USB: r8a66597-hcd: host controller driver for R8A66597

I would like to submit Renesas R8A66597 USB HCD driver.

R8A66597 is Renesas USB 2.0 host and peripheral combined
controller device originally designed for embedded products.
As a limitation of this device, it does not support externel
hub more than 2 tier, and cannot communicate with a USB
device more than 10. Then this device is not compatible with
EHCI and/or OHCI, I wrote driver support patch based on
sl811 code.

This driver has the following unique specifications:
- Implement transfer timeout to share one pipe with plural endpoint.
- Detach detection of a USB device connected to externel hub.

The driver has been tested external hub, usb-hdd, usb-cdrom,
usb-speaker, mice, keyboard, and usbtest driver.

Signed-off-by : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2241 insertions, 0 deletions

diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
new file mode 100644
index 00000000000..af13f1f2296
--- /dev/null
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -0,0 +1,2241 @@
+/*
+ * R8A66597 HCD (Host Controller Driver)
+ *
+ * Copyright (C) 2006-2007 Renesas Solutions Corp.
+ * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
+ * Portions Copyright (C) 2004-2005 David Brownell
+ * Portions Copyright (C) 1999 Roman Weissgaerber
+ *
+ * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/platform_device.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+
+#include "../core/hcd.h"
+#include "r8a66597.h"
+
+MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Yoshihiro Shimoda");
+
+#define DRIVER_VERSION	"9 May 2007"
+
+static const char hcd_name[] = "r8a66597_hcd";
+
+/* module parameters */
+static unsigned short clock = XTAL12;
+module_param(clock, ushort, 0644);
+MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0(default=0)");
+static unsigned short vif = LDRV;
+module_param(vif, ushort, 0644);
+MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
+static unsigned short endian = 0;
+module_param(endian, ushort, 0644);
+MODULE_PARM_DESC(endian, "data endian: big=256, little=0(default=0)");
+static unsigned short irq_sense = INTL;
+module_param(irq_sense, ushort, 0644);
+MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0(default=32)");
+
+static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
+static int r8a66597_get_frame(struct usb_hcd *hcd);
+
+/* this function must be called with interrupt disabled */
+static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
+			    unsigned long reg)
+{
+	u16 tmp;
+
+	tmp = r8a66597_read(r8a66597, INTENB0);
+	r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
+	r8a66597_bset(r8a66597, 1 << pipenum, reg);
+	r8a66597_write(r8a66597, tmp, INTENB0);
+}
+
+/* this function must be called with interrupt disabled */
+static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
+			     unsigned long reg)
+{
+	u16 tmp;
+
+	tmp = r8a66597_read(r8a66597, INTENB0);
+	r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
+	r8a66597_bclr(r8a66597, 1 << pipenum, reg);
+	r8a66597_write(r8a66597, tmp, INTENB0);
+}
+
+static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
+			   u16 usbspd, u8 upphub, u8 hubport, int port)
+{
+	u16 val;
+	unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
+
+	val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
+	r8a66597_write(r8a66597, val, devadd_reg);
+}
+
+static int enable_controller(struct r8a66597 *r8a66597)
+{
+	u16 tmp;
+	int i = 0;
+
+	do {
+		r8a66597_write(r8a66597, USBE, SYSCFG0);
+		tmp = r8a66597_read(r8a66597, SYSCFG0);
+		if (i++ > 1000) {
+			err("register access fail.");
+			return -ENXIO;
+		}
+	} while ((tmp & USBE) != USBE);
+	r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+	r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
+
+	i = 0;
+	r8a66597_bset(r8a66597, XCKE, SYSCFG0);
+	do {
+		msleep(1);
+		tmp = r8a66597_read(r8a66597, SYSCFG0);
+		if (i++ > 500) {
+			err("register access fail.");
+			return -ENXIO;
+		}
+	} while ((tmp & SCKE) != SCKE);
+
+	r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
+	r8a66597_bset(r8a66597, DRPD, SYSCFG1);
+
+	r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
+	r8a66597_bset(r8a66597, HSE, SYSCFG0);
+	r8a66597_bset(r8a66597, HSE, SYSCFG1);
+	r8a66597_bset(r8a66597, USBE, SYSCFG0);
+
+	r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
+	r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
+	r8a66597_bset(r8a66597, BRDY0, BRDYENB);
+	r8a66597_bset(r8a66597, BEMP0, BEMPENB);
+
+	r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
+	r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
+
+	r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
+	r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
+	r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
+
+	r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
+
+	r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
+	r8a66597_bclr(r8a66597, DTCHE, INTENB1);
+	r8a66597_bset(r8a66597, ATTCHE, INTENB1);
+	r8a66597_bclr(r8a66597, DTCHE, INTENB2);
+	r8a66597_bset(r8a66597, ATTCHE, INTENB2);
+
+	return 0;
+}
+
+static void disable_controller(struct r8a66597 *r8a66597)
+{
+	u16 tmp;
+
+	r8a66597_write(r8a66597, 0, INTENB0);
+	r8a66597_write(r8a66597, 0, INTENB1);
+	r8a66597_write(r8a66597, 0, INTENB2);
+	r8a66597_write(r8a66597, 0, INTSTS0);
+	r8a66597_write(r8a66597, 0, INTSTS1);
+	r8a66597_write(r8a66597, 0, INTSTS2);
+
+	r8a66597_port_power(r8a66597, 0, 0);
+	r8a66597_port_power(r8a66597, 1, 0);
+
+	do {
+		tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
+		udelay(640);
+	} while (tmp == EDGESTS);
+
+	r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
+	r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
+	r8a66597_bclr(r8a66597, HSE, SYSCFG0);
+	r8a66597_bclr(r8a66597, HSE, SYSCFG1);
+
+	r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
+	udelay(1);
+	r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
+	r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
+	r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+}
+
+static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
+				       struct usb_device *udev)
+{
+	struct r8a66597_device *dev;
+
+	if (udev->parent && udev->parent->devnum != 1)
+		udev = udev->parent;
+
+	dev = dev_get_drvdata(&udev->dev);
+	if (dev)
+		return dev->address;
+	else
+		return 0;
+}
+
+static int is_child_device(char *devpath)
+{
+	return (devpath[2] ? 1 : 0);
+}
+
+static int is_hub_limit(char *devpath)
+{
+	return ((strlen(devpath) >= 4) ? 1 : 0);
+}
+
+static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
+{
+	if (root_port) {
+		*root_port = (devpath[0] & 0x0F) - 1;
+		if (*root_port >= R8A66597_MAX_ROOT_HUB)
+			err("illegal root port number");
+	}
+	if (hub_port)
+		*hub_port = devpath[2] & 0x0F;
+}
+
+static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
+{
+	u16 usbspd = 0;
+
+	switch (speed) {
+	case USB_SPEED_LOW:
+		usbspd = LSMODE;
+		break;
+	case USB_SPEED_FULL:
+		usbspd = FSMODE;
+		break;
+	case USB_SPEED_HIGH:
+		usbspd = HSMODE;
+		break;
+	default:
+		err("unknown speed");
+		break;
+	}
+
