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17#include <asm/unaligned.h>
18#include "htc.h"
19
20MODULE_FIRMWARE(HTC_7010_MODULE_FW);
21MODULE_FIRMWARE(HTC_9271_MODULE_FW);
22
23static const struct usb_device_id ath9k_hif_usb_ids[] = {
24 { USB_DEVICE(0x0cf3, 0x9271) },
25 { USB_DEVICE(0x0cf3, 0x1006) },
26 { USB_DEVICE(0x0846, 0x9030) },
27 { USB_DEVICE(0x07b8, 0x9271) },
28 { USB_DEVICE(0x07D1, 0x3A10) },
29 { USB_DEVICE(0x13D3, 0x3327) },
30 { USB_DEVICE(0x13D3, 0x3328) },
31 { USB_DEVICE(0x13D3, 0x3346) },
32 { USB_DEVICE(0x13D3, 0x3348) },
33 { USB_DEVICE(0x13D3, 0x3349) },
34 { USB_DEVICE(0x13D3, 0x3350) },
35 { USB_DEVICE(0x04CA, 0x4605) },
36 { USB_DEVICE(0x040D, 0x3801) },
37 { USB_DEVICE(0x0cf3, 0xb003) },
38 { USB_DEVICE(0x0cf3, 0xb002) },
39 { USB_DEVICE(0x057c, 0x8403) },
40 { USB_DEVICE(0x0471, 0x209e) },
41 { USB_DEVICE(0x1eda, 0x2315) },
42
43 { USB_DEVICE(0x0cf3, 0x7015),
44 .driver_info = AR9287_USB },
45 { USB_DEVICE(0x1668, 0x1200),
46 .driver_info = AR9287_USB },
47
48 { USB_DEVICE(0x0cf3, 0x7010),
49 .driver_info = AR9280_USB },
50 { USB_DEVICE(0x0846, 0x9018),
51 .driver_info = AR9280_USB },
52 { USB_DEVICE(0x083A, 0xA704),
53 .driver_info = AR9280_USB },
54 { USB_DEVICE(0x0411, 0x017f),
55 .driver_info = AR9280_USB },
56 { USB_DEVICE(0x0411, 0x0197),
57 .driver_info = AR9280_USB },
58 { USB_DEVICE(0x04da, 0x3904),
59 .driver_info = AR9280_USB },
60 { USB_DEVICE(0x0930, 0x0a08),
61 .driver_info = AR9280_USB },
62
63 { USB_DEVICE(0x0cf3, 0x20ff),
64 .driver_info = STORAGE_DEVICE },
65
66 { },
67};
68
69MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
70
71static int __hif_usb_tx(struct hif_device_usb *hif_dev);
72
73static void hif_usb_regout_cb(struct urb *urb)
74{
75 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
76
77 switch (urb->status) {
78 case 0:
79 break;
80 case -ENOENT:
81 case -ECONNRESET:
82 case -ENODEV:
83 case -ESHUTDOWN:
84 goto free;
85 default:
86 break;
87 }
88
89 if (cmd) {
90 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
91 cmd->skb, true);
92 kfree(cmd);
93 }
94
95 return;
96free:
97 kfree_skb(cmd->skb);
98 kfree(cmd);
99}
100
101static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
102 struct sk_buff *skb)
103{
104 struct urb *urb;
105 struct cmd_buf *cmd;
106 int ret = 0;
107
108 urb = usb_alloc_urb(0, GFP_KERNEL);
109 if (urb == NULL)
110 return -ENOMEM;
111
112 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
113 if (cmd == NULL) {
114 usb_free_urb(urb);
115 return -ENOMEM;
116 }
117
118 cmd->skb = skb;
119 cmd->hif_dev = hif_dev;
120
121 usb_fill_int_urb(urb, hif_dev->udev,
122 usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
123 skb->data, skb->len,
124 hif_usb_regout_cb, cmd, 1);
125
126 usb_anchor_urb(urb, &hif_dev->regout_submitted);
127 ret = usb_submit_urb(urb, GFP_KERNEL);
128 if (ret) {
129 usb_unanchor_urb(urb);
130 kfree(cmd);
131 }
132 usb_free_urb(urb);
133
134 return ret;
135}
136
137static void hif_usb_mgmt_cb(struct urb *urb)
138{
139 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
140 struct hif_device_usb *hif_dev;
141 unsigned long flags;
142 bool txok = true;
143
144 if (!cmd || !cmd->skb || !cmd->hif_dev)
145 return;
146
147 hif_dev = cmd->hif_dev;
148
149 switch (urb->status) {
150 case 0:
151 break;
152 case -ENOENT:
153 case -ECONNRESET:
154 case -ENODEV:
155 case -ESHUTDOWN:
156 txok = false;
157
158
159
160
161
162 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
163 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
164 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
165 dev_kfree_skb_any(cmd->skb);
166 kfree(cmd);
167 return;
168 }
169 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
170
171 break;
172 default:
173 txok = false;
174 break;
175 }
176
