[MIPS] Alchemy: nuke usbdev; it's useless as is ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

11 files changed, 9 insertions, 1662 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 731b942a824b..14af6cce2fa2 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1010,11 +1010,6 @@ endchoice
 config ARC32
 	bool
 
-config AU1X00_USB_DEVICE
-	bool
-	depends on MIPS_PB1500 || MIPS_PB1100 || MIPS_PB1000
-	default n
-
 config BOOT_ELF32
 	bool
 
diff --git a/arch/mips/au1000/common/Makefile b/arch/mips/au1000/common/Makefile
index bf682f50b859..4c35525edb4f 100644
--- a/arch/mips/au1000/common/Makefile
+++ b/arch/mips/au1000/common/Makefile
@@ -10,6 +10,5 @@ obj-y += prom.o irq.o puts.o time.o reset.o \
 	au1xxx_irqmap.o clocks.o platform.o power.o setup.o \
 	sleeper.o cputable.o dma.o dbdma.o gpio.o
 
-obj-$(CONFIG_AU1X00_USB_DEVICE)	+= usbdev.o
 obj-$(CONFIG_KGDB)		+= dbg_io.o
 obj-$(CONFIG_PCI)		+= pci.o
diff --git a/arch/mips/au1000/common/usbdev.c b/arch/mips/au1000/common/usbdev.c
deleted file mode 100644
index 70dc82e536cd..000000000000
--- a/arch/mips/au1000/common/usbdev.c
+++ /dev/null
@@ -1,1552 +0,0 @@
-/*
- * BRIEF MODULE DESCRIPTION
- *	Au1000 USB Device-Side (device layer)
- *
- * Copyright 2001-2002 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- *		stevel@mvista.com or source@mvista.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;  either version 2 of the	License, or (at your
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
- *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
- *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  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/kernel.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/fcntl.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/smp_lock.h>
-#define DEBUG
-#include <linux/usb.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/irq.h>
-#include <asm/mipsregs.h>
-#include <asm/au1000.h>
-#include <asm/au1000_dma.h>
-#include <asm/au1000_usbdev.h>
-
-#ifdef DEBUG
-#undef VDEBUG
-#ifdef VDEBUG
-#define vdbg(fmt, arg...) printk(KERN_DEBUG __FILE__ ": " fmt "\n" , ## arg)
-#else
-#define vdbg(fmt, arg...) do {} while (0)
-#endif
-#else
-#define vdbg(fmt, arg...) do {} while (0)
-#endif
-
-#define ALLOC_FLAGS (in_interrupt () ? GFP_ATOMIC : GFP_KERNEL)
-
-#define EP_FIFO_DEPTH 8
-
-typedef enum {
-	SETUP_STAGE = 0,
-	DATA_STAGE,
-	STATUS_STAGE
-} ep0_stage_t;
-
-typedef struct {
-	int read_fifo;
-	int write_fifo;
-	int ctrl_stat;
-	int read_fifo_status;
-	int write_fifo_status;
-} endpoint_reg_t;
-
-typedef struct {
-	usbdev_pkt_t *head;
-	usbdev_pkt_t *tail;
-	int count;
-} pkt_list_t;
-
-typedef struct {
-	int active;
-	struct usb_endpoint_descriptor *desc;
-	endpoint_reg_t *reg;
-	/* Only one of these are used, unless this is the control ep */
-	pkt_list_t inlist;
-	pkt_list_t outlist;
-	unsigned int indma, outdma; /* DMA channel numbers for IN, OUT */
-	/* following are extracted from endpoint descriptor for easy access */
-	int max_pkt_size;
-	int type;
-	int direction;
-	/* WE assign endpoint addresses! */
-	int address;
-	spinlock_t lock;
-} endpoint_t;
-
-
-static struct usb_dev {
-	endpoint_t ep[6];
-	ep0_stage_t ep0_stage;
-
-	struct usb_device_descriptor *   dev_desc;
-	struct usb_interface_descriptor* if_desc;
-	struct usb_config_descriptor *   conf_desc;
-	u8 *                             full_conf_desc;
-	struct usb_string_descriptor *   str_desc[6];
-
-	/* callback to function layer */
-	void (*func_cb)(usbdev_cb_type_t type, unsigned long arg,
-			void *cb_data);
-	void* cb_data;
-
-	usbdev_state_t state;	// device state
-	int suspended;		// suspended flag
-	int address;		// device address
-	int interface;
-	int num_ep;
-	u8 alternate_setting;
-	u8 configuration;	// configuration value
-	int remote_wakeup_en;
-} usbdev;
-
-
-static endpoint_reg_t ep_reg[] = {
-	// FIFO's 0 and 1 are EP0 default control
-	{USBD_EP0RD, USBD_EP0WR, USBD_EP0CS, USBD_EP0RDSTAT, USBD_EP0WRSTAT },
-	{0},
-	// FIFO 2 is EP2, IN
-	{ -1, USBD_EP2WR, USBD_EP2CS, -1, USBD_EP2WRSTAT },
-	// FIFO 3 is EP3, IN
-	{    -1,     USBD_EP3WR, USBD_EP3CS,     -1,         USBD_EP3WRSTAT },
-	// FIFO 4 is EP4, OUT
-	{USBD_EP4RD,     -1,     USBD_EP4CS, USBD_EP4RDSTAT,     -1         },
-	// FIFO 5 is EP5, OUT
-	{USBD_EP5RD,     -1,     USBD_EP5CS, USBD_EP5RDSTAT,     -1         }
-};
-
-static struct {
-	unsigned int id;
-	const char *str;
-} ep_dma_id[] = {
-	{ DMA_ID_USBDEV_EP0_TX, "USBDev EP0 IN" },
-	{ DMA_ID_USBDEV_EP0_RX, "USBDev EP0 OUT" },
-	{ DMA_ID_USBDEV_EP2_TX, "USBDev EP2 IN" },
-	{ DMA_ID_USBDEV_EP3_TX, "USBDev EP3 IN" },
-	{ DMA_ID_USBDEV_EP4_RX, "USBDev EP4 OUT" },
-	{ DMA_ID_USBDEV_EP5_RX, "USBDev EP5 OUT" }
-};
-
-#define DIR_OUT 0
-#define DIR_IN  (1<<3)
-
-#define CONTROL_EP USB_ENDPOINT_XFER_CONTROL
-#define BULK_EP    USB_ENDPOINT_XFER_BULK
-
-static inline endpoint_t *
-epaddr_to_ep(struct usb_dev* dev, int ep_addr)
-{
-	if (ep_addr >= 0 && ep_addr < 2)
-		return &dev->ep[0];
-	if (ep_addr < 6)
-		return &dev->ep[ep_addr];
-	return NULL;
-}
-
-static const char* std_req_name[] = {
-	"GET_STATUS",
-	"CLEAR_FEATURE",
-	"RESERVED",
-	"SET_FEATURE",
-	"RESERVED",
-	"SET_ADDRESS",
-	"GET_DESCRIPTOR",
-	"SET_DESCRIPTOR",
-	"GET_CONFIGURATION",
-	"SET_CONFIGURATION",
-	"GET_INTERFACE",
-	"SET_INTERFACE",
-	"SYNCH_FRAME"
-};
-
-static inline const char*
-get_std_req_name(int req)
-{
-	return (req >= 0 && req <= 12) ? std_req_name[req] : "UNKNOWN";
-}
-
-#if 0
-static void
-dump_setup(struct usb_ctrlrequest* s)
-{
-	dbg("%s: requesttype=%d", __FUNCTION__, s->requesttype);
-	dbg("%s: request=%d %s", __FUNCTION__, s->request,
-	    get_std_req_name(s->request));
-	dbg("%s: value=0x%04x", __FUNCTION__, s->wValue);
-	dbg("%s: index=%d", __FUNCTION__, s->index);
-	dbg("%s: length=%d", __FUNCTION__, s->length);
-}
-#endif
-
-static inline usbdev_pkt_t *
-alloc_packet(endpoint_t * ep, int data_size, void* data)
-{
-	usbdev_pkt_t* pkt = kmalloc(sizeof(usbdev_pkt_t) + data_size,
-				    ALLOC_FLAGS);
-	if (!pkt)
-		return NULL;
-	pkt->ep_addr = ep->address;
-	pkt->size = data_size;
-	pkt->status = 0;
-	pkt->next = NULL;
-	if (data)
-		memcpy(pkt->payload, data, data_size);
-
-	return pkt;
-}
-
-
-/*
- * Link a packet to the tail of the enpoint's packet list.
- * EP spinlock must be held when calling.
- */
-static void
-link_tail(endpoint_t * ep, pkt_list_t * list, usbdev_pkt_t * pkt)
-{
-	if (!list->tail) {
-		list->head = list->tail = pkt;
-		list->count = 1;
-	} else {
-		list->tail->next = pkt;
-		list->tail = pkt;
-		list->count++;
-	}
-}
-
-/*
