Merge tag 'v4.4-rc2' into drm-intel-next-queued

Linux 4.4-rc2

Backmerge to get at

commit 1b0e3a049efe471c399674fd954500ce97438d30
Author: Imre Deak <imre.deak@intel.com>
Date:   Thu Nov 5 23:04:11 2015 +0200

    drm/i915/skl: disable display side power well support for now

so that we can proplery re-eanble skl power wells in -next.

Conflicts are just adjacent lines changed, except for intel_fbdev.c
where we need to interleave the changs. Nothing nefarious.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

1 files changed, 0 insertions, 5894 deletions

diff --git a/drivers/usb/host/fusbh200-hcd.c b/drivers/usb/host/fusbh200-hcd.c
deleted file mode 100644
index 1fd8718a9f11..000000000000
--- a/drivers/usb/host/fusbh200-hcd.c
+++ /dev/null
@@ -1,5894 +0,0 @@
-/*
- * Faraday FUSBH200 EHCI-like driver
- *
- * Copyright (c) 2013 Faraday Technology Corporation
- *
- * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com>
- * 	   Feng-Hsin Chiang <john453@faraday-tech.com>
- * 	   Po-Yu Chuang <ratbert.chuang@gmail.com>
- *
- * Most of code borrowed from the Linux-3.7 EHCI driver
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/dmapool.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/vmalloc.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/hrtimer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/moduleparam.h>
-#include <linux/dma-mapping.h>
-#include <linux/debugfs.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/platform_device.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/unaligned.h>
-
-/*-------------------------------------------------------------------------*/
-#define DRIVER_AUTHOR "Yuan-Hsin Chen"
-#define DRIVER_DESC "FUSBH200 Host Controller (EHCI) Driver"
-
-static const char	hcd_name [] = "fusbh200_hcd";
-
-#undef FUSBH200_URB_TRACE
-
-/* magic numbers that can affect system performance */
-#define	FUSBH200_TUNE_CERR		3	/* 0-3 qtd retries; 0 == don't stop */
-#define	FUSBH200_TUNE_RL_HS		4	/* nak throttle; see 4.9 */
-#define	FUSBH200_TUNE_RL_TT		0
-#define	FUSBH200_TUNE_MULT_HS	1	/* 1-3 transactions/uframe; 4.10.3 */
-#define	FUSBH200_TUNE_MULT_TT	1
-/*
- * Some drivers think it's safe to schedule isochronous transfers more than
- * 256 ms into the future (partly as a result of an old bug in the scheduling
- * code).  In an attempt to avoid trouble, we will use a minimum scheduling
- * length of 512 frames instead of 256.
- */
-#define	FUSBH200_TUNE_FLS		1	/* (medium) 512-frame schedule */
-
-/* Initial IRQ latency:  faster than hw default */
-static int log2_irq_thresh = 0;		// 0 to 6
-module_param (log2_irq_thresh, int, S_IRUGO);
-MODULE_PARM_DESC (log2_irq_thresh, "log2 IRQ latency, 1-64 microframes");
-
-/* initial park setting:  slower than hw default */
-static unsigned park = 0;
-module_param (park, uint, S_IRUGO);
-MODULE_PARM_DESC (park, "park setting; 1-3 back-to-back async packets");
-
-/* for link power management(LPM) feature */
-static unsigned int hird;
-module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
-
-#define	INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
-
-#include "fusbh200.h"
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_dbg(fusbh200, fmt, args...) \
-	dev_dbg (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_err(fusbh200, fmt, args...) \
-	dev_err (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_info(fusbh200, fmt, args...) \
-	dev_info (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_warn(fusbh200, fmt, args...) \
-	dev_warn (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-
-/* check the values in the HCSPARAMS register
- * (host controller _Structural_ parameters)
- * see EHCI spec, Table 2-4 for each value
- */
-static void dbg_hcs_params (struct fusbh200_hcd *fusbh200, char *label)
-{
-	u32	params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-
-	fusbh200_dbg (fusbh200,
-		"%s hcs_params 0x%x ports=%d\n",
-		label, params,
-		HCS_N_PORTS (params)
-		);
-}
-
-/* check the values in the HCCPARAMS register
- * (host controller _Capability_ parameters)
- * see EHCI Spec, Table 2-5 for each value
- * */
-static void dbg_hcc_params (struct fusbh200_hcd *fusbh200, char *label)
-{
-	u32	params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
-	fusbh200_dbg (fusbh200,
-		"%s hcc_params %04x uframes %s%s\n",
-		label,
-		params,
-		HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
-		HCC_CANPARK(params) ? " park" : "");
-}
-
-static void __maybe_unused
-dbg_qtd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd)
-{
-	fusbh200_dbg(fusbh200, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
-		hc32_to_cpup(fusbh200, &qtd->hw_next),
-		hc32_to_cpup(fusbh200, &qtd->hw_alt_next),
-		hc32_to_cpup(fusbh200, &qtd->hw_token),
-		hc32_to_cpup(fusbh200, &qtd->hw_buf [0]));
-	if (qtd->hw_buf [1])
-		fusbh200_dbg(fusbh200, "  p1=%08x p2=%08x p3=%08x p4=%08x\n",
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[1]),
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[2]),
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[3]),
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[4]));
-}
-
-static void __maybe_unused
-dbg_qh (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qh_hw *hw = qh->hw;
-
-	fusbh200_dbg (fusbh200, "%s qh %p n%08x info %x %x qtd %x\n", label,
-		qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
-	dbg_qtd("overlay", fusbh200, (struct fusbh200_qtd *) &hw->hw_qtd_next);
-}
-
-static void __maybe_unused
-dbg_itd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd)
-{
-	fusbh200_dbg (fusbh200, "%s [%d] itd %p, next %08x, urb %p\n",
-		label, itd->frame, itd, hc32_to_cpu(fusbh200, itd->hw_next),
-		itd->urb);
-	fusbh200_dbg (fusbh200,
-		"  trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
-		hc32_to_cpu(fusbh200, itd->hw_transaction[0]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[1]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[2]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[3]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[4]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[5]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[6]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[7]));
-	fusbh200_dbg (fusbh200,
-		"  buf:   %08x %08x %08x %08x %08x %08x %08x\n",
-		hc32_to_cpu(fusbh200, itd->hw_bufp[0]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[1]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[2]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[3]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[4]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[5]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[6]));
-	fusbh200_dbg (fusbh200, "  index: %d %d %d %d %d %d %d %d\n",
-		itd->index[0], itd->index[1], itd->index[2],
-		itd->index[3], itd->index[4], itd->index[5],
-		itd->index[6], itd->index[7]);
-}
-
-static int __maybe_unused
-dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
-{
-	return scnprintf (buf, len,
-		"%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
-		label, label [0] ? " " : "", status,
-		(status & STS_ASS) ? " Async" : "",
-		(status & STS_PSS) ? " Periodic" : "",
-		(status & STS_RECL) ? " Recl" : "",
-		(status & STS_HALT) ? " Halt" : "",
-		(status & STS_IAA) ? " IAA" : "",
-		(status & STS_FATAL) ? " FATAL" : "",
-		(status & STS_FLR) ? " FLR" : "",
-		(status & STS_PCD) ? " PCD" : "",
-		(status & STS_ERR) ? " ERR" : "",
-		(status & STS_INT) ? " INT" : ""
-		);
-}
-
-static int __maybe_unused
-dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
-{
-	return scnprintf (buf, len,
-		"%s%sintrenable %02x%s%s%s%s%s%s",
-		label, label [0] ? " " : "", enable,
-		(enable & STS_IAA) ? " IAA" : "",
-		(enable & STS_FATAL) ? " FATAL" : "",
-		(enable & STS_FLR) ? " FLR" : "",
-		(enable & STS_PCD) ? " PCD" : "",
-		(enable & STS_ERR) ? " ERR" : "",
-		(enable & STS_INT) ? " INT" : ""
-		);
-}
-
-static const char *const fls_strings [] =
-    { "1024", "512", "256", "??" };
-
-static int
-dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
-{
-	return scnprintf (buf, len,
-		"%s%scommand %07x %s=%d ithresh=%d%s%s%s "
-		"period=%s%s %s",
-		label, label [0] ? " " : "", command,
-		(command & CMD_PARK) ? " park" : "(park)",
-		CMD_PARK_CNT (command),
-		(command >> 16) & 0x3f,
-		(command & CMD_IAAD) ? " IAAD" : "",
-		(command & CMD_ASE) ? " Async" : "",
-		(command & CMD_PSE) ? " Periodic" : "",
-		fls_strings [(command >> 2) & 0x3],
-		(command & CMD_RESET) ? " Reset" : "",
-		(command & CMD_RUN) ? "RUN" : "HALT"
-		);
-}
-
-static int
-dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
-{
-	char	*sig;
-
-	/* signaling state */
-	switch (status & (3 << 10)) {
-	case 0 << 10: sig = "se0"; break;
-	case 1 << 10: sig = "k"; break;		/* low speed */
-	case 2 << 10: sig = "j"; break;
-	default: sig = "?"; break;
-	}
-
-	return scnprintf (buf, len,
-		"%s%sport:%d status %06x %d "
-		"sig=%s%s%s%s%s%s%s%s",
-		label, label [0] ? " " : "", port, status,
-		status>>25,/*device address */
-		sig,
-		(status & PORT_RESET) ? " RESET" : "",
-		(status & PORT_SUSPEND) ? " SUSPEND" : "",
-		(status & PORT_RESUME) ? " RESUME" : "",
-		(status & PORT_PEC) ? " PEC" : "",
-		(status & PORT_PE) ? " PE" : "",
-		(status & PORT_CSC) ? " CSC" : "",
-		(status & PORT_CONNECT) ? " CONNECT" : "");
-}
-
-/* functions have the "wrong" filename when they're output... */
-#define dbg_status(fusbh200, label, status) { \
-	char _buf [80]; \
-	dbg_status_buf (_buf, sizeof _buf, label, status); \
-	fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-#define dbg_cmd(fusbh200, label, command) { \
-	char _buf [80]; \
-	dbg_command_buf (_buf, sizeof _buf, label, command); \
-	fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-#define dbg_port(fusbh200, label, port, status) { \
-	char _buf [80]; \
-	dbg_port_buf (_buf, sizeof _buf, label, port, status); \
-	fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* troubleshooting help: expose state in debugfs */
-
-static int debug_async_open(struct inode *, struct file *);
-static int debug_periodic_open(struct inode *, struct file *);
-static int debug_registers_open(struct inode *, struct file *);
-static int debug_async_open(struct inode *, struct file *);
-
-static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*);
-static int debug_close(struct inode *, struct file *);
-
-static const struct file_operations debug_async_fops = {
-	.owner		= THIS_MODULE,
-	.open		= debug_async_open,
-	.read		= debug_output,
-	.release	= debug_close,
-	.llseek		= default_llseek,
-};
-static const struct file_operations debug_periodic_fops = {
-	.owner		= THIS_MODULE,
-	.open		= debug_periodic_open,
-	.read		= debug_output,
-	.release	= debug_close,
-	.llseek		= default_llseek,
-};
-static const struct file_operations debug_registers_fops = {
-	.owner		= THIS_MODULE,
-	.open		= debug_registers_open,
-	.read		= debug_output,
-	.release	= debug_close,
-	.llseek		= default_llseek,
-};
-
-static struct dentry *fusbh200_debug_root;
-
-struct debug_buffer {
-	ssize_t (*fill_func)(struct debug_buffer *);	/* fill method */
-	struct usb_bus *bus;
-	struct mutex mutex;	/* protect filling of buffer */
-	size_t count;		/* number of characters filled into buffer */
-	char *output_buf;
-	size_t alloc_size;
-};
-
-#define speed_char(info1) ({ char tmp; \
-		switch (info1 & (3 << 12)) { \
-		case QH_FULL_SPEED: tmp = 'f'; break; \
-		case QH_LOW_SPEED:  tmp = 'l'; break; \
-		case QH_HIGH_SPEED: tmp = 'h'; break; \
-		default: tmp = '?'; break; \
-		} tmp; })
-
-static inline char token_mark(struct fusbh200_hcd *fusbh200, __hc32 token)
-{
-	__u32 v = hc32_to_cpu(fusbh200, token);
-
-	if (v & QTD_STS_ACTIVE)
-		return '*';
-	if (v & QTD_STS_HALT)
-		return '-';
-	if (!IS_SHORT_READ (v))
-		return ' ';
-	/* tries to advance through hw_alt_next */
-	return '/';
-}
-
-static void qh_lines (
-	struct fusbh200_hcd *fusbh200,
-	struct fusbh200_qh *qh,
-	char **nextp,
-	unsigned *sizep
-)
-{
-	u32			scratch;
-	u32			hw_curr;
-	struct fusbh200_qtd		*td;
-	unsigned		temp;
-	unsigned		size = *sizep;
-	char			*next = *nextp;
-	char			mark;
-	__le32			list_end = FUSBH200_LIST_END(fusbh200);
-	struct fusbh200_qh_hw	*hw = qh->hw;
-
-	if (hw->hw_qtd_next == list_end)	/* NEC does this */
-		mark = '@';
-	else
-		mark = token_mark(fusbh200, hw->hw_token);
-	if (mark == '/') {	/* qh_alt_next controls qh advance? */
-		if ((hw->hw_alt_next & QTD_MASK(fusbh200))
-				== fusbh200->async->hw->hw_alt_next)
-			mark = '#';	/* blocked */
-		else if (hw->hw_alt_next == list_end)
-			mark = '.';	/* use hw_qtd_next */
-		/* else alt_next points to some other qtd */
-	}
-	scratch = hc32_to_cpup(fusbh200, &hw->hw_info1);
-	hw_curr = (mark == '*') ? hc32_to_cpup(fusbh200, &hw->hw_current) : 0;
-	temp = scnprintf (next, size,
-			"qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
-			qh, scratch & 0x007f,
-			speed_char (scratch),
-			(scratch >> 8) & 0x000f,
-			scratch, hc32_to_cpup(fusbh200, &hw->hw_info2),
-			hc32_to_cpup(fusbh200, &hw->hw_token), mark,
-			(cpu_to_hc32(fusbh200, QTD_TOGGLE) & hw->hw_token)
-				? "data1" : "data0",
-			(hc32_to_cpup(fusbh200, &hw->hw_alt_next) >> 1) & 0x0f);
-	size -= temp;
-	next += temp;
-
-	/* hc may be modifying the list as we read it ... */
-	list_for_each_entry(td, &qh->qtd_list, qtd_list) {
-		scratch = hc32_to_cpup(fusbh200, &td->hw_token);
-		mark = ' ';
-		if (hw_curr == td->qtd_dma)
-			mark = '*';
-		else if (hw->hw_qtd_next == cpu_to_hc32(fusbh200, td->qtd_dma))
-			mark = '+';
-		else if (QTD_LENGTH (scratch)) {
-			if (td->hw_alt_next == fusbh200->async->hw->hw_alt_next)
-				mark = '#';
-			else if (td->hw_alt_next != list_end)
-				mark = '/';
-		}
-		temp = snprintf (next, size,
-				"\n\t%p%c%s len=%d %08x urb %p",
-				td, mark, ({ char *tmp;
-				 switch ((scratch>>8)&0x03) {
-				 case 0: tmp = "out"; break;
-				 case 1: tmp = "in"; break;
-				 case 2: tmp = "setup"; break;
-				 default: tmp = "?"; break;
-				 } tmp;}),
-				(scratch >> 16) & 0x7fff,
-				scratch,
-				td->urb);
-		if (size < temp)
-			temp = size;
-		size -= temp;
-		next += temp;
-		if (temp == size)
-			goto done;
-	}
-
-	temp = snprintf (next, size, "\n");
-	if (size < temp)
-		temp = size;
-	size -= temp;
-	next += temp;
-
-done:
-	*sizep = size;
-	*nextp = next;
-}
-
-static ssize_t fill_async_buffer(struct debug_buffer *buf)
-{
-	struct usb_hcd		*hcd;
-	struct fusbh200_hcd	*fusbh200;
-	unsigned long		flags;
-	unsigned		temp, size;
-	char			*next;
-	struct fusbh200_qh		*qh;
-
-	hcd = bus_to_hcd(buf->bus);
-	fusbh200 = hcd_to_fusbh200 (hcd);
-	next = buf->output_buf;
-	size = buf->alloc_size;
-
-	*next = 0;
-
-	/* dumps a snapshot of the async schedule.
-	 * usually empty except for long-term bulk reads, or head.
-	 * one QH per line, and TDs we know about
-	 */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	for (qh = fusbh200->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
-		qh_lines (fusbh200, qh, &next, &size);
-	if (fusbh200->async_unlink && size > 0) {
-		temp = scnprintf(next, size, "\nunlink =\n");
-		size -= temp;
-		next += temp;
-
-		for (qh = fusbh200->async_unlink; size > 0 && qh;
-				qh = qh->unlink_next)
-			qh_lines (fusbh200, qh, &next, &size);
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-
-	return strlen(buf->output_buf);
-}
-
-#define DBG_SCHED_LIMIT 64
-static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
-{
-	struct usb_hcd		*hcd;
-	struct fusbh200_hcd		*fusbh200;
-	unsigned long		flags;
-	union fusbh200_shadow	p, *seen;
-	unsigned		temp, size, seen_count;
-	char			*next;
-	unsigned		i;
-	__hc32			tag;
-
-	seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC);
-	if (!seen)
-		return 0;
-	seen_count = 0;
-
-	hcd = bus_to_hcd(buf->bus);
-	fusbh200 = hcd_to_fusbh200 (hcd);
-	next = buf->output_buf;
-	size = buf->alloc_size;
-
-	temp = scnprintf (next, size, "size = %d\n", fusbh200->periodic_size);
-	size -= temp;
-	next += temp;
-
-	/* dump a snapshot of the periodic schedule.
-	 * iso changes, interrupt usually doesn't.
-	 */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	for (i = 0; i < fusbh200->periodic_size; i++) {
-		p = fusbh200->pshadow [i];
-		if (likely (!p.ptr))
-			continue;
-		tag = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [i]);
-
-		temp = scnprintf (next, size, "%4d: ", i);
-		size -= temp;
-		next += temp;
-
-		do {
-			struct fusbh200_qh_hw *hw;
-
-			switch (hc32_to_cpu(fusbh200, tag)) {
-			case Q_TYPE_QH:
-				hw = p.qh->hw;
-				temp = scnprintf (next, size, " qh%d-%04x/%p",
-						p.qh->period,
-						hc32_to_cpup(fusbh200,
-							&hw->hw_info2)
-							/* uframe masks */
-							& (QH_CMASK | QH_SMASK),
-						p.qh);
-				size -= temp;
-				next += temp;
-				/* don't repeat what follows this qh */
-				for (temp = 0; temp < seen_count; temp++) {
-					if (seen [temp].ptr != p.ptr)
-						continue;
-					if (p.qh->qh_next.ptr) {
-						temp = scnprintf (next, size,
-							" ...");
-						size -= temp;
-						next += temp;
-					}
-					break;
-				}
-				/* show more info the first time around */
-				if (temp == seen_count) {
-					u32	scratch = hc32_to_cpup(fusbh200,
-							&hw->hw_info1);
-					struct fusbh200_qtd	*qtd;
-					char		*type = "";
-
-					/* count tds, get ep direction */
-					temp = 0;
-					list_for_each_entry (qtd,
-							&p.qh->qtd_list,
-							qtd_list) {
-						temp++;
-						switch (0x03 & (hc32_to_cpu(
-							fusbh200,
-							qtd->hw_token) >> 8)) {
-						case 0: type = "out"; continue;
-						case 1: type = "in"; continue;
-						}
-					}
-
-					temp = scnprintf (next, size,
-						" (%c%d ep%d%s "
-						"[%d/%d] q%d p%d)",
-						speed_char (scratch),
-						scratch & 0x007f,
-						(scratch >> 8) & 0x000f, type,
-						p.qh->usecs, p.qh->c_usecs,
-						temp,
-						0x7ff & (scratch >> 16));
-
-					if (seen_count < DBG_SCHED_LIMIT)
-						seen [seen_count++].qh = p.qh;
-				} else
-					temp = 0;
-				tag = Q_NEXT_TYPE(fusbh200, hw->hw_next);
-				p = p.qh->qh_next;
-				break;
-			case Q_TYPE_FSTN:
-				temp = scnprintf (next, size,
-					" fstn-%8x/%p", p.fstn->hw_prev,
-					p.fstn);
-				tag = Q_NEXT_TYPE(fusbh200, p.fstn->hw_next);
-				p = p.fstn->fstn_next;
-				break;
-			case Q_TYPE_ITD:
-				temp = scnprintf (next, size,
-					" itd/%p", p.itd);
-				tag = Q_NEXT_TYPE(fusbh200, p.itd->hw_next);
-				p = p.itd->itd_next;
-				break;
-			}
-			size -= temp;
-			next += temp;
-		} while (p.ptr);
-
-		temp = scnprintf (next, size, "\n");
-		size -= temp;
-		next += temp;
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	kfree (seen);
-
-	return buf->alloc_size - size;
-}
-#undef DBG_SCHED_LIMIT
-
-static const char *rh_state_string(struct fusbh200_hcd *fusbh200)
-{
-	switch (fusbh200->rh_state) {
-	case FUSBH200_RH_HALTED:
-		return "halted";
-	case FUSBH200_RH_SUSPENDED:
-		return "suspended";
-	case FUSBH200_RH_RUNNING:
-		return "running";
-	case FUSBH200_RH_STOPPING:
-		return "stopping";
-	}
-	return "?";
-}
-
-static ssize_t fill_registers_buffer(struct debug_buffer *buf)
-{
-	struct usb_hcd		*hcd;
-	struct fusbh200_hcd	*fusbh200;
-	unsigned long		flags;
-	unsigned		temp, size, i;
-	char			*next, scratch [80];
-	static char		fmt [] = "%*s\n";
-	static char		label [] = "";
-
-	hcd = bus_to_hcd(buf->bus);
-	fusbh200 = hcd_to_fusbh200 (hcd);
-	next = buf->output_buf;
-	size = buf->alloc_size;
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	if (!HCD_HW_ACCESSIBLE(hcd)) {
-		size = scnprintf (next, size,
-			"bus %s, device %s\n"
-			"%s\n"
-			"SUSPENDED (no register access)\n",
-			hcd->self.controller->bus->name,
-			dev_name(hcd->self.controller),
-			hcd->product_desc);
-		goto done;
-	}
-
-	/* Capability Registers */
-	i = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
-	temp = scnprintf (next, size,
-		"bus %s, device %s\n"
-		"%s\n"
-		"EHCI %x.%02x, rh state %s\n",
-		hcd->self.controller->bus->name,
-		dev_name(hcd->self.controller),
-		hcd->product_desc,
-		i >> 8, i & 0x0ff, rh_state_string(fusbh200));
-	size -= temp;
-	next += temp;
-
-	// FIXME interpret both types of params
-	i = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-	temp = scnprintf (next, size, "structural params 0x%08x\n", i);
-	size -= temp;
-	next += temp;
-
-	i = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-	temp = scnprintf (next, size, "capability params 0x%08x\n", i);
-	size -= temp;
-	next += temp;
-
-	/* Operational Registers */
-	temp = dbg_status_buf (scratch, sizeof scratch, label,
-			fusbh200_readl(fusbh200, &fusbh200->regs->status));
-	temp = scnprintf (next, size, fmt, temp, scratch);
-	size -= temp;
-	next += temp;
-
-	temp = dbg_command_buf (scratch, sizeof scratch, label,
-			fusbh200_readl(fusbh200, &fusbh200->regs->command));
-	temp = scnprintf (next, size, fmt, temp, scratch);
-	size -= temp;
-	next += temp;
-
-	temp = dbg_intr_buf (scratch, sizeof scratch, label,
-			fusbh200_readl(fusbh200, &fusbh200->regs->intr_enable));
-	temp = scnprintf (next, size, fmt, temp, scratch);
-	size -= temp;
-	next += temp;
-
-	temp = scnprintf (next, size, "uframe %04x\n",
-			fusbh200_read_frame_index(fusbh200));
-	size -= temp;
-	next += temp;
-
-	if (fusbh200->async_unlink) {
-		temp = scnprintf(next, size, "async unlink qh %p\n",
-				fusbh200->async_unlink);
-		size -= temp;
-		next += temp;
-	}
-
-	temp = scnprintf (next, size,
-		"irq normal %ld err %ld iaa %ld (lost %ld)\n",
-		fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa,
-		fusbh200->stats.lost_iaa);
-	size -= temp;
-	next += temp;
-
-	temp = scnprintf (next, size, "complete %ld unlink %ld\n",
-		fusbh200->stats.complete, fusbh200->stats.unlink);
-	size -= temp;
-	next += temp;
-
-done:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-
-	return buf->alloc_size - size;
-}
-
-static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
-				ssize_t (*fill_func)(struct debug_buffer *))
-{
-	struct debug_buffer *buf;
-
-	buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
-
-	if (buf) {
-		buf->bus = bus;
-		buf->fill_func = fill_func;
-		mutex_init(&buf->mutex);
-		buf->alloc_size = PAGE_SIZE;
-	}
-
-	return buf;
-}
-
-static int fill_buffer(struct debug_buffer *buf)
-{
-	int ret = 0;
-
-	if (!buf->output_buf)
-		buf->output_buf = vmalloc(buf->alloc_size);
-
-	if (!buf->output_buf) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	ret = buf->fill_func(buf);
-
-	if (ret >= 0) {
-		buf->count = ret;
-		ret = 0;
-	}
-
-out:
-	return ret;
-}
-
-static ssize_t debug_output(struct file *file, char __user *user_buf,
-			    size_t len, loff_t *offset)
-{
-	struct debug_buffer *buf = file->private_data;
-	int ret = 0;
-
-	mutex_lock(&buf->mutex);
-	if (buf->count == 0) {
-		ret = fill_buffer(buf);
-		if (ret != 0) {
-			mutex_unlock(&buf->mutex);
-			goto out;
-		}
-	}
-	mutex_unlock(&buf->mutex);
-
-	ret = simple_read_from_buffer(user_buf, len, offset,
-				      buf->output_buf, buf->count);
-
-out:
-	return ret;
-
-}
-
-static int debug_close(struct inode *inode, struct file *file)
-{
-	struct debug_buffer *buf = file->private_data;
-
-	if (buf) {
-		vfree(buf->output_buf);
-		kfree(buf);
-	}
-
-	return 0;
-}
-static int debug_async_open(struct inode *inode, struct file *file)
-{
-	file->private_data = alloc_buffer(inode->i_private, fill_async_buffer);
-
-	return file->private_data ? 0 : -ENOMEM;
-}
-
-static int debug_periodic_open(struct inode *inode, struct file *file)
-{
-	struct debug_buffer *buf;
-	buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
-	if (!buf)
-		return -ENOMEM;
-
-	buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE;
-	file->private_data = buf;
-	return 0;
-}
-
-static int debug_registers_open(struct inode *inode, struct file *file)
-{
-	file->private_data = alloc_buffer(inode->i_private,
-					  fill_registers_buffer);
-
-	return file->private_data ? 0 : -ENOMEM;
-}
-
-static inline void create_debug_files (struct fusbh200_hcd *fusbh200)
-{
-	struct usb_bus *bus = &fusbh200_to_hcd(fusbh200)->self;
-
-	fusbh200->debug_dir = debugfs_create_dir(bus->bus_name, fusbh200_debug_root);
-	if (!fusbh200->debug_dir)
-		return;
-
-	if (!debugfs_create_file("async", S_IRUGO, fusbh200->debug_dir, bus,
-						&debug_async_fops))
-		goto file_error;
-
-	if (!debugfs_create_file("periodic", S_IRUGO, fusbh200->debug_dir, bus,
-						&debug_periodic_fops))
-		goto file_error;
-
-	if (!debugfs_create_file("registers", S_IRUGO, fusbh200->debug_dir, bus,
-						    &debug_registers_fops))
-		goto file_error;
-
-	return;
-
-file_error:
-	debugfs_remove_recursive(fusbh200->debug_dir);
-}
-
-static inline void remove_debug_files (struct fusbh200_hcd *fusbh200)
-{
-	debugfs_remove_recursive(fusbh200->debug_dir);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * handshake - spin reading hc until handshake completes or fails
- * @ptr: address of hc register to be read
- * @mask: bits to look at in result of read
- * @done: value of those bits when handshake succeeds
- * @usec: timeout in microseconds
- *
- * Returns negative errno, or zero on success
- *
- * Success happens when the "mask" bits have the specified value (hardware
- * handshake done).  There are two failure modes:  "usec" have passed (major
- * hardware flakeout), or the register reads as all-ones (hardware removed).
