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ramips: rt305x: add dwc_otg driver

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Based on a patch by Layne Edwards <ledwards@astrumtech.net>

SVN-Revision: 27997
v19.07.3_mercusys_ac12_duma
Gabor Juhos 13 years ago
parent 0ca16a4600
commit 169d68c98c
22 changed files with 24360 additions and 1 deletions
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1
target/linux/ramips/files/arch/mips/ralink/Kconfig
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@ -47,6 +47,7 @@ config SOC_RT305X
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_HAS_EARLY_PRINTK
select MIPS_MACHINE
select USB_ARCH_HAS_HCD
config RALINK_DEV_GPIO_BUTTONS
def_bool n

24
target/linux/ramips/files/drivers/usb/dwc_otg/Kconfig
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config DWC_OTG
tristate "Ralink RT305X DWC_OTG support"
depends on SOC_RT305X
---help---
This driver supports Ralink DWC_OTG
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
config DWC_OTG_DEBUG
bool "Enable debug mode"
depends on DWC_OTG

25
target/linux/ramips/files/drivers/usb/dwc_otg/Makefile
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#
# Makefile for DWC_otg Highspeed USB controller driver
#
ifeq ($(CONFIG_DWC_OTG_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG
endif
# Use one of the following flags to compile the software in host-only or
# device-only mode.
ifeq ($(CONFIG_DWC_OTG_HOST_ONLY),y)
EXTRA_CFLAGS += -DDWC_HOST_ONLY
EXTRA_CFLAGS += -DDWC_EN_ISOC
endif
ifeq ($(CONFIG_DWC_OTG_DEVICE_ONLY),y)
EXTRA_CFLAGS += -DDWC_DEVICE_ONLY
endif
obj-$(CONFIG_DWC_OTG) := dwc_otg.o
dwc_otg-objs := dwc_otg_driver.o dwc_otg_attr.o
dwc_otg-objs += dwc_otg_cil.o dwc_otg_cil_intr.o
dwc_otg-objs += dwc_otg_pcd.o dwc_otg_pcd_intr.o
dwc_otg-objs += dwc_otg_hcd.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o

1575
target/linux/ramips/files/drivers/usb/dwc_otg/dummy_audio.c
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966
target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_attr.c
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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.c $
* $Revision: 1.2 $
* $Date: 2008-11-21 05:39:15 $
* $Change: 1064918 $
*
* 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> spramdump </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 <linux/version.h>
#include <asm/io.h>
#include "linux/dwc_otg_plat.h"
#include "dwc_otg_attr.h"
#include "dwc_otg_driver.h"
#include "dwc_otg_pcd.h"
#include "dwc_otg_hcd.h"
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
/*
* 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; \
}
/*
* 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; \
}
#else
/*
* 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, 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, 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; \
}
/*
* 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, 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, 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; \
}
#endif
#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);
#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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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 < 0x00040000 ) {
otg_dev->reg_offset = offset;
}
else {
dev_err( _dev, "invalid offset\n" );
}
return count;
}
DEVICE_ATTR(regoffset, S_IRUGO|S_IWUSR, (void *)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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
const char *buf,
size_t count )
{
#ifndef DWC_HOST_ONLY
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
uint32_t val = simple_strtoul(buf, NULL, 16);
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
char *buf)
{
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
dwc_otg_dump_global_registers( otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if)) {
dwc_otg_dump_host_registers( otg_dev->core_if);
} else {
dwc_otg_dump_dev_registers( otg_dev->core_if);
}
return sprintf( buf, "Register Dump\n" );
}
DEVICE_ATTR(regdump, S_IRUGO|S_IWUSR, regdump_show, 0);
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t spramdump_show( struct device *_dev,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
char *buf)
{
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
dwc_otg_dump_spram( otg_dev->core_if);
return sprintf( buf, "SPRAM Dump\n" );
}
DEVICE_ATTR(spramdump, S_IRUGO|S_IWUSR, spramdump_show, 0);
/**
* Dump the current hcd state.
*/
static ssize_t hcddump_show( struct device *_dev,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
char *buf)
{
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
int i;
int time;
int start_jiffies;
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,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
struct device_attribute *attr,
#endif
char *buf)
{
dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
uint32_t reg_val;
int i;
int time;
int start_jiffies;
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 error;
error = device_create_file(dev, &dev_attr_regoffset);
error = device_create_file(dev, &dev_attr_regvalue);
error = device_create_file(dev, &dev_attr_mode);
error = device_create_file(dev, &dev_attr_hnpcapable);
error = device_create_file(dev, &dev_attr_srpcapable);
error = device_create_file(dev, &dev_attr_hnp);
error = device_create_file(dev, &dev_attr_srp);
error = device_create_file(dev, &dev_attr_buspower);
error = device_create_file(dev, &dev_attr_bussuspend);
error = device_create_file(dev, &dev_attr_busconnected);
error = device_create_file(dev, &dev_attr_gotgctl);
error = device_create_file(dev, &dev_attr_gusbcfg);
error = device_create_file(dev, &dev_attr_grxfsiz);
error = device_create_file(dev, &dev_attr_gnptxfsiz);
error = device_create_file(dev, &dev_attr_gpvndctl);
error = device_create_file(dev, &dev_attr_ggpio);
error = device_create_file(dev, &dev_attr_guid);
error = device_create_file(dev, &dev_attr_gsnpsid);
error = device_create_file(dev, &dev_attr_devspeed);
error = device_create_file(dev, &dev_attr_enumspeed);
error = device_create_file(dev, &dev_attr_hptxfsiz);
error = device_create_file(dev, &dev_attr_hprt0);
error = device_create_file(dev, &dev_attr_remote_wakeup);
error = device_create_file(dev, &dev_attr_regdump);
error = device_create_file(dev, &dev_attr_spramdump);
error = device_create_file(dev, &dev_attr_hcddump);
error = device_create_file(dev, &dev_attr_hcd_frrem);
error = device_create_file(dev, &dev_attr_rd_reg_test);
error = device_create_file(dev, &dev_attr_wr_reg_test);
}
/**
* Remove the device files
*/
void dwc_otg_attr_remove (struct device *dev)
{
device_remove_file(dev, &dev_attr_regoffset);
device_remove_file(dev, &dev_attr_regvalue);
device_remove_file(dev, &dev_attr_mode);
device_remove_file(dev, &dev_attr_hnpcapable);
device_remove_file(dev, &dev_attr_srpcapable);
device_remove_file(dev, &dev_attr_hnp);
device_remove_file(dev, &dev_attr_srp);
device_remove_file(dev, &dev_attr_buspower);
device_remove_file(dev, &dev_attr_bussuspend);
device_remove_file(dev, &dev_attr_busconnected);
device_remove_file(dev, &dev_attr_gotgctl);
device_remove_file(dev, &dev_attr_gusbcfg);
device_remove_file(dev, &dev_attr_grxfsiz);
device_remove_file(dev, &dev_attr_gnptxfsiz);
device_remove_file(dev, &dev_attr_gpvndctl);
device_remove_file(dev, &dev_attr_ggpio);
device_remove_file(dev, &dev_attr_guid);
device_remove_file(dev, &dev_attr_gsnpsid);
device_remove_file(dev, &dev_attr_devspeed);
device_remove_file(dev, &dev_attr_enumspeed);
device_remove_file(dev, &dev_attr_hptxfsiz);
device_remove_file(dev, &dev_attr_hprt0);
device_remove_file(dev, &dev_attr_remote_wakeup);
device_remove_file(dev, &dev_attr_regdump);
device_remove_file(dev, &dev_attr_spramdump);
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);
}

