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 MODULE_FIRMWARE(HTC_7010_MODULE_FW);
21 MODULE_FIRMWARE(HTC_9271_MODULE_FW);
23 static struct usb_device_id ath9k_hif_usb_ids[] = {
24 { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
25 { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
26 { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
27 { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
28 { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
29 { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
30 { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
31 { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
32 { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
33 { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
34 { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
35 { USB_DEVICE(0x040D, 0x3801) }, /* VIA */
36 { USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */
37 { USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */
38 { USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */
39 { USB_DEVICE(0x0471, 0x209e) }, /* Philips (or NXP) PTA01 */
40 { USB_DEVICE(0x1eda, 0x2315) }, /* AirTies */
42 { USB_DEVICE(0x0cf3, 0x7015),
43 .driver_info = AR9287_USB }, /* Atheros */
44 { USB_DEVICE(0x1668, 0x1200),
45 .driver_info = AR9287_USB }, /* Verizon */
47 { USB_DEVICE(0x0cf3, 0x7010),
48 .driver_info = AR9280_USB }, /* Atheros */
49 { USB_DEVICE(0x0846, 0x9018),
50 .driver_info = AR9280_USB }, /* Netgear WNDA3200 */
51 { USB_DEVICE(0x083A, 0xA704),
52 .driver_info = AR9280_USB }, /* SMC Networks */
53 { USB_DEVICE(0x0411, 0x017f),
54 .driver_info = AR9280_USB }, /* Sony UWA-BR100 */
55 { USB_DEVICE(0x0411, 0x0197),
56 .driver_info = AR9280_USB }, /* Buffalo WLI-UV-AG300P */
57 { USB_DEVICE(0x04da, 0x3904),
58 .driver_info = AR9280_USB },
59 { USB_DEVICE(0x0930, 0x0a08),
60 .driver_info = AR9280_USB }, /* Toshiba WLM-20U2 and GN-1080 */
62 { USB_DEVICE(0x0cf3, 0x20ff),
63 .driver_info = STORAGE_DEVICE },
68 MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
70 static int __hif_usb_tx(struct hif_device_usb *hif_dev);
72 static void hif_usb_regout_cb(struct urb *urb)
74 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
76 switch (urb->status) {
89 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
100 static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
107 urb = usb_alloc_urb(0, GFP_KERNEL);
111 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
118 cmd->hif_dev = hif_dev;
120 usb_fill_int_urb(urb, hif_dev->udev,
121 usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
123 hif_usb_regout_cb, cmd, 1);
125 usb_anchor_urb(urb, &hif_dev->regout_submitted);
126 ret = usb_submit_urb(urb, GFP_KERNEL);
128 usb_unanchor_urb(urb);
136 static void hif_usb_mgmt_cb(struct urb *urb)
138 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
139 struct hif_device_usb *hif_dev;
142 if (!cmd || !cmd->skb || !cmd->hif_dev)
145 hif_dev = cmd->hif_dev;
147 switch (urb->status) {
157 * If the URBs are being flushed, no need to complete
160 spin_lock(&hif_dev->tx.tx_lock);
161 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
162 spin_unlock(&hif_dev->tx.tx_lock);
163 dev_kfree_skb_any(cmd->skb);
167 spin_unlock(&hif_dev->tx.tx_lock);
175 skb_pull(cmd->skb, 4);
176 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
181 static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev,
189 urb = usb_alloc_urb(0, GFP_ATOMIC);
193 cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
200 cmd->hif_dev = hif_dev;
202 hdr = (__le16 *) skb_push(skb, 4);
203 *hdr++ = cpu_to_le16(skb->len - 4);
204 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
206 usb_fill_bulk_urb(urb, hif_dev->udev,
207 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
209 hif_usb_mgmt_cb, cmd);
211 usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
212 ret = usb_submit_urb(urb, GFP_ATOMIC);
214 usb_unanchor_urb(urb);
222 static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
223 struct sk_buff_head *list)
227 while ((skb = __skb_dequeue(list)) != NULL) {
228 dev_kfree_skb_any(skb);
232 static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
233 struct sk_buff_head *queue,
238 while ((skb = __skb_dequeue(queue)) != NULL) {
239 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
242 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
245 TX_STAT_INC(skb_success);
246 TX_STAT_ADD(skb_success_bytes, ln);
249 TX_STAT_INC(skb_failed);
253 static void hif_usb_tx_cb(struct urb *urb)
255 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
256 struct hif_device_usb *hif_dev;
259 if (!tx_buf || !tx_buf->hif_dev)
262 hif_dev = tx_buf->hif_dev;
264 switch (urb->status) {
274 * If the URBs are being flushed, no need to add this
275 * URB to the free list.
