update etrax usb support - thanks Hinko Kocevar

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11048 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 5302 insertions, 14 deletions

diff --git a/target/linux/etrax/config-default b/target/linux/etrax/config-default
index 6c6351d979..e4bdc3219a 100644
--- a/target/linux/etrax/config-default
+++ b/target/linux/etrax/config-default
@@ -147,7 +147,9 @@ CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN=y
 CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS=1
 # CONFIG_ETRAX_SOFT_SHUTDOWN is not set
 # CONFIG_ETRAX_SYNCHRONOUS_SERIAL is not set
-# CONFIG_ETRAX_USB_HOST is not set
+CONFIG_ETRAX_USB_HOST=y
+CONFIG_ETRAX_USB_HOST_PORT1=y
+CONFIG_ETRAX_USB_HOST_PORT2=y
 # CONFIG_ETRAX_VCS_SIM is not set
 # CONFIG_ETRAX_WATCHDOG is not set
 CONFIG_FAT_FS=y
@@ -245,8 +247,10 @@ CONFIG_SLABINFO=y
 # CONFIG_SYSTEM_PROFILER is not set
 CONFIG_SYSVIPC_SYSCTL=y
 CONFIG_UID16=y
+CONFIG_USB=y
 # CONFIG_USB_ARCH_HAS_EHCI is not set
 # CONFIG_USB_ARCH_HAS_HCD is not set
 # CONFIG_USB_ARCH_HAS_OHCI is not set
+# CONFIG_USB_R8A66597_HCD is not set
 CONFIG_VFAT_FS=y
 # CONFIG_VLAN_8021Q is not set
diff --git a/target/linux/etrax/patches/301-usb_support.patch b/target/linux/etrax/patches/301-usb_support.patch
index 3bc9f2366e..8e80eea536 100644
--- a/target/linux/etrax/patches/301-usb_support.patch
+++ b/target/linux/etrax/patches/301-usb_support.patch
@@ -1,22 +1,5306 @@
-Index: linux-2.6.25.1/drivers/usb/Makefile
-===================================================================
---- linux-2.6.25.1.orig/drivers/usb/Makefile	2008-05-03 21:33:11.000000000 +0100
-+++ linux-2.6.25.1/drivers/usb/Makefile	2008-05-03 21:33:17.000000000 +0100
+diff -x .org -x .orig -x '.c*' -x '.h*' -x .git -x .git -urN clean-2.6.25-rc8/drivers/usb/Makefile source-2.6.25-rc8/drivers/usb/Makefile
+--- clean-2.6.25-rc8/drivers/usb/Makefile	2008-04-07 10:26:24.000000000 +0200
++++ source-2.6.25-rc8/drivers/usb/Makefile	2008-04-07 10:29:40.000000000 +0200
 @@ -16,6 +16,7 @@
  obj-$(CONFIG_USB_SL811_HCD)	+= host/
  obj-$(CONFIG_USB_U132_HCD)	+= host/
  obj-$(CONFIG_USB_R8A66597_HCD)	+= host/
-+obj-$(CONFIG_ETRAX_USB_HOST)   += host/
++obj-$(CONFIG_ETRAX_USB_HOST)	+= host/
  
  obj-$(CONFIG_USB_ACM)		+= class/
  obj-$(CONFIG_USB_PRINTER)	+= class/
-Index: linux-2.6.25.1/drivers/usb/host/Makefile
-===================================================================
---- linux-2.6.25.1.orig/drivers/usb/host/Makefile	2008-05-03 21:33:24.000000000 +0100
-+++ linux-2.6.25.1/drivers/usb/host/Makefile	2008-05-03 21:33:47.000000000 +0100
-@@ -16,4 +16,4 @@
- obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o
+diff -x .org -x .orig -x '.c*' -x '.h*' -x .git -x .git -urN clean-2.6.25-rc8/drivers/usb/host/Makefile source-2.6.25-rc8/drivers/usb/host/Makefile
+--- clean-2.6.25-rc8/drivers/usb/host/Makefile	2008-04-07 10:26:24.000000000 +0200
++++ source-2.6.25-rc8/drivers/usb/host/Makefile	2008-04-07 10:29:40.000000000 +0200
+@@ -17,3 +17,5 @@
  obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o
  obj-$(CONFIG_USB_R8A66597_HCD)	+= r8a66597-hcd.o
--
-+obj-$(CONFIG_ETRAX_ARCH_V10)      += hc_crisv10.o
+ 
++#obj-$(CONFIG_USB_CARNEOL)	+= hc-crisv10.o
++obj-$(CONFIG_ETRAX_USB_HOST)	+= hc-crisv10.o
+diff -x .org -x .orig -x '.c*' -x '.h*' -x .git -x .git -urN clean-2.6.25-rc8/drivers/usb/host/hc-cris-dbg.h source-2.6.25-rc8/drivers/usb/host/hc-cris-dbg.h
+--- clean-2.6.25-rc8/drivers/usb/host/hc-cris-dbg.h	1970-01-01 01:00:00.000000000 +0100
++++ source-2.6.25-rc8/drivers/usb/host/hc-cris-dbg.h	2008-04-07 10:29:40.000000000 +0200
+@@ -0,0 +1,143 @@
++
++/* macros for debug output */
++
++#define hcd_dbg(hcd, fmt, args...) \
++	dev_info(hcd->self.controller, fmt, ## args)
++#define hcd_err(hcd, fmt, args...) \
++	dev_err(hcd->self.controller, fmt, ## args)
++#define hcd_info(hcd, fmt, args...) \
++	dev_info(hcd->self.controller, fmt, ## args)
++#define hcd_warn(hcd, fmt, args...) \
++	dev_warn(hcd->self.controller, fmt, ## args)
++
++/*
++#define devdrv_dbg(fmt, args...) \
++        printk(KERN_INFO "usb_devdrv dbg: ");printk(fmt, ## args)
++*/
++#define devdrv_dbg(fmt, args...) {}
++
++#define devdrv_err(fmt, args...) \
++        printk(KERN_ERR "usb_devdrv error: ");printk(fmt, ## args)
++#define devdrv_info(fmt, args...) \
++        printk(KERN_INFO "usb_devdrv: ");printk(fmt, ## args)
++
++#define irq_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_irq dbg: ");printk(fmt, ## args)
++#define irq_err(fmt, args...) \
++        printk(KERN_ERR "crisv10_irq error: ");printk(fmt, ## args)
++#define irq_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_irq warn: ");printk(fmt, ## args)
++#define irq_info(fmt, args...) \
++        printk(KERN_INFO "crisv10_hcd: ");printk(fmt, ## args)
++
++/*
++#define rh_dbg(fmt, args...) \
++  printk(KERN_DEBUG "crisv10_rh dbg: ");printk(fmt, ## args)
++*/
++#define rh_dbg(fmt, args...) {}
++
++#define rh_err(fmt, args...) \
++        printk(KERN_ERR "crisv10_rh error: ");printk(fmt, ## args)
++#define rh_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_rh warning: ");printk(fmt, ## args)
++#define rh_info(fmt, args...) \
++        printk(KERN_INFO "crisv10_rh: ");printk(fmt, ## args)
++
++/*
++#define tc_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_tc dbg: ");printk(fmt, ## args)
++*/
++#define tc_dbg(fmt, args...) {while(0){}}
++
++#define tc_err(fmt, args...) \
++        printk(KERN_ERR "crisv10_tc error: ");printk(fmt, ## args)
++/*
++#define tc_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_tc warning: ");printk(fmt, ## args)
++*/
++#define tc_warn(fmt, args...) {while(0){}}
++
++#define tc_info(fmt, args...) \
++        printk(KERN_INFO "crisv10_tc: ");printk(fmt, ## args)
++
++
++/* Debug print-outs for various traffic types */
++
++#define intr_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_intr warning: ");printk(fmt, ## args)
++
++#define intr_dbg(fmt, args...) \
++        printk(KERN_DEBUG "crisv10_intr dbg: ");printk(fmt, ## args)
++/*
++#define intr_dbg(fmt, args...) {while(0){}}
++*/
++
++
++#define isoc_err(fmt, args...) \
++        printk(KERN_ERR "crisv10_isoc error: ");printk(fmt, ## args)
++/*
++#define isoc_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_isoc warning: ");printk(fmt, ## args)
++*/
++#define isoc_warn(fmt, args...) {while(0){}}
++
++/*
++#define isoc_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_isoc dbg: ");printk(fmt, ## args)
++*/
++#define isoc_dbg(fmt, args...) {while(0){}}
++
++/*
++#define timer_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_timer warning: ");printk(fmt, ## args)
++*/
++#define timer_warn(fmt, args...) {while(0){}}
++
++/*
++#define timer_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_timer dbg: ");printk(fmt, ## args)
++*/
++#define timer_dbg(fmt, args...) {while(0){}}
++
++
++/* Debug printouts for events related to late finishing of URBs */
++
++#define late_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_late dbg: ");printk(fmt, ## args)
++/*
++#define late_dbg(fmt, args...) {while(0){}}
++*/
++
++#define late_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_late warning: ");printk(fmt, ## args)
++/*
++#define errno_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_errno dbg: ");printk(fmt, ## args)
++*/
++#define errno_dbg(fmt, args...) {while(0){}}
++
++
++#define dma_dbg(fmt, args...) \
++        printk(KERN_INFO "crisv10_dma dbg: ");printk(fmt, ## args)
++#define dma_err(fmt, args...) \
++        printk(KERN_ERR "crisv10_dma error: ");printk(fmt, ## args)
++#define dma_warn(fmt, args...) \
++        printk(KERN_INFO "crisv10_dma warning: ");printk(fmt, ## args)
++#define dma_info(fmt, args...) \
++        printk(KERN_INFO "crisv10_dma: ");printk(fmt, ## args)
++
++
++
++#define str_dir(pipe) \
++	(usb_pipeout(pipe) ? "out" : "in")
++#define str_type(pipe) \
++	({								\
++		char *s = "?";						\
++		switch (usb_pipetype(pipe)) {				\
++		case PIPE_ISOCHRONOUS:	s = "iso";  break;		\
++		case PIPE_INTERRUPT:	s = "intr"; break;		\
++		case PIPE_CONTROL:	s = "ctrl"; break;		\
++		case PIPE_BULK:		s = "bulk"; break;		\
++		};							\
++		s;							\
++	})
+diff -x .org -x .orig -x '.c*' -x '.h*' -x .git -x .git -urN clean-2.6.25-rc8/drivers/usb/host/hc-crisv10.c source-2.6.25-rc8/drivers/usb/host/hc-crisv10.c
+--- clean-2.6.25-rc8/drivers/usb/host/hc-crisv10.c	1970-01-01 01:00:00.000000000 +0100
++++ source-2.6.25-rc8/drivers/usb/host/hc-crisv10.c	2008-04-07 10:29:40.000000000 +0200
+@@ -0,0 +1,4800 @@
++/*
++ *
++ * ETRAX 100LX USB Host Controller Driver
++ *
++ * Copyright (C) 2005, 2006  Axis Communications AB
++ *
++ * Author: Konrad Eriksson <konrad.eriksson@axis.se>
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/moduleparam.h>
++#include <linux/spinlock.h>
++#include <linux/usb.h>
++#include <linux/platform_device.h>
++
++#include <asm/io.h>
++#include <asm/irq.h>
++#include <asm/arch/dma.h>
++#include <asm/arch/io_interface_mux.h>
++
++#include "../core/hcd.h"
++#include "../core/hub.h"
++#include "hc-crisv10.h"
++#include "hc-cris-dbg.h"
++
++
++/***************************************************************************/
++/***************************************************************************/
++/* Host Controller settings                                                */
++/***************************************************************************/
++/***************************************************************************/
++
++#define VERSION			"1.00 hinko.4"
++#define COPYRIGHT		"(c) 2005, 2006 Axis Communications AB"
++#define DESCRIPTION     "ETRAX 100LX USB Host Controller (2.6.25-rc9 port)"
++
++#define ETRAX_USB_HC_IRQ USB_HC_IRQ_NBR
++#define ETRAX_USB_RX_IRQ USB_DMA_RX_IRQ_NBR
++#define ETRAX_USB_TX_IRQ USB_DMA_TX_IRQ_NBR
++
++/* Number of physical ports in Etrax 100LX */
++#define USB_ROOT_HUB_PORTS 2
++
++const char hc_name[] = "hc-crisv10";
++const char product_desc[] = DESCRIPTION;
++
++/* The number of epids is, among other things, used for pre-allocating
++   ctrl, bulk and isoc EP descriptors (one for each epid).
++   Assumed to be > 1 when initiating the DMA lists. */
++#define NBR_OF_EPIDS       32
++
++/* Support interrupt traffic intervals up to 128 ms. */
++#define MAX_INTR_INTERVAL  128
++
++/* If periodic traffic (intr or isoc) is to be used, then one entry in the EP
++   table must be "invalid". By this we mean that we shouldn't care about epid
++   attentions for this epid, or at least handle them differently from epid
++   attentions for "valid" epids. This define determines which one to use
++   (don't change it). */
++#define INVALID_EPID       31
++/* A special epid for the bulk dummys. */
++#define DUMMY_EPID         30
++
++/* Module settings */
++
++MODULE_DESCRIPTION(DESCRIPTION);
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Konrad Eriksson <konrad.eriksson@axis.se>");
++
++
++/* Module parameters */
++
++/* 0 = No ports enabled
++   1 = Only port 1 enabled (on board ethernet on devboard)
++   2 = Only port 2 enabled (external connector on devboard)
++   3 = Both ports enabled
++*/
++static unsigned int ports = 3;
++module_param(ports, uint, S_IRUGO);
++MODULE_PARM_DESC(ports, "Bitmask indicating USB ports to use");
++
++
++/***************************************************************************/
++/***************************************************************************/
++/* Shared global variables for this module                                 */
++/***************************************************************************/
++/***************************************************************************/
++
++/* EP descriptor lists for non period transfers. Must be 32-bit aligned. */
++static volatile struct USB_EP_Desc TxBulkEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4)));
++
++static volatile struct USB_EP_Desc TxCtrlEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4)));
++
++/* EP descriptor lists for period transfers. Must be 32-bit aligned. */
++static volatile struct USB_EP_Desc TxIntrEPList[MAX_INTR_INTERVAL] __attribute__ ((aligned (4)));
++static volatile struct USB_SB_Desc TxIntrSB_zout __attribute__ ((aligned (4)));
++
++static volatile struct USB_EP_Desc TxIsocEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4)));
++static volatile struct USB_SB_Desc TxIsocSB_zout __attribute__ ((aligned (4)));
++
++//static volatile struct USB_SB_Desc TxIsocSBList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); 
++
++/* After each enabled bulk EP IN we put two disabled EP descriptors with the eol flag set,
++   causing the DMA to stop the DMA channel. The first of these two has the intr flag set, which
++   gives us a dma8_sub0_descr interrupt. When we receive this, we advance the DMA one step in the
++   EP list and then restart the bulk channel, thus forcing a switch between bulk EP descriptors
++   in each frame. */
++static volatile struct USB_EP_Desc TxBulkDummyEPList[NBR_OF_EPIDS][2] __attribute__ ((aligned (4)));
++
++/* List of URB pointers, where each points to the active URB for a epid.
++   For Bulk, Ctrl and Intr this means which URB that currently is added to
++   DMA lists (Isoc URBs are all directly added to DMA lists). As soon as
++   URB has completed is the queue examined and the first URB in queue is
++   removed and moved to the activeUrbList while its state change to STARTED and
++   its transfer(s) gets added to DMA list (exception Isoc where URBs enter
++   state STARTED directly and added transfers added to DMA lists). */
++static struct urb *activeUrbList[NBR_OF_EPIDS];
++
++/* Additional software state info for each epid */
++static struct etrax_epid epid_state[NBR_OF_EPIDS];
++
++/* Timer handles for bulk traffic timer used to avoid DMA bug where DMA stops
++   even if there is new data waiting to be processed */
++static struct timer_list bulk_start_timer = TIMER_INITIALIZER(NULL, 0, 0);
++static struct timer_list bulk_eot_timer = TIMER_INITIALIZER(NULL, 0, 0);
++
++/* We want the start timer to expire before the eot timer, because the former
++   might start traffic, thus making it unnecessary for the latter to time
++   out. */
++#define BULK_START_TIMER_INTERVAL (HZ/50) /* 20 ms */
++#define BULK_EOT_TIMER_INTERVAL (HZ/16) /* 60 ms */
++
++/* Delay before a URB completion happen when it's scheduled to be delayed */
++#define LATER_TIMER_DELAY (HZ/50) /* 20 ms */
++
++/* Simplifying macros for checking software state info of a epid */
++/* ----------------------------------------------------------------------- */
++#define epid_inuse(epid)       epid_state[epid].inuse
++#define epid_out_traffic(epid) epid_state[epid].out_traffic
++#define epid_isoc(epid)   (epid_state[epid].type == PIPE_ISOCHRONOUS ? 1 : 0)
++#define epid_intr(epid)   (epid_state[epid].type == PIPE_INTERRUPT ? 1 : 0)
++
++
++/***************************************************************************/
++/***************************************************************************/
++/* DEBUG FUNCTIONS                                                         */
++/***************************************************************************/
++/***************************************************************************/
++/* Note that these functions are always available in their "__" variants,
++   for use in error situations. The "__" missing variants are controlled by
++   the USB_DEBUG_DESC/USB_DEBUG_URB macros. */
++static void __dump_urb(struct urb* purb)
++{
++  struct crisv10_urb_priv *urb_priv = purb->hcpriv;
++  int urb_num = -1;
++  if(urb_priv) {
++    urb_num = urb_priv->urb_num;
++  }
++  printk("\nURB:0x%x[%d]\n", (unsigned int)purb, urb_num);
++  printk("dev                   :0x%08lx\n", (unsigned long)purb->dev);
++  printk("pipe                  :0x%08x\n", purb->pipe);
++  printk("status                :%d\n", purb->status);
++  printk("transfer_flags        :0x%08x\n", purb->transfer_flags);
++  printk("transfer_buffer       :0x%08lx\n", (unsigned long)purb->transfer_buffer);
++  printk("transfer_buffer_length:%d\n", purb->transfer_buffer_length);
++  printk("actual_length         :%d\n", purb->actual_length);
++  printk("setup_packet          :0x%08lx\n", (unsigned long)purb->setup_packet);
++  printk("start_frame           :%d\n", purb->start_frame);
++  printk("number_of_packets     :%d\n", purb->number_of_packets);
++  printk("interval              :%d\n", purb->interval);
++  printk("error_count           :%d\n", purb->error_count);
++  printk("context               :0x%08lx\n", (unsigned long)purb->context);
++  printk("complete              :0x%08lx\n\n", (unsigned long)purb->complete);
++}
++
++static void __dump_in_desc(volatile struct USB_IN_Desc *in)
++{
++  printk("\nUSB_IN_Desc at 0x%08lx\n", (unsigned long)in);
++  printk("  sw_len  : 0x%04x (%d)\n", in->sw_len, in->sw_len);
++  printk("  command : 0x%04x\n", in->command);
++  printk("  next    : 0x%08lx\n", in->next);
++  printk("  buf     : 0x%08lx\n", in->buf);
++  printk("  hw_len  : 0x%04x (%d)\n", in->hw_len, in->hw_len);
++  printk("  status  : 0x%04x\n\n", in->status);
++}
++
++static void __dump_sb_desc(volatile struct USB_SB_Desc *sb)
++{
++  char tt = (sb->command & 0x30) >> 4;
++  char *tt_string;
++
++  switch (tt) {
++  case 0:
++    tt_string = "zout";
++    break;
++  case 1:
++    tt_string = "in";
++    break;
++  case 2:
++    tt_string = "out";
++    break;
++  case 3:
++    tt_string = "setup";
++    break;
++  default:
++    tt_string = "unknown (weird)";
++  }
++
++  printk(" USB_SB_Desc at 0x%08lx ", (unsigned long)sb);
++  printk(" command:0x%04x (", sb->command);
++  printk("rem:%d ", (sb->command & 0x3f00) >> 8);
++  printk("full:%d ", (sb->command & 0x40) >> 6);
++  printk("tt:%d(%s) ", tt, tt_string);
++  printk("intr:%d ", (sb->command & 0x8) >> 3);
++  printk("eot:%d ", (sb->command & 0x2) >> 1);
++  printk("eol:%d)", sb->command & 0x1);
++  printk(" sw_len:0x%04x(%d)", sb->sw_len, sb->sw_len);
++  printk(" next:0x%08lx", sb->next);
++  printk(" buf:0x%08lx\n", sb->buf);
++}
++
++
++static void __dump_ep_desc(volatile struct USB_EP_Desc *ep)
++{
++  printk("USB_EP_Desc at 0x%08lx ", (unsigned long)ep);
++  printk(" command:0x%04x (", ep->command);
++  printk("ep_id:%d ", (ep->command & 0x1f00) >> 8);
++  printk("enable:%d ", (ep->command & 0x10) >> 4);
++  printk("intr:%d ", (ep->command & 0x8) >> 3);
++  printk("eof:%d ", (ep->command & 0x2) >> 1);
++  printk("eol:%d)", ep->command & 0x1);
++  printk(" hw_len:0x%04x(%d)", ep->hw_len, ep->hw_len);
++  printk(" next:0x%08lx", ep->next);
++  printk(" sub:0x%08lx\n", ep->sub);
++}
++
++static inline void __dump_ep_list(int pipe_type)
++{
++  volatile struct USB_EP_Desc *ep;
++  volatile struct USB_EP_Desc *first_ep;
++  volatile struct USB_SB_Desc *sb;
++
++  switch (pipe_type)
++    {
++    case PIPE_BULK:
++      first_ep = &TxBulkEPList[0];
++      break;
++    case PIPE_CONTROL:
++      first_ep = &TxCtrlEPList[0];
++      break;
++    case PIPE_INTERRUPT:
++      first_ep = &TxIntrEPList[0];
++      break;
++    case PIPE_ISOCHRONOUS:
++      first_ep = &TxIsocEPList[0];
++      break;
++    default:
++      warn("Cannot dump unknown traffic type");
++      return;
++    }
++  ep = first_ep;
++
++  printk("\n\nDumping EP list...\n\n");
++
++  do {
++    __dump_ep_desc(ep);
++    /* Cannot phys_to_virt on 0 as it turns into 80000000, which is != 0. */
++    sb = ep->sub ? phys_to_virt(ep->sub) : 0;
++    while (sb) {
++      __dump_sb_desc(sb);
++      sb = sb->next ? phys_to_virt(sb->next) : 0;
++    }
++    ep = (volatile struct USB_EP_Desc *)(phys_to_virt(ep->next));
++
++  } while (ep != first_ep);
++}
++
++static inline void __dump_ept_data(int epid)
++{
++  unsigned long flags;
++  __u32 r_usb_ept_data;
++
++  if (epid < 0 || epid > 31) {
++    printk("Cannot dump ept data for invalid epid %d\n", epid);
++    return;
++  }
++
++  local_irq_save(flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
++  nop();
++  r_usb_ept_data = *R_USB_EPT_DATA;
++  local_irq_restore(flags);
++
++  printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", r_usb_ept_data, epid);
++  if (r_usb_ept_data == 0) {
++    /* No need for more detailed printing. */
++    return;
++  }
++  printk("  valid           : %d\n", (r_usb_ept_data & 0x80000000) >> 31);
++  printk("  hold            : %d\n", (r_usb_ept_data & 0x40000000) >> 30);
++  printk("  error_count_in  : %d\n", (r_usb_ept_data & 0x30000000) >> 28);
++  printk("  t_in            : %d\n", (r_usb_ept_data & 0x08000000) >> 27);
++  printk("  low_speed       : %d\n", (r_usb_ept_data & 0x04000000) >> 26);
++  printk("  port            : %d\n", (r_usb_ept_data & 0x03000000) >> 24);
++  printk("  error_code      : %d\n", (r_usb_ept_data & 0x00c00000) >> 22);
++  printk("  t_out           : %d\n", (r_usb_ept_data & 0x00200000) >> 21);
++  printk("  error_count_out : %d\n", (r_usb_ept_data & 0x00180000) >> 19);
++  printk("  max_len         : %d\n", (r_usb_ept_data & 0x0003f800) >> 11);
++  printk("  ep              : %d\n", (r_usb_ept_data & 0x00000780) >> 7);
++  printk("  dev             : %d\n", (r_usb_ept_data & 0x0000003f));
++}
++
++static inline void __dump_ept_data_iso(int epid)
++{
++  unsigned long flags;
++  __u32 ept_data;
++
++  if (epid < 0 || epid > 31) {
++    printk("Cannot dump ept data for invalid epid %d\n", epid);
++    return;
++  }
++
++  local_irq_save(flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
++  nop();
++  ept_data = *R_USB_EPT_DATA_ISO;
++  local_irq_restore(flags);
++
++  printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", ept_data, epid);
++  if (ept_data == 0) {
++    /* No need for more detailed printing. */
++    return;
++  }
++  printk("  valid           : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, valid,
++						ept_data));
++  printk("  port            : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, port,
++						ept_data));
++  printk("  error_code      : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code,
++						ept_data));
++  printk("  max_len         : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, max_len,
++						ept_data));
++  printk("  ep              : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, ep,
++						ept_data));
++  printk("  dev             : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, dev,
++						ept_data));
++}
++
++static inline void __dump_ept_data_list(void)
++{
++  int i;
++
++  printk("Dumping the whole R_USB_EPT_DATA list\n");
++
++  for (i = 0; i < 32; i++) {
++    __dump_ept_data(i);
++  }
++}
++
++static void debug_epid(int epid) {
++  int i;
++  
++  if(epid_isoc(epid)) {
++    __dump_ept_data_iso(epid);
++  } else {
++    __dump_ept_data(epid);
++  }
++
++  printk("Bulk:\n");
++  for(i = 0; i < 32; i++) {
++    if(IO_EXTRACT(USB_EP_command, epid, TxBulkEPList[i].command) ==
++       epid) {
++      printk("%d: ", i); __dump_ep_desc(&(TxBulkEPList[i]));
++    }
++  }
++
++  printk("Ctrl:\n");
++  for(i = 0; i < 32; i++) {
++    if(IO_EXTRACT(USB_EP_command, epid, TxCtrlEPList[i].command) ==
++       epid) {
++      printk("%d: ", i); __dump_ep_desc(&(TxCtrlEPList[i]));
++    }
++  }
++
++  printk("Intr:\n");
++  for(i = 0; i < MAX_INTR_INTERVAL; i++) {
++    if(IO_EXTRACT(USB_EP_command, epid, TxIntrEPList[i].command) ==
++       epid) {
++      printk("%d: ", i); __dump_ep_desc(&(TxIntrEPList[i]));
++    }
++  }
++  
++  printk("Isoc:\n");
++  for(i = 0; i < 32; i++) {
++    if(IO_EXTRACT(USB_EP_command, epid, TxIsocEPList[i].command) ==
++       epid) {
++      printk("%d: ", i); __dump_ep_desc(&(TxIsocEPList[i]));
++    }
++  }
++
++  __dump_ept_data_list();
++  __dump_ep_list(PIPE_INTERRUPT);
++  printk("\n\n");
++}
++
++
++
++char* hcd_status_to_str(__u8 bUsbStatus) {
++  static char hcd_status_str[128];
++  hcd_status_str[0] = '\0';
++  if(bUsbStatus & IO_STATE(R_USB_STATUS, ourun, yes)) {
++    strcat(hcd_status_str, "ourun ");
++  }
++  if(bUsbStatus & IO_STATE(R_USB_STATUS, perror, yes)) {
++    strcat(hcd_status_str, "perror ");
++  }
++  if(bUsbStatus & IO_STATE(R_USB_STATUS, device_mode, yes)) {
++    strcat(hcd_status_str, "device_mode ");
++  }
++  if(bUsbStatus & IO_STATE(R_USB_STATUS, host_mode, yes)) {
++    strcat(hcd_status_str, "host_mode ");
++  }
++  if(bUsbStatus & IO_STATE(R_USB_STATUS, started, yes)) {
++    strcat(hcd_status_str, "started ");
++  }
++  if(bUsbStatus & IO_STATE(R_USB_STATUS, running, yes)) {
++    strcat(hcd_status_str, "running ");
++  }
++  return hcd_status_str;
++}
++
++
++char* sblist_to_str(struct USB_SB_Desc* sb_desc) {
++  static char sblist_to_str_buff[128];
++  char tmp[32], tmp2[32];
++  sblist_to_str_buff[0] = '\0';
++  while(sb_desc != NULL) {
++    switch(IO_EXTRACT(USB_SB_command, tt, sb_desc->command)) {
++    case 0: sprintf(tmp, "zout");  break;
++    case 1: sprintf(tmp, "in");    break;
++    case 2: sprintf(tmp, "out");   break;
++    case 3: sprintf(tmp, "setup"); break;
++    }
++    sprintf(tmp2, "(%s %d)", tmp, sb_desc->sw_len);
++    strcat(sblist_to_str_buff, tmp2);
++    if(sb_desc->next != 0) {
++      sb_desc = phys_to_virt(sb_desc->next);
++    } else {
++      sb_desc = NULL;
++    }
++  }
++  return sblist_to_str_buff;
++}
++
++char* port_status_to_str(__u16 wPortStatus) {
++  static char port_status_str[128];
++  port_status_str[0] = '\0';
++  if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) {
++    strcat(port_status_str, "connected ");
++  }
++  if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) {
++    strcat(port_status_str, "enabled ");
++  }
++  if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, suspended, yes)) {
++    strcat(port_status_str, "suspended ");
++  }
++  if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, reset, yes)) {
++    strcat(port_status_str, "reset ");
++  }
++  if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, speed, full)) {
++    strcat(port_status_str, "full-speed ");
++  } else {
++    strcat(port_status_str, "low-speed ");
++  }
++  return port_status_str;
++}
++
++
++char* endpoint_to_str(struct usb_endpoint_descriptor *ed) {
++  static char endpoint_to_str_buff[128];
++  char tmp[32];
++  int epnum = ed->bEndpointAddress & 0x0F;
++  int dir = ed->bEndpointAddress & 0x80;
++  int type = ed->bmAttributes & 0x03;
++  endpoint_to_str_buff[0] = '\0';
++  sprintf(endpoint_to_str_buff, "ep:%d ", epnum);
++  switch(type) {
++  case 0:
++    sprintf(tmp, " ctrl");
++    break;
++  case 1:
++    sprintf(tmp, " isoc");
++    break;
++  case 2:
++    sprintf(tmp, " bulk");
++    break;
++  case 3:
++    sprintf(tmp, " intr");
++    break;
++  }
++  strcat(endpoint_to_str_buff, tmp);
++  if(dir) {
++    sprintf(tmp, " in");
++  } else {
++    sprintf(tmp, " out");
++  }
++  strcat(endpoint_to_str_buff, tmp);
++
++  return endpoint_to_str_buff;
++}
++
++/* Debug helper functions for Transfer Controller */
++char* pipe_to_str(unsigned int pipe) {
++  static char pipe_to_str_buff[128];
++  char tmp[64];
++  sprintf(pipe_to_str_buff, "dir:%s", str_dir(pipe));
++  sprintf(tmp, " type:%s", str_type(pipe));
++  strcat(pipe_to_str_buff, tmp);
++
++  sprintf(tmp, " dev:%d", usb_pipedevice(pipe));
++  strcat(pipe_to_str_buff, tmp);
++  sprintf(tmp, " ep:%d", usb_pipeendpoint(pipe));
++  strcat(pipe_to_str_buff, tmp);
++  return pipe_to_str_buff;
++}
++
++
++#define USB_DEBUG_DESC 1
++
++#ifdef USB_DEBUG_DESC
++#define dump_in_desc(x) __dump_in_desc(x)
++#define dump_sb_desc(...) __dump_sb_desc(...)