+	return usbspd;
+}
+
+static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
+{
+	int idx;
+
+	idx = address / 32;
+	r8a66597->child_connect_map[idx] |= 1 << (address % 32);
+}
+
+static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
+{
+	int idx;
+
+	idx = address / 32;
+	r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
+}
+
+static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
+{
+	u16 pipenum = pipe->info.pipenum;
+	unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
+	unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
+	unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
+
+	if (dma_ch > R8A66597_PIPE_NO_DMA)	/* dma fifo not use? */
+		dma_ch = R8A66597_PIPE_NO_DMA;
+
+	pipe->fifoaddr = fifoaddr[dma_ch];
+	pipe->fifosel = fifosel[dma_ch];
+	pipe->fifoctr = fifoctr[dma_ch];
+
+	if (pipenum == 0)
+		pipe->pipectr = DCPCTR;
+	else
+		pipe->pipectr = get_pipectr_addr(pipenum);
+
+	if (check_bulk_or_isoc(pipenum)) {
+		pipe->pipetre = get_pipetre_addr(pipenum);
+		pipe->pipetrn = get_pipetrn_addr(pipenum);
+	} else {
+		pipe->pipetre = 0;
+		pipe->pipetrn = 0;
+	}
+}
+
+static struct r8a66597_device *
+get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
+{
+	if (usb_pipedevice(urb->pipe) == 0)
+		return &r8a66597->device0;
+
+	return dev_get_drvdata(&urb->dev->dev);
+}
+
+static int make_r8a66597_device(struct r8a66597 *r8a66597,
+				struct urb *urb, u8 addr)
+{
+	struct r8a66597_device *dev;
+	int usb_address = urb->setup_packet[2];	/* urb->pipe is address 0 */
+
+	dev = kzalloc(sizeof(struct r8a66597_device), GFP_KERNEL);
+	if (dev == NULL)
+		return -ENOMEM;
+
+	dev_set_drvdata(&urb->dev->dev, dev);
+	dev->udev = urb->dev;
+	dev->address = addr;
+	dev->usb_address = usb_address;
+	dev->state = USB_STATE_ADDRESS;
+	dev->ep_in_toggle = 0;
+	dev->ep_out_toggle = 0;
+	INIT_LIST_HEAD(&dev->device_list);
+	list_add_tail(&dev->device_list, &r8a66597->child_device);
+
+	get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
+	if (!is_child_device(urb->dev->devpath))
+		r8a66597->root_hub[dev->root_port].dev = dev;
+
+	set_devadd_reg(r8a66597, dev->address,
+		       get_r8a66597_usb_speed(urb->dev->speed),
+		       get_parent_r8a66597_address(r8a66597, urb->dev),
+		       dev->hub_port, dev->root_port);
+
+	return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
+{
+	u8 addr;	/* R8A66597's address */
+	struct r8a66597_device *dev;
+
+	if (is_hub_limit(urb->dev->devpath)) {
+		err("Externel hub limit reached.");
+		return 0;
+	}
+
+	dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+	if (dev && dev->state >= USB_STATE_ADDRESS)
+		return dev->address;
+
+	for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
+		if (r8a66597->address_map & (1 << addr))
+			continue;
+
+		dbg("alloc_address: r8a66597_addr=%d", addr);
+		r8a66597->address_map |= 1 << addr;
+
+		if (make_r8a66597_device(r8a66597, urb, addr) < 0)
+			return 0;
+
+		return addr;
+	}
+
+	err("cannot communicate with a USB device more than 10.(%x)",
+	    r8a66597->address_map);
+
+	return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static void free_usb_address(struct r8a66597 *r8a66597,
+			     struct r8a66597_device *dev)
+{
+	int port;
+
+	if (!dev)
+		return;
+
+	dbg("free_addr: addr=%d", dev->address);
+
+	dev->state = USB_STATE_DEFAULT;
+	r8a66597->address_map &= ~(1 << dev->address);
+	dev->address = 0;
+	dev_set_drvdata(&dev->udev->dev, NULL);
+	list_del(&dev->device_list);
+	kfree(dev);
+
+	for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
+		if (r8a66597->root_hub[port].dev == dev) {
+			r8a66597->root_hub[port].dev = NULL;
+			break;
+		}
+	}
+}
+
+static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
+			      u16 mask, u16 loop)
+{
+	u16 tmp;
+	int i = 0;
+
+	do {
+		tmp = r8a66597_read(r8a66597, reg);
+		if (i++ > 1000000) {
+			err("register%lx, loop %x is timeout", reg, loop);
+			break;
+		}
+		ndelay(1);
+	} while ((tmp & mask) != loop);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
+{
+	u16 tmp;
+
+	tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
+	if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
+		r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
+	r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
+{
+	u16 tmp;
+
+	tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
+	if ((tmp & PID_STALL11) != PID_STALL11)	/* force stall? */
+		r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
+	r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
+	r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
+}
+
+/* this function must be called with interrupt disabled */
+static void clear_all_buffer(struct r8a66597 *r8a66597,
+			     struct r8a66597_pipe *pipe)
+{
+	u16 tmp;
+
+	if (!pipe || pipe->info.pipenum == 0)
+		return;
+
+	pipe_stop(r8a66597, pipe);
+	r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
+	tmp = r8a66597_read(r8a66597, pipe->pipectr);
+	tmp = r8a66597_read(r8a66597, pipe->pipectr);
+	tmp = r8a66597_read(r8a66597, pipe->pipectr);
+	r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
+				 struct r8a66597_pipe *pipe, int toggle)
+{
+	if (toggle)
+		r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
+	else
+		r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
+}
+
+/* this function must be called with interrupt disabled */
+static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
+{
+	r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
+	r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
+}
+
+/* this function must be called with interrupt disabled */
+static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
+					 struct r8a66597_pipe *pipe)
+{
+	cfifo_change(r8a66597, 0);
+	r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
+	r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
+
+	r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
+		      pipe->fifosel);
+	r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
+}
+
+static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
+{
+	struct r8a66597_pipe *pipe = hep->hcpriv;
+
+	if (usb_pipeendpoint(urb->pipe) == 0)
+		return 0;
+	else
+		return pipe->info.pipenum;
+}
+
+static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
+{
+	struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+
+	return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
+}
+
+static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
+					  int urb_pipe)
+{
+	if (!dev)
+		return NULL;
+
+	return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_toggle_set(struct r8a66597 *r8a66597,
+			    struct r8a66597_pipe *pipe,
+			    struct urb *urb, int set)
+{
+	struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+	unsigned char endpoint = usb_pipeendpoint(urb->pipe);
+	unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
+
+	if (!toggle)
+		return;
+
+	if (set)
+		*toggle |= 1 << endpoint;
+	else
+		*toggle &= ~(1 << endpoint);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_toggle_save(struct r8a66597 *r8a66597,
+			     struct r8a66597_pipe *pipe,
+			     struct urb *urb)
+{
+	if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
