[openwrt/svn-archive/archive.git] / target / linux / lantiq / patches-3.3 / 0044-MIPS-lantiq-adds-dwc_otg.patch

From 5bd209cb056fcf421710a1cd1521596a242bc569 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Fri, 30 Sep 2011 14:37:36 +0200
Subject: [PATCH 44/70] MIPS: lantiq: adds dwc_otg

---
 drivers/usb/Kconfig                     |    2 +
 drivers/usb/Makefile                    |    2 +
 drivers/usb/core/hub.c                  |    4 +-
 drivers/usb/dwc_otg/Kconfig             |   37 +
 drivers/usb/dwc_otg/Makefile            |   39 +
 drivers/usb/dwc_otg/dwc_otg_attr.c      |  802 ++++++++
 drivers/usb/dwc_otg/dwc_otg_attr.h      |   67 +
 drivers/usb/dwc_otg/dwc_otg_cil.c       | 3025 +++++++++++++++++++++++++++++++
 drivers/usb/dwc_otg/dwc_otg_cil.h       |  911 ++++++++++
 drivers/usb/dwc_otg/dwc_otg_cil_ifx.h   |   58 +
 drivers/usb/dwc_otg/dwc_otg_cil_intr.c  |  708 ++++++++
 drivers/usb/dwc_otg/dwc_otg_driver.c    | 1274 +++++++++++++
 drivers/usb/dwc_otg/dwc_otg_driver.h    |   84 +
 drivers/usb/dwc_otg/dwc_otg_hcd.c       | 2870 +++++++++++++++++++++++++++++
 drivers/usb/dwc_otg/dwc_otg_hcd.h       |  676 +++++++
 drivers/usb/dwc_otg/dwc_otg_hcd_intr.c  | 1841 +++++++++++++++++++
 drivers/usb/dwc_otg/dwc_otg_hcd_queue.c |  794 ++++++++
 drivers/usb/dwc_otg/dwc_otg_ifx.c       |  100 +
 drivers/usb/dwc_otg/dwc_otg_ifx.h       |   85 +
 drivers/usb/dwc_otg/dwc_otg_plat.h      |  269 +++
 drivers/usb/dwc_otg/dwc_otg_regs.h      | 1797 ++++++++++++++++++
 21 files changed, 15443 insertions(+), 2 deletions(-)
 create mode 100644 drivers/usb/dwc_otg/Kconfig
 create mode 100644 drivers/usb/dwc_otg/Makefile
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_attr.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_attr.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_cil.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_cil.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_cil_ifx.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_cil_intr.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_driver.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_driver.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_hcd.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_hcd.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_hcd_intr.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_hcd_queue.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_ifx.c
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_ifx.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_plat.h
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_regs.h

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 75823a1..8469e23 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -130,6 +130,8 @@ source "drivers/usb/wusbcore/Kconfig"
 
 source "drivers/usb/host/Kconfig"
 
+source "drivers/usb/dwc_otg/Kconfig"
+
 source "drivers/usb/musb/Kconfig"
 
 source "drivers/usb/renesas_usbhs/Kconfig"
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 53a7bc0..d46b792 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -32,6 +32,8 @@ obj-$(CONFIG_USB_C67X00_HCD)  += c67x00/
 
 obj-$(CONFIG_USB_WUSB)         += wusbcore/
 
+obj-$(CONFIG_DWC_OTG)           += dwc_otg/
+
 obj-$(CONFIG_USB_ACM)          += class/
 obj-$(CONFIG_USB_PRINTER)      += class/
 obj-$(CONFIG_USB_WDM)          += class/
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 265c2f6..5d39022 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2938,11 +2938,11 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
                udev->ttport = hdev->ttport;
        } else if (udev->speed != USB_SPEED_HIGH
                        && hdev->speed == USB_SPEED_HIGH) {
-               if (!hub->tt.hub) {
+/*             if (!hub->tt.hub) {
                        dev_err(&udev->dev, "parent hub has no TT\n");
                        retval = -EINVAL;
                        goto fail;
-               }
+               }*/
                udev->tt = &hub->tt;
                udev->ttport = port1;
        }
diff --git a/drivers/usb/dwc_otg/Kconfig b/drivers/usb/dwc_otg/Kconfig
new file mode 100644
index 0000000..e018490
--- /dev/null
+++ b/drivers/usb/dwc_otg/Kconfig
@@ -0,0 +1,37 @@
+config DWC_OTG
+        tristate "Synopsis DWC_OTG support"
+        depends on USB
+        help
+          This driver supports Synopsis DWC_OTG IP core
+                 embebbed on many SOCs (ralink, infineon, etc)
+
+choice
+        prompt "USB Operation Mode"
+        depends on DWC_OTG
+        default DWC_OTG_HOST_ONLY
+
+config DWC_OTG_HOST_ONLY
+        bool "HOST ONLY MODE"
+        depends on DWC_OTG
+
+#config DWC_OTG_DEVICE_ONLY
+#        bool "DEVICE ONLY MODE"
+#        depends on DWC_OTG
+endchoice
+
+choice
+        prompt "Platform"
+        depends on DWC_OTG
+        default DWC_OTG_LANTIQ
+
+config DWC_OTG_LANTIQ
+        bool "Lantiq"
+        depends on LANTIQ
+        help
+          Danube USB Host Controller
+                 platform support
+endchoice
+
+config DWC_OTG_DEBUG
+        bool "Enable debug mode"
+        depends on DWC_OTG
diff --git a/drivers/usb/dwc_otg/Makefile b/drivers/usb/dwc_otg/Makefile
new file mode 100644
index 0000000..d4d2355
--- /dev/null
+++ b/drivers/usb/dwc_otg/Makefile
@@ -0,0 +1,39 @@
+#
+# Makefile for DWC_otg Highspeed USB controller driver
+#
+
+ifeq ($(CONFIG_DWC_OTG_DEBUG),y)
+EXTRA_CFLAGS   += -DDEBUG
+endif
+
+# Use one of the following flags to compile the software in host-only or
+# device-only mode based on the configuration selected by the user
+ifeq ($(CONFIG_DWC_OTG_HOST_ONLY),y)
+       EXTRA_CFLAGS   += -DDWC_OTG_HOST_ONLY -DDWC_HOST_ONLY
+       EXTRA_CFLAGS   += -DDWC_OTG_EN_ISOC -DDWC_EN_ISOC
+else ifeq ($(CONFIG_DWC_OTG_DEVICE_ONLY),y)
+       EXTRA_CFLAGS   += -DDWC_OTG_DEVICE_ONLY
+else
+       EXTRA_CFLAGS   += -DDWC_OTG_MODE
+endif
+
+#      EXTRA_CFLAGS += -DDWC_HS_ELECT_TST
+#      EXTRA_CFLAGS    += -DDWC_OTG_EXT_CHG_PUMP
+
+ifeq ($(CONFIG_DWC_OTG_LANTIQ),y)
+     EXTRA_CFLAGS += -Dlinux -D__LINUX__ -DDWC_OTG_IFX -DDWC_OTG_HOST_ONLY -DDWC_HOST_ONLY  -D__KERNEL__ 
+endif
+ifeq ($(CONFIG_DWC_OTG_LANTIQ),m)
+     EXTRA_CFLAGS += -Dlinux -D__LINUX__ -DDWC_OTG_IFX -DDWC_HOST_ONLY -DMODULE -D__KERNEL__  -DDEBUG
+endif
+
+obj-$(CONFIG_DWC_OTG)  := dwc_otg.o
+dwc_otg-objs    := dwc_otg_hcd.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o
+#dwc_otg-objs  += dwc_otg_pcd.o dwc_otg_pcd_intr.o 
+dwc_otg-objs    += dwc_otg_attr.o 
+dwc_otg-objs    += dwc_otg_cil.o dwc_otg_cil_intr.o
+dwc_otg-objs   += dwc_otg_ifx.o
+dwc_otg-objs    += dwc_otg_driver.o
+
+#obj-$(CONFIG_DWC_OTG_IFX)     := dwc_otg_ifx.o
+#dwc_otg_ifx-objs              := dwc_otg_ifx.o
diff --git a/drivers/usb/dwc_otg/dwc_otg_attr.c b/drivers/usb/dwc_otg/dwc_otg_attr.c
new file mode 100644
index 0000000..4675a5c
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_attr.c
@@ -0,0 +1,802 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_attr.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 537387 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file 
+ *
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.  The Linux driver attributes
+ * feature will be used to provide the Linux Diagnostic
+ * Interface. These attributes are accessed through sysfs.
+ */
+
+/** @page "Linux Module Attributes" 
+ *
+ * The Linux module attributes feature is used to provide the Linux
+ * Diagnostic Interface.  These attributes are accessed through sysfs.
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.
+
+
+ The following table shows the attributes.
+ <table>
+ <tr>
+ <td><b> Name</b></td>
+ <td><b> Description</b></td>
+ <td><b> Access</b></td>
+ </tr>
+ 
+ <tr>
+ <td> mode </td>
+ <td> Returns the current mode: 0 for device mode, 1 for host mode</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> hnpcapable </td>
+ <td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> srpcapable </td>
+ <td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> hnp </td>
+ <td> Initiates the Host Negotiation Protocol.  Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> srp </td>
+ <td> Initiates the Session Request Protocol.  Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> buspower </td>
+ <td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> bussuspend </td>
+ <td> Suspends the USB bus.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> busconnected </td>
+ <td> Gets the connection status of the bus</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> gotgctl </td>
+ <td> Gets or sets the Core Control Status Register.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> gusbcfg </td>
+ <td> Gets or sets the Core USB Configuration Register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> grxfsiz </td>
+ <td> Gets or sets the Receive FIFO Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> gnptxfsiz </td>
+ <td> Gets or sets the non-periodic Transmit Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> gpvndctl </td>
+ <td> Gets or sets the PHY Vendor Control Register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> ggpio </td>
+ <td> Gets the value in the lower 16-bits of the General Purpose IO Register
+ or sets the upper 16 bits.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> guid </td>
+ <td> Gets or sets the value of the User ID Register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> gsnpsid </td>
+ <td> Gets the value of the Synopsys ID Regester</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> devspeed </td>
+ <td> Gets or sets the device speed setting in the DCFG register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> enumspeed </td>
+ <td> Gets the device enumeration Speed.</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> hptxfsiz </td>
+ <td> Gets the value of the Host Periodic Transmit FIFO</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> hprt0 </td>
+ <td> Gets or sets the value in the Host Port Control and Status Register</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> regoffset </td>
+ <td> Sets the register offset for the next Register Access</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> regvalue </td>
+ <td> Gets or sets the value of the register at the offset in the regoffset attribute.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> remote_wakeup </td>
+ <td> On read, shows the status of Remote Wakeup. On write, initiates a remote
+ wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote
+ Wakeup signalling bit in the Device Control Register is set for 1
+ milli-second.</td>
+ <td> Read/Write</td>
+ </tr>
+ 
+ <tr>
+ <td> regdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> hcddump </td>
+ <td> Dumps the current HCD state.</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> hcd_frrem </td>
+ <td> Shows the average value of the Frame Remaining
+ field in the Host Frame Number/Frame Remaining register when an SOF interrupt
+ occurs. This can be used to determine the average interrupt latency. Also
+ shows the average Frame Remaining value for start_transfer and the "a" and
+ "b" sample points. The "a" and "b" sample points may be used during debugging
+ bto determine how long it takes to execute a section of the HCD code.</td>
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> rd_reg_test </td>
+ <td> Displays the time required to read the GNPTXFSIZ register many times
+ (the output shows the number of times the register is read).
+ <td> Read</td>
+ </tr>
+ 
+ <tr>
+ <td> wr_reg_test </td>
+ <td> Displays the time required to write the GNPTXFSIZ register many times
+ (the output shows the number of times the register is written).
+ <td> Read</td>
+ </tr>
+ 
+ </table>
+ 
+ Example usage:
+ To get the current mode:
+ cat /sys/devices/lm0/mode
+ 
+ To power down the USB:
+ echo 0 > /sys/devices/lm0/buspower
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/stat.h>  /* permission constants */
+
+#include <asm/io.h>
+
+#include "dwc_otg_plat.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_driver.h"
+// #include "dwc_otg_pcd.h"
+#include "dwc_otg_hcd.h"
+
+// 20070316, winder added.
+#ifndef SZ_256K
+#define SZ_256K                         0x00040000
+#endif
+
+/*
+ * MACROs for defining sysfs attribute
+ */
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+       uint32_t val; \
+       val = dwc_read_reg32 (_addr_); \
+       val = (val & (_mask_)) >> _shift_; \
+       return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, const char *buf, size_t count) \
+{ \
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+       uint32_t set = simple_strtoul(buf, NULL, 16); \
+       uint32_t clear = set; \
+       clear = ((~clear) << _shift_) & _mask_; \
+       set = (set << _shift_) & _mask_; \
+       dev_dbg(_dev, "Storing Address=0x%08x Set=0x%08x Clear=0x%08x\n", (uint32_t)_addr_, set, clear); \
+       dwc_modify_reg32(_addr_, clear, set); \
+       return count; \
+}
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+/*
+ * MACROs for defining sysfs attribute for 32-bit registers
+ */
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+       uint32_t val; \
+       val = dwc_read_reg32 (_addr_); \
+       return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, const char *buf, size_t count) \
+{ \
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+       uint32_t val = simple_strtoul(buf, NULL, 16); \
+       dev_dbg(_dev, "Storing Address=0x%08x Val=0x%08x\n", (uint32_t)_addr_, val); \
+       dwc_write_reg32(_addr_, val); \
+       return count; \
+}
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+
+/** @name Functions for Show/Store of Attributes */
+/**@{*/
+
+/**
+ * Show the register offset of the Register Access.
+ */
+static ssize_t regoffset_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       return snprintf(buf, sizeof("0xFFFFFFFF\n")+1,"0x%08x\n", otg_dev->reg_offset);
+}
+
+/**
+ * Set the register offset for the next Register Access        Read/Write
+ */
+static ssize_t regoffset_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                                size_t count ) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       uint32_t offset = simple_strtoul(buf, NULL, 16);
+       //dev_dbg(_dev, "Offset=0x%08x\n", offset);
+       if (offset < SZ_256K ) {
+               otg_dev->reg_offset = offset;
+       }
+       else {
+               dev_err( _dev, "invalid offset\n" );
+       }
+
+       return count;
+}
+DEVICE_ATTR(regoffset, S_IRUGO|S_IWUSR, regoffset_show, regoffset_store);
+
+/**
+ * Show the value of the register at the offset in the reg_offset
+ * attribute.
+ */
+static ssize_t regvalue_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       uint32_t val;
+       volatile uint32_t *addr;
+        
+       if (otg_dev->reg_offset != 0xFFFFFFFF &&  0 != otg_dev->base) {
+               /* Calculate the address */
+               addr = (uint32_t*)(otg_dev->reg_offset + 
+                                  (uint8_t*)otg_dev->base);
+               //dev_dbg(_dev, "@0x%08x\n", (unsigned)addr); 
+               val = dwc_read_reg32( addr );             
+               return snprintf(buf, sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n")+1,
+                               "Reg@0x%06x = 0x%08x\n", 
+                               otg_dev->reg_offset, val);
+       }
+       else {
+               dev_err(_dev, "Invalid offset (0x%0x)\n", 
+                       otg_dev->reg_offset);
+               return sprintf(buf, "invalid offset\n" );
+       }
+}
+
+/**
+ * Store the value in the register at the offset in the reg_offset
+ * attribute.
+ * 
+ */
+static ssize_t regvalue_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                               size_t count ) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       volatile uint32_t * addr;
+       uint32_t val = simple_strtoul(buf, NULL, 16);
+       //dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val);
+       if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) {
+               /* Calculate the address */
+               addr = (uint32_t*)(otg_dev->reg_offset + 
+                                  (uint8_t*)otg_dev->base);
+               //dev_dbg(_dev, "@0x%08x\n", (unsigned)addr); 
+               dwc_write_reg32( addr, val );
+       }
+       else {
+               dev_err(_dev, "Invalid Register Offset (0x%08x)\n", 
+                       otg_dev->reg_offset);
+       }
+       return count;
+}
+DEVICE_ATTR(regvalue,  S_IRUGO|S_IWUSR, regvalue_show, regvalue_store);
+
+/*
+ * Attributes
+ */
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<20),20,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<9),9,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<8),8,"Mode");
+
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected,otg_dev->core_if->host_if->hprt0,0x01,0,"Bus Connected");
+
+DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl,&(otg_dev->core_if->core_global_regs->gotgctl),"GOTGCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,&(otg_dev->core_if->core_global_regs->gusbcfg),"GUSBCFG");
+DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,&(otg_dev->core_if->core_global_regs->grxfsiz),"GRXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,&(otg_dev->core_if->core_global_regs->gnptxfsiz),"GNPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,&(otg_dev->core_if->core_global_regs->gpvndctl),"GPVNDCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,&(otg_dev->core_if->core_global_regs->ggpio),"GGPIO");
+DWC_OTG_DEVICE_ATTR_REG32_RW(guid,&(otg_dev->core_if->core_global_regs->guid),"GUID");
+DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,&(otg_dev->core_if->core_global_regs->gsnpsid),"GSNPSID");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dcfg),0x3,0,"Device Speed");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dsts),0x6,1,"Device Enumeration Speed");
+
+DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,&(otg_dev->core_if->core_global_regs->hptxfsiz),"HPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0,otg_dev->core_if->host_if->hprt0,"HPRT0");
+
+
+/**
+ * @todo Add code to initiate the HNP.
+ */
+/**
+ * Show the HNP status bit
+ */
+static ssize_t hnp_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       gotgctl_data_t val;
+       val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl));
+       return sprintf (buf, "HstNegScs = 0x%x\n", val.b.hstnegscs);
+}
+
+/**
+ * Set the HNP Request bit
+ */
+static ssize_t hnp_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                         size_t count ) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       uint32_t in = simple_strtoul(buf, NULL, 16);
+       uint32_t *addr = (uint32_t *)&(otg_dev->core_if->core_global_regs->gotgctl);
+       gotgctl_data_t mem;
+       mem.d32 = dwc_read_reg32(addr);
+       mem.b.hnpreq = in;
+       dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
+       dwc_write_reg32(addr, mem.d32);
+       return count;
+}
+DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
+
+/**
+ * @todo Add code to initiate the SRP.
+ */
+/**
+ * Show the SRP status bit
+ */
+static ssize_t srp_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       gotgctl_data_t val;
+       val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl));
+       return sprintf (buf, "SesReqScs = 0x%x\n", val.b.sesreqscs);
+#else
+       return sprintf(buf, "Host Only Mode!\n");
+#endif
+}
+
+/**
+ * Set the SRP Request bit
+ */
+static ssize_t srp_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                         size_t count ) 
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       dwc_otg_pcd_initiate_srp(otg_dev->pcd);
+#endif
+       return count;
+}
+DEVICE_ATTR(srp, 0644, srp_show, srp_store);
+
+/**
+ * @todo Need to do more for power on/off?
+ */
+/**
+ * Show the Bus Power status
+ */
+static ssize_t buspower_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       hprt0_data_t val;
+       val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0);
+       return sprintf (buf, "Bus Power = 0x%x\n", val.b.prtpwr);
+}
+
+
+/**
+ * Set the Bus Power status
+ */
+static ssize_t buspower_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                               size_t count ) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       uint32_t on = simple_strtoul(buf, NULL, 16);
+       uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0;
+       hprt0_data_t mem;
+
+       mem.d32 = dwc_read_reg32(addr);
+       mem.b.prtpwr = on;
+
+       //dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
+       dwc_write_reg32(addr, mem.d32);
+
+       return count;
+}
+DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
+
+/**
+ * @todo Need to do more for suspend?
+ */
+/**
+ * Show the Bus Suspend status
+ */
+static ssize_t bussuspend_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       hprt0_data_t val;
+       val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0);
+       return sprintf (buf, "Bus Suspend = 0x%x\n", val.b.prtsusp);
+}
+
+/**
+ * Set the Bus Suspend status
+ */
+static ssize_t bussuspend_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                                 size_t count ) 
+{
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       uint32_t in = simple_strtoul(buf, NULL, 16);
+       uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0;
+       hprt0_data_t mem;
+       mem.d32 = dwc_read_reg32(addr);
+       mem.b.prtsusp = in;
+       dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
+       dwc_write_reg32(addr, mem.d32);
+       return count;
+}
+DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
+
+/**
+ * Show the status of Remote Wakeup.
+ */
+static ssize_t remote_wakeup_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       dctl_data_t val;
+       val.d32 = dwc_read_reg32( &otg_dev->core_if->dev_if->dev_global_regs->dctl);
+       return sprintf( buf, "Remote Wakeup = %d Enabled = %d\n", 
+                        val.b.rmtwkupsig, otg_dev->pcd->remote_wakeup_enable);
+#else
+       return sprintf(buf, "Host Only Mode!\n");
+#endif
+}
+
+/**
+ * Initiate a remote wakeup of the host.  The Device control register
+ * Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
+ * flag is set.
+ * 
+ */
+static ssize_t remote_wakeup_store( struct device *_dev, struct device_attribute *attr, const char *buf, 
+                                    size_t count ) 
+{
+#ifndef DWC_HOST_ONLY
+        uint32_t val = simple_strtoul(buf, NULL, 16);        
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       if (val&1) {
+               dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
+       }
+       else {
+               dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
+       }
+#endif
+       return count;
+}
+DEVICE_ATTR(remote_wakeup,  S_IRUGO|S_IWUSR, remote_wakeup_show, 
+            remote_wakeup_store);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t regdump_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+#ifdef DEBUG
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       printk("%s otg_dev=0x%p\n", __FUNCTION__, otg_dev);
+
+        dwc_otg_dump_global_registers( otg_dev->core_if);
+        if (dwc_otg_is_host_mode(otg_dev->core_if)) {
+                dwc_otg_dump_host_registers( otg_dev->core_if);
+        } else {
+                dwc_otg_dump_dev_registers( otg_dev->core_if);
+        }
+#endif
+
+       return sprintf( buf, "Register Dump\n" );
+}
+
+DEVICE_ATTR(regdump, S_IRUGO|S_IWUSR, regdump_show, 0);
+
+/**
+ * Dump the current hcd state.
+ */
+static ssize_t hcddump_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+#ifndef DWC_DEVICE_ONLY
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       dwc_otg_hcd_dump_state(otg_dev->hcd);
+#endif
+       return sprintf( buf, "HCD Dump\n" );
+}
+
+DEVICE_ATTR(hcddump, S_IRUGO|S_IWUSR, hcddump_show, 0);
+
+/**
+ * Dump the average frame remaining at SOF. This can be used to
+ * determine average interrupt latency. Frame remaining is also shown for
+ * start transfer and two additional sample points.
+ */
+static ssize_t hcd_frrem_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+#ifndef DWC_DEVICE_ONLY
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       dwc_otg_hcd_dump_frrem(otg_dev->hcd);
+#endif
+       return sprintf( buf, "HCD Dump Frame Remaining\n" );
+}
+
+DEVICE_ATTR(hcd_frrem, S_IRUGO|S_IWUSR, hcd_frrem_show, 0);
+
+/**
+ * Displays the time required to read the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is read).
+ */
+#define RW_REG_COUNT 10000000
+#define MSEC_PER_JIFFIE 1000/HZ        
+static ssize_t rd_reg_test_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+       int i;
+       int time;
+       int start_jiffies;
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+       printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+              HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+       start_jiffies = jiffies;
+       for (i = 0; i < RW_REG_COUNT; i++) {
+               dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz);
+       }
+       time = jiffies - start_jiffies;
+       return sprintf( buf, "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+                       RW_REG_COUNT, time * MSEC_PER_JIFFIE, time );
+}
+
+DEVICE_ATTR(rd_reg_test, S_IRUGO|S_IWUSR, rd_reg_test_show, 0);
+
+/**
+ * Displays the time required to write the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is written).
+ */
+static ssize_t wr_reg_test_show( struct device *_dev, struct device_attribute *attr, char *buf) 
+{
+       int i;
+       int time;
+       int start_jiffies;
+        dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       uint32_t reg_val;
+
+       printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+              HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+       reg_val = dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz);
+       start_jiffies = jiffies;
+       for (i = 0; i < RW_REG_COUNT; i++) {
+               dwc_write_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz, reg_val);
+       }
+       time = jiffies - start_jiffies;
+       return sprintf( buf, "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+                       RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
+}
+
+DEVICE_ATTR(wr_reg_test, S_IRUGO|S_IWUSR, wr_reg_test_show, 0);
+/**@}*/
+
+/**
+ * Create the device files
+ */
+void dwc_otg_attr_create (struct device *_dev)
+{
+    int retval;
+    
+    retval = device_create_file(_dev, &dev_attr_regoffset);
+    retval += device_create_file(_dev, &dev_attr_regvalue);
+    retval += device_create_file(_dev, &dev_attr_mode);
+    retval += device_create_file(_dev, &dev_attr_hnpcapable);
+    retval += device_create_file(_dev, &dev_attr_srpcapable);
+    retval += device_create_file(_dev, &dev_attr_hnp);
+    retval += device_create_file(_dev, &dev_attr_srp);
+    retval += device_create_file(_dev, &dev_attr_buspower);
+    retval += device_create_file(_dev, &dev_attr_bussuspend);
+    retval += device_create_file(_dev, &dev_attr_busconnected);
+    retval += device_create_file(_dev, &dev_attr_gotgctl);
+    retval += device_create_file(_dev, &dev_attr_gusbcfg);
+    retval += device_create_file(_dev, &dev_attr_grxfsiz);
+    retval += device_create_file(_dev, &dev_attr_gnptxfsiz);
+    retval += device_create_file(_dev, &dev_attr_gpvndctl);
+    retval += device_create_file(_dev, &dev_attr_ggpio);
+    retval += device_create_file(_dev, &dev_attr_guid);
+    retval += device_create_file(_dev, &dev_attr_gsnpsid);
+    retval += device_create_file(_dev, &dev_attr_devspeed);
+    retval += device_create_file(_dev, &dev_attr_enumspeed);
+    retval += device_create_file(_dev, &dev_attr_hptxfsiz);
+    retval += device_create_file(_dev, &dev_attr_hprt0);
+    retval += device_create_file(_dev, &dev_attr_remote_wakeup);
+    retval += device_create_file(_dev, &dev_attr_regdump);
+    retval += device_create_file(_dev, &dev_attr_hcddump);
+    retval += device_create_file(_dev, &dev_attr_hcd_frrem);
+    retval += device_create_file(_dev, &dev_attr_rd_reg_test);
+    retval += device_create_file(_dev, &dev_attr_wr_reg_test);
+
+    if(retval != 0)
+    {
+        DWC_PRINT("cannot create sysfs device files.\n");
+        // DWC_PRINT("killing own sysfs device files!\n");
+        dwc_otg_attr_remove(_dev);
+    }
+}
+
+/**
+ * Remove the device files
+ */
+void dwc_otg_attr_remove (struct device *_dev)
+{
+       device_remove_file(_dev, &dev_attr_regoffset);
+       device_remove_file(_dev, &dev_attr_regvalue);
+       device_remove_file(_dev, &dev_attr_mode);
+       device_remove_file(_dev, &dev_attr_hnpcapable);
+       device_remove_file(_dev, &dev_attr_srpcapable);
+       device_remove_file(_dev, &dev_attr_hnp);
+       device_remove_file(_dev, &dev_attr_srp);
+       device_remove_file(_dev, &dev_attr_buspower);
+       device_remove_file(_dev, &dev_attr_bussuspend);
+       device_remove_file(_dev, &dev_attr_busconnected);
+       device_remove_file(_dev, &dev_attr_gotgctl);
+       device_remove_file(_dev, &dev_attr_gusbcfg);
+       device_remove_file(_dev, &dev_attr_grxfsiz);
+       device_remove_file(_dev, &dev_attr_gnptxfsiz);
+       device_remove_file(_dev, &dev_attr_gpvndctl);
+       device_remove_file(_dev, &dev_attr_ggpio);
+       device_remove_file(_dev, &dev_attr_guid);
+       device_remove_file(_dev, &dev_attr_gsnpsid);
+       device_remove_file(_dev, &dev_attr_devspeed);
+       device_remove_file(_dev, &dev_attr_enumspeed);
+       device_remove_file(_dev, &dev_attr_hptxfsiz);
+       device_remove_file(_dev, &dev_attr_hprt0);      
+       device_remove_file(_dev, &dev_attr_remote_wakeup);      
+       device_remove_file(_dev, &dev_attr_regdump);
+       device_remove_file(_dev, &dev_attr_hcddump);
+       device_remove_file(_dev, &dev_attr_hcd_frrem);
+       device_remove_file(_dev, &dev_attr_rd_reg_test);
+       device_remove_file(_dev, &dev_attr_wr_reg_test);
+}
diff --git a/drivers/usb/dwc_otg/dwc_otg_attr.h b/drivers/usb/dwc_otg/dwc_otg_attr.h
new file mode 100644
index 0000000..4bbf7df0
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_attr.h
@@ -0,0 +1,67 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_attr.h $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 510275 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_ATTR_H__)
+#define __DWC_OTG_ATTR_H__
+
+/** @file
+ * This file contains the interface to the Linux device attributes.
+ */
+extern struct device_attribute dev_attr_regoffset;
+extern struct device_attribute dev_attr_regvalue;
+
+extern struct device_attribute dev_attr_mode;
+extern struct device_attribute dev_attr_hnpcapable;
+extern struct device_attribute dev_attr_srpcapable;
+extern struct device_attribute dev_attr_hnp;
+extern struct device_attribute dev_attr_srp;
+extern struct device_attribute dev_attr_buspower;
+extern struct device_attribute dev_attr_bussuspend;
+extern struct device_attribute dev_attr_busconnected;
+extern struct device_attribute dev_attr_gotgctl;
+extern struct device_attribute dev_attr_gusbcfg;
+extern struct device_attribute dev_attr_grxfsiz;
+extern struct device_attribute dev_attr_gnptxfsiz;
+extern struct device_attribute dev_attr_gpvndctl;
+extern struct device_attribute dev_attr_ggpio;
+extern struct device_attribute dev_attr_guid;
+extern struct device_attribute dev_attr_gsnpsid;
+extern struct device_attribute dev_attr_devspeed;
+extern struct device_attribute dev_attr_enumspeed;
+extern struct device_attribute dev_attr_hptxfsiz;
+extern struct device_attribute dev_attr_hprt0;
+
+void dwc_otg_attr_create (struct device *_dev);
+void dwc_otg_attr_remove (struct device *_dev);
+
+#endif
diff --git a/drivers/usb/dwc_otg/dwc_otg_cil.c b/drivers/usb/dwc_otg/dwc_otg_cil.c
new file mode 100644
index 0000000..42c69eb
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_cil.c
@@ -0,0 +1,3025 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 631780 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file 
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * The CIL manages the memory map for the core so that the HCD and PCD
+ * don't have to do this separately. It also handles basic tasks like
+ * reading/writing the registers and data FIFOs in the controller.
+ * Some of the data access functions provide encapsulation of several
+ * operations required to perform a task, such as writing multiple
+ * registers to start a transfer. Finally, the CIL performs basic
+ * services that are not specific to either the host or device modes
+ * of operation. These services include management of the OTG Host
+ * Negotiation Protocol (HNP) and Session Request Protocol (SRP). A
+ * Diagnostic API is also provided to allow testing of the controller
+ * hardware.
+ *
+ * The Core Interface Layer has the following requirements:
+ * - Provides basic controller operations.
+ * - Minimal use of OS services.  
+ * - The OS services used will be abstracted by using inline functions
+ *   or macros.
+ *
+ */
+#include <asm/unaligned.h>
+
+#ifdef DEBUG
+#include <linux/jiffies.h>
+#endif
+
+#include "dwc_otg_plat.h"
+
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+
+/** 
+ * This function is called to initialize the DWC_otg CSR data
+ * structures.  The register addresses in the device and host
+ * structures are initialized from the base address supplied by the
+ * caller.  The calling function must make the OS calls to get the
+ * base address of the DWC_otg controller registers.  The core_params
+ * argument holds the parameters that specify how the core should be
+ * configured.
+ *
+ * @param[in] _reg_base_addr Base address of DWC_otg core registers
+ * @param[in] _core_params Pointer to the core configuration parameters 
+ *
+ */
+dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t *_reg_base_addr,
+                                    dwc_otg_core_params_t *_core_params)
+{
+    dwc_otg_core_if_t *core_if = 0;
+    dwc_otg_dev_if_t *dev_if = 0;
+    dwc_otg_host_if_t *host_if = 0;
+    uint8_t *reg_base = (uint8_t *)_reg_base_addr;
+    int i = 0;
+
+    DWC_DEBUGPL(DBG_CILV, "%s(%p,%p)\n", __func__, _reg_base_addr, _core_params);
+   
+    core_if = kmalloc( sizeof(dwc_otg_core_if_t), GFP_KERNEL);
+    if (core_if == 0) {
+        DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_core_if_t failed\n");
+        return 0;
+    }
+    memset(core_if, 0, sizeof(dwc_otg_core_if_t));
+        
+    core_if->core_params = _core_params;
+    core_if->core_global_regs = (dwc_otg_core_global_regs_t *)reg_base;
+    /*
+     * Allocate the Device Mode structures.
+     */
+    dev_if = kmalloc( sizeof(dwc_otg_dev_if_t), GFP_KERNEL);
+    if (dev_if == 0) {
+        DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_dev_if_t failed\n");
+        kfree( core_if );
+        return 0;
+    }
+
+    dev_if->dev_global_regs = 
+        (dwc_otg_device_global_regs_t *)(reg_base + DWC_DEV_GLOBAL_REG_OFFSET);
+        
+    for (i=0; i<MAX_EPS_CHANNELS; i++) {
+        dev_if->in_ep_regs[i] = (dwc_otg_dev_in_ep_regs_t *)
+            (reg_base + DWC_DEV_IN_EP_REG_OFFSET +
+            (i * DWC_EP_REG_OFFSET));
+                
+        dev_if->out_ep_regs[i] = (dwc_otg_dev_out_ep_regs_t *) 
+            (reg_base + DWC_DEV_OUT_EP_REG_OFFSET +
+            (i * DWC_EP_REG_OFFSET));
+        DWC_DEBUGPL(DBG_CILV, "in_ep_regs[%d]->diepctl=%p\n", 
+                            i, &dev_if->in_ep_regs[i]->diepctl);
+        DWC_DEBUGPL(DBG_CILV, "out_ep_regs[%d]->doepctl=%p\n", 
+                            i, &dev_if->out_ep_regs[i]->doepctl);
+    }
+    dev_if->speed = 0; // unknown
+    //dev_if->num_eps = MAX_EPS_CHANNELS;
+    //dev_if->num_perio_eps = 0;
+        
+    core_if->dev_if = dev_if;
+    /*
+    * Allocate the Host Mode structures.
+    */
+    host_if = kmalloc( sizeof(dwc_otg_host_if_t), GFP_KERNEL);
+    if (host_if == 0) {
+        DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_host_if_t failed\n");
+        kfree( dev_if );
+        kfree( core_if );
+        return 0;
+    }
+
+    host_if->host_global_regs = (dwc_otg_host_global_regs_t *)
+        (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET);
+    host_if->hprt0 = (uint32_t*)(reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET);
+    for (i=0; i<MAX_EPS_CHANNELS; i++) {
+        host_if->hc_regs[i] = (dwc_otg_hc_regs_t *)
+            (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET + 
+            (i * DWC_OTG_CHAN_REGS_OFFSET));
+        DWC_DEBUGPL(DBG_CILV, "hc_reg[%d]->hcchar=%p\n", 
+                            i, &host_if->hc_regs[i]->hcchar);
+    }
+    host_if->num_host_channels = MAX_EPS_CHANNELS;
+    core_if->host_if = host_if;
+
+    for (i=0; i<MAX_EPS_CHANNELS; i++) {
+        core_if->data_fifo[i] = 
+            (uint32_t *)(reg_base + DWC_OTG_DATA_FIFO_OFFSET + 
+            (i * DWC_OTG_DATA_FIFO_SIZE)); 
+        DWC_DEBUGPL(DBG_CILV, "data_fifo[%d]=0x%08x\n", 
+            i, (unsigned)core_if->data_fifo[i]);
+    } // for loop.
+        
+    core_if->pcgcctl = (uint32_t*)(reg_base + DWC_OTG_PCGCCTL_OFFSET);
+
+    /*
+     * Store the contents of the hardware configuration registers here for
+     * easy access later.
+     */
+    core_if->hwcfg1.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg1);
+    core_if->hwcfg2.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg2);
+    core_if->hwcfg3.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg3);
+    core_if->hwcfg4.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg4);
+
+    DWC_DEBUGPL(DBG_CILV,"hwcfg1=%08x\n",core_if->hwcfg1.d32);
+    DWC_DEBUGPL(DBG_CILV,"hwcfg2=%08x\n",core_if->hwcfg2.d32);
+    DWC_DEBUGPL(DBG_CILV,"hwcfg3=%08x\n",core_if->hwcfg3.d32);
+    DWC_DEBUGPL(DBG_CILV,"hwcfg4=%08x\n",core_if->hwcfg4.d32);
+        
+
+    DWC_DEBUGPL(DBG_CILV,"op_mode=%0x\n",core_if->hwcfg2.b.op_mode);
+    DWC_DEBUGPL(DBG_CILV,"arch=%0x\n",core_if->hwcfg2.b.architecture);
+    DWC_DEBUGPL(DBG_CILV,"num_dev_ep=%d\n",core_if->hwcfg2.b.num_dev_ep);
+    DWC_DEBUGPL(DBG_CILV,"num_host_chan=%d\n",core_if->hwcfg2.b.num_host_chan);
+    DWC_DEBUGPL(DBG_CILV,"nonperio_tx_q_depth=0x%0x\n",core_if->hwcfg2.b.nonperio_tx_q_depth);
+    DWC_DEBUGPL(DBG_CILV,"host_perio_tx_q_depth=0x%0x\n",core_if->hwcfg2.b.host_perio_tx_q_depth);
+    DWC_DEBUGPL(DBG_CILV,"dev_token_q_depth=0x%0x\n",core_if->hwcfg2.b.dev_token_q_depth);
+
+    DWC_DEBUGPL(DBG_CILV,"Total FIFO SZ=%d\n", core_if->hwcfg3.b.dfifo_depth);
+    DWC_DEBUGPL(DBG_CILV,"xfer_size_cntr_width=%0x\n", core_if->hwcfg3.b.xfer_size_cntr_width);
+
+    /*
+     * Set the SRP sucess bit for FS-I2c
+     */
+    core_if->srp_success = 0;
+    core_if->srp_timer_started = 0;
+       
+    return core_if;
+}
+/**
+ * This function frees the structures allocated by dwc_otg_cil_init().
+ * 
+ * @param[in] _core_if The core interface pointer returned from
+ * dwc_otg_cil_init().
+ *
+ */
+void dwc_otg_cil_remove( dwc_otg_core_if_t *_core_if )
+{
+        /* Disable all interrupts */
+        dwc_modify_reg32( &_core_if->core_global_regs->gahbcfg, 1, 0);
+        dwc_write_reg32( &_core_if->core_global_regs->gintmsk, 0);
+
+        if ( _core_if->dev_if ) {
+                kfree( _core_if->dev_if );
+        }
+        if ( _core_if->host_if ) {
+                kfree( _core_if->host_if );
+        }
+        kfree( _core_if );
+}
+
+/**
+ * This function enables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param[in] _core_if Programming view of DWC_otg controller.
+ */
+extern void dwc_otg_enable_global_interrupts( dwc_otg_core_if_t *_core_if )
+{
+        gahbcfg_data_t ahbcfg = { .d32 = 0};
+        ahbcfg.b.glblintrmsk = 1; /* Enable interrupts */
+        dwc_modify_reg32(&_core_if->core_global_regs->gahbcfg, 0, ahbcfg.d32);
+}
+/**
+ * This function disables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param[in] _core_if Programming view of DWC_otg controller.
+ */
+extern void dwc_otg_disable_global_interrupts( dwc_otg_core_if_t *_core_if )
+{
+        gahbcfg_data_t ahbcfg = { .d32 = 0};
+        ahbcfg.b.glblintrmsk = 1; /* Enable interrupts */
+        dwc_modify_reg32(&_core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+}
+
+/**
+ * This function initializes the commmon interrupts, used in both
+ * device and host modes.
+ *
+ * @param[in] _core_if Programming view of the DWC_otg controller
+ *
+ */
+static void dwc_otg_enable_common_interrupts(dwc_otg_core_if_t *_core_if)
+{
+        dwc_otg_core_global_regs_t *global_regs = 
+                _core_if->core_global_regs;
+        gintmsk_data_t intr_mask = { .d32 = 0};
+        /* Clear any pending OTG Interrupts */
+        dwc_write_reg32( &global_regs->gotgint, 0xFFFFFFFF); 
+        /* Clear any pending interrupts */
+        dwc_write_reg32( &global_regs->gintsts, 0xFFFFFFFF); 
+        /* 
+         * Enable the interrupts in the GINTMSK. 
+         */
+        intr_mask.b.modemismatch = 1;
+        intr_mask.b.otgintr = 1;
+        if (!_core_if->dma_enable) {
+                intr_mask.b.rxstsqlvl = 1;
+        }
+        intr_mask.b.conidstschng = 1;
+        intr_mask.b.wkupintr = 1;
+        intr_mask.b.disconnect = 1;
+        intr_mask.b.usbsuspend = 1;
+       intr_mask.b.sessreqintr = 1;
+        dwc_write_reg32( &global_regs->gintmsk, intr_mask.d32);
+}
+
+/**
+ * Initializes the FSLSPClkSel field of the HCFG register depending on the PHY
+ * type.
+ */
+static void init_fslspclksel(dwc_otg_core_if_t *_core_if)
+{
+       uint32_t        val;
+       hcfg_data_t     hcfg;
+
+       if (((_core_if->hwcfg2.b.hs_phy_type == 2) &&
+            (_core_if->hwcfg2.b.fs_phy_type == 1) &&
+            (_core_if->core_params->ulpi_fs_ls)) ||
+           (_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS))
+       {
+               /* Full speed PHY */
+               val = DWC_HCFG_48_MHZ;
+       } else {
+               /* High speed PHY running at full speed or high speed */
+               val = DWC_HCFG_30_60_MHZ;
+       }
+
+       DWC_DEBUGPL(DBG_CIL, "Initializing HCFG.FSLSPClkSel to 0x%1x\n", val);
+       hcfg.d32 = dwc_read_reg32(&_core_if->host_if->host_global_regs->hcfg);
+       hcfg.b.fslspclksel = val;
+       dwc_write_reg32(&_core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+/**
+ * Initializes the DevSpd field of the DCFG register depending on the PHY type
+ * and the enumeration speed of the device.
+ */
+static void init_devspd(dwc_otg_core_if_t *_core_if)
+{
+       uint32_t        val;
+       dcfg_data_t     dcfg;
+
+       if (((_core_if->hwcfg2.b.hs_phy_type == 2) &&
+            (_core_if->hwcfg2.b.fs_phy_type == 1) &&
+            (_core_if->core_params->ulpi_fs_ls)) ||
+            (_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) 
+       {
+               /* Full speed PHY */
+               val = 0x3;
+       } else if (_core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+               /* High speed PHY running at full speed */
+               val = 0x1;
+       } else {
+               /* High speed PHY running at high speed */
+               val = 0x0;
+       }
+
+       DWC_DEBUGPL(DBG_CIL, "Initializing DCFG.DevSpd to 0x%1x\n", val);
+       dcfg.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dcfg);
+       dcfg.b.devspd = val;
+       dwc_write_reg32(&_core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+}
+
+/**
+ * This function calculates the number of IN EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param _pcd the pcd structure.
+ */
+static uint32_t calc_num_in_eps(dwc_otg_core_if_t * _core_if)
+{
+       uint32_t num_in_eps = 0;
+       uint32_t num_eps = _core_if->hwcfg2.b.num_dev_ep;
+       uint32_t hwcfg1 = _core_if->hwcfg1.d32 >> 2;
+       uint32_t num_tx_fifos = _core_if->hwcfg4.b.num_in_eps;
+       int i;
+       for (i = 0; i < num_eps; ++i) {
+               if (!(hwcfg1 & 0x1))
+                       num_in_eps++;
+               hwcfg1 >>= 2;
+       }
+       if (_core_if->hwcfg4.b.ded_fifo_en) {
+               num_in_eps = (num_in_eps > num_tx_fifos) ? num_tx_fifos : num_in_eps;
+       }
+       return num_in_eps;
+}
+
+
+/**
+ * This function calculates the number of OUT EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param _pcd the pcd structure.
+ */
+static uint32_t calc_num_out_eps(dwc_otg_core_if_t * _core_if)
+{
+       uint32_t num_out_eps = 0;
+       uint32_t num_eps = _core_if->hwcfg2.b.num_dev_ep;
+       uint32_t hwcfg1 = _core_if->hwcfg1.d32 >> 2;
+       int i;
+       for (i = 0; i < num_eps; ++i) {
+               if (!(hwcfg1 & 0x2))
+                       num_out_eps++;
+               hwcfg1 >>= 2;
+       }
+       return num_out_eps;
+}
+/**
+ * This function initializes the DWC_otg controller registers and
+ * prepares the core for device mode or host mode operation.
+ *
+ * @param _core_if Programming view of the DWC_otg controller
+ *
+ */
+void dwc_otg_core_init(dwc_otg_core_if_t *_core_if) 
+{
+       dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs;
+    dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+    int i = 0;
+    gahbcfg_data_t ahbcfg = { .d32 = 0};
+    gusbcfg_data_t usbcfg = { .d32 = 0 };
+    gi2cctl_data_t i2cctl = {.d32 = 0};
+
+    DWC_DEBUGPL(DBG_CILV, "dwc_otg_core_init(%p)\n",_core_if);
+
+    /* Common Initialization */
+
+    usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+       DWC_DEBUGPL(DBG_CIL, "USB config register: 0x%08x\n", usbcfg.d32);
+
+    /* Program the ULPI External VBUS bit if needed */
+    //usbcfg.b.ulpi_ext_vbus_drv = 1;
+    //usbcfg.b.ulpi_ext_vbus_drv = 0;
+    usbcfg.b.ulpi_ext_vbus_drv = 
+        (_core_if->core_params->phy_ulpi_ext_vbus == DWC_PHY_ULPI_EXTERNAL_VBUS) ? 1 : 0;
+
+    /* Set external TS Dline pulsing */
+    usbcfg.b.term_sel_dl_pulse = (_core_if->core_params->ts_dline == 1) ? 1 : 0;
+    dwc_write_reg32 (&global_regs->gusbcfg, usbcfg.d32);
+
+    /* Reset the Controller */
+    dwc_otg_core_reset( _core_if );
+
+    /* Initialize parameters from Hardware configuration registers. */
+#if 0
+    dev_if->num_eps = _core_if->hwcfg2.b.num_dev_ep;
+    dev_if->num_perio_eps = _core_if->hwcfg4.b.num_dev_perio_in_ep;
+#else
+       dev_if->num_in_eps = calc_num_in_eps(_core_if);
+       dev_if->num_out_eps = calc_num_out_eps(_core_if);
+#endif        
+       DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n",
+                      _core_if->hwcfg4.b.num_dev_perio_in_ep);
+       DWC_DEBUGPL(DBG_CIL, "Is power optimization enabled?  %s\n",
+                    _core_if->hwcfg4.b.power_optimiz ? "Yes" : "No");
+       DWC_DEBUGPL(DBG_CIL, "vbus_valid filter enabled?  %s\n",
+                    _core_if->hwcfg4.b.vbus_valid_filt_en ? "Yes" : "No");
+       DWC_DEBUGPL(DBG_CIL, "iddig filter enabled?  %s\n",
+                    _core_if->hwcfg4.b.iddig_filt_en ? "Yes" : "No");
+
+    DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n",_core_if->hwcfg4.b.num_dev_perio_in_ep);
+    for (i=0; i < _core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
+        dev_if->perio_tx_fifo_size[i] =
+                   dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]) >> 16;
+               DWC_DEBUGPL(DBG_CIL, "Periodic Tx FIFO SZ #%d=0x%0x\n", i,
+                            dev_if->perio_tx_fifo_size[i]);
+       }
+       for (i = 0; i < _core_if->hwcfg4.b.num_in_eps; i++) {
+               dev_if->tx_fifo_size[i] =
+                   dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]) >> 16;
+               DWC_DEBUGPL(DBG_CIL, "Tx FIFO SZ #%d=0x%0x\n", i,
+                            dev_if->perio_tx_fifo_size[i]);
+       }
+        
+    _core_if->total_fifo_size = _core_if->hwcfg3.b.dfifo_depth;
+       _core_if->rx_fifo_size = dwc_read_reg32(&global_regs->grxfsiz);
+       _core_if->nperio_tx_fifo_size = dwc_read_reg32(&global_regs->gnptxfsiz) >> 16;
+        
+    DWC_DEBUGPL(DBG_CIL, "Total FIFO SZ=%d\n", _core_if->total_fifo_size);
+    DWC_DEBUGPL(DBG_CIL, "Rx FIFO SZ=%d\n", _core_if->rx_fifo_size);
+    DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO SZ=%d\n", _core_if->nperio_tx_fifo_size);
+
+    /* This programming sequence needs to happen in FS mode before any other
+    * programming occurs */
+    if ((_core_if->core_params->speed == DWC_SPEED_PARAM_FULL) &&
+        (_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+        /* If FS mode with FS PHY */
+
+        /* core_init() is now called on every switch so only call the
+         * following for the first time through. */
+        if (!_core_if->phy_init_done) {
+            _core_if->phy_init_done = 1;
+            DWC_DEBUGPL(DBG_CIL, "FS_PHY detected\n");
+            usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+            usbcfg.b.physel = 1;
+            dwc_write_reg32 (&global_regs->gusbcfg, usbcfg.d32);
+
+            /* Reset after a PHY select */
+            dwc_otg_core_reset( _core_if );
+        }
+
+        /* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.  Also
+         * do this on HNP Dev/Host mode switches (done in dev_init and
+         * host_init). */
+        if (dwc_otg_is_host_mode(_core_if)) {
+                       DWC_DEBUGPL(DBG_CIL, "host mode\n");
+            init_fslspclksel(_core_if);
+               } else {
+                       DWC_DEBUGPL(DBG_CIL, "device mode\n");
+            init_devspd(_core_if);
+        }
+
+        if (_core_if->core_params->i2c_enable) {
+            DWC_DEBUGPL(DBG_CIL, "FS_PHY Enabling I2c\n");
+            /* Program GUSBCFG.OtgUtmifsSel to I2C */
+            usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+            usbcfg.b.otgutmifssel = 1;
+            dwc_write_reg32 (&global_regs->gusbcfg, usbcfg.d32);
+                               
+            /* Program GI2CCTL.I2CEn */
+            i2cctl.d32 = dwc_read_reg32(&global_regs->gi2cctl);
+            i2cctl.b.i2cdevaddr = 1;
+            i2cctl.b.i2cen = 0;
+            dwc_write_reg32 (&global_regs->gi2cctl, i2cctl.d32);
+            i2cctl.b.i2cen = 1;
+            dwc_write_reg32 (&global_regs->gi2cctl, i2cctl.d32);
+        }
+
+    } /* endif speed == DWC_SPEED_PARAM_FULL */
+       else {
+        /* High speed PHY. */
+        if (!_core_if->phy_init_done) {
+            _core_if->phy_init_done = 1;
+                       DWC_DEBUGPL(DBG_CIL, "High spped PHY\n");
+            /* HS PHY parameters.  These parameters are preserved
+             * during soft reset so only program the first time.  Do
+             * a soft reset immediately after setting phyif.  */
+            usbcfg.b.ulpi_utmi_sel = _core_if->core_params->phy_type;
+            if (usbcfg.b.ulpi_utmi_sel == 2) { // winder
+                               DWC_DEBUGPL(DBG_CIL, "ULPI\n");
+                /* ULPI interface */
+                usbcfg.b.phyif = 0;
+                usbcfg.b.ddrsel = _core_if->core_params->phy_ulpi_ddr;
+            } else {
+                /* UTMI+ interface */
+                if (_core_if->core_params->phy_utmi_width == 16) {
+                    usbcfg.b.phyif = 1;
+                                       DWC_DEBUGPL(DBG_CIL, "UTMI+ 16\n");
+                               } else {
+                                       DWC_DEBUGPL(DBG_CIL, "UTMI+ 8\n");
+                    usbcfg.b.phyif = 0;
+                }
+            }
+            dwc_write_reg32( &global_regs->gusbcfg, usbcfg.d32);
+
+            /* Reset after setting the PHY parameters */
+            dwc_otg_core_reset( _core_if );
+        }
+    }
+
+    if ((_core_if->hwcfg2.b.hs_phy_type == 2) &&
+        (_core_if->hwcfg2.b.fs_phy_type == 1) &&
+        (_core_if->core_params->ulpi_fs_ls)) 
+    {
+        DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS\n");
+        usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+        usbcfg.b.ulpi_fsls = 1;
+        usbcfg.b.ulpi_clk_sus_m = 1;
+        dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+       } else {
+               DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS=0\n");
+        usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+        usbcfg.b.ulpi_fsls = 0;
+        usbcfg.b.ulpi_clk_sus_m = 0;
+        dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+    }
+
+    /* Program the GAHBCFG Register.*/
+    switch (_core_if->hwcfg2.b.architecture){
+
+        case DWC_SLAVE_ONLY_ARCH:
+            DWC_DEBUGPL(DBG_CIL, "Slave Only Mode\n");
+            ahbcfg.b.nptxfemplvl_txfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+            ahbcfg.b.ptxfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+            _core_if->dma_enable = 0;
+            break;
+
+        case DWC_EXT_DMA_ARCH:
+            DWC_DEBUGPL(DBG_CIL, "External DMA Mode\n");
+            ahbcfg.b.hburstlen = _core_if->core_params->dma_burst_size; 
+            _core_if->dma_enable = (_core_if->core_params->dma_enable != 0);
+            break;
+
+        case DWC_INT_DMA_ARCH:
+            DWC_DEBUGPL(DBG_CIL, "Internal DMA Mode\n");
+            //ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR;
+            ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR4;
+            _core_if->dma_enable = (_core_if->core_params->dma_enable != 0);
+            break;
+    }
+    ahbcfg.b.dmaenable = _core_if->dma_enable;
+    dwc_write_reg32(&global_regs->gahbcfg, ahbcfg.d32);
+       _core_if->en_multiple_tx_fifo = _core_if->hwcfg4.b.ded_fifo_en;
+
+    /* 
+     * Program the GUSBCFG register. 
+     */
+    usbcfg.d32 = dwc_read_reg32( &global_regs->gusbcfg );
+
+    switch (_core_if->hwcfg2.b.op_mode) {
+        case DWC_MODE_HNP_SRP_CAPABLE:
+            usbcfg.b.hnpcap = (_core_if->core_params->otg_cap ==
+            DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
+            usbcfg.b.srpcap = (_core_if->core_params->otg_cap !=
+            DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+            break;
+
+        case DWC_MODE_SRP_ONLY_CAPABLE:
+            usbcfg.b.hnpcap = 0;
+            usbcfg.b.srpcap = (_core_if->core_params->otg_cap !=
+            DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+            break;
+
+        case DWC_MODE_NO_HNP_SRP_CAPABLE:
+            usbcfg.b.hnpcap = 0;
+            usbcfg.b.srpcap = 0;
+            break;
+
+        case DWC_MODE_SRP_CAPABLE_DEVICE:
+            usbcfg.b.hnpcap = 0;
+            usbcfg.b.srpcap = (_core_if->core_params->otg_cap !=
+            DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+            break;
+
+        case DWC_MODE_NO_SRP_CAPABLE_DEVICE:
+            usbcfg.b.hnpcap = 0;
+            usbcfg.b.srpcap = 0;
+            break;
+
+        case DWC_MODE_SRP_CAPABLE_HOST:
+            usbcfg.b.hnpcap = 0;
+            usbcfg.b.srpcap = (_core_if->core_params->otg_cap !=
+            DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+            break;
+
+        case DWC_MODE_NO_SRP_CAPABLE_HOST:
+            usbcfg.b.hnpcap = 0;
+            usbcfg.b.srpcap = 0;
+            break;
+    }
+
+    dwc_write_reg32( &global_regs->gusbcfg, usbcfg.d32);
+        
+    /* Enable common interrupts */
+    dwc_otg_enable_common_interrupts( _core_if );
+
+    /* Do device or host intialization based on mode during PCD
+     * and HCD initialization  */
+    if (dwc_otg_is_host_mode( _core_if )) {
+        DWC_DEBUGPL(DBG_ANY, "Host Mode\n" );
+        _core_if->op_state = A_HOST;
+    } else {
+        DWC_DEBUGPL(DBG_ANY, "Device Mode\n" );
+        _core_if->op_state = B_PERIPHERAL;
+#ifdef DWC_DEVICE_ONLY
+        dwc_otg_core_dev_init( _core_if );
+#endif
+    }
+}
+
+
+/** 
+ * This function enables the Device mode interrupts.
+ *
+ * @param _core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t *_core_if)
+{
+        gintmsk_data_t intr_mask = { .d32 = 0};
+       dwc_otg_core_global_regs_t * global_regs = _core_if->core_global_regs;
+
+        DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
+
+        /* Disable all interrupts. */
+        dwc_write_reg32( &global_regs->gintmsk, 0);
+
+        /* Clear any pending interrupts */
+        dwc_write_reg32( &global_regs->gintsts, 0xFFFFFFFF); 
+
+        /* Enable the common interrupts */
+        dwc_otg_enable_common_interrupts( _core_if );
+
+        /* Enable interrupts */
+        intr_mask.b.usbreset = 1;
+        intr_mask.b.enumdone = 1;
+        //intr_mask.b.epmismatch = 1;
+        intr_mask.b.inepintr = 1;
+        intr_mask.b.outepintr = 1;
+        intr_mask.b.erlysuspend = 1;
+       if (_core_if->en_multiple_tx_fifo == 0) {
+               intr_mask.b.epmismatch = 1;
+       }
+
+        /** @todo NGS: Should this be a module parameter? */
+        intr_mask.b.isooutdrop = 1;
+        intr_mask.b.eopframe = 1;
+        intr_mask.b.incomplisoin = 1;
+        intr_mask.b.incomplisoout = 1;
+
+        dwc_modify_reg32( &global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+
+        DWC_DEBUGPL(DBG_CIL, "%s() gintmsk=%0x\n", __func__, 
+                    dwc_read_reg32( &global_regs->gintmsk));
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * device mode.
+ * 
+ * @param _core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_dev_init(dwc_otg_core_if_t *_core_if)
+{
+        dwc_otg_core_global_regs_t *global_regs = 
+                _core_if->core_global_regs;
+        dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+        dwc_otg_core_params_t *params = _core_if->core_params;
+        dcfg_data_t dcfg = {.d32 = 0};
+        grstctl_t resetctl = { .d32=0 };
+        int i;
+        uint32_t rx_fifo_size;
+        fifosize_data_t nptxfifosize;
+       fifosize_data_t txfifosize;
+       dthrctl_data_t dthrctl;
+
+        fifosize_data_t ptxfifosize;
+        
+        /* Restart the Phy Clock */
+        dwc_write_reg32(_core_if->pcgcctl, 0);
+        
+        /* Device configuration register */
+       init_devspd(_core_if);
+       dcfg.d32 = dwc_read_reg32( &dev_if->dev_global_regs->dcfg);
+        dcfg.b.perfrint = DWC_DCFG_FRAME_INTERVAL_80;
+        dwc_write_reg32( &dev_if->dev_global_regs->dcfg, dcfg.d32 );
+
+        /* Configure data FIFO sizes */
+        if ( _core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo ) {
+                
+                DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n", _core_if->total_fifo_size);
+                DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n", params->dev_rx_fifo_size);
+                DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n", params->dev_nperio_tx_fifo_size);
+
+               /* Rx FIFO */
+                DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n", 
+                            dwc_read_reg32(&global_regs->grxfsiz));
+                rx_fifo_size = params->dev_rx_fifo_size;
+                dwc_write_reg32( &global_regs->grxfsiz, rx_fifo_size );
+                DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n", 
+                            dwc_read_reg32(&global_regs->grxfsiz));
+
+               /** Set Periodic Tx FIFO Mask all bits 0 */
+           _core_if->p_tx_msk = 0;
+
+               /** Set Tx FIFO Mask all bits 0 */
+           _core_if->tx_msk = 0;
+               if (_core_if->en_multiple_tx_fifo == 0) {
+               /* Non-periodic Tx FIFO */
+                DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n", 
+                            dwc_read_reg32(&global_regs->gnptxfsiz));
+                nptxfifosize.b.depth  = params->dev_nperio_tx_fifo_size;
+                nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+                dwc_write_reg32( &global_regs->gnptxfsiz, nptxfifosize.d32 );
+                DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n", 
+                            dwc_read_reg32(&global_regs->gnptxfsiz));
+
+
+                /**@todo NGS: Fix Periodic FIFO Sizing! */
+               /*
+                * Periodic Tx FIFOs These FIFOs are numbered from 1 to 15.
+                * Indexes of the FIFO size module parameters in the
+                * dev_perio_tx_fifo_size array and the FIFO size registers in
+                * the dptxfsiz array run from 0 to 14.
+                */
+                /** @todo Finish debug of this */   
+                   ptxfifosize.b.startaddr =
+                   nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+                       for (i = 0; i < _core_if->hwcfg4.b.num_dev_perio_in_ep;i++) {
+                       ptxfifosize.b.depth = params->dev_perio_tx_fifo_size[i];
+                               DWC_DEBUGPL(DBG_CIL,"initial dptxfsiz_dieptxf[%d]=%08x\n",
+                                    i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]));
+                               dwc_write_reg32(&global_regs->dptxfsiz_dieptxf[i],ptxfifosize.d32);
+                               DWC_DEBUGPL(DBG_CIL,"new dptxfsiz_dieptxf[%d]=%08x\n",
+                                    i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]));
+                        ptxfifosize.b.startaddr += ptxfifosize.b.depth;
+                }
+               } else {
+
+                   /*
+                    * Tx FIFOs These FIFOs are numbered from 1 to 15.
+                    * Indexes of the FIFO size module parameters in the
+                    * dev_tx_fifo_size array and the FIFO size registers in
+                    * the dptxfsiz_dieptxf array run from 0 to 14.
+                    */
+
+                   /* Non-periodic Tx FIFO */
+                   DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+                               dwc_read_reg32(&global_regs->gnptxfsiz));
+                       nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+                       nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+                       dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+                       DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+                                     dwc_read_reg32(&global_regs->gnptxfsiz));
+                       txfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+                       for (i = 1;i < _core_if->hwcfg4.b.num_dev_perio_in_ep;i++) {
+                               txfifosize.b.depth = params->dev_tx_fifo_size[i];
+                               DWC_DEBUGPL(DBG_CIL,"initial dptxfsiz_dieptxf[%d]=%08x\n",
+                                     i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]));
+                               dwc_write_reg32(&global_regs->dptxfsiz_dieptxf[i - 1],txfifosize.d32);
+                               DWC_DEBUGPL(DBG_CIL,"new dptxfsiz_dieptxf[%d]=%08x\n",
+                                     i,dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i-1]));
+                               txfifosize.b.startaddr += txfifosize.b.depth;
+        }
+               }
+       }
+        /* Flush the FIFOs */
+        dwc_otg_flush_tx_fifo(_core_if, 0x10); /* all Tx FIFOs */
+        dwc_otg_flush_rx_fifo(_core_if);
+
+       /* Flush the Learning Queue. */
+       resetctl.b.intknqflsh = 1;
+        dwc_write_reg32( &_core_if->core_global_regs->grstctl, resetctl.d32);
+
+        /* Clear all pending Device Interrupts */
+        dwc_write_reg32( &dev_if->dev_global_regs->diepmsk, 0 );
+        dwc_write_reg32( &dev_if->dev_global_regs->doepmsk, 0 );
+        dwc_write_reg32( &dev_if->dev_global_regs->daint, 0xFFFFFFFF );
+        dwc_write_reg32( &dev_if->dev_global_regs->daintmsk, 0 );
+
+       for (i = 0; i <= dev_if->num_in_eps; i++) {
+               depctl_data_t depctl;
+               depctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->diepctl);
+               if (depctl.b.epena) {
+                       depctl.d32 = 0;
+                       depctl.b.epdis = 1;
+                       depctl.b.snak = 1;
+               } else {
+                       depctl.d32 = 0;
+               }
+               dwc_write_reg32( &dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+
+               dwc_write_reg32(&dev_if->in_ep_regs[i]->dieptsiz, 0);
+               dwc_write_reg32(&dev_if->in_ep_regs[i]->diepdma, 0);
+               dwc_write_reg32(&dev_if->in_ep_regs[i]->diepint, 0xFF);
+       }
+       for (i = 0; i <= dev_if->num_out_eps; i++) {
+               depctl_data_t depctl;
+               depctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[i]->doepctl);
+               if (depctl.b.epena) {
+                       depctl.d32 = 0;
+                       depctl.b.epdis = 1;
+                       depctl.b.snak = 1;
+               } else {
+                       depctl.d32 = 0;
+               }
+               dwc_write_reg32( &dev_if->out_ep_regs[i]->doepctl, depctl.d32);
+
+                //dwc_write_reg32( &dev_if->in_ep_regs[i]->dieptsiz, 0);
+                dwc_write_reg32( &dev_if->out_ep_regs[i]->doeptsiz, 0);
+                //dwc_write_reg32( &dev_if->in_ep_regs[i]->diepdma, 0);
+                dwc_write_reg32( &dev_if->out_ep_regs[i]->doepdma, 0);
+                //dwc_write_reg32( &dev_if->in_ep_regs[i]->diepint, 0xFF);
+                dwc_write_reg32( &dev_if->out_ep_regs[i]->doepint, 0xFF);
+        }
+        
+       if (_core_if->en_multiple_tx_fifo && _core_if->dma_enable) {
+               dev_if->non_iso_tx_thr_en = _core_if->core_params->thr_ctl & 0x1;
+               dev_if->iso_tx_thr_en = (_core_if->core_params->thr_ctl >> 1) & 0x1;
+               dev_if->rx_thr_en = (_core_if->core_params->thr_ctl >> 2) & 0x1;
+               dev_if->rx_thr_length = _core_if->core_params->rx_thr_length;
+               dev_if->tx_thr_length = _core_if->core_params->tx_thr_length;
+               dthrctl.d32 = 0;
+               dthrctl.b.non_iso_thr_en = dev_if->non_iso_tx_thr_en;
+               dthrctl.b.iso_thr_en = dev_if->iso_tx_thr_en;
+               dthrctl.b.tx_thr_len = dev_if->tx_thr_length;
+               dthrctl.b.rx_thr_en = dev_if->rx_thr_en;
+               dthrctl.b.rx_thr_len = dev_if->rx_thr_length;
+               dwc_write_reg32(&dev_if->dev_global_regs->dtknqr3_dthrctl,dthrctl.d32);
+               DWC_DEBUGPL(DBG_CIL, "Non ISO Tx Thr - %d\nISO Tx Thr - %d\n"
+                                       "Rx Thr - %d\nTx Thr Len - %d\nRx Thr Len - %d\n",
+                                       dthrctl.b.non_iso_thr_en, dthrctl.b.iso_thr_en,
+                                       dthrctl.b.rx_thr_en, dthrctl.b.tx_thr_len,
+                                       dthrctl.b.rx_thr_len);
+       }
+        dwc_otg_enable_device_interrupts( _core_if );        
+       {
+               diepmsk_data_t msk = {.d32 = 0};
+               msk.b.txfifoundrn = 1;
+               dwc_modify_reg32(&dev_if->dev_global_regs->diepmsk, msk.d32,msk.d32);
+}
+}
+
+/** 
+ * This function enables the Host mode interrupts.