++#define dump_ep_desc(x) __dump_ep_desc(x)
++#define dump_ept_data(x) __dump_ept_data(x)
++#else
++#define dump_in_desc(...) do {} while (0)
++#define dump_sb_desc(...) do {} while (0)
++#define dump_ep_desc(...) do {} while (0)
++#endif
++
++
++/* Uncomment this to enable massive function call trace
++   #define USB_DEBUG_TRACE */
++//#define USB_DEBUG_TRACE 1
++
++#ifdef USB_DEBUG_TRACE
++#define DBFENTER (printk(": Entering: %s\n", __FUNCTION__))
++#define DBFEXIT  (printk(": Exiting:  %s\n", __FUNCTION__))
++#else
++#define DBFENTER do {} while (0)
++#define DBFEXIT  do {} while (0)
++#endif
++
++#define CHECK_ALIGN(x) if (((__u32)(x)) & 0x00000003) \
++{panic("Alignment check (DWORD) failed at %s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__);}
++
++/* Most helpful debugging aid */
++#define ASSERT(expr) ((void) ((expr) ? 0 : (err("assert failed at: %s %d",__FUNCTION__, __LINE__))))
++
++
++/***************************************************************************/
++/***************************************************************************/
++/* Forward declarations                                                    */
++/***************************************************************************/
++/***************************************************************************/
++void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg);
++void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg);
++void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg);
++void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg);
++
++void rh_port_status_change(__u16[]);
++int  rh_clear_port_feature(__u8, __u16);
++int  rh_set_port_feature(__u8, __u16);
++static void rh_disable_port(unsigned int port);
++
++static void check_finished_bulk_tx_epids(struct usb_hcd *hcd,
++					 int timer);
++
++//static int  tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb,
++//			 int mem_flags);
++static int tc_setup_epid(struct urb *urb, int mem_flags);
++static void tc_free_epid(struct usb_host_endpoint *ep);
++static int  tc_allocate_epid(void);
++static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status);
++static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb,
++				int status);
++
++static int  urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid,
++			   int mem_flags);
++static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb);
++
++static inline struct urb *urb_list_first(int epid);
++static inline void        urb_list_add(struct urb *urb, int epid,
++				      int mem_flags);
++static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid);
++static inline void        urb_list_del(struct urb *urb, int epid);
++static inline void        urb_list_move_last(struct urb *urb, int epid);
++static inline struct urb *urb_list_next(struct urb *urb, int epid);
++
++int create_sb_for_urb(struct urb *urb, int mem_flags);
++int init_intr_urb(struct urb *urb, int mem_flags);
++
++static inline void  etrax_epid_set(__u8 index, __u32 data);
++static inline void  etrax_epid_clear_error(__u8 index);
++static inline void  etrax_epid_set_toggle(__u8 index, __u8 dirout,
++					      __u8 toggle);
++static inline __u8  etrax_epid_get_toggle(__u8 index, __u8 dirout);
++static inline __u32 etrax_epid_get(__u8 index);
++
++/* We're accessing the same register position in Etrax so
++   when we do full access the internal difference doesn't matter */
++#define etrax_epid_iso_set(index, data) etrax_epid_set(index, data)
++#define etrax_epid_iso_get(index) etrax_epid_get(index)
++
++
++//static void        tc_dma_process_isoc_urb(struct urb *urb);
++static void        tc_dma_process_queue(int epid);
++static void        tc_dma_unlink_intr_urb(struct urb *urb);
++static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc);
++static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc);
++
++static void tc_bulk_start_timer_func(unsigned long dummy);
++static void tc_bulk_eot_timer_func(unsigned long dummy);
++
++
++/*************************************************************/
++/*************************************************************/
++/* Host Controler Driver block                               */
++/*************************************************************/
++/*************************************************************/
++
++/* HCD operations */
++static irqreturn_t crisv10_hcd_top_irq(int irq, void*);
++static int crisv10_hcd_reset(struct usb_hcd *);
++static int crisv10_hcd_start(struct usb_hcd *);
++static void crisv10_hcd_stop(struct usb_hcd *);
++#ifdef CONFIG_PM
++static int crisv10_hcd_suspend(struct device *, u32, u32);
++static int crisv10_hcd_resume(struct device *, u32);
++#endif /* CONFIG_PM */
++static int crisv10_hcd_get_frame(struct usb_hcd *);
++
++//static int  tc_urb_enqueue(struct usb_hcd *, struct usb_host_endpoint *ep, struct urb *, gfp_t mem_flags);
++static int tc_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
++//static int  tc_urb_dequeue(struct usb_hcd *, struct urb *);
++static int tc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
++static void tc_endpoint_disable(struct usb_hcd *, struct usb_host_endpoint *ep);
++
++static int rh_status_data_request(struct usb_hcd *, char *);
++static int rh_control_request(struct usb_hcd *, u16, u16, u16, char*, u16);
++
++#ifdef CONFIG_PM
++static int crisv10_hcd_hub_suspend(struct usb_hcd *);
++static int crisv10_hcd_hub_resume(struct usb_hcd *);
++#endif /* CONFIG_PM */
++#ifdef CONFIG_USB_OTG
++static int crisv10_hcd_start_port_reset(struct usb_hcd *, unsigned);
++#endif /* CONFIG_USB_OTG */
++
++/* host controller driver interface */
++static const struct hc_driver crisv10_hc_driver = 
++  {
++    .description =	hc_name,
++    .product_desc =	product_desc,
++    .hcd_priv_size =	sizeof(struct crisv10_hcd),
++
++    /* Attaching IRQ handler manualy in probe() */
++    /* .irq =		crisv10_hcd_irq, */
++
++    .flags =		HCD_USB11,
++
++    /* called to init HCD and root hub */
++    .reset =		crisv10_hcd_reset,
++    .start =		crisv10_hcd_start,	
++
++    /* cleanly make HCD stop writing memory and doing I/O */
++    .stop =		crisv10_hcd_stop,
++
++    /* return current frame number */
++    .get_frame_number =	crisv10_hcd_get_frame,
++
++
++    /* Manage i/o requests via the Transfer Controller */
++    .urb_enqueue =	tc_urb_enqueue,
++    .urb_dequeue =	tc_urb_dequeue,
++
++    /* hw synch, freeing endpoint resources that urb_dequeue can't */
++    .endpoint_disable = tc_endpoint_disable,
++
++
++    /* Root Hub support */
++    .hub_status_data =	rh_status_data_request,
++    .hub_control =	rh_control_request,
++#ifdef CONFIG_PM
++    .hub_suspend =	rh_suspend_request,
++    .hub_resume =	rh_resume_request,
++#endif /* CONFIG_PM */
++#ifdef	CONFIG_USB_OTG
++    .start_port_reset =	crisv10_hcd_start_port_reset,
++#endif /* CONFIG_USB_OTG */
++  };
++
++
++/*
++ * conversion between pointers to a hcd and the corresponding
++ * crisv10_hcd 
++ */
++
++static inline struct crisv10_hcd *hcd_to_crisv10_hcd(struct usb_hcd *hcd)
++{
++	return (struct crisv10_hcd *) hcd->hcd_priv;
++}
++
++static inline struct usb_hcd *crisv10_hcd_to_hcd(struct crisv10_hcd *hcd)
++{
++	return container_of((void *) hcd, struct usb_hcd, hcd_priv);
++}
++
++/* check if specified port is in use */
++static inline int port_in_use(unsigned int port)
++{
++	return ports & (1 << port);
++}
++
++/* number of ports in use */
++static inline unsigned int num_ports(void)
++{
++	unsigned int i, num = 0;
++	for (i = 0; i < USB_ROOT_HUB_PORTS; i++)
++		if (port_in_use(i))
++			num++;
++	return num;
++}
++
++/* map hub port number to the port number used internally by the HC */
++static inline unsigned int map_port(unsigned int port)
++{
++  unsigned int i, num = 0;
++  for (i = 0; i < USB_ROOT_HUB_PORTS; i++)
++    if (port_in_use(i))
++      if (++num == port)
++	return i;
++  return -1;
++}
++
++/* size of descriptors in slab cache */
++#ifndef MAX
++#define MAX(x, y)		((x) > (y) ? (x) : (y))
++#endif
++
++
++/******************************************************************/
++/* Hardware Interrupt functions                                   */
++/******************************************************************/
++
++/* Fast interrupt handler for HC */
++static irqreturn_t crisv10_hcd_top_irq(int irq, void *vcd)
++{
++  struct usb_hcd *hcd = vcd;
++  struct crisv10_irq_reg reg;
++  __u32 irq_mask;
++  unsigned long flags;
++
++  DBFENTER;
++
++  ASSERT(hcd != NULL);
++  reg.hcd = hcd;
++
++  /* Turn of other interrupts while handling these sensitive cases */
++  local_irq_save(flags);
++  
++  /* Read out which interrupts that are flaged */
++  irq_mask = *R_USB_IRQ_MASK_READ;
++  reg.r_usb_irq_mask_read = irq_mask;
++
++  /* Reading R_USB_STATUS clears the ctl_status interrupt. Note that
++     R_USB_STATUS must be read before R_USB_EPID_ATTN since reading the latter
++     clears the ourun and perror fields of R_USB_STATUS. */
++  reg.r_usb_status = *R_USB_STATUS;
++  
++  /* Reading R_USB_EPID_ATTN clears the iso_eof, bulk_eot and epid_attn
++     interrupts. */
++  reg.r_usb_epid_attn = *R_USB_EPID_ATTN;
++  
++  /* Reading R_USB_RH_PORT_STATUS_1 and R_USB_RH_PORT_STATUS_2 clears the
++     port_status interrupt. */
++  reg.r_usb_rh_port_status_1 = *R_USB_RH_PORT_STATUS_1;
++  reg.r_usb_rh_port_status_2 = *R_USB_RH_PORT_STATUS_2;
++  
++  /* Reading R_USB_FM_NUMBER clears the sof interrupt. */
++  /* Note: the lower 11 bits contain the actual frame number, sent with each
++     sof. */
++  reg.r_usb_fm_number = *R_USB_FM_NUMBER;
++
++  /* Interrupts are handled in order of priority. */
++  if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, port_status)) {
++    crisv10_hcd_port_status_irq(&reg);
++  }
++  if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, epid_attn)) {
++    crisv10_hcd_epid_attn_irq(&reg);
++  }
++  if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, ctl_status)) {
++    crisv10_hcd_ctl_status_irq(&reg);
++  }
++  if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, iso_eof)) {
++    crisv10_hcd_isoc_eof_irq(&reg);
++  }
++  if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, bulk_eot)) {
++    /* Update/restart the bulk start timer since obviously the channel is
++       running. */
++    mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL);
++    /* Update/restart the bulk eot timer since we just received an bulk eot
++       interrupt. */
++    mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL);
++
++    /* Check for finished bulk transfers on epids */
++    check_finished_bulk_tx_epids(hcd, 0);
++  }
++  local_irq_restore(flags);
++
++  DBFEXIT;
++  return IRQ_HANDLED;
++}
++
++
++void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg) {
++  struct usb_hcd *hcd = reg->hcd;
++  struct crisv10_urb_priv *urb_priv;
++  int epid;
++  DBFENTER;
++
++  for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
++    if (test_bit(epid, (void *)&reg->r_usb_epid_attn)) {
++      struct urb *urb;
++      __u32 ept_data;
++      int error_code;
++
++      if (epid == DUMMY_EPID || epid == INVALID_EPID) {
++	/* We definitely don't care about these ones. Besides, they are
++	   always disabled, so any possible disabling caused by the
++	   epid attention interrupt is irrelevant. */
++	warn("Got epid_attn for INVALID_EPID or DUMMY_EPID (%d).", epid);
++	continue;
++      }
++
++      if(!epid_inuse(epid)) {
++	irq_err("Epid attention on epid:%d that isn't in use\n", epid);
++	printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status);
++	debug_epid(epid);
++	continue;
++      }
++
++      /* Note that although there are separate R_USB_EPT_DATA and
++	 R_USB_EPT_DATA_ISO registers, they are located at the same address and
++	 are of the same size. In other words, this read should be ok for isoc
++	 also. */
++      ept_data = etrax_epid_get(epid);
++      error_code = IO_EXTRACT(R_USB_EPT_DATA, error_code, ept_data);
++
++      /* Get the active URB for this epid. We blatantly assume
++	 that only this URB could have caused the epid attention. */
++      urb = activeUrbList[epid];
++      if (urb == NULL) {
++	irq_err("Attention on epid:%d error:%d with no active URB.\n",
++		epid, error_code);
++	printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status);
++	debug_epid(epid);
++	continue;
++      }
++
++      urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++      ASSERT(urb_priv);
++
++      /* Using IO_STATE_VALUE on R_USB_EPT_DATA should be ok for isoc also. */
++      if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) {
++
++	/* Isoc traffic doesn't have error_count_in/error_count_out. */
++	if ((usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) &&
++	    (IO_EXTRACT(R_USB_EPT_DATA, error_count_in, ept_data) == 3 ||
++	     IO_EXTRACT(R_USB_EPT_DATA, error_count_out, ept_data) == 3)) {
++	  /* Check if URB allready is marked for late-finish, we can get
++	     several 3rd error for Intr traffic when a device is unplugged */
++	  if(urb_priv->later_data == NULL) {
++	    /* 3rd error. */
++	    irq_warn("3rd error for epid:%d (%s %s) URB:0x%x[%d]\n", epid,
++		     str_dir(urb->pipe), str_type(urb->pipe),
++		     (unsigned int)urb, urb_priv->urb_num);
++	  
++	    tc_finish_urb_later(hcd, urb, -EPROTO);
++	  }
++
++	} else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) {
++	  irq_warn("Perror for epid:%d\n", epid);
++	  printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff);
++	  printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status);
++	  __dump_urb(urb);
++	  debug_epid(epid);
++
++	  if (!(ept_data & IO_MASK(R_USB_EPT_DATA, valid))) {
++	    /* invalid ep_id */
++	    panic("Perror because of invalid epid."
++		  " Deconfigured too early?");
++	  } else {
++	    /* past eof1, near eof, zout transfer, setup transfer */
++	    /* Dump the urb and the relevant EP descriptor. */
++	    panic("Something wrong with DMA descriptor contents."
++		  " Too much traffic inserted?");
++	  }
++	} else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) {
++	  /* buffer ourun */
++	  printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff);
++	  printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status);
++	  __dump_urb(urb);
++	  debug_epid(epid);
++
++	  panic("Buffer overrun/underrun for epid:%d. DMA too busy?", epid);
++	} else {
++	  irq_warn("Attention on epid:%d (%s %s) with no error code\n", epid,
++		   str_dir(urb->pipe), str_type(urb->pipe));
++	  printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status);
++	  __dump_urb(urb);
++	  debug_epid(epid);
++	}
++
++      } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code,
++					      stall)) {
++	/* Not really a protocol error, just says that the endpoint gave
++	   a stall response. Note that error_code cannot be stall for isoc. */
++	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++	  panic("Isoc traffic cannot stall");
++	}
++
++	tc_dbg("Stall for epid:%d (%s %s) URB:0x%x\n", epid,
++	       str_dir(urb->pipe), str_type(urb->pipe), (unsigned int)urb);
++	tc_finish_urb(hcd, urb, -EPIPE);
++
++      } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code,
++					      bus_error)) {
++	/* Two devices responded to a transaction request. Must be resolved
++	   by software. FIXME: Reset ports? */
++	panic("Bus error for epid %d."
