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(0x0411, 0x0197),
58 .driver_info = AR9280_USB }, /* Buffalo WLI-UV-AG300P */
59 { USB_DEVICE(0x04da, 0x3904),
60 .driver_info = AR9280_USB },
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 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
451 &hif_dev->tx.tx_pending, list) {
452 usb_kill_urb(tx_buf->urb);
455 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
458 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
460 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
464 case USB_WLAN_TX_PIPE:
465 ret = hif_usb_send_tx(hif_dev, skb);
467 case USB_REG_OUT_PIPE:
468 ret = hif_usb_send_regout(hif_dev, skb);
471 dev_err(&hif_dev->udev->dev,
472 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
480 static inline bool check_index(struct sk_buff *skb, u8 idx)
482 struct ath9k_htc_tx_ctl *tx_ctl;
484 tx_ctl = HTC_SKB_CB(skb);
486 if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
487 (tx_ctl->sta_idx == idx))
493 static void hif_usb_sta_drain(void *hif_handle, u8 idx)
495 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
496 struct sk_buff *skb, *tmp;
499 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
501 skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
502 if (check_index(skb, idx)) {
503 __skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
504 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
506 hif_dev->tx.tx_skb_cnt--;
507 TX_STAT_INC(skb_failed);
511 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
514 static struct ath9k_htc_hif hif_usb = {
515 .transport = ATH9K_HIF_USB,
516 .name = "ath9k_hif_usb",
518 .control_ul_pipe = USB_REG_OUT_PIPE,
519 .control_dl_pipe = USB_REG_IN_PIPE,
521 .start = hif_usb_start,
522 .stop = hif_usb_stop,
523 .sta_drain = hif_usb_sta_drain,
524 .send = hif_usb_send,
527 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
530 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
531 int index = 0, i = 0, len = skb->len;
532 int rx_remain_len, rx_pkt_len;
536 spin_lock(&hif_dev->rx_lock);
538 rx_remain_len = hif_dev->rx_remain_len;
539 rx_pkt_len = hif_dev->rx_transfer_len;
541 if (rx_remain_len != 0) {
542 struct sk_buff *remain_skb = hif_dev->remain_skb;
545 ptr = (u8 *) remain_skb->data;
547 index = rx_remain_len;
548 rx_remain_len -= hif_dev->rx_pad_len;
551 memcpy(ptr, skb->data, rx_remain_len);
553 rx_pkt_len += rx_remain_len;
554 hif_dev->rx_remain_len = 0;
555 skb_put(remain_skb, rx_pkt_len);
557 skb_pool[pool_index++] = remain_skb;
560 index = rx_remain_len;
564 spin_unlock(&hif_dev->rx_lock);
566 while (index < len) {
572 ptr = (u8 *) skb->data;
574 pkt_len = get_unaligned_le16(ptr + index);
575 pkt_tag = get_unaligned_le16(ptr + index + 2);
577 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
578 RX_STAT_INC(skb_dropped);
582 pad_len = 4 - (pkt_len & 0x3);
587 index = index + 4 + pkt_len + pad_len;
589 if (index > MAX_RX_BUF_SIZE) {
590 spin_lock(&hif_dev->rx_lock);
591 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
592 hif_dev->rx_transfer_len =
593 MAX_RX_BUF_SIZE - chk_idx - 4;
594 hif_dev->rx_pad_len = pad_len;
596 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
598 dev_err(&hif_dev->udev->dev,
599 "ath9k_htc: RX memory allocation error\n");
600 spin_unlock(&hif_dev->rx_lock);
603 skb_reserve(nskb, 32);
604 RX_STAT_INC(skb_allocated);
606 memcpy(nskb->data, &(skb->data[chk_idx+4]),
607 hif_dev->rx_transfer_len);
609 /* Record the buffer pointer */
610 hif_dev->remain_skb = nskb;
611 spin_unlock(&hif_dev->rx_lock);
613 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
615 dev_err(&hif_dev->udev->dev,
616 "ath9k_htc: RX memory allocation error\n");
619 skb_reserve(nskb, 32);
620 RX_STAT_INC(skb_allocated);
622 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
623 skb_put(nskb, pkt_len);
624 skb_pool[pool_index++] = nskb;
629 for (i = 0; i < pool_index; i++) {
630 RX_STAT_ADD(skb_completed_bytes, skb_pool[i]->len);
631 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
632 skb_pool[i]->len, USB_WLAN_RX_PIPE);
633 RX_STAT_INC(skb_completed);
637 static void ath9k_hif_usb_rx_cb(struct urb *urb)
639 struct sk_buff *skb = (struct sk_buff *) urb->context;
640 struct hif_device_usb *hif_dev =
641 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
650 switch (urb->status) {
662 if (likely(urb->actual_length != 0)) {