- *
- * That last failure should_only happen in cases like physical cardbus eject
- * before driver shutdown. But it also seems to be caused by bugs in cardbus
- * bridge shutdown:  shutting down the bridge before the devices using it.
- */
-static int handshake (struct fusbh200_hcd *fusbh200, void __iomem *ptr,
-		      u32 mask, u32 done, int usec)
-{
-	u32	result;
-
-	do {
-		result = fusbh200_readl(fusbh200, ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay (1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
-}
-
-/*
- * Force HC to halt state from unknown (EHCI spec section 2.3).
- * Must be called with interrupts enabled and the lock not held.
- */
-static int fusbh200_halt (struct fusbh200_hcd *fusbh200)
-{
-	u32	temp;
-
-	spin_lock_irq(&fusbh200->lock);
-
-	/* disable any irqs left enabled by previous code */
-	fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-
-	/*
-	 * This routine gets called during probe before fusbh200->command
-	 * has been initialized, so we can't rely on its value.
-	 */
-	fusbh200->command &= ~CMD_RUN;
-	temp = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-	temp &= ~(CMD_RUN | CMD_IAAD);
-	fusbh200_writel(fusbh200, temp, &fusbh200->regs->command);
-
-	spin_unlock_irq(&fusbh200->lock);
-	synchronize_irq(fusbh200_to_hcd(fusbh200)->irq);
-
-	return handshake(fusbh200, &fusbh200->regs->status,
-			  STS_HALT, STS_HALT, 16 * 125);
-}
-
-/*
- * Reset a non-running (STS_HALT == 1) controller.
- * Must be called with interrupts enabled and the lock not held.
- */
-static int fusbh200_reset (struct fusbh200_hcd *fusbh200)
-{
-	int	retval;
-	u32	command = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-
-	/* If the EHCI debug controller is active, special care must be
-	 * taken before and after a host controller reset */
-	if (fusbh200->debug && !dbgp_reset_prep(fusbh200_to_hcd(fusbh200)))
-		fusbh200->debug = NULL;
-
-	command |= CMD_RESET;
-	dbg_cmd (fusbh200, "reset", command);
-	fusbh200_writel(fusbh200, command, &fusbh200->regs->command);
-	fusbh200->rh_state = FUSBH200_RH_HALTED;
-	fusbh200->next_statechange = jiffies;
-	retval = handshake (fusbh200, &fusbh200->regs->command,
-			    CMD_RESET, 0, 250 * 1000);
-
-	if (retval)
-		return retval;
-
-	if (fusbh200->debug)
-		dbgp_external_startup(fusbh200_to_hcd(fusbh200));
-
-	fusbh200->port_c_suspend = fusbh200->suspended_ports =
-			fusbh200->resuming_ports = 0;
-	return retval;
-}
-
-/*
- * Idle the controller (turn off the schedules).
- * Must be called with interrupts enabled and the lock not held.
- */
-static void fusbh200_quiesce (struct fusbh200_hcd *fusbh200)
-{
-	u32	temp;
-
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	/* wait for any schedule enables/disables to take effect */
-	temp = (fusbh200->command << 10) & (STS_ASS | STS_PSS);
-	handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, temp, 16 * 125);
-
-	/* then disable anything that's still active */
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->command &= ~(CMD_ASE | CMD_PSE);
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-	spin_unlock_irq(&fusbh200->lock);
-
-	/* hardware can take 16 microframes to turn off ... */
-	handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, 0, 16 * 125);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void end_unlink_async(struct fusbh200_hcd *fusbh200);
-static void unlink_empty_async(struct fusbh200_hcd *fusbh200);
-static void fusbh200_work(struct fusbh200_hcd *fusbh200);
-static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-/*-------------------------------------------------------------------------*/
-
-/* Set a bit in the USBCMD register */
-static void fusbh200_set_command_bit(struct fusbh200_hcd *fusbh200, u32 bit)
-{
-	fusbh200->command |= bit;
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-
-	/* unblock posted write */
-	fusbh200_readl(fusbh200, &fusbh200->regs->command);
-}
-
-/* Clear a bit in the USBCMD register */
-static void fusbh200_clear_command_bit(struct fusbh200_hcd *fusbh200, u32 bit)
-{
-	fusbh200->command &= ~bit;
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-
-	/* unblock posted write */
-	fusbh200_readl(fusbh200, &fusbh200->regs->command);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI timer support...  Now using hrtimers.
- *
- * Lots of different events are triggered from fusbh200->hrtimer.  Whenever
- * the timer routine runs, it checks each possible event; events that are
- * currently enabled and whose expiration time has passed get handled.
- * The set of enabled events is stored as a collection of bitflags in
- * fusbh200->enabled_hrtimer_events, and they are numbered in order of
- * increasing delay values (ranging between 1 ms and 100 ms).
- *
- * Rather than implementing a sorted list or tree of all pending events,
- * we keep track only of the lowest-numbered pending event, in
- * fusbh200->next_hrtimer_event.  Whenever fusbh200->hrtimer gets restarted, its
- * expiration time is set to the timeout value for this event.
- *
- * As a result, events might not get handled right away; the actual delay
- * could be anywhere up to twice the requested delay.  This doesn't
- * matter, because none of the events are especially time-critical.  The
- * ones that matter most all have a delay of 1 ms, so they will be
- * handled after 2 ms at most, which is okay.  In addition to this, we
- * allow for an expiration range of 1 ms.
- */
-
-/*
- * Delay lengths for the hrtimer event types.
- * Keep this list sorted by delay length, in the same order as
- * the event types indexed by enum fusbh200_hrtimer_event in fusbh200.h.
- */
-static unsigned event_delays_ns[] = {
-	1 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_POLL_ASS */
-	1 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_POLL_PSS */
-	1 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_POLL_DEAD */
-	1125 * NSEC_PER_USEC,	/* FUSBH200_HRTIMER_UNLINK_INTR */
-	2 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_FREE_ITDS */
-	6 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_ASYNC_UNLINKS */
-	10 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_IAA_WATCHDOG */
-	10 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_DISABLE_PERIODIC */
-	15 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_DISABLE_ASYNC */
-	100 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_IO_WATCHDOG */
-};
-
-/* Enable a pending hrtimer event */
-static void fusbh200_enable_event(struct fusbh200_hcd *fusbh200, unsigned event,
-		bool resched)
-{
-	ktime_t		*timeout = &fusbh200->hr_timeouts[event];
-
-	if (resched)
-		*timeout = ktime_add(ktime_get(),
-				ktime_set(0, event_delays_ns[event]));
-	fusbh200->enabled_hrtimer_events |= (1 << event);
-
-	/* Track only the lowest-numbered pending event */
-	if (event < fusbh200->next_hrtimer_event) {
-		fusbh200->next_hrtimer_event = event;
-		hrtimer_start_range_ns(&fusbh200->hrtimer, *timeout,
-				NSEC_PER_MSEC, HRTIMER_MODE_ABS);
-	}
-}
-
-
-/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
-static void fusbh200_poll_ASS(struct fusbh200_hcd *fusbh200)
-{
-	unsigned	actual, want;
-
-	/* Don't enable anything if the controller isn't running (e.g., died) */
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	want = (fusbh200->command & CMD_ASE) ? STS_ASS : 0;
-	actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_ASS;
-
-	if (want != actual) {
-
-		/* Poll again later, but give up after about 20 ms */
-		if (fusbh200->ASS_poll_count++ < 20) {
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_ASS, true);
-			return;
-		}
-		fusbh200_dbg(fusbh200, "Waited too long for the async schedule status (%x/%x), giving up\n",
-				want, actual);
-	}
-	fusbh200->ASS_poll_count = 0;
-
-	/* The status is up-to-date; restart or stop the schedule as needed */
-	if (want == 0) {	/* Stopped */
-		if (fusbh200->async_count > 0)
-			fusbh200_set_command_bit(fusbh200, CMD_ASE);
-
-	} else {		/* Running */
-		if (fusbh200->async_count == 0) {
-
-			/* Turn off the schedule after a while */
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_ASYNC,
-					true);
-		}
-	}
-}
-
-/* Turn off the async schedule after a brief delay */
-static void fusbh200_disable_ASE(struct fusbh200_hcd *fusbh200)
-{
-	fusbh200_clear_command_bit(fusbh200, CMD_ASE);
-}
-
-
-/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
-static void fusbh200_poll_PSS(struct fusbh200_hcd *fusbh200)
-{
-	unsigned	actual, want;
-
-	/* Don't do anything if the controller isn't running (e.g., died) */
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	want = (fusbh200->command & CMD_PSE) ? STS_PSS : 0;
-	actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_PSS;
-
-	if (want != actual) {
-
-		/* Poll again later, but give up after about 20 ms */
-		if (fusbh200->PSS_poll_count++ < 20) {
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_PSS, true);
-			return;
-		}
-		fusbh200_dbg(fusbh200, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
-				want, actual);
-	}
-	fusbh200->PSS_poll_count = 0;
-
-	/* The status is up-to-date; restart or stop the schedule as needed */
-	if (want == 0) {	/* Stopped */
-		if (fusbh200->periodic_count > 0)
-			fusbh200_set_command_bit(fusbh200, CMD_PSE);
-
-	} else {		/* Running */
-		if (fusbh200->periodic_count == 0) {
-
-			/* Turn off the schedule after a while */
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_PERIODIC,
-					true);
-		}
-	}
-}
-
-/* Turn off the periodic schedule after a brief delay */
-static void fusbh200_disable_PSE(struct fusbh200_hcd *fusbh200)
-{
-	fusbh200_clear_command_bit(fusbh200, CMD_PSE);
-}
-
-
-/* Poll the STS_HALT status bit; see when a dead controller stops */
-static void fusbh200_handle_controller_death(struct fusbh200_hcd *fusbh200)
-{
-	if (!(fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_HALT)) {
-
-		/* Give up after a few milliseconds */
-		if (fusbh200->died_poll_count++ < 5) {
-			/* Try again later */
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_DEAD, true);
-			return;
-		}
-		fusbh200_warn(fusbh200, "Waited too long for the controller to stop, giving up\n");
-	}
-
-	/* Clean up the mess */
-	fusbh200->rh_state = FUSBH200_RH_HALTED;
-	fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-	fusbh200_work(fusbh200);
-	end_unlink_async(fusbh200);
-
-	/* Not in process context, so don't try to reset the controller */
-}
-
-
-/* Handle unlinked interrupt QHs once they are gone from the hardware */
-static void fusbh200_handle_intr_unlinks(struct fusbh200_hcd *fusbh200)
-{
-	bool		stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING);
-
-	/*
-	 * Process all the QHs on the intr_unlink list that were added
-	 * before the current unlink cycle began.  The list is in
-	 * temporal order, so stop when we reach the first entry in the
-	 * current cycle.  But if the root hub isn't running then
-	 * process all the QHs on the list.
-	 */
-	fusbh200->intr_unlinking = true;
-	while (fusbh200->intr_unlink) {
-		struct fusbh200_qh	*qh = fusbh200->intr_unlink;
-
-		if (!stopped && qh->unlink_cycle == fusbh200->intr_unlink_cycle)
-			break;
-		fusbh200->intr_unlink = qh->unlink_next;
-		qh->unlink_next = NULL;
-		end_unlink_intr(fusbh200, qh);
-	}
-
-	/* Handle remaining entries later */
-	if (fusbh200->intr_unlink) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true);
-		++fusbh200->intr_unlink_cycle;
-	}
-	fusbh200->intr_unlinking = false;
-}
-
-
-/* Start another free-iTDs/siTDs cycle */
-static void start_free_itds(struct fusbh200_hcd *fusbh200)
-{
-	if (!(fusbh200->enabled_hrtimer_events & BIT(FUSBH200_HRTIMER_FREE_ITDS))) {
-		fusbh200->last_itd_to_free = list_entry(
-				fusbh200->cached_itd_list.prev,
-				struct fusbh200_itd, itd_list);
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_FREE_ITDS, true);
-	}
-}
-
-/* Wait for controller to stop using old iTDs and siTDs */
-static void end_free_itds(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_itd		*itd, *n;
-
-	if (fusbh200->rh_state < FUSBH200_RH_RUNNING) {
-		fusbh200->last_itd_to_free = NULL;
-	}
-
-	list_for_each_entry_safe(itd, n, &fusbh200->cached_itd_list, itd_list) {
-		list_del(&itd->itd_list);
-		dma_pool_free(fusbh200->itd_pool, itd, itd->itd_dma);
-		if (itd == fusbh200->last_itd_to_free)
-			break;
-	}
-
-	if (!list_empty(&fusbh200->cached_itd_list))
-		start_free_itds(fusbh200);
-}
-
-
-/* Handle lost (or very late) IAA interrupts */
-static void fusbh200_iaa_watchdog(struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	/*
-	 * Lost IAA irqs wedge things badly; seen first with a vt8235.
-	 * So we need this watchdog, but must protect it against both
-	 * (a) SMP races against real IAA firing and retriggering, and
-	 * (b) clean HC shutdown, when IAA watchdog was pending.
-	 */
-	if (fusbh200->async_iaa) {
-		u32 cmd, status;
-
-		/* If we get here, IAA is *REALLY* late.  It's barely
-		 * conceivable that the system is so busy that CMD_IAAD
-		 * is still legitimately set, so let's be sure it's
-		 * clear before we read STS_IAA.  (The HC should clear
-		 * CMD_IAAD when it sets STS_IAA.)
-		 */
-		cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-
-		/*
-		 * If IAA is set here it either legitimately triggered
-		 * after the watchdog timer expired (_way_ late, so we'll
-		 * still count it as lost) ... or a silicon erratum:
-		 * - VIA seems to set IAA without triggering the IRQ;
-		 * - IAAD potentially cleared without setting IAA.
-		 */
-		status = fusbh200_readl(fusbh200, &fusbh200->regs->status);
-		if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
-			COUNT(fusbh200->stats.lost_iaa);
-			fusbh200_writel(fusbh200, STS_IAA, &fusbh200->regs->status);
-		}
-
-		fusbh200_dbg(fusbh200, "IAA watchdog: status %x cmd %x\n",
-				status, cmd);
-		end_unlink_async(fusbh200);
-	}
-}
-
-
-/* Enable the I/O watchdog, if appropriate */
-static void turn_on_io_watchdog(struct fusbh200_hcd *fusbh200)
-{
-	/* Not needed if the controller isn't running or it's already enabled */
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING ||
-			(fusbh200->enabled_hrtimer_events &
-				BIT(FUSBH200_HRTIMER_IO_WATCHDOG)))
-		return;
-
-	/*
-	 * Isochronous transfers always need the watchdog.
-	 * For other sorts we use it only if the flag is set.
-	 */
-	if (fusbh200->isoc_count > 0 || (fusbh200->need_io_watchdog &&
-			fusbh200->async_count + fusbh200->intr_count > 0))
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IO_WATCHDOG, true);
-}
-
-
-/*
- * Handler functions for the hrtimer event types.
- * Keep this array in the same order as the event types indexed by
- * enum fusbh200_hrtimer_event in fusbh200.h.
- */
-static void (*event_handlers[])(struct fusbh200_hcd *) = {
-	fusbh200_poll_ASS,			/* FUSBH200_HRTIMER_POLL_ASS */
-	fusbh200_poll_PSS,			/* FUSBH200_HRTIMER_POLL_PSS */
-	fusbh200_handle_controller_death,	/* FUSBH200_HRTIMER_POLL_DEAD */
-	fusbh200_handle_intr_unlinks,	/* FUSBH200_HRTIMER_UNLINK_INTR */
-	end_free_itds,			/* FUSBH200_HRTIMER_FREE_ITDS */
-	unlink_empty_async,		/* FUSBH200_HRTIMER_ASYNC_UNLINKS */
-	fusbh200_iaa_watchdog,		/* FUSBH200_HRTIMER_IAA_WATCHDOG */
-	fusbh200_disable_PSE,		/* FUSBH200_HRTIMER_DISABLE_PERIODIC */
-	fusbh200_disable_ASE,		/* FUSBH200_HRTIMER_DISABLE_ASYNC */
-	fusbh200_work,			/* FUSBH200_HRTIMER_IO_WATCHDOG */
-};
-
-static enum hrtimer_restart fusbh200_hrtimer_func(struct hrtimer *t)
-{
-	struct fusbh200_hcd	*fusbh200 = container_of(t, struct fusbh200_hcd, hrtimer);
-	ktime_t		now;
-	unsigned long	events;
-	unsigned long	flags;
-	unsigned	e;
-
-	spin_lock_irqsave(&fusbh200->lock, flags);
-
-	events = fusbh200->enabled_hrtimer_events;
-	fusbh200->enabled_hrtimer_events = 0;
-	fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT;
-
-	/*
-	 * Check each pending event.  If its time has expired, handle
-	 * the event; otherwise re-enable it.
-	 */
-	now = ktime_get();
-	for_each_set_bit(e, &events, FUSBH200_HRTIMER_NUM_EVENTS) {
-		if (now.tv64 >= fusbh200->hr_timeouts[e].tv64)
-			event_handlers[e](fusbh200);
-		else
-			fusbh200_enable_event(fusbh200, e, false);
-	}
-
-	spin_unlock_irqrestore(&fusbh200->lock, flags);
-	return HRTIMER_NORESTART;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_bus_suspend	NULL
-#define fusbh200_bus_resume	NULL
-
-/*-------------------------------------------------------------------------*/
-
-static int check_reset_complete (
-	struct fusbh200_hcd	*fusbh200,
-	int		index,
-	u32 __iomem	*status_reg,
-	int		port_status
-) {
-	if (!(port_status & PORT_CONNECT))
-		return port_status;
-
-	/* if reset finished and it's still not enabled -- handoff */
-	if (!(port_status & PORT_PE)) {
-		/* with integrated TT, there's nobody to hand it to! */
-		fusbh200_dbg (fusbh200,
-			"Failed to enable port %d on root hub TT\n",
-			index+1);
-		return port_status;
-	} else {
-		fusbh200_dbg(fusbh200, "port %d reset complete, port enabled\n",
-			index + 1);
-	}
-
-	return port_status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-
-/* build "status change" packet (one or two bytes) from HC registers */
-
-static int
-fusbh200_hub_status_data (struct usb_hcd *hcd, char *buf)
-{
-	struct fusbh200_hcd	*fusbh200 = hcd_to_fusbh200 (hcd);
-	u32		temp, status;
-	u32		mask;
-	int		retval = 1;
-	unsigned long	flags;
-
-	/* init status to no-changes */
-	buf [0] = 0;
-
-	/* Inform the core about resumes-in-progress by returning
-	 * a non-zero value even if there are no status changes.
-	 */
-	status = fusbh200->resuming_ports;
-
-	mask = PORT_CSC | PORT_PEC;
-	// PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND
-
-	/* no hub change reports (bit 0) for now (power, ...) */
-
-	/* port N changes (bit N)? */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	temp = fusbh200_readl(fusbh200, &fusbh200->regs->port_status);
-
-	/*
-	 * Return status information even for ports with OWNER set.
-	 * Otherwise hub_wq wouldn't see the disconnect event when a
-	 * high-speed device is switched over to the companion
-	 * controller by the user.
-	 */
-
-	if ((temp & mask) != 0 || test_bit(0, &fusbh200->port_c_suspend)
-			|| (fusbh200->reset_done[0] && time_after_eq(
-				jiffies, fusbh200->reset_done[0]))) {
-		buf [0] |= 1 << 1;
-		status = STS_PCD;
-	}
-	/* FIXME autosuspend idle root hubs */
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return status ? retval : 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void
-fusbh200_hub_descriptor (
-	struct fusbh200_hcd		*fusbh200,
-	struct usb_hub_descriptor	*desc
-) {
-	int		ports = HCS_N_PORTS (fusbh200->hcs_params);
-	u16		temp;
-
-	desc->bDescriptorType = USB_DT_HUB;
-	desc->bPwrOn2PwrGood = 10;	/* fusbh200 1.0, 2.3.9 says 20ms max */
-	desc->bHubContrCurrent = 0;
-
-	desc->bNbrPorts = ports;
-	temp = 1 + (ports / 8);
-	desc->bDescLength = 7 + 2 * temp;
-
-	/* two bitmaps:  ports removable, and usb 1.0 legacy PortPwrCtrlMask */
-	memset(&desc->u.hs.DeviceRemovable[0], 0, temp);
-	memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp);
-
-	temp = HUB_CHAR_INDV_PORT_OCPM;	/* per-port overcurrent reporting */
-	temp |= HUB_CHAR_NO_LPSM;	/* no power switching */
-	desc->wHubCharacteristics = cpu_to_le16(temp);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int fusbh200_hub_control (
-	struct usb_hcd	*hcd,
-	u16		typeReq,
-	u16		wValue,
-	u16		wIndex,
-	char		*buf,
-	u16		wLength
-) {
-	struct fusbh200_hcd	*fusbh200 = hcd_to_fusbh200 (hcd);
-	int		ports = HCS_N_PORTS (fusbh200->hcs_params);
-	u32 __iomem	*status_reg = &fusbh200->regs->port_status;
-	u32		temp, temp1, status;
-	unsigned long	flags;
-	int		retval = 0;
-	unsigned	selector;
-
-	/*
-	 * FIXME:  support SetPortFeatures USB_PORT_FEAT_INDICATOR.
