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 pad_len = 4 - (pkt_len & 0x3);
596 index = index + 4 + pkt_len + pad_len;
598 if (index > MAX_RX_BUF_SIZE) {
599 spin_lock(&hif_dev->rx_lock);
600 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
601 hif_dev->rx_transfer_len =
602 MAX_RX_BUF_SIZE - chk_idx - 4;
603 hif_dev->rx_pad_len = pad_len;
605 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
607 dev_err(&hif_dev->udev->dev,
608 "ath9k_htc: RX memory allocation error\n");
609 spin_unlock(&hif_dev->rx_lock);
612 skb_reserve(nskb, 32);
613 RX_STAT_INC(skb_allocated);
615 memcpy(nskb->data, &(skb->data[chk_idx+4]),
616 hif_dev->rx_transfer_len);
618 /* Record the buffer pointer */
619 hif_dev->remain_skb = nskb;
620 spin_unlock(&hif_dev->rx_lock);
622 if (pool_index == MAX_PKT_NUM_IN_TRANSFER) {
623 dev_err(&hif_dev->udev->dev,
624 "ath9k_htc: over RX MAX_PKT_NUM\n");
627 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
629 dev_err(&hif_dev->udev->dev,
630 "ath9k_htc: RX memory allocation error\n");
633 skb_reserve(nskb, 32);
634 RX_STAT_INC(skb_allocated);
636 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
637 skb_put(nskb, pkt_len);
638 skb_pool[pool_index++] = nskb;
643 for (i = 0; i < pool_index; i++) {
644 RX_STAT_ADD(skb_completed_bytes, skb_pool[i]->len);
645 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
646 skb_pool[i]->len, USB_WLAN_RX_PIPE);
647 RX_STAT_INC(skb_completed);
651 static void ath9k_hif_usb_rx_cb(struct urb *urb)
653 struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
654 struct hif_device_usb *hif_dev = rx_buf->hif_dev;
655 struct sk_buff *skb = rx_buf->skb;
664 switch (urb->status) {
676 if (likely(urb->actual_length != 0)) {
677 skb_put(skb, urb->actual_length);
678 ath9k_hif_usb_rx_stream(hif_dev, skb);
682 skb_reset_tail_pointer(skb);
685 usb_anchor_urb(urb, &hif_dev->rx_submitted);
686 ret = usb_submit_urb(urb, GFP_ATOMIC);
688 usb_unanchor_urb(urb);
698 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
700 struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
701 struct hif_device_usb *hif_dev = rx_buf->hif_dev;
702 struct sk_buff *skb = rx_buf->skb;
703 struct sk_buff *nskb;
712 switch (urb->status) {
721 skb_reset_tail_pointer(skb);
727 if (likely(urb->actual_length != 0)) {
728 skb_put(skb, urb->actual_length);
730 /* Process the command first */
731 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
732 skb->len, USB_REG_IN_PIPE);
735 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
737 dev_err(&hif_dev->udev->dev,
738 "ath9k_htc: REG_IN memory allocation failure\n");
745 usb_fill_int_urb(urb, hif_dev->udev,
746 usb_rcvintpipe(hif_dev->udev,
748 nskb->data, MAX_REG_IN_BUF_SIZE,
749 ath9k_hif_usb_reg_in_cb, rx_buf, 1);
753 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
754 ret = usb_submit_urb(urb, GFP_ATOMIC);
756 usb_unanchor_urb(urb);
767 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
769 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
772 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
773 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
774 &hif_dev->tx.tx_buf, list) {
775 usb_get_urb(tx_buf->urb);
776 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
777 usb_kill_urb(tx_buf->urb);
778 list_del(&tx_buf->list);
779 usb_free_urb(tx_buf->urb);
782 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
784 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
786 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
787 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
788 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
790 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
791 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
792 &hif_dev->tx.tx_pending, list) {
793 usb_get_urb(tx_buf->urb);
794 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
795 usb_kill_urb(tx_buf->urb);
796 list_del(&tx_buf->list);
797 usb_free_urb(tx_buf->urb);
800 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
802 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
804 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
807 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
809 struct tx_buf *tx_buf;
812 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
813 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
814 spin_lock_init(&hif_dev->tx.tx_lock);
815 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
816 init_usb_anchor(&hif_dev->mgmt_submitted);
818 for (i = 0; i < MAX_TX_URB_NUM; i++) {
819 tx_buf = kzalloc(sizeof(*tx_buf), GFP_KERNEL);
