+++ /dev/null
-/*
- * 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);
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff