if = _dwc_otg_hcd->core_if; + gintsts_data_t gintsts; + +#ifdef CONFIG_DWC_DEBUG + dwc_otg_core_global_regs_t * global_regs = core_if->core_global_regs; + +#endif /* */ + + /* Check if HOST Mode */ + if (dwc_otg_is_host_mode(core_if)) { + gintsts.d32 = dwc_otg_read_core_intr(core_if); + if (!gintsts.d32) { + return 0; + } +#ifdef CONFIG_DWC_DEBUG + /* Don't print debug message in the interrupt handler on SOF */ +#ifndef DEBUG_SOF + if (gintsts.d32 != DWC_SOF_INTR_MASK) +#endif + DWC_DEBUGPL(DBG_HCD, "\n"); +#endif /* */ + +#ifdef CONFIG_DWC_DEBUG +#ifndef DEBUG_SOF + if (gintsts.d32 != DWC_SOF_INTR_MASK) +#endif + DWC_DEBUGPL(DBG_HCD,"DWC OTG HCD Interrupt Detected gintsts&gintmsk=0x%08x\n", + gintsts.d32); +#endif /* */ + if (gintsts.b.sofintr) { + retval |= dwc_otg_hcd_handle_sof_intr(_dwc_otg_hcd); + } +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + if (!atomic_read(&release_later) && gintsts.b.rxstsqlvl) { +#else + if (gintsts.b.rxstsqlvl) { +#endif + retval |= dwc_otg_hcd_handle_rx_status_q_level_intr(_dwc_otg_hcd); + } +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + if (!atomic_read(&release_later) && gintsts.b.nptxfempty) { +#else + if (gintsts.b.nptxfempty) { +#endif + retval |= dwc_otg_hcd_handle_np_tx_fifo_empty_intr(_dwc_otg_hcd); + } + if (gintsts.b.i2cintr) { + /** @todo Implement i2cintr handler. */ + } + if (gintsts.b.portintr) { + retval |= dwc_otg_hcd_handle_port_intr(_dwc_otg_hcd); + } + if (gintsts.b.hcintr) { + retval |= dwc_otg_hcd_handle_hc_intr(_dwc_otg_hcd); + } + if (gintsts.b.ptxfempty) { + retval |= dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(_dwc_otg_hcd); + } + +#ifdef CONFIG_DWC_DEBUG +#ifndef DEBUG_SOF + if (gintsts.d32 != DWC_SOF_INTR_MASK) +#endif + { + DWC_DEBUGPL(DBG_HCD, + "DWC OTG HCD Finished Servicing Interrupts\n"); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintsts=0x%08x\n", + dwc_read_reg32(&global_regs->gintsts)); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintmsk=0x%08x\n", + dwc_read_reg32(&global_regs->gintmsk)); + } +#endif /* */ + +#ifdef CONFIG_DWC_DEBUG +#ifndef DEBUG_SOF + if (gintsts.d32 != DWC_SOF_INTR_MASK) +#endif + DWC_DEBUGPL(DBG_HCD, "\n"); +#endif /* */ + } + return retval; +} + + +#ifdef DWC_TRACK_MISSED_SOFS +#warning Compiling code to track missed SOFs +#define FRAME_NUM_ARRAY_SIZE 1000 +/** + * This function is for debug only. + */ +static inline void track_missed_sofs(uint16_t _curr_frame_number) +{ + static uint16_t frame_num_array[FRAME_NUM_ARRAY_SIZE]; + static uint16_t last_frame_num_array[FRAME_NUM_ARRAY_SIZE]; + static int frame_num_idx = 0; + static uint16_t last_frame_num = DWC_HFNUM_MAX_FRNUM; + static int dumped_frame_num_array = 0; + if (frame_num_idx < FRAME_NUM_ARRAY_SIZE) { + if ((((last_frame_num + 1) & DWC_HFNUM_MAX_FRNUM) != + _curr_frame_number)) { + frame_num_array[frame_num_idx] = _curr_frame_number; + last_frame_num_array[frame_num_idx++] = last_frame_num; + } + } else if (!dumped_frame_num_array) { + int i; + printk(KERN_EMERG USB_DWC "Frame Last Frame\n"); + printk(KERN_EMERG USB_DWC "----- ----------\n"); + for (i = 0; i < FRAME_NUM_ARRAY_SIZE; i++) { + printk(KERN_EMERG USB_DWC "0x%04x 0x%04x\n", + frame_num_array[i], last_frame_num_array[i]); + } + dumped_frame_num_array = 1; + } + last_frame_num = _curr_frame_number; +} +#endif /* */ + +/** + * Handles the start-of-frame interrupt in host mode. Non-periodic + * transactions may be queued to the DWC_otg controller for the current + * (micro)frame. Periodic transactions may be queued to the controller for the + * next (micro)frame. + */ +int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * _hcd) +{ + hfnum_data_t hfnum; + struct list_head *qh_entry; + dwc_otg_qh_t * qh; + dwc_otg_transaction_type_e tr_type; + gintsts_data_t gintsts = {.d32 = 0}; + hfnum.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hfnum); + +#ifdef DEBUG_SOF + DWC_DEBUGPL(DBG_HCD, "--Start of Frame Interrupt--\n"); +#endif /* */ + _hcd->frame_number = hfnum.b.frnum; +#ifdef CONFIG_DWC_DEBUG + _hcd->frrem_accum += hfnum.b.frrem; + _hcd->frrem_samples++; +#endif /* */ + +#ifdef DWC_TRACK_MISSED_SOFS + track_missed_sofs(_hcd->frame_number); +#endif /* */ + + /* Determine whether any periodic QHs should be executed. */ + qh_entry = _hcd->periodic_sched_inactive.next; + while (qh_entry != &_hcd->periodic_sched_inactive) { + qh = list_entry(qh_entry, dwc_otg_qh_t, qh_list_entry); + qh_entry = qh_entry->next; + if (dwc_frame_num_le(qh->sched_frame, _hcd->frame_number)) { + /* + * Move QH to the ready list to be executed next + * (micro)frame. + */ + list_move(&qh->qh_list_entry,&_hcd->periodic_sched_ready); + } + } + tr_type = dwc_otg_hcd_select_transactions(_hcd); + if (tr_type != DWC_OTG_TRANSACTION_NONE) { + dwc_otg_hcd_queue_transactions(_hcd, tr_type); + //schedule_work(&_hcd->hcd_queue_work); + } + + /* Clear interrupt */ + gintsts.b.sofintr = 1; + dwc_write_reg32(&_hcd->core_if->core_global_regs->gintsts,gintsts.d32); + return 1; +} + +/** Handles the Rx Status Queue Level Interrupt, which indicates that there is at + * least one packet in the Rx FIFO. The packets are moved from the FIFO to + * memory if the DWC_otg controller is operating in Slave mode. */ +int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t *_dwc_otg_hcd) +{ + host_grxsts_data_t grxsts; + dwc_hc_t * hc = NULL; + DWC_DEBUGPL(DBG_HCD, "--RxStsQ Level Interrupt--\n"); + grxsts.d32 = dwc_read_reg32(&_dwc_otg_hcd->core_if->core_global_regs->grxstsp); + hc = _dwc_otg_hcd->hc_ptr_array[grxsts.b.chnum]; + + /* Packet Status */ + DWC_DEBUGPL(DBG_HCDV, " Ch num = %d\n", grxsts.b.chnum); + DWC_DEBUGPL(DBG_HCDV, " Count = %d\n", grxsts.b.bcnt); + DWC_DEBUGPL(DBG_HCDV, " DPID = %d, hc.dpid = %d\n", grxsts.b.dpid, + hc->data_pid_start); + DWC_DEBUGPL(DBG_HCDV, " PStatus = %d\n", grxsts.b.pktsts); + switch (grxsts.b.pktsts) { + case DWC_GRXSTS_PKTSTS_IN: + /* Read the data into the host buffer. */ + if (grxsts.b.bcnt > 0) { + dwc_otg_read_packet(_dwc_otg_hcd->core_if, + hc->xfer_buff, grxsts.b.bcnt); + + /* Update the HC fields for the next packet received. */ + hc->xfer_count += grxsts.b.bcnt; + hc->xfer_buff += grxsts.b.bcnt; + } + case DWC_GRXSTS_PKTSTS_IN_XFER_COMP: + case DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR: + case DWC_GRXSTS_PKTSTS_CH_HALTED: + /* Handled in interrupt, just ignore data */ + break; + default: + DWC_ERROR("RX_STS_Q Interrupt: Unknown status %d\n", + grxsts.b.pktsts); + break; + } + return 1; +} + + +/** This interrupt occurs when the non-periodic Tx FIFO is half-empty. More + * data packets may be written to the FIFO for OUT transfers. More requests + * may be written to the non-periodic request queue for IN transfers. This + * interrupt is enabled only in Slave mode. */ +int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t * + _dwc_otg_hcd) +{ + DWC_DEBUGPL(DBG_HCD, "--Non-Periodic TxFIFO Empty Interrupt--\n"); + dwc_otg_hcd_queue_transactions(_dwc_otg_hcd, + DWC_OTG_TRANSACTION_NON_PERIODIC); + //schedule_work(&_dwc_otg_hcd->hcd_queue_work); + return 1; +} + + +/** This interrupt occurs when the periodic Tx FIFO is half-empty. More data + * packets may be written to the FIFO for OUT transfers. More requests may be + * written to the periodic request queue for IN transfers. This interrupt is + * enabled only in Slave mode. */ +int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t * + _dwc_otg_hcd) +{ + DWC_DEBUGPL(DBG_HCD, "--Periodic TxFIFO Empty Interrupt--\n"); + dwc_otg_hcd_queue_transactions(_dwc_otg_hcd, + DWC_OTG_TRANSACTION_PERIODIC); + //schedule_work(&_dwc_otg_hcd->hcd_queue_work); + return 1; +} + + +/** There are multiple conditions that can cause a port interrupt. This function + * determines which interrupt conditions have occurred and handles them + * appropriately. */ +int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * _dwc_otg_hcd) +{ + int retval = 0; + hprt0_data_t hprt0; + hprt0_data_t hprt0_modify; + hprt0.d32 = dwc_read_reg32(_dwc_otg_hcd->core_if->host_if->hprt0); + hprt0_modify.d32 = dwc_read_reg32(_dwc_otg_hcd->core_if->host_if->hprt0); + + /* Clear appropriate bits in HPRT0 to clear the interrupt bit in + * GINTSTS */ + hprt0_modify.b.prtena = 0; + hprt0_modify.b.prtconndet = 0; + hprt0_modify.b.prtenchng = 0; + hprt0_modify.b.prtovrcurrchng = 0; + + /* Port Connect Detected + * Set flag and clear if detected */ + if (hprt0.b.prtconndet) { + DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x " + "Port Connect Detected--\n", hprt0.d32); + _dwc_otg_hcd->flags.b.port_connect_status_change = 1; + _dwc_otg_hcd->flags.b.port_connect_status = 1; + hprt0_modify.b.prtconndet = 1; + + /* B-Device has connected, Delete the connection timer. */ + del_timer(&_dwc_otg_hcd->conn_timer); + + /* The Hub driver asserts a reset when it sees port connect + * status change flag + */ + retval |= 1; + } + + /* Port Enable Changed + * Clear if detected - Set internal flag if disabled */ + if (hprt0.b.prtenchng) { + DWC_DEBUGPL(DBG_HCD, " --Port Interrupt HPRT0=0x%08x " + "Port Enable Changed--\n", hprt0.d32); + hprt0_modify.b.prtenchng = 1; + if (hprt0.b.prtena == 1) { + int do_reset = 0; + dwc_otg_core_params_t * params = + _dwc_otg_hcd->core_if->core_params; + dwc_otg_core_global_regs_t * global_regs = + _dwc_otg_hcd->core_if->core_global_regs; + dwc_otg_host_if_t * host_if = + _dwc_otg_hcd->core_if->host_if; + + /* Check if we need to adjust the PHY clock speed for + * low power and adjust it */ + if (params->host_support_fs_ls_low_power) { + gusbcfg_data_t usbcfg; + usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + if ((hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED) || + (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED)) { + /* + * Low power + */ + hcfg_data_t hcfg; + if (usbcfg.b.phylpwrclksel == 0) { + /* Set PHY low power clock select for FS/LS devices */ + usbcfg.b.phylpwrclksel = 1; + dwc_write_reg32(&global_regs->gusbcfg,usbcfg.d32); + do_reset = 1; + } + hcfg.d32 = dwc_read_reg32(&host_if->host_global_regs->hcfg); + if ((hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED) && + (params->host_ls_low_power_phy_clk == + DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)) { + /* 6 MHZ */ + DWC_DEBUGPL(DBG_CIL,"FS_PHY programming HCFG to 6 MHz (Low Power)\n"); + if (hcfg.b.fslspclksel != DWC_HCFG_6_MHZ) { + hcfg.b.fslspclksel = DWC_HCFG_6_MHZ; + dwc_write_reg32(&host_if->host_global_regs->hcfg, hcfg.d32); + do_reset = 1; + } + } else { + /* 48 MHZ */ + DWC_DEBUGPL(DBG_CIL, "FS_PHY programming HCFG to 48 MHz ()\n"); + if (hcfg.b.fslspclksel != DWC_HCFG_48_MHZ) { + hcfg.b.fslspclksel = DWC_HCFG_48_MHZ; + dwc_write_reg32(&host_if->host_global_regs->hcfg, hcfg.d32); + do_reset = 1; + } + } + } else { + /* + * Not low power + */ + if (usbcfg.b.phylpwrclksel == 1) { + usbcfg.b.phylpwrclksel = 0; + dwc_write_reg32(&global_regs->gusbcfg,usbcfg.d32); + do_reset = 1; + } + } + if (do_reset) { + tasklet_schedule(_dwc_otg_hcd->reset_tasklet); + } + } + if (!do_reset) { + /* Port has been enabled set the reset change flag */ + _dwc_otg_hcd->flags.b.port_reset_change = 1; + } + } else { + _dwc_otg_hcd->flags.b.port_enable_change = 1; + } + retval |= 1; + } + + /** Overcurrent Change Interrupt */ + if (hprt0.b.prtovrcurrchng) { + DWC_DEBUGPL(DBG_HCD, " --Port Interrupt HPRT0=0x%08x " + "Port Overcurrent Changed--\n", hprt0.d32); + _dwc_otg_hcd->flags.b.port_over_current_change = 1; + hprt0_modify.b.prtovrcurrchng = 1; + retval |= 1; + } + + /* Clear Port Interrupts */ + dwc_write_reg32(_dwc_otg_hcd->core_if->host_if->hprt0,hprt0_modify.d32); + return retval; +} + +/** This interrupt indicates that one or more host channels has a pending + * interrupt. There are multiple conditions that can cause each host channel + * interrupt. This function determines which conditions have occurred for each + * host channel interrupt and handles them appropriately. */ +int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * _dwc_otg_hcd) +{ + int i; + int retval = 0; + haint_data_t haint; + + /* Clear appropriate bits in HCINTn to clear the interrupt bit in + * GINTSTS */ + haint.d32 = dwc_otg_read_host_all_channels_intr(_dwc_otg_hcd->core_if); + for (i = 0; i < _dwc_otg_hcd->core_if->core_params->host_channels;i++) { + if (haint.b2.chint & (1 << i)) { + retval |= dwc_otg_hcd_handle_hc_n_intr(_dwc_otg_hcd, i); + } + } + return retval; +} + +/* Macro used to clear one channel interrupt */ +#define clear_hc_int(_hc_regs_,_intr_) \ + do { \ + hcint_data_t hcint_clear = { .d32 = 0}; \ + hcint_clear.b._intr_ = 1; \ + dwc_write_reg32(&((_hc_regs_)->hcint), hcint_clear.d32); \ + } while (0) + +/* + * Macro used to disable one channel interrupt. Channel interrupts are + * disabled when the channel is halted or released by the interrupt handler. + * There is no need to handle further interrupts of that type until the + * channel is re-assigned. In fact, subsequent handling may cause crashes + * because the channel structures are cleaned up when the channel is released. + */ +#define disable_hc_int(_hc_regs_,_intr_) \ + do { \ + hcintmsk_data_t hcintmsk = {.d32 = 0}; \ + hcintmsk.b._intr_ = 1; \ + dwc_modify_reg32(&((_hc_regs_)->hcintmsk), hcintmsk.d32, 0); \ + } while (0) + +/** + * Gets the actual length of a transfer after the transfer halts. _halt_status + * holds the reason for the halt. + * + * For IN transfers where _halt_status is DWC_OTG_HC_XFER_COMPLETE, + * *_short_read is set to 1 upon return if less than the requested + * number of bytes were transferred. Otherwise, *_short_read is set to 0 upon + * return. _short_read may also be NULL on entry, in which case it remains + * unchanged. + */ +static uint32_t get_actual_xfer_length(dwc_hc_t * _hc, + dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, + dwc_otg_halt_status_e _halt_status, int *_short_read) +{ + hctsiz_data_t hctsiz; + uint32_t length; + if (_short_read != NULL) { + *_short_read = 0; + } + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + if (_halt_status == DWC_OTG_HC_XFER_COMPLETE) { + if (_hc->ep_is_in) { + length = _hc->xfer_len - hctsiz.b.xfersize; + if (_short_read != NULL) { + *_short_read = (hctsiz.b.xfersize != 0); + } + } else if (_hc->qh->do_split) { + length = _qtd->ssplit_out_xfer_count; + } else { + length = _hc->xfer_len; + } + } else { + /* + * Must use the hctsiz.pktcnt field to determine how much data + * has been transferred. This field reflects the number of + * packets that have been transferred via the USB. This is + * always an integral number of packets if the transfer was + * halted before its normal completion. (Can't use the + * hctsiz.xfersize field because that reflects the number of + * bytes transferred via the AHB, not the USB). + */ + length = (_hc->start_pkt_count - hctsiz.b.pktcnt) * _hc->max_packet; + } + return length; +} + +/** + * Updates the state of the URB after a Transfer Complete interrupt on the + * host channel. Updates the actual_length field of the URB based on the + * number of bytes transferred via the host channel. Sets the URB status + * if the data transfer is finished. + * + * @return 1 if the data transfer specified by the URB is completely finished, + * 0 otherwise. + */ +static int update_urb_state_xfer_comp(dwc_hc_t * _hc, + dwc_otg_hc_regs_t * _hc_regs, struct urb *_urb, + dwc_otg_qtd_t * _qtd, int *status) +{ + int xfer_done = 0; + int short_read = 0; + _urb->actual_length += get_actual_xfer_length(_hc, _hc_regs, _qtd, + DWC_OTG_HC_XFER_COMPLETE, &short_read); + if (short_read || (_urb->actual_length == _urb->transfer_buffer_length)) { + xfer_done = 1; + if (short_read && (_urb->transfer_flags & URB_SHORT_NOT_OK)) { + *status = -EREMOTEIO; + } else { + *status = 0; + } + } + +#ifdef CONFIG_DWC_DEBUG + { + hctsiz_data_t hctsiz; + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n", + __func__, (_hc->ep_is_in ? "IN" : "OUT"), _hc->hc_num); + DWC_DEBUGPL(DBG_HCDV, " hc->xfer_len %d\n", _hc->xfer_len); + DWC_DEBUGPL(DBG_HCDV, " hctsiz.xfersize %d\n",hctsiz.b.xfersize); + DWC_DEBUGPL(DBG_HCDV, " urb->transfer_buffer_length %d\n", + _urb->transfer_buffer_length); + DWC_DEBUGPL(DBG_HCDV, " urb->actual_length %d\n", + _urb->actual_length); + DWC_DEBUGPL(DBG_HCDV, " short_read %d, xfer_done %d\n", + short_read, xfer_done); + } +#endif /* */ + return xfer_done; +} + +/* + * Save the starting data toggle for the next transfer. The data toggle is + * saved in the QH for non-control transfers and it's saved in the QTD for + * control transfers. + */ +static void save_data_toggle(dwc_hc_t * _hc, + dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd) +{ + hctsiz_data_t hctsiz; + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + if (_hc->ep_type != DWC_OTG_EP_TYPE_CONTROL) { + dwc_otg_qh_t * qh = _hc->qh; + if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) { + qh->data_toggle = DWC_OTG_HC_PID_DATA0; + } else { + qh->data_toggle = DWC_OTG_HC_PID_DATA1; + } + } else { + if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) { + _qtd->data_toggle = DWC_OTG_HC_PID_DATA0; + } else { + _qtd->data_toggle = DWC_OTG_HC_PID_DATA1; + } + } +} + +/** + * Frees the first QTD in the QH's list if free_qtd is 1. For non-periodic + * QHs, removes the QH from the active non-periodic schedule. If any QTDs are + * still linked to the QH, the QH is added to the end of the inactive + * non-periodic schedule. For periodic QHs, removes the QH from the periodic + * schedule if no more QTDs are linked to the QH. + */ +static void deactivate_qh(dwc_otg_hcd_t * _hcd, + dwc_otg_qh_t * _qh, int free_qtd) +{ + int continue_split = 0; + dwc_otg_qtd_t * qtd; + DWC_DEBUGPL(DBG_HCDV, " %s(%p,%p,%d)\n", __func__, _hcd, _qh, + free_qtd); + qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); + if (qtd->complete_split) { + continue_split = 1; + } else if ((qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID) || + (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END)) { + continue_split = 1; + } + + if (free_qtd) { + /* + * Note that this was previously a call to + * dwc_otg_hcd_qtd_remove_and_free(qtd), which frees the qtd. + * However, that call frees the qtd memory, and we continue in the + * interrupt logic to access it many more times, including writing + * to it. With slub debugging on, it is clear that we were writing + * to memory we had freed. + * Call this instead, and now I have moved the freeing of the memory to + * the end of processing this interrupt. + */ + dwc_otg_hcd_qtd_remove(qtd); + + continue_split = 0; + } + _qh->channel = NULL; + _qh->qtd_in_process = NULL; + dwc_otg_hcd_qh_deactivate(_hcd, _qh, continue_split); +} + +/** + * Updates the state of an Isochronous URB when the transfer is stopped for + * any reason. The fields of the current entry in the frame descriptor array + * are set based on the transfer state and the input _halt_status. Completes + * the Isochronous URB if all the URB frames have been completed. + * + * @return DWC_OTG_HC_XFER_COMPLETE if there are more frames remaining to be + * transferred in the URB. Otherwise return DWC_OTG_HC_XFER_URB_COMPLETE. + */ +static dwc_otg_halt_status_e update_isoc_urb_state(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, + dwc_otg_halt_status_e _halt_status) +{ + struct urb *urb = _qtd->urb; + dwc_otg_halt_status_e ret_val = _halt_status; + struct usb_iso_packet_descriptor *frame_desc; + frame_desc = &urb->iso_frame_desc[_qtd->isoc_frame_index]; + switch (_halt_status) { + case DWC_OTG_HC_XFER_COMPLETE: + frame_desc->status = 0; + frame_desc->actual_length = + get_actual_xfer_length(_hc, _hc_regs, _qtd, _halt_status,NULL); + break; + case DWC_OTG_HC_XFER_FRAME_OVERRUN: + urb->error_count++; + if (_hc->ep_is_in) { + frame_desc->status = -ENOSR; + } else { + frame_desc->status = -ECOMM; + } + frame_desc->actual_length = 0; + break; + case DWC_OTG_HC_XFER_BABBLE_ERR: + urb->error_count++; + frame_desc->status = -EOVERFLOW; + + /* Don't need to update actual_length in this case. */ + break; + case DWC_OTG_HC_XFER_XACT_ERR: + urb->error_count++; + frame_desc->status = -EPROTO; + frame_desc->actual_length = + get_actual_xfer_length(_hc, _hc_regs, _qtd, _halt_status,NULL); + default: + DWC_ERROR("%s: Unhandled _halt_status (%d)\n", __func__, _halt_status); + BUG(); + break; + } + if (++_qtd->isoc_frame_index == urb->number_of_packets) { + /* + * urb->status is not used for isoc transfers. + * The individual frame_desc statuses are used instead. + */ + dwc_otg_hcd_complete_urb(_hcd, urb, 0); + ret_val = DWC_OTG_HC_XFER_URB_COMPLETE; + } else { + ret_val = DWC_OTG_HC_XFER_COMPLETE; + } + return ret_val; +} + +/** + * Releases a host channel for use by other transfers. Attempts to select and + * queue more transactions since at least one host channel is available. + * + * @param _hcd The HCD state structure. + * @param _hc The host channel to release. + * @param _qtd The QTD associated with the host channel. This QTD may be freed + * if the transfer is complete or an error has occurred. + * @param _halt_status Reason the channel is being released. This status + * determines the actions taken by this function. + */ + +static void release_channel(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_qtd_t * _qtd, dwc_otg_halt_status_e _halt_status, int *must_free) { + dwc_otg_transaction_type_e tr_type; + int free_qtd; + dwc_otg_qh_t * _qh; + int deact = 1; + int retry_delay = 1; + + DWC_DEBUGPL(DBG_HCDV, " %s: channel %d, halt_status %d\n", __func__, + _hc->hc_num, _halt_status); + switch (_halt_status) { + case DWC_OTG_HC_XFER_NYET: + case DWC_OTG_HC_XFER_NAK: + if (_halt_status == DWC_OTG_HC_XFER_NYET) { + retry_delay = nyet_deferral_delay; + } else { + retry_delay = nak_deferral_delay; + } + free_qtd = 0; + if (deferral_on && _hc->do_split) { + _qh = _hc->qh; + if (_qh) { + deact = dwc_otg_hcd_qh_deferr(_hcd, _qh , retry_delay); + } + } + break; + + case DWC_OTG_HC_XFER_URB_COMPLETE: + free_qtd = 1; + break; + case DWC_OTG_HC_XFER_AHB_ERR: + case DWC_OTG_HC_XFER_STALL: + case DWC_OTG_HC_XFER_BABBLE_ERR: + free_qtd = 1; + break; + case DWC_OTG_HC_XFER_XACT_ERR: + if (_qtd->error_count >= 3) { + DWC_DEBUGPL(DBG_HCDV, " Complete URB with transaction error\n"); + free_qtd = 1; + dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EPROTO); + } else { + free_qtd = 0; + } + break; + case DWC_OTG_HC_XFER_URB_DEQUEUE: + /* + * The QTD has already been removed and the QH has been + * deactivated. Don't want to do anything except release the + * host channel and try to queue more transfers. + */ + goto cleanup; + case DWC_OTG_HC_XFER_NO_HALT_STATUS: + DWC_ERROR("%s: No halt_status, channel %d\n", __func__, + _hc->hc_num); + free_qtd = 0; + break; + default: + free_qtd = 0; + break; + } + *must_free = free_qtd; + if (deact) { + deactivate_qh(_hcd, _hc->qh, free_qtd); + } +cleanup: + /* + * Release the host channel for use by other transfers. The cleanup + * function clears the channel interrupt enables and conditions, so + * there's no need to clear the Channel Halted interrupt separately. + */ + dwc_otg_hc_cleanup(_hcd->core_if, _hc); + list_add_tail(&_hc->hc_list_entry, &_hcd->free_hc_list); + switch (_hc->ep_type) { + case DWC_OTG_EP_TYPE_CONTROL: + case DWC_OTG_EP_TYPE_BULK: + _hcd->non_periodic_channels--; + break; + default: + /* + * Don't release reservations for periodic channels here. + * That's done when a periodic transfer is descheduled (i.e. + * when the QH is removed from the periodic schedule). + */ + break; + } + /* Try to queue more transfers now that there's a free channel, */ + /* unless erratum_usb09_patched is set */ + if (!erratum_usb09_patched) { + tr_type = dwc_otg_hcd_select_transactions(_hcd); + if (tr_type != DWC_OTG_TRANSACTION_NONE) { + dwc_otg_hcd_queue_transactions(_hcd, tr_type); + } + } +} + +/** + * Halts a host channel. If the channel cannot be halted immediately because + * the request queue is full, this function ensures that the FIFO empty + * interrupt for the appropriate queue is enabled so that the halt request can + * be queued when there is space in the request queue. + * + * This function may also be called in DMA mode. In that case, the channel is + * simply released since the core always halts the channel automatically in + * DMA mode. + */ +static void halt_channel(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_qtd_t * _qtd, dwc_otg_halt_status_e _halt_status, int *must_free) +{ + if (_hcd->core_if->dma_enable) { + release_channel(_hcd, _hc, _qtd, _halt_status, must_free); + return; + } + + /* Slave mode processing... */ + dwc_otg_hc_halt(_hcd->core_if, _hc, _halt_status); + if (_hc->halt_on_queue) { + gintmsk_data_t gintmsk = {.d32 = 0}; + dwc_otg_core_global_regs_t * global_regs; + global_regs = _hcd->core_if->core_global_regs; + if (_hc->ep_type == DWC_OTG_EP_TYPE_CONTROL || + _hc->ep_type == DWC_OTG_EP_TYPE_BULK) { + /* + * Make sure the Non-periodic Tx FIFO empty interrupt + * is enabled so that the non-periodic schedule will + * be processed. + */ + gintmsk.b.nptxfempty = 1; + dwc_modify_reg32(&global_regs->gintmsk, 0, gintmsk.d32); + } else { + /* + * Move the QH from the periodic queued schedule to + * the periodic assigned schedule. This allows the + * halt to be queued when the periodic schedule is + * processed. + */ + list_move(&_hc->qh->qh_list_entry, + &_hcd->periodic_sched_assigned); + + /* + * Make sure the Periodic Tx FIFO Empty interrupt is + * enabled so that the periodic schedule will be + * processed. + */ + gintmsk.b.ptxfempty = 1; + dwc_modify_reg32(&global_regs->gintmsk, 0,gintmsk.d32); + } + } +} + +/** + * Performs common cleanup for non-periodic transfers after a Transfer + * Complete interrupt. This function should be called after any endpoint type + * specific handling is finished to release the host channel. + */ +static void complete_non_periodic_xfer(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, + dwc_otg_halt_status_e _halt_status, int *must_free) +{ + hcint_data_t hcint; + _qtd->error_count = 0; + hcint.d32 = dwc_read_reg32(&_hc_regs->hcint); + if (hcint.b.nyet) { + /* + * Got a NYET on the last transaction of the transfer. This + * means that the endpoint should be in the PING state at the + * beginning of the next transfer. + */ + _hc->qh->ping_state = 1; + clear_hc_int(_hc_regs, nyet); + } + + /* + * Always halt and release the host channel to make it available for + * more transfers. There may still be more phases for a control + * transfer or more data packets for a bulk transfer at this point, + * but the host channel is still halted. A channel will be reassigned + * to the transfer when the non-periodic schedule is processed after + * the channel is released. This allows transactions to be queued + * properly via dwc_otg_hcd_queue_transactions, which also enables the + * Tx FIFO Empty interrupt if necessary. + */ + if (_hc->ep_is_in) { + /* + * IN transfers in Slave mode require an explicit disable to + * halt the channel. (In DMA mode, this call simply releases + * the channel.) + */ + halt_channel(_hcd, _hc, _qtd, _halt_status, must_free); + } else { + /* + * The channel is automatically disabled by the core for OUT + * transfers in Slave mode. + */ + release_channel(_hcd, _hc, _qtd, _halt_status, must_free); + } +} + +/** + * Performs common cleanup for periodic transfers after a Transfer Complete + * interrupt. This function should be called after any endpoint type specific + * handling is finished to release the host channel. + */ +static void complete_periodic_xfer(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, + dwc_otg_halt_status_e _halt_status, int *must_free) +{ + hctsiz_data_t hctsiz; + _qtd->error_count = 0; + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + if (!_hc->ep_is_in || hctsiz.b.pktcnt == 0) { + /* Core halts channel in these cases. */ + release_channel(_hcd, _hc, _qtd, _halt_status, must_free); + } else { + /* Flush any outstanding requests from the Tx queue. */ + halt_channel(_hcd, _hc, _qtd, _halt_status, must_free); + } +} + +/** + * Handles a host channel Transfer Complete interrupt. This handler may be + * called in either DMA mode or Slave mode. + */ +static int32_t handle_hc_xfercomp_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + int urb_xfer_done; + dwc_otg_halt_status_e halt_status = DWC_OTG_HC_XFER_COMPLETE; + struct urb *urb = _qtd->urb; + int pipe_type = usb_pipetype(urb->pipe); + int status = -EINPROGRESS; + + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "Transfer Complete--\n", _hc->hc_num); + + /* + * Handle xfer complete on CSPLIT. + */ + if (_hc->qh->do_split) { + _qtd->complete_split = 0; + } + + /* Update the QTD and URB states. */ + switch (pipe_type) { + case PIPE_CONTROL: + switch (_qtd->control_phase) { + case DWC_OTG_CONTROL_SETUP: + if (urb->transfer_buffer_length > 0) { + _qtd->control_phase = DWC_OTG_CONTROL_DATA; + } else { + _qtd->control_phase = DWC_OTG_CONTROL_STATUS; + } + DWC_DEBUGPL(DBG_HCDV, + " Control setup transaction done\n"); + halt_status = DWC_OTG_HC_XFER_COMPLETE; + break; + case DWC_OTG_CONTROL_DATA:{ + urb_xfer_done = update_urb_state_xfer_comp(_hc, _hc_regs,urb, _qtd, &status); + if (urb_xfer_done) { + _qtd->control_phase = DWC_OTG_CONTROL_STATUS; + DWC_DEBUGPL(DBG_HCDV," Control data transfer done\n"); + } else { + save_data_toggle(_hc, _hc_regs, _qtd); + } + halt_status = DWC_OTG_HC_XFER_COMPLETE; + break; + } + case DWC_OTG_CONTROL_STATUS: + DWC_DEBUGPL(DBG_HCDV, " Control transfer complete\n"); + if (status == -EINPROGRESS) { + status = 0; + } + dwc_otg_hcd_complete_urb(_hcd, urb, status); + halt_status = DWC_OTG_HC_XFER_URB_COMPLETE; + break; + } + complete_non_periodic_xfer(_hcd, _hc, _hc_regs, _qtd, + halt_status, must_free); + break; + case PIPE_BULK: + DWC_DEBUGPL(DBG_HCDV, " Bulk transfer complete\n"); + urb_xfer_done = update_urb_state_xfer_comp(_hc, _hc_regs, urb, _qtd, &status); + if (urb_xfer_done) { + dwc_otg_hcd_complete_urb(_hcd, urb, status); + halt_status = DWC_OTG_HC_XFER_URB_COMPLETE; + } else { + halt_status = DWC_OTG_HC_XFER_COMPLETE; + } + save_data_toggle(_hc, _hc_regs, _qtd); + complete_non_periodic_xfer(_hcd, _hc, _hc_regs, _qtd,halt_status, must_free); + break; + case PIPE_INTERRUPT: + DWC_DEBUGPL(DBG_HCDV, " Interrupt transfer complete\n"); + update_urb_state_xfer_comp(_hc, _hc_regs, urb, _qtd, &status); + /* + * Interrupt URB is done on the first transfer complete + * interrupt. + */ + dwc_otg_hcd_complete_urb(_hcd, urb, status); + save_data_toggle(_hc, _hc_regs, _qtd); + complete_periodic_xfer(_hcd, _hc, _hc_regs, _qtd, + DWC_OTG_HC_XFER_URB_COMPLETE, must_free); + break; + case PIPE_ISOCHRONOUS: + DWC_DEBUGPL(DBG_HCDV, " Isochronous transfer complete\n"); + if (_qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_ALL) { + halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd, + DWC_OTG_HC_XFER_COMPLETE); + } + complete_periodic_xfer(_hcd, _hc, _hc_regs, _qtd, halt_status, must_free); + break; + } + disable_hc_int(_hc_regs, xfercompl); + return 1; +} + +/** + * Handles a host channel STALL interrupt. This handler may be called in + * either DMA mode or Slave mode. + */ +static int32_t handle_hc_stall_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + struct urb *urb = _qtd->urb; + int pipe_type = usb_pipetype(urb->pipe); + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "STALL Received--\n", _hc->hc_num); + if (pipe_type == PIPE_CONTROL) { + dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EPIPE); + } + if (pipe_type == PIPE_BULK || pipe_type == PIPE_INTERRUPT) { + dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EPIPE); + /* + * USB protocol requires resetting the data toggle for bulk + * and interrupt endpoints when a CLEAR_FEATURE(ENDPOINT_HALT) + * setup command is issued to the endpoint. Anticipate the + * CLEAR_FEATURE command since a STALL has occurred and reset + * the data toggle now. + */ + _hc->qh->data_toggle = 0; + } + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_STALL, must_free); + disable_hc_int(_hc_regs, stall); + return 1; +} + +/* + * Updates the state of the URB when a transfer has been stopped due to an + * abnormal condition before the transfer completes. Modifies the + * actual_length field of the URB to reflect the number of bytes that have + * actually been transferred via the host channel. + */ +static void update_urb_state_xfer_intr(dwc_hc_t * _hc, + dwc_otg_hc_regs_t * _hc_regs, struct urb *_urb, dwc_otg_qtd_t * _qtd, + dwc_otg_halt_status_e _halt_status) +{ + uint32_t bytes_transferred = + get_actual_xfer_length(_hc, _hc_regs, _qtd, _halt_status, NULL); + _urb->actual_length += bytes_transferred; + +#ifdef CONFIG_DWC_DEBUG + { + hctsiz_data_t hctsiz; + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n", + __func__, (_hc->ep_is_in ? "IN" : "OUT"),_hc->hc_num); + DWC_DEBUGPL(DBG_HCDV, " _hc->start_pkt_count %d\n", + _hc->start_pkt_count); + DWC_DEBUGPL(DBG_HCDV, " hctsiz.pktcnt %d\n", hctsiz.b.pktcnt); + DWC_DEBUGPL(DBG_HCDV, " _hc->max_packet %d\n",_hc->max_packet); + DWC_DEBUGPL(DBG_HCDV, " bytes_transferred %d\n", + bytes_transferred); + DWC_DEBUGPL(DBG_HCDV, " _urb->actual_length %d\n", + _urb->actual_length); + DWC_DEBUGPL(DBG_HCDV, " _urb->transfer_buffer_length %d\n", + _urb->transfer_buffer_length); + } +#endif /* */ +} + +/** + * Handles a host channel NAK interrupt. This handler may be called in either + * DMA mode or Slave mode. + */ +static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) { + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "NAK Received--\n", _hc->hc_num); + /* + * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and + * interrupt. Re-start the SSPLIT transfer. + */ + if (_hc->do_split) { + if (_hc->complete_split) { + _qtd->error_count = 0; + } + _qtd->complete_split = 0; + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NAK, must_free); + goto handle_nak_done; + } + switch (usb_pipetype(_qtd->urb->pipe)) { + case PIPE_CONTROL: + case PIPE_BULK: + if (_hcd->core_if->dma_enable && _hc->ep_is_in) { + /* + * NAK interrupts are enabled on bulk/control IN + * transfers in DMA mode for the sole purpose of + * resetting the error count after a transaction error + * occurs. The core will continue transferring data. + */ + _qtd->error_count = 0; + goto handle_nak_done; + } + + /* + * NAK interrupts normally occur during OUT transfers in DMA + * or Slave mode. For IN transfers, more requests will be + * queued as request queue space is available. + */ + _qtd->error_count = 0; + if (!_hc->qh->ping_state) { + update_urb_state_xfer_intr(_hc, _hc_regs, _qtd->urb, + _qtd, DWC_OTG_HC_XFER_NAK); + save_data_toggle(_hc, _hc_regs, _qtd); + if (_qtd->urb->dev->speed == USB_SPEED_HIGH) { + _hc->qh->ping_state = 1; + } + } + + /* + * Halt the channel so the transfer can be re-started from + * the appropriate point or the PING protocol will + * start/continue. + */ + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NAK, must_free); + break; + case PIPE_INTERRUPT: + _qtd->error_count = 0; + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NAK, must_free); + break; + case PIPE_ISOCHRONOUS: + /* Should never get called for isochronous transfers. */ + BUG(); + break; + } + handle_nak_done:disable_hc_int(_hc_regs, nak); + clear_hc_int(_hc_regs, nak); + return 1; +} + +/** + * Handles a host channel ACK interrupt. This interrupt is enabled when + * performing the PING protocol in Slave mode, when errors occur during + * either Slave mode or DMA mode, and during Start Split transactions. + */ +static int32_t handle_hc_ack_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "ACK Received--\n", _hc->hc_num); + if (_hc->do_split) { + /* + * Handle ACK on SSPLIT. + * ACK should not occur in CSPLIT. + */ + if ((!_hc->ep_is_in) && (_hc->data_pid_start != DWC_OTG_HC_PID_SETUP)) { + _qtd->ssplit_out_xfer_count = _hc->xfer_len; + } + if (!(_hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !_hc->ep_is_in)) { + /* Don't need complete for isochronous out transfers. */ + _qtd->complete_split = 1; + } + + /* ISOC OUT */ + if ((_hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && !_hc->ep_is_in) { + switch (_hc->xact_pos) { + case DWC_HCSPLIT_XACTPOS_ALL: + break; + case DWC_HCSPLIT_XACTPOS_END: + _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL; + _qtd->isoc_split_offset = 0; + break; + case DWC_HCSPLIT_XACTPOS_BEGIN: + case DWC_HCSPLIT_XACTPOS_MID: + /* + * For BEGIN or MID, calculate the length for + * the next microframe to determine the correct + * SSPLIT token, either MID or END. + */ + do { + struct usb_iso_packet_descriptor *frame_desc; + frame_desc = &_qtd->urb->iso_frame_desc[_qtd->isoc_frame_index]; + _qtd->isoc_split_offset += 188; + if ((frame_desc->length - _qtd->isoc_split_offset) <=188) { + _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_END; + } else { + _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_MID; + } + } while (0); + break; + } + } else { + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_ACK, must_free); + } + } else { + _qtd->error_count = 0; + if (_hc->qh->ping_state) { + _hc->qh->ping_state = 0; + + /* + * Halt the channel so the transfer can be re-started + * from the appropriate point. This only happens in + * Slave mode. In DMA mode, the ping_state is cleared + * when the transfer is started because the core + * automatically executes the PING, then the transfer. + */ + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_ACK, must_free); + } + } + + /* + * If the ACK occurred when _not_ in the PING state, let the channel + * continue transferring data after clearing the error count. + */ + disable_hc_int(_hc_regs, ack); + clear_hc_int(_hc_regs, ack); + return 1; +} + +/** + * Handles a host channel NYET interrupt. This interrupt should only occur on + * Bulk and Control OUT endpoints and for complete split transactions. If a + * NYET occurs at the same time as a Transfer Complete interrupt, it is + * handled in the xfercomp interrupt handler, not here. This handler may be + * called in either DMA mode or Slave mode. + */ +static int32_t handle_hc_nyet_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "NYET Received--\n", _hc->hc_num); + + /* + * NYET on CSPLIT + * re-do the CSPLIT immediately on non-periodic + */ + if ((_hc->do_split) && (_hc->complete_split)) { + if ((_hc->ep_type == DWC_OTG_EP_TYPE_INTR) || + (_hc->ep_type == DWC_OTG_EP_TYPE_ISOC)) { + int frnum = dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd + (_hcd)); + if (dwc_full_frame_num(frnum) != + dwc_full_frame_num(_hc->qh->sched_frame)) { + + /* + * No longer in the same full speed frame. + * Treat this as a transaction error. + */ +#if 0 + /** @todo Fix system performance so this can + * be treated as an error. Right now complete + * splits cannot be scheduled precisely enough + * due to other system activity, so this error + * occurs regularly in Slave mode. + */ + _qtd->error_count++; + +#endif /* */ + _qtd->complete_split = 0; + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_XACT_ERR, must_free); + + /** @todo add support for isoc release */ + goto handle_nyet_done; + } + } + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NYET, must_free); + goto handle_nyet_done; + } + _hc->qh->ping_state = 1; + _qtd->error_count = 0; + update_urb_state_xfer_intr(_hc, _hc_regs, _qtd->urb, _qtd, + DWC_OTG_HC_XFER_NYET); + save_data_toggle(_hc, _hc_regs, _qtd); + + /* + * Halt the channel and re-start the transfer so the PING + * protocol will start. + */ + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NYET, must_free); +handle_nyet_done: + disable_hc_int(_hc_regs, nyet); + clear_hc_int(_hc_regs, nyet); + + return 1; +} + +/** + * Handles a host channel babble interrupt. This handler may be called in + * either DMA mode or Slave mode. + */ +static int32_t handle_hc_babble_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "Babble Error--\n", _hc->hc_num); + if (_hc->ep_type != DWC_OTG_EP_TYPE_ISOC) { + dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EOVERFLOW); + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_BABBLE_ERR, must_free); + } else { + dwc_otg_halt_status_e halt_status; + halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd, + DWC_OTG_HC_XFER_BABBLE_ERR); + halt_channel(_hcd, _hc, _qtd, halt_status, must_free); + } + disable_hc_int(_hc_regs, bblerr); + return 1; +} + +/** + * Handles a host channel AHB error interrupt. This handler is only called in + * DMA mode. + */ +static int32_t handle_hc_ahberr_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd) +{ + hcchar_data_t hcchar; + hcsplt_data_t hcsplt; + hctsiz_data_t hctsiz; + uint32_t hcdma; + struct urb *urb = _qtd->urb; + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "AHB Error--\n", _hc->hc_num); + hcchar.d32 = dwc_read_reg32(&_hc_regs->hcchar); + hcsplt.d32 = dwc_read_reg32(&_hc_regs->hcsplt); + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + hcdma = dwc_read_reg32(&_hc_regs->hcdma); + DWC_ERROR("AHB ERROR, Channel %d\n", _hc->hc_num); + DWC_ERROR(" hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32); + DWC_ERROR(" hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma); + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Enqueue\n"); + DWC_ERROR(" Device address: %d\n", usb_pipedevice(urb->pipe)); + DWC_ERROR(" Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe), + (usb_pipein(urb->pipe) ? "IN" : "OUT")); + DWC_ERROR(" Endpoint type: %s\n", ( { + char *pipetype; + switch (usb_pipetype(urb->pipe)) { + case PIPE_CONTROL: + pipetype = "CONTROL"; break; + case PIPE_BULK: + pipetype = "BULK"; break; + case PIPE_INTERRUPT: + pipetype = "INTERRUPT"; break; + case PIPE_ISOCHRONOUS: + pipetype = "ISOCHRONOUS"; break; + default: + pipetype = "UNKNOWN"; break; + }; + pipetype; + } )) ; + DWC_ERROR(" Speed: %s\n", ( { + char *speed; + switch (urb->dev->speed) { + case USB_SPEED_HIGH: + speed = "HIGH"; break; + case USB_SPEED_FULL: + speed = "FULL"; break; + case USB_SPEED_LOW: + speed = "LOW"; break; + default: + speed = "UNKNOWN"; break; + }; + speed; + } )) ; + DWC_ERROR(" Max packet size: %d\n", + usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))); + DWC_ERROR(" Data buffer length: %d\n", urb->transfer_buffer_length); + DWC_ERROR(" Transfer buffer: %p, Transfer DMA: %p\n", + urb->transfer_buffer, (void *)(u32)urb->transfer_dma); + DWC_ERROR(" Setup buffer: %p, Setup DMA: %p\n", urb->setup_packet, + (void *)(u32)urb->setup_dma); + DWC_ERROR(" Interval: %d\n", urb->interval); + dwc_otg_hcd_complete_urb(_hcd, urb, -EIO); + + /* + * Force a channel halt. Don't call halt_channel because that won't + * write to the HCCHARn register in DMA mode to force the halt. + */ + dwc_otg_hc_halt(_hcd->core_if, _hc, DWC_OTG_HC_XFER_AHB_ERR); + disable_hc_int(_hc_regs, ahberr); + return 1; +} + +/** + * Handles a host channel transaction error interrupt. This handler may be + * called in either DMA mode or Slave mode. + */ +static int32_t handle_hc_xacterr_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "Transaction Error--\n", _hc->hc_num); + switch (usb_pipetype(_qtd->urb->pipe)) { + case PIPE_CONTROL: + case PIPE_BULK: + _qtd->error_count++; + if (!