++	      " Two devices responded to transaction request\n",
++	      epid);
++
++      } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code,
++					      buffer_error)) {
++	/* DMA overrun or underrun. */
++	irq_warn("Buffer overrun/underrun for epid:%d (%s %s)\n", epid,
++		 str_dir(urb->pipe), str_type(urb->pipe));
++
++	/* It seems that error_code = buffer_error in
++	   R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS
++	   are the same error. */
++	tc_finish_urb(hcd, urb, -EPROTO);
++      } else {
++	  irq_warn("Unknown attention on epid:%d (%s %s)\n", epid,
++		   str_dir(urb->pipe), str_type(urb->pipe));
++	  dump_ept_data(epid);
++      }
++    }
++  }
++  DBFEXIT;
++}
++
++void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg)
++{
++  __u16 port_reg[USB_ROOT_HUB_PORTS];
++  DBFENTER;
++  port_reg[0] = reg->r_usb_rh_port_status_1;
++  port_reg[1] = reg->r_usb_rh_port_status_2;
++  rh_port_status_change(port_reg);
++  DBFEXIT;
++}
++
++void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg)
++{
++  int epid;
++  struct urb *urb;
++  struct crisv10_urb_priv *urb_priv;
++
++  DBFENTER;
++
++  for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) {
++
++    /* Only check epids that are in use, is valid and has SB list */
++    if (!epid_inuse(epid) || epid == INVALID_EPID ||
++	TxIsocEPList[epid].sub == 0 || epid == DUMMY_EPID) {
++      /* Nothing here to see. */
++      continue;
++    }
++    ASSERT(epid_isoc(epid));
++
++    /* Get the active URB for this epid (if any). */
++    urb = activeUrbList[epid];
++    if (urb == 0) {
++      isoc_warn("Ignoring NULL urb for epid:%d\n", epid);
++      continue;
++    }
++    if(!epid_out_traffic(epid)) {
++      /* Sanity check. */
++      ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS);
++
++      urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++      ASSERT(urb_priv);
++
++      if (urb_priv->urb_state == NOT_STARTED) {
++	/* If ASAP is not set and urb->start_frame is the current frame,
++	   start the transfer. */
++	if (!(urb->transfer_flags & URB_ISO_ASAP) &&
++	    (urb->start_frame == (*R_USB_FM_NUMBER & 0x7ff))) {
++	  /* EP should not be enabled if we're waiting for start_frame */
++	  ASSERT((TxIsocEPList[epid].command &
++		  IO_STATE(USB_EP_command, enable, yes)) == 0);
++
++	  isoc_warn("Enabling isoc IN EP descr for epid %d\n", epid);
++	  TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
++
++	  /* This urb is now active. */
++	  urb_priv->urb_state = STARTED;
++	  continue;
++	}
++      }
++    }
++  }
++
++  DBFEXIT;
++}
++
++void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg)
++{
++  struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(reg->hcd);
++
++  DBFENTER;
++  ASSERT(crisv10_hcd);
++
++  irq_dbg("ctr_status_irq, controller status: %s\n",
++	  hcd_status_to_str(reg->r_usb_status));
++  
++  /* FIXME: What should we do if we get ourun or perror? Dump the EP and SB
++     list for the corresponding epid? */
++  if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) {
++    panic("USB controller got ourun.");
++  }
++  if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) {
++    
++    /* Before, etrax_usb_do_intr_recover was called on this epid if it was
++       an interrupt pipe. I don't see how re-enabling all EP descriptors
++       will help if there was a programming error. */
++    panic("USB controller got perror.");
++  }
++
++  /* Keep track of USB Controller, if it's running or not */
++  if(reg->r_usb_status & IO_STATE(R_USB_STATUS, running, yes)) {
++    crisv10_hcd->running = 1;
++  } else {
++    crisv10_hcd->running = 0;
++  }
++  
++  if (reg->r_usb_status & IO_MASK(R_USB_STATUS, device_mode)) {
++    /* We should never operate in device mode. */
++    panic("USB controller in device mode.");
++  }
++
++  /* Set the flag to avoid getting "Unlink after no-IRQ? Controller is probably
++     using the wrong IRQ" from hcd_unlink_urb() in drivers/usb/core/hcd.c */
++  set_bit(HCD_FLAG_SAW_IRQ, &reg->hcd->flags);
++  
++  DBFEXIT;
++}
++
++
++/******************************************************************/
++/* Host Controller interface functions                            */
++/******************************************************************/
++
++static inline void crisv10_ready_wait(void) {
++  volatile int timeout = 10000;
++  /* Check the busy bit of USB controller in Etrax */
++  while((*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)) &&
++	(timeout-- > 0));
++  if(timeout == 0) {
++    warn("Timeout while waiting for USB controller to be idle\n");
++  }
++}
++
++/* reset host controller */
++static int crisv10_hcd_reset(struct usb_hcd *hcd)
++{
++  DBFENTER;
++  hcd_dbg(hcd, "reset\n");
++
++
++  /* Reset the USB interface. */
++  /*
++  *R_USB_COMMAND =
++    IO_STATE(R_USB_COMMAND, port_sel, nop) |
++    IO_STATE(R_USB_COMMAND, port_cmd, reset) |
++    IO_STATE(R_USB_COMMAND, ctrl_cmd, reset);
++  nop();
++  */
++  DBFEXIT;
++  return 0;
++}
++
++/* start host controller */
++static int crisv10_hcd_start(struct usb_hcd *hcd)
++{
++  DBFENTER;
++  hcd_dbg(hcd, "start\n");
++
++  crisv10_ready_wait();
++
++  /* Start processing of USB traffic. */
++  *R_USB_COMMAND =
++    IO_STATE(R_USB_COMMAND, port_sel, nop) |
++    IO_STATE(R_USB_COMMAND, port_cmd, reset) |
++    IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run);
++
++  nop();
++
++  hcd->state = HC_STATE_RUNNING;
++
++  DBFEXIT;
++  return 0;
++}
++
++/* stop host controller */
++static void crisv10_hcd_stop(struct usb_hcd *hcd)
++{
++  DBFENTER;
++  hcd_dbg(hcd, "stop\n");
++  crisv10_hcd_reset(hcd);
++  DBFEXIT;
++}
++
++/* return the current frame number */
++static int crisv10_hcd_get_frame(struct usb_hcd *hcd)
++{
++  DBFENTER;
++  DBFEXIT;
++  return (*R_USB_FM_NUMBER & 0x7ff);
++}
++
++#ifdef	CONFIG_USB_OTG
++
++static int crisv10_hcd_start_port_reset(struct usb_hcd *hcd, unsigned port)
++{
++  return 0; /* no-op for now */
++}
++
++#endif /* CONFIG_USB_OTG */
++
++
++/******************************************************************/
++/* Root Hub functions                                             */
++/******************************************************************/
++
++/* root hub status */
++static const struct usb_hub_status rh_hub_status = 
++  {
++    .wHubStatus =		0,
++    .wHubChange =		0,
++  };
++
++/* root hub descriptor */
++static const u8 rh_hub_descr[] =
++  {
++    0x09,			/* bDescLength	       */
++    0x29,			/* bDescriptorType     */
++    USB_ROOT_HUB_PORTS,         /* bNbrPorts	       */
++    0x00,			/* wHubCharacteristics */
++    0x00,		 
++    0x01,			/* bPwrOn2pwrGood      */
++    0x00,			/* bHubContrCurrent    */
++    0x00,			/* DeviceRemovable     */
++    0xff			/* PortPwrCtrlMask     */
++  };
++
++/* Actual holder of root hub status*/
++struct crisv10_rh rh;
++
++/* Initialize root hub data structures (called from dvdrv_hcd_probe()) */
++int rh_init(void) {
++  int i;
++  /* Reset port status flags */
++  for (i = 0; i < USB_ROOT_HUB_PORTS; i++) {
++    rh.wPortChange[i] = 0;
++    rh.wPortStatusPrev[i] = 0;
++  }
++  return 0;
++}
++
++#define RH_FEAT_MASK ((1<<USB_PORT_FEAT_CONNECTION)|\
++		      (1<<USB_PORT_FEAT_ENABLE)|\
++		      (1<<USB_PORT_FEAT_SUSPEND)|\
++		      (1<<USB_PORT_FEAT_RESET))
++
++/* Handle port status change interrupt (called from bottom part interrupt) */
++void rh_port_status_change(__u16 port_reg[]) {
++  int i;
++  __u16 wChange;
++
++  for(i = 0; i < USB_ROOT_HUB_PORTS; i++) {
++    /* Xor out changes since last read, masked for important flags */
++    wChange = (port_reg[i] & RH_FEAT_MASK) ^ rh.wPortStatusPrev[i];
++    /* Or changes together with (if any) saved changes */
++    rh.wPortChange[i] |= wChange;
++    /* Save new status */
++    rh.wPortStatusPrev[i] = port_reg[i];
++
++    if(wChange) {
++      rh_dbg("Interrupt port_status change port%d: %s  Current-status:%s\n", i+1,
++	     port_status_to_str(wChange),
++	     port_status_to_str(port_reg[i]));
++    }
++  }
++}
++
++/* Construct port status change bitmap for the root hub */
++static int rh_status_data_request(struct usb_hcd *hcd, char *buf)
++{
++  struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd);
++  unsigned int i;
++
++//  DBFENTER;
++  
++  /*
++   * corresponds to hub status change EP (USB 2.0 spec section 11.13.4)
++   * return bitmap indicating ports with status change
++   */
++  *buf = 0;
++  spin_lock(&crisv10_hcd->lock);
++  for (i = 1; i <= crisv10_hcd->num_ports; i++) {
++    if (rh.wPortChange[map_port(i)]) {
++      *buf |= (1 << i);
++      rh_dbg("rh_status_data_request, change on port %d: %s  Current Status: %s\n", i,
++	     port_status_to_str(rh.wPortChange[map_port(i)]),
++	     port_status_to_str(rh.wPortStatusPrev[map_port(i)]));
++    }
++  }
++  spin_unlock(&crisv10_hcd->lock);
++
++// DBFEXIT;
++
++  return *buf == 0 ? 0 : 1;
++}
++
++/* Handle a control request for the root hub (called from hcd_driver) */
++static int rh_control_request(struct usb_hcd *hcd, 
++			      u16 typeReq, 
++			      u16 wValue, 
++			      u16 wIndex,
++			      char *buf, 
++			      u16 wLength) {
++
++  struct crisv10_hcd *crisv10_hcd = hcd_to_crisv10_hcd(hcd);
++  int retval = 0;
++  int len;
++  DBFENTER;
++
++  switch (typeReq) {
++  case GetHubDescriptor:
++    rh_dbg("GetHubDescriptor\n");
++    len = min_t(unsigned int, sizeof rh_hub_descr, wLength);
++    memcpy(buf, rh_hub_descr, len);
++    buf[2] = crisv10_hcd->num_ports;
++    break;
++  case GetHubStatus:
++    rh_dbg("GetHubStatus\n");
++    len = min_t(unsigned int, sizeof rh_hub_status, wLength);
++    memcpy(buf, &rh_hub_status, len);
++    break;
++  case GetPortStatus:
++    if (!wIndex || wIndex > crisv10_hcd->num_ports)
++      goto error;
++    rh_dbg("GetportStatus, port:%d change:%s  status:%s\n", wIndex,
++	   port_status_to_str(rh.wPortChange[map_port(wIndex)]),
++	   port_status_to_str(rh.wPortStatusPrev[map_port(wIndex)]));
++    *(u16 *) buf = cpu_to_le16(rh.wPortStatusPrev[map_port(wIndex)]);
++    *(u16 *) (buf + 2) = cpu_to_le16(rh.wPortChange[map_port(wIndex)]);
++    break;
++  case SetHubFeature:
++    rh_dbg("SetHubFeature\n");
++  case ClearHubFeature:
++    rh_dbg("ClearHubFeature\n");
++    switch (wValue) {
++    case C_HUB_OVER_CURRENT:
++    case C_HUB_LOCAL_POWER:
++      rh_warn("Not implemented hub request:%d \n", typeReq);
++      /* not implemented */
++      break;
++    default:
++      goto error;
++    }
++    break;
++  case SetPortFeature:
++    if (!wIndex || wIndex > crisv10_hcd->num_ports)
++      goto error;
++    if(rh_set_port_feature(map_port(wIndex), wValue))
++      goto error;
++    break;
++  case ClearPortFeature:
++    if (!wIndex || wIndex > crisv10_hcd->num_ports)
++      goto error;
++    if(rh_clear_port_feature(map_port(wIndex), wValue))
++      goto error;
++    break;
++  default:
++    rh_warn("Unknown hub request: %d\n", typeReq);
++  error:
++    retval = -EPIPE;
++  }
++  DBFEXIT;
++  return retval;
++}
++
++int rh_set_port_feature(__u8 bPort, __u16 wFeature) {
++  __u8 bUsbCommand = 0;
++  switch(wFeature) {
++  case USB_PORT_FEAT_RESET:
++    rh_dbg("SetPortFeature: reset\n");
++    bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, reset);
++    goto set;
++    break;
++  case USB_PORT_FEAT_SUSPEND:
++    rh_dbg("SetPortFeature: suspend\n");
++    bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, suspend);
++    goto set;
++    break;
++  case USB_PORT_FEAT_POWER:
++    rh_dbg("SetPortFeature: power\n");
++    break;
++  case USB_PORT_FEAT_C_CONNECTION:
++    rh_dbg("SetPortFeature: c_connection\n");
++    break;
++  case USB_PORT_FEAT_C_RESET:
++    rh_dbg("SetPortFeature: c_reset\n");
++    break;
++  case USB_PORT_FEAT_C_OVER_CURRENT:
++    rh_dbg("SetPortFeature: c_over_current\n");
++    break;
++
++  set:
++    /* Select which port via the port_sel field */
++    bUsbCommand |= IO_FIELD(R_USB_COMMAND, port_sel, bPort+1);
++
++    /* Make sure the controller isn't busy. */
++    crisv10_ready_wait();
++    /* Send out the actual command to the USB controller */
++    *R_USB_COMMAND = bUsbCommand;
++
++    /* If port reset then also bring USB controller into running state */
++    if(wFeature == USB_PORT_FEAT_RESET) {
++      /* Wait a while for controller to first become started after port reset */
++      udelay(12000); /* 12ms blocking wait */
++      
++      /* Make sure the controller isn't busy. */
++      crisv10_ready_wait();
++
++      /* If all enabled ports were disabled the host controller goes down into
++	 started mode, so we need to bring it back into the running state.
++	 (This is safe even if it's already in the running state.) */
++      *R_USB_COMMAND =
++	IO_STATE(R_USB_COMMAND, port_sel, nop) |
++	IO_STATE(R_USB_COMMAND, port_cmd, reset) |
++	IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run);
++    }
++
++    break;
++  default:
++    rh_dbg("SetPortFeature: unknown feature\n");
++    return -1;
++  }
++  return 0;
++}
++
++int rh_clear_port_feature(__u8 bPort, __u16 wFeature) {
++  switch(wFeature) {
++  case USB_PORT_FEAT_ENABLE:
++    rh_dbg("ClearPortFeature: enable\n");
++    rh_disable_port(bPort);
++    break;
++  case USB_PORT_FEAT_SUSPEND:
++    rh_dbg("ClearPortFeature: suspend\n");
++    break;
++  case USB_PORT_FEAT_POWER:
++    rh_dbg("ClearPortFeature: power\n");
++    break;
++
++  case USB_PORT_FEAT_C_ENABLE:
++    rh_dbg("ClearPortFeature: c_enable\n");
++    goto clear;
++  case USB_PORT_FEAT_C_SUSPEND:
++    rh_dbg("ClearPortFeature: c_suspend\n");
++    goto clear;
++  case USB_PORT_FEAT_C_CONNECTION:
++    rh_dbg("ClearPortFeature: c_connection\n");
++    goto clear;
++  case USB_PORT_FEAT_C_OVER_CURRENT:
++    rh_dbg("ClearPortFeature: c_over_current\n");
++    goto clear;
++  case USB_PORT_FEAT_C_RESET:
++    rh_dbg("ClearPortFeature: c_reset\n");
++    goto clear;
++  clear:
++    rh.wPortChange[bPort] &= ~(1 << (wFeature - 16));
++    break;
++  default:
++    rh_dbg("ClearPortFeature: unknown feature\n");
++    return -1;
++  }
++  return 0;
++}
++
++
++#ifdef	CONFIG_PM
++/* Handle a suspend request for the root hub (called from hcd_driver) */
++static int rh_suspend_request(struct usb_hcd *hcd)
++{
++  return 0; /* no-op for now */
++}
++
++/* Handle a resume request for the root hub (called from hcd_driver) */
++static int rh_resume_request(struct usb_hcd *hcd)
++{
++  return 0; /* no-op for now */
++}
++#endif /* CONFIG_PM */
++
++
++
++/* Wrapper function for workaround port disable registers in USB controller  */
++static void rh_disable_port(unsigned int port) {
++  volatile int timeout = 10000;
++  volatile char* usb_portx_disable;
++  switch(port) {
++  case 0:
++    usb_portx_disable = R_USB_PORT1_DISABLE;
++    break;
++  case 1:
++    usb_portx_disable = R_USB_PORT2_DISABLE;
++    break;
++  default:
++    /* Invalid port index */
++    return;
++  }
++  /* Set disable flag in special register  */
++  *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, yes);
++  /* Wait until not enabled anymore */
++  while((rh.wPortStatusPrev[port] &
++	IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) &&
++	(timeout-- > 0));
++  if(timeout == 0) {
++    warn("Timeout while waiting for port %d to become disabled\n", port);
++  }
++  /* clear disable flag in special register  */
++  *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, no);
++  rh_info("Physical port %d disabled\n", port+1);
++}
++
++
++/******************************************************************/
++/* Transfer Controller (TC) functions                             */
++/******************************************************************/
++
++/* FIXME: Should RX_BUF_SIZE be a config option, or maybe we should adjust it
++   dynamically?
++   To adjust it dynamically we would have to get an interrupt when we reach
++   the end of the rx descriptor list, or when we get close to the end, and
++   then allocate more descriptors. */
++#define NBR_OF_RX_DESC     512
++#define RX_DESC_BUF_SIZE   1024
++#define RX_BUF_SIZE        (NBR_OF_RX_DESC * RX_DESC_BUF_SIZE)
++
++
++/* Local variables for Transfer Controller */
++/* --------------------------------------- */
++
++/* This is a circular (double-linked) list of the active urbs for each epid.
++   The head is never removed, and new urbs are linked onto the list as
++   urb_entry_t elements. Don't reference urb_list directly; use the wrapper
++   functions instead (which includes spin_locks) */
++static struct list_head urb_list[NBR_OF_EPIDS];
++
++/* Read about the need and usage of this lock in submit_ctrl_urb. */
++/* Lock for URB lists for each EPID */
++static spinlock_t urb_list_lock;
++
++/* Lock for EPID array register (R_USB_EPT_x) in Etrax */
++static spinlock_t etrax_epid_lock;
++
++/* Lock for dma8 sub0 handling */
++static spinlock_t etrax_dma8_sub0_lock;
++
++/* DMA IN cache bug. Align the DMA IN buffers to 32 bytes, i.e. a cache line.
++   Since RX_DESC_BUF_SIZE is 1024 is a multiple of 32, all rx buffers will be
++   cache aligned. */
++static volatile unsigned char RxBuf[RX_BUF_SIZE] __attribute__ ((aligned (32)));
++static volatile struct USB_IN_Desc RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned (4)));
++
++/* Pointers into RxDescList. */
++static volatile struct USB_IN_Desc *myNextRxDesc;
++static volatile struct USB_IN_Desc *myLastRxDesc;
++
++/* A zout transfer makes a memory access at the address of its buf pointer,
++   which means that setting this buf pointer to 0 will cause an access to the
++   flash. In addition to this, setting sw_len to 0 results in a 16/32 bytes
++   (depending on DMA burst size) transfer.
++   Instead, we set it to 1, and point it to this buffer. */
++static int zout_buffer[4] __attribute__ ((aligned (4)));
++
++/* Cache for allocating new EP and SB descriptors. */
++//static kmem_cache_t *usb_desc_cache;
++static struct kmem_cache *usb_desc_cache;
++
++/* Cache for the data allocated in the isoc descr top half. */
++//static kmem_cache_t *isoc_compl_cache;
++static struct kmem_cache *isoc_compl_cache;
++
++/* Cache for the data allocated when delayed finishing of URBs */
++//static kmem_cache_t *later_data_cache;
++static struct kmem_cache *later_data_cache;
++
++/* Counter to keep track of how many Isoc EP we have sat up. Used to enable
++   and disable iso_eof interrupt. We only need these interrupts when we have
++   Isoc data endpoints (consumes CPU cycles).
++   FIXME: This could be more fine granular, so this interrupt is only enabled
++   when we have a In Isoc URB not URB_ISO_ASAP flaged queued. */
++static int isoc_epid_counter;
++
++/* Protecting wrapper functions for R_USB_EPT_x */
++/* -------------------------------------------- */
++static inline void etrax_epid_set(__u8 index, __u32 data) {
++  unsigned long flags;
++  spin_lock_irqsave(&etrax_epid_lock, flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index);
++  nop();
++  *R_USB_EPT_DATA = data;
++  spin_unlock_irqrestore(&etrax_epid_lock, flags);
++}
++
++static inline void etrax_epid_clear_error(__u8 index) {
++  unsigned long flags;
++  spin_lock_irqsave(&etrax_epid_lock, flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index);
++  nop();
++  *R_USB_EPT_DATA &=
++    ~(IO_MASK(R_USB_EPT_DATA, error_count_in) |
++      IO_MASK(R_USB_EPT_DATA, error_count_out) |
++      IO_MASK(R_USB_EPT_DATA, error_code));
++  spin_unlock_irqrestore(&etrax_epid_lock, flags);
++}
++
++static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout,
++                                             __u8 toggle) {
++  unsigned long flags;
++  spin_lock_irqsave(&etrax_epid_lock, flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index);
++  nop();
++  if(dirout) {
++    *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_out);
++    *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_out, toggle);
++  } else {
++    *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_in);
++    *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_in, toggle);
++  }
++  spin_unlock_irqrestore(&etrax_epid_lock, flags);
++}
++
++static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout) {
++  unsigned long flags;
++  __u8 toggle;
++  spin_lock_irqsave(&etrax_epid_lock, flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index);
++  nop();
++  if (dirout) {
++    toggle = IO_EXTRACT(R_USB_EPT_DATA, t_out, *R_USB_EPT_DATA);
++  } else {
++    toggle = IO_EXTRACT(R_USB_EPT_DATA, t_in, *R_USB_EPT_DATA);
++  }
++  spin_unlock_irqrestore(&etrax_epid_lock, flags);
++  return toggle;
++}
++
++
++static inline __u32 etrax_epid_get(__u8 index) {
++  unsigned long flags;
++  __u32 data;
++  spin_lock_irqsave(&etrax_epid_lock, flags);
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index);
++  nop();
++  data = *R_USB_EPT_DATA;
++  spin_unlock_irqrestore(&etrax_epid_lock, flags);
++  return data;
++}
++
++
++
++
++/* Main functions for Transfer Controller */
++/* -------------------------------------- */
++
++/* Init structs, memories and lists used by Transfer Controller */
++int tc_init(struct usb_hcd *hcd) {
++  int i;
++  /* Clear software state info for all epids */
++  memset(epid_state, 0, sizeof(struct etrax_epid) * NBR_OF_EPIDS);
++
++  /* Set Invalid and Dummy as being in use and disabled */
++  epid_state[INVALID_EPID].inuse = 1;
++  epid_state[DUMMY_EPID].inuse = 1;
++  epid_state[INVALID_EPID].disabled = 1;
++  epid_state[DUMMY_EPID].disabled = 1;
++
++  /* Clear counter for how many Isoc epids we have sat up */
++  isoc_epid_counter = 0;
++
++  /* Initialize the urb list by initiating a head for each list.
++     Also reset list hodling active URB for each epid */
++  for (i = 0; i < NBR_OF_EPIDS; i++) {
++    INIT_LIST_HEAD(&urb_list[i]);
++    activeUrbList[i] = NULL;
++  }
++
++  /* Init lock for URB lists */
++  spin_lock_init(&urb_list_lock);
++  /* Init lock for Etrax R_USB_EPT register */
++  spin_lock_init(&etrax_epid_lock);
++  /* Init lock for Etrax dma8 sub0 handling */
++  spin_lock_init(&etrax_dma8_sub0_lock);
++
++  /* We use kmem_cache_* to make sure that all DMA desc. are dword aligned */
++
++  /* Note that we specify sizeof(struct USB_EP_Desc) as the size, but also
++     allocate SB descriptors from this cache. This is ok since
++     sizeof(struct USB_EP_Desc) == sizeof(struct USB_SB_Desc). */
++//  usb_desc_cache = kmem_cache_create("usb_desc_cache",
++//				     sizeof(struct USB_EP_Desc), 0,
++//				     SLAB_HWCACHE_ALIGN, 0, 0);
++  usb_desc_cache = kmem_cache_create(
++				  "usb_desc_cache",
++				  sizeof(struct USB_EP_Desc),
++				  0,
++				  SLAB_HWCACHE_ALIGN,
++				  NULL);
++  if(usb_desc_cache == NULL) {
++    return -ENOMEM;
++  }
++
++  /* Create slab cache for speedy allocation of memory for isoc bottom-half
++     interrupt handling */
++//  isoc_compl_cache =
++//    kmem_cache_create("isoc_compl_cache",
++//		      sizeof(struct crisv10_isoc_complete_data),
++//		      0, SLAB_HWCACHE_ALIGN, 0, 0);
++  isoc_compl_cache = kmem_cache_create(
++				  "isoc_compl_cache",
++				  sizeof(struct crisv10_isoc_complete_data),
++				  0,
++				  SLAB_HWCACHE_ALIGN,
++				  NULL
++				  );
++
++  if(isoc_compl_cache == NULL) {
++    return -ENOMEM;
++  }
++
++  /* Create slab cache for speedy allocation of memory for later URB finish
++     struct */
++//  later_data_cache =
++//    kmem_cache_create("later_data_cache",
++//		      sizeof(struct urb_later_data),
++//		      0, SLAB_HWCACHE_ALIGN, 0, 0);
++
++  later_data_cache = kmem_cache_create(
++				  "later_data_cache",
++				  sizeof(struct urb_later_data),
++				  0,
++				  SLAB_HWCACHE_ALIGN,
++				  NULL
++				  );
++  
++  if(later_data_cache == NULL) {
++    return -ENOMEM;
++  }
++
++
++  /* Initiate the bulk start timer. */
++  init_timer(&bulk_start_timer);
++  bulk_start_timer.expires = jiffies + BULK_START_TIMER_INTERVAL;
++  bulk_start_timer.function = tc_bulk_start_timer_func;
++  add_timer(&bulk_start_timer);
++
++
++  /* Initiate the bulk eot timer. */
++  init_timer(&bulk_eot_timer);
++  bulk_eot_timer.expires = jiffies + BULK_EOT_TIMER_INTERVAL;
++  bulk_eot_timer.function = tc_bulk_eot_timer_func;
++  bulk_eot_timer.data = (unsigned long)hcd;
++  add_timer(&bulk_eot_timer);
++
++  return 0;
++}
++
++/* Uninitialize all resources used by Transfer Controller */
++void tc_destroy(void) {
++
++  /* Destroy all slab cache */
++  kmem_cache_destroy(usb_desc_cache);
++  kmem_cache_destroy(isoc_compl_cache);
++  kmem_cache_destroy(later_data_cache);
++
++  /* Remove timers */
++  del_timer(&bulk_start_timer);
++  del_timer(&bulk_eot_timer);
++}
++
++static void restart_dma8_sub0(void) {
++  unsigned long flags;
++  spin_lock_irqsave(&etrax_dma8_sub0_lock, flags);
++  /* Verify that the dma is not running */
++  if ((*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd)) == 0) {
++    struct USB_EP_Desc *ep = (struct USB_EP_Desc *)phys_to_virt(*R_DMA_CH8_SUB0_EP);
++    while (DUMMY_EPID == IO_EXTRACT(USB_EP_command, epid, ep->command)) {
++      ep = (struct USB_EP_Desc *)phys_to_virt(ep->next);
++    }
++    /* Advance the DMA to the next EP descriptor that is not a DUMMY_EPID.
++	 * ep->next is already a physical address. virt_to_phys is needed, see
++	 * http://mhonarc.axis.se/dev-etrax/msg08630.html
++	 */
++    //*R_DMA_CH8_SUB0_EP = ep->next;
++	*R_DMA_CH8_SUB0_EP = virt_to_phys(ep);
++    /* Restart the DMA */
++    *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start);
++  }
++  spin_unlock_irqrestore(&etrax_dma8_sub0_lock, flags);
++}
++
++/* queue an URB with the transfer controller (called from hcd_driver) */
++//static int tc_urb_enqueue(struct usb_hcd *hcd, 
++//			  struct usb_host_endpoint *ep,
++//			  struct urb *urb, 
++//			  gfp_t mem_flags) {
++static int tc_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
++{
++  int epid;
++  int retval;
++//  int bustime = 0;
++  int maxpacket;
++  unsigned long flags;
++  struct crisv10_urb_priv *urb_priv;
++  struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd);
++  DBFENTER;
++
++  if(!(crisv10_hcd->running)) {
++    /* The USB Controller is not running, probably because no device is 
++       attached. No idea to enqueue URBs then */
++    tc_warn("Rejected enqueueing of URB:0x%x because no dev attached\n",
++	    (unsigned int)urb);
++    return -ENOENT;
++  }
++
++  maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
++  
++  /* hinko ignore usb_pipeisoc */
++#if 0
++  /* Special case check for In Isoc transfers. Specification states that each
++     In Isoc transfer consists of one packet and therefore it should fit into
++     the transfer-buffer of an URB.