-	 * HCS_INDICATOR may say we can change LEDs to off/amber/green.
-	 * (track current state ourselves) ... blink for diagnostics,
-	 * power, "this is the one", etc.  EHCI spec supports this.
-	 */
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	switch (typeReq) {
-	case ClearHubFeature:
-		switch (wValue) {
-		case C_HUB_LOCAL_POWER:
-		case C_HUB_OVER_CURRENT:
-			/* no hub-wide feature/status flags */
-			break;
-		default:
-			goto error;
-		}
-		break;
-	case ClearPortFeature:
-		if (!wIndex || wIndex > ports)
-			goto error;
-		wIndex--;
-		temp = fusbh200_readl(fusbh200, status_reg);
-		temp &= ~PORT_RWC_BITS;
-
-		/*
-		 * Even if OWNER is set, so the port is owned by the
-		 * companion controller, hub_wq needs to be able to clear
-		 * the port-change status bits (especially
-		 * USB_PORT_STAT_C_CONNECTION).
-		 */
-
-		switch (wValue) {
-		case USB_PORT_FEAT_ENABLE:
-			fusbh200_writel(fusbh200, temp & ~PORT_PE, status_reg);
-			break;
-		case USB_PORT_FEAT_C_ENABLE:
-			fusbh200_writel(fusbh200, temp | PORT_PEC, status_reg);
-			break;
-		case USB_PORT_FEAT_SUSPEND:
-			if (temp & PORT_RESET)
-				goto error;
-			if (!(temp & PORT_SUSPEND))
-				break;
-			if ((temp & PORT_PE) == 0)
-				goto error;
-
-			fusbh200_writel(fusbh200, temp | PORT_RESUME, status_reg);
-			fusbh200->reset_done[wIndex] = jiffies
-					+ msecs_to_jiffies(USB_RESUME_TIMEOUT);
-			break;
-		case USB_PORT_FEAT_C_SUSPEND:
-			clear_bit(wIndex, &fusbh200->port_c_suspend);
-			break;
-		case USB_PORT_FEAT_C_CONNECTION:
-			fusbh200_writel(fusbh200, temp | PORT_CSC, status_reg);
-			break;
-		case USB_PORT_FEAT_C_OVER_CURRENT:
-			fusbh200_writel(fusbh200, temp | BMISR_OVC, &fusbh200->regs->bmisr);
-			break;
-		case USB_PORT_FEAT_C_RESET:
-			/* GetPortStatus clears reset */
-			break;
-		default:
-			goto error;
-		}
-		fusbh200_readl(fusbh200, &fusbh200->regs->command);	/* unblock posted write */
-		break;
-	case GetHubDescriptor:
-		fusbh200_hub_descriptor (fusbh200, (struct usb_hub_descriptor *)
-			buf);
-		break;
-	case GetHubStatus:
-		/* no hub-wide feature/status flags */
-		memset (buf, 0, 4);
-		//cpu_to_le32s ((u32 *) buf);
-		break;
-	case GetPortStatus:
-		if (!wIndex || wIndex > ports)
-			goto error;
-		wIndex--;
-		status = 0;
-		temp = fusbh200_readl(fusbh200, status_reg);
-
-		// wPortChange bits
-		if (temp & PORT_CSC)
-			status |= USB_PORT_STAT_C_CONNECTION << 16;
-		if (temp & PORT_PEC)
-			status |= USB_PORT_STAT_C_ENABLE << 16;
-
-		temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr);
-		if (temp1 & BMISR_OVC)
-			status |= USB_PORT_STAT_C_OVERCURRENT << 16;
-
-		/* whoever resumes must GetPortStatus to complete it!! */
-		if (temp & PORT_RESUME) {
-
-			/* Remote Wakeup received? */
-			if (!fusbh200->reset_done[wIndex]) {
-				/* resume signaling for 20 msec */
-				fusbh200->reset_done[wIndex] = jiffies
-						+ msecs_to_jiffies(20);
-				/* check the port again */
-				mod_timer(&fusbh200_to_hcd(fusbh200)->rh_timer,
-						fusbh200->reset_done[wIndex]);
-			}
-
-			/* resume completed? */
-			else if (time_after_eq(jiffies,
-					fusbh200->reset_done[wIndex])) {
-				clear_bit(wIndex, &fusbh200->suspended_ports);
-				set_bit(wIndex, &fusbh200->port_c_suspend);
-				fusbh200->reset_done[wIndex] = 0;
-
-				/* stop resume signaling */
-				temp = fusbh200_readl(fusbh200, status_reg);
-				fusbh200_writel(fusbh200,
-					temp & ~(PORT_RWC_BITS | PORT_RESUME),
-					status_reg);
-				clear_bit(wIndex, &fusbh200->resuming_ports);
-				retval = handshake(fusbh200, status_reg,
-					   PORT_RESUME, 0, 2000 /* 2msec */);
-				if (retval != 0) {
-					fusbh200_err(fusbh200,
-						"port %d resume error %d\n",
-						wIndex + 1, retval);
-					goto error;
-				}
-				temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
-			}
-		}
-
-		/* whoever resets must GetPortStatus to complete it!! */
-		if ((temp & PORT_RESET)
-				&& time_after_eq(jiffies,
-					fusbh200->reset_done[wIndex])) {
-			status |= USB_PORT_STAT_C_RESET << 16;
-			fusbh200->reset_done [wIndex] = 0;
-			clear_bit(wIndex, &fusbh200->resuming_ports);
-
-			/* force reset to complete */
-			fusbh200_writel(fusbh200, temp & ~(PORT_RWC_BITS | PORT_RESET),
-					status_reg);
-			/* REVISIT:  some hardware needs 550+ usec to clear
-			 * this bit; seems too long to spin routinely...
-			 */
-			retval = handshake(fusbh200, status_reg,
-					PORT_RESET, 0, 1000);
-			if (retval != 0) {
-				fusbh200_err (fusbh200, "port %d reset error %d\n",
-					wIndex + 1, retval);
-				goto error;
-			}
-
-			/* see what we found out */
-			temp = check_reset_complete (fusbh200, wIndex, status_reg,
-					fusbh200_readl(fusbh200, status_reg));
-		}
-
-		if (!(temp & (PORT_RESUME|PORT_RESET))) {
-			fusbh200->reset_done[wIndex] = 0;
-			clear_bit(wIndex, &fusbh200->resuming_ports);
-		}
-
-		/* transfer dedicated ports to the companion hc */
-		if ((temp & PORT_CONNECT) &&
-				test_bit(wIndex, &fusbh200->companion_ports)) {
-			temp &= ~PORT_RWC_BITS;
-			fusbh200_writel(fusbh200, temp, status_reg);
-			fusbh200_dbg(fusbh200, "port %d --> companion\n", wIndex + 1);
-			temp = fusbh200_readl(fusbh200, status_reg);
-		}
-
-		/*
-		 * Even if OWNER is set, there's no harm letting hub_wq
-		 * see the wPortStatus values (they should all be 0 except
-		 * for PORT_POWER anyway).
-		 */
-
-		if (temp & PORT_CONNECT) {
-			status |= USB_PORT_STAT_CONNECTION;
-			status |= fusbh200_port_speed(fusbh200, temp);
-		}
-		if (temp & PORT_PE)
-			status |= USB_PORT_STAT_ENABLE;
-
-		/* maybe the port was unsuspended without our knowledge */
-		if (temp & (PORT_SUSPEND|PORT_RESUME)) {
-			status |= USB_PORT_STAT_SUSPEND;
-		} else if (test_bit(wIndex, &fusbh200->suspended_ports)) {
-			clear_bit(wIndex, &fusbh200->suspended_ports);
-			clear_bit(wIndex, &fusbh200->resuming_ports);
-			fusbh200->reset_done[wIndex] = 0;
-			if (temp & PORT_PE)
-				set_bit(wIndex, &fusbh200->port_c_suspend);
-		}
-
-		temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr);
-		if (temp1 & BMISR_OVC)
-			status |= USB_PORT_STAT_OVERCURRENT;
-		if (temp & PORT_RESET)
-			status |= USB_PORT_STAT_RESET;
-		if (test_bit(wIndex, &fusbh200->port_c_suspend))
-			status |= USB_PORT_STAT_C_SUSPEND << 16;
-
-		if (status & ~0xffff)	/* only if wPortChange is interesting */
-			dbg_port(fusbh200, "GetStatus", wIndex + 1, temp);
-		put_unaligned_le32(status, buf);
-		break;
-	case SetHubFeature:
-		switch (wValue) {
-		case C_HUB_LOCAL_POWER:
-		case C_HUB_OVER_CURRENT:
-			/* no hub-wide feature/status flags */
-			break;
-		default:
-			goto error;
-		}
-		break;
-	case SetPortFeature:
-		selector = wIndex >> 8;
-		wIndex &= 0xff;
-
-		if (!wIndex || wIndex > ports)
-			goto error;
-		wIndex--;
-		temp = fusbh200_readl(fusbh200, status_reg);
-		temp &= ~PORT_RWC_BITS;
-		switch (wValue) {
-		case USB_PORT_FEAT_SUSPEND:
-			if ((temp & PORT_PE) == 0
-					|| (temp & PORT_RESET) != 0)
-				goto error;
-
-			/* After above check the port must be connected.
-			 * Set appropriate bit thus could put phy into low power
-			 * mode if we have hostpc feature
-			 */
-			fusbh200_writel(fusbh200, temp | PORT_SUSPEND, status_reg);
-			set_bit(wIndex, &fusbh200->suspended_ports);
-			break;
-		case USB_PORT_FEAT_RESET:
-			if (temp & PORT_RESUME)
-				goto error;
-			/* line status bits may report this as low speed,
-			 * which can be fine if this root hub has a
-			 * transaction translator built in.
-			 */
-			fusbh200_dbg(fusbh200, "port %d reset\n", wIndex + 1);
-			temp |= PORT_RESET;
-			temp &= ~PORT_PE;
-
-			/*
-			 * caller must wait, then call GetPortStatus
-			 * usb 2.0 spec says 50 ms resets on root
-			 */
-			fusbh200->reset_done [wIndex] = jiffies
-					+ msecs_to_jiffies (50);
-			fusbh200_writel(fusbh200, temp, status_reg);
-			break;
-
-		/* For downstream facing ports (these):  one hub port is put
-		 * into test mode according to USB2 11.24.2.13, then the hub
-		 * must be reset (which for root hub now means rmmod+modprobe,
-		 * or else system reboot).  See EHCI 2.3.9 and 4.14 for info
-		 * about the EHCI-specific stuff.
-		 */
-		case USB_PORT_FEAT_TEST:
-			if (!selector || selector > 5)
-				goto error;
-			spin_unlock_irqrestore(&fusbh200->lock, flags);
-			fusbh200_quiesce(fusbh200);
-			spin_lock_irqsave(&fusbh200->lock, flags);
-
-			/* Put all enabled ports into suspend */
-			temp = fusbh200_readl(fusbh200, status_reg) & ~PORT_RWC_BITS;
-			if (temp & PORT_PE)
-				fusbh200_writel(fusbh200, temp | PORT_SUSPEND,
-						status_reg);
-
-			spin_unlock_irqrestore(&fusbh200->lock, flags);
-			fusbh200_halt(fusbh200);
-			spin_lock_irqsave(&fusbh200->lock, flags);
-
-			temp = fusbh200_readl(fusbh200, status_reg);
-			temp |= selector << 16;
-			fusbh200_writel(fusbh200, temp, status_reg);
-			break;
-
-		default:
-			goto error;
-		}
-		fusbh200_readl(fusbh200, &fusbh200->regs->command);	/* unblock posted writes */
-		break;
-
-	default:
-error:
-		/* "stall" on error */
-		retval = -EPIPE;
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return retval;
-}
-
-static void __maybe_unused fusbh200_relinquish_port(struct usb_hcd *hcd,
-		int portnum)
-{
-	return;
-}
-
-static int __maybe_unused fusbh200_port_handed_over(struct usb_hcd *hcd,
-		int portnum)
-{
-	return 0;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * There's basically three types of memory:
- *	- data used only by the HCD ... kmalloc is fine
- *	- async and periodic schedules, shared by HC and HCD ... these
- *	  need to use dma_pool or dma_alloc_coherent
- *	- driver buffers, read/written by HC ... single shot DMA mapped
- *
- * There's also "register" data (e.g. PCI or SOC), which is memory mapped.
- * No memory seen by this driver is pageable.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* Allocate the key transfer structures from the previously allocated pool */
-
-static inline void fusbh200_qtd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd,
-				  dma_addr_t dma)
-{
-	memset (qtd, 0, sizeof *qtd);
-	qtd->qtd_dma = dma;
-	qtd->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT);
-	qtd->hw_next = FUSBH200_LIST_END(fusbh200);
-	qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-	INIT_LIST_HEAD (&qtd->qtd_list);
-}
-
-static struct fusbh200_qtd *fusbh200_qtd_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
-	struct fusbh200_qtd		*qtd;
-	dma_addr_t		dma;
-
-	qtd = dma_pool_alloc (fusbh200->qtd_pool, flags, &dma);
-	if (qtd != NULL) {
-		fusbh200_qtd_init(fusbh200, qtd, dma);
-	}
-	return qtd;
-}
-
-static inline void fusbh200_qtd_free (struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd)
-{
-	dma_pool_free (fusbh200->qtd_pool, qtd, qtd->qtd_dma);
-}
-
-
-static void qh_destroy(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	/* clean qtds first, and know this is not linked */
-	if (!list_empty (&qh->qtd_list) || qh->qh_next.ptr) {
-		fusbh200_dbg (fusbh200, "unused qh not empty!\n");
-		BUG ();
-	}
-	if (qh->dummy)
-		fusbh200_qtd_free (fusbh200, qh->dummy);
-	dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma);
-	kfree(qh);
-}
-
-static struct fusbh200_qh *fusbh200_qh_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
-	struct fusbh200_qh		*qh;
-	dma_addr_t		dma;
-
-	qh = kzalloc(sizeof *qh, GFP_ATOMIC);
-	if (!qh)
-		goto done;
-	qh->hw = (struct fusbh200_qh_hw *)
-		dma_pool_alloc(fusbh200->qh_pool, flags, &dma);
-	if (!qh->hw)
-		goto fail;
-	memset(qh->hw, 0, sizeof *qh->hw);
-	qh->qh_dma = dma;
-	// INIT_LIST_HEAD (&qh->qh_list);
-	INIT_LIST_HEAD (&qh->qtd_list);
-
-	/* dummy td enables safe urb queuing */
-	qh->dummy = fusbh200_qtd_alloc (fusbh200, flags);
-	if (qh->dummy == NULL) {
-		fusbh200_dbg (fusbh200, "no dummy td\n");
-		goto fail1;
-	}
-done:
-	return qh;
-fail1:
-	dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma);
-fail:
-	kfree(qh);
-	return NULL;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* The queue heads and transfer descriptors are managed from pools tied
- * to each of the "per device" structures.
- * This is the initialisation and cleanup code.
- */
-
-static void fusbh200_mem_cleanup (struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->async)
-		qh_destroy(fusbh200, fusbh200->async);
-	fusbh200->async = NULL;
-
-	if (fusbh200->dummy)
-		qh_destroy(fusbh200, fusbh200->dummy);
-	fusbh200->dummy = NULL;
-
-	/* DMA consistent memory and pools */
-	if (fusbh200->qtd_pool)
-		dma_pool_destroy (fusbh200->qtd_pool);
-	fusbh200->qtd_pool = NULL;
-
-	if (fusbh200->qh_pool) {
-		dma_pool_destroy (fusbh200->qh_pool);
-		fusbh200->qh_pool = NULL;
-	}
-
-	if (fusbh200->itd_pool)
-		dma_pool_destroy (fusbh200->itd_pool);
-	fusbh200->itd_pool = NULL;
-
-	if (fusbh200->periodic)
-		dma_free_coherent (fusbh200_to_hcd(fusbh200)->self.controller,
-			fusbh200->periodic_size * sizeof (u32),
-			fusbh200->periodic, fusbh200->periodic_dma);
-	fusbh200->periodic = NULL;
-
-	/* shadow periodic table */
-	kfree(fusbh200->pshadow);
-	fusbh200->pshadow = NULL;
-}
-
-/* remember to add cleanup code (above) if you add anything here */
-static int fusbh200_mem_init (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
-	int i;
-
-	/* QTDs for control/bulk/intr transfers */
-	fusbh200->qtd_pool = dma_pool_create ("fusbh200_qtd",
-			fusbh200_to_hcd(fusbh200)->self.controller,
-			sizeof (struct fusbh200_qtd),
-			32 /* byte alignment (for hw parts) */,
-			4096 /* can't cross 4K */);
-	if (!fusbh200->qtd_pool) {
-		goto fail;
-	}
-
-	/* QHs for control/bulk/intr transfers */
-	fusbh200->qh_pool = dma_pool_create ("fusbh200_qh",
-			fusbh200_to_hcd(fusbh200)->self.controller,
-			sizeof(struct fusbh200_qh_hw),
-			32 /* byte alignment (for hw parts) */,
-			4096 /* can't cross 4K */);
-	if (!fusbh200->qh_pool) {
-		goto fail;
-	}
-	fusbh200->async = fusbh200_qh_alloc (fusbh200, flags);
-	if (!fusbh200->async) {
-		goto fail;
-	}
-
-	/* ITD for high speed ISO transfers */
-	fusbh200->itd_pool = dma_pool_create ("fusbh200_itd",
-			fusbh200_to_hcd(fusbh200)->self.controller,
-			sizeof (struct fusbh200_itd),
-			64 /* byte alignment (for hw parts) */,
-			4096 /* can't cross 4K */);
-	if (!fusbh200->itd_pool) {
-		goto fail;
-	}
-
-	/* Hardware periodic table */
-	fusbh200->periodic = (__le32 *)
-		dma_alloc_coherent (fusbh200_to_hcd(fusbh200)->self.controller,
-			fusbh200->periodic_size * sizeof(__le32),
-			&fusbh200->periodic_dma, 0);
-	if (fusbh200->periodic == NULL) {
-		goto fail;
-	}
-
-		for (i = 0; i < fusbh200->periodic_size; i++)
-			fusbh200->periodic[i] = FUSBH200_LIST_END(fusbh200);
-
-	/* software shadow of hardware table */
-	fusbh200->pshadow = kcalloc(fusbh200->periodic_size, sizeof(void *), flags);
-	if (fusbh200->pshadow != NULL)
-		return 0;
-
-fail:
-	fusbh200_dbg (fusbh200, "couldn't init memory\n");
-	fusbh200_mem_cleanup (fusbh200);
-	return -ENOMEM;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI hardware queue manipulation ... the core.  QH/QTD manipulation.
- *
- * Control, bulk, and interrupt traffic all use "qh" lists.  They list "qtd"
- * entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned
- * buffers needed for the larger number).  We use one QH per endpoint, queue
- * multiple urbs (all three types) per endpoint.  URBs may need several qtds.
- *
- * ISO traffic uses "ISO TD" (itd) records, and (along with
- * interrupts) needs careful scheduling.  Performance improvements can be
- * an ongoing challenge.  That's in "ehci-sched.c".
- *
- * USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs,
- * or otherwise through transaction translators (TTs) in USB 2.0 hubs using
- * (b) special fields in qh entries or (c) split iso entries.  TTs will
- * buffer low/full speed data so the host collects it at high speed.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* fill a qtd, returning how much of the buffer we were able to queue up */
-
-static int
-qtd_fill(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd, dma_addr_t buf,
-		  size_t len, int token, int maxpacket)
-{
-	int	i, count;
-	u64	addr = buf;
-
-	/* one buffer entry per 4K ... first might be short or unaligned */
-	qtd->hw_buf[0] = cpu_to_hc32(fusbh200, (u32)addr);
-	qtd->hw_buf_hi[0] = cpu_to_hc32(fusbh200, (u32)(addr >> 32));
-	count = 0x1000 - (buf & 0x0fff);	/* rest of that page */
-	if (likely (len < count))		/* ... iff needed */
-		count = len;
-	else {
-		buf +=  0x1000;
-		buf &= ~0x0fff;
-
-		/* per-qtd limit: from 16K to 20K (best alignment) */
-		for (i = 1; count < len && i < 5; i++) {
-			addr = buf;
-			qtd->hw_buf[i] = cpu_to_hc32(fusbh200, (u32)addr);
-			qtd->hw_buf_hi[i] = cpu_to_hc32(fusbh200,
-					(u32)(addr >> 32));
-			buf += 0x1000;
-			if ((count + 0x1000) < len)
-				count += 0x1000;
-			else
-				count = len;
-		}
-
-		/* short packets may only terminate transfers */
-		if (count != len)
-			count -= (count % maxpacket);
-	}
-	qtd->hw_token = cpu_to_hc32(fusbh200, (count << 16) | token);
-	qtd->length = count;
-
-	return count;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void
-qh_update (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh, struct fusbh200_qtd *qtd)
-{
-	struct fusbh200_qh_hw *hw = qh->hw;
-
-	/* writes to an active overlay are unsafe */
-	BUG_ON(qh->qh_state != QH_STATE_IDLE);
-
-	hw->hw_qtd_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-	hw->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-
-	/* Except for control endpoints, we make hardware maintain data
-	 * toggle (like OHCI) ... here (re)initialize the toggle in the QH,
-	 * and set the pseudo-toggle in udev. Only usb_clear_halt() will
-	 * ever clear it.
-	 */
-	if (!(hw->hw_info1 & cpu_to_hc32(fusbh200, QH_TOGGLE_CTL))) {
-		unsigned	is_out, epnum;
-
-		is_out = qh->is_out;
-		epnum = (hc32_to_cpup(fusbh200, &hw->hw_info1) >> 8) & 0x0f;
-		if (unlikely (!usb_gettoggle (qh->dev, epnum, is_out))) {
-			hw->hw_token &= ~cpu_to_hc32(fusbh200, QTD_TOGGLE);
-			usb_settoggle (qh->dev, epnum, is_out, 1);
-		}
-	}
-
-	hw->hw_token &= cpu_to_hc32(fusbh200, QTD_TOGGLE | QTD_STS_PING);
-}
-
-/* if it weren't for a common silicon quirk (writing the dummy into the qh
- * overlay, so qh->hw_token wrongly becomes inactive/halted), only fault
- * recovery (including urb dequeue) would need software changes to a QH...
- */
-static void
-qh_refresh (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qtd *qtd;
-
-	if (list_empty (&qh->qtd_list))
-		qtd = qh->dummy;
-	else {
-		qtd = list_entry (qh->qtd_list.next,
-				struct fusbh200_qtd, qtd_list);
-		/*
-		 * first qtd may already be partially processed.
-		 * If we come here during unlink, the QH overlay region
-		 * might have reference to the just unlinked qtd. The
-		 * qtd is updated in qh_completions(). Update the QH
-		 * overlay here.
-		 */
-		if (cpu_to_hc32(fusbh200, qtd->qtd_dma) == qh->hw->hw_current) {
-			qh->hw->hw_qtd_next = qtd->hw_next;
-			qtd = NULL;
-		}
-	}
-
-	if (qtd)
-		qh_update (fusbh200, qh, qtd);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void qh_link_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-static void fusbh200_clear_tt_buffer_complete(struct usb_hcd *hcd,
-		struct usb_host_endpoint *ep)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200(hcd);
-	struct fusbh200_qh		*qh = ep->hcpriv;
-	unsigned long		flags;
-
-	spin_lock_irqsave(&fusbh200->lock, flags);
-	qh->clearing_tt = 0;
-	if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list)
-			&& fusbh200->rh_state == FUSBH200_RH_RUNNING)
-		qh_link_async(fusbh200, qh);
-	spin_unlock_irqrestore(&fusbh200->lock, flags);
-}
-
-static void fusbh200_clear_tt_buffer(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh,
-		struct urb *urb, u32 token)
-{
-
-	/* If an async split transaction gets an error or is unlinked,
-	 * the TT buffer may be left in an indeterminate state.  We
-	 * have to clear the TT buffer.
-	 *
-	 * Note: this routine is never called for Isochronous transfers.