277 spin_lock(&hif_dev->tx.tx_lock);
278 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
279 spin_unlock(&hif_dev->tx.tx_lock);
280 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
283 spin_unlock(&hif_dev->tx.tx_lock);
291 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
293 /* Re-initialize the SKB queue */
294 tx_buf->len = tx_buf->offset = 0;
295 __skb_queue_head_init(&tx_buf->skb_queue);
297 /* Add this TX buffer to the free list */
298 spin_lock(&hif_dev->tx.tx_lock);
299 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
300 hif_dev->tx.tx_buf_cnt++;
301 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
302 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
303 TX_STAT_INC(buf_completed);
304 spin_unlock(&hif_dev->tx.tx_lock);
307 /* TX lock has to be taken */
308 static int __hif_usb_tx(struct hif_device_usb *hif_dev)
310 struct tx_buf *tx_buf = NULL;
311 struct sk_buff *nskb = NULL;
317 if (hif_dev->tx.tx_skb_cnt == 0)
320 /* Check if a free TX buffer is available */
321 if (list_empty(&hif_dev->tx.tx_buf))
324 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
325 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
326 hif_dev->tx.tx_buf_cnt--;
328 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
330 for (i = 0; i < tx_skb_cnt; i++) {
331 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
333 /* Should never be NULL */
336 hif_dev->tx.tx_skb_cnt--;
339 buf += tx_buf->offset;
341 *hdr++ = cpu_to_le16(nskb->len);
342 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
344 memcpy(buf, nskb->data, nskb->len);
345 tx_buf->len = nskb->len + 4;
347 if (i < (tx_skb_cnt - 1))
348 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
350 if (i == (tx_skb_cnt - 1))
351 tx_buf->len += tx_buf->offset;
353 __skb_queue_tail(&tx_buf->skb_queue, nskb);
354 TX_STAT_INC(skb_queued);
357 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
358 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
359 tx_buf->buf, tx_buf->len,
360 hif_usb_tx_cb, tx_buf);
362 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
364 tx_buf->len = tx_buf->offset = 0;
365 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false);
366 __skb_queue_head_init(&tx_buf->skb_queue);
367 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
368 hif_dev->tx.tx_buf_cnt++;
372 TX_STAT_INC(buf_queued);
377 static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
379 struct ath9k_htc_tx_ctl *tx_ctl;
383 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
385 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
386 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
390 /* Check if the max queue count has been reached */
391 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
392 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
396 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
398 tx_ctl = HTC_SKB_CB(skb);
400 /* Mgmt/Beacon frames don't use the TX buffer pool */
401 if ((tx_ctl->type == ATH9K_HTC_MGMT) ||
402 (tx_ctl->type == ATH9K_HTC_BEACON)) {
403 ret = hif_usb_send_mgmt(hif_dev, skb);
406 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
408 if ((tx_ctl->type == ATH9K_HTC_NORMAL) ||
409 (tx_ctl->type == ATH9K_HTC_AMPDU)) {
410 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
411 hif_dev->tx.tx_skb_cnt++;
414 /* Check if AMPDUs have to be sent immediately */
415 if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
416 (hif_dev->tx.tx_skb_cnt < 2)) {
417 __hif_usb_tx(hif_dev);
420 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
425 static void hif_usb_start(void *hif_handle)
427 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
430 hif_dev->flags |= HIF_USB_START;
432 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
433 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
434 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
437 static void hif_usb_stop(void *hif_handle)
439 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
440 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
443 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
444 ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false);
445 hif_dev->tx.tx_skb_cnt = 0;
446 hif_dev->tx.flags |= HIF_USB_TX_STOP;
447 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
449 /* The pending URBs have to be canceled. */
450 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