++     We do the check here to be sure (an invalid scenario can be produced with
++     parameters to the usbtest suite) */
++  if(usb_pipeisoc(urb->pipe) && usb_pipein(urb->pipe) &&
++     (urb->transfer_buffer_length < maxpacket)) {
++    tc_err("Submit In Isoc URB with buffer length:%d to pipe with maxpacketlen: %d\n", urb->transfer_buffer_length, maxpacket);
++    return -EMSGSIZE;
++  }
++
++  /* Check if there is enough bandwidth for periodic transfer  */
++  if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) {
++    /* only check (and later claim) if not already claimed */
++    if (urb->bandwidth == 0) {
++      bustime = usb_check_bandwidth(urb->dev, urb);
++      if (bustime < 0) {
++	tc_err("Not enough periodic bandwidth\n");
++	return -ENOSPC;
++      }
++    }
++  }
++#endif
++  
++  /* Check if there is a epid for URBs destination, if not this function
++     set up one. */
++  //epid = tc_setup_epid(ep, urb, mem_flags);
++  epid = tc_setup_epid(urb, mem_flags);
++  if (epid < 0) {
++    tc_err("Failed setup epid:%d for URB:0x%x\n", epid, (unsigned int)urb);
++    DBFEXIT;
++    return -ENOMEM;
++  }
++
++  if(urb == activeUrbList[epid]) {
++    tc_err("Resubmition of allready active URB:0x%x\n", (unsigned int)urb);
++    return -ENXIO;
++  }
++
++  if(urb_list_entry(urb, epid)) {
++    tc_err("Resubmition of allready queued URB:0x%x\n", (unsigned int)urb);
++    return -ENXIO;
++  }
++
++  /* If we actively have flaged endpoint as disabled then refuse submition */
++  if(epid_state[epid].disabled) {
++    return -ENOENT;
++  }
++
++  /* Allocate and init HC-private data for URB */
++  if(urb_priv_create(hcd, urb, epid, mem_flags) != 0) {
++    DBFEXIT;
++    return -ENOMEM;
++  }
++  urb_priv = urb->hcpriv;
++
++  tc_dbg("Enqueue URB:0x%x[%d] epid:%d (%s) bufflen:%d\n",
++	 (unsigned int)urb, urb_priv->urb_num, epid,
++	 pipe_to_str(urb->pipe), urb->transfer_buffer_length);
++
++  /* Create and link SBs required for this URB */
++  retval = create_sb_for_urb(urb, mem_flags);
++  if(retval != 0) {
++    tc_err("Failed to create SBs for URB:0x%x[%d]\n", (unsigned int)urb,
++	   urb_priv->urb_num);
++    urb_priv_free(hcd, urb);
++    DBFEXIT;
++    return retval;
++  }
++
++  /* Init intr EP pool if this URB is a INTR transfer. This pool is later
++     used when inserting EPs in the TxIntrEPList. We do the alloc here
++     so we can't run out of memory later */
++  if(usb_pipeint(urb->pipe)) {
++    retval = init_intr_urb(urb, mem_flags);
++    if(retval != 0) {
++      tc_warn("Failed to init Intr URB\n");
++      urb_priv_free(hcd, urb);
++      DBFEXIT;
++      return retval;
++    }
++  }
++
++  /* Disable other access when inserting USB */
++
++  /* BUG on sleeping inside int disabled if using local_irq_save/local_irq_restore
++   * her - because urb_list_add() and tc_dma_process_queue() save irqs again !??!
++   */
++//  local_irq_save(flags);
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++  /* Claim bandwidth, if needed */
++  if(bustime) {
++    usb_claim_bandwidth(urb->dev, urb, bustime, 0);
++  }
++  
++  /* Add URB to EP queue */
++  urb_list_add(urb, epid, mem_flags);
++
++  if(usb_pipeisoc(urb->pipe)) {
++    /* Special processing of Isoc URBs. */
++    tc_dma_process_isoc_urb(urb);
++  } else {
++    /* Process EP queue for rest of the URB types (Bulk, Ctrl, Intr) */
++    tc_dma_process_queue(epid);
++  }
++#endif
++  /* Add URB to EP queue */
++  urb_list_add(urb, epid, mem_flags);
++
++  /*hinko link/unlink urb -> ep */
++  spin_lock_irqsave(&crisv10_hcd->lock, flags);
++  //spin_lock(&crisv10_hcd->lock);
++  retval = usb_hcd_link_urb_to_ep(hcd, urb);
++  if (retval) {
++    spin_unlock_irqrestore(&crisv10_hcd->lock, flags);
++    tc_warn("Failed to link urb to ep\n");
++    urb_priv_free(hcd, urb);
++    DBFEXIT;
++    return retval;
++  }
++  spin_unlock_irqrestore(&crisv10_hcd->lock, flags);
++  //spin_unlock(&crisv10_hcd->lock);
++  
++  /* Process EP queue for rest of the URB types (Bulk, Ctrl, Intr) */
++  tc_dma_process_queue(epid);
++
++//  local_irq_restore(flags);
++
++  DBFEXIT;
++  return 0;
++}
++
++/* remove an URB from the transfer controller queues (called from hcd_driver)*/
++//static int tc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
++static int tc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
++{
++  struct crisv10_urb_priv *urb_priv;
++  unsigned long flags;
++  int epid;
++
++  DBFENTER;
++  /* Disable interrupts here since a descriptor interrupt for the isoc epid
++     will modify the sb list.  This could possibly be done more granular, but
++     urb_dequeue should not be used frequently anyway.
++  */
++  local_irq_save(flags);
++
++  urb_priv = urb->hcpriv;
++
++  if (!urb_priv) {
++    /* This happens if a device driver calls unlink on an urb that
++       was never submitted (lazy driver) or if the urb was completed
++       while dequeue was being called. */
++    tc_warn("Dequeing of not enqueued URB:0x%x\n", (unsigned int)urb);
++    local_irq_restore(flags);
++    return 0;
++  }
++  epid = urb_priv->epid;
++
++  tc_warn("Dequeing %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n",
++	  (urb == activeUrbList[epid]) ? "active" : "queued",
++	  (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe),
++	  str_type(urb->pipe), epid, urb->status,
++	  (urb_priv->later_data) ? "later-sched" : "");
++
++  /* For Bulk, Ctrl and Intr are only one URB active at a time. So any URB
++     that isn't active can be dequeued by just removing it from the queue */
++  if(usb_pipebulk(urb->pipe) || usb_pipecontrol(urb->pipe) ||
++     usb_pipeint(urb->pipe)) {
++
++    /* Check if URB haven't gone further than the queue */
++    if(urb != activeUrbList[epid]) {
++      ASSERT(urb_priv->later_data == NULL);
++      tc_warn("Dequeing URB:0x%x[%d] (%s %s epid:%d) from queue"
++	      " (not active)\n", (unsigned int)urb, urb_priv->urb_num,
++	      str_dir(urb->pipe), str_type(urb->pipe), epid);
++      
++      /* Finish the URB with error status from USB core */
++      tc_finish_urb(hcd, urb, urb->status);
++      local_irq_restore(flags);
++      return 0;
++    }
++  }
++
++  /* Set URB status to Unlink for handling when interrupt comes. */
++  urb_priv->urb_state = UNLINK;
++
++  /* Differentiate dequeing of Bulk and Ctrl from Isoc and Intr */
++  switch(usb_pipetype(urb->pipe)) {
++  case PIPE_BULK:
++    /* Check if EP still is enabled */
++    if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++      /* The EP was enabled, disable it. */
++      TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++    }
++    /* Kicking dummy list out of the party. */
++    TxBulkEPList[epid].next = virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]);
++    break;
++  case PIPE_CONTROL:
++    /* Check if EP still is enabled */
++    if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++      /* The EP was enabled, disable it. */
++      TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++    }
++    break;
++  case PIPE_ISOCHRONOUS:
++    /* Disabling, busy-wait and unlinking of Isoc SBs will be done in
++       finish_isoc_urb(). Because there might the case when URB is dequeued
++       but there are other valid URBs waiting */
++
++    /* Check if In Isoc EP still is enabled */
++    if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++      /* The EP was enabled, disable it. */
++      TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++    }
++    break;
++  case PIPE_INTERRUPT:
++    /* Special care is taken for interrupt URBs. EPs are unlinked in
++       tc_finish_urb */
++    break;
++  default:
++    break;
++  }
++
++  /* Asynchronous unlink, finish the URB later from scheduled or other
++     event (data finished, error) */
++  tc_finish_urb_later(hcd, urb, urb->status);
++
++  local_irq_restore(flags);
++  DBFEXIT;
++  return 0;
++}
++
++
++static void tc_sync_finish_epid(struct usb_hcd *hcd, int epid) {
++  volatile int timeout = 10000;
++  struct urb* urb;
++  struct crisv10_urb_priv* urb_priv;
++  unsigned long flags;
++  
++  volatile struct USB_EP_Desc *first_ep;  /* First EP in the list. */
++  volatile struct USB_EP_Desc *curr_ep;   /* Current EP, the iterator. */
++  volatile struct USB_EP_Desc *next_ep;   /* The EP after current. */
++
++  int type = epid_state[epid].type;
++
++  /* Setting this flag will cause enqueue() to return -ENOENT for new
++     submitions on this endpoint and finish_urb() wont process queue further */
++  epid_state[epid].disabled = 1;
++
++  switch(type) {
++  case PIPE_BULK:
++    /* Check if EP still is enabled */
++    if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++      /* The EP was enabled, disable it. */
++      TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++      tc_warn("sync_finish: Disabling EP for epid:%d\n", epid);
++
++      /* Do busy-wait until DMA not using this EP descriptor anymore */
++      while((*R_DMA_CH8_SUB0_EP ==
++	     virt_to_phys(&TxBulkEPList[epid])) &&
++	    (timeout-- > 0));
++      if(timeout == 0) {
++	warn("Timeout while waiting for DMA-TX-Bulk to leave EP for"
++	     " epid:%d\n", epid);
++      }
++    }
++    break;
++
++  case PIPE_CONTROL:
++    /* Check if EP still is enabled */
++    if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++      /* The EP was enabled, disable it. */
++      TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++      tc_warn("sync_finish: Disabling EP for epid:%d\n", epid);
++
++      /* Do busy-wait until DMA not using this EP descriptor anymore */
++      while((*R_DMA_CH8_SUB1_EP ==
++	     virt_to_phys(&TxCtrlEPList[epid])) &&
++	    (timeout-- > 0));
++      if(timeout == 0) {
++	warn("Timeout while waiting for DMA-TX-Ctrl to leave EP for"
++	     " epid:%d\n", epid);
++      }
++    }
++    break;
++
++  case PIPE_INTERRUPT:
++    local_irq_save(flags);
++    /* Disable all Intr EPs belonging to epid */
++    first_ep = &TxIntrEPList[0];
++    curr_ep = first_ep;
++    do {
++      next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next);
++      if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) {
++	/* Disable EP */
++	next_ep->command &= ~IO_MASK(USB_EP_command, enable);
++      }
++      curr_ep = phys_to_virt(curr_ep->next);
++    } while (curr_ep != first_ep);
++
++    local_irq_restore(flags);
++    break;
++
++  case PIPE_ISOCHRONOUS:
++    /* Check if EP still is enabled */
++    if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++      tc_warn("sync_finish: Disabling Isoc EP for epid:%d\n", epid);
++      /* The EP was enabled, disable it. */
++      TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++      
++      while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) &&
++	    (timeout-- > 0));
++      if(timeout == 0) {
++	warn("Timeout while waiting for DMA-TX-Isoc to leave EP for"
++	     " epid:%d\n", epid);
++      }
++    }
++    break;
++  }
++
++  local_irq_save(flags);
++
++  /* Finish if there is active URB for this endpoint */
++  if(activeUrbList[epid] != NULL) {
++    urb = activeUrbList[epid];
++    urb_priv = urb->hcpriv;
++    ASSERT(urb_priv);
++    tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n",
++	    (urb == activeUrbList[epid]) ? "active" : "queued",
++	    (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe),
++	    str_type(urb->pipe), epid, urb->status,
++	    (urb_priv->later_data) ? "later-sched" : "");
++
++    tc_finish_urb(hcd, activeUrbList[epid], -ENOENT);
++    ASSERT(activeUrbList[epid] == NULL);
++  }
++
++  /* Finish any queued URBs for this endpoint. There won't be any resubmitions
++     because epid_disabled causes enqueue() to fail for this endpoint */
++  while((urb = urb_list_first(epid)) != NULL) {
++    urb_priv = urb->hcpriv;
++    ASSERT(urb_priv);
++
++    tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n",
++	    (urb == activeUrbList[epid]) ? "active" : "queued",
++	    (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe),
++	    str_type(urb->pipe), epid, urb->status,
++	    (urb_priv->later_data) ? "later-sched" : "");
++
++    tc_finish_urb(hcd, urb, -ENOENT);
++  }
++  epid_state[epid].disabled = 0;
++  local_irq_restore(flags);
++}
++
++/* free resources associated with an endpoint (called from hcd_driver) */
++static void tc_endpoint_disable(struct usb_hcd *hcd, 
++				struct usb_host_endpoint *ep) {
++  DBFENTER;
++  /* Only free epid if it has been allocated. We get two endpoint_disable
++     requests for ctrl endpoints so ignore the second one */
++  if(ep->hcpriv != NULL) {
++    struct crisv10_ep_priv *ep_priv = ep->hcpriv;
++    int epid = ep_priv->epid;
++    tc_warn("endpoint_disable ep:0x%x ep-priv:0x%x (%s) (epid:%d freed)\n",
++	   (unsigned int)ep, (unsigned int)ep->hcpriv,
++	   endpoint_to_str(&(ep->desc)), epid);
++
++    tc_sync_finish_epid(hcd, epid);
++
++    ASSERT(activeUrbList[epid] == NULL);
++    ASSERT(list_empty(&urb_list[epid]));
++
++    tc_free_epid(ep);
++  } else {
++    tc_dbg("endpoint_disable ep:0x%x ep-priv:0x%x (%s)\n", (unsigned int)ep,
++	   (unsigned int)ep->hcpriv, endpoint_to_str(&(ep->desc)));
++  }
++  DBFEXIT;
++}
++
++//static void tc_finish_urb_later_proc(void *data) {
++static void tc_finish_urb_later_proc(struct work_struct *work) {
++  unsigned long flags;
++  //struct urb_later_data* uld = (struct urb_later_data*)data;
++  struct urb_later_data* uld = container_of(work, struct urb_later_data, ws.work);
++  local_irq_save(flags);
++  if(uld->urb == NULL) {
++    late_dbg("Later finish of URB = NULL (allready finished)\n");
++  } else {
++    struct crisv10_urb_priv* urb_priv = uld->urb->hcpriv;
++    ASSERT(urb_priv);
++    if(urb_priv->urb_num == uld->urb_num) {
++      late_dbg("Later finish of URB:0x%x[%d]\n", (unsigned int)(uld->urb),
++	       urb_priv->urb_num);
++      if(uld->status != uld->urb->status) {
++	errno_dbg("Later-finish URB with status:%d, later-status:%d\n",
++		  uld->urb->status, uld->status);
++      }
++      if(uld != urb_priv->later_data) {
++	panic("Scheduled uld not same as URBs uld\n");
++      }
++      tc_finish_urb(uld->hcd, uld->urb, uld->status);
++    } else {
++      late_warn("Ignoring later finish of URB:0x%x[%d]"
++		", urb_num doesn't match current URB:0x%x[%d]",
++		(unsigned int)(uld->urb), uld->urb_num,
++		(unsigned int)(uld->urb), urb_priv->urb_num);
++    }
++  }
++  local_irq_restore(flags);
++  kmem_cache_free(later_data_cache, uld);
++}
++
++static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb,
++				int status) {
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  struct urb_later_data* uld;
++
++  ASSERT(urb_priv);
++
++  if(urb_priv->later_data != NULL) {
++    /* Later-finish allready scheduled for this URB, just update status to
++       return when finishing later */
++    errno_dbg("Later-finish schedule change URB status:%d with new"
++	      " status:%d\n", urb_priv->later_data->status, status);
++    
++    urb_priv->later_data->status = status;
++    return;
++  }
++
++  uld = kmem_cache_alloc(later_data_cache, GFP_ATOMIC);
++  ASSERT(uld);
++
++  uld->hcd = hcd;
++  uld->urb = urb;
++  uld->urb_num = urb_priv->urb_num;
++  uld->status = status;
++
++  //INIT_WORK(&uld->ws, tc_finish_urb_later_proc, uld);
++  INIT_DELAYED_WORK(&uld->ws, tc_finish_urb_later_proc);
++  urb_priv->later_data = uld;
++
++  /* Schedule the finishing of the URB to happen later */
++  schedule_delayed_work(&uld->ws, LATER_TIMER_DELAY);
++}
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb,
++			       int status);
++#endif
++
++static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status) {
++  struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd);
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  int epid;
++  char toggle;
++  int urb_num;
++
++  DBFENTER;
++  ASSERT(urb_priv != NULL);
++  epid = urb_priv->epid;
++  urb_num = urb_priv->urb_num;
++
++  if(urb != activeUrbList[epid]) {
++    if(urb_list_entry(urb, epid)) {
++      /* Remove this URB from the list. Only happens when URB are finished
++	 before having been processed (dequeing) */
++      urb_list_del(urb, epid);
++    } else {
++      tc_warn("Finishing of URB:0x%x[%d] neither active or in queue for"
++	      " epid:%d\n", (unsigned int)urb, urb_num, epid);
++    }
++  }
++
++  /* Cancel any pending later-finish of this URB */
++  if(urb_priv->later_data) {
++    urb_priv->later_data->urb = NULL;
++  }
++
++  /* For an IN pipe, we always set the actual length, regardless of whether
++     there was an error or not (which means the device driver can use the data
++     if it wants to). */
++  if(usb_pipein(urb->pipe)) {
++    urb->actual_length = urb_priv->rx_offset;
++  } else {
++    /* Set actual_length for OUT urbs also; the USB mass storage driver seems
++       to want that. */
++    if (status == 0 && urb->status == -EINPROGRESS) {
++      urb->actual_length = urb->transfer_buffer_length;
++    } else {
++      /*  We wouldn't know of any partial writes if there was an error. */
++      urb->actual_length = 0;
++    }
++  }
++
++
++  /* URB status mangling */
++  if(urb->status == -EINPROGRESS) {
++    /* The USB core hasn't changed the status, let's set our finish status */
++    urb->status = status;
++
++    if ((status == 0) && (urb->transfer_flags & URB_SHORT_NOT_OK) &&
++	usb_pipein(urb->pipe) &&
++	(urb->actual_length != urb->transfer_buffer_length)) {
++      /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's
++	 max length) is to be treated as an error. */
++      errno_dbg("Finishing URB:0x%x[%d] with SHORT_NOT_OK flag and short"
++		" data:%d\n", (unsigned int)urb, urb_num,
++		urb->actual_length);
++      urb->status = -EREMOTEIO;
++    }
++
++    if(urb_priv->urb_state == UNLINK) {
++      /* URB has been requested to be unlinked asynchronously */
++      urb->status = -ECONNRESET;
++      errno_dbg("Fixing unlink status of URB:0x%x[%d] to:%d\n",
++		(unsigned int)urb, urb_num, urb->status);
++    }
++  } else {
++    /* The USB Core wants to signal some error via the URB, pass it through */
++  }
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++  /* use completely different finish function for Isoc URBs */
++  if(usb_pipeisoc(urb->pipe)) {
++    tc_finish_isoc_urb(hcd, urb, status);
++    return;
++  }
++#endif
++
++  /* Do special unlinking of EPs for Intr traffic */
++  if(usb_pipeint(urb->pipe)) {
++    tc_dma_unlink_intr_urb(urb);
++  }
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++  /* Release allocated bandwidth for periodic transfers */
++  if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe))
++    usb_release_bandwidth(urb->dev, urb, 0);
++#endif
++  
++  /* This URB is active on EP */
++  if(urb == activeUrbList[epid]) {
++    /* We need to fiddle with the toggle bits because the hardware doesn't do
++       it for us. */
++    toggle = etrax_epid_get_toggle(epid, usb_pipeout(urb->pipe));
++    usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
++		  usb_pipeout(urb->pipe), toggle);
++
++    /* Checks for Ctrl and Bulk EPs */
++    switch(usb_pipetype(urb->pipe)) {
++    case PIPE_BULK:
++      /* Check so Bulk EP realy is disabled before finishing active URB  */
++      ASSERT((TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) ==
++	     IO_STATE(USB_EP_command, enable, no));
++      /* Disable sub-pointer for EP to avoid next tx_interrupt() to
++	 process Bulk EP. */
++      TxBulkEPList[epid].sub = 0;
++      /* No need to wait for the DMA before changing the next pointer.
++	 The modulo NBR_OF_EPIDS isn't actually necessary, since we will never use
++	 the last one (INVALID_EPID) for actual traffic. */
++      TxBulkEPList[epid].next = 
++	virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]);
++      break;
++    case PIPE_CONTROL:
++      /* Check so Ctrl EP realy is disabled before finishing active URB  */
++      ASSERT((TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) ==
++	     IO_STATE(USB_EP_command, enable, no));
++      /* Disable sub-pointer for EP to avoid next tx_interrupt() to
++	 process Ctrl EP. */
++      TxCtrlEPList[epid].sub = 0;
++      break;
++    }
++  }
++
++  /* Free HC-private URB data*/
++  urb_priv_free(hcd, urb);
++
++  if(urb->status) {
++    errno_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n",
++	      (unsigned int)urb, urb_num, str_dir(urb->pipe),
++	      str_type(urb->pipe), urb->actual_length, urb->status);
++  } else {
++    tc_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n",
++	   (unsigned int)urb, urb_num, str_dir(urb->pipe),
++	   str_type(urb->pipe), urb->actual_length, urb->status);
++  }
++
++  /* If we just finished an active URB, clear active pointer. */
++  if (urb == activeUrbList[epid]) {
++    /* Make URB not active on EP anymore */
++    activeUrbList[epid] = NULL;
++
++    if(urb->status == 0) {
++      /* URB finished sucessfully, process queue to see if there are any more
++	 URBs waiting before we call completion function.*/
++      if(crisv10_hcd->running) {
++	/* Only process queue if USB controller is running */
++	tc_dma_process_queue(epid);
++      } else {
++	tc_warn("No processing of queue for epid:%d, USB Controller not"
++		" running\n", epid);
++      }
++    }
++  }
++
++  /*  Hand the URB from HCD to its USB device driver, using its completion
++      functions */
++//  usb_hcd_giveback_urb (hcd, urb);
++	/**
++	 * usb_hcd_unlink_urb_from_ep - remove an URB from its endpoint queue
++	 * @hcd: host controller to which @urb was submitted
++	 * @urb: URB being unlinked
++	 *
++	 * Host controller drivers should call this routine before calling
++	 * usb_hcd_giveback_urb().  The HCD's private spinlock must be held and
++	 * interrupts must be disabled.  The actions carried out here are required
++	 * for URB completion.
++	 */
++  
++  /*hinko link/unlink urb -> ep */
++  //spin_lock(&crisv10_hcd->lock);
++  unsigned long flags;
++  spin_lock_irqsave(&crisv10_hcd->lock, flags);
++  usb_hcd_unlink_urb_from_ep(hcd, urb);
++  usb_hcd_giveback_urb(hcd, urb, status);
++  //spin_unlock(&crisv10_hcd->lock);
++  spin_unlock_irqrestore(&crisv10_hcd->lock, flags);
++
++  /* Check the queue once more if the URB returned with error, because we
++     didn't do it before the completion function because the specification
++     states that the queue should not restart until all it's unlinked
++     URBs have been fully retired, with the completion functions run */
++  if(crisv10_hcd->running) {
++    /* Only process queue if USB controller is running */
++    tc_dma_process_queue(epid);
++  } else {
++    tc_warn("No processing of queue for epid:%d, USB Controller not running\n",
++	    epid);
++  }
++
++  DBFEXIT;
++}
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb,
++			       int status) {
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  int epid, i;
++  volatile int timeout = 10000;
++
++  ASSERT(urb_priv);
++  epid = urb_priv->epid;
++
++  ASSERT(usb_pipeisoc(urb->pipe));
++
++  /* Set that all isoc packets have status and length set before
++     completing the urb. */
++  for (i = urb_priv->isoc_packet_counter; i < urb->number_of_packets; i++){
++    urb->iso_frame_desc[i].actual_length = 0;
++    urb->iso_frame_desc[i].status = -EPROTO;
++  }
++
++  /* Check if the URB is currently active (done or error) */
++  if(urb == activeUrbList[epid]) {
++    /* Check if there are another In Isoc URB queued for this epid */
++    if (!list_empty(&urb_list[epid])&& !epid_state[epid].disabled) {
++      /* Move it from queue to active and mark it started so Isoc transfers
++	 won't be interrupted.