-	 */
-	if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
-		struct usb_device *tt = urb->dev->tt->hub;
-
-		dev_dbg(&tt->dev,
-			"clear tt buffer port %d, a%d ep%d t%08x\n",
-			urb->dev->ttport, urb->dev->devnum,
-			usb_pipeendpoint(urb->pipe), token);
-
-		if (urb->dev->tt->hub !=
-		    fusbh200_to_hcd(fusbh200)->self.root_hub) {
-			if (usb_hub_clear_tt_buffer(urb) == 0)
-				qh->clearing_tt = 1;
-		}
-	}
-}
-
-static int qtd_copy_status (
-	struct fusbh200_hcd *fusbh200,
-	struct urb *urb,
-	size_t length,
-	u32 token
-)
-{
-	int	status = -EINPROGRESS;
-
-	/* count IN/OUT bytes, not SETUP (even short packets) */
-	if (likely (QTD_PID (token) != 2))
-		urb->actual_length += length - QTD_LENGTH (token);
-
-	/* don't modify error codes */
-	if (unlikely(urb->unlinked))
-		return status;
-
-	/* force cleanup after short read; not always an error */
-	if (unlikely (IS_SHORT_READ (token)))
-		status = -EREMOTEIO;
-
-	/* serious "can't proceed" faults reported by the hardware */
-	if (token & QTD_STS_HALT) {
-		if (token & QTD_STS_BABBLE) {
-			/* FIXME "must" disable babbling device's port too */
-			status = -EOVERFLOW;
-		/* CERR nonzero + halt --> stall */
-		} else if (QTD_CERR(token)) {
-			status = -EPIPE;
-
-		/* In theory, more than one of the following bits can be set
-		 * since they are sticky and the transaction is retried.
-		 * Which to test first is rather arbitrary.
-		 */
-		} else if (token & QTD_STS_MMF) {
-			/* fs/ls interrupt xfer missed the complete-split */
-			status = -EPROTO;
-		} else if (token & QTD_STS_DBE) {
-			status = (QTD_PID (token) == 1) /* IN ? */
-				? -ENOSR  /* hc couldn't read data */
-				: -ECOMM; /* hc couldn't write data */
-		} else if (token & QTD_STS_XACT) {
-			/* timeout, bad CRC, wrong PID, etc */
-			fusbh200_dbg(fusbh200, "devpath %s ep%d%s 3strikes\n",
-				urb->dev->devpath,
-				usb_pipeendpoint(urb->pipe),
-				usb_pipein(urb->pipe) ? "in" : "out");
-			status = -EPROTO;
-		} else {	/* unknown */
-			status = -EPROTO;
-		}
-
-		fusbh200_dbg(fusbh200,
-			"dev%d ep%d%s qtd token %08x --> status %d\n",
-			usb_pipedevice (urb->pipe),
-			usb_pipeendpoint (urb->pipe),
-			usb_pipein (urb->pipe) ? "in" : "out",
-			token, status);
-	}
-
-	return status;
-}
-
-static void
-fusbh200_urb_done(struct fusbh200_hcd *fusbh200, struct urb *urb, int status)
-__releases(fusbh200->lock)
-__acquires(fusbh200->lock)
-{
-	if (likely (urb->hcpriv != NULL)) {
-		struct fusbh200_qh	*qh = (struct fusbh200_qh *) urb->hcpriv;
-
-		/* S-mask in a QH means it's an interrupt urb */
-		if ((qh->hw->hw_info2 & cpu_to_hc32(fusbh200, QH_SMASK)) != 0) {
-
-			/* ... update hc-wide periodic stats (for usbfs) */
-			fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs--;
-		}
-	}
-
-	if (unlikely(urb->unlinked)) {
-		COUNT(fusbh200->stats.unlink);
-	} else {
-		/* report non-error and short read status as zero */
-		if (status == -EINPROGRESS || status == -EREMOTEIO)
-			status = 0;
-		COUNT(fusbh200->stats.complete);
-	}
-
-#ifdef FUSBH200_URB_TRACE
-	fusbh200_dbg (fusbh200,
-		"%s %s urb %p ep%d%s status %d len %d/%d\n",
-		__func__, urb->dev->devpath, urb,
-		usb_pipeendpoint (urb->pipe),
-		usb_pipein (urb->pipe) ? "in" : "out",
-		status,
-		urb->actual_length, urb->transfer_buffer_length);
-#endif
-
-	/* complete() can reenter this HCD */
-	usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-	spin_unlock (&fusbh200->lock);
-	usb_hcd_giveback_urb(fusbh200_to_hcd(fusbh200), urb, status);
-	spin_lock (&fusbh200->lock);
-}
-
-static int qh_schedule (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-/*
- * Process and free completed qtds for a qh, returning URBs to drivers.
- * Chases up to qh->hw_current.  Returns number of completions called,
- * indicating how much "real" work we did.
- */
-static unsigned
-qh_completions (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qtd		*last, *end = qh->dummy;
-	struct list_head	*entry, *tmp;
-	int			last_status;
-	int			stopped;
-	unsigned		count = 0;
-	u8			state;
-	struct fusbh200_qh_hw	*hw = qh->hw;
-
-	if (unlikely (list_empty (&qh->qtd_list)))
-		return count;
-
-	/* completions (or tasks on other cpus) must never clobber HALT
-	 * till we've gone through and cleaned everything up, even when
-	 * they add urbs to this qh's queue or mark them for unlinking.
-	 *
-	 * NOTE:  unlinking expects to be done in queue order.
-	 *
-	 * It's a bug for qh->qh_state to be anything other than
-	 * QH_STATE_IDLE, unless our caller is scan_async() or
-	 * scan_intr().
-	 */
-	state = qh->qh_state;
-	qh->qh_state = QH_STATE_COMPLETING;
-	stopped = (state == QH_STATE_IDLE);
-
- rescan:
-	last = NULL;
-	last_status = -EINPROGRESS;
-	qh->needs_rescan = 0;
-
-	/* remove de-activated QTDs from front of queue.
-	 * after faults (including short reads), cleanup this urb
-	 * then let the queue advance.
-	 * if queue is stopped, handles unlinks.
-	 */
-	list_for_each_safe (entry, tmp, &qh->qtd_list) {
-		struct fusbh200_qtd	*qtd;
-		struct urb	*urb;
-		u32		token = 0;
-
-		qtd = list_entry (entry, struct fusbh200_qtd, qtd_list);
-		urb = qtd->urb;
-
-		/* clean up any state from previous QTD ...*/
-		if (last) {
-			if (likely (last->urb != urb)) {
-				fusbh200_urb_done(fusbh200, last->urb, last_status);
-				count++;
-				last_status = -EINPROGRESS;
-			}
-			fusbh200_qtd_free (fusbh200, last);
-			last = NULL;
-		}
-
-		/* ignore urbs submitted during completions we reported */
-		if (qtd == end)
-			break;
-
-		/* hardware copies qtd out of qh overlay */
-		rmb ();
-		token = hc32_to_cpu(fusbh200, qtd->hw_token);
-
-		/* always clean up qtds the hc de-activated */
- retry_xacterr:
-		if ((token & QTD_STS_ACTIVE) == 0) {
-
-			/* Report Data Buffer Error: non-fatal but useful */
-			if (token & QTD_STS_DBE)
-				fusbh200_dbg(fusbh200,
-					"detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-					urb,
-					usb_endpoint_num(&urb->ep->desc),
-					usb_endpoint_dir_in(&urb->ep->desc) ? "in" : "out",
-					urb->transfer_buffer_length,
-					qtd,
-					qh);
-
-			/* on STALL, error, and short reads this urb must
-			 * complete and all its qtds must be recycled.
-			 */
-			if ((token & QTD_STS_HALT) != 0) {
-
-				/* retry transaction errors until we
-				 * reach the software xacterr limit
-				 */
-				if ((token & QTD_STS_XACT) &&
-						QTD_CERR(token) == 0 &&
-						++qh->xacterrs < QH_XACTERR_MAX &&
-						!urb->unlinked) {
-					fusbh200_dbg(fusbh200,
-	"detected XactErr len %zu/%zu retry %d\n",
-	qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
-
-					/* reset the token in the qtd and the
-					 * qh overlay (which still contains
-					 * the qtd) so that we pick up from
-					 * where we left off
-					 */
-					token &= ~QTD_STS_HALT;
-					token |= QTD_STS_ACTIVE |
-							(FUSBH200_TUNE_CERR << 10);
-					qtd->hw_token = cpu_to_hc32(fusbh200,
-							token);
-					wmb();
-					hw->hw_token = cpu_to_hc32(fusbh200,
-							token);
-					goto retry_xacterr;
-				}
-				stopped = 1;
-
-			/* magic dummy for some short reads; qh won't advance.
-			 * that silicon quirk can kick in with this dummy too.
-			 *
-			 * other short reads won't stop the queue, including
-			 * control transfers (status stage handles that) or
-			 * most other single-qtd reads ... the queue stops if
-			 * URB_SHORT_NOT_OK was set so the driver submitting
-			 * the urbs could clean it up.
-			 */
-			} else if (IS_SHORT_READ (token)
-					&& !(qtd->hw_alt_next
-						& FUSBH200_LIST_END(fusbh200))) {
-				stopped = 1;
-			}
-
-		/* stop scanning when we reach qtds the hc is using */
-		} else if (likely (!stopped
-				&& fusbh200->rh_state >= FUSBH200_RH_RUNNING)) {
-			break;
-
-		/* scan the whole queue for unlinks whenever it stops */
-		} else {
-			stopped = 1;
-
-			/* cancel everything if we halt, suspend, etc */
-			if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
-				last_status = -ESHUTDOWN;
-
-			/* this qtd is active; skip it unless a previous qtd
-			 * for its urb faulted, or its urb was canceled.
-			 */
-			else if (last_status == -EINPROGRESS && !urb->unlinked)
-				continue;
-
-			/* qh unlinked; token in overlay may be most current */
-			if (state == QH_STATE_IDLE
-					&& cpu_to_hc32(fusbh200, qtd->qtd_dma)
-						== hw->hw_current) {
-				token = hc32_to_cpu(fusbh200, hw->hw_token);
-
-				/* An unlink may leave an incomplete
-				 * async transaction in the TT buffer.
-				 * We have to clear it.
-				 */
-				fusbh200_clear_tt_buffer(fusbh200, qh, urb, token);
-			}
-		}
-
-		/* unless we already know the urb's status, collect qtd status
-		 * and update count of bytes transferred.  in common short read
-		 * cases with only one data qtd (including control transfers),
-		 * queue processing won't halt.  but with two or more qtds (for
-		 * example, with a 32 KB transfer), when the first qtd gets a
-		 * short read the second must be removed by hand.
-		 */
-		if (last_status == -EINPROGRESS) {
-			last_status = qtd_copy_status(fusbh200, urb,
-					qtd->length, token);
-			if (last_status == -EREMOTEIO
-					&& (qtd->hw_alt_next
-						& FUSBH200_LIST_END(fusbh200)))
-				last_status = -EINPROGRESS;
-
-			/* As part of low/full-speed endpoint-halt processing
-			 * we must clear the TT buffer (11.17.5).
-			 */
-			if (unlikely(last_status != -EINPROGRESS &&
-					last_status != -EREMOTEIO)) {
-				/* The TT's in some hubs malfunction when they
-				 * receive this request following a STALL (they
-				 * stop sending isochronous packets).  Since a
-				 * STALL can't leave the TT buffer in a busy
-				 * state (if you believe Figures 11-48 - 11-51
-				 * in the USB 2.0 spec), we won't clear the TT
-				 * buffer in this case.  Strictly speaking this
-				 * is a violation of the spec.
-				 */
-				if (last_status != -EPIPE)
-					fusbh200_clear_tt_buffer(fusbh200, qh, urb,
-							token);
-			}
-		}
-
-		/* if we're removing something not at the queue head,
-		 * patch the hardware queue pointer.
-		 */
-		if (stopped && qtd->qtd_list.prev != &qh->qtd_list) {
-			last = list_entry (qtd->qtd_list.prev,
-					struct fusbh200_qtd, qtd_list);
-			last->hw_next = qtd->hw_next;
-		}
-
-		/* remove qtd; it's recycled after possible urb completion */
-		list_del (&qtd->qtd_list);
-		last = qtd;
-
-		/* reinit the xacterr counter for the next qtd */
-		qh->xacterrs = 0;
-	}
-
-	/* last urb's completion might still need calling */
-	if (likely (last != NULL)) {
-		fusbh200_urb_done(fusbh200, last->urb, last_status);
-		count++;
-		fusbh200_qtd_free (fusbh200, last);
-	}
-
-	/* Do we need to rescan for URBs dequeued during a giveback? */
-	if (unlikely(qh->needs_rescan)) {
-		/* If the QH is already unlinked, do the rescan now. */
-		if (state == QH_STATE_IDLE)
-			goto rescan;
-
-		/* Otherwise we have to wait until the QH is fully unlinked.
-		 * Our caller will start an unlink if qh->needs_rescan is
-		 * set.  But if an unlink has already started, nothing needs
-		 * to be done.
-		 */
-		if (state != QH_STATE_LINKED)
-			qh->needs_rescan = 0;
-	}
-
-	/* restore original state; caller must unlink or relink */
-	qh->qh_state = state;
-
-	/* be sure the hardware's done with the qh before refreshing
-	 * it after fault cleanup, or recovering from silicon wrongly
-	 * overlaying the dummy qtd (which reduces DMA chatter).
-	 */
-	if (stopped != 0 || hw->hw_qtd_next == FUSBH200_LIST_END(fusbh200)) {
-		switch (state) {
-		case QH_STATE_IDLE:
-			qh_refresh(fusbh200, qh);
-			break;
-		case QH_STATE_LINKED:
-			/* We won't refresh a QH that's linked (after the HC
-			 * stopped the queue).  That avoids a race:
-			 *  - HC reads first part of QH;
-			 *  - CPU updates that first part and the token;
-			 *  - HC reads rest of that QH, including token
-			 * Result:  HC gets an inconsistent image, and then
-			 * DMAs to/from the wrong memory (corrupting it).
-			 *
-			 * That should be rare for interrupt transfers,
-			 * except maybe high bandwidth ...
-			 */
-
-			/* Tell the caller to start an unlink */
-			qh->needs_rescan = 1;
-			break;
-		/* otherwise, unlink already started */
-		}
-	}
-
-	return count;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// high bandwidth multiplier, as encoded in highspeed endpoint descriptors
-#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
-// ... and packet size, for any kind of endpoint descriptor
-#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
-
-/*
- * reverse of qh_urb_transaction:  free a list of TDs.
- * used for cleanup after errors, before HC sees an URB's TDs.
- */
-static void qtd_list_free (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list
-) {
-	struct list_head	*entry, *temp;
-
-	list_for_each_safe (entry, temp, qtd_list) {
-		struct fusbh200_qtd	*qtd;
-
-		qtd = list_entry (entry, struct fusbh200_qtd, qtd_list);
-		list_del (&qtd->qtd_list);
-		fusbh200_qtd_free (fusbh200, qtd);
-	}
-}
-
-/*
- * create a list of filled qtds for this URB; won't link into qh.
- */
-static struct list_head *
-qh_urb_transaction (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*head,
-	gfp_t			flags
-) {
-	struct fusbh200_qtd		*qtd, *qtd_prev;
-	dma_addr_t		buf;
-	int			len, this_sg_len, maxpacket;
-	int			is_input;
-	u32			token;
-	int			i;
-	struct scatterlist	*sg;
-
-	/*
-	 * URBs map to sequences of QTDs:  one logical transaction
-	 */
-	qtd = fusbh200_qtd_alloc (fusbh200, flags);
-	if (unlikely (!qtd))
-		return NULL;
-	list_add_tail (&qtd->qtd_list, head);
-	qtd->urb = urb;
-
-	token = QTD_STS_ACTIVE;
-	token |= (FUSBH200_TUNE_CERR << 10);
-	/* for split transactions, SplitXState initialized to zero */
-
-	len = urb->transfer_buffer_length;
-	is_input = usb_pipein (urb->pipe);
-	if (usb_pipecontrol (urb->pipe)) {
-		/* SETUP pid */
-		qtd_fill(fusbh200, qtd, urb->setup_dma,
-				sizeof (struct usb_ctrlrequest),
-				token | (2 /* "setup" */ << 8), 8);
-
-		/* ... and always at least one more pid */
-		token ^= QTD_TOGGLE;
-		qtd_prev = qtd;
-		qtd = fusbh200_qtd_alloc (fusbh200, flags);
-		if (unlikely (!qtd))
-			goto cleanup;
-		qtd->urb = urb;
-		qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-		list_add_tail (&qtd->qtd_list, head);
-
-		/* for zero length DATA stages, STATUS is always IN */
-		if (len == 0)
-			token |= (1 /* "in" */ << 8);
-	}
-
-	/*
-	 * data transfer stage:  buffer setup
-	 */
-	i = urb->num_mapped_sgs;
-	if (len > 0 && i > 0) {
-		sg = urb->sg;
-		buf = sg_dma_address(sg);
-
-		/* urb->transfer_buffer_length may be smaller than the
-		 * size of the scatterlist (or vice versa)
-		 */
-		this_sg_len = min_t(int, sg_dma_len(sg), len);
-	} else {
-		sg = NULL;
-		buf = urb->transfer_dma;
-		this_sg_len = len;
-	}
-
-	if (is_input)
-		token |= (1 /* "in" */ << 8);
-	/* else it's already initted to "out" pid (0 << 8) */
-
-	maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input));
-
-	/*
-	 * buffer gets wrapped in one or more qtds;
-	 * last one may be "short" (including zero len)
-	 * and may serve as a control status ack
-	 */
-	for (;;) {
-		int this_qtd_len;
-
-		this_qtd_len = qtd_fill(fusbh200, qtd, buf, this_sg_len, token,
-				maxpacket);
-		this_sg_len -= this_qtd_len;
-		len -= this_qtd_len;
-		buf += this_qtd_len;
-
-		/*
-		 * short reads advance to a "magic" dummy instead of the next
-		 * qtd ... that forces the queue to stop, for manual cleanup.
-		 * (this will usually be overridden later.)
-		 */
-		if (is_input)
-			qtd->hw_alt_next = fusbh200->async->hw->hw_alt_next;
-
-		/* qh makes control packets use qtd toggle; maybe switch it */
-		if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0)
-			token ^= QTD_TOGGLE;
-
-		if (likely(this_sg_len <= 0)) {
-			if (--i <= 0 || len <= 0)
-				break;
-			sg = sg_next(sg);
-			buf = sg_dma_address(sg);
-			this_sg_len = min_t(int, sg_dma_len(sg), len);
-		}
-
-		qtd_prev = qtd;
-		qtd = fusbh200_qtd_alloc (fusbh200, flags);
-		if (unlikely (!qtd))
-			goto cleanup;
-		qtd->urb = urb;
-		qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-		list_add_tail (&qtd->qtd_list, head);
-	}
-
-	/*
-	 * unless the caller requires manual cleanup after short reads,
-	 * have the alt_next mechanism keep the queue running after the
-	 * last data qtd (the only one, for control and most other cases).
-	 */
-	if (likely ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0
-				|| usb_pipecontrol (urb->pipe)))
-		qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-
-	/*
-	 * control requests may need a terminating data "status" ack;
-	 * other OUT ones may need a terminating short packet
-	 * (zero length).
-	 */
-	if (likely (urb->transfer_buffer_length != 0)) {
-		int	one_more = 0;
-
-		if (usb_pipecontrol (urb->pipe)) {
-			one_more = 1;
-			token ^= 0x0100;	/* "in" <--> "out"  */
-			token |= QTD_TOGGLE;	/* force DATA1 */
-		} else if (usb_pipeout(urb->pipe)
-				&& (urb->transfer_flags & URB_ZERO_PACKET)
-				&& !(urb->transfer_buffer_length % maxpacket)) {
-			one_more = 1;
-		}
-		if (one_more) {
-			qtd_prev = qtd;
-			qtd = fusbh200_qtd_alloc (fusbh200, flags);
-			if (unlikely (!qtd))
-				goto cleanup;
-			qtd->urb = urb;
-			qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-			list_add_tail (&qtd->qtd_list, head);
-
-			/* never any data in such packets */
-			qtd_fill(fusbh200, qtd, 0, 0, token, 0);
-		}
-	}
-
-	/* by default, enable interrupt on urb completion */
-	if (likely (!(urb->transfer_flags & URB_NO_INTERRUPT)))
-		qtd->hw_token |= cpu_to_hc32(fusbh200, QTD_IOC);
-	return head;
-
-cleanup:
-	qtd_list_free (fusbh200, urb, head);
-	return NULL;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// Would be best to create all qh's from config descriptors,
-// when each interface/altsetting is established.  Unlink
-// any previous qh and cancel its urbs first; endpoints are
-// implicitly reset then (data toggle too).
-// That'd mean updating how usbcore talks to HCDs. (2.7?)
-
-
-/*
- * Each QH holds a qtd list; a QH is used for everything except iso.
- *
- * For interrupt urbs, the scheduler must set the microframe scheduling
- * mask(s) each time the QH gets scheduled.  For highspeed, that's
- * just one microframe in the s-mask.  For split interrupt transactions
- * there are additional complications: c-mask, maybe FSTNs.
- */
-static struct fusbh200_qh *
-qh_make (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	gfp_t			flags
-) {
-	struct fusbh200_qh		*qh = fusbh200_qh_alloc (fusbh200, flags);
-	u32			info1 = 0, info2 = 0;
-	int			is_input, type;
-	int			maxp = 0;
-	struct usb_tt		*tt = urb->dev->tt;
-	struct fusbh200_qh_hw	*hw;
-
-	if (!qh)
-		return qh;
-
-	/*
-	 * init endpoint/device data for this QH
-	 */
-	info1 |= usb_pipeendpoint (urb->pipe) << 8;
-	info1 |= usb_pipedevice (urb->pipe) << 0;
-
-	is_input = usb_pipein (urb->pipe);
-	type = usb_pipetype (urb->pipe);
-	maxp = usb_maxpacket (urb->dev, urb->pipe, !is_input);
-
-	/* 1024 byte maxpacket is a hardware ceiling.  High bandwidth
-	 * acts like up to 3KB, but is built from smaller packets.
-	 */
-	if (max_packet(maxp) > 1024) {
-		fusbh200_dbg(fusbh200, "bogus qh maxpacket %d\n", max_packet(maxp));
-		goto done;
-	}
-
-	/* Compute interrupt scheduling parameters just once, and save.
-	 * - allowing for high bandwidth, how many nsec/uframe are used?
-	 * - split transactions need a second CSPLIT uframe; same question
-	 * - splits also need a schedule gap (for full/low speed I/O)
-	 * - qh has a polling interval
-	 *
-	 * For control/bulk requests, the HC or TT handles these.
-	 */
-	if (type == PIPE_INTERRUPT) {
-		qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH,
-				is_input, 0,
-				hb_mult(maxp) * max_packet(maxp)));
-		qh->start = NO_FRAME;
-
-		if (urb->dev->speed == USB_SPEED_HIGH) {
-			qh->c_usecs = 0;
-			qh->gap_uf = 0;
-
-			qh->period = urb->interval >> 3;
-			if (qh->period == 0 && urb->interval != 1) {
-				/* NOTE interval 2 or 4 uframes could work.
-				 * But interval 1 scheduling is simpler, and
-				 * includes high bandwidth.
-				 */
-				urb->interval = 1;
-			} else if (qh->period > fusbh200->periodic_size) {
-				qh->period = fusbh200->periodic_size;
-				urb->interval = qh->period << 3;
-			}
-		} else {
-			int		think_time;
-
-			/* gap is f(FS/LS transfer times) */
-			qh->gap_uf = 1 + usb_calc_bus_time (urb->dev->speed,
-					is_input, 0, maxp) / (125 * 1000);
-
-			/* FIXME this just approximates SPLIT/CSPLIT times */
-			if (is_input) {		// SPLIT, gap, CSPLIT+DATA
-				qh->c_usecs = qh->usecs + HS_USECS (0);
-				qh->usecs = HS_USECS (1);
-			} else {		// SPLIT+DATA, gap, CSPLIT
-				qh->usecs += HS_USECS (1);
-				qh->c_usecs = HS_USECS (0);
-			}
-
-			think_time = tt ? tt->think_time : 0;
-			qh->tt_usecs = NS_TO_US (think_time +
-					usb_calc_bus_time (urb->dev->speed,
-					is_input, 0, max_packet (maxp)));
-			qh->period = urb->interval;
-			if (qh->period > fusbh200->periodic_size) {
-				qh->period = fusbh200->periodic_size;
-				urb->interval = qh->period;
-			}
-		}
-	}
-
-	/* support for tt scheduling, and access to toggles */
-	qh->dev = urb->dev;
-
-	/* using TT? */
-	switch (urb->dev->speed) {
-	case USB_SPEED_LOW:
-		info1 |= QH_LOW_SPEED;
-		/* FALL THROUGH */
-
-	case USB_SPEED_FULL:
-		/* EPS 0 means "full" */
-		if (type != PIPE_INTERRUPT)
-			info1 |= (FUSBH200_TUNE_RL_TT << 28);
-		if (type == PIPE_CONTROL) {
-			info1 |= QH_CONTROL_EP;		/* for TT */
-			info1 |= QH_TOGGLE_CTL;		/* toggle from qtd */
-		}
-		info1 |= maxp << 16;
-
-		info2 |= (FUSBH200_TUNE_MULT_TT << 30);
-
-		/* Some Freescale processors have an erratum in which the
-		 * port number in the queue head was 0..N-1 instead of 1..N.