451 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
452 &hif_dev->tx.tx_pending, list) {
453 usb_get_urb(tx_buf->urb);
454 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
455 usb_kill_urb(tx_buf->urb);
456 list_del(&tx_buf->list);
457 usb_free_urb(tx_buf->urb);
460 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
462 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
464 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
467 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
469 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
473 case USB_WLAN_TX_PIPE:
474 ret = hif_usb_send_tx(hif_dev, skb);
476 case USB_REG_OUT_PIPE:
477 ret = hif_usb_send_regout(hif_dev, skb);
480 dev_err(&hif_dev->udev->dev,
481 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
489 static inline bool check_index(struct sk_buff *skb, u8 idx)
491 struct ath9k_htc_tx_ctl *tx_ctl;
493 tx_ctl = HTC_SKB_CB(skb);
495 if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
496 (tx_ctl->sta_idx == idx))
502 static void hif_usb_sta_drain(void *hif_handle, u8 idx)
504 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
505 struct sk_buff *skb, *tmp;
508 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
510 skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
511 if (check_index(skb, idx)) {
512 __skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
513 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
515 hif_dev->tx.tx_skb_cnt--;
516 TX_STAT_INC(skb_failed);
520 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
523 static struct ath9k_htc_hif hif_usb = {
524 .transport = ATH9K_HIF_USB,
525 .name = "ath9k_hif_usb",
527 .control_ul_pipe = USB_REG_OUT_PIPE,
528 .control_dl_pipe = USB_REG_IN_PIPE,
530 .start = hif_usb_start,
531 .stop = hif_usb_stop,
532 .sta_drain = hif_usb_sta_drain,
533 .send = hif_usb_send,
536 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
539 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
540 int index = 0, i, len = skb->len;
541 int rx_remain_len, rx_pkt_len;
545 spin_lock(&hif_dev->rx_lock);
547 rx_remain_len = hif_dev->rx_remain_len;
548 rx_pkt_len = hif_dev->rx_transfer_len;
550 if (rx_remain_len != 0) {
551 struct sk_buff *remain_skb = hif_dev->remain_skb;
554 ptr = (u8 *) remain_skb->data;
556 index = rx_remain_len;
557 rx_remain_len -= hif_dev->rx_pad_len;
560 memcpy(ptr, skb->data, rx_remain_len);
562 rx_pkt_len += rx_remain_len;
563 hif_dev->rx_remain_len = 0;
564 skb_put(remain_skb, rx_pkt_len);
566 skb_pool[pool_index++] = remain_skb;
569 index = rx_remain_len;
573 spin_unlock(&hif_dev->rx_lock);
575 while (index < len) {
581 ptr = (u8 *) skb->data;
583 pkt_len = get_unaligned_le16(ptr + index);
584 pkt_tag = get_unaligned_le16(ptr + index + 2);
586 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
587 RX_STAT_INC(skb_dropped);
591 if (pkt_len > 2 * MAX_RX_BUF_SIZE) {
592 dev_err(&hif_dev->udev->dev,
593 "ath9k_htc: invalid pkt_len (%x)\n", pkt_len);
594 RX_STAT_INC(skb_dropped);
598 pad_len = 4 - (pkt_len & 0x3);
603 index = index + 4 + pkt_len + pad_len;
605 if (index > MAX_RX_BUF_SIZE) {
606 spin_lock(&hif_dev->rx_lock);
607 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
608 hif_dev->rx_transfer_len =
609 MAX_RX_BUF_SIZE - chk_idx - 4;
610 hif_dev->rx_pad_len = pad_len;
612 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
614 dev_err(&hif_dev->udev->dev,
615 "ath9k_htc: RX memory allocation error\n");
616 spin_unlock(&hif_dev->rx_lock);
619 skb_reserve(nskb, 32);
620 RX_STAT_INC(skb_allocated);
622 memcpy(nskb->data, &(skb->data[chk_idx+4]),
623 hif_dev->rx_transfer_len);
625 /* Record the buffer pointer */
626 hif_dev->remain_skb = nskb;
627 spin_unlock(&hif_dev->rx_lock);
629 if (pool_index == MAX_PKT_NUM_IN_TRANSFER) {
630 dev_err(&hif_dev->udev->dev,
631 "ath9k_htc: over RX MAX_PKT_NUM\n");
634 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
636 dev_err(&hif_dev->udev->dev,
637 "ath9k_htc: RX memory allocation error\n");
640 skb_reserve(nskb, 32);
641 RX_STAT_INC(skb_allocated);
643 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
644 skb_put(nskb, pkt_len);
645 skb_pool[pool_index++] = nskb;
650 for (i = 0; i < pool_index; i++) {
651 RX_STAT_ADD(skb_completed_bytes, skb_pool[i]->len);
652 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
653 skb_pool[i]->len, USB_WLAN_RX_PIPE);
654 RX_STAT_INC(skb_completed);