++	 All Isoc URBs data transfers are already added to DMA lists so we
++	 don't have to insert anything in DMA lists here. */
++      activeUrbList[epid] = urb_list_first(epid);
++      ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_state =
++	STARTED;
++      urb_list_del(activeUrbList[epid], epid);
++
++      if(urb->status) {
++	errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)"
++		  " status:%d, new waiting URB:0x%x[%d]\n",
++		  (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe),
++		  str_type(urb->pipe), urb_priv->isoc_packet_counter,
++		  urb->number_of_packets, urb->status,
++		  (unsigned int)activeUrbList[epid],
++		  ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_num);
++      }
++
++    } else { /* No other URB queued for this epid */
++      if(urb->status) {
++	errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)"
++		  " status:%d, no new URB waiting\n",
++		  (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe),
++		  str_type(urb->pipe), urb_priv->isoc_packet_counter,
++		  urb->number_of_packets, urb->status);
++      }
++
++      /* Check if EP is still enabled, then shut it down. */
++      if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++	isoc_dbg("Isoc EP enabled for epid:%d, disabling it\n", epid);
++
++	/* Should only occur for In Isoc EPs where SB isn't consumed. */
++	ASSERT(usb_pipein(urb->pipe));
++
++	/* Disable it and wait for it to stop */
++	TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
++	
++	/* Ah, the luxury of busy-wait. */
++	while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) &&
++	      (timeout-- > 0));
++	if(timeout == 0) {
++	  warn("Timeout while waiting for DMA-TX-Isoc to leave EP for epid:%d\n", epid);
++	}
++      }
++
++      /* Unlink SB to say that epid is finished. */
++      TxIsocEPList[epid].sub = 0;
++      TxIsocEPList[epid].hw_len = 0;
++
++      /* No URB active for EP anymore */
++      activeUrbList[epid] = NULL;
++    }
++  } else { /* Finishing of not active URB (queued up with SBs thought) */
++    isoc_warn("finish_isoc_urb (URB:0x%x %s) (%d of %d packets) status:%d,"
++	      " SB queued but not active\n",
++	      (unsigned int)urb, str_dir(urb->pipe),
++	      urb_priv->isoc_packet_counter, urb->number_of_packets,
++	      urb->status);
++    if(usb_pipeout(urb->pipe)) {
++      /* Finishing of not yet active Out Isoc URB needs unlinking of SBs. */
++      struct USB_SB_Desc *iter_sb, *prev_sb, *next_sb;
++
++      iter_sb = TxIsocEPList[epid].sub ?
++	phys_to_virt(TxIsocEPList[epid].sub) : 0;
++      prev_sb = 0;
++
++      /* SB that is linked before this URBs first SB */
++      while (iter_sb && (iter_sb != urb_priv->first_sb)) {
++	prev_sb = iter_sb;
++	iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0;
++      }
++
++      if (iter_sb == 0) {
++	/* Unlink of the URB currently being transmitted. */
++	prev_sb = 0;
++	iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0;
++      }
++
++      while (iter_sb && (iter_sb != urb_priv->last_sb)) {
++	iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0;
++      }
++
++      if (iter_sb) {
++	next_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0;
++      } else {
++	/* This should only happen if the DMA has completed
++	   processing the SB list for this EP while interrupts
++	   are disabled. */
++	isoc_dbg("Isoc urb not found, already sent?\n");
++	next_sb = 0;
++      }
++      if (prev_sb) {
++	prev_sb->next = next_sb ? virt_to_phys(next_sb) : 0;
++      } else {
++	TxIsocEPList[epid].sub = next_sb ? virt_to_phys(next_sb) : 0;
++      }
++    }
++  }
++
++  /* Free HC-private URB data*/
++  urb_priv_free(hcd, urb);
++
++  usb_release_bandwidth(urb->dev, urb, 0);
++
++  /*  Hand the URB from HCD to its USB device driver, using its completion
++      functions */
++  usb_hcd_giveback_urb (hcd, urb);
++}
++#endif
++
++static __u32 urb_num = 0;
++
++/* allocate and initialize URB private data */
++static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid,
++			   int mem_flags) {
++  struct crisv10_urb_priv *urb_priv;
++  
++  urb_priv = kmalloc(sizeof *urb_priv, mem_flags);
++  if (!urb_priv)
++    return -ENOMEM;
++  memset(urb_priv, 0, sizeof *urb_priv);
++
++  urb_priv->epid = epid;
++  urb_priv->urb_state = NOT_STARTED;
++
++  urb->hcpriv = urb_priv;
++  /* Assign URB a sequence number, and increment counter */
++  urb_priv->urb_num = urb_num;
++  urb_num++;
++  return 0;
++}
++
++/* free URB private data */
++static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb) {
++  int i;
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  ASSERT(urb_priv != 0);
++
++  /* Check it has any SBs linked that needs to be freed*/
++  if(urb_priv->first_sb != NULL) {
++    struct USB_SB_Desc *next_sb, *first_sb, *last_sb;
++    int i = 0;
++    first_sb = urb_priv->first_sb;
++    last_sb = urb_priv->last_sb;
++    ASSERT(last_sb);
++    while(first_sb != last_sb) {
++      next_sb = (struct USB_SB_Desc *)phys_to_virt(first_sb->next);
++      kmem_cache_free(usb_desc_cache, first_sb);
++      first_sb = next_sb;
++      i++;
++    }
++    kmem_cache_free(usb_desc_cache, last_sb);
++    i++;
++  }
++
++  /* Check if it has any EPs in its Intr pool that also needs to be freed */
++  if(urb_priv->intr_ep_pool_length > 0) {
++    for(i = 0; i < urb_priv->intr_ep_pool_length; i++) {
++      kfree(urb_priv->intr_ep_pool[i]);
++    }
++    /*
++    tc_dbg("Freed %d EPs from URB:0x%x EP pool\n",
++	     urb_priv->intr_ep_pool_length, (unsigned int)urb);
++    */
++  }
++
++  kfree(urb_priv);
++  urb->hcpriv = NULL;
++}
++
++static int ep_priv_create(struct usb_host_endpoint *ep, int mem_flags) {
++  struct crisv10_ep_priv *ep_priv;
++  
++  ep_priv = kmalloc(sizeof *ep_priv, mem_flags);
++  if (!ep_priv)
++    return -ENOMEM;
++  memset(ep_priv, 0, sizeof *ep_priv);
++
++  ep->hcpriv = ep_priv;
++  return 0;
++}
++
++static void ep_priv_free(struct usb_host_endpoint *ep) {
++  struct crisv10_ep_priv *ep_priv = ep->hcpriv;
++  ASSERT(ep_priv);
++  kfree(ep_priv);
++  ep->hcpriv = NULL;
++}
++
++/* EPID handling functions, managing EP-list in Etrax through wrappers */
++/* ------------------------------------------------------------------- */
++
++/* Sets up a new EPID for an endpoint or returns existing if found */
++//static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb,
++//			 int mem_flags) {
++static int tc_setup_epid(struct urb *urb, int mem_flags)
++{
++  int epid;
++  char devnum, endpoint, out_traffic, slow;
++  int maxlen;
++  __u32 epid_data;
++  struct usb_host_endpoint *ep = urb->ep;
++  struct crisv10_ep_priv *ep_priv = ep->hcpriv;
++  
++  DBFENTER;
++  
++  /* Check if a valid epid already is setup for this endpoint */
++  if(ep_priv != NULL) {
++    return ep_priv->epid;
++  }
++
++  /* We must find and initiate a new epid for this urb. */
++  epid = tc_allocate_epid();
++  
++  if (epid == -1) {
++    /* Failed to allocate a new epid. */
++    DBFEXIT;
++    return epid;
++  }
++  
++  /* We now have a new epid to use. Claim it. */
++  epid_state[epid].inuse = 1;
++  
++  /* Init private data for new endpoint */
++  if(ep_priv_create(ep, mem_flags) != 0) {
++    return -ENOMEM;
++  }
++  ep_priv = ep->hcpriv;
++  ep_priv->epid = epid;
++
++  devnum = usb_pipedevice(urb->pipe);
++  endpoint = usb_pipeendpoint(urb->pipe);
++  slow = (urb->dev->speed == USB_SPEED_LOW);
++  maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
++
++  if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
++    /* We want both IN and OUT control traffic to be put on the same
++       EP/SB list. */
++    out_traffic = 1;
++  } else {
++    out_traffic = usb_pipeout(urb->pipe);
++  }
++    
++  if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++    epid_data = IO_STATE(R_USB_EPT_DATA_ISO, valid, yes) |
++      /* FIXME: Change any to the actual port? */
++      IO_STATE(R_USB_EPT_DATA_ISO, port, any) |
++      IO_FIELD(R_USB_EPT_DATA_ISO, max_len, maxlen) |
++      IO_FIELD(R_USB_EPT_DATA_ISO, ep, endpoint) |
++      IO_FIELD(R_USB_EPT_DATA_ISO, dev, devnum);
++    etrax_epid_iso_set(epid, epid_data);
++  } else {
++    epid_data = IO_STATE(R_USB_EPT_DATA, valid, yes) |
++      IO_FIELD(R_USB_EPT_DATA, low_speed, slow) |
++      /* FIXME: Change any to the actual port? */
++      IO_STATE(R_USB_EPT_DATA, port, any) |
++      IO_FIELD(R_USB_EPT_DATA, max_len, maxlen) |
++      IO_FIELD(R_USB_EPT_DATA, ep, endpoint) |
++      IO_FIELD(R_USB_EPT_DATA, dev, devnum);
++    etrax_epid_set(epid, epid_data);
++  }
++  
++  epid_state[epid].out_traffic = out_traffic;
++  epid_state[epid].type = usb_pipetype(urb->pipe);
++
++  tc_warn("Setting up ep:0x%x epid:%d (addr:%d endp:%d max_len:%d %s %s %s)\n",
++	  (unsigned int)ep, epid, devnum, endpoint, maxlen,
++	  str_type(urb->pipe), out_traffic ? "out" : "in",
++	  slow ? "low" : "full");
++
++  /* Enable Isoc eof interrupt if we set up the first Isoc epid */
++  if(usb_pipeisoc(urb->pipe)) {
++    isoc_epid_counter++;
++    if(isoc_epid_counter == 1) {
++      isoc_warn("Enabled Isoc eof interrupt\n");
++      *R_USB_IRQ_MASK_SET |= IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set);
++    }
++  }
++
++  DBFEXIT;
++  return epid;
++}
++
++static void tc_free_epid(struct usb_host_endpoint *ep) {
++  unsigned long flags;
++  struct crisv10_ep_priv *ep_priv = ep->hcpriv;
++  int epid;
++  volatile int timeout = 10000;
++
++  DBFENTER;
++
++  if (ep_priv == NULL) {
++    tc_warn("Trying to free unused epid on ep:0x%x\n", (unsigned int)ep);
++    DBFEXIT;
++    return;
++  }
++
++  epid = ep_priv->epid;
++
++  /* Disable Isoc eof interrupt if we free the last Isoc epid */
++  if(epid_isoc(epid)) {
++    ASSERT(isoc_epid_counter > 0);
++    isoc_epid_counter--;
++    if(isoc_epid_counter == 0) {
++      *R_USB_IRQ_MASK_SET &= ~IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set);
++      isoc_warn("Disabled Isoc eof interrupt\n");
++    }
++  }
++
++  /* Take lock manualy instead of in epid_x_x wrappers,
++     because we need to be polling here */
++  spin_lock_irqsave(&etrax_epid_lock, flags);
++  
++  *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
++  nop();
++  while((*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) &&
++	(timeout-- > 0));
++  if(timeout == 0) {
++    warn("Timeout while waiting for epid:%d to drop hold\n", epid);
++  }
++  /* This will, among other things, set the valid field to 0. */
++  *R_USB_EPT_DATA = 0;
++  spin_unlock_irqrestore(&etrax_epid_lock, flags);
++  
++  /* Free resource in software state info list */
++  epid_state[epid].inuse = 0;
++
++  /* Free private endpoint data */
++  ep_priv_free(ep);
++  
++  DBFEXIT;
++}
++
++static int tc_allocate_epid(void) {
++  int i;
++  DBFENTER;
++  for (i = 0; i < NBR_OF_EPIDS; i++) {
++    if (!epid_inuse(i)) {
++      DBFEXIT;
++      return i;
++    }
++  }
++  
++  tc_warn("Found no free epids\n");
++  DBFEXIT;
++  return -1;
++}
++
++
++/* Wrappers around the list functions (include/linux/list.h). */
++/* ---------------------------------------------------------- */
++static inline int __urb_list_empty(int epid) {
++  int retval;
++  retval = list_empty(&urb_list[epid]);
++  return retval;
++}
++
++/* Returns first urb for this epid, or NULL if list is empty. */
++static inline struct urb *urb_list_first(int epid) {
++  unsigned long flags;
++  struct urb *first_urb = 0;
++  spin_lock_irqsave(&urb_list_lock, flags);
++  if (!__urb_list_empty(epid)) {
++    /* Get the first urb (i.e. head->next). */
++    urb_entry_t *urb_entry = list_entry((&urb_list[epid])->next, urb_entry_t, list);
++    first_urb = urb_entry->urb;
++  }
++  spin_unlock_irqrestore(&urb_list_lock, flags);
++  return first_urb;
++}
++
++/* Adds an urb_entry last in the list for this epid. */
++static inline void urb_list_add(struct urb *urb, int epid, int mem_flags) {
++  unsigned long flags;
++  urb_entry_t *urb_entry = (urb_entry_t *)kmalloc(sizeof(urb_entry_t), mem_flags);
++  ASSERT(urb_entry);
++  
++  urb_entry->urb = urb;
++  spin_lock_irqsave(&urb_list_lock, flags);
++  list_add_tail(&urb_entry->list, &urb_list[epid]);
++  spin_unlock_irqrestore(&urb_list_lock, flags);
++}
++
++/* Search through the list for an element that contains this urb. (The list
++   is expected to be short and the one we are about to delete will often be
++   the first in the list.)
++   Should be protected by spin_locks in calling function */
++static inline urb_entry_t *__urb_list_entry(struct urb *urb, int epid) {
++  struct list_head *entry;
++  struct list_head *tmp;
++  urb_entry_t *urb_entry;
++  
++  list_for_each_safe(entry, tmp, &urb_list[epid]) {
++    urb_entry = list_entry(entry, urb_entry_t, list);
++    ASSERT(urb_entry);
++    ASSERT(urb_entry->urb);
++    
++    if (urb_entry->urb == urb) {
++      return urb_entry;
++    }
++  }
++  return 0;
++}
++
++/* Same function as above but for global use. Protects list by spinlock */
++static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid) {
++  unsigned long flags;
++  urb_entry_t *urb_entry;
++  spin_lock_irqsave(&urb_list_lock, flags);
++  urb_entry = __urb_list_entry(urb, epid);
++  spin_unlock_irqrestore(&urb_list_lock, flags);
++  return (urb_entry);
++}
++
++/* Delete an urb from the list. */
++static inline void urb_list_del(struct urb *urb, int epid) {
++  unsigned long flags;
++  urb_entry_t *urb_entry;
++
++  /* Delete entry and free. */
++  spin_lock_irqsave(&urb_list_lock, flags);
++  urb_entry = __urb_list_entry(urb, epid);
++  ASSERT(urb_entry);
++
++  list_del(&urb_entry->list);
++  spin_unlock_irqrestore(&urb_list_lock, flags);
++  kfree(urb_entry);
++}
++
++/* Move an urb to the end of the list. */
++static inline void urb_list_move_last(struct urb *urb, int epid) {
++  unsigned long flags;
++  urb_entry_t *urb_entry;
++  
++  spin_lock_irqsave(&urb_list_lock, flags);
++  urb_entry = __urb_list_entry(urb, epid);
++  ASSERT(urb_entry);
++
++  list_del(&urb_entry->list);
++  list_add_tail(&urb_entry->list, &urb_list[epid]);
++  spin_unlock_irqrestore(&urb_list_lock, flags);
++}
++
++/* Get the next urb in the list. */
++static inline struct urb *urb_list_next(struct urb *urb, int epid) {
++  unsigned long flags;
++  urb_entry_t *urb_entry;
++
++  spin_lock_irqsave(&urb_list_lock, flags);
++  urb_entry = __urb_list_entry(urb, epid);
++  ASSERT(urb_entry);
++
++  if (urb_entry->list.next != &urb_list[epid]) {
++    struct list_head *elem = urb_entry->list.next;
++    urb_entry = list_entry(elem, urb_entry_t, list);
++    spin_unlock_irqrestore(&urb_list_lock, flags);
++    return urb_entry->urb;
++  } else {
++    spin_unlock_irqrestore(&urb_list_lock, flags);
++    return NULL;
++  }
++}
++
++struct USB_EP_Desc* create_ep(int epid, struct USB_SB_Desc* sb_desc,
++			      int mem_flags) {
++  struct USB_EP_Desc *ep_desc;
++  ep_desc = (struct USB_EP_Desc *) kmem_cache_alloc(usb_desc_cache, mem_flags);
++  if(ep_desc == NULL)
++    return NULL;
++  memset(ep_desc, 0, sizeof(struct USB_EP_Desc));
++
++  ep_desc->hw_len = 0;
++  ep_desc->command = (IO_FIELD(USB_EP_command, epid, epid) |
++		      IO_STATE(USB_EP_command, enable, yes));
++  if(sb_desc == NULL) {
++    ep_desc->sub = 0;
++  } else {
++    ep_desc->sub = virt_to_phys(sb_desc);
++  }
++  return ep_desc;
++}
++
++#define TT_ZOUT  0
++#define TT_IN    1
++#define TT_OUT   2
++#define TT_SETUP 3
++
++#define CMD_EOL  IO_STATE(USB_SB_command, eol, yes)
++#define CMD_INTR IO_STATE(USB_SB_command, intr, yes)
++#define CMD_FULL IO_STATE(USB_SB_command, full, yes)
++
++/* Allocation and setup of a generic SB. Used to create SETUP, OUT and ZOUT
++   SBs. Also used by create_sb_in() to avoid same allocation procedure at two
++   places */
++struct USB_SB_Desc* create_sb(struct USB_SB_Desc* sb_prev, int tt, void* data,
++			      int datalen, int mem_flags) {
++  struct USB_SB_Desc *sb_desc;
++  sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags);
++  if(sb_desc == NULL)
++    return NULL;
++  memset(sb_desc, 0, sizeof(struct USB_SB_Desc));
++
++  sb_desc->command = IO_FIELD(USB_SB_command, tt, tt) |
++                     IO_STATE(USB_SB_command, eot, yes);
++
++  sb_desc->sw_len = datalen;
++  if(data != NULL) {
++    sb_desc->buf = virt_to_phys(data);
++  } else {
++    sb_desc->buf = 0;
++  }
++  if(sb_prev != NULL) {
++    sb_prev->next = virt_to_phys(sb_desc);
++  }
++  return sb_desc;
++}
++
++/* Creates a copy of an existing SB by allocation space for it and copy
++   settings */
++struct USB_SB_Desc* create_sb_copy(struct USB_SB_Desc* sb_orig, int mem_flags) {
++  struct USB_SB_Desc *sb_desc;
++  sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags);
++  if(sb_desc == NULL)
++    return NULL;
++
++  memcpy(sb_desc, sb_orig, sizeof(struct USB_SB_Desc));
++  return sb_desc;
++}
++
++/* A specific create_sb function for creation of in SBs. This is due to
++   that datalen in In SBs shows how many packets we are expecting. It also
++   sets up the rem field to show if how many bytes we expect in last packet
++   if it's not a full one */
++struct USB_SB_Desc* create_sb_in(struct USB_SB_Desc* sb_prev, int datalen,
++				 int maxlen, int mem_flags) {
++  struct USB_SB_Desc *sb_desc;
++  sb_desc = create_sb(sb_prev, TT_IN, NULL,
++		      datalen ? (datalen - 1) / maxlen + 1 : 0, mem_flags);
++  if(sb_desc == NULL)
++    return NULL;
++  sb_desc->command |= IO_FIELD(USB_SB_command, rem, datalen % maxlen);
++  return sb_desc;
++}
++
++void set_sb_cmds(struct USB_SB_Desc *sb_desc, __u16 flags) {
++  sb_desc->command |= flags;
++}
++
++int create_sb_for_urb(struct urb *urb, int mem_flags) {
++  int is_out = !usb_pipein(urb->pipe);
++  int type = usb_pipetype(urb->pipe);
++  int maxlen = usb_maxpacket(urb->dev, urb->pipe, is_out);
++  int buf_len = urb->transfer_buffer_length;
++  void *buf = buf_len > 0 ? urb->transfer_buffer : NULL;
++  struct USB_SB_Desc *sb_desc = NULL;
++
++  struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++  ASSERT(urb_priv != NULL);
++
++  switch(type) {
++  case PIPE_CONTROL:
++    /* Setup stage */
++    sb_desc = create_sb(NULL, TT_SETUP, urb->setup_packet, 8, mem_flags);
++    if(sb_desc == NULL)
++      return -ENOMEM;
++    set_sb_cmds(sb_desc, CMD_FULL);
++
++    /* Attach first SB to URB */
++    urb_priv->first_sb = sb_desc;    
++
++    if (is_out) { /* Out Control URB */
++      /* If this Control OUT transfer has an optional data stage we add
++	 an OUT token before the mandatory IN (status) token */
++      if ((buf_len > 0) && buf) {
++	sb_desc = create_sb(sb_desc, TT_OUT, buf, buf_len, mem_flags);
++	if(sb_desc == NULL)
++	  return -ENOMEM;
++	set_sb_cmds(sb_desc, CMD_FULL);
++      }
++
++      /* Status stage */
++      /* The data length has to be exactly 1. This is due to a requirement
++         of the USB specification that a host must be prepared to receive
++         data in the status phase */
++      sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++    } else { /* In control URB */
++      /* Data stage */
++      sb_desc = create_sb_in(sb_desc, buf_len, maxlen, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++
++      /* Status stage */
++      /* Read comment at zout_buffer declaration for an explanation to this. */
++      sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++      /* Set descriptor interrupt flag for in URBs so we can finish URB after
++         zout-packet has been sent */
++      set_sb_cmds(sb_desc, CMD_INTR | CMD_FULL);
++    }
++    /* Set end-of-list flag in last SB */
++    set_sb_cmds(sb_desc, CMD_EOL);
++    /* Attach last SB to URB */
++    urb_priv->last_sb = sb_desc;
++    break;
++
++  case PIPE_BULK:
++    if (is_out) { /* Out Bulk URB */
++      sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++      /* The full field is set to yes, even if we don't actually check that
++	 this is a full-length transfer (i.e., that transfer_buffer_length %
++	 maxlen = 0).
++	 Setting full prevents the USB controller from sending an empty packet
++	 in that case.  However, if URB_ZERO_PACKET was set we want that. */
++      if (!(urb->transfer_flags & URB_ZERO_PACKET)) {
++	set_sb_cmds(sb_desc, CMD_FULL);
++      }
++    } else { /* In Bulk URB */
++      sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++    }
++    /* Set end-of-list flag for last SB */
++    set_sb_cmds(sb_desc, CMD_EOL);
++
++    /* Attach SB to URB */
++    urb_priv->first_sb = sb_desc;
++    urb_priv->last_sb = sb_desc;
++    break;
++
++  case PIPE_INTERRUPT:
++    if(is_out) { /* Out Intr URB */
++      sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++
++      /* The full field is set to yes, even if we don't actually check that
++	 this is a full-length transfer (i.e., that transfer_buffer_length %
++	 maxlen = 0).