_hc->qh->ping_state) { + update_urb_state_xfer_intr(_hc, _hc_regs, _qtd->urb, + _qtd, DWC_OTG_HC_XFER_XACT_ERR); + save_data_toggle(_hc, _hc_regs, _qtd); + if (!_hc->ep_is_in && _qtd->urb->dev->speed == USB_SPEED_HIGH) { + _hc->qh->ping_state = 1; + } + } + + /* + * Halt the channel so the transfer can be re-started from + * the appropriate point or the PING protocol will start. + */ + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_XACT_ERR, must_free); + break; + case PIPE_INTERRUPT: + _qtd->error_count++; + if ((_hc->do_split) && (_hc->complete_split)) { + _qtd->complete_split = 0; + } + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_XACT_ERR, must_free); + break; + case PIPE_ISOCHRONOUS: + { + dwc_otg_halt_status_e halt_status; + halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd, + DWC_OTG_HC_XFER_XACT_ERR); + halt_channel(_hcd, _hc, _qtd, halt_status, must_free); + } + break; + } + disable_hc_int(_hc_regs, xacterr); + return 1; +} + +/** + * Handles a host channel frame overrun interrupt. This handler may be called + * in either DMA mode or Slave mode. + */ +static int32_t handle_hc_frmovrun_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "Frame Overrun--\n", _hc->hc_num); + switch (usb_pipetype(_qtd->urb->pipe)) { + case PIPE_CONTROL: + case PIPE_BULK: + break; + case PIPE_INTERRUPT: + halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_FRAME_OVERRUN, must_free); + break; + case PIPE_ISOCHRONOUS: + { + dwc_otg_halt_status_e halt_status; + halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd, + DWC_OTG_HC_XFER_FRAME_OVERRUN); + halt_channel(_hcd, _hc, _qtd, halt_status, must_free); + } + break; + } + disable_hc_int(_hc_regs, frmovrun); + return 1; +} + +/** + * Handles a host channel data toggle error interrupt. This handler may be + * called in either DMA mode or Slave mode. + */ +static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "Data Toggle Error--\n", _hc->hc_num); + if (_hc->ep_is_in) { + _qtd->error_count = 0; + } else { + DWC_ERROR("Data Toggle Error on OUT transfer," + "channel %d\n", _hc->hc_num); + } + disable_hc_int(_hc_regs, datatglerr); + return 1; +} + +#ifdef CONFIG_DWC_DEBUG +/** + * This function is for debug only. It checks that a valid halt status is set + * and that HCCHARn.chdis is clear. If there's a problem, corrective action is + * taken and a warning is issued. + * @return 1 if halt status is ok, 0 otherwise. + */ +static inline int halt_status_ok(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd) +{ + hcchar_data_t hcchar; + hctsiz_data_t hctsiz; + hcint_data_t hcint; + hcintmsk_data_t hcintmsk; + hcsplt_data_t hcsplt; + if (_hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS) { + /* + * This code is here only as a check. This condition should + * never happen. Ignore the halt if it does occur. + */ + hcchar.d32 = dwc_read_reg32(&_hc_regs->hcchar); + hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz); + hcint.d32 = dwc_read_reg32(&_hc_regs->hcint); + hcintmsk.d32 = dwc_read_reg32(&_hc_regs->hcintmsk); + hcsplt.d32 = dwc_read_reg32(&_hc_regs->hcsplt); + DWC_WARN("%s: _hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS, " + "channel %d, hcchar 0x%08x, hctsiz 0x%08x, " + "hcint 0x%08x, hcintmsk 0x%08x, " + "hcsplt 0x%08x, qtd->complete_split %d\n", __func__, + _hc->hc_num, hcchar.d32, hctsiz.d32, hcint.d32, + hcintmsk.d32, hcsplt.d32, _qtd->complete_split); + DWC_WARN("%s: no halt status, channel %d, ignoring interrupt\n", + __func__, _hc->hc_num); + DWC_WARN("\n"); + clear_hc_int(_hc_regs, chhltd); + return 0; + } + + /* + * This code is here only as a check. hcchar.chdis should + * never be set when the halt interrupt occurs. Halt the + * channel again if it does occur. + */ + hcchar.d32 = dwc_read_reg32(&_hc_regs->hcchar); + if (hcchar.b.chdis) { + DWC_WARN("%s: hcchar.chdis set unexpectedly, " + "hcchar 0x%08x, trying to halt again\n", __func__, + hcchar.d32); + clear_hc_int(_hc_regs, chhltd); + _hc->halt_pending = 0; + halt_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free); + return 0; + } + return 1; +} +#endif /* */ + +/** + * Handles a host Channel Halted interrupt in DMA mode. This handler + * determines the reason the channel halted and proceeds accordingly. + */ +static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + hcint_data_t hcint; + hcintmsk_data_t hcintmsk; + if (_hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE || + _hc->halt_status == DWC_OTG_HC_XFER_AHB_ERR) { + /* + * Just release the channel. A dequeue can happen on a + * transfer timeout. In the case of an AHB Error, the channel + * was forced to halt because there's no way to gracefully + * recover. + */ + release_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free); + return; + } + + /* Read the HCINTn register to determine the cause for the halt. */ + hcint.d32 = dwc_read_reg32(&_hc_regs->hcint); + hcintmsk.d32 = dwc_read_reg32(&_hc_regs->hcintmsk); + if (hcint.b.xfercomp) { + + /** @todo This is here because of a possible hardware bug. Spec + * says that on SPLIT-ISOC OUT transfers in DMA mode that a HALT + * interrupt w/ACK bit set should occur, but I only see the + * XFERCOMP bit, even with it masked out. This is a workaround + * for that behavior. Should fix this when hardware is fixed. + */ + if ((_hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && (!_hc->ep_is_in)) { + handle_hc_ack_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } + handle_hc_xfercomp_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.stall) { + handle_hc_stall_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.xacterr) { + /* + * Must handle xacterr before nak or ack. Could get a xacterr + * at the same time as either of these on a BULK/CONTROL OUT + * that started with a PING. The xacterr takes precedence. + */ + handle_hc_xacterr_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.nyet) { + /* + * Must handle nyet before nak or ack. Could get a nyet at the + * same time as either of those on a BULK/CONTROL OUT that + * started with a PING. The nyet takes precedence. + */ + handle_hc_nyet_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.bblerr) { + handle_hc_babble_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.frmovrun) { + handle_hc_frmovrun_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.datatglerr) { + handle_hc_datatglerr_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.nak && !hcintmsk.b.nak) { + /* + * If nak is not masked, it's because a non-split IN transfer + * is in an error state. In that case, the nak is handled by + * the nak interrupt handler, not here. Handle nak here for + * BULK/CONTROL OUT transfers, which halt on a NAK to allow + * rewinding the buffer pointer. + */ + handle_hc_nak_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else if (hcint.b.ack && !hcintmsk.b.ack) { + /* + * If ack is not masked, it's because a non-split IN transfer + * is in an error state. In that case, the ack is handled by + * the ack interrupt handler, not here. Handle ack here for + * split transfers. Start splits halt on ACK. + */ + handle_hc_ack_intr(_hcd, _hc, _hc_regs, _qtd, must_free); + } else { + if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR || + _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) { + /* + * A periodic transfer halted with no other channel + * interrupts set. Assume it was halted by the core + * because it could not be completed in its scheduled + * (micro)frame. + */ +#ifdef CONFIG_DWC_DEBUG + DWC_PRINT("%s: Halt channel %d (assume incomplete periodic transfer)\n", + __func__, _hc->hc_num); + +#endif /* */ + halt_channel(_hcd, _hc, _qtd, + DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE, must_free); + } else { + DWC_ERROR("%s: Channel %d, DMA Mode -- ChHltd set, but reason " + "for halting is unknown, nyet %d, hcint 0x%08x, intsts 0x%08x\n", + __func__, _hc->hc_num, hcint.b.nyet, hcint.d32, + dwc_read_reg32(&_hcd->core_if->core_global_regs->gintsts)); + } + } +} + +/** + * Handles a host channel Channel Halted interrupt. + * + * In slave mode, this handler is called only when the driver specifically + * requests a halt. This occurs during handling other host channel interrupts + * (e.g. nak, xacterr, stall, nyet, etc.). + * + * In DMA mode, this is the interrupt that occurs when the core has finished + * processing a transfer on a channel. Other host channel interrupts (except + * ahberr) are disabled in DMA mode. + */ +static int32_t handle_hc_chhltd_intr(dwc_otg_hcd_t * _hcd, + dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free) +{ + DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: " + "Channel Halted--\n", _hc->hc_num); + if (_hcd->core_if->dma_enable) { + handle_hc_chhltd_intr_dma(_hcd, _hc, _hc_regs, _qtd, must_free); + } else { +#ifdef CONFIG_DWC_DEBUG + if (!halt_status_ok(_hcd, _hc, _hc_regs, _qtd)) { + return 1; + } +#endif /* */ + release_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free); + } + clear_hc_int(_hc_regs, chhltd); + return 1; +} + +/** Handles interrupt for a specific Host Channel */ +int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * _dwc_otg_hcd, uint32_t _num) +{ + int must_free = 0; + int retval = 0; + hcint_data_t hcint; + hcintmsk_data_t hcintmsk; + dwc_hc_t * hc; + dwc_otg_hc_regs_t * hc_regs; + dwc_otg_qtd_t * qtd; + DWC_DEBUGPL(DBG_HCDV, "--Host Channel Interrupt--, Channel %d\n",_num); + hc = _dwc_otg_hcd->hc_ptr_array[_num]; + hc_regs = _dwc_otg_hcd->core_if->host_if->hc_regs[_num]; + qtd = list_entry(hc->qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); + hcint.d32 = dwc_read_reg32(&hc_regs->hcint); + hcintmsk.d32 = dwc_read_reg32(&hc_regs->hcintmsk); + DWC_DEBUGPL(DBG_HCDV, " hcint 0x%08x, hcintmsk 0x%08x, hcint&hcintmsk 0x%08x\n", + hcint.d32, hcintmsk.d32, (hcint.d32 & hcintmsk.d32)); + hcint.d32 = hcint.d32 & hcintmsk.d32; + if (!_dwc_otg_hcd->core_if->dma_enable) { + if ((hcint.b.chhltd) && (hcint.d32 != 0x2)) { + hcint.b.chhltd = 0; + } + } + if (hcint.b.xfercomp) { + retval |= handle_hc_xfercomp_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + /* + * If NYET occurred at same time as Xfer Complete, the NYET is + * handled by the Xfer Complete interrupt handler. Don't want + * to call the NYET interrupt handler in this case. + */ + hcint.b.nyet = 0; + } + if (hcint.b.chhltd) { + retval |= handle_hc_chhltd_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.ahberr) { + retval |= handle_hc_ahberr_intr(_dwc_otg_hcd, hc, hc_regs, qtd); + } + if (hcint.b.stall) { + retval |= handle_hc_stall_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.nak) { + retval |= handle_hc_nak_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.ack) { + retval |= handle_hc_ack_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.nyet) { + retval |= handle_hc_nyet_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.xacterr) { + retval |= handle_hc_xacterr_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.bblerr) { + retval |= handle_hc_babble_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.frmovrun) { + retval |= handle_hc_frmovrun_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + if (hcint.b.datatglerr) { + retval |= handle_hc_datatglerr_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free); + } + /* + * Logic to free the qtd here, at the end of the hc intr + * processing, if the handling of this interrupt determined + * that it needs to be freed. + */ + if (must_free) { + /* Free the qtd here now that we are done using it. */ + dwc_otg_hcd_qtd_free(qtd); + } + return retval; +} + +#endif /* DWC_DEVICE_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_hcd_queue.c b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd_queue.c new file mode 100644 index 00000000000..b33b32e8468 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_hcd_queue.c @@ -0,0 +1,696 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_queue.c $ + * $Revision: #4 $ + * $Date: 2005/09/15 $ + * $Change: 537387 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#ifndef CONFIG_DWC_DEVICE_ONLY + +/** + * @file + * + * This file contains the functions to manage Queue Heads and Queue + * Transfer Descriptors. + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/string.h> + +#include "dwc_otg_driver.h" +#include "dwc_otg_hcd.h" +#include "dwc_otg_regs.h" + +/** + * This function allocates and initializes a QH. + * + * @param _hcd The HCD state structure for the DWC OTG controller. + * @param[in] _urb Holds the information about the device/endpoint that we need + * to initialize the QH. + * + * @return Returns pointer to the newly allocated QH, or NULL on error. */ +dwc_otg_qh_t * dwc_otg_hcd_qh_create(dwc_otg_hcd_t * _hcd, + struct urb * _urb) +{ + dwc_otg_qh_t * qh; + + /* Allocate memory */ + /** @todo add memflags argument */ + qh = dwc_otg_hcd_qh_alloc(); + if (qh == NULL) { + return NULL; + } + dwc_otg_hcd_qh_init(_hcd, qh, _urb); + return qh; +} + +/** Free each QTD in the QH's QTD-list then free the QH. QH should already be + * removed from a list. QTD list should already be empty if called from URB + * Dequeue. + * + * @param[in] _qh The QH to free. + */ +void dwc_otg_hcd_qh_free(dwc_otg_qh_t * _qh) +{ + dwc_otg_qtd_t * qtd; + struct list_head *pos; + unsigned long flags; + + /* Free each QTD in the QTD list */ + local_irq_save(flags); + for (pos = _qh->qtd_list.next; pos != &_qh->qtd_list; + pos = _qh->qtd_list.next) { + list_del(pos); + qtd = dwc_list_to_qtd(pos); + dwc_otg_hcd_qtd_free(qtd); + } + local_irq_restore(flags); + kfree(_qh); + return; +} + +/** Initializes a QH structure. + * + * @param[in] _hcd The HCD state structure for the DWC OTG controller. + * @param[in] _qh The QH to init. + * @param[in] _urb Holds the information about the device/endpoint that we need + * to initialize the QH. */ +#define SCHEDULE_SLOP 10 +void dwc_otg_hcd_qh_init(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh, + struct urb *_urb) +{ + memset(_qh, 0, sizeof(dwc_otg_qh_t)); + + /* Initialize QH */ + switch (usb_pipetype(_urb->pipe)) { + case PIPE_CONTROL: + _qh->ep_type = USB_ENDPOINT_XFER_CONTROL; + break; + case PIPE_BULK: + _qh->ep_type = USB_ENDPOINT_XFER_BULK; + break; + case PIPE_ISOCHRONOUS: + _qh->ep_type = USB_ENDPOINT_XFER_ISOC; + break; + case PIPE_INTERRUPT: + _qh->ep_type = USB_ENDPOINT_XFER_INT; + break; + } + _qh->ep_is_in = usb_pipein(_urb->pipe) ? 1 : 0; + _qh->data_toggle = DWC_OTG_HC_PID_DATA0; + _qh->maxp = usb_maxpacket(_urb->dev, _urb->pipe, !(usb_pipein(_urb->pipe))); + INIT_LIST_HEAD(&_qh->qtd_list); + INIT_LIST_HEAD(&_qh->qh_list_entry); + _qh->channel = NULL; + + /* FS/LS Enpoint on HS Hub + * NOT virtual root hub */ + _qh->do_split = 0; + if (((_urb->dev->speed == USB_SPEED_LOW) || + (_urb->dev->speed == USB_SPEED_FULL)) && + (_urb->dev->tt) && (_urb->dev->tt->hub) && (_urb->dev->tt->hub->devnum != 1)) { + DWC_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n", + usb_pipeendpoint(_urb->pipe), _urb->dev->tt->hub->devnum, _urb->dev->ttport); + _qh->do_split = 1; + } + if (_qh->ep_type == USB_ENDPOINT_XFER_INT + || _qh->ep_type == USB_ENDPOINT_XFER_ISOC) { + + /* Compute scheduling parameters once and save them. */ + hprt0_data_t hprt; + + /** @todo Account for split transfers in the bus time. */ + int bytecount = dwc_hb_mult(_qh->maxp) * dwc_max_packet(_qh->maxp); + _qh->usecs = NS_TO_US(usb_calc_bus_time(_urb->dev->speed, + usb_pipein(_urb->pipe), + (_qh->ep_type == USB_ENDPOINT_XFER_ISOC),bytecount)); + + /* Start in a slightly future (micro)frame. */ + _qh->sched_frame = dwc_frame_num_inc(_hcd->frame_number, SCHEDULE_SLOP); + _qh->interval = _urb->interval; + +#if 0 + /* Increase interrupt polling rate for debugging. */ + if (_qh->ep_type == USB_ENDPOINT_XFER_INT) { + _qh->interval = 8; + } + +#endif /* */ + hprt.d32 = dwc_read_reg32(_hcd->core_if->host_if->hprt0); + if ((hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) && + ((_urb->dev->speed == USB_SPEED_LOW) || + (_urb->dev->speed == USB_SPEED_FULL))) { + _qh->interval *= 8; + _qh->sched_frame |= 0x7; + _qh->start_split_frame = _qh->sched_frame; + } + } + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD QH Initialized\n"); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - qh = %p\n", _qh); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Device Address = %d\n", + _urb->dev->devnum); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Endpoint %d, %s\n", + usb_pipeendpoint(_urb->pipe), + usb_pipein(_urb->pipe) == USB_DIR_IN ? "IN" : "OUT"); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Speed = %s\n", ( { + char *speed; + switch(_urb->dev->speed) { + case USB_SPEED_LOW: + speed = "low"; break; + case USB_SPEED_FULL: + speed = "full"; break; + case USB_SPEED_HIGH: + speed = "high"; break; + default: + speed = "?"; + break; + }; + speed; + } )) ; + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Type = %s\n", ( { + char *type; + switch (_qh->ep_type) { + case USB_ENDPOINT_XFER_ISOC: + type = "isochronous"; break; + case USB_ENDPOINT_XFER_INT: + type = "interrupt"; break; + case USB_ENDPOINT_XFER_CONTROL: + type = "control"; break; + case USB_ENDPOINT_XFER_BULK: + type = "bulk"; break; + default: + type = "?";break; + }; + type; + } )) ; + +#ifdef CONFIG_DWC_DEBUG + if (_qh->ep_type == USB_ENDPOINT_XFER_INT) { + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - usecs = %d\n", + _qh->usecs); + DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - interval = %d\n", + _qh->interval); + } + +#endif /* */ + return; +} + +/** + * Checks that a channel is available for a periodic transfer. + * + * @return 0 if successful, negative error code otherise. + */ +static int periodic_channel_available(dwc_otg_hcd_t * _hcd) +{ + /* + * Currently assuming that there is a dedicated host channnel for each + * periodic transaction plus at least one host channel for + * non-periodic transactions. + */ + int status; + int num_channels; + num_channels = _hcd->core_if->core_params->host_channels; + if ((_hcd->periodic_channels + _hcd->non_periodic_channels < + num_channels) && (_hcd->periodic_channels < num_channels - 1)) { + status = 0; + } else { + DWC_NOTICE("%s: Total channels: %d, Periodic: %d, Non-periodic: %d\n", + __func__, num_channels, _hcd->periodic_channels, + _hcd->non_periodic_channels); + status = -ENOSPC; + } + return status; +} + +/** + * Checks that there is sufficient bandwidth for the specified QH in the + * periodic schedule. For simplicity, this calculation assumes that all the + * transfers in the periodic schedule may occur in the same (micro)frame. + * + * @param _hcd The HCD state structure for the DWC OTG controller. + * @param _qh QH containing periodic bandwidth required. + * + * @return 0 if successful, negative error code otherwise. + */ +static int check_periodic_bandwidth(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + int status; + uint16_t max_claimed_usecs; + status = 0; + if (_hcd->core_if->core_params->speed == DWC_SPEED_PARAM_HIGH) { + /* + * High speed mode. + * Max periodic usecs is 80% x 125 usec = 100 usec. + */ + max_claimed_usecs = 100 - _qh->usecs; + } else { + /* + * Full speed mode. + * Max periodic usecs is 90% x 1000 usec = 900 usec. + */ + max_claimed_usecs = 900 - _qh->usecs; + } + if (_hcd->periodic_usecs > max_claimed_usecs) { +#undef USB_DWC_OTG_IGNORE_BANDWIDTH +#ifndef USB_DWC_OTG_IGNORE_BANDWIDTH + DWC_NOTICE("%s: already claimed usecs %d, required usecs %d\n", + __func__, _hcd->periodic_usecs, _qh->usecs); + status = -ENOSPC; +#else + status = 0; +#endif + } + return status; +} + +/** + * Checks that the max transfer size allowed in a host channel is large enough + * to handle the maximum data transfer in a single (micro)frame for a periodic + * transfer. + * + * @param _hcd The HCD state structure for the DWC OTG controller. + * @param _qh QH for a periodic endpoint. + * + * @return 0 if successful, negative error code otherwise. + */ +static int check_max_xfer_size(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + int status; + uint32_t max_xfer_size; + uint32_t max_channel_xfer_size; + status = 0; + max_xfer_size = dwc_max_packet(_qh->maxp) * dwc_hb_mult(_qh->maxp); + max_channel_xfer_size = _hcd->core_if->core_params->max_transfer_size; + if (max_xfer_size > max_channel_xfer_size) { + DWC_NOTICE("%s: Periodic xfer length %d > " + "max xfer length for channel %d\n", __func__, + max_xfer_size, max_channel_xfer_size); + status = -ENOSPC; + } + return status; +} + +/** + * Schedules an interrupt or isochronous transfer in the periodic schedule. + * + * @param _hcd The HCD state structure for the DWC OTG controller. + * @param _qh QH for the periodic transfer. The QH should already contain the + * scheduling information. + * + * @return 0 if successful, negative error code otherwise. + */ +static int schedule_periodic(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + int status = 0; + status = periodic_channel_available(_hcd); + if (status) { + DWC_NOTICE("%s: No host channel available for periodic " + "transfer.\n", __func__); + return status; + } + status = check_periodic_bandwidth(_hcd, _qh); + if (status) { + DWC_NOTICE("%s: Insufficient periodic bandwidth for " + "periodic transfer.\n", __func__); + return status; + } + status = check_max_xfer_size(_hcd, _qh); + if (status) { + DWC_NOTICE("%s: Channel max transfer size too small " + "for periodic transfer.\n", __func__); + return status; + } + + /* Always start in the inactive schedule. */ + list_add_tail(&_qh->qh_list_entry, &_hcd->periodic_sched_inactive); + + /* Reserve the periodic channel. */ + _hcd->periodic_channels++; + + /* Update claimed usecs per (micro)frame. */ + _hcd->periodic_usecs += _qh->usecs; + + /* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */ + hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_allocated += + _qh->usecs / _qh->interval; + + if (_qh->ep_type == USB_ENDPOINT_XFER_INT) { + hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_int_reqs++; + DWC_DEBUGPL(DBG_HCD, + "Scheduled intr: qh %p, usecs %d, period %d\n", + _qh, _qh->usecs, _qh->interval); + } else { + hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_isoc_reqs++; + DWC_DEBUGPL(DBG_HCD, + "Scheduled isoc: qh %p, usecs %d, period %d\n", + _qh, _qh->usecs, _qh->interval); + } + return status; +} + +/** + * This function adds a QH to either the non periodic or periodic schedule if + * it is not already in the schedule. If the QH is already in the schedule, no + * action is taken. + * + * @return 0 if successful, negative error code otherwise. + */ +int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + unsigned long flags; + int status = 0; + local_irq_save(flags); + if (!list_empty(&_qh->qh_list_entry)) { + /* QH already in a schedule. */ + goto done; + } + + /* Add the new QH to the appropriate schedule */ + if (dwc_qh_is_non_per(_qh)) { + /* Always start in the inactive schedule. */ + list_add_tail(&_qh->qh_list_entry, + &_hcd->non_periodic_sched_inactive); + } else { + status = schedule_periodic(_hcd, _qh); + } + +done:local_irq_restore(flags); + return status; +} +/** + * This function adds a QH to the non periodic deferred schedule. + * + * @return 0 if successful, negative error code otherwise. + */ +int dwc_otg_hcd_qh_add_deferred(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + unsigned long flags; + local_irq_save(flags); + if (!list_empty(&_qh->qh_list_entry)) { + /* QH already in a schedule. */ + goto done; + } + + /* Add the new QH to the non periodic deferred schedule */ + if (dwc_qh_is_non_per(_qh)) { + list_add_tail(&_qh->qh_list_entry, + &_hcd->non_periodic_sched_deferred); + } +done: + local_irq_restore(flags); + return 0; +} + +/** + * Removes an interrupt or isochronous transfer from the periodic schedule. + * + * @param _hcd The HCD state structure for the DWC OTG controller. + * @param _qh QH for the periodic transfer. + */ +static void deschedule_periodic(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + list_del_init(&_qh->qh_list_entry); + + /* Release the periodic channel reservation. */ + _hcd->periodic_channels--; + + /* Update claimed usecs per (micro)frame. */ + _hcd->periodic_usecs -= _qh->usecs; + + /* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */ + hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_allocated -= + _qh->usecs / _qh->interval; + + if (_qh->ep_type == USB_ENDPOINT_XFER_INT) { + hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_int_reqs--; + DWC_DEBUGPL(DBG_HCD, + "Descheduled intr: qh %p, usecs %d, period %d\n", + _qh, _qh->usecs, _qh->interval); + } else { + hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_isoc_reqs--; + DWC_DEBUGPL(DBG_HCD, + "Descheduled isoc: qh %p, usecs %d, period %d\n", + _qh, _qh->usecs, _qh->interval); + } +} + +/** + * Removes a QH from either the non-periodic or periodic schedule. Memory is + * not freed. + * + * @param[in] _hcd The HCD state structure. + * @param[in] _qh QH to remove from schedule. */ +void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + unsigned long flags; + local_irq_save(flags); + if (list_empty(&_qh->qh_list_entry)) { + /* QH is not in a schedule. */ + goto done; + } + if (dwc_qh_is_non_per(_qh)) { + if (_hcd->non_periodic_qh_ptr == &_qh->qh_list_entry) { + _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next; + } + list_del_init(&_qh->qh_list_entry); + } else { + deschedule_periodic(_hcd, _qh); + } + +done:local_irq_restore(flags); +} + +/** + * Defers a QH. For non-periodic QHs, removes the QH from the active + * non-periodic schedule. The QH is added to the deferred non-periodic + * schedule if any QTDs are still attached to the QH. + */ +int dwc_otg_hcd_qh_deferr(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh, int delay) +{ + int deact = 1; + unsigned long flags; + local_irq_save(flags); + if (dwc_qh_is_non_per(_qh)) { + _qh->sched_frame = + dwc_frame_num_inc(_hcd->frame_number, + delay); + _qh->channel = NULL; + _qh->qtd_in_process = NULL; + deact = 0; + dwc_otg_hcd_qh_remove(_hcd, _qh); + if (!list_empty(&_qh->qtd_list)) { + /* Add back to deferred non-periodic schedule. */ + dwc_otg_hcd_qh_add_deferred(_hcd, _qh); + } + } + local_irq_restore(flags); + return deact; +} +/** + * Deactivates a QH. For non-periodic QHs, removes the QH from the active + * non-periodic schedule. The QH is added to the inactive non-periodic + * schedule if any QTDs are still attached to the QH. + * + * For periodic QHs, the QH is removed from the periodic queued schedule. If + * there are any QTDs still attached to the QH, the QH is added to either the + * periodic inactive schedule or the periodic ready schedule and its next + * scheduled frame is calculated. The QH is placed in the ready schedule if + * the scheduled frame has been reached already. Otherwise it's placed in the + * inactive schedule. If there are no QTDs attached to the QH, the QH is + * completely removed from the periodic schedule. + */ +void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh, + int sched_next_periodic_split) +{ + unsigned long flags; + local_irq_save(flags); + if (dwc_qh_is_non_per(_qh)) { + dwc_otg_hcd_qh_remove(_hcd, _qh); + if (!list_empty(&_qh->qtd_list)) { + /* Add back to inactive non-periodic schedule. */ + dwc_otg_hcd_qh_add(_hcd, _qh); + } + } else { + uint16_t frame_number = + dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(_hcd)); + if (_qh->do_split) { + /* Schedule the next continuing periodic split transfer */ + if (sched_next_periodic_split) { + _qh->sched_frame = frame_number; + if (dwc_frame_num_le(frame_number, + dwc_frame_num_inc(_qh->start_split_frame,1))) { + /* + * Allow one frame to elapse after start + * split microframe before scheduling + * complete split, but DONT if we are + * doing the next start split in the + * same frame for an ISOC out. + */ + if ((_qh->ep_type != USB_ENDPOINT_XFER_ISOC) + || (_qh->ep_is_in != 0)) { + _qh->sched_frame = dwc_frame_num_inc(_qh->sched_frame,1); + } + } + } else { + _qh->sched_frame = dwc_frame_num_inc(_qh->start_split_frame, + _qh->interval); + if (dwc_frame_num_le(_qh->sched_frame, frame_number)) { + _qh->sched_frame = frame_number; + } + _qh->sched_frame |= 0x7; + _qh->start_split_frame = _qh->sched_frame; + } + } else { + _qh->sched_frame = + dwc_frame_num_inc(_qh->sched_frame, _qh->interval); + if (dwc_frame_num_le(_qh->sched_frame, frame_number)) { + _qh->sched_frame = frame_number; + } + } + if (list_empty(&_qh->qtd_list)) { + dwc_otg_hcd_qh_remove(_hcd, _qh); + } else { + /* + * Remove from periodic_sched_queued and move to + * appropriate queue. + */ + if (_qh->sched_frame == frame_number) { + list_move(&_qh->qh_list_entry, + &_hcd->periodic_sched_ready); + } else { + list_move(&_qh->qh_list_entry, + &_hcd->periodic_sched_inactive); + } + } + } + local_irq_restore(flags); +} + +/** + * This function allocates and initializes a QTD. + * + * @param[in] _urb The URB to create a QTD from. Each URB-QTD pair will end up + * pointing to each other so each pair should have a unique correlation. + * + * @return Returns pointer to the newly allocated QTD, or NULL on error. */ +dwc_otg_qtd_t * dwc_otg_hcd_qtd_create(struct urb *_urb) +{ + dwc_otg_qtd_t * qtd; + qtd = dwc_otg_hcd_qtd_alloc(); + if (qtd == NULL) { + return NULL; + } + dwc_otg_hcd_qtd_init(qtd, _urb); + return qtd; +} + +/** + * Initializes a QTD structure. + * + * @param[in] _qtd The QTD to initialize. + * @param[in] _urb The URB to use for initialization. */ +void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * _qtd, struct urb *_urb) +{ + memset(_qtd, 0, sizeof(dwc_otg_qtd_t)); + _qtd->urb = _urb; + if (usb_pipecontrol(_urb->pipe)) { + /* + * The only time the QTD data toggle is used is on the data + * phase of control transfers. This phase always starts with + * DATA1. + */ + _qtd->data_toggle = DWC_OTG_HC_PID_DATA1; + _qtd->control_phase = DWC_OTG_CONTROL_SETUP; + } + + /* start split */ + _qtd->complete_split = 0; + _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL; + _qtd->isoc_split_offset = 0; + + /* Store the qtd ptr in the urb to reference what QTD. */ + _urb->hcpriv = _qtd; + return; +} + +/** + * This function adds a QTD to the QTD-list of a QH. It will find the correct + * QH to place the QTD into. If it does not find a QH, then it will create a + * new QH. If the QH to which the QTD is added is not currently scheduled, it + * is placed into the proper schedule based on its EP type. + * + * @param[in] _qtd The QTD to add + * @param[in] _dwc_otg_hcd The DWC HCD structure + * + * @return 0 if successful, negative error code otherwise. + */ +int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * _qtd, dwc_otg_hcd_t * _dwc_otg_hcd) +{ + struct usb_host_endpoint *ep; + dwc_otg_qh_t * qh; + unsigned long flags; + int retval = 0; + struct urb *urb = _qtd->urb; + local_irq_save(flags); + + /* + * Get the QH which holds the QTD-list to insert to. Create QH if it + * doesn't exist. + */ + ep = dwc_urb_to_endpoint(urb); + qh = (dwc_otg_qh_t *) ep->hcpriv; + if (qh == NULL) { + qh = dwc_otg_hcd_qh_create(_dwc_otg_hcd, urb); + if (qh == NULL) { + retval = -1; + goto done; + } + ep->hcpriv = qh; + } + _qtd->qtd_qh_ptr = qh; + retval = dwc_otg_hcd_qh_add(_dwc_otg_hcd, qh); + if (retval == 0) { + list_add_tail(&_qtd->qtd_list_entry, &qh->qtd_list); + } + +done: + local_irq_restore(flags); + + return retval; +} + + +#endif /* DWC_DEVICE_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_pcd.c b/drivers/usb/gadget/dwc_otg/dwc_otg_pcd.c new file mode 100644 index 00000000000..4bd17de7939 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_pcd.c @@ -0,0 +1,1408 @@ + /* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_pcd.c $ + * $Revision: #18 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#ifndef CONFIG_DWC_HOST_ONLY + +/** @file + * This file implements the Peripheral Controller Driver. + * + * The Peripheral Controller Driver (PCD) is responsible for + * translating requests from the Function Driver into the appropriate + * actions on the DWC_otg controller. It isolates the Function Driver + * from the specifics of the controller by providing an API to the + * Function Driver. + * + * The Peripheral Controller Driver for Linux will implement the + * Gadget API, so that the existing Gadget drivers can be used. + * (Gadget Driver is the Linux terminology for a Function Driver.) + * + * The Linux Gadget API is defined in the header file + * <code><linux/usb/gadget.h></code>. The USB EP operations API is + * defined in the structure <code>usb_ep_ops</code> and the USB + * Controller API is defined in the structure + * <code>usb_gadget_ops</code>. + * + * An important function of the PCD is managing interrupts generated + * by the DWC_otg controller. The implementation of the DWC_otg device + * mode interrupt service routines is in dwc_otg_pcd_intr.c. + * + * @todo Add Device Mode test modes (Test J mode, Test K mode, etc). + * @todo Does it work when the request size is greater than DEPTSIZ + * transfer size + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/string.h> +#include <linux/dma-mapping.h> + +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + +#include "dwc_otg_driver.h" +#include "dwc_otg_pcd.h" + +/** + * Static PCD pointer for use in usb_gadget_register_driver and + * usb_gadget_unregister_driver. Initialized in dwc_otg_pcd_init. + */ +static dwc_otg_pcd_t *s_pcd = 0; + +/* Display the contents of the buffer */ +extern void dump_msg(const u8 * buf, unsigned int length); + +/** + * This function completes a request. It call's the request call back. + */ +void request_done(dwc_otg_pcd_ep_t * _ep, dwc_otg_pcd_request_t * _req, + int _status) +{ + unsigned stopped = _ep->stopped; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _ep); + if (_req->mapped) { + dma_unmap_single(_ep->pcd->gadget.dev.parent, + _req->req.dma, _req->req.length, + _ep->dwc_ep.is_in + ? DMA_TO_DEVICE + : DMA_FROM_DEVICE); + _req->req.dma = DMA_ADDR_INVALID; + _req->mapped = 0; + } else + dma_sync_single_for_cpu(_ep->pcd->gadget.dev.parent, + _req->req.dma, _req->req.length, + _ep->dwc_ep.is_in + ? DMA_TO_DEVICE + : DMA_FROM_DEVICE); + + list_del_init(&_req->queue); + if (_req->req.status == -EINPROGRESS) { + _req->req.status = _status; + } else { + _status = _req->req.status; + } + + /* don't modify queue heads during completion callback */ + _ep->stopped = 1; + SPIN_UNLOCK(&_ep->pcd->lock); + _req->req.complete(&_ep->ep, &_req->req); + SPIN_LOCK(&_ep->pcd->lock); + if (_ep->pcd->request_pending > 0) { + --_ep->pcd->request_pending; + } + _ep->stopped = stopped; + +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * Finally, when the current request is done, mark this endpoint + * as not active, so that new requests can be processed. + */ + _ep->dwc_ep.active = 0; +#endif +} + +/** + * This function terminates all the requsts in the EP request queue. + */ +void request_nuke(dwc_otg_pcd_ep_t * _ep) +{ + dwc_otg_pcd_request_t * req; + _ep->stopped = 1; + /* called with irqs blocked?? */ + while (!list_empty(&_ep->queue)) { + req = list_entry(_ep->queue.next, dwc_otg_pcd_request_t, queue); + request_done(_ep, req, -ESHUTDOWN); + } +} + +/* USB Endpoint Operations */ +/* + * The following sections briefly describe the behavior of the Gadget + * API endpoint operations implemented in the DWC_otg driver + * software. Detailed descriptions of the generic behavior of each of + * these functions can be found in the Linux header file + * include/linux/usb_gadget.h. + * + * The Gadget API provides wrapper functions for each of the function + * pointers defined in usb_ep_ops. The Gadget Driver calls the wrapper + * function, which then calls the underlying PCD function. The + * following sections are named according to the wrapper + * functions. Within each section, the corresponding DWC_otg PCD + * function name is specified. + * + */ + +/** + * This function assigns periodic Tx FIFO to an periodic EP + * in shared Tx FIFO mode + */ +static uint32_t assign_perio_tx_fifo(dwc_otg_core_if_t * core_if) +{ + uint32_t PerTxMsk = 1; + int i; + for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; ++i) { + if ((PerTxMsk & core_if->p_tx_msk) == 0) { + core_if->p_tx_msk |= PerTxMsk; + return i + 1; + } + PerTxMsk <<= 1; + } + return 0; +} + +/** + * This function releases periodic Tx FIFO + * in shared Tx FIFO mode + */ +static void release_perio_tx_fifo(dwc_otg_core_if_t * core_if, + uint32_t fifo_num) +{ + core_if->p_tx_msk = (core_if->p_tx_msk & (1 << (fifo_num - 1))) ^ core_if->p_tx_msk; +} + +/** + * This function assigns periodic Tx FIFO to an periodic EP + * in shared Tx FIFO mode + */ +static uint32_t assign_tx_fifo(dwc_otg_core_if_t * core_if) +{ + uint32_t TxMsk = 1; + int i; + for (i = 0; i < core_if->hwcfg4.b.num_in_eps; ++i) { + if ((TxMsk & core_if->tx_msk) == 0) { + core_if->tx_msk |= TxMsk; + return i + 1; + } + TxMsk <<= 1; + } + return 0; +} + +/** + * This function releases periodic Tx FIFO + * in shared Tx FIFO mode + */ +static void release_tx_fifo(dwc_otg_core_if_t * core_if, uint32_t fifo_num) +{ + core_if->tx_msk = (core_if->tx_msk & (1 << (fifo_num - 1))) ^ core_if->tx_msk; +} + +/** + * This function is called by the Gadget Driver for each EP to be + * configured for the current configuration (SET_CONFIGURATION). + * + * This function initializes the dwc_otg_ep_t data structure, and then + * calls dwc_otg_ep_activate. + */ +static int dwc_otg_pcd_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *_desc) +{ + dwc_otg_pcd_ep_t * ep = 0; + dwc_otg_pcd_t * pcd = 0; + unsigned long flags; + DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, _ep, _desc); + ep = container_of(_ep, dwc_otg_pcd_ep_t, ep); + if (!_ep || !_desc || ep->desc + || _desc->bDescriptorType != USB_DT_ENDPOINT) { + DWC_WARN("%s, bad ep or descriptor\n", __func__); + return -EINVAL; + } + if (ep == &ep->pcd->ep0) { + DWC_WARN("%s, bad ep(0)\n", __func__); + return -EINVAL; + } + + /* Check FIFO size? */ + if (!