+ *
+ * @param _core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t *_core_if)
+{
+        dwc_otg_core_global_regs_t *global_regs = _core_if->core_global_regs;
+       gintmsk_data_t intr_mask = {.d32 = 0};
+
+        DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
+
+        /* Disable all interrupts. */
+        dwc_write_reg32(&global_regs->gintmsk, 0);
+
+        /* Clear any pending interrupts. */
+        dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF); 
+
+        /* Enable the common interrupts */
+        dwc_otg_enable_common_interrupts(_core_if);
+
+       /*
+        * Enable host mode interrupts without disturbing common
+        * interrupts.
+        */
+       intr_mask.b.sofintr = 1;
+       intr_mask.b.portintr = 1;
+       intr_mask.b.hcintr = 1;
+
+        //dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+        //dwc_modify_reg32(&global_regs->gintmsk, 0, intr_mask.d32);
+       dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+}
+
+/** 
+ * This function disables the Host Mode interrupts.
+ *
+ * @param _core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t *_core_if)
+{
+        dwc_otg_core_global_regs_t *global_regs =
+               _core_if->core_global_regs;
+       gintmsk_data_t intr_mask = {.d32 = 0};
+
+        DWC_DEBUGPL(DBG_CILV, "%s()\n", __func__);
+         
+       /*
+        * Disable host mode interrupts without disturbing common
+        * interrupts.
+        */
+       intr_mask.b.sofintr = 1;
+       intr_mask.b.portintr = 1;
+       intr_mask.b.hcintr = 1;
+        intr_mask.b.ptxfempty = 1;
+       intr_mask.b.nptxfempty = 1;
+        
+        dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0);
+}
+
+#if 0
+/* currently not used, keep it here as if needed later */
+static int phy_read(dwc_otg_core_if_t * _core_if, int addr)
+{
+       u32 val;
+       int timeout = 10;
+
+       dwc_write_reg32(&_core_if->core_global_regs->gpvndctl,
+                       0x02000000 | (addr << 16));
+       val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl);
+       while (((val & 0x08000000) == 0) && (timeout--)) {
+               udelay(1000);
+               val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl);
+       }
+       val = dwc_read_reg32(&_core_if->core_global_regs->gpvndctl);
+       printk("%s: addr=%02x regval=%02x\n", __func__, addr, val & 0x000000ff);
+
+       return 0;
+}
+#endif
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * host mode.
+ *
+ * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
+ * request queues. Host channels are reset to ensure that they are ready for
+ * performing transfers.
+ *
+ * @param _core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_host_init(dwc_otg_core_if_t *_core_if)
+{
+        dwc_otg_core_global_regs_t *global_regs = _core_if->core_global_regs;
+       dwc_otg_host_if_t       *host_if = _core_if->host_if;
+        dwc_otg_core_params_t  *params = _core_if->core_params;
+       hprt0_data_t            hprt0 = {.d32 = 0};
+        fifosize_data_t        nptxfifosize;
+        fifosize_data_t        ptxfifosize;
+       int                     i;
+       hcchar_data_t           hcchar;
+       hcfg_data_t             hcfg;
+       dwc_otg_hc_regs_t       *hc_regs;
+       int                     num_channels;
+       gotgctl_data_t  gotgctl = {.d32 = 0};
+
+       DWC_DEBUGPL(DBG_CILV,"%s(%p)\n", __func__, _core_if);
+
+        /* Restart the Phy Clock */
+        dwc_write_reg32(_core_if->pcgcctl, 0);
+        
+       /* Initialize Host Configuration Register */
+       init_fslspclksel(_core_if);
+       if (_core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+               hcfg.d32 = dwc_read_reg32(&host_if->host_global_regs->hcfg);
+               hcfg.b.fslssupp = 1;
+               dwc_write_reg32(&host_if->host_global_regs->hcfg, hcfg.d32);
+       }
+
+       /* Configure data FIFO sizes */
+       if (_core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+                DWC_DEBUGPL(DBG_CIL,"Total FIFO Size=%d\n", _core_if->total_fifo_size);
+                DWC_DEBUGPL(DBG_CIL,"Rx FIFO Size=%d\n", params->host_rx_fifo_size);
+                DWC_DEBUGPL(DBG_CIL,"NP Tx FIFO Size=%d\n", params->host_nperio_tx_fifo_size);
+                DWC_DEBUGPL(DBG_CIL,"P Tx FIFO Size=%d\n", params->host_perio_tx_fifo_size);
+
+               /* Rx FIFO */
+               DWC_DEBUGPL(DBG_CIL,"initial grxfsiz=%08x\n", dwc_read_reg32(&global_regs->grxfsiz));
+               dwc_write_reg32(&global_regs->grxfsiz, params->host_rx_fifo_size);
+               DWC_DEBUGPL(DBG_CIL,"new grxfsiz=%08x\n", dwc_read_reg32(&global_regs->grxfsiz));
+
+               /* Non-periodic Tx FIFO */
+                DWC_DEBUGPL(DBG_CIL,"initial gnptxfsiz=%08x\n", dwc_read_reg32(&global_regs->gnptxfsiz));
+                nptxfifosize.b.depth  = params->host_nperio_tx_fifo_size;
+                nptxfifosize.b.startaddr = params->host_rx_fifo_size;
+                dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+                DWC_DEBUGPL(DBG_CIL,"new gnptxfsiz=%08x\n", dwc_read_reg32(&global_regs->gnptxfsiz));
+               
+               /* Periodic Tx FIFO */
+                DWC_DEBUGPL(DBG_CIL,"initial hptxfsiz=%08x\n", dwc_read_reg32(&global_regs->hptxfsiz));
+                ptxfifosize.b.depth  = params->host_perio_tx_fifo_size;
+                ptxfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+                dwc_write_reg32(&global_regs->hptxfsiz, ptxfifosize.d32);
+                DWC_DEBUGPL(DBG_CIL,"new hptxfsiz=%08x\n", dwc_read_reg32(&global_regs->hptxfsiz));
+       }
+
+        /* Clear Host Set HNP Enable in the OTG Control Register */
+        gotgctl.b.hstsethnpen = 1;
+        dwc_modify_reg32( &global_regs->gotgctl, gotgctl.d32, 0);
+
+       /* Make sure the FIFOs are flushed. */
+       dwc_otg_flush_tx_fifo(_core_if, 0x10 /* all Tx FIFOs */);
+       dwc_otg_flush_rx_fifo(_core_if);
+
+       /* Flush out any leftover queued requests. */
+       num_channels = _core_if->core_params->host_channels;
+       for (i = 0; i < num_channels; i++) {
+               hc_regs = _core_if->host_if->hc_regs[i];
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               hcchar.b.chen = 0;
+               hcchar.b.chdis = 1;
+               hcchar.b.epdir = 0;
+               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+       }
+              
+       /* Halt all channels to put them into a known state. */
+       for (i = 0; i < num_channels; i++) {
+               int count = 0;
+               hc_regs = _core_if->host_if->hc_regs[i];
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               hcchar.b.chen = 1;
+               hcchar.b.chdis = 1;
+               hcchar.b.epdir = 0;
+               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+               DWC_DEBUGPL(DBG_HCDV, "%s: Halt channel %d\n", __func__, i);
+               do {
+                       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+                       if (++count > 200) {
+                               DWC_ERROR("%s: Unable to clear halt on channel %d\n",
+                                         __func__, i);
+                               break;
+                       }
+                       udelay(100);
+               } while (hcchar.b.chen);
+       }
+
+       /* Turn on the vbus power. */
+        DWC_PRINT("Init: Port Power? op_state=%d\n", _core_if->op_state);
+        if (_core_if->op_state == A_HOST){   
+                hprt0.d32 = dwc_otg_read_hprt0(_core_if);
+                DWC_PRINT("Init: Power Port (%d)\n", hprt0.b.prtpwr);
+                if (hprt0.b.prtpwr == 0 ) {
+                        hprt0.b.prtpwr = 1;
+                        dwc_write_reg32(host_if->hprt0, hprt0.d32);
+                }  
+        }
+
+        dwc_otg_enable_host_interrupts( _core_if );
+}
+
+/**
+ * Prepares a host channel for transferring packets to/from a specific
+ * endpoint. The HCCHARn register is set up with the characteristics specified
+ * in _hc. Host channel interrupts that may need to be serviced while this
+ * transfer is in progress are enabled.
+ *
+ * @param _core_if Programming view of DWC_otg controller
+ * @param _hc Information needed to initialize the host channel
+ */
+void dwc_otg_hc_init(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       uint32_t intr_enable;
+       hcintmsk_data_t hc_intr_mask;
+       gintmsk_data_t gintmsk = {.d32 = 0};
+       hcchar_data_t hcchar;
+       hcsplt_data_t hcsplt;
+
+       uint8_t hc_num = _hc->hc_num;
+       dwc_otg_host_if_t *host_if = _core_if->host_if;
+       dwc_otg_hc_regs_t *hc_regs = host_if->hc_regs[hc_num];
+
+       /* Clear old interrupt conditions for this host channel. */
+       hc_intr_mask.d32 = 0xFFFFFFFF;
+       hc_intr_mask.b.reserved = 0;
+       dwc_write_reg32(&hc_regs->hcint, hc_intr_mask.d32);
+
+       /* Enable channel interrupts required for this transfer. */
+       hc_intr_mask.d32 = 0;
+       hc_intr_mask.b.chhltd = 1;
+       if (_core_if->dma_enable) {
+               hc_intr_mask.b.ahberr = 1;
+               if (_hc->error_state && !_hc->do_split &&
+                   _hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+                       hc_intr_mask.b.ack = 1;
+                       if (_hc->ep_is_in) {
+                               hc_intr_mask.b.datatglerr = 1;
+                               if (_hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
+                                       hc_intr_mask.b.nak = 1;
+                               }
+                       }
+               }
+       } else {
+               switch (_hc->ep_type) {
+               case DWC_OTG_EP_TYPE_CONTROL:
+               case DWC_OTG_EP_TYPE_BULK:
+                       hc_intr_mask.b.xfercompl = 1;
+                       hc_intr_mask.b.stall = 1;
+                       hc_intr_mask.b.xacterr = 1;
+                       hc_intr_mask.b.datatglerr = 1;
+                       if (_hc->ep_is_in) {
+                               hc_intr_mask.b.bblerr = 1;
+                       } else {
+                               hc_intr_mask.b.nak = 1;
+                               hc_intr_mask.b.nyet = 1;
+                               if (_hc->do_ping) {
+                                       hc_intr_mask.b.ack = 1;
+                               }
+                       }
+
+                       if (_hc->do_split) {
+                               hc_intr_mask.b.nak = 1;
+                               if (_hc->complete_split) {
+                                       hc_intr_mask.b.nyet = 1;
+                               }
+                               else {
+                                       hc_intr_mask.b.ack = 1;
+                               }
+                       }
+
+                       if (_hc->error_state) {
+                               hc_intr_mask.b.ack = 1;
+                       }
+                       break;
+               case DWC_OTG_EP_TYPE_INTR:
+                       hc_intr_mask.b.xfercompl = 1;
+                       hc_intr_mask.b.nak = 1;
+                       hc_intr_mask.b.stall = 1;
+                       hc_intr_mask.b.xacterr = 1;
+                       hc_intr_mask.b.datatglerr = 1;
+                       hc_intr_mask.b.frmovrun = 1;
+
+                       if (_hc->ep_is_in) {
+                               hc_intr_mask.b.bblerr = 1;
+                       }
+                       if (_hc->error_state) {
+                               hc_intr_mask.b.ack = 1;
+                       }
+                       if (_hc->do_split) {
+                               if (_hc->complete_split) {
+                                       hc_intr_mask.b.nyet = 1;
+                               }
+                               else {
+                                       hc_intr_mask.b.ack = 1;
+                               }
+                       }
+                       break;
+               case DWC_OTG_EP_TYPE_ISOC:
+                       hc_intr_mask.b.xfercompl = 1;
+                       hc_intr_mask.b.frmovrun = 1;
+                       hc_intr_mask.b.ack = 1;
+
+                       if (_hc->ep_is_in) {
+                               hc_intr_mask.b.xacterr = 1;
+                               hc_intr_mask.b.bblerr = 1;
+                       }
+                       break;
+               }
+       }
+       dwc_write_reg32(&hc_regs->hcintmsk, hc_intr_mask.d32);
+
+       /* Enable the top level host channel interrupt. */
+       intr_enable = (1 << hc_num);
+       dwc_modify_reg32(&host_if->host_global_regs->haintmsk, 0, intr_enable);
+
+       /* Make sure host channel interrupts are enabled. */
+       gintmsk.b.hcintr = 1;
+       dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
+       
+       /*
+        * Program the HCCHARn register with the endpoint characteristics for
+        * the current transfer.
+        */
+       hcchar.d32 = 0;
+       hcchar.b.devaddr = _hc->dev_addr;
+       hcchar.b.epnum = _hc->ep_num;
+       hcchar.b.epdir = _hc->ep_is_in;
+       hcchar.b.lspddev = (_hc->speed == DWC_OTG_EP_SPEED_LOW);
+       hcchar.b.eptype = _hc->ep_type;
+       hcchar.b.mps = _hc->max_packet;
+
+       dwc_write_reg32(&host_if->hc_regs[hc_num]->hcchar, hcchar.d32);
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num);
+       DWC_DEBUGPL(DBG_HCDV, "  Dev Addr: %d\n", hcchar.b.devaddr);
+       DWC_DEBUGPL(DBG_HCDV, "  Ep Num: %d\n", hcchar.b.epnum);
+       DWC_DEBUGPL(DBG_HCDV, "  Is In: %d\n", hcchar.b.epdir);
+       DWC_DEBUGPL(DBG_HCDV, "  Is Low Speed: %d\n", hcchar.b.lspddev);
+       DWC_DEBUGPL(DBG_HCDV, "  Ep Type: %d\n", hcchar.b.eptype);
+       DWC_DEBUGPL(DBG_HCDV, "  Max Pkt: %d\n", hcchar.b.mps);
+       DWC_DEBUGPL(DBG_HCDV, "  Multi Cnt: %d\n", hcchar.b.multicnt);
+
+       /*
+        * Program the HCSPLIT register for SPLITs
+        */
+       hcsplt.d32 = 0;
+       if (_hc->do_split) {
+               DWC_DEBUGPL(DBG_HCDV, "Programming HC %d with split --> %s\n", _hc->hc_num,
+                          _hc->complete_split ? "CSPLIT" : "SSPLIT");
+               hcsplt.b.compsplt = _hc->complete_split;
+               hcsplt.b.xactpos = _hc->xact_pos;
+               hcsplt.b.hubaddr = _hc->hub_addr;
+               hcsplt.b.prtaddr = _hc->port_addr;
+               DWC_DEBUGPL(DBG_HCDV, "   comp split %d\n", _hc->complete_split);
+               DWC_DEBUGPL(DBG_HCDV, "   xact pos %d\n", _hc->xact_pos);
+               DWC_DEBUGPL(DBG_HCDV, "   hub addr %d\n", _hc->hub_addr);
+               DWC_DEBUGPL(DBG_HCDV, "   port addr %d\n", _hc->port_addr);
+               DWC_DEBUGPL(DBG_HCDV, "   is_in %d\n", _hc->ep_is_in);
+               DWC_DEBUGPL(DBG_HCDV, "   Max Pkt: %d\n", hcchar.b.mps);
+               DWC_DEBUGPL(DBG_HCDV, "   xferlen: %d\n", _hc->xfer_len);               
+       }
+       dwc_write_reg32(&host_if->hc_regs[hc_num]->hcsplt, hcsplt.d32);
+
+}
+
+/**
+ * Attempts to halt a host channel. This function should only be called in
+ * Slave mode or to abort a transfer in either Slave mode or DMA mode. Under
+ * normal circumstances in DMA mode, the controller halts the channel when the
+ * transfer is complete or a condition occurs that requires application
+ * intervention.
+ *
+ * In slave mode, checks for a free request queue entry, then sets the Channel
+ * Enable and Channel Disable bits of the Host Channel Characteristics
+ * register of the specified channel to intiate the halt. If there is no free
+ * request queue entry, sets only the Channel Disable bit of the HCCHARn
+ * register to flush requests for this channel. In the latter case, sets a
+ * flag to indicate that the host channel needs to be halted when a request
+ * queue slot is open.
+ *
+ * In DMA mode, always sets the Channel Enable and Channel Disable bits of the
+ * HCCHARn register. The controller ensures there is space in the request
+ * queue before submitting the halt request.
+ *
+ * Some time may elapse before the core flushes any posted requests for this
+ * host channel and halts. The Channel Halted interrupt handler completes the
+ * deactivation of the host channel.
+ *
+ * @param _core_if Controller register interface.
+ * @param _hc Host channel to halt.
+ * @param _halt_status Reason for halting the channel.
+ */
+void dwc_otg_hc_halt(dwc_otg_core_if_t *_core_if,
+                    dwc_hc_t *_hc,
+                    dwc_otg_halt_status_e _halt_status)
+{
+       gnptxsts_data_t                 nptxsts;
+       hptxsts_data_t                  hptxsts;
+       hcchar_data_t                   hcchar;
+       dwc_otg_hc_regs_t               *hc_regs;
+       dwc_otg_core_global_regs_t      *global_regs;
+       dwc_otg_host_global_regs_t      *host_global_regs;
+
+       hc_regs = _core_if->host_if->hc_regs[_hc->hc_num];
+       global_regs = _core_if->core_global_regs;
+       host_global_regs = _core_if->host_if->host_global_regs;
+
+       WARN_ON(_halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS);
+
+       if (_halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+           _halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+               /*
+                * Disable all channel interrupts except Ch Halted. The QTD
+                * and QH state associated with this transfer has been cleared
+                * (in the case of URB_DEQUEUE), so the channel needs to be
+                * shut down carefully to prevent crashes.
+                */
+               hcintmsk_data_t hcintmsk;
+               hcintmsk.d32 = 0;
+               hcintmsk.b.chhltd = 1;
+               dwc_write_reg32(&hc_regs->hcintmsk, hcintmsk.d32);
+
+               /*
+                * Make sure no other interrupts besides halt are currently
+                * pending. Handling another interrupt could cause a crash due
+                * to the QTD and QH state.
+                */
+               dwc_write_reg32(&hc_regs->hcint, ~hcintmsk.d32);
+
+               /*
+                * Make sure the halt status is set to URB_DEQUEUE or AHB_ERR
+                * even if the channel was already halted for some other
+                * reason.
+                */
+               _hc->halt_status = _halt_status;
+
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               if (hcchar.b.chen == 0) {
+                       /*
+                        * The channel is either already halted or it hasn't
+                        * started yet. In DMA mode, the transfer may halt if
+                        * it finishes normally or a condition occurs that
+                        * requires driver intervention. Don't want to halt
+                        * the channel again. In either Slave or DMA mode,
+                        * it's possible that the transfer has been assigned
+                        * to a channel, but not started yet when an URB is
+                        * dequeued. Don't want to halt a channel that hasn't
+                        * started yet.
+                        */
+                       return;
+               }
+       }
+
+       if (_hc->halt_pending) {
+               /*
+                * A halt has already been issued for this channel. This might
+                * happen when a transfer is aborted by a higher level in
+                * the stack.
+                */
+#ifdef DEBUG
+               DWC_PRINT("*** %s: Channel %d, _hc->halt_pending already set ***\n",
+                         __func__, _hc->hc_num);
+
+/*             dwc_otg_dump_global_registers(_core_if); */
+/*             dwc_otg_dump_host_registers(_core_if); */
+#endif         
+               return;
+       }
+
+        hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       hcchar.b.chen = 1;
+       hcchar.b.chdis = 1;
+
+       if (!_core_if->dma_enable) {
+               /* Check for space in the request queue to issue the halt. */
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+                   _hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+                       nptxsts.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+                       if (nptxsts.b.nptxqspcavail == 0) {
+                               hcchar.b.chen = 0;
+                       }
+               } else {
+                       hptxsts.d32 = dwc_read_reg32(&host_global_regs->hptxsts);
+                       if ((hptxsts.b.ptxqspcavail == 0) || (_core_if->queuing_high_bandwidth)) {
+                               hcchar.b.chen = 0;
+                       }
+               }
+       }
+
+       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+       _hc->halt_status = _halt_status;
+
+       if (hcchar.b.chen) {
+               _hc->halt_pending = 1;
+               _hc->halt_on_queue = 0;
+       } else {
+               _hc->halt_on_queue = 1;
+       }
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num);
+       DWC_DEBUGPL(DBG_HCDV, "  hcchar: 0x%08x\n", hcchar.d32);
+       DWC_DEBUGPL(DBG_HCDV, "  halt_pending: %d\n", _hc->halt_pending);
+       DWC_DEBUGPL(DBG_HCDV, "  halt_on_queue: %d\n", _hc->halt_on_queue);
+       DWC_DEBUGPL(DBG_HCDV, "  halt_status: %d\n", _hc->halt_status);
+
+       return;
+}
+
+/**
+ * Clears the transfer state for a host channel. This function is normally
+ * called after a transfer is done and the host channel is being released.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _hc Identifies the host channel to clean up.
+ */
+void dwc_otg_hc_cleanup(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       dwc_otg_hc_regs_t *hc_regs;
+
+       _hc->xfer_started = 0;
+
+       /*
+        * Clear channel interrupt enables and any unhandled channel interrupt
+        * conditions.
+        */
+       hc_regs = _core_if->host_if->hc_regs[_hc->hc_num];
+       dwc_write_reg32(&hc_regs->hcintmsk, 0);
+       dwc_write_reg32(&hc_regs->hcint, 0xFFFFFFFF);
+
+#ifdef DEBUG
+       del_timer(&_core_if->hc_xfer_timer[_hc->hc_num]);
+       {
+               hcchar_data_t hcchar;
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               if (hcchar.b.chdis) {
+                       DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+                                __func__, _hc->hc_num, hcchar.d32);
+               }
+       }
+#endif 
+}
+
+/**
+ * Sets the channel property that indicates in which frame a periodic transfer
+ * should occur. This is always set to the _next_ frame. This function has no
+ * effect on non-periodic transfers.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _hc Identifies the host channel to set up and its properties.
+ * @param _hcchar Current value of the HCCHAR register for the specified host
+ * channel.
+ */
+static inline void hc_set_even_odd_frame(dwc_otg_core_if_t *_core_if,
+                                        dwc_hc_t *_hc,
+                                        hcchar_data_t *_hcchar)
+{
+       if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+           _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+               hfnum_data_t    hfnum;
+               hfnum.d32 = dwc_read_reg32(&_core_if->host_if->host_global_regs->hfnum);
+               /* 1 if _next_ frame is odd, 0 if it's even */
+               _hcchar->b.oddfrm = (hfnum.b.frnum & 0x1) ? 0 : 1;
+#ifdef DEBUG
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR && _hc->do_split && !_hc->complete_split) {
+                       switch (hfnum.b.frnum & 0x7) {
+                       case 7:
+                               _core_if->hfnum_7_samples++;
+                               _core_if->hfnum_7_frrem_accum += hfnum.b.frrem;
+                               break;
+                       case 0:
+                               _core_if->hfnum_0_samples++;
+                               _core_if->hfnum_0_frrem_accum += hfnum.b.frrem;
+                               break;
+                       default:
+                               _core_if->hfnum_other_samples++;
+                               _core_if->hfnum_other_frrem_accum += hfnum.b.frrem;
+                               break;
+                       }
+               }
+#endif         
+       }
+}
+
+#ifdef DEBUG
+static void hc_xfer_timeout(unsigned long _ptr)
+{
+       hc_xfer_info_t *xfer_info = (hc_xfer_info_t *)_ptr;
+       int hc_num = xfer_info->hc->hc_num;
+       DWC_WARN("%s: timeout on channel %d\n", __func__, hc_num);
+       DWC_WARN("  start_hcchar_val 0x%08x\n", xfer_info->core_if->start_hcchar_val[hc_num]);
+}
+#endif
+
+/*
+ * This function does the setup for a data transfer for a host channel and
+ * starts the transfer. May be called in either Slave mode or DMA mode. In
+ * Slave mode, the caller must ensure that there is sufficient space in the
+ * request queue and Tx Data FIFO.
+ *
+ * For an OUT transfer in Slave mode, it loads a data packet into the
+ * appropriate FIFO. If necessary, additional data packets will be loaded in
+ * the Host ISR.
+ *
+ * For an IN transfer in Slave mode, a data packet is requested. The data
+ * packets are unloaded from the Rx FIFO in the Host ISR. If necessary,
+ * additional data packets are requested in the Host ISR.
+ *
+ * For a PING transfer in Slave mode, the Do Ping bit is set in the HCTSIZ
+ * register along with a packet count of 1 and the channel is enabled. This
+ * causes a single PING transaction to occur. Other fields in HCTSIZ are
+ * simply set to 0 since no data transfer occurs in this case.
+ *
+ * For a PING transfer in DMA mode, the HCTSIZ register is initialized with
+ * all the information required to perform the subsequent data transfer. In
+ * addition, the Do Ping bit is set in the HCTSIZ register. In this case, the
+ * controller performs the entire PING protocol, then starts the data
+ * transfer.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _hc Information needed to initialize the host channel. The xfer_len
+ * value may be reduced to accommodate the max widths of the XferSize and
+ * PktCnt fields in the HCTSIZn register. The multi_count value may be changed
+ * to reflect the final xfer_len value.
+ */
+void dwc_otg_hc_start_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       uint16_t num_packets;
+       uint32_t max_hc_xfer_size = _core_if->core_params->max_transfer_size;
+       uint16_t max_hc_pkt_count = _core_if->core_params->max_packet_count;
+       dwc_otg_hc_regs_t *hc_regs = _core_if->host_if->hc_regs[_hc->hc_num];
+
+       hctsiz.d32 = 0;
+
+       if (_hc->do_ping) {
+               if (!_core_if->dma_enable) {
+                       dwc_otg_hc_do_ping(_core_if, _hc);
+                       _hc->xfer_started = 1;
+                       return;
+               } else {
+                       hctsiz.b.dopng = 1;
+               }
+       }
+
+       if (_hc->do_split) {
+               num_packets = 1;
+
+               if (_hc->complete_split && !_hc->ep_is_in) {
+                       /* For CSPLIT OUT Transfer, set the size to 0 so the
+                        * core doesn't expect any data written to the FIFO */
+                       _hc->xfer_len = 0;
+               } else if (_hc->ep_is_in || (_hc->xfer_len > _hc->max_packet)) {
+                       _hc->xfer_len = _hc->max_packet;
+               } else if (!_hc->ep_is_in && (_hc->xfer_len > 188)) {
+                       _hc->xfer_len = 188;
+               }
+
+               hctsiz.b.xfersize = _hc->xfer_len;
+       } else {
+               /*
+                * Ensure that the transfer length and packet count will fit
+                * in the widths allocated for them in the HCTSIZn register.
+                */
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                   _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       /*
+                        * Make sure the transfer size is no larger than one
+                        * (micro)frame's worth of data. (A check was done
+                        * when the periodic transfer was accepted to ensure
+                        * that a (micro)frame's worth of data can be
+                        * programmed into a channel.)
+                        */
+                       uint32_t max_periodic_len = _hc->multi_count * _hc->max_packet;
+                       if (_hc->xfer_len > max_periodic_len) {
+                               _hc->xfer_len = max_periodic_len;
+                       } else {
+                       }
+               } else if (_hc->xfer_len > max_hc_xfer_size) {
+                       /* Make sure that xfer_len is a multiple of max packet size. */
+                       _hc->xfer_len = max_hc_xfer_size - _hc->max_packet + 1;
+               }
+
+               if (_hc->xfer_len > 0) {
+                       num_packets = (_hc->xfer_len + _hc->max_packet - 1) / _hc->max_packet;
+                       if (num_packets > max_hc_pkt_count) {
+                               num_packets = max_hc_pkt_count;
+                               _hc->xfer_len = num_packets * _hc->max_packet;
+                       }
+               } else {
+                       /* Need 1 packet for transfer length of 0. */
+                       num_packets = 1;
+               }
+
+               if (_hc->ep_is_in) {
+                       /* Always program an integral # of max packets for IN transfers. */
+                       _hc->xfer_len = num_packets * _hc->max_packet;
+               }
+
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                   _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       /*
+                        * Make sure that the multi_count field matches the
+                        * actual transfer length.
+                        */
+                       _hc->multi_count = num_packets;
+
+               }
+
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       /* Set up the initial PID for the transfer. */
+                       if (_hc->speed == DWC_OTG_EP_SPEED_HIGH) {
+                               if (_hc->ep_is_in) {
+                                       if (_hc->multi_count == 1) {
+                                               _hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+                                       } else if (_hc->multi_count == 2) {
+                                               _hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+                                       } else {
+                                               _hc->data_pid_start = DWC_OTG_HC_PID_DATA2;
+                                       }
+                               } else {
+                                       if (_hc->multi_count == 1) {
+                                               _hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+                                       } else {
+                                               _hc->data_pid_start = DWC_OTG_HC_PID_MDATA;
+                                       }
+                               }
+                       } else {
+                               _hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+                       }
+               }
+
+               hctsiz.b.xfersize = _hc->xfer_len;
+       }
+
+       _hc->start_pkt_count = num_packets;
+       hctsiz.b.pktcnt = num_packets;
+       hctsiz.b.pid = _hc->data_pid_start;
+       dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num);
+       DWC_DEBUGPL(DBG_HCDV, "  Xfer Size: %d\n", hctsiz.b.xfersize);
+       DWC_DEBUGPL(DBG_HCDV, "  Num Pkts: %d\n", hctsiz.b.pktcnt);
+       DWC_DEBUGPL(DBG_HCDV, "  Start PID: %d\n", hctsiz.b.pid);
+
+       if (_core_if->dma_enable) {
+#ifdef DEBUG
+if(((uint32_t)_hc->xfer_buff)%4)
+printk("dwc_otg_hc_start_transfer _hc->xfer_buff not 4 byte alignment\n");
+#endif
+               dwc_write_reg32(&hc_regs->hcdma, (uint32_t)_hc->xfer_buff);
+       }
+
+       /* Start the split */
+       if (_hc->do_split) {
+               hcsplt_data_t hcsplt;
+               hcsplt.d32 = dwc_read_reg32 (&hc_regs->hcsplt);
+               hcsplt.b.spltena = 1;
+               dwc_write_reg32(&hc_regs->hcsplt, hcsplt.d32);
+       }
+
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       hcchar.b.multicnt = _hc->multi_count;
+       hc_set_even_odd_frame(_core_if, _hc, &hcchar);
+#ifdef DEBUG
+       _core_if->start_hcchar_val[_hc->hc_num] = hcchar.d32;
+       if (hcchar.b.chdis) {
+               DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+                        __func__, _hc->hc_num, hcchar.d32);
+       }
+#endif 
+
+       /* Set host channel enable after all other setup is complete. */
+       hcchar.b.chen = 1;
+       hcchar.b.chdis = 0;
+       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+       _hc->xfer_started = 1;
+       _hc->requests++;
+
+       if (!_core_if->dma_enable && !_hc->ep_is_in && _hc->xfer_len > 0) {
+               /* Load OUT packet into the appropriate Tx FIFO. */
+               dwc_otg_hc_write_packet(_core_if, _hc);
+       }
+
+#ifdef DEBUG
+       /* Start a timer for this transfer. */
+       _core_if->hc_xfer_timer[_hc->hc_num].function = hc_xfer_timeout;
+       _core_if->hc_xfer_info[_hc->hc_num].core_if = _core_if;
+       _core_if->hc_xfer_info[_hc->hc_num].hc = _hc;
+       _core_if->hc_xfer_timer[_hc->hc_num].data = (unsigned long)(&_core_if->hc_xfer_info[_hc->hc_num]);
+       _core_if->hc_xfer_timer[_hc->hc_num].expires = jiffies + (HZ*10);
+       add_timer(&_core_if->hc_xfer_timer[_hc->hc_num]);
+#endif
+}
+
+/**
+ * This function continues a data transfer that was started by previous call
+ * to <code>dwc_otg_hc_start_transfer</code>. The caller must ensure there is
+ * sufficient space in the request queue and Tx Data FIFO. This function
+ * should only be called in Slave mode. In DMA mode, the controller acts
+ * autonomously to complete transfers programmed to a host channel.
+ *
+ * For an OUT transfer, a new data packet is loaded into the appropriate FIFO
+ * if there is any data remaining to be queued. For an IN transfer, another
+ * data packet is always requested. For the SETUP phase of a control transfer,
+ * this function does nothing.
+ *
+ * @return 1 if a new request is queued, 0 if no more requests are required
+ * for this transfer.
+ */
+int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num);
+
+       if (_hc->do_split) {
+               /* SPLITs always queue just once per channel */
+               return 0;
+       } else if (_hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+               /* SETUPs are queued only once since they can't be NAKed. */
+               return 0;
+       } else if (_hc->ep_is_in) {
+               /*
+                * Always queue another request for other IN transfers. If
+                * back-to-back INs are issued and NAKs are received for both,
+                * the driver may still be processing the first NAK when the
+                * second NAK is received. When the interrupt handler clears
+                * the NAK interrupt for the first NAK, the second NAK will
+                * not be seen. So we can't depend on the NAK interrupt
+                * handler to requeue a NAKed request. Instead, IN requests
+                * are issued each time this function is called. When the
+                * transfer completes, the extra requests for the channel will
+                * be flushed.
+                */
+               hcchar_data_t hcchar;
+               dwc_otg_hc_regs_t *hc_regs = _core_if->host_if->hc_regs[_hc->hc_num];
+
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               hc_set_even_odd_frame(_core_if, _hc, &hcchar);
+               hcchar.b.chen = 1;
+               hcchar.b.chdis = 0;
+               DWC_DEBUGPL(DBG_HCDV, "  IN xfer: hcchar = 0x%08x\n", hcchar.d32);
+               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+               _hc->requests++;
+               return 1;
+       } else {
+               /* OUT transfers. */
+               if (_hc->xfer_count < _hc->xfer_len) {
+                       if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                           _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                               hcchar_data_t hcchar;
+                               dwc_otg_hc_regs_t *hc_regs;
+                               hc_regs = _core_if->host_if->hc_regs[_hc->hc_num];
+                               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+                               hc_set_even_odd_frame(_core_if, _hc, &hcchar);
+                       }
+
+                       /* Load OUT packet into the appropriate Tx FIFO. */
+                       dwc_otg_hc_write_packet(_core_if, _hc);
+                       _hc->requests++;
+                       return 1;
+               } else {
+                       return 0;
+               }
+       }
+}
+
+/**
+ * Starts a PING transfer. This function should only be called in Slave mode.
+ * The Do Ping bit is set in the HCTSIZ register, then the channel is enabled.
+ */
+void dwc_otg_hc_do_ping(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       dwc_otg_hc_regs_t *hc_regs = _core_if->host_if->hc_regs[_hc->hc_num];
+
+       DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, _hc->hc_num);
+
+       hctsiz.d32 = 0;
+       hctsiz.b.dopng = 1;
+       hctsiz.b.pktcnt = 1;
+       dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       hcchar.b.chen = 1;
+       hcchar.b.chdis = 0;
+       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+}
+
+/*
+ * This function writes a packet into the Tx FIFO associated with the Host
+ * Channel. For a channel associated with a non-periodic EP, the non-periodic
+ * Tx FIFO is written. For a channel associated with a periodic EP, the
+ * periodic Tx FIFO is written. This function should only be called in Slave
+ * mode.
+ *
+ * Upon return the xfer_buff and xfer_count fields in _hc are incremented by
+ * then number of bytes written to the Tx FIFO.
+ */
+void dwc_otg_hc_write_packet(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       uint32_t i;
+       uint32_t remaining_count;
+       uint32_t byte_count;
+       uint32_t dword_count;
+
+       uint32_t *data_buff = (uint32_t *)(_hc->xfer_buff);
+       uint32_t *data_fifo = _core_if->data_fifo[_hc->hc_num];
+
+       remaining_count = _hc->xfer_len - _hc->xfer_count;
+       if (remaining_count > _hc->max_packet) {
+               byte_count = _hc->max_packet;
+       } else {
+               byte_count = remaining_count;
+       }
+
+       dword_count = (byte_count + 3) / 4;
+
+       if ((((unsigned long)data_buff) & 0x3) == 0) {
+               /* xfer_buff is DWORD aligned. */
+               for (i = 0; i < dword_count; i++, data_buff++) {
+                       dwc_write_reg32(data_fifo, *data_buff);
+               }
+       } else {
+               /* xfer_buff is not DWORD aligned. */
+               for (i = 0; i < dword_count; i++, data_buff++) {
+                       dwc_write_reg32(data_fifo, get_unaligned(data_buff));
+               }
+       }
+
+       _hc->xfer_count += byte_count;
+       _hc->xfer_buff += byte_count;
+}
+
+/**
+ * Gets the current USB frame number. This is the frame number from the last 
+ * SOF packet.  
+ */
+uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t *_core_if)
+{
+       dsts_data_t dsts;
+       dsts.d32 = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->dsts);
+
+       /* read current frame/microfreme number from DSTS register */
+       return dsts.b.soffn;
+}
+
+/**
+ * This function reads a setup packet from the Rx FIFO into the destination 
+ * buffer.  This function is called from the Rx Status Queue Level (RxStsQLvl)
+ * Interrupt routine when a SETUP packet has been received in Slave mode.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _dest Destination buffer for packet data.
+ */
+void dwc_otg_read_setup_packet(dwc_otg_core_if_t *_core_if, uint32_t *_dest)
+{
+       /* Get the 8 bytes of a setup transaction data */
+
+       /* Pop 2 DWORDS off the receive data FIFO into memory */
+       _dest[0] = dwc_read_reg32(_core_if->data_fifo[0]);
+       _dest[1] = dwc_read_reg32(_core_if->data_fifo[0]);
+    //_dest[0] = dwc_read_datafifo32(_core_if->data_fifo[0]);
+       //_dest[1] = dwc_read_datafifo32(_core_if->data_fifo[0]);
+}
+
+
+/**
+ * This function enables EP0 OUT to receive SETUP packets and configures EP0 
+ * IN for transmitting packets.  It is normally called when the
+ * "Enumeration Done" interrupt occurs.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP0 data.
+ */
+void dwc_otg_ep0_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+        dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+       dsts_data_t dsts;
+       depctl_data_t diepctl;
+       depctl_data_t doepctl;
+       dctl_data_t dctl ={.d32=0};        
+
+       /* Read the Device Status and Endpoint 0 Control registers */
+       dsts.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dsts);
+       diepctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl);
+       doepctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl);
+
+       /* Set the MPS of the IN EP based on the enumeration speed */
+       switch (dsts.b.enumspd) {
+       case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+       case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+       case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+               diepctl.b.mps = DWC_DEP0CTL_MPS_64;
+               break;
+       case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+               diepctl.b.mps = DWC_DEP0CTL_MPS_8;
+               break;
+       }
+
+       dwc_write_reg32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+
+       /* Enable OUT EP for receive */
+       doepctl.b.epena = 1;
+       dwc_write_reg32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+
+#ifdef VERBOSE
+        DWC_DEBUGPL(DBG_PCDV,"doepctl0=%0x\n", 
+                    dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl));
+        DWC_DEBUGPL(DBG_PCDV,"diepctl0=%0x\n", 
+                    dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl));        
+#endif
+        dctl.b.cgnpinnak = 1;
+        dwc_modify_reg32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+        DWC_DEBUGPL(DBG_PCDV,"dctl=%0x\n", 
+                    dwc_read_reg32(&dev_if->dev_global_regs->dctl));
+}
+
+/**
+ * This function activates an EP.  The Device EP control register for
+ * the EP is configured as defined in the ep structure.  Note: This
+ * function is not used for EP0.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP to activate.
+ */
+void dwc_otg_ep_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+        dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+       depctl_data_t depctl;
+       volatile uint32_t *addr;
+        daint_data_t daintmsk = {.d32=0};
+
+        DWC_DEBUGPL(DBG_PCDV, "%s() EP%d-%s\n", __func__, _ep->num, 
+                    (_ep->is_in?"IN":"OUT"));
+        
+       /* Read DEPCTLn register */
+       if (_ep->is_in == 1) {
+               addr = &dev_if->in_ep_regs[_ep->num]->diepctl;
+                daintmsk.ep.in = 1<<_ep->num;
+        } else {
+               addr = &dev_if->out_ep_regs[_ep->num]->doepctl;
+                daintmsk.ep.out = 1<<_ep->num;
+       }
+        
+        /* If the EP is already active don't change the EP Control
+         * register. */
+        depctl.d32 = dwc_read_reg32(addr);
+       if (!depctl.b.usbactep) {
+                depctl.b.mps = _ep->maxpacket;
+                depctl.b.eptype = _ep->type;
+                depctl.b.txfnum = _ep->tx_fifo_num;
+                
+                if (_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                       depctl.b.setd0pid = 1;  // ???
+                } else {
+                        depctl.b.setd0pid = 1;
+                }
+                depctl.b.usbactep = 1;
+
+                dwc_write_reg32(addr, depctl.d32);
+                DWC_DEBUGPL(DBG_PCDV,"DEPCTL=%08x\n", dwc_read_reg32(addr));
+        }
+        
+
+        /* Enable the Interrupt for this EP */
+        dwc_modify_reg32(&dev_if->dev_global_regs->daintmsk,
+                         0, daintmsk.d32);
+        DWC_DEBUGPL(DBG_PCDV,"DAINTMSK=%0x\n", 
+                    dwc_read_reg32(&dev_if->dev_global_regs->daintmsk));
+       _ep->stall_clear_flag = 0;
+       return;
+}
+
+/**
+ * This function deactivates an EP.  This is done by clearing the USB Active 
+ * EP bit in the Device EP control register.  Note: This function is not used 
+ * for EP0. EP0 cannot be deactivated.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP to deactivate.
+ */
+void dwc_otg_ep_deactivate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+       depctl_data_t depctl ={.d32 = 0};
+       volatile uint32_t *addr;
+        daint_data_t daintmsk = {.d32=0};
+        
+       /* Read DEPCTLn register */
+       if (_ep->is_in == 1) {
+               addr = &_core_if->dev_if->in_ep_regs[_ep->num]->diepctl;
+                daintmsk.ep.in = 1<<_ep->num;
+       } else {
+               addr = &_core_if->dev_if->out_ep_regs[_ep->num]->doepctl;
+                daintmsk.ep.out = 1<<_ep->num;
+       }
+
+       depctl.b.usbactep = 0;
+       dwc_write_reg32(addr, depctl.d32);
+
+        /* Disable the Interrupt for this EP */
+        dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->daintmsk,
+                         daintmsk.d32, 0);
+
+       return;
+}
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer.  For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR.  the ISR.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP to start the transfer on.
+ */
+void dwc_otg_ep_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+        /** @todo Refactor this funciton to check the transfer size
+         * count value does not execed the number bits in the Transfer
+         * count register. */
+       depctl_data_t depctl;
+       deptsiz_data_t deptsiz;
+        gintmsk_data_t intr_mask = { .d32 = 0};
+
+#ifdef CHECK_PACKET_COUNTER_WIDTH
+        const uint32_t MAX_XFER_SIZE = 
+                _core_if->core_params->max_transfer_size;
+        const uint32_t MAX_PKT_COUNT = 
+                _core_if->core_params->max_packet_count;
+        uint32_t num_packets;
+        uint32_t transfer_len;
+        dwc_otg_dev_out_ep_regs_t *out_regs = 
+                _core_if->dev_if->out_ep_regs[_ep->num];
+        dwc_otg_dev_in_ep_regs_t *in_regs = 
+                _core_if->dev_if->in_ep_regs[_ep->num];
+        gnptxsts_data_t txstatus;
+
+        int lvl = SET_DEBUG_LEVEL(DBG_PCD);
+
+        
+        DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+                    "xfer_buff=%p start_xfer_buff=%p\n",
+                    _ep->num, (_ep->is_in?"IN":"OUT"), _ep->xfer_len, 
+                    _ep->xfer_count, _ep->xfer_buff, _ep->start_xfer_buff);
+
+        transfer_len = _ep->xfer_len - _ep->xfer_count;
+        if (transfer_len > MAX_XFER_SIZE) {
+                transfer_len = MAX_XFER_SIZE;
+        }
+        if (transfer_len == 0) {
+                num_packets = 1;
+                /* OUT EP to recieve Zero-length packet set transfer
+                 * size to maxpacket size. */
+                if (!_ep->is_in) {
+                        transfer_len = _ep->maxpacket;                
+                }
+        } else {
+                num_packets = 
+                        (transfer_len + _ep->maxpacket - 1) / _ep->maxpacket;
+                if (num_packets > MAX_PKT_COUNT) {
+                        num_packets = MAX_PKT_COUNT;
+                }
+        }
+        DWC_DEBUGPL(DBG_PCD, "transfer_len=%d #pckt=%d\n", transfer_len, 
+                    num_packets);
+
+        deptsiz.b.xfersize = transfer_len;
+        deptsiz.b.pktcnt = num_packets;
+
+       /* IN endpoint */
+       if (_ep->is_in == 1) {
+               depctl.d32 = dwc_read_reg32(&in_regs->diepctl);
+        } else {/* OUT endpoint */
+                depctl.d32 = dwc_read_reg32(&out_regs->doepctl);
+        }
+        
+        /* EP enable, IN data in FIFO */
+        depctl.b.cnak = 1;
+        depctl.b.epena = 1;
+       /* IN endpoint */
+       if (_ep->is_in == 1) {
+                txstatus.d32 = 
+                        dwc_read_reg32(&_core_if->core_global_regs->gnptxsts);
+                if (txstatus.b.nptxqspcavail == 0) {
+                        DWC_DEBUGPL(DBG_ANY, "TX Queue Full (0x%0x)\n", 
+                                    txstatus.d32);
+                        return;
+                }
+                dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+               dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+                /** 
+                 * Enable the Non-Periodic Tx FIFO empty interrupt, the
+                 * data will be written into the fifo by the ISR.
+                 */ 
+                if (_core_if->dma_enable) {
+                       dwc_write_reg32(&in_regs->diepdma, (uint32_t) _ep->xfer_buff);
+               } else {
+                       if (_core_if->en_multiple_tx_fifo == 0) {
+                        intr_mask.b.nptxfempty = 1;
+                        dwc_modify_reg32( &_core_if->core_global_regs->gintsts,
+                                          intr_mask.d32, 0);
+                        dwc_modify_reg32( &_core_if->core_global_regs->gintmsk,
+                                          intr_mask.d32, intr_mask.d32);
+                       } else {
+                           /* Enable the Tx FIFO Empty Interrupt for this EP */
+                           if (_ep->xfer_len > 0 &&
+                                        _ep->type != DWC_OTG_EP_TYPE_ISOC) {
+                                       uint32_t fifoemptymsk = 0;
+                                       fifoemptymsk = (0x1 << _ep->num);
+                                       dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->
+                                                       dtknqr4_fifoemptymsk,0, fifoemptymsk);
+                }
+                       }
+               }
+       } else {            /* OUT endpoint */
+               dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+               dwc_write_reg32(&out_regs->doepctl, depctl.d32);
+                if (_core_if->dma_enable) {
+                       dwc_write_reg32(&out_regs->doepdma,(uint32_t) _ep->xfer_buff);
+               }
+        }
+        DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n", 
+                    dwc_read_reg32(&out_regs->doepctl),
+                    dwc_read_reg32(&out_regs->doeptsiz));
+        DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n", 
+                    dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk),
+                    dwc_read_reg32(&_core_if->core_global_regs->gintmsk));        
+
+        SET_DEBUG_LEVEL(lvl);
+#endif
+        DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+        
+        DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+                    "xfer_buff=%p start_xfer_buff=%p\n",
+                    _ep->num, (_ep->is_in?"IN":"OUT"), _ep->xfer_len, 
+                    _ep->xfer_count, _ep->xfer_buff, _ep->start_xfer_buff);
+
+       /* IN endpoint */
+       if (_ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t * in_regs = _core_if->dev_if->in_ep_regs[_ep->num];
+               gnptxsts_data_t gtxstatus;
+               gtxstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts);
+               if (_core_if->en_multiple_tx_fifo == 0 &&
+                       gtxstatus.b.nptxqspcavail == 0) {
+#ifdef DEBUG
+                        DWC_PRINT("TX Queue Full (0x%0x)\n", gtxstatus.d32);
+#endif
+                        //return;
+                        MDELAY(100); //james
+                }
+                
+               depctl.d32 = dwc_read_reg32(&(in_regs->diepctl));
+               deptsiz.d32 = dwc_read_reg32(&(in_regs->dieptsiz));
+
+                /* Zero Length Packet? */
+                if (_ep->xfer_len == 0) {
+                        deptsiz.b.xfersize = 0;
+                        deptsiz.b.pktcnt = 1;
+                } else {
+                        
+                        /* Program the transfer size and packet count
+                         *  as follows: xfersize = N * maxpacket +
+                         *  short_packet pktcnt = N + (short_packet
+                         *  exist ? 1 : 0)  
+                         */
+                        deptsiz.b.xfersize = _ep->xfer_len;
+                       deptsiz.b.pktcnt = (_ep->xfer_len - 1 + _ep->maxpacket) / _ep->maxpacket;
+               }
+
+                dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+
+               /* Write the DMA register */
+               if (_core_if->dma_enable) {
+#if 1 // winder
+                       dma_cache_wback_inv((unsigned long) _ep->xfer_buff, _ep->xfer_len); // winder
+                       dwc_write_reg32 (&(in_regs->diepdma), 
+                                        CPHYSADDR((uint32_t)_ep->xfer_buff)); // winder
+#else
+                        dwc_write_reg32 (&(in_regs->diepdma),
+                                        (uint32_t)_ep->dma_addr);
+#endif
+               } else {
+                       if (_ep->type != DWC_OTG_EP_TYPE_ISOC) {
+                       /** 
+                        * Enable the Non-Periodic Tx FIFO empty interrupt,
+                                * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+                        * the data will be written into the fifo by the ISR.
+                        */ 
+                           if (_core_if->en_multiple_tx_fifo == 0) {
+                        intr_mask.b.nptxfempty = 1;
+                        dwc_modify_reg32( &_core_if->core_global_regs->gintsts,
+                                          intr_mask.d32, 0);
+                        dwc_modify_reg32( &_core_if->core_global_regs->gintmsk,
+                                          intr_mask.d32, intr_mask.d32);
+                               } else {
+                                   /* Enable the Tx FIFO Empty Interrupt for this EP */
+                                   if (_ep->xfer_len > 0) {
+                                               uint32_t fifoemptymsk = 0;
+                                               fifoemptymsk = 1 << _ep->num;
+                                               dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->
+                                                                 dtknqr4_fifoemptymsk,0,fifoemptymsk);
+                                       }
+                               }
+                       }
+                }
+                
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+               if (_core_if->dma_enable) {
+               depctl.d32 = dwc_read_reg32 (&_core_if->dev_if->in_ep_regs[0]->diepctl);
+               depctl.b.nextep = _ep->num;
+               dwc_write_reg32 (&_core_if->dev_if->in_ep_regs[0]->diepctl, depctl.d32);
+
+               }
+       } else {
+                /* OUT endpoint */
+           dwc_otg_dev_out_ep_regs_t * out_regs = _core_if->dev_if->out_ep_regs[_ep->num];
+
+               depctl.d32 = dwc_read_reg32(&(out_regs->doepctl));
+               deptsiz.d32 = dwc_read_reg32(&(out_regs->doeptsiz));
+
+               /* Program the transfer size and packet count as follows:
+                 * 
+                *  pktcnt = N                                         
+                *  xfersize = N * maxpacket
+                 */
+                if (_ep->xfer_len == 0) {
+                        /* Zero Length Packet */
+                        deptsiz.b.xfersize = _ep->maxpacket;
+                        deptsiz.b.pktcnt = 1;
+                } else {
+                       deptsiz.b.pktcnt = (_ep->xfer_len + (_ep->maxpacket - 1)) / _ep->maxpacket;
+                        deptsiz.b.xfersize = deptsiz.b.pktcnt * _ep->maxpacket;
+                }
+               dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+
+                DWC_DEBUGPL(DBG_PCDV, "ep%d xfersize=%d pktcnt=%d\n",
+                             _ep->num, deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+               if (_core_if->dma_enable) {
+#if 1 // winder
+                       dwc_write_reg32 (&(out_regs->doepdma), 
+                                        CPHYSADDR((uint32_t)_ep->xfer_buff)); // winder
+#else
+                       dwc_write_reg32 (&(out_regs->doepdma), 
+                                        (uint32_t)_ep->dma_addr);
+#endif
+               }
+
+               if (_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                        /** @todo NGS: dpid is read-only. Use setd0pid
+                         * or setd1pid. */
+                       if (_ep->even_odd_frame) {
+                               depctl.b.setd1pid = 1;
+                       } else {
+                               depctl.b.setd0pid = 1;
+                       }
+               }
+
+               /* EP enable */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+
+               dwc_write_reg32(&out_regs->doepctl, depctl.d32);
+
+                DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n", 
+                            dwc_read_reg32(&out_regs->doepctl),
+                            dwc_read_reg32(&out_regs->doeptsiz));
+                DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n", 
+                            dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk),
+                            dwc_read_reg32(&_core_if->core_global_regs->gintmsk));        
+       }
+}
+
+
+/**
+ * This function does the setup for a data transfer for EP0 and starts
+ * the transfer.  For an IN transfer, the packets will be loaded into
+ * the appropriate Tx FIFO in the ISR. For OUT transfers, the packets are
+ * unloaded from the Rx FIFO in the ISR.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP0 data.
+ */
+void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+       volatile depctl_data_t depctl;
+       volatile deptsiz0_data_t deptsiz;
+        gintmsk_data_t intr_mask = { .d32 = 0};
+
+        DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+                    "xfer_buff=%p start_xfer_buff=%p total_len=%d\n",
+                    _ep->num, (_ep->is_in?"IN":"OUT"), _ep->xfer_len, 
+                    _ep->xfer_count, _ep->xfer_buff, _ep->start_xfer_buff,
+                    _ep->total_len);
+        _ep->total_len = _ep->xfer_len;
+
+       /* IN endpoint */
+       if (_ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t * in_regs = _core_if->dev_if->in_ep_regs[0];
+               gnptxsts_data_t gtxstatus;
+               gtxstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts);
+               if (_core_if->en_multiple_tx_fifo == 0 &&
+                       gtxstatus.b.nptxqspcavail == 0) {
+#ifdef DEBUG
+                        deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz);
+                        DWC_DEBUGPL(DBG_PCD,"DIEPCTL0=%0x\n", 
+                                    dwc_read_reg32(&in_regs->diepctl));
+                        DWC_DEBUGPL(DBG_PCD, "DIEPTSIZ0=%0x (sz=%d, pcnt=%d)\n", 
+                                    deptsiz.d32, deptsiz.b.xfersize,deptsiz.b.pktcnt);
+                       DWC_PRINT("TX Queue or FIFO Full (0x%0x)\n", gtxstatus.d32);
+#endif /*  */
+                                               printk("TX Queue or FIFO Full!!!!\n"); // test-only
+                        //return;
+                        MDELAY(100); //james
+                }
+
+                depctl.d32 = dwc_read_reg32(&in_regs->diepctl);
+               deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz);
+
+                /* Zero Length Packet? */
+                if (_ep->xfer_len == 0) {
+                        deptsiz.b.xfersize = 0;
+                        deptsiz.b.pktcnt = 1;
+                } else {
+                        /* Program the transfer size and packet count
+                         *  as follows: xfersize = N * maxpacket +
+                         *  short_packet pktcnt = N + (short_packet
+                         *  exist ? 1 : 0)  
+                         */
+                       if (_ep->xfer_len > _ep->maxpacket) {
+                               _ep->xfer_len = _ep->maxpacket;
+                               deptsiz.b.xfersize = _ep->maxpacket;
+                       }
+                       else {
+                               deptsiz.b.xfersize = _ep->xfer_len;
+                       }
+                        deptsiz.b.pktcnt = 1;
+
+               }
+                dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+                DWC_DEBUGPL(DBG_PCDV, "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+                            _ep->xfer_len, deptsiz.b.xfersize,deptsiz.b.pktcnt, deptsiz.d32);
+
+               /* Write the DMA register */
+               if (_core_if->dma_enable) {
+                       dwc_write_reg32(&(in_regs->diepdma), (uint32_t) _ep->dma_addr);
+               }
+
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+                /** 
+                 * Enable the Non-Periodic Tx FIFO empty interrupt, the
+                 * data will be written into the fifo by the ISR.
+                 */ 
+                if (!_core_if->dma_enable) {
+                       if (_core_if->en_multiple_tx_fifo == 0) {
+                        intr_mask.b.nptxfempty = 1;
+                               dwc_modify_reg32(&_core_if->core_global_regs->gintsts, intr_mask.d32, 0);
+                               dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, intr_mask.d32,
+                                                 intr_mask.d32);
+                       } else {
+                           /* Enable the Tx FIFO Empty Interrupt for this EP */
+                           if (_ep->xfer_len > 0) {
+                                       uint32_t fifoemptymsk = 0;
+                                       fifoemptymsk |= 1 << _ep->num;
+                                       dwc_modify_reg32(&_core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+                                                0, fifoemptymsk);
+                }
+                
+                       }
+               }
+       } else {
+           /* OUT endpoint */
+           dwc_otg_dev_out_ep_regs_t * out_regs = _core_if->dev_if->out_ep_regs[_ep->num];
+
+               depctl.d32 = dwc_read_reg32(&out_regs->doepctl);
+               deptsiz.d32 = dwc_read_reg32(&out_regs->doeptsiz);
+
+               /* Program the transfer size and packet count as follows:
+                *  xfersize = N * (maxpacket + 4 - (maxpacket % 4))
+                *  pktcnt = N                                          */
+                if (_ep->xfer_len == 0) {
+                        /* Zero Length Packet */
+                        deptsiz.b.xfersize = _ep->maxpacket;
+                        deptsiz.b.pktcnt = 1;
+                } else {
+                       deptsiz.b.pktcnt = (_ep->xfer_len + (_ep->maxpacket - 1)) / _ep->maxpacket;
+                        deptsiz.b.xfersize = deptsiz.b.pktcnt * _ep->maxpacket;
+                }
+                
+               dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+                DWC_DEBUGPL(DBG_PCDV, "len=%d  xfersize=%d pktcnt=%d\n",
+                            _ep->xfer_len, deptsiz.b.xfersize,deptsiz.b.pktcnt);
+
+               if (_core_if->dma_enable) {
+                       dwc_write_reg32(&(out_regs->doepdma), (uint32_t) _ep->dma_addr);
+               }
+
+               /* EP enable */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               dwc_write_reg32 (&(out_regs->doepctl), depctl.d32);
+       }
+}
+
+/**
+ * This function continues control IN transfers started by
+ * dwc_otg_ep0_start_transfer, when the transfer does not fit in a
+ * single packet.  NOTE: The DIEPCTL0/DOEPCTL0 registers only have one
+ * bit for the packet count.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP0 data.
+ */
+void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+       depctl_data_t depctl;
+       deptsiz0_data_t deptsiz;
+        gintmsk_data_t intr_mask = { .d32 = 0};
+
+       if (_ep->is_in == 1) {
+               dwc_otg_dev_in_ep_regs_t *in_regs = 
+                       _core_if->dev_if->in_ep_regs[0];
+                gnptxsts_data_t tx_status = {.d32 = 0};
+
+                tx_status.d32 = dwc_read_reg32( &_core_if->core_global_regs->gnptxsts );
+                /** @todo Should there be check for room in the Tx
+                 * Status Queue.  If not remove the code above this comment. */
+
+                depctl.d32 = dwc_read_reg32(&in_regs->diepctl);
+               deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz);
+
+                /* Program the transfer size and packet count
+                 *  as follows: xfersize = N * maxpacket +
+                 *  short_packet pktcnt = N + (short_packet
+                 *  exist ? 1 : 0)  
+                 */
+                deptsiz.b.xfersize = (_ep->total_len - _ep->xfer_count) > _ep->maxpacket ? _ep->maxpacket : 
+                        (_ep->total_len - _ep->xfer_count);
+                deptsiz.b.pktcnt = 1;
+               _ep->xfer_len += deptsiz.b.xfersize;
+
+                dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+                DWC_DEBUGPL(DBG_PCDV, "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+                            _ep->xfer_len, 
+                            deptsiz.b.xfersize, deptsiz.b.pktcnt, deptsiz.d32);
+
+               /* Write the DMA register */
+               if (_core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+                       dwc_write_reg32 (&(in_regs->diepdma), 
+                                        CPHYSADDR((uint32_t)_ep->dma_addr)); // winder
+               }
+
+               /* EP enable, IN data in FIFO */
+               depctl.b.cnak = 1;
+               depctl.b.epena = 1;
+               dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+                /** 
+                 * Enable the Non-Periodic Tx FIFO empty interrupt, the
+                 * data will be written into the fifo by the ISR.
+                 */ 
+                if (!_core_if->dma_enable) {
+                        /* First clear it from GINTSTS */
+                        intr_mask.b.nptxfempty = 1;
+                        dwc_write_reg32( &_core_if->core_global_regs->gintsts,
+                                         intr_mask.d32 );
+
+                        dwc_modify_reg32( &_core_if->core_global_regs->gintmsk,
+                                          intr_mask.d32, intr_mask.d32);
+                }
+                
+       } 
+
+}
+
+#ifdef DEBUG
+void dump_msg(const u8 *buf, unsigned int length)
+{
+       unsigned int    start, num, i;
+       char            line[52], *p;
+
+       if (length >= 512)
+               return;
+       start = 0;
+       while (length > 0) {
+               num = min(length, 16u);
+               p = line;
+               for (i = 0; i < num; ++i) {
+                       if (i == 8)
+                               *p++ = ' ';
+                       sprintf(p, " %02x", buf[i]);
+                       p += 3;
+               }
+               *p = 0;
+               DWC_PRINT( "%6x: %s\n", start, line);
+               buf += num;
+               start += num;
+               length -= num;
+       }
+}
+#else
+static inline void dump_msg(const u8 *buf, unsigned int length)
+{
+}
+#endif
+
+/**
+ * This function writes a packet into the Tx FIFO associated with the
+ * EP.  For non-periodic EPs the non-periodic Tx FIFO is written.  For
+ * periodic EPs the periodic Tx FIFO associated with the EP is written
+ * with all packets for the next micro-frame.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP to write packet for.
+ * @param _dma Indicates if DMA is being used.
+ */
+void dwc_otg_ep_write_packet(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep, int _dma)
+{
+       /**
+        * The buffer is padded to DWORD on a per packet basis in
+        * slave/dma mode if the MPS is not DWORD aligned.  The last
+        * packet, if short, is also padded to a multiple of DWORD.
+        *
+        * ep->xfer_buff always starts DWORD aligned in memory and is a 
+        * multiple of DWORD in length
+        *
+        * ep->xfer_len can be any number of bytes
+        *
+        * ep->xfer_count is a multiple of ep->maxpacket until the last 
+        *  packet
+        *
+        * FIFO access is DWORD */
+
+       uint32_t i;
+       uint32_t byte_count;
+       uint32_t dword_count;
+       uint32_t *fifo;
+        uint32_t *data_buff = (uint32_t *)_ep->xfer_buff;
+        
+        //DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, _core_if, _ep);
+        if (_ep->xfer_count >= _ep->xfer_len) {
+                DWC_WARN("%s() No data for EP%d!!!\n", __func__, _ep->num);
+                return;                
+        }
+
+       /* Find the byte length of the packet either short packet or MPS */
+       if ((_ep->xfer_len - _ep->xfer_count) < _ep->maxpacket) {
+               byte_count = _ep->xfer_len - _ep->xfer_count;
+       }
+       else {
+               byte_count = _ep->maxpacket;
+       }
+
+       /* Find the DWORD length, padded by extra bytes as neccessary if MPS
+        * is not a multiple of DWORD */
+       dword_count =  (byte_count + 3) / 4;
+
+#ifdef VERBOSE
+        dump_msg(_ep->xfer_buff, byte_count);        
+#endif
+        if (_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+                /**@todo NGS Where are the Periodic Tx FIFO addresses
+                 * intialized?  What should this be? */
+                fifo = _core_if->data_fifo[_ep->tx_fifo_num];
+        } else {
+                fifo = _core_if->data_fifo[_ep->num];
+        }
+        
+        DWC_DEBUGPL((DBG_PCDV|DBG_CILV), "fifo=%p buff=%p *p=%08x bc=%d\n",
+                    fifo, data_buff, *data_buff, byte_count);
+        
+
+       if (!_dma) {
+               for (i=0; i<dword_count; i++, data_buff++) {
+                       dwc_write_reg32( fifo, *data_buff );
+               }
+       }
+
+       _ep->xfer_count += byte_count;
+        _ep->xfer_buff += byte_count;
+#if 1 // winder, why do we need this??
+       _ep->dma_addr += byte_count;
+#endif
+}
+
+/** 
+ * Set the EP STALL.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP to set the stall on.
+ */
+void dwc_otg_ep_set_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+       depctl_data_t depctl;
+       volatile uint32_t *depctl_addr;
+
+        DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, _ep->num, 
+                 (_ep->is_in?"IN":"OUT"));
+
+       if (_ep->is_in == 1) {
+               depctl_addr = &(_core_if->dev_if->in_ep_regs[_ep->num]->diepctl);
+               depctl.d32 = dwc_read_reg32(depctl_addr);
+
+               /* set the disable and stall bits */
+               if (depctl.b.epena) {
+                        depctl.b.epdis = 1;
+                }
+               depctl.b.stall = 1;
+               dwc_write_reg32(depctl_addr, depctl.d32);
+
+       } else {
+               depctl_addr = &(_core_if->dev_if->out_ep_regs[_ep->num]->doepctl);
+               depctl.d32 = dwc_read_reg32(depctl_addr);
+
+               /* set the stall bit */
+               depctl.b.stall = 1;
+               dwc_write_reg32(depctl_addr, depctl.d32);
+       }
+        DWC_DEBUGPL(DBG_PCD,"DEPCTL=%0x\n",dwc_read_reg32(depctl_addr));
+       return;
+}
+
+/** 
+ * Clear the EP STALL.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _ep The EP to clear stall from.
+ */
+void dwc_otg_ep_clear_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep)
+{
+       depctl_data_t depctl;
+       volatile uint32_t *depctl_addr;
+
+        DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, _ep->num, 
+                    (_ep->is_in?"IN":"OUT"));
+
+       if (_ep->is_in == 1) {
+               depctl_addr = &(_core_if->dev_if->in_ep_regs[_ep->num]->diepctl);
+       } else {
+               depctl_addr = &(_core_if->dev_if->out_ep_regs[_ep->num]->doepctl);
+       }
+
+       depctl.d32 = dwc_read_reg32(depctl_addr);
+
+       /* clear the stall bits */
+       depctl.b.stall = 0;
+
+        /* 
+         * USB Spec 9.4.5: For endpoints using data toggle, regardless
+         * of whether an endpoint has the Halt feature set, a
+         * ClearFeature(ENDPOINT_HALT) request always results in the
+         * data toggle being reinitialized to DATA0.