177 skb_pull(cmd->skb, 4);
178 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
179 cmd->skb, txok);
180 kfree(cmd);
181}
182
183static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev,
184 struct sk_buff *skb)
185{
186 struct urb *urb;
187 struct cmd_buf *cmd;
188 int ret = 0;
189 __le16 *hdr;
190
191 urb = usb_alloc_urb(0, GFP_ATOMIC);
192 if (urb == NULL)
193 return -ENOMEM;
194
195 cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
196 if (cmd == NULL) {
197 usb_free_urb(urb);
198 return -ENOMEM;
199 }
200
201 cmd->skb = skb;
202 cmd->hif_dev = hif_dev;
203
204 hdr = skb_push(skb, 4);
205 *hdr++ = cpu_to_le16(skb->len - 4);
206 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
207
208 usb_fill_bulk_urb(urb, hif_dev->udev,
209 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
210 skb->data, skb->len,
211 hif_usb_mgmt_cb, cmd);
212
213 usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
214 ret = usb_submit_urb(urb, GFP_ATOMIC);
215 if (ret) {
216 usb_unanchor_urb(urb);
217 kfree(cmd);
218 }
219 usb_free_urb(urb);
220
221 return ret;
222}
223
224static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
225 struct sk_buff_head *list)
226{
227 struct sk_buff *skb;
228
229 while ((skb = __skb_dequeue(list)) != NULL) {
230 dev_kfree_skb_any(skb);
231 }
232}
233
234static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
235 struct sk_buff_head *queue,
236 bool txok)
237{
238 struct sk_buff *skb;
239
240 while ((skb = __skb_dequeue(queue)) != NULL) {
241#ifdef CONFIG_ATH9K_HTC_DEBUGFS
242 int ln = skb->len;
243#endif
244 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
245 skb, txok);
246 if (txok) {
247 TX_STAT_INC(skb_success);
248 TX_STAT_ADD(skb_success_bytes, ln);
249 }
250 else
251 TX_STAT_INC(skb_failed);
252 }
253}
254
255static void hif_usb_tx_cb(struct urb *urb)
256{
257 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
258 struct hif_device_usb *hif_dev;
259 bool txok = true;
260
261 if (!tx_buf || !tx_buf->hif_dev)
262 return;
263
264 hif_dev = tx_buf->hif_dev;
265
266 switch (urb->status) {
267 case 0:
268 break;
269 case -ENOENT:
270 case -ECONNRESET:
271 case -ENODEV:
272 case -ESHUTDOWN:
273 txok = false;
274
275
276
277
278
279 spin_lock(&hif_dev->tx.tx_lock);
280 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
281 spin_unlock(&hif_dev->tx.tx_lock);
282 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
283 return;
284 }
285 spin_unlock(&hif_dev->tx.tx_lock);
286
287 break;
288 default:
289 txok = false;
290 break;
291 }
292
293 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
294
295
296 tx_buf->len = tx_buf->offset = 0;
297 __skb_queue_head_init(&tx_buf->skb_queue);
298
299
300 spin_lock(&hif_dev->tx.tx_lock);
301 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
302 hif_dev->tx.tx_buf_cnt++;
303 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
304 __hif_usb_tx(hif_dev);
305 TX_STAT_INC(buf_completed);
306 spin_unlock(&hif_dev->tx.tx_lock);
307}
308
309
310static int __hif_usb_tx(struct hif_device_usb *hif_dev)
311{
312 struct tx_buf *tx_buf = NULL;
313 struct sk_buff *nskb = NULL;
314 int ret = 0, i;
315 u16 tx_skb_cnt = 0;
316 u8 *buf;
317 __le16 *hdr;
318
319 if (hif_dev->tx.tx_skb_cnt == 0)
320 return 0;
321
322
323 if (list_empty(&hif_dev->tx.tx_buf))
324 return 0;
325
326 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
327 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
328 hif_dev->tx.tx_buf_cnt--;
329
330 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
331
332 for (i = 0; i < tx_skb_cnt; i++) {
333 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
334
335
336 BUG_ON(!nskb);
337
338 hif_dev->tx.tx_skb_cnt--;
339
340 buf = tx_buf->buf;
341 buf += tx_buf->offset;
342 hdr = (__le16 *)buf;