_desc->wMaxPacketSize) { + DWC_WARN("%s, bad %s maxpacket\n", __func__, _ep->name); + return -ERANGE; + } + pcd = ep->pcd; + if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) { + DWC_WARN("%s, bogus device state\n", __func__); + return -ESHUTDOWN; + } + SPIN_LOCK_IRQSAVE(&pcd->lock, flags); + ep->desc = _desc; + ep->ep.maxpacket = le16_to_cpu(_desc->wMaxPacketSize); + + /* + * Activate the EP + */ + ep->stopped = 0; + ep->dwc_ep.is_in = (USB_DIR_IN & _desc->bEndpointAddress) != 0; + ep->dwc_ep.maxpacket = ep->ep.maxpacket; + ep->dwc_ep.type = _desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + if (ep->dwc_ep.is_in) { + if (!pcd->otg_dev->core_if->en_multiple_tx_fifo) { + ep->dwc_ep.tx_fifo_num = 0; + if ((_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == + USB_ENDPOINT_XFER_ISOC) { + /* + * if ISOC EP then assign a Periodic Tx FIFO. + */ + ep->dwc_ep.tx_fifo_num = assign_perio_tx_fifo(pcd->otg_dev->core_if); + } + } else { + /* + * if Dedicated FIFOs mode is on then assign a Tx FIFO. + */ + ep->dwc_ep.tx_fifo_num = assign_tx_fifo(pcd->otg_dev->core_if); + } + } + + /* Set initial data PID. */ + if ((_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == + USB_ENDPOINT_XFER_BULK) { + ep->dwc_ep.data_pid_start = 0; + } + DWC_DEBUGPL(DBG_PCD, "Activate %s-%s: type=%d, mps=%d desc=%p\n", + ep->ep.name, (ep->dwc_ep.is_in ? "IN" : "OUT"), + ep->dwc_ep.type, ep->dwc_ep.maxpacket, ep->desc); + dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep); + SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags); + return 0; +} + + +/** + * This function is called when an EP is disabled due to disconnect or + * change in configuration. Any pending requests will terminate with a + * status of -ESHUTDOWN. + * + * This function modifies the dwc_otg_ep_t data structure for this EP, + * and then calls dwc_otg_ep_deactivate. + */ +static int dwc_otg_pcd_ep_disable(struct usb_ep *_ep) +{ + dwc_otg_pcd_ep_t * ep; + unsigned long flags; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _ep); + ep = container_of(_ep, dwc_otg_pcd_ep_t, ep); + if (!_ep || !ep->desc) { + DWC_DEBUGPL(DBG_PCD, "%s, %s not enabled\n", __func__, + _ep ? ep->ep.name : NULL); + return -EINVAL; + } + SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags); + request_nuke(ep); + dwc_otg_ep_deactivate(GET_CORE_IF(ep->pcd), &ep->dwc_ep); + ep->desc = 0; + ep->stopped = 1; + if (ep->dwc_ep.is_in) { + release_perio_tx_fifo(GET_CORE_IF(ep->pcd),ep->dwc_ep.tx_fifo_num); + release_tx_fifo(GET_CORE_IF(ep->pcd), ep->dwc_ep.tx_fifo_num); + } + SPIN_UNLOCK_IRQRESTORE(&ep->pcd->lock, flags); + DWC_DEBUGPL(DBG_PCD, "%s disabled\n", _ep->name); + return 0; +} + + +/** + * This function allocates a request object to use with the specified + * endpoint. + * + * @param _ep The endpoint to be used with with the request + * @param _gfp_flags the GFP_* flags to use. + */ +static struct usb_request *dwc_otg_pcd_alloc_request(struct usb_ep *_ep, + gfp_t _gfp_flags) +{ + dwc_otg_pcd_request_t * req; + DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d)\n", __func__, _ep, _gfp_flags); + if (0 == _ep) { + DWC_WARN("%s() %s\n", __func__, "Invalid EP!\n"); + return 0; + } + req = kmalloc(sizeof(dwc_otg_pcd_request_t), _gfp_flags); + if (0 == req) { + DWC_WARN("%s() %s\n", __func__,"request allocation failed!\n"); + return 0; + } + memset(req, 0, sizeof(dwc_otg_pcd_request_t)); + req->req.dma = DMA_ADDR_INVALID; + INIT_LIST_HEAD(&req->queue); + return &req->req; +} + + +/** + * This function frees a request object. + * + * @param _ep The endpoint associated with the request + * @param _req The request being freed + */ +static void dwc_otg_pcd_free_request(struct usb_ep *_ep, + struct usb_request *_req) +{ + dwc_otg_pcd_request_t * req; + DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, _ep, _req); + if (0 == _ep || 0 == _req) { + DWC_WARN("%s() %s\n", __func__,"Invalid ep or req argument!\n"); + return; + } + req = container_of(_req, dwc_otg_pcd_request_t, req); + kfree(req); +} + + +/** + * This function is used to submit an I/O Request to an EP. + * + * - When the request completes the request's completion callback + * is called to return the request to the driver. + * - An EP, except control EPs, may have multiple requests + * pending. + * - Once submitted the request cannot be examined or modified. + * - Each request is turned into one or more packets. + * - A BULK EP can queue any amount of data; the transfer is + * packetized. + * - Zero length Packets are specified with the request 'zero' + * flag. + */ +static int dwc_otg_pcd_ep_queue(struct usb_ep *_ep, struct usb_request *_req, + gfp_t _gfp_flags) +{ + int prevented = 0; + dwc_otg_pcd_request_t * req; + dwc_otg_pcd_ep_t * ep; + dwc_otg_pcd_t * pcd; + unsigned long flags = 0; + + DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p,%d)\n", __func__, _ep, _req, + _gfp_flags); + req = container_of(_req, dwc_otg_pcd_request_t, req); + if (!_req || !_req->complete || !_req->buf + || !list_empty(&req->queue)) { + DWC_WARN("%s, bad params\n", __func__); + return -EINVAL; + } + ep = container_of(_ep, dwc_otg_pcd_ep_t, ep); + if (!_ep || (!ep->desc && ep->dwc_ep.num != 0)) { + DWC_WARN("%s, bad ep\n", __func__); + return -EINVAL; + } + pcd = ep->pcd; + if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) { + DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n", pcd->gadget.speed); + DWC_WARN("%s, bogus device state\n", __func__); + return -ESHUTDOWN; + } + DWC_DEBUGPL(DBG_PCD, "%s queue req %p, len %d buf %p\n", _ep->name, + _req, _req->length, _req->buf); + if (!GET_CORE_IF(pcd)->core_params->opt) { + if (ep->dwc_ep.num != 0) { + DWC_ERROR("%s queue req %p, len %d buf %p\n", + _ep->name, _req, _req->length, _req->buf); + } + } + SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags); + +#if defined(CONFIG_DWC_DEBUG) & defined(VERBOSE) + dump_msg(_req->buf, _req->length); + +#endif /* */ + _req->status = -EINPROGRESS; + _req->actual = 0; + + /* + * For EP0 IN without premature status, zlp is required? + */ + if (ep->dwc_ep.num == 0 && ep->dwc_ep.is_in) { + DWC_DEBUGPL(DBG_PCDV, "%s-OUT ZLP\n", _ep->name); + //_req->zero = 1; + } + + /* map virtual address to hardware */ + if (_req->dma == DMA_ADDR_INVALID) { + _req->dma = dma_map_single(ep->pcd->gadget.dev.parent, + _req->buf, + _req->length, + ep->dwc_ep.is_in + ? DMA_TO_DEVICE : + DMA_FROM_DEVICE); + req->mapped = 1; + } else { + dma_sync_single_for_device(ep->pcd->gadget.dev.parent, + _req->dma, _req->length, + ep->dwc_ep.is_in + ? DMA_TO_DEVICE : + DMA_FROM_DEVICE); + req->mapped = 0; + } + + /* Start the transfer */ + if (list_empty(&ep->queue) && !ep->stopped) { + /* EP0 Transfer? */ + if (ep->dwc_ep.num == 0) { + switch (pcd->ep0state) { + case EP0_IN_DATA_PHASE: + DWC_DEBUGPL(DBG_PCD, "%s ep0: EP0_IN_DATA_PHASE\n", + __func__); + break; + case EP0_OUT_DATA_PHASE: + DWC_DEBUGPL(DBG_PCD, "%s ep0: EP0_OUT_DATA_PHASE\n", + __func__); + if (pcd->request_config) { + /* Complete STATUS PHASE */ + ep->dwc_ep.is_in = 1; + pcd->ep0state = EP0_STATUS; + } + break; + default: + DWC_DEBUGPL(DBG_ANY, "ep0: odd state %d\n", + pcd->ep0state); + SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags); + return -EL2HLT; + } + ep->dwc_ep.dma_addr = _req->dma; + ep->dwc_ep.start_xfer_buff = _req->buf; + ep->dwc_ep.xfer_buff = _req->buf; + ep->dwc_ep.xfer_len = _req->length; + ep->dwc_ep.xfer_count = 0; + ep->dwc_ep.sent_zlp = 0; + ep->dwc_ep.total_len = ep->dwc_ep.xfer_len; + dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), + &ep->dwc_ep); + } else { + /* Setup and start the Transfer */ + ep->dwc_ep.dma_addr = _req->dma; + ep->dwc_ep.start_xfer_buff = _req->buf; + ep->dwc_ep.xfer_buff = _req->buf; + ep->dwc_ep.xfer_len = _req->length; + ep->dwc_ep.xfer_count = 0; + ep->dwc_ep.sent_zlp = 0; + ep->dwc_ep.total_len = ep->dwc_ep.xfer_len; + dwc_otg_ep_start_transfer(GET_CORE_IF(pcd), + &ep->dwc_ep); + } + } + if ((req != 0) || prevented) { + ++pcd->request_pending; + list_add_tail(&req->queue, &ep->queue); + if (ep->dwc_ep.is_in && ep->stopped + && !(GET_CORE_IF(pcd)->dma_enable)) { + /** @todo NGS Create a function for this. */ + diepmsk_data_t diepmsk = {.d32 = 0}; + diepmsk.b.intktxfemp = 1; + dwc_modify_reg32(&GET_CORE_IF(pcd)->dev_if->dev_global_regs->diepmsk, 0, + diepmsk.d32); + } + } + SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags); + return 0; +} + +/** + * This function cancels an I/O request from an EP. + */ +static int dwc_otg_pcd_ep_dequeue(struct usb_ep *_ep, + struct usb_request *_req) +{ + dwc_otg_pcd_request_t * req; + dwc_otg_pcd_ep_t * ep; + dwc_otg_pcd_t * pcd; + unsigned long flags; + DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, _ep, _req); + ep = container_of(_ep, dwc_otg_pcd_ep_t, ep); + if (!_ep || !_req || (!ep->desc && ep->dwc_ep.num != 0)) { + DWC_WARN("%s, bad argument\n", __func__); + return -EINVAL; + } + pcd = ep->pcd; + if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) { + DWC_WARN("%s, bogus device state\n", __func__); + return -ESHUTDOWN; + } + SPIN_LOCK_IRQSAVE(&pcd->lock, flags); + DWC_DEBUGPL(DBG_PCDV, "%s %s %s %p\n", __func__, _ep->name, + ep->dwc_ep.is_in ? "IN" : "OUT", _req); + + /* 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(&pcd->lock, flags); + return -EINVAL; + } + if (!list_empty(&req->queue)) { + request_done(ep, req, -ECONNRESET); + } else { + req = 0; + } + SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags); + return req ? 0 : -EOPNOTSUPP; +} + +/** + * usb_ep_set_halt stalls an endpoint. + * + * usb_ep_clear_halt clears an endpoint halt and resets its data + * toggle. + * + * Both of these functions are implemented with the same underlying + * function. The behavior depends on the value argument. + * + * @param[in] _ep the Endpoint to halt or clear halt. + * @param[in] _value + * - 0 means clear_halt. + * - 1 means set_halt, + * - 2 means clear stall lock flag. + * - 3 means set stall lock flag. + */ +static int dwc_otg_pcd_ep_set_halt(struct usb_ep *_ep, int _value) +{ + int retval = 0; + unsigned long flags; + dwc_otg_pcd_ep_t * ep = 0; + DWC_DEBUGPL(DBG_PCD, "HALT %s %d\n", _ep->name, _value); + ep = container_of(_ep, dwc_otg_pcd_ep_t, ep); + if (!_ep || (!ep->desc && ep != &ep->pcd->ep0) + || ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + DWC_WARN("%s, bad ep\n", __func__); + return -EINVAL; + } + SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags); + if (ep->dwc_ep.is_in && !list_empty(&ep->queue)) { + DWC_WARN("%s() %s XFer In process\n", __func__, _ep->name); + retval = -EAGAIN; + } else if (_value == 0) { + dwc_otg_ep_clear_stall(ep->pcd->otg_dev->core_if,&ep->dwc_ep); + } else if (_value == 1) { + if (ep->dwc_ep.num == 0) { + ep->pcd->ep0state = EP0_STALL; + } + ep->stopped = 1; + dwc_otg_ep_set_stall(ep->pcd->otg_dev->core_if, &ep->dwc_ep); + } else if (_value == 2) { + ep->dwc_ep.stall_clear_flag = 0; + } else if (_value == 3) { + ep->dwc_ep.stall_clear_flag = 1; + } + SPIN_UNLOCK_IRQRESTORE(&ep->pcd->lock, flags); + return retval; +} + +static struct usb_ep_ops dwc_otg_pcd_ep_ops = +{ + .enable = dwc_otg_pcd_ep_enable, + .disable = dwc_otg_pcd_ep_disable, + .alloc_request = dwc_otg_pcd_alloc_request, + .free_request = dwc_otg_pcd_free_request, + .queue = dwc_otg_pcd_ep_queue, + .dequeue = dwc_otg_pcd_ep_dequeue, + .set_halt = dwc_otg_pcd_ep_set_halt, + .fifo_status = 0, + .fifo_flush = 0, +}; + +/* Gadget Operations */ +/** + * The following gadget operations will be implemented in the DWC_otg + * PCD. Functions in the API that are not described below are not + * implemented. + * + * The Gadget API provides wrapper functions for each of the function + * pointers defined in usb_gadget_ops. The Gadget Driver calls the + * wrapper function, which then calls the underlying PCD function. The + * following sections are named according to the wrapper functions + * (except for ioctl, which doesn't have a wrapper function). Within + * each section, the corresponding DWC_otg PCD function name is + * specified. + * + */ + +/** + *Gets the USB Frame number of the last SOF. + */ +static int dwc_otg_pcd_get_frame(struct usb_gadget *_gadget) +{ + dwc_otg_pcd_t * pcd; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _gadget); + if (_gadget == 0) { + return -ENODEV; + } else { + pcd = container_of(_gadget, dwc_otg_pcd_t, gadget); + dwc_otg_get_frame_number(GET_CORE_IF(pcd)); + } + return 0; +} +void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * _pcd) +{ + uint32_t * addr = (uint32_t *) &(GET_CORE_IF(_pcd)->core_global_regs->gotgctl); + gotgctl_data_t mem; + gotgctl_data_t val; + val.d32 = dwc_read_reg32(addr); + if (val.b.sesreq) { + DWC_ERROR("Session Request Already active!\n"); + return; + } + DWC_NOTICE("Session Request Initated\n"); + mem.d32 = dwc_read_reg32(addr); + mem.b.sesreq = 1; + dwc_write_reg32(addr, mem.d32); + + /* Start the SRP timer */ + dwc_otg_pcd_start_srp_timer(_pcd); + return; +} +void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * _pcd, int set) +{ + dctl_data_t dctl = {.d32 = 0}; + volatile uint32_t *addr = &(GET_CORE_IF(_pcd)->dev_if->dev_global_regs->dctl); + if (dwc_otg_is_device_mode(GET_CORE_IF(_pcd))) { + if (_pcd->remote_wakeup_enable) { + if (set) { + dctl.b.rmtwkupsig = 1; + dwc_modify_reg32(addr, 0, dctl.d32); + DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n"); + mdelay(1); + dwc_modify_reg32(addr, dctl.d32, 0); + DWC_DEBUGPL(DBG_PCD, "Clear Remote Wakeup\n"); + } else { + } + } else { + DWC_DEBUGPL(DBG_PCD, "Remote Wakeup is disabled\n"); + } + } + return; +} + + +/** + * Initiates Session Request Protocol (SRP) to wakeup the host if no + * session is in progress. If a session is already in progress, but + * the device is suspended, remote wakeup signaling is started. + * + */ +static int dwc_otg_pcd_wakeup(struct usb_gadget *_gadget) +{ + unsigned long flags; + dwc_otg_pcd_t * pcd; + dsts_data_t dsts; + gotgctl_data_t gotgctl; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _gadget); + if (_gadget == 0) { + return -ENODEV; + } else { + pcd = container_of(_gadget, dwc_otg_pcd_t, gadget); + } + SPIN_LOCK_IRQSAVE(&pcd->lock, flags); + + /* + * This function starts the Protocol if no session is in progress. If + * a session is already in progress, but the device is suspended, + * remote wakeup signaling is started. + */ + + /* Check if valid session */ + gotgctl.d32 = dwc_read_reg32(&(GET_CORE_IF(pcd)->core_global_regs->gotgctl)); + if (gotgctl.b.bsesvld) { + + /* Check if suspend state */ + dsts.d32 = dwc_read_reg32(&(GET_CORE_IF(pcd)->dev_if->dev_global_regs->dsts)); + if (dsts.b.suspsts) { + dwc_otg_pcd_remote_wakeup(pcd, 1); + } + } else { + dwc_otg_pcd_initiate_srp(pcd); + } + SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags); + return 0; +} + +static const struct usb_gadget_ops dwc_otg_pcd_ops = +{ + .get_frame = dwc_otg_pcd_get_frame, + .wakeup = dwc_otg_pcd_wakeup, + // current versions must always be self-powered +}; + +/** + * This function updates the otg values in the gadget structure. + */ +void dwc_otg_pcd_update_otg(dwc_otg_pcd_t * _pcd, const unsigned _reset) +{ + if (!_pcd->gadget.is_otg) + return; + if (_reset) { + _pcd->b_hnp_enable = 0; + _pcd->a_hnp_support = 0; + _pcd->a_alt_hnp_support = 0; + } + _pcd->gadget.b_hnp_enable = _pcd->b_hnp_enable; + _pcd->gadget.a_hnp_support = _pcd->a_hnp_support; + _pcd->gadget.a_alt_hnp_support = _pcd->a_alt_hnp_support; +} + +/** + * This function is the top level PCD interrupt handler. + */ +static irqreturn_t dwc_otg_pcd_irq(int _irq, void *_dev) +{ + dwc_otg_pcd_t * pcd = _dev; + int32_t retval = IRQ_NONE; + retval = dwc_otg_pcd_handle_intr(pcd); + return IRQ_RETVAL(retval); +} + +/** + * PCD Callback function for initializing the PCD when switching to + * device mode. + * + * @param _p void pointer to the <code>dwc_otg_pcd_t</code> + */ +static int32_t dwc_otg_pcd_start_cb(void *_p) +{ + dwc_otg_pcd_t * pcd = (dwc_otg_pcd_t *) _p; + + /* + * Initialized the Core for Device mode. + */ + if (dwc_otg_is_device_mode(GET_CORE_IF(pcd))) { + dwc_otg_core_dev_init(GET_CORE_IF(pcd)); + } + return 1; +} + +/** + * PCD Callback function for stopping the PCD when switching to Host + * mode. + * + * @param _p void pointer to the <code>dwc_otg_pcd_t</code> + */ +static int32_t dwc_otg_pcd_stop_cb(void *_p) +{ + dwc_otg_pcd_t * pcd = (dwc_otg_pcd_t *) _p; + extern void dwc_otg_pcd_stop(dwc_otg_pcd_t * _pcd); + dwc_otg_pcd_stop(pcd); + return 1; +} + +/** + * PCD Callback function for notifying the PCD when resuming from + * suspend. + * + * @param _p void pointer to the <code>dwc_otg_pcd_t</code> + */ +static int32_t dwc_otg_pcd_suspend_cb(void *_p) +{ + dwc_otg_pcd_t * pcd = (dwc_otg_pcd_t *) _p; + if (pcd->driver && pcd->driver->resume) { + SPIN_UNLOCK(&pcd->lock); + pcd->driver->suspend(&pcd->gadget); + SPIN_LOCK(&pcd->lock); + } + return 1; +} + + +/** + * PCD Callback function for notifying the PCD when resuming from + * suspend. + * + * @param _p void pointer to the <code>dwc_otg_pcd_t</code> + */ +static int32_t dwc_otg_pcd_resume_cb(void *_p) +{ + dwc_otg_pcd_t * pcd = (dwc_otg_pcd_t *) _p; + if (pcd->driver && pcd->driver->resume) { + SPIN_UNLOCK(&pcd->lock); + pcd->driver->resume(&pcd->gadget); + SPIN_LOCK(&pcd->lock); + } + + /* Stop the SRP timeout timer. */ + if ((GET_CORE_IF(pcd)->core_params->phy_type != + DWC_PHY_TYPE_PARAM_FS) || (!GET_CORE_IF(pcd)->core_params->i2c_enable)) { + if (GET_CORE_IF(pcd)->srp_timer_started) { + GET_CORE_IF(pcd)->srp_timer_started = 0; + del_timer(&pcd->srp_timer); + } + } + return 1; +} + +/** + * PCD Callback structure for handling mode switching. + */ +static dwc_otg_cil_callbacks_t pcd_callbacks = +{ + .start = dwc_otg_pcd_start_cb, + .stop = dwc_otg_pcd_stop_cb, + .suspend = dwc_otg_pcd_suspend_cb, + .resume_wakeup = dwc_otg_pcd_resume_cb, + .p = 0, /* Set at registration */ +}; + +/** + * This function is called when the SRP timer expires. The SRP should + * complete within 6 seconds. + */ +static void srp_timeout(unsigned long _ptr) +{ + gotgctl_data_t gotgctl; + dwc_otg_core_if_t * core_if = (dwc_otg_core_if_t *) _ptr; + volatile uint32_t *addr = &core_if->core_global_regs->gotgctl; + gotgctl.d32 = dwc_read_reg32(addr); + core_if->srp_timer_started = 0; + if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) && + (core_if->core_params->i2c_enable)) { + DWC_PRINT("SRP Timeout\n"); + if ((core_if->srp_success) && (gotgctl.b.bsesvld)) { + if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) { + core_if->pcd_cb->resume_wakeup(core_if-> + pcd_cb->p); + } + + /* Clear Session Request */ + gotgctl.d32 = 0; + gotgctl.b.sesreq = 1; + dwc_modify_reg32(&core_if->core_global_regs->gotgctl,gotgctl.d32, 0); + core_if->srp_success = 0; + } else { + DWC_ERROR("Device not connected/responding\n"); + gotgctl.b.sesreq = 0; + dwc_write_reg32(addr, gotgctl.d32); + } + } else if (gotgctl.b.sesreq) { + DWC_PRINT("SRP Timeout\n"); + DWC_ERROR("Device not connected/responding\n"); + gotgctl.b.sesreq = 0; + dwc_write_reg32(addr, gotgctl.d32); + } else { + DWC_PRINT(" SRP GOTGCTL=%0x\n", gotgctl.d32); + } +} + +/** + * Start the SRP timer to detect when the SRP does not complete within + * 6 seconds. + * + * @param _pcd the pcd structure. + */ +void dwc_otg_pcd_start_srp_timer(dwc_otg_pcd_t * _pcd) +{ + struct timer_list *srp_timer = &_pcd->srp_timer; + GET_CORE_IF(_pcd)->srp_timer_started = 1; + init_timer(srp_timer); + srp_timer->function = srp_timeout; + srp_timer->data = (unsigned long)GET_CORE_IF(_pcd); + srp_timer->expires = jiffies + (HZ * 6); + add_timer(srp_timer); +} + +/** + * Tasklet + * + */ +extern void start_next_request(dwc_otg_pcd_ep_t * _ep); + +static void start_xfer_tasklet_func(unsigned long data) +{ + dwc_otg_pcd_t * pcd = (dwc_otg_pcd_t *) data; + dwc_otg_core_if_t * core_if = pcd->otg_dev->core_if; + int i; + depctl_data_t diepctl; + DWC_DEBUGPL(DBG_PCDV, "Start xfer tasklet\n"); + diepctl.d32 = + dwc_read_reg32(&core_if->dev_if->in_ep_regs[0]->diepctl); + if (pcd->ep0.queue_sof) { + pcd->ep0.queue_sof = 0; + start_next_request(&pcd->ep0); + // break; + } + for (i = 0; i < core_if->dev_if->num_in_eps; i++) { + depctl_data_t diepctl; + diepctl.d32 = + dwc_read_reg32(&core_if->dev_if->in_ep_regs[i]->diepctl); + if (pcd->in_ep[i].queue_sof) { + pcd->in_ep[i].queue_sof = 0; + start_next_request(&pcd->in_ep[i]); + // break; + } + } + return; +} + +static struct tasklet_struct start_xfer_tasklet = +{ + .next = NULL, + .state = 0, + .count = ATOMIC_INIT(0), + .func = start_xfer_tasklet_func, + .data = 0, +}; + +/** + * This function initialized the pcd Dp structures to there default + * state. + * + * @param _pcd the pcd structure. + */ +void dwc_otg_pcd_reinit(dwc_otg_pcd_t * _pcd) +{ + static const char *names[] = + { + "ep0", "ep1in", "ep2in", "ep3in", "ep4in", "ep5in", + "ep6in", "ep7in", "ep8in", "ep9in", "ep10in", "ep11in", "ep12in", "ep13in", + "ep14in", "ep15in", "ep1out", "ep2out", "ep3out", "ep4out", "ep5out", + "ep6out", "ep7out", "ep8out", "ep9out", "ep10out", "ep11out", "ep12out", + "ep13out", "ep14out", "ep15out" + }; + + int i; + int in_ep_cntr, out_ep_cntr; + uint32_t hwcfg1; + uint32_t num_in_eps = (GET_CORE_IF(_pcd))->dev_if->num_in_eps; + uint32_t num_out_eps = (GET_CORE_IF(_pcd))->dev_if->num_out_eps; + dwc_otg_pcd_ep_t * ep; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd); + INIT_LIST_HEAD(&_pcd->gadget.ep_list); + _pcd->gadget.ep0 = &_pcd->ep0.ep; + _pcd->gadget.speed = USB_SPEED_UNKNOWN; + INIT_LIST_HEAD(&_pcd->gadget.ep0->ep_list); + + /** + * Initialize the EP0 structure. + */ + ep = &_pcd->ep0; + + /* Init EP structure */ + ep->desc = 0; + ep->pcd = _pcd; + ep->stopped = 1; + + /* Init DWC ep structure */ + ep->dwc_ep.num = 0; + ep->dwc_ep.active = 0; + ep->dwc_ep.tx_fifo_num = 0; + + /* Control until ep is actvated */ + ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL; + ep->dwc_ep.maxpacket = MAX_PACKET_SIZE; + ep->dwc_ep.dma_addr = 0; + ep->dwc_ep.start_xfer_buff = 0; + ep->dwc_ep.xfer_buff = 0; + ep->dwc_ep.xfer_len = 0; + ep->dwc_ep.xfer_count = 0; + ep->dwc_ep.sent_zlp = 0; + ep->dwc_ep.total_len = 0; + ep->queue_sof = 0; + + /* Init the usb_ep structure. */ + ep->ep.name = names[0]; + ep->ep.ops = &dwc_otg_pcd_ep_ops; + + /** + * @todo NGS: What should the max packet size be set to + * here? Before EP type is set? + */ + ep->ep.maxpacket = MAX_PACKET_SIZE; + list_add_tail(&ep->ep.ep_list, &_pcd->gadget.ep_list); + INIT_LIST_HEAD(&ep->queue); + + /** + * Initialize the EP structures. + */ + in_ep_cntr = 0; + hwcfg1 = (GET_CORE_IF(_pcd))->hwcfg1.d32 >> 3; + for (i = 1; in_ep_cntr < num_in_eps; i++) { + if ((hwcfg1 & 0x1) == 0) { + dwc_otg_pcd_ep_t * ep = &_pcd->in_ep[in_ep_cntr]; + in_ep_cntr++; + + /* Init EP structure */ + ep->desc = 0; + ep->pcd = _pcd; + ep->stopped = 1; + + /* Init DWC ep structure */ + ep->dwc_ep.is_in = 1; + ep->dwc_ep.num = i; + ep->dwc_ep.active = 0; + ep->dwc_ep.tx_fifo_num = 0; + + /* Control until ep is actvated */ + ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL; + ep->dwc_ep.maxpacket = MAX_PACKET_SIZE; + ep->dwc_ep.dma_addr = 0; + ep->dwc_ep.start_xfer_buff = 0; + ep->dwc_ep.xfer_buff = 0; + ep->dwc_ep.xfer_len = 0; + ep->dwc_ep.xfer_count = 0; + ep->dwc_ep.sent_zlp = 0; + ep->dwc_ep.total_len = 0; + ep->queue_sof = 0; + + /* Init the usb_ep structure. */ + /** + * @todo NGS: Add direction to EP, based on contents + * of HWCFG1. Need a copy of HWCFG1 in pcd structure? + * sprintf( ";r + */ + ep->ep.name = names[i]; + ep->ep.ops = &dwc_otg_pcd_ep_ops; + + /** + * @todo NGS: What should the max packet size be set to + * here? Before EP type is set? + */ + ep->ep.maxpacket = MAX_PACKET_SIZE; + list_add_tail(&ep->ep.ep_list, &_pcd->gadget.ep_list); + INIT_LIST_HEAD(&ep->queue); + } + hwcfg1 >>= 2; + } + out_ep_cntr = 0; + hwcfg1 = (GET_CORE_IF(_pcd))->hwcfg1.d32 >> 2; + for (i = 1; out_ep_cntr < num_out_eps; i++) { + if ((hwcfg1 & 0x1) == 0) { + dwc_otg_pcd_ep_t * ep = &_pcd->out_ep[out_ep_cntr]; + out_ep_cntr++; + + /* Init EP structure */ + ep->desc = 0; + ep->pcd = _pcd; + ep->stopped = 1; + + /* Init DWC ep structure */ + ep->dwc_ep.is_in = 0; + ep->dwc_ep.num = i; + ep->dwc_ep.active = 0; + ep->dwc_ep.tx_fifo_num = 0; + + /* Control until ep is actvated */ + ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL; + ep->dwc_ep.maxpacket = MAX_PACKET_SIZE; + ep->dwc_ep.dma_addr = 0; + ep->dwc_ep.start_xfer_buff = 0; + ep->dwc_ep.xfer_buff = 0; + ep->dwc_ep.xfer_len = 0; + ep->dwc_ep.xfer_count = 0; + ep->dwc_ep.sent_zlp = 0; + ep->dwc_ep.total_len = 0; + ep->queue_sof = 0; + + /* Init the usb_ep structure. */ + /** + * @todo NGS: Add direction to EP, based on contents + * of HWCFG1. Need a copy of HWCFG1 in pcd structure? + * sprintf( ";r + */ + ep->ep.name = names[15 + i]; + ep->ep.ops = &dwc_otg_pcd_ep_ops; + + /** + * @todo NGS: What should the max packet size be set to + * here? Before EP type is set? + */ + ep->ep.maxpacket = MAX_PACKET_SIZE; + list_add_tail(&ep->ep.ep_list, &_pcd->gadget.ep_list); + INIT_LIST_HEAD(&ep->queue); + } + hwcfg1 >>= 2; + } + + /* remove ep0 from the list. There is a ep0 pointer. */ + list_del_init(&_pcd->ep0.ep.ep_list); + _pcd->ep0state = EP0_DISCONNECT; + _pcd->ep0.ep.maxpacket = MAX_EP0_SIZE; + _pcd->ep0.dwc_ep.maxpacket = MAX_EP0_SIZE; + _pcd->ep0.dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL; +} + +/** + * This function releases the Gadget device. + * required by device_unregister(). + * + * @todo Should this do something? Should it free the PCD? + */ +static void dwc_otg_pcd_gadget_release(struct device *_dev) +{ + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev); +} + +/** + * This function initialized the PCD portion of the driver. + * + */ +int __init dwc_otg_pcd_init(struct device *_dev) +{ + static char pcd_name[] = "dwc_otg_pcd"; + dwc_otg_pcd_t * pcd; + dwc_otg_device_t * otg_dev = dev_get_drvdata(_dev); + int retval = 0; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev); + + /* + * Allocate PCD structure + */ + pcd = kmalloc(sizeof(dwc_otg_pcd_t), GFP_KERNEL); + if (pcd == 0) { + return -ENOMEM; + } + memset(pcd, 0, sizeof(dwc_otg_pcd_t)); + spin_lock_init(&pcd->lock); + otg_dev->pcd = pcd; + s_pcd = pcd; + pcd->gadget.name = pcd_name; + dev_set_name(&pcd->gadget.dev, "gadget"); + pcd->otg_dev = dev_get_drvdata(_dev); + pcd->gadget.dev.parent = _dev; + pcd->gadget.dev.release = dwc_otg_pcd_gadget_release; + pcd->gadget.ops = &dwc_otg_pcd_ops; + if (GET_CORE_IF(pcd)->hwcfg4.b.ded_fifo_en) { + DWC_PRINT("Dedicated Tx FIFOs mode\n"); + } else { + DWC_PRINT("Shared Tx FIFO mode\n"); + } + + /* If the module is set to FS or if the PHY_TYPE is FS then the gadget + * should not report as dual-speed capable. replace the following line + * with the block of code below it once the software is debugged for + * this. If is_dualspeed = 0 then the gadget driver should not report + * a device qualifier descriptor when queried. */ + if ((GET_CORE_IF(pcd)->core_params->speed == DWC_SPEED_PARAM_FULL) + || ((GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type == 2) + && (GET_CORE_IF(pcd)->hwcfg2.b.fs_phy_type == 1) + && (GET_CORE_IF(pcd)->core_params->ulpi_fs_ls))) { + pcd->gadget.is_dualspeed = 0; + } else { + pcd->gadget.is_dualspeed = 1; + } + if ((otg_dev->core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE) + || (otg_dev->core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST) + || (otg_dev->core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) + || (otg_dev->core_if->hwcfg2.b.op_mode == + DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) { + pcd->gadget.is_otg = 0; + } else { + pcd->gadget.is_otg = 1; + } + pcd->driver = 0; + + /* Register the gadget device */ + retval = device_register(&pcd->gadget.dev); + + /* + * Initialized the Core for Device mode. + */ + if (dwc_otg_is_device_mode(GET_CORE_IF(pcd))) { + dwc_otg_core_dev_init(GET_CORE_IF(pcd)); + } + + /* + * Initialize EP structures + */ + dwc_otg_pcd_reinit(pcd); + + /* + * Register the PCD Callbacks. + */ + dwc_otg_cil_register_pcd_callbacks(otg_dev->core_if, &pcd_callbacks,pcd); + + /* + * Setup interupt handler + */ + DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n",otg_dev->irq); + retval = request_irq(otg_dev->irq, dwc_otg_pcd_irq, IRQF_SHARED, + pcd->gadget.name, pcd); + if (retval != 0) { + DWC_ERROR("request of irq%d failed\n", otg_dev->irq); + kfree(pcd); + return -EBUSY; + } + + /* + * Initialize the DMA buffer for SETUP packets + */ + if (GET_CORE_IF(pcd)->dma_enable) { + pcd->setup_pkt = dma_alloc_coherent(_dev, sizeof(*pcd->setup_pkt) * 5, + &pcd->setup_pkt_dma_handle, 0); + pcd->status_buf = dma_alloc_coherent(_dev, sizeof(uint16_t), + &pcd->status_buf_dma_handle, 0); + } else { + pcd->setup_pkt = kmalloc(sizeof(*pcd->setup_pkt) * 5, GFP_KERNEL); + pcd->status_buf = kmalloc(sizeof(uint16_t), GFP_KERNEL); + } + if (pcd->setup_pkt == 0) { + kfree(pcd); + return -ENOMEM; + } + + /* Initialize tasklet */ + start_xfer_tasklet.data = (unsigned long)pcd; + pcd->start_xfer_tasklet = &start_xfer_tasklet; + return 0; +} + +/** + * Cleanup the PCD. + */ +void dwc_otg_pcd_remove(struct device *_dev) +{ + dwc_otg_device_t * otg_dev = dev_get_drvdata(_dev); + dwc_otg_pcd_t * pcd = otg_dev->pcd; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _dev); + + /* + * Free the IRQ + */ + free_irq(otg_dev->irq, pcd); + + /* start with the driver above us */ + if (pcd->driver) { + + /* should have been done already by driver model core */ + DWC_WARN("driver '%s' is still registered\n",pcd->driver->driver.name); + usb_gadget_unregister_driver(pcd->driver); + } + device_unregister(&pcd->gadget.dev); + if (GET_CORE_IF(pcd)->dma_enable) { + dma_free_coherent(NULL, sizeof(*pcd->setup_pkt) * 5, + pcd->setup_pkt, pcd->setup_pkt_dma_handle); + dma_free_coherent(NULL, sizeof(uint16_t), pcd->status_buf, + pcd->status_buf_dma_handle); + } else { + kfree(pcd->setup_pkt); + kfree(pcd->status_buf); + } + kfree(pcd); + otg_dev->pcd = 0; +} + + +/** + * This function registers a gadget driver with the PCD. + * + * 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. + * + * @param _driver The driver being registered + */ +int usb_gadget_register_driver(struct usb_gadget_driver *_driver) +{ + int retval; + DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n", + _driver->driver.name); + if (!_driver || _driver->speed == USB_SPEED_UNKNOWN || !_driver->bind + || !_driver->disconnect || !_driver->setup) { + DWC_DEBUGPL(DBG_PCDV, "EINVAL\n"); +#if 1 + printk("_driver=0x%p speed=0x%x bind=0x%p unbind=0x%p disconnect=0x%p setup=0x%p\n", _driver, _driver->speed, _driver->bind, _driver->unbind, _driver->disconnect, _driver->setup); +#endif + return -EINVAL; + } + if (s_pcd == 0) { + DWC_DEBUGPL(DBG_PCDV, "ENODEV\n"); + return -ENODEV; + } + if (s_pcd->driver != 0) { + DWC_DEBUGPL(DBG_PCDV, "EBUSY (%p)\n", s_pcd->driver); + return -EBUSY; + } + + /* hook up the driver */ + s_pcd->driver = _driver; + s_pcd->gadget.dev.driver = &_driver->driver; + { + dwc_otg_core_if_t *_core_if = s_pcd->otg_dev->core_if; + if(_core_if) { + dwc_otg_disable_global_interrupts(_core_if); + dwc_otg_core_init(_core_if); + dwc_otg_pcd_reinit(s_pcd); + dwc_otg_enable_global_interrupts(_core_if); + if (_core_if->pcd_cb) + dwc_otg_pcd_start_cb(_core_if->pcd_cb->p); + } + + } + DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", _driver->driver.name); + retval = _driver->bind(&s_pcd->gadget); + if (retval) { + DWC_ERROR("bind to driver %s --> error %d\n", + _driver->driver.name, retval); + s_pcd->driver = 0; + s_pcd->gadget.dev.driver = 0; + return retval; + } + DWC_DEBUGPL(DBG_ANY, "registered gadget driver '%s'\n", + _driver->driver.name); + return 0; +} +EXPORT_SYMBOL(usb_gadget_register_driver); + +/** + * This function unregisters a gadget driver + * + * @param _driver The driver being unregistered + */ +int usb_gadget_unregister_driver(struct usb_gadget_driver *_driver) +{ + + //DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, _driver); + if (s_pcd == 0) { + DWC_DEBUGPL(DBG_ANY, "%s Return(%d): s_pcd==0\n", __func__,-ENODEV); + return -ENODEV; + } + if (_driver == 0 || _driver != s_pcd->driver) { + DWC_DEBUGPL(DBG_ANY, "%s Return(%d): driver?\n", __func__,-EINVAL); + return -EINVAL; + } + _driver->unbind(&s_pcd->gadget); + s_pcd->driver = 0; + DWC_DEBUGPL(DBG_ANY, "unregistered driver '%s'\n", + _driver->driver.name); + return 0; +} +EXPORT_SYMBOL(usb_gadget_unregister_driver); + +#endif /* DWC_HOST_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_pcd.h b/drivers/usb/gadget/dwc_otg/dwc_otg_pcd.h new file mode 100644 index 00000000000..a252dc01ed1 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_pcd.h @@ -0,0 +1,209 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_pcd.h $ + * $Revision: #6 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ +#ifndef CONFIG_DWC_HOST_ONLY +#if !defined(__DWC_PCD_H__) +#define __DWC_PCD_H__ + +#include <linux/types.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/interrupt.h> +#include <linux/dma-mapping.h> + +struct lm_device; +struct dwc_otg_device; + +#include "dwc_otg_cil.h" + +/** + * @file + * + * This file contains the structures, constants, and interfaces for + * the Perpherial Contoller Driver (PCD). + * + * The Peripheral Controller Driver (PCD) for Linux will implement the + * Gadget API, so that the existing Gadget drivers can be used. For + * the Mass Storage Function driver the File-backed USB Storage Gadget + * (FBS) driver will be used. The FBS driver supports the + * Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only + * transports. + * + */ + +/** Invalid DMA Address */ +#define DMA_ADDR_INVALID (~(dma_addr_t)0) +/** Maxpacket size for EP0 */ +#define MAX_EP0_SIZE 64 +/** Maxpacket size for any EP */ +#define MAX_PACKET_SIZE 1024 + +/** + * Get the pointer to the core_if from the pcd pointer. + */ +#define GET_CORE_IF( _pcd ) (_pcd->otg_dev->core_if) + +/** + * States of EP0. + */ +typedef enum ep0_state { + EP0_DISCONNECT = 0, /* no host */ + EP0_IDLE = 1, + EP0_IN_DATA_PHASE = 2, + EP0_OUT_DATA_PHASE = 3, + EP0_STATUS = 4, + EP0_STALL = 5, +} ep0state_e; + +/** Fordward declaration.*/ +struct dwc_otg_pcd; + +/** PCD EP structure. + * This structure describes an EP, there is an array of EPs in the PCD + * structure. + */ +typedef struct dwc_otg_pcd_ep { + /** USB EP data */ + struct usb_ep ep; + /** USB EP Descriptor */ + const struct usb_endpoint_descriptor *desc; + + /** queue of dwc_otg_pcd_requests. */ + struct list_head queue; + unsigned stopped : 1; + unsigned disabling : 1; + unsigned dma : 1; + unsigned queue_sof : 1; + + /** DWC_otg ep data. */ + dwc_ep_t dwc_ep; + + /** Pointer to PCD */ + struct dwc_otg_pcd *pcd; +}dwc_otg_pcd_ep_t; + + + +/** DWC_otg PCD Structure. + * This structure encapsulates the data for the dwc_otg PCD. + */ +typedef struct dwc_otg_pcd { + /** USB gadget */ + struct usb_gadget gadget; + /** USB gadget driver pointer*/ + struct usb_gadget_driver *driver; + /** The DWC otg device pointer. */ + struct dwc_otg_device *otg_dev; + + /** State of EP0 */ + ep0state_e ep0state; + /** EP0 Request is pending */ + unsigned ep0_pending : 1; + /** Indicates when SET CONFIGURATION Request is in process */ + unsigned request_config : 1; + /** The state of the Remote Wakeup Enable. */ + unsigned remote_wakeup_enable : 1; + /** The state of the B-Device HNP Enable. */ + unsigned b_hnp_enable : 1; + /** The state of A-Device HNP Support. */ + unsigned a_hnp_support : 1; + /** The state of the A-Device Alt HNP support. */ + unsigned a_alt_hnp_support : 1; + /** Count of pending Requests */ + unsigned request_pending; + + /** SETUP packet for EP0 + * This structure is allocated as a DMA buffer on PCD initialization + * with enough space for up to 3 setup packets. + */ + union { + struct usb_ctrlrequest req; + uint32_t d32[2]; + } *setup_pkt; + + dma_addr_t setup_pkt_dma_handle; + + /** 2-byte dma buffer used to return status from GET_STATUS */ + uint16_t *status_buf; + dma_addr_t status_buf_dma_handle; + + /** Array of EPs. */ + dwc_otg_pcd_ep_t ep0; + /** Array of IN EPs. */ + dwc_otg_pcd_ep_t in_ep[ MAX_EPS_CHANNELS - 1]; + /** Array of OUT EPs. */ + dwc_otg_pcd_ep_t out_ep[ MAX_EPS_CHANNELS - 1]; + /** number of valid EPs in the above array. */ +// unsigned num_eps : 4; + spinlock_t lock; + /** Timer for SRP. If it expires before SRP is successful + * clear the SRP. */ + struct timer_list srp_timer; + + /** Tasklet to defer starting of TEST mode transmissions until + * Status Phase has been completed. + */ + struct tasklet_struct test_mode_tasklet; + + /** Tasklet to delay starting of xfer in DMA mode */ + struct tasklet_struct *start_xfer_tasklet; + + /** The test mode to enter when the tasklet is executed. */ + unsigned test_mode; + +} dwc_otg_pcd_t; + + +/** DWC_otg request structure. + * This structure is a list of requests. + */ +typedef struct dwc_otg_pcd_request { + struct usb_request req; /**< USB Request. */ + struct list_head queue; /**< queue of these requests. */ + unsigned mapped:1; +} dwc_otg_pcd_request_t; + + +extern int __init dwc_otg_pcd_init(struct device *_dev); + +extern void dwc_otg_pcd_remove( struct device *_dev ); +extern int32_t dwc_otg_pcd_handle_intr( dwc_otg_pcd_t *_pcd ); +extern void dwc_otg_pcd_start_srp_timer(dwc_otg_pcd_t *_pcd ); + +extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t *_pcd); +extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t *_pcd, int set); + +#endif +#endif /* DWC_HOST_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_pcd_intr.c b/drivers/usb/gadget/dwc_otg/dwc_otg_pcd_intr.c new file mode 100644 index 00000000000..5d7b2b39239 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_pcd_intr.c @@ -0,0 +1,2519 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_pcd_intr.c $ + * $Revision: #18 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#ifndef CONFIG_DWC_HOST_ONLY +#include <linux/interrupt.h> +#include <linux/dma-mapping.h> + +#include "dwc_otg_driver.h" +#include "dwc_otg_pcd.h" + +//#define VERBOSE +#define DEBUG_EP0 + +/* request functions defined in "dwc_otg_pcd.c" */ +extern void request_done(dwc_otg_pcd_ep_t * _ep, dwc_otg_pcd_request_t * _req, + int _status); +extern void request_nuke(dwc_otg_pcd_ep_t * _ep); +extern void dwc_otg_pcd_update_otg(dwc_otg_pcd_t * _pcd, + const unsigned _reset); + +/** @file + * This file contains the implementation of the PCD Interrupt handlers. + * + * The PCD handles the device interrupts. Many conditions can cause a + * device interrupt. When an interrupt occurs, the device interrupt + * service routine determines the cause of the interrupt and + * dispatches handling to the appropriate function. These interrupt + * handling functions are described below. + * All interrupt registers are processed from LSB to MSB. + */ + +/** + * This function prints the ep0 state for debug purposes. + */ +static inline void print_ep0_state(dwc_otg_pcd_t * _pcd) +{ +#ifdef CONFIG_DWC_DEBUG + char str[40]; + switch (_pcd->ep0state) { + case EP0_DISCONNECT: + strcpy(str, "EP0_DISCONNECT"); + break; + case EP0_IDLE: + strcpy(str, "EP0_IDLE"); + break; + case EP0_IN_DATA_PHASE: + strcpy(str, "EP0_IN_DATA_PHASE"); + break; + case EP0_OUT_DATA_PHASE: + strcpy(str, "EP0_OUT_DATA_PHASE"); + break; + case EP0_STATUS: + strcpy(str, "EP0_STATUS"); + break; + case EP0_STALL: + strcpy(str, "EP0_STALL"); + break; + default: + strcpy(str, "EP0_INVALID"); + } + DWC_DEBUGPL(DBG_ANY, "%s(%d)\n", str, _pcd->ep0state); +#endif /* */ +} + +/** + * This function returns pointer to in ep struct with number ep_num + */ +static inline dwc_otg_pcd_ep_t *get_in_ep(dwc_otg_pcd_t * _pcd, + uint32_t ep_num) +{ + int i; + int num_in_eps = GET_CORE_IF(_pcd)->dev_if->num_in_eps; + if (ep_num == 0) { + return &_pcd->ep0; + } else { + for (i = 0; i < num_in_eps; ++i) { + if (_pcd->in_ep[i].dwc_ep.num == ep_num) + return &_pcd->in_ep[i]; + } + return 0; + } + +} + +/** + * This function returns pointer to out ep struct with number ep_num + */ +static inline dwc_otg_pcd_ep_t *get_out_ep(dwc_otg_pcd_t * _pcd, + uint32_t ep_num) +{ + int i; + int num_out_eps = GET_CORE_IF(_pcd)->dev_if->num_out_eps; + if (ep_num == 0) { + return &_pcd->ep0; + } else { + for (i = 0; i < num_out_eps; ++i) { + if (_pcd->out_ep[i].dwc_ep.num == ep_num) + return &_pcd->out_ep[i]; + } + return 0; + } + +} + +/** + * This functions gets a pointer to an EP from the wIndex address + * value of the control request. + */ +static dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * _pcd, u16 _wIndex) +{ + dwc_otg_pcd_ep_t * ep; + if ((_wIndex & USB_ENDPOINT_NUMBER_MASK) == 0) + return &_pcd->ep0; + list_for_each_entry(ep, &_pcd->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 & 0x0f) == (bEndpointAddress & 0x0f)) + return ep; + } + return NULL; +} + + +/** + * This function checks the EP request queue, if the queue is not + * empty the next request is started. + */ +void start_next_request(dwc_otg_pcd_ep_t * _ep) +{ + dwc_otg_pcd_request_t * req = 0; + if (!list_empty(&_ep->queue)) { + req = list_entry(_ep->queue.next, dwc_otg_pcd_request_t, queue); + + /* Setup and start the Transfer */ + _ep->dwc_ep.start_xfer_buff = req->req.buf; + _ep->dwc_ep.xfer_buff = req->req.buf; + _ep->dwc_ep.xfer_len = req->req.length; + _ep->dwc_ep.xfer_count = 0; + _ep->dwc_ep.dma_addr = req->req.dma; + _ep->dwc_ep.sent_zlp = 0; + _ep->dwc_ep.total_len = _ep->dwc_ep.xfer_len; + + //DWC_ERROR(" -> starting transfer (start_next_req) %s %s\n", + //_ep->ep.name, _ep->dwc_ep.is_in?"IN":"OUT"); +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * When a new transfer will be started, mark this + * endpoint as active. This way it will be blocked + * for further transfers, until the current transfer + * is finished. + */ + _ep->dwc_ep.active = 1; +#endif + dwc_otg_ep_start_transfer(GET_CORE_IF(_ep->pcd), &_ep->dwc_ep); + } +} + +/** + * This function handles the SOF Interrupts. At this time the SOF + * Interrupt is disabled. + */ +int32_t dwc_otg_pcd_handle_sof_intr(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + gintsts_data_t gintsts; + + //DWC_DEBUGPL(DBG_PCD, "SOF\n"); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.sofintr = 1; + dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This function handles the Rx Status Queue Level Interrupt, which + * indicates that there is a least one packet in the Rx FIFO. The + * packets are moved from the FIFO to memory, where they will be + * processed when the Endpoint Interrupt Register indicates Transfer + * Complete or SETUP Phase Done. + * + * Repeat the following until the Rx Status Queue is empty: + * -# Read the Receive Status Pop Register (GRXSTSP) to get Packet + * info + * -# If Receive FIFO is empty then skip to step Clear the interrupt + * and exit + * -# If SETUP Packet call dwc_otg_read_setup_packet to copy the + * SETUP data to the buffer + * -# If OUT Data Packet call dwc_otg_read_packet to copy the data + * to the destination buffer + */ +int32_t dwc_otg_pcd_handle_rx_status_q_level_intr(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_core_global_regs_t * global_regs = core_if->core_global_regs; + gintmsk_data_t gintmask = {.d32 = 0}; + device_grxsts_data_t status; + dwc_otg_pcd_ep_t * ep; +#ifndef CONFIG_OTG_PLB_DMA_TASKLET + gintsts_data_t gintsts; +#endif + +#ifdef CONFIG_DWC_DEBUG + static char *dpid_str[] = { "D0", "D2", "D1", "MDATA" }; + +#endif /* */ + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd); + + /* Disable the Rx Status Queue Level interrupt */ + gintmask.b.rxstsqlvl = 1; + dwc_modify_reg32(&global_regs->gintmsk, gintmask.d32, 0); + + /* Get the Status from the top of the FIFO */ + status.d32 = dwc_read_reg32(&global_regs->grxstsp); + DWC_DEBUGPL(DBG_PCD, "EP:%d BCnt:%d DPID:%s " + "pktsts:%x Frame:%d(0x%0x)\n", status.b.epnum, + status.b.bcnt, dpid_str[status.b.dpid], status.b.pktsts, + status.b.fn, status.b.fn); + + /* Get pointer to EP structure */ + ep = get_out_ep(_pcd, status.b.epnum); + +// ep = &_pcd->out_ep[ status.b.epnum - 1]; + switch (status.b.pktsts) { + case DWC_DSTS_GOUT_NAK: + DWC_DEBUGPL(DBG_PCDV, "Global OUT NAK\n"); + break; + case DWC_STS_DATA_UPDT: + DWC_DEBUGPL(DBG_PCDV, "OUT Data Packet\n"); + if (status.b.bcnt && ep->dwc_ep.xfer_buff) { +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + /* Enable the Rx Status Queue Level interrupt */ + dwc_modify_reg32(&global_regs->gintmsk, 0, gintmask.d32); +#endif + /** @todo NGS Check for buffer overflow? */ + dwc_otg_read_packet(core_if, ep->dwc_ep.xfer_buff, + status.b.bcnt); + ep->dwc_ep.xfer_count += status.b.bcnt; + ep->dwc_ep.xfer_buff += status.b.bcnt; + } + break; + case DWC_STS_XFER_COMP: + DWC_DEBUGPL(DBG_PCDV, "OUT Complete\n"); + break; + case DWC_DSTS_SETUP_COMP: +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "Setup Complete\n"); +#endif /* */ + break; + case DWC_DSTS_SETUP_UPDT: + dwc_otg_read_setup_packet(core_if, _pcd->setup_pkt->d32); +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, + "SETUP PKT: %02x.