663 skb_put(skb, urb->actual_length);
664 ath9k_hif_usb_rx_stream(hif_dev, skb);
668 skb_reset_tail_pointer(skb);
671 usb_anchor_urb(urb, &hif_dev->rx_submitted);
672 ret = usb_submit_urb(urb, GFP_ATOMIC);
674 usb_unanchor_urb(urb);
683 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
685 struct sk_buff *skb = (struct sk_buff *) urb->context;
686 struct sk_buff *nskb;
687 struct hif_device_usb *hif_dev =
688 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
697 switch (urb->status) {
706 skb_reset_tail_pointer(skb);
712 if (likely(urb->actual_length != 0)) {
713 skb_put(skb, urb->actual_length);
715 /* Process the command first */
716 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
717 skb->len, USB_REG_IN_PIPE);
720 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
722 dev_err(&hif_dev->udev->dev,
723 "ath9k_htc: REG_IN memory allocation failure\n");
728 usb_fill_int_urb(urb, hif_dev->udev,
729 usb_rcvintpipe(hif_dev->udev,
731 nskb->data, MAX_REG_IN_BUF_SIZE,
732 ath9k_hif_usb_reg_in_cb, nskb, 1);
736 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
737 ret = usb_submit_urb(urb, GFP_ATOMIC);
739 usb_unanchor_urb(urb);
749 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
751 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
754 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
755 &hif_dev->tx.tx_buf, list) {
756 usb_kill_urb(tx_buf->urb);
757 list_del(&tx_buf->list);
758 usb_free_urb(tx_buf->urb);
763 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
764 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
765 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
767 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
768 &hif_dev->tx.tx_pending, list) {
769 usb_kill_urb(tx_buf->urb);
770 list_del(&tx_buf->list);
771 usb_free_urb(tx_buf->urb);
776 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
779 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
781 struct tx_buf *tx_buf;
784 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
785 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
786 spin_lock_init(&hif_dev->tx.tx_lock);
787 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
788 init_usb_anchor(&hif_dev->mgmt_submitted);
790 for (i = 0; i < MAX_TX_URB_NUM; i++) {
791 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
795 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
799 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
803 tx_buf->hif_dev = hif_dev;
804 __skb_queue_head_init(&tx_buf->skb_queue);
806 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
809 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
817 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
821 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
823 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
826 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
828 struct urb *urb = NULL;
829 struct sk_buff *skb = NULL;
832 init_usb_anchor(&hif_dev->rx_submitted);
833 spin_lock_init(&hif_dev->rx_lock);
835 for (i = 0; i < MAX_RX_URB_NUM; i++) {
838 urb = usb_alloc_urb(0, GFP_KERNEL);
844 /* Allocate buffer */
845 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
851 usb_fill_bulk_urb(urb, hif_dev->udev,
852 usb_rcvbulkpipe(hif_dev->udev,
854 skb->data, MAX_RX_BUF_SIZE,
855 ath9k_hif_usb_rx_cb, skb);
858 usb_anchor_urb(urb, &hif_dev->rx_submitted);
861 ret = usb_submit_urb(urb, GFP_KERNEL);
863 usb_unanchor_urb(urb);
868 * Drop reference count.
869 * This ensures that the URB is freed when killing them.
881 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
885 static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
887 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
890 static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
892 struct urb *urb = NULL;
893 struct sk_buff *skb = NULL;
896 init_usb_anchor(&hif_dev->reg_in_submitted);
898 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
901 urb = usb_alloc_urb(0, GFP_KERNEL);
907 /* Allocate buffer */
908 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
914 usb_fill_int_urb(urb, hif_dev->udev,
915 usb_rcvintpipe(hif_dev->udev,
917 skb->data, MAX_REG_IN_BUF_SIZE,
918 ath9k_hif_usb_reg_in_cb, skb, 1);
921 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
924 ret = usb_submit_urb(urb, GFP_KERNEL);
926 usb_unanchor_urb(urb);
931 * Drop reference count.