658 static void ath9k_hif_usb_rx_cb(struct urb *urb)
660 struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
661 struct hif_device_usb *hif_dev = rx_buf->hif_dev;
662 struct sk_buff *skb = rx_buf->skb;
671 switch (urb->status) {
683 if (likely(urb->actual_length != 0)) {
684 skb_put(skb, urb->actual_length);
685 ath9k_hif_usb_rx_stream(hif_dev, skb);
689 skb_reset_tail_pointer(skb);
692 usb_anchor_urb(urb, &hif_dev->rx_submitted);
693 ret = usb_submit_urb(urb, GFP_ATOMIC);
695 usb_unanchor_urb(urb);
705 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
707 struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
708 struct hif_device_usb *hif_dev = rx_buf->hif_dev;
709 struct sk_buff *skb = rx_buf->skb;
710 struct sk_buff *nskb;
719 switch (urb->status) {
728 skb_reset_tail_pointer(skb);
734 if (likely(urb->actual_length != 0)) {
735 skb_put(skb, urb->actual_length);
737 /* Process the command first */
738 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
739 skb->len, USB_REG_IN_PIPE);
742 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
744 dev_err(&hif_dev->udev->dev,
745 "ath9k_htc: REG_IN memory allocation failure\n");
752 usb_fill_int_urb(urb, hif_dev->udev,
753 usb_rcvintpipe(hif_dev->udev,
755 nskb->data, MAX_REG_IN_BUF_SIZE,
756 ath9k_hif_usb_reg_in_cb, rx_buf, 1);
760 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
761 ret = usb_submit_urb(urb, GFP_ATOMIC);
763 usb_unanchor_urb(urb);
774 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
776 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
779 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
780 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
781 &hif_dev->tx.tx_buf, list) {
782 usb_get_urb(tx_buf->urb);
783 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
784 usb_kill_urb(tx_buf->urb);
785 list_del(&tx_buf->list);
786 usb_free_urb(tx_buf->urb);
789 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
791 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
793 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
794 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
795 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
797 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
798 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
799 &hif_dev->tx.tx_pending, list) {
800 usb_get_urb(tx_buf->urb);
801 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
802 usb_kill_urb(tx_buf->urb);
803 list_del(&tx_buf->list);
804 usb_free_urb(tx_buf->urb);
807 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
809 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
811 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
814 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
816 struct tx_buf *tx_buf;
819 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
820 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
821 spin_lock_init(&hif_dev->tx.tx_lock);
822 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
823 init_usb_anchor(&hif_dev->mgmt_submitted);
825 for (i = 0; i < MAX_TX_URB_NUM; i++) {
826 tx_buf = kzalloc(sizeof(*tx_buf), GFP_KERNEL);
830 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
834 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
838 tx_buf->hif_dev = hif_dev;
839 __skb_queue_head_init(&tx_buf->skb_queue);
841 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
844 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
852 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
856 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
858 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
861 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
863 struct rx_buf *rx_buf = NULL;
864 struct sk_buff *skb = NULL;
865 struct urb *urb = NULL;
868 init_usb_anchor(&hif_dev->rx_submitted);
869 spin_lock_init(&hif_dev->rx_lock);
871 for (i = 0; i < MAX_RX_URB_NUM; i++) {
873 rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
880 urb = usb_alloc_urb(0, GFP_KERNEL);
886 /* Allocate buffer */
887 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
893 rx_buf->hif_dev = hif_dev;
896 usb_fill_bulk_urb(urb, hif_dev->udev,
897 usb_rcvbulkpipe(hif_dev->udev,
899 skb->data, MAX_RX_BUF_SIZE,
900 ath9k_hif_usb_rx_cb, rx_buf);
903 usb_anchor_urb(urb, &hif_dev->rx_submitted);
906 ret = usb_submit_urb(urb, GFP_KERNEL);
908 usb_unanchor_urb(urb);
913 * Drop reference count.