- * Unlink and return a packet from the head of the given packet
- * list. It is the responsibility of the caller to free the packet.
- * EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-unlink_head(pkt_list_t * list)
-{
-	usbdev_pkt_t *pkt;
-
-	pkt = list->head;
-	if (!pkt || !list->count) {
-		return NULL;
-	}
-
-	list->head = pkt->next;
-	if (!list->head) {
-		list->head = list->tail = NULL;
-		list->count = 0;
-	} else
-		list->count--;
-
-	return pkt;
-}
-
-/*
- * Create and attach a new packet to the tail of the enpoint's
- * packet list. EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-add_packet(endpoint_t * ep, pkt_list_t * list, int size)
-{
-	usbdev_pkt_t *pkt = alloc_packet(ep, size, NULL);
-	if (!pkt)
-		return NULL;
-
-	link_tail(ep, list, pkt);
-	return pkt;
-}
-
-
-/*
- * Unlink and free a packet from the head of the enpoint's
- * packet list. EP spinlock must be held when calling.
- */
-static inline void
-free_packet(pkt_list_t * list)
-{
-	kfree(unlink_head(list));
-}
-
-/* EP spinlock must be held when calling. */
-static inline void
-flush_pkt_list(pkt_list_t * list)
-{
-	while (list->count)
-		free_packet(list);
-}
-
-/* EP spinlock must be held when calling */
-static inline void
-flush_write_fifo(endpoint_t * ep)
-{
-	if (ep->reg->write_fifo_status >= 0) {
-		au_writel(USBDEV_FSTAT_FLUSH | USBDEV_FSTAT_UF |
-			  USBDEV_FSTAT_OF,
-			  ep->reg->write_fifo_status);
-		//udelay(100);
-		//au_writel(USBDEV_FSTAT_UF | USBDEV_FSTAT_OF,
-		//	  ep->reg->write_fifo_status);
-	}
-}
-
-/* EP spinlock must be held when calling */
-static inline void
-flush_read_fifo(endpoint_t * ep)
-{
-	if (ep->reg->read_fifo_status >= 0) {
-		au_writel(USBDEV_FSTAT_FLUSH | USBDEV_FSTAT_UF |
-			  USBDEV_FSTAT_OF,
-			  ep->reg->read_fifo_status);
-		//udelay(100);
-		//au_writel(USBDEV_FSTAT_UF | USBDEV_FSTAT_OF,
-		//	  ep->reg->read_fifo_status);
-	}
-}
-
-
-/* EP spinlock must be held when calling. */
-static void
-endpoint_flush(endpoint_t * ep)
-{
-	// First, flush all packets
-	flush_pkt_list(&ep->inlist);
-	flush_pkt_list(&ep->outlist);
-
-	// Now flush the endpoint's h/w FIFO(s)
-	flush_write_fifo(ep);
-	flush_read_fifo(ep);
-}
-
-/* EP spinlock must be held when calling. */
-static void
-endpoint_stall(endpoint_t * ep)
-{
-	u32 cs;
-
-	warn("%s", __FUNCTION__);
-
-	cs = au_readl(ep->reg->ctrl_stat) | USBDEV_CS_STALL;
-	au_writel(cs, ep->reg->ctrl_stat);
-}
-
-/* EP spinlock must be held when calling. */
-static void
-endpoint_unstall(endpoint_t * ep)
-{
-	u32 cs;
-
-	warn("%s", __FUNCTION__);
-
-	cs = au_readl(ep->reg->ctrl_stat) & ~USBDEV_CS_STALL;
-	au_writel(cs, ep->reg->ctrl_stat);
-}
-
-static void
-endpoint_reset_datatoggle(endpoint_t * ep)
-{
-	// FIXME: is this possible?
-}
-
-
-/* EP spinlock must be held when calling. */
-static int
-endpoint_fifo_read(endpoint_t * ep)
-{
-	int read_count = 0;
-	u8 *bufptr;
-	usbdev_pkt_t *pkt = ep->outlist.tail;
-
-	if (!pkt)
-		return -EINVAL;
-
-	bufptr = &pkt->payload[pkt->size];
-	while (au_readl(ep->reg->read_fifo_status) & USBDEV_FSTAT_FCNT_MASK) {
-		*bufptr++ = au_readl(ep->reg->read_fifo) & 0xff;
-		read_count++;
-		pkt->size++;
-	}
-
-	return read_count;
-}
-
-#if 0
-/* EP spinlock must be held when calling. */
-static int
-endpoint_fifo_write(endpoint_t * ep, int index)
-{
-	int write_count = 0;
-	u8 *bufptr;
-	usbdev_pkt_t *pkt = ep->inlist.head;
-
-	if (!pkt)
-		return -EINVAL;
-
-	bufptr = &pkt->payload[index];
-	while ((au_readl(ep->reg->write_fifo_status) &
-		USBDEV_FSTAT_FCNT_MASK) < EP_FIFO_DEPTH) {
-		if (bufptr < pkt->payload + pkt->size) {
-			au_writel(*bufptr++, ep->reg->write_fifo);
-			write_count++;
-		} else {
-			break;
-		}
-	}
-
-	return write_count;
-}
-#endif
-
-/*
- * This routine is called to restart transmission of a packet.
- * The endpoint's TSIZE must be set to the new packet's size,
- * and DMA to the write FIFO needs to be restarted.
- * EP spinlock must be held when calling.
- */
-static void
-kickstart_send_packet(endpoint_t * ep)
-{
-	u32 cs;
-	usbdev_pkt_t *pkt = ep->inlist.head;
-
-	vdbg("%s: ep%d, pkt=%p", __FUNCTION__, ep->address, pkt);
-
-	if (!pkt) {
-		err("%s: head=NULL! list->count=%d", __FUNCTION__,
-		    ep->inlist.count);
-		return;
-	}
-
-	dma_cache_wback_inv((unsigned long)pkt->payload, pkt->size);
-
-	/*
-	 * make sure FIFO is empty
-	 */
-	flush_write_fifo(ep);
-
-	cs = au_readl(ep->reg->ctrl_stat) & USBDEV_CS_STALL;
-	cs |= (pkt->size << USBDEV_CS_TSIZE_BIT);
-	au_writel(cs, ep->reg->ctrl_stat);
-
-	if (get_dma_active_buffer(ep->indma) == 1) {
-		set_dma_count1(ep->indma, pkt->size);
-		set_dma_addr1(ep->indma, virt_to_phys(pkt->payload));
-		enable_dma_buffer1(ep->indma);	// reenable
-	} else {
-		set_dma_count0(ep->indma, pkt->size);
-		set_dma_addr0(ep->indma, virt_to_phys(pkt->payload));
-		enable_dma_buffer0(ep->indma);	// reenable
-	}
-	if (dma_halted(ep->indma))
-		start_dma(ep->indma);
-}
-
-
-/*
- * This routine is called when a packet in the inlist has been
- * completed. Frees the completed packet and starts sending the
- * next. EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-send_packet_complete(endpoint_t * ep)
-{
-	usbdev_pkt_t *pkt = unlink_head(&ep->inlist);
-
-	if (pkt) {
-		pkt->status =
-			(au_readl(ep->reg->ctrl_stat) & USBDEV_CS_NAK) ?
-			PKT_STATUS_NAK : PKT_STATUS_ACK;
-
-		vdbg("%s: ep%d, %s pkt=%p, list count=%d", __FUNCTION__,
-		     ep->address, (pkt->status & PKT_STATUS_NAK) ?
-		     "NAK" : "ACK", pkt, ep->inlist.count);
-	}
-
-	/*
-	 * The write fifo should already be drained if things are
-	 * working right, but flush it anyway just in case.
-	 */
-	flush_write_fifo(ep);
-
-	// begin transmitting next packet in the inlist
-	if (ep->inlist.count) {
-		kickstart_send_packet(ep);
-	}
-
-	return pkt;
-}
-
-/*
- * Add a new packet to the tail of the given ep's packet
- * inlist. The transmit complete interrupt frees packets from
- * the head of this list. EP spinlock must be held when calling.
- */
-static int
-send_packet(struct usb_dev* dev, usbdev_pkt_t *pkt, int async)
-{
-	pkt_list_t *list;
-	endpoint_t* ep;
-
-	if (!pkt || !(ep = epaddr_to_ep(dev, pkt->ep_addr)))
-		return -EINVAL;
-
-	if (!pkt->size)
-		return 0;
-
-	list = &ep->inlist;
-
-	if (!async && list->count) {
-		halt_dma(ep->indma);
-		flush_pkt_list(list);
-	}
-
-	link_tail(ep, list, pkt);
-
-	vdbg("%s: ep%d, pkt=%p, size=%d, list count=%d", __FUNCTION__,
-	     ep->address, pkt, pkt->size, list->count);
-
-	if (list->count == 1) {
-		/*
-		 * if the packet count is one, it means the list was empty,
-		 * and no more data will go out this ep until we kick-start