343 *hdr++ = cpu_to_le16(nskb->len);
344 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
345 buf += 4;
346 memcpy(buf, nskb->data, nskb->len);
347 tx_buf->len = nskb->len + 4;
348
349 if (i < (tx_skb_cnt - 1))
350 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
351
352 if (i == (tx_skb_cnt - 1))
353 tx_buf->len += tx_buf->offset;
354
355 __skb_queue_tail(&tx_buf->skb_queue, nskb);
356 TX_STAT_INC(skb_queued);
357 }
358
359 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
360 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
361 tx_buf->buf, tx_buf->len,
362 hif_usb_tx_cb, tx_buf);
363
364 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
365 if (ret) {
366 tx_buf->len = tx_buf->offset = 0;
367 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false);
368 __skb_queue_head_init(&tx_buf->skb_queue);
369 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
370 hif_dev->tx.tx_buf_cnt++;
371 }
372
373 if (!ret)
374 TX_STAT_INC(buf_queued);
375
376 return ret;
377}
378
379static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
380{
381 struct ath9k_htc_tx_ctl *tx_ctl;
382 unsigned long flags;
383 int ret = 0;
384
385 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
386
387 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
388 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
389 return -ENODEV;
390 }
391
392
393 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
394 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
395 return -ENOMEM;
396 }
397
398 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
399
400 tx_ctl = HTC_SKB_CB(skb);
401
402
403 if ((tx_ctl->type == ATH9K_HTC_MGMT) ||
404 (tx_ctl->type == ATH9K_HTC_BEACON)) {
405 ret = hif_usb_send_mgmt(hif_dev, skb);
406 }
407
408 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
409
410 if ((tx_ctl->type == ATH9K_HTC_NORMAL) ||
411 (tx_ctl->type == ATH9K_HTC_AMPDU)) {
412 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
413 hif_dev->tx.tx_skb_cnt++;
414 }
415
416
417 if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
418 (hif_dev->tx.tx_skb_cnt < 2)) {
419 __hif_usb_tx(hif_dev);
420 }
421
422 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
423
424 return ret;
425}
426
427static void hif_usb_start(void *hif_handle)
428{
429 struct hif_device_usb *hif_dev = hif_handle;
430 unsigned long flags;
431
432 hif_dev->flags |= HIF_USB_START;
433
434 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
435 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
436 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
437}
438
439static void hif_usb_stop(void *hif_handle)
440{
441 struct hif_device_usb *hif_dev = hif_handle;
442 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
443 unsigned long flags;
444
445 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
446 ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false);
447 hif_dev->tx.tx_skb_cnt = 0;
448 hif_dev->tx.flags |= HIF_USB_TX_STOP;
449 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
450
451
452 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
453 &hif_dev->tx.tx_pending, list) {
454 usb_kill_urb(tx_buf->urb);
455 }
456
457 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
458}
459
460static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
461{
462 struct hif_device_usb *hif_dev = hif_handle;
463 int ret = 0;
464
465 switch (pipe_id) {
466 case USB_WLAN_TX_PIPE:
467 ret = hif_usb_send_tx(hif_dev, skb);
468 break;
469 case USB_REG_OUT_PIPE:
470 ret = hif_usb_send_regout(hif_dev, skb);
471 break;
472 default:
473 dev_err(&hif_dev->udev->dev,
474 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
475 ret = -EINVAL;
476 break;
477 }
478
479 return ret;
480}
481
482static inline bool check_index(struct sk_buff *skb, u8 idx)