%02x v%04x i%04x l%04x\n", + _pcd->setup_pkt->req.bRequestType, + _pcd->setup_pkt->req.bRequest, + __le16_to_cpu(_pcd->setup_pkt->req.wValue), + __le16_to_cpu(_pcd->setup_pkt->req.wIndex), + __le16_to_cpu(_pcd->setup_pkt->req.wLength)); + +#endif /* */ + + ep->dwc_ep.xfer_count += status.b.bcnt; + break; + default: + DWC_DEBUGPL(DBG_PCDV, "Invalid Packet Status (0x%0x)\n", + status.b.pktsts); + break; + } +#ifdef CONFIG_OTG_PLB_DMA_TASKLET /* Can't access registers */ + if (!atomic_read(&release_later)) +#endif + /* Enable the Rx Status Queue Level interrupt */ + dwc_modify_reg32(&global_regs->gintmsk, 0, gintmask.d32); +#ifndef CONFIG_OTG_PLB_DMA_TASKLET /* why do this? */ + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.rxstsqlvl = 1; + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); +#endif + //DWC_DEBUGPL(DBG_PCDV, "EXIT: %s\n", __func__); + return 1; +} + +/** + * This function examines the Device IN Token Learning Queue to + * determine the EP number of the last IN token received. This + * implementation is for the Mass Storage device where there are only + * 2 IN EPs (Control-IN and BULK-IN). + * + * The EP numbers for the first six IN Tokens are in DTKNQR1 and there + * are 8 EP Numbers in each of the other possible DTKNQ Registers. + * + * @param _core_if Programming view of DWC_otg controller. + * + */ +static inline int get_ep_of_last_in_token(dwc_otg_core_if_t * _core_if) +{ + dwc_otg_device_global_regs_t * dev_global_regs = + _core_if->dev_if->dev_global_regs; + const uint32_t TOKEN_Q_DEPTH = _core_if->hwcfg2.b.dev_token_q_depth; + + /* Number of Token Queue Registers */ + const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8; + dtknq1_data_t dtknqr1; + uint32_t in_tkn_epnums[4]; + int ndx = 0; + int i = 0; + volatile uint32_t *addr = &dev_global_regs->dtknqr1; + int epnum = 0; + + //DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH); + + /* Read the DTKNQ Registers */ + for (i = 0; i <= DTKNQ_REG_CNT; i++) { + in_tkn_epnums[i] = dwc_read_reg32(addr); + DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1, + in_tkn_epnums[i]); + if (addr == &dev_global_regs->dvbusdis) { + addr = &dev_global_regs->dtknqr3_dthrctl; + } else { + ++addr; + } + } + + /* Copy the DTKNQR1 data to the bit field. */ + dtknqr1.d32 = in_tkn_epnums[0]; + + /* Get the EP numbers */ + in_tkn_epnums[0] = dtknqr1.b.epnums0_5; + ndx = dtknqr1.b.intknwptr - 1; + + //DWC_DEBUGPL(DBG_PCDV,"ndx=%d\n",ndx); + if (ndx == -1) { + /** @todo Find a simpler way to calculate the max + * queue position.*/ + int cnt = TOKEN_Q_DEPTH; + if (TOKEN_Q_DEPTH <= 6) { + cnt = TOKEN_Q_DEPTH - 1; + } else if (TOKEN_Q_DEPTH <= 14) { + cnt = TOKEN_Q_DEPTH - 7; + } else if (TOKEN_Q_DEPTH <= 22) { + cnt = TOKEN_Q_DEPTH - 15; + } else { + cnt = TOKEN_Q_DEPTH - 23; + } + epnum = (in_tkn_epnums[DTKNQ_REG_CNT - 1] >> (cnt * 4)) & 0xF; + } else { + if (ndx <= 5) { + epnum = (in_tkn_epnums[0] >> (ndx * 4)) & 0xF; + } else if (ndx <= 13) { + ndx -= 6; + epnum = (in_tkn_epnums[1] >> (ndx * 4)) & 0xF; + } else if (ndx <= 21) { + ndx -= 14; + epnum = (in_tkn_epnums[2] >> (ndx * 4)) & 0xF; + } else if (ndx <= 29) { + ndx -= 22; + epnum = (in_tkn_epnums[3] >> (ndx * 4)) & 0xF; + } + } + //DWC_DEBUGPL(DBG_PCD,"epnum=%d\n",epnum); + return epnum; +} + +/** + * This interrupt occurs when the non-periodic Tx FIFO is half-empty. + * The active request is checked for the next packet to be loaded into + * the non-periodic Tx FIFO. + */ +int32_t dwc_otg_pcd_handle_np_tx_fifo_empty_intr(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_core_global_regs_t * global_regs = core_if->core_global_regs; + dwc_otg_dev_in_ep_regs_t * ep_regs; + volatile gnptxsts_data_t txstatus = {.d32 = 0 }; +#ifndef CONFIG_OTG_PLB_DMA + gintsts_data_t gintsts; +#endif + int epnum = 0; + dwc_otg_pcd_ep_t * ep = 0; + uint32_t len = 0; + int dwords; + + /* Get the epnum from the IN Token Learning Queue. */ + epnum = get_ep_of_last_in_token(core_if); + ep = get_in_ep(_pcd, epnum); + +/* + if(epnum != 0) + ep = &_pcd->in_ep[epnum-1]; + else + ep = &_pcd->ep0; +*/ + DWC_DEBUGPL(DBG_PCD, "NP TxFifo Empty: %s(%d) \n", ep->ep.name,epnum); + ep_regs = core_if->dev_if->in_ep_regs[epnum]; + len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count; + if (len > ep->dwc_ep.maxpacket) { + len = ep->dwc_ep.maxpacket; + } + dwords = (len + 3) / 4; + + /* While there is space in the queue and space in the FIFO and + * More data to tranfer, Write packets to the Tx FIFO + */ + txstatus.d32 = dwc_read_reg32(&global_regs->gnptxsts); + DWC_DEBUGPL(DBG_PCDV, "b4 GNPTXSTS=0x%08x\n", txstatus.d32); + while (txstatus.b.nptxqspcavail > 0 + && txstatus.b.nptxfspcavail > dwords + && ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len) { + + /* Write the FIFO */ +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * When a new transfer will be started, mark this + * endpoint as active. This way it will be blocked + * for further transfers, until the current transfer + * is finished. + */ + ep->dwc_ep.active = 1; +#endif + dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0); + len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count; + if (len > ep->dwc_ep.maxpacket) { + len = ep->dwc_ep.maxpacket; + } +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + if (atomic_read(&release_later)) { + break; + } +#endif + dwords = (len + 3) / 4; + txstatus.d32 = dwc_read_reg32(&global_regs->gnptxsts); + DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n", txstatus.d32); + } + DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n", + dwc_read_reg32(&global_regs->gnptxsts)); +#ifndef CONFIG_OTG_PLB_DMA /* why do this? */ + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.nptxfempty = 1; + dwc_write_reg32(&global_regs->gintsts, gintsts.d32); + + /* + * Re-enable tx-fifo empty interrupt, if packets are still + * pending + */ + if (len) + dwc_modify_reg32(&global_regs->gintmsk, 0, gintsts.d32); +#endif + + return 1; +} + +/** + * This function is called when dedicated Tx FIFO Empty interrupt occurs. + * The active request is checked for the next packet to be loaded into + * apropriate Tx FIFO. + */ +static int32_t write_empty_tx_fifo(dwc_otg_pcd_t * _pcd, uint32_t epnum) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + dwc_otg_dev_in_ep_regs_t * ep_regs; + dtxfsts_data_t txstatus = {.d32 = 0}; + dwc_otg_pcd_ep_t * ep = 0; + uint32_t len = 0; + int dwords; + ep = get_in_ep(_pcd, epnum); + +/* + if(epnum != 0) + ep = &_pcd->in_ep[epnum-1]; + else + ep = &_pcd->ep0; +*/ + DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %s(%d) \n",ep->ep.name, epnum); + ep_regs = core_if->dev_if->in_ep_regs[epnum]; + len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count; + if (len > ep->dwc_ep.maxpacket) { + len = ep->dwc_ep.maxpacket; + } + dwords = (len + 3) / 4; + + /* While there is space in the queue and space in the FIFO and + * More data to tranfer, Write packets to the Tx FIFO */ + txstatus.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dtxfsts); + DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32); + while (txstatus.b.txfspcavail > dwords + && ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len + && ep->dwc_ep.xfer_len != 0) { + + /* Write the FIFO */ + dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0); + len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count; + if (len > ep->dwc_ep.maxpacket) { + len = ep->dwc_ep.maxpacket; + } + dwords = (len + 3) / 4; + txstatus.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dtxfsts); + DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum, + txstatus.d32); + } + DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, + dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dtxfsts)); + return 1; +} + +/** + * This function is called when the Device is disconnected. It stops + * any active requests and informs the Gadget driver of the + * disconnect. + */ +void dwc_otg_pcd_stop(dwc_otg_pcd_t * _pcd) +{ + int i, num_in_eps, num_out_eps; + dwc_otg_pcd_ep_t * ep; + gintmsk_data_t intr_mask = {.d32 = 0}; + num_in_eps = GET_CORE_IF(_pcd)->dev_if->num_in_eps; + num_out_eps = GET_CORE_IF(_pcd)->dev_if->num_out_eps; + DWC_DEBUGPL(DBG_PCDV, "%s() \n", __func__); + + /* don't disconnect drivers more than once */ + if (_pcd->ep0state == EP0_DISCONNECT) { + DWC_DEBUGPL(DBG_ANY, "%s() Already Disconnected\n", __func__); + return; + } + _pcd->ep0state = EP0_DISCONNECT; + + /* Reset the OTG state. */ + dwc_otg_pcd_update_otg(_pcd, 1); + + /* Disable the NP Tx Fifo Empty Interrupt. */ + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Flush the FIFOs */ + /**@todo NGS Flush Periodic FIFOs */ + dwc_otg_flush_tx_fifo(GET_CORE_IF(_pcd), 0); + dwc_otg_flush_rx_fifo(GET_CORE_IF(_pcd)); + + /* prevent new request submissions, kill any outstanding requests */ + ep = &_pcd->ep0; + request_nuke(ep); + + /* prevent new request submissions, kill any outstanding requests */ + for (i = 0; i < num_in_eps; i++) { + dwc_otg_pcd_ep_t * ep = &_pcd->in_ep[i]; + request_nuke(ep); + } + + /* prevent new request submissions, kill any outstanding requests */ + for (i = 0; i < num_out_eps; i++) { + dwc_otg_pcd_ep_t * ep = &_pcd->out_ep[i]; + request_nuke(ep); + } + + /* report disconnect; the driver is already quiesced */ + if (_pcd->driver && _pcd->driver->disconnect) { + SPIN_UNLOCK(&_pcd->lock); + _pcd->driver->disconnect(&_pcd->gadget); + SPIN_LOCK(&_pcd->lock); + } +} + +/** + * This interrupt indicates that ... + */ +int32_t dwc_otg_pcd_handle_i2c_intr(dwc_otg_pcd_t * _pcd) +{ + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "i2cintr"); + intr_mask.b.i2cintr = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.i2cintr = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that ... + */ +int32_t dwc_otg_pcd_handle_early_suspend_intr(dwc_otg_pcd_t * _pcd) +{ + gintsts_data_t gintsts; + +#if defined(VERBOSE) + DWC_PRINT("Early Suspend Detected\n"); +#endif /* */ + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.erlysuspend = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * This function configures EPO to receive SETUP packets. + * + * @todo NGS: Update the comments from the HW FS. + * + * -# Program the following fields in the endpoint specific registers + * for Control OUT EP 0, in order to receive a setup packet + * - DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back + * setup packets) + * - DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back + * to back setup packets) + * - In DMA mode, DOEPDMA0 Register with a memory address to + * store any setup packets received + * + * @param _core_if Programming view of DWC_otg controller. + * @param _pcd Programming view of the PCD. + */ +static inline void ep0_out_start(dwc_otg_core_if_t * _core_if, + dwc_otg_pcd_t * _pcd) +{ + dwc_otg_dev_if_t * dev_if = _core_if->dev_if; + deptsiz0_data_t doeptsize0 = {.d32 = 0}; + +#ifdef VERBOSE + DWC_DEBUGPL(DBG_PCDV, "%s() doepctl0=%0x\n", __func__, + dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl)); + +#endif /* */ + doeptsize0.b.supcnt = 3; + doeptsize0.b.pktcnt = 1; + doeptsize0.b.xfersize = 8 * 3; + dwc_write_reg32(&dev_if->out_ep_regs[0]->doeptsiz, doeptsize0.d32); + if (_core_if->dma_enable) { + depctl_data_t doepctl = {.d32 = 0}; + + /** @todo dma needs to handle multiple setup packets (up to 3) */ + dwc_write_reg32(&dev_if->out_ep_regs[0]->doepdma, + _pcd->setup_pkt_dma_handle); + + // EP enable + doepctl.d32 = + dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl); + doepctl.b.epena = 1; + doepctl.d32 = 0x80008000; + dwc_write_reg32(&dev_if->out_ep_regs[0]->doepctl, + doepctl.d32); + } + +#ifdef VERBOSE + DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n", + dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl)); + DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n", + dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl)); +#endif /* */ +} + +/** + * This interrupt occurs when a USB Reset is detected. When the USB + * Reset Interrupt occurs the device state is set to DEFAULT and the + * EP0 state is set to IDLE. + * -# Set the NAK bit for all OUT endpoints (DOEPCTLn.SNAK = 1) + * -# Unmask the following interrupt bits + * - DAINTMSK.INEP0 = 1 (Control 0 IN endpoint) + * - DAINTMSK.OUTEP0 = 1 (Control 0 OUT endpoint) + * - DOEPMSK.SETUP = 1 + * - DOEPMSK.XferCompl = 1 + * - DIEPMSK.XferCompl = 1 + * - DIEPMSK.TimeOut = 1 + * -# Program the following fields in the endpoint specific registers + * for Control OUT EP 0, in order to receive a setup packet + * - DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back + * setup packets) + * - DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back + * to back setup packets) + * - In DMA mode, DOEPDMA0 Register with a memory address to + * store any setup packets received + * At this point, all the required initialization, except for enabling + * the control 0 OUT endpoint is done, for receiving SETUP packets. + */ +int32_t dwc_otg_pcd_handle_usb_reset_intr(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + depctl_data_t doepctl = {.d32 = 0}; + daint_data_t daintmsk = {.d32 = 0}; + doepmsk_data_t doepmsk = {.d32 = 0}; + diepmsk_data_t diepmsk = {.d32 = 0}; + dcfg_data_t dcfg = {.d32 = 0}; + grstctl_t resetctl = {.d32 = 0}; + dctl_data_t dctl = {.d32 = 0}; + int i = 0; + volatile gintsts_data_t gintsts = {.d32 = 0 }; + DWC_PRINT("USB RESET\n"); + + /* reset the HNP settings */ + dwc_otg_pcd_update_otg(_pcd, 1); + + /* Clear the Remote Wakeup Signalling */ + dctl.b.rmtwkupsig = 1; + dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32,0); + + /* Set NAK for all OUT EPs */ + doepctl.b.snak = 1; + for (i = 0; i <= dev_if->num_out_eps; i++) { + dwc_write_reg32(&dev_if->out_ep_regs[i]->doepctl, + doepctl.d32); + } + + /* Flush the NP Tx FIFO */ + dwc_otg_flush_tx_fifo(core_if, 0); + + /* Flush the Learning Queue */ + resetctl.b.intknqflsh = 1; + dwc_write_reg32(&core_if->core_global_regs->grstctl, resetctl.d32); + daintmsk.b.inep0 = 1; + daintmsk.b.outep0 = 1; + dwc_write_reg32(&dev_if->dev_global_regs->daintmsk, daintmsk.d32); + doepmsk.b.setup = 1; + doepmsk.b.xfercompl = 1; + doepmsk.b.ahberr = 1; + doepmsk.b.epdisabled = 1; + dwc_write_reg32(&dev_if->dev_global_regs->doepmsk, doepmsk.d32); + diepmsk.b.xfercompl = 1; + diepmsk.b.timeout = 1; + diepmsk.b.epdisabled = 1; + diepmsk.b.ahberr = 1; + diepmsk.b.intknepmis = 1; + dwc_write_reg32(&dev_if->dev_global_regs->diepmsk, diepmsk.d32); + + /* Reset Device Address */ + dcfg.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dcfg); + dcfg.b.devaddr = 0; + dwc_write_reg32(&dev_if->dev_global_regs->dcfg, dcfg.d32); + + /* setup EP0 to receive SETUP packets */ + ep0_out_start(core_if, _pcd); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.usbreset = 1; + dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * Get the device speed from the device status register and convert it + * to USB speed constant. + * + * @param _core_if Programming view of DWC_otg controller. + */ +static int get_device_speed(dwc_otg_core_if_t * _core_if) +{ + dsts_data_t dsts; + enum usb_device_speed speed = USB_SPEED_UNKNOWN; + dsts.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts); + switch (dsts.b.enumspd) { + case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ: + speed = USB_SPEED_HIGH; + break; + case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ: + case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ: + speed = USB_SPEED_FULL; + break; + case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ: + speed = USB_SPEED_LOW; + break; + } + return speed; +} + +/** + * Read the device status register and set the device speed in the + * data structure. + * Set up EP0 to receive SETUP packets by calling dwc_ep0_activate. + */ +int32_t dwc_otg_pcd_handle_enum_done_intr(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_pcd_ep_t * ep0 = &_pcd->ep0; + gintsts_data_t gintsts; + gusbcfg_data_t gusbcfg; + dwc_otg_core_global_regs_t * global_regs = + GET_CORE_IF(_pcd)->core_global_regs; + uint32_t gsnpsid = global_regs->gsnpsid; + uint8_t utmi16b, utmi8b; + DWC_DEBUGPL(DBG_PCD, "SPEED ENUM\n"); + if (gsnpsid >= (uint32_t) 0x4f54260a) { + utmi16b = 5; + utmi8b = 9; + } else { + utmi16b = 4; + utmi8b = 8; + } + dwc_otg_ep0_activate(GET_CORE_IF(_pcd), &ep0->dwc_ep); + +#ifdef DEBUG_EP0 + print_ep0_state(_pcd); +#endif /* */ + _pcd->ep0state = EP0_IDLE; + ep0->stopped = 0; + _pcd->gadget.speed = get_device_speed(GET_CORE_IF(_pcd)); + + /* Set USB turnaround time based on device speed and PHY interface. */ + gusbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg); + if (_pcd->gadget.speed == USB_SPEED_HIGH) { + if (GET_CORE_IF(_pcd)->hwcfg2.b.hs_phy_type == + DWC_HWCFG2_HS_PHY_TYPE_ULPI) { + + /* ULPI interface */ + gusbcfg.b.usbtrdtim = 9; + } + if (GET_CORE_IF(_pcd)->hwcfg2.b.hs_phy_type == + DWC_HWCFG2_HS_PHY_TYPE_UTMI) { + +///// + /* UTMI+ interface */ + if (GET_CORE_IF(_pcd)->hwcfg4.b. + utmi_phy_data_width == 0) { + gusbcfg.b.usbtrdtim = utmi8b; + } else if (GET_CORE_IF(_pcd)->hwcfg4.b. + utmi_phy_data_width == 1) { + gusbcfg.b.usbtrdtim = utmi16b; + } else if (GET_CORE_IF(_pcd)->core_params-> + phy_utmi_width == 8) { + gusbcfg.b.usbtrdtim = utmi8b; + } else { + gusbcfg.b.usbtrdtim = utmi16b; + } + } + if (GET_CORE_IF(_pcd)->hwcfg2.b.hs_phy_type == + DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI) { + /* UTMI+ OR ULPI interface */ + if (gusbcfg.b.ulpi_utmi_sel == 1) { + /* ULPI interface */ + gusbcfg.b.usbtrdtim = 9; + } else { + /* UTMI+ interface */ + if (GET_CORE_IF(_pcd)->core_params-> + phy_utmi_width == 16) { + gusbcfg.b.usbtrdtim = utmi16b; + } else { + gusbcfg.b.usbtrdtim = utmi8b; + } + } + } + } else { + /* Full or low speed */ + gusbcfg.b.usbtrdtim = 9; + } + dwc_write_reg32(&global_regs->gusbcfg, gusbcfg.d32); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.enumdone = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that the ISO OUT Packet was dropped due to + * Rx FIFO full or Rx Status Queue Full. If this interrupt occurs + * read all the data from the Rx FIFO. + */ +int32_t dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(dwc_otg_pcd_t * + _pcd) +{ + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + DWC_PRINT("INTERRUPT Handler not implemented for %s\n", + "ISOC Out Dropped"); + intr_mask.b.isooutdrop = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.isooutdrop = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * This interrupt indicates the end of the portion of the micro-frame + * for periodic transactions. If there is a periodic transaction for + * the next frame, load the packets into the EP periodic Tx FIFO. + */ +int32_t dwc_otg_pcd_handle_end_periodic_frame_intr(dwc_otg_pcd_t * _pcd) +{ + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + DWC_PRINT("INTERRUPT Handler not implemented for %s\n", + "End of Periodic Portion of Micro-Frame Interrupt"); + intr_mask.b.eopframe = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.eopframe = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * This interrupt indicates that EP of the packet on the top of the + * non-periodic Tx FIFO does not match EP of the IN Token received. + * + * The "Device IN Token Queue" Registers are read to determine the + * order the IN Tokens have been received. The non-periodic Tx FIFO + * is flushed, so it can be reloaded in the order seen in the IN Token + * Queue. + */ +int32_t dwc_otg_pcd_handle_ep_mismatch_intr(dwc_otg_core_if_t * _core_if) +{ + gintsts_data_t gintsts; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _core_if); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.epmismatch = 1; + dwc_write_reg32(&_core_if->core_global_regs->gintsts, gintsts.d32); + return 1; +} + +/** + * This funcion stalls EP0. + */ +static inline void ep0_do_stall(dwc_otg_pcd_t * _pcd, const int err_val) +{ + dwc_otg_pcd_ep_t * ep0 = &_pcd->ep0; + struct usb_ctrlrequest *ctrl = &_pcd->setup_pkt->req; + DWC_WARN("req %02x.%02x protocol STALL; err %d\n", ctrl->bRequestType, + ctrl->bRequest, err_val); + ep0->dwc_ep.is_in = 1; + dwc_otg_ep_set_stall(_pcd->otg_dev->core_if, &ep0->dwc_ep); + _pcd->ep0.stopped = 1; + _pcd->ep0state = EP0_IDLE; + ep0_out_start(GET_CORE_IF(_pcd), _pcd); +} + +/** + * This functions delegates the setup command to the gadget driver. + */ +static inline void do_gadget_setup(dwc_otg_pcd_t * _pcd, + struct usb_ctrlrequest *_ctrl) +{ + int ret = 0; + if (_pcd->driver && _pcd->driver->setup) { + SPIN_UNLOCK(&_pcd->lock); + ret = _pcd->driver->setup(&_pcd->gadget, _ctrl); + SPIN_LOCK(&_pcd->lock); + if (ret < 0) { + ep0_do_stall(_pcd, ret); + } + + /** @todo This is a g_file_storage gadget driver specific + * workaround: a DELAYED_STATUS result from the fsg_setup + * routine will result in the gadget queueing a EP0 IN status + * phase for a two-stage control transfer. Exactly the same as + * a SET_CONFIGURATION/SET_INTERFACE except that this is a class + * specific request. Need a generic way to know when the gadget + * driver will queue the status phase. Can we assume when we + * call the gadget driver setup() function that it will always + * queue and require the following flag? Need to look into + * this. + */ + if (ret == 256 + 999) { + _pcd->request_config = 1; + } + } +} + +/** + * This function starts the Zero-Length Packet for the IN status phase + * of a 2 stage control transfer. + */ +static inline void do_setup_in_status_phase(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_pcd_ep_t * ep0 = &_pcd->ep0; + if (_pcd->ep0state == EP0_STALL) { + return; + } + _pcd->ep0state = EP0_STATUS; + + /* Prepare for more SETUP Packets */ + DWC_DEBUGPL(DBG_PCD, "EP0 IN ZLP\n"); + ep0->dwc_ep.xfer_len = 0; + ep0->dwc_ep.xfer_count = 0; + ep0->dwc_ep.is_in = 1; + ep0->dwc_ep.dma_addr = _pcd->setup_pkt_dma_handle; + dwc_otg_ep0_start_transfer(GET_CORE_IF(_pcd), &ep0->dwc_ep); + + /* Prepare for more SETUP Packets */ + ep0_out_start(GET_CORE_IF(_pcd), _pcd); +} + +/** + * This function starts the Zero-Length Packet for the OUT status phase + * of a 2 stage control transfer. + */ +static inline void do_setup_out_status_phase(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_pcd_ep_t * ep0 = &_pcd->ep0; + if (_pcd->ep0state == EP0_STALL) { + DWC_DEBUGPL(DBG_PCD, "EP0 STALLED\n"); + return; + } + _pcd->ep0state = EP0_STATUS; + + /* Prepare for more SETUP Packets */ + //ep0_out_start( GET_CORE_IF(_pcd), _pcd ); + DWC_DEBUGPL(DBG_PCD, "EP0 OUT ZLP\n"); + ep0->dwc_ep.xfer_len = 0; + ep0->dwc_ep.xfer_count = 0; + ep0->dwc_ep.is_in = 0; + + //ep0->dwc_ep.dma_addr = 0xffffffff; + ep0->dwc_ep.dma_addr = _pcd->setup_pkt_dma_handle; + dwc_otg_ep0_start_transfer(GET_CORE_IF(_pcd), &ep0->dwc_ep); + + /* Prepare for more SETUP Packets */ + ep0_out_start(GET_CORE_IF(_pcd), _pcd); +} + +/** + * Clear the EP halt (STALL) and if pending requests start the + * transfer. + */ +static inline void pcd_clear_halt(dwc_otg_pcd_t * _pcd, + dwc_otg_pcd_ep_t * _ep) +{ + if (_ep->dwc_ep.stall_clear_flag == 0) + dwc_otg_ep_clear_stall(GET_CORE_IF(_pcd), &_ep->dwc_ep); + + /* Reactive the EP */ + dwc_otg_ep_activate(GET_CORE_IF(_pcd), &_ep->dwc_ep); + if (_ep->stopped) { + _ep->stopped = 0; + + /* If there is a request in the EP queue start it */ + + /** @todo FIXME: this causes an EP mismatch in DMA mode. + * epmismatch not yet implemented. */ + + /* + * Above fixme is solved by implmenting a tasklet to call the + * start_next_request(), outside of interrupt context at some + * time after the current time, after a clear-halt setup packet. + * Still need to implement ep mismatch in the future if a gadget + * ever uses more than one endpoint at once + */ + if (GET_CORE_IF(_pcd)->dma_enable) { + _ep->queue_sof = 1; + tasklet_schedule(_pcd->start_xfer_tasklet); + } else { +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * To re-enable this endpoint it's important to + * set this next_ep number. Otherwise the endpoint + * will not get active again after stalling. + */ +//test-only _ep->pcd->next_ep = _ep->dwc_ep.num; + start_next_request( _ep ); +#endif +#if 0 + _ep->queue_sof = 1; + DWC_ERROR("tasklet schedule\n"); + tasklet_schedule(_pcd->start_xfer_tasklet); + if (GET_CORE_IF(_pcd)->core_params->opt) + { + start_next_request(_ep); + } + +#endif /* */ + } + } + + /* Start Control Status Phase */ + do_setup_in_status_phase(_pcd); +} + +/** + * This function is called when the SET_FEATURE TEST_MODE Setup packet + * is sent from the host. The Device Control register is written with + * the Test Mode bits set to the specified Test Mode. This is done as + * a tasklet so that the "Status" phase of the control transfer + * completes before transmitting the TEST packets. + * + * @todo This has not been tested since the tasklet struct was put + * into the PCD struct! + * + */ +static void do_test_mode(unsigned long _data) +{ + dctl_data_t dctl; + dwc_otg_pcd_t * pcd = (dwc_otg_pcd_t *) _data; + dwc_otg_core_if_t * core_if = GET_CORE_IF(pcd); + int test_mode = pcd->test_mode; + +// DWC_WARN("%s() has not been tested since being rewritten!\n", __func__); + dctl.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dctl); + switch (test_mode) { + case 1: // TEST_J + dctl.b.tstctl = 1; + break; + case 2: // TEST_K + dctl.b.tstctl = 2; + break; + case 3: // TEST_SE0_NAK + dctl.b.tstctl = 3; + break; + case 4: // TEST_PACKET + dctl.b.tstctl = 4; + break; + case 5: // TEST_FORCE_ENABLE + dctl.b.tstctl = 5; + break; + } + dwc_write_reg32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32); +} + +/** + * This function process the SET_FEATURE Setup Commands. + */ +static inline void do_set_feature(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_core_global_regs_t * global_regs = core_if->core_global_regs; + struct usb_ctrlrequest ctrl = _pcd->setup_pkt->req; + dwc_otg_pcd_ep_t * ep = 0; + int32_t otg_cap_param = core_if->core_params->otg_cap; + gotgctl_data_t gotgctl = {.d32 = 0}; + DWC_DEBUGPL(DBG_PCD, "SET_FEATURE:%02x.%02x v%04x i%04x l%04x\n", + ctrl.bRequestType, ctrl.bRequest, + __le16_to_cpu(ctrl.wValue), __le16_to_cpu(ctrl.wIndex), + __le16_to_cpu(ctrl.wLength)); + + DWC_DEBUGPL(DBG_PCD, "otg_cap=%d\n", otg_cap_param); + switch (ctrl.bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + switch (__le16_to_cpu(ctrl.wValue)) { + case USB_DEVICE_REMOTE_WAKEUP: + _pcd->remote_wakeup_enable = 1; + break; + case USB_DEVICE_TEST_MODE: + + /* Setup the Test Mode tasklet to do the Test + * Packet generation after the SETUP Status + * phase has completed. */ + + /** @todo This has not been tested since the + * tasklet struct was put into the PCD + * struct! */ + _pcd->test_mode_tasklet.next = 0; + _pcd->test_mode_tasklet.state = 0; + atomic_set(&_pcd->test_mode_tasklet.count, 0); + _pcd->test_mode_tasklet.func = do_test_mode; + _pcd->test_mode_tasklet.data = (unsigned long)_pcd; + _pcd->test_mode = __le16_to_cpu(ctrl.wIndex) >> 8; + tasklet_schedule(&_pcd->test_mode_tasklet); + break; + case USB_DEVICE_B_HNP_ENABLE: + DWC_DEBUGPL(DBG_PCDV, + "SET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n"); + + /* dev may initiate HNP */ + if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) { + _pcd->b_hnp_enable = 1; + dwc_otg_pcd_update_otg(_pcd, 0); + DWC_DEBUGPL(DBG_PCD, "Request B HNP\n"); + + /**@todo Is the gotgctl.devhnpen cleared + * by a USB Reset? */ + gotgctl.b.devhnpen = 1; + gotgctl.b.hnpreq = 1; + dwc_write_reg32(&global_regs->gotgctl,gotgctl.d32); + } else { + ep0_do_stall(_pcd, -EOPNOTSUPP); + } + break; + case USB_DEVICE_A_HNP_SUPPORT: + /* RH port supports HNP */ + DWC_DEBUGPL(DBG_PCDV, + "SET_FEATURE: USB_DEVICE_A_HNP_SUPPORT\n"); + if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) { + _pcd->a_hnp_support = 1; + dwc_otg_pcd_update_otg(_pcd, 0); + } else { + ep0_do_stall(_pcd, -EOPNOTSUPP); + } + break; + case USB_DEVICE_A_ALT_HNP_SUPPORT: + /* other RH port does */ + DWC_DEBUGPL(DBG_PCDV, + "SET_FEATURE: USB_DEVICE_A_ALT_HNP_SUPPORT\n"); + if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) { + _pcd->a_alt_hnp_support = 1; + dwc_otg_pcd_update_otg(_pcd, 0); + } else { + ep0_do_stall(_pcd, -EOPNOTSUPP); + } + break; + } + do_setup_in_status_phase(_pcd); + break; + case USB_RECIP_INTERFACE: + do_gadget_setup(_pcd, &ctrl); + break; + case USB_RECIP_ENDPOINT: + if (__le16_to_cpu(ctrl.wValue) == USB_ENDPOINT_HALT) { + ep = get_ep_by_addr(_pcd, __le16_to_cpu(ctrl.wIndex)); + if (ep == 0) { + ep0_do_stall(_pcd, -EOPNOTSUPP); + return; + } + ep->stopped = 1; + dwc_otg_ep_set_stall(core_if, &ep->dwc_ep); + } + do_setup_in_status_phase(_pcd); + break; + } +} + +/** + * This function process the CLEAR_FEATURE Setup Commands. + */ +static inline void do_clear_feature(dwc_otg_pcd_t * _pcd) +{ + struct usb_ctrlrequest ctrl = _pcd->setup_pkt->req; + dwc_otg_pcd_ep_t * ep = 0; + DWC_DEBUGPL(DBG_PCD, "CLEAR_FEATURE:%02x.%02x v%04x i%04x l%04x\n", + ctrl.bRequestType, ctrl.bRequest, + __le16_to_cpu(ctrl.wValue), __le16_to_cpu(ctrl.wIndex), + __le16_to_cpu(ctrl.wLength)); + + switch (ctrl.bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + switch (__le16_to_cpu(ctrl.wValue)) { + case USB_DEVICE_REMOTE_WAKEUP: + _pcd->remote_wakeup_enable = 0; + break; + case USB_DEVICE_TEST_MODE: + /** @todo Add CLEAR_FEATURE for TEST modes. */ + break; + } + do_setup_in_status_phase(_pcd); + break; + case USB_RECIP_ENDPOINT: + ep = get_ep_by_addr(_pcd,__le16_to_cpu(ctrl.wIndex)); + if (ep == 0) { + ep0_do_stall(_pcd, -EOPNOTSUPP); + return; + } + pcd_clear_halt(_pcd, ep); + DWC_DEBUGPL(DBG_PCD, "%s halt cleared by host\n", + ep->ep.name); + break; + } +} + +/** + * This function processes SETUP commands. In Linux, the USB Command + * processing is done in two places - the first being the PCD and the + * second in the Gadget Driver (for example, the File-Backed Storage + * Gadget Driver). + * + * <table> + * <tr><td>Command </td><td>Driver </td><td>Description</td></tr> + * + * <tr><td>GET_STATUS </td><td>PCD </td><td>Command is processed as + * defined in chapter 9 of the USB 2.0 Specification chapter 9 + * </td></tr> + * + * <tr><td>CLEAR_FEATURE </td><td>PCD </td><td>The Device and Endpoint + * requests are the ENDPOINT_HALT feature is procesed, all others the + * interface requests are ignored.</td></tr> + * + * <tr><td>SET_FEATURE </td><td>PCD </td><td>The Device and Endpoint + * requests are processed by the PCD. Interface requests are passed + * to the Gadget Driver.</td></tr> + * + * <tr><td>SET_ADDRESS </td><td>PCD </td><td>Program the DCFG reg, + * with device address received </td></tr> + * + * <tr><td>GET_DESCRIPTOR </td><td>Gadget Driver </td><td>Return the + * requested descriptor</td></tr> + * + * <tr><td>SET_DESCRIPTOR </td><td>Gadget Driver </td><td>Optional - + * not implemented by any of the existing Gadget Drivers.</td></tr> + * + * <tr><td>SET_CONFIGURATION </td><td>Gadget Driver </td><td>Disable + * all EPs and enable EPs for new configuration.</td></tr> + * + * <tr><td>GET_CONFIGURATION </td><td>Gadget Driver </td><td>Return + * the current configuration</td></tr> + * + * <tr><td>SET_INTERFACE </td><td>Gadget Driver </td><td>Disable all + * EPs and enable EPs for new configuration.</td></tr> + * + * <tr><td>GET_INTERFACE </td><td>Gadget Driver </td><td>Return the + * current interface.</td></tr> + * + * <tr><td>SYNC_FRAME </td><td>PCD </td><td>Display debug + * message.</td></tr> + * </table> + * + * When the SETUP Phase Done interrupt occurs, the PCD SETUP commands are + * processed by pcd_setup. Calling the Function Driver's setup function from + * pcd_setup processes the gadget SETUP commands. + */ +static inline void pcd_setup(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + struct usb_ctrlrequest ctrl = _pcd->setup_pkt->req; + dwc_otg_pcd_ep_t * ep; + dwc_otg_pcd_ep_t * ep0 = &_pcd->ep0; + uint16_t * status = _pcd->status_buf; + deptsiz0_data_t doeptsize0 = {.d32 = 0}; + +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, "SETUP %02x.%02x v%04x i%04x l%04x\n", + ctrl.bRequestType, ctrl.bRequest, __le16_to_cpu(ctrl.wValue), + __le16_to_cpu(ctrl.wIndex), __le16_to_cpu(ctrl.wLength)); + +#endif /* */ + doeptsize0.d32 = dwc_read_reg32(&dev_if->out_ep_regs[0]->doeptsiz); + + /** @todo handle > 1 setup packet , assert error for now */ + if (core_if->dma_enable && (doeptsize0.b.supcnt < 2)) { + DWC_ERROR("\n\n CANNOT handle > 1 setup packet in DMA mode\n\n"); + } + + /* Clean up the request queue */ + request_nuke(ep0); + ep0->stopped = 0; + if (ctrl.bRequestType & USB_DIR_IN) { + ep0->dwc_ep.is_in = 1; + _pcd->ep0state = EP0_IN_DATA_PHASE; + } else { + ep0->dwc_ep.is_in = 0; + _pcd->ep0state = EP0_OUT_DATA_PHASE; + } + if ((ctrl.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD) { + /* handle non-standard (class/vendor) requests in the gadget driver */ + do_gadget_setup(_pcd, &ctrl); + return; + } + + /** @todo NGS: Handle bad setup packet? */ + switch (ctrl.bRequest) { + case USB_REQ_GET_STATUS: +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, + "GET_STATUS %02x.%02x v%04x i%04x l%04x\n", + ctrl.bRequestType, ctrl.bRequest, __le16_to_cpu( ctrl.wValue), + __le16_to_cpu(ctrl.wIndex), __le16_to_cpu(ctrl.wLength)); + +#endif /* */ + switch (ctrl.bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + *status = 0x1; /* Self powered */ + *status |= _pcd->remote_wakeup_enable << 1; + break; + case USB_RECIP_INTERFACE: + *status = 0; + break; + case USB_RECIP_ENDPOINT: + ep = get_ep_by_addr(_pcd, __le16_to_cpu(ctrl.wIndex)); + if (ep == 0 || __le16_to_cpu(ctrl.wLength) > 2) { + ep0_do_stall(_pcd, -EOPNOTSUPP); + return; + } + /** @todo check for EP stall */ + *status = ep->stopped; + break; + } + *status = __cpu_to_le16(*status); + _pcd->ep0_pending = 1; + ep0->dwc_ep.start_xfer_buff = (uint8_t *) status; + ep0->dwc_ep.xfer_buff = (uint8_t *) status; + ep0->dwc_ep.dma_addr = _pcd->status_buf_dma_handle; + ep0->dwc_ep.xfer_len = 2; + ep0->dwc_ep.xfer_count = 0; + ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len; + dwc_otg_ep0_start_transfer(GET_CORE_IF(_pcd), &ep0->dwc_ep); + break; + case USB_REQ_CLEAR_FEATURE: + do_clear_feature(_pcd); + break; + case USB_REQ_SET_FEATURE: + do_set_feature(_pcd); + break; + case USB_REQ_SET_ADDRESS: + if (ctrl.bRequestType == USB_RECIP_DEVICE) { + dcfg_data_t dcfg = { + .d32 = 0}; + +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "SET_ADDRESS:%d\n", + __le16_to_cpu(ctrl.wValue)); + +#endif /* */ + dcfg.b.devaddr = __le16_to_cpu(ctrl.wValue); + dwc_modify_reg32(&dev_if->dev_global_regs->dcfg, 0, + dcfg.d32); +#ifdef DEBUG_EP0 + + DWC_DEBUGPL(DBG_PCDV, "dcfg(after updating address :0x%x, dcfg.b.devaddr:%d\n", + dwc_read_reg32(&dev_if->dev_global_regs->dcfg), dcfg.b.devaddr); +#endif + + do_setup_in_status_phase(_pcd); + return; + } + break; + case USB_REQ_SET_INTERFACE: + case USB_REQ_SET_CONFIGURATION: + + //DWC_DEBUGPL(DBG_PCD, "SET_CONFIGURATION\n"); + _pcd->request_config = 1; /* Configuration changed */ + do_gadget_setup(_pcd, &ctrl); + break; + case USB_REQ_SYNCH_FRAME: + do_gadget_setup(_pcd, &ctrl); + break; + default: + /* Call the Gadget Driver's setup functions */ + do_gadget_setup(_pcd, &ctrl); + break; + } +} + +/** + * This function completes the ep0 control transfer. + */ +static int32_t ep0_complete_request( dwc_otg_pcd_ep_t *_ep ) +{ + dwc_otg_core_if_t *core_if = GET_CORE_IF(_ep->pcd); + dwc_otg_dev_if_t *dev_if = core_if->dev_if; + dwc_otg_dev_in_ep_regs_t *in_ep_regs = + dev_if->in_ep_regs[_ep->dwc_ep.num]; +#ifdef DEBUG_EP0 + dwc_otg_dev_out_ep_regs_t *out_ep_regs = + dev_if->out_ep_regs[_ep->dwc_ep.num]; +#endif + deptsiz0_data_t deptsiz; + dwc_otg_pcd_request_t *req; + int is_last = 0; + dwc_otg_pcd_t *pcd = _ep->pcd; + static int counter = 0; /*DFX added*/ + counter++; + DWC_DEBUGPL(DBG_PCDV, "%s() %s\n", __func__, _ep->ep.name); + /* + if ( in_set_config == 1 ) { + printk(KERN_ERR "DFX ep0_complete_request in_set_config. ep0 pending: %d list empty:" + " %d ep.is_in: %d ep0State: %d counter: %d\n", + pcd->ep0_pending, list_empty(&_ep->queue), _ep->dwc_ep.is_in, + pcd->ep0state, counter); + } + if ( in_set_config == 2 ) { + printk(KERN_ERR "DFX ep0_complete_request in_set_ADDRESS. ep0 pending: %d list empty:" + " %d ep.is_in: %d ep0State: %d counter: %d\n", + pcd->ep0_pending, list_empty(&_ep->queue), _ep->dwc_ep.is_in, + pcd->ep0state, counter); + } + */ + if ((pcd->ep0_pending && list_empty(&_ep->queue)) /*|| counter == 1*/) { + if (_ep->dwc_ep.is_in) { +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "Do setup OUT status phase\n"); +#endif + do_setup_out_status_phase(pcd); + } else { +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "Do setup IN status phase\n"); +#endif + do_setup_in_status_phase(pcd); + } + pcd->ep0_pending = 0; + pcd->ep0state = EP0_STATUS; + return 1; + } + + + if (list_empty(&_ep->queue)) { + return 0; + } + req = list_entry(_ep->queue.next, dwc_otg_pcd_request_t, queue); + //printk(KERN_ERR "DFX compelete request req.zero: %d\n", req->req.zero); + + if (pcd->ep0state == EP0_STATUS) { + is_last = 1; + } + /* DFX TODO Gadget zero sets req.zero to true when the data it is sending + * to the host is shorter than the length specified by the host. In this + * case, if we also send a ZLP, we also somehow need to come back and + * do_setup_out_status_phase() Which apparently is not done. + */ + /* else if (req->req.zero) { + req->req.actual = _ep->dwc_ep.xfer_count; + //do_setup_in_status_phase (pcd); + req->req.zero = 0; + _ep->dwc_ep.xfer_len = 0; + _ep->dwc_ep.xfer_count = 0; + _ep->dwc_ep.sent_zlp = 1; + dwc_otg_ep0_start_transfer( GET_CORE_IF(pcd), &_ep->dwc_ep ); + return 1; + }*/ + else if (_ep->dwc_ep.is_in) { + //printk(KERN_ERR "DFX complete request counter: %d\n", counter); + deptsiz.d32 = dwc_read_reg32( &in_ep_regs->dieptsiz); +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "%s len=%d xfersize=%d pktcnt=%d\n", + _ep->ep.name, _ep->dwc_ep.xfer_len, + deptsiz.b.xfersize, deptsiz.b.pktcnt); +#endif + if (deptsiz.b.xfersize == 0) { + req->req.actual = _ep->dwc_ep.xfer_count; + /* Is a Zero Len Packet needed? */ + //if (req->req.zero) { +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, "Setup Rx ZLP\n"); +#endif + do_setup_out_status_phase(pcd); + } + } else { + /* ep0-OUT */ +#ifdef DEBUG_EP0 + deptsiz.d32 = dwc_read_reg32( &out_ep_regs->doeptsiz); + DWC_DEBUGPL(DBG_PCDV, "%s len=%d xsize=%d pktcnt=%d\n", + _ep->ep.name, _ep->dwc_ep.xfer_len, + deptsiz.b.xfersize, + deptsiz.b.pktcnt); +#endif + req->req.actual = _ep->dwc_ep.xfer_count; + + /* Is a Zero Len Packet needed? */ + //if (req->req.zero) { +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "Setup Tx ZLP\n"); +#endif + do_setup_in_status_phase(pcd); + } + + /* Complete the request */ + if (is_last) { + request_done(_ep, req, 0); + _ep->dwc_ep.start_xfer_buff = 0; + _ep->dwc_ep.xfer_buff = 0; + _ep->dwc_ep.xfer_len = 0; + return 1; + } + return 0; +} + +/** + * This function completes the request for the EP. If there are + * additional requests for the EP in the queue they will be started. + */ +static void complete_ep(dwc_otg_pcd_ep_t * _ep) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_ep->pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + dwc_otg_dev_in_ep_regs_t * in_ep_regs = + dev_if->in_ep_regs[_ep->dwc_ep.num]; + deptsiz_data_t deptsiz; + dwc_otg_pcd_request_t * req = 0; + int is_last = 0; + DWC_DEBUGPL(DBG_PCDV, "%s() %s-%s\n", __func__, _ep->ep.name, + (_ep->dwc_ep.is_in ? "IN" : "OUT")); + + /* Get any pending requests */ + if (!list_empty(&_ep->queue)) { + req = list_entry(_ep->queue.next, dwc_otg_pcd_request_t, queue); + } + DWC_DEBUGPL(DBG_PCD, "Requests %d\n", _ep->pcd->request_pending); + if (_ep->dwc_ep.is_in) { + deptsiz.d32 = dwc_read_reg32(&in_ep_regs->dieptsiz); + if (core_if->dma_enable) { + if (deptsiz.b.xfersize == 0) + _ep->dwc_ep.xfer_count = _ep->dwc_ep.xfer_len; + } + DWC_DEBUGPL(DBG_PCDV, "%s len=%d xfersize=%d pktcnt=%d\n", + _ep->ep.name, _ep->dwc_ep.xfer_len, + deptsiz.b.xfersize, deptsiz.b.pktcnt); + if (deptsiz.b.xfersize == 0 && deptsiz.b.pktcnt == 0 + && _ep->dwc_ep.xfer_count == _ep->dwc_ep.xfer_len) { + is_last = 1; + } else { + DWC_WARN("Incomplete transfer (%s-%s [siz=%d pkt=%d])\n", + _ep->ep.name, (_ep->dwc_ep.is_in ? "IN" : "OUT"), + deptsiz.b.xfersize, deptsiz.b.pktcnt); + } + } else { + dwc_otg_dev_out_ep_regs_t * out_ep_regs = + dev_if->out_ep_regs[_ep->dwc_ep.num]; + deptsiz.d32 = 0; + deptsiz.d32 = dwc_read_reg32(&out_ep_regs->doeptsiz); +#ifdef CONFIG_DEBUG + DWC_DEBUGPL(DBG_PCDV, + "addr %p, %s len=%d cnt=%d xsize=%d pktcnt=%d\n", + &out_ep_regs->doeptsiz, _ep->ep.name, + _ep->dwc_ep.xfer_len, + _ep->dwc_ep.xfer_count, + deptsiz.b.xfersize, deptsiz.b.pktcnt); + +#endif /* */ + is_last = 1; + } + + /* Complete the request */ + if (is_last) { +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * Since the 405EZ (Ultra) only support 2047 bytes as + * max transfer size, we have to split up bigger transfers + * into multiple transfers of 1024 bytes sized messages. + * I happens often, that transfers of 4096 bytes are + * required (zero-gadget, file_storage-gadget). + */ + if (_ep->dwc_ep.bytes_pending) { + dwc_otg_dev_in_ep_regs_t *in_regs = + core_if->dev_if->in_ep_regs[_ep->dwc_ep.num]; + gintmsk_data_t intr_mask = { .d32 = 0}; + + _ep->dwc_ep.xfer_len = _ep->dwc_ep.bytes_pending; + if (_ep->dwc_ep.xfer_len > MAX_XFER_LEN) { + _ep->dwc_ep.bytes_pending = _ep->dwc_ep.xfer_len - + MAX_XFER_LEN; + _ep->dwc_ep.xfer_len = MAX_XFER_LEN; + } else { + _ep->dwc_ep.bytes_pending = 0; + } + + /* + * Restart the current transfer with the next "chunk" + * of data. + */ + _ep->dwc_ep.xfer_count = 0; + deptsiz.d32 = dwc_read_reg32(&(in_regs->dieptsiz)); + deptsiz.b.xfersize = _ep->dwc_ep.xfer_len; + deptsiz.b.pktcnt = (_ep->dwc_ep.xfer_len - 1 + + _ep->dwc_ep.maxpacket) / _ep->dwc_ep.maxpacket; + dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32); + + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32( &core_if->core_global_regs->gintsts, + intr_mask.d32, 0); + dwc_modify_reg32( &core_if->core_global_regs->gintmsk, + intr_mask.d32, intr_mask.d32); + + /* + * Just return here if message was not completely + * transferred. + */ + return; + } +#endif + if (core_if->dma_enable) { + req->req.actual = + _ep->dwc_ep.xfer_len - deptsiz.b.xfersize; + } else { + req->req.actual = _ep->dwc_ep.xfer_count; + } + request_done(_ep, req, 0); + _ep->dwc_ep.start_xfer_buff = 0; + _ep->dwc_ep.xfer_buff = 0; + _ep->dwc_ep.xfer_len = 0; + + /* If there is a request in the queue start it. */ + start_next_request(_ep); + } +} + +/** + * This function handles EP0 Control transfers. + * + * The state of the control tranfers are tracked in + * <code>ep0state</code>. + */ +static void handle_ep0(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_pcd_ep_t * ep0 = &_pcd->ep0; + +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__); + print_ep0_state(_pcd); + +#endif /* */ + switch (_pcd->ep0state) { + case EP0_DISCONNECT: + break; + case EP0_IDLE: + _pcd->request_config = 0; + pcd_setup(_pcd); + break; + case EP0_IN_DATA_PHASE: + +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, "DATA_IN EP%d-%s: type=%d, mps=%d\n", + ep0->dwc_ep.num, + (ep0->dwc_ep.is_in ? "IN" : "OUT"), + ep0->dwc_ep.type, ep0->dwc_ep.maxpacket); + +#endif /* */ + if (core_if->dma_enable) { + /* + * For EP0 we can only program 1 packet at a time so we + * need to do the make calculations after each complete. + * Call write_packet to make the calculations, as in + * slave mode, and use those values to determine if we + * can complete. + */ + dwc_otg_ep_write_packet(core_if, &ep0->dwc_ep, 1); + } +#ifdef CONFIG_DWC_SLAVE + else { + dwc_otg_ep_write_packet(core_if, &ep0->dwc_ep, 0); + } +#endif + + if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) { + dwc_otg_ep0_continue_transfer(GET_CORE_IF(_pcd), + &ep0->dwc_ep); + DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n"); + } else { + ep0_complete_request(ep0); + DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n"); + } + break; + case EP0_OUT_DATA_PHASE: +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, "DATA_OUT EP%d-%s: type=%d, mps=%d\n", + ep0->dwc_ep.num, + (ep0->dwc_ep.is_in ? "IN" : "OUT"), + ep0->dwc_ep.type, ep0->dwc_ep.maxpacket); + +#endif /* */ + ep0_complete_request(ep0); + break; + case EP0_STATUS: + DWC_DEBUGPL(DBG_PCD, "CASE: EP0_STATUS\n"); + ep0_complete_request(ep0); + _pcd->ep0state = EP0_IDLE; + ep0->stopped = 1; + ep0->dwc_ep.is_in = 0; /* OUT for next SETUP */ + + /* Prepare for more SETUP Packets */ + if (core_if->dma_enable) { + ep0_out_start(core_if, _pcd); + } + if (!GET_CORE_IF(_pcd)->dma_enable) { + int i; + depctl_data_t diepctl; + diepctl.d32 =dwc_read_reg32(&core_if->dev_if->in_ep_regs[0]->diepctl); + if (_pcd->ep0.queue_sof) { + _pcd->ep0.queue_sof = 0; + start_next_request(&_pcd->ep0); + } + diepctl.d32 =dwc_read_reg32(&core_if->dev_if->in_ep_regs[0]->diepctl); + if (_pcd->ep0.queue_sof) { + _pcd->ep0.queue_sof = 0; + start_next_request(&_pcd->ep0); + } + for (i = 0; i < core_if->dev_if->num_in_eps; i++) { + diepctl.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[i + 1]->diepctl); + if (_pcd->in_ep[i].queue_sof) { + _pcd->in_ep[i].queue_sof = 0; + start_next_request(&_pcd->in_ep[i]); + } + } + } + break; + case EP0_STALL: + DWC_ERROR("EP0 STALLed, should not get here pcd_setup()\n"); + break; + } + +#ifdef DEBUG_EP0 + print_ep0_state(_pcd); +#endif /* */ +} + +/** + * Restart transfer + */ +static void restart_transfer(dwc_otg_pcd_t * _pcd, const uint32_t _epnum) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + deptsiz_data_t dieptsiz = {.d32 = 0}; + + //depctl_data_t diepctl = {.d32=0}; + dwc_otg_pcd_ep_t * ep; + dieptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[_epnum]->dieptsiz); + ep = get_in_ep(_pcd, _epnum); + +/* + if(_epnum != 0) + ep = &_pcd->in_ep[ _epnum - 1]; + else + ep = &_pcd->ep0; +*/ + DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x xfer_len=%0x" + " stopped=%d\n", ep->dwc_ep.xfer_buff, + ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len, + ep->stopped); + + /* + * If xfersize is 0 and pktcnt in not 0, resend the last packet. + */ + if (dieptsiz.b.pktcnt && dieptsiz.b.xfersize == 0 + && ep->dwc_ep.start_xfer_buff != 0) { + if (ep->dwc_ep.xfer_len <= ep->dwc_ep.maxpacket) { + ep->dwc_ep.xfer_count = 0; + ep->dwc_ep.xfer_buff = ep->dwc_ep.start_xfer_buff; + } else { + ep->dwc_ep.xfer_count -= ep->dwc_ep.maxpacket; + + /* convert packet size to dwords. */ + ep->dwc_ep.xfer_buff -= ep->dwc_ep.maxpacket; + } + ep->stopped = 0; + DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x " + "xfer_len=%0x stopped=%d\n", ep->dwc_ep.xfer_buff, + ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len, + ep->stopped ); + if (_epnum == 0) { + dwc_otg_ep0_start_transfer(core_if, &ep->dwc_ep); + } else { + dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep); + } + } +} + +/** + * handle the IN EP disable interrupt. + */ +static inline void handle_in_ep_disable_intr(dwc_otg_pcd_t * _pcd, + const uint32_t _epnum) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + deptsiz_data_t dieptsiz = {.d32 = 0}; + dctl_data_t dctl = {.d32 = 0}; + dwc_otg_pcd_ep_t * ep; + dwc_ep_t * dwc_ep; + ep = get_in_ep(_pcd, _epnum); + dwc_ep = &ep->dwc_ep; +/* + if(_epnum != 0) + { + ep = &_pcd->in_ep[ _epnum - 1]; + dwc_ep = &_pcd->in_ep[ _epnum - 1].dwc_ep; + } + else + { + ep = &_pcd->ep0; + dwc_ep = &_pcd->ep0.dwc_ep; + } +*/ + DWC_DEBUGPL(DBG_PCD, "diepctl%d=%0x\n", _epnum, + dwc_read_reg32(&dev_if->in_ep_regs[_epnum]->diepctl)); + dieptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[_epnum]->dieptsiz); + DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n", dieptsiz.b.pktcnt, + dieptsiz.b.xfersize); + if (ep->stopped) { + + /* Flush the Tx FIFO */ + /** @todo NGS: This is not the correct FIFO */ + dwc_otg_flush_tx_fifo(core_if, 0); + + /* Clear the Global IN NP NAK */ + dctl.d32 = 0; + dctl.b.cgnpinnak = 1; + dwc_modify_reg32(&dev_if->dev_global_regs->dctl, dctl.d32, 0); + + /* Restart the transaction */ + if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) { + restart_transfer(_pcd, _epnum); + } + } else { + + /* Restart the transaction */ + if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) { + restart_transfer(_pcd, _epnum); + } + DWC_DEBUGPL(DBG_ANY, "STOPPED!!!\n"); + } +} + +/** + * Handler for the IN EP timeout handshake interrupt. + */ +static inline void handle_in_ep_timeout_intr(dwc_otg_pcd_t * _pcd, + const uint32_t _epnum) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + +#ifdef CONFIG_DWC_DEBUG + deptsiz_data_t dieptsiz = {.d32 = 0}; + uint32_t epnum = 0; + +#endif /* */ + dctl_data_t dctl = { + .d32 = 0}; + dwc_otg_pcd_ep_t * ep; + gintmsk_data_t intr_mask = {.d32 = 0}; + ep = get_in_ep(_pcd, _epnum); + +/* + if(_epnum != 0) + ep = &_pcd->in_ep[ _epnum - 1]; + else + ep = &_pcd->ep0; +*/ + + /* Disable the NP Tx Fifo Empty Interrrupt */ + if (!core_if->dma_enable) { + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&core_if->core_global_regs->gintmsk, + intr_mask.d32, 0); + } + + /** @todo NGS Check EP type. + * Implement for Periodic EPs */ + /* + * Non-periodic EP + */ + /* Enable the Global IN NAK Effective Interrupt */ + intr_mask.d32 = 0; /* Bug fixed - clear mask b4 reusing */ + intr_mask.b.ginnakeff = 1; + dwc_modify_reg32(&core_if->core_global_regs->gintmsk, 0, + intr_mask.d32); + + /* Set Global IN NAK */ + dctl.b.sgnpinnak = 1; + dwc_modify_reg32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32); + ep->stopped = 1; + +#ifdef CONFIG_DWC_DEBUG + dieptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dieptsiz); + DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n", dieptsiz.b.pktcnt, + dieptsiz.b.xfersize); + +#endif /* */ + +#ifdef DISABLE_PERIODIC_EP + /* + * Set the NAK bit for this EP to + * start the disable process. + */ + diepctl.d32 = 0; + diepctl.b.snak = 1; + dwc_modify_reg32(&dev_if->in_ep_regs[epnum]->diepctl, diepctl.d32, + diepctl.d32); + ep->disabling = 1; + ep->stopped = 1; + +#endif /* */ +} + +/** + * This interrupt indicates that an IN EP has a pending Interrupt. + * The sequence for handling the IN EP interrupt is shown below: + * -# Read the Device All Endpoint Interrupt register + * -# Repeat the following for each IN EP interrupt bit set (from + * LSB to MSB). + * -# Read the Device Endpoint Interrupt (DIEPINTn) register + * -# If "Transfer Complete" call the request complete function + * -# If "Endpoint Disabled" complete the EP disable procedure. + * -# If "AHB Error Interrupt" log error + * -# If "Time-out Handshake" log error + * -# If "IN Token Received when TxFIFO Empty" write packet to Tx + * FIFO. + * -# If "IN Token EP Mismatch" (disable, this is handled by EP + * Mismatch Interrupt) + */ +static int32_t dwc_otg_pcd_handle_in_ep_intr(dwc_otg_pcd_t * _pcd) +{ + +#define CLEAR_IN_EP_INTR(__core_if,__epnum,__intr) \ + do { \ + diepint_data_t diepint = {.d32 = 0}; \ + diepint.b.__intr = 1; \ + dwc_write_reg32(&__core_if->dev_if->in_ep_regs[__epnum]->diepint, \ + diepint.d32); \ + } while (0) + + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + dwc_otg_dev_if_t * dev_if = core_if->dev_if; + diepint_data_t diepint = {.d32 = 0}; + depctl_data_t diepctl = {.d32 = 0}; + uint32_t ep_intr; + uint32_t epnum = 0; + dwc_otg_pcd_ep_t * ep; + dwc_ep_t * dwc_ep; + uint32_t _empty_msk, _diepctl; + gintmsk_data_t intr_mask = {.d32 = 0}; + DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd); + + /* Read in the device interrupt bits */ + ep_intr = dwc_otg_read_dev_all_in_ep_intr(core_if); + + /* Service the Device IN interrupts for each endpoint */ + while (ep_intr) { + if (ep_intr & 0x1) { + /* Get EP pointer */ + ep = get_in_ep(_pcd, epnum); + dwc_ep = &ep->dwc_ep; + _diepctl = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->diepctl); + _empty_msk = dwc_read_reg32(&dev_if->dev_global_regs->dtknqr4_fifoemptymsk); + DWC_DEBUGPL(DBG_PCDV, + "IN EP INTERRUPT - %d\nepmty_msk - %8x diepctl - %8x\n", + epnum, _empty_msk, _diepctl); + DWC_DEBUGPL(DBG_PCD, "EP%d-%s: type=%d, mps=%d\n", + dwc_ep->num,(dwc_ep->is_in ? "IN" : "OUT"), + dwc_ep->type, dwc_ep->maxpacket); + diepint.d32 = dwc_otg_read_dev_in_ep_intr(core_if, dwc_ep); + DWC_DEBUGPL(DBG_PCDV, "EP %d Interrupt Register - 0x%x\n", + epnum, diepint.d32); + + /* Transfer complete */ + if (diepint.b.xfercompl) { + DWC_DEBUGPL(DBG_PCD, + "EP%d IN Xfer Complete\n", epnum); + + /* Disable the NP Tx FIFO Empty + * Interrrupt */ + if (core_if->en_multiple_tx_fifo == 0) { + intr_mask.b.nptxfempty = 1; + dwc_modify_reg32(&core_if->core_global_regs->gintmsk, + intr_mask.d32, 0); + } else { + /* Disable the Tx FIFO Empty Interrupt for this EP */ + uint32_t fifoemptymsk = 0x1 << dwc_ep->num; + dwc_modify_reg32(&core_if->dev_if->dev_global_regs-> + dtknqr4_fifoemptymsk,fifoemptymsk, 0); + } + + /* Clear the bit in DIEPINTn for this interrupt */ + CLEAR_IN_EP_INTR(core_if, epnum, xfercompl); + + /* Complete the transfer */ + if (epnum == 0) { + handle_ep0(_pcd); + } else { + complete_ep(ep); + } + } + + /* Endpoint disable */ + if (diepint.b.epdisabled) { + DWC_DEBUGPL(DBG_ANY, "EP%d IN disabled\n", epnum); + handle_in_ep_disable_intr(_pcd, epnum); + + /* Clear the bit in DIEPINTn for this interrupt */ + CLEAR_IN_EP_INTR(core_if, epnum, epdisabled); + } + + /* AHB Error */ + if (diepint.b.ahberr) { + DWC_DEBUGPL(DBG_ANY, "EP%d IN AHB Error\n", epnum); + + /* Clear the bit in DIEPINTn for this interrupt */ + CLEAR_IN_EP_INTR(core_if, epnum, ahberr); + } + + /* TimeOUT Handshake (non-ISOC IN EPs) */ + if (diepint.b.timeout) { + DWC_DEBUGPL(DBG_ANY, "EP%d IN Time-out\n", epnum); + handle_in_ep_timeout_intr(_pcd, epnum); + CLEAR_IN_EP_INTR(core_if, epnum, timeout); + } + + /** IN Token received with TxF Empty */ + if (diepint.b.intktxfemp) { + DWC_DEBUGPL(DBG_ANY,"EP%d IN TKN TxFifo Empty\n",epnum); + if (!ep->stopped && epnum != 0) { + diepmsk_data_t diepmsk = {.d32 = 0}; + diepmsk.b.intktxfemp = 1; + dwc_modify_reg32(&dev_if-> dev_global_regs-> + diepmsk, diepmsk.d32, 0); +#ifdef CONFIG_405EZ + /* + * Added-sr: 2007-07-26 + * + * Only start the next transfer, when currently + * no other transfer is active on this endpoint. + */ + if (dwc_ep->active == 0) + start_next_request(ep); +#else + start_next_request(ep); +#endif + } + CLEAR_IN_EP_INTR(core_if, epnum, intktxfemp); + } + + /** IN Token Received with EP mismatch */ + if (diepint.b.intknepmis) { + DWC_DEBUGPL(DBG_ANY,"EP%d IN TKN EP Mismatch\n", + epnum); + CLEAR_IN_EP_INTR(core_if, epnum, intknepmis); + } + + /** IN Endpoint NAK Effective */ + if (diepint.b.inepnakeff) { + DWC_DEBUGPL(DBG_ANY, "EP%d IN EP NAK Effective\n",epnum); + + /* Periodic EP */ + if (ep->disabling) { + diepctl.d32 = 0; + diepctl.b.snak = 1; + diepctl.b.epdis = 1; + dwc_modify_reg32(&dev_if->in_ep_regs[epnum]-> + diepctl, diepctl.d32,diepctl.d32); + } + CLEAR_IN_EP_INTR(core_if, epnum, inepnakeff); + } + + /** IN EP Tx FIFO Empty Intr */ + if (diepint.b.emptyintr) { + DWC_DEBUGPL(DBG_ANY,"EP%d Tx FIFO Empty Intr \n",epnum); + write_empty_tx_fifo(_pcd, epnum); + /* VJ updated based on v2.65a */ + // CLEAR_IN_EP_INTR(core_if, epnum, emptyintr); + } + } + epnum++; + ep_intr >>= 1; + } + return 1; +#undef CLEAR_IN_EP_INTR +} + +/** + * This interrupt indicates that an OUT EP has a pending Interrupt. + * The sequence for handling the OUT EP interrupt is shown below: + * -# Read the Device All Endpoint Interrupt register + * -# Repeat the following for each OUT EP interrupt bit set (from + * LSB to MSB). + * -# Read the Device Endpoint Interrupt (DOEPINTn) register + * -# If "Transfer Complete" call the request complete function + * -# If "Endpoint Disabled" complete the EP disable procedure. + * -# If "AHB Error Interrupt" log error + * -# If "Setup Phase Done" process Setup Packet (See Standard USB + * Command Processing) + */ +static int32_t dwc_otg_pcd_handle_out_ep_intr(dwc_otg_pcd_t * _pcd) +{ + +#define CLEAR_OUT_EP_INTR(__core_if,__epnum,__intr) \ + do { \ + doepint_data_t doepint = { .d32 = 0}; \ + doepint.b.__intr = 1; \ + dwc_write_reg32(&__core_if->dev_if->out_ep_regs[__epnum]->doepint, \ + doepint.d32); \ + } while (0) + + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + uint32_t ep_intr; + doepint_data_t doepint = {.d32 = 0}; + uint32_t epnum = 0; + dwc_ep_t * dwc_ep; + DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__); + + /* Read in the device interrupt bits */ + ep_intr = dwc_otg_read_dev_all_out_ep_intr(core_if); + while (ep_intr) { + if (ep_intr & 0x1) { + /* Get EP pointer */ + dwc_ep = &((get_out_ep(_pcd, epnum))->dwc_ep); +// dwc_ep = &_pcd->out_ep[ epnum - 1].dwc_ep; +#ifdef VERBOSE + DWC_DEBUGPL(DBG_PCDV, "EP%d-%s: type=%d, mps=%d\n", + dwc_ep->num, + (dwc_ep->is_in ? "IN" : "OUT"), + dwc_ep->type, dwc_ep->maxpacket); + +#endif /* */ + doepint.d32 = dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep); + + /* Transfer complete */ + if (doepint.b.xfercompl) { + DWC_DEBUGPL(DBG_PCD,"EP%d OUT Xfer Complete\n",epnum); + + /* Clear the bit in DOEPINTn for this interrupt */ + CLEAR_OUT_EP_INTR(core_if, epnum,xfercompl); + if (epnum == 0) { + handle_ep0(_pcd); + } else { + complete_ep(get_out_ep(_pcd, epnum)); + // complete_ep( &_pcd->out_ep[ epnum - 1] ); + } + } + + /* Endpoint disable */ + if (doepint.b.epdisabled) { + DWC_DEBUGPL(DBG_PCD, "EP%d OUT disabled\n",epnum); + + /* Clear the bit in DOEPINTn for this interrupt */ + CLEAR_OUT_EP_INTR(core_if, epnum,epdisabled); + } + + /* AHB Error */ + if (doepint.b.ahberr) { + DWC_DEBUGPL(DBG_PCD, "EP%d OUT AHB Error\n", + epnum); + DWC_DEBUGPL(DBG_PCD, "EP DMA REG %d \n", + core_if->dev_if->out_ep_regs[epnum]->doepdma); + CLEAR_OUT_EP_INTR(core_if, epnum, ahberr); + } + + /* Setup Phase Done (contorl EPs) */ + if (doepint.b.setup) { +#ifdef DEBUG_EP0 + DWC_DEBUGPL(DBG_PCD, "EP%d SETUP Done\n",epnum); + +#endif /* */ + handle_ep0(_pcd); + CLEAR_OUT_EP_INTR(core_if, epnum, setup); + } + } + epnum++; + ep_intr >>= 1; + } + return 1; + +#undef CLEAR_OUT_EP_INTR +} + +/** + * Incomplete ISO IN Transfer Interrupt. + * This interrupt indicates one of the following conditions occurred + * while transmitting an ISOC transaction. + * - Corrupted IN Token for ISOC EP. + * - Packet not complete in FIFO. + * The follow actions will be taken: + * -# Determine the EP + * -# Set incomplete flag in dwc_ep structure + * -# Disable EP; when "Endpoint Disabled" interrupt is received + * Flush FIFO + */ +int32_t dwc_otg_pcd_handle_incomplete_isoc_in_intr(dwc_otg_pcd_t * _pcd) +{ + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + DWC_PRINT("INTERRUPT Handler not implemented for %s\n", + "IN ISOC Incomplete"); + intr_mask.b.incomplisoin = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.incomplisoin = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * Incomplete ISO OUT Transfer Interrupt. + * + * This interrupt indicates that the core has dropped an ISO OUT + * packet. The following conditions can be the cause: + * - FIFO Full, the entire packet would not fit in the FIFO. + * - CRC Error + * - Corrupted Token + * The follow actions will be taken: + * -# Determine the EP + * -# Set incomplete flag in dwc_ep structure + * -# Read any data from the FIFO + * -# Disable EP. when "Endpoint Disabled" interrupt is received + * re-enable EP. + */ +int32_t dwc_otg_pcd_handle_incomplete_isoc_out_intr(dwc_otg_pcd_t * _pcd) +{ + + /** @todo implement ISR */ + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + DWC_PRINT("INTERRUPT Handler not implemented for %s\n", + "OUT ISOC Incomplete"); + intr_mask.b.incomplisoout = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.incomplisoout = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * This function handles the Global IN NAK Effective interrupt. + * + */ +int32_t dwc_otg_pcd_handle_in_nak_effective(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_dev_if_t * dev_if = GET_CORE_IF(_pcd)->dev_if; + depctl_data_t diepctl = {.d32 = 0}; + depctl_data_t diepctl_rd = {.d32 = 0}; + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + int i; + DWC_DEBUGPL(DBG_PCD, "Global IN NAK Effective\n"); + + /* Disable all active IN EPs */ + diepctl.b.epdis = 1; + diepctl.b.snak = 1; + for (i = 0; i <= dev_if->num_in_eps; i++) { + diepctl_rd.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->diepctl); + if (diepctl_rd.b.epena) { + dwc_write_reg32(&dev_if->in_ep_regs[i]->diepctl, diepctl.d32); + } + } + + /* Disable the Global IN NAK Effective Interrupt */ + intr_mask.b.ginnakeff = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.ginnakeff = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * OUT NAK Effective. + * + */ +int32_t dwc_otg_pcd_handle_out_nak_effective(dwc_otg_pcd_t * _pcd) +{ + gintmsk_data_t intr_mask = {.d32 = 0}; + gintsts_data_t gintsts; + DWC_PRINT("INTERRUPT Handler not implemented for %s\n", + "Global IN NAK Effective\n"); + + /* Disable the Global IN NAK Effective Interrupt */ + intr_mask.b.goutnakeff = 1; + dwc_modify_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintmsk, + intr_mask.d32, 0); + + /* Clear interrupt */ + gintsts.d32 = 0; + gintsts.b.goutnakeff = 1; + dwc_write_reg32(&GET_CORE_IF(_pcd)->core_global_regs->gintsts, + gintsts.d32); + return 1; +} + +/** + * PCD interrupt handler. + * + * The PCD handles the device interrupts. Many conditions can cause a + * device interrupt. When an interrupt occurs, the device interrupt + * service routine determines the cause of the interrupt and + * dispatches handling to the appropriate function. These interrupt + * handling functions are described below. + * + * All interrupt registers are processed from LSB to MSB. + * + */ +int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * _pcd) +{ + dwc_otg_core_if_t * core_if = GET_CORE_IF(_pcd); + +#ifdef VERBOSE + dwc_otg_core_global_regs_t * global_regs = + core_if->core_global_regs; +#endif /* */ + gintsts_data_t gintr_status; + int32_t retval = 0; + + if (dwc_otg_is_device_mode(core_if)) { + SPIN_LOCK(&_pcd->lock); + +#ifdef VERBOSE + DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%08x gintmsk=%08x\n", + __func__, + dwc_read_reg32(&global_regs->gintsts), + dwc_read_reg32(&global_regs->gintmsk)); + +#endif /* */ + gintr_status.d32 = dwc_otg_read_core_intr(core_if); + if (!gintr_status.d32) { + return 0; + } + DWC_DEBUGPL(DBG_PCDV, "%s: gintsts&gintmsk=%08x\n", __func__, + gintr_status.d32); + if (gintr_status.b.sofintr) { + retval |= dwc_otg_pcd_handle_sof_intr(_pcd); + } +#ifndef CONFIG_OTG_PLB_DMA_TASKLET + if (gintr_status.b.rxstsqlvl) { + retval |= dwc_otg_pcd_handle_rx_status_q_level_intr(_pcd); + } + if (gintr_status.b.nptxfempty) { + retval |= dwc_otg_pcd_handle_np_tx_fifo_empty_intr(_pcd); + } +#endif + if (gintr_status.b.ginnakeff) { + retval |= dwc_otg_pcd_handle_in_nak_effective(_pcd); + } + if (gintr_status.b.goutnakeff) { + retval |= dwc_otg_pcd_handle_out_nak_effective(_pcd); + } + if (gintr_status.b.i2cintr) { + retval |= dwc_otg_pcd_handle_i2c_intr(_pcd); + } + if (gintr_status.b.erlysuspend) { + retval |= dwc_otg_pcd_handle_early_suspend_intr(_pcd); + } + if (gintr_status.b.usbreset) { + retval |= dwc_otg_pcd_handle_usb_reset_intr(_pcd); + } + if (gintr_status.b.enumdone) { + retval |= dwc_otg_pcd_handle_enum_done_intr(_pcd); + } + if (gintr_status.b.isooutdrop) { + retval |= dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(_pcd); + } + if (gintr_status.b.eopframe) { + retval |= dwc_otg_pcd_handle_end_periodic_frame_intr(_pcd); + } + if (gintr_status.b.epmismatch) { + retval |= dwc_otg_pcd_handle_ep_mismatch_intr(core_if); + } + if (gintr_status.b.inepint) { + retval |= dwc_otg_pcd_handle_in_ep_intr(_pcd); + } + if (gintr_status.b.outepintr) { + retval |= dwc_otg_pcd_handle_out_ep_intr(_pcd); + } + if (gintr_status.b.incomplisoin) { + retval |= dwc_otg_pcd_handle_incomplete_isoc_in_intr(_pcd); + } + if (gintr_status.b.incomplisoout) { + retval |= dwc_otg_pcd_handle_incomplete_isoc_out_intr(_pcd); + } +#ifdef VERBOSE + DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%0x\n", __func__, + dwc_read_reg32(&global_regs->gintsts)); + +#endif /* */ +#ifdef CONFIG_OTG_PLB_DMA_TASKLET + if (gintr_status.b.rxstsqlvl) { + retval |= dwc_otg_pcd_handle_rx_status_q_level_intr(_pcd); + } + if (!atomic_read(&release_later) && gintr_status.b.nptxfempty) { + retval |= dwc_otg_pcd_handle_np_tx_fifo_empty_intr(_pcd); + } +#endif + SPIN_UNLOCK(&_pcd->lock); + } + return retval; +} + + +#endif /* DWC_HOST_ONLY */ diff --git a/drivers/usb/gadget/dwc_otg/dwc_otg_regs.h b/drivers/usb/gadget/dwc_otg/dwc_otg_regs.h new file mode 100644 index 00000000000..e6fc661d762 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/dwc_otg_regs.h @@ -0,0 +1,3606 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_regs.h $ + * $Revision: #8 $ + * $Date: 2007/02/07 $ + * $Change: 791271 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#ifndef __DWC_OTG_REGS_H__ +#define __DWC_OTG_REGS_H__ + +/** + * @file + * + * This file contains the data structures for accessing the DWC_otg core registers. + * + * The application interfaces with the HS OTG core by reading from and + * writing to the Control and Status Register (CSR) space through the + * AHB Slave interface. These registers are 32 bits wide, and the + * addresses are 32-bit-block aligned. + * CSRs are classified as follows: + * - Core Global Registers + * - Device Mode Registers + * - Device Global Registers + * - Device Endpoint Specific Registers + * - Host Mode Registers + * - Host Global Registers + * - Host Port CSRs + * - Host Channel Specific Registers + * + * Only the Core Global registers can be accessed in both Device and + * Host modes. When the HS OTG core is operating in one mode, either + * Device or Host, the application must not access registers from the + * other mode. When the core switches from one mode to another, the + * registers in the new mode of operation must be reprogrammed as they + * would be after a power-on reset. + */ + +/****************************************************************************/ +/** DWC_otg Core registers . + * The dwc_otg_core_global_regs structure defines the size + * and relative field offsets for the Core Global registers. + */ +typedef struct dwc_otg_core_global_regs +{ + /** OTG Control and Status Register. <i>Offset: 000h</i> */ + volatile uint32_t gotgctl; + /** OTG Interrupt Register. <i>Offset: 004h</i> */ + volatile uint32_t gotgint; + /**Core AHB Configuration Register. <i>Offset: 008h</i> */ + volatile uint32_t gahbcfg; + +#define DWC_GLBINTRMASK 0x0001 +#define DWC_DMAENABLE 0x0020 +#define DWC_NPTXEMPTYLVL_EMPTY 0x0080 +#define DWC_NPTXEMPTYLVL_HALFEMPTY 0x0000 +#define DWC_PTXEMPTYLVL_EMPTY 0x0100 +#define DWC_PTXEMPTYLVL_HALFEMPTY 0x0000 + + /**Core USB Configuration Register. <i>Offset: 00Ch</i> */ + volatile uint32_t gusbcfg; + /**Core Reset Register. <i>Offset: 010h</i> */ + volatile uint32_t grstctl; + /**Core Interrupt Register. <i>Offset: 014h</i> */ + volatile uint32_t gintsts; + /**Core Interrupt Mask Register. <i>Offset: 018h</i> */ + volatile uint32_t gintmsk; + /**Receive Status Queue Read Register (Read Only). <i>Offset: 01Ch</i> */ + volatile uint32_t grxstsr; + /**Receive Status Queue Read & POP Register (Read Only). <i>Offset: 020h</i>*/ + volatile uint32_t grxstsp; + /**Receive FIFO Size Register. <i>Offset: 024h</i> */ + volatile uint32_t grxfsiz; + /**Non Periodic Transmit FIFO Size Register. <i>Offset: 028h</i> */ + volatile uint32_t gnptxfsiz; + /**Non Periodic Transmit FIFO/Queue Status Register (Read + * Only). <i>Offset: 02Ch</i> */ + volatile uint32_t gnptxsts; + /**I2C Access Register. <i>Offset: 030h</i> */ + volatile uint32_t gi2cctl; + /**PHY Vendor Control Register. <i>Offset: 034h</i> */ + volatile uint32_t gpvndctl; + /**General Purpose Input/Output Register. <i>Offset: 038h</i> */ + volatile uint32_t ggpio; + /**User ID Register. <i>Offset: 03Ch</i> */ + volatile uint32_t guid; + /**Synopsys ID Register (Read Only). <i>Offset: 040h</i> */ + volatile uint32_t gsnpsid; + /**User HW Config1 Register (Read Only). <i>Offset: 044h</i> */ + volatile uint32_t ghwcfg1; + /**User HW Config2 Register (Read Only). <i>Offset: 048h</i> */ + volatile uint32_t ghwcfg2; +#define DWC_SLAVE_ONLY_ARCH 0 +#define DWC_EXT_DMA_ARCH 1 +#define DWC_INT_DMA_ARCH 2 + +#define DWC_MODE_HNP_SRP_CAPABLE 0 +#define DWC_MODE_SRP_ONLY_CAPABLE 1 +#define DWC_MODE_NO_HNP_SRP_CAPABLE 2 +#define DWC_MODE_SRP_CAPABLE_DEVICE 3 +#define DWC_MODE_NO_SRP_CAPABLE_DEVICE 4 +#define DWC_MODE_SRP_CAPABLE_HOST 5 +#define DWC_MODE_NO_SRP_CAPABLE_HOST 6 + + /**User HW Config3 Register (Read Only). <i>Offset: 04Ch</i> */ + volatile uint32_t ghwcfg3; + /**User HW Config4 Register (Read Only). <i>Offset: 050h</i>*/ + volatile uint32_t ghwcfg4; + /** Reserved <i>Offset: 054h-0FFh</i> */ + uint32_t reserved[43]; + /** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */ + volatile uint32_t hptxfsiz; + /** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled, + otherwise Device Transmit FIFO#n Register. + * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */ + volatile uint32_t dptxfsiz_dieptxf[15]; +} dwc_otg_core_global_regs_t; + + +#if defined(CONFIG_4xx) +/** + * This union represents the bit fields of the Core OTG Control + * and Status Register (GOTGCTL). Set the bits using the bit + * fields then write the <i>d32</i> value to the register. + */ +typedef union gotgctl_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct + { + unsigned reserved31_21 : 11; + unsigned currmod : 1; + unsigned bsesvld : 1; + unsigned asesvld : 1; + unsigned reserved17 : 1; + unsigned conidsts : 1; + unsigned reserved1_12 : 4; + unsigned devhnpen : 1; + unsigned hstsethnpen : 1; + unsigned hnpreq : 1; + unsigned hstnegscs : 1; + unsigned reserved07_02 : 6; + unsigned sesreq : 1; + unsigned sesreqscs : 1; + } b; +} gotgctl_data_t; + +/** + * This union represents the bit fields of the Core OTG Interrupt Register + * (GOTGINT). Set/clear the bits using the bit fields then write the <i>d32</i> + * value to the register. + */ +typedef union gotgint_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct + { + /** Current Mode */ + unsigned reserved31_20 : 12; + /** Debounce Done */ + unsigned debdone : 1; + /** A-Device Timeout Change */ + unsigned adevtoutchng : 1; + /** Host Negotiation Detected */ + unsigned hstnegdet : 1; + unsigned reserver16_10 : 7; + /** Host Negotiation Success Status Change */ + unsigned hstnegsucstschng : 1; + /** Session Request Success Status Change */ + unsigned sesreqsucstschng : 1; + unsigned reserved3_7 : 5; + /** Session End Detected */ + unsigned sesenddet : 1; + unsigned reserved01_00 : 2; + } b; +} gotgint_data_t; + + +/** + * This union represents the bit fields of the Core AHB Configuration + * Register (GAHBCFG). Set/clear the bits using the bit fields then + * write the <i>d32</i> value to the register. + */ +typedef union gahbcfg_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct + { + unsigned reserved9_31 : 23; + unsigned ptxfemplvl : 1; +#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY 1 +#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY 0 + unsigned nptxfemplvl_txfemplvl : 1; /*fscz*/ + unsigned reserved : 1; + + unsigned dmaenable : 1; +#define DWC_GAHBCFG_DMAENABLE 1 + + unsigned hburstlen : 4; +#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE 0 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR 1 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR4 3 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR8 5 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR16 7 + + unsigned glblintrmsk : 1; +#define DWC_GAHBCFG_GLBINT_ENABLE 1 + } b; +} gahbcfg_data_t; + +/** + * This union represents the bit fields of the Core USB Configuration + * Register (GUSBCFG). Set the bits using the bit fields then write + * the <i>d32</i> value to the register. + */ +typedef union gusbcfg_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct + { + unsigned corrupt_tx_packet: 1; /*fscz*/ + unsigned force_device_mode: 1; + unsigned force_host_mode: 1; + unsigned reserved23_28 : 6; + unsigned term_sel_dl_pulse : 1; + unsigned ulpi_int_vbus_indicator : 1; + unsigned ulpi_ext_vbus_drv : 1; + unsigned ulpi_clk_sus_m : 1; + unsigned ulpi_auto_res : 1; + unsigned ulpi_fsls : 1; + + unsigned otgutmifssel : 1; + unsigned phylpwrclksel : 1; + unsigned nptxfrwnden : 1; + unsigned usbtrdtim : 4; + unsigned hnpcap : 1; + unsigned srpcap : 1; + unsigned ddrsel : 1; + unsigned physel : 1; + unsigned fsintf : 1; + unsigned ulpi_utmi_sel : 1; + unsigned phyif : 1; + unsigned toutcal : 3; + } b; +} gusbcfg_data_t; + +/** + * This union represents the bit fields of the Core Reset Register + * (GRSTCTL). Set/clear the bits using the bit fields then write the + * <i>d32</i> value to the register. + */ +typedef union grstctl_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct + { + /** AHB Master Idle. Indicates the AHB Master State + * Machine is in IDLE condition. */ + unsigned ahbidle : 1; + + /** DMA Request Signal. Indicated DMA request is in + * probress. Used for debug purpose. */ + unsigned dmareq : 1; + + /** Reserved */ + unsigned reserved29_11 : 19; + + /** TxFIFO Number (TxFNum) (Device and Host). + * + * This is the FIFO number which needs to be flushed, + * using the TxFIFO Flush bit. This field should not + * be changed until the TxFIFO Flush bit is cleared by + * the core. + * - 0x0 : Non Periodic TxFIFO Flush + * - 0x1 : Periodic TxFIFO #1 Flush in device mode + * or Periodic TxFIFO in host mode + * - 0x2 : Periodic TxFIFO #2 Flush in device mode. + * - ... + * - 0xF : Periodic TxFIFO #15 Flush in device mode + * - 0x10: Flush all the Transmit NonPeriodic and + * Transmit Periodic FIFOs in the core + */ + unsigned txfnum : 5; + + /** TxFIFO Flush (TxFFlsh) (Device and Host). + * + * This bit is used to selectively flush a single or + * all transmit FIFOs. The application must first + * ensure that the core is not in the middle of a + * transaction. <p>The application should write into + * this bit, only after making sure that neither the + * DMA engine is writing into the TxFIFO nor the MAC + * is reading the data out of the FIFO. <p>The + * application should wait until the core clears this + * bit, before performing any operations. This bit + * will takes 8 clocks (slowest of PHY or AHB clock) + * to clear. + */ + unsigned txfflsh : 1; + + /** RxFIFO Flush (RxFFlsh) (Device and Host) + * + * The application can flush the entire Receive FIFO + * using this bit. <p>The application must first + * ensure that the core is not in the middle of a + * transaction. <p>The application should write into + * this bit, only after making sure that neither the + * DMA engine is reading from the RxFIFO nor the MAC + * is writing the data in to the FIFO. <p>The + * application should wait until the bit is cleared + * before performing any other operations. This bit + * will takes 8 clocks (slowest of PHY or AHB clock) + * to clear. + */ + unsigned rxfflsh : 1; + + /** In Token Sequence Learning Queue Flush + * (INTknQFlsh) (Device Only) + */ + unsigned intknqflsh : 1; + + /** Host Frame Counter Reset (Host Only)<br> + * + * The application can reset the (micro)frame number + * counter inside the core, using this bit. When the + * (micro)frame counter is reset, the subsequent SOF + * sent out by the core, will have a (micro)frame + * number of 0. + */ + unsigned hstfrm : 1; + + /** Hclk Soft Reset + * + * The application uses this bit to reset the control logic in + * the AHB clock domain. Only AHB clock domain pipelines are + * reset. + */ + unsigned hsftrst : 1; + + /** Core Soft Reset (CSftRst) (Device and Host) + * + * The application can flush the control logic in the + * entire core using this bit. This bit resets the + * pipelines in the AHB Clock domain as well as the + * PHY Clock domain. + * + * The state machines are reset to an IDLE state, the + * control bits in the CSRs are cleared, all the + * transmit FIFOs and the receive FIFO are flushed. + * + * The status mask bits that control the generation of + * the interrupt, are cleared, to clear the + * interrupt. The interrupt status bits are not + * cleared, so the application can get the status of + * any events that occurred in the core after it has + * set this bit. + * + * Any transactions on the AHB are terminated as soon + * as possible following the protocol. Any + * transactions on the USB are terminated immediately. + * + * The configuration settings in the CSRs are + * unchanged, so the software doesn't have to + * reprogram these registers (Device + * Configuration/Host Configuration/Core System + * Configuration/Core PHY Configuration). + * + * The application can write to this bit, any time it + * wants to reset the core. This is a self clearing + * bit and the core clears this bit after all the + * necessary logic is reset in the core, which may + * take several clocks, depending on the current state + * of the core. + */ + unsigned csftrst : 1; + } b; +} grstctl_t; + +/** + * This union represents the bit fields of the Core Interrupt Mask + * Register (GINTMSK). Set/clear the bits using the bit fields then + * write the <i>d32</i> value to the register. + */ +typedef union gintmsk_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct + { + unsigned wkupintr : 1; + unsigned sessreqintr : 1; + unsigned disconnect : 1; + unsigned conidstschng : 1; + unsigned reserved27 : 1; + unsigned ptxfempty : 1; + unsigned hcintr : 1; + unsigned portintr : 1; + unsigned reserved22_23 : 2; + unsigned incomplisoout : 1; + unsigned incomplisoin : 1; + unsigned outepintr : 1; + unsigned inepintr : 1; + unsigned epmismatch : 1; + unsigned reserved16 : 1; + unsigned eopframe : 1; + unsigned isooutdrop : 1; + unsigned enumdone : 1; + unsigned usbreset : 1; + unsigned usbsuspend : 1; + unsigned erlysuspend : 1; + unsigned i2cintr : 1; + unsigned reserved08 : 1; + unsigned goutnakeff : 1; + unsigned ginnakeff : 1; + unsigned nptxfempty : 1; + unsigned rxstsqlvl : 1; + unsigned sofintr : 1; + unsigned otgintr : 1; + unsigned modemismatch : 1; + unsigned reserved00 : 1; + } b; +} gintmsk_data_t; +/** + * This union represents the bit fields of the Core Interrupt Register + * (GINTSTS). Set/clear the bits using the bit fields then write the + * <i>d32</i> value to the register. + */ +typedef union gintsts_data //* +{ + /** raw register data */ + uint32_t d32; +#define DWC_SOF_INTR_MASK 0x0008 + /** register bits */ + struct + { +#define DWC_HOST_MODE 1 + unsigned wkupintr : 1; + unsigned sessreqintr : 1; + unsigned disconnect : 1; + unsigned conidstschng : 1; + unsigned reserved27 : 1; + unsigned ptxfempty : 1; + unsigned hcintr : 1; + unsigned portintr : 1; + unsigned reserved22_23 : 2; + unsigned incomplisoout : 1; + unsigned incomplisoin : 1; + unsigned outepintr : 1; + unsigned inepint: 1; + unsigned epmismatch : 1; + unsigned intokenrx : 1; + unsigned eopframe : 1; + unsigned isooutdrop : 1; + unsigned enumdone : 1; + unsigned usbreset : 1; + unsigned usbsuspend : 1; + unsigned erlysuspend : 1; + unsigned i2cintr : 1; + unsigned reserved8 : 1; + unsigned goutnakeff : 1; + unsigned ginnakeff : 1; + unsigned nptxfempty : 1; + unsigned rxstsqlvl : 1; + unsigned sofintr : 1; + unsigned otgintr : 1; + unsigned modemismatch : 1; + unsigned curmode : 1; + } b; +} gintsts_data_t; + + +/** + * This union represents the bit fields in the Device Receive Status Read and + * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i> + * element then read out the bits using the <i>b</i>it elements. + */ +typedef union device_grxsts_data { //* + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved : 7; + unsigned fn : 4; + unsigned pktsts : 4; +#define DWC_STS_DATA_UPDT 0x2 // OUT Data Packet +#define DWC_STS_XFER_COMP 0x3 // OUT Data Transfer Complete + +#define DWC_DSTS_GOUT_NAK 0x1 // Global OUT NAK +#define DWC_DSTS_SETUP_COMP 0x4 // Setup Phase Complete +#define DWC_DSTS_SETUP_UPDT 0x6 // SETUP Packet + + unsigned dpid : 2; + unsigned bcnt : 11; + unsigned epnum : 4; + } b; +} device_grxsts_data_t; + +/** + * This union represents the bit fields in the Host Receive Status Read and + * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i> + * element then read out the bits using the <i>b</i>it elements. + */ +typedef union host_grxsts_data { //* + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved31_21 : 11; + unsigned pktsts : 4; +#define DWC_GRXSTS_PKTSTS_IN 0x2 +#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP 0x3 +#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5 +#define DWC_GRXSTS_PKTSTS_CH_HALTED 0x7 + + unsigned dpid : 2; + unsigned bcnt : 11; + unsigned chnum : 4; + } b; +} host_grxsts_data_t; + +/** + * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ, + * GNPTXFSIZ, DPTXFSIZn). Read the register into the <i>d32</i> element then + * read out the bits using the <i>b</i>it elements. + */ +typedef union fifosize_data { //* + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned depth : 16; + unsigned startaddr : 16; + } b; +} fifosize_data_t; + +/** + * This union represents the bit fields in the Non-Periodic Transmit + * FIFO/Queue Status Register (GNPTXSTS). Read the register into the + * <i>d32</i> element then read out the bits using the <i>b</i>it + * elements. + */ +typedef union gnptxsts_data { //* + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved : 1; + /** Top of the Non-Periodic Transmit Request Queue + * - bits 30:27 - Channel/EP Number + * - bits 26:25 - Token Type + * - 2'b00 - IN/OUT + * - 2'b01 - Zero Length OUT + * - 2'b10 - PING/Complete Split + * - 2'b11 - Channel Halt + * - bit 24 - Terminate (Last entry for the selected + * channel/EP) + */ + unsigned nptxqtop_chnep : 4; + unsigned nptxqtop_token : 2; + unsigned nptxqtop_terminate : 1; + unsigned nptxqspcavail : 8; + unsigned nptxfspcavail : 16; + } b; +} gnptxsts_data_t; + +/** + * This union represents the bit fields in the Transmit + * FIFO Status Register (DTXFSTS). Read the register into the + * <i>d32</i> element then read out the bits using the <i>b</i>it + * elements. + */ +typedef union dtxfsts_data /* fscz */ //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved : 16; + unsigned txfspcavail : 16; + } b; +} dtxfsts_data_t; + + +/** + * This union represents the bit fields in the I2C Control Register + * (I2CCTL). Read the register into the <i>d32</i> element then read out the + * bits using the <i>b</i>it elements. + */ +typedef union gi2cctl_data { //* + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned bsydne : 1; + unsigned rw : 1; + unsigned reserved : 2; + unsigned i2cdevaddr : 2; + unsigned i2csuspctl : 1; + unsigned ack : 1; + unsigned i2cen : 1; + unsigned addr : 7; + unsigned regaddr : 8; + unsigned rwdata : 8; + } b; +} gi2cctl_data_t; + +/** + * This union represents the bit fields in the User HW Config1 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg1_data { //* + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned ep_dir15 : 2; + unsigned ep_dir14 : 2; + unsigned ep_dir13 : 2; + unsigned ep_dir12 : 2; + unsigned ep_dir11 : 2; + unsigned ep_dir10 : 2; + unsigned ep_dir9 : 2; + unsigned ep_dir8 : 2; + unsigned ep_dir7 : 2; + unsigned ep_dir6 : 2; + unsigned ep_dir5 : 2; + unsigned ep_dir4 : 2; + unsigned ep_dir3 : 2; + unsigned ep_dir2 : 2; + unsigned ep_dir1 : 2; + unsigned ep_dir0 : 2; + } b; +} hwcfg1_data_t; + +/** + * This union represents the bit fields in the User HW Config2 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg2_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /* GHWCFG2 */ + unsigned reserved31 : 1; + unsigned dev_token_q_depth : 5; + unsigned host_perio_tx_q_depth : 2; + unsigned nonperio_tx_q_depth : 2; + unsigned rx_status_q_depth : 2; + unsigned dynamic_fifo : 1; + unsigned perio_ep_supported : 1; + unsigned num_host_chan : 4; + unsigned num_dev_ep : 4; + unsigned fs_phy_type : 2; + unsigned hs_phy_type : 2; +#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0 +#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1 +#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2 +#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3 + + unsigned point2point : 1; + unsigned architecture : 2; + unsigned op_mode : 3; +#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0 +#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1 +#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2 +#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3 +#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4 +#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5 +#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6 + } b; +} hwcfg2_data_t; + +/** + * This union represents the bit fields in the User HW Config3 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg3_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /* GHWCFG3 */ + unsigned dfifo_depth : 16; + unsigned reserved15_13 : 3; + unsigned ahb_phy_clock_synch : 1; + unsigned synch_reset_type : 1; + unsigned optional_features : 1; + unsigned vendor_ctrl_if : 1; + unsigned i2c : 1; + unsigned otg_func : 1; + unsigned packet_size_cntr_width : 3; + unsigned xfer_size_cntr_width : 4; + } b; +} hwcfg3_data_t; + +/** + * This union represents the bit fields in the User HW Config4 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg4_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + + unsigned reserved31_30 : 2; /* fscz */ + unsigned num_in_eps : 4; + unsigned ded_fifo_en : 1; + + unsigned session_end_filt_en : 1; + unsigned b_valid_filt_en : 1; + unsigned a_valid_filt_en : 1; + unsigned vbus_valid_filt_en : 1; + unsigned iddig_filt_en : 1; + unsigned num_dev_mode_ctrl_ep : 4; + unsigned utmi_phy_data_width : 2; + unsigned min_ahb_freq : 9; + unsigned power_optimiz : 1; + unsigned num_dev_perio_in_ep : 4; + } b; +} hwcfg4_data_t; + + +//////////////////////////////////////////// +// Device Registers +/** + * Device Global Registers. <i>Offsets 800h-BFFh</i> + * + * The following structures define the size and relative field offsets + * for the Device Mode Registers. + * + * <i>These registers are visible only in Device mode and must not be + * accessed in Host mode, as the results are unknown.</i> + */ +typedef struct dwc_otg_dev_global_regs +{ + /** Device Configuration Register. <i>Offset 800h</i> */ + volatile uint32_t dcfg; + /** Device Control Register. <i>Offset: 804h</i> */ + volatile uint32_t dctl; + /** Device Status Register (Read Only). <i>Offset: 808h</i> */ + volatile uint32_t dsts; + /** Reserved. <i>Offset: 80Ch</i> */ + uint32_t unused; + /** Device IN Endpoint Common Interrupt Mask + * Register. <i>Offset: 810h</i> */ + volatile uint32_t diepmsk; + /** Device OUT Endpoint Common Interrupt Mask + * Register. <i>Offset: 814h</i> */ + volatile uint32_t doepmsk; + /** Device All Endpoints Interrupt Register. <i>Offset: 818h</i> */ + volatile uint32_t daint; + /** Device All Endpoints Interrupt Mask Register. <i>Offset: + * 81Ch</i> */ + volatile uint32_t daintmsk; + /** Device IN Token Queue Read Register-1 (Read Only). + * <i>Offset: 820h</i> */ + volatile uint32_t dtknqr1; + /** Device IN Token Queue Read Register-2 (Read Only). + * <i>Offset: 824h</i> */ + volatile uint32_t dtknqr2; + /** Device VBUS discharge Register. <i>Offset: 828h</i> */ + volatile uint32_t dvbusdis; + /** Device VBUS Pulse Register. <i>Offset: 82Ch</i> */ + volatile uint32_t dvbuspulse; + /** Device IN Token Queue Read Register-3 (Read Only). + * <i>Offset: 830h</i> */ + /*fscz*/ + /** Device IN Token Queue Read Register-3 (Read Only). / + * Device Thresholding control register (Read/Write) + * <i>Offset: 830h</i> */ + volatile uint32_t dtknqr3_dthrctl; + /** Device IN Token Queue Read Register-4 (Read Only). / + * Device IN EPs empty Inr. Mask Register (Read/Write) + * <i>Offset: 834h</i> */ + volatile uint32_t dtknqr4_fifoemptymsk; +} dwc_otg_device_global_regs_t; + +/** + * This union represents the bit fields in the Device Configuration + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. Write the + * <i>d32</i> member to the dcfg register. + */ +typedef union dcfg_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved0_8 : 9; /*fsczzzz correct*/ + unsigned epmscnt : 5; + /** In Endpoint Mis-match count */ + unsigned reserved17_13 : 5; + /** Periodic Frame Interval */ + unsigned perfrint : 2; +#define DWC_DCFG_FRAME_INTERVAL_80 0 +#define DWC_DCFG_FRAME_INTERVAL_85 1 +#define DWC_DCFG_FRAME_INTERVAL_90 2 +#define DWC_DCFG_FRAME_INTERVAL_95 3 + + /** Device Addresses */ + unsigned devaddr : 7; + unsigned reserved3 : 1; + /** Non Zero Length Status OUT Handshake */ + unsigned nzstsouthshk : 1; +#define DWC_DCFG_SEND_STALL 1 + + /** Device Speed */ + unsigned devspd : 2; + } b; +} dcfg_data_t; + +/** + * This union represents the bit fields in the Device Control + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union dctl_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved31_12 : 21; + /** Clear Global OUT NAK */ + unsigned cgoutnak : 1; + /** Set Global OUT NAK */ + unsigned sgoutnak : 1; + /** Clear Global Non-Periodic IN NAK */ + unsigned cgnpinnak : 1; + /** Set Global Non-Periodic IN NAK */ + unsigned sgnpinnak : 1; + /** Test Control */ + unsigned tstctl : 3; + /** Global OUT NAK Status */ + unsigned goutnaksts : 1; + /** Global Non-Periodic IN NAK Status */ + unsigned gnpinnaksts : 1; + /** Soft Disconnect */ + unsigned sftdiscon : 1; + /** Remote Wakeup */ + unsigned rmtwkupsig : 1; + } b; +} dctl_data_t; + +/** + * This union represents the bit fields in the Device Status + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union dsts_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved31_22 : 10; + /** Frame or Microframe Number of the received SOF */ + unsigned soffn : 14; + unsigned reserved07_04 : 4; + /** Erratic Error */ + unsigned errticerr : 1; + /** Enumerated Speed */ + unsigned enumspd : 2; +#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0 +#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1 +#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ 2 +#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ 3 + /** Suspend Status */ + unsigned suspsts : 1; + } b; +} dsts_data_t; + + +/** + * This union represents the bit fields in the Device IN EP Interrupt + * Register and the Device IN EP Common Mask Register. + * + * - Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union diepint_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved31_08 : 23; + unsigned txfifoundrn : 1; + /** IN Endpoint HAK Effective mask */ + unsigned emptyintr : 1; + /** IN Endpoint NAK Effective mask */ + unsigned inepnakeff : 1; + /** IN Token Received with EP mismatch mask */ + unsigned intknepmis : 1; + /** IN Token received with TxF Empty mask */ + unsigned intktxfemp : 1; + /** TimeOUT Handshake mask (non-ISOC EPs) */ + unsigned timeout : 1; + /** AHB Error mask */ + unsigned ahberr : 1; + /** Endpoint disable mask */ + unsigned epdisabled : 1; + /** Transfer complete mask */ + unsigned xfercompl : 1; + } b; +} diepint_data_t; +/** + * This union represents the bit fields in the Device IN EP Common + * Interrupt Mask Register. + */ +typedef union diepint_data diepmsk_data_t; //*-* + +/** + * This union represents the bit fields in the Device OUT EP + * Interrupt Register and Device OUT EP Common Interrupt Mask + * Register. + * + * - Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union doepint_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved31_04 : 28; // Docs say reserved is 27 bits + + // There is 1 bit missing here, not used? + + /** Setup Phase Done (control EPs) */ + unsigned setup : 1; + /** AHB Error */ + unsigned ahberr : 1; + /** Endpoint disable */ + unsigned epdisabled : 1; + /** Transfer complete */ + unsigned xfercompl : 1; + } b; +} doepint_data_t; +/** + * This union represents the bit fields in the Device OUT EP Common + * Interrupt Mask Register. + */ +typedef union doepint_data doepmsk_data_t; //*-* + + +/** + * This union represents the bit fields in the Device All EP Interrupt + * and Mask Registers. + * - Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union daint_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** OUT Endpoint bits */ + unsigned out : 16; + /** IN Endpoint bits */ + unsigned in : 16; + } ep; + struct { + /** OUT Endpoint bits */ + unsigned outep15 : 1; + unsigned outep14 : 1; + unsigned outep13 : 1; + unsigned outep12 : 1; + unsigned outep11 : 1; + unsigned outep10 : 1; + unsigned outep9 : 1; + unsigned outep8 : 1; + unsigned outep7 : 1; + unsigned outep6 : 1; + unsigned outep5 : 1; + unsigned outep4 : 1; + unsigned outep3 : 1; + unsigned outep2 : 1; + unsigned outep1 : 1; + unsigned outep0 : 1; + /** IN Endpoint bits */ + unsigned inep15 : 1; + unsigned inep14 : 1; + unsigned inep13 : 1; + unsigned inep12 : 1; + unsigned inep11 : 1; + unsigned inep10 : 1; + unsigned inep9 : 1; + unsigned inep8 : 1; + unsigned inep7 : 1; + unsigned inep6 : 1; + unsigned inep5 : 1; + unsigned inep4 : 1; + unsigned inep3 : 1; + unsigned inep2 : 1; + unsigned inep1 : 1; + unsigned inep0 : 1; + } b; +} daint_data_t; + +/** + * This union represents the bit fields in the Device IN Token Queue + * Read Registers. + * - Read the register into the <i>d32</i> member. + * - READ-ONLY Register + */ +typedef union dtknq1_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** EP Numbers of IN Tokens 0 ... 4 */ + unsigned epnums0_5 : 24; + /** write pointer has wrapped. */ + unsigned wrap_bit : 1; + /** Reserved */ + unsigned reserved05_06 : 2; + /** In Token Queue Write Pointer */ + unsigned intknwptr : 5; + }b; +} dtknq1_data_t; + +/** + * This union represents Threshold control Register + * - Read and write the register into the <i>d32</i> member. + * - READ-WRITABLE Register + */ +typedef union dthrctl_data //* /*fscz */ +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Reserved */ + unsigned reserved26_31 : 6; + /** Rx Thr. Length */ + unsigned rx_thr_len : 9; + /** Rx Thr. Enable */ + unsigned rx_thr_en : 1; + /** Reserved */ + unsigned reserved11_15 : 5; + /** Tx Thr. Length */ + unsigned tx_thr_len : 9; + /** ISO Tx Thr. Enable */ + unsigned iso_thr_en : 1; + /** non ISO Tx Thr. Enable */ + unsigned non_iso_thr_en : 1; + + }b; +} dthrctl_data_t; + + +/** + * Device Logical IN Endpoint-Specific Registers. <i>Offsets + * 900h-AFCh</i> + * + * There will be one set of endpoint registers per logical endpoint + * implemented. + * + * <i>These registers are visible only in Device mode and must not be + * accessed in Host mode, as the results are unknown.</i> + */ +typedef struct dwc_otg_dev_in_ep_regs +{ + /** Device IN Endpoint Control Register. <i>Offset:900h + + * (ep_num * 20h) + 00h</i> */ + volatile uint32_t diepctl; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */ + uint32_t reserved04; + /** Device IN Endpoint Interrupt Register. <i>Offset:900h + + * (ep_num * 20h) + 08h</i> */ + volatile uint32_t diepint; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */ + uint32_t reserved0C; + /** Device IN Endpoint Transfer Size + * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */ + volatile uint32_t dieptsiz; + /** Device IN Endpoint DMA Address Register. <i>Offset:900h + + * (ep_num * 20h) + 14h</i> */ + volatile uint32_t diepdma; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 18h - 900h + + * (ep_num * 20h) + 1Ch</i>*/ + volatile uint32_t dtxfsts; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 1Ch - 900h + + * (ep_num * 20h) + 1Ch</i>*/ + uint32_t reserved18; +} dwc_otg_dev_in_ep_regs_t; + +/** + * Device Logical OUT Endpoint-Specific Registers. <i>Offsets: + * B00h-CFCh</i> + * + * There will be one set of endpoint registers per logical endpoint + * implemented. + * + * <i>These registers are visible only in Device mode and must not be + * accessed in Host mode, as the results are unknown.</i> + */ +typedef struct dwc_otg_dev_out_ep_regs +{ + /** Device OUT Endpoint Control Register. <i>Offset:B00h + + * (ep_num * 20h) + 00h</i> */ + volatile uint32_t doepctl; + /** Device OUT Endpoint Frame number Register. <i>Offset: + * B00h + (ep_num * 20h) + 04h</i> */ + volatile uint32_t doepfn; + /** Device OUT Endpoint Interrupt Register. <i>Offset:B00h + + * (ep_num * 20h) + 08h</i> */ + volatile uint32_t doepint; + /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */ + uint32_t reserved0C; + /** Device OUT Endpoint Transfer Size Register. <i>Offset: + * B00h + (ep_num * 20h) + 10h</i> */ + volatile uint32_t doeptsiz; + /** Device OUT Endpoint DMA Address Register. <i>Offset:B00h + * + (ep_num * 20h) + 14h</i> */ + volatile uint32_t doepdma; + /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 18h - B00h + + * (ep_num * 20h) + 1Ch</i> */ + uint32_t unused[2]; +} dwc_otg_dev_out_ep_regs_t; + +/** + * This union represents the bit fields in the Device EP Control + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union depctl_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Endpoint Enable */ + unsigned epena : 1; + /** Endpoint Disable */ + unsigned epdis : 1; + + /** Set DATA1 PID (INTR/Bulk IN and OUT endpoints) + * Writing to this field sets the Endpoint DPID (DPID) + * field in this register to DATA1 Set Odd + * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints) + * Writing to this field sets the Even/Odd + * (micro)frame (EO_FrNum) field to odd (micro) frame. + */ + unsigned setd1pid : 1; + /** Set DATA0 PID (INTR/Bulk IN and OUT endpoints) + * Writing to this field sets the Endpoint DPID (DPID) + * field in this register to DATA0. Set Even + * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints) + * Writing to this field sets the Even/Odd + * (micro)frame (EO_FrNum) field to even (micro) + * frame. + */ + unsigned setd0pid : 1; + + /** Set NAK */ + unsigned snak : 1; + /** Clear NAK */ + unsigned cnak : 1; + + /** Tx Fifo Number + * IN EPn/IN EP0 + * OUT EPn/OUT EP0 - reserved */ + unsigned txfnum : 4; + + /** Stall Handshake */ + unsigned stall : 1; + + /** Snoop Mode + * OUT EPn/OUT EP0 + * IN EPn/IN EP0 - reserved */ + unsigned snp : 1; + + /** Endpoint Type + * 2'b00: Control + * 2'b01: Isochronous + * 2'b10: Bulk + * 2'b11: Interrupt */ + unsigned eptype : 2; + + /** NAK Status */ + unsigned naksts : 1; + + /** Endpoint DPID (INTR/Bulk IN and OUT endpoints) + * This field contains the PID of the packet going to + * be received or transmitted on this endpoint. The + * application should program the PID of the first + * packet going to be received or transmitted on this + * endpoint , after the endpoint is + * activated. Application use the SetD1PID and + * SetD0PID fields of this register to program either + * D0 or D1 PID. + * + * The encoding for this field is + * - 0: D0 + * - 1: D1 + */ + unsigned dpid : 1; + + /** USB Active Endpoint */ + unsigned usbactep : 1; + + /** Next Endpoint + * IN EPn/IN EP0 + * OUT EPn/OUT EP0 - reserved */ + unsigned nextep : 4; + + /** Maximum Packet Size + * IN/OUT EPn + * IN/OUT EP0 - 2 bits + * 2'b00: 64 Bytes + * 2'b01: 32 + * 2'b10: 16 + * 2'b11: 8 */ + unsigned mps : 11; +#define DWC_DEP0CTL_MPS_64 0 +#define DWC_DEP0CTL_MPS_32 1 +#define DWC_DEP0CTL_MPS_16 2 +#define DWC_DEP0CTL_MPS_8 3 + } b; +} depctl_data_t; + +/** + * This union represents the bit fields in the Device EP Transfer + * Size Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union deptsiz_data //* +{ + /** raw register data */ + uint32_t d32; + + /* + * Added-sr: 2007-07-26 + * + * Correct ther register layout for the 405EZ Ultra + * USB device implementation. + */ +#ifdef CONFIG_405EZ + /** register bits */ + struct { + unsigned reserved : 1; + /** Multi Count - Periodic IN endpoints */ + unsigned mc : 2; + unsigned reserved1 : 5; + /** Packet Count */ + unsigned pktcnt : 5; + unsigned reserved2 : 8; + /** Transfer size */ + unsigned xfersize : 11; + } b; +#else + /** register bits */ + struct { + unsigned reserved : 1; + /** Multi Count - Periodic IN endpoints */ + unsigned mc : 2; + /** Packet Count */ + unsigned pktcnt : 10; + /** Transfer size */ + unsigned xfersize : 19; + } b; +#endif +} deptsiz_data_t; + +/** + * This union represents the bit fields in the Device EP 0 Transfer + * Size Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union deptsiz0_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved31 : 1; /*fsczzzz device*/ + /**Setup Packet Count (DOEPTSIZ0 Only) */ + unsigned supcnt : 2; + /** Reserved */ + unsigned reserved28_20 : 9; + /** Packet Count */ + unsigned pktcnt : 1; + /** Reserved */ + unsigned reserved18_7 : 12; + /** Transfer size */ + unsigned xfersize : 7; + } b; +} deptsiz0_data_t; + + +/** Maximum number of Periodic FIFOs */ +#define MAX_PERIO_FIFOS 15 +/** Maximum number of Periodic FIFOs */ +#define MAX_TX_FIFOS 15 + +/** Maximum number of Endpoints/HostChannels */ +#if defined(CONFIG_460EX) || defined(CONFIG_APM82181) +#define MAX_EPS_CHANNELS 12 +#else +#define MAX_EPS_CHANNELS 4 +#endif + +/** + * The dwc_otg_dev_if structure contains information needed to manage + * the DWC_otg controller acting in device mode. It represents the + * programming view of the device-specific aspects of the controller. + */ +typedef struct dwc_otg_dev_if { + /** Pointer to device Global registers. + * Device Global Registers starting at offset 800h + */ + dwc_otg_device_global_regs_t *dev_global_regs; +#define DWC_DEV_GLOBAL_REG_OFFSET 0x800 + + /** + * Device Logical IN Endpoint-Specific Registers 900h-AFCh + */ + dwc_otg_dev_in_ep_regs_t *in_ep_regs[MAX_EPS_CHANNELS]; /*fscz divide 2 */ +#define DWC_DEV_IN_EP_REG_OFFSET 0x900 +#define DWC_EP_REG_OFFSET 0x20 + + /** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */ + dwc_otg_dev_out_ep_regs_t *out_ep_regs[MAX_EPS_CHANNELS]; /*fscz divide 2 */ +#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00 + + /* Device configuration information*/ + uint8_t speed; /**< Device Speed 0: Unknown, 1: LS, 2:FS, 3: HS */ + /*fscz */ + uint8_t num_in_eps; /**< Number # of Tx EP range: 0-15 exept ep0 */ + uint8_t num_out_eps; /**< Number # of Rx EP range: 0-15 exept ep 0*/ + + + /** Size of periodic FIFOs (Bytes) */ + uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS]; + + /*fscz */ + /** Size of Tx FIFOs (Bytes) */ + uint16_t tx_fifo_size[MAX_TX_FIFOS]; + + /** Thresholding enable flags and length varaiables **/ + uint16_t rx_thr_en; + uint16_t iso_tx_thr_en; + uint16_t non_iso_tx_thr_en; + + uint16_t rx_thr_length; + uint16_t tx_thr_length; +} dwc_otg_dev_if_t; + +/** + * This union represents the bit fields in the Power and Clock Gating Control + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union pcgcctl_data /*fsczzzz */ +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned reserved31_05 : 27; + /** PHY Suspended */ + unsigned physuspended : 1; + /** Reset Power Down Modules */ + unsigned rstpdwnmodule : 1; + /** Power Clamp */ + unsigned pwrclmp : 1; + /** Gate Hclk */ + unsigned gatehclk : 1; + /** Stop Pclk */ + unsigned stoppclk : 1; + } b; +} pcgcctl_data_t; + +///////////////////////////////////////////////// +// Host Mode Register Structures +// +/** + * The Host Global Registers structure defines the size and relative + * field offsets for the Host Mode Global Registers. Host Global + * Registers offsets 400h-7FFh. +*/ +typedef struct dwc_otg_host_global_regs +{ + /** Host Configuration Register. <i>Offset: 400h</i> */ + volatile uint32_t hcfg; + /** Host Frame Interval Register. <i>Offset: 404h</i> */ + volatile uint32_t hfir; + /** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */ + volatile uint32_t hfnum; + /** Reserved. <i>Offset: 40Ch</i> */ + uint32_t reserved40C; + /** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */ + volatile uint32_t hptxsts; + /** Host All Channels Interrupt Register. <i>Offset: 414h</i> */ + volatile uint32_t haint; + /** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */ + volatile uint32_t haintmsk; +} dwc_otg_host_global_regs_t; + +/** + * This union represents the bit fields in the Host Configuration Register. + * Read the register into the <i>d32</i> member then set/clear the bits using + * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register. + */ +typedef union hcfg_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + +#define DWC_HCFG_30_60_MHZ 0 +#define DWC_HCFG_48_MHZ 1 +#define DWC_HCFG_6_MHZ 2 + /** FS/LS Only Support */ + unsigned fslssupp : 1; + /** FS/LS Phy Clock Select */ + unsigned fslspclksel : 2; + } b; +} hcfg_data_t; + +/** + * This union represents the bit fields in the Host Frame Remaing/Number + * Register. + */ +typedef union hfir_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned reserved : 16; + unsigned frint : 16; + } b; +} hfir_data_t; + +/** + * This union represents the bit fields in the Host Frame Remaing/Number + * Register. + */ +typedef union hfnum_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { +#define DWC_HFNUM_MAX_FRNUM 0x3FFF + unsigned frrem : 16; + unsigned frnum : 16; + } b; +} hfnum_data_t; + +typedef union hptxsts_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned ptxqtop_odd : 1; + unsigned ptxqtop_chnum : 4; + unsigned ptxqtop_token : 2; + unsigned ptxqtop_terminate : 1; + unsigned ptxqspcavail : 8; + unsigned ptxfspcavail : 16; + /** Top of the Periodic Transmit Request Queue + * - bit 24 - Terminate (last entry for the selected channel) + * - bits 26:25 - Token Type + * - 2'b00 - Zero length + * - 2'b01 - Ping + * - 2'b10 - Disable + * - bits 30:27 - Channel Number + * - bit 31 - Odd/even microframe + */ + } b; +} hptxsts_data_t; + +/** + * This union represents the bit fields in the Host Port Control and Status + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hprt0 register. + */ +typedef union hprt0_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + +#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0 +#define DWC_HPRT0_PRTSPD_FULL_SPEED 1 +#define DWC_HPRT0_PRTSPD_LOW_SPEED 2 + unsigned reserved19_31 : 13; + unsigned prtspd : 2; + unsigned prttstctl : 4; + unsigned prtpwr : 1; + unsigned prtlnsts : 2; + unsigned reserved9 : 1; + unsigned prtrst : 1; + unsigned prtsusp : 1; + unsigned prtres : 1; + unsigned prtovrcurrchng : 1; + unsigned prtovrcurract : 1; + unsigned prtenchng : 1; + unsigned prtena : 1; + unsigned prtconndet : 1; + unsigned prtconnsts : 1; + } b; +} hprt0_data_t; + +/** + * This union represents the bit fields in the Host All Interrupt + * Register. + */ +typedef union haint_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved : 16; + unsigned ch15 : 1; + unsigned ch14 : 1; + unsigned ch13 : 1; + unsigned ch12 : 1; + unsigned ch11 : 1; + unsigned ch10 : 1; + unsigned ch9 : 1; + unsigned ch8 : 1; + unsigned ch7 : 1; + unsigned ch6 : 1; + unsigned ch5 : 1; + unsigned ch4 : 1; + unsigned ch3 : 1; + unsigned ch2 : 1; + unsigned ch1 : 1; + unsigned ch0 : 1; + } b; + struct { + unsigned reserved : 16; + unsigned chint : 16; + } b2; +} haint_data_t; + +/** + * This union represents the bit fields in the Host All Interrupt + * Register. + */ +typedef union haintmsk_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved : 16; + unsigned ch15 : 1; + unsigned ch14 : 1; + unsigned ch13 : 1; + unsigned ch12 : 1; + unsigned ch11 : 1; + unsigned ch10 : 1; + unsigned ch9 : 1; + unsigned ch8 : 1; + unsigned ch7 : 1; + unsigned ch6 : 1; + unsigned ch5 : 1; + unsigned ch4 : 1; + unsigned ch3 : 1; + unsigned ch2 : 1; + unsigned ch1 : 1; + unsigned ch0 : 1; + } b; + struct { + unsigned reserved : 16; + unsigned chint : 16; + } b2; +} haintmsk_data_t; + +/** + * Host Channel Specific Registers. <i>500h-5FCh</i> + */ +typedef struct dwc_otg_hc_regs +{ + /** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */ + volatile uint32_t hcchar; + /** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */ + volatile uint32_t hcsplt; + /** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */ + volatile uint32_t hcint; + /** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */ + volatile uint32_t hcintmsk; + /** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */ + volatile uint32_t hctsiz; + /** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */ + volatile uint32_t hcdma; + /** Reserved. <i>Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch</i> */ + uint32_t reserved[2]; +} dwc_otg_hc_regs_t; + +/** + * This union represents the bit fields in the Host Channel Characteristics + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hcchar register. + */ +typedef union hcchar_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** Channel enable */ + unsigned chen : 1; + + /** Channel disable */ + unsigned chdis : 1; + + /** + * Frame to transmit periodic transaction. + * 0: even, 1: odd + */ + unsigned oddfrm : 1; + + /** Device address */ + unsigned devaddr : 7; + + /** Packets per frame for periodic transfers. 0 is reserved. */ + unsigned multicnt : 2; + + /** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */ + unsigned eptype : 2; + + /** 0: Full/high speed device, 1: Low speed device */ + unsigned lspddev : 1; + + unsigned reserved : 1; + + /** 0: OUT, 1: IN */ + unsigned epdir : 1; + + /** Endpoint number */ + unsigned epnum : 4; + + /** Maximum packet size in bytes */ + unsigned mps : 11; + } b; +} hcchar_data_t; + +typedef union hcsplt_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** Split Enble */ + unsigned spltena : 1; + + /** Reserved */ + unsigned reserved : 14; + + /** Do Complete Split */ + unsigned compsplt : 1; + + + /** Transaction Position */ + unsigned xactpos : 2; +#define DWC_HCSPLIT_XACTPOS_MID 0 +#define DWC_HCSPLIT_XACTPOS_END 1 +#define DWC_HCSPLIT_XACTPOS_BEGIN 2 +#define DWC_HCSPLIT_XACTPOS_ALL 3 + + /** Hub Address */ + unsigned hubaddr : 7; + + /** Port Address */ + unsigned prtaddr : 7; + + } b; +} hcsplt_data_t; + + +/** + * This union represents the bit fields in the Host All Interrupt + * Register. + */ +typedef union hcint_data //* +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Reserved */ + unsigned reserved : 21; + /** Data Toggle Error */ + unsigned datatglerr : 1; + /** Frame Overrun */ + unsigned frmovrun : 1; + /** Babble Error */ + unsigned bblerr : 1; + /** Transaction Err */ + unsigned xacterr : 1; + /** NYET Response Received */ + unsigned nyet : 1; + /** ACK Response Received */ + unsigned ack : 1; + /** NAK Response Received */ + unsigned nak : 1; + /** STALL Response Received */ + unsigned stall : 1; + /** AHB Error */ + unsigned ahberr : 1; + /** Channel Halted */ + unsigned chhltd : 1; + /** Transfer Complete */ + unsigned xfercomp : 1; + } b; +} hcint_data_t; + +/** + * This union represents the bit fields in the Host Channel Transfer Size + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hcchar register. + */ +typedef union hctsiz_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { +#define DWC_HCTSIZ_DATA0 0 +#define DWC_HCTSIZ_DATA1 2 +#define DWC_HCTSIZ_DATA2 1 +#define DWC_HCTSIZ_MDATA 3 +#define DWC_HCTSIZ_SETUP 3 + + /** Do PING protocol when 1 */ + unsigned dopng : 1; + + /** + * Packet ID for next data packet + * 0: DATA0 + * 1: DATA2 + * 2: DATA1 + * 3: MDATA (non-Control), SETUP (Control) + */ + unsigned pid : 2; + + /** Data packets to transfer */ + unsigned pktcnt : 10; + + /** Total transfer size in bytes */ + unsigned xfersize : 19; + } b; +} hctsiz_data_t; + +/** + * This union represents the bit fields in the Host Channel Interrupt Mask + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hcintmsk register. + */ +typedef union hcintmsk_data //* +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned reserved : 21; + unsigned datatglerr : 1; + unsigned frmovrun : 1; + unsigned bblerr : 1; + unsigned xacterr : 1; + unsigned nyet : 1; + unsigned ack : 1; + unsigned nak : 1; + unsigned stall : 1; + unsigned ahberr : 1; + unsigned chhltd : 1; + unsigned xfercompl : 1; + } b; +} hcintmsk_data_t; + +/** OTG Host Interface Structure. + * + * The OTG Host Interface Structure structure contains information + * needed to manage the DWC_otg controller acting in host mode. It + * represents the programming view of the host-specific aspects of the + * controller. + */ +typedef struct dwc_otg_host_if { + /** Host Global Registers starting at offset 400h.*/ + dwc_otg_host_global_regs_t *host_global_regs; +#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400 + + /** Host Port 0 Control and Status Register */ + volatile uint32_t *hprt0; +#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440 + + + /** Host Channel Specific Registers at offsets 500h-5FCh. */ + dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS]; +#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500 +#define DWC_OTG_CHAN_REGS_OFFSET 0x20 + + + /* Host configuration information */ + /** Number of Host Channels (range: 1-16) */ + uint8_t num_host_channels; + /** Periodic EPs supported (0: no, 1: yes) */ + uint8_t perio_eps_supported; + /** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */ + uint16_t perio_tx_fifo_size; + +} dwc_otg_host_if_t; + + +#else /* CONFIG_4xx not defined */ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +/** + * This union represents the bit fields of the Core OTG Control + * and Status Register (GOTGCTL). Set the bits using the bit + * fields then write the <i>d32</i> value to the register. + */ +typedef union gotgctl_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned sesreqscs : 1; + unsigned sesreq : 1; + unsigned reserved2_7 : 6; + unsigned hstnegscs : 1; + unsigned hnpreq : 1; + unsigned hstsethnpen : 1; + unsigned devhnpen : 1; + unsigned reserved12_15 : 4; + unsigned conidsts : 1; + unsigned reserved17 : 1; + unsigned asesvld : 1; + unsigned bsesvld : 1; + unsigned currmod : 1; + unsigned reserved21_31 : 11; + } b; +} gotgctl_data_t; + +/** + * This union represents the bit fields of the Core OTG Interrupt Register + * (GOTGINT). Set/clear the bits using the bit fields then write the <i>d32</i> + * value to the register. + */ +typedef union gotgint_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Current Mode */ + unsigned reserved0_1 : 2; + + /** Session End Detected */ + unsigned sesenddet : 1; + + unsigned reserved3_7 : 5; + + /** Session Request Success Status Change */ + unsigned sesreqsucstschng : 1; + /** Host Negotiation Success Status Change */ + unsigned hstnegsucstschng : 1; + + unsigned reserver10_16 : 7; + + /** Host Negotiation Detected */ + unsigned hstnegdet : 1; + /** A-Device Timeout Change */ + unsigned adevtoutchng : 1; + /** Debounce Done */ + unsigned debdone : 1; + + unsigned reserved31_20 : 12; + + } b; +} gotgint_data_t; + + +/** + * This union represents the bit fields of the Core AHB Configuration + * Register (GAHBCFG). Set/clear the bits using the bit fields then + * write the <i>d32</i> value to the register. + */ +typedef union gahbcfg_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned glblintrmsk : 1; +#define DWC_GAHBCFG_GLBINT_ENABLE 1 + + unsigned hburstlen : 4; +#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE 0 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR 1 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR4 3 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR8 5 +#define DWC_GAHBCFG_INT_DMA_BURST_INCR16 7 + + unsigned dmaenable : 1; +#define DWC_GAHBCFG_DMAENABLE 1 + unsigned reserved : 1; + unsigned nptxfemplvl_txfemplvl : 1; + unsigned ptxfemplvl : 1; +#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY 1 +#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY 0 + unsigned reserved9_31 : 23; + } b; +} gahbcfg_data_t; + +/** + * This union represents the bit fields of the Core USB Configuration + * Register (GUSBCFG). Set the bits using the bit fields then write + * the <i>d32</i> value to the register. + */ +typedef union gusbcfg_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned toutcal : 3; + unsigned phyif : 1; + unsigned ulpi_utmi_sel : 1; + unsigned fsintf : 1; + unsigned physel : 1; + unsigned ddrsel : 1; + unsigned srpcap : 1; + unsigned hnpcap : 1; + unsigned usbtrdtim : 4; + unsigned nptxfrwnden : 1; + unsigned phylpwrclksel : 1; + unsigned otgutmifssel : 1; + unsigned ulpi_fsls : 1; + unsigned ulpi_auto_res : 1; + unsigned ulpi_clk_sus_m : 1; + unsigned ulpi_ext_vbus_drv : 1; + unsigned ulpi_int_vbus_indicator : 1; + unsigned term_sel_dl_pulse : 1; + unsigned reserved23_28 : 6; + unsigned force_host_mode: 1; + unsigned force_device_mode: 1; + unsigned corrupt_tx_packet: 1; + } b; +} gusbcfg_data_t; + +/** + * This union represents the bit fields of the Core Reset Register + * (GRSTCTL). Set/clear the bits using the bit fields then write the + * <i>d32</i> value to the register. + */ +typedef union grstctl_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Core Soft Reset (CSftRst) (Device and Host) + * + * The application can flush the control logic in the + * entire core using this bit. This bit resets the + * pipelines in the AHB Clock domain as well as the + * PHY Clock domain. + * + * The state machines are reset to an IDLE state, the + * control bits in the CSRs are cleared, all the + * transmit FIFOs and the receive FIFO are flushed. + * + * The status mask bits that control the generation of + * the interrupt, are cleared, to clear the + * interrupt. The interrupt status bits are not + * cleared, so the application can get the status of + * any events that occurred in the core after it has + * set this bit. + * + * Any transactions on the AHB are terminated as soon + * as possible following the protocol. Any + * transactions on the USB are terminated immediately. + * + * The configuration settings in the CSRs are + * unchanged, so the software doesn't have to + * reprogram these registers (Device + * Configuration/Host Configuration/Core System + * Configuration/Core PHY Configuration). + * + * The application can write to this bit, any time it + * wants to reset the core. This is a self clearing + * bit and the core clears this bit after all the + * necessary logic is reset in the core, which may + * take several clocks, depending on the current state + * of the core. + */ + unsigned csftrst : 1; + /** Hclk Soft Reset + * + * The application uses this bit to reset the control logic in + * the AHB clock domain. Only AHB clock domain pipelines are + * reset. + */ + unsigned hsftrst : 1; + /** Host Frame Counter Reset (Host Only)<br> + * + * The application can reset the (micro)frame number + * counter inside the core, using this bit. When the + * (micro)frame counter is reset, the subsequent SOF + * sent out by the core, will have a (micro)frame + * number of 0. + */ + unsigned hstfrm : 1; + /** In Token Sequence Learning Queue Flush + * (INTknQFlsh) (Device Only) + */ + unsigned intknqflsh : 1; + /** RxFIFO Flush (RxFFlsh) (Device and Host) + * + * The application can flush the entire Receive FIFO + * using this bit. <p>The application must first + * ensure that the core is not in the middle of a + * transaction. <p>The application should write into + * this bit, only after making sure that neither the + * DMA engine is reading from the RxFIFO nor the MAC + * is writing the data in to the FIFO. <p>The + * application should wait until the bit is cleared + * before performing any other operations. This bit + * will takes 8 clocks (slowest of PHY or AHB clock) + * to clear. + */ + unsigned rxfflsh : 1; + /** TxFIFO Flush (TxFFlsh) (Device and Host). + * + * This bit is used to selectively flush a single or + * all transmit FIFOs. The application must first + * ensure that the core is not in the middle of a + * transaction. <p>The application should write into + * this bit, only after making sure that neither the + * DMA engine is writing into the TxFIFO nor the MAC + * is reading the data out of the FIFO. <p>The + * application should wait until the core clears this + * bit, before performing any operations. This bit + * will takes 8 clocks (slowest of PHY or AHB clock) + * to clear. + */ + unsigned txfflsh : 1; + + /** TxFIFO Number (TxFNum) (Device and Host). + * + * This is the FIFO number which needs to be flushed, + * using the TxFIFO