67
target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_attr.h
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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.h $
* $Revision: 1.2 $
* $Date: 2008-11-21 05:39:15 $
* $Change: 477051 $
*
* 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

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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_cil.c
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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_cil.h
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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_cil_intr.c
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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil_intr.c $
* $Revision: 1.2 $
* $Date: 2008-11-21 05:39:15 $
* $Change: 1065567 $
*
* Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
* "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
* otherwise expressly agreed to in writing between Synopsys and you.
*
* The Software IS NOT an item of Licensed Software or Licensed Product under
* any End User Software License Agreement or Agreement for Licensed Product
* with Synopsys or any supplement thereto. You are permitted to use and
* redistribute this Software in source and binary forms, with or without
* modification, provided that redistributions of source code must retain this
* notice. You may not view, use, disclose, copy or distribute this file or
* any information contained herein except pursuant to this license grant from
* Synopsys. If you do not agree with this notice, including the disclaimer
* below, then you are not authorized to use the Software.
*
* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* ========================================================================== */
/** @file
*
* The Core Interface Layer provides basic services for accessing and
* managing the DWC_otg hardware. These services are used by both the
* Host Controller Driver and the Peripheral Controller Driver.
*
* This file contains the Common Interrupt handlers.
*/
#include "linux/dwc_otg_plat.h"
#include "dwc_otg_regs.h"
#include "dwc_otg_cil.h"
#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, "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;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
void w_conn_id_status_change(void *p)
{
dwc_otg_core_if_t *core_if = p;
#else
void w_conn_id_status_change(struct work_struct *p)
{
dwc_otg_core_if_t *core_if = container_of(p, dwc_otg_core_if_t, w_conn_id);
#endif
uint32_t count = 0;
gotgctl_data_t gotgctl = { .d32 = 0 };
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);
}
}
/**
* 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)
{
/*
* 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_data_t gintmsk = { .d32 = 0 };
gintsts_data_t gintsts = { .d32 = 0 };
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"));
/*
* Need to schedule a work, as there are possible DELAY function calls
*/
queue_work(core_if->wq_otg, &core_if->w_conn_id);
/* Set flag and clear interrupt */
gintsts.b.conidstschng = 1;
dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that a device is initiating the Session
* Request Protocol to request the host to turn on bus power so a new
* session can begin. The handler responds by turning on bus power. If
* the DWC_otg controller is in low power mode, the handler brings the
* controller out of low power mode before turning on bus power.
*
* @param core_if Programming view of DWC_otg controller.
*/
int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t *core_if)
{
gintsts_data_t gintsts;
#ifndef DWC_HOST_ONLY
hprt0_data_t hprt0;
DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
if (dwc_otg_is_device_mode(core_if)) {
DWC_PRINT("SRP: Device mode\n");
} else {
DWC_PRINT("SRP: Host mode\n");
/* Turn on the port power bit. */
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtpwr = 1;
dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
/* Start the Connection timer. So a message can be displayed
* if connect does not occur within 10 seconds. */
hcd_session_start(core_if);
}
#endif
/* Clear interrupt */
gintsts.d32 = 0;
gintsts.b.sessreqintr = 1;
dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
void w_wakeup_detected(void *p)
{
dwc_otg_core_if_t* core_if = p;
#else
void w_wakeup_detected(struct work_struct *p)
{
struct delayed_work *dw = container_of(p, struct delayed_work, work);
dwc_otg_core_if_t *core_if = container_of(dw, dwc_otg_core_if_t, w_wkp);
#endif
/*
* 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};
#if 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);
#endif //0
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));
}
/**
* 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 {
pcgcctl_data_t pcgcctl = {.d32=0};
/* Restart the Phy Clock */
pcgcctl.b.stoppclk = 1;
dwc_modify_reg32(core_if->pcgcctl, pcgcctl.d32, 0);
queue_delayed_work(core_if->wq_otg, &core_if->w_wkp, ((70 * HZ / 1000) + 1));
}
/* 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
gintsts.d32 = 0;
gintsts.b.disconnect = 1;
dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This interrupt indicates that SUSPEND state has been detected on
* the USB.
*
* For HNP the USB Suspend interrupt signals the change from
* "a_peripheral" to "a_host".
*
* When power management is enabled the core will be put in low power
* mode.
*/
int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t *core_if)
{
dsts_data_t dsts;
gintsts_data_t gintsts;
DWC_DEBUGPL(DBG_ANY,"USB SUSPEND\n");
if (dwc_otg_is_device_mode(core_if)) {
/* Check the Device status register to determine if the Suspend
* state is active. */
dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
"HWCFG4.power Optimize=%d\n",
dsts.b.suspsts, core_if->hwcfg4.b.power_optimiz);
#ifdef PARTIAL_POWER_DOWN
/** @todo Add a module parameter for power management. */
if (dsts.b.suspsts && core_if->hwcfg4.b.power_optimiz) {
pcgcctl_data_t power = {.d32=0};
DWC_DEBUGPL(DBG_CIL, "suspend\n");
power.b.pwrclmp = 1;
dwc_write_reg32(core_if->pcgcctl, power.d32);
power.b.rstpdwnmodule = 1;
dwc_modify_reg32(core_if->pcgcctl, 0, power.d32);
power.b.stoppclk = 1;
dwc_modify_reg32(core_if->pcgcctl, 0, power.d32);
} else {
DWC_DEBUGPL(DBG_ANY,"disconnect?\n");
}
#endif
/* PCD callback for suspend. */
pcd_suspend(core_if);
} else {
if (core_if->op_state == A_PERIPHERAL) {
DWC_DEBUGPL(DBG_ANY,"a_peripheral->a_host\n");
/* Clear the a_peripheral flag, back to a_host. */
pcd_stop(core_if);
hcd_start(core_if);
core_if->op_state = A_HOST;
}
}
/* Clear interrupt */
gintsts.d32 = 0;
gintsts.b.usbsuspend = 1;
dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32);
return 1;
}
/**
* This function returns the Core Interrupt register.
*/
static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t *core_if)
{
gintsts_data_t gintsts;
gintmsk_data_t gintmsk;
gintmsk_data_t gintmsk_common = {.d32=0};
gintmsk_common.b.wkupintr = 1;
gintmsk_common.b.sessreqintr = 1;
gintmsk_common.b.conidstschng = 1;
gintmsk_common.b.otgintr = 1;
gintmsk_common.b.modemismatch = 1;
gintmsk_common.b.disconnect = 1;
gintmsk_common.b.usbsuspend = 1;
/** @todo: The port interrupt occurs while in device
* mode. Added code to CIL to clear the interrupt for now!
*/
gintmsk_common.b.portintr = 1;
gintsts.d32 = dwc_read_reg32(&core_if->core_global_regs->gintsts);
gintmsk.d32 = dwc_read_reg32(&core_if->core_global_regs->gintmsk);
#ifdef 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.
*
*/
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;
}
S3C2410X_CLEAR_EINTPEND();
return retval;
}