483{
484 struct ath9k_htc_tx_ctl *tx_ctl;
485
486 tx_ctl = HTC_SKB_CB(skb);
487
488 if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
489 (tx_ctl->sta_idx == idx))
490 return true;
491
492 return false;
493}
494
495static void hif_usb_sta_drain(void *hif_handle, u8 idx)
496{
497 struct hif_device_usb *hif_dev = hif_handle;
498 struct sk_buff *skb, *tmp;
499 unsigned long flags;
500
501 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
502
503 skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
504 if (check_index(skb, idx)) {
505 __skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
506 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
507 skb, false);
508 hif_dev->tx.tx_skb_cnt--;
509 TX_STAT_INC(skb_failed);
510 }
511 }
512
513 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
514}
515
516static struct ath9k_htc_hif hif_usb = {
517 .transport = ATH9K_HIF_USB,
518 .name = "ath9k_hif_usb",
519
520 .control_ul_pipe = USB_REG_OUT_PIPE,
521 .control_dl_pipe = USB_REG_IN_PIPE,
522
523 .start = hif_usb_start,
524 .stop = hif_usb_stop,
525 .sta_drain = hif_usb_sta_drain,
526 .send = hif_usb_send,
527};
528
529static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
530 struct sk_buff *skb)
531{
532 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
533 int index = 0, i, len = skb->len;
534 int rx_remain_len, rx_pkt_len;
535 u16 pool_index = 0;
536 u8 *ptr;
537
538 spin_lock(&hif_dev->rx_lock);
539
540 rx_remain_len = hif_dev->rx_remain_len;
541 rx_pkt_len = hif_dev->rx_transfer_len;
542
543 if (rx_remain_len != 0) {
544 struct sk_buff *remain_skb = hif_dev->remain_skb;
545
546 if (remain_skb) {
547 ptr = (u8 *) remain_skb->data;
548
549 index = rx_remain_len;
550 rx_remain_len -= hif_dev->rx_pad_len;
551 ptr += rx_pkt_len;
552
553 memcpy(ptr, skb->data, rx_remain_len);
554
555 rx_pkt_len += rx_remain_len;
556 hif_dev->rx_remain_len = 0;
557 skb_put(remain_skb, rx_pkt_len);
558
559 skb_pool[pool_index++] = remain_skb;
560
561 } else {
562 index = rx_remain_len;
563 }
564 }
565
566 spin_unlock(&hif_dev->rx_lock);
567
568 while (index < len) {
569 u16 pkt_len;
570 u16 pkt_tag;
571 u16 pad_len;
572 int chk_idx;
573
574 ptr = (u8 *) skb->data;
575
576 pkt_len = get_unaligned_le16(ptr + index);
577 pkt_tag = get_unaligned_le16(ptr + index + 2);
578
579 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
580 RX_STAT_INC(skb_dropped);
581 return;
582 }
583
584 pad_len = 4 - (pkt_len & 0x3);
585 if (pad_len == 4)
586 pad_len = 0;
587
588 chk_idx = index;
589 index = index + 4 + pkt_len + pad_len;
590
591 if (index > MAX_RX_BUF_SIZE) {
592 spin_lock(&hif_dev->rx_lock);
593 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
594 hif_dev->rx_transfer_len =
595 MAX_RX_BUF_SIZE - chk_idx - 4;
596 hif_dev->rx_pad_len = pad_len;
597
598 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
599 if (!nskb) {
600 dev_err(&hif_dev->udev->dev,
601 "ath9k_htc: RX memory allocation error\n");
602 spin_unlock(&hif_dev->rx_lock);
603 goto err;
604 }
605 skb_reserve(nskb, 32);
606 RX_STAT_INC(skb_allocated);
607
608 memcpy(nskb->data, &(skb->data[chk_idx+4]),
609 hif_dev->rx_transfer_len);
610
611
612 hif_dev->remain_skb = nskb;
613 spin_unlock(&hif_dev->rx_lock);
614 } else {
615 if (pool_index == MAX_PKT_NUM_IN_TRANSFER) {
616 dev_err(&hif_dev->udev->dev,
617 "ath9k_htc: over RX MAX_PKT_NUM\n");
618 goto err;
619 }
620 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
621 if (!nskb) {
622 dev_err(&hif_dev->udev->dev,
623 "ath9k_htc: RX memory allocation error\n");
624 goto err;
625 }
626 skb_reserve(nskb, 32);
627 RX_STAT_INC(skb_allocated);
628
629 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
630 skb_put(nskb, pkt_len);
631 skb_pool[pool_index++] = nskb;
632 }
633 }
634
