2 * Copyright (c) 2010-2011 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.
17 #include <asm/unaligned.h>
20 /* identify firmware images */
21 #define FIRMWARE_AR7010_1_1 "htc_7010.fw"
22 #define FIRMWARE_AR9271 "htc_9271.fw"
24 MODULE_FIRMWARE(FIRMWARE_AR7010_1_1);
25 MODULE_FIRMWARE(FIRMWARE_AR9271);
27 static struct usb_device_id ath9k_hif_usb_ids[] = {
28 { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
29 { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
30 { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
31 { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
32 { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
33 { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
34 { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
35 { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
36 { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
37 { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
38 { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
39 { USB_DEVICE(0x040D, 0x3801) }, /* VIA */
40 { USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */
41 { USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */
42 { USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */
44 { USB_DEVICE(0x0cf3, 0x7015),
45 .driver_info = AR9287_USB }, /* Atheros */
46 { USB_DEVICE(0x1668, 0x1200),
47 .driver_info = AR9287_USB }, /* Verizon */
49 { USB_DEVICE(0x0cf3, 0x7010),
50 .driver_info = AR9280_USB }, /* Atheros */
51 { USB_DEVICE(0x0846, 0x9018),
52 .driver_info = AR9280_USB }, /* Netgear WNDA3200 */
53 { USB_DEVICE(0x083A, 0xA704),
54 .driver_info = AR9280_USB }, /* SMC Networks */
55 { USB_DEVICE(0x0411, 0x017f),
56 .driver_info = AR9280_USB }, /* Sony UWA-BR100 */
57 { USB_DEVICE(0x04da, 0x3904),
58 .driver_info = AR9280_USB },
60 { USB_DEVICE(0x0cf3, 0x20ff),
61 .driver_info = STORAGE_DEVICE },
66 MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
68 static int __hif_usb_tx(struct hif_device_usb *hif_dev);
70 static void hif_usb_regout_cb(struct urb *urb)
72 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
74 switch (urb->status) {
87 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
98 static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
105 urb = usb_alloc_urb(0, GFP_KERNEL);
109 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
116 cmd->hif_dev = hif_dev;
118 usb_fill_bulk_urb(urb, hif_dev->udev,
119 usb_sndbulkpipe(hif_dev->udev, USB_REG_OUT_PIPE),
121 hif_usb_regout_cb, cmd);
123 usb_anchor_urb(urb, &hif_dev->regout_submitted);
124 ret = usb_submit_urb(urb, GFP_KERNEL);
126 usb_unanchor_urb(urb);
134 static void hif_usb_mgmt_cb(struct urb *urb)
136 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
137 struct hif_device_usb *hif_dev;
140 if (!cmd || !cmd->skb || !cmd->hif_dev)
143 hif_dev = cmd->hif_dev;
145 switch (urb->status) {
155 * If the URBs are being flushed, no need to complete
158 spin_lock(&hif_dev->tx.tx_lock);
159 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
160 spin_unlock(&hif_dev->tx.tx_lock);
161 dev_kfree_skb_any(cmd->skb);
165 spin_unlock(&hif_dev->tx.tx_lock);
173 skb_pull(cmd->skb, 4);
174 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
179 static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev,
187 urb = usb_alloc_urb(0, GFP_ATOMIC);
191 cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
198 cmd->hif_dev = hif_dev;
200 hdr = (__le16 *) skb_push(skb, 4);
201 *hdr++ = cpu_to_le16(skb->len - 4);
202 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
204 usb_fill_bulk_urb(urb, hif_dev->udev,
205 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
207 hif_usb_mgmt_cb, cmd);
209 usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
210 ret = usb_submit_urb(urb, GFP_ATOMIC);
212 usb_unanchor_urb(urb);
220 static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
221 struct sk_buff_head *list)
225 while ((skb = __skb_dequeue(list)) != NULL) {
226 dev_kfree_skb_any(skb);
230 static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
231 struct sk_buff_head *queue,
236 while ((skb = __skb_dequeue(queue)) != NULL) {
237 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
240 TX_STAT_INC(skb_success);
242 TX_STAT_INC(skb_failed);
246 static void hif_usb_tx_cb(struct urb *urb)
248 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
249 struct hif_device_usb *hif_dev;
252 if (!tx_buf || !tx_buf->hif_dev)
255 hif_dev = tx_buf->hif_dev;
257 switch (urb->status) {
267 * If the URBs are being flushed, no need to add this
268 * URB to the free list.