914 * This ensures that the URB is freed when killing them.
928 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
932 static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
934 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
937 static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
939 struct rx_buf *rx_buf = NULL;
940 struct sk_buff *skb = NULL;
941 struct urb *urb = NULL;
944 init_usb_anchor(&hif_dev->reg_in_submitted);
946 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
948 rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
955 urb = usb_alloc_urb(0, GFP_KERNEL);
961 /* Allocate buffer */
962 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
968 rx_buf->hif_dev = hif_dev;
971 usb_fill_int_urb(urb, hif_dev->udev,
972 usb_rcvintpipe(hif_dev->udev,
974 skb->data, MAX_REG_IN_BUF_SIZE,
975 ath9k_hif_usb_reg_in_cb, rx_buf, 1);
978 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
981 ret = usb_submit_urb(urb, GFP_KERNEL);
983 usb_unanchor_urb(urb);
988 * Drop reference count.
989 * This ensures that the URB is freed when killing them.
1003 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1007 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
1009 /* Register Write */
1010 init_usb_anchor(&hif_dev->regout_submitted);
1013 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
1017 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
1021 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
1026 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
1028 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
1033 void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
1035 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
1036 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1037 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
1038 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
1041 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
1044 const void *data = hif_dev->fw_data;
1045 size_t len = hif_dev->fw_size;
1046 u32 addr = AR9271_FIRMWARE;
1047 u8 *buf = kzalloc(4096, GFP_KERNEL);
1054 transfer = min_t(size_t, len, 4096);
1055 memcpy(buf, data, transfer);
1057 err = usb_control_msg(hif_dev->udev,
1058 usb_sndctrlpipe(hif_dev->udev, 0),
1059 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
1060 addr >> 8, 0, buf, transfer, HZ);
1072 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1073 firm_offset = AR7010_FIRMWARE_TEXT;
1075 firm_offset = AR9271_FIRMWARE_TEXT;
1078 * Issue FW download complete command to firmware.
1080 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1081 FIRMWARE_DOWNLOAD_COMP,
1083 firm_offset >> 8, 0, NULL, 0, HZ);
1087 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
1088 hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
1093 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
1097 ret = ath9k_hif_usb_download_fw(hif_dev);
1099 dev_err(&hif_dev->udev->dev,
1100 "ath9k_htc: Firmware - %s download failed\n",
1106 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1108 dev_err(&hif_dev->udev->dev,
1109 "ath9k_htc: Unable to allocate URBs\n");
1116 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1118 ath9k_hif_usb_dealloc_urbs(hif_dev);
1122 * If initialization fails or the FW cannot be retrieved,
1123 * detach the device.