635err:
636 for (i = 0; i < pool_index; i++) {
637 RX_STAT_ADD(skb_completed_bytes, skb_pool[i]->len);
638 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
639 skb_pool[i]->len, USB_WLAN_RX_PIPE);
640 RX_STAT_INC(skb_completed);
641 }
642}
643
644static void ath9k_hif_usb_rx_cb(struct urb *urb)
645{
646 struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
647 struct hif_device_usb *hif_dev = rx_buf->hif_dev;
648 struct sk_buff *skb = rx_buf->skb;
649 int ret;
650
651 if (!skb)
652 return;
653
654 if (!hif_dev)
655 goto free;
656
657 switch (urb->status) {
658 case 0:
659 break;
660 case -ENOENT:
661 case -ECONNRESET:
662 case -ENODEV:
663 case -ESHUTDOWN:
664 goto free;
665 default:
666 goto resubmit;
667 }
668
669 if (likely(urb->actual_length != 0)) {
670 skb_put(skb, urb->actual_length);
671 ath9k_hif_usb_rx_stream(hif_dev, skb);
672 }
673
674resubmit:
675 skb_reset_tail_pointer(skb);
676 skb_trim(skb, 0);
677
678 usb_anchor_urb(urb, &hif_dev->rx_submitted);
679 ret = usb_submit_urb(urb, GFP_ATOMIC);
680 if (ret) {
681 usb_unanchor_urb(urb);
682 goto free;
683 }
684
685 return;
686free:
687 kfree_skb(skb);
688 kfree(rx_buf);
689}
690
691static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
692{
693 struct rx_buf *rx_buf = (struct rx_buf *)urb->context;
694 struct hif_device_usb *hif_dev = rx_buf->hif_dev;
695 struct sk_buff *skb = rx_buf->skb;
696 struct sk_buff *nskb;
697 int ret;
698
699 if (!skb)
700 return;
701
702 if (!hif_dev)
703 goto free;
704
705 switch (urb->status) {
706 case 0:
707 break;
708 case -ENOENT:
709 case -ECONNRESET:
710 case -ENODEV:
711 case -ESHUTDOWN:
712 goto free;
713 default:
714 skb_reset_tail_pointer(skb);
715 skb_trim(skb, 0);
716
717 goto resubmit;
718 }
719
720 if (likely(urb->actual_length != 0)) {
721 skb_put(skb, urb->actual_length);
722
723
724 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
725 skb->len, USB_REG_IN_PIPE);
726
727
728 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
729 if (!nskb) {
730 dev_err(&hif_dev->udev->dev,
731 "ath9k_htc: REG_IN memory allocation failure\n");
732 urb->context = NULL;
733 return;
734 }
735
736 rx_buf->skb = nskb;
737
738 usb_fill_int_urb(urb, hif_dev->udev,
739 usb_rcvintpipe(hif_dev->udev,
740 USB_REG_IN_PIPE),
741 nskb->data, MAX_REG_IN_BUF_SIZE,
742 ath9k_hif_usb_reg_in_cb, rx_buf, 1);
743 }
744
745resubmit:
746 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
747 ret = usb_submit_urb(urb, GFP_ATOMIC);
748 if (ret) {
749 usb_unanchor_urb(urb);
750 goto free;
751 }
752
753 return;
754free:
755 kfree_skb(skb);
756 kfree(rx_buf);
757 urb->context = NULL;
758}
759
760static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
761{
762 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
763 unsigned long flags;
764
765 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
766 &hif_dev->tx.tx_buf, list) {
767 usb_kill_urb(tx_buf->urb);
768 list_del(&tx_buf->list);
769 usb_free_urb(tx_buf->urb);
770 kfree(tx_buf->buf);
771 kfree(tx_buf);
772 }
773
774 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
775 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
776 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
777
778 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
779 &hif_dev->tx.tx_pending, list) {
780 usb_kill_urb(tx_buf->urb);
781 list_del(&tx_buf->list);
782 usb_free_urb(tx_buf->urb);
783 kfree(tx_buf->buf);
784 kfree(tx_buf);
785 }
786
787 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
788}
789
790static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
791{
792 struct tx_buf *tx_buf;
793 int i;
794
795 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
796 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
797 spin_lock_init(&hif_dev->tx.tx_lock);