-		 * it again.
-		 */
-		kickstart_send_packet(ep);
-	}
-
-	return pkt->size;
-}
-
-/*
- * This routine is called to restart reception of a packet.
- * EP spinlock must be held when calling.
- */
-static void
-kickstart_receive_packet(endpoint_t * ep)
-{
-	usbdev_pkt_t *pkt;
-
-	// get and link a new packet for next reception
-	if (!(pkt = add_packet(ep, &ep->outlist, ep->max_pkt_size))) {
-		err("%s: could not alloc new packet", __FUNCTION__);
-		return;
-	}
-
-	if (get_dma_active_buffer(ep->outdma) == 1) {
-		clear_dma_done1(ep->outdma);
-		set_dma_count1(ep->outdma, ep->max_pkt_size);
-		set_dma_count0(ep->outdma, 0);
-		set_dma_addr1(ep->outdma, virt_to_phys(pkt->payload));
-		enable_dma_buffer1(ep->outdma);	// reenable
-	} else {
-		clear_dma_done0(ep->outdma);
-		set_dma_count0(ep->outdma, ep->max_pkt_size);
-		set_dma_count1(ep->outdma, 0);
-		set_dma_addr0(ep->outdma, virt_to_phys(pkt->payload));
-		enable_dma_buffer0(ep->outdma);	// reenable
-	}
-	if (dma_halted(ep->outdma))
-		start_dma(ep->outdma);
-}
-
-
-/*
- * This routine is called when a packet in the outlist has been
- * completed (received) and we need to prepare for a new packet
- * to be received. Halts DMA and computes the packet size from the
- * remaining DMA counter. Then prepares a new packet for reception
- * and restarts DMA. FIXME: what if another packet comes in
- * on top of the completed packet? Counter would be wrong.
- * EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-receive_packet_complete(endpoint_t * ep)
-{
-	usbdev_pkt_t *pkt = ep->outlist.tail;
-	u32 cs;
-
-	halt_dma(ep->outdma);
-
-	cs = au_readl(ep->reg->ctrl_stat);
-
-	if (!pkt)
-		return NULL;
-
-	pkt->size = ep->max_pkt_size - get_dma_residue(ep->outdma);
-	if (pkt->size)
-		dma_cache_inv((unsigned long)pkt->payload, pkt->size);
-	/*
-	 * need to pull out any remaining bytes in the FIFO.
-	 */
-	endpoint_fifo_read(ep);
-	/*
-	 * should be drained now, but flush anyway just in case.
-	 */
-	flush_read_fifo(ep);
-
-	pkt->status = (cs & USBDEV_CS_NAK) ? PKT_STATUS_NAK : PKT_STATUS_ACK;
-	if (ep->address == 0 && (cs & USBDEV_CS_SU))
-		pkt->status |= PKT_STATUS_SU;
-
-	vdbg("%s: ep%d, %s pkt=%p, size=%d", __FUNCTION__,
-	     ep->address, (pkt->status & PKT_STATUS_NAK) ?
-	     "NAK" : "ACK", pkt, pkt->size);
-
-	kickstart_receive_packet(ep);
-
-	return pkt;
-}
-
-
-/*
- ****************************************************************************
- * Here starts the standard device request handlers. They are
- * all called by do_setup() via a table of function pointers.
- ****************************************************************************
- */
-
-static ep0_stage_t
-do_get_status(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	switch (setup->bRequestType) {
-	case 0x80:	// Device
-		// FIXME: send device status
-		break;
-	case 0x81:	// Interface
-		// FIXME: send interface status
-		break;
-	case 0x82:	// End Point
-		// FIXME: send endpoint status
-		break;
-	default:
-		// Invalid Command
-		endpoint_stall(&dev->ep[0]); // Stall End Point 0
-		break;
-	}
-
-	return STATUS_STAGE;
-}
-
-static ep0_stage_t
-do_clear_feature(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	switch (setup->bRequestType) {
-	case 0x00:	// Device
-		if ((le16_to_cpu(setup->wValue) & 0xff) == 1)
-			dev->remote_wakeup_en = 0;
-	else
-			endpoint_stall(&dev->ep[0]);
-		break;
-	case 0x02:	// End Point
-		if ((le16_to_cpu(setup->wValue) & 0xff) == 0) {
-			endpoint_t *ep =
-				epaddr_to_ep(dev,
-					     le16_to_cpu(setup->wIndex) & 0xff);
-
-			endpoint_unstall(ep);
-			endpoint_reset_datatoggle(ep);
-		} else
-			endpoint_stall(&dev->ep[0]);
-		break;
-	}
-
-	return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_reserved(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	// Invalid request, stall End Point 0
-	endpoint_stall(&dev->ep[0]);
-	return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_set_feature(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	switch (setup->bRequestType) {
-	case 0x00:	// Device
-		if ((le16_to_cpu(setup->wValue) & 0xff) == 1)
-			dev->remote_wakeup_en = 1;
-		else
-			endpoint_stall(&dev->ep[0]);
-		break;
-	case 0x02:	// End Point
-		if ((le16_to_cpu(setup->wValue) & 0xff) == 0) {
-			endpoint_t *ep =
-				epaddr_to_ep(dev,
-					     le16_to_cpu(setup->wIndex) & 0xff);
-
-			endpoint_stall(ep);
-		} else
-			endpoint_stall(&dev->ep[0]);
-		break;
-	}
-
-	return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_set_address(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	int new_state = dev->state;
-	int new_addr = le16_to_cpu(setup->wValue);
-
-	dbg("%s: our address=%d", __FUNCTION__, new_addr);
-
-	if (new_addr > 127) {
-			// usb spec doesn't tell us what to do, so just go to
-			// default state
-		new_state = DEFAULT;
-		dev->address = 0;
-	} else if (dev->address != new_addr) {
-		dev->address = new_addr;
-		new_state = ADDRESS;
-	}
-
-	if (dev->state != new_state) {
-		dev->state = new_state;
-		/* inform function layer of usbdev state change */
-		dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data);
-	}
-
-	return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_get_descriptor(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	int strnum, desc_len = le16_to_cpu(setup->wLength);
-
-		switch (le16_to_cpu(setup->wValue) >> 8) {
-		case USB_DT_DEVICE:
-			// send device descriptor!
-		desc_len = desc_len > dev->dev_desc->bLength ?
-			dev->dev_desc->bLength : desc_len;
-			dbg("sending device desc, size=%d", desc_len);
-		send_packet(dev, alloc_packet(&dev->ep[0], desc_len,
-					      dev->dev_desc), 0);
-			break;
-		case USB_DT_CONFIG:
-			// If the config descr index in low-byte of
-			// setup->wValue	is valid, send config descr,
-			// otherwise stall ep0.
-			if ((le16_to_cpu(setup->wValue) & 0xff) == 0) {
-				// send config descriptor!
-				if (desc_len <= USB_DT_CONFIG_SIZE) {
-					dbg("sending partial config desc, size=%d",
-					     desc_len);
-				send_packet(dev,
-					    alloc_packet(&dev->ep[0],
-							 desc_len,
-							 dev->conf_desc),
-					    0);
-				} else {
-				int len = le16_to_cpu(dev->conf_desc->wTotalLength);
-				dbg("sending whole config desc,"
-				    " size=%d, our size=%d", desc_len, len);
-				desc_len = desc_len > len ? len : desc_len;
-				send_packet(dev,
-					    alloc_packet(&dev->ep[0],
-							 desc_len,
-							 dev->full_conf_desc),
-					    0);
-				}
-			} else
-			endpoint_stall(&dev->ep[0]);
-			break;
-		case USB_DT_STRING:
-			// If the string descr index in low-byte of setup->wValue
