2 * Copyright (c) 2010 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #define ATH9K_FW_USB_DEV(devid, fw) \
20 { USB_DEVICE(0x0cf3, devid), .driver_info = (unsigned long) fw }
22 static struct usb_device_id ath9k_hif_usb_ids[] = {
23 ATH9K_FW_USB_DEV(0x9271, "ar9271.fw"),
24 ATH9K_FW_USB_DEV(0x1006, "ar9271.fw"),
28 MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
30 static int __hif_usb_tx(struct hif_device_usb *hif_dev);
32 static void hif_usb_regout_cb(struct urb *urb)
34 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
36 switch (urb->status) {
49 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
60 static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
67 urb = usb_alloc_urb(0, GFP_KERNEL);
71 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
78 cmd->hif_dev = hif_dev;
80 usb_fill_int_urb(urb, hif_dev->udev,
81 usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
83 hif_usb_regout_cb, cmd, 1);
85 usb_anchor_urb(urb, &hif_dev->regout_submitted);
86 ret = usb_submit_urb(urb, GFP_KERNEL);
88 usb_unanchor_urb(urb);
96 static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
97 struct sk_buff_head *list)
101 while ((skb = __skb_dequeue(list)) != NULL) {
102 dev_kfree_skb_any(skb);
103 TX_STAT_INC(skb_dropped);
107 static void hif_usb_tx_cb(struct urb *urb)
109 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
110 struct hif_device_usb *hif_dev = tx_buf->hif_dev;
113 if (!hif_dev || !tx_buf)
116 switch (urb->status) {
124 * The URB has been killed, free the SKBs
127 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
133 /* Check if TX has been stopped */
134 spin_lock(&hif_dev->tx.tx_lock);
135 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
136 spin_unlock(&hif_dev->tx.tx_lock);
137 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
140 spin_unlock(&hif_dev->tx.tx_lock);
142 /* Complete the queued SKBs. */
143 while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
144 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
146 TX_STAT_INC(skb_completed);
150 /* Re-initialize the SKB queue */
151 tx_buf->len = tx_buf->offset = 0;
152 __skb_queue_head_init(&tx_buf->skb_queue);
154 /* Add this TX buffer to the free list */
155 spin_lock(&hif_dev->tx.tx_lock);
156 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
157 hif_dev->tx.tx_buf_cnt++;
158 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
159 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
160 TX_STAT_INC(buf_completed);
161 spin_unlock(&hif_dev->tx.tx_lock);
164 /* TX lock has to be taken */
165 static int __hif_usb_tx(struct hif_device_usb *hif_dev)
167 struct tx_buf *tx_buf = NULL;
168 struct sk_buff *nskb = NULL;
170 u16 *hdr, tx_skb_cnt = 0;
173 if (hif_dev->tx.tx_skb_cnt == 0)
176 /* Check if a free TX buffer is available */
177 if (list_empty(&hif_dev->tx.tx_buf))
180 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
181 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
182 hif_dev->tx.tx_buf_cnt--;
184 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
186 for (i = 0; i < tx_skb_cnt; i++) {
187 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
189 /* Should never be NULL */
192 hif_dev->tx.tx_skb_cnt--;
195 buf += tx_buf->offset;
198 *hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
200 memcpy(buf, nskb->data, nskb->len);
201 tx_buf->len = nskb->len + 4;
203 if (i < (tx_skb_cnt - 1))
204 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
206 if (i == (tx_skb_cnt - 1))
207 tx_buf->len += tx_buf->offset;
209 __skb_queue_tail(&tx_buf->skb_queue, nskb);
210 TX_STAT_INC(skb_queued);
213 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
214 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
215 tx_buf->buf, tx_buf->len,
216 hif_usb_tx_cb, tx_buf);
218 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
220 tx_buf->len = tx_buf->offset = 0;
221 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
222 __skb_queue_head_init(&tx_buf->skb_queue);
223 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
224 hif_dev->tx.tx_buf_cnt++;
228 TX_STAT_INC(buf_queued);
233 static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
234 struct ath9k_htc_tx_ctl *tx_ctl)
238 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
240 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
241 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
245 /* Check if the max queue count has been reached */
246 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
247 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
251 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
252 hif_dev->tx.tx_skb_cnt++;
254 /* Send normal frames immediately */
255 if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