270 spin_lock(&hif_dev->tx.tx_lock);
271 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
272 spin_unlock(&hif_dev->tx.tx_lock);
273 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
276 spin_unlock(&hif_dev->tx.tx_lock);
284 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
286 /* Re-initialize the SKB queue */
287 tx_buf->len = tx_buf->offset = 0;
288 __skb_queue_head_init(&tx_buf->skb_queue);
290 /* Add this TX buffer to the free list */
291 spin_lock(&hif_dev->tx.tx_lock);
292 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
293 hif_dev->tx.tx_buf_cnt++;
294 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
295 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
296 TX_STAT_INC(buf_completed);
297 spin_unlock(&hif_dev->tx.tx_lock);
300 /* TX lock has to be taken */
301 static int __hif_usb_tx(struct hif_device_usb *hif_dev)
303 struct tx_buf *tx_buf = NULL;
304 struct sk_buff *nskb = NULL;
310 if (hif_dev->tx.tx_skb_cnt == 0)
313 /* Check if a free TX buffer is available */
314 if (list_empty(&hif_dev->tx.tx_buf))
317 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
318 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
319 hif_dev->tx.tx_buf_cnt--;
321 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
323 for (i = 0; i < tx_skb_cnt; i++) {
324 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
326 /* Should never be NULL */
329 hif_dev->tx.tx_skb_cnt--;
332 buf += tx_buf->offset;
334 *hdr++ = cpu_to_le16(nskb->len);
335 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
337 memcpy(buf, nskb->data, nskb->len);
338 tx_buf->len = nskb->len + 4;
340 if (i < (tx_skb_cnt - 1))
341 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
343 if (i == (tx_skb_cnt - 1))
344 tx_buf->len += tx_buf->offset;
346 __skb_queue_tail(&tx_buf->skb_queue, nskb);
347 TX_STAT_INC(skb_queued);
350 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
351 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
352 tx_buf->buf, tx_buf->len,
353 hif_usb_tx_cb, tx_buf);
355 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
357 tx_buf->len = tx_buf->offset = 0;
358 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false);
359 __skb_queue_head_init(&tx_buf->skb_queue);
360 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
361 hif_dev->tx.tx_buf_cnt++;
365 TX_STAT_INC(buf_queued);
370 static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
372 struct ath9k_htc_tx_ctl *tx_ctl;
376 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
378 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
379 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
383 /* Check if the max queue count has been reached */
384 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
385 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
389 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
391 tx_ctl = HTC_SKB_CB(skb);
393 /* Mgmt/Beacon frames don't use the TX buffer pool */
394 if ((tx_ctl->type == ATH9K_HTC_MGMT) ||
395 (tx_ctl->type == ATH9K_HTC_BEACON)) {
396 ret = hif_usb_send_mgmt(hif_dev, skb);
399 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
401 if ((tx_ctl->type == ATH9K_HTC_NORMAL) ||
402 (tx_ctl->type == ATH9K_HTC_AMPDU)) {
403 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
404 hif_dev->tx.tx_skb_cnt++;
407 /* Check if AMPDUs have to be sent immediately */
408 if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
409 (hif_dev->tx.tx_skb_cnt < 2)) {
410 __hif_usb_tx(hif_dev);
413 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
418 static void hif_usb_start(void *hif_handle)
420 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
423 hif_dev->flags |= HIF_USB_START;
425 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
426 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
427 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
430 static void hif_usb_stop(void *hif_handle)
432 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
433 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
436 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
437 ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false);
438 hif_dev->tx.tx_skb_cnt = 0;
439 hif_dev->tx.flags |= HIF_USB_TX_STOP;
440 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
442 /* The pending URBs have to be canceled. */
443 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
444 &hif_dev->tx.tx_pending, list) {
445 usb_kill_urb(tx_buf->urb);
448 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
451 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
453 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
457 case USB_WLAN_TX_PIPE:
458 ret = hif_usb_send_tx(hif_dev, skb);
460 case USB_REG_OUT_PIPE:
461 ret = hif_usb_send_regout(hif_dev, skb);