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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_driver.c
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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_driver.h
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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.h $
* $Revision: 1.2 $
* $Date: 2008-11-21 05:39:15 $
* $Change: 1064918 $
*
* 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_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;
struct device *parent;
/** Pointer to the core interface structure. */
dwc_otg_core_if_t *core_if;
/** Register offset for Diagnostic API. */
uint32_t reg_offset;
/** Pointer to the PCD structure. */
struct dwc_otg_pcd *pcd;
/** Pointer to the HCD structure. */
struct dwc_otg_hcd *hcd;
/** Flag to indicate whether the common IRQ handler is installed. */
uint8_t common_irq_installed;
/* Interrupt request number. */
unsigned int irq;
/* Physical address of Control and Status registers, used by
* release_mem_region().
*/
resource_size_t phys_addr;
/* Length of memory region, used by release_mem_region(). */
unsigned long base_len;
} dwc_otg_device_t;
#endif

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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.h $
* $Revision: 1.3 $
* $Date: 2008-12-15 06:51:32 $
* $Change: 1064918 $
*
* 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
#ifndef __DWC_HCD_H__
#define __DWC_HCD_H__
#include <linux/list.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
struct dwc_otg_device;
#include "dwc_otg_cil.h"
/**
* @file
*
* This file contains the structures, constants, and interfaces for
* the Host Contoller Driver (HCD).
*
* The Host Controller Driver (HCD) is responsible for translating requests
* from the USB Driver into the appropriate actions on the DWC_otg controller.
* It isolates the USBD from the specifics of the controller by providing an
* API to the USBD.
*/
/**
* Phases for control transfers.
*/
typedef enum dwc_otg_control_phase {
DWC_OTG_CONTROL_SETUP,
DWC_OTG_CONTROL_DATA,
DWC_OTG_CONTROL_STATUS
} dwc_otg_control_phase_e;
/** Transaction types. */
typedef enum dwc_otg_transaction_type {
DWC_OTG_TRANSACTION_NONE,
DWC_OTG_TRANSACTION_PERIODIC,
DWC_OTG_TRANSACTION_NON_PERIODIC,
DWC_OTG_TRANSACTION_ALL
} dwc_otg_transaction_type_e;
/**
* A Queue Transfer Descriptor (QTD) holds the state of a bulk, control,
* interrupt, or isochronous transfer. A single QTD is created for each URB
* (of one of these types) submitted to the HCD. The transfer associated with
* a QTD may require one or multiple transactions.
*
* A QTD is linked to a Queue Head, which is entered in either the
* non-periodic or periodic schedule for execution. When a QTD is chosen for
* execution, some or all of its transactions may be executed. After
* execution, the state of the QTD is updated. The QTD may be retired if all
* its transactions are complete or if an error occurred. Otherwise, it
* remains in the schedule so more transactions can be executed later.
*/
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;
} dwc_otg_qtd_t;
/**
* A Queue Head (QH) holds the static characteristics of an endpoint and
* maintains a list of transfers (QTDs) for that endpoint. A QH structure may
* be entered in either the non-periodic or periodic schedule.
*/
typedef struct dwc_otg_qh {
/**
* Endpoint type.
* One of the following values:
* - USB_ENDPOINT_XFER_CONTROL
* - USB_ENDPOINT_XFER_ISOC
* - USB_ENDPOINT_XFER_BULK
* - USB_ENDPOINT_XFER_INT
*/
uint8_t ep_type;
uint8_t ep_is_in;
/** wMaxPacketSize Field of Endpoint Descriptor. */
uint16_t maxp;
/**
* Determines the PID of the next data packet for non-control
* transfers. Ignored for control transfers.<br>
* One of the following values:
* - DWC_OTG_HC_PID_DATA0
* - DWC_OTG_HC_PID_DATA1
*/
uint8_t data_toggle;
/** Ping state if 1. */
uint8_t ping_state;
/**
* List of QTDs for this QH.
*/
struct list_head qtd_list;
/** Host channel currently processing transfers for this QH. */
dwc_hc_t *channel;
/** QTD currently assigned to a host channel for this QH. */
dwc_otg_qtd_t *qtd_in_process;
/** Full/low speed endpoint on high-speed hub requires split. */
uint8_t do_split;
/** @name Periodic schedule information */
/** @{ */
/** Bandwidth in microseconds per (micro)frame. */
uint8_t usecs;
/** Interval between transfers in (micro)frames. */
uint16_t interval;
/**
* (micro)frame to initialize a periodic transfer. The transfer
* executes in the following (micro)frame.
*/
uint16_t sched_frame;
/** (micro)frame at which last start split was initialized. */
uint16_t start_split_frame;
/** @} */
/** Entry for QH in either the periodic or non-periodic schedule. */
struct list_head qh_list_entry;
/* For non-dword aligned buffer support */
uint8_t *dw_align_buf;
dma_addr_t dw_align_buf_dma;
} dwc_otg_qh_t;
/**
* This structure holds the state of the HCD, including the non-periodic and
* periodic schedules.
*/
typedef struct dwc_otg_hcd {
/** The DWC otg device pointer */
struct dwc_otg_device *otg_dev;
/** 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;
/**
* Active items in the non-periodic schedule. This is a list of
* Queue Heads. Transfers associated with these Queue Heads are
* currently assigned to a host channel.
*/
struct list_head non_periodic_sched_active;
/**
* Pointer to the next Queue Head to process in the active
* non-periodic schedule.
*/
struct list_head *non_periodic_qh_ptr;
/**
* Inactive items in the periodic schedule. This is a list of QHs for
* periodic transfers that are _not_ scheduled for the next frame.
