Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/mips/au1000/common/usbdev.c b/arch/mips/au1000/common/usbdev.c
new file mode 100644
index 0000000..447a9a4
--- /dev/null
+++ b/arch/mips/au1000/common/usbdev.c
@@ -0,0 +1,1557 @@
+/*
+ * 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(__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(__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 pt_regs *regs)
+{
+ 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 pt_regs *regs)
+{
+ 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);
+ if (pkt)
+ 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 pt_regs *regs)
+{
+ 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);
+ }
+
+ if (usbdev.full_conf_desc)
+ 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, SA_INTERRUPT,
+ "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, SA_INTERRUPT,
+ "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,
+ SA_INTERRUPT,
+ &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,
+ SA_INTERRUPT,
+ &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);