+		pipe_toggle_set(r8a66597, pipe, urb, 1);
+	else
+		pipe_toggle_set(r8a66597, pipe, urb, 0);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_toggle_restore(struct r8a66597 *r8a66597,
+				struct r8a66597_pipe *pipe,
+				struct urb *urb)
+{
+	struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+	unsigned char endpoint = usb_pipeendpoint(urb->pipe);
+	unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
+
+	r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_buffer_setting(struct r8a66597 *r8a66597,
+				struct r8a66597_pipe_info *info)
+{
+	u16 val = 0;
+
+	if (info->pipenum == 0)
+		return;
+
+	r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
+	r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
+	r8a66597_write(r8a66597, info->pipenum, PIPESEL);
+	if (!info->dir_in)
+		val |= R8A66597_DIR;
+	if (info->type == R8A66597_BULK && info->dir_in)
+		val |= R8A66597_DBLB | R8A66597_SHTNAK;
+	val |= info->type | info->epnum;
+	r8a66597_write(r8a66597, val, PIPECFG);
+
+	r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
+		       PIPEBUF);
+	r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
+		       PIPEMAXP);
+	if (info->interval)
+		info->interval--;
+	r8a66597_write(r8a66597, info->interval, PIPEPERI);
+}
+
+
+
+/* this function must be called with interrupt disabled */
+static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
+{
+	struct r8a66597_pipe_info *info;
+	struct urb *urb = td->urb;
+
+	if (td->pipenum > 0) {
+		info = &td->pipe->info;
+		cfifo_change(r8a66597, 0);
+		pipe_buffer_setting(r8a66597, info);
+
+		if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+				   usb_pipeout(urb->pipe)) &&
+		    !usb_pipecontrol(urb->pipe)) {
+			r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
+			pipe_toggle_set(r8a66597, td->pipe, urb, 0);
+			clear_all_buffer(r8a66597, td->pipe);
+			usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+				      usb_pipeout(urb->pipe), 1);
+		}
+		pipe_toggle_restore(r8a66597, td->pipe, urb);
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
+			     struct usb_endpoint_descriptor *ep)
+{
+	u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
+
+	memset(array, 0, sizeof(array));
+        switch(ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+        case USB_ENDPOINT_XFER_BULK:
+		if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+			array[i++] = 4;
+		else {
+			array[i++] = 3;
+			array[i++] = 5;
+		}
+                break;
+        case USB_ENDPOINT_XFER_INT:
+		if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
+			array[i++] = 6;
+			array[i++] = 7;
+			array[i++] = 8;
+		} else
+			array[i++] = 9;
+                break;
+        case USB_ENDPOINT_XFER_ISOC:
+		if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+			array[i++] = 2;
+		else
+			array[i++] = 1;
+                break;
+        default:
+                err("Illegal type");
+                return 0;
+        }
+
+	i = 1;
+	min = array[0];
+	while (array[i] != 0) {
+		if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
+			min = array[i];
+		i++;
+	}
+
+	return min;
+}
+
+static u16 get_r8a66597_type(__u8 type)
+{
+	u16 r8a66597_type;
+
+	switch(type) {
+	case USB_ENDPOINT_XFER_BULK:
+		r8a66597_type = R8A66597_BULK;
+		break;
+	case USB_ENDPOINT_XFER_INT:
+		r8a66597_type = R8A66597_INT;
+		break;
+	case USB_ENDPOINT_XFER_ISOC:
+		r8a66597_type = R8A66597_ISO;
+		break;
+	default:
+		err("Illegal type");
+		r8a66597_type = 0x0000;
+		break;
+	}
+
+	return r8a66597_type;
+}
+
+static u16 get_bufnum(u16 pipenum)
+{
+	u16 bufnum = 0;
+
+	if (pipenum == 0)
+		bufnum = 0;
+	else if (check_bulk_or_isoc(pipenum))
+		bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
+	else if (check_interrupt(pipenum))
+		bufnum = 4 + (pipenum - 6);
+	else
+		err("Illegal pipenum (%d)", pipenum);
+
+	return bufnum;
+}
+
+static u16 get_buf_bsize(u16 pipenum)
+{
+	u16 buf_bsize = 0;
+
+	if (pipenum == 0)
+		buf_bsize = 3;
+	else if (check_bulk_or_isoc(pipenum))
+		buf_bsize = R8A66597_BUF_BSIZE - 1;
+	else if (check_interrupt(pipenum))
+		buf_bsize = 0;
+	else
+		err("Illegal pipenum (%d)", pipenum);
+
+	return buf_bsize;
+}
+
+/* this function must be called with interrupt disabled */
+static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
+				     struct r8a66597_device *dev,
+				     struct r8a66597_pipe *pipe,
+				     struct urb *urb)
+{
+	int i;
+	struct r8a66597_pipe_info *info = &pipe->info;
+
+	if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
+		for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
+			if ((r8a66597->dma_map & (1 << i)) != 0)
+				continue;
+
+			info("address %d, EndpointAddress 0x%02x use DMA FIFO",
+			     usb_pipedevice(urb->pipe),
+			     info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
+					    : info->epnum);
+
+			r8a66597->dma_map |= 1 << i;
+			dev->dma_map |= 1 << i;
+			set_pipe_reg_addr(pipe, i);
+
+			cfifo_change(r8a66597, 0);
+			r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
+				      MBW | CURPIPE, pipe->fifosel);
+
+			r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
+					  pipe->info.pipenum);
+			r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
+			break;
+		}
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
+				 struct usb_host_endpoint *hep,
+				 struct r8a66597_pipe_info *info)
+{
+	struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+	struct r8a66597_pipe *pipe = hep->hcpriv;
+
+	dbg("enable_pipe:");
+
+	pipe->info = *info;
+	set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
+	r8a66597->pipe_cnt[pipe->info.pipenum]++;
+	dev->pipe_cnt[pipe->info.pipenum]++;
+
+	enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
+}
+
+/* this function must be called with interrupt disabled */
+static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
+{
+	struct r8a66597_td *td, *next;
+	struct urb *urb;
+	struct list_head *list = &r8a66597->pipe_queue[pipenum];
+
+	if (list_empty(list))
+		return;
+
+	list_for_each_entry_safe(td, next, list, queue) {
+		if (!td)
+			continue;
+		if (td->address != address)
+			continue;
+
+		urb = td->urb;
+		list_del(&td->queue);
+		kfree(td);
+
+		if (urb) {
+			urb->status = -ENODEV;
+			urb->hcpriv = NULL;
+			spin_unlock(&r8a66597->lock);
+			usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb);
+			spin_lock(&r8a66597->lock);
+		}
+		break;
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
+				      struct r8a66597_device *dev)
+{
+	int check_ep0 = 0;
+	u16 pipenum;
+
+	if (!dev)
+		return;
+
+	for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+		if (!dev->pipe_cnt[pipenum])
+			continue;
+
+		if (!check_ep0) {
+			check_ep0 = 1;
+			force_dequeue(r8a66597, 0, dev->address);
+		}
+
+		r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
+		dev->pipe_cnt[pipenum] = 0;
+		force_dequeue(r8a66597, pipenum, dev->address);
+	}
+
+	dbg("disable_pipe");
+
+	r8a66597->dma_map &= ~(dev->dma_map);
+	dev->dma_map = 0;
+}
+
+/* this function must be called with interrupt disabled */
+static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