-		 */
-		if (fusbh200_has_fsl_portno_bug(fusbh200))
-			info2 |= (urb->dev->ttport-1) << 23;
-		else
-			info2 |= urb->dev->ttport << 23;
-
-		/* set the address of the TT; for TDI's integrated
-		 * root hub tt, leave it zeroed.
-		 */
-		if (tt && tt->hub != fusbh200_to_hcd(fusbh200)->self.root_hub)
-			info2 |= tt->hub->devnum << 16;
-
-		/* NOTE:  if (PIPE_INTERRUPT) { scheduler sets c-mask } */
-
-		break;
-
-	case USB_SPEED_HIGH:		/* no TT involved */
-		info1 |= QH_HIGH_SPEED;
-		if (type == PIPE_CONTROL) {
-			info1 |= (FUSBH200_TUNE_RL_HS << 28);
-			info1 |= 64 << 16;	/* usb2 fixed maxpacket */
-			info1 |= QH_TOGGLE_CTL;	/* toggle from qtd */
-			info2 |= (FUSBH200_TUNE_MULT_HS << 30);
-		} else if (type == PIPE_BULK) {
-			info1 |= (FUSBH200_TUNE_RL_HS << 28);
-			/* The USB spec says that high speed bulk endpoints
-			 * always use 512 byte maxpacket.  But some device
-			 * vendors decided to ignore that, and MSFT is happy
-			 * to help them do so.  So now people expect to use
-			 * such nonconformant devices with Linux too; sigh.
-			 */
-			info1 |= max_packet(maxp) << 16;
-			info2 |= (FUSBH200_TUNE_MULT_HS << 30);
-		} else {		/* PIPE_INTERRUPT */
-			info1 |= max_packet (maxp) << 16;
-			info2 |= hb_mult (maxp) << 30;
-		}
-		break;
-	default:
-		fusbh200_dbg(fusbh200, "bogus dev %p speed %d\n", urb->dev,
-			urb->dev->speed);
-done:
-		qh_destroy(fusbh200, qh);
-		return NULL;
-	}
-
-	/* NOTE:  if (PIPE_INTERRUPT) { scheduler sets s-mask } */
-
-	/* init as live, toggle clear, advance to dummy */
-	qh->qh_state = QH_STATE_IDLE;
-	hw = qh->hw;
-	hw->hw_info1 = cpu_to_hc32(fusbh200, info1);
-	hw->hw_info2 = cpu_to_hc32(fusbh200, info2);
-	qh->is_out = !is_input;
-	usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1);
-	qh_refresh (fusbh200, qh);
-	return qh;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void enable_async(struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->async_count++)
-		return;
-
-	/* Stop waiting to turn off the async schedule */
-	fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_ASYNC);
-
-	/* Don't start the schedule until ASS is 0 */
-	fusbh200_poll_ASS(fusbh200);
-	turn_on_io_watchdog(fusbh200);
-}
-
-static void disable_async(struct fusbh200_hcd *fusbh200)
-{
-	if (--fusbh200->async_count)
-		return;
-
-	/* The async schedule and async_unlink list are supposed to be empty */
-	WARN_ON(fusbh200->async->qh_next.qh || fusbh200->async_unlink);
-
-	/* Don't turn off the schedule until ASS is 1 */
-	fusbh200_poll_ASS(fusbh200);
-}
-
-/* move qh (and its qtds) onto async queue; maybe enable queue.  */
-
-static void qh_link_async (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	__hc32		dma = QH_NEXT(fusbh200, qh->qh_dma);
-	struct fusbh200_qh	*head;
-
-	/* Don't link a QH if there's a Clear-TT-Buffer pending */
-	if (unlikely(qh->clearing_tt))
-		return;
-
-	WARN_ON(qh->qh_state != QH_STATE_IDLE);
-
-	/* clear halt and/or toggle; and maybe recover from silicon quirk */
-	qh_refresh(fusbh200, qh);
-
-	/* splice right after start */
-	head = fusbh200->async;
-	qh->qh_next = head->qh_next;
-	qh->hw->hw_next = head->hw->hw_next;
-	wmb ();
-
-	head->qh_next.qh = qh;
-	head->hw->hw_next = dma;
-
-	qh->xacterrs = 0;
-	qh->qh_state = QH_STATE_LINKED;
-	/* qtd completions reported later by interrupt */
-
-	enable_async(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * For control/bulk/interrupt, return QH with these TDs appended.
- * Allocates and initializes the QH if necessary.
- * Returns null if it can't allocate a QH it needs to.
- * If the QH has TDs (urbs) already, that's great.
- */
-static struct fusbh200_qh *qh_append_tds (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	int			epnum,
-	void			**ptr
-)
-{
-	struct fusbh200_qh		*qh = NULL;
-	__hc32			qh_addr_mask = cpu_to_hc32(fusbh200, 0x7f);
-
-	qh = (struct fusbh200_qh *) *ptr;
-	if (unlikely (qh == NULL)) {
-		/* can't sleep here, we have fusbh200->lock... */
-		qh = qh_make (fusbh200, urb, GFP_ATOMIC);
-		*ptr = qh;
-	}
-	if (likely (qh != NULL)) {
-		struct fusbh200_qtd	*qtd;
-
-		if (unlikely (list_empty (qtd_list)))
-			qtd = NULL;
-		else
-			qtd = list_entry (qtd_list->next, struct fusbh200_qtd,
-					qtd_list);
-
-		/* control qh may need patching ... */
-		if (unlikely (epnum == 0)) {
-
-                        /* usb_reset_device() briefly reverts to address 0 */
-                        if (usb_pipedevice (urb->pipe) == 0)
-				qh->hw->hw_info1 &= ~qh_addr_mask;
-		}
-
-		/* just one way to queue requests: swap with the dummy qtd.
-		 * only hc or qh_refresh() ever modify the overlay.
-		 */
-		if (likely (qtd != NULL)) {
-			struct fusbh200_qtd		*dummy;
-			dma_addr_t		dma;
-			__hc32			token;
-
-			/* to avoid racing the HC, use the dummy td instead of
-			 * the first td of our list (becomes new dummy).  both
-			 * tds stay deactivated until we're done, when the
-			 * HC is allowed to fetch the old dummy (4.10.2).
-			 */
-			token = qtd->hw_token;
-			qtd->hw_token = HALT_BIT(fusbh200);
-
-			dummy = qh->dummy;
-
-			dma = dummy->qtd_dma;
-			*dummy = *qtd;
-			dummy->qtd_dma = dma;
-
-			list_del (&qtd->qtd_list);
-			list_add (&dummy->qtd_list, qtd_list);
-			list_splice_tail(qtd_list, &qh->qtd_list);
-
-			fusbh200_qtd_init(fusbh200, qtd, qtd->qtd_dma);
-			qh->dummy = qtd;
-
-			/* hc must see the new dummy at list end */
-			dma = qtd->qtd_dma;
-			qtd = list_entry (qh->qtd_list.prev,
-					struct fusbh200_qtd, qtd_list);
-			qtd->hw_next = QTD_NEXT(fusbh200, dma);
-
-			/* let the hc process these next qtds */
-			wmb ();
-			dummy->hw_token = token;
-
-			urb->hcpriv = qh;
-		}
-	}
-	return qh;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int
-submit_async (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	gfp_t			mem_flags
-) {
-	int			epnum;
-	unsigned long		flags;
-	struct fusbh200_qh		*qh = NULL;
-	int			rc;
-
-	epnum = urb->ep->desc.bEndpointAddress;
-
-#ifdef FUSBH200_URB_TRACE
-	{
-		struct fusbh200_qtd *qtd;
-		qtd = list_entry(qtd_list->next, struct fusbh200_qtd, qtd_list);
-		fusbh200_dbg(fusbh200,
-			 "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-			 __func__, urb->dev->devpath, urb,
-			 epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
-			 urb->transfer_buffer_length,
-			 qtd, urb->ep->hcpriv);
-	}
-#endif
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
-		rc = -ESHUTDOWN;
-		goto done;
-	}
-	rc = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
-	if (unlikely(rc))
-		goto done;
-
-	qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv);
-	if (unlikely(qh == NULL)) {
-		usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-		rc = -ENOMEM;
-		goto done;
-	}
-
-	/* Control/bulk operations through TTs don't need scheduling,
-	 * the HC and TT handle it when the TT has a buffer ready.
-	 */
-	if (likely (qh->qh_state == QH_STATE_IDLE))
-		qh_link_async(fusbh200, qh);
- done:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	if (unlikely (qh == NULL))
-		qtd_list_free (fusbh200, urb, qtd_list);
-	return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void single_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qh		*prev;
-
-	/* Add to the end of the list of QHs waiting for the next IAAD */
-	qh->qh_state = QH_STATE_UNLINK;
-	if (fusbh200->async_unlink)
-		fusbh200->async_unlink_last->unlink_next = qh;
-	else
-		fusbh200->async_unlink = qh;
-	fusbh200->async_unlink_last = qh;
-
-	/* Unlink it from the schedule */
-	prev = fusbh200->async;
-	while (prev->qh_next.qh != qh)
-		prev = prev->qh_next.qh;
-
-	prev->hw->hw_next = qh->hw->hw_next;
-	prev->qh_next = qh->qh_next;
-	if (fusbh200->qh_scan_next == qh)
-		fusbh200->qh_scan_next = qh->qh_next.qh;
-}
-
-static void start_iaa_cycle(struct fusbh200_hcd *fusbh200, bool nested)
-{
-	/*
-	 * Do nothing if an IAA cycle is already running or
-	 * if one will be started shortly.
-	 */
-	if (fusbh200->async_iaa || fusbh200->async_unlinking)
-		return;
-
-	/* Do all the waiting QHs at once */
-	fusbh200->async_iaa = fusbh200->async_unlink;
-	fusbh200->async_unlink = NULL;
-
-	/* If the controller isn't running, we don't have to wait for it */
-	if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING)) {
-		if (!nested)		/* Avoid recursion */
-			end_unlink_async(fusbh200);
-
-	/* Otherwise start a new IAA cycle */
-	} else if (likely(fusbh200->rh_state == FUSBH200_RH_RUNNING)) {
-		/* Make sure the unlinks are all visible to the hardware */
-		wmb();
-
-		fusbh200_writel(fusbh200, fusbh200->command | CMD_IAAD,
-				&fusbh200->regs->command);
-		fusbh200_readl(fusbh200, &fusbh200->regs->command);
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IAA_WATCHDOG, true);
-	}
-}
-
-/* the async qh for the qtds being unlinked are now gone from the HC */
-
-static void end_unlink_async(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh;
-
-	/* Process the idle QHs */
- restart:
-	fusbh200->async_unlinking = true;
-	while (fusbh200->async_iaa) {
-		qh = fusbh200->async_iaa;
-		fusbh200->async_iaa = qh->unlink_next;
-		qh->unlink_next = NULL;
-
-		qh->qh_state = QH_STATE_IDLE;
-		qh->qh_next.qh = NULL;
-
-		qh_completions(fusbh200, qh);
-		if (!list_empty(&qh->qtd_list) &&
-				fusbh200->rh_state == FUSBH200_RH_RUNNING)
-			qh_link_async(fusbh200, qh);
-		disable_async(fusbh200);
-	}
-	fusbh200->async_unlinking = false;
-
-	/* Start a new IAA cycle if any QHs are waiting for it */
-	if (fusbh200->async_unlink) {
-		start_iaa_cycle(fusbh200, true);
-		if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING))
-			goto restart;
-	}
-}
-
-static void unlink_empty_async(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh, *next;
-	bool			stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING);
-	bool			check_unlinks_later = false;
-
-	/* Unlink all the async QHs that have been empty for a timer cycle */
-	next = fusbh200->async->qh_next.qh;
-	while (next) {
-		qh = next;
-		next = qh->qh_next.qh;
-
-		if (list_empty(&qh->qtd_list) &&
-				qh->qh_state == QH_STATE_LINKED) {
-			if (!stopped && qh->unlink_cycle ==
-					fusbh200->async_unlink_cycle)
-				check_unlinks_later = true;
-			else
-				single_unlink_async(fusbh200, qh);
-		}
-	}
-
-	/* Start a new IAA cycle if any QHs are waiting for it */
-	if (fusbh200->async_unlink)
-		start_iaa_cycle(fusbh200, false);
-
-	/* QHs that haven't been empty for long enough will be handled later */
-	if (check_unlinks_later) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true);
-		++fusbh200->async_unlink_cycle;
-	}
-}
-
-/* makes sure the async qh will become idle */
-/* caller must own fusbh200->lock */
-
-static void start_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	/*
-	 * If the QH isn't linked then there's nothing we can do
-	 * unless we were called during a giveback, in which case
-	 * qh_completions() has to deal with it.
-	 */
-	if (qh->qh_state != QH_STATE_LINKED) {
-		if (qh->qh_state == QH_STATE_COMPLETING)
-			qh->needs_rescan = 1;
-		return;
-	}
-
-	single_unlink_async(fusbh200, qh);
-	start_iaa_cycle(fusbh200, false);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void scan_async (struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh;
-	bool			check_unlinks_later = false;
-
-	fusbh200->qh_scan_next = fusbh200->async->qh_next.qh;
-	while (fusbh200->qh_scan_next) {
-		qh = fusbh200->qh_scan_next;
-		fusbh200->qh_scan_next = qh->qh_next.qh;
- rescan:
-		/* clean any finished work for this qh */
-		if (!list_empty(&qh->qtd_list)) {
-			int temp;
-
-			/*
-			 * Unlinks could happen here; completion reporting
-			 * drops the lock.  That's why fusbh200->qh_scan_next
-			 * always holds the next qh to scan; if the next qh
-			 * gets unlinked then fusbh200->qh_scan_next is adjusted
-			 * in single_unlink_async().
-			 */
-			temp = qh_completions(fusbh200, qh);
-			if (qh->needs_rescan) {
-				start_unlink_async(fusbh200, qh);
-			} else if (list_empty(&qh->qtd_list)
-					&& qh->qh_state == QH_STATE_LINKED) {
-				qh->unlink_cycle = fusbh200->async_unlink_cycle;
-				check_unlinks_later = true;
-			} else if (temp != 0)
-				goto rescan;
-		}
-	}
-
-	/*
-	 * Unlink empty entries, reducing DMA usage as well
-	 * as HCD schedule-scanning costs.  Delay for any qh
-	 * we just scanned, there's a not-unusual case that it
-	 * doesn't stay idle for long.
-	 */
-	if (check_unlinks_later && fusbh200->rh_state == FUSBH200_RH_RUNNING &&
-			!(fusbh200->enabled_hrtimer_events &
-				BIT(FUSBH200_HRTIMER_ASYNC_UNLINKS))) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true);
-		++fusbh200->async_unlink_cycle;
-	}
-}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI scheduled transaction support:  interrupt, iso, split iso
- * These are called "periodic" transactions in the EHCI spec.
- *
- * Note that for interrupt transfers, the QH/QTD manipulation is shared
- * with the "asynchronous" transaction support (control/bulk transfers).
- * The only real difference is in how interrupt transfers are scheduled.
- *
- * For ISO, we make an "iso_stream" head to serve the same role as a QH.
- * It keeps track of every ITD (or SITD) that's linked, and holds enough
- * pre-calculated schedule data to make appending to the queue be quick.
- */
-
-static int fusbh200_get_frame (struct usb_hcd *hcd);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * periodic_next_shadow - return "next" pointer on shadow list
- * @periodic: host pointer to qh/itd
- * @tag: hardware tag for type of this record
- */
-static union fusbh200_shadow *
-periodic_next_shadow(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic,
-		__hc32 tag)
-{
-	switch (hc32_to_cpu(fusbh200, tag)) {
-	case Q_TYPE_QH:
-		return &periodic->qh->qh_next;
-	case Q_TYPE_FSTN:
-		return &periodic->fstn->fstn_next;
-	default:
-		return &periodic->itd->itd_next;
-	}
-}
-
-static __hc32 *
-shadow_next_periodic(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic,
-		__hc32 tag)
-{
-	switch (hc32_to_cpu(fusbh200, tag)) {
-	/* our fusbh200_shadow.qh is actually software part */
-	case Q_TYPE_QH:
-		return &periodic->qh->hw->hw_next;
-	/* others are hw parts */
-	default:
-		return periodic->hw_next;
-	}
-}
-
-/* caller must hold fusbh200->lock */
-static void periodic_unlink (struct fusbh200_hcd *fusbh200, unsigned frame, void *ptr)
-{
-	union fusbh200_shadow	*prev_p = &fusbh200->pshadow[frame];
-	__hc32			*hw_p = &fusbh200->periodic[frame];
-	union fusbh200_shadow	here = *prev_p;
-
-	/* find predecessor of "ptr"; hw and shadow lists are in sync */
-	while (here.ptr && here.ptr != ptr) {
-		prev_p = periodic_next_shadow(fusbh200, prev_p,
-				Q_NEXT_TYPE(fusbh200, *hw_p));
-		hw_p = shadow_next_periodic(fusbh200, &here,
-				Q_NEXT_TYPE(fusbh200, *hw_p));
-		here = *prev_p;
-	}
-	/* an interrupt entry (at list end) could have been shared */
-	if (!here.ptr)
-		return;
-
-	/* update shadow and hardware lists ... the old "next" pointers
-	 * from ptr may still be in use, the caller updates them.
-	 */
-	*prev_p = *periodic_next_shadow(fusbh200, &here,
-			Q_NEXT_TYPE(fusbh200, *hw_p));
-
-	*hw_p = *shadow_next_periodic(fusbh200, &here,
-				Q_NEXT_TYPE(fusbh200, *hw_p));
-}
-
-/* how many of the uframe's 125 usecs are allocated? */
-static unsigned short
-periodic_usecs (struct fusbh200_hcd *fusbh200, unsigned frame, unsigned uframe)
-{
-	__hc32			*hw_p = &fusbh200->periodic [frame];
-	union fusbh200_shadow	*q = &fusbh200->pshadow [frame];
-	unsigned		usecs = 0;
-	struct fusbh200_qh_hw	*hw;
-
-	while (q->ptr) {
-		switch (hc32_to_cpu(fusbh200, Q_NEXT_TYPE(fusbh200, *hw_p))) {
-		case Q_TYPE_QH:
-			hw = q->qh->hw;
-			/* is it in the S-mask? */
-			if (hw->hw_info2 & cpu_to_hc32(fusbh200, 1 << uframe))
-				usecs += q->qh->usecs;
-			/* ... or C-mask? */
-			if (hw->hw_info2 & cpu_to_hc32(fusbh200,
-					1 << (8 + uframe)))
-				usecs += q->qh->c_usecs;
-			hw_p = &hw->hw_next;
-			q = &q->qh->qh_next;
-			break;
-		// case Q_TYPE_FSTN:
-		default:
-			/* for "save place" FSTNs, count the relevant INTR
-			 * bandwidth from the previous frame
-			 */
-			if (q->fstn->hw_prev != FUSBH200_LIST_END(fusbh200)) {
-				fusbh200_dbg (fusbh200, "ignoring FSTN cost ...\n");
-			}
-			hw_p = &q->fstn->hw_next;
-			q = &q->fstn->fstn_next;
-			break;
-		case Q_TYPE_ITD:
-			if (q->itd->hw_transaction[uframe])
-				usecs += q->itd->stream->usecs;
-			hw_p = &q->itd->hw_next;
-			q = &q->itd->itd_next;
-			break;
-		}
-	}
-	if (usecs > fusbh200->uframe_periodic_max)
-		fusbh200_err (fusbh200, "uframe %d sched overrun: %d usecs\n",
-			frame * 8 + uframe, usecs);
-	return usecs;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int same_tt (struct usb_device *dev1, struct usb_device *dev2)
-{
-	if (!dev1->tt || !dev2->tt)
-		return 0;
-	if (dev1->tt != dev2->tt)
-		return 0;
-	if (dev1->tt->multi)
-		return dev1->ttport == dev2->ttport;
-	else
-		return 1;
-}
-
-/* return true iff the device's transaction translator is available
- * for a periodic transfer starting at the specified frame, using
- * all the uframes in the mask.
- */
-static int tt_no_collision (
-	struct fusbh200_hcd		*fusbh200,
-	unsigned		period,
-	struct usb_device	*dev,
-	unsigned		frame,
-	u32			uf_mask
-)
-{
-	if (period == 0)	/* error */
-		return 0;
-
-	/* note bandwidth wastage:  split never follows csplit
-	 * (different dev or endpoint) until the next uframe.
-	 * calling convention doesn't make that distinction.
-	 */
-	for (; frame < fusbh200->periodic_size; frame += period) {
-		union fusbh200_shadow	here;
-		__hc32			type;
-		struct fusbh200_qh_hw	*hw;
-
-		here = fusbh200->pshadow [frame];
-		type = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [frame]);
-		while (here.ptr) {
-			switch (hc32_to_cpu(fusbh200, type)) {
-			case Q_TYPE_ITD:
-				type = Q_NEXT_TYPE(fusbh200, here.itd->hw_next);
-				here = here.itd->itd_next;
-				continue;
-			case Q_TYPE_QH:
-				hw = here.qh->hw;
-				if (same_tt (dev, here.qh->dev)) {
-					u32		mask;
-
-					mask = hc32_to_cpu(fusbh200,
-							hw->hw_info2);
-					/* "knows" no gap is needed */
-					mask |= mask >> 8;
-					if (mask & uf_mask)
-						break;
-				}
-				type = Q_NEXT_TYPE(fusbh200, hw->hw_next);
-				here = here.qh->qh_next;
-				continue;
-			// case Q_TYPE_FSTN:
-			default:
-				fusbh200_dbg (fusbh200,
-					"periodic frame %d bogus type %d\n",
-					frame, type);
-			}
-
-			/* collision or error */
-			return 0;
-		}
-	}
-
-	/* no collision */
-	return 1;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void enable_periodic(struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->periodic_count++)
-		return;
-
-	/* Stop waiting to turn off the periodic schedule */
-	fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_PERIODIC);
-
-	/* Don't start the schedule until PSS is 0 */
-	fusbh200_poll_PSS(fusbh200);
-	turn_on_io_watchdog(fusbh200);
-}
-
-static void disable_periodic(struct fusbh200_hcd *fusbh200)
-{
-	if (--fusbh200->periodic_count)
-		return;
-
-	/* Don't turn off the schedule until PSS is 1 */
-	fusbh200_poll_PSS(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* periodic schedule slots have iso tds (normal or split) first, then a
- * sparse tree for active interrupt transfers.
- *
- * this just links in a qh; caller guarantees uframe masks are set right.
- * no FSTN support (yet; fusbh200 0.96+)
- */
-static void qh_link_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	unsigned	i;
-	unsigned	period = qh->period;
-
-	dev_dbg (&qh->dev->dev,
-		"link qh%d-%04x/%p start %d [%d/%d us]\n",
-		period, hc32_to_cpup(fusbh200, &qh->hw->hw_info2)
-			& (QH_CMASK | QH_SMASK),
-		qh, qh->start, qh->usecs, qh->c_usecs);
-
-	/* high bandwidth, or otherwise every microframe */
-	if (period == 0)
-		period = 1;
-
-	for (i = qh->start; i < fusbh200->periodic_size; i += period) {
-		union fusbh200_shadow	*prev = &fusbh200->pshadow[i];
-		__hc32			*hw_p = &fusbh200->periodic[i];
-		union fusbh200_shadow	here = *prev;
-		__hc32			type = 0;
-
-		/* skip the iso nodes at list head */
-		while (here.ptr) {
-			type = Q_NEXT_TYPE(fusbh200, *hw_p);
-			if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH))
-				break;
-			prev = periodic_next_shadow(fusbh200, prev, type);
-			hw_p = shadow_next_periodic(fusbh200, &here, type);
-			here = *prev;
-		}
-
-		/* sorting each branch by period (slow-->fast)
-		 * enables sharing interior tree nodes
-		 */
-		while (here.ptr && qh != here.qh) {
-			if (qh->period > here.qh->period)
-				break;
-			prev = &here.qh->qh_next;
-			hw_p = &here.qh->hw->hw_next;
-			here = *prev;
-		}
-		/* link in this qh, unless some earlier pass did that */
-		if (qh != here.qh) {
-			qh->qh_next = here;
-			if (here.qh)
-				qh->hw->hw_next = *hw_p;
-			wmb ();
-			prev->qh = qh;
-			*hw_p = QH_NEXT (fusbh200, qh->qh_dma);
-		}
-	}
-	qh->qh_state = QH_STATE_LINKED;
-	qh->xacterrs = 0;
-
-	/* update per-qh bandwidth for usbfs */
-	fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated += qh->period
-		? ((qh->usecs + qh->c_usecs) / qh->period)
-		: (qh->usecs * 8);
-
-	list_add(&qh->intr_node, &fusbh200->intr_qh_list);
-
-	/* maybe enable periodic schedule processing */
-	++fusbh200->intr_count;
-	enable_periodic(fusbh200);
-}
-
-static void qh_unlink_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	unsigned	i;
-	unsigned	period;
-
-	/*
-	 * If qh is for a low/full-speed device, simply unlinking it
-	 * could interfere with an ongoing split transaction.  To unlink
-	 * it safely would require setting the QH_INACTIVATE bit and
-	 * waiting at least one frame, as described in EHCI 4.12.2.5.