-			// is valid, send string descr, otherwise stall ep0.
-			strnum = le16_to_cpu(setup->wValue) & 0xff;
-			if (strnum >= 0 && strnum < 6) {
-				struct usb_string_descriptor *desc =
-				dev->str_desc[strnum];
-				desc_len = desc_len > desc->bLength ?
-					desc->bLength : desc_len;
-				dbg("sending string desc %d", strnum);
-			send_packet(dev,
-				    alloc_packet(&dev->ep[0], desc_len,
-						 desc), 0);
-			} else
-			endpoint_stall(&dev->ep[0]);
-			break;
-	default:
-		// Invalid request
-		err("invalid get desc=%d, stalled",
-			    le16_to_cpu(setup->wValue) >> 8);
-		endpoint_stall(&dev->ep[0]);	// Stall endpoint 0
-			break;
-		}
-
-	return STATUS_STAGE;
-}
-
-static ep0_stage_t
-do_set_descriptor(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	// TODO: implement
-	// there will be an OUT data stage (the descriptor to set)
-	return DATA_STAGE;
-}
-
-static ep0_stage_t
-do_get_configuration(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	// send dev->configuration
-	dbg("sending config");
-	send_packet(dev, alloc_packet(&dev->ep[0], 1, &dev->configuration),
-		    0);
-	return STATUS_STAGE;
-}
-
-static ep0_stage_t
-do_set_configuration(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	// set active config to low-byte of setup->wValue
-	dev->configuration = le16_to_cpu(setup->wValue) & 0xff;
-	dbg("set config, config=%d", dev->configuration);
-	if (!dev->configuration && dev->state > DEFAULT) {
-		dev->state = ADDRESS;
-		/* inform function layer of usbdev state change */
-		dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data);
-	} else if (dev->configuration == 1) {
-		dev->state = CONFIGURED;
-		/* inform function layer of usbdev state change */
-		dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data);
-	} else {
-		// FIXME: "respond with request error" - how?
-	}
-
-	return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_get_interface(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-		// interface must be zero.
-	if ((le16_to_cpu(setup->wIndex) & 0xff) || dev->state == ADDRESS) {
-			// FIXME: respond with "request error". how?
-	} else if (dev->state == CONFIGURED) {
-		// send dev->alternate_setting
-			dbg("sending alt setting");
-		send_packet(dev, alloc_packet(&dev->ep[0], 1,
-					      &dev->alternate_setting), 0);
-		}
-
-	return STATUS_STAGE;
-
-}
-
-static ep0_stage_t
-do_set_interface(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	if (dev->state == ADDRESS) {
-			// FIXME: respond with "request error". how?
-	} else if (dev->state == CONFIGURED) {
-		dev->interface = le16_to_cpu(setup->wIndex) & 0xff;
-		dev->alternate_setting =
-			    le16_to_cpu(setup->wValue) & 0xff;
-			// interface and alternate_setting must be zero
-		if (dev->interface || dev->alternate_setting) {
-				// FIXME: respond with "request error". how?
-			}
-		}
-
-	return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_synch_frame(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	// TODO
-	return SETUP_STAGE;
-}
-
-typedef ep0_stage_t (*req_method_t)(struct usb_dev* dev,
-				    struct usb_ctrlrequest* setup);
-
-
-/* Table of the standard device request handlers */
-static const req_method_t req_method[] = {
-	do_get_status,
-	do_clear_feature,
-	do_reserved,
-	do_set_feature,
-	do_reserved,
-	do_set_address,
-	do_get_descriptor,
-	do_set_descriptor,
-	do_get_configuration,
-	do_set_configuration,
-	do_get_interface,
-	do_set_interface,
-	do_synch_frame
-};
-
-
-// SETUP packet request dispatcher
-static void
-do_setup (struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-	req_method_t m;
-
-	dbg("%s: req %d %s", __FUNCTION__, setup->bRequestType,
-	    get_std_req_name(setup->bRequestType));
-
-	if ((setup->bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD ||
-	    (setup->bRequestType & USB_RECIP_MASK) != USB_RECIP_DEVICE) {
-		err("%s: invalid requesttype 0x%02x", __FUNCTION__,
-		    setup->bRequestType);
-		return;
-		}
-
-	if ((setup->bRequestType & 0x80) == USB_DIR_OUT && setup->wLength)
-		dbg("%s: OUT phase! length=%d", __FUNCTION__, setup->wLength);
-
-	if (setup->bRequestType < sizeof(req_method)/sizeof(req_method_t))
-		m = req_method[setup->bRequestType];
-			else
-		m = do_reserved;
-
-	dev->ep0_stage = (*m)(dev, setup);
-}
-
-/*
- * A SETUP, DATA0, or DATA1 packet has been received
- * on the default control endpoint's fifo.
- */
-static void
-process_ep0_receive (struct usb_dev* dev)
-{
-	endpoint_t *ep0 = &dev->ep[0];
-	usbdev_pkt_t *pkt;
-
-	spin_lock(&ep0->lock);
-
-		// complete packet and prepare a new packet
-	pkt = receive_packet_complete(ep0);
-	if (!pkt) {
-		// FIXME: should  put a warn/err here.
-		spin_unlock(&ep0->lock);
-			return;
-		}
-
-	// unlink immediately from endpoint.
-	unlink_head(&ep0->outlist);
-
-	// override current stage if h/w says it's a setup packet
-	if (pkt->status & PKT_STATUS_SU)
-		dev->ep0_stage = SETUP_STAGE;
-
-	switch (dev->ep0_stage) {
-	case SETUP_STAGE:
-		vdbg("SU bit is %s in setup stage",
-		     (pkt->status & PKT_STATUS_SU) ? "set" : "not set");
-
-			if (pkt->size == sizeof(struct usb_ctrlrequest)) {
-#ifdef VDEBUG
-			if (pkt->status & PKT_STATUS_ACK)
-				vdbg("received SETUP");
-				else
-				vdbg("received NAK SETUP");
-#endif
-			do_setup(dev, (struct usb_ctrlrequest*)pkt->payload);
-		} else
-			err("%s: wrong size SETUP received", __FUNCTION__);
-		break;
-	case DATA_STAGE:
-		/*
-		 * this setup has an OUT data stage. Of the standard
-		 * device requests, only set_descriptor has this stage,
-		 * so this packet is that descriptor. TODO: drop it for
-		 * now, set_descriptor not implemented.
-		 *
-		 * Need to place a byte in the write FIFO here, to prepare
-		 * to send a zero-length DATA ack packet to the host in the
-		 * STATUS stage.
-		 */
-		au_writel(0, ep0->reg->write_fifo);
-		dbg("received OUT stage DATAx on EP0, size=%d", pkt->size);
-		dev->ep0_stage = SETUP_STAGE;
-		break;
-	case STATUS_STAGE:
-		// this setup had an IN data stage, and host is ACK'ing
-		// the packet we sent during that stage.
-		if (pkt->size != 0)
-			warn("received non-zero ACK on EP0??");
-#ifdef VDEBUG
-		else
-			vdbg("received ACK on EP0");
-#endif
-		dev->ep0_stage = SETUP_STAGE;
-		break;
-	}
-
-	spin_unlock(&ep0->lock);
-	// we're done processing the packet, free it
-	kfree(pkt);
-}
-
-
-/*
- * A DATA0/1 packet has been received on one of the OUT endpoints (4 or 5)
- */
-static void
-process_ep_receive (struct usb_dev* dev, endpoint_t *ep)
-{
-	usbdev_pkt_t *pkt;
-
-		spin_lock(&ep->lock);