+			   struct usb_host_endpoint *hep,
+			   struct usb_endpoint_descriptor *ep)
+{
+	struct r8a66597_pipe_info info;
+
+	info.pipenum = get_empty_pipenum(r8a66597, ep);
+	info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
+	info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+	info.maxpacket = ep->wMaxPacketSize;
+	info.type = get_r8a66597_type(ep->bmAttributes
+				      & USB_ENDPOINT_XFERTYPE_MASK);
+	info.bufnum = get_bufnum(info.pipenum);
+	info.buf_bsize = get_buf_bsize(info.pipenum);
+	info.interval = ep->bInterval;
+	if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+		info.dir_in = 1;
+	else
+		info.dir_in = 0;
+
+	enable_r8a66597_pipe(r8a66597, urb, hep, &info);
+}
+
+static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
+{
+	struct r8a66597_device *dev;
+
+	dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+	dev->state = USB_STATE_CONFIGURED;
+}
+
+static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
+			    u16 pipenum)
+{
+	if (pipenum == 0 && usb_pipeout(urb->pipe))
+		enable_irq_empty(r8a66597, pipenum);
+	else
+		enable_irq_ready(r8a66597, pipenum);
+
+	if (!usb_pipeisoc(urb->pipe))
+		enable_irq_nrdy(r8a66597, pipenum);
+}
+
+static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
+{
+	disable_irq_ready(r8a66597, pipenum);
+	disable_irq_nrdy(r8a66597, pipenum);
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
+{
+	r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
+					 | (1 << USB_PORT_FEAT_C_CONNECTION);
+	r8a66597_write(r8a66597, (u16)~DTCH, get_intsts_reg(port));
+	r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
+{
+	u16 speed = get_rh_usb_speed(r8a66597, port);
+	struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+	if (speed == HSMODE)
+		rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
+	else if (speed == LSMODE)
+		rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
+
+	rh->port &= ~(1 << USB_PORT_FEAT_RESET);
+	rh->port |= 1 << USB_PORT_FEAT_ENABLE;
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
+{
+	struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
+
+	r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
+	r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
+
+	disable_r8a66597_pipe_all(r8a66597, dev);
+	free_usb_address(r8a66597, dev);
+
+	r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_setup_packet(struct r8a66597 *r8a66597,
+				 struct r8a66597_td *td)
+{
+	int i;
+	u16 *p = (u16 *)td->urb->setup_packet;
+	unsigned long setup_addr = USBREQ;
+
+	r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
+		       DCPMAXP);
+	r8a66597_write(r8a66597, (u16)~(SIGN | SACK), INTSTS1);
+
+	for (i = 0; i < 4; i++) {
+		r8a66597_write(r8a66597, p[i], setup_addr);
+		setup_addr += 2;
+	}
+	r8a66597_write(r8a66597, SUREQ, DCPCTR);
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_packet_read(struct r8a66597 *r8a66597,
+				struct r8a66597_td *td)
+{
+	struct urb *urb = td->urb;
+
+	if (usb_pipecontrol(urb->pipe)) {
+		r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
+		r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
+		r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+		if (urb->actual_length == 0) {
+			r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+			r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+		}
+		pipe_irq_disable(r8a66597, td->pipenum);
+		pipe_start(r8a66597, td->pipe);
+		pipe_irq_enable(r8a66597, urb, td->pipenum);
+	} else {
+		if (urb->actual_length == 0) {
+			pipe_irq_disable(r8a66597, td->pipenum);
+			pipe_setting(r8a66597, td);
+			pipe_stop(r8a66597, td->pipe);
+			r8a66597_write(r8a66597, (u16)~(1 << td->pipenum),
+				       BRDYSTS);
+
+			if (td->pipe->pipetre) {
+				r8a66597_write(r8a66597, TRCLR,
+					        td->pipe->pipetre);
+				r8a66597_write(r8a66597,
+					       (urb->transfer_buffer_length
+					       + td->maxpacket - 1)
+					       / td->maxpacket,
+					       td->pipe->pipetrn);
+				r8a66597_bset(r8a66597, TRENB,
+					      td->pipe->pipetre);
+			}
+
+			pipe_start(r8a66597, td->pipe);
+			pipe_irq_enable(r8a66597, urb, td->pipenum);
+		}
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_packet_write(struct r8a66597 *r8a66597,
+				 struct r8a66597_td *td)
+{
+	u16 tmp;
+	struct urb *urb = td->urb;
+
+	if (usb_pipecontrol(urb->pipe)) {
+		pipe_stop(r8a66597, td->pipe);
+		r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
+		r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
+		r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+		if (urb->actual_length == 0) {
+			r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+			r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+		}
+	} else {
+		if (urb->actual_length == 0)
+			pipe_setting(r8a66597, td);
+		if (td->pipe->pipetre)
+			r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
+	}
+	r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), BRDYSTS);
+
+	fifo_change_from_pipe(r8a66597, td->pipe);
+	tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
+	if (unlikely((tmp & FRDY) == 0))
+		pipe_irq_enable(r8a66597, urb, td->pipenum);
+	else
+		packet_write(r8a66597, td->pipenum);
+	pipe_start(r8a66597, td->pipe);
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_status_packet(struct r8a66597 *r8a66597,
+				  struct r8a66597_td *td)
+{
+	struct urb *urb = td->urb;
+
+	r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+
+	if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
+		r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
+		r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
+		r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+		r8a66597_write(r8a66597, BVAL | BCLR, CFIFOCTR);
+		r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
+		enable_irq_empty(r8a66597, 0);
+	} else {
+		r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
+		r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
+		r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+		r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+		r8a66597_write(r8a66597, (u16)~BRDY0, BRDYSTS);
+		r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
+		enable_irq_ready(r8a66597, 0);
+	}
+	enable_irq_nrdy(r8a66597, 0);
+	pipe_start(r8a66597, td->pipe);
+}
+
+/* this function must be called with interrupt disabled */
+static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
+{
+	BUG_ON(!td);
+
+	switch (td->type) {
+	case USB_PID_SETUP:
+		if (td->urb->setup_packet[1] == USB_REQ_SET_ADDRESS) {
+			td->set_address = 1;
+			td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
+								     td->urb);
+			if (td->urb->setup_packet[2] == 0)
+				return -EPIPE;
+		}
+		prepare_setup_packet(r8a66597, td);
+		break;
+	case USB_PID_IN:
+		prepare_packet_read(r8a66597, td);
+		break;
+	case USB_PID_OUT:
+		prepare_packet_write(r8a66597, td);
+		break;
+	case USB_PID_ACK:
+		prepare_status_packet(r8a66597, td);
+		break;
+	default:
+		err("invalid type.");
+		break;
+	}
+
+	return 0;
+}
+
+static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
+{
+	if (usb_pipeisoc(urb->pipe)) {
+		if (urb->number_of_packets == td->iso_cnt)
+			return 1;