* Each QH in the list has an interval counter that determines when it
* needs to be scheduled for execution. This scheduling mechanism
* allows only a simple calculation for periodic bandwidth used (i.e.
* must assume that all periodic transfers may need to execute in the
* same frame). However, it greatly simplifies scheduling and should
* be sufficient for the vast majority of OTG hosts, which need to
* connect to a small number of peripherals at one time.
*
* Items move from this list to periodic_sched_ready when the QH
* interval counter is 0 at SOF.
*/
struct list_head periodic_sched_inactive;
/**
* List of periodic QHs that are ready for execution in the next
* frame, but have not yet been assigned to host channels.
*
* Items move from this list to periodic_sched_assigned as host
* channels become available during the current frame.
*/
struct list_head periodic_sched_ready;
/**
* List of periodic QHs to be executed in the next frame that are
* assigned to host channels.
*
* Items move from this list to periodic_sched_queued as the
* transactions for the QH are queued to the DWC_otg controller.
*/
struct list_head periodic_sched_assigned;
/**
* List of periodic QHs that have been queued for execution.
*
* Items move from this list to either periodic_sched_inactive or
* periodic_sched_ready when the channel associated with the transfer
* is released. If the interval for the QH is 1, the item moves to
* periodic_sched_ready because it must be rescheduled for the next
* frame. Otherwise, the item moves to periodic_sched_inactive.
*/
struct list_head periodic_sched_queued;
/**
* Total bandwidth claimed so far for periodic transfers. This value
* is in microseconds per (micro)frame. The assumption is that all
* periodic transfers may occur in the same (micro)frame.
*/
uint16_t periodic_usecs;
/**
* Frame number read from the core at SOF. The value ranges from 0 to
* DWC_HFNUM_MAX_FRNUM.
*/
uint16_t frame_number;
/**
* Free host channels in the controller. This is a list of
* dwc_hc_t items.
*/
struct list_head free_hc_list;
/**
* Number of host channels assigned to periodic transfers. Currently
* assuming that there is a dedicated host channel for each periodic
* transaction and at least one host channel available for
* non-periodic transactions.
*/
int periodic_channels;
/**
* Number of host channels assigned to non-periodic transfers.
*/
int non_periodic_channels;
/**
* Array of pointers to the host channel descriptors. Allows accessing
* a host channel descriptor given the host channel number. This is
* useful in interrupt handlers.
*/
dwc_hc_t *hc_ptr_array[MAX_EPS_CHANNELS];
/**
* Buffer to use for any data received during the status phase of a
* control transfer. Normally no data is transferred during the status
* phase. This buffer is used as a bit bucket.
*/
uint8_t *status_buf;
/**
* DMA address for status_buf.
*/
dma_addr_t status_buf_dma;
#define DWC_OTG_HCD_STATUS_BUF_SIZE 64
/**
* Structure to allow starting the HCD in a non-interrupt context
* during an OTG role change.
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
struct work_struct start_work;
#else
struct delayed_work start_work;
#endif
/**
* 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;
/* */
spinlock_t lock;
#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 dwc_otg_hcd_init(struct device *dev);
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,
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
int mem_flags
#else
gfp_t mem_flags
#endif
);
extern int dwc_otg_hcd_urb_dequeue(struct usb_hcd *hcd,
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
#endif
struct urb *urb, int status);
extern void dwc_otg_hcd_endpoint_disable(struct usb_hcd *hcd,
struct usb_host_endpoint *ep);
extern irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
, struct pt_regs *regs
#endif
);
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_hcd_t *hcd, 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);
/** 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(hcd, qh);
}
/** Allocates memory for a QH structure.
* @return Returns the memory allocate or NULL on error. */
static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc(void)
{
return (dwc_otg_qh_t *) kmalloc(sizeof(dwc_otg_qh_t), GFP_KERNEL);
}
extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(struct urb *urb);
extern void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t *qtd, struct urb *urb);
extern int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t *qtd, dwc_otg_hcd_t *dwc_otg_hcd);
/** Allocates memory for a QTD structure.
* @return Returns the memory allocate or NULL on error. */
static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc(void)
{
return (dwc_otg_qtd_t *) kmalloc(sizeof(dwc_otg_qtd_t), GFP_KERNEL);
}
/** Frees the memory for a QTD structure. QTD should already be removed from
* list.
* @param[in] qtd QTD to free.*/
static inline void dwc_otg_hcd_qtd_free(dwc_otg_qtd_t *qtd)
{
kfree(qtd);
}
/** Removes a QTD from list.
* @param[in] hcd HCD instance.
* @param[in] qtd QTD to remove from list. */
static inline void dwc_otg_hcd_qtd_remove(dwc_otg_hcd_t *hcd, dwc_otg_qtd_t *qtd)
{
unsigned long flags;
SPIN_LOCK_IRQSAVE(&hcd->lock, flags);
list_del(&qtd->qtd_list_entry);
SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags);
}
/** Remove and free a QTD */
static inline void dwc_otg_hcd_qtd_remove_and_free(dwc_otg_hcd_t *hcd, dwc_otg_qtd_t *qtd)
{
dwc_otg_hcd_qtd_remove(hcd, 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
#define dwc_sample_frrem(_hcd, _qh, _letter)
#endif
#endif
#endif /* DWC_DEVICE_ONLY */