823 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
827 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
831 tx_buf->hif_dev = hif_dev;
832 __skb_queue_head_init(&tx_buf->skb_queue);
834 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
837 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
845 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
849 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
851 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
854 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
856 struct rx_buf *rx_buf = NULL;
857 struct sk_buff *skb = NULL;
858 struct urb *urb = NULL;
861 init_usb_anchor(&hif_dev->rx_submitted);
862 spin_lock_init(&hif_dev->rx_lock);
864 for (i = 0; i < MAX_RX_URB_NUM; i++) {
866 rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
873 urb = usb_alloc_urb(0, GFP_KERNEL);
879 /* Allocate buffer */
880 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
886 rx_buf->hif_dev = hif_dev;
889 usb_fill_bulk_urb(urb, hif_dev->udev,
890 usb_rcvbulkpipe(hif_dev->udev,
892 skb->data, MAX_RX_BUF_SIZE,
893 ath9k_hif_usb_rx_cb, rx_buf);
896 usb_anchor_urb(urb, &hif_dev->rx_submitted);
899 ret = usb_submit_urb(urb, GFP_KERNEL);
901 usb_unanchor_urb(urb);
906 * Drop reference count.
907 * This ensures that the URB is freed when killing them.
921 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
925 static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
927 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
930 static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
932 struct rx_buf *rx_buf = NULL;
933 struct sk_buff *skb = NULL;
934 struct urb *urb = NULL;
937 init_usb_anchor(&hif_dev->reg_in_submitted);
939 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
941 rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
948 urb = usb_alloc_urb(0, GFP_KERNEL);
954 /* Allocate buffer */
955 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
961 rx_buf->hif_dev = hif_dev;
964 usb_fill_int_urb(urb, hif_dev->udev,
965 usb_rcvintpipe(hif_dev->udev,
967 skb->data, MAX_REG_IN_BUF_SIZE,
968 ath9k_hif_usb_reg_in_cb, rx_buf, 1);
971 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
974 ret = usb_submit_urb(urb, GFP_KERNEL);
976 usb_unanchor_urb(urb);
981 * Drop reference count.
982 * This ensures that the URB is freed when killing them.
996 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1000 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
1002 /* Register Write */
1003 init_usb_anchor(&hif_dev->regout_submitted);
1006 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
1010 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
1014 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
1019 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
1021 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
1026 void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
1028 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
1029 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1030 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
1031 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
1034 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
1037 const void *data = hif_dev->fw_data;
1038 size_t len = hif_dev->fw_size;
1039 u32 addr = AR9271_FIRMWARE;
1040 u8 *buf = kzalloc(4096, GFP_KERNEL);
1047 transfer = min_t(size_t, len, 4096);
1048 memcpy(buf, data, transfer);
1050 err = usb_control_msg(hif_dev->udev,
1051 usb_sndctrlpipe(hif_dev->udev, 0),
1052 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
1053 addr >> 8, 0, buf, transfer, HZ);
1065 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1066 firm_offset = AR7010_FIRMWARE_TEXT;
1068 firm_offset = AR9271_FIRMWARE_TEXT;
1071 * Issue FW download complete command to firmware.
1073 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1074 FIRMWARE_DOWNLOAD_COMP,
1076 firm_offset >> 8, 0, NULL, 0, HZ);
1080 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
1081 hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
1086 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
1090 ret = ath9k_hif_usb_download_fw(hif_dev);
1092 dev_err(&hif_dev->udev->dev,
1093 "ath9k_htc: Firmware - %s download failed\n",
1099 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1101 dev_err(&hif_dev->udev->dev,
1102 "ath9k_htc: Unable to allocate URBs\n");
1109 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1111 ath9k_hif_usb_dealloc_urbs(hif_dev);
1115 * If initialization fails or the FW cannot be retrieved,
1116 * detach the device.