932 * This ensures that the URB is freed when killing them.
944 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
948 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
951 init_usb_anchor(&hif_dev->regout_submitted);
954 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
958 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
962 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
967 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
969 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
974 static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
976 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
977 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
978 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
979 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
982 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
985 const void *data = hif_dev->fw_data;
986 size_t len = hif_dev->fw_size;
987 u32 addr = AR9271_FIRMWARE;
988 u8 *buf = kzalloc(4096, GFP_KERNEL);
995 transfer = min_t(size_t, len, 4096);
996 memcpy(buf, data, transfer);
998 err = usb_control_msg(hif_dev->udev,
999 usb_sndctrlpipe(hif_dev->udev, 0),
1000 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
1001 addr >> 8, 0, buf, transfer, HZ);
1013 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1014 firm_offset = AR7010_FIRMWARE_TEXT;
1016 firm_offset = AR9271_FIRMWARE_TEXT;
1019 * Issue FW download complete command to firmware.
1021 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1022 FIRMWARE_DOWNLOAD_COMP,
1024 firm_offset >> 8, 0, NULL, 0, HZ);
1028 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
1029 hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
1034 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
1038 ret = ath9k_hif_usb_download_fw(hif_dev);
1040 dev_err(&hif_dev->udev->dev,
1041 "ath9k_htc: Firmware - %s download failed\n",
1047 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1049 dev_err(&hif_dev->udev->dev,
1050 "ath9k_htc: Unable to allocate URBs\n");
1057 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1059 ath9k_hif_usb_dealloc_urbs(hif_dev);
1063 * If initialization fails or the FW cannot be retrieved,
1064 * detach the device.
1066 static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1068 struct device *dev = &hif_dev->udev->dev;
1069 struct device *parent = dev->parent;
1071 complete_all(&hif_dev->fw_done);
1074 device_lock(parent);
1076 device_release_driver(dev);
1079 device_unlock(parent);
1082 static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1084 struct hif_device_usb *hif_dev = context;
1088 dev_err(&hif_dev->udev->dev,
1089 "ath9k_htc: Failed to get firmware %s\n",
1094 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1095 &hif_dev->udev->dev);
1096 if (hif_dev->htc_handle == NULL)
1099 hif_dev->fw_data = fw->data;
1100 hif_dev->fw_size = fw->size;
1102 /* Proceed with initialization */
1104 ret = ath9k_hif_usb_dev_init(hif_dev);
1108 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1109 &hif_dev->interface->dev,
1110 hif_dev->usb_device_id->idProduct,
1111 hif_dev->udev->product,
1112 hif_dev->usb_device_id->driver_info);
1115 goto err_htc_hw_init;
1118 release_firmware(fw);
1119 hif_dev->flags |= HIF_USB_READY;
1120 complete_all(&hif_dev->fw_done);
1125 ath9k_hif_usb_dev_deinit(hif_dev);
1127 ath9k_htc_hw_free(hif_dev->htc_handle);
1129 release_firmware(fw);
1131 ath9k_hif_usb_firmware_fail(hif_dev);
1135 * An exact copy of the function from zd1211rw.