-	 *
-	 * We won't bother with any of this.  Instead, we assume that the
-	 * only reason for unlinking an interrupt QH while the current URB
-	 * is still active is to dequeue all the URBs (flush the whole
-	 * endpoint queue).
-	 *
-	 * If rebalancing the periodic schedule is ever implemented, this
-	 * approach will no longer be valid.
-	 */
-
-	/* high bandwidth, or otherwise part of every microframe */
-	if ((period = qh->period) == 0)
-		period = 1;
-
-	for (i = qh->start; i < fusbh200->periodic_size; i += period)
-		periodic_unlink (fusbh200, i, qh);
-
-	/* update per-qh bandwidth for usbfs */
-	fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated -= qh->period
-		? ((qh->usecs + qh->c_usecs) / qh->period)
-		: (qh->usecs * 8);
-
-	dev_dbg (&qh->dev->dev,
-		"unlink qh%d-%04x/%p start %d [%d/%d us]\n",
-		qh->period,
-		hc32_to_cpup(fusbh200, &qh->hw->hw_info2) & (QH_CMASK | QH_SMASK),
-		qh, qh->start, qh->usecs, qh->c_usecs);
-
-	/* qh->qh_next still "live" to HC */
-	qh->qh_state = QH_STATE_UNLINK;
-	qh->qh_next.ptr = NULL;
-
-	if (fusbh200->qh_scan_next == qh)
-		fusbh200->qh_scan_next = list_entry(qh->intr_node.next,
-				struct fusbh200_qh, intr_node);
-	list_del(&qh->intr_node);
-}
-
-static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	/* If the QH isn't linked then there's nothing we can do
-	 * unless we were called during a giveback, in which case
-	 * qh_completions() has to deal with it.
-	 */
-	if (qh->qh_state != QH_STATE_LINKED) {
-		if (qh->qh_state == QH_STATE_COMPLETING)
-			qh->needs_rescan = 1;
-		return;
-	}
-
-	qh_unlink_periodic (fusbh200, qh);
-
-	/* Make sure the unlinks are visible before starting the timer */
-	wmb();
-
-	/*
-	 * The EHCI spec doesn't say how long it takes the controller to
-	 * stop accessing an unlinked interrupt QH.  The timer delay is
-	 * 9 uframes; presumably that will be long enough.
-	 */
-	qh->unlink_cycle = fusbh200->intr_unlink_cycle;
-
-	/* New entries go at the end of the intr_unlink list */
-	if (fusbh200->intr_unlink)
-		fusbh200->intr_unlink_last->unlink_next = qh;
-	else
-		fusbh200->intr_unlink = qh;
-	fusbh200->intr_unlink_last = qh;
-
-	if (fusbh200->intr_unlinking)
-		;	/* Avoid recursive calls */
-	else if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
-		fusbh200_handle_intr_unlinks(fusbh200);
-	else if (fusbh200->intr_unlink == qh) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true);
-		++fusbh200->intr_unlink_cycle;
-	}
-}
-
-static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qh_hw	*hw = qh->hw;
-	int			rc;
-
-	qh->qh_state = QH_STATE_IDLE;
-	hw->hw_next = FUSBH200_LIST_END(fusbh200);
-
-	qh_completions(fusbh200, qh);
-
-	/* reschedule QH iff another request is queued */
-	if (!list_empty(&qh->qtd_list) && fusbh200->rh_state == FUSBH200_RH_RUNNING) {
-		rc = qh_schedule(fusbh200, qh);
-
-		/* An error here likely indicates handshake failure
-		 * or no space left in the schedule.  Neither fault
-		 * should happen often ...
-		 *
-		 * FIXME kill the now-dysfunctional queued urbs
-		 */
-		if (rc != 0)
-			fusbh200_err(fusbh200, "can't reschedule qh %p, err %d\n",
-					qh, rc);
-	}
-
-	/* maybe turn off periodic schedule */
-	--fusbh200->intr_count;
-	disable_periodic(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int check_period (
-	struct fusbh200_hcd *fusbh200,
-	unsigned	frame,
-	unsigned	uframe,
-	unsigned	period,
-	unsigned	usecs
-) {
-	int		claimed;
-
-	/* complete split running into next frame?
-	 * given FSTN support, we could sometimes check...
-	 */
-	if (uframe >= 8)
-		return 0;
-
-	/* convert "usecs we need" to "max already claimed" */
-	usecs = fusbh200->uframe_periodic_max - usecs;
-
-	/* we "know" 2 and 4 uframe intervals were rejected; so
-	 * for period 0, check _every_ microframe in the schedule.
-	 */
-	if (unlikely (period == 0)) {
-		do {
-			for (uframe = 0; uframe < 7; uframe++) {
-				claimed = periodic_usecs (fusbh200, frame, uframe);
-				if (claimed > usecs)
-					return 0;
-			}
-		} while ((frame += 1) < fusbh200->periodic_size);
-
-	/* just check the specified uframe, at that period */
-	} else {
-		do {
-			claimed = periodic_usecs (fusbh200, frame, uframe);
-			if (claimed > usecs)
-				return 0;
-		} while ((frame += period) < fusbh200->periodic_size);
-	}
-
-	// success!
-	return 1;
-}
-
-static int check_intr_schedule (
-	struct fusbh200_hcd		*fusbh200,
-	unsigned		frame,
-	unsigned		uframe,
-	const struct fusbh200_qh	*qh,
-	__hc32			*c_maskp
-)
-{
-	int		retval = -ENOSPC;
-	u8		mask = 0;
-
-	if (qh->c_usecs && uframe >= 6)		/* FSTN territory? */
-		goto done;
-
-	if (!check_period (fusbh200, frame, uframe, qh->period, qh->usecs))
-		goto done;
-	if (!qh->c_usecs) {
-		retval = 0;
-		*c_maskp = 0;
-		goto done;
-	}
-
-	/* Make sure this tt's buffer is also available for CSPLITs.
-	 * We pessimize a bit; probably the typical full speed case
-	 * doesn't need the second CSPLIT.
-	 *
-	 * NOTE:  both SPLIT and CSPLIT could be checked in just
-	 * one smart pass...
-	 */
-	mask = 0x03 << (uframe + qh->gap_uf);
-	*c_maskp = cpu_to_hc32(fusbh200, mask << 8);
-
-	mask |= 1 << uframe;
-	if (tt_no_collision (fusbh200, qh->period, qh->dev, frame, mask)) {
-		if (!check_period (fusbh200, frame, uframe + qh->gap_uf + 1,
-					qh->period, qh->c_usecs))
-			goto done;
-		if (!check_period (fusbh200, frame, uframe + qh->gap_uf,
-					qh->period, qh->c_usecs))
-			goto done;
-		retval = 0;
-	}
-done:
-	return retval;
-}
-
-/* "first fit" scheduling policy used the first time through,
- * or when the previous schedule slot can't be re-used.
- */
-static int qh_schedule(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	int		status;
-	unsigned	uframe;
-	__hc32		c_mask;
-	unsigned	frame;		/* 0..(qh->period - 1), or NO_FRAME */
-	struct fusbh200_qh_hw	*hw = qh->hw;
-
-	qh_refresh(fusbh200, qh);
-	hw->hw_next = FUSBH200_LIST_END(fusbh200);
-	frame = qh->start;
-
-	/* reuse the previous schedule slots, if we can */
-	if (frame < qh->period) {
-		uframe = ffs(hc32_to_cpup(fusbh200, &hw->hw_info2) & QH_SMASK);
-		status = check_intr_schedule (fusbh200, frame, --uframe,
-				qh, &c_mask);
-	} else {
-		uframe = 0;
-		c_mask = 0;
-		status = -ENOSPC;
-	}
-
-	/* else scan the schedule to find a group of slots such that all
-	 * uframes have enough periodic bandwidth available.
-	 */
-	if (status) {
-		/* "normal" case, uframing flexible except with splits */
-		if (qh->period) {
-			int		i;
-
-			for (i = qh->period; status && i > 0; --i) {
-				frame = ++fusbh200->random_frame % qh->period;
-				for (uframe = 0; uframe < 8; uframe++) {
-					status = check_intr_schedule (fusbh200,
-							frame, uframe, qh,
-							&c_mask);
-					if (status == 0)
-						break;
-				}
-			}
-
-		/* qh->period == 0 means every uframe */
-		} else {
-			frame = 0;
-			status = check_intr_schedule (fusbh200, 0, 0, qh, &c_mask);
-		}
-		if (status)
-			goto done;
-		qh->start = frame;
-
-		/* reset S-frame and (maybe) C-frame masks */
-		hw->hw_info2 &= cpu_to_hc32(fusbh200, ~(QH_CMASK | QH_SMASK));
-		hw->hw_info2 |= qh->period
-			? cpu_to_hc32(fusbh200, 1 << uframe)
-			: cpu_to_hc32(fusbh200, QH_SMASK);
-		hw->hw_info2 |= c_mask;
-	} else
-		fusbh200_dbg (fusbh200, "reused qh %p schedule\n", qh);
-
-	/* stuff into the periodic schedule */
-	qh_link_periodic(fusbh200, qh);
-done:
-	return status;
-}
-
-static int intr_submit (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	gfp_t			mem_flags
-) {
-	unsigned		epnum;
-	unsigned long		flags;
-	struct fusbh200_qh		*qh;
-	int			status;
-	struct list_head	empty;
-
-	/* get endpoint and transfer/schedule data */
-	epnum = urb->ep->desc.bEndpointAddress;
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
-		status = -ESHUTDOWN;
-		goto done_not_linked;
-	}
-	status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
-	if (unlikely(status))
-		goto done_not_linked;
-
-	/* get qh and force any scheduling errors */
-	INIT_LIST_HEAD (&empty);
-	qh = qh_append_tds(fusbh200, urb, &empty, epnum, &urb->ep->hcpriv);
-	if (qh == NULL) {
-		status = -ENOMEM;
-		goto done;
-	}
-	if (qh->qh_state == QH_STATE_IDLE) {
-		if ((status = qh_schedule (fusbh200, qh)) != 0)
-			goto done;
-	}
-
-	/* then queue the urb's tds to the qh */
-	qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv);
-	BUG_ON (qh == NULL);
-
-	/* ... update usbfs periodic stats */
-	fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs++;
-
-done:
-	if (unlikely(status))
-		usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-done_not_linked:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	if (status)
-		qtd_list_free (fusbh200, urb, qtd_list);
-
-	return status;
-}
-
-static void scan_intr(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh;
-
-	list_for_each_entry_safe(qh, fusbh200->qh_scan_next, &fusbh200->intr_qh_list,
-			intr_node) {
- rescan:
-		/* clean any finished work for this qh */
-		if (!list_empty(&qh->qtd_list)) {
-			int temp;
-
-			/*
-			 * Unlinks could happen here; completion reporting
-			 * drops the lock.  That's why fusbh200->qh_scan_next
-			 * always holds the next qh to scan; if the next qh
-			 * gets unlinked then fusbh200->qh_scan_next is adjusted
-			 * in qh_unlink_periodic().
-			 */
-			temp = qh_completions(fusbh200, qh);
-			if (unlikely(qh->needs_rescan ||
-					(list_empty(&qh->qtd_list) &&
-						qh->qh_state == QH_STATE_LINKED)))
-				start_unlink_intr(fusbh200, qh);
-			else if (temp != 0)
-				goto rescan;
-		}
-	}
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* fusbh200_iso_stream ops work with both ITD and SITD */
-
-static struct fusbh200_iso_stream *
-iso_stream_alloc (gfp_t mem_flags)
-{
-	struct fusbh200_iso_stream *stream;
-
-	stream = kzalloc(sizeof *stream, mem_flags);
-	if (likely (stream != NULL)) {
-		INIT_LIST_HEAD(&stream->td_list);
-		INIT_LIST_HEAD(&stream->free_list);
-		stream->next_uframe = -1;
-	}
-	return stream;
-}
-
-static void
-iso_stream_init (
-	struct fusbh200_hcd		*fusbh200,
-	struct fusbh200_iso_stream	*stream,
-	struct usb_device	*dev,
-	int			pipe,
-	unsigned		interval
-)
-{
-	u32			buf1;
-	unsigned		epnum, maxp;
-	int			is_input;
-	long			bandwidth;
-	unsigned 		multi;
-
-	/*
-	 * this might be a "high bandwidth" highspeed endpoint,
-	 * as encoded in the ep descriptor's wMaxPacket field
-	 */
-	epnum = usb_pipeendpoint (pipe);
-	is_input = usb_pipein (pipe) ? USB_DIR_IN : 0;
-	maxp = usb_maxpacket(dev, pipe, !is_input);
-	if (is_input) {
-		buf1 = (1 << 11);
-	} else {
-		buf1 = 0;
-	}
-
-	maxp = max_packet(maxp);
-	multi = hb_mult(maxp);
-	buf1 |= maxp;
-	maxp *= multi;
-
-	stream->buf0 = cpu_to_hc32(fusbh200, (epnum << 8) | dev->devnum);
-	stream->buf1 = cpu_to_hc32(fusbh200, buf1);
-	stream->buf2 = cpu_to_hc32(fusbh200, multi);
-
-	/* usbfs wants to report the average usecs per frame tied up
-	 * when transfers on this endpoint are scheduled ...
-	 */
-	if (dev->speed == USB_SPEED_FULL) {
-		interval <<= 3;
-		stream->usecs = NS_TO_US(usb_calc_bus_time(dev->speed,
-				is_input, 1, maxp));
-		stream->usecs /= 8;
-	} else {
-		stream->highspeed = 1;
-		stream->usecs = HS_USECS_ISO (maxp);
-	}
-	bandwidth = stream->usecs * 8;
-	bandwidth /= interval;
-
-	stream->bandwidth = bandwidth;
-	stream->udev = dev;
-	stream->bEndpointAddress = is_input | epnum;
-	stream->interval = interval;
-	stream->maxp = maxp;
-}
-
-static struct fusbh200_iso_stream *
-iso_stream_find (struct fusbh200_hcd *fusbh200, struct urb *urb)
-{
-	unsigned		epnum;
-	struct fusbh200_iso_stream	*stream;
-	struct usb_host_endpoint *ep;
-	unsigned long		flags;
-
-	epnum = usb_pipeendpoint (urb->pipe);
-	if (usb_pipein(urb->pipe))
-		ep = urb->dev->ep_in[epnum];
-	else
-		ep = urb->dev->ep_out[epnum];
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	stream = ep->hcpriv;
-
-	if (unlikely (stream == NULL)) {
-		stream = iso_stream_alloc(GFP_ATOMIC);
-		if (likely (stream != NULL)) {
-			ep->hcpriv = stream;
-			stream->ep = ep;
-			iso_stream_init(fusbh200, stream, urb->dev, urb->pipe,
-					urb->interval);
-		}
-
-	/* if dev->ep [epnum] is a QH, hw is set */
-	} else if (unlikely (stream->hw != NULL)) {
-		fusbh200_dbg (fusbh200, "dev %s ep%d%s, not iso??\n",
-			urb->dev->devpath, epnum,
-			usb_pipein(urb->pipe) ? "in" : "out");
-		stream = NULL;
-	}
-
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return stream;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* fusbh200_iso_sched ops can be ITD-only or SITD-only */
-
-static struct fusbh200_iso_sched *
-iso_sched_alloc (unsigned packets, gfp_t mem_flags)
-{
-	struct fusbh200_iso_sched	*iso_sched;
-	int			size = sizeof *iso_sched;
-
-	size += packets * sizeof (struct fusbh200_iso_packet);
-	iso_sched = kzalloc(size, mem_flags);
-	if (likely (iso_sched != NULL)) {
-		INIT_LIST_HEAD (&iso_sched->td_list);
-	}
-	return iso_sched;
-}
-
-static inline void
-itd_sched_init(
-	struct fusbh200_hcd		*fusbh200,
-	struct fusbh200_iso_sched	*iso_sched,
-	struct fusbh200_iso_stream	*stream,
-	struct urb		*urb
-)
-{
-	unsigned	i;
-	dma_addr_t	dma = urb->transfer_dma;
-
-	/* how many uframes are needed for these transfers */
-	iso_sched->span = urb->number_of_packets * stream->interval;
-
-	/* figure out per-uframe itd fields that we'll need later
-	 * when we fit new itds into the schedule.
-	 */
-	for (i = 0; i < urb->number_of_packets; i++) {
-		struct fusbh200_iso_packet	*uframe = &iso_sched->packet [i];
-		unsigned		length;
-		dma_addr_t		buf;
-		u32			trans;
-
-		length = urb->iso_frame_desc [i].length;
-		buf = dma + urb->iso_frame_desc [i].offset;
-
-		trans = FUSBH200_ISOC_ACTIVE;
-		trans |= buf & 0x0fff;
-		if (unlikely (((i + 1) == urb->number_of_packets))
-				&& !(urb->transfer_flags & URB_NO_INTERRUPT))
-			trans |= FUSBH200_ITD_IOC;
-		trans |= length << 16;
-		uframe->transaction = cpu_to_hc32(fusbh200, trans);
-
-		/* might need to cross a buffer page within a uframe */
-		uframe->bufp = (buf & ~(u64)0x0fff);
-		buf += length;
-		if (unlikely ((uframe->bufp != (buf & ~(u64)0x0fff))))
-			uframe->cross = 1;
-	}
-}
-
-static void
-iso_sched_free (
-	struct fusbh200_iso_stream	*stream,
-	struct fusbh200_iso_sched	*iso_sched
-)
-{
-	if (!iso_sched)
-		return;
-	// caller must hold fusbh200->lock!
-	list_splice (&iso_sched->td_list, &stream->free_list);
-	kfree (iso_sched);
-}
-
-static int
-itd_urb_transaction (
-	struct fusbh200_iso_stream	*stream,
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	gfp_t			mem_flags
-)
-{
-	struct fusbh200_itd		*itd;
-	dma_addr_t		itd_dma;
-	int			i;
-	unsigned		num_itds;
-	struct fusbh200_iso_sched	*sched;
-	unsigned long		flags;
-
-	sched = iso_sched_alloc (urb->number_of_packets, mem_flags);
-	if (unlikely (sched == NULL))
-		return -ENOMEM;
-
-	itd_sched_init(fusbh200, sched, stream, urb);
-
-	if (urb->interval < 8)
-		num_itds = 1 + (sched->span + 7) / 8;
-	else
-		num_itds = urb->number_of_packets;
-
-	/* allocate/init ITDs */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	for (i = 0; i < num_itds; i++) {
-
-		/*
-		 * Use iTDs from the free list, but not iTDs that may
-		 * still be in use by the hardware.
-		 */
-		if (likely(!list_empty(&stream->free_list))) {
-			itd = list_first_entry(&stream->free_list,
-					struct fusbh200_itd, itd_list);
-			if (itd->frame == fusbh200->now_frame)
-				goto alloc_itd;
-			list_del (&itd->itd_list);
-			itd_dma = itd->itd_dma;
-		} else {
- alloc_itd:
-			spin_unlock_irqrestore (&fusbh200->lock, flags);
-			itd = dma_pool_alloc (fusbh200->itd_pool, mem_flags,
-					&itd_dma);
-			spin_lock_irqsave (&fusbh200->lock, flags);
-			if (!itd) {
-				iso_sched_free(stream, sched);
-				spin_unlock_irqrestore(&fusbh200->lock, flags);
-				return -ENOMEM;
-			}
-		}
-
-		memset (itd, 0, sizeof *itd);
-		itd->itd_dma = itd_dma;
-		list_add (&itd->itd_list, &sched->td_list);
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-
-	/* temporarily store schedule info in hcpriv */
-	urb->hcpriv = sched;
-	urb->error_count = 0;
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline int
-itd_slot_ok (
-	struct fusbh200_hcd		*fusbh200,
-	u32			mod,
-	u32			uframe,
-	u8			usecs,
-	u32			period
-)
-{
-	uframe %= period;
-	do {
-		/* can't commit more than uframe_periodic_max usec */
-		if (periodic_usecs (fusbh200, uframe >> 3, uframe & 0x7)
-				> (fusbh200->uframe_periodic_max - usecs))
-			return 0;
-
-		/* we know urb->interval is 2^N uframes */
-		uframe += period;
-	} while (uframe < mod);
-	return 1;
-}
-
-/*
- * This scheduler plans almost as far into the future as it has actual
- * periodic schedule slots.  (Affected by TUNE_FLS, which defaults to
- * "as small as possible" to be cache-friendlier.)  That limits the size
- * transfers you can stream reliably; avoid more than 64 msec per urb.
- * Also avoid queue depths of less than fusbh200's worst irq latency (affected
- * by the per-urb URB_NO_INTERRUPT hint, the log2_irq_thresh module parameter,
- * and other factors); or more than about 230 msec total (for portability,
- * given FUSBH200_TUNE_FLS and the slop).  Or, write a smarter scheduler!
- */
-
-#define SCHEDULE_SLOP	80	/* microframes */
-
-static int
-iso_stream_schedule (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct fusbh200_iso_stream	*stream
-)
-{
-	u32			now, next, start, period, span;
-	int			status;
-	unsigned		mod = fusbh200->periodic_size << 3;
-	struct fusbh200_iso_sched	*sched = urb->hcpriv;
-
-	period = urb->interval;
-	span = sched->span;
-
-	if (span > mod - SCHEDULE_SLOP) {
-		fusbh200_dbg (fusbh200, "iso request %p too long\n", urb);
-		status = -EFBIG;
-		goto fail;
-	}
-
-	now = fusbh200_read_frame_index(fusbh200) & (mod - 1);
-
-	/* Typical case: reuse current schedule, stream is still active.
-	 * Hopefully there are no gaps from the host falling behind
-	 * (irq delays etc), but if there are we'll take the next
-	 * slot in the schedule, implicitly assuming URB_ISO_ASAP.
-	 */
-	if (likely (!list_empty (&stream->td_list))) {
-		u32	excess;
-
-		/* For high speed devices, allow scheduling within the
-		 * isochronous scheduling threshold.  For full speed devices
-		 * and Intel PCI-based controllers, don't (work around for
-		 * Intel ICH9 bug).
-		 */
-		if (!stream->highspeed && fusbh200->fs_i_thresh)
-			next = now + fusbh200->i_thresh;
-		else
-			next = now;
-
-		/* Fell behind (by up to twice the slop amount)?
-		 * We decide based on the time of the last currently-scheduled
-		 * slot, not the time of the next available slot.
-		 */
-		excess = (stream->next_uframe - period - next) & (mod - 1);
-		if (excess >= mod - 2 * SCHEDULE_SLOP)
-			start = next + excess - mod + period *
-					DIV_ROUND_UP(mod - excess, period);
-		else
-			start = next + excess + period;
-		if (start - now >= mod) {
-			fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n",
-					urb, start - now - period, period,
-					mod);
-			status = -EFBIG;
-			goto fail;
-		}
-	}
-
-	/* need to schedule; when's the next (u)frame we could start?
-	 * this is bigger than fusbh200->i_thresh allows; scheduling itself
-	 * isn't free, the slop should handle reasonably slow cpus.  it
-	 * can also help high bandwidth if the dma and irq loads don't
-	 * jump until after the queue is primed.
-	 */
-	else {
-		int done = 0;
-		start = SCHEDULE_SLOP + (now & ~0x07);
-
-		/* NOTE:  assumes URB_ISO_ASAP, to limit complexity/bugs */
-
-		/* find a uframe slot with enough bandwidth.
-		 * Early uframes are more precious because full-speed
-		 * iso IN transfers can't use late uframes,
-		 * and therefore they should be allocated last.