+         */
+        if (_ep->type == DWC_OTG_EP_TYPE_INTR || 
+            _ep->type == DWC_OTG_EP_TYPE_BULK) {
+                depctl.b.setd0pid = 1; /* DATA0 */
+        }
+        
+       dwc_write_reg32(depctl_addr, depctl.d32);
+        DWC_DEBUGPL(DBG_PCD,"DEPCTL=%0x\n",dwc_read_reg32(depctl_addr));
+       return;
+}
+
+/** 
+ * This function reads a packet from the Rx FIFO into the destination
+ * buffer.  To read SETUP data use dwc_otg_read_setup_packet.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _dest   Destination buffer for the packet.
+ * @param _bytes  Number of bytes to copy to the destination.
+ */
+void dwc_otg_read_packet(dwc_otg_core_if_t *_core_if,
+                        uint8_t *_dest, 
+                        uint16_t _bytes)
+{
+       int i;
+       int word_count = (_bytes + 3) / 4;
+
+       volatile uint32_t *fifo = _core_if->data_fifo[0];
+       uint32_t *data_buff = (uint32_t *)_dest;
+
+       /**
+        * @todo Account for the case where _dest is not dword aligned. This
+        * requires reading data from the FIFO into a uint32_t temp buffer,
+        * then moving it into the data buffer.
+        */
+
+        DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p,%d)\n", __func__, 
+                    _core_if, _dest, _bytes);
+
+       for (i=0; i<word_count; i++, data_buff++) {
+               *data_buff = dwc_read_reg32(fifo);
+       }
+
+       return;
+}
+
+
+#ifdef DEBUG
+/**
+ * This functions reads the device registers and prints them
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_dev_registers(dwc_otg_core_if_t *_core_if)
+{
+       int i;
+       volatile uint32_t *addr;
+
+       DWC_PRINT("Device Global Registers\n");
+       addr=&_core_if->dev_if->dev_global_regs->dcfg;
+       DWC_PRINT("DCFG      @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->dev_if->dev_global_regs->dctl;
+       DWC_PRINT("DCTL      @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->dev_if->dev_global_regs->dsts;
+       DWC_PRINT("DSTS      @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->dev_if->dev_global_regs->diepmsk;
+       DWC_PRINT("DIEPMSK   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->dev_if->dev_global_regs->doepmsk;
+       DWC_PRINT("DOEPMSK   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->dev_if->dev_global_regs->daint;
+       DWC_PRINT("DAINT     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->dev_if->dev_global_regs->dtknqr1;
+       DWC_PRINT("DTKNQR1   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+        if (_core_if->hwcfg2.b.dev_token_q_depth > 6) {
+                addr=&_core_if->dev_if->dev_global_regs->dtknqr2;
+                DWC_PRINT("DTKNQR2   @0x%08X : 0x%08X\n",
+                          (uint32_t)addr,dwc_read_reg32(addr));
+        }
+        
+       addr=&_core_if->dev_if->dev_global_regs->dvbusdis;
+       DWC_PRINT("DVBUSID   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+       addr=&_core_if->dev_if->dev_global_regs->dvbuspulse;
+       DWC_PRINT("DVBUSPULSE   @0x%08X : 0x%08X\n",
+                  (uint32_t)addr,dwc_read_reg32(addr));
+
+        if (_core_if->hwcfg2.b.dev_token_q_depth > 14) {
+               addr = &_core_if->dev_if->dev_global_regs->dtknqr3_dthrctl;
+                DWC_PRINT("DTKNQR3   @0x%08X : 0x%08X\n",
+                          (uint32_t)addr, dwc_read_reg32(addr));
+        }
+
+        if (_core_if->hwcfg2.b.dev_token_q_depth > 22) {
+               addr = &_core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+               DWC_PRINT("DTKNQR4       @0x%08X : 0x%08X\n", (uint32_t) addr,
+                          dwc_read_reg32(addr));
+       }
+       for (i = 0; i <= _core_if->dev_if->num_in_eps; i++) {
+               DWC_PRINT("Device IN EP %d Registers\n", i);
+               addr=&_core_if->dev_if->in_ep_regs[i]->diepctl;
+               DWC_PRINT("DIEPCTL   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->in_ep_regs[i]->diepint;
+               DWC_PRINT("DIEPINT   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->in_ep_regs[i]->dieptsiz;
+               DWC_PRINT("DIETSIZ   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->in_ep_regs[i]->diepdma;
+               DWC_PRINT("DIEPDMA   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               
+addr = &_core_if->dev_if->in_ep_regs[i]->dtxfsts;
+               DWC_PRINT("DTXFSTS       @0x%08X : 0x%08X\n", (uint32_t) addr,
+                          dwc_read_reg32(addr));
+       }
+       for (i = 0; i <= _core_if->dev_if->num_out_eps; i++) {
+               DWC_PRINT("Device OUT EP %d Registers\n", i);
+               addr=&_core_if->dev_if->out_ep_regs[i]->doepctl;
+               DWC_PRINT("DOEPCTL   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->out_ep_regs[i]->doepfn;
+               DWC_PRINT("DOEPFN    @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->out_ep_regs[i]->doepint;
+               DWC_PRINT("DOEPINT   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->out_ep_regs[i]->doeptsiz;
+               DWC_PRINT("DOETSIZ   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->dev_if->out_ep_regs[i]->doepdma;
+               DWC_PRINT("DOEPDMA   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       }
+       return;
+}
+
+/**
+ * This function reads the host registers and prints them
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_host_registers(dwc_otg_core_if_t *_core_if)
+{
+       int i;
+       volatile uint32_t *addr;
+
+       DWC_PRINT("Host Global Registers\n");
+       addr=&_core_if->host_if->host_global_regs->hcfg;
+       DWC_PRINT("HCFG      @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->host_if->host_global_regs->hfir;
+       DWC_PRINT("HFIR      @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->host_if->host_global_regs->hfnum;
+       DWC_PRINT("HFNUM     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->host_if->host_global_regs->hptxsts;
+       DWC_PRINT("HPTXSTS   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->host_if->host_global_regs->haint;
+       DWC_PRINT("HAINT     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->host_if->host_global_regs->haintmsk;
+       DWC_PRINT("HAINTMSK  @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=_core_if->host_if->hprt0;
+       DWC_PRINT("HPRT0     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+       for (i=0; i<_core_if->core_params->host_channels; i++) {
+               DWC_PRINT("Host Channel %d Specific Registers\n", i);
+               addr=&_core_if->host_if->hc_regs[i]->hcchar;
+               DWC_PRINT("HCCHAR    @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->host_if->hc_regs[i]->hcsplt;
+               DWC_PRINT("HCSPLT    @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->host_if->hc_regs[i]->hcint;
+               DWC_PRINT("HCINT     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->host_if->hc_regs[i]->hcintmsk;
+               DWC_PRINT("HCINTMSK  @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->host_if->hc_regs[i]->hctsiz;
+               DWC_PRINT("HCTSIZ    @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+               addr=&_core_if->host_if->hc_regs[i]->hcdma;
+               DWC_PRINT("HCDMA     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+       }
+       return;
+}
+
+/**
+ * This function reads the core global registers and prints them
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_global_registers(dwc_otg_core_if_t *_core_if)
+{
+       int i;
+       volatile uint32_t *addr;
+
+       DWC_PRINT("Core Global Registers\n");
+       addr=&_core_if->core_global_regs->gotgctl;
+       DWC_PRINT("GOTGCTL   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gotgint;
+       DWC_PRINT("GOTGINT   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gahbcfg;
+       DWC_PRINT("GAHBCFG   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gusbcfg;
+       DWC_PRINT("GUSBCFG   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->grstctl;
+       DWC_PRINT("GRSTCTL   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gintsts;
+       DWC_PRINT("GINTSTS   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gintmsk;
+       DWC_PRINT("GINTMSK   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->grxstsr;
+       DWC_PRINT("GRXSTSR   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       //addr=&_core_if->core_global_regs->grxstsp;
+       //DWC_PRINT("GRXSTSP   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->grxfsiz;
+       DWC_PRINT("GRXFSIZ   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gnptxfsiz;
+       DWC_PRINT("GNPTXFSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gnptxsts;
+       DWC_PRINT("GNPTXSTS  @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gi2cctl;
+       DWC_PRINT("GI2CCTL   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gpvndctl;
+       DWC_PRINT("GPVNDCTL  @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->ggpio;
+       DWC_PRINT("GGPIO     @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->guid;
+       DWC_PRINT("GUID      @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->gsnpsid;
+       DWC_PRINT("GSNPSID   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->ghwcfg1;
+       DWC_PRINT("GHWCFG1   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->ghwcfg2;
+       DWC_PRINT("GHWCFG2   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->ghwcfg3;
+       DWC_PRINT("GHWCFG3   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->ghwcfg4;
+       DWC_PRINT("GHWCFG4   @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+       addr=&_core_if->core_global_regs->hptxfsiz;
+       DWC_PRINT("HPTXFSIZ  @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+        for (i=0; i<_core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
+               addr=&_core_if->core_global_regs->dptxfsiz_dieptxf[i];
+               DWC_PRINT("DPTXFSIZ[%d] @0x%08X : 0x%08X\n",i,(uint32_t)addr,dwc_read_reg32(addr));
+       }
+
+}
+#endif
+
+/**
+ * Flush a Tx FIFO.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _num Tx FIFO to flush.
+ */
+extern void dwc_otg_flush_tx_fifo( dwc_otg_core_if_t *_core_if, 
+                                   const int _num ) 
+{
+        dwc_otg_core_global_regs_t *global_regs = _core_if->core_global_regs;
+        volatile grstctl_t greset = { .d32 = 0};
+        int count = 0;
+        
+        DWC_DEBUGPL((DBG_CIL|DBG_PCDV), "Flush Tx FIFO %d\n", _num);
+
+        greset.b.txfflsh = 1;
+        greset.b.txfnum = _num;
+        dwc_write_reg32( &global_regs->grstctl, greset.d32 );
+        
+        do {
+                greset.d32 = dwc_read_reg32( &global_regs->grstctl);
+                if (++count > 10000){
+                        DWC_WARN("%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n",
+                                  __func__, greset.d32,
+                                  dwc_read_reg32( &global_regs->gnptxsts));
+                        break;
+                }
+
+               udelay(1);
+        } while (greset.b.txfflsh == 1);
+        /* Wait for 3 PHY Clocks*/
+        UDELAY(1);
+}
+
+/**
+ * Flush Rx FIFO.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+extern void dwc_otg_flush_rx_fifo( dwc_otg_core_if_t *_core_if ) 
+{
+        dwc_otg_core_global_regs_t *global_regs = _core_if->core_global_regs;
+        volatile grstctl_t greset = { .d32 = 0};
+        int count = 0;
+        
+        DWC_DEBUGPL((DBG_CIL|DBG_PCDV), "%s\n", __func__);
+        /*
+         * 
+         */
+        greset.b.rxfflsh = 1;
+        dwc_write_reg32( &global_regs->grstctl, greset.d32 );
+        
+        do {
+                greset.d32 = dwc_read_reg32( &global_regs->grstctl);
+                if (++count > 10000){
+                        DWC_WARN("%s() HANG! GRSTCTL=%0x\n", __func__, 
+                                 greset.d32);
+                        break;
+                }
+        } while (greset.b.rxfflsh == 1);        
+        /* Wait for 3 PHY Clocks*/
+        UDELAY(1);
+}
+
+/**
+ * Do core a soft reset of the core.  Be careful with this because it
+ * resets all the internal state machines of the core.
+ */
+
+void dwc_otg_core_reset(dwc_otg_core_if_t *_core_if)
+{
+       dwc_otg_core_global_regs_t *global_regs = _core_if->core_global_regs;
+       volatile grstctl_t greset = { .d32 = 0};
+       int count = 0;
+
+       DWC_DEBUGPL(DBG_CILV, "%s\n", __func__);
+       /* Wait for AHB master IDLE state. */
+       do {
+               UDELAY(10);
+               greset.d32 = dwc_read_reg32( &global_regs->grstctl);
+               if (++count > 100000){
+                       DWC_WARN("%s() HANG! AHB Idle GRSTCTL=%0x %x\n", __func__, 
+                       greset.d32, greset.b.ahbidle);
+                       return;
+               }
+       } while (greset.b.ahbidle == 0);
+        
+// winder add.
+#if 1
+       /* Note: Actually, I don't exactly why we need to put delay here. */
+       MDELAY(100);
+#endif
+       /* Core Soft Reset */
+       count = 0;
+       greset.b.csftrst = 1;
+       dwc_write_reg32( &global_regs->grstctl, greset.d32 );
+// winder add.
+#if 1
+       /* Note: Actually, I don't exactly why we need to put delay here. */
+       MDELAY(100);
+#endif
+       do {
+               greset.d32 = dwc_read_reg32( &global_regs->grstctl);
+               if (++count > 10000){
+                       DWC_WARN("%s() HANG! Soft Reset GRSTCTL=%0x\n", __func__, 
+                               greset.d32);
+                       break;
+               }
+               udelay(1);
+       } while (greset.b.csftrst == 1);        
+       /* Wait for 3 PHY Clocks*/
+       //DWC_PRINT("100ms\n");
+       MDELAY(100);
+}
+
+
+
+/**
+ * Register HCD callbacks.  The callbacks are used to start and stop
+ * the HCD for interrupt processing.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _cb the HCD callback structure.
+ * @param _p pointer to be passed to callback function (usb_hcd*).
+ */
+extern void dwc_otg_cil_register_hcd_callbacks( dwc_otg_core_if_t *_core_if,
+                                                dwc_otg_cil_callbacks_t *_cb,
+                                                void *_p)
+{
+        _core_if->hcd_cb = _cb;        
+        _cb->p = _p;        
+}
+
+/**
+ * Register PCD callbacks.  The callbacks are used to start and stop
+ * the PCD for interrupt processing.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ * @param _cb the PCD callback structure.
+ * @param _p pointer to be passed to callback function (pcd*).
+ */
+extern void dwc_otg_cil_register_pcd_callbacks( dwc_otg_core_if_t *_core_if,
+                                                dwc_otg_cil_callbacks_t *_cb,
+                                                void *_p)
+{
+        _core_if->pcd_cb = _cb;
+        _cb->p = _p;
+}
+
diff --git a/drivers/usb/dwc_otg/dwc_otg_cil.h b/drivers/usb/dwc_otg/dwc_otg_cil.h
new file mode 100644
index 0000000..bbb9516
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_cil.h
@@ -0,0 +1,911 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil.h $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 631780 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_CIL_H__)
+#define __DWC_CIL_H__
+
+#include "dwc_otg_plat.h"
+
+#include "dwc_otg_regs.h"
+#ifdef DEBUG
+#include "linux/timer.h"
+#endif
+
+/* the OTG capabilities. */
+#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0
+#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1
+#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
+/* the maximum speed of operation in host and device mode. */
+#define DWC_SPEED_PARAM_HIGH 0
+#define DWC_SPEED_PARAM_FULL 1
+/* the PHY clock rate in low power mode when connected to a
+ * Low Speed device in host mode. */
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
+/* the type of PHY interface to use. */
+#define DWC_PHY_TYPE_PARAM_FS 0
+#define DWC_PHY_TYPE_PARAM_UTMI 1
+#define DWC_PHY_TYPE_PARAM_ULPI 2
+/* whether to use the internal or external supply to 
+ * drive the vbus with a ULPI phy. */
+#define DWC_PHY_ULPI_INTERNAL_VBUS 0
+#define DWC_PHY_ULPI_EXTERNAL_VBUS 1
+/* EP type. */
+
+/**
+ * @file
+ * This file contains the interface to the Core Interface Layer.
+ */
+
+/**
+ * The <code>dwc_ep</code> structure represents the state of a single
+ * endpoint when acting in device mode. It contains the data items
+ * needed for an endpoint to be activated and transfer packets.
+ */
+typedef struct dwc_ep {
+        /** EP number used for register address lookup */
+        uint8_t  num;
+        /** EP direction 0 = OUT */
+        unsigned is_in : 1;           
+        /** EP active. */
+        unsigned active : 1;
+
+       /** Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic Tx FIFO
+               If dedicated Tx FIFOs are enabled for all IN Eps - Tx FIFO # FOR IN EPs*/
+        unsigned tx_fifo_num : 4;  
+        /** EP type: 0 - Control, 1 - ISOC,  2 - BULK,  3 - INTR */
+        unsigned type : 2;      
+#define DWC_OTG_EP_TYPE_CONTROL    0
+#define DWC_OTG_EP_TYPE_ISOC       1
+#define DWC_OTG_EP_TYPE_BULK       2
+#define DWC_OTG_EP_TYPE_INTR       3
+
+        /** DATA start PID for INTR and BULK EP */
+        unsigned data_pid_start : 1;  
+        /** Frame (even/odd) for ISOC EP */
+        unsigned even_odd_frame : 1;  
+        /** Max Packet bytes */
+        unsigned maxpacket : 11;
+
+        /** @name Transfer state */
+       /** @{ */
+
+       /**
+        * Pointer to the beginning of the transfer buffer -- do not modify
+        * during transfer.
+        */
+       
+       uint32_t dma_addr;
+
+       uint8_t *start_xfer_buff;
+        /** pointer to the transfer buffer */
+        uint8_t *xfer_buff;          
+        /** Number of bytes to transfer */
+        unsigned xfer_len : 19;       
+        /** Number of bytes transferred. */
+        unsigned xfer_count : 19;
+        /** Sent ZLP */
+        unsigned sent_zlp : 1;
+        /** Total len for control transfer */
+        unsigned total_len : 19;
+
+               /** stall clear flag */
+               unsigned stall_clear_flag : 1;
+
+       /** @} */
+} dwc_ep_t;
+
+/*
+ * Reasons for halting a host channel.
+ */
+typedef enum dwc_otg_halt_status {
+       DWC_OTG_HC_XFER_NO_HALT_STATUS,
+       DWC_OTG_HC_XFER_COMPLETE,
+       DWC_OTG_HC_XFER_URB_COMPLETE,
+       DWC_OTG_HC_XFER_ACK,
+       DWC_OTG_HC_XFER_NAK,
+       DWC_OTG_HC_XFER_NYET,
+       DWC_OTG_HC_XFER_STALL,
+       DWC_OTG_HC_XFER_XACT_ERR,
+       DWC_OTG_HC_XFER_FRAME_OVERRUN,
+       DWC_OTG_HC_XFER_BABBLE_ERR,
+       DWC_OTG_HC_XFER_DATA_TOGGLE_ERR,
+       DWC_OTG_HC_XFER_AHB_ERR,
+       DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE,
+       DWC_OTG_HC_XFER_URB_DEQUEUE
+} dwc_otg_halt_status_e;
+       
+/**
+ * Host channel descriptor. This structure represents the state of a single
+ * host channel when acting in host mode. It contains the data items needed to
+ * transfer packets to an endpoint via a host channel.
+ */
+typedef struct dwc_hc {
+       /** Host channel number used for register address lookup */
+       uint8_t  hc_num;
+
+       /** Device to access */
+       unsigned dev_addr : 7;
+
+       /** EP to access */
+       unsigned ep_num : 4;
+
+       /** EP direction. 0: OUT, 1: IN */
+       unsigned ep_is_in : 1;
+
+       /**
+        * EP speed.
+        * One of the following values:
+        *      - DWC_OTG_EP_SPEED_LOW
+        *      - DWC_OTG_EP_SPEED_FULL
+        *      - DWC_OTG_EP_SPEED_HIGH
+        */
+       unsigned speed : 2;
+#define DWC_OTG_EP_SPEED_LOW   0
+#define DWC_OTG_EP_SPEED_FULL  1
+#define DWC_OTG_EP_SPEED_HIGH  2       
+
+       /**
+        * Endpoint type.
+        * One of the following values:
+        *      - DWC_OTG_EP_TYPE_CONTROL: 0
+        *      - DWC_OTG_EP_TYPE_ISOC: 1
+        *      - DWC_OTG_EP_TYPE_BULK: 2
+        *      - DWC_OTG_EP_TYPE_INTR: 3
+        */
+       unsigned ep_type : 2;
+
+       /** Max packet size in bytes */
+       unsigned max_packet : 11;
+
+       /**
+        * PID for initial transaction.
+        * 0: DATA0,<br>
+        * 1: DATA2,<br>
+        * 2: DATA1,<br>
+        * 3: MDATA (non-Control EP),
+        *    SETUP (Control EP)
+        */
+       unsigned data_pid_start : 2;
+#define DWC_OTG_HC_PID_DATA0 0
+#define DWC_OTG_HC_PID_DATA2 1
+#define DWC_OTG_HC_PID_DATA1 2
+#define DWC_OTG_HC_PID_MDATA 3
+#define DWC_OTG_HC_PID_SETUP 3
+
+       /** Number of periodic transactions per (micro)frame */
+       unsigned multi_count: 2;
+
+       /** @name Transfer State */
+       /** @{ */
+
+       /** Pointer to the current transfer buffer position. */
+       uint8_t *xfer_buff;
+       /** Total number of bytes to transfer. */
+       uint32_t xfer_len;
+       /** Number of bytes transferred so far. */
+       uint32_t xfer_count;
+       /** Packet count at start of transfer.*/
+       uint16_t start_pkt_count;
+
+       /**
+        * Flag to indicate whether the transfer has been started. Set to 1 if
+        * it has been started, 0 otherwise.
+        */
+       uint8_t xfer_started;
+
+       /**
+        * Set to 1 to indicate that a PING request should be issued on this
+        * channel. If 0, process normally.
+        */
+       uint8_t do_ping;
+
+       /**
+        * Set to 1 to indicate that the error count for this transaction is
+        * non-zero. Set to 0 if the error count is 0.
+        */
+       uint8_t error_state;
+
+       /**
+        * Set to 1 to indicate that this channel should be halted the next
+        * time a request is queued for the channel. This is necessary in
+        * slave mode if no request queue space is available when an attempt
+        * is made to halt the channel.
+        */
+       uint8_t halt_on_queue;
+
+       /**
+        * Set to 1 if the host channel has been halted, but the core is not
+        * finished flushing queued requests. Otherwise 0.
+        */
+       uint8_t halt_pending;
+
+       /**
+        * Reason for halting the host channel.
+        */
+       dwc_otg_halt_status_e   halt_status;
+
+       /*
+        * Split settings for the host channel
+        */
+       uint8_t do_split;          /**< Enable split for the channel */
+       uint8_t complete_split;    /**< Enable complete split */
+       uint8_t hub_addr;          /**< Address of high speed hub */
+
+       uint8_t port_addr;         /**< Port of the low/full speed device */
+       /** Split transaction position 
+        * One of the following values:
+        *    - DWC_HCSPLIT_XACTPOS_MID 
+        *    - DWC_HCSPLIT_XACTPOS_BEGIN
+        *    - DWC_HCSPLIT_XACTPOS_END
+        *    - DWC_HCSPLIT_XACTPOS_ALL */
+       uint8_t xact_pos;
+
+       /** Set when the host channel does a short read. */
+       uint8_t short_read;
+
+       /**
+        * Number of requests issued for this channel since it was assigned to
+        * the current transfer (not counting PINGs).
+        */
+       uint8_t requests;
+
+       /**
+        * Queue Head for the transfer being processed by this channel.
+        */
+       struct dwc_otg_qh *qh;
+
+       /** @} */
+
+       /** Entry in list of host channels. */
+       struct list_head        hc_list_entry;
+} dwc_hc_t;
+
+/**
+ * The following parameters may be specified when starting the module. These
+ * parameters define how the DWC_otg controller should be configured.
+ * Parameter values are passed to the CIL initialization function
+ * dwc_otg_cil_init.
+ */
+
+typedef struct dwc_otg_core_params 
+{
+       int32_t opt;
+//#define dwc_param_opt_default 1
+        /**
+        * Specifies the OTG capabilities. The driver will automatically
+        * detect the value for this parameter if none is specified.
+         * 0 - HNP and SRP capable (default)
+         * 1 - SRP Only capable
+         * 2 - No HNP/SRP capable
+         */
+        int32_t otg_cap;
+#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0
+#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1
+#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
+//#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE
+       /**
+         * Specifies whether to use slave or DMA mode for accessing the data
+         * FIFOs. The driver will automatically detect the value for this
+         * parameter if none is specified.
+         * 0 - Slave
+         * 1 - DMA (default, if available)
+         */
+       int32_t dma_enable;
+//#define dwc_param_dma_enable_default 1
+       /** The DMA Burst size (applicable only for External DMA
+         * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+         */
+        int32_t dma_burst_size;  /* Translate this to GAHBCFG values */
+//#define dwc_param_dma_burst_size_default 32
+       /**
+        * Specifies the maximum speed of operation in host and device mode.
+        * The actual speed depends on the speed of the attached device and
+        * the value of phy_type. The actual speed depends on the speed of the
+        * attached device.
+        * 0 - High Speed (default)
+        * 1 - Full Speed
+        */
+        int32_t speed;
+//#define dwc_param_speed_default 0
+#define DWC_SPEED_PARAM_HIGH 0
+#define DWC_SPEED_PARAM_FULL 1
+
+       /** Specifies whether low power mode is supported when attached 
+        *  to a Full Speed or Low Speed device in host mode.
+        * 0 - Don't support low power mode (default)
+        * 1 - Support low power mode
+        */
+       int32_t host_support_fs_ls_low_power;
+//#define dwc_param_host_support_fs_ls_low_power_default 0
+       /** Specifies the PHY clock rate in low power mode when connected to a
+        * Low Speed device in host mode. This parameter is applicable only if
+        * HOST_SUPPORT_FS_LS_LOW_POWER is enabled.  If PHY_TYPE is set to FS
+        * then defaults to 6 MHZ otherwise 48 MHZ.
+        *
+        * 0 - 48 MHz
+        * 1 - 6 MHz
+        */
+       int32_t host_ls_low_power_phy_clk;
+//#define dwc_param_host_ls_low_power_phy_clk_default 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
+       /**
+        * 0 - Use cC FIFO size parameters
+        * 1 - Allow dynamic FIFO sizing (default)
+        */
+       int32_t enable_dynamic_fifo;
+//#define dwc_param_enable_dynamic_fifo_default 1
+       /** Total number of 4-byte words in the data FIFO memory. This 
+        * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic 
+        * Tx FIFOs.
+        * 32 to 32768 (default 8192)
+        * Note: The total FIFO memory depth in the FPGA configuration is 8192.
+        */
+       int32_t data_fifo_size;
+//#define dwc_param_data_fifo_size_default 8192
+       /** Number of 4-byte words in the Rx FIFO in device mode when dynamic 
+        * FIFO sizing is enabled.
+        * 16 to 32768 (default 1064)
+        */
+       int32_t dev_rx_fifo_size;
+//#define dwc_param_dev_rx_fifo_size_default 1064
+       /** Number of 4-byte words in the non-periodic Tx FIFO in device mode 
+        * when dynamic FIFO sizing is enabled.
+        * 16 to 32768 (default 1024)
+        */
+       int32_t dev_nperio_tx_fifo_size;
+//#define dwc_param_dev_nperio_tx_fifo_size_default 1024
+       /** Number of 4-byte words in each of the periodic Tx FIFOs in device
+        * mode when dynamic FIFO sizing is enabled.
+        * 4 to 768 (default 256)
+        */
+       uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
+//#define dwc_param_dev_perio_tx_fifo_size_default 256
+       /** Number of 4-byte words in the Rx FIFO in host mode when dynamic 
+        * FIFO sizing is enabled.
+        * 16 to 32768 (default 1024)  
+        */
+       int32_t host_rx_fifo_size;
+//#define dwc_param_host_rx_fifo_size_default 1024
+        /** Number of 4-byte words in the non-periodic Tx FIFO in host mode 
+        * when Dynamic FIFO sizing is enabled in the core. 
+        * 16 to 32768 (default 1024)
+        */
+       int32_t host_nperio_tx_fifo_size;
+//#define dwc_param_host_nperio_tx_fifo_size_default 1024
+       /** Number of 4-byte words in the host periodic Tx FIFO when dynamic 
+        * FIFO sizing is enabled. 
+        * 16 to 32768 (default 1024)
+        */
+       int32_t host_perio_tx_fifo_size;
+//#define dwc_param_host_perio_tx_fifo_size_default 1024
+       /** The maximum transfer size supported in bytes.  
+        * 2047 to 65,535  (default 65,535)
+        */
+       int32_t max_transfer_size;
+//#define dwc_param_max_transfer_size_default 65535
+       /** The maximum number of packets in a transfer.  
+        * 15 to 511  (default 511)
+        */
+       int32_t max_packet_count;
+//#define dwc_param_max_packet_count_default 511
+       /** The number of host channel registers to use.  
+        * 1 to 16 (default 12) 
+        * Note: The FPGA configuration supports a maximum of 12 host channels.
+        */
+       int32_t host_channels;
+//#define dwc_param_host_channels_default 12
+       /** The number of endpoints in addition to EP0 available for device 
+        * mode operations. 
+        * 1 to 15 (default 6 IN and OUT) 
+        * Note: The FPGA configuration supports a maximum of 6 IN and OUT 
+        * endpoints in addition to EP0.
+        */
+       int32_t dev_endpoints;
+//#define dwc_param_dev_endpoints_default 6
+        /** 
+         * Specifies the type of PHY interface to use. By default, the driver
+         * will automatically detect the phy_type.
+         * 
+         * 0 - Full Speed PHY
+         * 1 - UTMI+ (default)
+         * 2 - ULPI
+         */
+       int32_t phy_type; 
+#define DWC_PHY_TYPE_PARAM_FS 0
+#define DWC_PHY_TYPE_PARAM_UTMI 1
+#define DWC_PHY_TYPE_PARAM_ULPI 2
+//#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI
+       /**
+         * Specifies the UTMI+ Data Width.  This parameter is
+         * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
+         * PHY_TYPE, this parameter indicates the data width between
+         * the MAC and the ULPI Wrapper.) Also, this parameter is
+         * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
+         * to "8 and 16 bits", meaning that the core has been
+         * configured to work at either data path width. 
+         *
+         * 8 or 16 bits (default 16)
+         */
+        int32_t phy_utmi_width;
+//#define dwc_param_phy_utmi_width_default 16
+        /**
+         * Specifies whether the ULPI operates at double or single
+         * data rate. This parameter is only applicable if PHY_TYPE is
+         * ULPI.
+         * 
+         * 0 - single data rate ULPI interface with 8 bit wide data
+         * bus (default)
+         * 1 - double data rate ULPI interface with 4 bit wide data
+         * bus
+         */
+        int32_t phy_ulpi_ddr;
+//#define dwc_param_phy_ulpi_ddr_default 0
+       /**
+        * Specifies whether to use the internal or external supply to 
+        * drive the vbus with a ULPI phy.
+        */
+       int32_t phy_ulpi_ext_vbus;
+#define DWC_PHY_ULPI_INTERNAL_VBUS 0
+#define DWC_PHY_ULPI_EXTERNAL_VBUS 1
+//#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS
+        /**
+        * Specifies whether to use the I2Cinterface for full speed PHY. This
+        * parameter is only applicable if PHY_TYPE is FS.
+         * 0 - No (default)
+         * 1 - Yes
+         */
+        int32_t i2c_enable;
+//#define dwc_param_i2c_enable_default 0
+
+        int32_t ulpi_fs_ls;
+//#define dwc_param_ulpi_fs_ls_default 0
+
+       int32_t ts_dline;
+//#define dwc_param_ts_dline_default 0
+
+       /**
+        * Specifies whether dedicated transmit FIFOs are
+        * enabled for non periodic IN endpoints in device mode
+        * 0 - No
+        * 1 - Yes
+        */
+        int32_t en_multiple_tx_fifo;
+#define dwc_param_en_multiple_tx_fifo_default 1
+
+       /** Number of 4-byte words in each of the Tx FIFOs in device
+        * mode when dynamic FIFO sizing is enabled.
+        * 4 to 768 (default 256)
+        */
+       uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
+#define dwc_param_dev_tx_fifo_size_default 256
+
+       /** Thresholding enable flag-
+        * bit 0 - enable non-ISO Tx thresholding
+        * bit 1 - enable ISO Tx thresholding
+        * bit 2 - enable Rx thresholding
+        */
+       uint32_t thr_ctl;
+#define dwc_param_thr_ctl_default 0
+
+       /** Thresholding length for Tx
+        *      FIFOs in 32 bit DWORDs
+        */
+       uint32_t tx_thr_length;
+#define dwc_param_tx_thr_length_default 64
+
+       /** Thresholding length for Rx
+        *      FIFOs in 32 bit DWORDs
+        */
+       uint32_t rx_thr_length;
+#define dwc_param_rx_thr_length_default 64
+} dwc_otg_core_params_t;
+
+#ifdef DEBUG
+struct dwc_otg_core_if;
+typedef        struct hc_xfer_info
+{
+       struct dwc_otg_core_if  *core_if;
+       dwc_hc_t                *hc;
+} hc_xfer_info_t;
+#endif
+
+/**
+ * The <code>dwc_otg_core_if</code> structure contains information needed to manage
+ * the DWC_otg controller acting in either host or device mode. It
+ * represents the programming view of the controller as a whole.
+ */
+typedef struct dwc_otg_core_if 
+{
+    /** Parameters that define how the core should be configured.*/
+    dwc_otg_core_params_t      *core_params;
+
+    /** Core Global registers starting at offset 000h. */
+    dwc_otg_core_global_regs_t *core_global_regs;
+
+    /** Device-specific information */
+    dwc_otg_dev_if_t           *dev_if;
+    /** Host-specific information */
+    dwc_otg_host_if_t          *host_if;
+
+    /*
+     * Set to 1 if the core PHY interface bits in USBCFG have been
+     * initialized.
+     */
+    uint8_t phy_init_done;
+
+    /*
+     * SRP Success flag, set by srp success interrupt in FS I2C mode
+     */
+    uint8_t srp_success;
+    uint8_t srp_timer_started;
+
+    /* Common configuration information */
+    /** Power and Clock Gating Control Register */
+    volatile uint32_t *pcgcctl;
+#define DWC_OTG_PCGCCTL_OFFSET 0xE00
+
+    /** Push/pop addresses for endpoints or host channels.*/
+    uint32_t *data_fifo[MAX_EPS_CHANNELS];
+#define DWC_OTG_DATA_FIFO_OFFSET 0x1000
+#define DWC_OTG_DATA_FIFO_SIZE 0x1000
+
+    /** Total RAM for FIFOs (Bytes) */
+    uint16_t total_fifo_size;
+    /** Size of Rx FIFO (Bytes) */
+    uint16_t rx_fifo_size;
+    /** Size of Non-periodic Tx FIFO (Bytes) */
+    uint16_t nperio_tx_fifo_size;
+        
+    /** 1 if DMA is enabled, 0 otherwise. */
+    uint8_t    dma_enable;
+
+       /** 1 if dedicated Tx FIFOs are enabled, 0 otherwise. */
+       uint8_t en_multiple_tx_fifo;
+
+    /** Set to 1 if multiple packets of a high-bandwidth transfer is in
+     * process of being queued */
+    uint8_t queuing_high_bandwidth;
+
+    /** Hardware Configuration -- stored here for convenience.*/
+    hwcfg1_data_t hwcfg1;
+    hwcfg2_data_t hwcfg2;
+    hwcfg3_data_t hwcfg3;
+    hwcfg4_data_t hwcfg4;
+
+    /** The operational State, during transations
+     * (a_host>>a_peripherial and b_device=>b_host) this may not
+     * match the core but allows the software to determine
+     * transitions.
+     */
+    uint8_t op_state;
+        
+    /**
+     * Set to 1 if the HCD needs to be restarted on a session request
+     * interrupt. This is required if no connector ID status change has
+     * occurred since the HCD was last disconnected.
+     */
+    uint8_t restart_hcd_on_session_req;
+
+    /** HCD callbacks */
+    /** A-Device is a_host */
+#define A_HOST                 (1)
+    /** A-Device is a_suspend */
+#define A_SUSPEND      (2)
+    /** A-Device is a_peripherial */
+#define A_PERIPHERAL   (3)
+    /** B-Device is operating as a Peripheral. */
+#define B_PERIPHERAL   (4)
+    /** B-Device is operating as a Host. */
+#define B_HOST                 (5)        
+
+    /** HCD callbacks */
+    struct dwc_otg_cil_callbacks *hcd_cb;
+    /** PCD callbacks */
+    struct dwc_otg_cil_callbacks *pcd_cb;
+
+       /** Device mode Periodic Tx FIFO Mask */
+       uint32_t p_tx_msk;
+       /** Device mode Periodic Tx FIFO Mask */
+       uint32_t tx_msk;
+
+#ifdef DEBUG
+    uint32_t           start_hcchar_val[MAX_EPS_CHANNELS];
+
+    hc_xfer_info_t             hc_xfer_info[MAX_EPS_CHANNELS];
+    struct timer_list  hc_xfer_timer[MAX_EPS_CHANNELS];
+
+#if 1 // winder
+    uint32_t           hfnum_7_samples;
+    uint32_t           hfnum_7_frrem_accum;
+    uint32_t           hfnum_0_samples;
+    uint32_t           hfnum_0_frrem_accum;
+    uint32_t           hfnum_other_samples;
+    uint32_t           hfnum_other_frrem_accum;
+#else
+    uint32_t           hfnum_7_samples;
+    uint64_t           hfnum_7_frrem_accum;
+    uint32_t           hfnum_0_samples;
+    uint64_t           hfnum_0_frrem_accum;
+    uint32_t           hfnum_other_samples;
+    uint64_t           hfnum_other_frrem_accum;
+#endif
+       resource_size_t phys_addr;              /* Added to support PLB DMA : phys-virt mapping */
+#endif 
+
+} dwc_otg_core_if_t;
+
+/*
+ * The following functions support initialization of the CIL driver component
+ * and the DWC_otg controller.
+ */
+extern dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t *_reg_base_addr,
+                                           dwc_otg_core_params_t *_core_params);
+extern void dwc_otg_cil_remove(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_core_init(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_core_host_init(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_core_dev_init(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_enable_global_interrupts( dwc_otg_core_if_t *_core_if );
+extern void dwc_otg_disable_global_interrupts( dwc_otg_core_if_t *_core_if );
+
+/** @name Device CIL Functions
+ * The following functions support managing the DWC_otg controller in device
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_wakeup(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_read_setup_packet (dwc_otg_core_if_t *_core_if, uint32_t *_dest);
+extern uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_ep0_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_deactivate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_write_packet(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep, int _dma);
+extern void dwc_otg_ep_set_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_clear_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_dump_dev_registers(dwc_otg_core_if_t *_core_if);
+/**@}*/
+
+/** @name Host CIL Functions
+ * The following functions support managing the DWC_otg controller in host
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_hc_init(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_halt(dwc_otg_core_if_t *_core_if,
+                           dwc_hc_t *_hc,
+                           dwc_otg_halt_status_e _halt_status);
+extern void dwc_otg_hc_cleanup(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_start_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_do_ping(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_write_packet(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t *_core_if);
+
+/**
+ * This function Reads HPRT0 in preparation to modify.  It keeps the
+ * WC bits 0 so that if they are read as 1, they won't clear when you
+ * write it back 
+ */
+static inline uint32_t dwc_otg_read_hprt0(dwc_otg_core_if_t *_core_if) 
+{
+        hprt0_data_t hprt0;
+        hprt0.d32 = dwc_read_reg32(_core_if->host_if->hprt0);
+        hprt0.b.prtena = 0;
+        hprt0.b.prtconndet = 0;
+        hprt0.b.prtenchng = 0;
+        hprt0.b.prtovrcurrchng = 0;
+        return hprt0.d32;
+}
+
+extern void dwc_otg_dump_host_registers(dwc_otg_core_if_t *_core_if);
+/**@}*/
+
+/** @name Common CIL Functions
+ * The following functions support managing the DWC_otg controller in either
+ * device or host mode.
+ */
+/**@{*/
+
+extern void dwc_otg_read_packet(dwc_otg_core_if_t *core_if,
+                               uint8_t *dest, 
+                               uint16_t bytes);
+
+extern void dwc_otg_dump_global_registers(dwc_otg_core_if_t *_core_if);
+
+extern void dwc_otg_flush_tx_fifo( dwc_otg_core_if_t *_core_if, 
+                                   const int _num );
+extern void dwc_otg_flush_rx_fifo( dwc_otg_core_if_t *_core_if );
+extern void dwc_otg_core_reset( dwc_otg_core_if_t *_core_if );
+
+#define NP_TXFIFO_EMPTY -1
+#define MAX_NP_TXREQUEST_Q_SLOTS 8
+/**
+ * This function returns the endpoint number of the request at
+ * the top of non-periodic TX FIFO, or -1 if the request FIFO is
+ * empty.
+ */
+static inline int dwc_otg_top_nptxfifo_epnum(dwc_otg_core_if_t *_core_if) {
+       gnptxsts_data_t txstatus = {.d32 = 0};
+
+       txstatus.d32 = dwc_read_reg32(&_core_if->core_global_regs->gnptxsts);
+       return (txstatus.b.nptxqspcavail == MAX_NP_TXREQUEST_Q_SLOTS ?
+               -1 : txstatus.b.nptxqtop_chnep);
+}
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_core_intr(dwc_otg_core_if_t *_core_if) {
+       return (dwc_read_reg32(&_core_if->core_global_regs->gintsts) &
+                dwc_read_reg32(&_core_if->core_global_regs->gintmsk));
+}
+
+/**
+ * This function returns the OTG Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_otg_intr (dwc_otg_core_if_t *_core_if) {
+       return (dwc_read_reg32 (&_core_if->core_global_regs->gotgint));
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the IN endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_in_ep_intr(dwc_otg_core_if_t *_core_if) {
+        uint32_t v;
+        v = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daint) &
+                dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk);
+        return (v & 0xffff);
+        
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the OUT endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_out_ep_intr(dwc_otg_core_if_t *_core_if) {
+        uint32_t v;
+        v = dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daint) &
+                dwc_read_reg32(&_core_if->dev_if->dev_global_regs->daintmsk);
+        return ((v & 0xffff0000) >> 16);
+}
+
+/**
+ * This function returns the Device IN EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_in_ep_intr(dwc_otg_core_if_t *_core_if,
+                                                   dwc_ep_t *_ep)
+{
+        dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+       uint32_t v, msk, emp;
+       msk = dwc_read_reg32(&dev_if->dev_global_regs->diepmsk);
+       emp = dwc_read_reg32(&dev_if->dev_global_regs->dtknqr4_fifoemptymsk);
+       msk |= ((emp >> _ep->num) & 0x1) << 7;
+       v = dwc_read_reg32(&dev_if->in_ep_regs[_ep->num]->diepint) & msk;
+/*
+       dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+        uint32_t v;
+        v = dwc_read_reg32(&dev_if->in_ep_regs[_ep->num]->diepint) &
+                dwc_read_reg32(&dev_if->dev_global_regs->diepmsk);
+*/
+        return v;        
+}
+/**
+ * This function returns the Device OUT EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_out_ep_intr(dwc_otg_core_if_t *_core_if, 
+                                                    dwc_ep_t *_ep)
+{
+        dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+        uint32_t v;
+        v = dwc_read_reg32( &dev_if->out_ep_regs[_ep->num]->doepint) &
+                       dwc_read_reg32(&dev_if->dev_global_regs->doepmsk);
+        return v;        
+}
+
+/**
+ * This function returns the Host All Channel Interrupt register
+ */
+static inline uint32_t dwc_otg_read_host_all_channels_intr (dwc_otg_core_if_t *_core_if)
+{
+       return (dwc_read_reg32 (&_core_if->host_if->host_global_regs->haint));
+}
+
+static inline uint32_t dwc_otg_read_host_channel_intr (dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+       return (dwc_read_reg32 (&_core_if->host_if->hc_regs[_hc->hc_num]->hcint));
+}
+
+
+/**
+ * This function returns the mode of the operation, host or device.
+ *
+ * @return 0 - Device Mode, 1 - Host Mode 
+ */
+static inline uint32_t dwc_otg_mode(dwc_otg_core_if_t *_core_if) {
+        return (dwc_read_reg32( &_core_if->core_global_regs->gintsts ) & 0x1);
+}
+
+static inline uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t *_core_if) 
+{
+        return (dwc_otg_mode(_core_if) != DWC_HOST_MODE);
+}
+static inline uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t *_core_if) 
+{
+        return (dwc_otg_mode(_core_if) == DWC_HOST_MODE);
+}
+
+extern int32_t dwc_otg_handle_common_intr( dwc_otg_core_if_t *_core_if );
+
+
+/**@}*/
+
+/**
+ * DWC_otg CIL callback structure.  This structure allows the HCD and
+ * PCD to register functions used for starting and stopping the PCD
+ * and HCD for role change on for a DRD.
+ */
+typedef struct dwc_otg_cil_callbacks 
+{
+        /** Start function for role change */
+        int (*start) (void *_p);
+        /** Stop Function for role change */
+        int (*stop) (void *_p);
+        /** Disconnect Function for role change */
+        int (*disconnect) (void *_p);
+        /** Resume/Remote wakeup Function */
+        int (*resume_wakeup) (void *_p);
+        /** Suspend function */
+        int (*suspend) (void *_p);
+        /** Session Start (SRP) */
+        int (*session_start) (void *_p);
+        /** Pointer passed to start() and stop() */
+        void *p;
+} dwc_otg_cil_callbacks_t;
+
+
+
+extern void dwc_otg_cil_register_pcd_callbacks( dwc_otg_core_if_t *_core_if,
+                                                dwc_otg_cil_callbacks_t *_cb,
+                                                void *_p);
+extern void dwc_otg_cil_register_hcd_callbacks( dwc_otg_core_if_t *_core_if,
+                                                dwc_otg_cil_callbacks_t *_cb,
+                                                void *_p);
+
+
+#endif
diff --git a/drivers/usb/dwc_otg/dwc_otg_cil_ifx.h b/drivers/usb/dwc_otg/dwc_otg_cil_ifx.h
new file mode 100644
index 0000000..b0298ec
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_cil_ifx.h
@@ -0,0 +1,58 @@
+/******************************************************************************
+**
+** FILE NAME    : dwc_otg_cil_ifx.h
+** PROJECT      : Twinpass/Danube
+** MODULES      : DWC OTG USB
+**
+** DATE         : 07 Sep. 2007
+** AUTHOR       : Sung Winder
+** DESCRIPTION  : Default param value.
+** COPYRIGHT    :       Copyright (c) 2007
+**                      Infineon Technologies AG
+**                      2F, No.2, Li-Hsin Rd., Hsinchu Science Park,
+**                      Hsin-chu City, 300 Taiwan.
+**
+**    This program is free software; you can redistribute it and/or modify
+**    it under the terms of the GNU General Public License as published by
+**    the Free Software Foundation; either version 2 of the License, or
+**    (at your option) any later version.
+**
+** HISTORY
+** $Date          $Author         $Comment
+** 12 April 2007   Sung Winder     Initiate Version
+*******************************************************************************/
+#if !defined(__DWC_OTG_CIL_IFX_H__)
+#define __DWC_OTG_CIL_IFX_H__
+
+/* ================ Default param value ================== */
+#define dwc_param_opt_default 1
+#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE
+#define dwc_param_dma_enable_default 1
+#define dwc_param_dma_burst_size_default 32
+#define dwc_param_speed_default DWC_SPEED_PARAM_HIGH
+#define dwc_param_host_support_fs_ls_low_power_default 0
+#define dwc_param_host_ls_low_power_phy_clk_default DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ
+#define dwc_param_enable_dynamic_fifo_default 1
+#define dwc_param_data_fifo_size_default 2048
+#define dwc_param_dev_rx_fifo_size_default 1024
+#define dwc_param_dev_nperio_tx_fifo_size_default 1024
+#define dwc_param_dev_perio_tx_fifo_size_default 768
+#define dwc_param_host_rx_fifo_size_default 640
+#define dwc_param_host_nperio_tx_fifo_size_default 640
+#define dwc_param_host_perio_tx_fifo_size_default 768
+#define dwc_param_max_transfer_size_default 65535
+#define dwc_param_max_packet_count_default 511
+#define dwc_param_host_channels_default 16
+#define dwc_param_dev_endpoints_default 6
+#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI
+#define dwc_param_phy_utmi_width_default 16
+#define dwc_param_phy_ulpi_ddr_default 0
+#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS
+#define dwc_param_i2c_enable_default 0
+#define dwc_param_ulpi_fs_ls_default 0
+#define dwc_param_ts_dline_default 0
+
+/* ======================================================= */
+
+#endif // __DWC_OTG_CIL_IFX_H__
+
diff --git a/drivers/usb/dwc_otg/dwc_otg_cil_intr.c b/drivers/usb/dwc_otg/dwc_otg_cil_intr.c
new file mode 100644
index 0000000..d469ab4
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_cil_intr.c
@@ -0,0 +1,708 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_cil_intr.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 553126 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file 
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * This file contains the Common Interrupt handlers.
+ */
+#include "dwc_otg_plat.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+
+#ifdef DEBUG
+inline const char *op_state_str( dwc_otg_core_if_t *_core_if ) 
+{
+        return (_core_if->op_state==A_HOST?"a_host":
+                (_core_if->op_state==A_SUSPEND?"a_suspend":
+                 (_core_if->op_state==A_PERIPHERAL?"a_peripheral":
+                  (_core_if->op_state==B_PERIPHERAL?"b_peripheral":
+                   (_core_if->op_state==B_HOST?"b_host":
+                    "unknown")))));
+}
+#endif
+
+/** This function will log a debug message 
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_mode_mismatch_intr (dwc_otg_core_if_t *_core_if)
+{
+       gintsts_data_t gintsts;
+       DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n", 
+                dwc_otg_mode(_core_if) ? "Host" : "Device");
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.modemismatch = 1;     
+       dwc_write_reg32 (&_core_if->core_global_regs->gintsts, gintsts.d32);
+       return 1;
+}
+
+/** Start the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_start( dwc_otg_core_if_t *_core_if ) 
+{        
+        if (_core_if->hcd_cb && _core_if->hcd_cb->start) {
+                _core_if->hcd_cb->start( _core_if->hcd_cb->p );
+        }
+}
+/** Stop the HCD.  Helper function for using the HCD callbacks. 
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_stop( dwc_otg_core_if_t *_core_if ) 
+{        
+        if (_core_if->hcd_cb && _core_if->hcd_cb->stop) {
+                _core_if->hcd_cb->stop( _core_if->hcd_cb->p );
+        }
+}
+/** Disconnect the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_disconnect( dwc_otg_core_if_t *_core_if ) 
+{
+        if (_core_if->hcd_cb && _core_if->hcd_cb->disconnect) {
+                _core_if->hcd_cb->disconnect( _core_if->hcd_cb->p );
+        }
+}
+/** Inform the HCD the a New Session has begun.  Helper function for
+ * using the HCD callbacks.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_session_start( dwc_otg_core_if_t *_core_if ) 
+{
+        if (_core_if->hcd_cb && _core_if->hcd_cb->session_start) {
+                _core_if->hcd_cb->session_start( _core_if->hcd_cb->p );
+        }
+}
+
+/** Start the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_start( dwc_otg_core_if_t *_core_if ) 
+{
+        if (_core_if->pcd_cb && _core_if->pcd_cb->start ) {
+                _core_if->pcd_cb->start( _core_if->pcd_cb->p );
+        }
+}
+/** Stop the PCD.  Helper function for using the PCD callbacks. 
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_stop( dwc_otg_core_if_t *_core_if ) 
+{
+        if (_core_if->pcd_cb && _core_if->pcd_cb->stop ) {
+                _core_if->pcd_cb->stop( _core_if->pcd_cb->p );
+        }
+}
+/** Suspend the PCD.  Helper function for using the PCD callbacks. 
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_suspend( dwc_otg_core_if_t *_core_if ) 
+{
+        if (_core_if->pcd_cb && _core_if->pcd_cb->suspend ) {
+                _core_if->pcd_cb->suspend( _core_if->pcd_cb->p );
+        }
+}
+/** Resume the PCD.  Helper function for using the PCD callbacks. 
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_resume( dwc_otg_core_if_t *_core_if ) 
+{
+        if (_core_if->pcd_cb && _core_if->pcd_cb->resume_wakeup ) {
+                _core_if->pcd_cb->resume_wakeup( _core_if->pcd_cb->p );
+        }
+}
+
+/**
+ * This function handles the OTG Interrupts. It reads the OTG
+ * Interrupt Register (GOTGINT) to determine what interrupt has
+ * occurred.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t *_core_if)
+{
+        dwc_otg_core_global_regs_t *global_regs = 
+                _core_if->core_global_regs;
+       gotgint_data_t gotgint;
+        gotgctl_data_t gotgctl;
+       gintmsk_data_t gintmsk;
+
+       gotgint.d32 = dwc_read_reg32( &global_regs->gotgint);
+        gotgctl.d32 = dwc_read_reg32( &global_regs->gotgctl);
+       DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32,
+                    op_state_str(_core_if));
+        //DWC_DEBUGPL(DBG_CIL, "gotgctl=%08x\n", gotgctl.d32 );
+
+       if (gotgint.b.sesenddet) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Session End Detected++ (%s)\n",
+                            op_state_str(_core_if));
+                gotgctl.d32 = dwc_read_reg32( &global_regs->gotgctl);
+
+                if (_core_if->op_state == B_HOST) {
+                        pcd_start( _core_if );
+                        _core_if->op_state = B_PERIPHERAL;
+                } else {
+                        /* If not B_HOST and Device HNP still set. HNP
+                         * Did not succeed!*/
+                        if (gotgctl.b.devhnpen) {
+                                DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
+                                DWC_ERROR( "Device Not Connected/Responding!\n" );
+                        }
+
+                        /* If Session End Detected the B-Cable has
+                         * been disconnected. */
+                        /* Reset PCD and Gadget driver to a
+                         * clean state. */
+                        pcd_stop(_core_if);
+                }
+                gotgctl.d32 = 0;
+                gotgctl.b.devhnpen = 1;
+                dwc_modify_reg32( &global_regs->gotgctl, 
+                                  gotgctl.d32, 0);
+        }
+       if (gotgint.b.sesreqsucstschng) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Session Reqeust Success Status Change++\n");
+                gotgctl.d32 = dwc_read_reg32( &global_regs->gotgctl);
+                if (gotgctl.b.sesreqscs) {
+                       if ((_core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) && 
+                           (_core_if->core_params->i2c_enable)) {
+                               _core_if->srp_success = 1;
+                       }
+                       else {
+                               pcd_resume( _core_if );
+                               /* Clear Session Request */
+                               gotgctl.d32 = 0;
+                               gotgctl.b.sesreq = 1;
+                               dwc_modify_reg32( &global_regs->gotgctl, 
+                                                 gotgctl.d32, 0);
+                       }
+                }
+       }
+       if (gotgint.b.hstnegsucstschng) {
+                /* Print statements during the HNP interrupt handling
+                 * can cause it to fail.*/
+                gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
+                if (gotgctl.b.hstnegscs) {
+                        if (dwc_otg_is_host_mode(_core_if) ) {
+                                _core_if->op_state = B_HOST;
+                               /*
+                                * Need to disable SOF interrupt immediately.
+                                * When switching from device to host, the PCD
+                                * interrupt handler won't handle the
+                                * interrupt if host mode is already set. The
+                                * HCD interrupt handler won't get called if
+                                * the HCD state is HALT. This means that the
+                                * interrupt does not get handled and Linux
+                                * complains loudly.
+                                */
+                               gintmsk.d32 = 0;
+                               gintmsk.b.sofintr = 1;
+                               dwc_modify_reg32(&global_regs->gintmsk,
+                                                gintmsk.d32, 0);
+                                pcd_stop(_core_if);
+                                /*
+                                 * Initialize the Core for Host mode.
+                                 */
+                                hcd_start( _core_if );
+                                _core_if->op_state = B_HOST;
+                        }
+                } else {
+                        gotgctl.d32 = 0;
+                        gotgctl.b.hnpreq = 1;
+                        gotgctl.b.devhnpen = 1;
+                        dwc_modify_reg32( &global_regs->gotgctl, 
+                                          gotgctl.d32, 0);
+                        DWC_DEBUGPL( DBG_ANY, "HNP Failed\n");
+                        DWC_ERROR( "Device Not Connected/Responding\n" );
+                }
+       }
+       if (gotgint.b.hstnegdet) {
+                /* The disconnect interrupt is set at the same time as
+                * Host Negotiation Detected.  During the mode
+                * switch all interrupts are cleared so the disconnect
+                * interrupt handler will not get executed.
+                 */
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Host Negotiation Detected++ (%s)\n", 
+                            (dwc_otg_is_host_mode(_core_if)?"Host":"Device"));
+                if (dwc_otg_is_device_mode(_core_if)){
+                        DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n",_core_if->op_state);
+                        hcd_disconnect( _core_if );
+                        pcd_start( _core_if );
+                        _core_if->op_state = A_PERIPHERAL;
+                } else {
+                       /*
+                        * Need to disable SOF interrupt immediately. When
+                        * switching from device to host, the PCD interrupt
+                        * handler won't handle the interrupt if host mode is
+                        * already set. The HCD interrupt handler won't get
+                        * called if the HCD state is HALT. This means that
+                        * the interrupt does not get handled and Linux
+                        * complains loudly.
+                        */
+                       gintmsk.d32 = 0;
+                       gintmsk.b.sofintr = 1;
+                       dwc_modify_reg32(&global_regs->gintmsk,
+                                        gintmsk.d32, 0);
+                        pcd_stop( _core_if );
+                        hcd_start( _core_if );
+                        _core_if->op_state = A_HOST;
+                }
+       }
+       if (gotgint.b.adevtoutchng) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "A-Device Timeout Change++\n");
+       }
+       if (gotgint.b.debdone) {
+               DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+                           "Debounce Done++\n");
+       }
+
+       /* Clear GOTGINT */
+       dwc_write_reg32 (&_core_if->core_global_regs->gotgint, gotgint.d32);
+
+       return 1;
+}
+
+/**
+ * This function handles the Connector ID Status Change Interrupt.  It
+ * reads the OTG Interrupt Register (GOTCTL) to determine whether this
+ * is a Device to Host Mode transition or a Host Mode to Device
+ * Transition.  
+ *
+ * This only occurs when the cable is connected/removed from the PHY
+ * connector.
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t *_core_if)
+{
+        uint32_t count = 0;
+        
+       gintsts_data_t gintsts = { .d32 = 0 };
+       gintmsk_data_t gintmsk = { .d32 = 0 };
+        gotgctl_data_t gotgctl = { .d32 = 0 }; 
+
+       /*
+        * Need to disable SOF interrupt immediately. If switching from device
+        * to host, the PCD interrupt handler won't handle the interrupt if
+        * host mode is already set. The HCD interrupt handler won't get
+        * called if the HCD state is HALT. This means that the interrupt does
+        * not get handled and Linux complains loudly.
+        */
+       gintmsk.b.sofintr = 1;
+       dwc_modify_reg32(&_core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+
+       DWC_DEBUGPL(DBG_CIL, " ++Connector ID Status Change Interrupt++  (%s)\n",
+                    (dwc_otg_is_host_mode(_core_if)?"Host":"Device"));
+        gotgctl.d32 = dwc_read_reg32(&_core_if->core_global_regs->gotgctl);
+       DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
+       DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
+        
+        /* B-Device connector (Device Mode) */
+        if (gotgctl.b.conidsts) {
+                /* Wait for switch to device mode. */
+                while (!dwc_otg_is_device_mode(_core_if) ){
+                        DWC_PRINT("Waiting for Peripheral Mode, Mode=%s\n",
+                                  (dwc_otg_is_host_mode(_core_if)?"Host":"Peripheral"));
+                        MDELAY(100);
+                        if (++count > 10000) *(uint32_t*)NULL=0;
+                }
+                _core_if->op_state = B_PERIPHERAL;
+               dwc_otg_core_init(_core_if);
+               dwc_otg_enable_global_interrupts(_core_if);
+                pcd_start( _core_if );
+        } else {
+                /* A-Device connector (Host Mode) */
+                while (!dwc_otg_is_host_mode(_core_if) ) {
+                        DWC_PRINT("Waiting for Host Mode, Mode=%s\n",
+                                  (dwc_otg_is_host_mode(_core_if)?"Host":"Peripheral"));
+                        MDELAY(100);
+                        if (++count > 10000) *(uint32_t*)NULL=0;
+                }
+                _core_if->op_state = A_HOST;
+                /*
+                 * Initialize the Core for Host mode.
+                 */
+               dwc_otg_core_init(_core_if);
+               dwc_otg_enable_global_interrupts(_core_if);
+                hcd_start( _core_if );
+        }
+
+       /* Set flag and clear interrupt */
+       gintsts.b.conidstschng = 1;
+       dwc_write_reg32 (&_core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/** 
+ * This interrupt indicates that a device is initiating the Session
+ * Request Protocol to request the host to turn on bus power so a new
+ * session can begin. The handler responds by turning on bus power. If
+ * the DWC_otg controller is in low power mode, the handler brings the
+ * controller out of low power mode before turning on bus power. 
+ *
+ * @param _core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_session_req_intr( dwc_otg_core_if_t *_core_if )
+{
+#ifndef DWC_HOST_ONLY // winder
+    hprt0_data_t hprt0;
+#endif
+    gintsts_data_t gintsts;
+
+#ifndef DWC_HOST_ONLY
+    DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");   
+
+    if (dwc_otg_is_device_mode(_core_if) ) {
+        DWC_PRINT("SRP: Device mode\n");
+    } else {
+        DWC_PRINT("SRP: Host mode\n");
+
+        /* Turn on the port power bit. */
+        hprt0.d32 = dwc_otg_read_hprt0( _core_if );
+        hprt0.b.prtpwr = 1;
+        dwc_write_reg32(_core_if->host_if->hprt0, hprt0.d32);
+
+        /* Start the Connection timer. So a message can be displayed
+        * if connect does not occur within 10 seconds. */ 
+        hcd_session_start( _core_if );
+    }
+#endif
+
+    /* Clear interrupt */
+    gintsts.d32 = 0;
+    gintsts.b.sessreqintr = 1;
+    dwc_write_reg32 (&_core_if->core_global_regs->gintsts, gintsts.d32);
+
+    return 1;
+}
+
+/** 
+ * This interrupt indicates that the DWC_otg controller has detected a
+ * resume or remote wakeup sequence. If the DWC_otg controller is in
+ * low power mode, the handler must brings the controller out of low
+ * power mode. The controller automatically begins resume
+ * signaling. The handler schedules a time to stop resume signaling.
+ */
+int32_t dwc_otg_handle_wakeup_detected_intr( dwc_otg_core_if_t *_core_if )
+{
+       gintsts_data_t gintsts;
+
+       DWC_DEBUGPL(DBG_ANY, "++Resume and Remote Wakeup Detected Interrupt++\n");
+
+        if (dwc_otg_is_device_mode(_core_if) ) { 
+                dctl_data_t dctl = {.d32=0};
+                DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", 
+                            dwc_read_reg32( &_core_if->dev_if->dev_global_regs->dsts));
+#ifdef PARTIAL_POWER_DOWN
+                if (_core_if->hwcfg4.b.power_optimiz) {
+                        pcgcctl_data_t power = {.d32=0};
+
+                        power.d32 = dwc_read_reg32( _core_if->pcgcctl );
+                        DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n", power.d32);
+
+                        power.b.stoppclk = 0;
+                        dwc_write_reg32( _core_if->pcgcctl, power.d32);
+
+                        power.b.pwrclmp = 0;
+                        dwc_write_reg32( _core_if->pcgcctl, power.d32);
+
+                        power.b.rstpdwnmodule = 0;
+                        dwc_write_reg32( _core_if->pcgcctl, power.d32);
+                }
+#endif
+                /* Clear the Remote Wakeup Signalling */
+                dctl.b.rmtwkupsig = 1;
+                dwc_modify_reg32( &_core_if->dev_if->dev_global_regs->dctl, 
+                                  dctl.d32, 0 );
+
+                if (_core_if->pcd_cb && _core_if->pcd_cb->resume_wakeup) {
+                        _core_if->pcd_cb->resume_wakeup( _core_if->pcd_cb->p );
+                }
+        
+        } else {
+                /*
+                * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
+                * so that OPT tests pass with all PHYs).
+                */
+                hprt0_data_t hprt0 = {.d32=0};
+                pcgcctl_data_t pcgcctl = {.d32=0};
+                /* Restart the Phy Clock */
+                pcgcctl.b.stoppclk = 1;
+                dwc_modify_reg32(_core_if->pcgcctl, pcgcctl.d32, 0);
+                UDELAY(10);
+                
+                /* Now wait for 70 ms. */
+                hprt0.d32 = dwc_otg_read_hprt0( _core_if );
+                DWC_DEBUGPL(DBG_ANY,"Resume: HPRT0=%0x\n", hprt0.d32);
+                MDELAY(70);
+                hprt0.b.prtres = 0; /* Resume */
+                dwc_write_reg32(_core_if->host_if->hprt0, hprt0.d32);                
+                DWC_DEBUGPL(DBG_ANY,"Clear Resume: HPRT0=%0x\n", dwc_read_reg32(_core_if->host_if->hprt0));
+        }        
+
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.wkupintr = 1;
+       dwc_write_reg32 (&_core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/** 
+ * This interrupt indicates that a device has been disconnected from
+ * the root port. 
+ */
+int32_t dwc_otg_handle_disconnect_intr( dwc_otg_core_if_t *_core_if)
+{
+       gintsts_data_t gintsts;
+
+       DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n", 
+                    (dwc_otg_is_host_mode(_core_if)?"Host":"Device"), 
+                    op_state_str(_core_if));
+
+/** @todo Consolidate this if statement. */
+#ifndef DWC_HOST_ONLY
+        if (_core_if->op_state == B_HOST) {
+                /* If in device mode Disconnect and stop the HCD, then
+                 * start the PCD. */
+                hcd_disconnect( _core_if );
+                pcd_start( _core_if );
+                _core_if->op_state = B_PERIPHERAL;
+        } else if (dwc_otg_is_device_mode(_core_if)) {
+                gotgctl_data_t gotgctl = { .d32 = 0 }; 
+                gotgctl.d32 = dwc_read_reg32(&_core_if->core_global_regs->gotgctl);
+                if (gotgctl.b.hstsethnpen==1) {
+                        /* Do nothing, if HNP in process the OTG
+                         * interrupt "Host Negotiation Detected"
+                         * interrupt will do the mode switch.
+                         */
+                } else if (gotgctl.b.devhnpen == 0) {
+                        /* If in device mode Disconnect and stop the HCD, then
+                         * start the PCD. */
+                        hcd_disconnect( _core_if );
+                        pcd_start( _core_if );
+                        _core_if->op_state = B_PERIPHERAL;
+                } else {
+                        DWC_DEBUGPL(DBG_ANY,"!a_peripheral && !devhnpen\n");
+                }
+        } else {
+                if (_core_if->op_state == A_HOST) {
+                        /* A-Cable still connected but device disconnected. */
+                        hcd_disconnect( _core_if );
+                }
+        }
+#endif
+/* Without OTG, we should use the disconnect function!? winder added.*/
+#if 1 // NO OTG, so host only!!
+        hcd_disconnect( _core_if );
+#endif
+   
+       gintsts.d32 = 0;
+       gintsts.b.disconnect = 1;
+       dwc_write_reg32 (&_core_if->core_global_regs->gintsts, gintsts.d32);
+       return 1;
+}
+/**
+ * This interrupt indicates that SUSPEND state has been detected on
+ * the USB.
