--- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -114,6 +114,8 @@ source "drivers/usb/wusbcore/Kconfig" source "drivers/usb/host/Kconfig" +source "drivers/usb/dwc_otg/Kconfig" + source "drivers/usb/musb/Kconfig" source "drivers/usb/class/Kconfig" --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -27,6 +27,8 @@ obj-$(CONFIG_USB_C67X00_HCD) += c67x00/ obj-$(CONFIG_USB_WUSB) += wusbcore/ +obj-$(CONFIG_DWC_OTG) += dwc_otg/ + obj-$(CONFIG_USB_ACM) += class/ obj-$(CONFIG_USB_PRINTER) += class/ obj-$(CONFIG_USB_WDM) += class/ --- /dev/null +++ b/drivers/usb/dwc_otg/Kconfig @@ -0,0 +1,37 @@ +config DWC_OTG + tristate "Synopsis DWC_OTG support" + depends on USB + help + This driver supports Synopsis DWC_OTG IP core + embebbed on many SOCs (ralink, infineon, etc) + +choice + prompt "USB Operation Mode" + depends on DWC_OTG + default DWC_OTG_HOST_ONLY + +config DWC_OTG_HOST_ONLY + bool "HOST ONLY MODE" + depends on DWC_OTG + +#config DWC_OTG_DEVICE_ONLY +# bool "DEVICE ONLY MODE" +# depends on DWC_OTG +endchoice + +choice + prompt "Platform" + depends on DWC_OTG + default DWC_OTG_LANTIQ + +config DWC_OTG_LANTIQ + bool "Lantiq" + depends on LANTIQ + help + Danube USB Host Controller + platform support +endchoice + +config DWC_OTG_DEBUG + bool "Enable debug mode" + depends on DWC_OTG --- /dev/null +++ b/drivers/usb/dwc_otg/Makefile @@ -0,0 +1,39 @@ +# +# Makefile for DWC_otg Highspeed USB controller driver +# + +ifeq ($(CONFIG_DWC_OTG_DEBUG),y) +EXTRA_CFLAGS += -DDEBUG +endif + +# Use one of the following flags to compile the software in host-only or +# device-only mode based on the configuration selected by the user +ifeq ($(CONFIG_DWC_OTG_HOST_ONLY),y) + EXTRA_CFLAGS += -DDWC_OTG_HOST_ONLY -DDWC_HOST_ONLY + EXTRA_CFLAGS += -DDWC_OTG_EN_ISOC -DDWC_EN_ISOC +else ifeq ($(CONFIG_DWC_OTG_DEVICE_ONLY),y) + EXTRA_CFLAGS += -DDWC_OTG_DEVICE_ONLY +else + EXTRA_CFLAGS += -DDWC_OTG_MODE +endif + +# EXTRA_CFLAGS += -DDWC_HS_ELECT_TST +# EXTRA_CFLAGS += -DDWC_OTG_EXT_CHG_PUMP + +ifeq ($(CONFIG_DWC_OTG_LANTIQ),y) + EXTRA_CFLAGS += -Dlinux -D__LINUX__ -DDWC_OTG_IFX -DDWC_OTG_HOST_ONLY -DDWC_HOST_ONLY -D__KERNEL__ +endif +ifeq ($(CONFIG_DWC_OTG_LANTIQ),m) + EXTRA_CFLAGS += -Dlinux -D__LINUX__ -DDWC_OTG_IFX -DDWC_HOST_ONLY -DMODULE -D__KERNEL__ -DDEBUG +endif + +obj-$(CONFIG_DWC_OTG) := dwc_otg.o +dwc_otg-objs := dwc_otg_hcd.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o +#dwc_otg-objs += dwc_otg_pcd.o dwc_otg_pcd_intr.o +dwc_otg-objs += dwc_otg_attr.o +dwc_otg-objs += dwc_otg_cil.o dwc_otg_cil_intr.o +dwc_otg-objs += dwc_otg_ifx.o +dwc_otg-objs += dwc_otg_driver.o + +#obj-$(CONFIG_DWC_OTG_IFX) := dwc_otg_ifx.o +#dwc_otg_ifx-objs := dwc_otg_ifx.o --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_attr.c @@ -0,0 +1,802 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_attr.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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 "dwc_otg_plat.h" +#include "dwc_otg_attr.h" +#include "dwc_otg_driver.h" +// #include "dwc_otg_pcd.h" +#include "dwc_otg_hcd.h" + +// 20070316, winder added. +#ifndef SZ_256K +#define SZ_256K 0x00040000 +#endif + +/* + * 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 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 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 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 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) +{ +#ifdef DEBUG + 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); + } +#endif + + 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 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 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 retval; + + retval = device_create_file(_dev, &dev_attr_regoffset); + retval += device_create_file(_dev, &dev_attr_regvalue); + retval += device_create_file(_dev, &dev_attr_mode); + retval += device_create_file(_dev, &dev_attr_hnpcapable); + retval += device_create_file(_dev, &dev_attr_srpcapable); + retval += device_create_file(_dev, &dev_attr_hnp); + retval += device_create_file(_dev, &dev_attr_srp); + retval += device_create_file(_dev, &dev_attr_buspower); + retval += device_create_file(_dev, &dev_attr_bussuspend); + retval += device_create_file(_dev, &dev_attr_busconnected); + retval += device_create_file(_dev, &dev_attr_gotgctl); + retval += device_create_file(_dev, &dev_attr_gusbcfg); + retval += device_create_file(_dev, &dev_attr_grxfsiz); + retval += device_create_file(_dev, &dev_attr_gnptxfsiz); + retval += device_create_file(_dev, &dev_attr_gpvndctl); + retval += device_create_file(_dev, &dev_attr_ggpio); + retval += device_create_file(_dev, &dev_attr_guid); + retval += device_create_file(_dev, &dev_attr_gsnpsid); + retval += device_create_file(_dev, &dev_attr_devspeed); + retval += device_create_file(_dev, &dev_attr_enumspeed); + retval += device_create_file(_dev, &dev_attr_hptxfsiz); + retval += device_create_file(_dev, &dev_attr_hprt0); + retval += device_create_file(_dev, &dev_attr_remote_wakeup); + retval += device_create_file(_dev, &dev_attr_regdump); + retval += device_create_file(_dev, &dev_attr_hcddump); + retval += device_create_file(_dev, &dev_attr_hcd_frrem); + retval += device_create_file(_dev, &dev_attr_rd_reg_test); + retval += device_create_file(_dev, &dev_attr_wr_reg_test); + + if(retval != 0) + { + DWC_PRINT("cannot create sysfs device files.\n"); + // DWC_PRINT("killing own sysfs device files!\n"); + dwc_otg_attr_remove(_dev); + } +} + +/** + * 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); +} --- /dev/null +++ b/drivers/usb/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: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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 --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_cil.c @@ -0,0 +1,3025 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $Change: 631780 $ + * + * 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 DEBUG +#include <linux/jiffies.h> +#endif + +#include "dwc_otg_plat.h" + +#include "dwc_otg_regs.h" +#include "dwc_otg_cil.h" + +/** + * 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 + //dev_if->num_eps = MAX_EPS_CHANNELS; + //dev_if->num_perio_eps = 0; + + 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]); + } // for loop. + + 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); + 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); + 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) +{ + dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs; + dwc_otg_dev_if_t *dev_if = _core_if->dev_if; + int i = 0; + 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 */ + //usbcfg.b.ulpi_ext_vbus_drv = 1; + //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; + + /* 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. */ +#if 0 + dev_if->num_eps = _core_if->hwcfg2.b.num_dev_ep; + dev_if->num_perio_eps = _core_if->hwcfg4.b.num_dev_perio_in_ep; +#else + dev_if->num_in_eps = calc_num_in_eps(_core_if); + dev_if->num_out_eps = calc_num_out_eps(_core_if); +#endif + 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"); + + DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n",_core_if->hwcfg4.b.num_dev_perio_in_ep); + 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. */ + usbcfg.b.ulpi_utmi_sel = _core_if->core_params->phy_type; + if (usbcfg.b.ulpi_utmi_sel == 2) { // winder + 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"); + //ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR; + ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR4; + _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 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.epmismatch = 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? */ + intr_mask.b.isooutdrop = 1; + intr_mask.b.eopframe = 1; + intr_mask.b.incomplisoin = 1; + intr_mask.b.incomplisoout = 1; + + 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) +{ + 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 }; + int i; + 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->in_ep_regs[i]->dieptsiz, 0); + dwc_write_reg32( &dev_if->out_ep_regs[i]->doeptsiz, 0); + //dwc_write_reg32( &dev_if->in_ep_regs[i]->diepdma, 0); + dwc_write_reg32( &dev_if->out_ep_regs[i]->doepdma, 0); + //dwc_write_reg32( &dev_if->in_ep_regs[i]->diepint, 0xFF); + 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); + //dwc_modify_reg32(&global_regs->gintmsk, 0, intr_mask.d32); + 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 + +/** + * 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); + } + } + + 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 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 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 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 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) { +#ifdef DEBUG +if(((uint32_t)_hc->xfer_buff)%4) +printk("dwc_otg_hc_start_transfer _hc->xfer_buff not 4 byte alignment\n"); +#endif + 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 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 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); +} + +/* + * 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) +{ + uint32_t i; + 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]; + + 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; + + if ((((unsigned long)data_buff) & 0x3) == 0) { + /* xfer_buff is DWORD aligned. */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_reg32(data_fifo, *data_buff); + } + } else { + /* xfer_buff is not DWORD aligned. */ + for (i = 0; i < dword_count; i++, data_buff++) { + dwc_write_reg32(data_fifo, get_unaligned(data_buff)); + } + } + + _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_reg32(_core_if->data_fifo[0]); + _dest[1] = dwc_read_reg32(_core_if->data_fifo[0]); + //_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); + } else {/* OUT endpoint */ + 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 DEBUG + DWC_PRINT("TX Queue Full (0x%0x)\n", gtxstatus.d32); +#endif + //return; + MDELAY(100); //james + } + + 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) + */ + 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) { +#if 1 // winder + dma_cache_wback_inv((unsigned long) _ep->xfer_buff, _ep->xfer_len); // winder + dwc_write_reg32 (&(in_regs->diepdma), + CPHYSADDR((uint32_t)_ep->xfer_buff)); // winder +#else + dwc_write_reg32 (&(in_regs->diepdma), + (uint32_t)_ep->dma_addr); +#endif + } 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) { +#if 1 // winder + dwc_write_reg32 (&(out_regs->doepdma), + CPHYSADDR((uint32_t)_ep->xfer_buff)); // winder +#else + dwc_write_reg32 (&(out_regs->doepdma), + (uint32_t)_ep->dma_addr); +#endif + } + + 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 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; + MDELAY(100); //james + } + + 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), + CPHYSADDR((uint32_t)_ep->dma_addr)); // winder + } + + /* 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 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 */ + + uint32_t i; + uint32_t byte_count; + uint32_t dword_count; + uint32_t *fifo; + uint32_t *data_buff = (uint32_t *)_ep->xfer_buff; + + //DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, _core_if, _ep); + if (_ep->xfer_count >= _ep->xfer_len) { + DWC_WARN("%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 + if (_ep->type == DWC_OTG_EP_TYPE_ISOC) { + /**@todo NGS Where are the Periodic Tx FIFO addresses + * intialized? What should this be? */ + fifo = _core_if->data_fifo[_ep->tx_fifo_num]; + } else { + 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) { + for (i=0; i<dword_count; i++, data_buff++) { + dwc_write_reg32( fifo, *data_buff ); + } + } + + _ep->xfer_count += byte_count; + _ep->xfer_buff += byte_count; +#if 1 // winder, why do we need this?? + _ep->dma_addr += byte_count; +#endif +} + +/** + * 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) +{ + int i; + int word_count = (_bytes + 3) / 4; + + volatile uint32_t *fifo = _core_if->data_fifo[0]; + uint32_t *data_buff = (uint32_t *)_dest; + + /** + * @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), "%s(%p,%p,%d)\n", __func__, + _core_if, _dest, _bytes); + + for (i=0; i<word_count; i++, data_buff++) { + *data_buff = dwc_read_reg32(fifo); + } + + return; +} + + +#ifdef DEBUG +/** + * 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\n"); + 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)); + } + +} +#endif + +/** + * 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; + } + } 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 %x\n", __func__, + greset.d32, greset.b.ahbidle); + return; + } + } while (greset.b.ahbidle == 0); + +// winder add. +#if 1 + /* Note: Actually, I don't exactly why we need to put delay here. */ + MDELAY(100); +#endif + /* Core Soft Reset */ + count = 0; + greset.b.csftrst = 1; + dwc_write_reg32( &global_regs->grstctl, greset.d32 ); +// winder add. +#if 1 + /* Note: Actually, I don't exactly why we need to put delay here. */ + MDELAY(100); +#endif + 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; +} + --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_cil.h @@ -0,0 +1,911 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil.h $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $Change: 631780 $ + * + * 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 "dwc_otg_plat.h" + +#include "dwc_otg_regs.h" +#ifdef DEBUG +#include "linux/timer.h" +#endif + +/* the OTG capabilities. */ +#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 +/* the maximum speed of operation in host and device mode. */ +#define DWC_SPEED_PARAM_HIGH 0 +#define DWC_SPEED_PARAM_FULL 1 +/* the PHY clock rate in low power mode when connected to a + * Low Speed device in host mode. */ +#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0 +#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1 +/* the type of PHY interface to use. */ +#define DWC_PHY_TYPE_PARAM_FS 0 +#define DWC_PHY_TYPE_PARAM_UTMI 1 +#define DWC_PHY_TYPE_PARAM_ULPI 2 +/* whether to use the internal or external supply to + * drive the vbus with a ULPI phy. */ +#define DWC_PHY_ULPI_INTERNAL_VBUS 0 +#define DWC_PHY_ULPI_EXTERNAL_VBUS 1 +/* EP type. */ + +/** + * @file + * This file contains the interface to the Core Interface Layer. + */ + +/** + * 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; + + /** @} */ +} 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 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 + +/** + * 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 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]; + +#if 1 // winder + uint32_t hfnum_7_samples; + uint32_t hfnum_7_frrem_accum; + uint32_t hfnum_0_samples; + uint32_t hfnum_0_frrem_accum; + uint32_t hfnum_other_samples; + uint32_t hfnum_other_frrem_accum; +#else + 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 */ +#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 ); + +#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 --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_cil_ifx.h @@ -0,0 +1,58 @@ +/****************************************************************************** +** +** FILE NAME : dwc_otg_cil_ifx.h +** PROJECT : Twinpass/Danube +** MODULES : DWC OTG USB +** +** DATE : 07 Sep. 2007 +** AUTHOR : Sung Winder +** DESCRIPTION : Default param value. +** COPYRIGHT : Copyright (c) 2007 +** Infineon Technologies AG +** 2F, No.2, Li-Hsin Rd., Hsinchu Science Park, +** Hsin-chu City, 300 Taiwan. +** +** 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. +** +** HISTORY +** $Date $Author $Comment +** 12 April 2007 Sung Winder Initiate Version +*******************************************************************************/ +#if !defined(__DWC_OTG_CIL_IFX_H__) +#define __DWC_OTG_CIL_IFX_H__ + +/* ================ Default param value ================== */ +#define dwc_param_opt_default 1 +#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE +#define dwc_param_dma_enable_default 1 +#define dwc_param_dma_burst_size_default 32 +#define dwc_param_speed_default DWC_SPEED_PARAM_HIGH +#define dwc_param_host_support_fs_ls_low_power_default 0 +#define dwc_param_host_ls_low_power_phy_clk_default DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ +#define dwc_param_enable_dynamic_fifo_default 1 +#define dwc_param_data_fifo_size_default 2048 +#define dwc_param_dev_rx_fifo_size_default 1024 +#define dwc_param_dev_nperio_tx_fifo_size_default 1024 +#define dwc_param_dev_perio_tx_fifo_size_default 768 +#define dwc_param_host_rx_fifo_size_default 640 +#define dwc_param_host_nperio_tx_fifo_size_default 640 +#define dwc_param_host_perio_tx_fifo_size_default 768 +#define dwc_param_max_transfer_size_default 65535 +#define dwc_param_max_packet_count_default 511 +#define dwc_param_host_channels_default 16 +#define dwc_param_dev_endpoints_default 6 +#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI +#define dwc_param_phy_utmi_width_default 16 +#define dwc_param_phy_ulpi_ddr_default 0 +#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS +#define dwc_param_i2c_enable_default 0 +#define dwc_param_ulpi_fs_ls_default 0 +#define dwc_param_ts_dline_default 0 + +/* ======================================================= */ + +#endif // __DWC_OTG_CIL_IFX_H__ + --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_cil_intr.c @@ -0,0 +1,708 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil_intr.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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 "dwc_otg_plat.h" +#include "dwc_otg_regs.h" +#include "dwc_otg_cil.h" + +#ifdef DEBUG +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"))))); +} +#endif + +/** 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 ) +{ +#ifndef DWC_HOST_ONLY // winder + hprt0_data_t hprt0; +#endif + gintsts_data_t gintsts; + +#ifndef DWC_HOST_ONLY + 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; + + 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 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 +/* Without OTG, we should use the disconnect function!? winder added.*/ +#if 1 // NO OTG, so host only!! + 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; + + //805141:<IFTW-fchang>.removed 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 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; +} --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_driver.c @@ -0,0 +1,1274 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $Change: 631780 $ + * + * 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_init function is called. When the module is + * removed (using rmmod), the dwc_otg_cleanup function is called. + * + * This module also defines a data structure for the dwc_otg_driver, which is + * used in conjunction with the standard ARM lm_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/gpio.h> + +#include <linux/device.h> +#include <linux/platform_device.h> + +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/stat.h> /* permission constants */ +#include <linux/irq.h> +#include <asm/io.h> + +#include "dwc_otg_plat.h" +#include "dwc_otg_attr.h" +#include "dwc_otg_driver.h" +#include "dwc_otg_cil.h" +#include "dwc_otg_cil_ifx.h" + +// #include "dwc_otg_pcd.h" // device +#include "dwc_otg_hcd.h" // host + +#include "dwc_otg_ifx.h" // for Infineon platform specific. + +#define DWC_DRIVER_VERSION "2.60a 22-NOV-2006" +#define DWC_DRIVER_DESC "HS OTG USB Controller driver" + +const char dwc_driver_name[] = "dwc_otg"; + +static unsigned long dwc_iomem_base = IFX_USB_IOMEM_BASE; +int dwc_irq = LTQ_USB_INT; +//int dwc_irq = 54; +//int dwc_irq = IFXMIPS_USB_OC_INT; + +extern int ifx_usb_hc_init(unsigned long base_addr, int irq); +extern void ifx_usb_hc_remove(void); + +/*-------------------------------------------------------------------------*/ +/* 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, + .speed = -1, + .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 = 0xff; /* 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 = 16; + dwc_otg_module_params.phy_utmi_width = 8; + 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; +} // check_parameters + + +/** + * 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 ); + + mask_and_ack_ifx_irq (_irq); + + return IRQ_RETVAL(retval); +} + + +/** + * This function is called when a DWC_OTG 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. + * + * @return + */ +static int +dwc_otg_driver_remove(struct platform_device *_dev) +{ + //dwc_otg_device_t *otg_dev = dev_get_drvdata(&_dev->dev); + dwc_otg_device_t *otg_dev = platform_get_drvdata(_dev); + + 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 DWC_DEVICE_ONLY + if (otg_dev->hcd != NULL) { + dwc_otg_hcd_remove(&_dev->dev); + } +#endif + printk("after removehcd\n"); + +// Note: Integrate HOST and DEVICE(Gadget) is not planned yet. +#ifndef DWC_HOST_ONLY + if (otg_dev->pcd != NULL) { + dwc_otg_pcd_remove(otg_dev); + } +#endif + if (otg_dev->core_if != NULL) { + dwc_otg_cil_remove( otg_dev->core_if ); + } + printk("after removecil\n"); + + /* + * Remove the device attributes + */ + dwc_otg_attr_remove(&_dev->dev); + printk("after removeattr\n"); + + /* + * 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. + */ + //dev_set_drvdata(&_dev->dev, 0); + platform_set_drvdata(_dev, 0); + return 0; +} + +/** + * This function is called when an DWC_OTG 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 + * lm_device. This allows the driver to access the dwc_otg_device + * structure on subsequent calls to driver methods for this device. + * + * @return + */ +static int __devinit +dwc_otg_driver_probe(struct platform_device *_dev) +{ + int retval = 0; + dwc_otg_device_t *dwc_otg_device; + int pin = (int)_dev->dev.platform_data; + int32_t snpsid; + struct resource *res; + gusbcfg_data_t usbcfg = {.d32 = 0}; + + // GPIOs + if(pin >= 0) + { + gpio_request(pin, "usb_power"); + gpio_direction_output(pin, 1); + gpio_set_value(pin, 1); + gpio_export(pin, 0); + } + dev_dbg(&_dev->dev, "dwc_otg_driver_probe (%p)\n", _dev); + + dwc_otg_device = kmalloc(sizeof(dwc_otg_device_t), GFP_KERNEL); + if (dwc_otg_device == 0) { + dev_err(&_dev->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(_dev, 0); + if (dwc_otg_device->irq == 0) { + dev_err(&_dev->dev, "no device irq\n"); + retval = -ENODEV; + goto fail; + } + dev_dbg(&_dev->dev, "OTG - device irq: %d\n", dwc_otg_device->irq); + res = platform_get_resource(_dev, IORESOURCE_MEM, 0); + if (res == NULL) { + dev_err(&_dev->dev, "no CSR address\n"); + retval = -ENODEV; + goto