+	}
+
+	/* control or bulk or interrupt */
+	if ((urb->transfer_buffer_length <= urb->actual_length) ||
+	    (td->short_packet) || (td->zero_packet))
+		return 1;
+
+	return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
+{
+	unsigned long time;
+
+	BUG_ON(!td);
+
+	if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
+	    !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
+		r8a66597->timeout_map |= 1 << td->pipenum;
+		switch (usb_pipetype(td->urb->pipe)) {
+		case PIPE_INTERRUPT:
+		case PIPE_ISOCHRONOUS:
+			time = 30;
+			break;
+		default:
+			time = 300;
+			break;
+		}
+
+		mod_timer(&r8a66597->td_timer[td->pipenum],
+			  jiffies + msecs_to_jiffies(time));
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
+		 u16 pipenum, struct urb *urb)
+{
+	int restart = 0;
+	struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
+
+	r8a66597->timeout_map &= ~(1 << pipenum);
+
+	if (likely(td)) {
+		if (td->set_address && urb->status != 0)
+			r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
+
+		pipe_toggle_save(r8a66597, td->pipe, urb);
+		list_del(&td->queue);
+		kfree(td);
+	}
+
+	if (!list_empty(&r8a66597->pipe_queue[pipenum]))
+		restart = 1;
+
+	if (likely(urb)) {
+		if (usb_pipeisoc(urb->pipe))
+			urb->start_frame = r8a66597_get_frame(hcd);
+
+		urb->hcpriv = NULL;
+		spin_unlock(&r8a66597->lock);
+		usb_hcd_giveback_urb(hcd, urb);
+		spin_lock(&r8a66597->lock);
+	}
+
+	if (restart) {
+		td = r8a66597_get_td(r8a66597, pipenum);
+		if (unlikely(!td))
+			return;
+
+		start_transfer(r8a66597, td);
+		set_td_timer(r8a66597, td);
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
+			   u16 pipenum, struct urb *urb)
+__releases(r8a66597->lock) __acquires(r8a66597->lock)
+{
+	done(r8a66597, td, pipenum, urb);
+}
+
+static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
+{
+	u16 tmp;
+	int rcv_len, bufsize, urb_len, size;
+	u16 *buf;
+	struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
+	struct urb *urb;
+	int finish = 0;
+
+	if (unlikely(!td))
+		return;
+	urb = td->urb;
+
+	fifo_change_from_pipe(r8a66597, td->pipe);
+	tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
+	if (unlikely((tmp & FRDY) == 0)) {
+		urb->status = -EPIPE;
+		pipe_stop(r8a66597, td->pipe);
+		pipe_irq_disable(r8a66597, pipenum);
+		err("in fifo not ready (%d)", pipenum);
+		finish_request(r8a66597, td, pipenum, td->urb);
+		return;
+	}
+
+	/* prepare parameters */
+	rcv_len = tmp & DTLN;
+	bufsize = td->maxpacket;
+	if (usb_pipeisoc(urb->pipe)) {
+		buf = (u16 *)(urb->transfer_buffer +
+				urb->iso_frame_desc[td->iso_cnt].offset);
+		urb_len = urb->iso_frame_desc[td->iso_cnt].length;
+	} else {
+		buf = (void *)urb->transfer_buffer + urb->actual_length;
+		urb_len = urb->transfer_buffer_length - urb->actual_length;
+	}
+	if (rcv_len < bufsize)
+		size = min(rcv_len, urb_len);
+	else
+		size = min(bufsize, urb_len);
+
+	/* update parameters */
+	urb->actual_length += size;
+	if (rcv_len == 0)
+		td->zero_packet = 1;
+	if ((size % td->maxpacket) > 0) {
+		td->short_packet = 1;
+		if (urb->transfer_buffer_length != urb->actual_length &&
+		    urb->transfer_flags & URB_SHORT_NOT_OK)
+			td->urb->status = -EREMOTEIO;
+	}
+	if (usb_pipeisoc(urb->pipe)) {
+		urb->iso_frame_desc[td->iso_cnt].actual_length = size;
+		urb->iso_frame_desc[td->iso_cnt].status = 0;
+		td->iso_cnt++;
+	}
+
+	/* check transfer finish */
+	if (check_transfer_finish(td, urb)) {
+		pipe_stop(r8a66597, td->pipe);
+		pipe_irq_disable(r8a66597, pipenum);
+		finish = 1;
+	}
+
+	/* read fifo */
+	if (urb->transfer_buffer) {
+		if (size == 0)
+			r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
+		else
+			r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
+					   buf, size);
+	}
+
+	if (finish && pipenum != 0) {
+		if (td->urb->status == -EINPROGRESS)
+			td->urb->status = 0;
+		finish_request(r8a66597, td, pipenum, urb);
+	}
+}
+
+static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
+{
+	u16 tmp;
+	int bufsize, size;
+	u16 *buf;
+	struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
+	struct urb *urb;
+
+	if (unlikely(!td))
+		return;
+	urb = td->urb;
+
+	fifo_change_from_pipe(r8a66597, td->pipe);
+	tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
+	if (unlikely((tmp & FRDY) == 0)) {
+		urb->status = -EPIPE;
+		pipe_stop(r8a66597, td->pipe);
+		pipe_irq_disable(r8a66597, pipenum);
+		err("out write fifo not ready. (%d)", pipenum);
+		finish_request(r8a66597, td, pipenum, td->urb);
+		return;
+	}
+
+	/* prepare parameters */
+	bufsize = td->maxpacket;
+	if (usb_pipeisoc(urb->pipe)) {
+		buf = (u16 *)(urb->transfer_buffer +
+				urb->iso_frame_desc[td->iso_cnt].offset);
+		size = min(bufsize,
+			   (int)urb->iso_frame_desc[td->iso_cnt].length);
+	} else {
+		buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
+		size = min((int)bufsize,
+			   urb->transfer_buffer_length - urb->actual_length);
+	}
+
+	/* write fifo */
+	if (pipenum > 0)
+		r8a66597_write(r8a66597, (u16)~(1 << pipenum), BEMPSTS);
+	if (urb->transfer_buffer) {
+		r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
+		if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
+			r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
+	}
+
+	/* update parameters */
+	urb->actual_length += size;
+	if (usb_pipeisoc(urb->pipe)) {
+		urb->iso_frame_desc[td->iso_cnt].actual_length = size;
+		urb->iso_frame_desc[td->iso_cnt].status = 0;
+		td->iso_cnt++;
+	}
+
+	/* check transfer finish */
+	if (check_transfer_finish(td, urb)) {
+		disable_irq_ready(r8a66597, pipenum);
+		enable_irq_empty(r8a66597, pipenum);
+		if (!usb_pipeisoc(urb->pipe))
+			enable_irq_nrdy(r8a66597, pipenum);
+	} else
+		pipe_irq_enable(r8a66597, urb, pipenum);
+}
+
+
+static void check_next_phase(struct r8a66597 *r8a66597)
+{
+	struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
+	struct urb *urb;
+	u8 finish = 0;
+
+	if (unlikely(!td))
+		return;
+	urb = td->urb;
+
+	switch (td->type) {
+	case USB_PID_IN:
+	case USB_PID_OUT:
+		if (urb->status != -EINPROGRESS) {
+			finish = 1;
+			break;
+		}
+		if (check_transfer_finish(td, urb))
+			td->type = USB_PID_ACK;
+		break;
+	case USB_PID_SETUP:
+		if (urb->status != -EINPROGRESS)
+			finish = 1;
+		else if (urb->transfer_buffer_length == urb->actual_length) {
+			td->type = USB_PID_ACK;
+			urb->status = 0;
+		} else if (usb_pipeout(urb->pipe))
+			td->type = USB_PID_OUT;
+		else
+			td->type = USB_PID_IN;
+		break;
+	case USB_PID_ACK:
+		finish = 1;
+		if (urb->status == -EINPROGRESS)
+			urb->status = 0;
+		break;
+	}
+
+	if (finish)
+		finish_request(r8a66597, td, 0, urb);
+	else
+		start_transfer(r8a66597, td);
+}
+
+static void set_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
+{
+	struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
+
+	if (td && td->urb) {
+		u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
+
+		if (pid == PID_NAK)
+			td->urb->status = -ECONNRESET;
+		else
+			td->urb->status = -EPIPE;
+	}
+}
+
+static void irq_pipe_ready(struct r8a66597 *r8a66597)
+{
+	u16 check;
+	u16 pipenum;
+	u16 mask;
+	struct r8a66597_td *td;
+
+	mask = r8a66597_read(r8a66597, BRDYSTS)