464 dev_err(&hif_dev->udev->dev,
465 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
473 static inline bool check_index(struct sk_buff *skb, u8 idx)
475 struct ath9k_htc_tx_ctl *tx_ctl;
477 tx_ctl = HTC_SKB_CB(skb);
479 if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
480 (tx_ctl->sta_idx == idx))
486 static void hif_usb_sta_drain(void *hif_handle, u8 idx)
488 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
489 struct sk_buff *skb, *tmp;
492 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
494 skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
495 if (check_index(skb, idx)) {
496 __skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
497 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
499 hif_dev->tx.tx_skb_cnt--;
500 TX_STAT_INC(skb_failed);
504 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
507 static struct ath9k_htc_hif hif_usb = {
508 .transport = ATH9K_HIF_USB,
509 .name = "ath9k_hif_usb",
511 .control_ul_pipe = USB_REG_OUT_PIPE,
512 .control_dl_pipe = USB_REG_IN_PIPE,
514 .start = hif_usb_start,
515 .stop = hif_usb_stop,
516 .sta_drain = hif_usb_sta_drain,
517 .send = hif_usb_send,
520 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
523 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
524 int index = 0, i = 0, len = skb->len;
525 int rx_remain_len, rx_pkt_len;
529 spin_lock(&hif_dev->rx_lock);
531 rx_remain_len = hif_dev->rx_remain_len;
532 rx_pkt_len = hif_dev->rx_transfer_len;
534 if (rx_remain_len != 0) {
535 struct sk_buff *remain_skb = hif_dev->remain_skb;
538 ptr = (u8 *) remain_skb->data;
540 index = rx_remain_len;
541 rx_remain_len -= hif_dev->rx_pad_len;
544 memcpy(ptr, skb->data, rx_remain_len);
546 rx_pkt_len += rx_remain_len;
547 hif_dev->rx_remain_len = 0;
548 skb_put(remain_skb, rx_pkt_len);
550 skb_pool[pool_index++] = remain_skb;
553 index = rx_remain_len;
557 spin_unlock(&hif_dev->rx_lock);
559 while (index < len) {
565 ptr = (u8 *) skb->data;
567 pkt_len = get_unaligned_le16(ptr + index);
568 pkt_tag = get_unaligned_le16(ptr + index + 2);
570 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
571 RX_STAT_INC(skb_dropped);
575 pad_len = 4 - (pkt_len & 0x3);
580 index = index + 4 + pkt_len + pad_len;
582 if (index > MAX_RX_BUF_SIZE) {
583 spin_lock(&hif_dev->rx_lock);
584 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
585 hif_dev->rx_transfer_len =
586 MAX_RX_BUF_SIZE - chk_idx - 4;
587 hif_dev->rx_pad_len = pad_len;
589 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
591 dev_err(&hif_dev->udev->dev,
592 "ath9k_htc: RX memory allocation error\n");
593 spin_unlock(&hif_dev->rx_lock);
596 skb_reserve(nskb, 32);
597 RX_STAT_INC(skb_allocated);
599 memcpy(nskb->data, &(skb->data[chk_idx+4]),
600 hif_dev->rx_transfer_len);
602 /* Record the buffer pointer */
603 hif_dev->remain_skb = nskb;
604 spin_unlock(&hif_dev->rx_lock);
606 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
608 dev_err(&hif_dev->udev->dev,
609 "ath9k_htc: RX memory allocation error\n");
612 skb_reserve(nskb, 32);
613 RX_STAT_INC(skb_allocated);
615 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
616 skb_put(nskb, pkt_len);
617 skb_pool[pool_index++] = nskb;
622 for (i = 0; i < pool_index; i++) {
623 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
624 skb_pool[i]->len, USB_WLAN_RX_PIPE);
625 RX_STAT_INC(skb_completed);
629 static void ath9k_hif_usb_rx_cb(struct urb *urb)
631 struct sk_buff *skb = (struct sk_buff *) urb->context;
632 struct hif_device_usb *hif_dev =
633 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
642 switch (urb->status) {
654 if (likely(urb->actual_length != 0)) {
655 skb_put(skb, urb->actual_length);
656 ath9k_hif_usb_rx_stream(hif_dev, skb);
660 skb_reset_tail_pointer(skb);
663 usb_anchor_urb(urb, &hif_dev->rx_submitted);
664 ret = usb_submit_urb(urb, GFP_ATOMIC);
666 usb_unanchor_urb(urb);
675 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
677 struct sk_buff *skb = (struct sk_buff *) urb->context;
678 struct sk_buff *nskb;
679 struct hif_device_usb *hif_dev =
680 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
689 switch (urb->status) {
698 skb_reset_tail_pointer(skb);
704 if (likely(urb->actual_length != 0)) {
705 skb_put(skb, urb->actual_length);
707 /* Process the command first */
708 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
709 skb->len, USB_REG_IN_PIPE);
712 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
714 dev_err(&hif_dev->udev->dev,
715 "ath9k_htc: REG_IN memory allocation failure\n");
720 usb_fill_bulk_urb(urb, hif_dev->udev,
721 usb_rcvbulkpipe(hif_dev->udev,
723 nskb->data, MAX_REG_IN_BUF_SIZE,
724 ath9k_hif_usb_reg_in_cb, nskb);
728 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