++	 Setting full prevents the USB controller from sending an empty packet
++	 in that case.  However, if URB_ZERO_PACKET was set we want that. */
++      if (!(urb->transfer_flags & URB_ZERO_PACKET)) {
++	set_sb_cmds(sb_desc, CMD_FULL);
++      }
++      /* Only generate TX interrupt if it's a Out URB*/
++      set_sb_cmds(sb_desc, CMD_INTR);
++
++    } else { /* In Intr URB */
++      sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++    }
++    /* Set end-of-list flag for last SB */
++    set_sb_cmds(sb_desc, CMD_EOL);
++
++    /* Attach SB to URB */
++    urb_priv->first_sb = sb_desc;
++    urb_priv->last_sb = sb_desc;
++
++    break;
++  case PIPE_ISOCHRONOUS:
++    if(is_out) { /* Out Isoc URB */
++      int i;
++      if(urb->number_of_packets == 0) {
++	tc_err("Can't create SBs for Isoc URB with zero packets\n");
++	return -EPIPE;
++      }
++      /* Create one SB descriptor for each packet and link them together. */
++      for(i = 0; i < urb->number_of_packets; i++) {
++	if (urb->iso_frame_desc[i].length > 0) {
++
++	  sb_desc = create_sb(sb_desc, TT_OUT, urb->transfer_buffer +
++			      urb->iso_frame_desc[i].offset,
++			      urb->iso_frame_desc[i].length, mem_flags);
++	  if(sb_desc == NULL)
++	    return -ENOMEM;
++
++	  /* Check if it's a full length packet */
++	  if (urb->iso_frame_desc[i].length ==
++	      usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) {
++	    set_sb_cmds(sb_desc, CMD_FULL);
++	  }
++	  
++	} else { /* zero length packet */
++	  sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags);
++	  if(sb_desc == NULL)
++	    return -ENOMEM;
++	  set_sb_cmds(sb_desc, CMD_FULL);
++	}
++	/* Attach first SB descriptor to URB */
++	if (i == 0) {
++	  urb_priv->first_sb = sb_desc;
++	}
++      }
++      /* Set interrupt and end-of-list flags in last SB */
++      set_sb_cmds(sb_desc, CMD_INTR | CMD_EOL);
++      /* Attach last SB descriptor to URB */
++      urb_priv->last_sb = sb_desc;
++      tc_dbg("Created %d out SBs for Isoc URB:0x%x\n",
++	       urb->number_of_packets, (unsigned int)urb);
++    } else { /* In Isoc URB */
++      /* Actual number of packets is not relevant for periodic in traffic as
++	 long as it is more than zero.  Set to 1 always. */
++      sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags);
++      if(sb_desc == NULL)
++	return -ENOMEM;
++      /* Set end-of-list flags for SB */
++      set_sb_cmds(sb_desc, CMD_EOL);
++
++      /* Attach SB to URB */
++      urb_priv->first_sb = sb_desc;
++      urb_priv->last_sb = sb_desc;
++    }
++    break;
++  default:
++    tc_err("Unknown pipe-type\n");
++    return -EPIPE;
++    break;
++  }
++  return 0;
++}
++
++int init_intr_urb(struct urb *urb, int mem_flags) {
++  struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++  struct USB_EP_Desc* ep_desc;
++  int interval;
++  int i;
++  int ep_count;
++
++  ASSERT(urb_priv != NULL);
++  ASSERT(usb_pipeint(urb->pipe));
++  /* We can't support interval longer than amount of eof descriptors in
++     TxIntrEPList */
++  if(urb->interval > MAX_INTR_INTERVAL) {
++    tc_err("Interrupt interval %dms too big (max: %dms)\n", urb->interval,
++	   MAX_INTR_INTERVAL);
++    return -EINVAL;
++  }
++
++  /* We assume that the SB descriptors already have been setup */
++  ASSERT(urb_priv->first_sb != NULL);
++
++  /* Round of the interval to 2^n, it is obvious that this code favours
++     smaller numbers, but that is actually a good thing */
++  /* FIXME: The "rounding error" for larger intervals will be quite
++     large. For in traffic this shouldn't be a problem since it will only
++     mean that we "poll" more often. */
++  interval = urb->interval;
++  for (i = 0; interval; i++) {
++    interval = interval >> 1;
++  }
++  urb_priv->interval = 1 << (i - 1);
++
++  /* We can only have max interval for Out Interrupt due to that we can only
++     handle one linked in EP for a certain epid in the Intr descr array at the
++     time. The USB Controller in the Etrax 100LX continues to process Intr EPs
++     so we have no way of knowing which one that caused the actual transfer if
++     we have several linked in. */
++  if(usb_pipeout(urb->pipe)) {
++    urb_priv->interval = MAX_INTR_INTERVAL;
++  }
++
++  /* Calculate amount of EPs needed */
++  ep_count = MAX_INTR_INTERVAL / urb_priv->interval;
++
++  for(i = 0; i < ep_count; i++) {
++    ep_desc = create_ep(urb_priv->epid, urb_priv->first_sb, mem_flags);
++    if(ep_desc == NULL) {
++      /* Free any descriptors that we may have allocated before failure */
++      while(i > 0) {
++	i--;
++	kfree(urb_priv->intr_ep_pool[i]);
++      }
++      return -ENOMEM;
++    }
++    urb_priv->intr_ep_pool[i] = ep_desc;
++  }
++  urb_priv->intr_ep_pool_length = ep_count;
++  return 0;
++}
++
++/* DMA RX/TX functions */
++/* ----------------------- */
++
++static void tc_dma_init_rx_list(void) {
++  int i;
++
++  /* Setup descriptor list except last one */
++  for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) {
++    RxDescList[i].sw_len = RX_DESC_BUF_SIZE;
++    RxDescList[i].command = 0;
++    RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]);
++    RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE));
++    RxDescList[i].hw_len = 0;
++    RxDescList[i].status = 0;
++    
++    /* DMA IN cache bug. (struct etrax_dma_descr has the same layout as
++       USB_IN_Desc for the relevant fields.) */
++    prepare_rx_descriptor((struct etrax_dma_descr*)&RxDescList[i]);
++    
++  }
++  /* Special handling of last descriptor */
++  RxDescList[i].sw_len = RX_DESC_BUF_SIZE;
++  RxDescList[i].command = IO_STATE(USB_IN_command, eol, yes);
++  RxDescList[i].next = virt_to_phys(&RxDescList[0]);
++  RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE));
++  RxDescList[i].hw_len = 0;
++  RxDescList[i].status = 0;
++  
++  /* Setup list pointers that show progress in list */
++  myNextRxDesc = &RxDescList[0];
++  myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
++  
++  flush_etrax_cache();
++  /* Point DMA to first descriptor in list and start it */
++  *R_DMA_CH9_FIRST = virt_to_phys(myNextRxDesc);
++  *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, start);
++}
++
++
++static void tc_dma_init_tx_bulk_list(void) {
++  int i;
++  volatile struct USB_EP_Desc *epDescr;
++
++  for (i = 0; i < (NBR_OF_EPIDS - 1); i++) {
++    epDescr = &(TxBulkEPList[i]);
++    CHECK_ALIGN(epDescr);
++    epDescr->hw_len = 0;
++    epDescr->command = IO_FIELD(USB_EP_command, epid, i);
++    epDescr->sub = 0;
++    epDescr->next = virt_to_phys(&TxBulkEPList[i + 1]);
++
++    /* Initiate two EPs, disabled and with the eol flag set. No need for any
++       preserved epid. */
++    
++    /* The first one has the intr flag set so we get an interrupt when the DMA
++       channel is about to become disabled. */
++    CHECK_ALIGN(&TxBulkDummyEPList[i][0]);
++    TxBulkDummyEPList[i][0].hw_len = 0;
++    TxBulkDummyEPList[i][0].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) |
++				       IO_STATE(USB_EP_command, eol, yes) |
++				       IO_STATE(USB_EP_command, intr, yes));
++    TxBulkDummyEPList[i][0].sub = 0;
++    TxBulkDummyEPList[i][0].next = virt_to_phys(&TxBulkDummyEPList[i][1]);
++    
++    /* The second one. */
++    CHECK_ALIGN(&TxBulkDummyEPList[i][1]);
++    TxBulkDummyEPList[i][1].hw_len = 0;
++    TxBulkDummyEPList[i][1].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) |
++				       IO_STATE(USB_EP_command, eol, yes));
++    TxBulkDummyEPList[i][1].sub = 0;
++    /* The last dummy's next pointer is the same as the current EP's next pointer. */
++    TxBulkDummyEPList[i][1].next = virt_to_phys(&TxBulkEPList[i + 1]);
++  }
++
++  /* Special handling of last descr in list, make list circular */
++  epDescr = &TxBulkEPList[i];
++  CHECK_ALIGN(epDescr);
++  epDescr->hw_len = 0;
++  epDescr->command = IO_STATE(USB_EP_command, eol, yes) |
++    IO_FIELD(USB_EP_command, epid, i);
++  epDescr->sub = 0;
++  epDescr->next = virt_to_phys(&TxBulkEPList[0]);
++  
++  /* Init DMA sub-channel pointers to last item in each list */
++  *R_DMA_CH8_SUB0_EP = virt_to_phys(&TxBulkEPList[i]);
++  /* No point in starting the bulk channel yet.
++   *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */
++}
++
++static void tc_dma_init_tx_ctrl_list(void) {
++  int i;
++  volatile struct USB_EP_Desc *epDescr;
++
++  for (i = 0; i < (NBR_OF_EPIDS - 1); i++) {
++    epDescr = &(TxCtrlEPList[i]);
++    CHECK_ALIGN(epDescr);
++    epDescr->hw_len = 0;
++    epDescr->command = IO_FIELD(USB_EP_command, epid, i);
++    epDescr->sub = 0;
++    epDescr->next = virt_to_phys(&TxCtrlEPList[i + 1]);
++  }
++  /* Special handling of last descr in list, make list circular */
++  epDescr = &TxCtrlEPList[i];
++  CHECK_ALIGN(epDescr);
++  epDescr->hw_len = 0;
++  epDescr->command = IO_STATE(USB_EP_command, eol, yes) |
++    IO_FIELD(USB_EP_command, epid, i);
++  epDescr->sub = 0;
++  epDescr->next = virt_to_phys(&TxCtrlEPList[0]);
++  
++  /* Init DMA sub-channel pointers to last item in each list */
++  *R_DMA_CH8_SUB1_EP = virt_to_phys(&TxCtrlEPList[i]);
++  /* No point in starting the ctrl channel yet.
++   *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */
++}
++
++
++static void tc_dma_init_tx_intr_list(void) {
++  int i;
++
++  TxIntrSB_zout.sw_len = 1;
++  TxIntrSB_zout.next = 0;
++  TxIntrSB_zout.buf = virt_to_phys(&zout_buffer[0]);
++  TxIntrSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) |
++			   IO_STATE(USB_SB_command, tt, zout) |
++			   IO_STATE(USB_SB_command, full, yes) |
++			   IO_STATE(USB_SB_command, eot, yes) |
++			   IO_STATE(USB_SB_command, eol, yes));
++  
++  for (i = 0; i < (MAX_INTR_INTERVAL - 1); i++) {
++    CHECK_ALIGN(&TxIntrEPList[i]);
++    TxIntrEPList[i].hw_len = 0;
++    TxIntrEPList[i].command =
++      (IO_STATE(USB_EP_command, eof, yes) |
++       IO_STATE(USB_EP_command, enable, yes) |
++       IO_FIELD(USB_EP_command, epid, INVALID_EPID));
++    TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout);
++    TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[i + 1]);
++  }
++
++  /* Special handling of last descr in list, make list circular */
++  CHECK_ALIGN(&TxIntrEPList[i]);
++  TxIntrEPList[i].hw_len = 0;
++  TxIntrEPList[i].command =
++    (IO_STATE(USB_EP_command, eof, yes) |
++     IO_STATE(USB_EP_command, eol, yes) |
++     IO_STATE(USB_EP_command, enable, yes) |
++     IO_FIELD(USB_EP_command, epid, INVALID_EPID));
++  TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout);
++  TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[0]);
++
++  intr_dbg("Initiated Intr EP descriptor list\n");
++
++
++  /* Connect DMA 8 sub-channel 2 to first in list */
++  *R_DMA_CH8_SUB2_EP = virt_to_phys(&TxIntrEPList[0]);
++}
++
++static void tc_dma_init_tx_isoc_list(void) {
++  int i;
++
++  DBFENTER;
++
++  /* Read comment at zout_buffer declaration for an explanation to this. */
++  TxIsocSB_zout.sw_len = 1;
++  TxIsocSB_zout.next = 0;
++  TxIsocSB_zout.buf = virt_to_phys(&zout_buffer[0]);
++  TxIsocSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) |
++			   IO_STATE(USB_SB_command, tt, zout) |
++			   IO_STATE(USB_SB_command, full, yes) |
++			   IO_STATE(USB_SB_command, eot, yes) |
++			   IO_STATE(USB_SB_command, eol, yes));
++
++  /* The last isochronous EP descriptor is a dummy. */
++  for (i = 0; i < (NBR_OF_EPIDS - 1); i++) {
++    CHECK_ALIGN(&TxIsocEPList[i]);
++    TxIsocEPList[i].hw_len = 0;
++    TxIsocEPList[i].command = IO_FIELD(USB_EP_command, epid, i);
++    TxIsocEPList[i].sub = 0;
++    TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[i + 1]);
++  }
++
++  CHECK_ALIGN(&TxIsocEPList[i]);
++  TxIsocEPList[i].hw_len = 0;
++
++  /* Must enable the last EP descr to get eof interrupt. */
++  TxIsocEPList[i].command = (IO_STATE(USB_EP_command, enable, yes) |
++			     IO_STATE(USB_EP_command, eof, yes) |
++			     IO_STATE(USB_EP_command, eol, yes) |
++			     IO_FIELD(USB_EP_command, epid, INVALID_EPID));
++  TxIsocEPList[i].sub = virt_to_phys(&TxIsocSB_zout);
++  TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[0]);
++
++  *R_DMA_CH8_SUB3_EP = virt_to_phys(&TxIsocEPList[0]);
++  *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start);
++}
++
++static int tc_dma_init(struct usb_hcd *hcd) {
++  tc_dma_init_rx_list();
++  tc_dma_init_tx_bulk_list();
++  tc_dma_init_tx_ctrl_list();
++  tc_dma_init_tx_intr_list();
++  tc_dma_init_tx_isoc_list();
++
++  if (cris_request_dma(USB_TX_DMA_NBR,
++		       "ETRAX 100LX built-in USB (Tx)",
++		       DMA_VERBOSE_ON_ERROR,
++		       dma_usb)) {
++    err("Could not allocate DMA ch 8 for USB");
++    return -EBUSY;
++  }
++ 	
++  if (cris_request_dma(USB_RX_DMA_NBR,
++		       "ETRAX 100LX built-in USB (Rx)",
++		       DMA_VERBOSE_ON_ERROR,
++		       dma_usb)) {
++    err("Could not allocate DMA ch 9 for USB");
++    return -EBUSY;
++  }
++
++  *R_IRQ_MASK2_SET =
++    /* Note that these interrupts are not used. */
++    IO_STATE(R_IRQ_MASK2_SET, dma8_sub0_descr, set) |
++    /* Sub channel 1 (ctrl) descr. interrupts are used. */
++    IO_STATE(R_IRQ_MASK2_SET, dma8_sub1_descr, set) |
++    IO_STATE(R_IRQ_MASK2_SET, dma8_sub2_descr, set) |
++    /* Sub channel 3 (isoc) descr. interrupts are used. */
++    IO_STATE(R_IRQ_MASK2_SET, dma8_sub3_descr, set);
++  
++  /* Note that the dma9_descr interrupt is not used. */
++  *R_IRQ_MASK2_SET =
++    IO_STATE(R_IRQ_MASK2_SET, dma9_eop, set) |
++    IO_STATE(R_IRQ_MASK2_SET, dma9_descr, set);
++
++  if (request_irq(ETRAX_USB_RX_IRQ, tc_dma_rx_interrupt, 0,
++		  "ETRAX 100LX built-in USB (Rx)", hcd)) {
++    err("Could not allocate IRQ %d for USB", ETRAX_USB_RX_IRQ);
++    return -EBUSY;
++  }
++  
++  if (request_irq(ETRAX_USB_TX_IRQ, tc_dma_tx_interrupt, 0,
++		  "ETRAX 100LX built-in USB (Tx)", hcd)) {
++    err("Could not allocate IRQ %d for USB", ETRAX_USB_TX_IRQ);
++    return -EBUSY;
++  }
++
++  return 0;
++}
++
++static void tc_dma_destroy(void) {
++  free_irq(ETRAX_USB_RX_IRQ, NULL);
++  free_irq(ETRAX_USB_TX_IRQ, NULL);
++
++  cris_free_dma(USB_TX_DMA_NBR, "ETRAX 100LX built-in USB (Tx)");
++  cris_free_dma(USB_RX_DMA_NBR, "ETRAX 100LX built-in USB (Rx)");
++
++}
++
++static void tc_dma_link_intr_urb(struct urb *urb);
++
++/* Handle processing of Bulk, Ctrl and Intr queues */
++static void tc_dma_process_queue(int epid) {
++  struct urb *urb;
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  unsigned long flags;
++  char toggle;
++
++  if(epid_state[epid].disabled) {
++    /* Don't process any URBs on a disabled endpoint */
++    return;
++  }
++
++  /* Do not disturb us while fiddling with EPs and epids */
++  local_irq_save(flags);
++
++  /* For bulk, Ctrl and Intr can we only have one URB active at a time for
++     a specific EP. */
++  if(activeUrbList[epid] != NULL) {
++    /* An URB is already active on EP, skip checking queue */
++    local_irq_restore(flags);
++    return;
++  }
++
++  urb = urb_list_first(epid);
++  if(urb == NULL) {
++    /* No URB waiting in EP queue. Nothing do to */
++    local_irq_restore(flags);
++    return;
++  }
++
++  urb_priv = urb->hcpriv;
++  ASSERT(urb_priv != NULL);
++  ASSERT(urb_priv->urb_state == NOT_STARTED);
++  ASSERT(!usb_pipeisoc(urb->pipe));
++
++  /* Remove this URB from the queue and move it to active */
++  activeUrbList[epid] = urb;
++  urb_list_del(urb, epid);
++
++  urb_priv->urb_state = STARTED;
++
++  /* Reset error counters (regardless of which direction this traffic is). */
++  etrax_epid_clear_error(epid);
++
++  /* Special handling of Intr EP lists */
++  if(usb_pipeint(urb->pipe)) {
++    tc_dma_link_intr_urb(urb);
++    local_irq_restore(flags);
++    return;
++  }
++
++  /* Software must preset the toggle bits for Bulk and Ctrl */
++  if(usb_pipecontrol(urb->pipe)) {
++    /* Toggle bits are initialized only during setup transaction in a
++       CTRL transfer */
++    etrax_epid_set_toggle(epid, 0, 0);
++    etrax_epid_set_toggle(epid, 1, 0);
++  } else {
++    toggle = usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
++			   usb_pipeout(urb->pipe));
++    etrax_epid_set_toggle(epid, usb_pipeout(urb->pipe), toggle);
++  }
++
++  tc_dbg("Added SBs from (URB:0x%x %s %s) to epid %d: %s\n",
++	 (unsigned int)urb, str_dir(urb->pipe), str_type(urb->pipe), epid,
++	 sblist_to_str(urb_priv->first_sb));
++
++  /* We start the DMA sub channel without checking if it's running or not,
++     because:
++     1) If it's already running, issuing the start command is a nop.
++     2) We avoid a test-and-set race condition. */
++  switch(usb_pipetype(urb->pipe)) {
++  case PIPE_BULK:
++    /* Assert that the EP descriptor is disabled. */
++    ASSERT(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)));
++
++    /* Set up and enable the EP descriptor. */
++    TxBulkEPList[epid].sub = virt_to_phys(urb_priv->first_sb);
++    TxBulkEPList[epid].hw_len = 0;
++    TxBulkEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
++
++    /* Check if the dummy list is already with us (if several urbs were queued). */
++    if (usb_pipein(urb->pipe) && (TxBulkEPList[epid].next != virt_to_phys(&TxBulkDummyEPList[epid][0]))) {
++      tc_dbg("Inviting dummy list to the party for urb 0x%lx, epid %d", 
++	     (unsigned long)urb, epid);
++      
++      /* We don't need to check if the DMA is at this EP or not before changing the
++	 next pointer, since we will do it in one 32-bit write (EP descriptors are
++	 32-bit aligned). */
++      TxBulkEPList[epid].next = virt_to_phys(&TxBulkDummyEPList[epid][0]);
++    }
++
++    restart_dma8_sub0();
++
++    /* Update/restart the bulk start timer since we just started the channel.*/
++    mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL);
++    /* Update/restart the bulk eot timer since we just inserted traffic. */
++    mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL);
++    break;
++  case PIPE_CONTROL:
++    /* Assert that the EP descriptor is disabled. */
++    ASSERT(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)));
++
++    /* Set up and enable the EP descriptor. */
++    TxCtrlEPList[epid].sub = virt_to_phys(urb_priv->first_sb);
++    TxCtrlEPList[epid].hw_len = 0;
++    TxCtrlEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
++
++    *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start);
++    break;
++  }
++  local_irq_restore(flags);
++}
++
++static void tc_dma_link_intr_urb(struct urb *urb) {
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  volatile struct USB_EP_Desc *tmp_ep;
++  struct USB_EP_Desc *ep_desc;
++  int i = 0, epid;
++  int pool_idx = 0;
++
++  ASSERT(urb_priv != NULL);
++  epid = urb_priv->epid;
++  ASSERT(urb_priv->interval > 0);
++  ASSERT(urb_priv->intr_ep_pool_length > 0);
++
++  tmp_ep = &TxIntrEPList[0];
++
++  /* Only insert one EP descriptor in list for Out Intr URBs.
++     We can only handle Out Intr with interval of 128ms because
++     it's not possible to insert several Out Intr EPs because they
++     are not consumed by the DMA. */
++  if(usb_pipeout(urb->pipe)) {
++    ep_desc = urb_priv->intr_ep_pool[0];
++    ASSERT(ep_desc);
++    ep_desc->next = tmp_ep->next;
++    tmp_ep->next = virt_to_phys(ep_desc);
++    i++;
++  } else {
++    /* Loop through Intr EP descriptor list and insert EP for URB at
++       specified interval */
++    do {
++      /* Each EP descriptor with eof flag sat signals a new frame */
++      if (tmp_ep->command & IO_MASK(USB_EP_command, eof)) {
++	/* Insert a EP from URBs EP pool at correct interval */
++	if ((i % urb_priv->interval) == 0) {
++	  ep_desc = urb_priv->intr_ep_pool[pool_idx];
++	  ASSERT(ep_desc);
++	  ep_desc->next = tmp_ep->next;
++	  tmp_ep->next = virt_to_phys(ep_desc);
++	  pool_idx++;
++	  ASSERT(pool_idx <= urb_priv->intr_ep_pool_length);
++	}
++	i++;
++      }
++      tmp_ep = (struct USB_EP_Desc *)phys_to_virt(tmp_ep->next);
++    } while(tmp_ep != &TxIntrEPList[0]);
++  }
++
++  intr_dbg("Added SBs to intr epid %d: %s interval:%d (%d EP)\n", epid,
++	   sblist_to_str(urb_priv->first_sb), urb_priv->interval, pool_idx);
++
++  /* We start the DMA sub channel without checking if it's running or not,
++     because:
++     1) If it's already running, issuing the start command is a nop.