+	       & r8a66597_read(r8a66597, BRDYENB);
+	r8a66597_write(r8a66597, (u16)~mask, BRDYSTS);
+	if (mask & BRDY0) {
+		td = r8a66597_get_td(r8a66597, 0);
+		if (td && td->type == USB_PID_IN)
+			packet_read(r8a66597, 0);
+		else
+			pipe_irq_disable(r8a66597, 0);
+		check_next_phase(r8a66597);
+	}
+
+	for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+		check = 1 << pipenum;
+		if (mask & check) {
+			td = r8a66597_get_td(r8a66597, pipenum);
+			if (unlikely(!td))
+				continue;
+
+			if (td->type == USB_PID_IN)
+				packet_read(r8a66597, pipenum);
+			else if (td->type == USB_PID_OUT)
+				packet_write(r8a66597, pipenum);
+		}
+	}
+}
+
+static void irq_pipe_empty(struct r8a66597 *r8a66597)
+{
+	u16 tmp;
+	u16 check;
+	u16 pipenum;
+	u16 mask;
+	struct r8a66597_td *td;
+
+	mask = r8a66597_read(r8a66597, BEMPSTS)
+	       & r8a66597_read(r8a66597, BEMPENB);
+	r8a66597_write(r8a66597, (u16)~mask, BEMPSTS);
+	if (mask & BEMP0) {
+		cfifo_change(r8a66597, 0);
+		td = r8a66597_get_td(r8a66597, 0);
+		if (td && td->type != USB_PID_OUT)
+			disable_irq_empty(r8a66597, 0);
+		check_next_phase(r8a66597);
+	}
+
+	for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+		check = 1 << pipenum;
+		if (mask &  check) {
+			struct r8a66597_td *td;
+			td = r8a66597_get_td(r8a66597, pipenum);
+			if (unlikely(!td))
+				continue;
+
+			tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
+			if ((tmp & INBUFM) == 0) {
+				disable_irq_empty(r8a66597, pipenum);
+				pipe_irq_disable(r8a66597, pipenum);
+				if (td->urb->status == -EINPROGRESS)
+					td->urb->status = 0;
+				finish_request(r8a66597, td, pipenum, td->urb);
+			}
+		}
+	}
+}
+
+static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
+{
+	u16 check;
+	u16 pipenum;
+	u16 mask;
+
+	mask = r8a66597_read(r8a66597, NRDYSTS)
+	       & r8a66597_read(r8a66597, NRDYENB);
+	r8a66597_write(r8a66597, (u16)~mask, NRDYSTS);
+	if (mask & NRDY0) {
+		cfifo_change(r8a66597, 0);
+		set_urb_error(r8a66597, 0);
+		pipe_irq_disable(r8a66597, 0);
+		check_next_phase(r8a66597);
+	}
+
+	for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+		check = 1 << pipenum;
+		if (mask & check) {
+			struct r8a66597_td *td;
+			td = r8a66597_get_td(r8a66597, pipenum);
+			if (unlikely(!td))
+				continue;
+
+			set_urb_error(r8a66597, pipenum);
+			pipe_irq_disable(r8a66597, pipenum);
+			pipe_stop(r8a66597, td->pipe);
+			finish_request(r8a66597, td, pipenum, td->urb);
+		}
+	}
+}
+
+static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
+{
+	struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+	rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
+	rh->scount = R8A66597_MAX_SAMPLING;
+	mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
+}
+
+static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	u16 intsts0, intsts1, intsts2;
+	u16 intenb0, intenb1, intenb2;
+	u16 mask0, mask1, mask2;
+
+	spin_lock(&r8a66597->lock);
+
+	intsts0 = r8a66597_read(r8a66597, INTSTS0);
+	intsts1 = r8a66597_read(r8a66597, INTSTS1);
+	intsts2 = r8a66597_read(r8a66597, INTSTS2);
+	intenb0 = r8a66597_read(r8a66597, INTENB0);
+	intenb1 = r8a66597_read(r8a66597, INTENB1);
+	intenb2 = r8a66597_read(r8a66597, INTENB2);
+
+	mask2 = intsts2 & intenb2;
+	mask1 = intsts1 & intenb1;
+	mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
+	if (mask2) {
+		if (mask2 & ATTCH) {
+			r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS2);
+			r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
+
+			/* start usb bus sampling */
+			start_root_hub_sampling(r8a66597, 1);
+		}
+		if (mask2 & DTCH) {
+			r8a66597_write(r8a66597, (u16)~DTCH, INTSTS2);
+			r8a66597_bclr(r8a66597, DTCHE, INTENB2);
+			r8a66597_usb_disconnect(r8a66597, 1);
+		}
+	}
+
+	if (mask1) {
+		if (mask1 & ATTCH) {
+			r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS1);
+			r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
+
+			/* start usb bus sampling */
+			start_root_hub_sampling(r8a66597, 0);
+		}
+		if (mask1 & DTCH) {
+			r8a66597_write(r8a66597, (u16)~DTCH, INTSTS1);
+			r8a66597_bclr(r8a66597, DTCHE, INTENB1);
+			r8a66597_usb_disconnect(r8a66597, 0);
+		}
+		if (mask1 & SIGN) {
+			r8a66597_write(r8a66597, (u16)~SIGN, INTSTS1);
+			set_urb_error(r8a66597, 0);
+			check_next_phase(r8a66597);
+		}
+		if (mask1 & SACK) {
+			r8a66597_write(r8a66597, (u16)~SACK, INTSTS1);
+			check_next_phase(r8a66597);
+		}
+	}
+	if (mask0) {
+		if (mask0 & BRDY)
+			irq_pipe_ready(r8a66597);
+		if (mask0 & BEMP)
+			irq_pipe_empty(r8a66597);
+		if (mask0 & NRDY)
+			irq_pipe_nrdy(r8a66597);
+	}
+
+	spin_unlock(&r8a66597->lock);
+	return IRQ_HANDLED;
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
+{
+	u16 tmp;
+	struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+	if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
+		unsigned long dvstctr_reg = get_dvstctr_reg(port);
+
+		tmp = r8a66597_read(r8a66597, dvstctr_reg);
+		if ((tmp & USBRST) == USBRST) {
+			r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
+				      dvstctr_reg);
+			mod_timer(&r8a66597->rh_timer,
+				  jiffies + msecs_to_jiffies(50));
+		} else
+			r8a66597_usb_connect(r8a66597, port);
+	}
+
+	if (rh->scount > 0) {
+		tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
+		if (tmp == rh->old_syssts) {
+			rh->scount--;
+			if (rh->scount == 0) {
+				if (tmp == FS_JSTS) {
+					r8a66597_bset(r8a66597, HSE,
+						      get_syscfg_reg(port));
+					r8a66597_usb_preconnect(r8a66597, port);
+				} else if (tmp == LS_JSTS) {
+					r8a66597_bclr(r8a66597, HSE,
+						      get_syscfg_reg(port));
+					r8a66597_usb_preconnect(r8a66597, port);
+				} else if (tmp == SE0)
+					r8a66597_bset(r8a66597, ATTCHE,
+						      get_intenb_reg(port));
+			} else {
+				mod_timer(&r8a66597->rh_timer,
+					  jiffies + msecs_to_jiffies(50));
+			}
+		} else {
+			rh->scount = R8A66597_MAX_SAMPLING;
+			rh->old_syssts = tmp;
+			mod_timer(&r8a66597->rh_timer,
+				  jiffies + msecs_to_jiffies(50));
+		}
+	}
+}
+
+static void r8a66597_td_timer(unsigned long _r8a66597)
+{
+	struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
+	unsigned long flags;
+	u16 pipenum;
+	struct r8a66597_td *td, *new_td = NULL;
+	struct r8a66597_pipe *pipe;
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+	for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+		if (!(r8a66597->timeout_map & (1 << pipenum)))
+			continue;
+		if (timer_pending(&r8a66597->td_timer[pipenum]))
+			continue;
+
+		td = r8a66597_get_td(r8a66597, pipenum);
+		if (!td) {
+			r8a66597->timeout_map &= ~(1 << pipenum);
+			continue;
+		}
+
+		if (td->urb->actual_length) {
+			set_td_timer(r8a66597, td);
+			break;
+		}
+
+		pipe = td->pipe;
+		pipe_stop(r8a66597, pipe);
+
+		new_td = td;
+		do {
+			list_move_tail(&new_td->queue,
+				       &r8a66597->pipe_queue[pipenum]);
+			new_td = r8a66597_get_td(r8a66597, pipenum);
+			if (!new_td) {
+				new_td = td;
+				break;
+			}
+		} while (td != new_td && td->address == new_td->address);
+
+		start_transfer(r8a66597, new_td);
+
+		if (td == new_td)
+			r8a66597->timeout_map &= ~(1 << pipenum);
+		else