+ * 
+ * For HNP the USB Suspend interrupt signals the change from
+ * "a_peripheral" to "a_host".
+ *
+ * When power management is enabled the core will be put in low power
+ * mode.
+ */
+int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t *_core_if )
+{
+        dsts_data_t dsts;
+        gintsts_data_t gintsts;
+
+         //805141:<IFTW-fchang>.removed DWC_DEBUGPL(DBG_ANY,"USB SUSPEND\n");
+
+        if (dwc_otg_is_device_mode( _core_if ) ) {             
+                /* Check the Device status register to determine if the Suspend
+                 * state is active. */
+                dsts.d32 = dwc_read_reg32( &_core_if->dev_if->dev_global_regs->dsts);
+                DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
+                DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
+                            "HWCFG4.power Optimize=%d\n", 
+                            dsts.b.suspsts, _core_if->hwcfg4.b.power_optimiz);
+
+
+#ifdef PARTIAL_POWER_DOWN
+/** @todo Add a module parameter for power management. */
+        
+                if (dsts.b.suspsts && _core_if->hwcfg4.b.power_optimiz) {
+                        pcgcctl_data_t power = {.d32=0};
+                        DWC_DEBUGPL(DBG_CIL, "suspend\n");
+
+                        power.b.pwrclmp = 1;
+                        dwc_write_reg32( _core_if->pcgcctl, power.d32);
+
+                        power.b.rstpdwnmodule = 1;
+                        dwc_modify_reg32( _core_if->pcgcctl, 0, power.d32);
+
+                        power.b.stoppclk = 1;
+                        dwc_modify_reg32( _core_if->pcgcctl, 0, power.d32);
+                
+                } else {
+                        DWC_DEBUGPL(DBG_ANY,"disconnect?\n");
+                }
+#endif
+                /* PCD callback for suspend. */
+                pcd_suspend(_core_if);
+        } else {
+                if (_core_if->op_state == A_PERIPHERAL) {
+                        DWC_DEBUGPL(DBG_ANY,"a_peripheral->a_host\n");
+                        /* Clear the a_peripheral flag, back to a_host. */
+                        pcd_stop( _core_if );
+                        hcd_start( _core_if );
+                        _core_if->op_state = A_HOST;
+                }                
+        }
+        
+       /* Clear interrupt */
+       gintsts.d32 = 0;
+       gintsts.b.usbsuspend = 1;
+       dwc_write_reg32( &_core_if->core_global_regs->gintsts, gintsts.d32);
+
+        return 1;
+}
+
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t *_core_if) 
+{
+        gintsts_data_t gintsts;
+        gintmsk_data_t gintmsk;
+        gintmsk_data_t gintmsk_common = {.d32=0};
+       gintmsk_common.b.wkupintr = 1;
+       gintmsk_common.b.sessreqintr = 1;
+       gintmsk_common.b.conidstschng = 1;
+       gintmsk_common.b.otgintr = 1;
+       gintmsk_common.b.modemismatch = 1;
+        gintmsk_common.b.disconnect = 1;
+        gintmsk_common.b.usbsuspend = 1;
+        /** @todo: The port interrupt occurs while in device 
+         * mode. Added code to CIL to clear the interrupt for now! 
+         */
+        gintmsk_common.b.portintr = 1;
+
+        gintsts.d32 = dwc_read_reg32(&_core_if->core_global_regs->gintsts);
+        gintmsk.d32 = dwc_read_reg32(&_core_if->core_global_regs->gintmsk);
+#ifdef DEBUG
+        /* if any common interrupts set */
+        if (gintsts.d32 & gintmsk_common.d32) {
+                DWC_DEBUGPL(DBG_ANY, "gintsts=%08x  gintmsk=%08x\n", 
+                            gintsts.d32, gintmsk.d32);
+        }
+#endif        
+        
+        return ((gintsts.d32 & gintmsk.d32 ) & gintmsk_common.d32);
+
+}
+
+/**
+ * Common interrupt handler.
+ *
+ * The common interrupts are those that occur in both Host and Device mode. 
+ * This handler handles the following interrupts:
+ * - Mode Mismatch Interrupt
+ * - Disconnect Interrupt
+ * - OTG Interrupt
+ * - Connector ID Status Change Interrupt
+ * - Session Request Interrupt.
+ * - Resume / Remote Wakeup Detected Interrupt.
+ * 
+ */
+extern int32_t dwc_otg_handle_common_intr( dwc_otg_core_if_t *_core_if )
+{
+       int retval = 0;
+        gintsts_data_t gintsts;
+
+        gintsts.d32 = dwc_otg_read_common_intr(_core_if);
+
+        if (gintsts.b.modemismatch) {
+                retval |= dwc_otg_handle_mode_mismatch_intr( _core_if );
+        }
+        if (gintsts.b.otgintr) {
+                retval |= dwc_otg_handle_otg_intr( _core_if );
+        }
+        if (gintsts.b.conidstschng) {
+                retval |= dwc_otg_handle_conn_id_status_change_intr( _core_if );
+        }
+        if (gintsts.b.disconnect) {
+                retval |= dwc_otg_handle_disconnect_intr( _core_if );
+        }
+        if (gintsts.b.sessreqintr) {
+                retval |= dwc_otg_handle_session_req_intr( _core_if );
+        }
+        if (gintsts.b.wkupintr) {
+                retval |= dwc_otg_handle_wakeup_detected_intr( _core_if );
+        }
+        if (gintsts.b.usbsuspend) {
+                retval |= dwc_otg_handle_usb_suspend_intr( _core_if );
+        }
+        if (gintsts.b.portintr && dwc_otg_is_device_mode(_core_if)) {
+                /* The port interrupt occurs while in device mode with HPRT0
+                 * Port Enable/Disable.
+                 */
+                gintsts.d32 = 0;
+                gintsts.b.portintr = 1;
+                dwc_write_reg32(&_core_if->core_global_regs->gintsts, 
+                                gintsts.d32);
+                retval |= 1;
+                
+        }
+        return retval;
+}
diff --git a/drivers/usb/dwc_otg/dwc_otg_driver.c b/drivers/usb/dwc_otg/dwc_otg_driver.c
new file mode 100644
index 0000000..1b0daab
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_driver.c
@@ -0,0 +1,1274 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 631780 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ * The dwc_otg_driver module provides the initialization and cleanup entry
+ * points for the DWC_otg driver. This module will be dynamically installed
+ * after Linux is booted using the insmod command. When the module is
+ * installed, the dwc_otg_init function is called. When the module is
+ * removed (using rmmod), the dwc_otg_cleanup function is called.
+ * 
+ * This module also defines a data structure for the dwc_otg_driver, which is
+ * used in conjunction with the standard ARM lm_device structure. These
+ * structures allow the OTG driver to comply with the standard Linux driver
+ * model in which devices and drivers are registered with a bus driver. This
+ * has the benefit that Linux can expose attributes of the driver and device
+ * in its special sysfs file system. Users can then read or write files in
+ * this file system to perform diagnostics on the driver components or the
+ * device.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/stat.h>  /* permission constants */
+#include <linux/irq.h>
+#include <asm/io.h>
+
+#include "dwc_otg_plat.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_cil_ifx.h"
+
+// #include "dwc_otg_pcd.h" // device
+#include "dwc_otg_hcd.h"   // host
+
+#include "dwc_otg_ifx.h" // for Infineon platform specific.
+
+#define        DWC_DRIVER_VERSION      "2.60a 22-NOV-2006"
+#define        DWC_DRIVER_DESC         "HS OTG USB Controller driver"
+
+const char dwc_driver_name[] = "dwc_otg";
+
+static unsigned long dwc_iomem_base = IFX_USB_IOMEM_BASE;
+int dwc_irq = LTQ_USB_INT;
+//int dwc_irq = 54;
+//int dwc_irq = IFXMIPS_USB_OC_INT;
+
+extern int ifx_usb_hc_init(unsigned long base_addr, int irq);
+extern void ifx_usb_hc_remove(void);
+
+/*-------------------------------------------------------------------------*/
+/* Encapsulate the module parameter settings */
+
+static dwc_otg_core_params_t dwc_otg_module_params = {
+        .opt = -1,
+        .otg_cap = -1,
+        .dma_enable = -1,
+       .dma_burst_size = -1,
+       .speed = -1,
+       .host_support_fs_ls_low_power = -1,
+       .host_ls_low_power_phy_clk = -1,
+       .enable_dynamic_fifo = -1,
+       .data_fifo_size = -1,
+       .dev_rx_fifo_size = -1,
+       .dev_nperio_tx_fifo_size = -1,
+       .dev_perio_tx_fifo_size = /* dev_perio_tx_fifo_size_1 */ {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},  /* 15 */
+       .host_rx_fifo_size = -1,
+       .host_nperio_tx_fifo_size = -1,
+       .host_perio_tx_fifo_size = -1,
+       .max_transfer_size = -1,
+       .max_packet_count = -1,
+       .host_channels = -1,
+       .dev_endpoints = -1,
+       .phy_type = -1,
+        .phy_utmi_width = -1,
+        .phy_ulpi_ddr = -1,
+        .phy_ulpi_ext_vbus = -1,
+       .i2c_enable = -1,
+       .ulpi_fs_ls = -1,
+       .ts_dline = -1,
+       .en_multiple_tx_fifo = -1,
+       .dev_tx_fifo_size = { /* dev_tx_fifo_size */
+     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+       }, /* 15 */
+       .thr_ctl = -1,
+       .tx_thr_length = -1,
+       .rx_thr_length = -1,
+};
+
+/**
+ * This function shows the Driver Version.
+ */
+static ssize_t version_show(struct device_driver *dev, char *buf)
+{
+        return snprintf(buf, sizeof(DWC_DRIVER_VERSION)+2,"%s\n", 
+                        DWC_DRIVER_VERSION);
+}
+static DRIVER_ATTR(version, S_IRUGO, version_show, NULL);
+
+/**
+ * Global Debug Level Mask.
+ */
+uint32_t g_dbg_lvl = 0xff; /* OFF */
+
+/**
+ * This function shows the driver Debug Level.
+ */
+static ssize_t dbg_level_show(struct device_driver *_drv, char *_buf)
+{
+        return sprintf(_buf, "0x%0x\n", g_dbg_lvl);
+}
+/**
+ * This function stores the driver Debug Level.
+ */
+static ssize_t dbg_level_store(struct device_driver *_drv, const char *_buf, 
+                               size_t _count)
+{
+       g_dbg_lvl = simple_strtoul(_buf, NULL, 16);
+        return _count;
+}
+static DRIVER_ATTR(debuglevel, S_IRUGO|S_IWUSR, dbg_level_show, dbg_level_store);
+
+/**
+ * This function is called during module intialization to verify that
+ * the module parameters are in a valid state.
+ */
+static int check_parameters(dwc_otg_core_if_t *core_if)
+{
+       int i;
+       int retval = 0;
+
+/* Checks if the parameter is outside of its valid range of values */
+#define DWC_OTG_PARAM_TEST(_param_,_low_,_high_) \
+       ((dwc_otg_module_params._param_ < (_low_)) || \
+         (dwc_otg_module_params._param_ > (_high_)))
+
+/* If the parameter has been set by the user, check that the parameter value is
+ * within the value range of values.  If not, report a module error. */
+#define DWC_OTG_PARAM_ERR(_param_,_low_,_high_,_string_) \
+        do { \
+               if (dwc_otg_module_params._param_ != -1) { \
+                       if (DWC_OTG_PARAM_TEST(_param_,(_low_),(_high_))) { \
+                               DWC_ERROR("`%d' invalid for parameter `%s'\n", \
+                                         dwc_otg_module_params._param_, _string_); \
+                               dwc_otg_module_params._param_ = dwc_param_##_param_##_default; \
+                               retval ++; \
+                       } \
+               } \
+       } while (0)
+
+       DWC_OTG_PARAM_ERR(opt,0,1,"opt");
+       DWC_OTG_PARAM_ERR(otg_cap,0,2,"otg_cap");
+        DWC_OTG_PARAM_ERR(dma_enable,0,1,"dma_enable");
+       DWC_OTG_PARAM_ERR(speed,0,1,"speed");
+       DWC_OTG_PARAM_ERR(host_support_fs_ls_low_power,0,1,"host_support_fs_ls_low_power");
+       DWC_OTG_PARAM_ERR(host_ls_low_power_phy_clk,0,1,"host_ls_low_power_phy_clk");
+       DWC_OTG_PARAM_ERR(enable_dynamic_fifo,0,1,"enable_dynamic_fifo");
+       DWC_OTG_PARAM_ERR(data_fifo_size,32,32768,"data_fifo_size");
+       DWC_OTG_PARAM_ERR(dev_rx_fifo_size,16,32768,"dev_rx_fifo_size");
+       DWC_OTG_PARAM_ERR(dev_nperio_tx_fifo_size,16,32768,"dev_nperio_tx_fifo_size");
+       DWC_OTG_PARAM_ERR(host_rx_fifo_size,16,32768,"host_rx_fifo_size");
+       DWC_OTG_PARAM_ERR(host_nperio_tx_fifo_size,16,32768,"host_nperio_tx_fifo_size");
+       DWC_OTG_PARAM_ERR(host_perio_tx_fifo_size,16,32768,"host_perio_tx_fifo_size");
+       DWC_OTG_PARAM_ERR(max_transfer_size,2047,524288,"max_transfer_size");
+       DWC_OTG_PARAM_ERR(max_packet_count,15,511,"max_packet_count");
+       DWC_OTG_PARAM_ERR(host_channels,1,16,"host_channels");
+       DWC_OTG_PARAM_ERR(dev_endpoints,1,15,"dev_endpoints");
+       DWC_OTG_PARAM_ERR(phy_type,0,2,"phy_type");
+        DWC_OTG_PARAM_ERR(phy_ulpi_ddr,0,1,"phy_ulpi_ddr");
+        DWC_OTG_PARAM_ERR(phy_ulpi_ext_vbus,0,1,"phy_ulpi_ext_vbus");
+       DWC_OTG_PARAM_ERR(i2c_enable,0,1,"i2c_enable");
+       DWC_OTG_PARAM_ERR(ulpi_fs_ls,0,1,"ulpi_fs_ls");
+       DWC_OTG_PARAM_ERR(ts_dline,0,1,"ts_dline");
+
+       if (dwc_otg_module_params.dma_burst_size != -1) {
+               if (DWC_OTG_PARAM_TEST(dma_burst_size,1,1) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,4,4) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,8,8) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,16,16) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,32,32) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,64,64) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,128,128) &&
+                   DWC_OTG_PARAM_TEST(dma_burst_size,256,256))
+               {
+                       DWC_ERROR("`%d' invalid for parameter `dma_burst_size'\n", 
+                                 dwc_otg_module_params.dma_burst_size);
+                       dwc_otg_module_params.dma_burst_size = 32;
+                       retval ++;
+               }
+       }
+
+       if (dwc_otg_module_params.phy_utmi_width != -1) {
+               if (DWC_OTG_PARAM_TEST(phy_utmi_width,8,8) &&
+                   DWC_OTG_PARAM_TEST(phy_utmi_width,16,16)) 
+               {
+                       DWC_ERROR("`%d' invalid for parameter `phy_utmi_width'\n", 
+                                 dwc_otg_module_params.phy_utmi_width);
+                       //dwc_otg_module_params.phy_utmi_width = 16;
+                       dwc_otg_module_params.phy_utmi_width = 8;
+                       retval ++;
+               }
+       }
+
+       for (i=0; i<15; i++) {
+               /** @todo should be like above */
+               //DWC_OTG_PARAM_ERR(dev_perio_tx_fifo_size[i],4,768,"dev_perio_tx_fifo_size");
+               if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] != -1) {
+                       if (DWC_OTG_PARAM_TEST(dev_perio_tx_fifo_size[i],4,768)) {
+                               DWC_ERROR("`%d' invalid for parameter `%s_%d'\n",
+                                         dwc_otg_module_params.dev_perio_tx_fifo_size[i], "dev_perio_tx_fifo_size", i);
+                               dwc_otg_module_params.dev_perio_tx_fifo_size[i] = dwc_param_dev_perio_tx_fifo_size_default;
+                               retval ++;
+                       }
+               }
+       }
+
+       DWC_OTG_PARAM_ERR(en_multiple_tx_fifo, 0, 1, "en_multiple_tx_fifo");
+       for (i = 0; i < 15; i++) {
+               /** @todo should be like above */
+                   //DWC_OTG_PARAM_ERR(dev_tx_fifo_size[i],4,768,"dev_tx_fifo_size");
+                   if (dwc_otg_module_params.dev_tx_fifo_size[i] != -1) {
+                       if (DWC_OTG_PARAM_TEST(dev_tx_fifo_size[i], 4, 768)) {
+                               DWC_ERROR("`%d' invalid for parameter `%s_%d'\n",
+                                       dwc_otg_module_params.dev_tx_fifo_size[i],
+                                    "dev_tx_fifo_size", i);
+                               dwc_otg_module_params.dev_tx_fifo_size[i] =
+                                   dwc_param_dev_tx_fifo_size_default;
+                               retval++;
+                       }
+               }
+       }
+       DWC_OTG_PARAM_ERR(thr_ctl, 0, 7, "thr_ctl");
+       DWC_OTG_PARAM_ERR(tx_thr_length, 8, 128, "tx_thr_length");
+       DWC_OTG_PARAM_ERR(rx_thr_length, 8, 128, "rx_thr_length");
+
+       /* At this point, all module parameters that have been set by the user
+        * are valid, and those that have not are left unset.  Now set their
+        * default values and/or check the parameters against the hardware
+        * configurations of the OTG core. */
+
+
+
+/* This sets the parameter to the default value if it has not been set by the
+ * user */
+#define DWC_OTG_PARAM_SET_DEFAULT(_param_) \
+       ({ \
+               int changed = 1; \
+               if (dwc_otg_module_params._param_ == -1) { \
+                       changed = 0; \
+                       dwc_otg_module_params._param_ = dwc_param_##_param_##_default; \
+               } \
+               changed; \
+       })
+
+/* This checks the macro agains the hardware configuration to see if it is
+ * valid.  It is possible that the default value could be invalid.  In this
+ * case, it will report a module error if the user touched the parameter.
+ * Otherwise it will adjust the value without any error. */
+#define DWC_OTG_PARAM_CHECK_VALID(_param_,_str_,_is_valid_,_set_valid_) \
+       ({ \
+               int changed = DWC_OTG_PARAM_SET_DEFAULT(_param_); \
+               int error = 0; \
+               if (!(_is_valid_)) { \
+                       if (changed) { \
+                               DWC_ERROR("`%d' invalid for parameter `%s'.  Check HW configuration.\n", dwc_otg_module_params._param_,_str_); \
+                               error = 1; \
+                       } \
+                       dwc_otg_module_params._param_ = (_set_valid_); \
+               } \
+               error; \
+       })
+
+       /* OTG Cap */
+       retval += DWC_OTG_PARAM_CHECK_VALID(otg_cap,"otg_cap",
+                  ({
+                         int valid;
+                         valid = 1;
+                         switch (dwc_otg_module_params.otg_cap) {
+                         case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE:
+                                 if (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) valid = 0;
+                                 break;
+                         case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE:
+                                 if ((core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) &&
+                                     (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG) &&
+                                     (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) &&
+                                     (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST))
+                                 {
+                                         valid = 0;
+                                 }
+                                 break;
+                         case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE:
+                                 /* always valid */
+                                 break;
+                         } 
+                         valid;
+                 }),
+                  (((core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) ||
+                   (core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG) ||
+                   (core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) ||
+                   (core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) ?
+                  DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE :
+                  DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE));
+       
+       retval += DWC_OTG_PARAM_CHECK_VALID(dma_enable,"dma_enable",
+                                           ((dwc_otg_module_params.dma_enable == 1) && (core_if->hwcfg2.b.architecture == 0)) ? 0 : 1, 
+                                           0);
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(opt,"opt",
+                                           1,
+                                           0);
+
+       DWC_OTG_PARAM_SET_DEFAULT(dma_burst_size);
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(host_support_fs_ls_low_power,
+                                           "host_support_fs_ls_low_power",
+                                           1, 0);
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(enable_dynamic_fifo,
+                                 "enable_dynamic_fifo",
+                                 ((dwc_otg_module_params.enable_dynamic_fifo == 0) ||
+                                  (core_if->hwcfg2.b.dynamic_fifo == 1)), 0);
+
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(data_fifo_size,
+                                 "data_fifo_size",
+                                 (dwc_otg_module_params.data_fifo_size <= core_if->hwcfg3.b.dfifo_depth),
+                                 core_if->hwcfg3.b.dfifo_depth);
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(dev_rx_fifo_size,
+                                 "dev_rx_fifo_size",
+                                 (dwc_otg_module_params.dev_rx_fifo_size <= dwc_read_reg32(&core_if->core_global_regs->grxfsiz)),
+                                 dwc_read_reg32(&core_if->core_global_regs->grxfsiz));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(dev_nperio_tx_fifo_size,
+                                 "dev_nperio_tx_fifo_size",
+                                 (dwc_otg_module_params.dev_nperio_tx_fifo_size <= (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)),
+                                 (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(host_rx_fifo_size,
+                                           "host_rx_fifo_size",
+                                           (dwc_otg_module_params.host_rx_fifo_size <= dwc_read_reg32(&core_if->core_global_regs->grxfsiz)),
+                                           dwc_read_reg32(&core_if->core_global_regs->grxfsiz));
+
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(host_nperio_tx_fifo_size,
+                                 "host_nperio_tx_fifo_size",
+                                 (dwc_otg_module_params.host_nperio_tx_fifo_size <= (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)),
+                                 (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(host_perio_tx_fifo_size,
+                                           "host_perio_tx_fifo_size",
+                                           (dwc_otg_module_params.host_perio_tx_fifo_size <= ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz) >> 16))),
+                                           ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz) >> 16)));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(max_transfer_size,
+                                 "max_transfer_size",
+                                 (dwc_otg_module_params.max_transfer_size < (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))),
+                                 ((1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11)) - 1));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(max_packet_count,
+                                 "max_packet_count",
+                                 (dwc_otg_module_params.max_packet_count < (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))),
+                                 ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4)) - 1));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(host_channels,
+                                 "host_channels",
+                                 (dwc_otg_module_params.host_channels <= (core_if->hwcfg2.b.num_host_chan + 1)),
+                                 (core_if->hwcfg2.b.num_host_chan + 1));
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(dev_endpoints,
+                                 "dev_endpoints",
+                                 (dwc_otg_module_params.dev_endpoints <= (core_if->hwcfg2.b.num_dev_ep)),
+                                 core_if->hwcfg2.b.num_dev_ep);
+
+/*
+ * Define the following to disable the FS PHY Hardware checking.  This is for
+ * internal testing only.
+ *
+ * #define NO_FS_PHY_HW_CHECKS 
+ */
+
+#ifdef NO_FS_PHY_HW_CHECKS
+       retval += DWC_OTG_PARAM_CHECK_VALID(phy_type,
+                                           "phy_type", 1, 0);
+#else
+       retval += DWC_OTG_PARAM_CHECK_VALID(phy_type,
+                                           "phy_type",
+                                           ({
+                                                   int valid = 0;
+                                                   if ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_UTMI) &&
+                                                       ((core_if->hwcfg2.b.hs_phy_type == 1) || 
+                                                        (core_if->hwcfg2.b.hs_phy_type == 3)))
+                                                   {
+                                                           valid = 1;
+                                                   }
+                                                   else if ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_ULPI) &&
+                                                            ((core_if->hwcfg2.b.hs_phy_type == 2) || 
+                                                             (core_if->hwcfg2.b.hs_phy_type == 3)))
+                                                   {
+                                                           valid = 1;
+                                                   }
+                                                   else if ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) &&
+                                                            (core_if->hwcfg2.b.fs_phy_type == 1))
+                                                   {
+                                                           valid = 1;
+                                                   }
+                                                   valid;
+                                           }),
+                                           ({
+                                                   int set = DWC_PHY_TYPE_PARAM_FS;
+                                                   if (core_if->hwcfg2.b.hs_phy_type) { 
+                                                           if ((core_if->hwcfg2.b.hs_phy_type == 3) || 
+                                                               (core_if->hwcfg2.b.hs_phy_type == 1)) {
+                                                                   set = DWC_PHY_TYPE_PARAM_UTMI;
+                                                           }
+                                                           else {
+                                                                   set = DWC_PHY_TYPE_PARAM_ULPI;
+                                                           }
+                                                   }
+                                                   set;
+                                           }));
+#endif
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(speed,"speed",
+                                           (dwc_otg_module_params.speed == 0) && (dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? 0 : 1,
+                                           dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS ? 1 : 0);
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(host_ls_low_power_phy_clk,
+                                           "host_ls_low_power_phy_clk",
+                                           ((dwc_otg_module_params.host_ls_low_power_phy_clk == DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ) && (dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? 0 : 1),
+                                           ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ : DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ));
+
+        DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ddr);
+        DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ext_vbus);
+        DWC_OTG_PARAM_SET_DEFAULT(phy_utmi_width);
+        DWC_OTG_PARAM_SET_DEFAULT(ulpi_fs_ls);
+        DWC_OTG_PARAM_SET_DEFAULT(ts_dline);
+
+#ifdef NO_FS_PHY_HW_CHECKS
+       retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable,
+                                           "i2c_enable", 1, 0);
+#else
+       retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable,
+                                           "i2c_enable",
+                                           (dwc_otg_module_params.i2c_enable == 1) && (core_if->hwcfg3.b.i2c == 0) ? 0 : 1,
+                                           0);
+#endif
+
+       for (i=0; i<16; i++) {
+
+               int changed = 1;
+               int error = 0;
+
+               if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] == -1) {
+                       changed = 0;
+                       dwc_otg_module_params.dev_perio_tx_fifo_size[i] = dwc_param_dev_perio_tx_fifo_size_default;
+               }
+               if (!(dwc_otg_module_params.dev_perio_tx_fifo_size[i] <= (dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i])))) {
+                       if (changed) {
+                               DWC_ERROR("`%d' invalid for parameter `dev_perio_fifo_size_%d'.  Check HW configuration.\n", dwc_otg_module_params.dev_perio_tx_fifo_size[i],i);
+                               error = 1;
+                       }
+                       dwc_otg_module_params.dev_perio_tx_fifo_size[i] = dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i]);
+               }
+               retval += error;
+       }
+
+       retval += DWC_OTG_PARAM_CHECK_VALID(en_multiple_tx_fifo,
+                               "en_multiple_tx_fifo",
+                               ((dwc_otg_module_params.en_multiple_tx_fifo == 1) &&
+                               (core_if->hwcfg4.b.ded_fifo_en == 0)) ? 0 : 1, 0);
+
+       for (i = 0; i < 16; i++) {
+               int changed = 1;
+               int error = 0;
+               if (dwc_otg_module_params.dev_tx_fifo_size[i] == -1) {
+                       changed = 0;
+                       dwc_otg_module_params.dev_tx_fifo_size[i] =
+                           dwc_param_dev_tx_fifo_size_default;
+               }
+               if (!(dwc_otg_module_params.dev_tx_fifo_size[i] <=
+                    (dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i])))) {
+                       if (changed) {
+                               DWC_ERROR("%d' invalid for parameter `dev_perio_fifo_size_%d'."
+                                       "Check HW configuration.\n",dwc_otg_module_params.dev_tx_fifo_size[i],i);
+                               error = 1;
+                       }
+                       dwc_otg_module_params.dev_tx_fifo_size[i] =
+                           dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i]);
+               }
+               retval += error;
+       }
+       DWC_OTG_PARAM_SET_DEFAULT(thr_ctl);
+       DWC_OTG_PARAM_SET_DEFAULT(tx_thr_length);
+       DWC_OTG_PARAM_SET_DEFAULT(rx_thr_length);
+       return retval;
+} // check_parameters 
+
+
+/** 
+ * This function is the top level interrupt handler for the Common
+ * (Device and host modes) interrupts.
+ */
+static irqreturn_t dwc_otg_common_irq(int _irq, void *_dev)
+{
+       dwc_otg_device_t *otg_dev = _dev;
+       int32_t retval = IRQ_NONE;
+
+       retval = dwc_otg_handle_common_intr( otg_dev->core_if );
+
+       mask_and_ack_ifx_irq (_irq);
+    
+       return IRQ_RETVAL(retval);
+}
+
+
+/**
+ * This function is called when a DWC_OTG device is unregistered with the
+ * dwc_otg_driver. This happens, for example, when the rmmod command is
+ * executed. The device may or may not be electrically present. If it is
+ * present, the driver stops device processing. Any resources used on behalf
+ * of this device are freed.
+ *
+ * @return
+ */
+static int
+dwc_otg_driver_remove(struct platform_device *_dev)
+{
+    //dwc_otg_device_t *otg_dev = dev_get_drvdata(&_dev->dev);
+    dwc_otg_device_t *otg_dev = platform_get_drvdata(_dev);
+
+    DWC_DEBUGPL(DBG_ANY, "%s(%p)\n", __func__, _dev);
+
+    if (otg_dev == NULL) {
+        /* Memory allocation for the dwc_otg_device failed. */
+        return 0;
+    }
+
+    /*
+    * Free the IRQ 
+    */
+    if (otg_dev->common_irq_installed) {
+        free_irq( otg_dev->irq, otg_dev );
+    }
+
+#ifndef DWC_DEVICE_ONLY
+    if (otg_dev->hcd != NULL) {
+        dwc_otg_hcd_remove(&_dev->dev);
+    }
+#endif
+       printk("after removehcd\n");
+
+// Note: Integrate HOST and DEVICE(Gadget) is not planned yet.
+#ifndef DWC_HOST_ONLY
+    if (otg_dev->pcd != NULL) {
+        dwc_otg_pcd_remove(otg_dev);
+    }
+#endif
+    if (otg_dev->core_if != NULL) {
+        dwc_otg_cil_remove( otg_dev->core_if );
+    }
+       printk("after removecil\n");
+
+    /*
+     * Remove the device attributes
+     */
+    dwc_otg_attr_remove(&_dev->dev);
+       printk("after removeattr\n");
+
+    /*
+     * Return the memory.
+     */
+    if (otg_dev->base != NULL) {
+        iounmap(otg_dev->base);
+    }
+       if (otg_dev->phys_addr != 0) {
+               release_mem_region(otg_dev->phys_addr, otg_dev->base_len);
+       }
+    kfree(otg_dev);
+        
+    /*
+     * Clear the drvdata pointer.
+     */
+       //dev_set_drvdata(&_dev->dev, 0);
+    platform_set_drvdata(_dev, 0);
+    return 0;
+}
+
+/**
+ * This function is called when an DWC_OTG device is bound to a
+ * dwc_otg_driver. It creates the driver components required to
+ * control the device (CIL, HCD, and PCD) and it initializes the
+ * device. The driver components are stored in a dwc_otg_device
+ * structure. A reference to the dwc_otg_device is saved in the
+ * lm_device. This allows the driver to access the dwc_otg_device
+ * structure on subsequent calls to driver methods for this device.
+ *
+ * @return
+ */
+static int __devinit
+dwc_otg_driver_probe(struct platform_device *_dev)
+{
+       int retval = 0;
+       dwc_otg_device_t *dwc_otg_device;
+       int pin = (int)_dev->dev.platform_data;
+       int32_t snpsid;
+       struct resource *res;
+       gusbcfg_data_t usbcfg = {.d32 = 0};
+
+       // GPIOs
+       if(pin >= 0)
+       {
+               gpio_request(pin, "usb_power");
+               gpio_direction_output(pin, 1);
+               gpio_set_value(pin, 1);
+               gpio_export(pin, 0);
+       }
+       dev_dbg(&_dev->dev, "dwc_otg_driver_probe (%p)\n", _dev);
+
+    dwc_otg_device = kmalloc(sizeof(dwc_otg_device_t), GFP_KERNEL);
+    if (dwc_otg_device == 0) {
+        dev_err(&_dev->dev, "kmalloc of dwc_otg_device failed\n");
+        retval = -ENOMEM;
+        goto fail;
+    }
+    memset(dwc_otg_device, 0, sizeof(*dwc_otg_device));
+    dwc_otg_device->reg_offset = 0xFFFFFFFF;
+
+    /*
+     * Retrieve the memory and IRQ resources.
+     */
+       dwc_otg_device->irq = platform_get_irq(_dev, 0);
+       if (dwc_otg_device->irq == 0) {
+               dev_err(&_dev->dev, "no device irq\n");
+               retval = -ENODEV;
+               goto fail;
+       }
+       dev_dbg(&_dev->dev, "OTG - device irq: %d\n", dwc_otg_device->irq);
+       res = platform_get_resource(_dev, IORESOURCE_MEM, 0);
+       if (res == NULL) {
+               dev_err(&_dev->dev, "no CSR address\n");
+               retval = -ENODEV;
+               goto fail;
+       }
+       dev_dbg(&_dev->dev, "OTG - ioresource_mem start0x%08x: end:0x%08x\n",
+               (unsigned)res->start, (unsigned)res->end);
+       dwc_otg_device->phys_addr = res->start;
+       dwc_otg_device->base_len = res->end - res->start + 1;
+       if (request_mem_region(dwc_otg_device->phys_addr, dwc_otg_device->base_len,
+           dwc_driver_name) == NULL) {
+               dev_err(&_dev->dev, "request_mem_region failed\n");
+               retval = -EBUSY;
+               goto fail;
+       }
+
+       /*
+     * Map the DWC_otg Core memory into virtual address space.
+     */
+    dwc_otg_device->base = ioremap_nocache(dwc_otg_device->phys_addr, dwc_otg_device->base_len);
+    if (dwc_otg_device->base == NULL)    {
+        dev_err(&_dev->dev, "ioremap() failed\n");
+        retval = -ENOMEM;
+        goto fail;
+    }
+    dev_dbg(&_dev->dev, "mapped base=0x%08x\n", (unsigned)dwc_otg_device->base);
+
+    /*
+     * Attempt to ensure this device is really a DWC_otg Controller.
+     * Read and verify the SNPSID register contents. The value should be
+     * 0x45F42XXX, which corresponds to "OT2", as in "OTG version 2.XX".
+     */
+    snpsid = dwc_read_reg32((uint32_t *)((uint8_t *)dwc_otg_device->base + 0x40));
+    if ((snpsid & 0xFFFFF000) != 0x4F542000) {
+        dev_err(&_dev->dev, "Bad value for SNPSID: 0x%08x\n", snpsid);
+        retval = -EINVAL;
+        goto fail;
+    }
+
+    /*
+     * Initialize driver data to point to the global DWC_otg
+     * Device structure.
+     */
+    platform_set_drvdata(_dev, dwc_otg_device);
+    dev_dbg(&_dev->dev, "dwc_otg_device=0x%p\n", dwc_otg_device);
+    dwc_otg_device->core_if = dwc_otg_cil_init( dwc_otg_device->base, &dwc_otg_module_params);
+    if (dwc_otg_device->core_if == 0) {
+        dev_err(&_dev->dev, "CIL initialization failed!\n");
+        retval = -ENOMEM;
+        goto fail;
+    }
+       
+    /*
+     * Validate parameter values.
+     */
+    if (check_parameters(dwc_otg_device->core_if) != 0) {
+        retval = -EINVAL;
+        goto fail;
+    }
+
+       /* Added for PLB DMA phys virt mapping */
+       //dwc_otg_device->core_if->phys_addr = dwc_otg_device->phys_addr;
+    /*
+     * Create Device Attributes in sysfs
+     */  
+    dwc_otg_attr_create (&_dev->dev);
+
+    /*
+     * Disable the global interrupt until all the interrupt
+     * handlers are installed.
+     */
+    dwc_otg_disable_global_interrupts( dwc_otg_device->core_if );
+    /*
+     * Install the interrupt handler for the common interrupts before
+     * enabling common interrupts in core_init below.
+     */
+    DWC_DEBUGPL( DBG_CIL, "registering (common) handler for irq%d\n", dwc_otg_device->irq);
+
+    retval = request_irq((unsigned int)dwc_otg_device->irq, dwc_otg_common_irq,
+        //SA_INTERRUPT|SA_SHIRQ, "dwc_otg", (void *)dwc_otg_device );
+        IRQF_SHARED, "dwc_otg", (void *)dwc_otg_device );
+        //IRQF_DISABLED, "dwc_otg", (void *)dwc_otg_device );
+    if (retval != 0) {
+        DWC_ERROR("request of irq%d failed retval: %d\n", dwc_otg_device->irq, retval);
+        retval = -EBUSY;
+        goto fail;
+    } else {
+        dwc_otg_device->common_irq_installed = 1;
+    }
+
+    /*
+     * Initialize the DWC_otg core.
+     */
+    dwc_otg_core_init( dwc_otg_device->core_if );
+
+
+#ifndef DWC_HOST_ONLY  // otg device mode. (gadget.)
+    /*
+     * Initialize the PCD
+     */
+    retval = dwc_otg_pcd_init(dwc_otg_device);
+    if (retval != 0) {
+        DWC_ERROR("dwc_otg_pcd_init failed\n");
+        dwc_otg_device->pcd = NULL;
+        goto fail;
+    }
+#endif // DWC_HOST_ONLY
+
+#ifndef DWC_DEVICE_ONLY // otg host mode. (HCD)
+    /*
+     * Initialize the HCD
+     */
+#if 1  /*fscz*/
+       /* force_host_mode */
+       usbcfg.d32 = dwc_read_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg);
+       usbcfg.b.force_host_mode = 1;
+       dwc_write_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg, usbcfg.d32);
+#endif
+    retval = dwc_otg_hcd_init(&_dev->dev, dwc_otg_device);
+    if (retval != 0) {
+        DWC_ERROR("dwc_otg_hcd_init failed\n");
+        dwc_otg_device->hcd = NULL;
+        goto fail;
+    }
+#endif // DWC_DEVICE_ONLY
+
+    /*
+     * Enable the global interrupt after all the interrupt
+     * handlers are installed.
+     */
+    dwc_otg_enable_global_interrupts( dwc_otg_device->core_if );
+#if 0  /*fscz*/
+       usbcfg.d32 = dwc_read_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg);
+       usbcfg.b.force_host_mode = 0;
+       dwc_write_reg32(&dwc_otg_device->core_if->core_global_regs ->gusbcfg, usbcfg.d32);
+#endif
+
+
+    return 0;
+
+fail:
+    dwc_otg_driver_remove(_dev);
+    return retval;
+}
+
+/** 
+ * This structure defines the methods to be called by a bus driver
+ * during the lifecycle of a device on that bus. Both drivers and
+ * devices are registered with a bus driver. The bus driver matches
+ * devices to drivers based on information in the device and driver
+ * structures.
+ *
+ * The probe function is called when the bus driver matches a device
+ * to this driver. The remove function is called when a device is
+ * unregistered with the bus driver.
+ */
+struct platform_driver dwc_otg_driver = {
+       .probe  = dwc_otg_driver_probe,
+       .remove = dwc_otg_driver_remove,
+//     .suspend = dwc_otg_driver_suspend,
+//     .resume = dwc_otg_driver_resume,
+       .driver = {
+               .name = dwc_driver_name,
+               .owner = THIS_MODULE,
+       },
+};
+EXPORT_SYMBOL(dwc_otg_driver);
+
+/**
+ * This function is called when the dwc_otg_driver is installed with the
+ * insmod command. It registers the dwc_otg_driver structure with the
+ * appropriate bus driver. This will cause the dwc_otg_driver_probe function
+ * to be called. In addition, the bus driver will automatically expose
+ * attributes defined for the device and driver in the special sysfs file
+ * system.
+ *
+ * @return
+ */
+static int __init dwc_otg_init(void) 
+{
+    int retval = 0;
+
+    printk(KERN_INFO "%s: version %s\n", dwc_driver_name, DWC_DRIVER_VERSION);
+
+       // ifxmips setup
+    retval = ifx_usb_hc_init(dwc_iomem_base, dwc_irq);
+    if (retval < 0)
+    {
+        printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+        return retval;
+    }
+    dwc_otg_power_on(); // ifx only!!
+
+
+    retval = platform_driver_register(&dwc_otg_driver);
+
+    if (retval < 0) {
+        printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+        goto error1;
+    }
+
+    retval = driver_create_file(&dwc_otg_driver.driver, &driver_attr_version);
+    if (retval < 0)
+    {
+        printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+        goto error2;
+    }
+    retval = driver_create_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+    if (retval < 0)
+    {
+        printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+        goto error3;
+    }
+    return retval;
+
+
+error3:
+    driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+error2:
+    driver_unregister(&dwc_otg_driver.driver);
+error1:
+    ifx_usb_hc_remove();
+    return retval;
+}
+module_init(dwc_otg_init);
+
+/** 
+ * This function is called when the driver is removed from the kernel
+ * with the rmmod command. The driver unregisters itself with its bus
+ * driver.
+ *
+ */
+static void __exit dwc_otg_cleanup(void)
+{
+    printk(KERN_DEBUG "dwc_otg_cleanup()\n");
+
+    driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+    driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+
+    platform_driver_unregister(&dwc_otg_driver);
+    ifx_usb_hc_remove();
+
+    printk(KERN_INFO "%s module removed\n", dwc_driver_name);
+}
+module_exit(dwc_otg_cleanup);
+
+MODULE_DESCRIPTION(DWC_DRIVER_DESC);
+MODULE_AUTHOR("Synopsys Inc.");
+MODULE_LICENSE("GPL");
+
+module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444);
+MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None");
+module_param_named(opt, dwc_otg_module_params.opt, int, 0444);
+MODULE_PARM_DESC(opt, "OPT Mode");
+module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444);
+MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled");
+module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size, int, 0444);
+MODULE_PARM_DESC(dma_burst_size, "DMA Burst Size 1, 4, 8, 16, 32, 64, 128, 256");
+module_param_named(speed, dwc_otg_module_params.speed, int, 0444);
+MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed");
+module_param_named(host_support_fs_ls_low_power, dwc_otg_module_params.host_support_fs_ls_low_power, int, 0444);
+MODULE_PARM_DESC(host_support_fs_ls_low_power, "Support Low Power w/FS or LS 0=Support 1=Don't Support");
+module_param_named(host_ls_low_power_phy_clk, dwc_otg_module_params.host_ls_low_power_phy_clk, int, 0444);
+MODULE_PARM_DESC(host_ls_low_power_phy_clk, "Low Speed Low Power Clock 0=48Mhz 1=6Mhz");
+module_param_named(enable_dynamic_fifo, dwc_otg_module_params.enable_dynamic_fifo, int, 0444);
+MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing");
+module_param_named(data_fifo_size, dwc_otg_module_params.data_fifo_size, int, 0444);
+MODULE_PARM_DESC(data_fifo_size, "Total number of words in the data FIFO memory 32-32768");
+module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size, int, 0444);
+MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(dev_nperio_tx_fifo_size, dwc_otg_module_params.dev_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(dev_nperio_tx_fifo_size, "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(dev_perio_tx_fifo_size_1, dwc_otg_module_params.dev_perio_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_1, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_2, dwc_otg_module_params.dev_perio_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_2, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_3, dwc_otg_module_params.dev_perio_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_3, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_4, dwc_otg_module_params.dev_perio_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_4, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_5, dwc_otg_module_params.dev_perio_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_5, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_6, dwc_otg_module_params.dev_perio_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_6, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_7, dwc_otg_module_params.dev_perio_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_7, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_8, dwc_otg_module_params.dev_perio_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_8, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_9, dwc_otg_module_params.dev_perio_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_9, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_10, dwc_otg_module_params.dev_perio_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_10, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_11, dwc_otg_module_params.dev_perio_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_11, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_12, dwc_otg_module_params.dev_perio_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_12, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_13, dwc_otg_module_params.dev_perio_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_13, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_14, dwc_otg_module_params.dev_perio_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_14, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_15, dwc_otg_module_params.dev_perio_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_15, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(host_nperio_tx_fifo_size, dwc_otg_module_params.host_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_nperio_tx_fifo_size, "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(host_perio_tx_fifo_size, dwc_otg_module_params.host_perio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_perio_tx_fifo_size, "Number of words in the host periodic Tx FIFO 16-32768");
+module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size, int, 0444);
+/** @todo Set the max to 512K, modify checks */
+MODULE_PARM_DESC(max_transfer_size, "The maximum transfer size supported in bytes 2047-65535");
+module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count, int, 0444);
+MODULE_PARM_DESC(max_packet_count, "The maximum number of packets in a transfer 15-511");
+module_param_named(host_channels, dwc_otg_module_params.host_channels, int, 0444);
+MODULE_PARM_DESC(host_channels, "The number of host channel registers to use 1-16");
+module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints, int, 0444);
+MODULE_PARM_DESC(dev_endpoints, "The number of endpoints in addition to EP0 available for device mode 1-15");
+module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444);
+MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI");
+module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width, int, 0444);
+MODULE_PARM_DESC(phy_utmi_width, "Specifies the UTMI+ Data Width 8 or 16 bits");
+module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr, int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ddr, "ULPI at double or single data rate 0=Single 1=Double");
+module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus, int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ext_vbus, "ULPI PHY using internal or external vbus 0=Internal");
+module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444);
+MODULE_PARM_DESC(i2c_enable, "FS PHY Interface");
+module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444);
+MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only");
+module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444);
+MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs");
+module_param_named(debug, g_dbg_lvl, int, 0444);
+MODULE_PARM_DESC(debug, "0");
+module_param_named(en_multiple_tx_fifo,
+                    dwc_otg_module_params.en_multiple_tx_fifo, int, 0444);
+MODULE_PARM_DESC(en_multiple_tx_fifo,
+                 "Dedicated Non Periodic Tx FIFOs 0=disabled 1=enabled");
+module_param_named(dev_tx_fifo_size_1,
+                   dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_2,
+                   dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_3,
+                   dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_4,
+                   dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_5,
+                   dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_6,
+                   dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_7,
+                   dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_8,
+                   dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_9,
+                   dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_10,
+                   dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_11,
+                   dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_12,
+                   dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_13,
+                   dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_14,
+                   dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_15,
+                   dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768");
+module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444);
+MODULE_PARM_DESC(thr_ctl, "Thresholding enable flag bit"
+               "0 - non ISO Tx thr., 1 - ISO Tx thr., 2 - Rx thr.- bit 0=disabled 1=enabled");
+module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length, int, 0444);
+MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs");
+module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length, int, 0444);
+MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs");
+module_param_named (iomem_base, dwc_iomem_base, ulong, 0444);
+MODULE_PARM_DESC (dwc_iomem_base, "The base address of the DWC_OTG register.");
+module_param_named (irq, dwc_irq, int, 0444);
+MODULE_PARM_DESC (dwc_irq, "The interrupt number");
+
+/** @page "Module Parameters"
+ *
+ * The following parameters may be specified when starting the module.
+ * These parameters define how the DWC_otg controller should be
+ * configured.  Parameter values are passed to the CIL initialization
+ * function dwc_otg_cil_init
+ *
+ * Example: <code>modprobe dwc_otg speed=1 otg_cap=1</code>
+ *
+ 
+ <table>
+ <tr><td>Parameter Name</td><td>Meaning</td></tr> 
+ 
+ <tr>
+ <td>otg_cap</td>
+ <td>Specifies the OTG capabilities. The driver will automatically detect the
+ value for this parameter if none is specified.
+ - 0: HNP and SRP capable (default, if available)
+ - 1: SRP Only capable
+ - 2: No HNP/SRP capable
+ </td></tr>
+ 
+ <tr>
+ <td>dma_enable</td>
+ <td>Specifies whether to use slave or DMA mode for accessing the data FIFOs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Slave
+ - 1: DMA (default, if available)
+ </td></tr>
+ 
+ <tr>
+ <td>dma_burst_size</td>
+ <td>The DMA Burst size (applicable only for External DMA Mode).
+ - Values: 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ </td></tr>
+ 
+ <tr>
+ <td>speed</td>
+ <td>Specifies the maximum speed of operation in host and device mode. The
+ actual speed depends on the speed of the attached device and the value of
+ phy_type.
+ - 0: High Speed (default)
+ - 1: Full Speed
+ </td></tr>
+ 
+ <tr>
+ <td>host_support_fs_ls_low_power</td>
+ <td>Specifies whether low power mode is supported when attached to a Full
+ Speed or Low Speed device in host mode.
+ - 0: Don't support low power mode (default)
+ - 1: Support low power mode
+ </td></tr>
+ 
+ <tr>
+ <td>host_ls_low_power_phy_clk</td>
+ <td>Specifies the PHY clock rate in low power mode when connected to a Low
+ Speed device in host mode. This parameter is applicable only if
+ HOST_SUPPORT_FS_LS_LOW_POWER is enabled.
+ - 0: 48 MHz (default)
+ - 1: 6 MHz
+ </td></tr>
+ 
+ <tr>
+ <td>enable_dynamic_fifo</td>
+ <td> Specifies whether FIFOs may be resized by the driver software.
+ - 0: Use cC FIFO size parameters
+ - 1: Allow dynamic FIFO sizing (default)
+ </td></tr>
+ 
+ <tr>
+ <td>data_fifo_size</td>
+ <td>Total number of 4-byte words in the data FIFO memory. This memory
+ includes the Rx FIFO, non-periodic Tx FIFO, and periodic Tx FIFOs.
+ - Values: 32 to 32768 (default 8192)
+
+ Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ </td></tr>
+ 
+ <tr>
+ <td>dev_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1064)
+ </td></tr>
+ 
+ <tr>
+ <td>dev_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in device mode when
+ dynamic FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+ 
+ <tr>
+ <td>dev_perio_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the periodic Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+ 
+ <tr>
+ <td>host_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in host mode when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+ 
+ <tr>
+ <td>host_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in host mode when
+ dynamic FIFO sizing is enabled in the core.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+ 
+ <tr>
+ <td>host_perio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the host periodic Tx FIFO when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+ 
+ <tr>
+ <td>max_transfer_size</td>
+ <td>The maximum transfer size supported in bytes.
+ - Values: 2047 to 65,535 (default 65,535)
+ </td></tr>
+ 
+ <tr>
+ <td>max_packet_count</td>
+ <td>The maximum number of packets in a transfer.
+ - Values: 15 to 511 (default 511)
+ </td></tr>
+ 
+ <tr>
+ <td>host_channels</td>
+ <td>The number of host channel registers to use.
+ - Values: 1 to 16 (default 12)
+
+ Note: The FPGA configuration supports a maximum of 12 host channels.
+ </td></tr>
+ 
+ <tr>
+ <td>dev_endpoints</td>
+ <td>The number of endpoints in addition to EP0 available for device mode
+ operations.
+ - Values: 1 to 15 (default 6 IN and OUT)
+
+ Note: The FPGA configuration supports a maximum of 6 IN and OUT endpoints in
+ addition to EP0.
+ </td></tr>
+ 
+ <tr>
+ <td>phy_type</td>
+ <td>Specifies the type of PHY interface to use. By default, the driver will
+ automatically detect the phy_type.
+ - 0: Full Speed
+ - 1: UTMI+ (default, if available)
+ - 2: ULPI
+ </td></tr>
+ 
+ <tr>
+ <td>phy_utmi_width</td>
+ <td>Specifies the UTMI+ Data Width. This parameter is applicable for a
+ phy_type of UTMI+. Also, this parameter is applicable only if the
+ OTG_HSPHY_WIDTH cC parameter was set to "8 and 16 bits", meaning that the
+ core has been configured to work at either data path width.
+ - Values: 8 or 16 bits (default 16)
+ </td></tr>
+ 
+ <tr>
+ <td>phy_ulpi_ddr</td>
+ <td>Specifies whether the ULPI operates at double or single data rate. This
+ parameter is only applicable if phy_type is ULPI.
+ - 0: single data rate ULPI interface with 8 bit wide data bus (default)
+ - 1: double data rate ULPI interface with 4 bit wide data bus
+ </td></tr>
+
+ <tr>
+ <td>i2c_enable</td>
+ <td>Specifies whether to use the I2C interface for full speed PHY. This
+ parameter is only applicable if PHY_TYPE is FS.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>otg_en_multiple_tx_fifo</td>
+ <td>Specifies whether dedicatedto tx fifos are enabled for non periodic IN EPs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Disabled
+ - 1: Enabled (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dev_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+*/
diff --git a/drivers/usb/dwc_otg/dwc_otg_driver.h b/drivers/usb/dwc_otg/dwc_otg_driver.h
new file mode 100644
index 0000000..7e6940d
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_driver.h
@@ -0,0 +1,84 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.h $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 510275 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_DRIVER_H__)
+#define __DWC_OTG_DRIVER_H__
+
+/** @file
+ * This file contains the interface to the Linux driver.
+ */
+#include "dwc_otg_cil.h"
+
+/* Type declarations */
+struct dwc_otg_pcd;
+struct dwc_otg_hcd;
+
+/**
+ * This structure is a wrapper that encapsulates the driver components used to
+ * manage a single DWC_otg controller.
+ */
+typedef struct dwc_otg_device
+{
+    /** Base address returned from ioremap() */
+    void *base;
+    
+    /** Pointer to the core interface structure. */
+    dwc_otg_core_if_t *core_if;
+
+    /** Register offset for Diagnostic API.*/
+    uint32_t reg_offset;
+
+    /** Pointer to the PCD structure. */
+    struct dwc_otg_pcd *pcd;
+
+    /** Pointer to the HCD structure. */
+    struct dwc_otg_hcd *hcd;
+
+    /** Flag to indicate whether the common IRQ handler is installed. */
+    uint8_t common_irq_installed;
+
+    /** Interrupt request number. */
+       unsigned int irq;
+
+    /** Physical address of Control and Status registers, used by
+     *  release_mem_region().
+     */
+       resource_size_t phys_addr;
+
+    /** Length of memory region, used by release_mem_region(). */
+       unsigned long base_len;
+} dwc_otg_device_t;
+
+//#define dev_dbg(fake, format, arg...) printk(KERN_CRIT __FILE__ ":%d: " format "\n" , __LINE__, ## arg)
+
+#endif
diff --git a/drivers/usb/dwc_otg/dwc_otg_hcd.c b/drivers/usb/dwc_otg/dwc_otg_hcd.c
new file mode 100644
index 0000000..ad6bc72
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_hcd.c
@@ -0,0 +1,2870 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 631780 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the implementation of the HCD. In Linux, the HCD
+ * implements the hc_driver API.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+
+#include <linux/device.h>
+
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+
+#include <linux/dma-mapping.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+#include <asm/irq.h>
+#include "dwc_otg_ifx.h" // for Infineon platform specific.
+extern atomic_t release_later;
+
+static u64 dma_mask = DMA_BIT_MASK(32);
+
+static const char dwc_otg_hcd_name [] = "dwc_otg_hcd";
+static const struct hc_driver dwc_otg_hc_driver = 
+{
+       .description =          dwc_otg_hcd_name,
+       .product_desc =         "DWC OTG Controller",
+       .hcd_priv_size =        sizeof(dwc_otg_hcd_t),
+       .irq =                  dwc_otg_hcd_irq,
+       .flags =                HCD_MEMORY | HCD_USB2,
+       //.reset =
+       .start =                dwc_otg_hcd_start,
+       //.suspend =            
+       //.resume =             
+       .stop =                 dwc_otg_hcd_stop,
+       .urb_enqueue =          dwc_otg_hcd_urb_enqueue,
+       .urb_dequeue =          dwc_otg_hcd_urb_dequeue,
+       .endpoint_disable =     dwc_otg_hcd_endpoint_disable,
+       .get_frame_number =     dwc_otg_hcd_get_frame_number,
+       .hub_status_data =      dwc_otg_hcd_hub_status_data,
+       .hub_control =          dwc_otg_hcd_hub_control,
+       //.hub_suspend =        
+       //.hub_resume =         
+};
+
+
+/**
+ * Work queue function for starting the HCD when A-Cable is connected.
+ * The dwc_otg_hcd_start() must be called in a process context.
+ */
+static void hcd_start_func(struct work_struct *work)
+{
+       struct dwc_otg_hcd *priv =
+               container_of(work, struct dwc_otg_hcd, start_work);
+       struct usb_hcd *usb_hcd = (struct usb_hcd *)priv->_p;
+       DWC_DEBUGPL(DBG_HCDV, "%s() %p\n", __func__, usb_hcd);
+       if (usb_hcd) {
+               dwc_otg_hcd_start(usb_hcd);
+       }
+}
+
+
+/**
+ * HCD Callback function for starting the HCD when A-Cable is
+ * connected.
+ *
+ * @param _p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_start_cb(void *_p)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(_p);
+       dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+       hprt0_data_t hprt0;
+       if (core_if->op_state == B_HOST) {
+               /* 
+                * Reset the port.  During a HNP mode switch the reset
+                * needs to occur within 1ms and have a duration of at
+                * least 50ms. 
+                */
+               hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+               hprt0.b.prtrst = 1;
+               dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+               ((struct usb_hcd *)_p)->self.is_b_host = 1;
+       } else {
+               ((struct usb_hcd *)_p)->self.is_b_host = 0;
+       }
+       /* Need to start the HCD in a non-interrupt context. */
+       INIT_WORK(&dwc_otg_hcd->start_work, hcd_start_func);
+       dwc_otg_hcd->_p = _p;
+       schedule_work(&dwc_otg_hcd->start_work);
+       return 1;
+}
+
+
+/**
+ * HCD Callback function for stopping the HCD.
+ *
+ * @param _p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_stop_cb( void *_p )
+{
+       struct usb_hcd *usb_hcd = (struct usb_hcd *)_p;
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, _p);
+       dwc_otg_hcd_stop( usb_hcd );
+       return 1;
+}
+static void del_xfer_timers(dwc_otg_hcd_t *_hcd)
+{
+#ifdef DEBUG
+       int i;
+       int num_channels = _hcd->core_if->core_params->host_channels;
+       for (i = 0; i < num_channels; i++) {
+               del_timer(&_hcd->core_if->hc_xfer_timer[i]);
+       }
+#endif /*  */
+}
+
+static void del_timers(dwc_otg_hcd_t *_hcd)
+{
+       del_xfer_timers(_hcd);
+       del_timer(&_hcd->conn_timer);
+}
+
+/**
+ * Processes all the URBs in a single list of QHs. Completes them with
+ * -ETIMEDOUT and frees the QTD.
+ */
+static void kill_urbs_in_qh_list(dwc_otg_hcd_t * _hcd,
+               struct list_head *_qh_list)
+{
+       struct list_head        *qh_item;
+       dwc_otg_qh_t            *qh;
+       struct list_head        *qtd_item;
+       dwc_otg_qtd_t           *qtd;
+
+       list_for_each(qh_item, _qh_list) {
+               qh = list_entry(qh_item, dwc_otg_qh_t, qh_list_entry);
+               for (qtd_item = qh->qtd_list.next; qtd_item != &qh->qtd_list;
+                               qtd_item = qh->qtd_list.next) {
+                       qtd = list_entry(qtd_item, dwc_otg_qtd_t, qtd_list_entry);
+                       if (qtd->urb != NULL) {
+                               dwc_otg_hcd_complete_urb(_hcd, qtd->urb,-ETIMEDOUT);
+                       }
+                       dwc_otg_hcd_qtd_remove_and_free(qtd);
+               }
+       }
+}
+
+/**
+ * Responds with an error status of ETIMEDOUT to all URBs in the non-periodic
+ * and periodic schedules. The QTD associated with each URB is removed from
+ * the schedule and freed. This function may be called when a disconnect is
+ * detected or when the HCD is being stopped.
+ */
+static void kill_all_urbs(dwc_otg_hcd_t *_hcd)
+{
+       kill_urbs_in_qh_list(_hcd, &_hcd->non_periodic_sched_deferred);
+       kill_urbs_in_qh_list(_hcd, &_hcd->non_periodic_sched_inactive);
+       kill_urbs_in_qh_list(_hcd, &_hcd->non_periodic_sched_active);
+       kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_inactive);
+       kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_ready);
+       kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_assigned);
+       kill_urbs_in_qh_list(_hcd, &_hcd->periodic_sched_queued);
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param _p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_disconnect_cb( void *_p )
+{
+       gintsts_data_t  intr;
+       dwc_otg_hcd_t   *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_p);
+
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, _p);
+
+       /* 
+        * Set status flags for the hub driver.
+        */
+       dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+       dwc_otg_hcd->flags.b.port_connect_status = 0;
+
+       /*
+        * Shutdown any transfers in process by clearing the Tx FIFO Empty
+        * interrupt mask and status bits and disabling subsequent host
+        * channel interrupts.
+        */
+       intr.d32 = 0;
+       intr.b.nptxfempty = 1;
+       intr.b.ptxfempty = 1;
+       intr.b.hcintr = 1;
+       dwc_modify_reg32 (&dwc_otg_hcd->core_if->core_global_regs->gintmsk, intr.d32, 0);
+       dwc_modify_reg32 (&dwc_otg_hcd->core_if->core_global_regs->gintsts, intr.d32, 0);
+
+       del_timers(dwc_otg_hcd);
+
+       /*
+        * Turn off the vbus power only if the core has transitioned to device
+        * mode. If still in host mode, need to keep power on to detect a
+        * reconnection.
+        */
+       if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) {
+               if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) {        
+                       hprt0_data_t hprt0 = { .d32=0 };
+                       DWC_PRINT("Disconnect: PortPower off\n");
+                       hprt0.b.prtpwr = 0;
+                       dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0.d32);
+               }
+
+               dwc_otg_disable_host_interrupts( dwc_otg_hcd->core_if );
+       }
+
+       /* Respond with an error status to all URBs in the schedule. */
+       kill_all_urbs(dwc_otg_hcd);
+
+       if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) {
+               /* Clean up any host channels that were in use. */
+               int                     num_channels;
+               int                     i;
+               dwc_hc_t                *channel;
+               dwc_otg_hc_regs_t       *hc_regs;
+               hcchar_data_t           hcchar;
+
+               num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
+
+               if (!dwc_otg_hcd->core_if->dma_enable) {
+                       /* Flush out any channel requests in slave mode. */
+                       for (i = 0; i < num_channels; i++) {
+                               channel = dwc_otg_hcd->hc_ptr_array[i];
+                               if (list_empty(&channel->hc_list_entry)) {
+                                       hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[i];
+                                       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+                                       if (hcchar.b.chen) {
+                                               hcchar.b.chen = 0;
+                                               hcchar.b.chdis = 1;
+                                               hcchar.b.epdir = 0;
+                                               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+                                       }
+                               }
+                       }
+               }
+
+               for (i = 0; i < num_channels; i++) {
+                       channel = dwc_otg_hcd->hc_ptr_array[i];
+                       if (list_empty(&channel->hc_list_entry)) {
+                               hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[i];
+                               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+                               if (hcchar.b.chen) {
+                                       /* Halt the channel. */
+                                       hcchar.b.chdis = 1;
+                                       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+                               }
+
+                               dwc_otg_hc_cleanup(dwc_otg_hcd->core_if, channel);
+                               list_add_tail(&channel->hc_list_entry,
+                                               &dwc_otg_hcd->free_hc_list);
+                       }
+               }
+       }
+
+       /* A disconnect will end the session so the B-Device is no
+        * longer a B-host. */
+       ((struct usb_hcd *)_p)->self.is_b_host = 0;
+
+       return 1;
+}
+
+/**
+ * Connection timeout function.  An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.
+ */
+void dwc_otg_hcd_connect_timeout( unsigned long _ptr )
+{
+       DWC_DEBUGPL(DBG_HCDV, "%s(%x)\n", __func__, (int)_ptr);
+       DWC_PRINT( "Connect Timeout\n");
+       DWC_ERROR( "Device Not Connected/Responding\n" );
+}
+
+/**
+ * Start the connection timer.  An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.  The
+ * timer is deleted if a port connect interrupt occurs before the
+ * timer expires.
+ */
+static void dwc_otg_hcd_start_connect_timer( dwc_otg_hcd_t *_hcd)
+{
+       init_timer( &_hcd->conn_timer );
+       _hcd->conn_timer.function = dwc_otg_hcd_connect_timeout;
+       _hcd->conn_timer.data = (unsigned long)0;
+       _hcd->conn_timer.expires = jiffies + (HZ*10);
+       add_timer( &_hcd->conn_timer );
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param _p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_session_start_cb( void *_p )
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_p);
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, _p);
+       dwc_otg_hcd_start_connect_timer( dwc_otg_hcd );
+       return 1;
+}
+
+/**
+ * HCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t hcd_cil_callbacks = {
+       .start = dwc_otg_hcd_start_cb,
+       .stop = dwc_otg_hcd_stop_cb,
+       .disconnect = dwc_otg_hcd_disconnect_cb,
+       .session_start = dwc_otg_hcd_session_start_cb,
+       .p = 0,
+};
+
+
+/**
+ * Reset tasklet function
+ */
+static void reset_tasklet_func (unsigned long data)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t*)data;
+       dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+       hprt0_data_t hprt0;
+
+       DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n");
+
+       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+       hprt0.b.prtrst = 1;
+       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+       mdelay (60);
+
+       hprt0.b.prtrst = 0;
+       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+       dwc_otg_hcd->flags.b.port_reset_change = 1;     
+
+       return;
+}
+
+static struct tasklet_struct reset_tasklet = { 
+       .next = NULL,
+       .state = 0,
+       .count = ATOMIC_INIT(0),
+       .func = reset_tasklet_func,
+       .data = 0,
+};
+
+/**
+ * Initializes the HCD. This function allocates memory for and initializes the
+ * static parts of the usb_hcd and dwc_otg_hcd structures. It also registers the
+ * USB bus with the core and calls the hc_driver->start() function. It returns
+ * a negative error on failure.
+ */
+int init_hcd_usecs(dwc_otg_hcd_t *_hcd);
+
+int  __devinit  dwc_otg_hcd_init(struct device *_dev, dwc_otg_device_t * dwc_otg_device)
+{
+       struct usb_hcd *hcd = NULL;
+       dwc_otg_hcd_t *dwc_otg_hcd = NULL;
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+       int             num_channels;
+       int             i;
+       dwc_hc_t        *channel;
+
+       int retval = 0;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD INIT\n");
+
+       /*
+        * Allocate memory for the base HCD plus the DWC OTG HCD.
+        * Initialize the base HCD.
+        */
+       hcd = usb_create_hcd(&dwc_otg_hc_driver, _dev, dev_name(_dev));
+       if (hcd == NULL) {
+               retval = -ENOMEM;
+               goto error1;
+       }
+       dev_set_drvdata(_dev, dwc_otg_device); /* fscz restore */
+       hcd->regs = otg_dev->base;
+       hcd->rsrc_start = (int)otg_dev->base;
+
+       hcd->self.otg_port = 1;  
+
+       /* Initialize the DWC OTG HCD. */
+       dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+       dwc_otg_hcd->core_if = otg_dev->core_if;
+       otg_dev->hcd = dwc_otg_hcd;
+
+       /* Register the HCD CIL Callbacks */
+       dwc_otg_cil_register_hcd_callbacks(otg_dev->core_if, 
+                       &hcd_cil_callbacks, hcd);
+
+       /* Initialize the non-periodic schedule. */
+       INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_inactive);
+       INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_active);
+       INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_deferred);
+
+       /* Initialize the periodic schedule. */
+       INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_inactive);
+       INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_ready);
+       INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_assigned);
+       INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_queued);
+
+       /*
+        * Create a host channel descriptor for each host channel implemented
+        * in the controller. Initialize the channel descriptor array.