-	pkt = receive_packet_complete(ep);
-		spin_unlock(&ep->lock);
-
-	dev->func_cb(CB_PKT_COMPLETE, (unsigned long)pkt, dev->cb_data);
-}
-
-
-
-/* This ISR handles the receive complete and suspend events */
-static void req_sus_intr (int irq, void *dev_id)
-{
-	struct usb_dev *dev = (struct usb_dev *) dev_id;
-	u32 status;
-
-	status = au_readl(USBD_INTSTAT);
-	au_writel(status, USBD_INTSTAT);	// ack'em
-
-	if (status & (1<<0))
-		process_ep0_receive(dev);
-	if (status & (1<<4))
-		process_ep_receive(dev, &dev->ep[4]);
-	if (status & (1<<5))
-		process_ep_receive(dev, &dev->ep[5]);
-}
-
-
-/* This ISR handles the DMA done events on EP0 */
-static void dma_done_ep0_intr(int irq, void *dev_id)
-{
-	struct usb_dev *dev = (struct usb_dev *) dev_id;
-	usbdev_pkt_t* pkt;
-	endpoint_t *ep0 = &dev->ep[0];
-	u32 cs0, buff_done;
-
-	spin_lock(&ep0->lock);
-	cs0 = au_readl(ep0->reg->ctrl_stat);
-
-	// first check packet transmit done
-	if ((buff_done = get_dma_buffer_done(ep0->indma)) != 0) {
-		// transmitted a DATAx packet during DATA stage
-		// on control endpoint 0
-		// clear DMA done bit
-		if (buff_done & DMA_D0)
-			clear_dma_done0(ep0->indma);
-		if (buff_done & DMA_D1)
-			clear_dma_done1(ep0->indma);
-
-		pkt = send_packet_complete(ep0);
-		kfree(pkt);
-	}
-
-	/*
-	 * Now check packet receive done. Shouldn't get these,
-	 * the receive packet complete intr should happen
-	 * before the DMA done intr occurs.
-	 */
-	if ((buff_done = get_dma_buffer_done(ep0->outdma)) != 0) {
-		// clear DMA done bit
-		if (buff_done & DMA_D0)
-			clear_dma_done0(ep0->outdma);
-		if (buff_done & DMA_D1)
-			clear_dma_done1(ep0->outdma);
-
-		//process_ep0_receive(dev);
-	}
-
-	spin_unlock(&ep0->lock);
-}
-
-/* This ISR handles the DMA done events on endpoints 2,3,4,5 */
-static void dma_done_ep_intr(int irq, void *dev_id)
-{
-	struct usb_dev *dev = (struct usb_dev *) dev_id;
-	int i;
-
-	for (i = 2; i < 6; i++) {
-	u32 buff_done;
-		usbdev_pkt_t* pkt;
-		endpoint_t *ep = &dev->ep[i];
-
-		if (!ep->active) continue;
-
-	spin_lock(&ep->lock);
-
-		if (ep->direction == USB_DIR_IN) {
-			buff_done = get_dma_buffer_done(ep->indma);
-			if (buff_done != 0) {
-				// transmitted a DATAx pkt on the IN ep
-		// clear DMA done bit
-		if (buff_done & DMA_D0)
-			clear_dma_done0(ep->indma);
-		if (buff_done & DMA_D1)
-			clear_dma_done1(ep->indma);
-
-				pkt = send_packet_complete(ep);
-
-				spin_unlock(&ep->lock);
-				dev->func_cb(CB_PKT_COMPLETE,
-					     (unsigned long)pkt,
-					     dev->cb_data);
-				spin_lock(&ep->lock);
-			}
-		} else {
-	/*
-			 * Check packet receive done (OUT ep). Shouldn't get
-			 * these, the rx packet complete intr should happen
-	 * before the DMA done intr occurs.
-	 */
-			buff_done = get_dma_buffer_done(ep->outdma);
-			if (buff_done != 0) {
-				// received a DATAx pkt on the OUT ep
-		// clear DMA done bit
-		if (buff_done & DMA_D0)
-			clear_dma_done0(ep->outdma);
-		if (buff_done & DMA_D1)
-			clear_dma_done1(ep->outdma);
-
-				//process_ep_receive(dev, ep);
-	}
-	}
-
-		spin_unlock(&ep->lock);
-	}
-}
-
-
-/***************************************************************************
- * Here begins the external interface functions
- ***************************************************************************
- */
-
-/*
- * allocate a new packet
- */
-int
-usbdev_alloc_packet(int ep_addr, int data_size, usbdev_pkt_t** pkt)
-{
-	endpoint_t * ep = epaddr_to_ep(&usbdev, ep_addr);
-	usbdev_pkt_t* lpkt = NULL;
-
-	if (!ep || !ep->active || ep->address < 2)
-		return -ENODEV;
-	if (data_size > ep->max_pkt_size)
-		return -EINVAL;
-
-	lpkt = *pkt = alloc_packet(ep, data_size, NULL);
-	if (!lpkt)
-		return -ENOMEM;
-	return 0;
-}
-
-
-/*
- * packet send
- */
-int
-usbdev_send_packet(int ep_addr, usbdev_pkt_t * pkt)
-{
-	unsigned long flags;
-	int count;
-	endpoint_t * ep;
-
-	if (!pkt || !(ep = epaddr_to_ep(&usbdev, pkt->ep_addr)) ||
-	    !ep->active || ep->address < 2)
-		return -ENODEV;
-	if (ep->direction != USB_DIR_IN)
-		return -EINVAL;
-
-	spin_lock_irqsave(&ep->lock, flags);
-	count = send_packet(&usbdev, pkt, 1);
-	spin_unlock_irqrestore(&ep->lock, flags);
-
-	return count;
-}
-
-/*
- * packet receive
- */
-int
-usbdev_receive_packet(int ep_addr, usbdev_pkt_t** pkt)
-{
-	unsigned long flags;
-	usbdev_pkt_t* lpkt = NULL;
-	endpoint_t *ep = epaddr_to_ep(&usbdev, ep_addr);
-
-	if (!ep || !ep->active || ep->address < 2)
-		return -ENODEV;
-	if (ep->direction != USB_DIR_OUT)
-		return -EINVAL;
-
-	spin_lock_irqsave(&ep->lock, flags);
-	if (ep->outlist.count > 1)
-		lpkt = unlink_head(&ep->outlist);
-	spin_unlock_irqrestore(&ep->lock, flags);
-
-	if (!lpkt) {
-		/* no packet available */
-		*pkt = NULL;
-		return -ENODATA;
-	}
-
-	*pkt = lpkt;
-
-	return lpkt->size;
-}
-
-
-/*
- * return total queued byte count on the endpoint.
- */
-int
-usbdev_get_byte_count(int ep_addr)
-{
-        unsigned long flags;
-        pkt_list_t *list;
-        usbdev_pkt_t *scan;
-        int count = 0;
-	endpoint_t * ep = epaddr_to_ep(&usbdev, ep_addr);
-
-	if (!ep || !ep->active || ep->address < 2)
-		return -ENODEV;
-
-	if (ep->direction == USB_DIR_IN) {
-		list = &ep->inlist;
-
-		spin_lock_irqsave(&ep->lock, flags);
-		for (scan = list->head; scan; scan = scan->next)
-			count += scan->size;
-		spin_unlock_irqrestore(&ep->lock, flags);
-	} else {
-		list = &ep->outlist;
-
-		spin_lock_irqsave(&ep->lock, flags);
-		if (list->count > 1) {
-			for (scan = list->head; scan != list->tail;
-			     scan = scan->next)
-				count += scan->size;
-	}
-		spin_unlock_irqrestore(&ep->lock, flags);
-	}
-
-	return count;
-}
-
-
-void
-usbdev_exit(void)
-{
-	endpoint_t *ep;
-	int i;
-
-	au_writel(0, USBD_INTEN);	// disable usb dev ints
-	au_writel(0, USBD_ENABLE);	// disable usb dev
-
-	free_irq(AU1000_USB_DEV_REQ_INT, &usbdev);
-	free_irq(AU1000_USB_DEV_SUS_INT, &usbdev);
-
-	// free all control endpoint resources
-	ep = &usbdev.ep[0];
-	free_au1000_dma(ep->indma);
-	free_au1000_dma(ep->outdma);
-	endpoint_flush(ep);
-
-	// free ep resources
-	for (i = 2; i < 6; i++) {
-		ep = &usbdev.ep[i];
-		if (!ep->active) continue;
-
-		if (ep->direction == USB_DIR_IN) {
-			free_au1000_dma(ep->indma);
-		} else {
-		free_au1000_dma(ep->outdma);
-		}
-		endpoint_flush(ep);
-	}
-
-	kfree(usbdev.full_conf_desc);
-}
-
-int
-usbdev_init(struct usb_device_descriptor* dev_desc,
-	    struct usb_config_descriptor* config_desc,
-	    struct usb_interface_descriptor* if_desc,
-	    struct usb_endpoint_descriptor* ep_desc,
-	    struct usb_string_descriptor* str_desc[],
-	    void (*cb)(usbdev_cb_type_t, unsigned long, void *),