256 __hif_usb_tx(hif_dev);
258 /* Check if AMPDUs have to be sent immediately */
259 if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
260 (hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
261 (hif_dev->tx.tx_skb_cnt < 2)) {
262 __hif_usb_tx(hif_dev);
265 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
270 static void hif_usb_start(void *hif_handle, u8 pipe_id)
272 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
275 hif_dev->flags |= HIF_USB_START;
277 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
278 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
279 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
282 static void hif_usb_stop(void *hif_handle, u8 pipe_id)
284 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
287 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
288 ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
289 hif_dev->tx.tx_skb_cnt = 0;
290 hif_dev->tx.flags |= HIF_USB_TX_STOP;
291 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
294 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
295 struct ath9k_htc_tx_ctl *tx_ctl)
297 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
301 case USB_WLAN_TX_PIPE:
302 ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
304 case USB_REG_OUT_PIPE:
305 ret = hif_usb_send_regout(hif_dev, skb);
308 dev_err(&hif_dev->udev->dev,
309 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
317 static struct ath9k_htc_hif hif_usb = {
318 .transport = ATH9K_HIF_USB,
319 .name = "ath9k_hif_usb",
321 .control_ul_pipe = USB_REG_OUT_PIPE,
322 .control_dl_pipe = USB_REG_IN_PIPE,
324 .start = hif_usb_start,
325 .stop = hif_usb_stop,
326 .send = hif_usb_send,
329 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
332 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
333 int index = 0, i = 0, chk_idx, len = skb->len;
334 int rx_remain_len = 0, rx_pkt_len = 0;
335 u16 pkt_len, pkt_tag, pool_index = 0;
338 spin_lock(&hif_dev->rx_lock);
340 rx_remain_len = hif_dev->rx_remain_len;
341 rx_pkt_len = hif_dev->rx_transfer_len;
343 if (rx_remain_len != 0) {
344 struct sk_buff *remain_skb = hif_dev->remain_skb;
347 ptr = (u8 *) remain_skb->data;
349 index = rx_remain_len;
350 rx_remain_len -= hif_dev->rx_pad_len;
353 memcpy(ptr, skb->data, rx_remain_len);
355 rx_pkt_len += rx_remain_len;
356 hif_dev->rx_remain_len = 0;
357 skb_put(remain_skb, rx_pkt_len);
359 skb_pool[pool_index++] = remain_skb;
362 index = rx_remain_len;
366 spin_unlock(&hif_dev->rx_lock);
368 while (index < len) {
369 ptr = (u8 *) skb->data;
371 pkt_len = ptr[index] + (ptr[index+1] << 8);
372 pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
374 if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) {
377 pad_len = 4 - (pkt_len & 0x3);
382 index = index + 4 + pkt_len + pad_len;
384 if (index > MAX_RX_BUF_SIZE) {
385 spin_lock(&hif_dev->rx_lock);
386 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
387 hif_dev->rx_transfer_len =
388 MAX_RX_BUF_SIZE - chk_idx - 4;
389 hif_dev->rx_pad_len = pad_len;
391 nskb = __dev_alloc_skb(pkt_len + 32,
394 dev_err(&hif_dev->udev->dev,
395 "ath9k_htc: RX memory allocation"
397 spin_unlock(&hif_dev->rx_lock);
400 skb_reserve(nskb, 32);
401 RX_STAT_INC(skb_allocated);
403 memcpy(nskb->data, &(skb->data[chk_idx+4]),
404 hif_dev->rx_transfer_len);
406 /* Record the buffer pointer */
407 hif_dev->remain_skb = nskb;
408 spin_unlock(&hif_dev->rx_lock);
410 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
412 dev_err(&hif_dev->udev->dev,
413 "ath9k_htc: RX memory allocation"
417 skb_reserve(nskb, 32);
418 RX_STAT_INC(skb_allocated);
420 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
421 skb_put(nskb, pkt_len);
422 skb_pool[pool_index++] = nskb;
425 RX_STAT_INC(skb_dropped);
431 for (i = 0; i < pool_index; i++) {
432 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
433 skb_pool[i]->len, USB_WLAN_RX_PIPE);
434 RX_STAT_INC(skb_completed);
438 static void ath9k_hif_usb_rx_cb(struct urb *urb)
440 struct sk_buff *skb = (struct sk_buff *) urb->context;
441 struct hif_device_usb *hif_dev = (struct hif_device_usb *)
442 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
451 switch (urb->status) {
463 if (likely(urb->actual_length != 0)) {
464 skb_put(skb, urb->actual_length);
465 ath9k_hif_usb_rx_stream(hif_dev, skb);
469 skb_reset_tail_pointer(skb);
472 usb_anchor_urb(urb, &hif_dev->rx_submitted);
473 ret = usb_submit_urb(urb, GFP_ATOMIC);
475 usb_unanchor_urb(urb);
484 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
486 struct sk_buff *skb = (struct sk_buff *) urb->context;
487 struct sk_buff *nskb;
488 struct hif_device_usb *hif_dev = (struct hif_device_usb *)
489 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
498 switch (urb->status) {