-		 */
-		next = start;
-		start += period;
-		do {
-			start--;
-			/* check schedule: enough space? */
-			if (itd_slot_ok(fusbh200, mod, start,
-					stream->usecs, period))
-				done = 1;
-		} while (start > next && !done);
-
-		/* no room in the schedule */
-		if (!done) {
-			fusbh200_dbg(fusbh200, "iso resched full %p (now %d max %d)\n",
-				urb, now, now + mod);
-			status = -ENOSPC;
-			goto fail;
-		}
-	}
-
-	/* Tried to schedule too far into the future? */
-	if (unlikely(start - now + span - period
-				>= mod - 2 * SCHEDULE_SLOP)) {
-		fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n",
-				urb, start - now, span - period,
-				mod - 2 * SCHEDULE_SLOP);
-		status = -EFBIG;
-		goto fail;
-	}
-
-	stream->next_uframe = start & (mod - 1);
-
-	/* report high speed start in uframes; full speed, in frames */
-	urb->start_frame = stream->next_uframe;
-	if (!stream->highspeed)
-		urb->start_frame >>= 3;
-
-	/* Make sure scan_isoc() sees these */
-	if (fusbh200->isoc_count == 0)
-		fusbh200->next_frame = now >> 3;
-	return 0;
-
- fail:
-	iso_sched_free(stream, sched);
-	urb->hcpriv = NULL;
-	return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void
-itd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_iso_stream *stream,
-		struct fusbh200_itd *itd)
-{
-	int i;
-
-	/* it's been recently zeroed */
-	itd->hw_next = FUSBH200_LIST_END(fusbh200);
-	itd->hw_bufp [0] = stream->buf0;
-	itd->hw_bufp [1] = stream->buf1;
-	itd->hw_bufp [2] = stream->buf2;
-
-	for (i = 0; i < 8; i++)
-		itd->index[i] = -1;
-
-	/* All other fields are filled when scheduling */
-}
-
-static inline void
-itd_patch(
-	struct fusbh200_hcd		*fusbh200,
-	struct fusbh200_itd		*itd,
-	struct fusbh200_iso_sched	*iso_sched,
-	unsigned		index,
-	u16			uframe
-)
-{
-	struct fusbh200_iso_packet	*uf = &iso_sched->packet [index];
-	unsigned		pg = itd->pg;
-
-	// BUG_ON (pg == 6 && uf->cross);
-
-	uframe &= 0x07;
-	itd->index [uframe] = index;
-
-	itd->hw_transaction[uframe] = uf->transaction;
-	itd->hw_transaction[uframe] |= cpu_to_hc32(fusbh200, pg << 12);
-	itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, uf->bufp & ~(u32)0);
-	itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(uf->bufp >> 32));
-
-	/* iso_frame_desc[].offset must be strictly increasing */
-	if (unlikely (uf->cross)) {
-		u64	bufp = uf->bufp + 4096;
-
-		itd->pg = ++pg;
-		itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, bufp & ~(u32)0);
-		itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(bufp >> 32));
-	}
-}
-
-static inline void
-itd_link (struct fusbh200_hcd *fusbh200, unsigned frame, struct fusbh200_itd *itd)
-{
-	union fusbh200_shadow	*prev = &fusbh200->pshadow[frame];
-	__hc32			*hw_p = &fusbh200->periodic[frame];
-	union fusbh200_shadow	here = *prev;
-	__hc32			type = 0;
-
-	/* skip any iso nodes which might belong to previous microframes */
-	while (here.ptr) {
-		type = Q_NEXT_TYPE(fusbh200, *hw_p);
-		if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH))
-			break;
-		prev = periodic_next_shadow(fusbh200, prev, type);
-		hw_p = shadow_next_periodic(fusbh200, &here, type);
-		here = *prev;
-	}
-
-	itd->itd_next = here;
-	itd->hw_next = *hw_p;
-	prev->itd = itd;
-	itd->frame = frame;
-	wmb ();
-	*hw_p = cpu_to_hc32(fusbh200, itd->itd_dma | Q_TYPE_ITD);
-}
-
-/* fit urb's itds into the selected schedule slot; activate as needed */
-static void itd_link_urb(
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	unsigned		mod,
-	struct fusbh200_iso_stream	*stream
-)
-{
-	int			packet;
-	unsigned		next_uframe, uframe, frame;
-	struct fusbh200_iso_sched	*iso_sched = urb->hcpriv;
-	struct fusbh200_itd		*itd;
-
-	next_uframe = stream->next_uframe & (mod - 1);
-
-	if (unlikely (list_empty(&stream->td_list))) {
-		fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated
-				+= stream->bandwidth;
-		fusbh200_dbg(fusbh200,
-			"schedule devp %s ep%d%s-iso period %d start %d.%d\n",
-			urb->dev->devpath, stream->bEndpointAddress & 0x0f,
-			(stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
-			urb->interval,
-			next_uframe >> 3, next_uframe & 0x7);
-	}
-
-	/* fill iTDs uframe by uframe */
-	for (packet = 0, itd = NULL; packet < urb->number_of_packets; ) {
-		if (itd == NULL) {
-			/* ASSERT:  we have all necessary itds */
-			// BUG_ON (list_empty (&iso_sched->td_list));
-
-			/* ASSERT:  no itds for this endpoint in this uframe */
-
-			itd = list_entry (iso_sched->td_list.next,
-					struct fusbh200_itd, itd_list);
-			list_move_tail (&itd->itd_list, &stream->td_list);
-			itd->stream = stream;
-			itd->urb = urb;
-			itd_init (fusbh200, stream, itd);
-		}
-
-		uframe = next_uframe & 0x07;
-		frame = next_uframe >> 3;
-
-		itd_patch(fusbh200, itd, iso_sched, packet, uframe);
-
-		next_uframe += stream->interval;
-		next_uframe &= mod - 1;
-		packet++;
-
-		/* link completed itds into the schedule */
-		if (((next_uframe >> 3) != frame)
-				|| packet == urb->number_of_packets) {
-			itd_link(fusbh200, frame & (fusbh200->periodic_size - 1), itd);
-			itd = NULL;
-		}
-	}
-	stream->next_uframe = next_uframe;
-
-	/* don't need that schedule data any more */
-	iso_sched_free (stream, iso_sched);
-	urb->hcpriv = NULL;
-
-	++fusbh200->isoc_count;
-	enable_periodic(fusbh200);
-}
-
-#define	ISO_ERRS (FUSBH200_ISOC_BUF_ERR | FUSBH200_ISOC_BABBLE | FUSBH200_ISOC_XACTERR)
-
-/* Process and recycle a completed ITD.  Return true iff its urb completed,
- * and hence its completion callback probably added things to the hardware
- * schedule.
- *
- * Note that we carefully avoid recycling this descriptor until after any
- * completion callback runs, so that it won't be reused quickly.  That is,
- * assuming (a) no more than two urbs per frame on this endpoint, and also
- * (b) only this endpoint's completions submit URBs.  It seems some silicon
- * corrupts things if you reuse completed descriptors very quickly...
- */
-static bool itd_complete(struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd)
-{
-	struct urb				*urb = itd->urb;
-	struct usb_iso_packet_descriptor	*desc;
-	u32					t;
-	unsigned				uframe;
-	int					urb_index = -1;
-	struct fusbh200_iso_stream			*stream = itd->stream;
-	struct usb_device			*dev;
-	bool					retval = false;
-
-	/* for each uframe with a packet */
-	for (uframe = 0; uframe < 8; uframe++) {
-		if (likely (itd->index[uframe] == -1))
-			continue;
-		urb_index = itd->index[uframe];
-		desc = &urb->iso_frame_desc [urb_index];
-
-		t = hc32_to_cpup(fusbh200, &itd->hw_transaction [uframe]);
-		itd->hw_transaction [uframe] = 0;
-
-		/* report transfer status */
-		if (unlikely (t & ISO_ERRS)) {
-			urb->error_count++;
-			if (t & FUSBH200_ISOC_BUF_ERR)
-				desc->status = usb_pipein (urb->pipe)
-					? -ENOSR  /* hc couldn't read */
-					: -ECOMM; /* hc couldn't write */
-			else if (t & FUSBH200_ISOC_BABBLE)
-				desc->status = -EOVERFLOW;
-			else /* (t & FUSBH200_ISOC_XACTERR) */
-				desc->status = -EPROTO;
-
-			/* HC need not update length with this error */
-			if (!(t & FUSBH200_ISOC_BABBLE)) {
-				desc->actual_length = fusbh200_itdlen(urb, desc, t);
-				urb->actual_length += desc->actual_length;
-			}
-		} else if (likely ((t & FUSBH200_ISOC_ACTIVE) == 0)) {
-			desc->status = 0;
-			desc->actual_length = fusbh200_itdlen(urb, desc, t);
-			urb->actual_length += desc->actual_length;
-		} else {
-			/* URB was too late */
-			desc->status = -EXDEV;
-		}
-	}
-
-	/* handle completion now? */
-	if (likely ((urb_index + 1) != urb->number_of_packets))
-		goto done;
-
-	/* ASSERT: it's really the last itd for this urb
-	list_for_each_entry (itd, &stream->td_list, itd_list)
-		BUG_ON (itd->urb == urb);
-	 */
-
-	/* give urb back to the driver; completion often (re)submits */
-	dev = urb->dev;
-	fusbh200_urb_done(fusbh200, urb, 0);
-	retval = true;
-	urb = NULL;
-
-	--fusbh200->isoc_count;
-	disable_periodic(fusbh200);
-
-	if (unlikely(list_is_singular(&stream->td_list))) {
-		fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated
-				-= stream->bandwidth;
-		fusbh200_dbg(fusbh200,
-			"deschedule devp %s ep%d%s-iso\n",
-			dev->devpath, stream->bEndpointAddress & 0x0f,
-			(stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
-	}
-
-done:
-	itd->urb = NULL;
-
-	/* Add to the end of the free list for later reuse */
-	list_move_tail(&itd->itd_list, &stream->free_list);
-
-	/* Recycle the iTDs when the pipeline is empty (ep no longer in use) */
-	if (list_empty(&stream->td_list)) {
-		list_splice_tail_init(&stream->free_list,
-				&fusbh200->cached_itd_list);
-		start_free_itds(fusbh200);
-	}
-
-	return retval;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int itd_submit (struct fusbh200_hcd *fusbh200, struct urb *urb,
-	gfp_t mem_flags)
-{
-	int			status = -EINVAL;
-	unsigned long		flags;
-	struct fusbh200_iso_stream	*stream;
-
-	/* Get iso_stream head */
-	stream = iso_stream_find (fusbh200, urb);
-	if (unlikely (stream == NULL)) {
-		fusbh200_dbg (fusbh200, "can't get iso stream\n");
-		return -ENOMEM;
-	}
-	if (unlikely (urb->interval != stream->interval &&
-		      fusbh200_port_speed(fusbh200, 0) == USB_PORT_STAT_HIGH_SPEED)) {
-			fusbh200_dbg (fusbh200, "can't change iso interval %d --> %d\n",
-				stream->interval, urb->interval);
-			goto done;
-	}
-
-#ifdef FUSBH200_URB_TRACE
-	fusbh200_dbg (fusbh200,
-		"%s %s urb %p ep%d%s len %d, %d pkts %d uframes [%p]\n",
-		__func__, urb->dev->devpath, urb,
-		usb_pipeendpoint (urb->pipe),
-		usb_pipein (urb->pipe) ? "in" : "out",
-		urb->transfer_buffer_length,
-		urb->number_of_packets, urb->interval,
-		stream);
-#endif
-
-	/* allocate ITDs w/o locking anything */
-	status = itd_urb_transaction (stream, fusbh200, urb, mem_flags);
-	if (unlikely (status < 0)) {
-		fusbh200_dbg (fusbh200, "can't init itds\n");
-		goto done;
-	}
-
-	/* schedule ... need to lock */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
-		status = -ESHUTDOWN;
-		goto done_not_linked;
-	}
-	status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
-	if (unlikely(status))
-		goto done_not_linked;
-	status = iso_stream_schedule(fusbh200, urb, stream);
-	if (likely (status == 0))
-		itd_link_urb (fusbh200, urb, fusbh200->periodic_size << 3, stream);
-	else
-		usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
- done_not_linked:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
- done:
-	return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void scan_isoc(struct fusbh200_hcd *fusbh200)
-{
-	unsigned	uf, now_frame, frame;
-	unsigned	fmask = fusbh200->periodic_size - 1;
-	bool		modified, live;
-
-	/*
-	 * When running, scan from last scan point up to "now"
-	 * else clean up by scanning everything that's left.
-	 * Touches as few pages as possible:  cache-friendly.
-	 */
-	if (fusbh200->rh_state >= FUSBH200_RH_RUNNING) {
-		uf = fusbh200_read_frame_index(fusbh200);
-		now_frame = (uf >> 3) & fmask;
-		live = true;
-	} else  {
-		now_frame = (fusbh200->next_frame - 1) & fmask;
-		live = false;
-	}
-	fusbh200->now_frame = now_frame;
-
-	frame = fusbh200->next_frame;
-	for (;;) {
-		union fusbh200_shadow	q, *q_p;
-		__hc32			type, *hw_p;
-
-restart:
-		/* scan each element in frame's queue for completions */
-		q_p = &fusbh200->pshadow [frame];
-		hw_p = &fusbh200->periodic [frame];
-		q.ptr = q_p->ptr;
-		type = Q_NEXT_TYPE(fusbh200, *hw_p);
-		modified = false;
-
-		while (q.ptr != NULL) {
-			switch (hc32_to_cpu(fusbh200, type)) {
-			case Q_TYPE_ITD:
-				/* If this ITD is still active, leave it for
-				 * later processing ... check the next entry.
-				 * No need to check for activity unless the
-				 * frame is current.
-				 */
-				if (frame == now_frame && live) {
-					rmb();
-					for (uf = 0; uf < 8; uf++) {
-						if (q.itd->hw_transaction[uf] &
-							    ITD_ACTIVE(fusbh200))
-							break;
-					}
-					if (uf < 8) {
-						q_p = &q.itd->itd_next;
-						hw_p = &q.itd->hw_next;
-						type = Q_NEXT_TYPE(fusbh200,
-							q.itd->hw_next);
-						q = *q_p;
-						break;
-					}
-				}
-
-				/* Take finished ITDs out of the schedule
-				 * and process them:  recycle, maybe report
-				 * URB completion.  HC won't cache the
-				 * pointer for much longer, if at all.
-				 */
-				*q_p = q.itd->itd_next;
-				*hw_p = q.itd->hw_next;
-				type = Q_NEXT_TYPE(fusbh200, q.itd->hw_next);
-				wmb();
-				modified = itd_complete (fusbh200, q.itd);
-				q = *q_p;
-				break;
-			default:
-				fusbh200_dbg(fusbh200, "corrupt type %d frame %d shadow %p\n",
-					type, frame, q.ptr);
-				// BUG ();
-				/* FALL THROUGH */
-			case Q_TYPE_QH:
-			case Q_TYPE_FSTN:
-				/* End of the iTDs and siTDs */
-				q.ptr = NULL;
-				break;
-			}
-
-			/* assume completion callbacks modify the queue */
-			if (unlikely(modified && fusbh200->isoc_count > 0))
-				goto restart;
-		}
-
-		/* Stop when we have reached the current frame */
-		if (frame == now_frame)
-			break;
-		frame = (frame + 1) & fmask;
-	}
-	fusbh200->next_frame = now_frame;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * Display / Set uframe_periodic_max
- */
-static ssize_t show_uframe_periodic_max(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	struct fusbh200_hcd		*fusbh200;
-	int			n;
-
-	fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev)));
-	n = scnprintf(buf, PAGE_SIZE, "%d\n", fusbh200->uframe_periodic_max);
-	return n;
-}
-
-
-static ssize_t store_uframe_periodic_max(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t count)
-{
-	struct fusbh200_hcd		*fusbh200;
-	unsigned		uframe_periodic_max;
-	unsigned		frame, uframe;
-	unsigned short		allocated_max;
-	unsigned long		flags;
-	ssize_t			ret;
-
-	fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev)));
-	if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
-		return -EINVAL;
-
-	if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
-		fusbh200_info(fusbh200, "rejecting invalid request for "
-				"uframe_periodic_max=%u\n", uframe_periodic_max);
-		return -EINVAL;
-	}
-
-	ret = -EINVAL;
-
-	/*
-	 * lock, so that our checking does not race with possible periodic
-	 * bandwidth allocation through submitting new urbs.
-	 */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	/*
-	 * for request to decrease max periodic bandwidth, we have to check
-	 * every microframe in the schedule to see whether the decrease is
-	 * possible.
-	 */
-	if (uframe_periodic_max < fusbh200->uframe_periodic_max) {
-		allocated_max = 0;
-
-		for (frame = 0; frame < fusbh200->periodic_size; ++frame)
-			for (uframe = 0; uframe < 7; ++uframe)
-				allocated_max = max(allocated_max,
-						    periodic_usecs (fusbh200, frame, uframe));
-
-		if (allocated_max > uframe_periodic_max) {
-			fusbh200_info(fusbh200,
-				"cannot decrease uframe_periodic_max because "
-				"periodic bandwidth is already allocated "
-				"(%u > %u)\n",
-				allocated_max, uframe_periodic_max);
-			goto out_unlock;
-		}
-	}
-
-	/* increasing is always ok */
-
-	fusbh200_info(fusbh200, "setting max periodic bandwidth to %u%% "
-			"(== %u usec/uframe)\n",
-			100*uframe_periodic_max/125, uframe_periodic_max);
-
-	if (uframe_periodic_max != 100)
-		fusbh200_warn(fusbh200, "max periodic bandwidth set is non-standard\n");
-
-	fusbh200->uframe_periodic_max = uframe_periodic_max;
-	ret = count;
-
-out_unlock:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return ret;
-}
-static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max);
-
-
-static inline int create_sysfs_files(struct fusbh200_hcd *fusbh200)
-{
-	struct device	*controller = fusbh200_to_hcd(fusbh200)->self.controller;
-	int	i = 0;
-
-	if (i)
-		goto out;
-
-	i = device_create_file(controller, &dev_attr_uframe_periodic_max);
-out:
-	return i;
-}
-
-static inline void remove_sysfs_files(struct fusbh200_hcd *fusbh200)
-{
-	struct device	*controller = fusbh200_to_hcd(fusbh200)->self.controller;
-
-	device_remove_file(controller, &dev_attr_uframe_periodic_max);
-}
-/*-------------------------------------------------------------------------*/
-
-/* On some systems, leaving remote wakeup enabled prevents system shutdown.
- * The firmware seems to think that powering off is a wakeup event!
- * This routine turns off remote wakeup and everything else, on all ports.
- */
-static void fusbh200_turn_off_all_ports(struct fusbh200_hcd *fusbh200)
-{
-	u32 __iomem *status_reg = &fusbh200->regs->port_status;
-
-	fusbh200_writel(fusbh200, PORT_RWC_BITS, status_reg);
-}
-
-/*
- * Halt HC, turn off all ports, and let the BIOS use the companion controllers.
- * Must be called with interrupts enabled and the lock not held.
- */
-static void fusbh200_silence_controller(struct fusbh200_hcd *fusbh200)
-{
-	fusbh200_halt(fusbh200);
-
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->rh_state = FUSBH200_RH_HALTED;
-	fusbh200_turn_off_all_ports(fusbh200);
-	spin_unlock_irq(&fusbh200->lock);
-}
-
-/* fusbh200_shutdown kick in for silicon on any bus (not just pci, etc).
- * This forcibly disables dma and IRQs, helping kexec and other cases
- * where the next system software may expect clean state.
- */
-static void fusbh200_shutdown(struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd	*fusbh200 = hcd_to_fusbh200(hcd);
-
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->shutdown = true;
-	fusbh200->rh_state = FUSBH200_RH_STOPPING;
-	fusbh200->enabled_hrtimer_events = 0;
-	spin_unlock_irq(&fusbh200->lock);
-
-	fusbh200_silence_controller(fusbh200);
-
-	hrtimer_cancel(&fusbh200->hrtimer);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * fusbh200_work is called from some interrupts, timers, and so on.
- * it calls driver completion functions, after dropping fusbh200->lock.
- */
-static void fusbh200_work (struct fusbh200_hcd *fusbh200)
-{
-	/* another CPU may drop fusbh200->lock during a schedule scan while
-	 * it reports urb completions.  this flag guards against bogus
-	 * attempts at re-entrant schedule scanning.
-	 */
-	if (fusbh200->scanning) {
-		fusbh200->need_rescan = true;
-		return;
-	}
-	fusbh200->scanning = true;
-
- rescan:
-	fusbh200->need_rescan = false;
-	if (fusbh200->async_count)
-		scan_async(fusbh200);
-	if (fusbh200->intr_count > 0)
-		scan_intr(fusbh200);
-	if (fusbh200->isoc_count > 0)
-		scan_isoc(fusbh200);
-	if (fusbh200->need_rescan)
-		goto rescan;
-	fusbh200->scanning = false;
-
-	/* the IO watchdog guards against hardware or driver bugs that
-	 * misplace IRQs, and should let us run completely without IRQs.
-	 * such lossage has been observed on both VT6202 and VT8235.
-	 */
-	turn_on_io_watchdog(fusbh200);
-}
-
-/*
- * Called when the fusbh200_hcd module is removed.
- */
-static void fusbh200_stop (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-
-	fusbh200_dbg (fusbh200, "stop\n");
-
-	/* no more interrupts ... */
-
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->enabled_hrtimer_events = 0;
-	spin_unlock_irq(&fusbh200->lock);
-
-	fusbh200_quiesce(fusbh200);
-	fusbh200_silence_controller(fusbh200);
-	fusbh200_reset (fusbh200);
-
-	hrtimer_cancel(&fusbh200->hrtimer);
-	remove_sysfs_files(fusbh200);
-	remove_debug_files (fusbh200);
-
-	/* root hub is shut down separately (first, when possible) */
-	spin_lock_irq (&fusbh200->lock);
-	end_free_itds(fusbh200);
-	spin_unlock_irq (&fusbh200->lock);
-	fusbh200_mem_cleanup (fusbh200);
-
-	fusbh200_dbg(fusbh200, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
-		fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa,
-		fusbh200->stats.lost_iaa);
-	fusbh200_dbg (fusbh200, "complete %ld unlink %ld\n",
-		fusbh200->stats.complete, fusbh200->stats.unlink);
-
-	dbg_status (fusbh200, "fusbh200_stop completed",
-		    fusbh200_readl(fusbh200, &fusbh200->regs->status));
-}
-
-/* one-time init, only for memory state */
-static int hcd_fusbh200_init(struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200(hcd);
-	u32			temp;
-	int			retval;
-	u32			hcc_params;
-	struct fusbh200_qh_hw	*hw;
-
-	spin_lock_init(&fusbh200->lock);
-
-	/*
-	 * keep io watchdog by default, those good HCDs could turn off it later
-	 */
-	fusbh200->need_io_watchdog = 1;
-
-	hrtimer_init(&fusbh200->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
-	fusbh200->hrtimer.function = fusbh200_hrtimer_func;
-	fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT;
-
-	hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
-	/*
-	 * by default set standard 80% (== 100 usec/uframe) max periodic
-	 * bandwidth as required by USB 2.0
-	 */
-	fusbh200->uframe_periodic_max = 100;
-
-	/*
-	 * hw default: 1K periodic list heads, one per frame.
-	 * periodic_size can shrink by USBCMD update if hcc_params allows.
-	 */
-	fusbh200->periodic_size = DEFAULT_I_TDPS;
-	INIT_LIST_HEAD(&fusbh200->intr_qh_list);
-	INIT_LIST_HEAD(&fusbh200->cached_itd_list);
-
-	if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
-		/* periodic schedule size can be smaller than default */
-		switch (FUSBH200_TUNE_FLS) {
-		case 0: fusbh200->periodic_size = 1024; break;
-		case 1: fusbh200->periodic_size = 512; break;
-		case 2: fusbh200->periodic_size = 256; break;
-		default:	BUG();
-		}
-	}
-	if ((retval = fusbh200_mem_init(fusbh200, GFP_KERNEL)) < 0)
-		return retval;
-
-	/* controllers may cache some of the periodic schedule ... */
-	fusbh200->i_thresh = 2;
-
-	/*
-	 * dedicate a qh for the async ring head, since we couldn't unlink
-	 * a 'real' qh without stopping the async schedule [4.8].  use it
-	 * as the 'reclamation list head' too.
-	 * its dummy is used in hw_alt_next of many tds, to prevent the qh
-	 * from automatically advancing to the next td after short reads.
-	 */
-	fusbh200->async->qh_next.qh = NULL;
-	hw = fusbh200->async->hw;
-	hw->hw_next = QH_NEXT(fusbh200, fusbh200->async->qh_dma);
-	hw->hw_info1 = cpu_to_hc32(fusbh200, QH_HEAD);
-	hw->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT);
-	hw->hw_qtd_next = FUSBH200_LIST_END(fusbh200);
-	fusbh200->async->qh_state = QH_STATE_LINKED;
-	hw->hw_alt_next = QTD_NEXT(fusbh200, fusbh200->async->dummy->qtd_dma);
-
-	/* clear interrupt enables, set irq latency */
-	if (log2_irq_thresh < 0 || log2_irq_thresh > 6)
-		log2_irq_thresh = 0;
-	temp = 1 << (16 + log2_irq_thresh);
-	if (HCC_CANPARK(hcc_params)) {
-		/* HW default park == 3, on hardware that supports it (like
-		 * NVidia and ALI silicon), maximizes throughput on the async
-		 * schedule by avoiding QH fetches between transfers.