-	    void* cb_data)
-{
-	endpoint_t *ep0;
-	int i, ret=0;
-	u8* fcd;
-
-	if (dev_desc->bNumConfigurations > 1 ||
-	    config_desc->bNumInterfaces > 1 ||
-	    if_desc->bNumEndpoints > 4) {
-		err("Only one config, one i/f, and no more "
-		    "than 4 ep's allowed");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (!cb) {
-		err("Function-layer callback required");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (dev_desc->bMaxPacketSize0 != USBDEV_EP0_MAX_PACKET_SIZE) {
-		warn("EP0 Max Packet size must be %d",
-		     USBDEV_EP0_MAX_PACKET_SIZE);
-		dev_desc->bMaxPacketSize0 = USBDEV_EP0_MAX_PACKET_SIZE;
-	}
-
-	memset(&usbdev, 0, sizeof(struct usb_dev));
-
-	usbdev.state = DEFAULT;
-	usbdev.dev_desc = dev_desc;
-	usbdev.if_desc = if_desc;
-	usbdev.conf_desc = config_desc;
-	for (i=0; i<6; i++)
-		usbdev.str_desc[i] = str_desc[i];
-	usbdev.func_cb = cb;
-	usbdev.cb_data = cb_data;
-
-	/* Initialize default control endpoint */
-	ep0 = &usbdev.ep[0];
-	ep0->active = 1;
-	ep0->type = CONTROL_EP;
-	ep0->max_pkt_size = USBDEV_EP0_MAX_PACKET_SIZE;
-	spin_lock_init(&ep0->lock);
-	ep0->desc = NULL;	// ep0 has no descriptor
-	ep0->address = 0;
-	ep0->direction = 0;
-	ep0->reg = &ep_reg[0];
-
-	/* Initialize the other requested endpoints */
-	for (i = 0; i < if_desc->bNumEndpoints; i++) {
-		struct usb_endpoint_descriptor* epd = &ep_desc[i];
-	endpoint_t *ep;
-
-		if ((epd->bEndpointAddress & 0x80) == USB_DIR_IN) {
-			ep = &usbdev.ep[2];
-			ep->address = 2;
-			if (ep->active) {
-				ep = &usbdev.ep[3];
-				ep->address = 3;
-				if (ep->active) {
-					err("too many IN ep's requested");
-					ret = -ENODEV;
-					goto out;
-	}
-	}
-		} else {
-			ep = &usbdev.ep[4];
-			ep->address = 4;
-			if (ep->active) {
-				ep = &usbdev.ep[5];
-				ep->address = 5;
-				if (ep->active) {
-					err("too many OUT ep's requested");
-					ret = -ENODEV;
-					goto out;
-	}
-	}
-		}
-
-		ep->active = 1;
-		epd->bEndpointAddress &= ~0x0f;
-		epd->bEndpointAddress |= (u8)ep->address;
-		ep->direction = epd->bEndpointAddress & 0x80;
-		ep->type = epd->bmAttributes & 0x03;
-		ep->max_pkt_size = le16_to_cpu(epd->wMaxPacketSize);
-		spin_lock_init(&ep->lock);
-		ep->desc = epd;
-		ep->reg = &ep_reg[ep->address];
-		}
-
-	/*
-	 * initialize the full config descriptor
-	 */
-	usbdev.full_conf_desc = fcd = kmalloc(le16_to_cpu(config_desc->wTotalLength),
-					      ALLOC_FLAGS);
-	if (!fcd) {
-		err("failed to alloc full config descriptor");
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	memcpy(fcd, config_desc, USB_DT_CONFIG_SIZE);
-	fcd += USB_DT_CONFIG_SIZE;
-	memcpy(fcd, if_desc, USB_DT_INTERFACE_SIZE);
-	fcd += USB_DT_INTERFACE_SIZE;
-	for (i = 0; i < if_desc->bNumEndpoints; i++) {
-		memcpy(fcd, &ep_desc[i], USB_DT_ENDPOINT_SIZE);
-		fcd += USB_DT_ENDPOINT_SIZE;
-	}
-
-	/* Now we're ready to enable the controller */
-	au_writel(0x0002, USBD_ENABLE);
-	udelay(100);
-	au_writel(0x0003, USBD_ENABLE);
-	udelay(100);
-
-	/* build and send config table based on ep descriptors */
-	for (i = 0; i < 6; i++) {
-		endpoint_t *ep;
-		if (i == 1)
-			continue; // skip dummy ep
-		ep = &usbdev.ep[i];
-		if (ep->active) {
-			au_writel((ep->address << 4) | 0x04, USBD_CONFIG);
-			au_writel(((ep->max_pkt_size & 0x380) >> 7) |
-				  (ep->direction >> 4) | (ep->type << 4),
-				  USBD_CONFIG);
-			au_writel((ep->max_pkt_size & 0x7f) << 1, USBD_CONFIG);
-			au_writel(0x00, USBD_CONFIG);
-			au_writel(ep->address, USBD_CONFIG);
-		} else {
-			u8 dir = (i==2 || i==3) ? DIR_IN : DIR_OUT;
-			au_writel((i << 4) | 0x04, USBD_CONFIG);
-			au_writel(((16 & 0x380) >> 7) | dir |
-				  (BULK_EP << 4), USBD_CONFIG);
-			au_writel((16 & 0x7f) << 1, USBD_CONFIG);
-			au_writel(0x00, USBD_CONFIG);
-			au_writel(i, USBD_CONFIG);
-		}
-	}
-
-	/*
-	 * Enable Receive FIFO Complete interrupts only. Transmit
-	 * complete is being handled by the DMA done interrupts.
-	 */
-	au_writel(0x31, USBD_INTEN);
-
-	/*
-	 * Controller is now enabled, request DMA and IRQ
-	 * resources.
-	 */
-
-	/* request the USB device transfer complete interrupt */
-	if (request_irq(AU1000_USB_DEV_REQ_INT, req_sus_intr, IRQF_DISABLED,
-			"USBdev req", &usbdev)) {
-		err("Can't get device request intr");
-		ret = -ENXIO;
-		goto out;
-	}
-	/* request the USB device suspend interrupt */
-	if (request_irq(AU1000_USB_DEV_SUS_INT, req_sus_intr, IRQF_DISABLED,
-			"USBdev sus", &usbdev)) {
-		err("Can't get device suspend intr");
-		ret = -ENXIO;
-		goto out;
-	}
-
-	/* Request EP0 DMA and IRQ */
-	if ((ep0->indma = request_au1000_dma(ep_dma_id[0].id,
-					     ep_dma_id[0].str,
-					     dma_done_ep0_intr,
-					     IRQF_DISABLED,
-					     &usbdev)) < 0) {
-		err("Can't get %s DMA", ep_dma_id[0].str);
-		ret = -ENXIO;
-		goto out;
-	}
-	if ((ep0->outdma = request_au1000_dma(ep_dma_id[1].id,
-					      ep_dma_id[1].str,
-					      NULL, 0, NULL)) < 0) {
-		err("Can't get %s DMA", ep_dma_id[1].str);
-		ret = -ENXIO;
-		goto out;
-	}
-
-	// Flush the ep0 buffers and FIFOs
-	endpoint_flush(ep0);
-	// start packet reception on ep0
-	kickstart_receive_packet(ep0);
-
-	/* Request DMA and IRQ for the other endpoints */
-	for (i = 2; i < 6; i++) {
-		endpoint_t *ep = &usbdev.ep[i];
-		if (!ep->active)
-			continue;
-
-		// Flush the endpoint buffers and FIFOs
-		endpoint_flush(ep);
-
-		if (ep->direction == USB_DIR_IN) {
-			ep->indma =
-				request_au1000_dma(ep_dma_id[ep->address].id,
-						   ep_dma_id[ep->address].str,
-						   dma_done_ep_intr,
-						   IRQF_DISABLED,
-						   &usbdev);
-			if (ep->indma < 0) {
-				err("Can't get %s DMA",
-				    ep_dma_id[ep->address].str);
-				ret = -ENXIO;
-				goto out;
-			}
-		} else {
-			ep->outdma =
-				request_au1000_dma(ep_dma_id[ep->address].id,
-						   ep_dma_id[ep->address].str,
-						   NULL, 0, NULL);
-			if (ep->outdma < 0) {
-				err("Can't get %s DMA",
-				    ep_dma_id[ep->address].str);
-				ret = -ENXIO;
-				goto out;
-			}
-
-			// start packet reception on OUT endpoint
-			kickstart_receive_packet(ep);
-		}
-	}
-
- out:
-	if (ret)
-		usbdev_exit();
-	return ret;
-}
-
-EXPORT_SYMBOL(usbdev_init);
-EXPORT_SYMBOL(usbdev_exit);
-EXPORT_SYMBOL(usbdev_alloc_packet);
-EXPORT_SYMBOL(usbdev_receive_packet);
-EXPORT_SYMBOL(usbdev_send_packet);
-EXPORT_SYMBOL(usbdev_get_byte_count);
diff --git a/arch/mips/au1000/db1x00/board_setup.c b/arch/mips/au1000/db1x00/board_setup.c
index 7a79293f8527..8b08edb977be 100644
--- a/arch/mips/au1000/db1x00/board_setup.c
+++ b/arch/mips/au1000/db1x00/board_setup.c
@@ -58,11 +58,6 @@ void __init board_setup(void)
 