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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_hcd_intr.c
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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_hcd_queue.c
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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_queue.c $
* $Revision: 1.5 $
* $Date: 2008-12-15 06:51:32 $
* $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 <linux/dma-mapping.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] hcd HCD instance.
* @param[in] qh The QH to free.
*/
void dwc_otg_hcd_qh_free (dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
dwc_otg_qtd_t *qtd;
struct list_head *pos;
unsigned long flags;
/* Free each QTD in the QTD list */
SPIN_LOCK_IRQSAVE(&hcd->lock, 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);
}
SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags)
if (qh->dw_align_buf) {
dma_free_coherent((dwc_otg_hcd_to_hcd(hcd))->self.controller,
hcd->core_if->core_params->max_transfer_size,
qh->dw_align_buf,
qh->dw_align_buf_dma);
}
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)
{
char *speed, *type;
memset (qh, 0, sizeof (dwc_otg_qh_t));
/* Initialize QH */
switch (usb_pipetype(urb->pipe)) {
case PIPE_CONTROL:
qh->ep_type = USB_ENDPOINT_XFER_CONTROL;
break;
case PIPE_BULK:
qh->ep_type = USB_ENDPOINT_XFER_BULK;
break;
case PIPE_ISOCHRONOUS:
qh->ep_type = USB_ENDPOINT_XFER_ISOC;
break;
case PIPE_INTERRUPT:
qh->ep_type = USB_ENDPOINT_XFER_INT;
break;
}
qh->ep_is_in = usb_pipein(urb->pipe) ? 1 : 0;
qh->data_toggle = DWC_OTG_HC_PID_DATA0;
qh->maxp = usb_maxpacket(urb->dev, urb->pipe, !(usb_pipein(urb->pipe)));
INIT_LIST_HEAD(&qh->qtd_list);
INIT_LIST_HEAD(&qh->qh_list_entry);
qh->channel = NULL;
/* FS/LS Enpoint on HS Hub
* NOT virtual root hub */
qh->do_split = 0;
if (((urb->dev->speed == USB_SPEED_LOW) ||
(urb->dev->speed == USB_SPEED_FULL)) &&
(urb->dev->tt) && (urb->dev->tt->hub) && (urb->dev->tt->hub->devnum != 1))
{
DWC_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n",
usb_pipeendpoint(urb->pipe), urb->dev->tt->hub->devnum,
urb->dev->ttport);
qh->do_split = 1;
}
if (qh->ep_type == USB_ENDPOINT_XFER_INT ||
qh->ep_type == USB_ENDPOINT_XFER_ISOC) {
/* Compute scheduling parameters once and save them. */
hprt0_data_t hprt;
/** @todo Account for split transfers in the bus time. */
int bytecount = dwc_hb_mult(qh->maxp) * dwc_max_packet(qh->maxp);
/* FIXME: work-around patch by Steven */
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");
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;
}
DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Speed = %s\n", speed);
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;
}
DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Type = %s\n",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
qh->dw_align_buf = NULL;
return;
}
/**
* Checks that a channel is available for a periodic transfer.
*
* @return 0 if successful, negative error code otherise.
*/
static int periodic_channel_available(dwc_otg_hcd_t *hcd)
{
/*
* Currently assuming that there is a dedicated host channnel for each
* periodic transaction plus at least one host channel for
* non-periodic transactions.
*/
int status;
int num_channels;
num_channels = hcd->core_if->core_params->host_channels;
if ((hcd->periodic_channels + hcd->non_periodic_channels < num_channels) &&
(hcd->periodic_channels < num_channels - 1)) {
status = 0;
}
else {
DWC_NOTICE("%s: Total channels: %d, Periodic: %d, Non-periodic: %d\n",
__func__, num_channels, hcd->periodic_channels,
hcd->non_periodic_channels);
status = -ENOSPC;
}
return status;
}
/**
* Checks that there is sufficient bandwidth for the specified QH in the
* periodic schedule. For simplicity, this calculation assumes that all the
* transfers in the periodic schedule may occur in the same (micro)frame.
*
* @param hcd The HCD state structure for the DWC OTG controller.
* @param qh QH containing periodic bandwidth required.
*
* @return 0 if successful, negative error code otherwise.
*/
static int check_periodic_bandwidth(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
int status;
uint16_t max_claimed_usecs;
status = 0;
if (hcd->core_if->core_params->speed == DWC_SPEED_PARAM_HIGH) {
/*
* High speed mode.
* Max periodic usecs is 80% x 125 usec = 100 usec.
*/
max_claimed_usecs = 100 - qh->usecs;
} else {
/*
* Full speed mode.
* Max periodic usecs is 90% x 1000 usec = 900 usec.
*/
max_claimed_usecs = 900 - qh->usecs;
}
if (hcd->periodic_usecs > max_claimed_usecs) {
DWC_NOTICE("%s: already claimed usecs %d, required usecs %d\n",
__func__, hcd->periodic_usecs, qh->usecs);
status = -ENOSPC;
}
return status;
}
/**
* Checks that the max transfer size allowed in a host channel is large enough
* to handle the maximum data transfer in a single (micro)frame for a periodic
* transfer.
*
* @param hcd The HCD state structure for the DWC OTG controller.
* @param qh QH for a periodic endpoint.
*
* @return 0 if successful, negative error code otherwise.
*/
static int check_max_xfer_size(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
int status;
uint32_t max_xfer_size;
uint32_t max_channel_xfer_size;
status = 0;
max_xfer_size = dwc_max_packet(qh->maxp) * dwc_hb_mult(qh->maxp);
max_channel_xfer_size = hcd->core_if->core_params->max_transfer_size;
if (max_xfer_size > max_channel_xfer_size) {
DWC_NOTICE("%s: Periodic xfer length %d > "
"max xfer length for channel %d\n",
__func__, max_xfer_size, max_channel_xfer_size);
status = -ENOSPC;
}
return status;
}
/**
* Schedules an interrupt or isochronous transfer in the periodic schedule.