510 if (likely(urb->actual_length != 0)) {
511 skb_put(skb, urb->actual_length);
513 /* Process the command first */
514 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
515 skb->len, USB_REG_IN_PIPE);
518 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
520 dev_err(&hif_dev->udev->dev,
521 "ath9k_htc: REG_IN memory allocation failure\n");
526 usb_fill_int_urb(urb, hif_dev->udev,
527 usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
528 nskb->data, MAX_REG_IN_BUF_SIZE,
529 ath9k_hif_usb_reg_in_cb, nskb, 1);
531 ret = usb_submit_urb(urb, GFP_ATOMIC);
541 skb_reset_tail_pointer(skb);
544 ret = usb_submit_urb(urb, GFP_ATOMIC);
554 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
556 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
558 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
559 &hif_dev->tx.tx_buf, list) {
560 usb_kill_urb(tx_buf->urb);
561 list_del(&tx_buf->list);
562 usb_free_urb(tx_buf->urb);
567 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
568 &hif_dev->tx.tx_pending, list) {
569 usb_kill_urb(tx_buf->urb);
570 list_del(&tx_buf->list);
571 usb_free_urb(tx_buf->urb);
577 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
579 struct tx_buf *tx_buf;
582 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
583 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
584 spin_lock_init(&hif_dev->tx.tx_lock);
585 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
587 for (i = 0; i < MAX_TX_URB_NUM; i++) {
588 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
592 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
596 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
600 tx_buf->hif_dev = hif_dev;
601 __skb_queue_head_init(&tx_buf->skb_queue);
603 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
606 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
610 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
614 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
616 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
619 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
621 struct urb *urb = NULL;
622 struct sk_buff *skb = NULL;
625 init_usb_anchor(&hif_dev->rx_submitted);
626 spin_lock_init(&hif_dev->rx_lock);
628 for (i = 0; i < MAX_RX_URB_NUM; i++) {
631 urb = usb_alloc_urb(0, GFP_KERNEL);
637 /* Allocate buffer */
638 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
644 usb_fill_bulk_urb(urb, hif_dev->udev,
645 usb_rcvbulkpipe(hif_dev->udev,
647 skb->data, MAX_RX_BUF_SIZE,
648 ath9k_hif_usb_rx_cb, skb);
651 usb_anchor_urb(urb, &hif_dev->rx_submitted);
654 ret = usb_submit_urb(urb, GFP_KERNEL);
656 usb_unanchor_urb(urb);
661 * Drop reference count.
662 * This ensures that the URB is freed when killing them.
674 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
678 static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
680 if (hif_dev->reg_in_urb) {
681 usb_kill_urb(hif_dev->reg_in_urb);
682 if (hif_dev->reg_in_urb->context)
683 kfree_skb((void *)hif_dev->reg_in_urb->context);
684 usb_free_urb(hif_dev->reg_in_urb);
685 hif_dev->reg_in_urb = NULL;
689 static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
693 hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
694 if (hif_dev->reg_in_urb == NULL)
697 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
701 usb_fill_int_urb(hif_dev->reg_in_urb, hif_dev->udev,
702 usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
703 skb->data, MAX_REG_IN_BUF_SIZE,
704 ath9k_hif_usb_reg_in_cb, skb, 1);
706 if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
712 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
716 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
719 init_usb_anchor(&hif_dev->regout_submitted);
722 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
726 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
730 if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
738 static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
740 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
741 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
742 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
743 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
746 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
749 const void *data = hif_dev->firmware->data;
750 size_t len = hif_dev->firmware->size;
751 u32 addr = AR9271_FIRMWARE;
752 u8 *buf = kzalloc(4096, GFP_KERNEL);
758 transfer = min_t(int, len, 4096);
759 memcpy(buf, data, transfer);
761 err = usb_control_msg(hif_dev->udev,
762 usb_sndctrlpipe(hif_dev->udev, 0),
763 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
764 addr >> 8, 0, buf, transfer, HZ);
777 * Issue FW download complete command to firmware.