Flush bit. This field should not + * be changed until the TxFIFO Flush bit is cleared by + * the core. + * - 0x0 : Non Periodic TxFIFO Flush + * - 0x1 : Periodic TxFIFO #1 Flush in device mode + * or Periodic TxFIFO in host mode + * - 0x2 : Periodic TxFIFO #2 Flush in device mode. + * - ... + * - 0xF : Periodic TxFIFO #15 Flush in device mode + * - 0x10: Flush all the Transmit NonPeriodic and + * Transmit Periodic FIFOs in the core + */ + unsigned txfnum : 5; + /** Reserved */ + unsigned reserved11_29 : 19; + /** DMA Request Signal. Indicated DMA request is in + * probress. Used for debug purpose. */ + unsigned dmareq : 1; + /** AHB Master Idle. Indicates the AHB Master State + * Machine is in IDLE condition. */ + unsigned ahbidle : 1; + } b; +} grstctl_t; + + +/** + * This union represents the bit fields of the Core Interrupt Mask + * Register (GINTMSK). Set/clear the bits using the bit fields then + * write the <i>d32</i> value to the register. + */ +typedef union gintmsk_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned reserved0 : 1; + unsigned modemismatch : 1; + unsigned otgintr : 1; + unsigned sofintr : 1; + unsigned rxstsqlvl : 1; + unsigned nptxfempty : 1; + unsigned ginnakeff : 1; + unsigned goutnakeff : 1; + unsigned reserved8 : 1; + unsigned i2cintr : 1; + unsigned erlysuspend : 1; + unsigned usbsuspend : 1; + unsigned usbreset : 1; + unsigned enumdone : 1; + unsigned isooutdrop : 1; + unsigned eopframe : 1; + unsigned reserved16 : 1; + unsigned epmismatch : 1; + unsigned inepintr : 1; + unsigned outepintr : 1; + unsigned incomplisoin : 1; + unsigned incomplisoout : 1; + unsigned reserved22_23 : 2; + unsigned portintr : 1; + unsigned hcintr : 1; + unsigned ptxfempty : 1; + unsigned reserved27 : 1; + unsigned conidstschng : 1; + unsigned disconnect : 1; + unsigned sessreqintr : 1; + unsigned wkupintr : 1; + } b; +} gintmsk_data_t; +/** + * This union represents the bit fields of the Core Interrupt Register + * (GINTSTS). Set/clear the bits using the bit fields then write the + * <i>d32</i> value to the register. + */ +typedef union gintsts_data +{ + /** raw register data */ + uint32_t d32; +#define DWC_SOF_INTR_MASK 0x0008 + /** register bits */ + struct { +#define DWC_HOST_MODE 1 + unsigned curmode : 1; + unsigned modemismatch : 1; + unsigned otgintr : 1; + unsigned sofintr : 1; + unsigned rxstsqlvl : 1; + unsigned nptxfempty : 1; + unsigned ginnakeff : 1; + unsigned goutnakeff : 1; + unsigned reserved8 : 1; + unsigned i2cintr : 1; + unsigned erlysuspend : 1; + unsigned usbsuspend : 1; + unsigned usbreset : 1; + unsigned enumdone : 1; + unsigned isooutdrop : 1; + unsigned eopframe : 1; + unsigned intokenrx : 1; + unsigned epmismatch : 1; + unsigned inepint: 1; + unsigned outepintr : 1; + unsigned incomplisoin : 1; + unsigned incomplisoout : 1; + unsigned reserved22_23 : 2; + unsigned portintr : 1; + unsigned hcintr : 1; + unsigned ptxfempty : 1; + unsigned reserved27 : 1; + unsigned conidstschng : 1; + unsigned disconnect : 1; + unsigned sessreqintr : 1; + unsigned wkupintr : 1; + } b; +} gintsts_data_t; + + +/** + * This union represents the bit fields in the Device Receive Status Read and + * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i> + * element then read out the bits using the <i>b</i>it elements. + */ +typedef union device_grxsts_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned epnum : 4; + unsigned bcnt : 11; + unsigned dpid : 2; + +#define DWC_STS_DATA_UPDT 0x2 // OUT Data Packet +#define DWC_STS_XFER_COMP 0x3 // OUT Data Transfer Complete + +#define DWC_DSTS_GOUT_NAK 0x1 // Global OUT NAK +#define DWC_DSTS_SETUP_COMP 0x4 // Setup Phase Complete +#define DWC_DSTS_SETUP_UPDT 0x6 // SETUP Packet + unsigned pktsts : 4; + unsigned fn : 4; + unsigned reserved : 7; + } b; +} device_grxsts_data_t; + +/** + * This union represents the bit fields in the Host Receive Status Read and + * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i> + * element then read out the bits using the <i>b</i>it elements. + */ +typedef union host_grxsts_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned chnum : 4; + unsigned bcnt : 11; + unsigned dpid : 2; + + unsigned pktsts : 4; +#define DWC_GRXSTS_PKTSTS_IN 0x2 +#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP 0x3 +#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5 +#define DWC_GRXSTS_PKTSTS_CH_HALTED 0x7 + + unsigned reserved : 11; + } b; +} host_grxsts_data_t; + +/** + * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ, + * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the <i>d32</i> element then + * read out the bits using the <i>b</i>it elements. + */ +typedef union fifosize_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned startaddr : 16; + unsigned depth : 16; + } b; +} fifosize_data_t; + +/** + * This union represents the bit fields in the Non-Periodic Transmit + * FIFO/Queue Status Register (GNPTXSTS). Read the register into the + * <i>d32</i> element then read out the bits using the <i>b</i>it + * elements. + */ +typedef union gnptxsts_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned nptxfspcavail : 16; + unsigned nptxqspcavail : 8; + /** Top of the Non-Periodic Transmit Request Queue + * - bit 24 - Terminate (Last entry for the selected + * channel/EP) + * - bits 26:25 - Token Type + * - 2'b00 - IN/OUT + * - 2'b01 - Zero Length OUT + * - 2'b10 - PING/Complete Split + * - 2'b11 - Channel Halt + * - bits 30:27 - Channel/EP Number + */ + unsigned nptxqtop_terminate : 1; + unsigned nptxqtop_token : 2; + unsigned nptxqtop_chnep : 4; + unsigned reserved : 1; + } b; +} gnptxsts_data_t; + +/** + * This union represents the bit fields in the Transmit + * FIFO Status Register (DTXFSTS). Read the register into the + * <i>d32</i> element then read out the bits using the <i>b</i>it + * elements. + */ +typedef union dtxfsts_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned txfspcavail : 16; + unsigned reserved : 16; + } b; +} dtxfsts_data_t; + +/** + * This union represents the bit fields in the I2C Control Register + * (I2CCTL). Read the register into the <i>d32</i> element then read out the + * bits using the <i>b</i>it elements. + */ +typedef union gi2cctl_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned rwdata : 8; + unsigned regaddr : 8; + unsigned addr : 7; + unsigned i2cen : 1; + unsigned ack : 1; + unsigned i2csuspctl : 1; + unsigned i2cdevaddr : 2; + unsigned reserved : 2; + unsigned rw : 1; + unsigned bsydne : 1; + } b; +} gi2cctl_data_t; + +/** + * This union represents the bit fields in the User HW Config1 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg1_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned ep_dir0 : 2; + unsigned ep_dir1 : 2; + unsigned ep_dir2 : 2; + unsigned ep_dir3 : 2; + unsigned ep_dir4 : 2; + unsigned ep_dir5 : 2; + unsigned ep_dir6 : 2; + unsigned ep_dir7 : 2; + unsigned ep_dir8 : 2; + unsigned ep_dir9 : 2; + unsigned ep_dir10 : 2; + unsigned ep_dir11 : 2; + unsigned ep_dir12 : 2; + unsigned ep_dir13 : 2; + unsigned ep_dir14 : 2; + unsigned ep_dir15 : 2; + } b; +} hwcfg1_data_t; + +/** + * This union represents the bit fields in the User HW Config2 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg2_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /* GHWCFG2 */ + unsigned op_mode : 3; +#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0 +#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1 +#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2 +#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3 +#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4 +#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5 +#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6 + + unsigned architecture : 2; + unsigned point2point : 1; + unsigned hs_phy_type : 2; +#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0 +#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1 +#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2 +#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3 + + unsigned fs_phy_type : 2; + unsigned num_dev_ep : 4; + unsigned num_host_chan : 4; + unsigned perio_ep_supported : 1; + unsigned dynamic_fifo : 1; + unsigned rx_status_q_depth : 2; + unsigned nonperio_tx_q_depth : 2; + unsigned host_perio_tx_q_depth : 2; + unsigned dev_token_q_depth : 5; + unsigned reserved31 : 1; + } b; +} hwcfg2_data_t; + +/** + * This union represents the bit fields in the User HW Config3 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg3_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /* GHWCFG3 */ + unsigned xfer_size_cntr_width : 4; + unsigned packet_size_cntr_width : 3; + unsigned otg_func : 1; + unsigned i2c : 1; + unsigned vendor_ctrl_if : 1; + unsigned optional_features : 1; + unsigned synch_reset_type : 1; + unsigned reserved15_12 : 4; + unsigned dfifo_depth : 16; + } b; +} hwcfg3_data_t; + +/** + * This union represents the bit fields in the User HW Config4 + * Register. Read the register into the <i>d32</i> element then read + * out the bits using the <i>b</i>it elements. + */ +typedef union hwcfg4_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned num_dev_perio_in_ep : 4; + unsigned power_optimiz : 1; + unsigned min_ahb_freq : 9; + unsigned utmi_phy_data_width : 2; + unsigned num_dev_mode_ctrl_ep : 4; + unsigned iddig_filt_en : 1; + unsigned vbus_valid_filt_en : 1; + unsigned a_valid_filt_en : 1; + unsigned b_valid_filt_en : 1; + unsigned session_end_filt_en : 1; + unsigned ded_fifo_en : 1; + unsigned num_in_eps : 4; + unsigned reserved31_30 : 2; + } b; +} hwcfg4_data_t; + +//////////////////////////////////////////// +// Device Registers +/** + * Device Global Registers. <i>Offsets 800h-BFFh</i> + * + * The following structures define the size and relative field offsets + * for the Device Mode Registers. + * + * <i>These registers are visible only in Device mode and must not be + * accessed in Host mode, as the results are unknown.</i> + */ +typedef struct dwc_otg_dev_global_regs +{ + /** Device Configuration Register. <i>Offset 800h</i> */ + volatile uint32_t dcfg; + /** Device Control Register. <i>Offset: 804h</i> */ + volatile uint32_t dctl; + /** Device Status Register (Read Only). <i>Offset: 808h</i> */ + volatile uint32_t dsts; + /** Reserved. <i>Offset: 80Ch</i> */ + uint32_t unused; + /** Device IN Endpoint Common Interrupt Mask + * Register. <i>Offset: 810h</i> */ + volatile uint32_t diepmsk; + /** Device OUT Endpoint Common Interrupt Mask + * Register. <i>Offset: 814h</i> */ + volatile uint32_t doepmsk; + /** Device All Endpoints Interrupt Register. <i>Offset: 818h</i> */ + volatile uint32_t daint; + /** Device All Endpoints Interrupt Mask Register. <i>Offset: + * 81Ch</i> */ + volatile uint32_t daintmsk; + /** Device IN Token Queue Read Register-1 (Read Only). + * <i>Offset: 820h</i> */ + volatile uint32_t dtknqr1; + /** Device IN Token Queue Read Register-2 (Read Only). + * <i>Offset: 824h</i> */ + volatile uint32_t dtknqr2; + /** Device VBUS discharge Register. <i>Offset: 828h</i> */ + volatile uint32_t dvbusdis; + /** Device VBUS Pulse Register. <i>Offset: 82Ch</i> */ + volatile uint32_t dvbuspulse; + /** Device IN Token Queue Read Register-3 (Read Only). / + * Device Thresholding control register (Read/Write) + * <i>Offset: 830h</i> */ + volatile uint32_t dtknqr3_dthrctl; + /** Device IN Token Queue Read Register-4 (Read Only). / + * Device IN EPs empty Inr. Mask Register (Read/Write) + * <i>Offset: 834h</i> */ + volatile uint32_t dtknqr4_fifoemptymsk; +} dwc_otg_device_global_regs_t; + +/** + * This union represents the bit fields in the Device Configuration + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. Write the + * <i>d32</i> member to the dcfg register. + */ +typedef union dcfg_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Device Speed */ + unsigned devspd : 2; + /** Non Zero Length Status OUT Handshake */ + unsigned nzstsouthshk : 1; +#define DWC_DCFG_SEND_STALL 1 + + unsigned reserved3 : 1; + /** Device Addresses */ + unsigned devaddr : 7; + /** Periodic Frame Interval */ + unsigned perfrint : 2; +#define DWC_DCFG_FRAME_INTERVAL_80 0 +#define DWC_DCFG_FRAME_INTERVAL_85 1 +#define DWC_DCFG_FRAME_INTERVAL_90 2 +#define DWC_DCFG_FRAME_INTERVAL_95 3 + + unsigned reserved13_17 : 5; + /** In Endpoint Mis-match count */ + unsigned epmscnt : 4; + } b; +} dcfg_data_t; + +/** + * This union represents the bit fields in the Device Control + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union dctl_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Remote Wakeup */ + unsigned rmtwkupsig : 1; + /** Soft Disconnect */ + unsigned sftdiscon : 1; + /** Global Non-Periodic IN NAK Status */ + unsigned gnpinnaksts : 1; + /** Global OUT NAK Status */ + unsigned goutnaksts : 1; + /** Test Control */ + unsigned tstctl : 3; + /** Set Global Non-Periodic IN NAK */ + unsigned sgnpinnak : 1; + /** Clear Global Non-Periodic IN NAK */ + unsigned cgnpinnak : 1; + /** Set Global OUT NAK */ + unsigned sgoutnak : 1; + /** Clear Global OUT NAK */ + unsigned cgoutnak : 1; + + unsigned reserved : 21; + } b; +} dctl_data_t; + +/** + * This union represents the bit fields in the Device Status + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union dsts_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Suspend Status */ + unsigned suspsts : 1; + /** Enumerated Speed */ + unsigned enumspd : 2; +#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0 +#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1 +#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ 2 +#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ 3 + /** Erratic Error */ + unsigned errticerr : 1; + unsigned reserved4_7: 4; + /** Frame or Microframe Number of the received SOF */ + unsigned soffn : 14; + unsigned reserved22_31 : 10; + } b; +} dsts_data_t; + + +/** + * This union represents the bit fields in the Device IN EP Interrupt + * Register and the Device IN EP Common Mask Register. + * + * - Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union diepint_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Transfer complete mask */ + unsigned xfercompl : 1; + /** Endpoint disable mask */ + unsigned epdisabled : 1; + /** AHB Error mask */ + unsigned ahberr : 1; + /** TimeOUT Handshake mask (non-ISOC EPs) */ + unsigned timeout : 1; + /** IN Token received with TxF Empty mask */ + unsigned intktxfemp : 1; + /** IN Token Received with EP mismatch mask */ + unsigned intknepmis : 1; + /** IN Endpoint HAK Effective mask */ + unsigned inepnakeff : 1; + /** IN Endpoint HAK Effective mask */ + unsigned emptyintr : 1; + + unsigned txfifoundrn : 1; + + unsigned reserved08_31 : 23; + } b; +} diepint_data_t; +/** + * This union represents the bit fields in the Device IN EP Common + * Interrupt Mask Register. + */ +typedef union diepint_data diepmsk_data_t; + +/** + * This union represents the bit fields in the Device OUT EP Interrupt + * Registerand Device OUT EP Common Interrupt Mask Register. + * + * - Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union doepint_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Transfer complete */ + unsigned xfercompl : 1; + /** Endpoint disable */ + unsigned epdisabled : 1; + /** AHB Error */ + unsigned ahberr : 1; + /** Setup Phase Done (contorl EPs) */ + unsigned setup : 1; + unsigned reserved04_31 : 28; + } b; +} doepint_data_t; +/** + * This union represents the bit fields in the Device OUT EP Common + * Interrupt Mask Register. + */ +typedef union doepint_data doepmsk_data_t; + + +/** + * This union represents the bit fields in the Device All EP Interrupt + * and Mask Registers. + * - Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union daint_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** IN Endpoint bits */ + unsigned in : 16; + /** OUT Endpoint bits */ + unsigned out : 16; + } ep; + struct { + /** IN Endpoint bits */ + unsigned inep0 : 1; + unsigned inep1 : 1; + unsigned inep2 : 1; + unsigned inep3 : 1; + unsigned inep4 : 1; + unsigned inep5 : 1; + unsigned inep6 : 1; + unsigned inep7 : 1; + unsigned inep8 : 1; + unsigned inep9 : 1; + unsigned inep10 : 1; + unsigned inep11 : 1; + unsigned inep12 : 1; + unsigned inep13 : 1; + unsigned inep14 : 1; + unsigned inep15 : 1; + /** OUT Endpoint bits */ + unsigned outep0 : 1; + unsigned outep1 : 1; + unsigned outep2 : 1; + unsigned outep3 : 1; + unsigned outep4 : 1; + unsigned outep5 : 1; + unsigned outep6 : 1; + unsigned outep7 : 1; + unsigned outep8 : 1; + unsigned outep9 : 1; + unsigned outep10 : 1; + unsigned outep11 : 1; + unsigned outep12 : 1; + unsigned outep13 : 1; + unsigned outep14 : 1; + unsigned outep15 : 1; + } b; +} daint_data_t; + +/** + * This union represents the bit fields in the Device IN Token Queue + * Read Registers. + * - Read the register into the <i>d32</i> member. + * - READ-ONLY Register + */ +typedef union dtknq1_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** In Token Queue Write Pointer */ + unsigned intknwptr : 5; + /** Reserved */ + unsigned reserved05_06 : 2; + /** write pointer has wrapped. */ + unsigned wrap_bit : 1; + /** EP Numbers of IN Tokens 0 ... 4 */ + unsigned epnums0_5 : 24; + }b; +} dtknq1_data_t; + +/** + * This union represents Threshold control Register + * - Read and write the register into the <i>d32</i> member. + * - READ-WRITABLE Register + */ +typedef union dthrctl_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** non ISO Tx Thr. Enable */ + unsigned non_iso_thr_en : 1; + /** ISO Tx Thr. Enable */ + unsigned iso_thr_en : 1; + /** Tx Thr. Length */ + unsigned tx_thr_len : 9; + /** Reserved */ + unsigned reserved11_15 : 5; + /** Rx Thr. Enable */ + unsigned rx_thr_en : 1; + /** Rx Thr. Length */ + unsigned rx_thr_len : 9; + /** Reserved */ + unsigned reserved26_31 : 6; + }b; +} dthrctl_data_t; + + +/** + * Device Logical IN Endpoint-Specific Registers. <i>Offsets + * 900h-AFCh</i> + * + * There will be one set of endpoint registers per logical endpoint + * implemented. + * + * <i>These registers are visible only in Device mode and must not be + * accessed in Host mode, as the results are unknown.</i> + */ +typedef struct dwc_otg_dev_in_ep_regs +{ + /** Device IN Endpoint Control Register. <i>Offset:900h + + * (ep_num * 20h) + 00h</i> */ + volatile uint32_t diepctl; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */ + uint32_t reserved04; + /** Device IN Endpoint Interrupt Register. <i>Offset:900h + + * (ep_num * 20h) + 08h</i> */ + volatile uint32_t diepint; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */ + uint32_t reserved0C; + /** Device IN Endpoint Transfer Size + * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */ + volatile uint32_t dieptsiz; + /** Device IN Endpoint DMA Address Register. <i>Offset:900h + + * (ep_num * 20h) + 14h</i> */ + volatile uint32_t diepdma; + /** Device IN Endpoint Transmit FIFO Status Register. <i>Offset:900h + + * (ep_num * 20h) + 18h</i> */ + volatile uint32_t dtxfsts; + /** Reserved. <i>Offset:900h + (ep_num * 20h) + 1Ch - 900h + + * (ep_num * 20h) + 1Ch</i>*/ + uint32_t reserved18; +} dwc_otg_dev_in_ep_regs_t; + +/** + * Device Logical OUT Endpoint-Specific Registers. <i>Offsets: + * B00h-CFCh</i> + * + * There will be one set of endpoint registers per logical endpoint + * implemented. + * + * <i>These registers are visible only in Device mode and must not be + * accessed in Host mode, as the results are unknown.</i> + */ +typedef struct dwc_otg_dev_out_ep_regs +{ + /** Device OUT Endpoint Control Register. <i>Offset:B00h + + * (ep_num * 20h) + 00h</i> */ + volatile uint32_t doepctl; + /** Device OUT Endpoint Frame number Register. <i>Offset: + * B00h + (ep_num * 20h) + 04h</i> */ + volatile uint32_t doepfn; + /** Device OUT Endpoint Interrupt Register. <i>Offset:B00h + + * (ep_num * 20h) + 08h</i> */ + volatile uint32_t doepint; + /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */ + uint32_t reserved0C; + /** Device OUT Endpoint Transfer Size Register. <i>Offset: + * B00h + (ep_num * 20h) + 10h</i> */ + volatile uint32_t doeptsiz; + /** Device OUT Endpoint DMA Address Register. <i>Offset:B00h + * + (ep_num * 20h) + 14h</i> */ + volatile uint32_t doepdma; + /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 18h - B00h + + * (ep_num * 20h) + 1Ch</i> */ + uint32_t unused[2]; +} dwc_otg_dev_out_ep_regs_t; + +/** + * This union represents the bit fields in the Device EP Control + * Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union depctl_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Maximum Packet Size + * IN/OUT EPn + * IN/OUT EP0 - 2 bits + * 2'b00: 64 Bytes + * 2'b01: 32 + * 2'b10: 16 + * 2'b11: 8 */ + unsigned mps : 11; +#define DWC_DEP0CTL_MPS_64 0 +#define DWC_DEP0CTL_MPS_32 1 +#define DWC_DEP0CTL_MPS_16 2 +#define DWC_DEP0CTL_MPS_8 3 + + /** Next Endpoint + * IN EPn/IN EP0 + * OUT EPn/OUT EP0 - reserved */ + unsigned nextep : 4; + + /** USB Active Endpoint */ + unsigned usbactep : 1; + + /** Endpoint DPID (INTR/Bulk IN and OUT endpoints) + * This field contains the PID of the packet going to + * be received or transmitted on this endpoint. The + * application should program the PID of the first + * packet going to be received or transmitted on this + * endpoint , after the endpoint is + * activated. Application use the SetD1PID and + * SetD0PID fields of this register to program either + * D0 or D1 PID. + * + * The encoding for this field is + * - 0: D0 + * - 1: D1 + */ + unsigned dpid : 1; + + /** NAK Status */ + unsigned naksts : 1; + + /** Endpoint Type + * 2'b00: Control + * 2'b01: Isochronous + * 2'b10: Bulk + * 2'b11: Interrupt */ + unsigned eptype : 2; + + /** Snoop Mode + * OUT EPn/OUT EP0 + * IN EPn/IN EP0 - reserved */ + unsigned snp : 1; + + /** Stall Handshake */ + unsigned stall : 1; + + /** Tx Fifo Number + * IN EPn/IN EP0 + * OUT EPn/OUT EP0 - reserved */ + unsigned txfnum : 4; + + /** Clear NAK */ + unsigned cnak : 1; + /** Set NAK */ + unsigned snak : 1; + /** Set DATA0 PID (INTR/Bulk IN and OUT endpoints) + * Writing to this field sets the Endpoint DPID (DPID) + * field in this register to DATA0. Set Even + * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints) + * Writing to this field sets the Even/Odd + * (micro)frame (EO_FrNum) field to even (micro) + * frame. + */ + unsigned setd0pid : 1; + /** Set DATA1 PID (INTR/Bulk IN and OUT endpoints) + * Writing to this field sets the Endpoint DPID (DPID) + * field in this register to DATA1 Set Odd + * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints) + * Writing to this field sets the Even/Odd + * (micro)frame (EO_FrNum) field to odd (micro) frame. + */ + unsigned setd1pid : 1; + + /** Endpoint Disable */ + unsigned epdis : 1; + /** Endpoint Enable */ + unsigned epena : 1; + } b; +} depctl_data_t; + +/** + * This union represents the bit fields in the Device EP Transfer + * Size Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union deptsiz_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Transfer size */ + unsigned xfersize : 19; + /** Packet Count */ + unsigned pktcnt : 10; + /** Multi Count - Periodic IN endpoints */ + unsigned mc : 2; + unsigned reserved : 1; + } b; +} deptsiz_data_t; + +/** + * This union represents the bit fields in the Device EP 0 Transfer + * Size Register. Read the register into the <i>d32</i> member then + * set/clear the bits using the <i>b</i>it elements. + */ +typedef union deptsiz0_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Transfer size */ + unsigned xfersize : 7; + /** Reserved */ + unsigned reserved7_18 : 12; + /** Packet Count */ + unsigned pktcnt : 2; + /** Reserved */ + unsigned reserved21_28 : 9; + /**Setup Packet Count (DOEPTSIZ0 Only) */ + unsigned supcnt : 2; + unsigned reserved31; + } b; +} deptsiz0_data_t; + + +/** Maximum number of Periodic FIFOs */ +#define MAX_PERIO_FIFOS 15 +/** Maximum number of Periodic FIFOs */ +#define MAX_TX_FIFOS 15 + +/** Maximum number of Endpoints/HostChannels */ +#define MAX_EPS_CHANNELS 4 + +/** + * The dwc_otg_dev_if structure contains information needed to manage + * the DWC_otg controller acting in device mode. It represents the + * programming view of the device-specific aspects of the controller. + */ +typedef struct dwc_otg_dev_if +{ + /** Pointer to device Global registers. + * Device Global Registers starting at offset 800h + */ + dwc_otg_device_global_regs_t *dev_global_regs; +#define DWC_DEV_GLOBAL_REG_OFFSET 0x800 + + /** + * Device Logical IN Endpoint-Specific Registers 900h-AFCh + */ + dwc_otg_dev_in_ep_regs_t *in_ep_regs[MAX_EPS_CHANNELS/2]; +#define DWC_DEV_IN_EP_REG_OFFSET 0x900 +#define DWC_EP_REG_OFFSET 0x20 + + /** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */ + dwc_otg_dev_out_ep_regs_t *out_ep_regs[MAX_EPS_CHANNELS/2]; +#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00 + + /* Device configuration information*/ + uint8_t speed; /**< Device Speed 0: Unknown, 1: LS, 2:FS, 3: HS */ + uint8_t num_in_eps; /**< Number # of Tx EP range: 0-15 exept ep0 */ + uint8_t num_out_eps; /**< Number # of Rx EP range: 0-15 exept ep 0*/ + + /** Size of periodic FIFOs (Bytes) */ + uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS]; + + /** Size of Tx FIFOs (Bytes) */ + uint16_t tx_fifo_size[MAX_TX_FIFOS]; + + /** Thresholding enable flags and length varaiables **/ + uint16_t rx_thr_en; + uint16_t iso_tx_thr_en; + uint16_t non_iso_tx_thr_en; + + uint16_t rx_thr_length; + uint16_t tx_thr_length; + +} dwc_otg_dev_if_t; + + +///////////////////////////////////////////////// +// Host Mode Register Structures +// +/** + * The Host Global Registers structure defines the size and relative + * field offsets for the Host Mode Global Registers. Host Global + * Registers offsets 400h-7FFh. +*/ +typedef struct dwc_otg_host_global_regs +{ + /** Host Configuration Register. <i>Offset: 400h</i> */ + volatile uint32_t hcfg; + /** Host Frame Interval Register. <i>Offset: 404h</i> */ + volatile uint32_t hfir; + /** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */ + volatile uint32_t hfnum; + /** Reserved. <i>Offset: 40Ch</i> */ + uint32_t reserved40C; + /** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */ + volatile uint32_t hptxsts; + /** Host All Channels Interrupt Register. <i>Offset: 414h</i> */ + volatile uint32_t haint; + /** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */ + volatile uint32_t haintmsk; +} dwc_otg_host_global_regs_t; + +/** + * This union represents the bit fields in the Host Configuration Register. + * Read the register into the <i>d32</i> member then set/clear the bits using + * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register. + */ +typedef union hcfg_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** FS/LS Phy Clock Select */ + unsigned fslspclksel : 2; +#define DWC_HCFG_30_60_MHZ 0 +#define DWC_HCFG_48_MHZ 1 +#define DWC_HCFG_6_MHZ 2 + + /** FS/LS Only Support */ + unsigned fslssupp : 1; + } b; +} hcfg_data_t; + +/** + * This union represents the bit fields in the Host Frame Remaing/Number + * Register. + */ +typedef union hfir_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned frint : 16; + unsigned reserved : 16; + } b; +} hfir_data_t; + +/** + * This union represents the bit fields in the Host Frame Remaing/Number + * Register. + */ +typedef union hfnum_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned frnum : 16; +#define DWC_HFNUM_MAX_FRNUM 0x3FFF + unsigned frrem : 16; + } b; +} hfnum_data_t; + +typedef union hptxsts_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned ptxfspcavail : 16; + unsigned ptxqspcavail : 8; + /** Top of the Periodic Transmit Request Queue + * - bit 24 - Terminate (last entry for the selected channel) + * - bits 26:25 - Token Type + * - 2'b00 - Zero length + * - 2'b01 - Ping + * - 2'b10 - Disable + * - bits 30:27 - Channel Number + * - bit 31 - Odd/even microframe + */ + unsigned ptxqtop_terminate : 1; + unsigned ptxqtop_token : 2; + unsigned ptxqtop_chnum : 4; + unsigned ptxqtop_odd : 1; + } b; +} hptxsts_data_t; + +/** + * This union represents the bit fields in the Host Port Control and Status + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hprt0 register. + */ +typedef union hprt0_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned prtconnsts : 1; + unsigned prtconndet : 1; + unsigned prtena : 1; + unsigned prtenchng : 1; + unsigned prtovrcurract : 1; + unsigned prtovrcurrchng : 1; + unsigned prtres : 1; + unsigned prtsusp : 1; + unsigned prtrst : 1; + unsigned reserved9 : 1; + unsigned prtlnsts : 2; + unsigned prtpwr : 1; + unsigned prttstctl : 4; + unsigned prtspd : 2; +#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0 +#define DWC_HPRT0_PRTSPD_FULL_SPEED 1 +#define DWC_HPRT0_PRTSPD_LOW_SPEED 2 + unsigned reserved19_31 : 13; + } b; +} hprt0_data_t; + +/** + * This union represents the bit fields in the Host All Interrupt + * Register. + */ +typedef union haint_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned ch0 : 1; + unsigned ch1 : 1; + unsigned ch2 : 1; + unsigned ch3 : 1; + unsigned ch4 : 1; + unsigned ch5 : 1; + unsigned ch6 : 1; + unsigned ch7 : 1; + unsigned ch8 : 1; + unsigned ch9 : 1; + unsigned ch10 : 1; + unsigned ch11 : 1; + unsigned ch12 : 1; + unsigned ch13 : 1; + unsigned ch14 : 1; + unsigned ch15 : 1; + unsigned reserved : 16; + } b; + + struct { + unsigned chint : 16; + unsigned reserved : 16; + } b2; +} haint_data_t; + +/** + * This union represents the bit fields in the Host All Interrupt + * Register. + */ +typedef union haintmsk_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + unsigned ch0 : 1; + unsigned ch1 : 1; + unsigned ch2 : 1; + unsigned ch3 : 1; + unsigned ch4 : 1; + unsigned ch5 : 1; + unsigned ch6 : 1; + unsigned ch7 : 1; + unsigned ch8 : 1; + unsigned ch9 : 1; + unsigned ch10 : 1; + unsigned ch11 : 1; + unsigned ch12 : 1; + unsigned ch13 : 1; + unsigned ch14 : 1; + unsigned ch15 : 1; + unsigned reserved : 16; + } b; + + struct { + unsigned chint : 16; + unsigned reserved : 16; + } b2; +} haintmsk_data_t; + +/** + * Host Channel Specific Registers. <i>500h-5FCh</i> + */ +typedef struct dwc_otg_hc_regs +{ + /** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */ + volatile uint32_t hcchar; + /** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */ + volatile uint32_t hcsplt; + /** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */ + volatile uint32_t hcint; + /** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */ + volatile uint32_t hcintmsk; + /** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */ + volatile uint32_t hctsiz; + /** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */ + volatile uint32_t hcdma; + /** Reserved. <i>Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch</i> */ + uint32_t reserved[2]; +} dwc_otg_hc_regs_t; + +/** + * This union represents the bit fields in the Host Channel Characteristics + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hcchar register. + */ +typedef union hcchar_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** Maximum packet size in bytes */ + unsigned mps : 11; + + /** Endpoint number */ + unsigned epnum : 4; + + /** 0: OUT, 1: IN */ + unsigned epdir : 1; + + unsigned reserved : 1; + + /** 0: Full/high speed device, 1: Low speed device */ + unsigned lspddev : 1; + + /** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */ + unsigned eptype : 2; + + /** Packets per frame for periodic transfers. 0 is reserved. */ + unsigned multicnt : 2; + + /** Device address */ + unsigned devaddr : 7; + + /** + * Frame to transmit periodic transaction. + * 0: even, 1: odd + */ + unsigned oddfrm : 1; + + /** Channel disable */ + unsigned chdis : 1; + + /** Channel enable */ + unsigned chen : 1; + } b; +} hcchar_data_t; + +typedef union hcsplt_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** Port Address */ + unsigned prtaddr : 7; + + /** Hub Address */ + unsigned hubaddr : 7; + + /** Transaction Position */ + unsigned xactpos : 2; +#define DWC_HCSPLIT_XACTPOS_MID 0 +#define DWC_HCSPLIT_XACTPOS_END 1 +#define DWC_HCSPLIT_XACTPOS_BEGIN 2 +#define DWC_HCSPLIT_XACTPOS_ALL 3 + + /** Do Complete Split */ + unsigned compsplt : 1; + + /** Reserved */ + unsigned reserved : 14; + + /** Split Enble */ + unsigned spltena : 1; + } b; +} hcsplt_data_t; + + +/** + * This union represents the bit fields in the Host All Interrupt + * Register. + */ +typedef union hcint_data +{ + /** raw register data */ + uint32_t d32; + /** register bits */ + struct { + /** Transfer Complete */ + unsigned xfercomp : 1; + /** Channel Halted */ + unsigned chhltd : 1; + /** AHB Error */ + unsigned ahberr : 1; + /** STALL Response Received */ + unsigned stall : 1; + /** NAK Response Received */ + unsigned nak : 1; + /** ACK Response Received */ + unsigned ack : 1; + /** NYET Response Received */ + unsigned nyet : 1; + /** Transaction Err */ + unsigned xacterr : 1; + /** Babble Error */ + unsigned bblerr : 1; + /** Frame Overrun */ + unsigned frmovrun : 1; + /** Data Toggle Error */ + unsigned datatglerr : 1; + /** Reserved */ + unsigned reserved : 21; + } b; +} hcint_data_t; + +/** + * This union represents the bit fields in the Host Channel Transfer Size + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hcchar register. + */ +typedef union hctsiz_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** Total transfer size in bytes */ + unsigned xfersize : 19; + + /** Data packets to transfer */ + unsigned pktcnt : 10; + + /** + * Packet ID for next data packet + * 0: DATA0 + * 1: DATA2 + * 2: DATA1 + * 3: MDATA (non-Control), SETUP (Control) + */ + unsigned pid : 2; +#define DWC_HCTSIZ_DATA0 0 +#define DWC_HCTSIZ_DATA1 2 +#define DWC_HCTSIZ_DATA2 1 +#define DWC_HCTSIZ_MDATA 3 +#define DWC_HCTSIZ_SETUP 3 + + /** Do PING protocol when 1 */ + unsigned dopng : 1; + } b; +} hctsiz_data_t; + +/** + * This union represents the bit fields in the Host Channel Interrupt Mask + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the + * hcintmsk register. + */ +typedef union hcintmsk_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + unsigned xfercompl : 1; + unsigned chhltd : 1; + unsigned ahberr : 1; + unsigned stall : 1; + unsigned nak : 1; + unsigned ack : 1; + unsigned nyet : 1; + unsigned xacterr : 1; + unsigned bblerr : 1; + unsigned frmovrun : 1; + unsigned datatglerr : 1; + unsigned reserved : 21; + } b; +} hcintmsk_data_t; + +/** OTG Host Interface Structure. + * + * The OTG Host Interface Structure structure contains information + * needed to manage the DWC_otg controller acting in host mode. It + * represents the programming view of the host-specific aspects of the + * controller. + */ +typedef struct dwc_otg_host_if +{ + /** Host Global Registers starting at offset 400h.*/ + dwc_otg_host_global_regs_t *host_global_regs; +#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400 + + /** Host Port 0 Control and Status Register */ + volatile uint32_t *hprt0; +#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440 + + + /** Host Channel Specific Registers at offsets 500h-5FCh. */ + dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS]; +#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500 +#define DWC_OTG_CHAN_REGS_OFFSET 0x20 + + + /* Host configuration information */ + /** Number of Host Channels (range: 1-16) */ + uint8_t num_host_channels; + /** Periodic EPs supported (0: no, 1: yes) */ + uint8_t perio_eps_supported; + /** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */ + uint16_t perio_tx_fifo_size; + +} dwc_otg_host_if_t; + +/** + * This union represents the bit fields in the Power and Clock Gating Control + * Register. Read the register into the <i>d32</i> member then set/clear the + * bits using the <i>b</i>it elements. + */ +typedef union pcgcctl_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** Stop Pclk */ + unsigned stoppclk : 1; + /** Gate Hclk */ + unsigned gatehclk : 1; + /** Power Clamp */ + unsigned pwrclmp : 1; + /** Reset Power Down Modules */ + unsigned rstpdwnmodule : 1; + /** PHY Suspended */ + unsigned physuspended : 1; + + unsigned reserved : 27; + } b; +} pcgcctl_data_t; + +#endif /* CONFIG_4xx */ +#endif diff --git a/drivers/usb/gadget/dwc_otg/linux/dwc_otg_plat.h b/drivers/usb/gadget/dwc_otg/linux/dwc_otg_plat.h new file mode 100644 index 00000000000..c2fe8caecf6 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/linux/dwc_otg_plat.h @@ -0,0 +1,304 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/platform/dwc_otg_plat.h $ + * $Revision: #1 $ + * $Date: 2005/07/07 $ + * $Change: 510301 $ + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +#if !defined(__DWC_OTG_PLAT_H__) +#define __DWC_OTG_PLAT_H__ + +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/list.h> +#include <linux/delay.h> +#include <asm/io.h> + +/** + * @file + * + * This file contains the Platform Specific constants, interfaces + * (functions and macros) for Linux. + * + */ +#if !defined(CONFIG_4xx) +#error "The contents of this file are AMCC 44x processor specific!!!" +#endif + +#if defined(CONFIG_405EX) || defined(CONFIG_460EX) || \ + defined(CONFIG_APM82181) +#define CONFIG_DWC_OTG_REG_LE +#endif + +#if defined(CONFIG_405EZ) +#define CONFIG_DWC_OTG_FIFO_LE +#endif + +#define SZ_256K 0x00040000 +/** + * Reads the content of a register. + * + * @param _reg address of register to read. + * @return contents of the register. + * + + * Usage:<br> + * <code>uint32_t dev_ctl = dwc_read_reg32(&dev_regs->dctl);</code> + */ +static __inline__ uint32_t dwc_read_reg32( volatile uint32_t *_reg) +{ +#ifdef CONFIG_DWC_OTG_REG_LE + return in_le32(_reg); +#else + return in_be32(_reg); +#endif +}; + +/** + * Writes a register with a 32 bit value. + * + * @param _reg address of register to read. + * @param _value to write to _reg. + * + * Usage:<br> + * <code>dwc_write_reg32(&dev_regs->dctl, 0); </code> + */ +static __inline__ void dwc_write_reg32( volatile uint32_t *_reg, const uint32_t _value) +{ +#ifdef CONFIG_DWC_OTG_REG_LE + out_le32(_reg, _value); +#else + out_be32(_reg, _value); +#endif +}; + +/** + * This function modifies bit values in a register. Using the + * algorithm: (reg_contents & ~clear_mask) | set_mask. + * + * @param _reg address of register to read. + * @param _clear_mask bit mask to be cleared. + * @param _set_mask bit mask to be set. + * + * Usage:<br> + * <code> // Clear the SOF Interrupt Mask bit and <br> + * // set the OTG Interrupt mask bit, leaving all others as they were. + * dwc_modify_reg32(&dev_regs->gintmsk, DWC_SOF_INT, DWC_OTG_INT);</code> + */ +static __inline__ +void dwc_modify_reg32( volatile uint32_t *_reg, const uint32_t _clear_mask, const uint32_t _set_mask) +{ +#ifdef CONFIG_DWC_OTG_REG_LE + out_le32( _reg, (in_le32(_reg) & ~_clear_mask) | _set_mask ); +#else + out_be32( _reg, (in_be32(_reg) & ~_clear_mask) | _set_mask ); +#endif +}; + +static __inline__ void dwc_write_datafifo32( volatile uint32_t *_reg, const uint32_t _value) +{ +#ifdef CONFIG_DWC_OTG_FIFO_LE + out_le32(_reg, _value); +#else + out_be32(_reg, _value); +#endif +}; + +static __inline__ uint32_t dwc_read_datafifo32( volatile uint32_t *_reg) +{ +#ifdef CONFIG_DWC_OTG_FIFO_LE + return in_le32(_reg); +#else + return in_be32(_reg); +#endif +}; + + +/** + * Wrapper for the OS micro-second delay function. + * @param[in] _usecs Microseconds of delay + */ +static __inline__ void UDELAY( const uint32_t _usecs ) +{ + udelay( _usecs ); +} + +/** + * Wrapper for the OS milli-second delay function. + * @param[in] _msecs milliseconds of delay + */ +static __inline__ void MDELAY( const uint32_t _msecs ) +{ + mdelay( _msecs ); +} + +/** + * Wrapper for the Linux spin_lock. On the ARM (Integrator) + * spin_lock() is a nop. + * + * @param _lock Pointer to the spinlock. + */ +static __inline__ void SPIN_LOCK( spinlock_t *_lock ) +{ + spin_lock(_lock); +} + +/** + * Wrapper for the Linux spin_unlock. On the ARM (Integrator) + * spin_lock() is a nop. + * + * @param _lock Pointer to the spinlock. + */ +static __inline__ void SPIN_UNLOCK( spinlock_t *_lock ) +{ + spin_unlock(_lock); +} + +/** + * Wrapper (macro) for the Linux spin_lock_irqsave. On the ARM + * (Integrator) spin_lock() is a nop. + * + * @param _l Pointer to the spinlock. + * @param _f unsigned long for irq flags storage. + */ +#define SPIN_LOCK_IRQSAVE( _l, _f ) { \ + spin_lock_irqsave(_l,_f); \ + } + +/** + * Wrapper (macro) for the Linux spin_unlock_irqrestore. On the ARM + * (Integrator) spin_lock() is a nop. + * + * @param _l Pointer to the spinlock. + * @param _f unsigned long for irq flags storage. + */ +#define SPIN_UNLOCK_IRQRESTORE( _l,_f ) {\ + spin_unlock_irqrestore(_l,_f); \ + } + + +/* + * Debugging support vanishes in non-debug builds. + */ + + +/** + * The Debug Level bit-mask variable. + */ +extern uint32_t g_dbg_lvl; +/** + * Set the Debug Level variable. + */ +static inline uint32_t SET_DEBUG_LEVEL( const uint32_t _new ) +{ + uint32_t old = g_dbg_lvl; + g_dbg_lvl = _new; + return old; +} + +/** When debug level has the DBG_CIL bit set, display CIL Debug messages. */ +#define DBG_CIL (0x2) +/** When debug level has the DBG_CILV bit set, display CIL Verbose debug + * messages */ +#define DBG_CILV (0x20) +/** When debug level has the DBG_PCD bit set, display PCD (Device) debug + * messages */ +#define DBG_PCD (0x4) +/** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug + * messages */ +#define DBG_PCDV (0x40) +/** When debug level has the DBG_HCD bit set, display Host debug messages */ +#define DBG_HCD (0x8) +/** When debug level has the DBG_HCDV bit set, display Verbose Host debug + * messages */ +#define DBG_HCDV (0x80) +/** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host + * mode. */ +#define DBG_HCD_URB (0x800) + +/** When debug level has any bit set, display debug messages */ +#define DBG_ANY (0xFF) + +/** All debug messages off */ +#define DBG_OFF 0 + +/** Prefix string for DWC_DEBUG print macros. */ +#define USB_DWC "dwc_otg: " + +/** + * Print a debug message when the Global debug level variable contains + * the bit defined in <code>lvl</code>. + * + * @param[in] lvl - Debug level, use one of the DBG_ constants above. + * @param[in] x - like printf + * + * Example:<p> + * <code> + * DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr); + * </code> + * <br> + * results in:<br> + * <code> + * usb-DWC_otg: dwc_otg_cil_init(ca867000) + * </code> + */ +#ifdef DEBUG +# define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)printk( KERN_ERR USB_DWC x ); }while(0) +# define DWC_DEBUGP(x...) DWC_DEBUGPL(DBG_ANY, x ) + +# define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl) + +#else + +# define DWC_DEBUGPL(lvl, x...) do{}while(0) +# define DWC_DEBUGP(x...) + +# define CHK_DEBUG_LEVEL(level) (0) + +#endif /*DEBUG*/ + +/** + * Print an Error message. + */ +#define DWC_ERROR(x...) printk( KERN_ERR USB_DWC x ) +/** + * Print a Warning message. + */ +#define DWC_WARN(x...) printk( KERN_WARNING USB_DWC x ) +/** + * Print a notice (normal but significant message). + */ +#define DWC_NOTICE(x...) printk( KERN_NOTICE USB_DWC x ) +/** + * Basic message printing. + */ +#define DWC_PRINT(x...) printk( KERN_INFO USB_DWC x ) + +#endif + diff --git a/drivers/usb/gadget/dwc_otg/ppc4xx_dma.c b/drivers/usb/gadget/dwc_otg/ppc4xx_dma.c new file mode 100644 index 00000000000..844222d21fc --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/ppc4xx_dma.c @@ -0,0 +1,735 @@ +/* + * IBM PPC4xx DMA engine core library + * + * Copyright 2000-2004 MontaVista Software Inc. + * + * Cleaned up and converted to new DCR access + * Matt Porter <mporter@kernel.crashing.org> + * + * Original code by Armin Kuster <akuster@mvista.com> + * and Pete Popov <ppopov@mvista.