fail; + } + dev_dbg(&_dev->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(&_dev->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_nocache(dwc_otg_device->phys_addr, dwc_otg_device->base_len); + if (dwc_otg_device->base == NULL) { + dev_err(&_dev->dev, "ioremap() failed\n"); + retval = -ENOMEM; + goto fail; + } + dev_dbg(&_dev->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)); + if ((snpsid & 0xFFFFF000) != 0x4F542000) { + dev_err(&_dev->dev, "Bad value for SNPSID: 0x%08x\n", snpsid); + retval = -EINVAL; + goto fail; + } + + /* + * Initialize driver data to point to the global DWC_otg + * Device structure. + */ + platform_set_drvdata(_dev, dwc_otg_device); + dev_dbg(&_dev->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(&_dev->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 (&_dev->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((unsigned int)dwc_otg_device->irq, dwc_otg_common_irq, + //SA_INTERRUPT|SA_SHIRQ, "dwc_otg", (void *)dwc_otg_device ); + IRQF_SHARED, "dwc_otg", (void *)dwc_otg_device ); + //IRQF_DISABLED, "dwc_otg", (void *)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; + } + + /* + * Initialize the DWC_otg core. + */ + dwc_otg_core_init( dwc_otg_device->core_if ); + + +#ifndef DWC_HOST_ONLY // otg device mode. (gadget.) + /* + * Initialize the PCD + */ + retval = dwc_otg_pcd_init(dwc_otg_device); + if (retval != 0) { + DWC_ERROR("dwc_otg_pcd_init failed\n"); + dwc_otg_device->pcd = NULL; + goto fail; + } +#endif // DWC_HOST_ONLY + +#ifndef DWC_DEVICE_ONLY // otg host mode. (HCD) + /* + * 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(&_dev->dev, dwc_otg_device); + if (retval != 0) { + DWC_ERROR("dwc_otg_hcd_init failed\n"); + dwc_otg_device->hcd = NULL; + goto fail; + } +#endif // DWC_DEVICE_ONLY + + /* + * Enable the global interrupt after all the interrupt + * handlers are installed. + */ + dwc_otg_enable_global_interrupts( dwc_otg_device->core_if ); +#if 0 /*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 + + + return 0; + +fail: + dwc_otg_driver_remove(_dev); + 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. + */ +struct platform_driver dwc_otg_driver = { + .probe = dwc_otg_driver_probe, + .remove = dwc_otg_driver_remove, +// .suspend = dwc_otg_driver_suspend, +// .resume = dwc_otg_driver_resume, + .driver = { + .name = dwc_driver_name, + .owner = THIS_MODULE, + }, +}; +EXPORT_SYMBOL(dwc_otg_driver); + +/** + * 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_init(void) +{ + int retval = 0; + + printk(KERN_INFO "%s: version %s\n", dwc_driver_name, DWC_DRIVER_VERSION); + + // ifxmips setup + retval = ifx_usb_hc_init(dwc_iomem_base, dwc_irq); + if (retval < 0) + { + printk(KERN_ERR "%s retval=%d\n", __func__, retval); + return retval; + } + dwc_otg_power_on(); // ifx only!! + + + retval = platform_driver_register(&dwc_otg_driver); + + if (retval < 0) { + printk(KERN_ERR "%s retval=%d\n", __func__, retval); + goto error1; + } + + retval = driver_create_file(&dwc_otg_driver.driver, &driver_attr_version); + if (retval < 0) + { + printk(KERN_ERR "%s retval=%d\n", __func__, retval); + goto error2; + } + retval = driver_create_file(&dwc_otg_driver.driver, &driver_attr_debuglevel); + if (retval < 0) + { + printk(KERN_ERR "%s retval=%d\n", __func__, retval); + goto error3; + } + return retval; + + +error3: + driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version); +error2: + driver_unregister(&dwc_otg_driver.driver); +error1: + ifx_usb_hc_remove(); + return retval; +} +module_init(dwc_otg_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_cleanup(void) +{ + printk(KERN_DEBUG "dwc_otg_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); + ifx_usb_hc_remove(); + + printk(KERN_INFO "%s module removed\n", dwc_driver_name); +} +module_exit(dwc_otg_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, "ULPI at double or single data rate 0=Single 1=Double"); +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"); +module_param_named (iomem_base, dwc_iomem_base, ulong, 0444); +MODULE_PARM_DESC (dwc_iomem_base, "The base address of the DWC_OTG register."); +module_param_named (irq, dwc_irq, int, 0444); +MODULE_PARM_DESC (dwc_irq, "The interrupt number"); + +/** @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> + +*/ --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_driver.h @@ -0,0 +1,84 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.h $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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_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; + +//#define dev_dbg(fake, format, arg...) printk(KERN_CRIT __FILE__ ":%d: " format "\n" , __LINE__, ## arg) + +#endif --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_hcd.c @@ -0,0 +1,2870 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $Change: 631780 $ + * + * 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" + +#include <asm/irq.h> +#include "dwc_otg_ifx.h" // for Infineon platform specific. +extern atomic_t release_later; + +static u64 dma_mask = DMA_BIT_MASK(32); + +static const char dwc_otg_hcd_name [] = "dwc_otg_hcd"; +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, + //.suspend = + //.resume = + .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, +}; + +/** + * 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_hcd_usecs(dwc_otg_hcd_t *_hcd); + +int __devinit 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->rsrc_start = (int)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; + + /* 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 = (void *)~0; + //_dev->coherent_dma_mask = ~0; + _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; + } + + init_hcd_usecs(dwc_otg_hcd); + /* + * 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_name(_dev), 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->available_host_channels = _hcd->core_if->core_params->host_channels; + + /* + * 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_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. */ + if (dwc_otg_is_device_mode (core_if)) { + _hcd->state = HC_STATE_HALT; + return 0; + } + _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 { +#if 0 + struct usb_device *udev; + udev = usb_alloc_dev(NULL, bus, 0); + if (!udev) { + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error udev alloc\n"); + return -ENODEV; + } + udev->speed = USB_SPEED_HIGH; + /* 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; + } + */ +#else + DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error udev alloc\n"); +#endif + } + + 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 // DEBUG + +/** 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 // DEBUG + 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; + //struct usb_host_endpoint *_ep = NULL; + + 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 // DEBUG + + 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. */ + 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", _urb->status); + } + + 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 // DEBUG + + dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd, qh); + _ep->hcpriv = NULL; + } + + return; +} +extern int dwc_irq; +/** 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); + + mask_and_ack_ifx_irq (dwc_irq); + 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 // DEBUG + 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->u.hs.DeviceRemovable[0] = 0; + desc->u.hs.DeviceRemovable[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) { + printk("DISCONNECTED