1125 static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1127 struct device *dev = &hif_dev->udev->dev;
1128 struct device *parent = dev->parent;
1130 complete_all(&hif_dev->fw_done);
1133 device_lock(parent);
1135 device_release_driver(dev);
1138 device_unlock(parent);
1141 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context);
1143 /* taken from iwlwifi */
1144 static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev,
1147 char index[8], *chip;
1151 if (htc_use_dev_fw) {
1152 hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX + 1;
1153 sprintf(index, "%s", "dev");
1155 hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX;
1156 sprintf(index, "%d", hif_dev->fw_minor_index);
1159 hif_dev->fw_minor_index--;
1160 sprintf(index, "%d", hif_dev->fw_minor_index);
1163 /* test for FW 1.3 */
1164 if (MAJOR_VERSION_REQ == 1 && hif_dev->fw_minor_index == 3) {
1165 const char *filename;
1167 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1168 filename = FIRMWARE_AR7010_1_1;
1170 filename = FIRMWARE_AR9271;
1172 /* expected fw locations:
1173 * - htc_9271.fw (stable version 1.3, depricated)
1175 snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
1178 } else if (hif_dev->fw_minor_index < FIRMWARE_MINOR_IDX_MIN) {
1179 dev_err(&hif_dev->udev->dev, "no suitable firmware found!\n");
1183 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1188 /* expected fw locations:
1189 * - ath9k_htc/htc_9271-1.dev.0.fw (development version)
1190 * - ath9k_htc/htc_9271-1.4.0.fw (stable version)
1192 snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
1193 "%s/htc_%s-%d.%s.0.fw", HTC_FW_PATH,
1194 chip, MAJOR_VERSION_REQ, index);
1197 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1198 &hif_dev->udev->dev, GFP_KERNEL,
1199 hif_dev, ath9k_hif_usb_firmware_cb);
1201 dev_err(&hif_dev->udev->dev,
1202 "ath9k_htc: Async request for firmware %s failed\n",
1207 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1213 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1215 struct hif_device_usb *hif_dev = context;
1219 ret = ath9k_hif_request_firmware(hif_dev, false);
1223 dev_err(&hif_dev->udev->dev,
1224 "ath9k_htc: Failed to get firmware %s\n",
1229 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1230 &hif_dev->udev->dev);
1231 if (hif_dev->htc_handle == NULL)
1234 hif_dev->fw_data = fw->data;
1235 hif_dev->fw_size = fw->size;
1237 /* Proceed with initialization */
1239 ret = ath9k_hif_usb_dev_init(hif_dev);
1243 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1244 &hif_dev->interface->dev,
1245 hif_dev->usb_device_id->idProduct,
1246 hif_dev->udev->product,
1247 hif_dev->usb_device_id->driver_info);
1250 goto err_htc_hw_init;
1253 release_firmware(fw);
1254 hif_dev->flags |= HIF_USB_READY;
1255 complete_all(&hif_dev->fw_done);
1260 ath9k_hif_usb_dev_deinit(hif_dev);
1262 ath9k_htc_hw_free(hif_dev->htc_handle);
1264 release_firmware(fw);
1266 ath9k_hif_usb_firmware_fail(hif_dev);
1270 * An exact copy of the function from zd1211rw.