+        */
+       INIT_LIST_HEAD(&dwc_otg_hcd->free_hc_list);
+       num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
+       for (i = 0; i < num_channels; i++) {
+               channel = kmalloc(sizeof(dwc_hc_t), GFP_KERNEL);
+               if (channel == NULL) {
+                       retval = -ENOMEM;
+                       DWC_ERROR("%s: host channel allocation failed\n", __func__);
+                       goto error2;
+               }
+               memset(channel, 0, sizeof(dwc_hc_t));
+               channel->hc_num = i;
+               dwc_otg_hcd->hc_ptr_array[i] = channel;
+#ifdef DEBUG
+               init_timer(&dwc_otg_hcd->core_if->hc_xfer_timer[i]);
+#endif         
+
+               DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i, channel);
+       }
+
+       /* Initialize the Connection timeout timer. */
+       init_timer( &dwc_otg_hcd->conn_timer );
+
+       /* Initialize reset tasklet. */
+       reset_tasklet.data = (unsigned long) dwc_otg_hcd;
+       dwc_otg_hcd->reset_tasklet = &reset_tasklet;
+
+       /* Set device flags indicating whether the HCD supports DMA. */
+       if (otg_dev->core_if->dma_enable) {
+               DWC_PRINT("Using DMA mode\n");
+               //_dev->dma_mask = (void *)~0;
+               //_dev->coherent_dma_mask = ~0;
+               _dev->dma_mask = &dma_mask;
+               _dev->coherent_dma_mask = DMA_BIT_MASK(32);
+       } else {
+               DWC_PRINT("Using Slave mode\n");
+               _dev->dma_mask = (void *)0;
+               _dev->coherent_dma_mask = 0;
+       }
+
+       init_hcd_usecs(dwc_otg_hcd);
+       /*
+        * Finish generic HCD initialization and start the HCD. This function
+        * allocates the DMA buffer pool, registers the USB bus, requests the
+        * IRQ line, and calls dwc_otg_hcd_start method.
+        */
+       retval = usb_add_hcd(hcd, otg_dev->irq, IRQF_SHARED);
+       if (retval < 0) {
+               goto error2;
+       }
+
+       /*
+        * Allocate space for storing data on status transactions. Normally no
+        * data is sent, but this space acts as a bit bucket. This must be
+        * done after usb_add_hcd since that function allocates the DMA buffer
+        * pool.
+        */
+       if (otg_dev->core_if->dma_enable) {
+               dwc_otg_hcd->status_buf =
+                       dma_alloc_coherent(_dev,
+                                       DWC_OTG_HCD_STATUS_BUF_SIZE,
+                                       &dwc_otg_hcd->status_buf_dma,
+                                       GFP_KERNEL | GFP_DMA);
+       } else {
+               dwc_otg_hcd->status_buf = kmalloc(DWC_OTG_HCD_STATUS_BUF_SIZE,
+                               GFP_KERNEL);
+       }
+       if (dwc_otg_hcd->status_buf == NULL) {
+               retval = -ENOMEM;
+               DWC_ERROR("%s: status_buf allocation failed\n", __func__);
+               goto error3;
+       }
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Initialized HCD, bus=%s, usbbus=%d\n", 
+                       dev_name(_dev), hcd->self.busnum);
+
+       return 0;
+
+       /* Error conditions */
+error3:
+       usb_remove_hcd(hcd);
+error2:
+       dwc_otg_hcd_free(hcd);
+       usb_put_hcd(hcd);
+error1:
+       return retval;
+}
+
+/**
+ * Removes the HCD.
+ * Frees memory and resources associated with the HCD and deregisters the bus.
+ */
+void dwc_otg_hcd_remove(struct device *_dev)
+{
+       dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+       dwc_otg_hcd_t *dwc_otg_hcd = otg_dev->hcd;
+       struct usb_hcd *hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd);
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD REMOVE\n");
+
+       /* Turn off all interrupts */
+       dwc_write_reg32 (&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0);
+       dwc_modify_reg32 (&dwc_otg_hcd->core_if->core_global_regs->gahbcfg, 1, 0);
+
+       usb_remove_hcd(hcd);
+
+       dwc_otg_hcd_free(hcd);
+
+       usb_put_hcd(hcd);
+
+       return;
+}
+
+
+/* =========================================================================
+ *  Linux HC Driver Functions
+ * ========================================================================= */
+
+/**
+ * Initializes dynamic portions of the DWC_otg HCD state.
+ */
+static void hcd_reinit(dwc_otg_hcd_t *_hcd)
+{
+       struct list_head        *item;
+       int                     num_channels;
+       int                     i;
+       dwc_hc_t                *channel;
+
+       _hcd->flags.d32 = 0;
+
+       _hcd->non_periodic_qh_ptr = &_hcd->non_periodic_sched_active;
+       _hcd->available_host_channels = _hcd->core_if->core_params->host_channels;
+
+       /*
+        * Put all channels in the free channel list and clean up channel
+        * states.
+        */
+       item = _hcd->free_hc_list.next;
+       while (item != &_hcd->free_hc_list) {
+               list_del(item);
+               item = _hcd->free_hc_list.next;
+       }
+       num_channels = _hcd->core_if->core_params->host_channels;
+       for (i = 0; i < num_channels; i++) {
+               channel = _hcd->hc_ptr_array[i];
+               list_add_tail(&channel->hc_list_entry, &_hcd->free_hc_list);
+               dwc_otg_hc_cleanup(_hcd->core_if, channel);
+       }
+
+       /* Initialize the DWC core for host mode operation. */
+       dwc_otg_core_host_init(_hcd->core_if);
+}
+
+/** Initializes the DWC_otg controller and its root hub and prepares it for host
+ * mode operation. Activates the root port. Returns 0 on success and a negative
+ * error code on failure. */
+int dwc_otg_hcd_start(struct usb_hcd *_hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_hcd);
+       dwc_otg_core_if_t * core_if = dwc_otg_hcd->core_if;
+       struct usb_bus *bus;
+
+       //      int retval;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD START\n");
+
+       bus = hcd_to_bus(_hcd);
+
+       /* Initialize the bus state.  If the core is in Device Mode
+        * HALT the USB bus and return. */
+       if (dwc_otg_is_device_mode (core_if)) {
+               _hcd->state = HC_STATE_HALT;
+               return 0;
+       }
+       _hcd->state = HC_STATE_RUNNING;
+
+       /* Initialize and connect root hub if one is not already attached */
+       if (bus->root_hub) {
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Has Root Hub\n");
+               /* Inform the HUB driver to resume. */
+               usb_hcd_resume_root_hub(_hcd);
+       }
+       else {
+#if 0
+               struct usb_device *udev;
+               udev = usb_alloc_dev(NULL, bus, 0);
+               if (!udev) {
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error udev alloc\n");
+                       return -ENODEV;
+               }
+               udev->speed = USB_SPEED_HIGH;
+               /* Not needed - VJ
+                  if ((retval = usb_hcd_register_root_hub(udev, _hcd)) != 0) {
+                  DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error registering %d\n", retval);
+                  return -ENODEV;
+                  }
+                  */
+#else
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error udev alloc\n");
+#endif
+       }
+
+       hcd_reinit(dwc_otg_hcd);
+
+       return 0;
+}
+
+static void qh_list_free(dwc_otg_hcd_t *_hcd, struct list_head *_qh_list)
+{
+       struct list_head        *item;
+       dwc_otg_qh_t            *qh;
+
+       if (_qh_list->next == NULL) {
+               /* The list hasn't been initialized yet. */
+               return;
+       }
+
+       /* Ensure there are no QTDs or URBs left. */
+       kill_urbs_in_qh_list(_hcd, _qh_list);
+
+       for (item = _qh_list->next; item != _qh_list; item = _qh_list->next) {
+               qh = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+               dwc_otg_hcd_qh_remove_and_free(_hcd, qh);
+       }
+}
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ */
+void dwc_otg_hcd_stop(struct usb_hcd *_hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_hcd);
+       hprt0_data_t hprt0 = { .d32=0 };
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
+
+       /* Turn off all host-specific interrupts. */
+       dwc_otg_disable_host_interrupts( dwc_otg_hcd->core_if );
+
+       /*
+        * The root hub should be disconnected before this function is called.
+        * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue)
+        * and the QH lists (via ..._hcd_endpoint_disable).
+        */
+
+       /* Turn off the vbus power */
+       DWC_PRINT("PortPower off\n");
+       hprt0.b.prtpwr = 0;
+       dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0.d32);
+
+       return;
+}
+
+
+/** Returns the current frame number. */
+int dwc_otg_hcd_get_frame_number(struct usb_hcd *_hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd);
+       hfnum_data_t hfnum;
+
+       hfnum.d32 = dwc_read_reg32(&dwc_otg_hcd->core_if->
+                       host_if->host_global_regs->hfnum);
+
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n", hfnum.b.frnum);
+#endif 
+       return hfnum.b.frnum;
+}
+
+/**
+ * Frees secondary storage associated with the dwc_otg_hcd structure contained
+ * in the struct usb_hcd field.
+ */
+void dwc_otg_hcd_free(struct usb_hcd *_hcd)
+{
+       dwc_otg_hcd_t   *dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd);
+       int             i;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n");
+
+       del_timers(dwc_otg_hcd);
+
+       /* Free memory for QH/QTD lists */
+       qh_list_free(dwc_otg_hcd,       &dwc_otg_hcd->non_periodic_sched_inactive);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_deferred);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned);
+       qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued);
+
+       /* Free memory for the host channels. */
+       for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+               dwc_hc_t *hc = dwc_otg_hcd->hc_ptr_array[i];
+               if (hc != NULL) {
+                       DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n", i, hc);
+                       kfree(hc);
+               }
+       }
+
+       if (dwc_otg_hcd->core_if->dma_enable) {
+               if (dwc_otg_hcd->status_buf_dma) {
+                       dma_free_coherent(_hcd->self.controller,
+                                       DWC_OTG_HCD_STATUS_BUF_SIZE,
+                                       dwc_otg_hcd->status_buf,
+                                       dwc_otg_hcd->status_buf_dma);
+               }
+       } else if (dwc_otg_hcd->status_buf != NULL) {
+               kfree(dwc_otg_hcd->status_buf);
+       }
+
+       return;
+}
+
+
+#ifdef DEBUG
+static void dump_urb_info(struct urb *_urb, char* _fn_name)
+{
+       DWC_PRINT("%s, urb %p\n", _fn_name, _urb);
+       DWC_PRINT("  Device address: %d\n", usb_pipedevice(_urb->pipe));
+       DWC_PRINT("  Endpoint: %d, %s\n", usb_pipeendpoint(_urb->pipe),
+                       (usb_pipein(_urb->pipe) ? "IN" : "OUT"));
+       DWC_PRINT("  Endpoint type: %s\n",
+                       ({char *pipetype;
+                        switch (usb_pipetype(_urb->pipe)) {
+                        case PIPE_CONTROL: pipetype = "CONTROL"; break;
+                        case PIPE_BULK: pipetype = "BULK"; break;
+                        case PIPE_INTERRUPT: pipetype = "INTERRUPT"; break;
+                        case PIPE_ISOCHRONOUS: pipetype = "ISOCHRONOUS"; break;
+                        default: pipetype = "UNKNOWN"; break;
+                        }; pipetype;}));
+       DWC_PRINT("  Speed: %s\n",
+                       ({char *speed;
+                        switch (_urb->dev->speed) {
+                        case USB_SPEED_HIGH: speed = "HIGH"; break;
+                        case USB_SPEED_FULL: speed = "FULL"; break;
+                        case USB_SPEED_LOW: speed = "LOW"; break;
+                        default: speed = "UNKNOWN"; break;
+                        }; speed;}));
+       DWC_PRINT("  Max packet size: %d\n",
+                       usb_maxpacket(_urb->dev, _urb->pipe, usb_pipeout(_urb->pipe)));
+       DWC_PRINT("  Data buffer length: %d\n", _urb->transfer_buffer_length);
+       DWC_PRINT("  Transfer buffer: %p, Transfer DMA: %p\n",
+                       _urb->transfer_buffer, (void *)_urb->transfer_dma);
+       DWC_PRINT("  Setup buffer: %p, Setup DMA: %p\n",
+                       _urb->setup_packet, (void *)_urb->setup_dma);
+       DWC_PRINT("  Interval: %d\n", _urb->interval);
+       if (usb_pipetype(_urb->pipe) == PIPE_ISOCHRONOUS) {
+               int i;
+               for (i = 0; i < _urb->number_of_packets;  i++) {
+                       DWC_PRINT("  ISO Desc %d:\n", i);
+                       DWC_PRINT("    offset: %d, length %d\n",
+                                       _urb->iso_frame_desc[i].offset,
+                                       _urb->iso_frame_desc[i].length);
+               }
+       }
+}
+
+static void dump_channel_info(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *qh)
+{
+       if (qh->channel != NULL) {
+               dwc_hc_t *hc = qh->channel;
+               struct list_head *item;
+               dwc_otg_qh_t *qh_item;
+               int num_channels = _hcd->core_if->core_params->host_channels;
+               int i;
+
+               dwc_otg_hc_regs_t *hc_regs;
+               hcchar_data_t   hcchar;
+               hcsplt_data_t   hcsplt;
+               hctsiz_data_t   hctsiz;
+               uint32_t        hcdma;
+
+               hc_regs = _hcd->core_if->host_if->hc_regs[hc->hc_num];
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               hcsplt.d32 = dwc_read_reg32(&hc_regs->hcsplt);
+               hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+               hcdma = dwc_read_reg32(&hc_regs->hcdma);
+
+               DWC_PRINT("  Assigned to channel %p:\n", hc);
+               DWC_PRINT("    hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
+               DWC_PRINT("    hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
+               DWC_PRINT("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+                               hc->dev_addr, hc->ep_num, hc->ep_is_in);
+               DWC_PRINT("    ep_type: %d\n", hc->ep_type);
+               DWC_PRINT("    max_packet: %d\n", hc->max_packet);
+               DWC_PRINT("    data_pid_start: %d\n", hc->data_pid_start);
+               DWC_PRINT("    xfer_started: %d\n", hc->xfer_started);
+               DWC_PRINT("    halt_status: %d\n", hc->halt_status);
+               DWC_PRINT("    xfer_buff: %p\n", hc->xfer_buff);
+               DWC_PRINT("    xfer_len: %d\n", hc->xfer_len);
+               DWC_PRINT("    qh: %p\n", hc->qh);
+               DWC_PRINT("  NP inactive sched:\n");
+               list_for_each(item, &_hcd->non_periodic_sched_inactive) {
+                       qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+                       DWC_PRINT("    %p\n", qh_item);
+               } DWC_PRINT("  NP active sched:\n");
+               list_for_each(item, &_hcd->non_periodic_sched_deferred) {
+                       qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+                       DWC_PRINT("    %p\n", qh_item);
+               } DWC_PRINT("  NP deferred sched:\n");
+               list_for_each(item, &_hcd->non_periodic_sched_active) {
+                       qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+                       DWC_PRINT("    %p\n", qh_item);
+               } DWC_PRINT("  Channels: \n");
+               for (i = 0; i < num_channels; i++) {
+                       dwc_hc_t *hc = _hcd->hc_ptr_array[i];
+                       DWC_PRINT("    %2d: %p\n", i, hc);
+               }
+       }
+}
+#endif // DEBUG
+
+/** Starts processing a USB transfer request specified by a USB Request Block
+ * (URB). mem_flags indicates the type of memory allocation to use while
+ * processing this URB. */
+int dwc_otg_hcd_urb_enqueue(struct usb_hcd *_hcd, 
+               struct urb *_urb, 
+               gfp_t _mem_flags)
+{
+       unsigned long flags;
+       int retval;
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_hcd);
+       dwc_otg_qtd_t *qtd;
+
+       local_irq_save(flags);
+       retval = usb_hcd_link_urb_to_ep(_hcd, _urb);
+       if (retval) {
+               local_irq_restore(flags);
+               return retval;
+       }
+#ifdef DEBUG
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               dump_urb_info(_urb, "dwc_otg_hcd_urb_enqueue");
+       }
+#endif // DEBUG
+       if (!dwc_otg_hcd->flags.b.port_connect_status) {
+               /* No longer connected. */
+               local_irq_restore(flags);
+               return -ENODEV;
+       }
+
+       qtd = dwc_otg_hcd_qtd_create (_urb);
+       if (qtd == NULL) {
+               local_irq_restore(flags);
+               DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n");
+               return -ENOMEM;
+       }
+
+       retval = dwc_otg_hcd_qtd_add (qtd, dwc_otg_hcd);
+       if (retval < 0) {
+               DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. "
+                               "Error status %d\n", retval);
+               dwc_otg_hcd_qtd_free(qtd);
+       }
+
+       local_irq_restore (flags);
+       return retval;
+}
+
+/** Aborts/cancels a USB transfer request. Always returns 0 to indicate
+ * success.  */
+int dwc_otg_hcd_urb_dequeue(struct usb_hcd *_hcd, struct urb *_urb, int _status)
+{
+       unsigned long flags;
+       dwc_otg_hcd_t *dwc_otg_hcd;
+       dwc_otg_qtd_t *urb_qtd;
+       dwc_otg_qh_t *qh;
+       int retval;
+       //struct usb_host_endpoint *_ep = NULL;
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue\n");
+
+       local_irq_save(flags);
+
+       retval = usb_hcd_check_unlink_urb(_hcd, _urb, _status);
+       if (retval) {
+               local_irq_restore(flags);
+               return retval;
+       }
+
+       dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd);
+       urb_qtd = (dwc_otg_qtd_t *)_urb->hcpriv;
+       if (urb_qtd == NULL) {
+               printk("urb_qtd is NULL for _urb %08x\n",(unsigned)_urb);
+               goto done;
+       }
+       qh = (dwc_otg_qh_t *) urb_qtd->qtd_qh_ptr;
+       if (qh == NULL) {
+               goto done;
+       }
+
+#ifdef DEBUG
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               dump_urb_info(_urb, "dwc_otg_hcd_urb_dequeue");
+               if (urb_qtd == qh->qtd_in_process) {
+                       dump_channel_info(dwc_otg_hcd, qh);
+               }
+       }
+#endif // DEBUG
+
+       if (urb_qtd == qh->qtd_in_process) {
+               /* The QTD is in process (it has been assigned to a channel). */
+
+               if (dwc_otg_hcd->flags.b.port_connect_status) {
+                       /*
+                        * If still connected (i.e. in host mode), halt the
+                        * channel so it can be used for other transfers. If
+                        * no longer connected, the host registers can't be
+                        * written to halt the channel since the core is in
+                        * device mode.
+                        */
+                       dwc_otg_hc_halt(dwc_otg_hcd->core_if, qh->channel,
+                                       DWC_OTG_HC_XFER_URB_DEQUEUE);
+               }
+       }
+
+       /*
+        * Free the QTD and clean up the associated QH. Leave the QH in the
+        * schedule if it has any remaining QTDs.
+        */
+       dwc_otg_hcd_qtd_remove_and_free(urb_qtd);
+       if (urb_qtd == qh->qtd_in_process) {
+               dwc_otg_hcd_qh_deactivate(dwc_otg_hcd, qh, 0);
+               qh->channel = NULL;
+               qh->qtd_in_process = NULL;
+       } else if (list_empty(&qh->qtd_list)) {
+               dwc_otg_hcd_qh_remove(dwc_otg_hcd, qh);
+       }
+
+done:
+       local_irq_restore(flags);
+       _urb->hcpriv = NULL;
+
+       /* Higher layer software sets URB status. */
+       usb_hcd_unlink_urb_from_ep(_hcd, _urb);
+       usb_hcd_giveback_urb(_hcd, _urb, _status);
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               DWC_PRINT("Called usb_hcd_giveback_urb()\n");
+               DWC_PRINT("  urb->status = %d\n", _urb->status);
+       }
+
+       return 0;
+}
+
+
+/** Frees resources in the DWC_otg controller related to a given endpoint. Also
+ * clears state in the HCD related to the endpoint. Any URBs for the endpoint
+ * must already be dequeued. */
+void dwc_otg_hcd_endpoint_disable(struct usb_hcd *_hcd,
+               struct usb_host_endpoint *_ep)
+
+{
+       dwc_otg_qh_t *qh;
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(_hcd);
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP DISABLE: _bEndpointAddress=0x%02x, "
+                       "endpoint=%d\n", _ep->desc.bEndpointAddress,
+                       dwc_ep_addr_to_endpoint(_ep->desc.bEndpointAddress));
+
+       qh = (dwc_otg_qh_t *)(_ep->hcpriv);
+       if (qh != NULL) {
+#ifdef DEBUG
+               /** Check that the QTD list is really empty */
+               if (!list_empty(&qh->qtd_list)) {
+                       DWC_WARN("DWC OTG HCD EP DISABLE:"
+                                       " QTD List for this endpoint is not empty\n");
+               }
+#endif // DEBUG
+
+               dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd, qh);
+               _ep->hcpriv = NULL;
+       }
+
+       return;
+}
+extern int dwc_irq;
+/** Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if
+ * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid
+ * interrupt.
+ *
+ * This function is called by the USB core when an interrupt occurs */
+irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *_hcd)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_hcd);
+
+       mask_and_ack_ifx_irq (dwc_irq);
+       return IRQ_RETVAL(dwc_otg_hcd_handle_intr(dwc_otg_hcd));
+}
+
+/** Creates Status Change bitmap for the root hub and root port. The bitmap is
+ * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1
+ * is the status change indicator for the single root port. Returns 1 if either
+ * change indicator is 1, otherwise returns 0. */
+int dwc_otg_hcd_hub_status_data(struct usb_hcd *_hcd, char *_buf)
+{
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_hcd);
+
+       _buf[0] = 0;
+       _buf[0] |= (dwc_otg_hcd->flags.b.port_connect_status_change ||
+                       dwc_otg_hcd->flags.b.port_reset_change ||
+                       dwc_otg_hcd->flags.b.port_enable_change ||
+                       dwc_otg_hcd->flags.b.port_suspend_change ||
+                       dwc_otg_hcd->flags.b.port_over_current_change) << 1;
+
+#ifdef DEBUG
+       if (_buf[0]) {
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:"
+                               " Root port status changed\n");
+               DWC_DEBUGPL(DBG_HCDV, "  port_connect_status_change: %d\n",
+                               dwc_otg_hcd->flags.b.port_connect_status_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_reset_change: %d\n",
+                               dwc_otg_hcd->flags.b.port_reset_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_enable_change: %d\n",
+                               dwc_otg_hcd->flags.b.port_enable_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_suspend_change: %d\n",
+                               dwc_otg_hcd->flags.b.port_suspend_change);
+               DWC_DEBUGPL(DBG_HCDV, "  port_over_current_change: %d\n",
+                               dwc_otg_hcd->flags.b.port_over_current_change);
+       }
+#endif // DEBUG
+       return (_buf[0] != 0);
+}
+
+#ifdef DWC_HS_ELECT_TST
+/*
+ * Quick and dirty hack to implement the HS Electrical Test
+ * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
+ *
+ * This code was copied from our userspace app "hset". It sends a
+ * Get Device Descriptor control sequence in two parts, first the
+ * Setup packet by itself, followed some time later by the In and
+ * Ack packets. Rather than trying to figure out how to add this
+ * functionality to the normal driver code, we just hijack the
+ * hardware, using these two function to drive the hardware
+ * directly.
+ */
+
+dwc_otg_core_global_regs_t *global_regs;
+dwc_otg_host_global_regs_t *hc_global_regs;
+dwc_otg_hc_regs_t *hc_regs;
+uint32_t *data_fifo;
+
+static void do_setup(void)
+{
+       gintsts_data_t gintsts;
+       hctsiz_data_t hctsiz;
+       hcchar_data_t hcchar;
+       haint_data_t haint;
+       hcint_data_t hcint;
+
+       /* Enable HAINTs */
+       dwc_write_reg32(&hc_global_regs->haintmsk, 0x0001);
+
+       /* Enable HCINTs */
+       dwc_write_reg32(&hc_regs->hcintmsk, 0x04a3);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+       /* Read HAINT */
+       haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+       //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+       /* Read HCINT */
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+       /* Read HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+       /* Clear HCINT */
+       dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+       /*
+        * Send Setup packet (Get Device Descriptor)
+        */
+
+       /* Make sure channel is disabled */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       if (hcchar.b.chen) {
+               //fprintf(stderr, "Channel already enabled 1, HCCHAR = %08x\n", hcchar.d32);
+               hcchar.b.chdis = 1;
+               //              hcchar.b.chen = 1;
+               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+               //sleep(1);
+               MDELAY(1000);
+
+               /* Read GINTSTS */
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+               //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+               /* Read HAINT */
+               haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+               //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+               /* Read HCINT */
+               hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+               //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+               /* Read HCCHAR */
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+               /* Clear HCINT */
+               dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+               /* Clear HAINT */
+               dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+               /* Clear GINTSTS */
+               dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               //if (hcchar.b.chen) {
+               //      fprintf(stderr, "** Channel _still_ enabled 1, HCCHAR = %08x **\n", hcchar.d32);
+               //}
+       }
+
+       /* Set HCTSIZ */
+       hctsiz.d32 = 0;
+       hctsiz.b.xfersize = 8;
+       hctsiz.b.pktcnt = 1;
+       hctsiz.b.pid = DWC_OTG_HC_PID_SETUP;
+       dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+       /* Set HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.epdir = 0;
+       hcchar.b.epnum = 0;
+       hcchar.b.mps = 8;
+       hcchar.b.chen = 1;
+       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+       /* Fill FIFO with Setup data for Get Device Descriptor */
+       data_fifo = (uint32_t *)((char *)global_regs + 0x1000);
+       dwc_write_reg32(data_fifo++, 0x01000680);
+       dwc_write_reg32(data_fifo++, 0x00080000);
+
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "Waiting for HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Wait for host channel interrupt */
+       do {
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       } while (gintsts.b.hcintr == 0);
+
+       //fprintf(stderr, "Got HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Disable HCINTs */
+       dwc_write_reg32(&hc_regs->hcintmsk, 0x0000);
+
+       /* Disable HAINTs */
+       dwc_write_reg32(&hc_global_regs->haintmsk, 0x0000);
+
+       /* Read HAINT */
+       haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+       //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+       /* Read HCINT */
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+       /* Read HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+       /* Clear HCINT */
+       dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+}
+
+static void do_in_ack(void)
+{
+       gintsts_data_t gintsts;
+       hctsiz_data_t hctsiz;
+       hcchar_data_t hcchar;
+       haint_data_t haint;
+       hcint_data_t hcint;
+       host_grxsts_data_t grxsts;
+
+       /* Enable HAINTs */
+       dwc_write_reg32(&hc_global_regs->haintmsk, 0x0001);
+
+       /* Enable HCINTs */
+       dwc_write_reg32(&hc_regs->hcintmsk, 0x04a3);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+       /* Read HAINT */
+       haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+       //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+       /* Read HCINT */
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+       /* Read HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+       /* Clear HCINT */
+       dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+       /*
+        * Receive Control In packet
+        */
+
+       /* Make sure channel is disabled */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       if (hcchar.b.chen) {
+               //fprintf(stderr, "Channel already enabled 2, HCCHAR = %08x\n", hcchar.d32);
+               hcchar.b.chdis = 1;
+               hcchar.b.chen = 1;
+               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+               //sleep(1);
+               MDELAY(1000);
+
+               /* Read GINTSTS */
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+               //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+               /* Read HAINT */
+               haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+               //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+               /* Read HCINT */
+               hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+               //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+               /* Read HCCHAR */
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+               /* Clear HCINT */
+               dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+               /* Clear HAINT */
+               dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+               /* Clear GINTSTS */
+               dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               //if (hcchar.b.chen) {
+               //      fprintf(stderr, "** Channel _still_ enabled 2, HCCHAR = %08x **\n", hcchar.d32);
+               //}
+       }
+
+       /* Set HCTSIZ */
+       hctsiz.d32 = 0;
+       hctsiz.b.xfersize = 8;
+       hctsiz.b.pktcnt = 1;
+       hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+       dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+       /* Set HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.epdir = 1;
+       hcchar.b.epnum = 0;
+       hcchar.b.mps = 8;
+       hcchar.b.chen = 1;
+       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "Waiting for RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Wait for receive status queue interrupt */
+       do {
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       } while (gintsts.b.rxstsqlvl == 0);
+
+       //fprintf(stderr, "Got RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Read RXSTS */
+       grxsts.d32 = dwc_read_reg32(&global_regs->grxstsp);
+       //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32);
+
+       /* Clear RXSTSQLVL in GINTSTS */
+       gintsts.d32 = 0;
+       gintsts.b.rxstsqlvl = 1;
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       switch (grxsts.b.pktsts) {
+               case DWC_GRXSTS_PKTSTS_IN:
+                       /* Read the data into the host buffer */
+                       if (grxsts.b.bcnt > 0) {
+                               int i;
+                               int word_count = (grxsts.b.bcnt + 3) / 4;
+
+                               data_fifo = (uint32_t *)((char *)global_regs + 0x1000);
+
+                               for (i = 0; i < word_count; i++) {
+                                       (void)dwc_read_reg32(data_fifo++);
+                               }
+                       }
+
+                       //fprintf(stderr, "Received %u bytes\n", (unsigned)grxsts.b.bcnt);
+                       break;
+
+               default:
+                       //fprintf(stderr, "** Unexpected GRXSTS packet status 1 **\n");
+                       break;
+       }
+
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "Waiting for RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Wait for receive status queue interrupt */
+       do {
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       } while (gintsts.b.rxstsqlvl == 0);
+
+       //fprintf(stderr, "Got RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Read RXSTS */
+       grxsts.d32 = dwc_read_reg32(&global_regs->grxstsp);
+       //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32);
+
+       /* Clear RXSTSQLVL in GINTSTS */
+       gintsts.d32 = 0;
+       gintsts.b.rxstsqlvl = 1;
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       switch (grxsts.b.pktsts) {
+               case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+                       break;
+
+               default:
+                       //fprintf(stderr, "** Unexpected GRXSTS packet status 2 **\n");
+                       break;
+       }
+
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "Waiting for HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Wait for host channel interrupt */
+       do {
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       } while (gintsts.b.hcintr == 0);
+
+       //fprintf(stderr, "Got HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Read HAINT */
+       haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+       //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+       /* Read HCINT */
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+       /* Read HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+       /* Clear HCINT */
+       dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+       //      usleep(100000);
+       //      mdelay(100);
+       MDELAY(1);
+
+       /*
+        * Send handshake packet
+        */
+
+       /* Read HAINT */
+       haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+       //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+       /* Read HCINT */
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+       /* Read HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+       /* Clear HCINT */
+       dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+       /* Make sure channel is disabled */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       if (hcchar.b.chen) {
+               //fprintf(stderr, "Channel already enabled 3, HCCHAR = %08x\n", hcchar.d32);
+               hcchar.b.chdis = 1;
+               hcchar.b.chen = 1;
+               dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+               //sleep(1);
+               MDELAY(1000);
+
+               /* Read GINTSTS */
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+               //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+               /* Read HAINT */
+               haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+               //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+               /* Read HCINT */
+               hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+               //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+               /* Read HCCHAR */
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+               /* Clear HCINT */
+               dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+               /* Clear HAINT */
+               dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+               /* Clear GINTSTS */
+               dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+               hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+               //if (hcchar.b.chen) {
+               //      fprintf(stderr, "** Channel _still_ enabled 3, HCCHAR = %08x **\n", hcchar.d32);
+               //}
+       }
+
+       /* Set HCTSIZ */
+       hctsiz.d32 = 0;
+       hctsiz.b.xfersize = 0;
+       hctsiz.b.pktcnt = 1;
+       hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+       dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+       /* Set HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+       hcchar.b.epdir = 0;
+       hcchar.b.epnum = 0;
+       hcchar.b.mps = 8;
+       hcchar.b.chen = 1;
+       dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "Waiting for HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Wait for host channel interrupt */
+       do {
+               gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       } while (gintsts.b.hcintr == 0);
+
+       //fprintf(stderr, "Got HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32);
+
+       /* Disable HCINTs */
+       dwc_write_reg32(&hc_regs->hcintmsk, 0x0000);
+
+       /* Disable HAINTs */
+       dwc_write_reg32(&hc_global_regs->haintmsk, 0x0000);
+
+       /* Read HAINT */
+       haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+       //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+       /* Read HCINT */
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+       /* Read HCCHAR */
+       hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+       //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+       /* Clear HCINT */
+       dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+       /* Clear HAINT */
+       dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+       /* Clear GINTSTS */
+       dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+       /* Read GINTSTS */
+       gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+       //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+}
+#endif /* DWC_HS_ELECT_TST */
+
+/** Handles hub class-specific requests.*/
+int dwc_otg_hcd_hub_control(struct usb_hcd *_hcd, 
+               u16 _typeReq, 
+               u16 _wValue, 
+               u16 _wIndex, 
+               char *_buf, 
+               u16 _wLength)
+{
+       int retval = 0;
+
+       dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd (_hcd);
+       dwc_otg_core_if_t *core_if = hcd_to_dwc_otg_hcd (_hcd)->core_if;
+       struct usb_hub_descriptor *desc;
+       hprt0_data_t hprt0 = {.d32 = 0};
+
+       uint32_t port_status;
+
+       switch (_typeReq) {
+               case ClearHubFeature:
+                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                       "ClearHubFeature 0x%x\n", _wValue);
+                       switch (_wValue) {
+                               case C_HUB_LOCAL_POWER:
+                               case C_HUB_OVER_CURRENT:
+                                       /* Nothing required here */
+                                       break;
+                               default:
+                                       retval = -EINVAL;
+                                       DWC_ERROR ("DWC OTG HCD - "
+                                                       "ClearHubFeature request %xh unknown\n", _wValue);
+                       }
+                       break;
+               case ClearPortFeature:
+                       if (!_wIndex || _wIndex > 1)
+                               goto error;
+
+                       switch (_wValue) {
+                               case USB_PORT_FEAT_ENABLE:
+                                       DWC_DEBUGPL (DBG_ANY, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_ENABLE\n");
+                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                       hprt0.b.prtena = 1;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       break;
+                               case USB_PORT_FEAT_SUSPEND:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
+                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                       hprt0.b.prtres = 1;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       /* Clear Resume bit */
+                                       mdelay (100);
+                                       hprt0.b.prtres = 0;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       break;
+                               case USB_PORT_FEAT_POWER:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_POWER\n");
+                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                       hprt0.b.prtpwr = 0;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       break;
+                               case USB_PORT_FEAT_INDICATOR:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_INDICATOR\n");
+                                       /* Port inidicator not supported */
+                                       break;
+                               case USB_PORT_FEAT_C_CONNECTION:
+                                       /* Clears drivers internal connect status change
+                                        * flag */
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n");
+                                       dwc_otg_hcd->flags.b.port_connect_status_change = 0;
+                                       break;
+                               case USB_PORT_FEAT_C_RESET:
+                                       /* Clears the driver's internal Port Reset Change
+                                        * flag */
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_C_RESET\n");
+                                       dwc_otg_hcd->flags.b.port_reset_change = 0;
+                                       break;
+                               case USB_PORT_FEAT_C_ENABLE:
+                                       /* Clears the driver's internal Port
+                                        * Enable/Disable Change flag */
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n");
+                                       dwc_otg_hcd->flags.b.port_enable_change = 0;
+                                       break;
+                               case USB_PORT_FEAT_C_SUSPEND:
+                                       /* Clears the driver's internal Port Suspend
+                                        * Change flag, which is set when resume signaling on
+                                        * the host port is complete */
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n");
+                                       dwc_otg_hcd->flags.b.port_suspend_change = 0;
+                                       break;
+                               case USB_PORT_FEAT_C_OVER_CURRENT:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n");
+                                       dwc_otg_hcd->flags.b.port_over_current_change = 0;
+                                       break;
+                               default:
+                                       retval = -EINVAL;
+                                       DWC_ERROR ("DWC OTG HCD - "
+                                                       "ClearPortFeature request %xh "
+                                                       "unknown or unsupported\n", _wValue);
+                       }
+                       break;
+               case GetHubDescriptor:
+                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                       "GetHubDescriptor\n");
+                       desc = (struct usb_hub_descriptor *)_buf;
+                       desc->bDescLength = 9;
+                       desc->bDescriptorType = 0x29;
+                       desc->bNbrPorts = 1;
+                       desc->wHubCharacteristics = 0x08;
+                       desc->bPwrOn2PwrGood = 1;
+                       desc->bHubContrCurrent = 0;
+                       desc->u.hs.DeviceRemovable[0] = 0;
+                       desc->u.hs.DeviceRemovable[1] = 0xff;
+                       break;
+               case GetHubStatus:
+                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                       "GetHubStatus\n");
+                       memset (_buf, 0, 4);
+                       break;
+               case GetPortStatus:
+                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                       "GetPortStatus\n");
+
+                       if (!_wIndex || _wIndex > 1)
+                               goto error;
+
+                       port_status = 0;
+
+                       if (dwc_otg_hcd->flags.b.port_connect_status_change)
+                               port_status |= (1 << USB_PORT_FEAT_C_CONNECTION);
+
+                       if (dwc_otg_hcd->flags.b.port_enable_change)
+                               port_status |= (1 << USB_PORT_FEAT_C_ENABLE);
+
+                       if (dwc_otg_hcd->flags.b.port_suspend_change)
+                               port_status |= (1 << USB_PORT_FEAT_C_SUSPEND);
+
+                       if (dwc_otg_hcd->flags.b.port_reset_change)
+                               port_status |= (1 << USB_PORT_FEAT_C_RESET);
+
+                       if (dwc_otg_hcd->flags.b.port_over_current_change) {
+                               DWC_ERROR("Device Not Supported\n");
+                               port_status |= (1 << USB_PORT_FEAT_C_OVER_CURRENT);
+                       }
+
+                       if (!dwc_otg_hcd->flags.b.port_connect_status) {
+                               printk("DISCONNECTED PORT\n");
+                               /*
+                                * The port is disconnected, which means the core is
+                                * either in device mode or it soon will be. Just
+                                * return 0's for the remainder of the port status
+                                * since the port register can't be read if the core
+                                * is in device mode.
+                                */
+#if 1 // winder.
+                               *((u32 *) _buf) = cpu_to_le32(port_status);
+#else
+                               *((__le32 *) _buf) = cpu_to_le32(port_status);
+#endif
+                               break;
+                       }
+
+                       hprt0.d32 = dwc_read_reg32(core_if->host_if->hprt0);
+                       DWC_DEBUGPL(DBG_HCDV, "  HPRT0: 0x%08x\n", hprt0.d32);
+
+                       if (hprt0.b.prtconnsts) 
+                               port_status |= (1 << USB_PORT_FEAT_CONNECTION);
+
+                       if (hprt0.b.prtena)
+                               port_status |= (1 << USB_PORT_FEAT_ENABLE);
+
+                       if (hprt0.b.prtsusp)
+                               port_status |= (1 << USB_PORT_FEAT_SUSPEND);
+
+                       if (hprt0.b.prtovrcurract)
+                               port_status |= (1 << USB_PORT_FEAT_OVER_CURRENT);
+
+                       if (hprt0.b.prtrst)
+                               port_status |= (1 << USB_PORT_FEAT_RESET);
+
+                       if (hprt0.b.prtpwr)
+                               port_status |= (1 << USB_PORT_FEAT_POWER);
+
+                       if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
+                               port_status |= USB_PORT_STAT_HIGH_SPEED;
+
+                       else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED)
+                               port_status |= (1 << USB_PORT_FEAT_LOWSPEED);
+
+                       if (hprt0.b.prttstctl)
+                               port_status |= (1 << USB_PORT_FEAT_TEST);
+
+                       /* USB_PORT_FEAT_INDICATOR unsupported always 0 */
+#if 1 // winder.
+                       *((u32 *) _buf) = cpu_to_le32(port_status);
+#else
+                       *((__le32 *) _buf) = cpu_to_le32(port_status);
+#endif
+
+                       break;
+               case SetHubFeature:
+                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                       "SetHubFeature\n");
+                       /* No HUB features supported */
+                       break;
+               case SetPortFeature:
+                       if (_wValue != USB_PORT_FEAT_TEST && (!_wIndex || _wIndex > 1))
+                               goto error;
+
+                       if (!dwc_otg_hcd->flags.b.port_connect_status) {
+                               /*
+                                * The port is disconnected, which means the core is
+                                * either in device mode or it soon will be. Just
+                                * return without doing anything since the port
+                                * register can't be written if the core is in device
+                                * mode.
+                                */
+                               break;
+                       }
+
+                       switch (_wValue) {
+                               case USB_PORT_FEAT_SUSPEND:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
+                                       if (_hcd->self.otg_port == _wIndex
+                                                       && _hcd->self.b_hnp_enable) {
+                                               gotgctl_data_t  gotgctl = {.d32=0};
+                                               gotgctl.b.hstsethnpen = 1;
+                                               dwc_modify_reg32(&core_if->core_global_regs->
+                                                               gotgctl, 0, gotgctl.d32);
+                                               core_if->op_state = A_SUSPEND;
+                                       }
+                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                       hprt0.b.prtsusp = 1;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       //DWC_PRINT( "SUSPEND: HPRT0=%0x\n", hprt0.d32);       
+                                       /* Suspend the Phy Clock */
+                                       {
+                                               pcgcctl_data_t pcgcctl = {.d32=0};
+                                               pcgcctl.b.stoppclk = 1;
+                                               dwc_write_reg32(core_if->pcgcctl, pcgcctl.d32);
+                                       }
+
+                                       /* For HNP the bus must be suspended for at least 200ms.*/
+                                       if (_hcd->self.b_hnp_enable) {
+                                               mdelay(200);
+                                               //DWC_PRINT( "SUSPEND: wait complete! (%d)\n", _hcd->state);
+                                       }
+                                       break;
+                               case USB_PORT_FEAT_POWER:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "SetPortFeature - USB_PORT_FEAT_POWER\n");
+                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                       hprt0.b.prtpwr = 1;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       break;
+                               case USB_PORT_FEAT_RESET:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "SetPortFeature - USB_PORT_FEAT_RESET\n");
+                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                       /* TODO: Is this for OTG protocol??
+                                        *       We shoudl remove OTG totally for Danube system.
+                                        *       But, in the future, maybe we need this.
+                                        */
+#if 1 // winder 
+                                       hprt0.b.prtrst = 1;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+#else
+                                       /* When B-Host the Port reset bit is set in
+                                        * the Start HCD Callback function, so that
+                                        * the reset is started within 1ms of the HNP
+                                        * success interrupt. */
+                                       if (!_hcd->self.is_b_host) {
+                                               hprt0.b.prtrst = 1;
+                                               dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       }
+#endif
+                                       /* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */
+                                       MDELAY (60);
+                                       hprt0.b.prtrst = 0;
+                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                       break;
+
+#ifdef DWC_HS_ELECT_TST
+                               case USB_PORT_FEAT_TEST:
+                                       {
+                                               uint32_t t;
+                                               gintmsk_data_t gintmsk;
+
+                                               t = (_wIndex >> 8); /* MSB wIndex USB */
+                                               DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                               "SetPortFeature - USB_PORT_FEAT_TEST %d\n", t);
+                                               printk("USB_PORT_FEAT_TEST %d\n", t);
+                                               if (t < 6) {
+                                                       hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                                       hprt0.b.prttstctl = t;
+                                                       dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                               } else {
+                                                       /* Setup global vars with reg addresses (quick and
+                                                        * dirty hack, should be cleaned up)
+                                                        */
+                                                       global_regs = core_if->core_global_regs;
+                                                       hc_global_regs = core_if->host_if->host_global_regs;
+                                                       hc_regs = (dwc_otg_hc_regs_t *)((char *)global_regs + 0x500);
+                                                       data_fifo = (uint32_t *)((char *)global_regs + 0x1000);
+
+                                                       if (t == 6) { /* HS_HOST_PORT_SUSPEND_RESUME */
+                                                               /* Save current interrupt mask */
+                                                               gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk);
+
+                                                               /* Disable all interrupts while we muck with
+                                                                * the hardware directly
+                                                                */
+                                                               dwc_write_reg32(&global_regs->gintmsk, 0);
+
+                                                               /* 15 second delay per the test spec */
+                                                               mdelay(15000);
+
+                                                               /* Drive suspend on the root port */
+                                                               hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                                               hprt0.b.prtsusp = 1;
+                                                               hprt0.b.prtres = 0;
+                                                               dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+
+                                                               /* 15 second delay per the test spec */
+                                                               mdelay(15000);
+
+                                                               /* Drive resume on the root port */
+                                                               hprt0.d32 = dwc_otg_read_hprt0 (core_if);
+                                                               hprt0.b.prtsusp = 0;
+                                                               hprt0.b.prtres = 1;
+                                                               dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+                                                               mdelay(100);
+
+                                                               /* Clear the resume bit */
+                                                               hprt0.b.prtres = 0;
+                                                               dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+
+                                                               /* Restore interrupts */
+                                                               dwc_write_reg32(&global_regs->gintmsk, gintmsk.d32);
+                                                       } else if (t == 7) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
+                                                               /* Save current interrupt mask */
+                                                               gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk);
+
+                                                               /* Disable all interrupts while we muck with
+                                                                * the hardware directly
+                                                                */
+                                                               dwc_write_reg32(&global_regs->gintmsk, 0);
+
+                                                               /* 15 second delay per the test spec */
+                                                               mdelay(15000);
+
+                                                               /* Send the Setup packet */
+                                                               do_setup();
+
+                                                               /* 15 second delay so nothing else happens for awhile */
+                                                               mdelay(15000);
+
+                                                               /* Restore interrupts */
+                                                               dwc_write_reg32(&global_regs->gintmsk, gintmsk.d32);
+                                                       } else if (t == 8) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
+                                                               /* Save current interrupt mask */
+                                                               gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk);
+
+                                                               /* Disable all interrupts while we muck with
+                                                                * the hardware directly
+                                                                */
+                                                               dwc_write_reg32(&global_regs->gintmsk, 0);
+
+                                                               /* Send the Setup packet */
+                                                               do_setup();
+
+                                                               /* 15 second delay so nothing else happens for awhile */
+                                                               mdelay(15000);
+
+                                                               /* Send the In and Ack packets */
+                                                               do_in_ack();
+
+                                                               /* 15 second delay so nothing else happens for awhile */
+                                                               mdelay(15000);
+
+                                                               /* Restore interrupts */
+                                                               dwc_write_reg32(&global_regs->gintmsk, gintmsk.d32);
+                                                       }
+                                               }
+                                               break;
+                                       }
+#endif /* DWC_HS_ELECT_TST */
+
+                               case USB_PORT_FEAT_INDICATOR:
+                                       DWC_DEBUGPL (DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+                                                       "SetPortFeature - USB_PORT_FEAT_INDICATOR\n");
+                                       /* Not supported */
+                                       break;
+                               default:
+                                       retval = -EINVAL;
+                                       DWC_ERROR ("DWC OTG HCD - "
+                                                       "SetPortFeature request %xh "
+                                                       "unknown or unsupported\n", _wValue);
+                                       break;
+                       }
+                       break;
+               default:
+error:
+                       retval = -EINVAL;
+                       DWC_WARN ("DWC OTG HCD - "
+                                       "Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n", 
+                                       _typeReq, _wIndex, _wValue);
+                       break;
+       }
+
+       return retval;
+}
+
+
+/**
+ * Assigns transactions from a QTD to a free host channel and initializes the
+ * host channel to perform the transactions. The host channel is removed from
+ * the free list.
+ *
+ * @param _hcd The HCD state structure.
+ * @param _qh Transactions from the first QTD for this QH are selected and
+ * assigned to a free host channel.
+ */
+static void assign_and_init_hc(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh)
+{
+       dwc_hc_t        *hc;
+       dwc_otg_qtd_t   *qtd;
+       struct urb      *urb;
+
+       DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p)\n", __func__, _hcd, _qh);
+
+       hc = list_entry(_hcd->free_hc_list.next, dwc_hc_t, hc_list_entry);
+
+       /* Remove the host channel from the free list. */
+       list_del_init(&hc->hc_list_entry);
+
+       qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry);
+       urb = qtd->urb;
+       _qh->channel = hc;
+       _qh->qtd_in_process = qtd;
+
+       /*
+        * Use usb_pipedevice to determine device address. This address is
+        * 0 before the SET_ADDRESS command and the correct address afterward.
+        */
+       hc->dev_addr = usb_pipedevice(urb->pipe);
+       hc->ep_num = usb_pipeendpoint(urb->pipe);
+
+       if (urb->dev->speed == USB_SPEED_LOW) {
+               hc->speed = DWC_OTG_EP_SPEED_LOW;
+       } else if (urb->dev->speed == USB_SPEED_FULL) {
+               hc->speed = DWC_OTG_EP_SPEED_FULL;
+       } else {
+               hc->speed = DWC_OTG_EP_SPEED_HIGH;
+       }
+       hc->max_packet = dwc_max_packet(_qh->maxp);
+
+       hc->xfer_started = 0;
+       hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS;
+       hc->error_state = (qtd->error_count > 0);
+       hc->halt_on_queue = 0;
+       hc->halt_pending = 0;
+       hc->requests = 0;
+
+       /*
+        * The following values may be modified in the transfer type section
+        * below. The xfer_len value may be reduced when the transfer is
+        * started to accommodate the max widths of the XferSize and PktCnt
+        * fields in the HCTSIZn register.
+        */
+       hc->do_ping = _qh->ping_state;
+       hc->ep_is_in = (usb_pipein(urb->pipe) != 0);
+       hc->data_pid_start = _qh->data_toggle;
+       hc->multi_count = 1;
+
+       if (_hcd->core_if->dma_enable) {
+               hc->xfer_buff = (uint8_t *)(u32)urb->transfer_dma + urb->actual_length;
+       } else {
+               hc->xfer_buff = (uint8_t *)urb->transfer_buffer + urb->actual_length;
+       }
+       hc->xfer_len = urb->transfer_buffer_length - urb->actual_length;
+       hc->xfer_count = 0;
+
+       /*
+        * Set the split attributes
+        */
+       hc->do_split = 0;
+       if (_qh->do_split) {
+               hc->do_split = 1;
+               hc->xact_pos = qtd->isoc_split_pos;
+               hc->complete_split = qtd->complete_split;
+               hc->hub_addr = urb->dev->tt->hub->devnum;
+               hc->port_addr = urb->dev->ttport;
+       }
+
+       switch (usb_pipetype(urb->pipe)) {
+               case PIPE_CONTROL:
+                       hc->ep_type = DWC_OTG_EP_TYPE_CONTROL;
+                       switch (qtd->control_phase) {
+                               case DWC_OTG_CONTROL_SETUP:
+                                       DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction\n");
+                                       hc->do_ping = 0;
+                                       hc->ep_is_in = 0;
+                                       hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
+                                       if (_hcd->core_if->dma_enable) {
+                                               hc->xfer_buff = (uint8_t *)(u32)urb->setup_dma;
+                                       } else {
+                                               hc->xfer_buff = (uint8_t *)urb->setup_packet;
+                                       }
+                                       hc->xfer_len = 8;
+                                       break;
+                               case DWC_OTG_CONTROL_DATA:
+                                       DWC_DEBUGPL(DBG_HCDV, "  Control data transaction\n");
+                                       hc->data_pid_start = qtd->data_toggle;
+                                       break;
+                               case DWC_OTG_CONTROL_STATUS:
+                                       /*
+                                        * Direction is opposite of data direction or IN if no
+                                        * data.
+                                        */
+                                       DWC_DEBUGPL(DBG_HCDV, "  Control status transaction\n");
+                                       if (urb->transfer_buffer_length == 0) {
+                                               hc->ep_is_in = 1;
+                                       } else {
+                                               hc->ep_is_in = (usb_pipein(urb->pipe) != USB_DIR_IN);
+                                       }
+                                       if (hc->ep_is_in) {
+                                               hc->do_ping = 0;
+                                       }
+                                       hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+                                       hc->xfer_len = 0;
+                                       if (_hcd->core_if->dma_enable) {
+                                               hc->xfer_buff = (uint8_t *)_hcd->status_buf_dma;
+                                       } else {
+                                               hc->xfer_buff = (uint8_t *)_hcd->status_buf;
+                                       }
+                                       break;
+                       }
+                       break;
+               case PIPE_BULK:
+                       hc->ep_type = DWC_OTG_EP_TYPE_BULK;
+                       break;
+               case PIPE_INTERRUPT:
+                       hc->ep_type = DWC_OTG_EP_TYPE_INTR;
+                       break;
+               case PIPE_ISOCHRONOUS:
+                       {
+                               struct usb_iso_packet_descriptor *frame_desc;
+                               frame_desc = &urb->iso_frame_desc[qtd->isoc_frame_index];
+                               hc->ep_type = DWC_OTG_EP_TYPE_ISOC;
+                               if (_hcd->core_if->dma_enable) {
+                                       hc->xfer_buff = (uint8_t *)(u32)urb->transfer_dma;
+                               } else {
+                                       hc->xfer_buff = (uint8_t *)urb->transfer_buffer;
+                               }
+                               hc->xfer_buff += frame_desc->offset + qtd->isoc_split_offset;
+                               hc->xfer_len = frame_desc->length - qtd->isoc_split_offset;
+
+                               if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+                                       if (hc->xfer_len <= 188) {
+                                               hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL;
+                                       }
+                                       else {
+                                               hc->xact_pos = DWC_HCSPLIT_XACTPOS_BEGIN;
+                                       }
+                               }
+                       }
+                       break;
+       }
+
+       if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                       hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+               /*
+                * This value may be modified when the transfer is started to
+                * reflect the actual transfer length.
+                */
+               hc->multi_count = dwc_hb_mult(_qh->maxp);
+       }
+
+       dwc_otg_hc_init(_hcd->core_if, hc);
+       hc->qh = _qh;
+}
+#define DEBUG_HOST_CHANNELS
+#ifdef DEBUG_HOST_CHANNELS
+static int last_sel_trans_num_per_scheduled = 0;
+module_param(last_sel_trans_num_per_scheduled, int, 0444);
+
+static int last_sel_trans_num_nonper_scheduled = 0;
+module_param(last_sel_trans_num_nonper_scheduled, int, 0444);
+
+static int last_sel_trans_num_avail_hc_at_start = 0;
+module_param(last_sel_trans_num_avail_hc_at_start, int, 0444);
+
+static int last_sel_trans_num_avail_hc_at_end = 0;
+module_param(last_sel_trans_num_avail_hc_at_end, int, 0444);
+#endif /* DEBUG_HOST_CHANNELS */
+
+/**
+ * This function selects transactions from the HCD transfer schedule and
+ * assigns them to available host channels. It is called from HCD interrupt
+ * handler functions.
+ *
+ * @param _hcd The HCD state structure.
+ *
+ * @return The types of new transactions that were assigned to host channels.
+ */
+dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t *_hcd)
+{
+       struct list_head                *qh_ptr;
+       dwc_otg_qh_t                    *qh;
+       int                             num_channels;
+       unsigned long flags;
+       dwc_otg_transaction_type_e      ret_val = DWC_OTG_TRANSACTION_NONE;
+
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCD, "  Select Transactions\n");
+#endif /*  */
+
+#ifdef DEBUG_HOST_CHANNELS
+       last_sel_trans_num_per_scheduled = 0;
+       last_sel_trans_num_nonper_scheduled = 0;
+       last_sel_trans_num_avail_hc_at_start = _hcd->available_host_channels;
+#endif /* DEBUG_HOST_CHANNELS */
+
+       /* Process entries in the periodic ready list. */
+       num_channels = _hcd->core_if->core_params->host_channels;
+       qh_ptr = _hcd->periodic_sched_ready.next;
+       while (qh_ptr != &_hcd->periodic_sched_ready
+                       && !list_empty(&_hcd->free_hc_list)) {
+
+               // Make sure we leave one channel for non periodic transactions.
+               local_irq_save(flags);
+               if (_hcd->available_host_channels <= 1) {
+                       local_irq_restore(flags);
+                       break;
+               }
+               _hcd->available_host_channels--;
+               local_irq_restore(flags);
+#ifdef DEBUG_HOST_CHANNELS
+               last_sel_trans_num_per_scheduled++;
+#endif /* DEBUG_HOST_CHANNELS */
+
+               qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+               assign_and_init_hc(_hcd, qh);
+
+               /*
+                * Move the QH from the periodic ready schedule to the
+                * periodic assigned schedule.
+                */
+               qh_ptr = qh_ptr->next;
+               local_irq_save(flags);
+               list_move(&qh->qh_list_entry, &_hcd->periodic_sched_assigned);
+               local_irq_restore(flags);
+               ret_val = DWC_OTG_TRANSACTION_PERIODIC;
+       }
+
+       /*
+        * Process entries in the deferred portion of the non-periodic list.
+        * A NAK put them here and, at the right time, they need to be
+        * placed on the sched_inactive list.
+        */
+       qh_ptr = _hcd->non_periodic_sched_deferred.next;
+       while (qh_ptr != &_hcd->non_periodic_sched_deferred) {
+               uint16_t frame_number =
+                       dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(_hcd));
+               qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+               qh_ptr = qh_ptr->next;
+
+               if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
+                       // NAK did this
+                       /*
+                        * Move the QH from the non periodic deferred schedule to
+                        * the non periodic inactive schedule.
+                        */
+                       local_irq_save(flags);
+                       list_move(&qh->qh_list_entry,
+                                       &_hcd->non_periodic_sched_inactive);
+                       local_irq_restore(flags);
+               }
+       }
+
+       /*
+        * Process entries in the inactive portion of the non-periodic
+        * schedule. Some free host channels may not be used if they are
+        * reserved for periodic transfers.
+        */
+       qh_ptr = _hcd->non_periodic_sched_inactive.next;
+       num_channels = _hcd->core_if->core_params->host_channels;
+       while (qh_ptr != &_hcd->non_periodic_sched_inactive
+                       && !list_empty(&_hcd->free_hc_list)) {
+
+               local_irq_save(flags);
+               if (_hcd->available_host_channels < 1) {
+                       local_irq_restore(flags);
+                       break;
+               }
+               _hcd->available_host_channels--;
+               local_irq_restore(flags);
+#ifdef DEBUG_HOST_CHANNELS
+               last_sel_trans_num_nonper_scheduled++;
+#endif /* DEBUG_HOST_CHANNELS */
+
+               qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+               assign_and_init_hc(_hcd, qh);
+
+               /*
+                * Move the QH from the non-periodic inactive schedule to the
+                * non-periodic active schedule.
+                */
+               qh_ptr = qh_ptr->next;
+               local_irq_save(flags);
+               list_move(&qh->qh_list_entry, &_hcd->non_periodic_sched_active);
+               local_irq_restore(flags);
+
+               if (ret_val == DWC_OTG_TRANSACTION_NONE) {
+                       ret_val = DWC_OTG_TRANSACTION_NON_PERIODIC;
+               } else {
+                       ret_val = DWC_OTG_TRANSACTION_ALL;
+               }
+
+       }
+#ifdef DEBUG_HOST_CHANNELS
+       last_sel_trans_num_avail_hc_at_end = _hcd->available_host_channels;
+#endif /* DEBUG_HOST_CHANNELS */
+
+       return ret_val;
+}
+
+/**
+ * Attempts to queue a single transaction request for a host channel
+ * associated with either a periodic or non-periodic transfer. This function
+ * assumes that there is space available in the appropriate request queue. For
+ * an OUT transfer or SETUP transaction in Slave mode, it checks whether space
+ * is available in the appropriate Tx FIFO.
+ *
+ * @param _hcd The HCD state structure.
+ * @param _hc Host channel descriptor associated with either a periodic or
+ * non-periodic transfer.
+ * @param _fifo_dwords_avail Number of DWORDs available in the periodic Tx
+ * FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic
+ * transfers.
+ *
+ * @return 1 if a request is queued and more requests may be needed to
+ * complete the transfer, 0 if no more requests are required for this
+ * transfer, -1 if there is insufficient space in the Tx FIFO.
+ */
+static int queue_transaction(dwc_otg_hcd_t *_hcd,
+               dwc_hc_t *_hc,
+               uint16_t _fifo_dwords_avail)
+{
+       int retval;
+
+       if (_hcd->core_if->dma_enable) {
+               if (!_hc->xfer_started) {
+                       dwc_otg_hc_start_transfer(_hcd->core_if, _hc);
+                       _hc->qh->ping_state = 0;
+               }
+               retval = 0;
+       } else  if (_hc->halt_pending) {
+               /* Don't queue a request if the channel has been halted. */
+               retval = 0;
+       } else if (_hc->halt_on_queue) {
+               dwc_otg_hc_halt(_hcd->core_if, _hc, _hc->halt_status);
+               retval = 0;
+       } else if (_hc->do_ping) {
+               if (!_hc->xfer_started) {
+                       dwc_otg_hc_start_transfer(_hcd->core_if, _hc);
+               }
+               retval = 0;
+       } else if (!_hc->ep_is_in ||
+                       _hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+               if ((_fifo_dwords_avail * 4) >= _hc->max_packet) {
+                       if (!_hc->xfer_started) {
+                               dwc_otg_hc_start_transfer(_hcd->core_if, _hc);
+                               retval = 1;
+                       } else {
+                               retval = dwc_otg_hc_continue_transfer(_hcd->core_if, _hc);
+                       }
+               } else {
+                       retval = -1;
+               }
+       } else {                
+               if (!_hc->xfer_started) {
+                       dwc_otg_hc_start_transfer(_hcd->core_if, _hc);
+                       retval = 1;
+               } else {
+                       retval = dwc_otg_hc_continue_transfer(_hcd->core_if, _hc);
+               }
+       }
+
+       return retval;
+}
+
+/**
+ * Processes active non-periodic channels and queues transactions for these
+ * channels to the DWC_otg controller. After queueing transactions, the NP Tx
+ * FIFO Empty interrupt is enabled if there are more transactions to queue as
+ * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx
+ * FIFO Empty interrupt is disabled.
+ */
+static void process_non_periodic_channels(dwc_otg_hcd_t *_hcd)
+{
+       gnptxsts_data_t         tx_status;
+       struct list_head        *orig_qh_ptr;
+       dwc_otg_qh_t            *qh;
+       int                     status;
+       int                     no_queue_space = 0;
+       int                     no_fifo_space = 0;
+       int                     more_to_do = 0;
+
+       dwc_otg_core_global_regs_t *global_regs = _hcd->core_if->core_global_regs;
+
+       DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n");
+#ifdef DEBUG   
+       tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+       DWC_DEBUGPL(DBG_HCDV, "  NP Tx Req Queue Space Avail (before queue): %d\n",
+                       tx_status.b.nptxqspcavail);
+       DWC_DEBUGPL(DBG_HCDV, "  NP Tx FIFO Space Avail (before queue): %d\n",
+                       tx_status.b.nptxfspcavail);
+#endif
+       /*
+        * Keep track of the starting point. Skip over the start-of-list
+        * entry.
+        */
+       if (_hcd->non_periodic_qh_ptr == &_hcd->non_periodic_sched_active) {
+               _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next;
+       }
+       orig_qh_ptr = _hcd->non_periodic_qh_ptr;
+
+       /*
+        * Process once through the active list or until no more space is
+        * available in the request queue or the Tx FIFO.
+        */
+       do {
+               tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+               if (!_hcd->core_if->dma_enable && tx_status.b.nptxqspcavail == 0) {
+                       no_queue_space = 1;
+                       break;
+               }
+
+               qh = list_entry(_hcd->non_periodic_qh_ptr, dwc_otg_qh_t, qh_list_entry);
+               status = queue_transaction(_hcd, qh->channel, tx_status.b.nptxfspcavail);
+
+               if (status > 0) {
+                       more_to_do = 1;
+               } else if (status < 0) {
+                       no_fifo_space = 1;
+                       break;
+               }
+
+               /* Advance to next QH, skipping start-of-list entry. */
+               _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next;
+               if (_hcd->non_periodic_qh_ptr == &_hcd->non_periodic_sched_active) {
+                       _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next;
+               }
+
+       } while (_hcd->non_periodic_qh_ptr != orig_qh_ptr);
+
+       if (!_hcd->core_if->dma_enable) {
+               gintmsk_data_t intr_mask = {.d32 = 0};
+               intr_mask.b.nptxfempty = 1;
+
+#ifdef DEBUG   
+               tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+               DWC_DEBUGPL(DBG_HCDV, "  NP Tx Req Queue Space Avail (after queue): %d\n",
+                               tx_status.b.nptxqspcavail);
+               DWC_DEBUGPL(DBG_HCDV, "  NP Tx FIFO Space Avail (after queue): %d\n",
+                               tx_status.b.nptxfspcavail);
+#endif
+               if (more_to_do || no_queue_space || no_fifo_space) {
+                       /*
+                        * May need to queue more transactions as the request
+                        * queue or Tx FIFO empties. Enable the non-periodic
+                        * Tx FIFO empty interrupt. (Always use the half-empty
+                        * level to ensure that new requests are loaded as
+                        * soon as possible.)
+                        */
+                       dwc_modify_reg32(&global_regs->gintmsk, 0, intr_mask.d32);
+               } else {
+                       /*
+                        * Disable the Tx FIFO empty interrupt since there are
+                        * no more transactions that need to be queued right
+                        * now. This function is called from interrupt
+                        * handlers to queue more transactions as transfer
+                        * states change.
+                        */
+                       dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0);
+               }
+       }
+}
+
+/**
+ * Processes periodic channels for the next frame and queues transactions for
+ * these channels to the DWC_otg controller. After queueing transactions, the
+ * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions
+ * to queue as Periodic Tx FIFO or request queue space becomes available.
+ * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled.
+ */
+static void process_periodic_channels(dwc_otg_hcd_t *_hcd)
+{
+       hptxsts_data_t          tx_status;
+       struct list_head        *qh_ptr;
+       dwc_otg_qh_t            *qh;
+       int                     status;
+       int                     no_queue_space = 0;
+       int                     no_fifo_space = 0;
+
+       dwc_otg_host_global_regs_t *host_regs;
+       host_regs = _hcd->core_if->host_if->host_global_regs;
+
+       DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n");
+#ifdef DEBUG   
+       tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts);
+       DWC_DEBUGPL(DBG_HCDV, "  P Tx Req Queue Space Avail (before queue): %d\n",
+                       tx_status.b.ptxqspcavail);
+       DWC_DEBUGPL(DBG_HCDV, "  P Tx FIFO Space Avail (before queue): %d\n",
+                       tx_status.b.ptxfspcavail);
+#endif
+
+       qh_ptr = _hcd->periodic_sched_assigned.next;
+       while (qh_ptr != &_hcd->periodic_sched_assigned) {
+               tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts);
+               if (tx_status.b.ptxqspcavail == 0) {
+                       no_queue_space = 1;
+                       break;
+               }
+
+               qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+
+               /*
+                * Set a flag if we're queuing high-bandwidth in slave mode.
+                * The flag prevents any halts to get into the request queue in
+                * the middle of multiple high-bandwidth packets getting queued.
+                */
+               if ((!_hcd->core_if->dma_enable) && 
+                               (qh->channel->multi_count > 1)) 
+               {
+                       _hcd->core_if->queuing_high_bandwidth = 1;
+               }
+
+               status = queue_transaction(_hcd, qh->channel, tx_status.b.ptxfspcavail);
+               if (status < 0) {
+                       no_fifo_space = 1;
+                       break;
+               }
+
+               /*
+                * In Slave mode, stay on the current transfer until there is
+                * nothing more to do or the high-bandwidth request count is
+                * reached. In DMA mode, only need to queue one request. The
+                * controller automatically handles multiple packets for
+                * high-bandwidth transfers.