*
* @param hcd The HCD state structure for the DWC OTG controller.
* @param qh QH for the periodic transfer. The QH should already contain the
* scheduling information.
*
* @return 0 if successful, negative error code otherwise.
*/
static int schedule_periodic(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
int status = 0;
status = periodic_channel_available(hcd);
if (status) {
DWC_NOTICE("%s: No host channel available for periodic "
"transfer.\n", __func__);
return status;
}
status = check_periodic_bandwidth(hcd, qh);
if (status) {
DWC_NOTICE("%s: Insufficient periodic bandwidth for "
"periodic transfer.\n", __func__);
return status;
}
status = check_max_xfer_size(hcd, qh);
if (status) {
DWC_NOTICE("%s: Channel max transfer size too small "
"for periodic transfer.\n", __func__);
return status;
}
/* Always start in the inactive schedule. */
list_add_tail(&qh->qh_list_entry, &hcd->periodic_sched_inactive);
/* Reserve the periodic channel. */
hcd->periodic_channels++;
/* Update claimed usecs per (micro)frame. */
hcd->periodic_usecs += qh->usecs;
/* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */
hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_allocated += qh->usecs / qh->interval;
if (qh->ep_type == USB_ENDPOINT_XFER_INT) {
hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_int_reqs++;
DWC_DEBUGPL(DBG_HCD, "Scheduled intr: qh %p, usecs %d, period %d\n",
qh, qh->usecs, qh->interval);
} else {
hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_isoc_reqs++;
DWC_DEBUGPL(DBG_HCD, "Scheduled isoc: qh %p, usecs %d, period %d\n",
qh, qh->usecs, qh->interval);
}
return status;
}
/**
* This function adds a QH to either the non periodic or periodic schedule if
* it is not already in the schedule. If the QH is already in the schedule, no
* action is taken.
*
* @return 0 if successful, negative error code otherwise.
*/
int dwc_otg_hcd_qh_add (dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
unsigned long flags;
int status = 0;
SPIN_LOCK_IRQSAVE(&hcd->lock, 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:
SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags)
return status;
}
/**
* Removes an interrupt or isochronous transfer from the periodic schedule.
*
* @param hcd The HCD state structure for the DWC OTG controller.
* @param qh QH for the periodic transfer.
*/
static void deschedule_periodic(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
list_del_init(&qh->qh_list_entry);
/* Release the periodic channel reservation. */
hcd->periodic_channels--;
/* Update claimed usecs per (micro)frame. */
hcd->periodic_usecs -= qh->usecs;
/* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */
hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_allocated -= qh->usecs / qh->interval;
if (qh->ep_type == USB_ENDPOINT_XFER_INT) {
hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_int_reqs--;
DWC_DEBUGPL(DBG_HCD, "Descheduled intr: qh %p, usecs %d, period %d\n",
qh, qh->usecs, qh->interval);
} else {
hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_isoc_reqs--;
DWC_DEBUGPL(DBG_HCD, "Descheduled isoc: qh %p, usecs %d, period %d\n",
qh, qh->usecs, qh->interval);
}
}
/**
* Removes a QH from either the non-periodic or periodic schedule. Memory is
* not freed.
*
* @param[in] hcd The HCD state structure.
* @param[in] qh QH to remove from schedule. */
void dwc_otg_hcd_qh_remove (dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
unsigned long flags;
SPIN_LOCK_IRQSAVE(&hcd->lock, 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:
SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags)
}
/**
* 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;
SPIN_LOCK_IRQSAVE(&hcd->lock, flags);
if (dwc_qh_is_non_per(qh)) {
dwc_otg_hcd_qh_remove(hcd, qh);
if (!list_empty(&qh->qtd_list)) {
/* Add back to inactive non-periodic schedule. */
dwc_otg_hcd_qh_add(hcd, qh);
}
} else {
uint16_t frame_number = dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(hcd));
if (qh->do_split) {
/* Schedule the next continuing periodic split transfer */
if (sched_next_periodic_split) {
qh->sched_frame = frame_number;
if (dwc_frame_num_le(frame_number,
dwc_frame_num_inc(qh->start_split_frame, 1))) {
/*
* Allow one frame to elapse after start
* split microframe before scheduling
* complete split, but DONT if we are
* doing the next start split in the
* same frame for an ISOC out.
*/
if ((qh->ep_type != USB_ENDPOINT_XFER_ISOC) || (qh->ep_is_in != 0)) {
qh->sched_frame = dwc_frame_num_inc(qh->sched_frame, 1);
}
}
} else {
qh->sched_frame = dwc_frame_num_inc(qh->start_split_frame,
qh->interval);
if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
qh->sched_frame = frame_number;
}
qh->sched_frame |= 0x7;
qh->start_split_frame = qh->sched_frame;
}
} else {
qh->sched_frame = dwc_frame_num_inc(qh->sched_frame, qh->interval);
if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
qh->sched_frame = frame_number;
}
}
if (list_empty(&qh->qtd_list)) {
dwc_otg_hcd_qh_remove(hcd, qh);
} else {
/*
* Remove from periodic_sched_queued and move to
* appropriate queue.
*/
if (qh->sched_frame == frame_number) {
list_move(&qh->qh_list_entry,
&hcd->periodic_sched_ready);
} else {
list_move(&qh->qh_list_entry,
&hcd->periodic_sched_inactive);
}
}
}
SPIN_UNLOCK_IRQRESTORE(&hcd->lock, 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;
SPIN_LOCK_IRQSAVE(&dwc_otg_hcd->lock, 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) {
goto done;
}
ep->hcpriv = 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:
SPIN_UNLOCK_IRQRESTORE(&dwc_otg_hcd->lock, flags);
return retval;
}
#endif /* DWC_DEVICE_ONLY */