++     2) We avoid a test-and-set race condition. */
++  *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start);
++}
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++static void tc_dma_process_isoc_urb(struct urb *urb) {
++  unsigned long flags;
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  int epid;
++
++  /* Do not disturb us while fiddling with EPs and epids */
++  local_irq_save(flags);
++
++  ASSERT(urb_priv);
++  ASSERT(urb_priv->first_sb);
++  epid = urb_priv->epid;
++
++  if(activeUrbList[epid] == NULL) {
++    /* EP is idle, so make this URB active */
++    activeUrbList[epid] = urb;
++    urb_list_del(urb, epid);
++    ASSERT(TxIsocEPList[epid].sub == 0);
++    ASSERT(!(TxIsocEPList[epid].command &
++	     IO_STATE(USB_EP_command, enable, yes)));
++
++    /* Differentiate between In and Out Isoc. Because In SBs are not consumed*/
++    if(usb_pipein(urb->pipe)) {
++    /* Each EP for In Isoc will have only one SB descriptor, setup when
++       submitting the first active urb. We do it here by copying from URBs
++       pre-allocated SB. */
++      memcpy((void *)&(TxIsocSBList[epid]), urb_priv->first_sb,
++	     sizeof(TxIsocSBList[epid]));
++      TxIsocEPList[epid].hw_len = 0;
++      TxIsocEPList[epid].sub = virt_to_phys(&(TxIsocSBList[epid]));
++    } else {
++      /* For Out Isoc we attach the pre-allocated list of SBs for the URB */
++      TxIsocEPList[epid].hw_len = 0;
++      TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb);
++
++      isoc_dbg("Attached first URB:0x%x[%d] to epid:%d first_sb:0x%x"
++	       " last_sb::0x%x\n",
++	       (unsigned int)urb, urb_priv->urb_num, epid,
++	       (unsigned int)(urb_priv->first_sb),
++	       (unsigned int)(urb_priv->last_sb));
++    }
++
++    if (urb->transfer_flags & URB_ISO_ASAP) {
++      /* The isoc transfer should be started as soon as possible. The
++	 start_frame field is a return value if URB_ISO_ASAP was set. Comparing
++	 R_USB_FM_NUMBER with a USB Chief trace shows that the first isoc IN
++	 token is sent 2 frames later. I'm not sure how this affects usage of
++	 the start_frame field by the device driver, or how it affects things
++	 when USB_ISO_ASAP is not set, so therefore there's no compensation for
++	 the 2 frame "lag" here. */
++      urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff);
++      TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
++      urb_priv->urb_state = STARTED;
++      isoc_dbg("URB_ISO_ASAP set, urb->start_frame set to %d\n",
++	       urb->start_frame);
++    } else {
++      /* Not started yet. */
++      urb_priv->urb_state = NOT_STARTED;
++      isoc_warn("urb_priv->urb_state set to NOT_STARTED for URB:0x%x\n",
++		(unsigned int)urb);
++    }
++
++  } else {
++    /* An URB is already active on the EP. Leave URB in queue and let
++       finish_isoc_urb process it after current active URB */
++    ASSERT(TxIsocEPList[epid].sub != 0);
++
++    if(usb_pipein(urb->pipe)) {
++      /* Because there already is a active In URB on this epid we do nothing
++         and the finish_isoc_urb() function will handle switching to next URB*/
++
++    } else { /* For Out Isoc, insert new URBs traffic last in SB-list. */
++      struct USB_SB_Desc *temp_sb_desc;
++
++      /* Set state STARTED to all Out Isoc URBs added to SB list because we
++         don't know how many of them that are finished before descr interrupt*/
++      urb_priv->urb_state = STARTED;
++
++      /* Find end of current SB list by looking for SB with eol flag sat */
++      temp_sb_desc = phys_to_virt(TxIsocEPList[epid].sub);
++      while ((temp_sb_desc->command & IO_MASK(USB_SB_command, eol)) !=
++	     IO_STATE(USB_SB_command, eol, yes)) {
++	ASSERT(temp_sb_desc->next);
++	temp_sb_desc = phys_to_virt(temp_sb_desc->next);
++      }
++
++      isoc_dbg("Appended URB:0x%x[%d] (first:0x%x last:0x%x) to epid:%d"
++	       " sub:0x%x eol:0x%x\n",
++	       (unsigned int)urb, urb_priv->urb_num,
++	       (unsigned int)(urb_priv->first_sb),
++	       (unsigned int)(urb_priv->last_sb), epid,
++	       (unsigned int)phys_to_virt(TxIsocEPList[epid].sub),
++	       (unsigned int)temp_sb_desc);
++
++      /* Next pointer must be set before eol is removed. */
++      temp_sb_desc->next = virt_to_phys(urb_priv->first_sb);
++      /* Clear the previous end of list flag since there is a new in the
++	 added SB descriptor list. */
++      temp_sb_desc->command &= ~IO_MASK(USB_SB_command, eol);
++
++      if (!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) {
++	__u32 epid_data;
++	/* 8.8.5 in Designer's Reference says we should check for and correct
++	   any errors in the EP here.  That should not be necessary if
++	   epid_attn is handled correctly, so we assume all is ok. */
++	epid_data = etrax_epid_iso_get(epid);
++	if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) !=
++	    IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) {
++	  isoc_err("Disabled Isoc EP with error:%d on epid:%d when appending"
++		   " URB:0x%x[%d]\n",
++		   IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data), epid,
++		   (unsigned int)urb, urb_priv->urb_num);
++	}
++
++	/* The SB list was exhausted. */
++	if (virt_to_phys(urb_priv->last_sb) != TxIsocEPList[epid].sub) {
++	  /* The new sublist did not get processed before the EP was
++	     disabled.  Setup the EP again. */
++
++	  if(virt_to_phys(temp_sb_desc) == TxIsocEPList[epid].sub) {
++	    isoc_dbg("EP for epid:%d stoped at SB:0x%x before newly inserted"
++		     ", restarting from this URBs SB:0x%x\n",
++		     epid, (unsigned int)temp_sb_desc,
++		     (unsigned int)(urb_priv->first_sb));
++	    TxIsocEPList[epid].hw_len = 0;
++	    TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb);
++	    urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff);
++	    /* Enable the EP again so data gets processed this time */
++	    TxIsocEPList[epid].command |=
++	      IO_STATE(USB_EP_command, enable, yes);
++
++	  } else {
++	    /* The EP has been disabled but not at end this URB (god knows
++	       where). This should generate an epid_attn so we should not be
++	       here */
++	    isoc_warn("EP was disabled on sb:0x%x before SB list for"
++		     " URB:0x%x[%d] got processed\n",
++		     (unsigned int)phys_to_virt(TxIsocEPList[epid].sub),
++		     (unsigned int)urb, urb_priv->urb_num);
++	  }
++	} else {
++	  /* This might happend if we are slow on this function and isn't
++	     an error. */
++	  isoc_dbg("EP was disabled and finished with SBs from appended"
++		   " URB:0x%x[%d]\n", (unsigned int)urb, urb_priv->urb_num);
++	}
++      }
++    }
++  }
++  
++  /* Start the DMA sub channel */
++  *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start);
++
++  local_irq_restore(flags);
++}
++#endif
++
++static void tc_dma_unlink_intr_urb(struct urb *urb) {
++  struct crisv10_urb_priv *urb_priv = urb->hcpriv;
++  volatile struct USB_EP_Desc *first_ep;  /* First EP in the list. */
++  volatile struct USB_EP_Desc *curr_ep;   /* Current EP, the iterator. */
++  volatile struct USB_EP_Desc *next_ep;   /* The EP after current. */
++  volatile struct USB_EP_Desc *unlink_ep; /* The one we should remove from
++					     the list. */
++  int count = 0;
++  volatile int timeout = 10000;
++  int epid;
++
++  /* Read 8.8.4 in Designer's Reference, "Removing an EP Descriptor from the
++     List". */
++  ASSERT(urb_priv);
++  ASSERT(urb_priv->intr_ep_pool_length > 0);
++  epid = urb_priv->epid;
++
++  /* First disable all Intr EPs belonging to epid for this URB */
++  first_ep = &TxIntrEPList[0];
++  curr_ep = first_ep;
++  do {
++    next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next);
++    if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) {
++      /* Disable EP */
++      next_ep->command &= ~IO_MASK(USB_EP_command, enable);
++    }
++    curr_ep = phys_to_virt(curr_ep->next);
++  } while (curr_ep != first_ep);
++
++
++  /* Now unlink all EPs belonging to this epid from Descr list */
++  first_ep = &TxIntrEPList[0];
++  curr_ep = first_ep;
++  do {
++    next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next);
++    if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) {
++      /* This is the one we should unlink. */
++      unlink_ep = next_ep;
++
++      /* Actually unlink the EP from the DMA list. */
++      curr_ep->next = unlink_ep->next;
++
++      /* Wait until the DMA is no longer at this descriptor. */
++      while((*R_DMA_CH8_SUB2_EP == virt_to_phys(unlink_ep)) &&
++	    (timeout-- > 0));
++      if(timeout == 0) {
++	warn("Timeout while waiting for DMA-TX-Intr to leave unlink EP\n");
++      }
++      
++      count++;
++    }
++    curr_ep = phys_to_virt(curr_ep->next);
++  } while (curr_ep != first_ep);
++
++  if(count != urb_priv->intr_ep_pool_length) {
++    intr_warn("Unlinked %d of %d Intr EPs for URB:0x%x[%d]\n", count,
++	      urb_priv->intr_ep_pool_length, (unsigned int)urb,
++	      urb_priv->urb_num);
++  } else {
++    intr_dbg("Unlinked %d of %d interrupt EPs for URB:0x%x\n", count,
++	     urb_priv->intr_ep_pool_length, (unsigned int)urb);
++  }
++}
++
++static void check_finished_bulk_tx_epids(struct usb_hcd *hcd,
++						    int timer) {
++  unsigned long flags;
++  int epid;
++  struct urb *urb;
++  struct crisv10_urb_priv * urb_priv;
++  __u32 epid_data;
++
++  /* Protect TxEPList */
++  local_irq_save(flags);
++
++  for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
++    /* A finished EP descriptor is disabled and has a valid sub pointer */
++    if (!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) &&
++	(TxBulkEPList[epid].sub != 0)) {
++
++      /* Get the active URB for this epid */
++      urb = activeUrbList[epid];
++      /* Sanity checks */
++      ASSERT(urb);
++      urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++      ASSERT(urb_priv);
++      
++      /* Only handle finished out Bulk EPs here,
++	 and let RX interrupt take care of the rest */
++      if(!epid_out_traffic(epid)) {
++	continue;
++      }
++
++      if(timer) {
++	tc_warn("Found finished %s Bulk epid:%d URB:0x%x[%d] from timeout\n",
++		epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb,
++		urb_priv->urb_num);
++      } else {
++	tc_dbg("Found finished %s Bulk epid:%d URB:0x%x[%d] from interrupt\n",
++	       epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb,
++	       urb_priv->urb_num);
++      }
++
++      if(urb_priv->urb_state == UNLINK) {
++	/* This Bulk URB is requested to be unlinked, that means that the EP
++	   has been disabled and we might not have sent all data */
++	tc_finish_urb(hcd, urb, urb->status);
++	continue;
++      }
++
++      ASSERT(urb_priv->urb_state == STARTED);
++      if (phys_to_virt(TxBulkEPList[epid].sub) != urb_priv->last_sb) {
++	tc_err("Endpoint got disabled before reaching last sb\n");
++      }
++	
++      epid_data = etrax_epid_get(epid);
++      if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) ==
++	  IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) {
++	/* This means that the endpoint has no error, is disabled
++	   and had inserted traffic, i.e. transfer successfully completed. */
++	tc_finish_urb(hcd, urb, 0);
++      } else {
++	/* Shouldn't happen. We expect errors to be caught by epid
++	   attention. */
++	tc_err("Found disabled bulk EP desc (epid:%d error:%d)\n",
++	       epid, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data));
++      }
++    } else {
++      tc_dbg("Ignoring In Bulk epid:%d, let RX interrupt handle it\n", epid);
++    }
++  }
++
++  local_irq_restore(flags);
++}
++
++static void check_finished_ctrl_tx_epids(struct usb_hcd *hcd) {
++  unsigned long flags;
++  int epid;
++  struct urb *urb;
++  struct crisv10_urb_priv * urb_priv;
++  __u32 epid_data;
++
++  /* Protect TxEPList */
++  local_irq_save(flags);
++
++  for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
++    if(epid == DUMMY_EPID)
++      continue;
++
++    /* A finished EP descriptor is disabled and has a valid sub pointer */
++    if (!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) &&
++	(TxCtrlEPList[epid].sub != 0)) {
++      
++      /* Get the active URB for this epid */
++      urb = activeUrbList[epid];
++
++      if(urb == NULL) {
++	tc_warn("Found finished Ctrl epid:%d with no active URB\n", epid);
++	continue;
++      }
++      
++      /* Sanity checks */
++      ASSERT(usb_pipein(urb->pipe));
++      urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++      ASSERT(urb_priv);
++      if (phys_to_virt(TxCtrlEPList[epid].sub) != urb_priv->last_sb) {
++	tc_err("Endpoint got disabled before reaching last sb\n");
++      }
++
++      epid_data = etrax_epid_get(epid);
++      if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) ==
++	  IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) {
++	/* This means that the endpoint has no error, is disabled
++	   and had inserted traffic, i.e. transfer successfully completed. */
++
++	/* Check if RX-interrupt for In Ctrl has been processed before
++	   finishing the URB */
++	if(urb_priv->ctrl_rx_done) {
++	  tc_dbg("Finishing In Ctrl URB:0x%x[%d] in tx_interrupt\n",
++		 (unsigned int)urb, urb_priv->urb_num);
++	  tc_finish_urb(hcd, urb, 0);
++	} else {
++	  /* If we get zout descriptor interrupt before RX was done for a
++	     In Ctrl transfer, then we flag that and it will be finished
++	     in the RX-Interrupt */
++	  urb_priv->ctrl_zout_done = 1;
++	  tc_dbg("Got zout descr interrupt before RX interrupt\n");
++	}
++      } else {
++	/* Shouldn't happen. We expect errors to be caught by epid
++	   attention. */
++	tc_err("Found disabled Ctrl EP desc (epid:%d URB:0x%x[%d]) error_code:%d\n", epid, (unsigned int)urb, urb_priv->urb_num, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data));
++	__dump_ep_desc(&(TxCtrlEPList[epid]));
++	__dump_ept_data(epid);
++      }      
++    }
++  }
++  local_irq_restore(flags);
++}
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++/* This function goes through all epids that are setup for Out Isoc transfers
++   and marks (isoc_out_done) all queued URBs that the DMA has finished
++   transfer for.
++   No URB completetion is done here to make interrupt routine return quickly.
++   URBs are completed later with help of complete_isoc_bottom_half() that
++   becomes schedules when this functions is finished. */
++static void check_finished_isoc_tx_epids(void) {
++  unsigned long flags;
++  int epid;
++  struct urb *urb;
++  struct crisv10_urb_priv * urb_priv;
++  struct USB_SB_Desc* sb_desc;
++  int epid_done;
++
++  /* Protect TxIsocEPList */
++  local_irq_save(flags);
++
++  for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
++    if (TxIsocEPList[epid].sub == 0 || epid == INVALID_EPID ||
++	!epid_out_traffic(epid)) {
++      /* Nothing here to see. */
++      continue;
++    }
++    ASSERT(epid_inuse(epid));
++    ASSERT(epid_isoc(epid));
++
++    sb_desc = phys_to_virt(TxIsocEPList[epid].sub);
++    /* Find the last descriptor of the currently active URB for this ep.
++       This is the first descriptor in the sub list marked for a descriptor
++       interrupt. */
++    while (sb_desc && !IO_EXTRACT(USB_SB_command, intr, sb_desc->command)) {
++      sb_desc = sb_desc->next ? phys_to_virt(sb_desc->next) : 0;
++    }
++    ASSERT(sb_desc);
++
++    isoc_dbg("Descr IRQ checking epid:%d sub:0x%x intr:0x%x\n",
++	     epid, (unsigned int)phys_to_virt(TxIsocEPList[epid].sub),
++	     (unsigned int)sb_desc);
++
++    urb = activeUrbList[epid];
++    if(urb == NULL) {
++      isoc_err("Isoc Descr irq on epid:%d with no active URB\n", epid);
++      continue;
++    }
++
++    epid_done = 0;
++    while(urb && !epid_done) {
++      /* Sanity check. */
++      ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS);
++      ASSERT(usb_pipeout(urb->pipe));
++      
++      urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++      ASSERT(urb_priv);
++      ASSERT(urb_priv->urb_state == STARTED ||
++	     urb_priv->urb_state == UNLINK);
++      
++      if (sb_desc != urb_priv->last_sb) {
++	/* This urb has been sent. */
++	urb_priv->isoc_out_done = 1;
++
++      } else { /* Found URB that has last_sb as the interrupt reason */
++
++	/* Check if EP has been disabled, meaning that all transfers are done*/
++	if(!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) {
++	  ASSERT((sb_desc->command & IO_MASK(USB_SB_command, eol)) ==
++		 IO_STATE(USB_SB_command, eol, yes));
++	  ASSERT(sb_desc->next == 0);
++	  urb_priv->isoc_out_done = 1;
++	} else {
++	  isoc_dbg("Skipping URB:0x%x[%d] because EP not disabled yet\n",
++		   (unsigned int)urb, urb_priv->urb_num);
++	}
++	/* Stop looking any further in queue */
++	epid_done = 1;	
++      }
++
++      if (!epid_done) {
++	if(urb == activeUrbList[epid]) {
++	  urb = urb_list_first(epid);
++	} else {
++	  urb = urb_list_next(urb, epid);
++	}
++      }
++    } /* END: while(urb && !epid_done) */
++  }
++
++  local_irq_restore(flags);
++}
++
++
++/* This is where the Out Isoc URBs are realy completed. This function is
++   scheduled from tc_dma_tx_interrupt() when one or more Out Isoc transfers
++   are done. This functions completes all URBs earlier marked with
++   isoc_out_done by fast interrupt routine check_finished_isoc_tx_epids() */
++
++static void complete_isoc_bottom_half(void *data) {
++  struct crisv10_isoc_complete_data *comp_data;
++  struct usb_iso_packet_descriptor *packet;
++  struct crisv10_urb_priv * urb_priv;
++  unsigned long flags;
++  struct urb* urb;
++  int epid_done;
++  int epid;
++  int i;
++
++  comp_data = (struct crisv10_isoc_complete_data*)data;
++
++  local_irq_save(flags);
++
++  for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) {
++    if(!epid_inuse(epid) || !epid_isoc(epid) || !epid_out_traffic(epid) || epid == DUMMY_EPID) {
++      /* Only check valid Out Isoc epids */
++      continue;
++    }
++
++    isoc_dbg("Isoc bottom-half checking epid:%d, sub:0x%x\n", epid,
++	     (unsigned int)phys_to_virt(TxIsocEPList[epid].sub));
++
++    /* The descriptor interrupt handler has marked all transmitted Out Isoc
++       URBs with isoc_out_done.  Now we traverse all epids and for all that
++       have out Isoc traffic we traverse its URB list and complete the
++       transmitted URBs. */
++    epid_done = 0;
++    while (!epid_done) {
++
++      /* Get the active urb (if any) */
++      urb = activeUrbList[epid];
++      if (urb == 0) {
++	isoc_dbg("No active URB on epid:%d anymore\n", epid);
++	epid_done = 1;
++	continue;
++      }
++
++      /* Sanity check. */
++      ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS);
++      ASSERT(usb_pipeout(urb->pipe));
++
++      urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++      ASSERT(urb_priv);
++
++      if (!(urb_priv->isoc_out_done)) {
++	/* We have reached URB that isn't flaged done yet, stop traversing. */
++	isoc_dbg("Stoped traversing Out Isoc URBs on epid:%d"
++		 " before not yet flaged URB:0x%x[%d]\n",
++		 epid, (unsigned int)urb, urb_priv->urb_num);
++	epid_done = 1;
++	continue;
++      }
++
++      /* This urb has been sent. */
++      isoc_dbg("Found URB:0x%x[%d] that is flaged isoc_out_done\n",
++	       (unsigned int)urb, urb_priv->urb_num);
++
++      /* Set ok on transfered packets for this URB and finish it */
++      for (i = 0; i < urb->number_of_packets; i++) {
++	packet = &urb->iso_frame_desc[i];
++	packet->status = 0;
++	packet->actual_length = packet->length;
++      }
++      urb_priv->isoc_packet_counter = urb->number_of_packets;
++      tc_finish_urb(comp_data->hcd, urb, 0);
++
++    } /* END: while(!epid_done) */
++  } /* END: for(epid...) */
++
++  local_irq_restore(flags);
++  kmem_cache_free(isoc_compl_cache, comp_data);
++}
++#endif
++
++static void check_finished_intr_tx_epids(struct usb_hcd *hcd) {
++  unsigned long flags;
++  int epid;
++  struct urb *urb;
++  struct crisv10_urb_priv * urb_priv;
++  volatile struct USB_EP_Desc *curr_ep;   /* Current EP, the iterator. */
++  volatile struct USB_EP_Desc *next_ep;   /* The EP after current. */
++
++  /* Protect TxintrEPList */
++  local_irq_save(flags);
++
++  for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
++    if(!epid_inuse(epid) || !epid_intr(epid) || !epid_out_traffic(epid)) {
++      /* Nothing to see on this epid. Only check valid Out Intr epids */
++      continue;
++    }
++
++    urb = activeUrbList[epid];
++    if(urb == 0) {
++      intr_warn("Found Out Intr epid:%d with no active URB\n", epid);
++      continue;
++    }
++
++    /* Sanity check. */
++    ASSERT(usb_pipetype(urb->pipe) == PIPE_INTERRUPT);
++    ASSERT(usb_pipeout(urb->pipe));
++    
++    urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++    ASSERT(urb_priv);
++
++    /* Go through EPs between first and second sof-EP. It's here Out Intr EPs
++       are inserted.*/
++    curr_ep = &TxIntrEPList[0];
++    do {
++      next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next);
++      if(next_ep == urb_priv->intr_ep_pool[0]) {
++	/* We found the Out Intr EP for this epid */
++	
++	/* Disable it so it doesn't get processed again */
++	next_ep->command &= ~IO_MASK(USB_EP_command, enable);
++
++	/* Finish the active Out Intr URB with status OK */
++	tc_finish_urb(hcd, urb, 0);
++      }
++      curr_ep = phys_to_virt(curr_ep->next);
++    } while (curr_ep != &TxIntrEPList[1]);
++
++  }
++  local_irq_restore(flags);
++}
++
++/* Interrupt handler for DMA8/IRQ24 with subchannels (called from hardware intr) */
++static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc) {
++  struct usb_hcd *hcd = (struct usb_hcd*)vhc;
++  ASSERT(hcd);
++
++  if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub0_descr)) {
++    /* Clear this interrupt */
++    *R_DMA_CH8_SUB0_CLR_INTR = IO_STATE(R_DMA_CH8_SUB0_CLR_INTR, clr_descr, do);
++    restart_dma8_sub0();
++  }
++
++  if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub1_descr)) {
++    /* Clear this interrupt */
++    *R_DMA_CH8_SUB1_CLR_INTR = IO_STATE(R_DMA_CH8_SUB1_CLR_INTR, clr_descr, do);
++    check_finished_ctrl_tx_epids(hcd);
++  }
++
++  if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub2_descr)) {
++    /* Clear this interrupt */
++    *R_DMA_CH8_SUB2_CLR_INTR = IO_STATE(R_DMA_CH8_SUB2_CLR_INTR, clr_descr, do);
++    check_finished_intr_tx_epids(hcd);
++  }
++
++  /* hinko ignore usb_pipeisoc */
++#if 0
++  if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub3_descr)) {
++    struct crisv10_isoc_complete_data* comp_data;
++
++    /* Flag done Out Isoc for later completion */
++    check_finished_isoc_tx_epids();
++
++    /* Clear this interrupt */
++    *R_DMA_CH8_SUB3_CLR_INTR = IO_STATE(R_DMA_CH8_SUB3_CLR_INTR, clr_descr, do);
++    /* Schedule bottom half of Out Isoc completion function. This function
++       finishes the URBs marked with isoc_out_done */
++    comp_data = (struct crisv10_isoc_complete_data*)
++      kmem_cache_alloc(isoc_compl_cache, GFP_ATOMIC);
++    ASSERT(comp_data != NULL);
++    comp_data ->hcd = hcd;
++
++    //INIT_WORK(&comp_data->usb_bh, complete_isoc_bottom_half, comp_data);
++    INIT_WORK(&comp_data->usb_bh, complete_isoc_bottom_half);
++    schedule_work(&comp_data->usb_bh);
++  }
++#endif
++
++  return IRQ_HANDLED;
++}
++
++/* Interrupt handler for DMA9/IRQ25 (called from hardware intr) */
++static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc) {
++  unsigned long flags;
++  struct urb *urb;
++  struct usb_hcd *hcd = (struct usb_hcd*)vhc;
++  struct crisv10_urb_priv *urb_priv;
++  int epid = 0;
++  int real_error;
++
++  ASSERT(hcd);
++
++  /* Clear this interrupt. */
++  *R_DMA_CH9_CLR_INTR = IO_STATE(R_DMA_CH9_CLR_INTR, clr_eop, do);
++
++  /* Custom clear interrupt for this interrupt */
++  /* The reason we cli here is that we call the driver's callback functions. */
++  local_irq_save(flags);
++
++  /* Note that this while loop assumes that all packets span only
++     one rx descriptor. */
++  while(myNextRxDesc->status & IO_MASK(USB_IN_status, eop)) {
++    epid = IO_EXTRACT(USB_IN_status, epid, myNextRxDesc->status);
++    /* Get the active URB for this epid */
++    urb = activeUrbList[epid];
++
++    ASSERT(epid_inuse(epid));
++    if (!urb) {
++      dma_err("No urb for epid %d in rx interrupt\n", epid);
++      goto skip_out;
++    }
++
++    /* Check if any errors on epid */
++    real_error = 0;
++    if (myNextRxDesc->status & IO_MASK(USB_IN_status, error)) {
++      __u32 r_usb_ept_data;
++
++      if (usb_pipeisoc(urb->pipe)) {
++	r_usb_ept_data = etrax_epid_iso_get(epid);
++	if((r_usb_ept_data & IO_MASK(R_USB_EPT_DATA_ISO, valid)) &&
++	   (IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data) == 0) &&
++	   (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata))) {
++	  /* Not an error, just a failure to receive an expected iso
++	     in packet in this frame.  This is not documented
++	     in the designers reference. Continue processing.
++	  */
++	} else real_error = 1;
++      } else real_error = 1;
++    }
++
++    if(real_error) {
++      dma_err("Error in RX descr on epid:%d for URB 0x%x",
++	      epid, (unsigned int)urb);
++      dump_ept_data(epid);
++      dump_in_desc(myNextRxDesc);
++      goto skip_out;
++    }
++
++    urb_priv = (struct crisv10_urb_priv *)urb->hcpriv;
++    ASSERT(urb_priv);
++    ASSERT(urb_priv->urb_state == STARTED ||
++	   urb_priv->urb_state == UNLINK);
++
++    if ((usb_pipetype(urb->pipe) == PIPE_BULK) ||
++	(usb_pipetype(urb->pipe) == PIPE_CONTROL) ||
++	(usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
++
++      /* We get nodata for empty data transactions, and the rx descriptor's
++	 hw_len field is not valid in that case. No data to copy in other
++	 words. */
++      if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) {
++	/* No data to copy */
++      } else {
++	/*
++	dma_dbg("Processing RX for URB:0x%x epid:%d (data:%d ofs:%d)\n",
++		(unsigned int)urb, epid, myNextRxDesc->hw_len,
++		urb_priv->rx_offset);
++	*/
++	/* Only copy data if URB isn't flaged to be unlinked*/
++	if(urb_priv->urb_state != UNLINK) {
++	  /* Make sure the data fits in the buffer. */
++	  if(urb_priv->rx_offset + myNextRxDesc->hw_len
++	     <= urb->transfer_buffer_length) {
++
++	    /* Copy the data to URBs buffer */
++	    memcpy(urb->transfer_buffer + urb_priv->rx_offset,
++		   phys_to_virt(myNextRxDesc->buf), myNextRxDesc->hw_len);
++	    urb_priv->rx_offset += myNextRxDesc->hw_len;
++	  } else {
++	    /* Signal overflow when returning URB */
++	    urb->status = -EOVERFLOW;
++	    tc_finish_urb_later(hcd, urb, urb->status);
++	  }
++	}
++      }
++
++      /* Check if it was the last packet in the transfer */
++      if (myNextRxDesc->status & IO_MASK(USB_IN_status, eot)) {
++	/* Special handling for In Ctrl URBs. */
++	if(usb_pipecontrol(urb->pipe) && usb_pipein(urb->pipe) &&
++	   !(urb_priv->ctrl_zout_done)) {
++	  /* Flag that RX part of Ctrl transfer is done. Because zout descr
++	     interrupt hasn't happend yet will the URB be finished in the
++	     TX-Interrupt. */
++	  urb_priv->ctrl_rx_done = 1;
++	  tc_dbg("Not finishing In Ctrl URB:0x%x from rx_interrupt, waiting"
++		 " for zout\n", (unsigned int)urb);
++	} else {
++	  tc_finish_urb(hcd, urb, 0);
++	}
++      }
++    } else { /* ISOC RX */
++      /*
++      isoc_dbg("Processing RX for epid:%d (URB:0x%x) ISOC pipe\n",
++	       epid, (unsigned int)urb);
++      */
++
++      struct usb_iso_packet_descriptor *packet;
++
++      if (urb_priv->urb_state == UNLINK) {
++	isoc_warn("Ignoring Isoc Rx data for urb being unlinked.\n");
++	goto skip_out;
++      } else if (urb_priv->urb_state == NOT_STARTED) {
++	isoc_err("What? Got Rx data for Isoc urb that isn't started?\n");
++	goto skip_out;
++      }
++
++      packet = &urb->iso_frame_desc[urb_priv->isoc_packet_counter];
++      ASSERT(packet);
++      packet->status = 0;
++
++      if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) {
++	/* We get nodata for empty data transactions, and the rx descriptor's
++	   hw_len field is not valid in that case. We copy 0 bytes however to
++	   stay in synch. */
++	packet->actual_length = 0;
++      } else {
++	packet->actual_length = myNextRxDesc->hw_len;
++	/* Make sure the data fits in the buffer. */
++	ASSERT(packet->actual_length <= packet->length);
++	memcpy(urb->transfer_buffer + packet->offset,
++	       phys_to_virt(myNextRxDesc->buf), packet->actual_length);
++	if(packet->actual_length > 0)
++	  isoc_dbg("Copied %d bytes, packet %d for URB:0x%x[%d]\n",
++		   packet->actual_length, urb_priv->isoc_packet_counter,
++		   (unsigned int)urb, urb_priv->urb_num);
++      }
++
++      /* Increment the packet counter. */
++      urb_priv->isoc_packet_counter++;
++
++      /* Note that we don't care about the eot field in the rx descriptor's
++	 status. It will always be set for isoc traffic. */
++      if (urb->number_of_packets == urb_priv->isoc_packet_counter) {
++	/* Complete the urb with status OK. */
++	tc_finish_urb(hcd, urb, 0);
++      }
++    }
++
++  skip_out:
++    myNextRxDesc->status = 0;
++    myNextRxDesc->command |= IO_MASK(USB_IN_command, eol);
++    myLastRxDesc->command &= ~IO_MASK(USB_IN_command, eol);
++    myLastRxDesc = myNextRxDesc;
++    myNextRxDesc = phys_to_virt(myNextRxDesc->next);
++    flush_etrax_cache();
++    *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, restart);
++  }
++
++  local_irq_restore(flags);
++
++  return IRQ_HANDLED;
++}
++
++static void tc_bulk_start_timer_func(unsigned long dummy) {
++  /* We might enable an EP descriptor behind the current DMA position when
++     it's about to decide that there are no more bulk traffic and it should
++     stop the bulk channel.