1118 static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1120 struct device *dev = &hif_dev->udev->dev;
1121 struct device *parent = dev->parent;
1123 complete_all(&hif_dev->fw_done);
1126 device_lock(parent);
1128 device_release_driver(dev);
1131 device_unlock(parent);
1134 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context);
1136 /* taken from iwlwifi */
1137 static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev,
1140 char index[8], *chip;
1144 if (htc_use_dev_fw) {
1145 hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX + 1;
1146 sprintf(index, "%s", "dev");
1148 hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX;
1149 sprintf(index, "%d", hif_dev->fw_minor_index);
1152 hif_dev->fw_minor_index--;
1153 sprintf(index, "%d", hif_dev->fw_minor_index);
1156 /* test for FW 1.3 */
1157 if (MAJOR_VERSION_REQ == 1 && hif_dev->fw_minor_index == 3) {
1158 const char *filename;
1160 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1161 filename = FIRMWARE_AR7010_1_1;
1163 filename = FIRMWARE_AR9271;
1165 /* expected fw locations:
1166 * - htc_9271.fw (stable version 1.3, depricated)
1168 snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
1171 } else if (hif_dev->fw_minor_index < FIRMWARE_MINOR_IDX_MIN) {
1172 dev_err(&hif_dev->udev->dev, "no suitable firmware found!\n");
1176 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1181 /* expected fw locations:
1182 * - ath9k_htc/htc_9271-1.dev.0.fw (development version)
1183 * - ath9k_htc/htc_9271-1.4.0.fw (stable version)
1185 snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
1186 "%s/htc_%s-%d.%s.0.fw", HTC_FW_PATH,
1187 chip, MAJOR_VERSION_REQ, index);
1190 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1191 &hif_dev->udev->dev, GFP_KERNEL,
1192 hif_dev, ath9k_hif_usb_firmware_cb);
1194 dev_err(&hif_dev->udev->dev,
1195 "ath9k_htc: Async request for firmware %s failed\n",
1200 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1206 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1208 struct hif_device_usb *hif_dev = context;
1212 ret = ath9k_hif_request_firmware(hif_dev, false);
1216 dev_err(&hif_dev->udev->dev,
1217 "ath9k_htc: Failed to get firmware %s\n",
1222 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1223 &hif_dev->udev->dev);
1224 if (hif_dev->htc_handle == NULL)
1227 hif_dev->fw_data = fw->data;
1228 hif_dev->fw_size = fw->size;
1230 /* Proceed with initialization */
1232 ret = ath9k_hif_usb_dev_init(hif_dev);
1236 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1237 &hif_dev->interface->dev,
1238 hif_dev->usb_device_id->idProduct,
1239 hif_dev->udev->product,
1240 hif_dev->usb_device_id->driver_info);
1243 goto err_htc_hw_init;
1246 release_firmware(fw);
1247 hif_dev->flags |= HIF_USB_READY;
1248 complete_all(&hif_dev->fw_done);
1253 ath9k_hif_usb_dev_deinit(hif_dev);
1255 ath9k_htc_hw_free(hif_dev->htc_handle);
1257 release_firmware(fw);
1259 ath9k_hif_usb_firmware_fail(hif_dev);
1263 * An exact copy of the function from zd1211rw.