1137 static int send_eject_command(struct usb_interface *interface)
1139 struct usb_device *udev = interface_to_usbdev(interface);
1140 struct usb_host_interface *iface_desc = &interface->altsetting[0];
1141 struct usb_endpoint_descriptor *endpoint;
1146 /* Find bulk out endpoint */
1147 for (r = 1; r >= 0; r--) {
1148 endpoint = &iface_desc->endpoint[r].desc;
1149 if (usb_endpoint_dir_out(endpoint) &&
1150 usb_endpoint_xfer_bulk(endpoint)) {
1151 bulk_out_ep = endpoint->bEndpointAddress;
1157 "ath9k_htc: Could not find bulk out endpoint\n");
1161 cmd = kzalloc(31, GFP_KERNEL);
1165 /* USB bulk command block */
1166 cmd[0] = 0x55; /* bulk command signature */
1167 cmd[1] = 0x53; /* bulk command signature */
1168 cmd[2] = 0x42; /* bulk command signature */
1169 cmd[3] = 0x43; /* bulk command signature */
1170 cmd[14] = 6; /* command length */
1172 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
1173 cmd[19] = 0x2; /* eject disc */
1175 dev_info(&udev->dev, "Ejecting storage device...\n");
1176 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1177 cmd, 31, NULL, 2000);
1182 /* At this point, the device disconnects and reconnects with the real
1185 usb_set_intfdata(interface, NULL);
1189 static int ath9k_hif_usb_probe(struct usb_interface *interface,
1190 const struct usb_device_id *id)
1192 struct usb_device *udev = interface_to_usbdev(interface);
1193 struct hif_device_usb *hif_dev;
1196 if (id->driver_info == STORAGE_DEVICE)
1197 return send_eject_command(interface);
1199 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1207 hif_dev->udev = udev;
1208 hif_dev->interface = interface;
1209 hif_dev->usb_device_id = id;
1211 udev->reset_resume = 1;
1213 usb_set_intfdata(interface, hif_dev);
1215 init_completion(&hif_dev->fw_done);
1217 /* Find out which firmware to load */
1219 if (IS_AR7010_DEVICE(id->driver_info))
1220 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
1222 hif_dev->fw_name = FIRMWARE_AR9271;
1224 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1225 &hif_dev->udev->dev, GFP_KERNEL,
1226 hif_dev, ath9k_hif_usb_firmware_cb);
1228 dev_err(&hif_dev->udev->dev,
1229 "ath9k_htc: Async request for firmware %s failed\n",
1234 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1240 usb_set_intfdata(interface, NULL);
1247 static void ath9k_hif_usb_reboot(struct usb_device *udev)
1249 u32 reboot_cmd = 0xffffffff;
1253 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1257 ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE),
1260 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1265 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1267 struct usb_device *udev = interface_to_usbdev(interface);
1268 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1269 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
1274 wait_for_completion(&hif_dev->fw_done);
1276 if (hif_dev->flags & HIF_USB_READY) {
1277 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1278 ath9k_htc_hw_free(hif_dev->htc_handle);
1279 ath9k_hif_usb_dev_deinit(hif_dev);
1282 usb_set_intfdata(interface, NULL);
1284 /* If firmware was loaded we should drop it
1285 * go back to first stage bootloader. */
1286 if (!unplugged && (hif_dev->flags & HIF_USB_READY))
1287 ath9k_hif_usb_reboot(udev);
1290 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1295 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1296 pm_message_t message)
1298 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1301 * The device has to be set to FULLSLEEP mode in case no
1304 if (!(hif_dev->flags & HIF_USB_START))
1305 ath9k_htc_suspend(hif_dev->htc_handle);
1307 wait_for_completion(&hif_dev->fw_done);
1309 if (hif_dev->flags & HIF_USB_READY)
1310 ath9k_hif_usb_dealloc_urbs(hif_dev);
1315 static int ath9k_hif_usb_resume(struct usb_interface *interface)
1317 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1318 struct htc_target *htc_handle = hif_dev->htc_handle;
1320 const struct firmware *fw;
1322 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1326 if (hif_dev->flags & HIF_USB_READY) {
1327 /* request cached firmware during suspend/resume cycle */
1328 ret = request_firmware(&fw, hif_dev->fw_name,
1329 &hif_dev->udev->dev);
1333 hif_dev->fw_data = fw->data;
1334 hif_dev->fw_size = fw->size;
1335 ret = ath9k_hif_usb_download_fw(hif_dev);
1336 release_firmware(fw);
1340 ath9k_hif_usb_dealloc_urbs(hif_dev);
1346 ret = ath9k_htc_resume(htc_handle);
1354 ath9k_hif_usb_dealloc_urbs(hif_dev);
1360 static struct usb_driver ath9k_hif_usb_driver = {
1361 .name = KBUILD_MODNAME,
1362 .probe = ath9k_hif_usb_probe,
1363 .disconnect = ath9k_hif_usb_disconnect,
1365 .suspend = ath9k_hif_usb_suspend,
1366 .resume = ath9k_hif_usb_resume,
1367 .reset_resume = ath9k_hif_usb_resume,
1369 .id_table = ath9k_hif_usb_ids,
1371 .disable_hub_initiated_lpm = 1,
1374 int ath9k_hif_usb_init(void)
1376 return usb_register(&ath9k_hif_usb_driver);
1379 void ath9k_hif_usb_exit(void)
1381 usb_deregister(&ath9k_hif_usb_driver);