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target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_pcd.c
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244
target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_pcd.h
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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
* $Revision: 1.2 $
* $Date: 2008-11-21 05:39:15 $
* $Change: 1103515 $
*
* 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_HOST_ONLY
#if !defined(__DWC_PCD_H__)
#define __DWC_PCD_H__
#include <linux/types.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/device.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
# include <linux/usb/ch9.h>
#else
# include <linux/usb_ch9.h>
#endif
#include <linux/usb_gadget.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
struct dwc_otg_device;
#include "dwc_otg_cil.h"
/**
* @file
*
* This file contains the structures, constants, and interfaces for
* the Perpherial Contoller Driver (PCD).
*
* The Peripheral Controller Driver (PCD) for Linux will implement the
* Gadget API, so that the existing Gadget drivers can be used. For
* the Mass Storage Function driver the File-backed USB Storage Gadget
* (FBS) driver will be used. The FBS driver supports the
* Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
* transports.
*
*/
/** Invalid DMA Address */
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
/** Maxpacket size for EP0 */
#define MAX_EP0_SIZE 64
/** Maxpacket size for any EP */
#define MAX_PACKET_SIZE 1024
/** Max Transfer size for any EP */
#define MAX_TRANSFER_SIZE 65535
/** Max DMA Descriptor count for any EP */
#define MAX_DMA_DESC_CNT 64
/**
* Get the pointer to the core_if from the pcd pointer.
*/
#define GET_CORE_IF( _pcd ) (_pcd->otg_dev->core_if)
/**
* States of EP0.
*/
typedef enum ep0_state
{
EP0_DISCONNECT, /* no host */
EP0_IDLE,
EP0_IN_DATA_PHASE,
EP0_OUT_DATA_PHASE,
EP0_IN_STATUS_PHASE,
EP0_OUT_STATUS_PHASE,
EP0_STALL,
} ep0state_e;
/** Fordward declaration.*/
struct dwc_otg_pcd;
/** DWC_otg iso request structure.
*
*/
typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
/** PCD EP structure.
* This structure describes an EP, there is an array of EPs in the PCD
* structure.
*/
typedef struct dwc_otg_pcd_ep
{
/** USB EP data */
struct usb_ep ep;
/** USB EP Descriptor */
const struct usb_endpoint_descriptor *desc;
/** queue of dwc_otg_pcd_requests. */
struct list_head queue;
unsigned stopped : 1;
unsigned disabling : 1;
unsigned dma : 1;
unsigned queue_sof : 1;
#ifdef DWC_EN_ISOC
/** DWC_otg Isochronous Transfer */
struct usb_iso_request* iso_req;
#endif //DWC_EN_ISOC
/** DWC_otg ep data. */
dwc_ep_t dwc_ep;
/** Pointer to PCD */
struct dwc_otg_pcd *pcd;
}dwc_otg_pcd_ep_t;
/** DWC_otg PCD Structure.
* This structure encapsulates the data for the dwc_otg PCD.
*/
typedef struct dwc_otg_pcd
{
/** USB gadget */
struct usb_gadget gadget;
/** USB gadget driver pointer*/
struct usb_gadget_driver *driver;
/** The DWC otg device pointer. */
struct dwc_otg_device *otg_dev;
/** State of EP0 */
ep0state_e ep0state;
/** EP0 Request is pending */
unsigned ep0_pending : 1;
/** Indicates when SET CONFIGURATION Request is in process */
unsigned request_config : 1;
/** The state of the Remote Wakeup Enable. */
unsigned remote_wakeup_enable : 1;
/** The state of the B-Device HNP Enable. */
unsigned b_hnp_enable : 1;
/** The state of A-Device HNP Support. */
unsigned a_hnp_support : 1;
/** The state of the A-Device Alt HNP support. */
unsigned a_alt_hnp_support : 1;
/** Count of pending Requests */
unsigned request_pending;
/** SETUP packet for EP0
* This structure is allocated as a DMA buffer on PCD initialization
* with enough space for up to 3 setup packets.
*/
union
{
struct usb_ctrlrequest req;
uint32_t d32[2];
} *setup_pkt;
dma_addr_t setup_pkt_dma_handle;
/** 2-byte dma buffer used to return status from GET_STATUS */
uint16_t *status_buf;
dma_addr_t status_buf_dma_handle;
/** EP0 */
dwc_otg_pcd_ep_t ep0;
/** Array of IN EPs. */
dwc_otg_pcd_ep_t in_ep[ MAX_EPS_CHANNELS - 1];
/** Array of OUT EPs. */
dwc_otg_pcd_ep_t out_ep[ MAX_EPS_CHANNELS - 1];
/** number of valid EPs in the above array. */
// unsigned num_eps : 4;
spinlock_t lock;
/** Timer for SRP. If it expires before SRP is successful
* clear the SRP. */
struct timer_list srp_timer;
/** Tasklet to defer starting of TEST mode transmissions until
* Status Phase has been completed.
*/
struct tasklet_struct test_mode_tasklet;
/** Tasklet to delay starting of xfer in DMA mode */
struct tasklet_struct *start_xfer_tasklet;
/** The test mode to enter when the tasklet is executed. */
unsigned test_mode;
} dwc_otg_pcd_t;
/** DWC_otg request structure.
* This structure is a list of requests.
*/
typedef struct
{
struct usb_request req; /**< USB Request. */
struct list_head queue; /**< queue of these requests. */
} dwc_otg_pcd_request_t;
extern int dwc_otg_pcd_init(struct device *dev);
//extern void dwc_otg_pcd_remove( struct dwc_otg_device *_otg_dev );
extern void dwc_otg_pcd_remove( struct device *dev);
extern int32_t dwc_otg_pcd_handle_intr( dwc_otg_pcd_t *pcd );
extern void dwc_otg_pcd_start_srp_timer(dwc_otg_pcd_t *pcd );
extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t *pcd);
extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t *pcd, int set);
extern void dwc_otg_iso_buffer_done(dwc_otg_pcd_ep_t *ep, dwc_otg_pcd_iso_request_t *req);
extern void dwc_otg_request_done(dwc_otg_pcd_ep_t *_ep, dwc_otg_pcd_request_t *req,
int status);
extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t *_ep);
extern void dwc_otg_pcd_update_otg(dwc_otg_pcd_t *_pcd,
const unsigned reset);
#endif
#endif /* DWC_HOST_ONLY */