+                */
+               if (_hcd->core_if->dma_enable ||
+                               (status == 0 ||
+                                qh->channel->requests == qh->channel->multi_count)) {
+                       qh_ptr = qh_ptr->next;
+                       /*
+                        * Move the QH from the periodic assigned schedule to
+                        * the periodic queued schedule.
+                        */
+                       list_move(&qh->qh_list_entry, &_hcd->periodic_sched_queued);
+
+                       /* done queuing high bandwidth */
+                       _hcd->core_if->queuing_high_bandwidth = 0;
+               }
+       }
+
+       if (!_hcd->core_if->dma_enable) {
+               dwc_otg_core_global_regs_t *global_regs;
+               gintmsk_data_t intr_mask = {.d32 = 0};
+
+               global_regs = _hcd->core_if->core_global_regs;
+               intr_mask.b.ptxfempty = 1;
+#ifdef DEBUG   
+               tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts);
+               DWC_DEBUGPL(DBG_HCDV, "  P Tx Req Queue Space Avail (after queue): %d\n",
+                               tx_status.b.ptxqspcavail);
+               DWC_DEBUGPL(DBG_HCDV, "  P Tx FIFO Space Avail (after queue): %d\n",
+                               tx_status.b.ptxfspcavail);
+#endif
+               if (!(list_empty(&_hcd->periodic_sched_assigned)) ||
+                               no_queue_space || no_fifo_space) {
+                       /*
+                        * May need to queue more transactions as the request
+                        * queue or Tx FIFO empties. Enable the periodic Tx
+                        * FIFO empty interrupt. (Always use the half-empty
+                        * level to ensure that new requests are loaded as
+                        * soon as possible.)
+                        */
+                       dwc_modify_reg32(&global_regs->gintmsk, 0, intr_mask.d32);
+               } else {
+                       /*
+                        * Disable the Tx FIFO empty interrupt since there are
+                        * no more transactions that need to be queued right
+                        * now. This function is called from interrupt
+                        * handlers to queue more transactions as transfer
+                        * states change.
+                        */
+                       dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0);
+               }
+       }               
+}
+
+/**
+ * This function processes the currently active host channels and queues
+ * transactions for these channels to the DWC_otg controller. It is called
+ * from HCD interrupt handler functions.
+ *
+ * @param _hcd The HCD state structure.
+ * @param _tr_type The type(s) of transactions to queue (non-periodic,
+ * periodic, or both).
+ */
+void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t *_hcd,
+               dwc_otg_transaction_type_e _tr_type)
+{
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n");
+#endif
+       /* Process host channels associated with periodic transfers. */
+       if ((_tr_type == DWC_OTG_TRANSACTION_PERIODIC ||
+                               _tr_type == DWC_OTG_TRANSACTION_ALL) &&
+                       !list_empty(&_hcd->periodic_sched_assigned)) {
+
+               process_periodic_channels(_hcd);
+       }
+
+       /* Process host channels associated with non-periodic transfers. */
+       if ((_tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC ||
+                               _tr_type == DWC_OTG_TRANSACTION_ALL)) {
+               if (!list_empty(&_hcd->non_periodic_sched_active)) {
+                       process_non_periodic_channels(_hcd);
+               } else {
+                       /*
+                        * Ensure NP Tx FIFO empty interrupt is disabled when
+                        * there are no non-periodic transfers to process.
+                        */
+                       gintmsk_data_t gintmsk = {.d32 = 0};
+                       gintmsk.b.nptxfempty = 1;
+                       dwc_modify_reg32(&_hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+               }
+       }
+}
+
+/**
+ * Sets the final status of an URB and returns it to the device driver. Any
+ * required cleanup of the URB is performed.
+ */
+void dwc_otg_hcd_complete_urb(dwc_otg_hcd_t * _hcd, struct urb *_urb,
+               int _status)
+       __releases(_hcd->lock)
+__acquires(_hcd->lock)
+{
+#ifdef DEBUG
+       if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+               DWC_PRINT("%s: urb %p, device %d, ep %d %s, status=%d\n",
+                               __func__, _urb, usb_pipedevice(_urb->pipe),
+                               usb_pipeendpoint(_urb->pipe),
+                               usb_pipein(_urb->pipe) ? "IN" : "OUT", _status);
+               if (usb_pipetype(_urb->pipe) == PIPE_ISOCHRONOUS) {
+                       int i;
+                       for (i = 0; i < _urb->number_of_packets; i++) {
+                               DWC_PRINT("  ISO Desc %d status: %d\n",
+                                               i, _urb->iso_frame_desc[i].status);
+                       }
+               }
+       }
+#endif
+
+       _urb->status = _status;
+       _urb->hcpriv = NULL;
+       usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(_hcd), _urb);
+       spin_unlock(&_hcd->lock);
+       usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(_hcd), _urb, _status);
+       spin_lock(&_hcd->lock);
+}
+
+/*
+ * Returns the Queue Head for an URB.
+ */
+dwc_otg_qh_t *dwc_urb_to_qh(struct urb *_urb)
+{
+       struct usb_host_endpoint *ep = dwc_urb_to_endpoint(_urb);
+       return (dwc_otg_qh_t *)ep->hcpriv;
+}
+
+#ifdef DEBUG
+void dwc_print_setup_data (uint8_t *setup)
+{
+       int i;
+       if (CHK_DEBUG_LEVEL(DBG_HCD)){
+               DWC_PRINT("Setup Data = MSB ");
+               for (i=7; i>=0; i--) DWC_PRINT ("%02x ", setup[i]);
+               DWC_PRINT("\n");
+               DWC_PRINT("  bmRequestType Tranfer = %s\n", (setup[0]&0x80) ? "Device-to-Host" : "Host-to-Device");
+               DWC_PRINT("  bmRequestType Type = ");
+               switch ((setup[0]&0x60) >> 5) {
+                       case 0: DWC_PRINT("Standard\n"); break;
+                       case 1: DWC_PRINT("Class\n"); break;
+                       case 2: DWC_PRINT("Vendor\n"); break;
+                       case 3: DWC_PRINT("Reserved\n"); break;
+               }
+               DWC_PRINT("  bmRequestType Recipient = ");
+               switch (setup[0]&0x1f) {
+                       case 0: DWC_PRINT("Device\n"); break;
+                       case 1: DWC_PRINT("Interface\n"); break;
+                       case 2: DWC_PRINT("Endpoint\n"); break;
+                       case 3: DWC_PRINT("Other\n"); break;
+                       default: DWC_PRINT("Reserved\n"); break;
+               }
+               DWC_PRINT("  bRequest = 0x%0x\n", setup[1]);
+               DWC_PRINT("  wValue = 0x%0x\n", *((uint16_t *)&setup[2]));
+               DWC_PRINT("  wIndex = 0x%0x\n", *((uint16_t *)&setup[4]));
+               DWC_PRINT("  wLength = 0x%0x\n\n", *((uint16_t *)&setup[6]));
+       }
+}
+#endif
+
+void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t *_hcd) {
+#ifdef DEBUG
+#if 0
+       DWC_PRINT("Frame remaining at SOF:\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->frrem_samples, _hcd->frrem_accum,
+                       (_hcd->frrem_samples > 0) ?
+                       _hcd->frrem_accum/_hcd->frrem_samples : 0);
+
+       DWC_PRINT("\n");
+       DWC_PRINT("Frame remaining at start_transfer (uframe 7):\n");
+       DWC_PRINT("  samples %u, accum %u, avg %u\n",
+                       _hcd->core_if->hfnum_7_samples, _hcd->core_if->hfnum_7_frrem_accum,
+                       (_hcd->core_if->hfnum_7_samples > 0) ?
+                       _hcd->core_if->hfnum_7_frrem_accum/_hcd->core_if->hfnum_7_samples : 0);
+       DWC_PRINT("Frame remaining at start_transfer (uframe 0):\n");
+       DWC_PRINT("  samples %u, accum %u, avg %u\n",
+                       _hcd->core_if->hfnum_0_samples, _hcd->core_if->hfnum_0_frrem_accum,
+                       (_hcd->core_if->hfnum_0_samples > 0) ?
+                       _hcd->core_if->hfnum_0_frrem_accum/_hcd->core_if->hfnum_0_samples : 0);
+       DWC_PRINT("Frame remaining at start_transfer (uframe 1-6):\n");
+       DWC_PRINT("  samples %u, accum %u, avg %u\n",
+                       _hcd->core_if->hfnum_other_samples, _hcd->core_if->hfnum_other_frrem_accum,
+                       (_hcd->core_if->hfnum_other_samples > 0) ?
+                       _hcd->core_if->hfnum_other_frrem_accum/_hcd->core_if->hfnum_other_samples : 0);
+
+       DWC_PRINT("\n");
+       DWC_PRINT("Frame remaining at sample point A (uframe 7):\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->hfnum_7_samples_a, _hcd->hfnum_7_frrem_accum_a,
+                       (_hcd->hfnum_7_samples_a > 0) ?
+                       _hcd->hfnum_7_frrem_accum_a/_hcd->hfnum_7_samples_a : 0);
+       DWC_PRINT("Frame remaining at sample point A (uframe 0):\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->hfnum_0_samples_a, _hcd->hfnum_0_frrem_accum_a,
+                       (_hcd->hfnum_0_samples_a > 0) ?
+                       _hcd->hfnum_0_frrem_accum_a/_hcd->hfnum_0_samples_a : 0);
+       DWC_PRINT("Frame remaining at sample point A (uframe 1-6):\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->hfnum_other_samples_a, _hcd->hfnum_other_frrem_accum_a,
+                       (_hcd->hfnum_other_samples_a > 0) ?
+                       _hcd->hfnum_other_frrem_accum_a/_hcd->hfnum_other_samples_a : 0);
+
+       DWC_PRINT("\n");
+       DWC_PRINT("Frame remaining at sample point B (uframe 7):\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->hfnum_7_samples_b, _hcd->hfnum_7_frrem_accum_b,
+                       (_hcd->hfnum_7_samples_b > 0) ?
+                       _hcd->hfnum_7_frrem_accum_b/_hcd->hfnum_7_samples_b : 0);
+       DWC_PRINT("Frame remaining at sample point B (uframe 0):\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->hfnum_0_samples_b, _hcd->hfnum_0_frrem_accum_b,
+                       (_hcd->hfnum_0_samples_b > 0) ?
+                       _hcd->hfnum_0_frrem_accum_b/_hcd->hfnum_0_samples_b : 0);
+       DWC_PRINT("Frame remaining at sample point B (uframe 1-6):\n");
+       DWC_PRINT("  samples %u, accum %llu, avg %llu\n",
+                       _hcd->hfnum_other_samples_b, _hcd->hfnum_other_frrem_accum_b,
+                       (_hcd->hfnum_other_samples_b > 0) ?
+                       _hcd->hfnum_other_frrem_accum_b/_hcd->hfnum_other_samples_b : 0);
+#endif
+#endif 
+}
+
+void dwc_otg_hcd_dump_state(dwc_otg_hcd_t *_hcd)
+{
+#ifdef DEBUG
+       int num_channels;
+       int i;
+       gnptxsts_data_t np_tx_status;
+       hptxsts_data_t p_tx_status;
+
+       num_channels = _hcd->core_if->core_params->host_channels;
+       DWC_PRINT("\n");
+       DWC_PRINT("************************************************************\n");
+       DWC_PRINT("HCD State:\n");
+       DWC_PRINT("  Num channels: %d\n", num_channels);
+       for (i = 0; i < num_channels; i++) {
+               dwc_hc_t *hc = _hcd->hc_ptr_array[i];
+               DWC_PRINT("  Channel %d:\n", i);
+               DWC_PRINT("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+                               hc->dev_addr, hc->ep_num, hc->ep_is_in);
+               DWC_PRINT("    speed: %d\n", hc->speed);
+               DWC_PRINT("    ep_type: %d\n", hc->ep_type);
+               DWC_PRINT("    max_packet: %d\n", hc->max_packet);
+               DWC_PRINT("    data_pid_start: %d\n", hc->data_pid_start);
+               DWC_PRINT("    multi_count: %d\n", hc->multi_count);
+               DWC_PRINT("    xfer_started: %d\n", hc->xfer_started);
+               DWC_PRINT("    xfer_buff: %p\n", hc->xfer_buff);
+               DWC_PRINT("    xfer_len: %d\n", hc->xfer_len);
+               DWC_PRINT("    xfer_count: %d\n", hc->xfer_count);
+               DWC_PRINT("    halt_on_queue: %d\n", hc->halt_on_queue);
+               DWC_PRINT("    halt_pending: %d\n", hc->halt_pending);
+               DWC_PRINT("    halt_status: %d\n", hc->halt_status);
+               DWC_PRINT("    do_split: %d\n", hc->do_split);
+               DWC_PRINT("    complete_split: %d\n", hc->complete_split);
+               DWC_PRINT("    hub_addr: %d\n", hc->hub_addr);
+               DWC_PRINT("    port_addr: %d\n", hc->port_addr);
+               DWC_PRINT("    xact_pos: %d\n", hc->xact_pos);
+               DWC_PRINT("    requests: %d\n", hc->requests);
+               DWC_PRINT("    qh: %p\n", hc->qh);
+               if (hc->xfer_started) {
+                       hfnum_data_t hfnum;
+                       hcchar_data_t hcchar;
+                       hctsiz_data_t hctsiz;
+                       hcint_data_t hcint;
+                       hcintmsk_data_t hcintmsk;
+                       hfnum.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hfnum);
+                       hcchar.d32 = dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]->hcchar);
+                       hctsiz.d32 = dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]->hctsiz);
+                       hcint.d32 = dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]->hcint);
+                       hcintmsk.d32 = dwc_read_reg32(&_hcd->core_if->host_if->hc_regs[i]->hcintmsk);
+                       DWC_PRINT("    hfnum: 0x%08x\n", hfnum.d32);
+                       DWC_PRINT("    hcchar: 0x%08x\n", hcchar.d32);
+                       DWC_PRINT("    hctsiz: 0x%08x\n", hctsiz.d32);
+                       DWC_PRINT("    hcint: 0x%08x\n", hcint.d32);
+                       DWC_PRINT("    hcintmsk: 0x%08x\n", hcintmsk.d32);
+               }
+               if (hc->xfer_started && (hc->qh != NULL) && (hc->qh->qtd_in_process != NULL)) {
+                       dwc_otg_qtd_t *qtd;
+                       struct urb *urb;
+                       qtd = hc->qh->qtd_in_process;
+                       urb = qtd->urb;
+                       DWC_PRINT("    URB Info:\n");
+                       DWC_PRINT("      qtd: %p, urb: %p\n", qtd, urb);
+                       if (urb != NULL) {
+                               DWC_PRINT("      Dev: %d, EP: %d %s\n",
+                                               usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe),
+                                               usb_pipein(urb->pipe) ? "IN" : "OUT");
+                               DWC_PRINT("      Max packet size: %d\n",
+                                               usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+                               DWC_PRINT("      transfer_buffer: %p\n", urb->transfer_buffer);
+                               DWC_PRINT("      transfer_dma: %p\n", (void *)urb->transfer_dma);
+                               DWC_PRINT("      transfer_buffer_length: %d\n", urb->transfer_buffer_length);
+                               DWC_PRINT("      actual_length: %d\n", urb->actual_length);
+                       }
+               }
+       }
+       //DWC_PRINT("  non_periodic_channels: %d\n", _hcd->non_periodic_channels);
+       //DWC_PRINT("  periodic_channels: %d\n", _hcd->periodic_channels);
+       DWC_PRINT("  available_channels: %d\n", _hcd->available_host_channels);
+       DWC_PRINT("  periodic_usecs: %d\n", _hcd->periodic_usecs);
+       np_tx_status.d32 = dwc_read_reg32(&_hcd->core_if->core_global_regs->gnptxsts);
+       DWC_PRINT("  NP Tx Req Queue Space Avail: %d\n", np_tx_status.b.nptxqspcavail);
+       DWC_PRINT("  NP Tx FIFO Space Avail: %d\n", np_tx_status.b.nptxfspcavail);
+       p_tx_status.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hptxsts);
+       DWC_PRINT("  P Tx Req Queue Space Avail: %d\n", p_tx_status.b.ptxqspcavail);
+       DWC_PRINT("  P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail);
+       dwc_otg_hcd_dump_frrem(_hcd);
+       dwc_otg_dump_global_registers(_hcd->core_if);
+       dwc_otg_dump_host_registers(_hcd->core_if);
+       DWC_PRINT("************************************************************\n");
+       DWC_PRINT("\n");
+#endif
+}
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/dwc_otg/dwc_otg_hcd.h b/drivers/usb/dwc_otg/dwc_otg_hcd.h
new file mode 100644
index 0000000..8a20dff
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_hcd.h
@@ -0,0 +1,676 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd.h $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 537387 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+#if !defined(__DWC_HCD_H__)
+#define __DWC_HCD_H__
+
+#include <linux/list.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+struct lm_device;
+struct dwc_otg_device;
+
+#include "dwc_otg_cil.h"
+//#include "dwc_otg_ifx.h" // winder
+
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Host Contoller Driver (HCD).
+ *
+ * The Host Controller Driver (HCD) is responsible for translating requests
+ * from the USB Driver into the appropriate actions on the DWC_otg controller.
+ * It isolates the USBD from the specifics of the controller by providing an
+ * API to the USBD.
+ */
+
+/**
+ * Phases for control transfers.
+ */
+typedef enum dwc_otg_control_phase {
+       DWC_OTG_CONTROL_SETUP,
+       DWC_OTG_CONTROL_DATA,
+       DWC_OTG_CONTROL_STATUS
+} dwc_otg_control_phase_e;
+
+/** Transaction types. */
+typedef enum dwc_otg_transaction_type {
+       DWC_OTG_TRANSACTION_NONE,
+       DWC_OTG_TRANSACTION_PERIODIC,
+       DWC_OTG_TRANSACTION_NON_PERIODIC,
+       DWC_OTG_TRANSACTION_ALL
+} dwc_otg_transaction_type_e;
+
+/**
+ * A Queue Transfer Descriptor (QTD) holds the state of a bulk, control,
+ * interrupt, or isochronous transfer. A single QTD is created for each URB
+ * (of one of these types) submitted to the HCD. The transfer associated with
+ * a QTD may require one or multiple transactions.
+ *
+ * A QTD is linked to a Queue Head, which is entered in either the
+ * non-periodic or periodic schedule for execution. When a QTD is chosen for
+ * execution, some or all of its transactions may be executed. After
+ * execution, the state of the QTD is updated. The QTD may be retired if all
+ * its transactions are complete or if an error occurred. Otherwise, it
+ * remains in the schedule so more transactions can be executed later.
+ */
+struct dwc_otg_qh;
+typedef struct dwc_otg_qtd {
+       /**
+        * Determines the PID of the next data packet for the data phase of
+        * control transfers. Ignored for other transfer types.<br>
+        * One of the following values:
+        *      - DWC_OTG_HC_PID_DATA0
+        *      - DWC_OTG_HC_PID_DATA1
+        */
+       uint8_t                 data_toggle;
+
+       /** Current phase for control transfers (Setup, Data, or Status). */
+       dwc_otg_control_phase_e control_phase;
+
+       /** Keep track of the current split type
+        * for FS/LS endpoints on a HS Hub */
+       uint8_t                 complete_split;
+
+       /** How many bytes transferred during SSPLIT OUT */
+       uint32_t                ssplit_out_xfer_count;
+
+       /**
+        * Holds the number of bus errors that have occurred for a transaction
+        * within this transfer.
+        */
+       uint8_t                 error_count;
+
+       /**
+        * Index of the next frame descriptor for an isochronous transfer. A
+        * frame descriptor describes the buffer position and length of the
+        * data to be transferred in the next scheduled (micro)frame of an
+        * isochronous transfer. It also holds status for that transaction.
+        * The frame index starts at 0.
+        */
+       int                     isoc_frame_index;
+
+       /** Position of the ISOC split on full/low speed */
+       uint8_t                 isoc_split_pos;
+
+       /** Position of the ISOC split in the buffer for the current frame */
+       uint16_t                isoc_split_offset;
+
+       /** URB for this transfer */
+       struct urb              *urb;
+
+       /** This list of QTDs */
+       struct list_head        qtd_list_entry;
+
+       /* Field to track the qh pointer */
+       struct dwc_otg_qh *qtd_qh_ptr;
+} dwc_otg_qtd_t;
+
+/**
+ * A Queue Head (QH) holds the static characteristics of an endpoint and
+ * maintains a list of transfers (QTDs) for that endpoint. A QH structure may
+ * be entered in either the non-periodic or periodic schedule.
+ */
+typedef struct dwc_otg_qh {
+       /**
+        * Endpoint type.
+        * One of the following values:
+        *      - USB_ENDPOINT_XFER_CONTROL
+        *      - USB_ENDPOINT_XFER_ISOC
+        *      - USB_ENDPOINT_XFER_BULK
+        *      - USB_ENDPOINT_XFER_INT
+        */
+       uint8_t                 ep_type;
+       uint8_t                 ep_is_in;
+
+       /** wMaxPacketSize Field of Endpoint Descriptor. */
+       uint16_t                maxp;
+
+       /**
+        * Determines the PID of the next data packet for non-control
+        * transfers. Ignored for control transfers.<br>
+        * One of the following values:
+        *      - DWC_OTG_HC_PID_DATA0
+        *      - DWC_OTG_HC_PID_DATA1
+        */
+       uint8_t                 data_toggle;
+
+       /** Ping state if 1. */
+       uint8_t                 ping_state;
+
+       /**
+        * List of QTDs for this QH.
+        */
+       struct list_head        qtd_list;
+
+       /** Host channel currently processing transfers for this QH. */
+       dwc_hc_t                *channel;
+
+       /** QTD currently assigned to a host channel for this QH. */
+       dwc_otg_qtd_t           *qtd_in_process;
+
+       /** Full/low speed endpoint on high-speed hub requires split. */
+       uint8_t                 do_split;
+
+       /** @name Periodic schedule information */
+       /** @{ */
+
+       /** Bandwidth in microseconds per (micro)frame. */
+       uint8_t                 usecs;
+
+       /** Interval between transfers in (micro)frames. */
+       uint16_t                interval;
+
+       /**
+        * (micro)frame to initialize a periodic transfer. The transfer
+        * executes in the following (micro)frame.
+        */
+       uint16_t                sched_frame;
+
+       /** (micro)frame at which last start split was initialized. */
+       uint16_t                start_split_frame;
+
+       /** @} */
+
+       uint16_t speed;
+       uint16_t frame_usecs[8];
+       /** Entry for QH in either the periodic or non-periodic schedule. */
+       struct list_head        qh_list_entry;
+} dwc_otg_qh_t;
+
+/**
+ * This structure holds the state of the HCD, including the non-periodic and
+ * periodic schedules.
+ */
+typedef struct dwc_otg_hcd {
+       spinlock_t              lock;
+
+       /** DWC OTG Core Interface Layer */
+       dwc_otg_core_if_t       *core_if;
+
+       /** Internal DWC HCD Flags */   
+       volatile union dwc_otg_hcd_internal_flags {
+               uint32_t d32;
+               struct {
+                       unsigned port_connect_status_change : 1;
+                       unsigned port_connect_status : 1;
+                       unsigned port_reset_change : 1;
+                       unsigned port_enable_change : 1;
+                       unsigned port_suspend_change : 1;
+                       unsigned port_over_current_change : 1;
+                       unsigned reserved : 27;
+               } b;
+       } flags;
+
+       /**
+        * Inactive items in the non-periodic schedule. This is a list of
+        * Queue Heads. Transfers associated with these Queue Heads are not
+        * currently assigned to a host channel.
+        */
+       struct list_head        non_periodic_sched_inactive;
+
+       /**
+        * Deferred items in the non-periodic schedule. This is a list of
+        * Queue Heads. Transfers associated with these Queue Heads are not
+        * currently assigned to a host channel.
+        * When we get an NAK, the QH goes here.
+        */
+       struct list_head        non_periodic_sched_deferred;
+
+       /**
+        * Active items in the non-periodic schedule. This is a list of
+        * Queue Heads. Transfers associated with these Queue Heads are
+        * currently assigned to a host channel.
+        */
+       struct list_head        non_periodic_sched_active;
+
+       /**
+        * Pointer to the next Queue Head to process in the active
+        * non-periodic schedule.
+        */
+       struct list_head        *non_periodic_qh_ptr;
+
+       /**
+        * Inactive items in the periodic schedule. This is a list of QHs for
+        * periodic transfers that are _not_ scheduled for the next frame.
+        * Each QH in the list has an interval counter that determines when it
+        * needs to be scheduled for execution. This scheduling mechanism
+        * allows only a simple calculation for periodic bandwidth used (i.e.
+        * must assume that all periodic transfers may need to execute in the
+        * same frame). However, it greatly simplifies scheduling and should
+        * be sufficient for the vast majority of OTG hosts, which need to
+        * connect to a small number of peripherals at one time.
+        *
+        * Items move from this list to periodic_sched_ready when the QH
+        * interval counter is 0 at SOF.
+        */
+       struct list_head        periodic_sched_inactive;
+
+       /**
+        * List of periodic QHs that are ready for execution in the next
+        * frame, but have not yet been assigned to host channels.
+        *
+        * Items move from this list to periodic_sched_assigned as host
+        * channels become available during the current frame.
+        */
+       struct list_head        periodic_sched_ready;
+
+       /**
+        * List of periodic QHs to be executed in the next frame that are
+        * assigned to host channels.
+        *
+        * Items move from this list to periodic_sched_queued as the
+        * transactions for the QH are queued to the DWC_otg controller.
+        */
+       struct list_head        periodic_sched_assigned;
+
+       /**
+        * List of periodic QHs that have been queued for execution.
+        *
+        * Items move from this list to either periodic_sched_inactive or
+        * periodic_sched_ready when the channel associated with the transfer
+        * is released. If the interval for the QH is 1, the item moves to
+        * periodic_sched_ready because it must be rescheduled for the next
+        * frame. Otherwise, the item moves to periodic_sched_inactive.
+        */
+       struct list_head        periodic_sched_queued;
+
+       /**
+        * Total bandwidth claimed so far for periodic transfers. This value
+        * is in microseconds per (micro)frame. The assumption is that all
+        * periodic transfers may occur in the same (micro)frame.
+        */
+       uint16_t                periodic_usecs;
+
+       /**
+        * Total bandwidth claimed so far for all periodic transfers
+        * in a frame.
+        * This will include a mixture of HS and FS transfers.
+        * Units are microseconds per (micro)frame.
+        * We have a budget per frame and have to schedule
+        * transactions accordingly.
+        * Watch out for the fact that things are actually scheduled for the
+        * "next frame".
+        */
+       uint16_t                frame_usecs[8];
+
+       /**
+        * Frame number read from the core at SOF. The value ranges from 0 to
+        * DWC_HFNUM_MAX_FRNUM.
+        */
+       uint16_t                frame_number;
+
+       /**
+        * Free host channels in the controller. This is a list of
+        * dwc_hc_t items.
+        */
+       struct list_head        free_hc_list;
+
+       /**
+        * Number of available host channels.
+        */
+       int                     available_host_channels;
+
+       /**
+        * Array of pointers to the host channel descriptors. Allows accessing
+        * a host channel descriptor given the host channel number. This is
+        * useful in interrupt handlers.
+        */
+       dwc_hc_t                *hc_ptr_array[MAX_EPS_CHANNELS];
+
+       /**
+        * Buffer to use for any data received during the status phase of a
+        * control transfer. Normally no data is transferred during the status
+        * phase. This buffer is used as a bit bucket. 
+        */
+       uint8_t                 *status_buf;
+
+       /**
+        * DMA address for status_buf.
+        */
+       dma_addr_t              status_buf_dma;
+#define DWC_OTG_HCD_STATUS_BUF_SIZE 64 
+
+       /**
+        * Structure to allow starting the HCD in a non-interrupt context
+        * during an OTG role change.
+        */
+       struct work_struct      start_work;
+       struct usb_hcd          *_p;
+
+       /**
+        * Connection timer. An OTG host must display a message if the device
+        * does not connect. Started when the VBus power is turned on via
+        * sysfs attribute "buspower".
+        */
+        struct timer_list      conn_timer;
+
+       /* Tasket to do a reset */
+       struct tasklet_struct   *reset_tasklet;
+
+#ifdef DEBUG
+       uint32_t                frrem_samples;
+       uint64_t                frrem_accum;
+
+       uint32_t                hfnum_7_samples_a;
+       uint64_t                hfnum_7_frrem_accum_a;
+       uint32_t                hfnum_0_samples_a;
+       uint64_t                hfnum_0_frrem_accum_a;
+       uint32_t                hfnum_other_samples_a;
+       uint64_t                hfnum_other_frrem_accum_a;
+
+       uint32_t                hfnum_7_samples_b;
+       uint64_t                hfnum_7_frrem_accum_b;
+       uint32_t                hfnum_0_samples_b;
+       uint64_t                hfnum_0_frrem_accum_b;
+       uint32_t                hfnum_other_samples_b;
+       uint64_t                hfnum_other_frrem_accum_b;
+#endif
+
+} dwc_otg_hcd_t;
+
+/** Gets the dwc_otg_hcd from a struct usb_hcd */
+static inline dwc_otg_hcd_t *hcd_to_dwc_otg_hcd(struct usb_hcd *hcd)
+{
+       return (dwc_otg_hcd_t *)(hcd->hcd_priv);
+}
+
+/** Gets the struct usb_hcd that contains a dwc_otg_hcd_t. */
+static inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+       return container_of((void *)dwc_otg_hcd, struct usb_hcd, hcd_priv);
+}
+
+/** @name HCD Create/Destroy Functions */
+/** @{ */
+extern int  __devinit dwc_otg_hcd_init(struct device *_dev, dwc_otg_device_t * dwc_otg_device);
+extern void dwc_otg_hcd_remove(struct device *_dev);
+/** @} */
+
+/** @name Linux HC Driver API Functions */
+/** @{ */
+
+extern int dwc_otg_hcd_start(struct usb_hcd *hcd);
+extern void dwc_otg_hcd_stop(struct usb_hcd *hcd);
+extern int dwc_otg_hcd_get_frame_number(struct usb_hcd *hcd);
+extern void dwc_otg_hcd_free(struct usb_hcd *hcd);
+
+extern int dwc_otg_hcd_urb_enqueue(struct usb_hcd *hcd, 
+                                  struct urb *urb, 
+                                  gfp_t mem_flags);
+extern int dwc_otg_hcd_urb_dequeue(struct usb_hcd *hcd, 
+                                  struct urb *urb,
+                                  int status);
+extern irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd);
+
+extern void dwc_otg_hcd_endpoint_disable(struct usb_hcd *hcd,
+                                        struct usb_host_endpoint *ep);
+
+extern int dwc_otg_hcd_hub_status_data(struct usb_hcd *hcd, 
+                                      char *buf);
+extern int dwc_otg_hcd_hub_control(struct usb_hcd *hcd, 
+                                  u16 typeReq, 
+                                  u16 wValue, 
+                                  u16 wIndex, 
+                                  char *buf, 
+                                  u16 wLength);
+
+/** @} */
+
+/** @name Transaction Execution Functions */
+/** @{ */
+extern dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t *_hcd);
+extern void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t *_hcd,
+                                          dwc_otg_transaction_type_e _tr_type);
+extern void dwc_otg_hcd_complete_urb(dwc_otg_hcd_t *_hcd, struct urb *_urb,
+                                    int _status);
+/** @} */
+
+/** @name Interrupt Handler Functions */
+/** @{ */
+extern int32_t dwc_otg_hcd_handle_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_sof_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_rx_status_q_level_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_incomplete_periodic_intr(dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_port_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_conn_id_status_change_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_disconnect_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_n_intr (dwc_otg_hcd_t *_dwc_otg_hcd, uint32_t _num);
+extern int32_t dwc_otg_hcd_handle_session_req_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_wakeup_detected_intr (dwc_otg_hcd_t *_dwc_otg_hcd);
+/** @} */
+
+
+/** @name Schedule Queue Functions */
+/** @{ */
+
+/* Implemented in dwc_otg_hcd_queue.c */
+extern dwc_otg_qh_t *dwc_otg_hcd_qh_create (dwc_otg_hcd_t *_hcd, struct urb *_urb);
+extern void dwc_otg_hcd_qh_init (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, struct urb *_urb);
+extern void dwc_otg_hcd_qh_free (dwc_otg_qh_t *_qh);
+extern int dwc_otg_hcd_qh_add (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh);
+extern void dwc_otg_hcd_qh_remove (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh);
+extern void dwc_otg_hcd_qh_deactivate (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, int sched_csplit);
+extern int dwc_otg_hcd_qh_deferr (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, int delay);
+
+/** Remove and free a QH */
+static inline void dwc_otg_hcd_qh_remove_and_free (dwc_otg_hcd_t *_hcd,
+                                                  dwc_otg_qh_t *_qh)
+{
+       dwc_otg_hcd_qh_remove (_hcd, _qh);
+       dwc_otg_hcd_qh_free (_qh);
+}
+
+/** Allocates memory for a QH structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc (void)
+{
+#ifdef _SC_BUILD_ 
+    return (dwc_otg_qh_t *) kmalloc (sizeof(dwc_otg_qh_t), GFP_ATOMIC);
+#else
+       return (dwc_otg_qh_t *) kmalloc (sizeof(dwc_otg_qh_t), GFP_KERNEL);
+#endif 
+}
+
+extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create (struct urb *urb);
+extern void dwc_otg_hcd_qtd_init (dwc_otg_qtd_t *qtd, struct urb *urb);
+extern int dwc_otg_hcd_qtd_add (dwc_otg_qtd_t *qtd, dwc_otg_hcd_t *dwc_otg_hcd);
+
+/** Allocates memory for a QTD structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc (void)
+{
+#ifdef _SC_BUILD_    
+    return (dwc_otg_qtd_t *) kmalloc (sizeof(dwc_otg_qtd_t), GFP_ATOMIC);
+#else
+       return (dwc_otg_qtd_t *) kmalloc (sizeof(dwc_otg_qtd_t), GFP_KERNEL);
+#endif 
+}
+
+/** Frees the memory for a QTD structure.  QTD should already be removed from
+ * list.
+ * @param[in] _qtd QTD to free.*/
+static inline void dwc_otg_hcd_qtd_free (dwc_otg_qtd_t *_qtd)
+{
+       kfree (_qtd);
+}
+
+/** Removes a QTD from list.
+ * @param[in] _qtd QTD to remove from list. */
+static inline void dwc_otg_hcd_qtd_remove (dwc_otg_qtd_t *_qtd)
+{
+       unsigned long flags;
+       local_irq_save (flags);
+       list_del (&_qtd->qtd_list_entry);
+       local_irq_restore (flags);
+}
+
+/** Remove and free a QTD */
+static inline void dwc_otg_hcd_qtd_remove_and_free (dwc_otg_qtd_t *_qtd)
+{
+       dwc_otg_hcd_qtd_remove (_qtd);
+       dwc_otg_hcd_qtd_free (_qtd);
+}
+
+/** @} */
+
+
+/** @name Internal Functions */
+/** @{ */
+dwc_otg_qh_t *dwc_urb_to_qh(struct urb *_urb);
+void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t *_hcd);
+void dwc_otg_hcd_dump_state(dwc_otg_hcd_t *_hcd);
+/** @} */
+
+
+/** Gets the usb_host_endpoint associated with an URB. */
+static inline struct usb_host_endpoint *dwc_urb_to_endpoint(struct urb *_urb)
+{
+       struct usb_device *dev = _urb->dev;
+       int ep_num = usb_pipeendpoint(_urb->pipe);
+    if (usb_pipein(_urb->pipe))
+        return dev->ep_in[ep_num];
+    else
+        return dev->ep_out[ep_num];
+}
+
+/**
+ * Gets the endpoint number from a _bEndpointAddress argument. The endpoint is
+ * qualified with its direction (possible 32 endpoints per device).
+ */
+#define dwc_ep_addr_to_endpoint(_bEndpointAddress_) \
+       ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \
+                                                     ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4)
+
+/** Gets the QH that contains the list_head */
+#define dwc_list_to_qh(_list_head_ptr_) (container_of(_list_head_ptr_,dwc_otg_qh_t,qh_list_entry))
+
+/** Gets the QTD that contains the list_head */
+#define dwc_list_to_qtd(_list_head_ptr_) (container_of(_list_head_ptr_,dwc_otg_qtd_t,qtd_list_entry))
+
+/** Check if QH is non-periodic  */
+#define dwc_qh_is_non_per(_qh_ptr_) ((_qh_ptr_->ep_type == USB_ENDPOINT_XFER_BULK) || \
+                                     (_qh_ptr_->ep_type == USB_ENDPOINT_XFER_CONTROL))
+
+/** High bandwidth multiplier as encoded in highspeed endpoint descriptors */
+#define dwc_hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
+
+/** Packet size for any kind of endpoint descriptor */
+#define dwc_max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
+
+/**
+ * Returns true if _frame1 is less than or equal to _frame2. The comparison is
+ * done modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the
+ * frame number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_le(uint16_t _frame1, uint16_t _frame2)
+{
+       return ((_frame2 - _frame1) & DWC_HFNUM_MAX_FRNUM) <=
+               (DWC_HFNUM_MAX_FRNUM >> 1);
+}
+
+/**
+ * Returns true if _frame1 is greater than _frame2. The comparison is done
+ * modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the frame
+ * number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_gt(uint16_t _frame1, uint16_t _frame2)
+{
+       return (_frame1 != _frame2) &&
+               (((_frame1 - _frame2) & DWC_HFNUM_MAX_FRNUM) <
+                (DWC_HFNUM_MAX_FRNUM >> 1));
+}
+
+/**
+ * Increments _frame by the amount specified by _inc. The addition is done
+ * modulo DWC_HFNUM_MAX_FRNUM. Returns the incremented value.
+ */
+static inline uint16_t dwc_frame_num_inc(uint16_t _frame, uint16_t _inc)
+{
+       return (_frame + _inc) & DWC_HFNUM_MAX_FRNUM;
+}
+
+static inline uint16_t dwc_full_frame_num (uint16_t _frame)
+{
+       return ((_frame) & DWC_HFNUM_MAX_FRNUM) >> 3;
+}
+
+static inline uint16_t dwc_micro_frame_num (uint16_t _frame)
+{
+       return (_frame) & 0x7;
+}
+
+#ifdef DEBUG
+/**
+ * Macro to sample the remaining PHY clocks left in the current frame. This
+ * may be used during debugging to determine the average time it takes to
+ * execute sections of code. There are two possible sample points, "a" and
+ * "b", so the _letter argument must be one of these values.
+ *
+ * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For
+ * example, "cat /sys/devices/lm0/hcd_frrem".
+ */
+#define dwc_sample_frrem(_hcd, _qh, _letter) \
+{ \
+       hfnum_data_t hfnum; \
+       dwc_otg_qtd_t *qtd; \
+       qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); \
+       if (usb_pipeint(qtd->urb->pipe) && _qh->start_split_frame != 0 && !qtd->complete_split) { \
+               hfnum.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hfnum); \
+               switch (hfnum.b.frnum & 0x7) { \
+               case 7: \
+                       _hcd->hfnum_7_samples_##_letter++; \
+                       _hcd->hfnum_7_frrem_accum_##_letter += hfnum.b.frrem; \
+                       break; \
+               case 0: \
+                       _hcd->hfnum_0_samples_##_letter++; \
+                       _hcd->hfnum_0_frrem_accum_##_letter += hfnum.b.frrem; \
+                       break; \
+               default: \
+                       _hcd->hfnum_other_samples_##_letter++; \
+                       _hcd->hfnum_other_frrem_accum_##_letter += hfnum.b.frrem; \
+                       break; \
+               } \
+       } \
+}
+#else // DEBUG
+#define dwc_sample_frrem(_hcd, _qh, _letter) 
+#endif // DEBUG                
+#endif // __DWC_HCD_H__
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/dwc_otg/dwc_otg_hcd_intr.c
new file mode 100644
index 0000000..834b5e0
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_hcd_intr.c
@@ -0,0 +1,1841 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_intr.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 553126 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+const int erratum_usb09_patched = 0;
+const int deferral_on = 1;
+const int nak_deferral_delay = 8;
+const int nyet_deferral_delay = 1;
+/** @file 
+ * This file contains the implementation of the HCD Interrupt handlers. 
+ */
+
+/** This function handles interrupts for the HCD. */
+int32_t dwc_otg_hcd_handle_intr (dwc_otg_hcd_t *_dwc_otg_hcd)
+{
+       int retval = 0;
+
+        dwc_otg_core_if_t *core_if = _dwc_otg_hcd->core_if;
+        gintsts_data_t gintsts;
+#ifdef DEBUG
+        dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+#endif
+
+       /* Check if HOST Mode */
+        if (dwc_otg_is_host_mode(core_if)) {
+               gintsts.d32 = dwc_otg_read_core_intr(core_if);
+               if (!gintsts.d32) {
+                       return 0;
+               }
+
+#ifdef DEBUG
+               /* Don't print debug message in the interrupt handler on SOF */
+#  ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#  endif
+                       DWC_DEBUGPL (DBG_HCD, "\n");
+#endif
+
+#ifdef DEBUG
+#  ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#  endif
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Interrupt Detected gintsts&gintmsk=0x%08x\n", gintsts.d32);
+#endif
+
+                if (gintsts.b.sofintr) {
+                       retval |= dwc_otg_hcd_handle_sof_intr (_dwc_otg_hcd);
+                }
+                if (gintsts.b.rxstsqlvl) {
+                       retval |= dwc_otg_hcd_handle_rx_status_q_level_intr (_dwc_otg_hcd);
+                }
+                if (gintsts.b.nptxfempty) {
+                       retval |= dwc_otg_hcd_handle_np_tx_fifo_empty_intr (_dwc_otg_hcd);
+               }
+                if (gintsts.b.i2cintr) {
+                       /** @todo Implement i2cintr handler. */
+                }
+               if (gintsts.b.portintr) {
+                       retval |= dwc_otg_hcd_handle_port_intr (_dwc_otg_hcd);
+               }
+               if (gintsts.b.hcintr) {
+                       retval |= dwc_otg_hcd_handle_hc_intr (_dwc_otg_hcd);
+               }
+               if (gintsts.b.ptxfempty) {
+                       retval |= dwc_otg_hcd_handle_perio_tx_fifo_empty_intr (_dwc_otg_hcd);
+               }
+#ifdef DEBUG
+#  ifndef DEBUG_SOF
+               if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#  endif
+               {
+                       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Finished Servicing Interrupts\n");
+                       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintsts=0x%08x\n",
+                                   dwc_read_reg32(&global_regs->gintsts));
+                       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintmsk=0x%08x\n",
+                                   dwc_read_reg32(&global_regs->gintmsk));                
+               }
+#endif
+
+#ifdef DEBUG
+#  ifndef DEBUG_SOF
+       if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#  endif
+               DWC_DEBUGPL (DBG_HCD, "\n");
+#endif
+
+       }
+
+       return retval;
+}
+
+#ifdef DWC_TRACK_MISSED_SOFS
+#warning Compiling code to track missed SOFs
+#define FRAME_NUM_ARRAY_SIZE 1000
+/**
+ * This function is for debug only.
+ */
+static inline void track_missed_sofs(uint16_t _curr_frame_number) {
+       static uint16_t         frame_num_array[FRAME_NUM_ARRAY_SIZE];
+       static uint16_t         last_frame_num_array[FRAME_NUM_ARRAY_SIZE];
+       static int              frame_num_idx = 0;
+       static uint16_t         last_frame_num = DWC_HFNUM_MAX_FRNUM;
+       static int              dumped_frame_num_array = 0;
+       
+       if (frame_num_idx < FRAME_NUM_ARRAY_SIZE) {
+               if ((((last_frame_num + 1) & DWC_HFNUM_MAX_FRNUM) != _curr_frame_number)) {
+                       frame_num_array[frame_num_idx] = _curr_frame_number;
+                       last_frame_num_array[frame_num_idx++] = last_frame_num;
+               }
+       } else if (!dumped_frame_num_array) {
+               int i;
+               printk(KERN_EMERG USB_DWC "Frame     Last Frame\n");
+               printk(KERN_EMERG USB_DWC "-----     ----------\n");
+               for (i = 0; i < FRAME_NUM_ARRAY_SIZE; i++) {
+                       printk(KERN_EMERG USB_DWC "0x%04x    0x%04x\n",
+                              frame_num_array[i], last_frame_num_array[i]);
+               }
+               dumped_frame_num_array = 1;
+       }
+       last_frame_num = _curr_frame_number;
+}
+#endif 
+
+/**
+ * Handles the start-of-frame interrupt in host mode. Non-periodic
+ * transactions may be queued to the DWC_otg controller for the current
+ * (micro)frame. Periodic transactions may be queued to the controller for the
+ * next (micro)frame.
+ */
+int32_t dwc_otg_hcd_handle_sof_intr (dwc_otg_hcd_t *_hcd)
+{
+       hfnum_data_t            hfnum;
+       struct list_head        *qh_entry;
+       dwc_otg_qh_t            *qh;
+       dwc_otg_transaction_type_e tr_type;
+       gintsts_data_t gintsts = {.d32 = 0};
+
+       hfnum.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hfnum);
+
+#ifdef DEBUG_SOF
+       DWC_DEBUGPL(DBG_HCD, "--Start of Frame Interrupt--\n");
+#endif
+
+       _hcd->frame_number = hfnum.b.frnum;
+
+#ifdef DEBUG
+       _hcd->frrem_accum += hfnum.b.frrem;
+       _hcd->frrem_samples++;
+#endif
+
+#ifdef DWC_TRACK_MISSED_SOFS
+       track_missed_sofs(_hcd->frame_number);
+#endif 
+
+       /* Determine whether any periodic QHs should be executed. */
+       qh_entry = _hcd->periodic_sched_inactive.next;
+       while (qh_entry != &_hcd->periodic_sched_inactive) {
+               qh = list_entry(qh_entry, dwc_otg_qh_t, qh_list_entry);
+               qh_entry = qh_entry->next;
+               if (dwc_frame_num_le(qh->sched_frame, _hcd->frame_number)) {
+                       /* 
+                        * Move QH to the ready list to be executed next
+                        * (micro)frame.
+                        */
+                       list_move(&qh->qh_list_entry, &_hcd->periodic_sched_ready);
+               }
+       }
+
+       tr_type = dwc_otg_hcd_select_transactions(_hcd);
+       if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+               dwc_otg_hcd_queue_transactions(_hcd, tr_type);
+       }
+
+       /* Clear interrupt */
+       gintsts.b.sofintr = 1;
+       dwc_write_reg32(&_hcd->core_if->core_global_regs->gintsts, gintsts.d32);
+
+       return 1;
+}
+
+/** Handles the Rx Status Queue Level Interrupt, which indicates that there is at
+ * least one packet in the Rx FIFO.  The packets are moved from the FIFO to
+ * memory if the DWC_otg controller is operating in Slave mode. */
+int32_t dwc_otg_hcd_handle_rx_status_q_level_intr (dwc_otg_hcd_t *_dwc_otg_hcd)
+{
+       host_grxsts_data_t grxsts;
+       dwc_hc_t *hc = NULL;
+
+       DWC_DEBUGPL(DBG_HCD, "--RxStsQ Level Interrupt--\n");
+
+       grxsts.d32 = dwc_read_reg32(&_dwc_otg_hcd->core_if->core_global_regs->grxstsp);
+
+       hc = _dwc_otg_hcd->hc_ptr_array[grxsts.b.chnum];
+
+       /* Packet Status */
+       DWC_DEBUGPL(DBG_HCDV, "    Ch num = %d\n", grxsts.b.chnum);
+       DWC_DEBUGPL(DBG_HCDV, "    Count = %d\n", grxsts.b.bcnt);
+       DWC_DEBUGPL(DBG_HCDV, "    DPID = %d, hc.dpid = %d\n", grxsts.b.dpid, hc->data_pid_start);
+       DWC_DEBUGPL(DBG_HCDV, "    PStatus = %d\n", grxsts.b.pktsts);
+       
+       switch (grxsts.b.pktsts) {
+       case DWC_GRXSTS_PKTSTS_IN:
+               /* Read the data into the host buffer. */
+               if (grxsts.b.bcnt > 0) {
+                       dwc_otg_read_packet(_dwc_otg_hcd->core_if, 
+                                           hc->xfer_buff, 
+                                           grxsts.b.bcnt);
+
+                       /* Update the HC fields for the next packet received. */
+                       hc->xfer_count += grxsts.b.bcnt;
+                       hc->xfer_buff += grxsts.b.bcnt;
+               }
+               
+       case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+       case DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
+       case DWC_GRXSTS_PKTSTS_CH_HALTED:
+               /* Handled in interrupt, just ignore data */
+               break;
+       default:
+               DWC_ERROR ("RX_STS_Q Interrupt: Unknown status %d\n", grxsts.b.pktsts);
+               break;
+       }
+       
+       return 1;
+}
+
+/** This interrupt occurs when the non-periodic Tx FIFO is half-empty. More
+ * data packets may be written to the FIFO for OUT transfers. More requests
+ * may be written to the non-periodic request queue for IN transfers. This
+ * interrupt is enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr (dwc_otg_hcd_t *_dwc_otg_hcd)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Non-Periodic TxFIFO Empty Interrupt--\n");
+       dwc_otg_hcd_queue_transactions(_dwc_otg_hcd,
+                                      DWC_OTG_TRANSACTION_NON_PERIODIC);
+       return 1;
+}
+
+/** This interrupt occurs when the periodic Tx FIFO is half-empty. More data
+ * packets may be written to the FIFO for OUT transfers. More requests may be
+ * written to the periodic request queue for IN transfers. This interrupt is
+ * enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr (dwc_otg_hcd_t *_dwc_otg_hcd)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Periodic TxFIFO Empty Interrupt--\n");  
+       dwc_otg_hcd_queue_transactions(_dwc_otg_hcd,
+                                      DWC_OTG_TRANSACTION_PERIODIC);
+       return 1;
+}
+
+/** There are multiple conditions that can cause a port interrupt. This function
+ * determines which interrupt conditions have occurred and handles them
+ * appropriately. */
+int32_t dwc_otg_hcd_handle_port_intr (dwc_otg_hcd_t *_dwc_otg_hcd)
+{
+       int retval = 0;
+       hprt0_data_t hprt0;
+       hprt0_data_t hprt0_modify;
+
+       hprt0.d32 = dwc_read_reg32(_dwc_otg_hcd->core_if->host_if->hprt0);
+       hprt0_modify.d32 = dwc_read_reg32(_dwc_otg_hcd->core_if->host_if->hprt0);
+
+       /* Clear appropriate bits in HPRT0 to clear the interrupt bit in
+        * GINTSTS */
+
+       hprt0_modify.b.prtena = 0;
+       hprt0_modify.b.prtconndet = 0; 
+       hprt0_modify.b.prtenchng = 0;
+       hprt0_modify.b.prtovrcurrchng = 0; 
+
+       /* Port Connect Detected 
+        * Set flag and clear if detected */
+       if (hprt0.b.prtconndet) {
+               DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x "
+                           "Port Connect Detected--\n", hprt0.d32);
+               _dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+               _dwc_otg_hcd->flags.b.port_connect_status = 1;
+               hprt0_modify.b.prtconndet = 1;
+
+                /* B-Device has connected, Delete the connection timer.  */
+                del_timer( &_dwc_otg_hcd->conn_timer );
+
+               /* The Hub driver asserts a reset when it sees port connect
+                * status change flag */
+               retval |= 1;
+       }
+
+       /* Port Enable Changed
+        * Clear if detected - Set internal flag if disabled */
+       if (hprt0.b.prtenchng) {
+               DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
+                           "Port Enable Changed--\n", hprt0.d32);
+               hprt0_modify.b.prtenchng = 1;
+               if (hprt0.b.prtena == 1) {
+                       int do_reset = 0;
+                       dwc_otg_core_params_t *params = _dwc_otg_hcd->core_if->core_params;
+                       dwc_otg_core_global_regs_t *global_regs = _dwc_otg_hcd->core_if->core_global_regs;
+                       dwc_otg_host_if_t *host_if = _dwc_otg_hcd->core_if->host_if;
+
+                       /* Check if we need to adjust the PHY clock speed for
+                        * low power and adjust it */
+                       if (params->host_support_fs_ls_low_power)
+                       {
+                               gusbcfg_data_t usbcfg;
+
+                               usbcfg.d32 = dwc_read_reg32 (&global_regs->gusbcfg);
+
+                               if ((hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED) ||
+                                   (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED))
+                               {
+                                       /* 
+                                        * Low power 
+                                        */
+                                       hcfg_data_t hcfg;
+                                       if (usbcfg.b.phylpwrclksel == 0) {
+                                               /* Set PHY low power clock select for FS/LS devices */
+                                               usbcfg.b.phylpwrclksel = 1;
+                                               dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+                                               do_reset = 1;
+                                       }
+
+                                       hcfg.d32 = dwc_read_reg32(&host_if->host_global_regs->hcfg);
+
+                                       if ((hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED) && 
+                                           (params->host_ls_low_power_phy_clk ==
+                                            DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ))
+                                       {
+                                               /* 6 MHZ */
+                                               DWC_DEBUGPL(DBG_CIL, "FS_PHY programming HCFG to 6 MHz (Low Power)\n");
+                                               if (hcfg.b.fslspclksel != DWC_HCFG_6_MHZ) {
+                                                       hcfg.b.fslspclksel = DWC_HCFG_6_MHZ;
+                                                       dwc_write_reg32(&host_if->host_global_regs->hcfg,
+                                                                       hcfg.d32);
+                                                       do_reset = 1;
+                                               }
+                                       }
+                                       else {
+                                               /* 48 MHZ */
+                                               DWC_DEBUGPL(DBG_CIL, "FS_PHY programming HCFG to 48 MHz ()\n");
+                                               if (hcfg.b.fslspclksel != DWC_HCFG_48_MHZ) {
+                                                       hcfg.b.fslspclksel = DWC_HCFG_48_MHZ;
+                                                       dwc_write_reg32(&host_if->host_global_regs->hcfg,
+                                                                       hcfg.d32);
+                                                       do_reset = 1;
+                                               }
+                                       }
+                               }
+                               else {
+                                       /* 
+                                        * Not low power 
+                                        */
+                                       if (usbcfg.b.phylpwrclksel == 1) {
+                                               usbcfg.b.phylpwrclksel = 0;
+                                               dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+                                               do_reset = 1;
+                                       }
+                               }
+
+                               if (do_reset) {
+                                       tasklet_schedule(_dwc_otg_hcd->reset_tasklet);
+                               }
+                       }
+                       
+                       if (!do_reset) {
+                               /* Port has been enabled set the reset change flag */
+                               _dwc_otg_hcd->flags.b.port_reset_change = 1;
+                       }
+
+               } else {
+                       _dwc_otg_hcd->flags.b.port_enable_change = 1;
+               }
+               retval |= 1;
+       }
+
+       /** Overcurrent Change Interrupt */
+       if (hprt0.b.prtovrcurrchng) {
+               DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
+                           "Port Overcurrent Changed--\n", hprt0.d32);
+               _dwc_otg_hcd->flags.b.port_over_current_change = 1;
+               hprt0_modify.b.prtovrcurrchng = 1; 
+               retval |= 1;
+       }
+
+       /* Clear Port Interrupts */
+       dwc_write_reg32(_dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
+
+       return retval;
+}
+
+
+/** This interrupt indicates that one or more host channels has a pending
+ * interrupt. There are multiple conditions that can cause each host channel
+ * interrupt. This function determines which conditions have occurred for each
+ * host channel interrupt and handles them appropriately. */
+int32_t dwc_otg_hcd_handle_hc_intr (dwc_otg_hcd_t *_dwc_otg_hcd)
+{
+       int i;
+       int retval = 0;
+       haint_data_t haint;
+
+       /* Clear appropriate bits in HCINTn to clear the interrupt bit in
+        * GINTSTS */
+
+       haint.d32 = dwc_otg_read_host_all_channels_intr(_dwc_otg_hcd->core_if);
+
+       for (i=0; i<_dwc_otg_hcd->core_if->core_params->host_channels; i++) {
+               if (haint.b2.chint & (1 << i)) {
+                       retval |= dwc_otg_hcd_handle_hc_n_intr (_dwc_otg_hcd, i);
+               }
+       }
+
+       return retval;
+}
+
+/* Macro used to clear one channel interrupt */
+#define clear_hc_int(_hc_regs_,_intr_) \
+do { \
+       hcint_data_t hcint_clear = {.d32 = 0}; \
+       hcint_clear.b._intr_ = 1; \
+       dwc_write_reg32(&((_hc_regs_)->hcint), hcint_clear.d32); \
+} while (0)
+
+/*
+ * Macro used to disable one channel interrupt. Channel interrupts are
+ * disabled when the channel is halted or released by the interrupt handler.
+ * There is no need to handle further interrupts of that type until the
+ * channel is re-assigned. In fact, subsequent handling may cause crashes
+ * because the channel structures are cleaned up when the channel is released.
+ */
+#define disable_hc_int(_hc_regs_,_intr_) \
+do { \
+       hcintmsk_data_t hcintmsk = {.d32 = 0}; \
+       hcintmsk.b._intr_ = 1; \
+       dwc_modify_reg32(&((_hc_regs_)->hcintmsk), hcintmsk.d32, 0); \
+} while (0)
+
+/**
+ * Gets the actual length of a transfer after the transfer halts. _halt_status
+ * holds the reason for the halt.
+ *
+ * For IN transfers where _halt_status is DWC_OTG_HC_XFER_COMPLETE, 
+ * *_short_read is set to 1 upon return if less than the requested
+ * number of bytes were transferred. Otherwise, *_short_read is set to 0 upon
+ * return. _short_read may also be NULL on entry, in which case it remains
+ * unchanged.
+ */
+static uint32_t get_actual_xfer_length(dwc_hc_t *_hc,
+                                      dwc_otg_hc_regs_t *_hc_regs,
+                                      dwc_otg_qtd_t *_qtd,
+                                      dwc_otg_halt_status_e _halt_status,
+                                      int *_short_read)
+{
+       hctsiz_data_t   hctsiz;
+       uint32_t        length;
+
+       if (_short_read != NULL) {
+               *_short_read = 0;
+       }
+       hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+
+       if (_halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+               if (_hc->ep_is_in) {
+                       length = _hc->xfer_len - hctsiz.b.xfersize;
+                       if (_short_read != NULL) {
+                               *_short_read = (hctsiz.b.xfersize != 0);
+                       }
+               } else if (_hc->qh->do_split) {
+                       length = _qtd->ssplit_out_xfer_count;
+               } else {
+                       length = _hc->xfer_len;
+               }
+       } else {
+               /*
+                * Must use the hctsiz.pktcnt field to determine how much data
+                * has been transferred. This field reflects the number of
+                * packets that have been transferred via the USB. This is
+                * always an integral number of packets if the transfer was
+                * halted before its normal completion. (Can't use the
+                * hctsiz.xfersize field because that reflects the number of
+                * bytes transferred via the AHB, not the USB).
+                */
+               length = (_hc->start_pkt_count - hctsiz.b.pktcnt) * _hc->max_packet;
+       }
+
+       return length;
+}
+
+/**
+ * Updates the state of the URB after a Transfer Complete interrupt on the
+ * host channel. Updates the actual_length field of the URB based on the
+ * number of bytes transferred via the host channel. Sets the URB status
+ * if the data transfer is finished. 
+ *
+ * @return 1 if the data transfer specified by the URB is completely finished,
+ * 0 otherwise.
+ */
+static int update_urb_state_xfer_comp(dwc_hc_t *_hc,
+                                     dwc_otg_hc_regs_t * _hc_regs, struct urb *_urb,
+                                     dwc_otg_qtd_t * _qtd, int *status)
+{
+       int             xfer_done = 0;
+       int             short_read = 0;
+
+       _urb->actual_length += get_actual_xfer_length(_hc, _hc_regs, _qtd,
+                                                     DWC_OTG_HC_XFER_COMPLETE,
+                                                     &short_read);
+
+       if (short_read || (_urb->actual_length == _urb->transfer_buffer_length)) {
+               xfer_done = 1;
+               if (short_read && (_urb->transfer_flags & URB_SHORT_NOT_OK)) {
+                       *status = -EREMOTEIO;
+               } else {
+                       *status = 0;
+               }
+       }
+
+#ifdef DEBUG
+       {
+               hctsiz_data_t   hctsiz;
+               hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+               DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+                           __func__, (_hc->ep_is_in ? "IN" : "OUT"), _hc->hc_num);
+               DWC_DEBUGPL(DBG_HCDV, "  hc->xfer_len %d\n", _hc->xfer_len);
+               DWC_DEBUGPL(DBG_HCDV, "  hctsiz.xfersize %d\n", hctsiz.b.xfersize);
+               DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
+                           _urb->transfer_buffer_length);
+               DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n", _urb->actual_length);
+               DWC_DEBUGPL(DBG_HCDV, "  short_read %d, xfer_done %d\n",
+                           short_read, xfer_done);
+       }
+#endif
+
+       return xfer_done;
+}
+
+/*
+ * Save the starting data toggle for the next transfer. The data toggle is
+ * saved in the QH for non-control transfers and it's saved in the QTD for
+ * control transfers.
+ */
+static void save_data_toggle(dwc_hc_t *_hc,
+                            dwc_otg_hc_regs_t *_hc_regs,
+                            dwc_otg_qtd_t *_qtd)
+{
+       hctsiz_data_t hctsiz;
+       hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+
+       if (_hc->ep_type != DWC_OTG_EP_TYPE_CONTROL) {
+               dwc_otg_qh_t *qh = _hc->qh;
+               if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+                       qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+               } else {
+                       qh->data_toggle = DWC_OTG_HC_PID_DATA1;
+               }
+       } else {
+               if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+                       _qtd->data_toggle = DWC_OTG_HC_PID_DATA0;
+               } else {
+                       _qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+               }
+       }
+}
+
+/**
+ * Frees the first QTD in the QH's list if free_qtd is 1. For non-periodic
+ * QHs, removes the QH from the active non-periodic schedule. If any QTDs are
+ * still linked to the QH, the QH is added to the end of the inactive
+ * non-periodic schedule. For periodic QHs, removes the QH from the periodic
+ * schedule if no more QTDs are linked to the QH.
+ */
+static void deactivate_qh(dwc_otg_hcd_t *_hcd,
+                         dwc_otg_qh_t *_qh,
+                         int free_qtd)
+{
+       int continue_split = 0;
+       dwc_otg_qtd_t *qtd;
+
+       DWC_DEBUGPL(DBG_HCDV, "  %s(%p,%p,%d)\n", __func__, _hcd, _qh, free_qtd);
+
+       qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry);
+
+       if (qtd->complete_split) {
+               continue_split = 1;
+       } 
+       else if ((qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID) ||
+                (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END))
+       {
+               continue_split = 1;
+       }
+
+       if (free_qtd) {
+               /*
+                * Note that this was previously a call to
+                * dwc_otg_hcd_qtd_remove_and_free(qtd), which frees the qtd.
+                * However, that call frees the qtd memory, and we continue in the
+                * interrupt logic to access it many more times, including writing
+                * to it.  With slub debugging on, it is clear that we were writing
+                * to memory we had freed.
+                * Call this instead, and now I have moved the freeing of the memory to
+                * the end of processing this interrupt.
+                */
+               //dwc_otg_hcd_qtd_remove_and_free(qtd);
+               dwc_otg_hcd_qtd_remove(qtd);
+               
+               continue_split = 0;
+       }
+
+       _qh->channel = NULL;
+       _qh->qtd_in_process = NULL;
+       dwc_otg_hcd_qh_deactivate(_hcd, _qh, continue_split);
+}
+
+/**
+ * Updates the state of an Isochronous URB when the transfer is stopped for
+ * any reason. The fields of the current entry in the frame descriptor array
+ * are set based on the transfer state and the input _halt_status. Completes
+ * the Isochronous URB if all the URB frames have been completed.
+ *
+ * @return DWC_OTG_HC_XFER_COMPLETE if there are more frames remaining to be
+ * transferred in the URB. Otherwise return DWC_OTG_HC_XFER_URB_COMPLETE.
+ */
+static dwc_otg_halt_status_e
+update_isoc_urb_state(dwc_otg_hcd_t *_hcd,
+                     dwc_hc_t *_hc,
+                     dwc_otg_hc_regs_t *_hc_regs,
+                     dwc_otg_qtd_t *_qtd,
+                     dwc_otg_halt_status_e _halt_status)
+{
+       struct urb *urb = _qtd->urb;
+       dwc_otg_halt_status_e ret_val = _halt_status;
+       struct usb_iso_packet_descriptor *frame_desc;
+
+       frame_desc = &urb->iso_frame_desc[_qtd->isoc_frame_index];
+       switch (_halt_status) {
+       case DWC_OTG_HC_XFER_COMPLETE:
+               frame_desc->status = 0;
+               frame_desc->actual_length =
+                       get_actual_xfer_length(_hc, _hc_regs, _qtd,
+                                              _halt_status, NULL);
+               break;
+       case DWC_OTG_HC_XFER_FRAME_OVERRUN:
+               urb->error_count++;
+               if (_hc->ep_is_in) {
+                       frame_desc->status = -ENOSR;
+               } else {
+                       frame_desc->status = -ECOMM;
+               }
+               frame_desc->actual_length = 0;
+               break;
+       case DWC_OTG_HC_XFER_BABBLE_ERR:
+               urb->error_count++;
+               frame_desc->status = -EOVERFLOW;
+               /* Don't need to update actual_length in this case. */
+               break;
+       case DWC_OTG_HC_XFER_XACT_ERR:
+               urb->error_count++;
+               frame_desc->status = -EPROTO;
+               frame_desc->actual_length =
+                       get_actual_xfer_length(_hc, _hc_regs, _qtd,
+                                              _halt_status, NULL);
+       default:
+               DWC_ERROR("%s: Unhandled _halt_status (%d)\n", __func__,
+                         _halt_status);
+               BUG();
+               break;
+       }
+
+       if (++_qtd->isoc_frame_index == urb->number_of_packets) {
+               /*
+                * urb->status is not used for isoc transfers. 
+                * The individual frame_desc statuses are used instead.
+                */
+               dwc_otg_hcd_complete_urb(_hcd, urb, 0);
+               ret_val = DWC_OTG_HC_XFER_URB_COMPLETE;
+       } else {
+               ret_val = DWC_OTG_HC_XFER_COMPLETE;
+       }
+
+       return ret_val;
+}
+
+/**
+ * Releases a host channel for use by other transfers. Attempts to select and
+ * queue more transactions since at least one host channel is available.
+ *
+ * @param _hcd The HCD state structure.
+ * @param _hc The host channel to release.
+ * @param _qtd The QTD associated with the host channel. This QTD may be freed
+ * if the transfer is complete or an error has occurred.
+ * @param _halt_status Reason the channel is being released. This status
+ * determines the actions taken by this function.