798 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
799 init_usb_anchor(&hif_dev->mgmt_submitted);
800
801 for (i = 0; i < MAX_TX_URB_NUM; i++) {
802 tx_buf = kzalloc(sizeof(*tx_buf), GFP_KERNEL);
803 if (!tx_buf)
804 goto err;
805
806 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
807 if (!tx_buf->buf)
808 goto err;
809
810 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
811 if (!tx_buf->urb)
812 goto err;
813
814 tx_buf->hif_dev = hif_dev;
815 __skb_queue_head_init(&tx_buf->skb_queue);
816
817 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
818 }
819
820 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
821
822 return 0;
823err:
824 if (tx_buf) {
825 kfree(tx_buf->buf);
826 kfree(tx_buf);
827 }
828 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
829 return -ENOMEM;
830}
831
832static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
833{
834 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
835}
836
837static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
838{
839 struct rx_buf *rx_buf = NULL;
840 struct sk_buff *skb = NULL;
841 struct urb *urb = NULL;
842 int i, ret;
843
844 init_usb_anchor(&hif_dev->rx_submitted);
845 spin_lock_init(&hif_dev->rx_lock);
846
847 for (i = 0; i < MAX_RX_URB_NUM; i++) {
848
849 rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
850 if (!rx_buf) {
851 ret = -ENOMEM;
852 goto err_rxb;
853 }
854
855
856 urb = usb_alloc_urb(0, GFP_KERNEL);
857 if (urb == NULL) {
858 ret = -ENOMEM;
859 goto err_urb;
860 }
861
862
863 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
864 if (!skb) {
865 ret = -ENOMEM;
866 goto err_skb;
867 }
868
869 rx_buf->hif_dev = hif_dev;
870 rx_buf->skb = skb;
871
872 usb_fill_bulk_urb(urb, hif_dev->udev,
873 usb_rcvbulkpipe(hif_dev->udev,
874 USB_WLAN_RX_PIPE),
875 skb->data, MAX_RX_BUF_SIZE,
876 ath9k_hif_usb_rx_cb, rx_buf);
877
878
879 usb_anchor_urb(urb, &hif_dev->rx_submitted);
880
881
882 ret = usb_submit_urb(urb, GFP_KERNEL);
883 if (ret) {
884 usb_unanchor_urb(urb);
885 goto err_submit;
886 }
887
888
889
890
891
892 usb_free_urb(urb);
893 }
894
895 return 0;
896
897err_submit:
898 kfree_skb(skb);
899err_skb:
900 usb_free_urb(urb);
901err_urb:
902 kfree(rx_buf);
903err_rxb:
904 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
905 return ret;
906}
907
908static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
909{
910 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
911}
912
913static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
914{
915 struct rx_buf *rx_buf = NULL;
916 struct sk_buff *skb = NULL;
917 struct urb *urb = NULL;
918 int i, ret;
919
920 init_usb_anchor(&hif_dev->reg_in_submitted);
921
922 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
923
924 rx_buf = kzalloc(sizeof(*rx_buf), GFP_KERNEL);
925 if (!rx_buf) {
926 ret = -ENOMEM;
927 goto err_rxb;
928 }
929
930
931 urb = usb_alloc_urb(0, GFP_KERNEL);
932 if (urb == NULL) {
933 ret = -ENOMEM;
934 goto err_urb;
935 }
936
937
938 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
939 if (!skb) {
940 ret = -ENOMEM;
941 goto err_skb;
942 }
943
944 rx_buf->hif_dev = hif_dev;
945 rx_buf->skb = skb;
946
947 usb_fill_int_urb(urb, hif_dev->udev,
948 usb_rcvintpipe(hif_dev->udev,
949 USB_REG_IN_PIPE),
950 skb->data, MAX_REG_IN_BUF_SIZE,
951 ath9k_hif_usb_reg_in_cb, rx_buf, 1);
952
953
954 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
955
956
957 ret = usb_submit_urb(urb, GFP_KERNEL);
958 if (ret) {
959 usb_unanchor_urb(urb);
960 goto err_submit;
961 }
962
963
964
965
966
967 usb_free_urb(urb);
968 }
969
970 return 0;
971
972err_submit:
973 kfree_skb(skb);
974err_skb:
975 usb_free_urb(urb);
976err_urb:
977 kfree(rx_buf);
978err_rxb:
979 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
980 return ret;
981}