PORT\n"); + /* + * 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. + */ +#if 1 // winder. + *((u32 *) _buf) = cpu_to_le32(port_status); +#else + *((__le32 *) _buf) = cpu_to_le32(port_status); +#endif + 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 |= USB_PORT_STAT_HIGH_SPEED; + + 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 */ +#if 1 // winder. + *((u32 *) _buf) = cpu_to_le32(port_status); +#else + *((__le32 *) _buf) = cpu_to_le32(port_status); +#endif + + 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); + /* TODO: Is this for OTG protocol?? + * We shoudl remove OTG totally for Danube system. + * But, in the future, maybe we need this. + */ +#if 1 // winder + hprt0.b.prtrst = 1; + dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); +#else + /* 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); + } +#endif + /* 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); + printk("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 *)_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; +} +#define DEBUG_HOST_CHANNELS +#ifdef DEBUG_HOST_CHANNELS +static int last_sel_trans_num_per_scheduled = 0; +module_param(last_sel_trans_num_per_scheduled, int, 0444); + +static int last_sel_trans_num_nonper_scheduled = 0; +module_param(last_sel_trans_num_nonper_scheduled, int, 0444); + +static int last_sel_trans_num_avail_hc_at_start = 0; +module_param(last_sel_trans_num_avail_hc_at_start, int, 0444); + +static int last_sel_trans_num_avail_hc_at_end = 0; +module_param(last_sel_trans_num_avail_hc_at_end, int, 0444); +#endif /* DEBUG_HOST_CHANNELS */ + +/** + * 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; + unsigned long flags; + dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE; + +#ifdef DEBUG_SOF + DWC_DEBUGPL(DBG_HCD, " Select Transactions\n"); +#endif /* */ + +#ifdef DEBUG_HOST_CHANNELS + last_sel_trans_num_per_scheduled = 0; + last_sel_trans_num_nonper_scheduled = 0; + last_sel_trans_num_avail_hc_at_start = _hcd->available_host_channels; +#endif /* DEBUG_HOST_CHANNELS */ + + /* Process entries in the periodic ready list. */ + num_channels = _hcd->core_if->core_params->host_channels; + qh_ptr = _hcd->periodic_sched_ready.next; + while (qh_ptr != &_hcd->periodic_sched_ready + && !list_empty(&_hcd->free_hc_list)) { + + // Make sure we leave one channel for non periodic transactions. + local_irq_save(flags); + if (_hcd->available_host_channels <= 1) { + local_irq_restore(flags); + break; + } + _hcd->available_host_channels--; + local_irq_restore(flags); +#ifdef DEBUG_HOST_CHANNELS + last_sel_trans_num_per_scheduled++; +#endif /* DEBUG_HOST_CHANNELS */ + + 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; + local_irq_save(flags); + list_move(&qh->qh_list_entry, &_hcd->periodic_sched_assigned); + local_irq_restore(flags); + 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)); + 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 + && !list_empty(&_hcd->free_hc_list)) { + + local_irq_save(flags); + if (_hcd->available_host_channels < 1) { + local_irq_restore(flags); + break; + } + _hcd->available_host_channels--; + local_irq_restore(flags); +#ifdef DEBUG_HOST_CHANNELS + last_sel_trans_num_nonper_scheduled++; +#endif /* DEBUG_HOST_CHANNELS */ + + 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; + local_irq_save(flags); + list_move(&qh->qh_list_entry, &_hcd->non_periodic_sched_active); + local_irq_restore(flags); + + if (ret_val == DWC_OTG_TRANSACTION_NONE) { + ret_val = DWC_OTG_TRANSACTION_NON_PERIODIC; + } else { + ret_val = DWC_OTG_TRANSACTION_ALL; + } + + } +#ifdef DEBUG_HOST_CHANNELS + last_sel_trans_num_avail_hc_at_end = _hcd->available_host_channels; +#endif /* DEBUG_HOST_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; + } + + /* 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; + +#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 + 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->status = _status; + _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 +#if 0 + 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 %u, avg %u\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 %u, avg %u\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 %u, avg %u\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 +#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(" available_channels: %d\n", _hcd->available_host_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 */ --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_hcd.h @@ -0,0 +1,676 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd.h $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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 DWC_DEVICE_ONLY +#if !defined(__DWC_HCD_H__) +#define __DWC_HCD_H__ + +#include <linux/list.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> + +struct lm_device; +struct dwc_otg_device; + +#include "dwc_otg_cil.h" +//#include "dwc_otg_ifx.h" // winder + + +/** + * @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; + + /** @} */ + + uint16_t speed; + uint16_t frame_usecs[8]; + /** 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; + + /** + * Total bandwidth claimed so far for all periodic transfers + * in a frame. + * This will include a mixture of HS and FS transfers. + * Units are microseconds per (micro)frame. + * We have a budget per frame and have to schedule + * transactions accordingly. + * Watch out for the fact that things are actually scheduled for the + * "next frame". + */ + uint16_t frame_usecs[8]; + + /** + * 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 available host channels. + */ + int available_host_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 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 __devinit 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 urb *urb, + int status); +extern irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd); + +extern void dwc_otg_hcd_endpoint_disable(struct usb_hcd *hcd, + struct usb_host_endpoint *ep); + +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) +{ +#ifdef _SC_BUILD_ + return (dwc_otg_qh_t *) kmalloc (sizeof(dwc_otg_qh_t), GFP_ATOMIC); +#else + return (dwc_otg_qh_t *) kmalloc (sizeof(dwc_otg_qh_t), GFP_KERNEL); +#endif +} + +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) +{ +#ifdef _SC_BUILD_ + return (dwc_otg_qtd_t *) kmalloc (sizeof(dwc_otg_qtd_t), GFP_ATOMIC); +#else + return (dwc_otg_qtd_t *) kmalloc (sizeof(dwc_otg_qtd_t), GFP_KERNEL); +#endif +} + +/** 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 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 // DEBUG +#define dwc_sample_frrem(_hcd, _qh, _letter) +#endif // DEBUG +#endif // __DWC_HCD_H__ +#endif /* DWC_DEVICE_ONLY */ --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_hcd_intr.c @@ -0,0 +1,1841 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_intr.