779 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
780 FIRMWARE_DOWNLOAD_COMP,
782 AR9271_FIRMWARE_TEXT >> 8, 0, NULL, 0, HZ);
786 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
787 "ar9271.fw", (unsigned long) hif_dev->firmware->size);
792 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev,
797 /* Request firmware */
798 ret = request_firmware(&hif_dev->firmware, fw_name, &hif_dev->udev->dev);
800 dev_err(&hif_dev->udev->dev,
801 "ath9k_htc: Firmware - %s not found\n", fw_name);
806 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
808 dev_err(&hif_dev->udev->dev,
809 "ath9k_htc: Unable to allocate URBs\n");
813 /* Download firmware */
814 ret = ath9k_hif_usb_download_fw(hif_dev);
816 dev_err(&hif_dev->udev->dev,
817 "ath9k_htc: Firmware - %s download failed\n", fw_name);
818 goto err_fw_download;
824 ath9k_hif_usb_dealloc_urbs(hif_dev);
826 release_firmware(hif_dev->firmware);
828 hif_dev->firmware = NULL;
832 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
834 ath9k_hif_usb_dealloc_urbs(hif_dev);
835 if (hif_dev->firmware)
836 release_firmware(hif_dev->firmware);
839 static int ath9k_hif_usb_probe(struct usb_interface *interface,
840 const struct usb_device_id *id)
842 struct usb_device *udev = interface_to_usbdev(interface);
843 struct hif_device_usb *hif_dev;
844 const char *fw_name = (const char *) id->driver_info;
847 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
854 hif_dev->udev = udev;
855 hif_dev->interface = interface;
856 hif_dev->device_id = id->idProduct;
858 udev->reset_resume = 1;
860 usb_set_intfdata(interface, hif_dev);
862 ret = ath9k_hif_usb_dev_init(hif_dev, fw_name);
865 goto err_hif_init_usb;
868 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev);
869 if (hif_dev->htc_handle == NULL) {
871 goto err_htc_hw_alloc;
874 ret = ath9k_htc_hw_init(&hif_usb, hif_dev->htc_handle, hif_dev,
875 &hif_dev->udev->dev, hif_dev->device_id,
879 goto err_htc_hw_init;
882 dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
887 ath9k_htc_hw_free(hif_dev->htc_handle);
889 ath9k_hif_usb_dev_deinit(hif_dev);
891 usb_set_intfdata(interface, NULL);
898 static void ath9k_hif_usb_reboot(struct usb_device *udev)
900 u32 reboot_cmd = 0xffffffff;
904 buf = kmalloc(4, GFP_KERNEL);
908 memcpy(buf, &reboot_cmd, 4);
910 ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
913 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
918 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
920 struct usb_device *udev = interface_to_usbdev(interface);
921 struct hif_device_usb *hif_dev =
922 (struct hif_device_usb *) usb_get_intfdata(interface);
925 ath9k_htc_hw_deinit(hif_dev->htc_handle,
926 (udev->state == USB_STATE_NOTATTACHED) ? true : false);
927 ath9k_htc_hw_free(hif_dev->htc_handle);
928 ath9k_hif_usb_dev_deinit(hif_dev);
929 usb_set_intfdata(interface, NULL);
932 if (hif_dev->flags & HIF_USB_START)
933 ath9k_hif_usb_reboot(udev);
936 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
941 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
942 pm_message_t message)
944 struct hif_device_usb *hif_dev =
945 (struct hif_device_usb *) usb_get_intfdata(interface);
947 ath9k_hif_usb_dealloc_urbs(hif_dev);
952 static int ath9k_hif_usb_resume(struct usb_interface *interface)
954 struct hif_device_usb *hif_dev =
955 (struct hif_device_usb *) usb_get_intfdata(interface);
958 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
962 if (hif_dev->firmware) {
963 ret = ath9k_hif_usb_download_fw(hif_dev);
967 ath9k_hif_usb_dealloc_urbs(hif_dev);
973 ret = ath9k_htc_resume(hif_dev->htc_handle);
981 ath9k_hif_usb_dealloc_urbs(hif_dev);
987 static struct usb_driver ath9k_hif_usb_driver = {
988 .name = "ath9k_hif_usb",
989 .probe = ath9k_hif_usb_probe,
990 .disconnect = ath9k_hif_usb_disconnect,
992 .suspend = ath9k_hif_usb_suspend,
993 .resume = ath9k_hif_usb_resume,
994 .reset_resume = ath9k_hif_usb_resume,
996 .id_table = ath9k_hif_usb_ids,
1000 int ath9k_hif_usb_init(void)
1002 return usb_register(&ath9k_hif_usb_driver);
1005 void ath9k_hif_usb_exit(void)
1007 usb_deregister(&ath9k_hif_usb_driver);