+ */
+static void release_channel(dwc_otg_hcd_t *_hcd,
+                           dwc_hc_t *_hc,
+                           dwc_otg_qtd_t *_qtd,
+                           dwc_otg_halt_status_e _halt_status,
+                               int *must_free)
+{
+       dwc_otg_transaction_type_e tr_type;
+       int free_qtd;
+       dwc_otg_qh_t * _qh;
+       int deact = 1;
+       int retry_delay = 1;
+       unsigned long flags;
+
+       DWC_DEBUGPL(DBG_HCDV, "  %s: channel %d, halt_status %d\n", __func__,
+                     _hc->hc_num, _halt_status);
+
+       switch (_halt_status) {
+       case DWC_OTG_HC_XFER_NYET:
+       case DWC_OTG_HC_XFER_NAK:
+               if (_halt_status == DWC_OTG_HC_XFER_NYET) {
+                       retry_delay = nyet_deferral_delay;
+               } else {
+                       retry_delay = nak_deferral_delay;
+               }
+               free_qtd = 0;
+               if (deferral_on && _hc->do_split) {
+                       _qh = _hc->qh;
+                       if (_qh) {
+                               deact = dwc_otg_hcd_qh_deferr(_hcd, _qh , retry_delay);
+                       }
+               }
+               break;
+       case DWC_OTG_HC_XFER_URB_COMPLETE:
+               free_qtd = 1;
+               break;
+       case DWC_OTG_HC_XFER_AHB_ERR:
+       case DWC_OTG_HC_XFER_STALL:
+       case DWC_OTG_HC_XFER_BABBLE_ERR:
+               free_qtd = 1;
+               break;
+       case DWC_OTG_HC_XFER_XACT_ERR:
+               if (_qtd->error_count >= 3) {
+                       DWC_DEBUGPL(DBG_HCDV, "  Complete URB with transaction error\n");
+                       free_qtd = 1;
+                       //_qtd->urb->status = -EPROTO;
+                       dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EPROTO);
+               } else {
+                       free_qtd = 0;
+               }
+               break;
+       case DWC_OTG_HC_XFER_URB_DEQUEUE:
+               /*
+                * The QTD has already been removed and the QH has been
+                * deactivated. Don't want to do anything except release the
+                * host channel and try to queue more transfers.
+                */
+               goto cleanup;
+       case DWC_OTG_HC_XFER_NO_HALT_STATUS:
+               DWC_ERROR("%s: No halt_status, channel %d\n", __func__, _hc->hc_num);
+               free_qtd = 0;
+               break;
+       default:
+               free_qtd = 0;
+               break;
+       }
+       if (free_qtd) {
+               /* Only change must_free to true (do not set to zero here -- it is
+                * pre-initialized to zero).
+                */
+               *must_free = 1;
+       }
+       if (deact) {
+       deactivate_qh(_hcd, _hc->qh, free_qtd);
+       }
+ cleanup:
+       /*
+        * Release the host channel for use by other transfers. The cleanup
+        * function clears the channel interrupt enables and conditions, so
+        * there's no need to clear the Channel Halted interrupt separately.
+        */
+       dwc_otg_hc_cleanup(_hcd->core_if, _hc);
+       list_add_tail(&_hc->hc_list_entry, &_hcd->free_hc_list);
+
+       local_irq_save(flags);
+       _hcd->available_host_channels++;
+       local_irq_restore(flags);
+       /* Try to queue more transfers now that there's a free channel, */
+       /* unless erratum_usb09_patched is set */
+       if (!erratum_usb09_patched) {
+       tr_type = dwc_otg_hcd_select_transactions(_hcd);
+       if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+               dwc_otg_hcd_queue_transactions(_hcd, tr_type);
+               }
+       }
+}
+
+/**
+ * Halts a host channel. If the channel cannot be halted immediately because
+ * the request queue is full, this function ensures that the FIFO empty
+ * interrupt for the appropriate queue is enabled so that the halt request can
+ * be queued when there is space in the request queue.
+ *
+ * This function may also be called in DMA mode. In that case, the channel is
+ * simply released since the core always halts the channel automatically in
+ * DMA mode.
+ */
+static void halt_channel(dwc_otg_hcd_t *_hcd,
+                        dwc_hc_t *_hc,
+                        dwc_otg_qtd_t *_qtd,
+                        dwc_otg_halt_status_e _halt_status, int *must_free)
+{
+       if (_hcd->core_if->dma_enable) {
+               release_channel(_hcd, _hc, _qtd, _halt_status, must_free);
+               return;
+       }
+
+       /* Slave mode processing... */
+       dwc_otg_hc_halt(_hcd->core_if, _hc, _halt_status);
+
+       if (_hc->halt_on_queue) {
+               gintmsk_data_t gintmsk = {.d32 = 0};
+               dwc_otg_core_global_regs_t *global_regs;
+               global_regs = _hcd->core_if->core_global_regs;
+
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+                   _hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+                       /*
+                        * Make sure the Non-periodic Tx FIFO empty interrupt
+                        * is enabled so that the non-periodic schedule will
+                        * be processed.
+                        */
+                       gintmsk.b.nptxfempty = 1;
+                       dwc_modify_reg32(&global_regs->gintmsk, 0, gintmsk.d32);
+               } else {
+                       /*
+                        * Move the QH from the periodic queued schedule to
+                        * the periodic assigned schedule. This allows the
+                        * halt to be queued when the periodic schedule is
+                        * processed.
+                        */
+                       list_move(&_hc->qh->qh_list_entry,
+                                 &_hcd->periodic_sched_assigned);
+
+                       /*
+                        * Make sure the Periodic Tx FIFO Empty interrupt is
+                        * enabled so that the periodic schedule will be
+                        * processed.
+                        */
+                       gintmsk.b.ptxfempty = 1;
+                       dwc_modify_reg32(&global_regs->gintmsk, 0, gintmsk.d32);
+               }
+       }
+}
+
+/**
+ * Performs common cleanup for non-periodic transfers after a Transfer
+ * Complete interrupt. This function should be called after any endpoint type
+ * specific handling is finished to release the host channel.
+ */
+static void complete_non_periodic_xfer(dwc_otg_hcd_t *_hcd,
+                                      dwc_hc_t *_hc,
+                                      dwc_otg_hc_regs_t *_hc_regs,
+                                      dwc_otg_qtd_t *_qtd,
+                                      dwc_otg_halt_status_e _halt_status, int *must_free)
+{
+       hcint_data_t hcint;
+
+       _qtd->error_count = 0;
+
+       hcint.d32 = dwc_read_reg32(&_hc_regs->hcint);
+       if (hcint.b.nyet) {
+               /*
+                * Got a NYET on the last transaction of the transfer. This
+                * means that the endpoint should be in the PING state at the
+                * beginning of the next transfer.
+                */
+               _hc->qh->ping_state = 1;
+               clear_hc_int(_hc_regs,nyet);
+       }
+
+       /*
+        * Always halt and release the host channel to make it available for
+        * more transfers. There may still be more phases for a control
+        * transfer or more data packets for a bulk transfer at this point,
+        * but the host channel is still halted. A channel will be reassigned
+        * to the transfer when the non-periodic schedule is processed after
+        * the channel is released. This allows transactions to be queued
+        * properly via dwc_otg_hcd_queue_transactions, which also enables the
+        * Tx FIFO Empty interrupt if necessary.
+        */
+       if (_hc->ep_is_in) {
+               /*
+                * IN transfers in Slave mode require an explicit disable to
+                * halt the channel. (In DMA mode, this call simply releases
+                * the channel.)
+                */
+           halt_channel(_hcd, _hc, _qtd, _halt_status, must_free);
+       } else {
+               /*
+                * The channel is automatically disabled by the core for OUT
+                * transfers in Slave mode.
+                */
+           release_channel(_hcd, _hc, _qtd, _halt_status, must_free);
+       }
+}
+
+/**
+ * Performs common cleanup for periodic transfers after a Transfer Complete
+ * interrupt. This function should be called after any endpoint type specific
+ * handling is finished to release the host channel.
+ */
+static void complete_periodic_xfer(dwc_otg_hcd_t *_hcd,
+                                  dwc_hc_t *_hc,
+                                  dwc_otg_hc_regs_t *_hc_regs,
+                                  dwc_otg_qtd_t *_qtd,
+                                  dwc_otg_halt_status_e _halt_status, int *must_free)
+{
+       hctsiz_data_t hctsiz;
+       _qtd->error_count = 0;
+               
+       hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+       if (!_hc->ep_is_in || hctsiz.b.pktcnt == 0) {
+               /* Core halts channel in these cases. */
+           release_channel(_hcd, _hc, _qtd, _halt_status, must_free);
+       } else {
+               /* Flush any outstanding requests from the Tx queue. */
+           halt_channel(_hcd, _hc, _qtd, _halt_status, must_free);
+       }
+}
+
+/**
+ * Handles a host channel Transfer Complete interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xfercomp_intr(dwc_otg_hcd_t *_hcd,
+                                      dwc_hc_t *_hc,
+                                      dwc_otg_hc_regs_t *_hc_regs,
+                                      dwc_otg_qtd_t *_qtd, int *must_free)
+{
+       int                     urb_xfer_done;
+       dwc_otg_halt_status_e   halt_status = DWC_OTG_HC_XFER_COMPLETE;
+       struct urb              *urb = _qtd->urb;
+       int                     pipe_type = usb_pipetype(urb->pipe);
+       int status = -EINPROGRESS;
+
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "Transfer Complete--\n", _hc->hc_num);
+
+       /* 
+        * Handle xfer complete on CSPLIT.
+        */
+       if (_hc->qh->do_split) {
+               _qtd->complete_split = 0;
+       }
+
+       /* Update the QTD and URB states. */
+       switch (pipe_type) {
+       case PIPE_CONTROL:
+               switch (_qtd->control_phase) {
+               case DWC_OTG_CONTROL_SETUP:
+                       if (urb->transfer_buffer_length > 0) {
+                               _qtd->control_phase = DWC_OTG_CONTROL_DATA;
+                       } else {
+                               _qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+                       }
+                       DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction done\n");
+                       halt_status = DWC_OTG_HC_XFER_COMPLETE;
+                       break;
+               case DWC_OTG_CONTROL_DATA: {
+                       urb_xfer_done = update_urb_state_xfer_comp(_hc, _hc_regs,urb, _qtd, &status);
+                       if (urb_xfer_done) {
+                               _qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+                               DWC_DEBUGPL(DBG_HCDV, "  Control data transfer done\n");
+                       } else {
+                               save_data_toggle(_hc, _hc_regs, _qtd);
+                       }
+                       halt_status = DWC_OTG_HC_XFER_COMPLETE;
+                       break;
+               }
+               case DWC_OTG_CONTROL_STATUS:
+                       DWC_DEBUGPL(DBG_HCDV, "  Control transfer complete\n");
+                       if (status == -EINPROGRESS) {
+                               status = 0;
+                       }
+                       dwc_otg_hcd_complete_urb(_hcd, urb, status);
+                       halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+                       break;
+               }
+
+               complete_non_periodic_xfer(_hcd, _hc, _hc_regs, _qtd,
+                                            halt_status, must_free);
+               break;
+       case PIPE_BULK:
+               DWC_DEBUGPL(DBG_HCDV, "  Bulk transfer complete\n");
+               urb_xfer_done = update_urb_state_xfer_comp(_hc, _hc_regs, urb, _qtd, &status);
+               if (urb_xfer_done) {
+                       dwc_otg_hcd_complete_urb(_hcd, urb, status);
+                       halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+               } else {
+                       halt_status = DWC_OTG_HC_XFER_COMPLETE;
+               }
+                       
+               save_data_toggle(_hc, _hc_regs, _qtd);
+               complete_non_periodic_xfer(_hcd, _hc, _hc_regs, _qtd,halt_status, must_free);
+               break;
+       case PIPE_INTERRUPT:
+               DWC_DEBUGPL(DBG_HCDV, "  Interrupt transfer complete\n");
+               update_urb_state_xfer_comp(_hc, _hc_regs, urb, _qtd, &status);
+
+               /*
+                * Interrupt URB is done on the first transfer complete
+                * interrupt.
+                */
+           dwc_otg_hcd_complete_urb(_hcd, urb, status);
+               save_data_toggle(_hc, _hc_regs, _qtd);
+               complete_periodic_xfer(_hcd, _hc, _hc_regs, _qtd,
+                                       DWC_OTG_HC_XFER_URB_COMPLETE, must_free);
+               break;
+       case PIPE_ISOCHRONOUS:
+               DWC_DEBUGPL(DBG_HCDV,  "  Isochronous transfer complete\n");
+               if (_qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_ALL)
+               {
+                       halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd,
+                                                           DWC_OTG_HC_XFER_COMPLETE);
+               }
+               complete_periodic_xfer(_hcd, _hc, _hc_regs, _qtd, halt_status, must_free);
+               break;
+       }
+
+        disable_hc_int(_hc_regs,xfercompl);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel STALL interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_stall_intr(dwc_otg_hcd_t *_hcd,
+                                   dwc_hc_t *_hc,
+                                   dwc_otg_hc_regs_t *_hc_regs,
+                                   dwc_otg_qtd_t *_qtd, int *must_free)
+{
+       struct urb *urb = _qtd->urb;
+       int pipe_type = usb_pipetype(urb->pipe);
+
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "STALL Received--\n", _hc->hc_num);
+
+       if (pipe_type == PIPE_CONTROL) {
+               dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EPIPE);
+       }
+
+       if (pipe_type == PIPE_BULK || pipe_type == PIPE_INTERRUPT) {
+               dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EPIPE);
+               /*
+                * USB protocol requires resetting the data toggle for bulk
+                * and interrupt endpoints when a CLEAR_FEATURE(ENDPOINT_HALT)
+                * setup command is issued to the endpoint. Anticipate the
+                * CLEAR_FEATURE command since a STALL has occurred and reset
+                * the data toggle now.
+                */
+               _hc->qh->data_toggle = 0;
+       }
+
+       halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_STALL, must_free);
+       disable_hc_int(_hc_regs,stall);
+
+       return 1;
+}
+
+/*
+ * Updates the state of the URB when a transfer has been stopped due to an
+ * abnormal condition before the transfer completes. Modifies the
+ * actual_length field of the URB to reflect the number of bytes that have
+ * actually been transferred via the host channel.
+ */
+static void update_urb_state_xfer_intr(dwc_hc_t *_hc,
+                                      dwc_otg_hc_regs_t *_hc_regs,
+                                      struct urb *_urb,
+                                      dwc_otg_qtd_t *_qtd,
+                                      dwc_otg_halt_status_e _halt_status)
+{
+       uint32_t bytes_transferred = get_actual_xfer_length(_hc, _hc_regs, _qtd,
+                                                           _halt_status, NULL);
+       _urb->actual_length += bytes_transferred;
+
+#ifdef DEBUG
+       {
+               hctsiz_data_t   hctsiz;
+               hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+               DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+                           __func__, (_hc->ep_is_in ? "IN" : "OUT"), _hc->hc_num);
+               DWC_DEBUGPL(DBG_HCDV, "  _hc->start_pkt_count %d\n", _hc->start_pkt_count);
+               DWC_DEBUGPL(DBG_HCDV, "  hctsiz.pktcnt %d\n", hctsiz.b.pktcnt);
+               DWC_DEBUGPL(DBG_HCDV, "  _hc->max_packet %d\n", _hc->max_packet);
+               DWC_DEBUGPL(DBG_HCDV, "  bytes_transferred %d\n", bytes_transferred);
+               DWC_DEBUGPL(DBG_HCDV, "  _urb->actual_length %d\n", _urb->actual_length);
+               DWC_DEBUGPL(DBG_HCDV, "  _urb->transfer_buffer_length %d\n",
+                           _urb->transfer_buffer_length);
+       }
+#endif 
+}
+
+/**
+ * Handles a host channel NAK interrupt. This handler may be called in either
+ * DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nak_intr(dwc_otg_hcd_t *_hcd,
+                                 dwc_hc_t *_hc,
+                                 dwc_otg_hc_regs_t *_hc_regs,
+                                 dwc_otg_qtd_t *_qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "NAK Received--\n", _hc->hc_num);
+
+       /*
+        * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and
+        * interrupt.  Re-start the SSPLIT transfer.
+        */
+       if (_hc->do_split) {
+               if (_hc->complete_split) {
+                       _qtd->error_count = 0;
+               }
+               _qtd->complete_split = 0;
+               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NAK, must_free);
+               goto handle_nak_done;
+       }
+
+       switch (usb_pipetype(_qtd->urb->pipe)) {
+       case PIPE_CONTROL:
+       case PIPE_BULK:
+               if (_hcd->core_if->dma_enable && _hc->ep_is_in) {
+                       /*
+                        * NAK interrupts are enabled on bulk/control IN
+                        * transfers in DMA mode for the sole purpose of
+                        * resetting the error count after a transaction error
+                        * occurs. The core will continue transferring data.
+                        */
+                       _qtd->error_count = 0;
+                       goto handle_nak_done;
+               }
+
+               /*
+                * NAK interrupts normally occur during OUT transfers in DMA
+                * or Slave mode. For IN transfers, more requests will be
+                * queued as request queue space is available.
+                */
+               _qtd->error_count = 0;
+
+               if (!_hc->qh->ping_state) {
+                       update_urb_state_xfer_intr(_hc, _hc_regs, _qtd->urb,
+                                                  _qtd, DWC_OTG_HC_XFER_NAK);
+                       save_data_toggle(_hc, _hc_regs, _qtd);
+                       if (_qtd->urb->dev->speed == USB_SPEED_HIGH) {
+                               _hc->qh->ping_state = 1;
+                       }
+               }
+
+               /*
+                * Halt the channel so the transfer can be re-started from
+                * the appropriate point or the PING protocol will
+                * start/continue. 
+                */
+           halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NAK, must_free);
+               break;
+       case PIPE_INTERRUPT:
+               _qtd->error_count = 0;
+               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NAK, must_free);
+               break;
+       case PIPE_ISOCHRONOUS:
+               /* Should never get called for isochronous transfers. */
+               BUG();
+               break;
+       }
+
+ handle_nak_done:
+       disable_hc_int(_hc_regs,nak);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel ACK interrupt. This interrupt is enabled when
+ * performing the PING protocol in Slave mode, when errors occur during
+ * either Slave mode or DMA mode, and during Start Split transactions.
+ */
+static int32_t handle_hc_ack_intr(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "ACK Received--\n", _hc->hc_num);
+
+       if (_hc->do_split) {
+               /*
+                * Handle ACK on SSPLIT.
+                * ACK should not occur in CSPLIT.
+                */
+               if ((!_hc->ep_is_in) && (_hc->data_pid_start != DWC_OTG_HC_PID_SETUP)) {
+                       _qtd->ssplit_out_xfer_count = _hc->xfer_len;
+               }
+               if (!(_hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !_hc->ep_is_in)) {
+                       /* Don't need complete for isochronous out transfers. */
+                       _qtd->complete_split = 1;
+               }
+
+               /* ISOC OUT */
+               if ((_hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && !_hc->ep_is_in) {
+                       switch (_hc->xact_pos) {
+                       case DWC_HCSPLIT_XACTPOS_ALL:
+                               break;
+                       case DWC_HCSPLIT_XACTPOS_END:
+                               _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+                               _qtd->isoc_split_offset = 0;
+                               break;
+                       case DWC_HCSPLIT_XACTPOS_BEGIN:
+                       case DWC_HCSPLIT_XACTPOS_MID: 
+                               /*
+                                * For BEGIN or MID, calculate the length for
+                                * the next microframe to determine the correct
+                                * SSPLIT token, either MID or END.
+                                */
+                               do {
+                                       struct usb_iso_packet_descriptor *frame_desc;
+
+                                       frame_desc = &_qtd->urb->iso_frame_desc[_qtd->isoc_frame_index];
+                                       _qtd->isoc_split_offset += 188;
+
+                                       if ((frame_desc->length - _qtd->isoc_split_offset) <= 188) {
+                                               _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_END;
+                                       }
+                                       else {
+                                               _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_MID;
+                                       }
+                                       
+                               } while(0);
+                               break;
+                       }
+               } else {
+                       halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_ACK, must_free);
+               }
+       } else {
+               _qtd->error_count = 0;
+
+               if (_hc->qh->ping_state) {
+                       _hc->qh->ping_state = 0;
+                       /*
+                        * Halt the channel so the transfer can be re-started
+                        * from the appropriate point. This only happens in
+                        * Slave mode. In DMA mode, the ping_state is cleared
+                        * when the transfer is started because the core
+                        * automatically executes the PING, then the transfer.
+                        */
+                   halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_ACK, must_free);
+               } else {
+                   halt_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free);
+               }
+       }
+
+       /*
+        * If the ACK occurred when _not_ in the PING state, let the channel
+        * continue transferring data after clearing the error count.
+        */
+
+       disable_hc_int(_hc_regs,ack);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel NYET interrupt. This interrupt should only occur on
+ * Bulk and Control OUT endpoints and for complete split transactions. If a
+ * NYET occurs at the same time as a Transfer Complete interrupt, it is
+ * handled in the xfercomp interrupt handler, not here. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nyet_intr(dwc_otg_hcd_t *_hcd,
+                                  dwc_hc_t *_hc,
+                                  dwc_otg_hc_regs_t *_hc_regs,
+                                  dwc_otg_qtd_t *_qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "NYET Received--\n", _hc->hc_num);
+
+       /*
+        * NYET on CSPLIT
+        * re-do the CSPLIT immediately on non-periodic
+        */
+       if ((_hc->do_split) && (_hc->complete_split)) {
+               if ((_hc->ep_type == DWC_OTG_EP_TYPE_INTR) || 
+                   (_hc->ep_type == DWC_OTG_EP_TYPE_ISOC)) {
+                       int frnum = dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(_hcd));
+
+                       if (dwc_full_frame_num(frnum) !=
+                           dwc_full_frame_num(_hc->qh->sched_frame)) {
+                               /*
+                                * No longer in the same full speed frame.
+                                * Treat this as a transaction error.
+                                */
+#if 0
+                               /** @todo Fix system performance so this can
+                                * be treated as an error. Right now complete
+                                * splits cannot be scheduled precisely enough
+                                * due to other system activity, so this error
+                                * occurs regularly in Slave mode.
+                                */
+                               _qtd->error_count++;
+#endif                         
+                               _qtd->complete_split = 0;
+                               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_XACT_ERR, must_free);
+                               /** @todo add support for isoc release */
+                               goto handle_nyet_done;
+                       }
+               }
+
+               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NYET, must_free);
+               goto handle_nyet_done;
+       }
+
+       _hc->qh->ping_state = 1;
+       _qtd->error_count = 0;
+
+       update_urb_state_xfer_intr(_hc, _hc_regs, _qtd->urb, _qtd,
+                                  DWC_OTG_HC_XFER_NYET);
+       save_data_toggle(_hc, _hc_regs, _qtd);
+
+       /*
+        * Halt the channel and re-start the transfer so the PING
+        * protocol will start.
+        */
+    halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_NYET, must_free);
+
+handle_nyet_done:
+       disable_hc_int(_hc_regs,nyet);
+       clear_hc_int(_hc_regs, nyet);
+       return 1;
+}
+
+/**
+ * Handles a host channel babble interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_babble_intr(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "Babble Error--\n", _hc->hc_num);
+       if (_hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+               dwc_otg_hcd_complete_urb(_hcd, _qtd->urb, -EOVERFLOW);
+               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_BABBLE_ERR, must_free);
+       } else {
+               dwc_otg_halt_status_e halt_status;
+               halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd,
+                                                   DWC_OTG_HC_XFER_BABBLE_ERR);
+               halt_channel(_hcd, _hc, _qtd, halt_status, must_free);
+       }
+       disable_hc_int(_hc_regs,bblerr);
+       return 1;
+}
+
+/**
+ * Handles a host channel AHB error interrupt. This handler is only called in
+ * DMA mode.
+ */
+static int32_t handle_hc_ahberr_intr(dwc_otg_hcd_t *_hcd,
+                                    dwc_hc_t *_hc,
+                                    dwc_otg_hc_regs_t *_hc_regs,
+                                    dwc_otg_qtd_t *_qtd)
+{
+       hcchar_data_t   hcchar;
+       hcsplt_data_t   hcsplt;
+       hctsiz_data_t   hctsiz;
+       uint32_t        hcdma;
+       struct urb      *urb = _qtd->urb;
+
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "AHB Error--\n", _hc->hc_num);
+
+       hcchar.d32 = dwc_read_reg32(&_hc_regs->hcchar);
+       hcsplt.d32 = dwc_read_reg32(&_hc_regs->hcsplt);
+       hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+       hcdma = dwc_read_reg32(&_hc_regs->hcdma);
+
+       DWC_ERROR("AHB ERROR, Channel %d\n", _hc->hc_num);
+       DWC_ERROR("  hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
+       DWC_ERROR("  hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
+               DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Enqueue\n");
+       DWC_ERROR("  Device address: %d\n", usb_pipedevice(urb->pipe));
+       DWC_ERROR("  Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe),
+                   (usb_pipein(urb->pipe) ? "IN" : "OUT"));
+       DWC_ERROR("  Endpoint type: %s\n",
+                   ({char *pipetype;
+                   switch (usb_pipetype(urb->pipe)) {
+                   case PIPE_CONTROL: pipetype = "CONTROL"; break;
+                   case PIPE_BULK: pipetype = "BULK"; break;
+                   case PIPE_INTERRUPT: pipetype = "INTERRUPT"; break;
+                   case PIPE_ISOCHRONOUS: pipetype = "ISOCHRONOUS"; break;
+                   default: pipetype = "UNKNOWN"; break;
+                   }; pipetype;}));
+       DWC_ERROR("  Speed: %s\n",
+                   ({char *speed;
+                   switch (urb->dev->speed) {
+                   case USB_SPEED_HIGH: speed = "HIGH"; break;
+                   case USB_SPEED_FULL: speed = "FULL"; break;
+                   case USB_SPEED_LOW: speed = "LOW"; break;
+                   default: speed = "UNKNOWN"; break;
+                   }; speed;}));
+       DWC_ERROR("  Max packet size: %d\n",
+                   usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+       DWC_ERROR("  Data buffer length: %d\n", urb->transfer_buffer_length);
+       DWC_ERROR("  Transfer buffer: %p, Transfer DMA: %p\n",
+                 urb->transfer_buffer, (void *)(u32)urb->transfer_dma);
+       DWC_ERROR("  Setup buffer: %p, Setup DMA: %p\n", 
+                 urb->setup_packet, (void *)(u32)urb->setup_dma);
+       DWC_ERROR("  Interval: %d\n", urb->interval);
+
+       dwc_otg_hcd_complete_urb(_hcd, urb, -EIO);
+
+       /*
+        * Force a channel halt. Don't call halt_channel because that won't
+        * write to the HCCHARn register in DMA mode to force the halt.
+        */
+       dwc_otg_hc_halt(_hcd->core_if, _hc, DWC_OTG_HC_XFER_AHB_ERR);
+
+       disable_hc_int(_hc_regs,ahberr);
+       return 1;
+}
+
+/**
+ * Handles a host channel transaction error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xacterr_intr(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "Transaction Error--\n", _hc->hc_num);
+
+       switch (usb_pipetype(_qtd->urb->pipe)) {
+       case PIPE_CONTROL:
+       case PIPE_BULK:
+               _qtd->error_count++;
+               if (!_hc->qh->ping_state) {
+                       update_urb_state_xfer_intr(_hc, _hc_regs, _qtd->urb,
+                                                  _qtd, DWC_OTG_HC_XFER_XACT_ERR);
+                       save_data_toggle(_hc, _hc_regs, _qtd);
+                       if (!_hc->ep_is_in && _qtd->urb->dev->speed == USB_SPEED_HIGH) {
+                               _hc->qh->ping_state = 1;
+                       }
+               }
+
+               /*
+                * Halt the channel so the transfer can be re-started from
+                * the appropriate point or the PING protocol will start.
+                */
+           halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_XACT_ERR, must_free);
+               break;
+       case PIPE_INTERRUPT:
+               _qtd->error_count++;
+               if ((_hc->do_split) && (_hc->complete_split)) {
+                       _qtd->complete_split = 0;
+               }
+               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_XACT_ERR, must_free);
+               break;
+       case PIPE_ISOCHRONOUS:
+               {
+                       dwc_otg_halt_status_e halt_status;
+                       halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd,
+                                                           DWC_OTG_HC_XFER_XACT_ERR);
+                                                           
+                       halt_channel(_hcd, _hc, _qtd, halt_status, must_free);
+               }
+               break;
+       }
+               
+
+       disable_hc_int(_hc_regs,xacterr);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel frame overrun interrupt. This handler may be called
+ * in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_frmovrun_intr(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "Frame Overrun--\n", _hc->hc_num);
+
+       switch (usb_pipetype(_qtd->urb->pipe)) {
+       case PIPE_CONTROL:
+       case PIPE_BULK:
+               break;
+       case PIPE_INTERRUPT:
+               halt_channel(_hcd, _hc, _qtd, DWC_OTG_HC_XFER_FRAME_OVERRUN, must_free);
+               break;
+       case PIPE_ISOCHRONOUS:
+               {
+                       dwc_otg_halt_status_e halt_status;
+                       halt_status = update_isoc_urb_state(_hcd, _hc, _hc_regs, _qtd,
+                                                           DWC_OTG_HC_XFER_FRAME_OVERRUN);
+                                                           
+                       halt_channel(_hcd, _hc, _qtd, halt_status, must_free);
+               }
+               break;
+       }
+
+       disable_hc_int(_hc_regs,frmovrun);
+
+       return 1;
+}
+
+/**
+ * Handles a host channel data toggle error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "Data Toggle Error--\n", _hc->hc_num);
+
+       if (_hc->ep_is_in) {
+               _qtd->error_count = 0;
+       } else {
+               DWC_ERROR("Data Toggle Error on OUT transfer,"
+                         "channel %d\n", _hc->hc_num);
+       }
+
+       disable_hc_int(_hc_regs,datatglerr);
+
+       return 1;
+}
+
+#ifdef DEBUG
+/**
+ * This function is for debug only. It checks that a valid halt status is set
+ * and that HCCHARn.chdis is clear. If there's a problem, corrective action is
+ * taken and a warning is issued.
+ * @return 1 if halt status is ok, 0 otherwise.
+ */
+static inline int halt_status_ok(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       hcchar_data_t hcchar;
+       hctsiz_data_t hctsiz;
+       hcint_data_t hcint;
+       hcintmsk_data_t hcintmsk;
+       hcsplt_data_t hcsplt;
+
+       if (_hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS) {
+               /*
+                * This code is here only as a check. This condition should
+                * never happen. Ignore the halt if it does occur.
+                */
+               hcchar.d32 = dwc_read_reg32(&_hc_regs->hcchar);
+               hctsiz.d32 = dwc_read_reg32(&_hc_regs->hctsiz);
+               hcint.d32 = dwc_read_reg32(&_hc_regs->hcint);
+               hcintmsk.d32 = dwc_read_reg32(&_hc_regs->hcintmsk);
+               hcsplt.d32 = dwc_read_reg32(&_hc_regs->hcsplt);
+               DWC_WARN("%s: _hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS, "
+                        "channel %d, hcchar 0x%08x, hctsiz 0x%08x, "
+                        "hcint 0x%08x, hcintmsk 0x%08x, "
+                        "hcsplt 0x%08x, qtd->complete_split %d\n",
+                        __func__, _hc->hc_num, hcchar.d32, hctsiz.d32,
+                        hcint.d32, hcintmsk.d32,
+                        hcsplt.d32, _qtd->complete_split);
+
+               DWC_WARN("%s: no halt status, channel %d, ignoring interrupt\n",
+                        __func__, _hc->hc_num);
+               DWC_WARN("\n");
+               clear_hc_int(_hc_regs,chhltd);
+               return 0;
+       }
+
+       /*
+        * This code is here only as a check. hcchar.chdis should
+        * never be set when the halt interrupt occurs. Halt the
+        * channel again if it does occur.
+        */
+       hcchar.d32 = dwc_read_reg32(&_hc_regs->hcchar);
+       if (hcchar.b.chdis) {
+               DWC_WARN("%s: hcchar.chdis set unexpectedly, "
+                        "hcchar 0x%08x, trying to halt again\n",
+                        __func__, hcchar.d32);
+               clear_hc_int(_hc_regs,chhltd);
+               _hc->halt_pending = 0;
+               halt_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free);
+               return 0;
+       }
+
+       return 1;
+}
+#endif
+
+/**
+ * Handles a host Channel Halted interrupt in DMA mode. This handler
+ * determines the reason the channel halted and proceeds accordingly.
+ */
+static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       hcint_data_t hcint;
+       hcintmsk_data_t hcintmsk;
+
+       if (_hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+           _hc->halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+               /*
+                * Just release the channel. A dequeue can happen on a
+                * transfer timeout. In the case of an AHB Error, the channel
+                * was forced to halt because there's no way to gracefully
+                * recover.
+                */
+           release_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free);
+               return;
+       }
+
+       /* Read the HCINTn register to determine the cause for the halt. */
+       hcint.d32 = dwc_read_reg32(&_hc_regs->hcint);
+       hcintmsk.d32 = dwc_read_reg32(&_hc_regs->hcintmsk);
+
+       if (hcint.b.xfercomp) {
+               /** @todo This is here because of a possible hardware bug.  Spec
+                * says that on SPLIT-ISOC OUT transfers in DMA mode that a HALT
+                * interrupt w/ACK bit set should occur, but I only see the
+                * XFERCOMP bit, even with it masked out.  This is a workaround
+                * for that behavior.  Should fix this when hardware is fixed.
+                */
+               if ((_hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && (!_hc->ep_is_in)) {
+                       handle_hc_ack_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+               }
+               handle_hc_xfercomp_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.stall) {
+               handle_hc_stall_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.xacterr) {
+               /*
+                * Must handle xacterr before nak or ack. Could get a xacterr
+                * at the same time as either of these on a BULK/CONTROL OUT
+                * that started with a PING. The xacterr takes precedence.
+                */
+           handle_hc_xacterr_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.nyet) {
+               /*
+                * Must handle nyet before nak or ack. Could get a nyet at the
+                * same time as either of those on a BULK/CONTROL OUT that
+                * started with a PING. The nyet takes precedence.
+                */
+           handle_hc_nyet_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.bblerr) {
+               handle_hc_babble_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.frmovrun) {
+               handle_hc_frmovrun_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.datatglerr) {
+               handle_hc_datatglerr_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+               _hc->qh->data_toggle = 0;
+               halt_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free);
+       } else if (hcint.b.nak && !hcintmsk.b.nak) {
+               /*
+                * If nak is not masked, it's because a non-split IN transfer
+                * is in an error state. In that case, the nak is handled by
+                * the nak interrupt handler, not here. Handle nak here for
+                * BULK/CONTROL OUT transfers, which halt on a NAK to allow
+                * rewinding the buffer pointer.
+                */
+           handle_hc_nak_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else if (hcint.b.ack && !hcintmsk.b.ack) {
+               /*
+                * If ack is not masked, it's because a non-split IN transfer
+                * is in an error state. In that case, the ack is handled by
+                * the ack interrupt handler, not here. Handle ack here for
+                * split transfers. Start splits halt on ACK.
+                */
+           handle_hc_ack_intr(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else {
+               if (_hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+                   _hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+                       /*
+                        * A periodic transfer halted with no other channel
+                        * interrupts set. Assume it was halted by the core
+                        * because it could not be completed in its scheduled
+                        * (micro)frame.
+                        */
+#ifdef DEBUG
+                       DWC_PRINT("%s: Halt channel %d (assume incomplete periodic transfer)\n",
+                                 __func__, _hc->hc_num);
+#endif /*  */
+                   halt_channel(_hcd, _hc, _qtd,
+                                        DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE, must_free);
+               } else {
+#ifdef DEBUG
+                       DWC_ERROR("%s: Channel %d, DMA Mode -- ChHltd set, but reason "
+                            "for halting is unknown, nyet %d, hcint 0x%08x, intsts 0x%08x\n",
+                            __func__, _hc->hc_num, hcint.b.nyet, hcint.d32,
+                                dwc_read_reg32(&_hcd->core_if->core_global_regs->gintsts));
+#endif                 
+                       halt_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free);
+               }
+       }
+}
+
+/**
+ * Handles a host channel Channel Halted interrupt.
+ *
+ * In slave mode, this handler is called only when the driver specifically
+ * requests a halt. This occurs during handling other host channel interrupts
+ * (e.g. nak, xacterr, stall, nyet, etc.).
+ *
+ * In DMA mode, this is the interrupt that occurs when the core has finished
+ * processing a transfer on a channel. Other host channel interrupts (except
+ * ahberr) are disabled in DMA mode.
+ */
+static int32_t handle_hc_chhltd_intr(dwc_otg_hcd_t *_hcd,
+       dwc_hc_t * _hc, dwc_otg_hc_regs_t * _hc_regs, dwc_otg_qtd_t * _qtd, int *must_free)
+{
+       DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+                   "Channel Halted--\n", _hc->hc_num);
+
+       if (_hcd->core_if->dma_enable) {
+               handle_hc_chhltd_intr_dma(_hcd, _hc, _hc_regs, _qtd, must_free);
+       } else {
+#ifdef DEBUG
+               if (!halt_status_ok(_hcd, _hc, _hc_regs, _qtd, must_free)) {
+                       return 1;
+               }
+#endif /*  */
+           release_channel(_hcd, _hc, _qtd, _hc->halt_status, must_free);
+       }
+
+       return 1;
+}
+
+/** Handles interrupt for a specific Host Channel */
+int32_t dwc_otg_hcd_handle_hc_n_intr (dwc_otg_hcd_t *_dwc_otg_hcd, uint32_t _num)
+{
+       int must_free = 0;
+       int retval = 0;
+       hcint_data_t hcint;
+       hcintmsk_data_t hcintmsk;
+       dwc_hc_t *hc;
+       dwc_otg_hc_regs_t *hc_regs;
+       dwc_otg_qtd_t *qtd;
+       
+       DWC_DEBUGPL(DBG_HCDV, "--Host Channel Interrupt--, Channel %d\n", _num);
+
+       hc = _dwc_otg_hcd->hc_ptr_array[_num];
+       hc_regs = _dwc_otg_hcd->core_if->host_if->hc_regs[_num];
+       qtd = list_entry(hc->qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry);
+
+       hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+       hcintmsk.d32 = dwc_read_reg32(&hc_regs->hcintmsk);
+       DWC_DEBUGPL(DBG_HCDV, "  hcint 0x%08x, hcintmsk 0x%08x, hcint&hcintmsk 0x%08x\n",
+                   hcint.d32, hcintmsk.d32, (hcint.d32 & hcintmsk.d32));
+       hcint.d32 = hcint.d32 & hcintmsk.d32;
+
+       if (!_dwc_otg_hcd->core_if->dma_enable) {
+               if ((hcint.b.chhltd) && (hcint.d32 != 0x2)) {
+                       hcint.b.chhltd = 0;
+               }
+       }
+
+       if (hcint.b.xfercomp) {
+               retval |= handle_hc_xfercomp_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+               /*
+                * If NYET occurred at same time as Xfer Complete, the NYET is
+                * handled by the Xfer Complete interrupt handler. Don't want
+                * to call the NYET interrupt handler in this case.
+                */
+               hcint.b.nyet = 0;
+       }
+       if (hcint.b.chhltd) {
+               retval |= handle_hc_chhltd_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.ahberr) {
+               retval |= handle_hc_ahberr_intr(_dwc_otg_hcd, hc, hc_regs, qtd);
+       }
+       if (hcint.b.stall) {
+               retval |= handle_hc_stall_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.nak) {
+               retval |= handle_hc_nak_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.ack) {
+               retval |= handle_hc_ack_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.nyet) {
+               retval |= handle_hc_nyet_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.xacterr) {
+               retval |= handle_hc_xacterr_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.bblerr) {
+               retval |= handle_hc_babble_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.frmovrun) {
+               retval |= handle_hc_frmovrun_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+       if (hcint.b.datatglerr) {
+               retval |= handle_hc_datatglerr_intr(_dwc_otg_hcd, hc, hc_regs, qtd, &must_free);
+       }
+
+       /*
+        * Logic to free the qtd here, at the end of the hc intr
+        * processing, if the handling of this interrupt determined
+        * that it needs to be freed.
+        */
+       if (must_free) {
+               /* Free the qtd here now that we are done using it. */
+               dwc_otg_hcd_qtd_free(qtd);
+       }
+       return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/dwc_otg/dwc_otg_hcd_queue.c b/drivers/usb/dwc_otg/dwc_otg_hcd_queue.c
new file mode 100644
index 0000000..fcb5ce6
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_hcd_queue.c
@@ -0,0 +1,794 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_queue.c $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 537387 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the functions to manage Queue Heads and Queue
+ * Transfer Descriptors.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+/**
+ * This function allocates and initializes a QH.
+ *
+ * @param _hcd The HCD state structure for the DWC OTG controller.
+ * @param[in] _urb Holds the information about the device/endpoint that we need
+ * to initialize the QH.
+ *
+ * @return Returns pointer to the newly allocated QH, or NULL on error. */
+dwc_otg_qh_t *dwc_otg_hcd_qh_create (dwc_otg_hcd_t *_hcd, struct urb *_urb)
+{
+       dwc_otg_qh_t *qh;
+
+       /* Allocate memory */
+       /** @todo add memflags argument */
+       qh = dwc_otg_hcd_qh_alloc ();
+       if (qh == NULL) {
+               return NULL;
+       }
+
+       dwc_otg_hcd_qh_init (_hcd, qh, _urb);
+       return qh;
+}
+
+/** Free each QTD in the QH's QTD-list then free the QH.  QH should already be
+ * removed from a list.  QTD list should already be empty if called from URB
+ * Dequeue.
+ *
+ * @param[in] _qh The QH to free.
+ */
+void dwc_otg_hcd_qh_free (dwc_otg_qh_t *_qh)
+{
+       dwc_otg_qtd_t *qtd;
+       struct list_head *pos;
+       unsigned long flags;
+
+       /* Free each QTD in the QTD list */
+       local_irq_save (flags);
+       for (pos = _qh->qtd_list.next;
+            pos != &_qh->qtd_list;
+            pos = _qh->qtd_list.next)
+       {
+               list_del (pos);
+               qtd = dwc_list_to_qtd (pos);
+               dwc_otg_hcd_qtd_free (qtd);
+       }
+       local_irq_restore (flags);
+
+       kfree (_qh);
+       return;
+}
+
+/** Initializes a QH structure.
+ *
+ * @param[in] _hcd The HCD state structure for the DWC OTG controller.
+ * @param[in] _qh The QH to init.
+ * @param[in] _urb Holds the information about the device/endpoint that we need
+ * to initialize the QH. */
+#define SCHEDULE_SLOP 10
+void dwc_otg_hcd_qh_init(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, struct urb *_urb)
+{
+       memset (_qh, 0, sizeof (dwc_otg_qh_t));
+
+       /* Initialize QH */
+       switch (usb_pipetype(_urb->pipe)) {
+       case PIPE_CONTROL:
+               _qh->ep_type = USB_ENDPOINT_XFER_CONTROL;
+               break;
+       case PIPE_BULK:
+               _qh->ep_type = USB_ENDPOINT_XFER_BULK;
+               break;
+       case PIPE_ISOCHRONOUS:
+               _qh->ep_type = USB_ENDPOINT_XFER_ISOC;
+               break;
+       case PIPE_INTERRUPT: 
+               _qh->ep_type = USB_ENDPOINT_XFER_INT;
+               break;
+       }
+
+       _qh->ep_is_in = usb_pipein(_urb->pipe) ? 1 : 0;
+
+       _qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+       _qh->maxp = usb_maxpacket(_urb->dev, _urb->pipe, !(usb_pipein(_urb->pipe)));
+       INIT_LIST_HEAD(&_qh->qtd_list);
+       INIT_LIST_HEAD(&_qh->qh_list_entry);
+       _qh->channel = NULL;
+
+       /* FS/LS Enpoint on HS Hub 
+        * NOT virtual root hub */
+       _qh->do_split = 0;
+       _qh->speed = _urb->dev->speed;
+       if (((_urb->dev->speed == USB_SPEED_LOW) || 
+            (_urb->dev->speed == USB_SPEED_FULL)) &&
+               (_urb->dev->tt) && (_urb->dev->tt->hub) && (_urb->dev->tt->hub->devnum != 1)) {
+               DWC_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n", 
+                          usb_pipeendpoint(_urb->pipe), _urb->dev->tt->hub->devnum, 
+                          _urb->dev->ttport);
+               _qh->do_split = 1;
+       }
+
+       if (_qh->ep_type == USB_ENDPOINT_XFER_INT ||
+           _qh->ep_type == USB_ENDPOINT_XFER_ISOC) {
+               /* Compute scheduling parameters once and save them. */
+               hprt0_data_t hprt;
+
+               /** @todo Account for split transfers in the bus time. */
+               int bytecount = dwc_hb_mult(_qh->maxp) * dwc_max_packet(_qh->maxp);
+               _qh->usecs = NS_TO_US(usb_calc_bus_time(_urb->dev->speed,
+                                              usb_pipein(_urb->pipe),
+                                       (_qh->ep_type == USB_ENDPOINT_XFER_ISOC),bytecount));
+
+               /* Start in a slightly future (micro)frame. */
+               _qh->sched_frame = dwc_frame_num_inc(_hcd->frame_number, SCHEDULE_SLOP);
+               _qh->interval = _urb->interval;
+#if 0
+               /* Increase interrupt polling rate for debugging. */
+               if (_qh->ep_type == USB_ENDPOINT_XFER_INT) {
+                       _qh->interval = 8;
+               }
+#endif         
+               hprt.d32 = dwc_read_reg32(_hcd->core_if->host_if->hprt0);
+               if ((hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) && 
+                   ((_urb->dev->speed == USB_SPEED_LOW) || 
+                    (_urb->dev->speed == USB_SPEED_FULL)))
+               {
+                       _qh->interval *= 8;
+                       _qh->sched_frame |= 0x7;
+                       _qh->start_split_frame = _qh->sched_frame;
+               }
+       }
+
+       DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD QH Initialized\n");
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - qh = %p\n", _qh);
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Device Address = %d\n",
+                   _urb->dev->devnum);
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Endpoint %d, %s\n",
+                   usb_pipeendpoint(_urb->pipe),
+                   usb_pipein(_urb->pipe) == USB_DIR_IN ? "IN" : "OUT");
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Speed = %s\n", 
+                   ({ char *speed; switch (_urb->dev->speed) {
+                   case USB_SPEED_LOW: speed = "low";  break;
+                   case USB_SPEED_FULL: speed = "full";        break;
+                   case USB_SPEED_HIGH: speed = "high";        break;
+                   default: speed = "?";       break;
+                   }; speed;}));
+       DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Type = %s\n",
+                   ({ char *type; switch (_qh->ep_type) {
+                   case USB_ENDPOINT_XFER_ISOC: type = "isochronous";  break;
+                   case USB_ENDPOINT_XFER_INT: type = "interrupt";     break;
+                   case USB_ENDPOINT_XFER_CONTROL: type = "control";   break;
+                   case USB_ENDPOINT_XFER_BULK: type = "bulk"; break;
+                   default: type = "?";        break;
+                   }; type;}));
+#ifdef DEBUG
+       if (_qh->ep_type == USB_ENDPOINT_XFER_INT) {
+               DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - usecs = %d\n",
+                           _qh->usecs);
+               DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - interval = %d\n",
+                           _qh->interval);
+       }
+#endif 
+       
+       return;
+}
+
+/**
+ * Microframe scheduler
+ * track the total use in hcd->frame_usecs
+ * keep each qh use in qh->frame_usecs
+ * when surrendering the qh then donate the time back
+ */
+const unsigned short max_uframe_usecs[]={ 100, 100, 100, 100, 100, 100, 30, 0 };
+
+/*
+ * called from dwc_otg_hcd.c:dwc_otg_hcd_init
+ */
+int init_hcd_usecs(dwc_otg_hcd_t *_hcd)
+{
+       int i;
+       for (i=0; i<8; i++) {
+               _hcd->frame_usecs[i] = max_uframe_usecs[i];
+       }
+       return 0;
+}
+
+static int find_single_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       int i;
+       unsigned short utime;
+       int t_left;
+       int ret;
+       int done;
+
+       ret = -1;
+       utime = _qh->usecs;
+       t_left = utime;
+       i = 0;
+       done = 0;
+       while (done == 0) {
+               /* At the start _hcd->frame_usecs[i] = max_uframe_usecs[i]; */
+               if (utime <= _hcd->frame_usecs[i]) {
+                       _hcd->frame_usecs[i] -= utime;
+                       _qh->frame_usecs[i] += utime;
+                       t_left -= utime;
+                       ret = i;
+                       done = 1;
+                       return ret;
+               } else {
+                       i++;
+                       if (i == 8) {
+                               done = 1;
+                               ret = -1;
+                       }
+               }
+       }
+       return ret;
+}
+
+/*
+ * use this for FS apps that can span multiple uframes
+ */
+static int find_multi_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       int i;
+       int j;
+       unsigned short utime;
+       int t_left;
+       int ret;
+       int done;
+       unsigned short xtime;
+
+       ret = -1;
+       utime = _qh->usecs;
+       t_left = utime;
+       i = 0;
+       done = 0;
+loop:
+       while (done == 0) {
+               if(_hcd->frame_usecs[i] <= 0) {
+                       i++;
+                       if (i == 8) {
+                               done = 1;
+                               ret = -1;
+                       }
+                       goto loop;
+               }
+
+               /*
+                * we need n consequtive slots
+                * so use j as a start slot j plus j+1 must be enough time (for now)
+                */
+               xtime= _hcd->frame_usecs[i];
+               for (j = i+1 ; j < 8 ; j++ ) {
+                       /*
+                        * if we add this frame remaining time to xtime we may
+                        * be OK, if not we need to test j for a complete frame
+                        */
+                       if ((xtime+_hcd->frame_usecs[j]) < utime) {
+                               if (_hcd->frame_usecs[j] < max_uframe_usecs[j]) {
+                                       j = 8;
+                                       ret = -1;
+                                       continue;
+                               }
+                       }
+                       if (xtime >= utime) {
+                               ret = i;
+                               j = 8;  /* stop loop with a good value ret */
+                               continue;
+                       }
+                       /* add the frame time to x time */
+                       xtime += _hcd->frame_usecs[j];
+                       /* we must have a fully available next frame or break */
+                       if ((xtime < utime)
+                           && (_hcd->frame_usecs[j] == max_uframe_usecs[j])) {
+                               ret = -1;
+                               j = 8;  /* stop loop with a bad value ret */
+                               continue;
+                       }
+               }
+               if (ret >= 0) {
+                       t_left = utime;
+                       for (j = i; (t_left>0) && (j < 8); j++ ) {
+                               t_left -= _hcd->frame_usecs[j];
+                               if ( t_left <= 0 ) {
+                                       _qh->frame_usecs[j] += _hcd->frame_usecs[j] + t_left;
+                                       _hcd->frame_usecs[j]= -t_left;
+                                       ret = i;
+                                       done = 1;
+                               } else {
+                                       _qh->frame_usecs[j] += _hcd->frame_usecs[j];
+                                       _hcd->frame_usecs[j] = 0;
+                               }
+                       }
+               } else {
+                       i++;
+                       if (i == 8) {
+                               done = 1;
+                               ret = -1;
+                       }
+               }
+       }
+       return ret;
+}
+
+static int find_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       int ret;
+       ret = -1;
+
+       if (_qh->speed == USB_SPEED_HIGH) {
+               /* if this is a hs transaction we need a full frame */
+               ret = find_single_uframe(_hcd, _qh);
+       } else {
+               /* if this is a fs transaction we may need a sequence of frames */
+               ret = find_multi_uframe(_hcd, _qh);
+       }
+       return ret;
+}
+                       
+/**
+ * Checks that the max transfer size allowed in a host channel is large enough
+ * to handle the maximum data transfer in a single (micro)frame for a periodic
+ * transfer.
+ *
+ * @param _hcd The HCD state structure for the DWC OTG controller.
+ * @param _qh QH for a periodic endpoint.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_max_xfer_size(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh)
+{
+       int             status;
+       uint32_t        max_xfer_size;
+       uint32_t        max_channel_xfer_size;
+
+       status = 0;
+
+       max_xfer_size = dwc_max_packet(_qh->maxp) * dwc_hb_mult(_qh->maxp);
+       max_channel_xfer_size = _hcd->core_if->core_params->max_transfer_size;
+
+       if (max_xfer_size > max_channel_xfer_size) {
+               DWC_NOTICE("%s: Periodic xfer length %d > "
+                           "max xfer length for channel %d\n",
+                           __func__, max_xfer_size, max_channel_xfer_size);
+               status = -ENOSPC;
+       }
+
+       return status;
+}
+
+/**
+ * Schedules an interrupt or isochronous transfer in the periodic schedule.
+ *
+ * @param _hcd The HCD state structure for the DWC OTG controller.
+ * @param _qh QH for the periodic transfer. The QH should already contain the
+ * scheduling information.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int schedule_periodic(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh)
+{
+       int status = 0;
+
+       int frame;
+       status = find_uframe(_hcd, _qh);
+       frame = -1;
+       if (status == 0) {
+               frame = 7;
+       } else {
+               if (status > 0 )
+                       frame = status-1;
+       }
+
+       /* Set the new frame up */
+       if (frame > -1) {
+               _qh->sched_frame &= ~0x7;
+               _qh->sched_frame |= (frame & 7);
+       }
+
+       if (status != -1 )
+               status = 0;
+       if (status) {
+               DWC_NOTICE("%s: Insufficient periodic bandwidth for "
+                          "periodic transfer.\n", __func__);
+               return status;
+       }
+
+       status = check_max_xfer_size(_hcd, _qh);
+       if (status) {
+               DWC_NOTICE("%s: Channel max transfer size too small "
+                           "for periodic transfer.\n", __func__);
+               return status;
+       }
+
+       /* Always start in the inactive schedule. */
+       list_add_tail(&_qh->qh_list_entry, &_hcd->periodic_sched_inactive);
+
+
+       /* Update claimed usecs per (micro)frame. */
+       _hcd->periodic_usecs += _qh->usecs;
+
+       /* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */
+       hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_allocated += _qh->usecs / _qh->interval;
+       if (_qh->ep_type == USB_ENDPOINT_XFER_INT) {
+               hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_int_reqs++;
+               DWC_DEBUGPL(DBG_HCD, "Scheduled intr: qh %p, usecs %d, period %d\n",
+                           _qh, _qh->usecs, _qh->interval);
+       } else {
+               hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_isoc_reqs++;
+               DWC_DEBUGPL(DBG_HCD, "Scheduled isoc: qh %p, usecs %d, period %d\n",
+                           _qh, _qh->usecs, _qh->interval);
+       }
+               
+       return status;
+}
+
+/**
+ * This function adds a QH to either the non periodic or periodic schedule if
+ * it is not already in the schedule. If the QH is already in the schedule, no
+ * action is taken.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_add (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh)
+{
+       unsigned long flags;
+       int status = 0;
+
+       local_irq_save(flags);
+
+       if (!list_empty(&_qh->qh_list_entry)) {
+               /* QH already in a schedule. */
+               goto done;
+       }
+
+       /* Add the new QH to the appropriate schedule */
+       if (dwc_qh_is_non_per(_qh)) {
+               /* Always start in the inactive schedule. */
+               list_add_tail(&_qh->qh_list_entry, &_hcd->non_periodic_sched_inactive);
+       } else {
+               status = schedule_periodic(_hcd, _qh);
+       }
+
+ done:
+       local_irq_restore(flags);
+
+       return status;
+}
+
+/**
+ * This function adds a QH to the non periodic deferred schedule.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_add_deferred(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+       unsigned long flags;
+       local_irq_save(flags);
+       if (!list_empty(&_qh->qh_list_entry)) {
+               /* QH already in a schedule. */
+               goto done;
+       }
+
+       /* Add the new QH to the non periodic deferred schedule */
+       if (dwc_qh_is_non_per(_qh)) {
+               list_add_tail(&_qh->qh_list_entry,
+                             &_hcd->non_periodic_sched_deferred);
+       }
+done:
+       local_irq_restore(flags);
+       return 0;
+}
+
+/**
+ * Removes an interrupt or isochronous transfer from the periodic schedule.
+ *
+ * @param _hcd The HCD state structure for the DWC OTG controller.
+ * @param _qh QH for the periodic transfer.
+ */
+static void deschedule_periodic(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh)
+{
+       int i;
+       list_del_init(&_qh->qh_list_entry);
+
+
+       /* Update claimed usecs per (micro)frame. */
+       _hcd->periodic_usecs -= _qh->usecs;
+
+       for (i = 0; i < 8; i++) {
+               _hcd->frame_usecs[i] += _qh->frame_usecs[i];
+               _qh->frame_usecs[i] = 0;
+       }
+       /* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */
+       hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_allocated -= _qh->usecs / _qh->interval;
+
+       if (_qh->ep_type == USB_ENDPOINT_XFER_INT) {
+               hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_int_reqs--;
+               DWC_DEBUGPL(DBG_HCD, "Descheduled intr: qh %p, usecs %d, period %d\n",
+                           _qh, _qh->usecs, _qh->interval);
+       } else {
+               hcd_to_bus(dwc_otg_hcd_to_hcd(_hcd))->bandwidth_isoc_reqs--;
+               DWC_DEBUGPL(DBG_HCD, "Descheduled isoc: qh %p, usecs %d, period %d\n",
+                           _qh, _qh->usecs, _qh->interval);
+       }
+}
+
+/** 
+ * Removes a QH from either the non-periodic or periodic schedule.  Memory is
+ * not freed.
+ *
+ * @param[in] _hcd The HCD state structure.
+ * @param[in] _qh QH to remove from schedule. */
+void dwc_otg_hcd_qh_remove (dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh)
+{
+       unsigned long flags;
+
+       local_irq_save(flags);
+
+       if (list_empty(&_qh->qh_list_entry)) {
+               /* QH is not in a schedule. */
+               goto done;
+       }
+
+       if (dwc_qh_is_non_per(_qh)) {
+               if (_hcd->non_periodic_qh_ptr == &_qh->qh_list_entry) {
+                       _hcd->non_periodic_qh_ptr = _hcd->non_periodic_qh_ptr->next;
+               }
+               list_del_init(&_qh->qh_list_entry);
+       } else {
+               deschedule_periodic(_hcd, _qh);
+       }
+
+ done:
+       local_irq_restore(flags);
+}
+
+/**
+ * Defers a QH. For non-periodic QHs, removes the QH from the active
+ * non-periodic schedule. The QH is added to the deferred non-periodic
+ * schedule if any QTDs are still attached to the QH.
+ */
+int dwc_otg_hcd_qh_deferr(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh, int delay)
+{
+        int deact = 1;
+       unsigned long flags;
+       local_irq_save(flags);
+       if (dwc_qh_is_non_per(_qh)) {
+               _qh->sched_frame =
+                 dwc_frame_num_inc(_hcd->frame_number,
+                                   delay);
+               _qh->channel = NULL;
+               _qh->qtd_in_process = NULL;
+               deact = 0;
+               dwc_otg_hcd_qh_remove(_hcd, _qh);
+               if (!list_empty(&_qh->qtd_list)) {
+                       /* Add back to deferred non-periodic schedule. */
+                       dwc_otg_hcd_qh_add_deferred(_hcd, _qh);
+               }
+       }
+       local_irq_restore(flags);
+       return deact;
+}
+
+/**
+ * Deactivates a QH. For non-periodic QHs, removes the QH from the active
+ * non-periodic schedule. The QH is added to the inactive non-periodic
+ * schedule if any QTDs are still attached to the QH.
+ *
+ * For periodic QHs, the QH is removed from the periodic queued schedule. If
+ * there are any QTDs still attached to the QH, the QH is added to either the
+ * periodic inactive schedule or the periodic ready schedule and its next
+ * scheduled frame is calculated. The QH is placed in the ready schedule if
+ * the scheduled frame has been reached already. Otherwise it's placed in the
+ * inactive schedule. If there are no QTDs attached to the QH, the QH is
+ * completely removed from the periodic schedule.
+ */
+void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t *_hcd, dwc_otg_qh_t *_qh, int sched_next_periodic_split)
+{
+       unsigned long flags;
+       local_irq_save(flags);
+
+       if (dwc_qh_is_non_per(_qh)) {
+               dwc_otg_hcd_qh_remove(_hcd, _qh);
+               if (!list_empty(&_qh->qtd_list)) {
+                       /* Add back to inactive non-periodic schedule. */
+                       dwc_otg_hcd_qh_add(_hcd, _qh);
+               }
+       } else {
+               uint16_t frame_number = dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(_hcd));
+
+               if (_qh->do_split) {
+                       /* Schedule the next continuing periodic split transfer */
+                       if (sched_next_periodic_split) {
+
+                               _qh->sched_frame = frame_number;
+                               if (dwc_frame_num_le(frame_number,
+                                                    dwc_frame_num_inc(_qh->start_split_frame, 1))) {
+                                       /*
+                                        * Allow one frame to elapse after start
+                                        * split microframe before scheduling
+                                        * complete split, but DONT if we are
+                                        * doing the next start split in the
+                                        * same frame for an ISOC out.
+                                        */
+                                       if ((_qh->ep_type != USB_ENDPOINT_XFER_ISOC) || (_qh->ep_is_in != 0)) {
+                                               _qh->sched_frame = dwc_frame_num_inc(_qh->sched_frame, 1);
+                                       }
+                               }
+                       } else {
+                               _qh->sched_frame = dwc_frame_num_inc(_qh->start_split_frame,
+                                                                    _qh->interval);
+                               if (dwc_frame_num_le(_qh->sched_frame, frame_number)) {
+                                       _qh->sched_frame = frame_number;
+                               }
+                               _qh->sched_frame |= 0x7;
+                               _qh->start_split_frame = _qh->sched_frame;
+                       }
+               } else {
+                       _qh->sched_frame = dwc_frame_num_inc(_qh->sched_frame, _qh->interval);
+                       if (dwc_frame_num_le(_qh->sched_frame, frame_number)) {
+                               _qh->sched_frame = frame_number;
+                       }
+               }
+
+               if (list_empty(&_qh->qtd_list)) {
+                       dwc_otg_hcd_qh_remove(_hcd, _qh);
+               } else {
+                       /*
+                        * Remove from periodic_sched_queued and move to
+                        * appropriate queue.
+                        */
+                       if (dwc_frame_num_le(_qh->sched_frame, frame_number)) {
+                               list_move(&_qh->qh_list_entry,
+                                         &_hcd->periodic_sched_ready);
+                       } else {
+                               list_move(&_qh->qh_list_entry,
+                                         &_hcd->periodic_sched_inactive);
+                       }
+               }
+       }
+
+       local_irq_restore(flags);
+}
+
+/** 
+ * This function allocates and initializes a QTD. 
+ *
+ * @param[in] _urb The URB to create a QTD from.  Each URB-QTD pair will end up
+ * pointing to each other so each pair should have a unique correlation.
+ *
+ * @return Returns pointer to the newly allocated QTD, or NULL on error. */
+dwc_otg_qtd_t *dwc_otg_hcd_qtd_create (struct urb *_urb)
+{
+       dwc_otg_qtd_t *qtd;
+
+       qtd = dwc_otg_hcd_qtd_alloc ();
+       if (qtd == NULL) {
+               return NULL;
+       }
+
+       dwc_otg_hcd_qtd_init (qtd, _urb);
+       return qtd;
+}
+
+/** 
+ * Initializes a QTD structure.
+ *
+ * @param[in] _qtd The QTD to initialize.
+ * @param[in] _urb The URB to use for initialization.  */
+void dwc_otg_hcd_qtd_init (dwc_otg_qtd_t *_qtd, struct urb *_urb)
+{
+       memset (_qtd, 0, sizeof (dwc_otg_qtd_t));
+       _qtd->urb = _urb;
+       if (usb_pipecontrol(_urb->pipe)) {
+               /*
+                * The only time the QTD data toggle is used is on the data
+                * phase of control transfers. This phase always starts with
+                * DATA1.
+                */
+               _qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+               _qtd->control_phase = DWC_OTG_CONTROL_SETUP;
+       }
+
+       /* start split */
+       _qtd->complete_split = 0;
+       _qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+       _qtd->isoc_split_offset = 0;
+
+       /* Store the qtd ptr in the urb to reference what QTD. */
+       _urb->hcpriv = _qtd;
+       return;
+}
+
+/**
+ * This function adds a QTD to the QTD-list of a QH.  It will find the correct
+ * QH to place the QTD into.  If it does not find a QH, then it will create a
+ * new QH. If the QH to which the QTD is added is not currently scheduled, it
+ * is placed into the proper schedule based on its EP type.
+ *
+ * @param[in] _qtd The QTD to add
+ * @param[in] _dwc_otg_hcd The DWC HCD structure
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * _qtd,  dwc_otg_hcd_t * _dwc_otg_hcd)
+{
+       struct usb_host_endpoint *ep;
+       dwc_otg_qh_t *qh;
+       unsigned long flags;
+       int retval = 0;
+       struct urb *urb = _qtd->urb;
+
+       local_irq_save(flags);
+
+       /*
+        * Get the QH which holds the QTD-list to insert to. Create QH if it
+        * doesn't exist.
+        */
+       ep = dwc_urb_to_endpoint(urb);
+       qh = (dwc_otg_qh_t *)ep->hcpriv;
+       if (qh == NULL) {
+               qh = dwc_otg_hcd_qh_create (_dwc_otg_hcd, urb);
+               if (qh == NULL) {
+                       retval = -1;
+                       goto done;
+               }
+               ep->hcpriv = qh;
+       }
+
+       _qtd->qtd_qh_ptr = qh;
+       retval = dwc_otg_hcd_qh_add(_dwc_otg_hcd, qh);
+       if (retval == 0) {
+               list_add_tail(&_qtd->qtd_list_entry, &qh->qtd_list);
+       }
+
+ done:
+       local_irq_restore(flags);
+       return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff --git a/drivers/usb/dwc_otg/dwc_otg_ifx.c b/drivers/usb/dwc_otg/dwc_otg_ifx.c
new file mode 100644
index 0000000..0a4c209
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_ifx.c
@@ -0,0 +1,100 @@
+/******************************************************************************
+**
+** FILE NAME    : dwc_otg_ifx.c
+** PROJECT      : Twinpass/Danube
+** MODULES      : DWC OTG USB
+**
+** DATE         : 12 Auguest 2007
+** AUTHOR       : Sung Winder
+** DESCRIPTION  : Platform specific initialization.
+** COPYRIGHT    :       Copyright (c) 2007
+**                      Infineon Technologies AG
+**                      2F, No.2, Li-Hsin Rd., Hsinchu Science Park,
+**                      Hsin-chu City, 300 Taiwan.
+**
+**    This program is free software; you can redistribute it and/or modify
+**    it under the terms of the GNU General Public License as published by
+**    the Free Software Foundation; either version 2 of the License, or
+**    (at your option) any later version.