++     Therefore we periodically check if the bulk channel is stopped and there
++     is an enabled bulk EP descriptor, in which case we start the bulk
++     channel. */
++  
++  if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) {
++    int epid;
++
++    timer_dbg("bulk_start_timer: Bulk DMA channel not running.\n");
++
++    for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
++      if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
++	timer_warn("Found enabled EP for epid %d, starting bulk channel.\n",
++		   epid);
++	restart_dma8_sub0();
++
++	/* Restart the bulk eot timer since we just started the bulk channel.*/
++	mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL);
++
++	/* No need to search any further. */
++	break;
++      }
++    }
++  } else {
++    timer_dbg("bulk_start_timer: Bulk DMA channel running.\n");
++  }
++}
++
++static void tc_bulk_eot_timer_func(unsigned long dummy) {
++  struct usb_hcd *hcd = (struct usb_hcd*)dummy;
++  ASSERT(hcd);
++  /* Because of a race condition in the top half, we might miss a bulk eot.
++     This timer "simulates" a bulk eot if we don't get one for a while,
++     hopefully correcting the situation. */
++  timer_dbg("bulk_eot_timer timed out.\n");
++  check_finished_bulk_tx_epids(hcd, 1);
++}
++
++
++/*************************************************************/
++/*************************************************************/
++/* Device driver block                                       */
++/*************************************************************/
++/*************************************************************/
++
++/* Forward declarations for device driver functions */
++static int devdrv_hcd_probe(struct device *);
++static int devdrv_hcd_remove(struct device *);
++#ifdef CONFIG_PM
++static int devdrv_hcd_suspend(struct device *, u32, u32);
++static int devdrv_hcd_resume(struct device *, u32);
++#endif /* CONFIG_PM */
++
++/* the device */
++static struct platform_device *devdrv_hc_platform_device;
++
++/* device driver interface */
++static struct device_driver devdrv_hc_device_driver = {
++  .name =			(char *) hc_name,
++  .bus =			&platform_bus_type,
++
++  .probe =		devdrv_hcd_probe,
++  .remove =		devdrv_hcd_remove,
++
++#ifdef CONFIG_PM
++  .suspend =		devdrv_hcd_suspend,
++  .resume =		devdrv_hcd_resume,
++#endif /* CONFIG_PM */
++};
++
++/* initialize the host controller and driver  */
++static int __init_or_module devdrv_hcd_probe(struct device *dev)
++{
++  struct usb_hcd *hcd;
++  struct crisv10_hcd *crisv10_hcd;
++  int retval;
++
++  /* Check DMA burst length */
++  if(IO_EXTRACT(R_BUS_CONFIG, dma_burst, *R_BUS_CONFIG) !=
++     IO_STATE(R_BUS_CONFIG, dma_burst, burst32)) {
++    devdrv_err("Invalid DMA burst length in Etrax 100LX,"
++	       " needs to be 32\n");
++    return -EPERM;
++  }
++
++  hcd = usb_create_hcd(&crisv10_hc_driver, dev, dev->bus_id);
++  if (!hcd)
++    return -ENOMEM;
++
++  crisv10_hcd = hcd_to_crisv10_hcd(hcd);
++  spin_lock_init(&crisv10_hcd->lock);
++  crisv10_hcd->num_ports = num_ports();
++  crisv10_hcd->running = 0;
++
++  dev_set_drvdata(dev, crisv10_hcd);
++
++  devdrv_dbg("ETRAX USB IRQs HC:%d  RX:%d  TX:%d\n", ETRAX_USB_HC_IRQ,
++	  ETRAX_USB_RX_IRQ, ETRAX_USB_TX_IRQ);
++
++  /* Print out chip version read from registers */
++  int rev_maj = *R_USB_REVISION & IO_MASK(R_USB_REVISION, major);
++  int rev_min = *R_USB_REVISION & IO_MASK(R_USB_REVISION, minor);
++  if(rev_min == 0) {
++    devdrv_info("Etrax 100LX USB Revision %d v1,2\n", rev_maj);
++  } else {
++    devdrv_info("Etrax 100LX USB Revision %d v%d\n", rev_maj, rev_min);
++  }
++
++  devdrv_info("Bulk timer interval, start:%d eot:%d\n",
++	      BULK_START_TIMER_INTERVAL,
++	      BULK_EOT_TIMER_INTERVAL);
++
++
++  /* Init root hub data structures */
++  if(rh_init()) {
++    devdrv_err("Failed init data for Root Hub\n");
++    retval = -ENOMEM;
++  }
++
++  if(port_in_use(0)) {
++    if (cris_request_io_interface(if_usb_1, "ETRAX100LX USB-HCD")) {
++      printk(KERN_CRIT "usb-host: request IO interface usb1 failed");
++      retval = -EBUSY;
++      goto out;
++    }
++    devdrv_info("Claimed interface for USB physical port 1\n");
++  }
++  if(port_in_use(1)) {
++    if (cris_request_io_interface(if_usb_2, "ETRAX100LX USB-HCD")) {
++      /* Free first interface if second failed to be claimed */
++      if(port_in_use(0)) {
++	cris_free_io_interface(if_usb_1);
++      }
++      printk(KERN_CRIT "usb-host: request IO interface usb2 failed");
++      retval = -EBUSY;
++      goto out;
++    }
++    devdrv_info("Claimed interface for USB physical port 2\n");
++  }
++  
++  /* Init transfer controller structs and locks */
++  if((retval = tc_init(hcd)) != 0) {
++    goto out;
++  }
++
++  /* Attach interrupt functions for DMA and init DMA controller */
++  if((retval = tc_dma_init(hcd)) != 0) {
++    goto out;
++  }
++
++  /* Attach the top IRQ handler for USB controller interrupts */
++  if (request_irq(ETRAX_USB_HC_IRQ, crisv10_hcd_top_irq, 0,
++		  "ETRAX 100LX built-in USB (HC)", hcd)) {
++    err("Could not allocate IRQ %d for USB", ETRAX_USB_HC_IRQ);
++    retval = -EBUSY;
++    goto out;
++  }
++
++  /* iso_eof is only enabled when isoc traffic is running. */
++  *R_USB_IRQ_MASK_SET =
++    /* IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set) | */
++    IO_STATE(R_USB_IRQ_MASK_SET, bulk_eot, set) |
++    IO_STATE(R_USB_IRQ_MASK_SET, epid_attn, set) |
++    IO_STATE(R_USB_IRQ_MASK_SET, port_status, set) |
++    IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set);
++
++
++  crisv10_ready_wait();
++  /* Reset the USB interface. */
++  *R_USB_COMMAND =
++    IO_STATE(R_USB_COMMAND, port_sel, nop) |
++    IO_STATE(R_USB_COMMAND, port_cmd, reset) |
++    IO_STATE(R_USB_COMMAND, ctrl_cmd, reset);
++
++  /* Designer's Reference, p. 8 - 10 says we should Initate R_USB_FM_PSTART to
++     0x2A30 (10800), to guarantee that control traffic gets 10% of the
++     bandwidth, and periodic transfer may allocate the rest (90%).
++     This doesn't work though.
++     The value 11960 is chosen to be just after the SOF token, with a couple
++     of bit times extra for possible bit stuffing. */
++  *R_USB_FM_PSTART = IO_FIELD(R_USB_FM_PSTART, value, 11960);
++
++  crisv10_ready_wait();
++  /* Configure the USB interface as a host controller. */
++  *R_USB_COMMAND =
++    IO_STATE(R_USB_COMMAND, port_sel, nop) |
++    IO_STATE(R_USB_COMMAND, port_cmd, reset) |
++    IO_STATE(R_USB_COMMAND, ctrl_cmd, host_config);
++
++
++  /* Check so controller not busy before enabling ports */
++  crisv10_ready_wait();
++
++  /* Enable selected USB ports */
++  if(port_in_use(0)) {
++    *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no);
++  } else {
++    *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes);
++  }
++  if(port_in_use(1)) {
++    *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no);
++  } else {
++    *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes);
++  }
++
++  crisv10_ready_wait();
++  /* Start processing of USB traffic. */
++  *R_USB_COMMAND =
++    IO_STATE(R_USB_COMMAND, port_sel, nop) |
++    IO_STATE(R_USB_COMMAND, port_cmd, reset) |
++    IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run);
++
++  /* Do not continue probing initialization before USB interface is done */
++  crisv10_ready_wait();
++
++  /* Register our Host Controller to USB Core
++   * Finish the remaining parts of generic HCD initialization: allocate the
++   * buffers of consistent memory, register the bus
++   * and call the driver's reset() and start() routines. */
++  retval = usb_add_hcd(hcd, ETRAX_USB_HC_IRQ, IRQF_DISABLED);
++  if (retval != 0) {
++    devdrv_err("Failed registering HCD driver\n");
++    goto out;
++  }
++
++  return 0;
++
++ out:
++  devdrv_hcd_remove(dev);
++  return retval;
++}
++
++
++/* cleanup after the host controller and driver */
++static int __init_or_module devdrv_hcd_remove(struct device *dev)
++{
++  struct crisv10_hcd *crisv10_hcd = dev_get_drvdata(dev);
++  struct usb_hcd *hcd;
++
++  if (!crisv10_hcd)
++    return 0;
++  hcd = crisv10_hcd_to_hcd(crisv10_hcd);
++
++
++  /* Stop USB Controller in Etrax 100LX */
++  crisv10_hcd_reset(hcd);
++
++  usb_remove_hcd(hcd);
++  devdrv_dbg("Removed HCD from USB Core\n");
++
++  /* Free USB Controller IRQ */
++  free_irq(ETRAX_USB_HC_IRQ, NULL);
++
++  /* Free resources */
++  tc_dma_destroy();
++  tc_destroy();
++
++
++  if(port_in_use(0)) {
++    cris_free_io_interface(if_usb_1);
++  }
++  if(port_in_use(1)) {
++    cris_free_io_interface(if_usb_2);
++  }
++
++  devdrv_dbg("Freed all claimed resources\n");
++
++  return 0;
++}
++
++
++#ifdef	CONFIG_PM
++
++static int devdrv_hcd_suspend(struct usb_hcd *hcd, u32 state, u32 level)
++{
++  return 0; /* no-op for now */
++}
++
++static int devdrv_hcd_resume(struct usb_hcd *hcd, u32 level)
++{
++  return 0; /* no-op for now */
++}
++
++#endif /* CONFIG_PM */
++
++
++
++/*************************************************************/
++/*************************************************************/
++/* Module block                                              */
++/*************************************************************/
++/*************************************************************/
++ 
++/* register driver */
++static int __init module_hcd_init(void) 
++{
++  
++  if (usb_disabled())
++    return -ENODEV;
++
++  /* Here we select enabled ports by following defines created from
++     menuconfig */
++#ifndef CONFIG_ETRAX_USB_HOST_PORT1
++  ports &= ~(1<<0);
++#endif
++#ifndef CONFIG_ETRAX_USB_HOST_PORT2
++  ports &= ~(1<<1);
++#endif
++
++  printk(KERN_INFO "%s version "VERSION" "COPYRIGHT"\n", product_desc);
++
++  devdrv_hc_platform_device =
++    platform_device_register_simple((char *) hc_name, 0, NULL, 0);
++
++  if (IS_ERR(devdrv_hc_platform_device))
++    return PTR_ERR(devdrv_hc_platform_device);
++  return driver_register(&devdrv_hc_device_driver);
++  /* 
++   * Note that we do not set the DMA mask for the device,
++   * i.e. we pretend that we will use PIO, since no specific
++   * allocation routines are needed for DMA buffers. This will
++   * cause the HCD buffer allocation routines to fall back to
++   * kmalloc().
++   */
++}
++
++/* unregister driver */
++static void __exit module_hcd_exit(void) 
++{	
++  driver_unregister(&devdrv_hc_device_driver);
++}
++
++
++/* Module hooks */
++module_init(module_hcd_init);
++module_exit(module_hcd_exit);
+diff -x .org -x .orig -x '.c*' -x '.h*' -x .git -x .git -urN clean-2.6.25-rc8/drivers/usb/host/hc-crisv10.h source-2.6.25-rc8/drivers/usb/host/hc-crisv10.h
+--- clean-2.6.25-rc8/drivers/usb/host/hc-crisv10.h	1970-01-01 01:00:00.000000000 +0100
++++ source-2.6.25-rc8/drivers/usb/host/hc-crisv10.h	2008-04-07 10:29:40.000000000 +0200
+@@ -0,0 +1,331 @@
++#ifndef __LINUX_ETRAX_USB_H
++#define __LINUX_ETRAX_USB_H
++
++#include <linux/types.h>
++#include <linux/list.h>
++
++struct USB_IN_Desc {
++  volatile __u16 sw_len;
++  volatile __u16 command;
++  volatile unsigned long next;
++  volatile unsigned long buf;
++  volatile __u16 hw_len;
++  volatile __u16 status;
++};
++
++struct USB_SB_Desc {
++  volatile __u16 sw_len;
++  volatile __u16 command;
++  volatile unsigned long next;
++  volatile unsigned long buf;
++};
++
++struct USB_EP_Desc {
++  volatile __u16 hw_len;
++  volatile __u16 command;
++  volatile unsigned long sub;
++  volatile unsigned long next;
++};
++
++
++/* Root Hub port status struct */
++struct crisv10_rh {
++  volatile __u16 wPortChange[2];
++  volatile __u16 wPortStatusPrev[2];
++};
++
++/* HCD description */
++struct crisv10_hcd {
++  spinlock_t		lock;
++  __u8			num_ports;
++  __u8                  running;
++};
++
++
++/* Endpoint HC private data description */
++struct crisv10_ep_priv {
++  int epid;
++};
++
++/* Additional software state info for a USB Controller epid */
++struct etrax_epid {
++  __u8 inuse;       /* !0 = setup in Etrax and used for a endpoint */
++  __u8 disabled;    /* !0 = Temporarly disabled to avoid resubmission */
++  __u8 type;        /* Setup as: PIPE_BULK, PIPE_CONTROL ... */
++  __u8 out_traffic; /* !0 = This epid is for out traffic */
++};
++
++/* Struct to hold information of scheduled later URB completion */
++struct urb_later_data {
++//  struct work_struct ws;
++  struct delayed_work ws;
++  struct usb_hcd *hcd;
++  struct urb *urb;
++  int urb_num;
++  int status;
++};
++
++
++typedef enum {
++  STARTED,
++  NOT_STARTED,
++  UNLINK,
++} crisv10_urb_state_t;
++
++
++struct crisv10_urb_priv {
++  /* Sequence number for this URB. Every new submited URB gets this from
++     a incrementing counter. Used when a URB is scheduled for later finish to
++     be sure that the intended URB hasn't already been completed (device
++     drivers has a tendency to reuse URBs once they are completed, causing us
++     to not be able to single old ones out only based on the URB pointer.) */
++  __u32 urb_num;
++
++  /* The first_sb field is used for freeing all SB descriptors belonging
++     to an urb. The corresponding ep descriptor's sub pointer cannot be
++     used for this since the DMA advances the sub pointer as it processes
++     the sb list. */
++  struct USB_SB_Desc *first_sb;
++
++  /* The last_sb field referes to the last SB descriptor that belongs to
++     this urb. This is important to know so we can free the SB descriptors
++     that ranges between first_sb and last_sb. */
++  struct USB_SB_Desc *last_sb;
++  
++  /* The rx_offset field is used in ctrl and bulk traffic to keep track
++     of the offset in the urb's transfer_buffer where incoming data should be
++     copied to. */
++  __u32 rx_offset;
++  
++  /* Counter used in isochronous transfers to keep track of the
++     number of packets received/transmitted.  */
++  __u32 isoc_packet_counter;
++
++  /* Flag that marks if this Isoc Out URB has finished it's transfer. Used
++     because several URBs can be finished before list is processed */
++  __u8  isoc_out_done;
++  
++  /* This field is used to pass information about the urb's current state
++     between the various interrupt handlers (thus marked volatile). */
++  volatile crisv10_urb_state_t urb_state;
++  
++  /* In Ctrl transfers consist of (at least) 3 packets: SETUP, IN and ZOUT.
++     When DMA8 sub-channel 2 has processed the SB list for this sequence we
++     get a interrupt. We also get a interrupt for In transfers and which
++     one of these interrupts that comes first depends of data size and device.
++     To be sure that we have got both interrupts before we complete the URB
++     we have these to flags that shows which part that has completed.
++     We can then check when we get one of the interrupts that if the other has
++     occured it's safe for us to complete the URB, otherwise we set appropriate
++     flag and do the completion when we get the other interrupt. */
++  volatile unsigned char ctrl_zout_done;
++  volatile unsigned char ctrl_rx_done;
++
++  /* Connection between the submitted urb and ETRAX epid number */
++  __u8 epid;
++  
++  /* The rx_data_list field is used for periodic traffic, to hold
++     received data for later processing in the the complete_urb functions,
++     where the data us copied to the urb's transfer_buffer. Basically, we
++     use this intermediate storage because we don't know when it's safe to
++     reuse the transfer_buffer (FIXME?). */
++  struct list_head rx_data_list;
++
++
++  /* The interval time rounded up to closest 2^N */
++  int interval;
++
++  /* Pool of EP descriptors needed if it's a INTR transfer.
++     Amount of EPs in pool correspons to how many INTR that should
++     be inserted in TxIntrEPList (max 128, defined by MAX_INTR_INTERVAL) */
++  struct USB_EP_Desc* intr_ep_pool[128];
++
++  /* The mount of EPs allocated for this INTR URB */
++  int intr_ep_pool_length;
++
++  /* Pointer to info struct if URB is scheduled to be finished later */
++  struct urb_later_data* later_data;
++};
++
++
++/* This struct is for passing data from the top half to the bottom half irq
++   handlers */
++struct crisv10_irq_reg {
++  struct usb_hcd* hcd;
++  __u32 r_usb_epid_attn;
++  __u8 r_usb_status;
++  __u16 r_usb_rh_port_status_1;
++  __u16 r_usb_rh_port_status_2;
++  __u32 r_usb_irq_mask_read;
++  __u32 r_usb_fm_number;
++  struct work_struct usb_bh;
++};
++
++
++/* This struct is for passing data from the isoc top half to the isoc bottom
++   half. */
++struct crisv10_isoc_complete_data {
++  struct usb_hcd *hcd;
++  struct urb *urb;
++  struct work_struct usb_bh;
++};
++
++/* Entry item for URB lists for each endpint */
++typedef struct urb_entry
++{
++	struct urb *urb;
++	struct list_head list;
++} urb_entry_t;
++
++/* ---------------------------------------------------------------------------
++   Virtual Root HUB
++   ------------------------------------------------------------------------- */
++/* destination of request */
++#define RH_INTERFACE               0x01
++#define RH_ENDPOINT                0x02
++#define RH_OTHER                   0x03
++
++#define RH_CLASS                   0x20
++#define RH_VENDOR                  0x40
++
++/* Requests: bRequest << 8 | bmRequestType */
++#define RH_GET_STATUS           0x0080
++#define RH_CLEAR_FEATURE        0x0100
++#define RH_SET_FEATURE          0x0300
++#define RH_SET_ADDRESS		0x0500
++#define RH_GET_DESCRIPTOR	0x0680
++#define RH_SET_DESCRIPTOR       0x0700
++#define RH_GET_CONFIGURATION	0x0880
++#define RH_SET_CONFIGURATION	0x0900
++#define RH_GET_STATE            0x0280
++#define RH_GET_INTERFACE        0x0A80
++#define RH_SET_INTERFACE        0x0B00
++#define RH_SYNC_FRAME           0x0C80
++/* Our Vendor Specific Request */
++#define RH_SET_EP               0x2000
++
++
++/* Hub port features */
++#define RH_PORT_CONNECTION         0x00
++#define RH_PORT_ENABLE             0x01
++#define RH_PORT_SUSPEND            0x02
++#define RH_PORT_OVER_CURRENT       0x03
++#define RH_PORT_RESET              0x04
++#define RH_PORT_POWER              0x08
++#define RH_PORT_LOW_SPEED          0x09
++#define RH_C_PORT_CONNECTION       0x10
++#define RH_C_PORT_ENABLE           0x11
++#define RH_C_PORT_SUSPEND          0x12
++#define RH_C_PORT_OVER_CURRENT     0x13
++#define RH_C_PORT_RESET            0x14
++
++/* Hub features */
++#define RH_C_HUB_LOCAL_POWER       0x00
++#define RH_C_HUB_OVER_CURRENT      0x01
++
++#define RH_DEVICE_REMOTE_WAKEUP    0x00
++#define RH_ENDPOINT_STALL          0x01
++
++/* Our Vendor Specific feature */
++#define RH_REMOVE_EP               0x00
++
++
++#define RH_ACK                     0x01
++#define RH_REQ_ERR                 -1
++#define RH_NACK                    0x00
++
++/* Field definitions for */
++
++#define USB_IN_command__eol__BITNR      0 /* command macros */
++#define USB_IN_command__eol__WIDTH      1
++#define USB_IN_command__eol__no         0
++#define USB_IN_command__eol__yes        1
++
++#define USB_IN_command__intr__BITNR     3
++#define USB_IN_command__intr__WIDTH     1
++#define USB_IN_command__intr__no        0
++#define USB_IN_command__intr__yes       1
++
++#define USB_IN_status__eop__BITNR       1 /* status macros. */
++#define USB_IN_status__eop__WIDTH       1
++#define USB_IN_status__eop__no          0
++#define USB_IN_status__eop__yes         1
++
++#define USB_IN_status__eot__BITNR       5
++#define USB_IN_status__eot__WIDTH       1
++#define USB_IN_status__eot__no          0
++#define USB_IN_status__eot__yes         1
++
++#define USB_IN_status__error__BITNR     6
++#define USB_IN_status__error__WIDTH     1
++#define USB_IN_status__error__no        0
++#define USB_IN_status__error__yes       1
++
++#define USB_IN_status__nodata__BITNR    7
++#define USB_IN_status__nodata__WIDTH    1
++#define USB_IN_status__nodata__no       0
++#define USB_IN_status__nodata__yes      1
++
++#define USB_IN_status__epid__BITNR      8
++#define USB_IN_status__epid__WIDTH      5
++
++#define USB_EP_command__eol__BITNR      0
++#define USB_EP_command__eol__WIDTH      1
++#define USB_EP_command__eol__no         0
++#define USB_EP_command__eol__yes        1
++
++#define USB_EP_command__eof__BITNR      1
++#define USB_EP_command__eof__WIDTH      1
++#define USB_EP_command__eof__no         0
++#define USB_EP_command__eof__yes        1
++
++#define USB_EP_command__intr__BITNR     3
++#define USB_EP_command__intr__WIDTH     1
++#define USB_EP_command__intr__no        0
++#define USB_EP_command__intr__yes       1
++
++#define USB_EP_command__enable__BITNR   4
++#define USB_EP_command__enable__WIDTH   1
++#define USB_EP_command__enable__no      0
++#define USB_EP_command__enable__yes     1
++
++#define USB_EP_command__hw_valid__BITNR 5
++#define USB_EP_command__hw_valid__WIDTH 1
++#define USB_EP_command__hw_valid__no    0
++#define USB_EP_command__hw_valid__yes   1
++
++#define USB_EP_command__epid__BITNR     8
++#define USB_EP_command__epid__WIDTH     5
++
++#define USB_SB_command__eol__BITNR      0 /* command macros. */
++#define USB_SB_command__eol__WIDTH      1
++#define USB_SB_command__eol__no         0
++#define USB_SB_command__eol__yes        1
++
++#define USB_SB_command__eot__BITNR      1
++#define USB_SB_command__eot__WIDTH      1
++#define USB_SB_command__eot__no         0
++#define USB_SB_command__eot__yes        1
++
++#define USB_SB_command__intr__BITNR     3
++#define USB_SB_command__intr__WIDTH     1
++#define USB_SB_command__intr__no        0
++#define USB_SB_command__intr__yes       1
++
++#define USB_SB_command__tt__BITNR       4
++#define USB_SB_command__tt__WIDTH       2
++#define USB_SB_command__tt__zout        0
++#define USB_SB_command__tt__in          1
++#define USB_SB_command__tt__out         2
++#define USB_SB_command__tt__setup       3
++
++
++#define USB_SB_command__rem__BITNR      8
++#define USB_SB_command__rem__WIDTH      6
++
++#define USB_SB_command__full__BITNR     6
++#define USB_SB_command__full__WIDTH     1
++#define USB_SB_command__full__no        0
++#define USB_SB_command__full__yes       1
++
++#endif