729 ret = usb_submit_urb(urb, GFP_ATOMIC);
731 usb_unanchor_urb(urb);
741 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
743 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
746 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
747 &hif_dev->tx.tx_buf, list) {
748 usb_kill_urb(tx_buf->urb);
749 list_del(&tx_buf->list);
750 usb_free_urb(tx_buf->urb);
755 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
756 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
757 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
759 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
760 &hif_dev->tx.tx_pending, list) {
761 usb_kill_urb(tx_buf->urb);
762 list_del(&tx_buf->list);
763 usb_free_urb(tx_buf->urb);
768 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
771 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
773 struct tx_buf *tx_buf;
776 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
777 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
778 spin_lock_init(&hif_dev->tx.tx_lock);
779 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
780 init_usb_anchor(&hif_dev->mgmt_submitted);
782 for (i = 0; i < MAX_TX_URB_NUM; i++) {
783 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
787 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
791 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
795 tx_buf->hif_dev = hif_dev;
796 __skb_queue_head_init(&tx_buf->skb_queue);
798 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
801 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
809 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
813 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
815 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
818 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
820 struct urb *urb = NULL;
821 struct sk_buff *skb = NULL;
824 init_usb_anchor(&hif_dev->rx_submitted);
825 spin_lock_init(&hif_dev->rx_lock);
827 for (i = 0; i < MAX_RX_URB_NUM; i++) {
830 urb = usb_alloc_urb(0, GFP_KERNEL);
836 /* Allocate buffer */
837 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
843 usb_fill_bulk_urb(urb, hif_dev->udev,
844 usb_rcvbulkpipe(hif_dev->udev,
846 skb->data, MAX_RX_BUF_SIZE,
847 ath9k_hif_usb_rx_cb, skb);
850 usb_anchor_urb(urb, &hif_dev->rx_submitted);
853 ret = usb_submit_urb(urb, GFP_KERNEL);
855 usb_unanchor_urb(urb);
860 * Drop reference count.
861 * This ensures that the URB is freed when killing them.
873 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
877 static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
879 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
882 static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
884 struct urb *urb = NULL;
885 struct sk_buff *skb = NULL;
888 init_usb_anchor(&hif_dev->reg_in_submitted);
890 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
893 urb = usb_alloc_urb(0, GFP_KERNEL);
899 /* Allocate buffer */
900 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
906 usb_fill_bulk_urb(urb, hif_dev->udev,
907 usb_rcvbulkpipe(hif_dev->udev,
909 skb->data, MAX_REG_IN_BUF_SIZE,
910 ath9k_hif_usb_reg_in_cb, skb);
913 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
916 ret = usb_submit_urb(urb, GFP_KERNEL);
918 usb_unanchor_urb(urb);
923 * Drop reference count.
924 * This ensures that the URB is freed when killing them.
936 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
940 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
943 init_usb_anchor(&hif_dev->regout_submitted);
946 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
950 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
954 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
959 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
961 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
966 static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
968 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
969 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
970 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
971 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
974 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
977 const void *data = hif_dev->fw_data;
978 size_t len = hif_dev->fw_size;
979 u32 addr = AR9271_FIRMWARE;
980 u8 *buf = kzalloc(4096, GFP_KERNEL);
987 transfer = min_t(size_t, len, 4096);
988 memcpy(buf, data, transfer);
990 err = usb_control_msg(hif_dev->udev,
991 usb_sndctrlpipe(hif_dev->udev, 0),
992 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
993 addr >> 8, 0, buf, transfer, HZ);
1005 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1006 firm_offset = AR7010_FIRMWARE_TEXT;
1008 firm_offset = AR9271_FIRMWARE_TEXT;
1011 * Issue FW download complete command to firmware.