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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 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; +const int nak_deferral_delay = 8; +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 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 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 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); + } + if (gintsts.b.rxstsqlvl) { + retval |= dwc_otg_hcd_handle_rx_status_q_level_intr (_dwc_otg_hcd); + } + if (gintsts.b.nptxfempty) { + 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 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 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 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); + } + + /* 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); + 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); + 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 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_and_free(qtd); + 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; + unsigned long flags; + + 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; + //_qtd->urb->status = -EPROTO; + 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; + } + if (free_qtd) { + /* Only change must_free to true (do not set to zero here -- it is + * pre-initialized to zero). + */ + *must_free = 1; + } + 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); + + local_irq_save(flags); + _hcd->available_host_channels++; + local_irq_restore(flags); + /* 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 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); + + 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); + } else { + halt_channel(_hcd, _hc, _qtd, _hc->halt_status, 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); + + 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 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, int *must_free) +{ + 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); + _hc->qh->data_toggle = 0; + halt_channel(_hcd, _hc, _qtd, _hc->halt_status, 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 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 { +#ifdef DEBUG + 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)); +#endif + halt_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free); + } + } +} + +/** + * 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 DEBUG + if (!halt_status_ok(_hcd, _hc, _hc_regs, _qtd, must_free)) { + return 1; + } +#endif /* */ + release_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free); + } + + 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 */ --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_hcd_queue.c @@ -0,0 +1,794 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_queue.c $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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 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; + _qh->speed = _urb->dev->speed; + 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 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; +} + +/** + * Microframe scheduler + * track the total use in hcd->frame_usecs + * keep each qh use in qh->frame_usecs + * when surrendering the qh then donate the time back + */ +const unsigned short max_uframe_usecs[]={ 100, 100, 100, 100, 100, 100, 30, 0 }; + +/* + * called from dwc_otg_hcd.c:dwc_otg_hcd_init + */ +int init_hcd_usecs(dwc_otg_hcd_t *_hcd) +{ + int i; + for (i=0; i<8; i++) { + _hcd->frame_usecs[i] = max_uframe_usecs[i]; + } + return 0; +} + +static int find_single_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + int i; + unsigned short utime; + int t_left; + int ret; + int done; + + ret = -1; + utime = _qh->usecs; + t_left = utime; + i = 0; + done = 0; + while (done == 0) { + /* At the start _hcd->frame_usecs[i] = max_uframe_usecs[i]; */ + if (utime <= _hcd->frame_usecs[i]) { + _hcd->frame_usecs[i] -= utime; + _qh->frame_usecs[i] += utime; + t_left -= utime; + ret = i; + done = 1; + return ret; + } else { + i++; + if (i == 8) { + done = 1; + ret = -1; + } + } + } + return ret; +} + +/* + * use this for FS apps that can span multiple uframes + */ +static int find_multi_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + int i; + int j; + unsigned short utime; + int t_left; + int ret; + int done; + unsigned short xtime; + + ret = -1; + utime = _qh->usecs; + t_left = utime; + i = 0; + done = 0; +loop: + while (done == 0) { + if(_hcd->frame_usecs[i] <= 0) { + i++; + if (i == 8) { + done = 1; + ret = -1; + } + goto loop; + } + + /* + * we need n consequtive slots + * so use j as a start slot j plus j+1 must be enough time (for now) + */ + xtime= _hcd->frame_usecs[i]; + for (j = i+1 ; j < 8 ; j++ ) { + /* + * if we add this frame remaining time to xtime we may + * be OK, if not we need to test j for a complete frame + */ + if ((xtime+_hcd->frame_usecs[j]) < utime) { + if (_hcd->frame_usecs[j] < max_uframe_usecs[j]) { + j = 8; + ret = -1; + continue; + } + } + if (xtime >= utime) { + ret = i; + j = 8; /* stop loop with a good value ret */ + continue; + } + /* add the frame time to x time */ + xtime += _hcd->frame_usecs[j]; + /* we must have a fully available next frame or break */ + if ((xtime < utime) + && (_hcd->frame_usecs[j] == max_uframe_usecs[j])) { + ret = -1; + j = 8; /* stop loop with a bad value ret */ + continue; + } + } + if (ret >= 0) { + t_left = utime; + for (j = i; (t_left>0) && (j < 8); j++ ) { + t_left -= _hcd->frame_usecs[j]; + if ( t_left <= 0 ) { + _qh->frame_usecs[j] += _hcd->frame_usecs[j] + t_left; + _hcd->frame_usecs[j]= -t_left; + ret = i; + done = 1; + } else { + _qh->frame_usecs[j] += _hcd->frame_usecs[j]; + _hcd->frame_usecs[j] = 0; + } + } + } else { + i++; + if (i == 8) { + done = 1; + ret = -1; + } + } + } + return ret; +} + +static int find_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh) +{ + int ret; + ret = -1; + + if (_qh->speed == USB_SPEED_HIGH) { + /* if this is a hs transaction we need a full frame */ + ret = find_single_uframe(_hcd, _qh); + } else { + /* if this is a fs transaction we may need a sequence of frames */ + ret = find_multi_uframe(_hcd, _qh); + } + return ret; +} + +/** + * 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; + + int frame; + status = find_uframe(_hcd, _qh); + frame = -1; + if (status == 0) { + frame = 7; + } else { + if (status > 0 ) + frame = status-1; + } + + /* Set the new frame up */ + if (frame > -1) { + _qh->sched_frame &= ~0x7; + _qh->sched_frame |= (frame & 7); + } + + if (status != -1 ) + status = 0; + 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); + + + /* 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) +{ + int i; + list_del_init(&_qh->qh_list_entry); + + + /* Update claimed usecs per (micro)frame. */ + _hcd->periodic_usecs -= _qh->usecs; + + for (i = 0; i < 8; i++) { + _hcd->frame_usecs[i] += _qh->frame_usecs[i]; + _qh->frame_usecs[i] = 0; + } + /* 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 (dwc_frame_num_le(_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 */ --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_ifx.c @@ -0,0 +1,100 @@ +/****************************************************************************** +** +** FILE NAME : dwc_otg_ifx.c +** PROJECT : Twinpass/Danube +** MODULES : DWC OTG USB +** +** DATE : 12 Auguest 2007 +** AUTHOR : Sung Winder +** DESCRIPTION : Platform specific initialization. +** COPYRIGHT : Copyright (c) 2007 +** Infineon Technologies AG +** 2F, No.2, Li-Hsin Rd., Hsinchu Science Park, +** Hsin-chu City, 300 Taiwan. +** +** 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. +** +** HISTORY +** $Date $Author $Comment +** 12 Auguest 2007 Sung Winder Initiate Version +*******************************************************************************/ +#include "dwc_otg_ifx.h" + +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/ioport.h> +#include <linux/gpio.h> + +#include <asm/io.h> +//#include <asm/mach-ifxmips/ifxmips.h> +#include <lantiq_soc.h> + +#define IFXMIPS_GPIO_BASE_ADDR (0xBE100B00) + +#define IFXMIPS_GPIO_P0_OUT ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0010)) +#define