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. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/miscdevice.h> +#include <linux/init.h> +#include <linux/module.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/dcr.h> +#include "ppc4xx_dma.h" + +ppc_dma_ch_t dma_channels[MAX_PPC4xx_DMA_CHANNELS]; + +int +ppc4xx_get_dma_status(void) +{ + return (mfdcr(DCRN_DMASR)); +} + +void +ppc4xx_set_src_addr(int dmanr, phys_addr_t src_addr) +{ + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("set_src_addr: bad channel: %d\n", dmanr); + return; + } + +#ifdef PPC4xx_DMA_64BIT + mtdcr(DCRN_DMASAH0 + dmanr*8, src_addr >> 32); +#endif + mtdcr(DCRN_DMASA0 + dmanr*8, (u32)src_addr); +} + +void +ppc4xx_set_dst_addr(int dmanr, phys_addr_t dst_addr) +{ + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("set_dst_addr: bad channel: %d\n", dmanr); + return; + } + +#ifdef PPC4xx_DMA_64BIT + mtdcr(DCRN_DMADAH0 + dmanr*8, dst_addr >> 32); +#endif + mtdcr(DCRN_DMADA0 + dmanr*8, (u32)dst_addr); +} + +void +ppc4xx_enable_dma(unsigned int dmanr) +{ + unsigned int control; + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + unsigned int status_bits[] = { DMA_CS0 | DMA_TS0 | DMA_CH0_ERR, + DMA_CS1 | DMA_TS1 | DMA_CH1_ERR, + DMA_CS2 | DMA_TS2 | DMA_CH2_ERR, + DMA_CS3 | DMA_TS3 | DMA_CH3_ERR}; + + if (p_dma_ch->in_use) { + printk("enable_dma: channel %d in use\n", dmanr); + return; + } + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("enable_dma: bad channel: %d\n", dmanr); + return; + } + + if (p_dma_ch->mode == DMA_MODE_READ) { + /* peripheral to memory */ + ppc4xx_set_src_addr(dmanr, 0); + ppc4xx_set_dst_addr(dmanr, p_dma_ch->addr); + } else if (p_dma_ch->mode == DMA_MODE_WRITE) { + /* memory to peripheral */ + ppc4xx_set_src_addr(dmanr, p_dma_ch->addr); + ppc4xx_set_dst_addr(dmanr, 0); + } + + /* for other xfer modes, the addresses are already set */ + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + + control &= ~(DMA_TM_MASK | DMA_TD); /* clear all mode bits */ + if (p_dma_ch->mode == DMA_MODE_MM) { + /* software initiated memory to memory */ + control |= DMA_ETD_OUTPUT | DMA_TCE_ENABLE; +#if defined(CONFIG_405EX) || defined(CONFIG_405EXr) || \ + defined(CONFIG_APM82181) + control |= DMA_MODE_MM; + if (p_dma_ch->dai) { + control |= DMA_DAI; + } + if (p_dma_ch->sai) { + control |= DMA_SAI; + } + +#endif +#if defined(CONFIG_460EX) || defined(CONFIG_460GT) || \ + defined(CONFIG_APM82181) + control |= DMA_MODE_MM | DMA_DAI | DMA_SAI; +#endif + } + + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + /* + * Clear the CS, TS, RI bits for the channel from DMASR. This + * has been observed to happen correctly only after the mode and + * ETD/DCE bits in DMACRx are set above. Must do this before + * enabling the channel. + */ + + mtdcr(DCRN_DMASR, status_bits[dmanr]); + + /* + * For device-paced transfers, Terminal Count Enable apparently + * must be on, and this must be turned on after the mode, etc. + * bits are cleared above (at least on Redwood-6). + */ + + if ((p_dma_ch->mode == DMA_MODE_MM_DEVATDST) || + (p_dma_ch->mode == DMA_MODE_MM_DEVATSRC)) + control |= DMA_TCE_ENABLE; + + /* + * Now enable the channel. + */ + + control |= (p_dma_ch->mode | DMA_CE_ENABLE); + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + p_dma_ch->in_use = 1; +} + +void +ppc4xx_disable_dma(unsigned int dmanr) +{ + unsigned int control; + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + if (!p_dma_ch->in_use) { + printk("disable_dma: channel %d not in use\n", dmanr); + return; + } + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("disable_dma: bad channel: %d\n", dmanr); + return; + } + + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + control &= ~DMA_CE_ENABLE; + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + p_dma_ch->in_use = 0; +} + +/* + * Sets the dma mode for single DMA transfers only. + * For scatter/gather transfers, the mode is passed to the + * alloc_dma_handle() function as one of the parameters. + * + * The mode is simply saved and used later. This allows + * the driver to call set_dma_mode() and set_dma_addr() in + * any order. + * + * Valid mode values are: + * + * DMA_MODE_READ peripheral to memory + * DMA_MODE_WRITE memory to peripheral + * DMA_MODE_MM memory to memory + * DMA_MODE_MM_DEVATSRC device-paced memory to memory, device at src + * DMA_MODE_MM_DEVATDST device-paced memory to memory, device at dst + */ +int +ppc4xx_set_dma_mode(unsigned int dmanr, unsigned int mode) +{ + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("set_dma_mode: bad channel 0x%x\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + p_dma_ch->mode = mode; + + return DMA_STATUS_GOOD; +} + +/* + * Sets the DMA Count register. Note that 'count' is in bytes. + * However, the DMA Count register counts the number of "transfers", + * where each transfer is equal to the bus width. Thus, count + * MUST be a multiple of the bus width. + */ +void +ppc4xx_set_dma_count(unsigned int dmanr, unsigned int count) +{ + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + +#ifdef DEBUG_4xxDMA + { + int error = 0; + switch (p_dma_ch->pwidth) { + case PW_8: + break; + case PW_16: + if (count & 0x1) + error = 1; + break; + case PW_32: + if (count & 0x3) + error = 1; + break; + case PW_64: + if (count & 0x7) + error = 1; + break; + default: + printk("set_dma_count: invalid bus width: 0x%x\n", + p_dma_ch->pwidth); + return; + } + if (error) + printk + ("Warning: set_dma_count count 0x%x bus width %d\n", + count, p_dma_ch->pwidth); + } +#endif + + count = count >> p_dma_ch->shift; + + mtdcr(DCRN_DMACT0 + (dmanr * 0x8), count); +} + +/* + * Returns the number of bytes left to be transfered. + * After a DMA transfer, this should return zero. + * Reading this while a DMA transfer is still in progress will return + * unpredictable results. + */ +int +ppc4xx_get_dma_residue(unsigned int dmanr) +{ + unsigned int count; + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_get_dma_residue: bad channel 0x%x\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + count = mfdcr(DCRN_DMACT0 + (dmanr * 0x8)); +#if defined(CONFIG_405EX) || defined(CONFIG_405EXr) || \ + defined(CONFIG_460EX) || defined(CONFIG_460GT) || \ + defined(CONFIG_APM82181) + count &= DMA_CTC_TC_MASK; +#endif + + return (count << p_dma_ch->shift); +} + +/* + * Sets the DMA address for a memory to peripheral or peripheral + * to memory transfer. The address is just saved in the channel + * structure for now and used later in enable_dma(). + */ +void +ppc4xx_set_dma_addr(unsigned int dmanr, phys_addr_t addr) +{ + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_set_dma_addr: bad channel: %d\n", dmanr); + return; + } + +#ifdef DEBUG_4xxDMA + { + int error = 0; + switch (p_dma_ch->pwidth) { + case PW_8: + break; + case PW_16: + if ((unsigned) addr & 0x1) + error = 1; + break; + case PW_32: + if ((unsigned) addr & 0x3) + error = 1; + break; + case PW_64: + if ((unsigned) addr & 0x7) + error = 1; + break; + default: + printk("ppc4xx_set_dma_addr: invalid bus width: 0x%x\n", + p_dma_ch->pwidth); + return; + } + if (error) + printk("Warning: ppc4xx_set_dma_addr addr 0x%x bus width %d\n", + addr, p_dma_ch->pwidth); + } +#endif + + /* save dma address and program it later after we know the xfer mode */ + p_dma_ch->addr = addr; +} + +/* + * Sets both DMA addresses for a memory to memory transfer. + * For memory to peripheral or peripheral to memory transfers + * the function set_dma_addr() should be used instead. + */ +void +ppc4xx_set_dma_addr2(unsigned int dmanr, phys_addr_t src_dma_addr, + phys_addr_t dst_dma_addr) +{ + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_set_dma_addr2: bad channel: %d\n", dmanr); + return; + } + +#ifdef DEBUG_4xxDMA + { + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + int error = 0; + switch (p_dma_ch->pwidth) { + case PW_8: + break; + case PW_16: + if (((unsigned) src_dma_addr & 0x1) || + ((unsigned) dst_dma_addr & 0x1) + ) + error = 1; + break; + case PW_32: + if (((unsigned) src_dma_addr & 0x3) || + ((unsigned) dst_dma_addr & 0x3) + ) + error = 1; + break; + case PW_64: + if (((unsigned) src_dma_addr & 0x7) || + ((unsigned) dst_dma_addr & 0x7) + ) + error = 1; + break; + default: + printk("ppc4xx_set_dma_addr2: invalid bus width: 0x%x\n", + p_dma_ch->pwidth); + return; + } + if (error) + printk + ("Warning: ppc4xx_set_dma_addr2 src 0x%x dst 0x%x bus width %d\n", + src_dma_addr, dst_dma_addr, p_dma_ch->pwidth); + } +#endif + + ppc4xx_set_src_addr(dmanr, src_dma_addr); + ppc4xx_set_dst_addr(dmanr, dst_dma_addr); +} + +/* + * Enables the channel interrupt. + * + * If performing a scatter/gatter transfer, this function + * MUST be called before calling alloc_dma_handle() and building + * the sgl list. Otherwise, interrupts will not be enabled, if + * they were previously disabled. + */ +int +ppc4xx_enable_dma_interrupt(unsigned int dmanr) +{ + unsigned int control; + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_enable_dma_interrupt: bad channel: %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + p_dma_ch->int_enable = 1; + +#if defined(CONFIG_405EX) || defined (CONFIG_405EXr) || \ + defined(CONFIG_460EX) || defined (CONFIG_460GT) || \ + defined(CONFIG_APM82181) + control = mfdcr(DCRN_DMACT0 + (dmanr * 0x8)); + control |= DMA_CTC_TCIE | DMA_CTC_ETIE | DMA_CTC_EIE; + mtdcr(DCRN_DMACT0 + (dmanr * 0x8), control); +#endif + + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + control |= DMA_CIE_ENABLE; /* Channel Interrupt Enable */ + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + return DMA_STATUS_GOOD; +} + +/* + * Disables the channel interrupt. + * + * If performing a scatter/gatter transfer, this function + * MUST be called before calling alloc_dma_handle() and building + * the sgl list. Otherwise, interrupts will not be disabled, if + * they were previously enabled. + */ +int +ppc4xx_disable_dma_interrupt(unsigned int dmanr) +{ + unsigned int control; + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_disable_dma_interrupt: bad channel: %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + p_dma_ch->int_enable = 0; + + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + control &= ~DMA_CIE_ENABLE; /* Channel Interrupt Enable */ + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + return DMA_STATUS_GOOD; +} + +/* + * Configures a DMA channel, including the peripheral bus width, if a + * peripheral is attached to the channel, the polarity of the DMAReq and + * DMAAck signals, etc. This information should really be setup by the boot + * code, since most likely the configuration won't change dynamically. + * If the kernel has to call this function, it's recommended that it's + * called from platform specific init code. The driver should not need to + * call this function. + */ +int +ppc4xx_init_dma_channel(unsigned int dmanr, ppc_dma_ch_t * p_init) +{ + unsigned int polarity; + uint32_t control = 0; + ppc_dma_ch_t *p_dma_ch = &dma_channels[dmanr]; + + DMA_MODE_READ = (unsigned long) DMA_TD; /* Peripheral to Memory */ + DMA_MODE_WRITE = 0; /* Memory to Peripheral */ + + if (!p_init) { + printk("ppc4xx_init_dma_channel: NULL p_init\n"); + return DMA_STATUS_NULL_POINTER; + } + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_init_dma_channel: bad channel %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + +#if DCRN_POL > 0 + polarity = mfdcr(DCRN_POL); +#else + polarity = 0; +#endif + + /* Setup the control register based on the values passed to + * us in p_init. Then, over-write the control register with this + * new value. + */ + control |= SET_DMA_CONTROL; + + /* clear all polarity signals and then "or" in new signal levels */ + polarity &= ~GET_DMA_POLARITY(dmanr); + polarity |= p_init->polarity; +#if DCRN_POL > 0 + mtdcr(DCRN_POL, polarity); +#endif + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + /* save these values in our dma channel structure */ + memcpy(p_dma_ch, p_init, sizeof (ppc_dma_ch_t)); + + /* + * The peripheral width values written in the control register are: + * PW_8 0 + * PW_16 1 + * PW_32 2 + * PW_64 3 + * + * Since the DMA count register takes the number of "transfers", + * we need to divide the count sent to us in certain + * functions by the appropriate number. It so happens that our + * right shift value is equal to the peripheral width value. + */ + p_dma_ch->shift = p_init->pwidth; + + /* + * Save the control word for easy access. + */ + p_dma_ch->control = control; + mtdcr(DCRN_DMASR, 0xffffffff); /* clear status register */ + return DMA_STATUS_GOOD; +} + +/* + * This function returns the channel configuration. + */ +int +ppc4xx_get_channel_config(unsigned int dmanr, ppc_dma_ch_t * p_dma_ch) +{ + unsigned int polarity; + unsigned int control; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_get_channel_config: bad channel %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + memcpy(p_dma_ch, &dma_channels[dmanr], sizeof (ppc_dma_ch_t)); + +#if DCRN_POL > 0 + polarity = mfdcr(DCRN_POL); +#else + polarity = 0; +#endif + + p_dma_ch->polarity = polarity & GET_DMA_POLARITY(dmanr); + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + + p_dma_ch->cp = GET_DMA_PRIORITY(control); + p_dma_ch->pwidth = GET_DMA_PW(control); + p_dma_ch->psc = GET_DMA_PSC(control); + p_dma_ch->pwc = GET_DMA_PWC(control); + p_dma_ch->phc = GET_DMA_PHC(control); + p_dma_ch->ce = GET_DMA_CE_ENABLE(control); + p_dma_ch->int_enable = GET_DMA_CIE_ENABLE(control); + p_dma_ch->shift = GET_DMA_PW(control); + +#ifdef CONFIG_PPC4xx_EDMA + p_dma_ch->pf = GET_DMA_PREFETCH(control); +#else + p_dma_ch->ch_enable = GET_DMA_CH(control); + p_dma_ch->ece_enable = GET_DMA_ECE(control); + p_dma_ch->tcd_disable = GET_DMA_TCD(control); +#endif + return DMA_STATUS_GOOD; +} + +/* + * Sets the priority for the DMA channel dmanr. + * Since this is setup by the hardware init function, this function + * can be used to dynamically change the priority of a channel. + * + * Acceptable priorities: + * + * PRIORITY_LOW + * PRIORITY_MID_LOW + * PRIORITY_MID_HIGH + * PRIORITY_HIGH + * + */ +int +ppc4xx_set_channel_priority(unsigned int dmanr, unsigned int priority) +{ + unsigned int control; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_set_channel_priority: bad channel %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + if ((priority != PRIORITY_LOW) && + (priority != PRIORITY_MID_LOW) && + (priority != PRIORITY_MID_HIGH) && (priority != PRIORITY_HIGH)) { + printk("ppc4xx_set_channel_priority: bad priority: 0x%x\n", priority); + } + + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + control |= SET_DMA_PRIORITY(priority); + mtdcr(DCRN_DMACR0 + (dmanr * 0x8), control); + + return DMA_STATUS_GOOD; +} + +/* + * Returns the width of the peripheral attached to this channel. This assumes + * that someone who knows the hardware configuration, boot code or some other + * init code, already set the width. + * + * The return value is one of: + * PW_8 + * PW_16 + * PW_32 + * PW_64 + * + * The function returns 0 on error. + */ +unsigned int +ppc4xx_get_peripheral_width(unsigned int dmanr) +{ + unsigned int control; + + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk("ppc4xx_get_peripheral_width: bad channel %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + + control = mfdcr(DCRN_DMACR0 + (dmanr * 0x8)); + + return (GET_DMA_PW(control)); +} + +/* + * Clears the channel status bits + */ +int +ppc4xx_clr_dma_status(unsigned int dmanr) +{ + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk(KERN_ERR "ppc4xx_clr_dma_status: bad channel: %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + mtdcr(DCRN_DMASR, ((u32)DMA_CH0_ERR | (u32)DMA_CS0 | (u32)DMA_TS0) >> dmanr); + return DMA_STATUS_GOOD; +} + +#ifdef CONFIG_PPC4xx_EDMA +/* + * Enables the burst on the channel (BTEN bit in the control/count register) + * Note: + * For scatter/gather dma, this function MUST be called before the + * ppc4xx_alloc_dma_handle() func as the chan count register is copied into the + * sgl list and used as each sgl element is added. + */ +int +ppc4xx_enable_burst(unsigned int dmanr) +{ + unsigned int ctc; + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk(KERN_ERR "ppc4xx_enable_burst: bad channel: %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + ctc = mfdcr(DCRN_DMACT0 + (dmanr * 0x8)) | DMA_CTC_BTEN; + mtdcr(DCRN_DMACT0 + (dmanr * 0x8), ctc); + return DMA_STATUS_GOOD; +} +/* + * Disables the burst on the channel (BTEN bit in the control/count register) + * Note: + * For scatter/gather dma, this function MUST be called before the + * ppc4xx_alloc_dma_handle() func as the chan count register is copied into the + * sgl list and used as each sgl element is added. + */ +int +ppc4xx_disable_burst(unsigned int dmanr) +{ + unsigned int ctc; + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk(KERN_ERR "ppc4xx_disable_burst: bad channel: %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + ctc = mfdcr(DCRN_DMACT0 + (dmanr * 0x8)) &~ DMA_CTC_BTEN; + mtdcr(DCRN_DMACT0 + (dmanr * 0x8), ctc); + return DMA_STATUS_GOOD; +} +/* + * Sets the burst size (number of peripheral widths) for the channel + * (BSIZ bits in the control/count register)) + * must be one of: + * DMA_CTC_BSIZ_2 + * DMA_CTC_BSIZ_4 + * DMA_CTC_BSIZ_8 + * DMA_CTC_BSIZ_16 + * Note: + * For scatter/gather dma, this function MUST be called before the + * ppc4xx_alloc_dma_handle() func as the chan count register is copied into the + * sgl list and used as each sgl element is added. + */ +int +ppc4xx_set_burst_size(unsigned int dmanr, unsigned int bsize) +{ + unsigned int ctc; + if (dmanr >= MAX_PPC4xx_DMA_CHANNELS) { + printk(KERN_ERR "ppc4xx_set_burst_size: bad channel: %d\n", dmanr); + return DMA_STATUS_BAD_CHANNEL; + } + ctc = mfdcr(DCRN_DMACT0 + (dmanr * 0x8)) &~ DMA_CTC_BSIZ_MSK; + ctc |= (bsize & DMA_CTC_BSIZ_MSK); + mtdcr(DCRN_DMACT0 + (dmanr * 0x8), ctc); + return DMA_STATUS_GOOD; +} + +EXPORT_SYMBOL(ppc4xx_enable_burst); +EXPORT_SYMBOL(ppc4xx_disable_burst); +EXPORT_SYMBOL(ppc4xx_set_burst_size); +#endif /* CONFIG_PPC4xx_EDMA */ + +EXPORT_SYMBOL(ppc4xx_init_dma_channel); +EXPORT_SYMBOL(ppc4xx_get_channel_config); +EXPORT_SYMBOL(ppc4xx_set_channel_priority); +EXPORT_SYMBOL(ppc4xx_get_peripheral_width); +EXPORT_SYMBOL(dma_channels); +EXPORT_SYMBOL(ppc4xx_set_src_addr); +EXPORT_SYMBOL(ppc4xx_set_dst_addr); +EXPORT_SYMBOL(ppc4xx_set_dma_addr); +EXPORT_SYMBOL(ppc4xx_set_dma_addr2); +EXPORT_SYMBOL(ppc4xx_enable_dma); +EXPORT_SYMBOL(ppc4xx_disable_dma); +EXPORT_SYMBOL(ppc4xx_set_dma_mode); +EXPORT_SYMBOL(ppc4xx_set_dma_count); +EXPORT_SYMBOL(ppc4xx_get_dma_residue); +EXPORT_SYMBOL(ppc4xx_enable_dma_interrupt); +EXPORT_SYMBOL(ppc4xx_disable_dma_interrupt); +EXPORT_SYMBOL(ppc4xx_get_dma_status); +EXPORT_SYMBOL(ppc4xx_clr_dma_status); + diff --git a/drivers/usb/gadget/dwc_otg/ppc4xx_dma.h b/drivers/usb/gadget/dwc_otg/ppc4xx_dma.h new file mode 100644 index 00000000000..c4a4f2806f6 --- /dev/null +++ b/drivers/usb/gadget/dwc_otg/ppc4xx_dma.h @@ -0,0 +1,620 @@ +/* + * include/asm-ppc/ppc4xx_dma.h + * + * IBM PPC4xx DMA engine library + * + * Copyright 2000-2004 MontaVista Software Inc. + * + * Cleaned up a bit more, Matt Porter <mporter@kernel.crashing.org> + * + * Original code by Armin Kuster <akuster@mvista.com> + * and Pete Popov <ppopov@mvista.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. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifdef __KERNEL__ +#ifndef __ASMPPC_PPC4xx_DMA_H +#define __ASMPPC_PPC4xx_DMA_H + +#include <linux/types.h> +#include <asm/mmu.h> + +#ifdef CONFIG_405EX +#define DCRN_DMA0_BASE 0x100 +#define DCRN_DMASR_BASE 0x120 +#endif + +#ifdef CONFIG_460EX || defined(CONFIG_APM82181) +#define DCRN_DMA0_BASE 0x200 +#define DCRN_DMASR_BASE 0x220 +#endif + +#ifndef DCRN_DMA0_BASE +#error DMA register not defined for this PPC4xx variant! +#endif + +#define DCRN_DMACR0 (DCRN_DMA0_BASE + 0x0) /* DMA Channel Control 0 */ +#define DCRN_DMACT0 (DCRN_DMA0_BASE + 0x1) /* DMA Count 0 */ +#define DCRN_DMASAH0 (DCRN_DMA0_BASE + 0x2) /* DMA Src Addr High 0 */ +#define DCRN_DMASA0 (DCRN_DMA0_BASE + 0x3) /* DMA Src Addr Low 0 */ +#define DCRN_DMADAH0 (DCRN_DMA0_BASE + 0x4) /* DMA Dest Addr High 0 */ +#define DCRN_DMADA0 (DCRN_DMA0_BASE + 0x5) /* DMA Dest Addr Low 0 */ +#define DCRN_ASGH0 (DCRN_DMA0_BASE + 0x6) /* DMA SG Desc Addr High 0 */ +#define DCRN_ASG0 (DCRN_DMA0_BASE + 0x7) /* DMA SG Desc Addr Low 0 */ + +#define DCRN_DMASR (DCRN_DMASR_BASE + 0x0) /* DMA Status Register */ +#define DCRN_ASGC (DCRN_DMASR_BASE + 0x3) /* DMA Scatter/Gather Command */ +#define DCRN_SLP (DCRN_DMASR_BASE + 0x5) /* DMA Sleep Register */ +#define DCRN_POL (DCRN_DMASR_BASE + 0x6) /* DMA Polarity Register */ + +#undef DEBUG_4xxDMA + +#define MAX_PPC4xx_DMA_CHANNELS 4 + +#define DMA_CH0 0 +#define DMA_CH1 1 +#define DMA_CH2 2 +#define DMA_CH3 3 + +/* + * Function return status codes + * These values are used to indicate whether or not the function + * call was successful, or a bad/invalid parameter was passed. + */ +#define DMA_STATUS_GOOD 0 +#define DMA_STATUS_BAD_CHANNEL 1 +#define DMA_STATUS_BAD_HANDLE 2 +#define DMA_STATUS_BAD_MODE 3 +#define DMA_STATUS_NULL_POINTER 4 +#define DMA_STATUS_OUT_OF_MEMORY 5 +#define DMA_STATUS_SGL_LIST_EMPTY 6 +#define DMA_STATUS_GENERAL_ERROR 7 +#define DMA_STATUS_CHANNEL_NOTFREE 8 + +#define DMA_CHANNEL_BUSY 0x80000000 + +/* + * These indicate status as returned from the DMA Status Register. + */ +#define DMA_STATUS_NO_ERROR 0 +#define DMA_STATUS_CS 1 /* Count Status */ +#define DMA_STATUS_TS 2 /* Transfer Status */ +#define DMA_STATUS_DMA_ERROR 3 /* DMA Error Occurred */ +#define DMA_STATUS_DMA_BUSY 4 /* The channel is busy */ + + +/* + * DMA Channel Control Registers + */ + +/* The 44x devices have 64bit DMA controllers, where the 405EX/r have 32bit */ +#if defined(CONFIG_44x) +#define PPC4xx_DMA_64BIT +#endif + +/* The 44x and 405EX/r come up big-endian with last bit reserved */ +#if defined(CONFIG_44x) || defined(CONFIG_405EX) || defined(CONFIG_405EXr) +#define DMA_CR_OFFSET 1 +#else +#define DMA_CR_OFFSET 0 +#endif + +#define DMA_CE_ENABLE (1<<31) /* DMA Channel Enable */ +#define SET_DMA_CE_ENABLE(x) (((x)&0x1)<<31) +#define GET_DMA_CE_ENABLE(x) (((x)&DMA_CE_ENABLE)>>31) + +#define DMA_CIE_ENABLE (1<<30) /* DMA Channel Interrupt Enable */ +#define SET_DMA_CIE_ENABLE(x) (((x)&0x1)<<30) +#define GET_DMA_CIE_ENABLE(x) (((x)&DMA_CIE_ENABLE)>>30) + +#define DMA_TD (1<<29) +#define SET_DMA_TD(x) (((x)&0x1)<<29) +#define GET_DMA_TD(x) (((x)&DMA_TD)>>29) + +#define DMA_PL (1<<28) /* Peripheral Location */ +#define SET_DMA_PL(x) (((x)&0x1)<<28) +#define GET_DMA_PL(x) (((x)&DMA_PL)>>28) + +#define EXTERNAL_PERIPHERAL 0 +#define INTERNAL_PERIPHERAL 1 + +#define SET_DMA_PW(x) (((x)&0x3)<<(26-DMA_CR_OFFSET)) /* Peripheral Width */ +#define DMA_PW_MASK SET_DMA_PW(3) +#define PW_8 0 +#define PW_16 1 +#define PW_32 2 +#define PW_64 3 +/* FIXME: Add PW_128 support for 440GP DMA block */ +#define GET_DMA_PW(x) (((x)&DMA_PW_MASK)>>(26-DMA_CR_OFFSET)) + +#define DMA_DAI (1<<(25-DMA_CR_OFFSET)) /* Destination Address Increment */ +#define SET_DMA_DAI(x) (((x)&0x1)<<(25-DMA_CR_OFFSET)) + +#define DMA_SAI (1<<(24-DMA_CR_OFFSET)) /* Source Address Increment */ +#define SET_DMA_SAI(x) (((x)&0x1)<<(24-DMA_CR_OFFSET)) + +#define DMA_BEN (1<<(23-DMA_CR_OFFSET)) /* Buffer Enable */ +#define SET_DMA_BEN(x) (((x)&0x1)<<(23-DMA_CR_OFFSET)) + +#define SET_DMA_TM(x) (((x)&0x3)<<(21-DMA_CR_OFFSET)) /* Transfer Mode */ +#define DMA_TM_MASK SET_DMA_TM(3) +#define TM_PERIPHERAL 0 /* Peripheral */ +#define TM_RESERVED 1 /* Reserved */ +#define TM_S_MM 2 /* Memory to Memory */ +#define TM_D_MM 3 /* Device Paced Memory to Memory */ +#define GET_DMA_TM(x) (((x)&DMA_TM_MASK)>>(21-DMA_CR_OFFSET)) + +#define SET_DMA_PSC(x) (((x)&0x3)<<(19-DMA_CR_OFFSET)) /* Peripheral Setup Cycles */ +#define DMA_PSC_MASK SET_DMA_PSC(3) +#define GET_DMA_PSC(x) (((x)&DMA_PSC_MASK)>>(19-DMA_CR_OFFSET)) + +#define SET_DMA_PWC(x) (((x)&0x3F)<<(13-DMA_CR_OFFSET)) /* Peripheral Wait Cycles */ +#define DMA_PWC_MASK SET_DMA_PWC(0x3F) +#define GET_DMA_PWC(x) (((x)&DMA_PWC_MASK)>>(13-DMA_CR_OFFSET)) + +#define SET_DMA_PHC(x) (((x)&0x7)<<(10-DMA_CR_OFFSET)) /* Peripheral Hold Cycles */ +#define DMA_PHC_MASK SET_DMA_PHC(0x7) +#define GET_DMA_PHC(x) (((x)&DMA_PHC_MASK)>>(10-DMA_CR_OFFSET)) + +#define DMA_ETD_OUTPUT (1<<(9-DMA_CR_OFFSET)) /* EOT pin is a TC output */ +#define SET_DMA_ETD(x) (((x)&0x1)<<(9-DMA_CR_OFFSET)) + +#define DMA_TCE_ENABLE (1<<(8-DMA_CR_OFFSET)) +#define SET_DMA_TCE(x) (((x)&0x1)<<(8-DMA_CR_OFFSET)) + +#define DMA_DEC (1<<(2)) /* Address Decrement */ +#define SET_DMA_DEC(x) (((x)&0x1)<<2) +#define GET_DMA_DEC(x) (((x)&DMA_DEC)>>2) + + +/* + * Transfer Modes + * These modes are defined in a way that makes it possible to + * simply "or" in the value in the control register. + */ + +#define DMA_MODE_MM (SET_DMA_TM(TM_S_MM)) /* memory to memory */ + + /* Device-paced memory to memory, */ + /* device is at source address */ +#define DMA_MODE_MM_DEVATSRC (DMA_TD | SET_DMA_TM(TM_D_MM)) + + /* Device-paced memory to memory, */ + /* device is at destination address */ +#define DMA_MODE_MM_DEVATDST (SET_DMA_TM(TM_D_MM)) + +/* 405gp/440gp */ +#define SET_DMA_PREFETCH(x) (((x)&0x3)<<(4-DMA_CR_OFFSET)) /* Memory Read Prefetch */ +#define DMA_PREFETCH_MASK SET_DMA_PREFETCH(3) +#define PREFETCH_1 0 /* Prefetch 1 Double Word */ +#define PREFETCH_2 1 +#define PREFETCH_4 2 +#define GET_DMA_PREFETCH(x) (((x)&DMA_PREFETCH_MASK)>>(4-DMA_CR_OFFSET)) + +#define DMA_PCE (1<<(3-DMA_CR_OFFSET)) /* Parity Check Enable */ +#define SET_DMA_PCE(x) (((x)&0x1)<<(3-DMA_CR_OFFSET)) +#define GET_DMA_PCE(x) (((x)&DMA_PCE)>>(3-DMA_CR_OFFSET)) + +/* stb3x */ + +#define DMA_ECE_ENABLE (1<<5) +#define SET_DMA_ECE(x) (((x)&0x1)<<5) +#define GET_DMA_ECE(x) (((x)&DMA_ECE_ENABLE)>>5) + +#define DMA_TCD_DISABLE (1<<4) +#define SET_DMA_TCD(x) (((x)&0x1)<<4) +#define GET_DMA_TCD(x) (((x)&DMA_TCD_DISABLE)>>4) + +typedef uint32_t sgl_handle_t; + +#ifdef CONFIG_PPC4xx_EDMA + +#define SGL_LIST_SIZE 4096 +#define DMA_PPC4xx_SIZE SGL_LIST_SIZE + +#define SET_DMA_PRIORITY(x) (((x)&0x3)<<(6-DMA_CR_OFFSET)) /* DMA Channel Priority */ +#define DMA_PRIORITY_MASK SET_DMA_PRIORITY(3) +#define PRIORITY_LOW 0 +#define PRIORITY_MID_LOW 1 +#define PRIORITY_MID_HIGH 2 +#define PRIORITY_HIGH 3 +#define GET_DMA_PRIORITY(x) (((x)&DMA_PRIORITY_MASK)>>(6-DMA_CR_OFFSET)) + +/* + * DMA Polarity Configuration Register + */ +#define DMAReq_ActiveLow(chan) (1<<(31-(chan*3))) +#define DMAAck_ActiveLow(chan) (1<<(30-(chan*3))) +#define EOT_ActiveLow(chan) (1<<(29-(chan*3))) /* End of Transfer */ + +/* + * DMA Sleep Mode Register + */ +#define SLEEP_MODE_ENABLE (1<<21) + +/* + * DMA Status Register + */ +#define DMA_CS0 (1<<31) /* Terminal Count has been reached */ +#define DMA_CS1 (1<<30) +#define DMA_CS2 (1<<29) +#define DMA_CS3 (1<<28) + +#define DMA_TS0 (1<<27) /* End of Transfer has been requested */ +#define DMA_TS1 (1<<26) +#define DMA_TS2 (1<<25) +#define DMA_TS3 (1<<24) + +#define DMA_CH0_ERR (1<<23) /* DMA Chanel 0 Error */ +#define DMA_CH1_ERR (1<<22) +#define DMA_CH2_ERR (1<<21) +#define DMA_CH3_ERR (1<<20) + +#define DMA_IN_DMA_REQ0 (1<<19) /* Internal DMA Request is pending */ +#define DMA_IN_DMA_REQ1 (1<<18) +#define DMA_IN_DMA_REQ2 (1<<17) +#define DMA_IN_DMA_REQ3 (1<<16) + +#define DMA_EXT_DMA_REQ0 (1<<15) /* External DMA Request is pending */ +#define DMA_EXT_DMA_REQ1 (1<<14) +#define DMA_EXT_DMA_REQ2 (1<<13) +#define DMA_EXT_DMA_REQ3 (1<<12) + +#define DMA_CH0_BUSY (1<<11) /* DMA Channel 0 Busy */ +#define DMA_CH1_BUSY (1<<10) +#define DMA_CH2_BUSY (1<<9) +#define DMA_CH3_BUSY (1<<8) + +#define DMA_SG0 (1<<7) /* DMA Channel 0 Scatter/Gather in progress */ +#define DMA_SG1 (1<<6) +#define DMA_SG2 (1<<5) +#define DMA_SG3 (1<<4) + +/* DMA Channel Count Register */ +#define DMA_CTC_TCIE (1<<29) /* Terminal Count Interrupt Enable */ +#define DMA_CTC_ETIE (1<<28) /* EOT Interupt Enable */ +#define DMA_CTC_EIE (1<<27) /* Error Interrupt Enable */ +#define DMA_CTC_BTEN (1<<23) /* Burst Enable/Disable bit */ +#define DMA_CTC_BSIZ_MSK (3<<21) /* Mask of the Burst size bits */ +#define DMA_CTC_BSIZ_2 (0) +#define DMA_CTC_BSIZ_4 (1<<21) +#define DMA_CTC_BSIZ_8 (2<<21) +#define DMA_CTC_BSIZ_16 (3<<21) +#define DMA_CTC_TC_MASK 0xFFFFF + +/* + * DMA SG Command Register + */ +#define SSG_ENABLE(chan) (1<<(31-chan)) /* Start Scatter Gather */ +#define SSG_MASK_ENABLE(chan) (1<<(15-chan)) /* Enable writing to SSG0 bit */ + +/* + * DMA Scatter/Gather Descriptor Bit fields + */ +#define SG_LINK (1<<31) /* Link */ +#define SG_TCI_ENABLE (1<<29) /* Enable Terminal Count Interrupt */ +#define SG_ETI_ENABLE (1<<28) /* Enable End of Transfer Interrupt */ +#define SG_ERI_ENABLE (1<<27) /* Enable Error Interrupt */ +#define SG_COUNT_MASK 0xFFFF /* Count Field */ + +#define SET_DMA_CONTROL \ + (SET_DMA_CIE_ENABLE(p_init->int_enable) | /* interrupt enable */ \ + SET_DMA_BEN(p_init->buffer_enable) | /* buffer enable */\ + SET_DMA_ETD(p_init->etd_output) | /* end of transfer pin */ \ + SET_DMA_TCE(p_init->tce_enable) | /* terminal count enable */ \ + SET_DMA_PL(p_init->pl) | /* peripheral location */ \ + SET_DMA_DAI(p_init->dai) | /* dest addr increment */ \ + SET_DMA_SAI(p_init->sai) | /* src addr increment */ \ + SET_DMA_PRIORITY(p_init->cp) | /* channel priority */ \ + SET_DMA_PW(p_init->pwidth) | /* peripheral/bus width */ \ + SET_DMA_PSC(p_init->psc) | /* peripheral setup cycles */ \ + SET_DMA_PWC(p_init->pwc) | /* peripheral wait cycles */ \ + SET_DMA_PHC(p_init->phc) | /* peripheral hold cycles */ \ + SET_DMA_PREFETCH(p_init->pf) /* read prefetch */) + +#define GET_DMA_POLARITY(chan) (DMAReq_ActiveLow(chan) | DMAAck_ActiveLow(chan) | EOT_ActiveLow(chan)) + +#elif defined(CONFIG_STB03xxx) /* stb03xxx */ + +#define DMA_PPC4xx_SIZE 4096 + +/* + * DMA Status Register + */ + +#define SET_DMA_PRIORITY(x) (((x)&0x00800001)) /* DMA Channel Priority */ +#define DMA_PRIORITY_MASK 0x00800001 +#define PRIORITY_LOW 0x00000000 +#define PRIORITY_MID_LOW 0x00000001 +#define PRIORITY_MID_HIGH 0x00800000 +#define PRIORITY_HIGH 0x00800001 +#define GET_DMA_PRIORITY(x) (((((x)&DMA_PRIORITY_MASK) &0x00800000) >> 22 ) | (((x)&DMA_PRIORITY_MASK) &0x00000001)) + +#define DMA_CS0 (1<<31) /* Terminal Count has been reached */ +#define DMA_CS1 (1<<30) +#define DMA_CS2 (1<<29) +#define DMA_CS3 (1<<28) + +#define DMA_TS0 (1<<27) /* End of Transfer has been requested */ +#define DMA_TS1 (1<<26) +#define DMA_TS2 (1<<25) +#define DMA_TS3 (1<<24) + +#define DMA_CH0_ERR (1<<23) /* DMA Chanel 0 Error */ +#define DMA_CH1_ERR (1<<22) +#define DMA_CH2_ERR (1<<21) +#define DMA_CH3_ERR (1<<20) + +#define DMA_CT0 (1<<19) /* Chained transfere */ + +#define DMA_IN_DMA_REQ0 (1<<18) /* Internal DMA Request is pending */ +#define DMA_IN_DMA_REQ1 (1<<17) +#define DMA_IN_DMA_REQ2 (1<<16) +#define DMA_IN_DMA_REQ3 (1<<15) + +#define DMA_EXT_DMA_REQ0 (1<<14) /* External DMA Request is pending */ +#define DMA_EXT_DMA_REQ1 (1<<13) +#define DMA_EXT_DMA_REQ2 (1<<12) +#define DMA_EXT_DMA_REQ3 (1<<11) + +#define DMA_CH0_BUSY (1<<10) /* DMA Channel 0 Busy */ +#define DMA_CH1_BUSY (1<<9) +#define DMA_CH2_BUSY (1<<8) +#define DMA_CH3_BUSY (1<<7) + +#define DMA_CT1 (1<<6) /* Chained transfere */ +#define DMA_CT2 (1<<5) +#define DMA_CT3 (1<<4) + +#define DMA_CH_ENABLE (1<<7) +#define SET_DMA_CH(x) (((x)&0x1)<<7) +#define GET_DMA_CH(x) (((x)&DMA_CH_ENABLE)>>7) + +/* STBx25xxx dma unique */ +/* enable device port on a dma channel + * example ext 0 on dma 1 + */ + +#define SSP0_RECV 15 +#define SSP0_XMIT 14 +#define EXT_DMA_0 12 +#define SC1_XMIT 11 +#define SC1_RECV 10 +#define EXT_DMA_2 9 +#define EXT_DMA_3 8 +#define SERIAL2_XMIT 7 +#define SERIAL2_RECV 6 +#define SC0_XMIT 5 +#define SC0_RECV 4 +#define SERIAL1_XMIT 3 +#define SERIAL1_RECV 2 +#define SERIAL0_XMIT 1 +#define SERIAL0_RECV 0 + +#define DMA_CHAN_0 1 +#define DMA_CHAN_1 2 +#define DMA_CHAN_2 3 +#define DMA_CHAN_3 4 + +/* end STBx25xx */ + +/* + * Bit 30 must be one for Redwoods, otherwise transfers may receive errors. + */ +#define DMA_CR_MB0 0x2 + +#define SET_DMA_CONTROL \ + (SET_DMA_CIE_ENABLE(p_init->int_enable) | /* interrupt enable */ \ + SET_DMA_ETD(p_init->etd_output) | /* end of transfer pin */ \ + SET_DMA_TCE(p_init->tce_enable) | /* terminal count enable */ \ + SET_DMA_PL(p_init->pl) | /* peripheral location */ \ + SET_DMA_DAI(p_init->dai) | /* dest addr increment */ \ + SET_DMA_SAI(p_init->sai) | /* src addr increment */ \ + SET_DMA_PRIORITY(p_init->cp) | /* channel priority */ \ + SET_DMA_PW(p_init->pwidth) | /* peripheral/bus width */ \ + SET_DMA_PSC(p_init->psc) | /* peripheral setup cycles */ \ + SET_DMA_PWC(p_init->pwc) | /* peripheral wait cycles */ \ + SET_DMA_PHC(p_init->phc) | /* peripheral hold cycles */ \ + SET_DMA_TCD(p_init->tcd_disable) | /* TC chain mode disable */ \ + SET_DMA_ECE(p_init->ece_enable) | /* ECE chanin mode enable */ \ + SET_DMA_CH(p_init->ch_enable) | /* Chain enable */ \ + DMA_CR_MB0 /* must be one */) + +#define GET_DMA_POLARITY(chan) chan + +#endif + +typedef struct { + unsigned short in_use; /* set when channel is being used, clr when + * available. + */ + /* + * Valid polarity settings: + * DMAReq_ActiveLow(n) + * DMAAck_ActiveLow(n) + * EOT_ActiveLow(n) + * + * n is 0 to max dma chans + */ + unsigned int polarity; + + char buffer_enable; /* Boolean: buffer enable */ + char tce_enable; /* Boolean: terminal count enable */ + char etd_output; /* Boolean: eot pin is a tc output */ + char pce; /* Boolean: parity check enable */ + + /* + * Peripheral location: + * INTERNAL_PERIPHERAL (UART0 on the 405GP) + * EXTERNAL_PERIPHERAL + */ + char pl; /* internal/external peripheral */ + + /* + * Valid pwidth settings: + * PW_8 + * PW_16 + * PW_32 + * PW_64 + */ + unsigned int pwidth; + + char dai; /* Boolean: dst address increment */ + char sai; /* Boolean: src address increment */ + + /* + * Valid psc settings: 0-3 + */ + unsigned int psc; /* Peripheral Setup Cycles */ + + /* + * Valid pwc settings: + * 0-63 + */ + unsigned int pwc; /* Peripheral Wait Cycles */ + + /* + * Valid phc settings: + * 0-7 + */ + unsigned int phc; /* Peripheral Hold Cycles */ + + /* + * Valid cp (channel priority) settings: + * PRIORITY_LOW + * PRIORITY_MID_LOW + * PRIORITY_MID_HIGH + * PRIORITY_HIGH + */ + unsigned int cp; /* channel priority */ + + /* + * Valid pf (memory read prefetch) settings: + * + * PREFETCH_1 + * PREFETCH_2 + * PREFETCH_4 + */ + unsigned int pf; /* memory read prefetch */ + + /* + * Boolean: channel interrupt enable + * NOTE: for sgl transfers, only the last descriptor will be setup to + * interrupt. + */ + char int_enable; + + char shift; /* easy access to byte_count shift, based on */ + /* the width of the channel */ + + uint32_t control; /* channel control word */ + + /* These variabled are used ONLY in single dma transfers */ + unsigned int mode; /* transfer mode */ + phys_addr_t addr; + char ce; /* channel enable */ +#ifdef CONFIG_STB03xxx + char ch_enable; + char tcd_disable; + char ece_enable; + char td; /* transfer direction */ +#endif + + char int_on_final_sg;/* for scatter/gather - only interrupt on last sg */ +} ppc_dma_ch_t; + +/* + * PPC44x DMA implementations have a slightly different + * descriptor layout. Probably moved about due to the + * change to 64-bit addresses and link pointer. I don't + * know why they didn't just leave control_count after + * the dst_addr. + */ +#ifdef PPC4xx_DMA_64BIT +typedef struct { + uint32_t control; + uint32_t control_count; + phys_addr_t src_addr; + phys_addr_t dst_addr; + phys_addr_t next; +} ppc_sgl_t; +#else +typedef struct { + uint32_t control; + phys_addr_t src_addr; + phys_addr_t dst_addr; + uint32_t control_count; + uint32_t next; +} ppc_sgl_t; +#endif + +typedef struct { + unsigned int dmanr; + uint32_t control; /* channel ctrl word; loaded from each descrptr */ + uint32_t sgl_control; /* LK, TCI, ETI, and ERI bits in sgl descriptor */ + dma_addr_t dma_addr; /* dma (physical) address of this list */ + ppc_sgl_t *phead; + dma_addr_t phead_dma; + ppc_sgl_t *ptail; + dma_addr_t ptail_dma; +} sgl_list_info_t; + +typedef struct { + phys_addr_t *src_addr; + phys_addr_t *dst_addr; + phys_addr_t dma_src_addr; + phys_addr_t dma_dst_addr; +} pci_alloc_desc_t; + +extern ppc_dma_ch_t dma_channels[]; + +/* + * The DMA API are in ppc4xx_dma.c and ppc4xx_sgdma.c + */ +extern int ppc4xx_init_dma_channel(unsigned int, ppc_dma_ch_t *); +extern int ppc4xx_get_channel_config(unsigned int, ppc_dma_ch_t *); +extern int ppc4xx_set_channel_priority(unsigned int, unsigned int); +extern unsigned int ppc4xx_get_peripheral_width(unsigned int); +extern void ppc4xx_set_sg_addr(int, phys_addr_t); +extern int ppc4xx_add_dma_sgl(sgl_handle_t, phys_addr_t, phys_addr_t, unsigned int); +extern void ppc4xx_enable_dma_sgl(sgl_handle_t); +extern void ppc4xx_disable_dma_sgl(sgl_handle_t); +extern int ppc4xx_get_dma_sgl_residue(sgl_handle_t, phys_addr_t *, phys_addr_t *); +extern int ppc4xx_delete_dma_sgl_element(sgl_handle_t, phys_addr_t *, phys_addr_t *); +extern int ppc4xx_alloc_dma_handle(sgl_handle_t *, unsigned int, unsigned int); +extern void ppc4xx_free_dma_handle(sgl_handle_t); +extern int ppc4xx_get_dma_status(void); +extern int ppc4xx_enable_burst(unsigned int); +extern int ppc4xx_disable_burst(unsigned int); +extern int ppc4xx_set_burst_size(unsigned int, unsigned int); +extern void ppc4xx_set_src_addr(int dmanr, phys_addr_t src_addr); +extern void ppc4xx_set_dst_addr(int dmanr, phys_addr_t dst_addr); +extern void ppc4xx_enable_dma(unsigned int dmanr); +extern void ppc4xx_disable_dma(unsigned int dmanr); +extern void ppc4xx_set_dma_count(unsigned int dmanr, unsigned int count); +extern int ppc4xx_get_dma_residue(unsigned int dmanr); +extern void ppc4xx_set_dma_addr2(unsigned int dmanr, phys_addr_t src_dma_addr, + phys_addr_t dst_dma_addr); +extern int ppc4xx_enable_dma_interrupt(unsigned int dmanr); +extern int ppc4xx_disable_dma_interrupt(unsigned int dmanr); +extern int ppc4xx_clr_dma_status(unsigned int dmanr); +extern int ppc4xx_map_dma_port(unsigned int dmanr, unsigned int ocp_dma,short dma_chan); +extern int ppc4xx_disable_dma_port(unsigned int dmanr, unsigned int ocp_dma,short dma_chan); +extern int ppc4xx_set_dma_mode(unsigned int dmanr, unsigned int mode); + +/* These are in kernel/dma.c: */ + +/* reserve a DMA channel */ +extern int request_dma(unsigned int dmanr, const char *device_id); +/* release it again */ +extern void free_dma(unsigned int dmanr); +#endif +#endif /* __KERNEL__ */ |