+			set_td_timer(r8a66597, new_td);
+		break;
+	}
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static void r8a66597_timer(unsigned long _r8a66597)
+{
+	struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
+	unsigned long flags;
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+
+	r8a66597_root_hub_control(r8a66597, 0);
+	r8a66597_root_hub_control(r8a66597, 1);
+
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
+{
+	struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+
+	if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
+	    (urb->dev->state == USB_STATE_CONFIGURED))
+		return 1;
+	else
+		return 0;
+}
+
+static int r8a66597_start(struct usb_hcd *hcd)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	int ret;
+
+	hcd->state = HC_STATE_RUNNING;
+	if ((ret = enable_controller(r8a66597)) < 0)
+		return ret;
+
+	return 0;
+}
+
+static void r8a66597_stop(struct usb_hcd *hcd)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+
+	disable_controller(r8a66597);
+}
+
+static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
+{
+	unsigned int usb_address = usb_pipedevice(urb->pipe);
+	u16 root_port, hub_port;
+
+	if (usb_address == 0) {
+		get_port_number(urb->dev->devpath,
+				&root_port, &hub_port);
+		set_devadd_reg(r8a66597, 0,
+			       get_r8a66597_usb_speed(urb->dev->speed),
+			       get_parent_r8a66597_address(r8a66597, urb->dev),
+			       hub_port, root_port);
+	}
+}
+
+static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
+					    struct urb *urb,
+					    struct usb_host_endpoint *hep,
+					    gfp_t mem_flags)
+{
+	struct r8a66597_td *td;
+	u16 pipenum;
+
+	td = kzalloc(sizeof(struct r8a66597_td), mem_flags);
+	if (td == NULL)
+		return NULL;
+
+	pipenum = r8a66597_get_pipenum(urb, hep);
+	td->pipenum = pipenum;
+	td->pipe = hep->hcpriv;
+	td->urb = urb;
+	td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
+	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
+				      !usb_pipein(urb->pipe));
+	if (usb_pipecontrol(urb->pipe))
+		td->type = USB_PID_SETUP;
+	else if (usb_pipein(urb->pipe))
+		td->type = USB_PID_IN;
+	else
+		td->type = USB_PID_OUT;
+	INIT_LIST_HEAD(&td->queue);
+
+	return td;
+}
+
+static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
+				struct usb_host_endpoint *hep,
+				struct urb *urb,
+				gfp_t mem_flags)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	struct r8a66597_td *td = NULL;
+	int ret = 0, request = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+	if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
+		ret = -ENODEV;
+		goto error;
+	}
+
+	if (!hep->hcpriv) {
+		hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), mem_flags);
+		if (!hep->hcpriv) {
+			ret = -ENOMEM;
+			goto error;
+		}
+		set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
+		if (usb_pipeendpoint(urb->pipe))
+			init_pipe_info(r8a66597, urb, hep, &hep->desc);
+	}
+
+	if (unlikely(check_pipe_config(r8a66597, urb)))
+		init_pipe_config(r8a66597, urb);
+
+	set_address_zero(r8a66597, urb);
+	td = r8a66597_make_td(r8a66597, urb, hep, mem_flags);
+	if (td == NULL) {
+		ret = -ENOMEM;
+		goto error;
+	}
+	if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
+		request = 1;
+	list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
+
+	spin_lock(&urb->lock);
+	if (urb->status != -EINPROGRESS) {
+		spin_unlock(&urb->lock);
+		ret = -EPIPE;
+		goto error;
+	}
+	urb->hcpriv = td;
+	spin_unlock(&urb->lock);
+
+	if (request) {
+		ret = start_transfer(r8a66597, td);
+		if (ret < 0) {
+			list_del(&td->queue);
+			kfree(td);
+		}
+	} else
+		set_td_timer(r8a66597, td);
+
+error:
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+	return ret;
+}
+
+static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	struct r8a66597_td *td;
+	unsigned long flags;
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+	if (urb->hcpriv) {
+		td = urb->hcpriv;
+		pipe_stop(r8a66597, td->pipe);
+		pipe_irq_disable(r8a66597, td->pipenum);
+		disable_irq_empty(r8a66597, td->pipenum);
+		done(r8a66597, td, td->pipenum, urb);
+	}
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+	return 0;
+}
+
+static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
+				      struct usb_host_endpoint *hep)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
+	struct r8a66597_td *td;
+	struct urb *urb = NULL;
+	u16 pipenum;
+	unsigned long flags;
+
+	if (pipe == NULL)
+		return;
+	pipenum = pipe->info.pipenum;
+
+	if (pipenum == 0) {
+		kfree(hep->hcpriv);
+		hep->hcpriv = NULL;
+		return;
+	}
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+	pipe_stop(r8a66597, pipe);
+	pipe_irq_disable(r8a66597, pipenum);
+	disable_irq_empty(r8a66597, pipenum);
+	td = r8a66597_get_td(r8a66597, pipenum);
+	if (td)
+		urb = td->urb;
+	done(r8a66597, td, pipenum, urb);
+	kfree(hep->hcpriv);
+	hep->hcpriv = NULL;
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static int r8a66597_get_frame(struct usb_hcd *hcd)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
+}
+
+static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
+{
+	int chix;
+
+	if (udev->state == USB_STATE_CONFIGURED &&
+	    udev->parent && udev->parent->devnum > 1 &&
+	    udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
+		map[udev->devnum/32] |= (1 << (udev->devnum % 32));
+
+	for (chix = 0; chix < udev->maxchild; chix++) {
+		struct usb_device *childdev = udev->children[chix];
+
+		if (childdev)
+			collect_usb_address_map(childdev, map);
+	}
+}
+
+/* this function must be called with interrupt disabled */
+static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
+						   int addr)
+{
+	struct r8a66597_device *dev;
+	struct list_head *list = &r8a66597->child_device;
+
+	list_for_each_entry(dev, list, device_list) {
+		if (!dev)
+			continue;
+		if (dev->usb_address != addr)
+			continue;
+
+		return dev;
+	}
+
+	err("get_r8a66597_device fail.(%d)\n", addr);
+	return NULL;
+}
+
+static void update_usb_address_map(struct r8a66597 *r8a66597,
+				   struct usb_device *root_hub,
+				   unsigned long *map)
+{
+	int i, j, addr;
+	unsigned long diff;
+	unsigned long flags;
+
+	for (i = 0; i < 4; i++) {
+		diff = r8a66597->child_connect_map[i] ^ map[i];
+		if (!diff)
+			continue;
+
+		for (j = 0; j < 32; j++) {
+			if (!(diff & (1 << j)))
+				continue;
+
+			addr = i * 32 + j;
+			if (map[i] & (1 << j))
+				set_child_connect_map(r8a66597, addr);
+			else {
+				struct r8a66597_device *dev;
+
+				spin_lock_irqsave(&r8a66597->lock, flags);
+				dev = get_r8a66597_device(r8a66597, addr);
+				disable_r8a66597_pipe_all(r8a66597, dev);
+				free_usb_address(r8a66597, dev);
+				put_child_connect_map(r8a66597, addr);
+				spin_unlock_irqrestore(&r8a66597->lock, flags);
+			}
+		}
+	}
+}
+
+static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
+					struct usb_hcd *hcd)
+{
+	struct usb_bus *bus;
+	unsigned long now_map[4];
+
+	memset(now_map, 0, sizeof(now_map));
+
+	list_for_each_entry(bus, &usb_bus_list, bus_list) {
+		if (!bus->root_hub)
+			continue;
+
+		if (bus->busnum != hcd->self.busnum)
+			continue;
+
+		collect_usb_address_map(bus->root_hub, now_map);