-		 *
-		 * With fast usb storage devices and NForce2, "park" seems to
-		 * make problems:  throughput reduction (!), data errors...
-		 */
-		if (park) {
-			park = min(park, (unsigned) 3);
-			temp |= CMD_PARK;
-			temp |= park << 8;
-		}
-		fusbh200_dbg(fusbh200, "park %d\n", park);
-	}
-	if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
-		/* periodic schedule size can be smaller than default */
-		temp &= ~(3 << 2);
-		temp |= (FUSBH200_TUNE_FLS << 2);
-	}
-	fusbh200->command = temp;
-
-	/* Accept arbitrarily long scatter-gather lists */
-	if (!(hcd->driver->flags & HCD_LOCAL_MEM))
-		hcd->self.sg_tablesize = ~0;
-	return 0;
-}
-
-/* start HC running; it's halted, hcd_fusbh200_init() has been run (once) */
-static int fusbh200_run (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	u32			temp;
-	u32			hcc_params;
-
-	hcd->uses_new_polling = 1;
-
-	/* EHCI spec section 4.1 */
-
-	fusbh200_writel(fusbh200, fusbh200->periodic_dma, &fusbh200->regs->frame_list);
-	fusbh200_writel(fusbh200, (u32)fusbh200->async->qh_dma, &fusbh200->regs->async_next);
-
-	/*
-	 * hcc_params controls whether fusbh200->regs->segment must (!!!)
-	 * be used; it constrains QH/ITD/SITD and QTD locations.
-	 * pci_pool consistent memory always uses segment zero.
-	 * streaming mappings for I/O buffers, like pci_map_single(),
-	 * can return segments above 4GB, if the device allows.
-	 *
-	 * NOTE:  the dma mask is visible through dma_supported(), so
-	 * drivers can pass this info along ... like NETIF_F_HIGHDMA,
-	 * Scsi_Host.highmem_io, and so forth.  It's readonly to all
-	 * host side drivers though.
-	 */
-	hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
-	// Philips, Intel, and maybe others need CMD_RUN before the
-	// root hub will detect new devices (why?); NEC doesn't
-	fusbh200->command &= ~(CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
-	fusbh200->command |= CMD_RUN;
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-	dbg_cmd (fusbh200, "init", fusbh200->command);
-
-	/*
-	 * Start, enabling full USB 2.0 functionality ... usb 1.1 devices
-	 * are explicitly handed to companion controller(s), so no TT is
-	 * involved with the root hub.  (Except where one is integrated,
-	 * and there's no companion controller unless maybe for USB OTG.)
-	 *
-	 * Turning on the CF flag will transfer ownership of all ports
-	 * from the companions to the EHCI controller.  If any of the
-	 * companions are in the middle of a port reset at the time, it
-	 * could cause trouble.  Write-locking ehci_cf_port_reset_rwsem
-	 * guarantees that no resets are in progress.  After we set CF,
-	 * a short delay lets the hardware catch up; new resets shouldn't
-	 * be started before the port switching actions could complete.
-	 */
-	down_write(&ehci_cf_port_reset_rwsem);
-	fusbh200->rh_state = FUSBH200_RH_RUNNING;
-	fusbh200_readl(fusbh200, &fusbh200->regs->command);	/* unblock posted writes */
-	msleep(5);
-	up_write(&ehci_cf_port_reset_rwsem);
-	fusbh200->last_periodic_enable = ktime_get_real();
-
-	temp = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
-	fusbh200_info (fusbh200,
-		"USB %x.%x started, EHCI %x.%02x\n",
-		((fusbh200->sbrn & 0xf0)>>4), (fusbh200->sbrn & 0x0f),
-		temp >> 8, temp & 0xff);
-
-	fusbh200_writel(fusbh200, INTR_MASK,
-		    &fusbh200->regs->intr_enable); /* Turn On Interrupts */
-
-	/* GRR this is run-once init(), being done every time the HC starts.
-	 * So long as they're part of class devices, we can't do it init()
-	 * since the class device isn't created that early.
-	 */
-	create_debug_files(fusbh200);
-	create_sysfs_files(fusbh200);
-
-	return 0;
-}
-
-static int fusbh200_setup(struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
-	int retval;
-
-	fusbh200->regs = (void __iomem *)fusbh200->caps +
-	    HC_LENGTH(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
-	dbg_hcs_params(fusbh200, "reset");
-	dbg_hcc_params(fusbh200, "reset");
-
-	/* cache this readonly data; minimize chip reads */
-	fusbh200->hcs_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-
-	fusbh200->sbrn = HCD_USB2;
-
-	/* data structure init */
-	retval = hcd_fusbh200_init(hcd);
-	if (retval)
-		return retval;
-
-	retval = fusbh200_halt(fusbh200);
-	if (retval)
-		return retval;
-
-	fusbh200_reset(fusbh200);
-
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static irqreturn_t fusbh200_irq (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	u32			status, masked_status, pcd_status = 0, cmd;
-	int			bh;
-
-	spin_lock (&fusbh200->lock);
-
-	status = fusbh200_readl(fusbh200, &fusbh200->regs->status);
-
-	/* e.g. cardbus physical eject */
-	if (status == ~(u32) 0) {
-		fusbh200_dbg (fusbh200, "device removed\n");
-		goto dead;
-	}
-
-	/*
-	 * We don't use STS_FLR, but some controllers don't like it to
-	 * remain on, so mask it out along with the other status bits.
-	 */
-	masked_status = status & (INTR_MASK | STS_FLR);
-
-	/* Shared IRQ? */
-	if (!masked_status || unlikely(fusbh200->rh_state == FUSBH200_RH_HALTED)) {
-		spin_unlock(&fusbh200->lock);
-		return IRQ_NONE;
-	}
-
-	/* clear (just) interrupts */
-	fusbh200_writel(fusbh200, masked_status, &fusbh200->regs->status);
-	cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-	bh = 0;
-
-	/* normal [4.15.1.2] or error [4.15.1.1] completion */
-	if (likely ((status & (STS_INT|STS_ERR)) != 0)) {
-		if (likely ((status & STS_ERR) == 0))
-			COUNT (fusbh200->stats.normal);
-		else
-			COUNT (fusbh200->stats.error);
-		bh = 1;
-	}
-
-	/* complete the unlinking of some qh [4.15.2.3] */
-	if (status & STS_IAA) {
-
-		/* Turn off the IAA watchdog */
-		fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_IAA_WATCHDOG);
-
-		/*
-		 * Mild optimization: Allow another IAAD to reset the
-		 * hrtimer, if one occurs before the next expiration.
-		 * In theory we could always cancel the hrtimer, but
-		 * tests show that about half the time it will be reset
-		 * for some other event anyway.
-		 */
-		if (fusbh200->next_hrtimer_event == FUSBH200_HRTIMER_IAA_WATCHDOG)
-			++fusbh200->next_hrtimer_event;
-
-		/* guard against (alleged) silicon errata */
-		if (cmd & CMD_IAAD)
-			fusbh200_dbg(fusbh200, "IAA with IAAD still set?\n");
-		if (fusbh200->async_iaa) {
-			COUNT(fusbh200->stats.iaa);
-			end_unlink_async(fusbh200);
-		} else
-			fusbh200_dbg(fusbh200, "IAA with nothing unlinked?\n");
-	}
-
-	/* remote wakeup [4.3.1] */
-	if (status & STS_PCD) {
-		int pstatus;
-		u32 __iomem *status_reg = &fusbh200->regs->port_status;
-
-		/* kick root hub later */
-		pcd_status = status;
-
-		/* resume root hub? */
-		if (fusbh200->rh_state == FUSBH200_RH_SUSPENDED)
-			usb_hcd_resume_root_hub(hcd);
-
-		pstatus = fusbh200_readl(fusbh200, status_reg);
-
-		if (test_bit(0, &fusbh200->suspended_ports) &&
-				((pstatus & PORT_RESUME) ||
-					!(pstatus & PORT_SUSPEND)) &&
-				(pstatus & PORT_PE) &&
-				fusbh200->reset_done[0] == 0) {
-
-			/* start 20 msec resume signaling from this port,
-			 * and make hub_wq collect PORT_STAT_C_SUSPEND to
-			 * stop that signaling.  Use 5 ms extra for safety,
-			 * like usb_port_resume() does.
-			 */
-			fusbh200->reset_done[0] = jiffies + msecs_to_jiffies(25);
-			set_bit(0, &fusbh200->resuming_ports);
-			fusbh200_dbg (fusbh200, "port 1 remote wakeup\n");
-			mod_timer(&hcd->rh_timer, fusbh200->reset_done[0]);
-		}
-	}
-
-	/* PCI errors [4.15.2.4] */
-	if (unlikely ((status & STS_FATAL) != 0)) {
-		fusbh200_err(fusbh200, "fatal error\n");
-		dbg_cmd(fusbh200, "fatal", cmd);
-		dbg_status(fusbh200, "fatal", status);
-dead:
-		usb_hc_died(hcd);
-
-		/* Don't let the controller do anything more */
-		fusbh200->shutdown = true;
-		fusbh200->rh_state = FUSBH200_RH_STOPPING;
-		fusbh200->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
-		fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-		fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-		fusbh200_handle_controller_death(fusbh200);
-
-		/* Handle completions when the controller stops */
-		bh = 0;
-	}
-
-	if (bh)
-		fusbh200_work (fusbh200);
-	spin_unlock (&fusbh200->lock);
-	if (pcd_status)
-		usb_hcd_poll_rh_status(hcd);
-	return IRQ_HANDLED;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * non-error returns are a promise to giveback() the urb later
- * we drop ownership so next owner (or urb unlink) can get it
- *
- * urb + dev is in hcd.self.controller.urb_list
- * we're queueing TDs onto software and hardware lists
- *
- * hcd-specific init for hcpriv hasn't been done yet
- *
- * NOTE:  control, bulk, and interrupt share the same code to append TDs
- * to a (possibly active) QH, and the same QH scanning code.
- */
-static int fusbh200_urb_enqueue (
-	struct usb_hcd	*hcd,
-	struct urb	*urb,
-	gfp_t		mem_flags
-) {
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	struct list_head	qtd_list;
-
-	INIT_LIST_HEAD (&qtd_list);
-
-	switch (usb_pipetype (urb->pipe)) {
-	case PIPE_CONTROL:
-		/* qh_completions() code doesn't handle all the fault cases
-		 * in multi-TD control transfers.  Even 1KB is rare anyway.
-		 */
-		if (urb->transfer_buffer_length > (16 * 1024))
-			return -EMSGSIZE;
-		/* FALLTHROUGH */
-	/* case PIPE_BULK: */
-	default:
-		if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags))
-			return -ENOMEM;
-		return submit_async(fusbh200, urb, &qtd_list, mem_flags);
-
-	case PIPE_INTERRUPT:
-		if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags))
-			return -ENOMEM;
-		return intr_submit(fusbh200, urb, &qtd_list, mem_flags);
-
-	case PIPE_ISOCHRONOUS:
-		return itd_submit (fusbh200, urb, mem_flags);
-	}
-}
-
-/* remove from hardware lists
- * completions normally happen asynchronously
- */
-
-static int fusbh200_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	struct fusbh200_qh		*qh;
-	unsigned long		flags;
-	int			rc;
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
-	if (rc)
-		goto done;
-
-	switch (usb_pipetype (urb->pipe)) {
-	// case PIPE_CONTROL:
-	// case PIPE_BULK:
-	default:
-		qh = (struct fusbh200_qh *) urb->hcpriv;
-		if (!qh)
-			break;
-		switch (qh->qh_state) {
-		case QH_STATE_LINKED:
-		case QH_STATE_COMPLETING:
-			start_unlink_async(fusbh200, qh);
-			break;
-		case QH_STATE_UNLINK:
-		case QH_STATE_UNLINK_WAIT:
-			/* already started */
-			break;
-		case QH_STATE_IDLE:
-			/* QH might be waiting for a Clear-TT-Buffer */
-			qh_completions(fusbh200, qh);
-			break;
-		}
-		break;
-
-	case PIPE_INTERRUPT:
-		qh = (struct fusbh200_qh *) urb->hcpriv;
-		if (!qh)
-			break;
-		switch (qh->qh_state) {
-		case QH_STATE_LINKED:
-		case QH_STATE_COMPLETING:
-			start_unlink_intr(fusbh200, qh);
-			break;
-		case QH_STATE_IDLE:
-			qh_completions (fusbh200, qh);
-			break;
-		default:
-			fusbh200_dbg (fusbh200, "bogus qh %p state %d\n",
-					qh, qh->qh_state);
-			goto done;
-		}
-		break;
-
-	case PIPE_ISOCHRONOUS:
-		// itd...
-
-		// wait till next completion, do it then.
-		// completion irqs can wait up to 1024 msec,
-		break;
-	}
-done:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// bulk qh holds the data toggle
-
-static void
-fusbh200_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	unsigned long		flags;
-	struct fusbh200_qh		*qh, *tmp;
-
-	/* ASSERT:  any requests/urbs are being unlinked */
-	/* ASSERT:  nobody can be submitting urbs for this any more */
-
-rescan:
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	qh = ep->hcpriv;
-	if (!qh)
-		goto done;
-
-	/* endpoints can be iso streams.  for now, we don't
-	 * accelerate iso completions ... so spin a while.
-	 */
-	if (qh->hw == NULL) {
-		struct fusbh200_iso_stream	*stream = ep->hcpriv;
-
-		if (!list_empty(&stream->td_list))
-			goto idle_timeout;
-
-		/* BUG_ON(!list_empty(&stream->free_list)); */
-		kfree(stream);
-		goto done;
-	}
-
-	if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
-		qh->qh_state = QH_STATE_IDLE;
-	switch (qh->qh_state) {
-	case QH_STATE_LINKED:
-	case QH_STATE_COMPLETING:
-		for (tmp = fusbh200->async->qh_next.qh;
-				tmp && tmp != qh;
-				tmp = tmp->qh_next.qh)
-			continue;
-		/* periodic qh self-unlinks on empty, and a COMPLETING qh
-		 * may already be unlinked.
-		 */
-		if (tmp)
-			start_unlink_async(fusbh200, qh);
-		/* FALL THROUGH */
-	case QH_STATE_UNLINK:		/* wait for hw to finish? */
-	case QH_STATE_UNLINK_WAIT:
-idle_timeout:
-		spin_unlock_irqrestore (&fusbh200->lock, flags);
-		schedule_timeout_uninterruptible(1);
-		goto rescan;
-	case QH_STATE_IDLE:		/* fully unlinked */
-		if (qh->clearing_tt)
-			goto idle_timeout;
-		if (list_empty (&qh->qtd_list)) {
-			qh_destroy(fusbh200, qh);
-			break;
-		}
-		/* else FALL THROUGH */
-	default:
-		/* caller was supposed to have unlinked any requests;
-		 * that's not our job.  just leak this memory.
-		 */
-		fusbh200_err (fusbh200, "qh %p (#%02x) state %d%s\n",
-			qh, ep->desc.bEndpointAddress, qh->qh_state,
-			list_empty (&qh->qtd_list) ? "" : "(has tds)");
-		break;
-	}
- done:
-	ep->hcpriv = NULL;
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-}
-
-static void
-fusbh200_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200(hcd);
-	struct fusbh200_qh		*qh;
-	int			eptype = usb_endpoint_type(&ep->desc);
-	int			epnum = usb_endpoint_num(&ep->desc);
-	int			is_out = usb_endpoint_dir_out(&ep->desc);
-	unsigned long		flags;
-
-	if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
-		return;
-
-	spin_lock_irqsave(&fusbh200->lock, flags);
-	qh = ep->hcpriv;
-
-	/* For Bulk and Interrupt endpoints we maintain the toggle state
-	 * in the hardware; the toggle bits in udev aren't used at all.
-	 * When an endpoint is reset by usb_clear_halt() we must reset
-	 * the toggle bit in the QH.
-	 */
-	if (qh) {
-		usb_settoggle(qh->dev, epnum, is_out, 0);
-		if (!list_empty(&qh->qtd_list)) {
-			WARN_ONCE(1, "clear_halt for a busy endpoint\n");
-		} else if (qh->qh_state == QH_STATE_LINKED ||
-				qh->qh_state == QH_STATE_COMPLETING) {
-
-			/* The toggle value in the QH can't be updated
-			 * while the QH is active.  Unlink it now;
-			 * re-linking will call qh_refresh().
-			 */
-			if (eptype == USB_ENDPOINT_XFER_BULK)
-				start_unlink_async(fusbh200, qh);
-			else
-				start_unlink_intr(fusbh200, qh);
-		}
-	}
-	spin_unlock_irqrestore(&fusbh200->lock, flags);
-}
-
-static int fusbh200_get_frame (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	return (fusbh200_read_frame_index(fusbh200) >> 3) % fusbh200->periodic_size;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * The EHCI in ChipIdea HDRC cannot be a separate module or device,
- * because its registers (and irq) are shared between host/gadget/otg
- * functions  and in order to facilitate role switching we cannot
- * give the fusbh200 driver exclusive access to those.
- */
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR (DRIVER_AUTHOR);
-MODULE_LICENSE ("GPL");
-
-static const struct hc_driver fusbh200_fusbh200_hc_driver = {
-	.description 		= hcd_name,
-	.product_desc 		= "Faraday USB2.0 Host Controller",
-	.hcd_priv_size 		= sizeof(struct fusbh200_hcd),
-
-	/*
-	 * generic hardware linkage
-	 */
-	.irq 			= fusbh200_irq,
-	.flags 			= HCD_MEMORY | HCD_USB2,
-
-	/*
-	 * basic lifecycle operations
-	 */
-	.reset 			= hcd_fusbh200_init,
-	.start 			= fusbh200_run,
-	.stop 			= fusbh200_stop,
-	.shutdown 		= fusbh200_shutdown,
-
-	/*
-	 * managing i/o requests and associated device resources
-	 */
-	.urb_enqueue 		= fusbh200_urb_enqueue,
-	.urb_dequeue 		= fusbh200_urb_dequeue,
-	.endpoint_disable 	= fusbh200_endpoint_disable,
-	.endpoint_reset 	= fusbh200_endpoint_reset,
-
-	/*
-	 * scheduling support
-	 */
-	.get_frame_number 	= fusbh200_get_frame,
-
-	/*
-	 * root hub support
-	 */
-	.hub_status_data 	= fusbh200_hub_status_data,
-	.hub_control 		= fusbh200_hub_control,
-	.bus_suspend 		= fusbh200_bus_suspend,
-	.bus_resume 		= fusbh200_bus_resume,
-
-	.relinquish_port 	= fusbh200_relinquish_port,
-	.port_handed_over 	= fusbh200_port_handed_over,
-
-	.clear_tt_buffer_complete = fusbh200_clear_tt_buffer_complete,
-};
-
-static void fusbh200_init(struct fusbh200_hcd *fusbh200)
-{
-	u32 reg;
-
-	reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmcsr);
-	reg |= BMCSR_INT_POLARITY;
-	reg &= ~BMCSR_VBUS_OFF;
-	fusbh200_writel(fusbh200, reg, &fusbh200->regs->bmcsr);
-
-	reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmier);
-	fusbh200_writel(fusbh200, reg | BMIER_OVC_EN | BMIER_VBUS_ERR_EN,
-		&fusbh200->regs->bmier);
-}
-
-/**
- * fusbh200_hcd_probe - initialize faraday FUSBH200 HCDs
- *
- * Allocates basic resources for this USB host controller, and
- * then invokes the start() method for the HCD associated with it
- * through the hotplug entry's driver_data.
- */
-static int fusbh200_hcd_probe(struct platform_device *pdev)
-{
-	struct device			*dev = &pdev->dev;
-	struct usb_hcd 			*hcd;
-	struct resource			*res;
-	int 				irq;
-	int 				retval = -ENODEV;
-	struct fusbh200_hcd 		*fusbh200;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	pdev->dev.power.power_state = PMSG_ON;
-
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res) {
-		dev_err(dev,
-			"Found HC with no IRQ. Check %s setup!\n",
-			dev_name(dev));
-		return -ENODEV;
-	}
-
-	irq = res->start;
-
-	hcd = usb_create_hcd(&fusbh200_fusbh200_hc_driver, dev,
-			dev_name(dev));
-	if (!hcd) {
-		dev_err(dev, "failed to create hcd with err %d\n", retval);
-		retval = -ENOMEM;
-		goto fail_create_hcd;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev,
-			"Found HC with no register addr. Check %s setup!\n",
-			dev_name(dev));
-		retval = -ENODEV;
-		goto fail_request_resource;
-	}
-
-	hcd->rsrc_start = res->start;
-	hcd->rsrc_len = resource_size(res);
-	hcd->has_tt = 1;
-
-	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
-				fusbh200_fusbh200_hc_driver.description)) {
-		dev_dbg(dev, "controller already in use\n");
-		retval = -EBUSY;
-		goto fail_request_resource;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-	if (!res) {
-		dev_err(dev,
-			"Found HC with no register addr. Check %s setup!\n",
-			dev_name(dev));
-		retval = -ENODEV;
-		goto fail_request_resource;
-	}
-
-	hcd->regs = ioremap_nocache(res->start, resource_size(res));
-	if (hcd->regs == NULL) {
-		dev_dbg(dev, "error mapping memory\n");
-		retval = -EFAULT;
-		goto fail_ioremap;
-	}
-
-	fusbh200 = hcd_to_fusbh200(hcd);
-
-	fusbh200->caps = hcd->regs;
-
-	retval = fusbh200_setup(hcd);
-	if (retval)
-		goto fail_add_hcd;
-
-	fusbh200_init(fusbh200);
-
-	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
-	if (retval) {
-		dev_err(dev, "failed to add hcd with err %d\n", retval);
-		goto fail_add_hcd;
-	}
-	device_wakeup_enable(hcd->self.controller);
-
-	return retval;
-
-fail_add_hcd:
-	iounmap(hcd->regs);
-fail_ioremap:
-	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-fail_request_resource:
-	usb_put_hcd(hcd);
-fail_create_hcd:
-	dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval);
-	return retval;
-}
-
-/**
- * fusbh200_hcd_remove - shutdown processing for EHCI HCDs
- * @dev: USB Host Controller being removed
- *
- * Reverses the effect of fotg2xx_usb_hcd_probe(), first invoking
- * the HCD's stop() method.  It is always called from a thread
- * context, normally "rmmod", "apmd", or something similar.
- */
-static int fusbh200_hcd_remove(struct platform_device *pdev)
-{
-	struct device *dev	= &pdev->dev;
-	struct usb_hcd *hcd	= dev_get_drvdata(dev);
-
-	if (!hcd)
-		return 0;
-
-	usb_remove_hcd(hcd);
-	iounmap(hcd->regs);
-	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-	usb_put_hcd(hcd);
-
-	return 0;
-}
-
-static struct platform_driver fusbh200_hcd_fusbh200_driver = {
-	.driver = {
-		.name   = "fusbh200",
-	},
-	.probe  = fusbh200_hcd_probe,
-	.remove = fusbh200_hcd_remove,
-};
-
-static int __init fusbh200_hcd_init(void)
-{
-	int retval = 0;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name);
-	set_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-	if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) ||
-			test_bit(USB_OHCI_LOADED, &usb_hcds_loaded))
-		printk(KERN_WARNING "Warning! fusbh200_hcd should always be loaded"
-				" before uhci_hcd and ohci_hcd, not after\n");
-
-	pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n",
-		 hcd_name,
-		 sizeof(struct fusbh200_qh), sizeof(struct fusbh200_qtd),
-		 sizeof(struct fusbh200_itd));
-
-	fusbh200_debug_root = debugfs_create_dir("fusbh200", usb_debug_root);
-	if (!fusbh200_debug_root) {
-		retval = -ENOENT;
-		goto err_debug;
-	}
-
-	retval = platform_driver_register(&fusbh200_hcd_fusbh200_driver);
-	if (retval < 0)
-		goto clean;
-	return retval;
-
-	platform_driver_unregister(&fusbh200_hcd_fusbh200_driver);
-clean:
-	debugfs_remove(fusbh200_debug_root);
-	fusbh200_debug_root = NULL;
-err_debug:
-	clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-	return retval;
-}
-module_init(fusbh200_hcd_init);
-
-static void __exit fusbh200_hcd_cleanup(void)
-{
-	platform_driver_unregister(&fusbh200_hcd_fusbh200_driver);
-	debugfs_remove(fusbh200_debug_root);
-	clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-}
-module_exit(fusbh200_hcd_cleanup);