1013 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1014 FIRMWARE_DOWNLOAD_COMP,
1016 firm_offset >> 8, 0, NULL, 0, HZ);
1020 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
1021 hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
1026 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
1028 struct usb_host_interface *alt = &hif_dev->interface->altsetting[0];
1029 struct usb_endpoint_descriptor *endp;
1032 ret = ath9k_hif_usb_download_fw(hif_dev);
1034 dev_err(&hif_dev->udev->dev,
1035 "ath9k_htc: Firmware - %s download failed\n",
1040 /* On downloading the firmware to the target, the USB descriptor of EP4
1041 * is 'patched' to change the type of the endpoint to Bulk. This will
1042 * bring down CPU usage during the scan period.
1044 for (idx = 0; idx < alt->desc.bNumEndpoints; idx++) {
1045 endp = &alt->endpoint[idx].desc;
1046 if ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1047 == USB_ENDPOINT_XFER_INT) {
1048 endp->bmAttributes &= ~USB_ENDPOINT_XFERTYPE_MASK;
1049 endp->bmAttributes |= USB_ENDPOINT_XFER_BULK;
1050 endp->bInterval = 0;
1055 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1057 dev_err(&hif_dev->udev->dev,
1058 "ath9k_htc: Unable to allocate URBs\n");
1065 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1067 ath9k_hif_usb_dealloc_urbs(hif_dev);
1071 * If initialization fails or the FW cannot be retrieved,
1072 * detach the device.
1074 static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1076 struct device *dev = &hif_dev->udev->dev;
1077 struct device *parent = dev->parent;
1079 complete(&hif_dev->fw_done);
1082 device_lock(parent);
1084 device_release_driver(dev);
1087 device_unlock(parent);
1090 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1092 struct hif_device_usb *hif_dev = context;
1096 dev_err(&hif_dev->udev->dev,
1097 "ath9k_htc: Failed to get firmware %s\n",
1102 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1103 &hif_dev->udev->dev);
1104 if (hif_dev->htc_handle == NULL)
1107 hif_dev->fw_data = fw->data;
1108 hif_dev->fw_size = fw->size;
1110 /* Proceed with initialization */
1112 ret = ath9k_hif_usb_dev_init(hif_dev);
1116 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1117 &hif_dev->interface->dev,
1118 hif_dev->usb_device_id->idProduct,
1119 hif_dev->udev->product,
1120 hif_dev->usb_device_id->driver_info);
1123 goto err_htc_hw_init;
1126 release_firmware(fw);
1127 hif_dev->flags |= HIF_USB_READY;
1128 complete(&hif_dev->fw_done);
1133 ath9k_hif_usb_dev_deinit(hif_dev);
1135 ath9k_htc_hw_free(hif_dev->htc_handle);
1137 release_firmware(fw);
1139 ath9k_hif_usb_firmware_fail(hif_dev);
1143 * An exact copy of the function from zd1211rw.