 	pin_func = 0;
 	/* not valid for 1550 */
-#ifdef CONFIG_AU1X00_USB_DEVICE
-	// 2nd USB port is USB device
-	pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
-	au_writel(pin_func, SYS_PINFUNC);
-#endif
 
 #if defined(CONFIG_IRDA) && (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
 	/* set IRFIRSEL instead of GPIO15 */
diff --git a/arch/mips/au1000/mtx-1/board_setup.c b/arch/mips/au1000/mtx-1/board_setup.c
index e917e54fc683..13f9bf5f91a6 100644
--- a/arch/mips/au1000/mtx-1/board_setup.c
+++ b/arch/mips/au1000/mtx-1/board_setup.c
@@ -51,15 +51,11 @@ void board_reset (void)
 
 void __init board_setup(void)
 {
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
-#ifdef CONFIG_AU1X00_USB_DEVICE
-	// 2nd USB port is USB device
-	au_writel(au_readl(SYS_PINFUNC) & (u32)(~0x8000), SYS_PINFUNC);
-#endif
+#ifdef CONFIG_USB_OHCI
 	// enable USB power switch
 	au_writel( au_readl(GPIO2_DIR) | 0x10, GPIO2_DIR );
 	au_writel( 0x100000, GPIO2_OUTPUT );
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
 #ifdef CONFIG_PCI
 #if defined(__MIPSEB__)
diff --git a/arch/mips/au1000/pb1000/board_setup.c b/arch/mips/au1000/pb1000/board_setup.c
index 1cf18e16ab54..824cfafaff92 100644
--- a/arch/mips/au1000/pb1000/board_setup.c
+++ b/arch/mips/au1000/pb1000/board_setup.c
@@ -54,7 +54,7 @@ void __init board_setup(void)
 	au_writel(0, SYS_PINSTATERD);
 	udelay(100);
 