1272 static int send_eject_command(struct usb_interface *interface)
1274 struct usb_device *udev = interface_to_usbdev(interface);
1275 struct usb_host_interface *iface_desc = interface->cur_altsetting;
1276 struct usb_endpoint_descriptor *endpoint;
1281 if (iface_desc->desc.bNumEndpoints < 2)
1284 /* Find bulk out endpoint */
1285 for (r = 1; r >= 0; r--) {
1286 endpoint = &iface_desc->endpoint[r].desc;
1287 if (usb_endpoint_dir_out(endpoint) &&
1288 usb_endpoint_xfer_bulk(endpoint)) {
1289 bulk_out_ep = endpoint->bEndpointAddress;
1295 "ath9k_htc: Could not find bulk out endpoint\n");
1299 cmd = kzalloc(31, GFP_KERNEL);
1303 /* USB bulk command block */
1304 cmd[0] = 0x55; /* bulk command signature */
1305 cmd[1] = 0x53; /* bulk command signature */
1306 cmd[2] = 0x42; /* bulk command signature */
1307 cmd[3] = 0x43; /* bulk command signature */
1308 cmd[14] = 6; /* command length */
1310 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
1311 cmd[19] = 0x2; /* eject disc */
1313 dev_info(&udev->dev, "Ejecting storage device...\n");
1314 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1315 cmd, 31, NULL, 2000);
1320 /* At this point, the device disconnects and reconnects with the real
1323 usb_set_intfdata(interface, NULL);
1327 static int ath9k_hif_usb_probe(struct usb_interface *interface,
1328 const struct usb_device_id *id)
1330 struct usb_device *udev = interface_to_usbdev(interface);
1331 struct hif_device_usb *hif_dev;
1334 if (id->driver_info == STORAGE_DEVICE)
1335 return send_eject_command(interface);
1337 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1345 hif_dev->udev = udev;
1346 hif_dev->interface = interface;
1347 hif_dev->usb_device_id = id;
1349 udev->reset_resume = 1;
1351 usb_set_intfdata(interface, hif_dev);
1353 init_completion(&hif_dev->fw_done);
1355 ret = ath9k_hif_request_firmware(hif_dev, true);
1362 usb_set_intfdata(interface, NULL);
1369 static void ath9k_hif_usb_reboot(struct usb_device *udev)
1371 u32 reboot_cmd = 0xffffffff;
1375 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1379 ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE),
1382 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1387 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1389 struct usb_device *udev = interface_to_usbdev(interface);
1390 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1391 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
1396 wait_for_completion(&hif_dev->fw_done);
1398 if (hif_dev->flags & HIF_USB_READY) {
1399 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1400 ath9k_hif_usb_dev_deinit(hif_dev);
1401 ath9k_destoy_wmi(hif_dev->htc_handle->drv_priv);
1402 ath9k_htc_hw_free(hif_dev->htc_handle);
1405 usb_set_intfdata(interface, NULL);
1407 /* If firmware was loaded we should drop it
1408 * go back to first stage bootloader. */
1409 if (!unplugged && (hif_dev->flags & HIF_USB_READY))
1410 ath9k_hif_usb_reboot(udev);
1413 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1418 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1419 pm_message_t message)
1421 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1424 * The device has to be set to FULLSLEEP mode in case no
1427 if (!(hif_dev->flags & HIF_USB_START))
1428 ath9k_htc_suspend(hif_dev->htc_handle);
1430 wait_for_completion(&hif_dev->fw_done);
1432 if (hif_dev->flags & HIF_USB_READY)
1433 ath9k_hif_usb_dealloc_urbs(hif_dev);
1438 static int ath9k_hif_usb_resume(struct usb_interface *interface)
1440 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1441 struct htc_target *htc_handle = hif_dev->htc_handle;
1443 const struct firmware *fw;
1445 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1449 if (hif_dev->flags & HIF_USB_READY) {
1450 /* request cached firmware during suspend/resume cycle */
1451 ret = request_firmware(&fw, hif_dev->fw_name,
1452 &hif_dev->udev->dev);
1456 hif_dev->fw_data = fw->data;
1457 hif_dev->fw_size = fw->size;
1458 ret = ath9k_hif_usb_download_fw(hif_dev);
1459 release_firmware(fw);
1463 ath9k_hif_usb_dealloc_urbs(hif_dev);
1469 ret = ath9k_htc_resume(htc_handle);
1477 ath9k_hif_usb_dealloc_urbs(hif_dev);
1483 static struct usb_driver ath9k_hif_usb_driver = {
1484 .name = KBUILD_MODNAME,
1485 .probe = ath9k_hif_usb_probe,
1486 .disconnect = ath9k_hif_usb_disconnect,
1488 .suspend = ath9k_hif_usb_suspend,
1489 .resume = ath9k_hif_usb_resume,
1490 .reset_resume = ath9k_hif_usb_resume,
1492 .id_table = ath9k_hif_usb_ids,
1494 .disable_hub_initiated_lpm = 1,
1497 int ath9k_hif_usb_init(void)
1499 return usb_register(&ath9k_hif_usb_driver);
1502 void ath9k_hif_usb_exit(void)
1504 usb_deregister(&ath9k_hif_usb_driver);