IFXMIPS_GPIO_P1_OUT ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0040)) +#define IFXMIPS_GPIO_P0_IN ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0014)) +#define IFXMIPS_GPIO_P1_IN ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0044)) +#define IFXMIPS_GPIO_P0_DIR ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0018)) +#define IFXMIPS_GPIO_P1_DIR ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0048)) +#define IFXMIPS_GPIO_P0_ALTSEL0 ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x001C)) +#define IFXMIPS_GPIO_P1_ALTSEL0 ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x004C)) +#define IFXMIPS_GPIO_P0_ALTSEL1 ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0020)) +#define IFXMIPS_GPIO_P1_ALTSEL1 ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0050)) +#define IFXMIPS_GPIO_P0_OD ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0024)) +#define IFXMIPS_GPIO_P1_OD ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0054)) +#define IFXMIPS_GPIO_P0_STOFF ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0028)) +#define IFXMIPS_GPIO_P1_STOFF ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0058)) +#define IFXMIPS_GPIO_P0_PUDSEL ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x002C)) +#define IFXMIPS_GPIO_P1_PUDSEL ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x005C)) +#define IFXMIPS_GPIO_P0_PUDEN ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0030)) +#define IFXMIPS_GPIO_P1_PUDEN ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0060)) + + +#define writel ltq_w32 +#define readl ltq_r32 +void dwc_otg_power_on (void) +{ + // clear power + writel(readl(DANUBE_PMU_PWDCR) | 0x41, DANUBE_PMU_PWDCR); + // set clock gating + writel(readl(DANUBE_CGU_IFCCR) | 0x30, DANUBE_CGU_IFCCR); + // set power + writel(readl(DANUBE_PMU_PWDCR) & ~0x1, DANUBE_PMU_PWDCR); + writel(readl(DANUBE_PMU_PWDCR) & ~0x40, DANUBE_PMU_PWDCR); + writel(readl(DANUBE_PMU_PWDCR) & ~0x8000, DANUBE_PMU_PWDCR); + +#if 1//defined (DWC_HOST_ONLY) + // make the hardware be a host controller (default) + //clear_bit (DANUBE_USBCFG_HDSEL_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG); + writel(readl(DANUBE_RCU_UBSCFG) & ~(1<<DANUBE_USBCFG_HDSEL_BIT), DANUBE_RCU_UBSCFG); + + //#elif defined (DWC_DEVICE_ONLY) + /* set the controller to the device mode */ + // set_bit (DANUBE_USBCFG_HDSEL_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG); +#else +#error "For Danube/Twinpass, it should be HOST or Device Only." +#endif + + // set the HC's byte-order to big-endian + //set_bit (DANUBE_USBCFG_HOST_END_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG); + writel(readl(DANUBE_RCU_UBSCFG) | (1<<DANUBE_USBCFG_HOST_END_BIT), DANUBE_RCU_UBSCFG); + //clear_bit (DANUBE_USBCFG_SLV_END_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG); + writel(readl(DANUBE_RCU_UBSCFG) & ~(1<<DANUBE_USBCFG_SLV_END_BIT), DANUBE_RCU_UBSCFG); + //writel(0x400, DANUBE_RCU_UBSCFG); + + // PHY configurations. + writel (0x14014, (volatile unsigned long *)0xbe10103c); +} + +int ifx_usb_hc_init(unsigned long base_addr, int irq) +{ + return 0; +} + +void ifx_usb_hc_remove(void) +{ +} --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_ifx.h @@ -0,0 +1,85 @@ +/****************************************************************************** +** +** FILE NAME : dwc_otg_ifx.h +** PROJECT : Twinpass/Danube +** MODULES : DWC OTG USB +** +** DATE : 12 April 2007 +** AUTHOR : Sung Winder +** DESCRIPTION : Platform specific initialization. +** COPYRIGHT : Copyright (c) 2007 +** Infineon Technologies AG +** 2F, No.2, Li-Hsin Rd., Hsinchu Science Park, +** Hsin-chu City, 300 Taiwan. +** +** 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. +** +** HISTORY +** $Date $Author $Comment +** 12 April 2007 Sung Winder Initiate Version +*******************************************************************************/ +#if !defined(__DWC_OTG_IFX_H__) +#define __DWC_OTG_IFX_H__ + +#include <linux/irq.h> +#include <irq.h> + +// 20070316, winder added. +#ifndef SZ_256K +#define SZ_256K 0x00040000 +#endif + +extern void dwc_otg_power_on (void); + +/* FIXME: The current Linux-2.6 do not have these header files, but anyway, we need these. */ +// #include <asm/danube/danube.h> +// #include <asm/ifx/irq.h> + +/* winder, I used the Danube parameter as default. * + * We could change this through module param. */ +#define IFX_USB_IOMEM_BASE 0x1e101000 +#define IFX_USB_IOMEM_SIZE SZ_256K +#define IFX_USB_IRQ LTQ_USB_INT + +/** + * This function is called to set correct clock gating and power. + * For Twinpass/Danube board. + */ +#ifndef DANUBE_RCU_BASE_ADDR +#define DANUBE_RCU_BASE_ADDR (0xBF203000) +#endif + +#ifndef DANUBE_CGU +#define DANUBE_CGU (0xBF103000) +#endif +#ifndef DANUBE_CGU_IFCCR +/***CGU Interface Clock Control Register***/ +#define DANUBE_CGU_IFCCR ((volatile u32*)(DANUBE_CGU+ 0x0018)) +#endif + +#ifndef DANUBE_PMU +#define DANUBE_PMU (KSEG1+0x1F102000) +#endif +#ifndef DANUBE_PMU_PWDCR +/* PMU Power down Control Register */ +#define DANUBE_PMU_PWDCR ((volatile u32*)(DANUBE_PMU+0x001C)) +#endif + + +#define DANUBE_RCU_UBSCFG ((volatile u32*)(DANUBE_RCU_BASE_ADDR + 0x18)) +#define DANUBE_USBCFG_HDSEL_BIT 11 // 0:host, 1:device +#define DANUBE_USBCFG_HOST_END_BIT 10 // 0:little_end, 1:big_end +#define DANUBE_USBCFG_SLV_END_BIT 9 // 0:little_end, 1:big_end + +extern void ltq_mask_and_ack_irq(struct irq_data *d); + +static void inline mask_and_ack_ifx_irq(int x) +{ + struct irq_data d; + d.irq = x; + ltq_mask_and_ack_irq(&d); +} +#endif //__DWC_OTG_IFX_H__ --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_plat.h @@ -0,0 +1,269 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/platform/dwc_otg_plat.h $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $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(__LINUX__) +#error "The contents of this file is Linux specific!!!" +#endif +*/ +#include <lantiq_soc.h> +#define writel ltq_w32 +#define readl ltq_r32 + +/** + * 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) +{ + return readl(_reg); +}; + +/** + * 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) +{ + writel( _value, _reg ); +}; + +/** + * 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) +{ + writel( (readl(_reg) & ~_clear_mask) | _set_mask, _reg ); +}; + + +/** + * 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_DEBUG 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 + --- /dev/null +++ b/drivers/usb/dwc_otg/dwc_otg_regs.h @@ -0,0 +1,1797 @@ +/* ========================================================================== + * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_regs.h $ + * $Revision: 1.1.1.1 $ + * $Date: 2009-04-17 06:15:34 $ + * $Change: 631780 $ + * + * 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[15]; + volatile uint32_t dptxfsiz_dieptxf[15]; +} dwc_otg_core_global_regs_t; + +/** + * 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 reserved15_12 : 4; + unsigned devhnpen : 1; + unsigned hstsethnpen : 1; + unsigned hnpreq : 1; + unsigned hstnegscs : 1; + unsigned reserved7_2 : 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; + /** Current Mode */ + unsigned reserved1_0 : 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 + { +#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY 1 +#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY 0 + unsigned reserved9_31 : 23; + unsigned ptxfemplvl : 1; + unsigned nptxfemplvl_txfemplvl : 1; +#define DWC_GAHBCFG_DMAENABLE 1 + unsigned reserved : 1; + unsigned dmaenable : 