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
 	/* zero and disable FREQ2 */
 	sys_freqctrl = au_readl(SYS_FREQCTRL0);
 	sys_freqctrl &= ~0xFFF00000;
@@ -105,22 +105,18 @@ void __init board_setup(void)
 #ifdef CONFIG_USB_OHCI
 	sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
 #endif
-#ifdef CONFIG_AU1X00_USB_DEVICE
-	sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
-#endif
 	au_writel(sys_clksrc, SYS_CLKSRC);
 
 	// configure pins GPIO[14:9] as GPIO
 	pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8080);
 
-#ifndef CONFIG_AU1X00_USB_DEVICE
 	// 2nd USB port is USB host
 	pin_func |= 0x8000;
-#endif
+
 	au_writel(pin_func, SYS_PINFUNC);
 	au_writel(0x2800, SYS_TRIOUTCLR);
 	au_writel(0x0030, SYS_OUTPUTCLR);
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
 	// make gpio 15 an input (for interrupt line)
 	pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x100);
diff --git a/arch/mips/au1000/pb1100/board_setup.c b/arch/mips/au1000/pb1100/board_setup.c
index db27b9331ff3..2d1533f116c0 100644
--- a/arch/mips/au1000/pb1100/board_setup.c
+++ b/arch/mips/au1000/pb1100/board_setup.c
@@ -55,7 +55,7 @@ void __init board_setup(void)
 	au_writel(0, SYS_PININPUTEN);
 	udelay(100);
 
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
 	// configure pins GPIO[14:9] as GPIO
 	pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x80);
 
@@ -92,12 +92,10 @@ void __init board_setup(void)
 
 	// get USB Functionality pin state (device vs host drive pins)
 	pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
-#ifndef CONFIG_AU1X00_USB_DEVICE
 	// 2nd USB port is USB host
 	pin_func |= 0x8000;
-#endif
 	au_writel(pin_func, SYS_PINFUNC);
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
 	/* Enable sys bus clock divider when IDLE state or no bus activity. */
 	au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
diff --git a/arch/mips/au1000/pb1500/board_setup.c b/arch/mips/au1000/pb1500/board_setup.c
index 1a9a293de6ab..0ffdb4fd575b 100644
--- a/arch/mips/au1000/pb1500/board_setup.c
+++ b/arch/mips/au1000/pb1500/board_setup.c
@@ -56,7 +56,7 @@ void __init board_setup(void)
 	au_writel(0, SYS_PINSTATERD);
 	udelay(100);
 
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
 
 	/* GPIO201 is input for PCMCIA card detect */
 	/* GPIO203 is input for PCMCIA interrupt request */
@@ -88,19 +88,14 @@ void __init board_setup(void)
 #ifdef CONFIG_USB_OHCI
 	sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
 #endif
-#ifdef CONFIG_AU1X00_USB_DEVICE
-	sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
-#endif
 	au_writel(sys_clksrc, SYS_CLKSRC);
 
 
 	pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
-#ifndef CONFIG_AU1X00_USB_DEVICE
 	// 2nd USB port is USB host
 	pin_func |= 0x8000;
-#endif
 	au_writel(pin_func, SYS_PINFUNC);
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
 
 
diff --git a/arch/mips/configs/pb1100_defconfig b/arch/mips/configs/pb1100_defconfig
index 741f8258075c..9e672f63a0aa 100644
--- a/arch/mips/configs/pb1100_defconfig
+++ b/arch/mips/configs/pb1100_defconfig
@@ -76,7 +76,6 @@ CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
 CONFIG_SOC_AU1100=y
 CONFIG_SOC_AU1X00=y
 CONFIG_SWAP_IO_SPACE=y
-# CONFIG_AU1X00_USB_DEVICE is not set
 CONFIG_MIPS_L1_CACHE_SHIFT=5
 
 #
diff --git a/arch/mips/configs/pb1500_defconfig b/arch/mips/configs/pb1500_defconfig
index 8576340714da..d0c0f4af1bff 100644
--- a/arch/mips/configs/pb1500_defconfig
+++ b/arch/mips/configs/pb1500_defconfig
@@ -75,7 +75,6 @@ CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
 CONFIG_SOC_AU1500=y
 CONFIG_SOC_AU1X00=y
-# CONFIG_AU1X00_USB_DEVICE is not set
 CONFIG_MIPS_L1_CACHE_SHIFT=5
 
 #
diff --git a/include/asm-mips/mach-au1x00/au1000_usbdev.h b/include/asm-mips/mach-au1x00/au1000_usbdev.h
deleted file mode 100644
index 05bc74bed0b1..000000000000
--- a/include/asm-mips/mach-au1x00/au1000_usbdev.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * BRIEF MODULE DESCRIPTION
- *	Au1000 USB Device-Side Driver
- *
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- *		stevel@mvista.com or source@mvista.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;  either version 2 of the	License, or (at your
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
- *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
- *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  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.
- */
-
-#define USBDEV_REV 0x0110 // BCD
-#define USBDEV_EP0_MAX_PACKET_SIZE 64
-
-typedef enum {
-	ATTACHED = 0,
-	POWERED,
-	DEFAULT,
-	ADDRESS,
-	CONFIGURED
-} usbdev_state_t;
-
-typedef enum {
-	CB_NEW_STATE = 0,
-	CB_PKT_COMPLETE
-} usbdev_cb_type_t;
-
-
-typedef struct usbdev_pkt {
-	int                ep_addr;    // ep addr this packet routed to
-	int                size;       // size of payload in bytes
-	unsigned           status;     // packet status
-	struct usbdev_pkt* next;       // function layer can't touch this
-	u8                 payload[0]; // the payload
-} usbdev_pkt_t;
-
-#define PKT_STATUS_ACK  (1<<0)
-#define PKT_STATUS_NAK  (1<<1)
-#define PKT_STATUS_SU   (1<<2)
-
-extern int usbdev_init(struct usb_device_descriptor* dev_desc,
-		       struct usb_config_descriptor* config_desc,
-		       struct usb_interface_descriptor* if_desc,
-		       struct usb_endpoint_descriptor* ep_desc,
-		       struct usb_string_descriptor* str_desc[],
-		       void (*cb)(usbdev_cb_type_t, unsigned long, void *),
-		       void* cb_data);
-
-extern void usbdev_exit(void);
-
-extern int usbdev_alloc_packet  (int ep_addr, int data_size,
-				 usbdev_pkt_t** pkt);
-extern int usbdev_send_packet   (int ep_addr, usbdev_pkt_t* pkt);
-extern int usbdev_receive_packet(int ep_addr, usbdev_pkt_t** pkt);
-extern int usbdev_get_byte_count(int ep_addr);