+**
+** HISTORY
+** $Date             $Author         $Comment
+** 12 Auguest 2007   Sung Winder     Initiate Version
+*******************************************************************************/
+#include "dwc_otg_ifx.h"
+
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/gpio.h>
+
+#include <asm/io.h>
+//#include <asm/mach-ifxmips/ifxmips.h>
+#include <lantiq_soc.h>
+
+#define IFXMIPS_GPIO_BASE_ADDR  (0xBE100B00)
+
+#define IFXMIPS_GPIO_P0_OUT     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0010))
+#define IFXMIPS_GPIO_P1_OUT     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0040))
+#define IFXMIPS_GPIO_P0_IN      ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0014))
+#define IFXMIPS_GPIO_P1_IN      ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0044))
+#define IFXMIPS_GPIO_P0_DIR     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0018))
+#define IFXMIPS_GPIO_P1_DIR     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0048))
+#define IFXMIPS_GPIO_P0_ALTSEL0     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x001C))
+#define IFXMIPS_GPIO_P1_ALTSEL0     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x004C))
+#define IFXMIPS_GPIO_P0_ALTSEL1     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0020))
+#define IFXMIPS_GPIO_P1_ALTSEL1     ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0050))
+#define IFXMIPS_GPIO_P0_OD      ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0024))
+#define IFXMIPS_GPIO_P1_OD      ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0054))
+#define IFXMIPS_GPIO_P0_STOFF       ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0028))
+#define IFXMIPS_GPIO_P1_STOFF       ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0058))
+#define IFXMIPS_GPIO_P0_PUDSEL      ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x002C))
+#define IFXMIPS_GPIO_P1_PUDSEL      ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x005C))
+#define IFXMIPS_GPIO_P0_PUDEN       ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0030))
+#define IFXMIPS_GPIO_P1_PUDEN       ((u32 *)(IFXMIPS_GPIO_BASE_ADDR + 0x0060))
+
+
+#define writel ltq_w32
+#define readl ltq_r32
+void dwc_otg_power_on (void)
+{
+       // clear power
+       writel(readl(DANUBE_PMU_PWDCR) | 0x41, DANUBE_PMU_PWDCR);
+       // set clock gating
+       writel(readl(DANUBE_CGU_IFCCR) | 0x30, DANUBE_CGU_IFCCR);
+       // set power
+       writel(readl(DANUBE_PMU_PWDCR) & ~0x1, DANUBE_PMU_PWDCR);
+       writel(readl(DANUBE_PMU_PWDCR) & ~0x40, DANUBE_PMU_PWDCR);
+       writel(readl(DANUBE_PMU_PWDCR) & ~0x8000, DANUBE_PMU_PWDCR);
+
+#if 1//defined (DWC_HOST_ONLY)
+       // make the hardware be a host controller (default)
+       //clear_bit (DANUBE_USBCFG_HDSEL_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG);
+       writel(readl(DANUBE_RCU_UBSCFG) & ~(1<<DANUBE_USBCFG_HDSEL_BIT), DANUBE_RCU_UBSCFG);
+
+       //#elif defined (DWC_DEVICE_ONLY)
+       /* set the controller to the device mode */
+       //    set_bit (DANUBE_USBCFG_HDSEL_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG);
+#else
+#error  "For Danube/Twinpass, it should be HOST or Device Only."
+#endif
+
+       // set the HC's byte-order to big-endian
+       //set_bit (DANUBE_USBCFG_HOST_END_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG);
+       writel(readl(DANUBE_RCU_UBSCFG) | (1<<DANUBE_USBCFG_HOST_END_BIT), DANUBE_RCU_UBSCFG);
+       //clear_bit (DANUBE_USBCFG_SLV_END_BIT, (volatile unsigned long *)DANUBE_RCU_UBSCFG);
+       writel(readl(DANUBE_RCU_UBSCFG) & ~(1<<DANUBE_USBCFG_SLV_END_BIT), DANUBE_RCU_UBSCFG);
+       //writel(0x400, DANUBE_RCU_UBSCFG);
+
+       // PHY configurations.
+       writel (0x14014, (volatile unsigned long *)0xbe10103c);
+}
+
+int ifx_usb_hc_init(unsigned long base_addr, int irq)
+{
+       return 0;
+}
+
+void ifx_usb_hc_remove(void)
+{
+}
diff --git a/drivers/usb/dwc_otg/dwc_otg_ifx.h b/drivers/usb/dwc_otg/dwc_otg_ifx.h
new file mode 100644
index 0000000..402d7a6
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_ifx.h
@@ -0,0 +1,85 @@
+/******************************************************************************
+**
+** FILE NAME    : dwc_otg_ifx.h
+** PROJECT      : Twinpass/Danube
+** MODULES      : DWC OTG USB
+**
+** DATE         : 12 April 2007
+** AUTHOR       : Sung Winder
+** DESCRIPTION  : Platform specific initialization.
+** COPYRIGHT    :       Copyright (c) 2007
+**                      Infineon Technologies AG
+**                      2F, No.2, Li-Hsin Rd., Hsinchu Science Park,
+**                      Hsin-chu City, 300 Taiwan.
+**
+**    This program is free software; you can redistribute it and/or modify
+**    it under the terms of the GNU General Public License as published by
+**    the Free Software Foundation; either version 2 of the License, or
+**    (at your option) any later version.
+**
+** HISTORY
+** $Date          $Author         $Comment
+** 12 April 2007   Sung Winder     Initiate Version
+*******************************************************************************/
+#if !defined(__DWC_OTG_IFX_H__)
+#define __DWC_OTG_IFX_H__
+
+#include <linux/irq.h>
+#include <irq.h>
+
+// 20070316, winder added.
+#ifndef SZ_256K
+#define SZ_256K                         0x00040000
+#endif
+
+extern void dwc_otg_power_on (void);
+
+/* FIXME: The current Linux-2.6 do not have these header files, but anyway, we need these. */
+// #include <asm/danube/danube.h>
+// #include <asm/ifx/irq.h>
+
+/* winder, I used the Danube parameter as default. *
+ * We could change this through module param.      */
+#define IFX_USB_IOMEM_BASE 0x1e101000
+#define IFX_USB_IOMEM_SIZE SZ_256K
+#define IFX_USB_IRQ LTQ_USB_INT
+
+/**
+ * This function is called to set correct clock gating and power.
+ * For Twinpass/Danube board.
+ */
+#ifndef DANUBE_RCU_BASE_ADDR
+#define DANUBE_RCU_BASE_ADDR            (0xBF203000)
+#endif
+
+#ifndef DANUBE_CGU
+#define DANUBE_CGU                          (0xBF103000)
+#endif
+#ifndef DANUBE_CGU_IFCCR
+/***CGU Interface Clock Control Register***/
+#define DANUBE_CGU_IFCCR                        ((volatile u32*)(DANUBE_CGU+ 0x0018))
+#endif
+
+#ifndef DANUBE_PMU
+#define DANUBE_PMU                              (KSEG1+0x1F102000)
+#endif
+#ifndef DANUBE_PMU_PWDCR
+/* PMU Power down Control Register */
+#define DANUBE_PMU_PWDCR                        ((volatile u32*)(DANUBE_PMU+0x001C))
+#endif
+
+
+#define DANUBE_RCU_UBSCFG  ((volatile u32*)(DANUBE_RCU_BASE_ADDR + 0x18))
+#define DANUBE_USBCFG_HDSEL_BIT    11  // 0:host, 1:device
+#define DANUBE_USBCFG_HOST_END_BIT 10  // 0:little_end, 1:big_end
+#define DANUBE_USBCFG_SLV_END_BIT  9   // 0:little_end, 1:big_end
+
+extern void ltq_mask_and_ack_irq(struct irq_data *d);
+
+static void inline mask_and_ack_ifx_irq(int x)
+{
+       struct irq_data d;
+       d.irq = x;
+       ltq_mask_and_ack_irq(&d);
+}
+#endif //__DWC_OTG_IFX_H__
diff --git a/drivers/usb/dwc_otg/dwc_otg_plat.h b/drivers/usb/dwc_otg/dwc_otg_plat.h
new file mode 100644
index 0000000..727d0c4
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_plat.h
@@ -0,0 +1,269 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/platform/dwc_otg_plat.h $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 510301 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_PLAT_H__)
+#define __DWC_OTG_PLAT_H__
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+/**
+ * @file 
+ *
+ * This file contains the Platform Specific constants, interfaces
+ * (functions and macros) for Linux.
+ *
+ */
+/*#if !defined(__LINUX__)
+#error "The contents of this file is Linux specific!!!"
+#endif
+*/
+#include <lantiq_soc.h>
+#define writel ltq_w32
+#define readl ltq_r32
+
+/**
+ * Reads the content of a register.
+ *
+ * @param _reg address of register to read.
+ * @return contents of the register.
+ *
+
+ * Usage:<br>
+ * <code>uint32_t dev_ctl = dwc_read_reg32(&dev_regs->dctl);</code> 
+ */
+static __inline__ uint32_t dwc_read_reg32( volatile uint32_t *_reg) 
+{
+        return readl(_reg);
+};
+
+/** 
+ * Writes a register with a 32 bit value.
+ *
+ * @param _reg address of register to read.
+ * @param _value to write to _reg.
+ *
+ * Usage:<br>
+ * <code>dwc_write_reg32(&dev_regs->dctl, 0); </code>
+ */
+static __inline__ void dwc_write_reg32( volatile uint32_t *_reg, const uint32_t _value) 
+{
+        writel( _value, _reg );
+};
+
+/**  
+ * This function modifies bit values in a register.  Using the
+ * algorithm: (reg_contents & ~clear_mask) | set_mask.
+ *
+ * @param _reg address of register to read.
+ * @param _clear_mask bit mask to be cleared.
+ * @param _set_mask bit mask to be set.
+ *
+ * Usage:<br> 
+ * <code> // Clear the SOF Interrupt Mask bit and <br>
+ * // set the OTG Interrupt mask bit, leaving all others as they were.
+ *    dwc_modify_reg32(&dev_regs->gintmsk, DWC_SOF_INT, DWC_OTG_INT);</code>
+ */
+static __inline__
+ void dwc_modify_reg32( volatile uint32_t *_reg, const uint32_t _clear_mask, const uint32_t _set_mask) 
+{
+        writel( (readl(_reg) & ~_clear_mask) | _set_mask, _reg );  
+};
+
+
+/**
+ * Wrapper for the OS micro-second delay function.
+ * @param[in] _usecs Microseconds of delay
+ */
+static __inline__ void UDELAY( const uint32_t _usecs ) 
+{
+        udelay( _usecs );
+}
+
+/**
+ * Wrapper for the OS milli-second delay function.
+ * @param[in] _msecs milliseconds of delay
+ */
+static __inline__ void MDELAY( const uint32_t _msecs ) 
+{
+        mdelay( _msecs );
+}
+
+/**
+ * Wrapper for the Linux spin_lock.  On the ARM (Integrator)
+ * spin_lock() is a nop.
+ *
+ * @param _lock Pointer to the spinlock.
+ */
+static __inline__ void SPIN_LOCK( spinlock_t *_lock )  
+{
+        spin_lock(_lock);
+}
+
+/**
+ * Wrapper for the Linux spin_unlock.  On the ARM (Integrator)
+ * spin_lock() is a nop.
+ *
+ * @param _lock Pointer to the spinlock.
+ */
+static __inline__ void SPIN_UNLOCK( spinlock_t *_lock )     
+{ 
+        spin_unlock(_lock);
+}
+
+/**
+ * Wrapper (macro) for the Linux spin_lock_irqsave.  On the ARM
+ * (Integrator) spin_lock() is a nop.
+ *
+ * @param _l Pointer to the spinlock.
+ * @param _f unsigned long for irq flags storage.
+ */
+#define SPIN_LOCK_IRQSAVE( _l, _f )  { \
+       spin_lock_irqsave(_l,_f); \
+       }
+
+/**
+ * Wrapper (macro) for the Linux spin_unlock_irqrestore.  On the ARM
+ * (Integrator) spin_lock() is a nop.
+ *
+ * @param _l Pointer to the spinlock.
+ * @param _f unsigned long for irq flags storage.
+ */
+#define SPIN_UNLOCK_IRQRESTORE( _l,_f ) {\
+       spin_unlock_irqrestore(_l,_f);  \
+       }
+
+
+/*
+ * Debugging support vanishes in non-debug builds.  
+ */
+
+
+/**
+ * The Debug Level bit-mask variable.
+ */
+extern uint32_t g_dbg_lvl;
+/**
+ * Set the Debug Level variable.
+ */
+static inline uint32_t SET_DEBUG_LEVEL( const uint32_t _new )
+{
+        uint32_t old = g_dbg_lvl;
+        g_dbg_lvl = _new;
+        return old;
+}
+
+/** When debug level has the DBG_CIL bit set, display CIL Debug messages. */
+#define DBG_CIL                (0x2)
+/** When debug level has the DBG_CILV bit set, display CIL Verbose debug
+ * messages */
+#define DBG_CILV       (0x20)
+/**  When debug level has the DBG_PCD bit set, display PCD (Device) debug
+ *  messages */
+#define DBG_PCD                (0x4)   
+/** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug
+ * messages */
+#define DBG_PCDV       (0x40)  
+/** When debug level has the DBG_HCD bit set, display Host debug messages */
+#define DBG_HCD                (0x8)   
+/** When debug level has the DBG_HCDV bit set, display Verbose Host debug
+ * messages */
+#define DBG_HCDV       (0x80)
+/** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host
+ *  mode. */
+#define DBG_HCD_URB    (0x800)
+
+/** When debug level has any bit set, display debug messages */
+#define DBG_ANY                (0xFF)
+
+/** All debug messages off */
+#define DBG_OFF                0
+
+/** Prefix string for DWC_DEBUG print macros. */
+#define USB_DWC "DWC_otg: "
+
+/** 
+ * Print a debug message when the Global debug level variable contains
+ * the bit defined in <code>lvl</code>.
+ *
+ * @param[in] lvl - Debug level, use one of the DBG_ constants above.
+ * @param[in] x - like printf
+ *
+ *    Example:<p>
+ * <code>
+ *      DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr);
+ * </code>
+ * <br>
+ * results in:<br> 
+ * <code>
+ * usb-DWC_otg: dwc_otg_cil_init(ca867000)
+ * </code>
+ */
+#ifdef DEBUG
+
+# define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)printk( KERN_DEBUG USB_DWC x ); }while(0)
+# define DWC_DEBUGP(x...)      DWC_DEBUGPL(DBG_ANY, x )
+
+# define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl)
+
+#else
+
+# define DWC_DEBUGPL(lvl, x...) do{}while(0)
+# define DWC_DEBUGP(x...)
+
+# define CHK_DEBUG_LEVEL(level) (0)
+
+#endif /*DEBUG*/
+
+/**
+ * Print an Error message.
+ */
+#define DWC_ERROR(x...) printk( KERN_ERR USB_DWC x )
+/**
+ * Print a Warning message.
+ */
+#define DWC_WARN(x...) printk( KERN_WARNING USB_DWC x )
+/**
+ * Print a notice (normal but significant message).
+ */
+#define DWC_NOTICE(x...) printk( KERN_NOTICE USB_DWC x )
+/**
+ *  Basic message printing.
+ */
+#define DWC_PRINT(x...) printk( KERN_INFO USB_DWC x )
+
+#endif
+
diff --git a/drivers/usb/dwc_otg/dwc_otg_regs.h b/drivers/usb/dwc_otg/dwc_otg_regs.h
new file mode 100644
index 0000000..397a954
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_regs.h
@@ -0,0 +1,1797 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_regs.h $
+ * $Revision: 1.1.1.1 $
+ * $Date: 2009-04-17 06:15:34 $
+ * $Change: 631780 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ * 
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ * 
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_REGS_H__
+#define __DWC_OTG_REGS_H__
+
+/**
+ * @file
+ *
+ * This file contains the data structures for accessing the DWC_otg core registers.
+ *
+ * The application interfaces with the HS OTG core by reading from and
+ * writing to the Control and Status Register (CSR) space through the
+ * AHB Slave interface. These registers are 32 bits wide, and the
+ * addresses are 32-bit-block aligned.
+ * CSRs are classified as follows:
+ * - Core Global Registers
+ * - Device Mode Registers
+ * - Device Global Registers
+ * - Device Endpoint Specific Registers
+ * - Host Mode Registers
+ * - Host Global Registers
+ * - Host Port CSRs
+ * - Host Channel Specific Registers
+ *
+ * Only the Core Global registers can be accessed in both Device and
+ * Host modes. When the HS OTG core is operating in one mode, either
+ * Device or Host, the application must not access registers from the
+ * other mode. When the core switches from one mode to another, the
+ * registers in the new mode of operation must be reprogrammed as they
+ * would be after a power-on reset.
+ */
+
+/****************************************************************************/
+/** DWC_otg Core registers .  
+ * The dwc_otg_core_global_regs structure defines the size
+ * and relative field offsets for the Core Global registers.
+ */
+typedef struct dwc_otg_core_global_regs 
+{
+        /** OTG Control and Status Register.  <i>Offset: 000h</i> */
+        volatile uint32_t gotgctl; 
+        /** OTG Interrupt Register.  <i>Offset: 004h</i> */
+        volatile uint32_t gotgint; 
+        /**Core AHB Configuration Register.  <i>Offset: 008h</i> */
+        volatile uint32_t gahbcfg; 
+#define DWC_GLBINTRMASK        0x0001
+#define DWC_DMAENABLE          0x0020
+#define DWC_NPTXEMPTYLVL_EMPTY         0x0080
+#define DWC_NPTXEMPTYLVL_HALFEMPTY     0x0000
+#define DWC_PTXEMPTYLVL_EMPTY  0x0100
+#define DWC_PTXEMPTYLVL_HALFEMPTY      0x0000
+
+
+        /**Core USB Configuration Register.  <i>Offset: 00Ch</i> */
+        volatile uint32_t gusbcfg; 
+        /**Core Reset Register.  <i>Offset: 010h</i> */
+        volatile uint32_t grstctl; 
+        /**Core Interrupt Register.  <i>Offset: 014h</i> */
+        volatile uint32_t gintsts; 
+        /**Core Interrupt Mask Register.  <i>Offset: 018h</i> */
+        volatile uint32_t gintmsk; 
+        /**Receive Status Queue Read Register (Read Only).  <i>Offset: 01Ch</i> */
+        volatile uint32_t grxstsr; 
+        /**Receive Status Queue Read & POP Register (Read Only).  <i>Offset: 020h</i>*/
+        volatile uint32_t grxstsp; 
+        /**Receive FIFO Size Register.  <i>Offset: 024h</i> */
+        volatile uint32_t grxfsiz; 
+        /**Non Periodic Transmit FIFO Size Register.  <i>Offset: 028h</i> */
+        volatile uint32_t gnptxfsiz; 
+        /**Non Periodic Transmit FIFO/Queue Status Register (Read
+         * Only). <i>Offset: 02Ch</i> */
+        volatile uint32_t gnptxsts; 
+        /**I2C Access Register.  <i>Offset: 030h</i> */
+        volatile uint32_t gi2cctl; 
+        /**PHY Vendor Control Register.  <i>Offset: 034h</i> */
+        volatile uint32_t gpvndctl;
+        /**General Purpose Input/Output Register.  <i>Offset: 038h</i> */
+        volatile uint32_t ggpio; 
+        /**User ID Register.  <i>Offset: 03Ch</i> */
+        volatile uint32_t guid; 
+        /**Synopsys ID Register (Read Only).  <i>Offset: 040h</i> */
+        volatile uint32_t gsnpsid;
+        /**User HW Config1 Register (Read Only).  <i>Offset: 044h</i> */
+        volatile uint32_t ghwcfg1; 
+        /**User HW Config2 Register (Read Only).  <i>Offset: 048h</i> */
+        volatile uint32_t ghwcfg2;
+#define DWC_SLAVE_ONLY_ARCH 0
+#define DWC_EXT_DMA_ARCH 1
+#define DWC_INT_DMA_ARCH 2
+
+#define DWC_MODE_HNP_SRP_CAPABLE       0
+#define DWC_MODE_SRP_ONLY_CAPABLE      1
+#define DWC_MODE_NO_HNP_SRP_CAPABLE    2
+#define DWC_MODE_SRP_CAPABLE_DEVICE    3
+#define DWC_MODE_NO_SRP_CAPABLE_DEVICE  4
+#define DWC_MODE_SRP_CAPABLE_HOST      5
+#define DWC_MODE_NO_SRP_CAPABLE_HOST   6
+
+        /**User HW Config3 Register (Read Only).  <i>Offset: 04Ch</i> */
+        volatile uint32_t ghwcfg3;
+        /**User HW Config4 Register (Read Only).  <i>Offset: 050h</i>*/
+        volatile uint32_t ghwcfg4;
+        /** Reserved  <i>Offset: 054h-0FFh</i> */
+        uint32_t reserved[43];
+        /** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */
+        volatile uint32_t hptxfsiz;
+       /** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
+               otherwise Device Transmit FIFO#n Register.
+         * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
+        //volatile uint32_t dptxfsiz[15];
+       volatile uint32_t dptxfsiz_dieptxf[15];
+} dwc_otg_core_global_regs_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Control
+ * and Status Register (GOTGCTL).  Set the bits using the bit 
+ * fields then write the <i>d32</i> value to the register.
+ */
+typedef union gotgctl_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct 
+        {
+               unsigned reserved31_21 : 11;
+               unsigned currmod : 1;
+               unsigned bsesvld : 1;
+               unsigned asesvld : 1;
+               unsigned reserved17 : 1;
+               unsigned conidsts : 1;
+               unsigned reserved15_12 : 4;
+               unsigned devhnpen : 1;
+               unsigned hstsethnpen : 1;
+               unsigned hnpreq : 1;
+               unsigned hstnegscs : 1;
+               unsigned reserved7_2 : 6;
+        unsigned sesreq : 1;
+        unsigned sesreqscs : 1;
+        } b;
+} gotgctl_data_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Interrupt Register
+ * (GOTGINT).  Set/clear the bits using the bit fields then write the <i>d32</i>
+ * value to the register.
+ */
+typedef union gotgint_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct 
+        {
+               /** Current Mode */
+               unsigned reserved31_20 : 12;
+               /** Debounce Done */
+               unsigned debdone : 1;
+               /** A-Device Timeout Change */
+               unsigned adevtoutchng : 1;
+               /** Host Negotiation Detected */
+               unsigned hstnegdet : 1;
+               unsigned reserver16_10 : 7;
+               /** Host Negotiation Success Status Change */
+               unsigned hstnegsucstschng : 1;
+               /** Session Request Success Status Change */
+               unsigned sesreqsucstschng : 1;
+               unsigned reserved3_7 : 5;
+               /** Session End Detected */
+               unsigned sesenddet : 1;
+               /** Current Mode */
+               unsigned reserved1_0 : 2;
+        } b;
+} gotgint_data_t;
+
+
+/**
+ * This union represents the bit fields of the Core AHB Configuration
+ * Register (GAHBCFG).  Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gahbcfg_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct 
+        {
+#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY          1
+#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY      0
+                unsigned reserved9_31 : 23;
+                unsigned ptxfemplvl : 1;
+                unsigned nptxfemplvl_txfemplvl : 1;
+#define DWC_GAHBCFG_DMAENABLE                  1
+                unsigned reserved : 1;
+                unsigned dmaenable : 1;
+#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE       0
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR                 1
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR4        3
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR8        5
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR16       7
+                unsigned hburstlen : 4;
+                unsigned glblintrmsk : 1;
+#define DWC_GAHBCFG_GLBINT_ENABLE              1
+
+        } b;
+} gahbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core USB Configuration
+ * Register (GUSBCFG).  Set the bits using the bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union gusbcfg_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct 
+        {
+       unsigned corrupt_tx_packet: 1;          /*fscz*/
+               unsigned force_device_mode: 1;
+               unsigned force_host_mode: 1;
+               unsigned reserved23_28 : 6;
+               unsigned term_sel_dl_pulse : 1;
+                unsigned ulpi_int_vbus_indicator : 1;
+                unsigned ulpi_ext_vbus_drv : 1;
+               unsigned ulpi_clk_sus_m : 1;
+               unsigned ulpi_auto_res : 1;
+               unsigned ulpi_fsls : 1;
+                unsigned otgutmifssel : 1;
+                unsigned phylpwrclksel : 1;
+                unsigned nptxfrwnden : 1;
+                unsigned usbtrdtim : 4;
+                unsigned hnpcap : 1;
+                unsigned srpcap : 1;
+                unsigned ddrsel : 1;
+                unsigned physel : 1;
+                unsigned fsintf : 1;
+                unsigned ulpi_utmi_sel : 1;
+                unsigned phyif : 1;
+                unsigned toutcal : 3;
+        } b;
+} gusbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core Reset Register
+ * (GRSTCTL).  Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union grstctl_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct 
+        {
+                /** AHB Master Idle.  Indicates the AHB Master State
+                 * Machine is in IDLE condition. */
+                unsigned ahbidle : 1;                
+                /** DMA Request Signal.  Indicated DMA request is in
+                 * probress.  Used for debug purpose. */
+                unsigned dmareq : 1;
+                /** Reserved */
+                       unsigned reserved29_11 : 19;
+                /** TxFIFO Number (TxFNum) (Device and Host).
+                 * 
+                 * This is the FIFO number which needs to be flushed,
+                 * using the TxFIFO Flush bit. This field should not
+                 * be changed until the TxFIFO Flush bit is cleared by
+                 * the core.
+                 *   - 0x0 : Non Periodic TxFIFO Flush
+                 *   - 0x1 : Periodic TxFIFO #1 Flush in device mode
+                 *     or Periodic TxFIFO in host mode
+                 *   - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+                 *   - ...
+                 *   - 0xF : Periodic TxFIFO #15 Flush in device mode
+                 *   - 0x10: Flush all the Transmit NonPeriodic and
+                 *     Transmit Periodic FIFOs in the core
+                 */
+                unsigned txfnum : 5;
+                /** TxFIFO Flush (TxFFlsh) (Device and Host).  
+                 *
+                 * This bit is used to selectively flush a single or
+                 * all transmit FIFOs.  The application must first
+                 * ensure that the core is not in the middle of a
+                 * transaction.  <p>The application should write into
+                 * this bit, only after making sure that neither the
+                 * DMA engine is writing into the TxFIFO nor the MAC
+                 * is reading the data out of the FIFO.  <p>The
+                 * application should wait until the core clears this
+                 * bit, before performing any operations. This bit
+                 * will takes 8 clocks (slowest of PHY or AHB clock)
+                 * to clear.
+                 */
+                unsigned txfflsh : 1;
+                /** RxFIFO Flush (RxFFlsh) (Device and Host)
+                 *
+                 * The application can flush the entire Receive FIFO
+                 * using this bit.  <p>The application must first
+                 * ensure that the core is not in the middle of a
+                 * transaction.  <p>The application should write into
+                 * this bit, only after making sure that neither the
+                 * DMA engine is reading from the RxFIFO nor the MAC
+                 * is writing the data in to the FIFO.  <p>The
+                 * application should wait until the bit is cleared
+                 * before performing any other operations. This bit
+                 * will takes 8 clocks (slowest of PHY or AHB clock)
+                 * to clear.
+                 */
+                unsigned rxfflsh : 1;
+                /** In Token Sequence Learning Queue Flush
+                 * (INTknQFlsh) (Device Only)
+                 */
+                unsigned intknqflsh : 1;
+                /** Host Frame Counter Reset (Host Only)<br>
+                 * 
+                 * The application can reset the (micro)frame number
+                 * counter inside the core, using this bit. When the
+                 * (micro)frame counter is reset, the subsequent SOF
+                 * sent out by the core, will have a (micro)frame
+                 * number of 0.
+                 */
+                unsigned hstfrm : 1;
+                /** Hclk Soft Reset
+                *
+                * The application uses this bit to reset the control logic in
+                * the AHB clock domain. Only AHB clock domain pipelines are
+                * reset.
+                */
+                unsigned hsftrst : 1;
+                /** Core Soft Reset (CSftRst) (Device and Host)
+                 *
+                 * The application can flush the control logic in the
+                 * entire core using this bit. This bit resets the
+                 * pipelines in the AHB Clock domain as well as the
+                 * PHY Clock domain.
+                 *
+                 * The state machines are reset to an IDLE state, the
+                 * control bits in the CSRs are cleared, all the
+                 * transmit FIFOs and the receive FIFO are flushed.
+                 *
+                 * The status mask bits that control the generation of
+                 * the interrupt, are cleared, to clear the
+                 * interrupt. The interrupt status bits are not
+                 * cleared, so the application can get the status of
+                 * any events that occurred in the core after it has
+                 * set this bit.
+                 *
+                 * Any transactions on the AHB are terminated as soon
+                 * as possible following the protocol. Any
+                 * transactions on the USB are terminated immediately.
+                 *
+                 * The configuration settings in the CSRs are
+                 * unchanged, so the software doesn't have to
+                 * reprogram these registers (Device
+                 * Configuration/Host Configuration/Core System
+                 * Configuration/Core PHY Configuration).
+                 *
+                 * The application can write to this bit, any time it
+                 * wants to reset the core. This is a self clearing
+                 * bit and the core clears this bit after all the
+                 * necessary logic is reset in the core, which may
+                 * take several clocks, depending on the current state
+                 * of the core.
+                 */
+                unsigned csftrst : 1;
+        } b;
+} grstctl_t;
+
+
+/**
+ * This union represents the bit fields of the Core Interrupt Mask
+ * Register (GINTMSK).  Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gintmsk_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct 
+        {
+                unsigned wkupintr : 1;
+                unsigned sessreqintr : 1;
+                unsigned disconnect : 1;
+                unsigned conidstschng : 1;
+                unsigned reserved27 : 1;
+                unsigned ptxfempty : 1;
+                unsigned hcintr : 1;
+                unsigned portintr : 1;
+                unsigned reserved22_23 : 2;
+                unsigned incomplisoout : 1;
+                unsigned incomplisoin : 1;
+                unsigned outepintr : 1;
+                unsigned inepintr : 1;
+                unsigned epmismatch : 1;
+                unsigned reserved16 : 1;
+                unsigned eopframe : 1;
+                unsigned isooutdrop : 1;
+                unsigned enumdone : 1;
+                unsigned usbreset : 1;
+                unsigned usbsuspend : 1;
+                unsigned erlysuspend : 1;
+                unsigned i2cintr : 1;
+                unsigned reserved8 : 1;
+                unsigned goutnakeff : 1;
+                unsigned ginnakeff : 1;
+                unsigned nptxfempty : 1;
+                unsigned rxstsqlvl : 1;
+                unsigned sofintr : 1;
+                unsigned otgintr : 1;
+                unsigned modemismatch : 1;
+                unsigned reserved0 : 1;
+        } b;
+} gintmsk_data_t;
+/**
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS).  Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union gintsts_data
+{
+        /** raw register data */
+        uint32_t d32;
+#define DWC_SOF_INTR_MASK 0x0008
+        /** register bits */
+        struct 
+        {
+#define DWC_HOST_MODE 1
+                unsigned wkupintr : 1;
+                unsigned sessreqintr : 1;
+                unsigned disconnect : 1;
+                unsigned conidstschng : 1;
+                unsigned reserved27 : 1;
+                unsigned ptxfempty : 1;
+                unsigned hcintr : 1;
+                unsigned portintr : 1;
+                unsigned reserved22_23 : 2;
+                unsigned incomplisoout : 1;
+                unsigned incomplisoin : 1;
+                unsigned outepintr : 1;
+                unsigned inepint: 1;
+                unsigned epmismatch : 1;
+                unsigned intokenrx : 1;
+                unsigned eopframe : 1;
+                unsigned isooutdrop : 1;
+                unsigned enumdone : 1;
+                unsigned usbreset : 1;
+                unsigned usbsuspend : 1;
+                unsigned erlysuspend : 1;
+                unsigned i2cintr : 1;
+                unsigned reserved8 : 1;
+                unsigned goutnakeff : 1;
+                unsigned ginnakeff : 1;
+                unsigned nptxfempty : 1;
+                unsigned rxstsqlvl : 1;
+                unsigned sofintr : 1;
+                unsigned otgintr : 1;
+                unsigned modemismatch : 1;
+                unsigned curmode : 1;
+        } b;
+} gintsts_data_t;
+
+
+/**
+ * This union represents the bit fields in the Device Receive Status Read and 
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i> 
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union device_grxsts_data {
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+       struct {
+         unsigned reserved : 7;
+         unsigned fn : 4;
+#define DWC_STS_DATA_UPDT      0x2               // OUT Data Packet
+#define DWC_STS_XFER_COMP      0x3               // OUT Data Transfer Complete
+
+#define DWC_DSTS_GOUT_NAK      0x1               // Global OUT NAK
+#define DWC_DSTS_SETUP_COMP    0x4               // Setup Phase Complete
+#define DWC_DSTS_SETUP_UPDT    0x6               // SETUP Packet
+         unsigned pktsts : 4;
+         unsigned dpid : 2;
+         unsigned bcnt : 11;
+         unsigned epnum : 4;
+        } b;
+} device_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Receive Status Read and 
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i> 
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union host_grxsts_data {
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+       struct {
+         unsigned reserved31_21 : 11;
+#define DWC_GRXSTS_PKTSTS_IN              0x2
+#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP    0x3
+#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5
+#define DWC_GRXSTS_PKTSTS_CH_HALTED       0x7
+         unsigned pktsts : 4;
+         unsigned dpid : 2;
+         unsigned bcnt : 11;
+         unsigned chnum : 4;
+        } b;
+} host_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
+ * GNPTXFSIZ, DPTXFSIZn). Read the register into the <i>d32</i> element then
+ * read out the bits using the <i>b</i>it elements.
+ */
+typedef union fifosize_data {
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+       struct {
+               unsigned depth : 16;
+               unsigned startaddr : 16;
+        } b;
+} fifosize_data_t;
+
+/**
+ * This union represents the bit fields in the Non-Periodic Transmit
+ * FIFO/Queue Status Register (GNPTXSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union gnptxsts_data {
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+       struct {
+                unsigned reserved : 1;
+                /** Top of the Non-Periodic Transmit Request Queue 
+                 *  - bits 30:27 - Channel/EP Number
+                 *  - bits 26:25 - Token Type 
+                 *  - bit 24 - Terminate (Last entry for the selected
+                 *    channel/EP)
+                 *    - 2'b00 - IN/OUT
+                 *    - 2'b01 - Zero Length OUT
+                 *    - 2'b10 - PING/Complete Split
+                 *    - 2'b11 - Channel Halt
+
+                 */
+                unsigned nptxqtop_chnep : 4;
+                unsigned nptxqtop_token : 2;
+                unsigned nptxqtop_terminate : 1;
+               unsigned nptxqspcavail : 8;
+               unsigned nptxfspcavail : 16;
+        } b;
+} gnptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Transmit
+ * FIFO Status Register (DTXFSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union dtxfsts_data     /* fscz */       //*
+{
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved : 16;
+               unsigned txfspcavail : 16;
+       } b;
+} dtxfsts_data_t;
+
+/**
+ * This union represents the bit fields in the I2C Control Register
+ * (I2CCTL). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gi2cctl_data {
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+       struct {
+               unsigned bsydne : 1;
+               unsigned rw : 1;
+               unsigned reserved : 2;
+               unsigned i2cdevaddr : 2;
+               unsigned i2csuspctl : 1;
+               unsigned ack : 1;
+               unsigned i2cen : 1;
+               unsigned addr : 7;
+               unsigned regaddr : 8;
+               unsigned rwdata : 8;
+        } b;
+} gi2cctl_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config1
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg1_data {
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+                unsigned ep_dir15 : 2;
+                unsigned ep_dir14 : 2;
+                unsigned ep_dir13 : 2;
+                unsigned ep_dir12 : 2;
+                unsigned ep_dir11 : 2;
+                unsigned ep_dir10 : 2;
+                unsigned ep_dir9 : 2;
+                unsigned ep_dir8 : 2;
+                unsigned ep_dir7 : 2;
+                unsigned ep_dir6 : 2;
+                unsigned ep_dir5 : 2;
+                unsigned ep_dir4 : 2;
+                unsigned ep_dir3 : 2;
+                unsigned ep_dir2 : 2;
+                unsigned ep_dir1 : 2;
+                unsigned ep_dir0 : 2;
+        } b;
+} hwcfg1_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config2
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg2_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+                /* GHWCFG2 */
+                unsigned reserved31 : 1;
+                unsigned dev_token_q_depth : 5;
+                unsigned host_perio_tx_q_depth : 2;
+                unsigned nonperio_tx_q_depth : 2;
+                unsigned rx_status_q_depth : 2;
+                unsigned dynamic_fifo : 1;
+                unsigned perio_ep_supported : 1;
+                unsigned num_host_chan : 4;
+                unsigned num_dev_ep : 4;
+                unsigned fs_phy_type : 2;
+#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1
+#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3
+                unsigned hs_phy_type : 2;
+                unsigned point2point : 1;
+                unsigned architecture : 2;
+#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0
+#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1
+#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6
+                unsigned op_mode : 3;
+        } b;
+} hwcfg2_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config3
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg3_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+                /* GHWCFG3 */
+                unsigned dfifo_depth : 16;
+                unsigned reserved15_13 : 3;
+                unsigned ahb_phy_clock_synch : 1;
+                unsigned synch_reset_type : 1;
+                unsigned optional_features : 1;
+                unsigned vendor_ctrl_if : 1;
+                unsigned i2c : 1;
+                unsigned otg_func : 1;
+                unsigned packet_size_cntr_width : 3;
+                unsigned xfer_size_cntr_width : 4;
+        } b;
+} hwcfg3_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config4
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg4_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+unsigned reserved31_30 : 2;    /* fscz */
+               unsigned num_in_eps : 4;
+               unsigned ded_fifo_en : 1;
+
+                unsigned session_end_filt_en : 1;                
+                unsigned b_valid_filt_en : 1;                
+                unsigned a_valid_filt_en : 1;
+                unsigned vbus_valid_filt_en : 1;
+                unsigned iddig_filt_en : 1;
+                unsigned num_dev_mode_ctrl_ep : 4;
+                unsigned utmi_phy_data_width : 2;
+                unsigned min_ahb_freq : 9;
+                unsigned power_optimiz : 1;
+                unsigned num_dev_perio_in_ep : 4;
+        } b;
+} hwcfg4_data_t;
+
+////////////////////////////////////////////
+// Device Registers
+/**
+ * Device Global Registers. <i>Offsets 800h-BFFh</i>
+ *
+ * The following structures define the size and relative field offsets
+ * for the Device Mode Registers.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_global_regs 
+{
+        /** Device Configuration Register. <i>Offset 800h</i> */
+        volatile uint32_t dcfg; 
+        /** Device Control Register. <i>Offset: 804h</i> */
+        volatile uint32_t dctl; 
+        /** Device Status Register (Read Only). <i>Offset: 808h</i> */
+        volatile uint32_t dsts; 
+        /** Reserved. <i>Offset: 80Ch</i> */
+        uint32_t unused;       
+        /** Device IN Endpoint Common Interrupt Mask
+         * Register. <i>Offset: 810h</i> */
+        volatile uint32_t diepmsk; 
+        /** Device OUT Endpoint Common Interrupt Mask
+         * Register. <i>Offset: 814h</i> */
+        volatile uint32_t doepmsk;     
+        /** Device All Endpoints Interrupt Register.  <i>Offset: 818h</i> */
+        volatile uint32_t daint;       
+        /** Device All Endpoints Interrupt Mask Register.  <i>Offset:
+         * 81Ch</i> */
+        volatile uint32_t daintmsk; 
+        /** Device IN Token Queue Read Register-1 (Read Only).
+         * <i>Offset: 820h</i> */
+        volatile uint32_t dtknqr1;     
+        /** Device IN Token Queue Read Register-2 (Read Only).
+         * <i>Offset: 824h</i> */ 
+        volatile uint32_t dtknqr2;     
+        /** Device VBUS  discharge Register.  <i>Offset: 828h</i> */
+        volatile uint32_t dvbusdis;    
+        /** Device VBUS Pulse Register.  <i>Offset: 82Ch</i> */
+        volatile uint32_t dvbuspulse;
+        /** Device IN Token Queue Read Register-3 (Read Only).
+        *  Device Thresholding control register (Read/Write)
+        * <i>Offset: 830h</i> */
+           volatile uint32_t dtknqr3_dthrctl;
+       /** Device IN Token Queue Read Register-4 (Read Only). /
+        *  Device IN EPs empty Inr. Mask Register (Read/Write)
+         * <i>Offset: 834h</i> */ 
+           volatile uint32_t dtknqr4_fifoemptymsk;
+} dwc_otg_device_global_regs_t; 
+
+/**
+ * This union represents the bit fields in the Device Configuration
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.  Write the
+ * <i>d32</i> member to the dcfg register.
+ */
+typedef union dcfg_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+                unsigned reserved31_23 : 9;
+                /** In Endpoint Mis-match count */
+                unsigned epmscnt : 5;
+                unsigned reserved13_17 : 5;
+                /** Periodic Frame Interval */
+#define DWC_DCFG_FRAME_INTERVAL_80 0
+#define DWC_DCFG_FRAME_INTERVAL_85 1
+#define DWC_DCFG_FRAME_INTERVAL_90 2
+#define DWC_DCFG_FRAME_INTERVAL_95 3
+                unsigned perfrint : 2;
+                /** Device Addresses */
+                unsigned devaddr : 7;
+                unsigned reserved3 : 1;
+                /** Non Zero Length Status OUT Handshake */
+#define DWC_DCFG_SEND_STALL 1
+                unsigned nzstsouthshk : 1;
+                /** Device Speed */
+                unsigned devspd : 2;
+        } b;
+} dcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Device Control
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dctl_data
+{
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved : 20;
+               /** Power-On Programming Done */
+               unsigned pwronprgdone : 1;
+               /** Clear Global OUT NAK */
+               unsigned cgoutnak : 1;
+               /** Set Global OUT NAK */
+               unsigned sgoutnak : 1;
+               /** Clear Global Non-Periodic IN NAK */
+               unsigned cgnpinnak : 1;
+               /** Set Global Non-Periodic IN NAK */
+               unsigned sgnpinnak : 1;
+               /** Test Control */
+               unsigned tstctl : 3;
+               /** Global OUT NAK Status */
+               unsigned goutnaksts : 1;
+               /** Global Non-Periodic IN NAK Status */
+               unsigned gnpinnaksts : 1;
+               /** Soft Disconnect */
+               unsigned sftdiscon : 1;
+               /** Remote Wakeup */
+               unsigned rmtwkupsig : 1;
+       } b;
+} dctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device Status
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dsts_data
+{
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved22_31 : 10;
+               /** Frame or Microframe Number of the received SOF */
+               unsigned soffn : 14;
+               unsigned reserved4_7: 4;
+               /** Erratic Error */
+               unsigned errticerr : 1;
+               /** Enumerated Speed */
+#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0
+#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1
+#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ           2
+#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ          3
+               unsigned enumspd : 2;
+               /** Suspend Status */
+               unsigned suspsts : 1;
+        } b;
+} dsts_data_t;
+
+
+/**
+ * This union represents the bit fields in the Device IN EP Interrupt
+ * Register and the Device IN EP Common Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *   bits using the <i>b</i>it elements.
+ */
+typedef union diepint_data
+{
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved07_31 : 23;
+               unsigned txfifoundrn : 1;
+               /** IN Endpoint HAK Effective mask */
+        unsigned emptyintr : 1;
+               /** IN Endpoint NAK Effective mask */
+               unsigned inepnakeff : 1;
+               /** IN Token Received with EP mismatch mask */
+               unsigned intknepmis : 1;
+               /** IN Token received with TxF Empty mask */
+               unsigned intktxfemp : 1;
+               /** TimeOUT Handshake mask (non-ISOC EPs) */
+               unsigned timeout : 1;
+               /** AHB Error mask */
+               unsigned ahberr : 1;
+               /** Endpoint disable mask */
+               unsigned epdisabled : 1;
+               /** Transfer complete mask */
+               unsigned xfercompl : 1;
+        } b;
+} diepint_data_t;
+/**
+ * This union represents the bit fields in the Device IN EP Common
+ * Interrupt Mask Register.
+ */
+typedef union diepint_data diepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP Interrupt
+ * Registerand Device OUT EP Common Interrupt Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *   bits using the <i>b</i>it elements.
+ */
+typedef union doepint_data
+{
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               unsigned reserved04_31 : 27;
+               /** OUT Token Received when Endpoint Disabled */
+               unsigned outtknepdis : 1;
+               /** Setup Phase Done (contorl EPs) */
+               unsigned setup : 1;
+               /** AHB Error */
+               unsigned ahberr : 1;
+               /** Endpoint disable  */
+               unsigned epdisabled : 1;
+               /** Transfer complete */
+               unsigned xfercompl : 1;
+        } b;
+} doepint_data_t;
+/**
+ * This union represents the bit fields in the Device OUT EP Common
+ * Interrupt Mask Register.
+ */
+typedef union doepint_data doepmsk_data_t;
+
+
+/**
+ * This union represents the bit fields in the Device All EP Interrupt
+ * and Mask Registers.
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *   bits using the <i>b</i>it elements.
+ */
+typedef union daint_data
+{
+       /** raw register data */
+       uint32_t d32;
+       /** register bits */
+       struct {
+               /** OUT Endpoint bits */
+               unsigned out : 16;
+               /** IN Endpoint bits */
+               unsigned in : 16;
+        } ep;
+       struct {
+               /** OUT Endpoint bits */
+               unsigned outep15 : 1;
+               unsigned outep14 : 1;
+               unsigned outep13 : 1;
+               unsigned outep12 : 1;
+               unsigned outep11 : 1;
+               unsigned outep10 : 1;
+               unsigned outep9  : 1;
+               unsigned outep8  : 1;
+               unsigned outep7  : 1;
+               unsigned outep6  : 1;
+               unsigned outep5  : 1;
+               unsigned outep4  : 1;
+               unsigned outep3  : 1;
+               unsigned outep2  : 1;
+               unsigned outep1  : 1;
+               unsigned outep0  : 1;
+               /** IN Endpoint bits */
+               unsigned inep15 : 1;
+               unsigned inep14 : 1;
+               unsigned inep13 : 1;
+               unsigned inep12 : 1;
+               unsigned inep11 : 1;
+               unsigned inep10 : 1;
+               unsigned inep9  : 1;
+               unsigned inep8  : 1;
+               unsigned inep7  : 1;
+               unsigned inep6  : 1;
+               unsigned inep5  : 1;
+               unsigned inep4  : 1;
+               unsigned inep3  : 1;
+               unsigned inep2  : 1;
+               unsigned inep1  : 1;
+               unsigned inep0  : 1;
+        } b;
+} daint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN Token Queue
+ * Read Registers.
+ * - Read the register into the <i>d32</i> member.
+ * - READ-ONLY Register
+ */
+typedef union dtknq1_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+                /** EP Numbers of IN Tokens 0 ... 4 */
+                unsigned epnums0_5 : 24;
+                /** write pointer has wrapped. */
+                unsigned wrap_bit : 1;
+                /** Reserved */
+                unsigned reserved05_06 : 2;
+                /** In Token Queue Write Pointer */
+                unsigned intknwptr : 5;
+        }b;
+} dtknq1_data_t;
+
+/**
+ * This union represents Threshold control Register
+ * - Read and write the register into the <i>d32</i> member.
+ * - READ-WRITABLE Register
+ */
+typedef union dthrctl_data                     //* /*fscz */
+{
+    /** raw register data */
+    uint32_t d32;
+    /** register bits */
+    struct {
+        /** Reserved */
+        unsigned reserved26_31 : 6;
+        /** Rx Thr. Length */
+        unsigned rx_thr_len : 9;
+        /** Rx Thr. Enable */
+        unsigned rx_thr_en : 1;
+        /** Reserved */
+        unsigned reserved11_15 : 5;
+        /** Tx Thr. Length */
+        unsigned tx_thr_len : 9;
+        /** ISO Tx Thr. Enable */
+        unsigned iso_thr_en : 1;
+        /** non ISO Tx Thr. Enable */
+        unsigned non_iso_thr_en : 1;
+
+    }b;
+} dthrctl_data_t;
+
+/**
+ * Device Logical IN Endpoint-Specific Registers. <i>Offsets
+ * 900h-AFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_in_ep_regs 
+{
+        /** Device IN Endpoint Control Register. <i>Offset:900h +
+         * (ep_num * 20h) + 00h</i> */
+        volatile uint32_t diepctl;
+        /** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */
+        uint32_t reserved04;    
+        /** Device IN Endpoint Interrupt Register. <i>Offset:900h +
+         * (ep_num * 20h) + 08h</i> */
+        volatile uint32_t diepint; 
+        /** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */
+        uint32_t reserved0C;    
+        /** Device IN Endpoint Transfer Size
+         * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */
+        volatile uint32_t dieptsiz; 
+        /** Device IN Endpoint DMA Address Register. <i>Offset:900h +
+         * (ep_num * 20h) + 14h</i> */
+        volatile uint32_t diepdma; 
+        /** Reserved. <i>Offset:900h + (ep_num * 20h) + 18h - 900h +
+         * (ep_num * 20h) + 1Ch</i>*/
+           volatile uint32_t dtxfsts;
+       /** Reserved. <i>Offset:900h + (ep_num * 20h) + 1Ch - 900h +
+            * (ep_num * 20h) + 1Ch</i>*/
+       uint32_t reserved18;
+} dwc_otg_dev_in_ep_regs_t;
+
+/**
+ * Device Logical OUT Endpoint-Specific Registers. <i>Offsets:
+ * B00h-CFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_out_ep_regs 
+{
+        /** Device OUT Endpoint Control Register. <i>Offset:B00h +
+         * (ep_num * 20h) + 00h</i> */
+        volatile uint32_t doepctl; 
+        /** Device OUT Endpoint Frame number Register.  <i>Offset:
+         * B00h + (ep_num * 20h) + 04h</i> */ 
+        volatile uint32_t doepfn; 
+        /** Device OUT Endpoint Interrupt Register. <i>Offset:B00h +
+         * (ep_num * 20h) + 08h</i> */
+        volatile uint32_t doepint; 
+        /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */
+        uint32_t reserved0C;    
+        /** Device OUT Endpoint Transfer Size Register. <i>Offset:
+         * B00h + (ep_num * 20h) + 10h</i> */
+        volatile uint32_t doeptsiz; 
+        /** Device OUT Endpoint DMA Address Register. <i>Offset:B00h
+         * + (ep_num * 20h) + 14h</i> */
+        volatile uint32_t doepdma; 
+        /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 18h - B00h +
+         * (ep_num * 20h) + 1Ch</i> */
+        uint32_t unused[2];     
+} dwc_otg_dev_out_ep_regs_t;
+
+/**
+ * This union represents the bit fields in the Device EP Control
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union depctl_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+               /** Endpoint Enable */
+               unsigned epena : 1;
+               /** Endpoint Disable */
+               unsigned epdis : 1;
+                /** Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
+                 * Writing to this field sets the Endpoint DPID (DPID)
+                 * field in this register to DATA1 Set Odd
+                 * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints)
+                 * Writing to this field sets the Even/Odd
+                 * (micro)frame (EO_FrNum) field to odd (micro) frame.
+                 */
+                unsigned setd1pid : 1;
+                /** Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
+                 * Writing to this field sets the Endpoint DPID (DPID)
+                 * field in this register to DATA0. Set Even
+                 * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints)
+                 * Writing to this field sets the Even/Odd
+                 * (micro)frame (EO_FrNum) field to even (micro)
+                 * frame.
+                 */
+                unsigned setd0pid : 1;
+               /** Set NAK */
+               unsigned snak : 1;
+               /** Clear NAK */
+               unsigned cnak : 1;
+               /** Tx Fifo Number 
+                * IN EPn/IN EP0
+                * OUT EPn/OUT EP0 - reserved */
+               unsigned txfnum : 4;
+               /** Stall Handshake */
+               unsigned stall : 1;
+               /** Snoop Mode 
+                * OUT EPn/OUT EP0
+                * IN EPn/IN EP0 - reserved */
+               unsigned snp : 1;
+               /** Endpoint Type 
+                *  2'b00: Control
+                *  2'b01: Isochronous
+                *  2'b10: Bulk
+                *  2'b11: Interrupt */
+               unsigned eptype : 2;
+               /** NAK Status */
+               unsigned naksts : 1;
+               /** Endpoint DPID (INTR/Bulk IN and OUT endpoints)
+                 * This field contains the PID of the packet going to
+                 * be received or transmitted on this endpoint. The
+                 * application should program the PID of the first
+                 * packet going to be received or transmitted on this
+                 * endpoint , after the endpoint is
+                 * activated. Application use the SetD1PID and
+                 * SetD0PID fields of this register to program either
+                 * D0 or D1 PID.
+                 * 
+                 * The encoding for this field is
+                 *   - 0: D0
+                 *   - 1: D1
+                 */
+               unsigned dpid : 1;
+               /** USB Active Endpoint */
+               unsigned usbactep : 1;
+               /** Next Endpoint 
+                * IN EPn/IN EP0 
+                * OUT EPn/OUT EP0 - reserved */
+               unsigned nextep : 4;
+               /** Maximum Packet Size 
+                * IN/OUT EPn
+                * IN/OUT EP0 - 2 bits
+                *   2'b00: 64 Bytes
+                *   2'b01: 32
+                *   2'b10: 16
+                *   2'b11: 8 */
+#define DWC_DEP0CTL_MPS_64   0
+#define DWC_DEP0CTL_MPS_32   1
+#define DWC_DEP0CTL_MPS_16   2
+#define DWC_DEP0CTL_MPS_8    3
+               unsigned mps : 11;
+        } b;
+} depctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP Transfer
+ * Size Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+               unsigned reserved : 1;
+               /** Multi Count - Periodic IN endpoints */
+               unsigned mc : 2;
+               /** Packet Count */
+               unsigned pktcnt : 10;
+               /** Transfer size */
+               unsigned xfersize : 19;
+        } b;
+} deptsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP 0 Transfer
+ * Size Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz0_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+                unsigned reserved31 : 1;
+                /**Setup Packet Count (DOEPTSIZ0 Only) */
+                unsigned supcnt : 2;
+                /** Reserved */
+               unsigned reserved28_20 : 9;
+               /** Packet Count */
+               unsigned pktcnt : 1;
+                /** Reserved */
+               unsigned reserved18_7 : 12;
+               /** Transfer size */
+               unsigned xfersize : 7;
+        } b;
+} deptsiz0_data_t;
+
+
+/** Maximum number of Periodic FIFOs */
+#define MAX_PERIO_FIFOS 15
+/** Maximum number of TX FIFOs */
+#define MAX_TX_FIFOS 15
+/** Maximum number of Endpoints/HostChannels */
+#define MAX_EPS_CHANNELS 16
+//#define MAX_EPS_CHANNELS 4
+
+/**
+ * The dwc_otg_dev_if structure contains information needed to manage
+ * the DWC_otg controller acting in device mode. It represents the
+ * programming view of the device-specific aspects of the controller.
+ */
+typedef struct dwc_otg_dev_if {
+        /** Pointer to device Global registers.
+         * Device Global Registers starting at offset 800h
+         */
+        dwc_otg_device_global_regs_t *dev_global_regs; 
+#define DWC_DEV_GLOBAL_REG_OFFSET 0x800
+
+        /** 
+         * Device Logical IN Endpoint-Specific Registers 900h-AFCh 
+         */
+        dwc_otg_dev_in_ep_regs_t     *in_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_IN_EP_REG_OFFSET 0x900
+#define DWC_EP_REG_OFFSET 0x20
+
+        /** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
+        dwc_otg_dev_out_ep_regs_t    *out_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00
+
+        /* Device configuration information*/
+        uint8_t  speed;              /**< Device Speed  0: Unknown, 1: LS, 2:FS, 3: HS */
+        //uint8_t  num_eps;            /**< Number of EPs  range: 0-16 (includes EP0) */
+        //uint8_t  num_perio_eps;      /**< # of Periodic EP range: 0-15 */
+       /*fscz */
+    uint8_t  num_in_eps;         /**< Number # of Tx EP range: 0-15 exept ep0 */
+    uint8_t  num_out_eps;        /**< Number # of Rx EP range: 0-15 exept ep 0*/
+
+        /** Size of periodic FIFOs (Bytes) */
+        uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS];  
+
+       /** Size of Tx FIFOs (Bytes) */
+       uint16_t tx_fifo_size[MAX_TX_FIFOS];
+
+       /** Thresholding enable flags and length varaiables **/
+       uint16_t rx_thr_en;
+       uint16_t iso_tx_thr_en;
+       uint16_t non_iso_tx_thr_en;
+
+       uint16_t rx_thr_length;
+       uint16_t tx_thr_length;
+} dwc_otg_dev_if_t;
+
+/**
+ * This union represents the bit fields in the Power and Clock Gating Control
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union pcgcctl_data     
+{
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               unsigned reserved31_05 : 27;
+               /** PHY Suspended */
+               unsigned physuspended : 1;
+               /** Reset Power Down Modules */
+               unsigned rstpdwnmodule : 1;
+               /** Power Clamp */
+               unsigned pwrclmp : 1;
+               /** Gate Hclk */
+               unsigned gatehclk : 1;
+               /** Stop Pclk */
+               unsigned stoppclk : 1;
+       } b;
+} pcgcctl_data_t;
+
+/////////////////////////////////////////////////
+// Host Mode Register Structures
+//
+/**
+ * The Host Global Registers structure defines the size and relative
+ * field offsets for the Host Mode Global Registers.  Host Global
+ * Registers offsets 400h-7FFh.
+*/
+typedef struct dwc_otg_host_global_regs 
+{
+        /** Host Configuration Register.   <i>Offset: 400h</i> */
+        volatile uint32_t hcfg;       
+        /** Host Frame Interval Register.   <i>Offset: 404h</i> */
+        volatile uint32_t hfir;       
+        /** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */
+        volatile uint32_t hfnum; 
+        /** Reserved.   <i>Offset: 40Ch</i> */
+        uint32_t reserved40C;
+        /** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */
+        volatile uint32_t hptxsts;    
+        /** Host All Channels Interrupt Register. <i>Offset: 414h</i> */
+        volatile uint32_t haint;      
+        /** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */
+        volatile uint32_t haintmsk;   
+} dwc_otg_host_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Configuration Register.
+ * Read the register into the <i>d32</i> member then set/clear the bits using
+ * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register.
+ */
+typedef union hcfg_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+                /** Reserved */
+               //unsigned reserved31_03 : 29;
+               /** FS/LS Only Support */
+               unsigned fslssupp : 1;
+               /** FS/LS Phy Clock Select */
+#define DWC_HCFG_30_60_MHZ 0
+#define DWC_HCFG_48_MHZ    1
+#define DWC_HCFG_6_MHZ     2
+               unsigned fslspclksel : 2;
+        } b;
+} hcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.  
+ */
+typedef union hfir_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+               unsigned reserved : 16;
+               unsigned frint : 16;
+        } b;
+} hfir_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.  
+ */
+typedef union hfnum_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+               unsigned frrem : 16;
+#define DWC_HFNUM_MAX_FRNUM 0x3FFF
+               unsigned frnum : 16;
+        } b;
+} hfnum_data_t;
+
+typedef union hptxsts_data
+{
+       /** raw register data */
+       uint32_t d32;
+
+       /** register bits */
+       struct {
+               /** Top of the Periodic Transmit Request Queue
+                *  - bit 24 - Terminate (last entry for the selected channel)
+                *  - bits 26:25 - Token Type
+                *    - 2'b00 - Zero length
+                *    - 2'b01 - Ping
+                *    - 2'b10 - Disable
+                *  - bits 30:27 - Channel Number
+                *  - bit 31 - Odd/even microframe
+                */
+               unsigned ptxqtop_odd : 1;
+               unsigned ptxqtop_chnum : 4;
+               unsigned ptxqtop_token : 2;
+               unsigned ptxqtop_terminate : 1;
+               unsigned ptxqspcavail : 8;
+               unsigned ptxfspcavail : 16;
+       } b;
+} hptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Port Control and Status
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hprt0 register.
+ */
+typedef union hprt0_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+               unsigned reserved19_31 : 13;
+#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0
+#define DWC_HPRT0_PRTSPD_FULL_SPEED 1
+#define DWC_HPRT0_PRTSPD_LOW_SPEED  2
+               unsigned prtspd : 2;
+               unsigned prttstctl : 4;
+               unsigned prtpwr : 1;
+               unsigned prtlnsts : 2;
+               unsigned reserved9 : 1;
+               unsigned prtrst : 1;
+               unsigned prtsusp : 1;
+               unsigned prtres : 1;
+               unsigned prtovrcurrchng : 1;
+               unsigned prtovrcurract : 1;
+               unsigned prtenchng : 1;
+               unsigned prtena : 1;
+               unsigned prtconndet : 1;
+               unsigned prtconnsts : 1;
+        } b;
+} hprt0_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt 
+ * Register.  
+ */
+typedef union haint_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+               unsigned reserved : 16;
+               unsigned ch15 : 1;
+               unsigned ch14 : 1;
+               unsigned ch13 : 1;
+               unsigned ch12 : 1;
+               unsigned ch11 : 1;
+               unsigned ch10 : 1;
+               unsigned ch9 : 1;
+               unsigned ch8 : 1;
+               unsigned ch7 : 1;
+               unsigned ch6 : 1;
+               unsigned ch5 : 1;
+               unsigned ch4 : 1;
+               unsigned ch3 : 1;
+               unsigned ch2 : 1;
+               unsigned ch1 : 1;
+               unsigned ch0 : 1;
+       } b;
+        struct {
+               unsigned reserved : 16;
+               unsigned chint : 16;
+       } b2;
+} haint_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt 
+ * Register.  
+ */
+typedef union haintmsk_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+               unsigned reserved : 16;
+               unsigned ch15 : 1;
+               unsigned ch14 : 1;
+               unsigned ch13 : 1;
+               unsigned ch12 : 1;
+               unsigned ch11 : 1;
+               unsigned ch10 : 1;
+               unsigned ch9 : 1;
+               unsigned ch8 : 1;
+               unsigned ch7 : 1;
+               unsigned ch6 : 1;
+               unsigned ch5 : 1;
+               unsigned ch4 : 1;
+               unsigned ch3 : 1;
+               unsigned ch2 : 1;
+               unsigned ch1 : 1;
+               unsigned ch0 : 1;
+       } b;
+        struct {
+               unsigned reserved : 16;
+               unsigned chint : 16;
+       } b2;
+} haintmsk_data_t;
+
+/** 
+ * Host Channel Specific Registers. <i>500h-5FCh</i>
+ */
+typedef struct dwc_otg_hc_regs 
+{
+        /** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */
+        volatile uint32_t hcchar;     
+        /** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */
+        volatile uint32_t hcsplt;     
+        /** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */
+        volatile uint32_t hcint;
+        /** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */
+        volatile uint32_t hcintmsk;
+        /** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */
+        volatile uint32_t hctsiz;
+        /** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */
+        volatile uint32_t hcdma;
+        /** Reserved.  <i>Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch</i> */
+        uint32_t reserved[2];
+} dwc_otg_hc_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+typedef union hcchar_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+               /** Channel enable */
+               unsigned chen : 1;
+               /** Channel disable */
+               unsigned chdis : 1;
+               /**
+                * Frame to transmit periodic transaction.
+                * 0: even, 1: odd
+                */
+               unsigned oddfrm : 1;
+               /** Device address */
+               unsigned devaddr : 7;
+               /** Packets per frame for periodic transfers. 0 is reserved. */
+               unsigned multicnt : 2;
+               /** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+               unsigned eptype : 2;
+               /** 0: Full/high speed device, 1: Low speed device */
+               unsigned lspddev : 1;
+               unsigned reserved : 1;
+               /** 0: OUT, 1: IN */
+               unsigned epdir : 1;
+               /** Endpoint number */
+               unsigned epnum : 4;
+               /** Maximum packet size in bytes */
+               unsigned mps : 11;
+        } b;
+} hcchar_data_t;
+
+typedef union hcsplt_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+               /** Split Enble */
+               unsigned spltena : 1;
+               /** Reserved */
+               unsigned reserved : 14;
+               /** Do Complete Split */
+               unsigned compsplt : 1;
+               /** Transaction Position */
+#define DWC_HCSPLIT_XACTPOS_MID 0
+#define DWC_HCSPLIT_XACTPOS_END 1
+#define DWC_HCSPLIT_XACTPOS_BEGIN 2
+#define DWC_HCSPLIT_XACTPOS_ALL 3
+               unsigned xactpos : 2;
+               /** Hub Address */
+               unsigned hubaddr : 7;
+               /** Port Address */
+               unsigned prtaddr : 7;
+       } b;
+} hcsplt_data_t;
+
+
+/**
+ * This union represents the bit fields in the Host All Interrupt 
+ * Register.  
+ */
+typedef union hcint_data
+{
+        /** raw register data */
+        uint32_t d32;
+        /** register bits */
+        struct {
+               /** Reserved */
+               unsigned reserved : 21;
+               /** Data Toggle Error */
+               unsigned datatglerr : 1;
+               /** Frame Overrun */
+               unsigned frmovrun : 1;
+               /** Babble Error */
+               unsigned bblerr : 1;
+               /** Transaction Err */
+               unsigned xacterr : 1;
+               /** NYET Response Received */
+               unsigned nyet : 1;
+               /** ACK Response Received */
+               unsigned ack : 1;
+               /** NAK Response Received */
+               unsigned nak : 1;
+               /** STALL Response Received */
+               unsigned stall : 1;
+               /** AHB Error */
+               unsigned ahberr : 1;
+               /** Channel Halted */
+               unsigned chhltd : 1;
+               /** Transfer Complete */
+               unsigned xfercomp : 1;
+       } b;
+} hcint_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+typedef union hctsiz_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+               /** Do PING protocol when 1 */
+               unsigned dopng : 1;
+               /**
+                * Packet ID for next data packet
+                * 0: DATA0
+                * 1: DATA2
+                * 2: DATA1
+                * 3: MDATA (non-Control), SETUP (Control)
+                */
+#define DWC_HCTSIZ_DATA0 0
+#define DWC_HCTSIZ_DATA1 2
+#define DWC_HCTSIZ_DATA2 1
+#define DWC_HCTSIZ_MDATA 3
+#define DWC_HCTSIZ_SETUP 3             
+               unsigned pid : 2;
+               /** Data packets to transfer */
+               unsigned pktcnt : 10;
+               /** Total transfer size in bytes */
+               unsigned xfersize : 19;
+        } b;
+} hctsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcintmsk register.
+ */
+typedef union hcintmsk_data
+{
+        /** raw register data */
+        uint32_t d32;
+
+        /** register bits */
+        struct {
+               unsigned reserved : 21;
+               unsigned datatglerr : 1;
+               unsigned frmovrun : 1;
+               unsigned bblerr : 1;
+               unsigned xacterr : 1;
+               unsigned nyet : 1;
+               unsigned ack : 1;
+               unsigned nak : 1;
+               unsigned stall : 1;
+               unsigned ahberr : 1;
+               unsigned chhltd : 1;
+               unsigned xfercompl : 1;
+        } b;
+} hcintmsk_data_t;
+
+/** OTG Host Interface Structure.
+ *
+ * The OTG Host Interface Structure structure contains information
+ * needed to manage the DWC_otg controller acting in host mode. It
+ * represents the programming view of the host-specific aspects of the
+ * controller.
+ */
+typedef struct dwc_otg_host_if {
+        /** Host Global Registers starting at offset 400h.*/
+        dwc_otg_host_global_regs_t *host_global_regs;
+#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400 
+
+        /** Host Port 0 Control and Status Register */
+        volatile uint32_t *hprt0;
+#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440
+        
+
+        /** Host Channel Specific Registers at offsets 500h-5FCh. */
+        dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS];
+#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500
+#define DWC_OTG_CHAN_REGS_OFFSET 0x20
+
+
+        /* Host configuration information */
+        /** Number of Host Channels (range: 1-16) */
+        uint8_t  num_host_channels;    
+        /** Periodic EPs supported (0: no, 1: yes) */
+        uint8_t  perio_eps_supported;
+        /** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
+        uint16_t perio_tx_fifo_size;   
+  
+} dwc_otg_host_if_t;
+
+#endif
-- 
1.7.9.1