1; +#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 hburstlen : 4; + 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 reserved8 : 1; + unsigned goutnakeff : 1; + unsigned ginnakeff : 1; + unsigned nptxfempty : 1; + unsigned rxstsqlvl : 1; + unsigned sofintr : 1; + unsigned otgintr : 1; + unsigned modemismatch : 1; + unsigned reserved0 : 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; +#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 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; +#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 pktsts : 4; + 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 + * - bit 24 - Terminate (Last entry for the selected + * channel/EP) + * - 2'b00 - IN/OUT + * - 2'b01 - Zero Length OUT + * - 2'b10 - PING/Complete Split + * - 2'b11 - Channel Halt + + */ + 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; +#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 hs_phy_type : 2; + unsigned point2point : 1; + unsigned architecture : 2; +#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 op_mode : 3; + } 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). + * 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 reserved31_23 : 9; + /** In Endpoint Mis-match count */ + unsigned epmscnt : 5; + unsigned reserved13_17 : 5; + /** Periodic Frame Interval */ +#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 perfrint : 2; + /** Device Addresses */ + unsigned devaddr : 7; + unsigned reserved3 : 1; + /** Non Zero Length Status OUT Handshake */ +#define DWC_DCFG_SEND_STALL 1 + unsigned nzstsouthshk : 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 reserved : 20; + /** Power-On Programming Done */ + unsigned pwronprgdone : 1; + /** 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 reserved22_31 : 10; + /** Frame or Microframe Number of the received SOF */ + unsigned soffn : 14; + unsigned reserved4_7: 4; + /** Erratic Error */ + unsigned errticerr : 1; + /** Enumerated Speed */ +#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 + unsigned enumspd : 2; + /** 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 reserved07_31 : 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 + * 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 { + unsigned reserved04_31 : 27; + /** OUT Token Received when Endpoint Disabled */ + unsigned outtknepdis : 1; + /** Setup Phase Done (contorl 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 */ +#define DWC_DEP0CTL_MPS_64 0 +#define DWC_DEP0CTL_MPS_32 1 +#define DWC_DEP0CTL_MPS_16 2 +#define DWC_DEP0CTL_MPS_8 3 + unsigned mps : 11; + } 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 { + unsigned reserved : 1; + /** Multi Count - Periodic IN endpoints */ + unsigned mc : 2; + /** Packet Count */ + unsigned pktcnt : 10; + /** Transfer size */ + unsigned xfersize : 19; + } 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 { + unsigned reserved31 : 1; + /**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 TX FIFOs */ +#define MAX_TX_FIFOS 15 +/** Maximum number of Endpoints/HostChannels */ +#define MAX_EPS_CHANNELS 16 +//#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]; +#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]; +#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_eps; /**< Number of EPs range: 0-16 (includes EP0) */ + //uint8_t num_perio_eps; /**< # of Periodic EP range: 0-15 */ + /*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]; + + /** 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 +{ + /** 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 { + /** Reserved */ + //unsigned reserved31_03 : 29; + /** FS/LS Only Support */ + unsigned fslssupp : 1; + /** FS/LS Phy Clock Select */ +#define DWC_HCFG_30_60_MHZ 0 +#define DWC_HCFG_48_MHZ 1 +#define DWC_HCFG_6_MHZ 2 + 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 { + unsigned frrem : 16; +#define DWC_HFNUM_MAX_FRNUM 0x3FFF + unsigned frnum : 16; + } b; +} hfnum_data_t; + +typedef union hptxsts_data +{ + /** raw register data */ + uint32_t d32; + + /** register bits */ + struct { + /** 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_odd : 1; + unsigned ptxqtop_chnum : 4; + unsigned ptxqtop_token : 2; + unsigned ptxqtop_terminate : 1; + unsigned ptxqspcavail : 8; + unsigned ptxfspcavail : 16; + } 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 reserved19_31 : 13; +#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0 +#define DWC_HPRT0_PRTSPD_FULL_SPEED 1 +#define DWC_HPRT0_PRTSPD_LOW_SPEED 2 + 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 */ +#define DWC_HCSPLIT_XACTPOS_MID 0 +#define DWC_HCSPLIT_XACTPOS_END 1 +#define DWC_HCSPLIT_XACTPOS_BEGIN 2 +#define DWC_HCSPLIT_XACTPOS_ALL 3 + unsigned xactpos : 2; + /** 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 { + /** 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) + */ +#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 + 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; + +#endif --- a/arch/mips/lantiq/xway/Makefile +++ b/arch/mips/lantiq/xway/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_SOC_AMAZON_SE) += clk-ase.o obj-$(CONFIG_LANTIQ_MACH_EASY50712) += mach-easy50712.o obj-$(CONFIG_LANTIQ_MACH_EASY50601) += mach-easy50601.o obj-$(CONFIG_LANTIQ_MACH_ARV45XX) += mach-arv45xx.o +obj-y += dev-dwc_otg.o --- /dev/null +++ b/arch/mips/lantiq/xway/dev-dwc_otg.c @@ -0,0 +1,70 @@ +/* + * 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. + * + * Copyright (C) 2010 John Crispin <blogic@openwrt.org> + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/string.h> +#include <linux/mtd/physmap.h> +#include <linux/kernel.h> +#include <linux/reboot.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/etherdevice.h> +#include <linux/reboot.h> +#include <linux/time.h> +#include <linux/io.h> +#include <linux/gpio.h> +#include <linux/leds.h> + +#include <asm/bootinfo.h> +#include <asm/irq.h> + +#include <lantiq_soc.h> +#include <lantiq_irq.h> +#include <lantiq_platform.h> + +#define LTQ_USB_IOMEM_BASE 0x1e101000 +#define LTQ_USB_IOMEM_SIZE 0x00001000 + +static struct resource resources[] = +{ + [0] = { + .name = "dwc_otg_membase", + .start = LTQ_USB_IOMEM_BASE, + .end = LTQ_USB_IOMEM_BASE + LTQ_USB_IOMEM_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "dwc_otg_irq", + .start = LTQ_USB_INT, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 dwc_dmamask = (u32)0x1fffffff; + +static struct platform_device platform_dev = { + .name = "dwc_otg", + .dev = { + .dma_mask = &dwc_dmamask, + }, + .resource = resources, + .num_resources = ARRAY_SIZE(resources), +}; + +int __init +xway_register_dwc(int pin) +{ + struct irq_data d; + d.irq = resources[1].start; + ltq_enable_irq(&d); + platform_dev.dev.platform_data = (void*) pin; + return platform_device_register(&platform_dev); +} --- /dev/null +++ b/arch/mips/lantiq/xway/dev-dwc_otg.h @@ -0,0 +1,17 @@ +/* + * 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. + * + * Copyright (C) 2010 John Crispin <blogic@openwrt.org> + */ + +#ifndef _LTQ_DEV_DWC_H__ +#define _LTQ_DEV_DWC_H__ + +#include <lantiq_platform.h> + +extern void __init xway_register_dwc(int pin); + +#endif --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2814,11 +2814,11 @@ hub_port_init (struct usb_hub *hub, stru udev->ttport = hdev->ttport; } else if (udev->speed != USB_SPEED_HIGH && hdev->speed == USB_SPEED_HIGH) { - if (!hub->tt.hub) { +/* if (!hub->tt.hub) { dev_err(&udev->dev, "parent hub has no TT\n"); retval = -EINVAL; goto fail; - } + }*/ udev->tt = &hub->tt; udev->ttport = port1; }