3654
target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_pcd_intr.c
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2075
target/linux/ramips/files/drivers/usb/dwc_otg/dwc_otg_regs.h
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260
target/linux/ramips/files/drivers/usb/dwc_otg/linux/dwc_otg_plat.h
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@ -0,0 +1,260 @@
/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/platform/dwc_otg_plat.h $
* $Revision: 1.2 $
* $Date: 2008-11-21 05:39:16 $
* $Change: 1064915 $
*
* 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_ARM_ARCH__)
//#error "The contents of this file is Linux specific!!!"
//#endif
/**
* 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

16
target/linux/ramips/patches-2.6.39/105-usb_dwc_otg.patch
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@ -0,0 +1,16 @@
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -163,4 +163,6 @@
source "drivers/usb/otg/Kconfig"
+source "drivers/usb/dwc_otg/Kconfig"
+
endif # USB_SUPPORT
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -45,3 +45,4 @@
obj-$(CONFIG_USB_ATM) += atm/
obj-$(CONFIG_USB_SPEEDTOUCH) += atm/
+obj-$(CONFIG_DWC_OTG) += dwc_otg/

2
target/linux/ramips/rt305x/config-2.6.39
Unescape Escape View File

@ -28,6 +28,7 @@ CONFIG_CSRC_R4K=y
CONFIG_CSRC_R4K_LIB=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DMA_NONCOHERENT=y
# CONFIG_DWC_OTG is not set
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_ATOMIC64=y
CONFIG_GENERIC_CLOCKEVENTS=y
@ -120,7 +121,6 @@ CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
# CONFIG_USB_ARCH_HAS_EHCI is not set
# CONFIG_USB_ARCH_HAS_HCD is not set
# CONFIG_USB_ARCH_HAS_OHCI is not set
CONFIG_USB_SUPPORT=y
CONFIG_XZ_DEC=y

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