+		update_usb_address_map(r8a66597, bus->root_hub, now_map);
+	}
+}
+
+static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	unsigned long flags;
+	int i;
+
+	r8a66597_check_detect_child(r8a66597, hcd);
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+
+	*buf = 0;	/* initialize (no change) */
+
+	for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
+		if (r8a66597->root_hub[i].port & 0xffff0000)
+			*buf |= 1 << (i + 1);
+	}
+
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+
+	return (*buf != 0);
+}
+
+static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
+				    struct usb_hub_descriptor *desc)
+{
+	desc->bDescriptorType = 0x29;
+	desc->bHubContrCurrent = 0;
+	desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
+	desc->bDescLength = 9;
+	desc->bPwrOn2PwrGood = 0;
+	desc->wHubCharacteristics = cpu_to_le16(0x0011);
+	desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
+	desc->bitmap[1] = ~0;
+}
+
+static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+				u16 wIndex, char *buf, u16 wLength)
+{
+	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+	int ret;
+	int port = (wIndex & 0x00FF) - 1;
+	struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+	unsigned long flags;
+
+	ret = 0;
+
+	spin_lock_irqsave(&r8a66597->lock, flags);
+	switch (typeReq) {
+	case ClearHubFeature:
+	case SetHubFeature:
+		switch (wValue) {
+		case C_HUB_OVER_CURRENT:
+		case C_HUB_LOCAL_POWER:
+			break;
+		default:
+			goto error;
+		}
+		break;
+	case ClearPortFeature:
+		if (wIndex > R8A66597_MAX_ROOT_HUB)
+			goto error;
+		if (wLength != 0)
+			goto error;
+
+		switch (wValue) {
+		case USB_PORT_FEAT_ENABLE:
+			rh->port &= (1 << USB_PORT_FEAT_POWER);
+			break;
+		case USB_PORT_FEAT_SUSPEND:
+			break;
+		case USB_PORT_FEAT_POWER:
+			r8a66597_port_power(r8a66597, port, 0);
+			break;
+		case USB_PORT_FEAT_C_ENABLE:
+		case USB_PORT_FEAT_C_SUSPEND:
+		case USB_PORT_FEAT_C_CONNECTION:
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+		case USB_PORT_FEAT_C_RESET:
+			break;
+		default:
+			goto error;
+		}
+		rh->port &= ~(1 << wValue);
+		break;
+	case GetHubDescriptor:
+		r8a66597_hub_descriptor(r8a66597,
+					(struct usb_hub_descriptor *)buf);
+		break;
+	case GetHubStatus:
+		*buf = 0x00;
+		break;
+	case GetPortStatus:
+		if (wIndex > R8A66597_MAX_ROOT_HUB)
+			goto error;
+		*(u32 *)buf = rh->port;
+		break;
+	case SetPortFeature:
+		if (wIndex > R8A66597_MAX_ROOT_HUB)
+			goto error;
+		if (wLength != 0)
+			goto error;
+
+		switch (wValue) {
+		case USB_PORT_FEAT_SUSPEND:
+			break;
+		case USB_PORT_FEAT_POWER:
+			r8a66597_port_power(r8a66597, port, 1);
+			rh->port |= (1 << USB_PORT_FEAT_POWER);
+			break;
+		case USB_PORT_FEAT_RESET: {
+			struct r8a66597_device *dev = rh->dev;
+
+			rh->port |= (1 << USB_PORT_FEAT_RESET);
+
+			disable_r8a66597_pipe_all(r8a66597, dev);
+			free_usb_address(r8a66597, dev);
+
+			r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
+				      get_dvstctr_reg(port));
+			mod_timer(&r8a66597->rh_timer,
+				  jiffies + msecs_to_jiffies(50));
+			}
+			break;
+		default:
+			goto error;
+		}
+		rh->port |= 1 << wValue;
+		break;
+	default:
+error:
+		ret = -EPIPE;
+		break;
+	}
+
+	spin_unlock_irqrestore(&r8a66597->lock, flags);
+	return ret;
+}
+
+static struct hc_driver r8a66597_hc_driver = {
+	.description =		hcd_name,
+	.hcd_priv_size =	sizeof(struct r8a66597),
+	.irq =			r8a66597_irq,
+
+	/*
+	 * generic hardware linkage
+	 */
+	.flags =		HCD_USB2,
+
+	.start =		r8a66597_start,
+	.stop =			r8a66597_stop,
+
+	/*
+	 * managing i/o requests and associated device resources
+	 */
+	.urb_enqueue =		r8a66597_urb_enqueue,
+	.urb_dequeue =		r8a66597_urb_dequeue,
+	.endpoint_disable =	r8a66597_endpoint_disable,
+
+	/*
+	 * periodic schedule support
+	 */
+	.get_frame_number =	r8a66597_get_frame,
+
+	/*
+	 * root hub support
+	 */
+	.hub_status_data =	r8a66597_hub_status_data,
+	.hub_control =		r8a66597_hub_control,
+};
+
+#if defined(CONFIG_PM)
+static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	pdev->dev.power.power_state = state;
+	return 0;
+}
+
+static int r8a66597_resume(struct platform_device *pdev)
+{
+	pdev->dev.power.power_state = PMSG_ON;
+	return 0;
+}
+#else	/* if defined(CONFIG_PM) */
+#define r8a66597_suspend	NULL
+#define r8a66597_resume		NULL
+#endif
+
+static int __init_or_module r8a66597_remove(struct platform_device *pdev)
+{
+	struct r8a66597		*r8a66597 = dev_get_drvdata(&pdev->dev);
+	struct usb_hcd		*hcd = r8a66597_to_hcd(r8a66597);
+
+	del_timer_sync(&r8a66597->rh_timer);
+	iounmap((void *)r8a66597->reg);
+	usb_remove_hcd(hcd);
+	usb_put_hcd(hcd);
+	return 0;
+}
+
+#define resource_len(r) (((r)->end - (r)->start) + 1)
+static int __init r8a66597_probe(struct platform_device *pdev)
+{
+	struct resource *res = NULL;
+	int irq = -1;
+	void __iomem *reg = NULL;
+	struct usb_hcd *hcd = NULL;
+	struct r8a66597 *r8a66597;
+	int ret = 0;
+	int i;
+
+	if (pdev->dev.dma_mask) {
+		ret = -EINVAL;
+		err("dma not support");
+		goto clean_up;
+	}
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+					   (char *)hcd_name);
+	if (!res) {
+		ret = -ENODEV;
+		err("platform_get_resource_byname error.");
+		goto clean_up;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		ret = -ENODEV;
+		err("platform_get_irq error.");
+		goto clean_up;
+	}
+
+	reg = ioremap(res->start, resource_len(res));
+	if (reg == NULL) {
+		ret = -ENOMEM;
+		err("ioremap error.");
+		goto clean_up;
+	}
+
+	/* initialize hcd */
+	hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
+	if (!hcd) {
+		ret = -ENOMEM;
+		err("Failed to create hcd");
+		goto clean_up;
+	}
+	r8a66597 = hcd_to_r8a66597(hcd);
+	memset(r8a66597, 0, sizeof(struct r8a66597));
+	dev_set_drvdata(&pdev->dev, r8a66597);
+
+	spin_lock_init(&r8a66597->lock);
+	init_timer(&r8a66597->rh_timer);
+	r8a66597->rh_timer.function = r8a66597_timer;
+	r8a66597->rh_timer.data = (unsigned long)r8a66597;
+	r8a66597->reg = (unsigned long)reg;
+
+	for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
+		INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
+		init_timer(&r8a66597->td_timer[i]);
+		r8a66597->td_timer[i].function = r8a66597_td_timer;
+		r8a66597->td_timer[i].data = (unsigned long)r8a66597;
+	}
+	INIT_LIST_HEAD(&r8a66597->child_device);
+
+	hcd->rsrc_start = res->start;
+	ret = usb_add_hcd(hcd, irq, 0);
+	if (ret != 0) {
+		err("Failed to add hcd");
+		goto clean_up;
+	}
+
+	return 0;
+
+clean_up:
+	if (reg)
+		iounmap(reg);
+	if (res)
+		release_mem_region(res->start, 1);
+
+	return ret;
+}
+
+static struct platform_driver r8a66597_driver = {
+	.probe =	r8a66597_probe,
+	.remove =	r8a66597_remove,
+	.suspend =	r8a66597_suspend,
+	.resume =	r8a66597_resume,
+	.driver		= {
+		.name = (char *) hcd_name,
+	},
+};
+
+static int __init r8a66597_init(void)
+{
+	if (usb_disabled())
+		return -ENODEV;
+
+	info("driver %s, %s", hcd_name, DRIVER_VERSION);
+	return platform_driver_register(&r8a66597_driver);
+}
+module_init(r8a66597_init);
+
+static void __exit r8a66597_cleanup(void)
+{
+	platform_driver_unregister(&r8a66597_driver);
+}
+module_exit(r8a66597_cleanup);
+