1265 static int send_eject_command(struct usb_interface *interface)
1267 struct usb_device *udev = interface_to_usbdev(interface);
1268 struct usb_host_interface *iface_desc = interface->cur_altsetting;
1269 struct usb_endpoint_descriptor *endpoint;
1274 if (iface_desc->desc.bNumEndpoints < 2)
1277 /* Find bulk out endpoint */
1278 for (r = 1; r >= 0; r--) {
1279 endpoint = &iface_desc->endpoint[r].desc;
1280 if (usb_endpoint_dir_out(endpoint) &&
1281 usb_endpoint_xfer_bulk(endpoint)) {
1282 bulk_out_ep = endpoint->bEndpointAddress;
1288 "ath9k_htc: Could not find bulk out endpoint\n");
1292 cmd = kzalloc(31, GFP_KERNEL);
1296 /* USB bulk command block */
1297 cmd[0] = 0x55; /* bulk command signature */
1298 cmd[1] = 0x53; /* bulk command signature */
1299 cmd[2] = 0x42; /* bulk command signature */
1300 cmd[3] = 0x43; /* bulk command signature */
1301 cmd[14] = 6; /* command length */
1303 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
1304 cmd[19] = 0x2; /* eject disc */
1306 dev_info(&udev->dev, "Ejecting storage device...\n");
1307 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1308 cmd, 31, NULL, 2000);
1313 /* At this point, the device disconnects and reconnects with the real
1316 usb_set_intfdata(interface, NULL);
1320 static int ath9k_hif_usb_probe(struct usb_interface *interface,
1321 const struct usb_device_id *id)
1323 struct usb_device *udev = interface_to_usbdev(interface);
1324 struct hif_device_usb *hif_dev;
1327 if (id->driver_info == STORAGE_DEVICE)
1328 return send_eject_command(interface);
1330 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1338 hif_dev->udev = udev;
1339 hif_dev->interface = interface;
1340 hif_dev->usb_device_id = id;
1342 udev->reset_resume = 1;
1344 usb_set_intfdata(interface, hif_dev);
1346 init_completion(&hif_dev->fw_done);
1348 ret = ath9k_hif_request_firmware(hif_dev, true);
1355 usb_set_intfdata(interface, NULL);
1362 static void ath9k_hif_usb_reboot(struct usb_device *udev)
1364 u32 reboot_cmd = 0xffffffff;
1368 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1372 ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE),
1375 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1380 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1382 struct usb_device *udev = interface_to_usbdev(interface);
1383 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1384 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
1389 wait_for_completion(&hif_dev->fw_done);
1391 if (hif_dev->flags & HIF_USB_READY) {
1392 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1393 ath9k_hif_usb_dev_deinit(hif_dev);
1394 ath9k_destoy_wmi(hif_dev->htc_handle->drv_priv);
1395 ath9k_htc_hw_free(hif_dev->htc_handle);
1398 usb_set_intfdata(interface, NULL);
1400 /* If firmware was loaded we should drop it
1401 * go back to first stage bootloader. */
1402 if (!unplugged && (hif_dev->flags & HIF_USB_READY))
1403 ath9k_hif_usb_reboot(udev);
1406 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1411 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1412 pm_message_t message)
1414 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1417 * The device has to be set to FULLSLEEP mode in case no
1420 if (!(hif_dev->flags & HIF_USB_START))
1421 ath9k_htc_suspend(hif_dev->htc_handle);
1423 wait_for_completion(&hif_dev->fw_done);
1425 if (hif_dev->flags & HIF_USB_READY)
1426 ath9k_hif_usb_dealloc_urbs(hif_dev);
1431 static int ath9k_hif_usb_resume(struct usb_interface *interface)
1433 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1434 struct htc_target *htc_handle = hif_dev->htc_handle;
1436 const struct firmware *fw;
1438 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1442 if (hif_dev->flags & HIF_USB_READY) {
1443 /* request cached firmware during suspend/resume cycle */
1444 ret = request_firmware(&fw, hif_dev->fw_name,
1445 &hif_dev->udev->dev);
1449 hif_dev->fw_data = fw->data;
1450 hif_dev->fw_size = fw->size;
1451 ret = ath9k_hif_usb_download_fw(hif_dev);
1452 release_firmware(fw);
1456 ath9k_hif_usb_dealloc_urbs(hif_dev);
1462 ret = ath9k_htc_resume(htc_handle);
1470 ath9k_hif_usb_dealloc_urbs(hif_dev);
1476 static struct usb_driver ath9k_hif_usb_driver = {
1477 .name = KBUILD_MODNAME,
1478 .probe = ath9k_hif_usb_probe,
1479 .disconnect = ath9k_hif_usb_disconnect,
1481 .suspend = ath9k_hif_usb_suspend,
1482 .resume = ath9k_hif_usb_resume,
1483 .reset_resume = ath9k_hif_usb_resume,
1485 .id_table = ath9k_hif_usb_ids,
1487 .disable_hub_initiated_lpm = 1,
1490 int ath9k_hif_usb_init(void)
1492 return usb_register(&ath9k_hif_usb_driver);
1495 void ath9k_hif_usb_exit(void)
1497 usb_deregister(&ath9k_hif_usb_driver);