1145 static int send_eject_command(struct usb_interface *interface)
1147 struct usb_device *udev = interface_to_usbdev(interface);
1148 struct usb_host_interface *iface_desc = &interface->altsetting[0];
1149 struct usb_endpoint_descriptor *endpoint;
1154 /* Find bulk out endpoint */
1155 for (r = 1; r >= 0; r--) {
1156 endpoint = &iface_desc->endpoint[r].desc;
1157 if (usb_endpoint_dir_out(endpoint) &&
1158 usb_endpoint_xfer_bulk(endpoint)) {
1159 bulk_out_ep = endpoint->bEndpointAddress;
1165 "ath9k_htc: Could not find bulk out endpoint\n");
1169 cmd = kzalloc(31, GFP_KERNEL);
1173 /* USB bulk command block */
1174 cmd[0] = 0x55; /* bulk command signature */
1175 cmd[1] = 0x53; /* bulk command signature */
1176 cmd[2] = 0x42; /* bulk command signature */
1177 cmd[3] = 0x43; /* bulk command signature */
1178 cmd[14] = 6; /* command length */
1180 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
1181 cmd[19] = 0x2; /* eject disc */
1183 dev_info(&udev->dev, "Ejecting storage device...\n");
1184 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1185 cmd, 31, NULL, 2000);
1190 /* At this point, the device disconnects and reconnects with the real
1193 usb_set_intfdata(interface, NULL);
1197 static int ath9k_hif_usb_probe(struct usb_interface *interface,
1198 const struct usb_device_id *id)
1200 struct usb_device *udev = interface_to_usbdev(interface);
1201 struct hif_device_usb *hif_dev;
1204 if (id->driver_info == STORAGE_DEVICE)
1205 return send_eject_command(interface);
1207 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1215 hif_dev->udev = udev;
1216 hif_dev->interface = interface;
1217 hif_dev->usb_device_id = id;
1219 udev->reset_resume = 1;
1221 usb_set_intfdata(interface, hif_dev);
1223 init_completion(&hif_dev->fw_done);
1225 /* Find out which firmware to load */
1227 if (IS_AR7010_DEVICE(id->driver_info))
1228 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
1230 hif_dev->fw_name = FIRMWARE_AR9271;
1232 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1233 &hif_dev->udev->dev, GFP_KERNEL,
1234 hif_dev, ath9k_hif_usb_firmware_cb);
1236 dev_err(&hif_dev->udev->dev,
1237 "ath9k_htc: Async request for firmware %s failed\n",
1242 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1248 usb_set_intfdata(interface, NULL);
1255 static void ath9k_hif_usb_reboot(struct usb_device *udev)
1257 u32 reboot_cmd = 0xffffffff;
1261 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1265 ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
1268 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1273 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1275 struct usb_device *udev = interface_to_usbdev(interface);
1276 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1277 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
1282 wait_for_completion(&hif_dev->fw_done);
1284 if (hif_dev->flags & HIF_USB_READY) {
1285 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1286 ath9k_htc_hw_free(hif_dev->htc_handle);
1287 ath9k_hif_usb_dev_deinit(hif_dev);
1290 usb_set_intfdata(interface, NULL);
1292 if (!unplugged && (hif_dev->flags & HIF_USB_START))
1293 ath9k_hif_usb_reboot(udev);
1296 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1301 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1302 pm_message_t message)
1304 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1307 * The device has to be set to FULLSLEEP mode in case no
1310 if (!(hif_dev->flags & HIF_USB_START))
1311 ath9k_htc_suspend(hif_dev->htc_handle);
1313 ath9k_hif_usb_dealloc_urbs(hif_dev);
1318 static int ath9k_hif_usb_resume(struct usb_interface *interface)
1320 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1321 struct htc_target *htc_handle = hif_dev->htc_handle;
1323 const struct firmware *fw;
1325 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1329 if (hif_dev->flags & HIF_USB_READY) {
1330 /* request cached firmware during suspend/resume cycle */
1331 ret = request_firmware(&fw, hif_dev->fw_name,
1332 &hif_dev->udev->dev);
1336 hif_dev->fw_data = fw->data;
1337 hif_dev->fw_size = fw->size;
1338 ret = ath9k_hif_usb_download_fw(hif_dev);
1339 release_firmware(fw);
1343 ath9k_hif_usb_dealloc_urbs(hif_dev);
1349 ret = ath9k_htc_resume(htc_handle);
1357 ath9k_hif_usb_dealloc_urbs(hif_dev);
1363 static struct usb_driver ath9k_hif_usb_driver = {
1364 .name = KBUILD_MODNAME,
1365 .probe = ath9k_hif_usb_probe,
1366 .disconnect = ath9k_hif_usb_disconnect,
1368 .suspend = ath9k_hif_usb_suspend,
1369 .resume = ath9k_hif_usb_resume,
1370 .reset_resume = ath9k_hif_usb_resume,
1372 .id_table = ath9k_hif_usb_ids,
1374 .disable_hub_initiated_lpm = 1,
1377 int ath9k_hif_usb_init(void)
1379 return usb_register(&ath9k_hif_usb_driver);
1382 void ath9k_hif_usb_exit(void)
1384 usb_deregister(&ath9k_hif_usb_driver);