982
983static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
984{
985
986 init_usb_anchor(&hif_dev->regout_submitted);
987
988
989 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
990 goto err;
991
992
993 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
994 goto err_rx;
995
996
997 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
998 goto err_reg;
999
1000 return 0;
1001err_reg:
1002 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
1003err_rx:
1004 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
1005err:
1006 return -ENOMEM;
1007}
1008
1009void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
1010{
1011 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
1012 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1013 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
1014 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
1015}
1016
1017static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
1018{
1019 int transfer, err;
1020 const void *data = hif_dev->fw_data;
1021 size_t len = hif_dev->fw_size;
1022 u32 addr = AR9271_FIRMWARE;
1023 u8 *buf = kzalloc(4096, GFP_KERNEL);
1024 u32 firm_offset;
1025
1026 if (!buf)
1027 return -ENOMEM;
1028
1029 while (len) {
1030 transfer = min_t(size_t, len, 4096);
1031 memcpy(buf, data, transfer);
1032
1033 err = usb_control_msg(hif_dev->udev,
1034 usb_sndctrlpipe(hif_dev->udev, 0),
1035 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
1036 addr >> 8, 0, buf, transfer,
1037 USB_MSG_TIMEOUT);
1038 if (err < 0) {
1039 kfree(buf);
1040 return err;
1041 }
1042
1043 len -= transfer;
1044 data += transfer;
1045 addr += transfer;
1046 }
1047 kfree(buf);
1048
1049 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1050 firm_offset = AR7010_FIRMWARE_TEXT;
1051 else
1052 firm_offset = AR9271_FIRMWARE_TEXT;
1053
1054
1055
1056
1057 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1058 FIRMWARE_DOWNLOAD_COMP,
1059 0x40 | USB_DIR_OUT,
1060 firm_offset >> 8, 0, NULL, 0, USB_MSG_TIMEOUT);
1061 if (err)
1062 return -EIO;
1063
1064 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
1065 hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
1066
1067 return 0;
1068}
1069
1070static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
1071{
1072 int ret;
1073
1074 ret = ath9k_hif_usb_download_fw(hif_dev);
1075 if (ret) {
1076 dev_err(&hif_dev->udev->dev,
1077 "ath9k_htc: Firmware - %s download failed\n",
1078 hif_dev->fw_name);
1079 return ret;
1080 }
1081
1082
1083 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1084 if (ret) {
1085 dev_err(&hif_dev->udev->dev,
1086 "ath9k_htc: Unable to allocate URBs\n");
1087 return ret;
1088 }
1089
1090 return 0;
1091}
1092
1093static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1094{
1095 ath9k_hif_usb_dealloc_urbs(hif_dev);
1096}
1097
1098
1099
1100
1101
1102static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1103{
1104 struct device *dev = &hif_dev->udev->dev;
1105 struct device *parent = dev->parent;
1106
1107 complete_all(&hif_dev->fw_done);
1108
1109 if (parent)
1110 device_lock(parent);
1111
1112 device_release_driver(dev);
1113
1114 if (parent)
1115 device_unlock(parent);
1116}
1117
1118static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context);
1119
1120
1121static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev,
1122 bool first)
1123{
1124 char index[8], *chip;
1125 int ret;
1126
1127 if (first) {
1128 if (htc_use_dev_fw) {
1129 hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX + 1;
1130 sprintf(index, "%s", "dev");
1131 } else {
1132 hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX;
1133 sprintf(index, "%d", hif_dev->fw_minor_index);
1134 }
1135 } else {
1136 hif_dev->fw_minor_index--;
1137 sprintf(index, "%d", hif_dev->fw_minor_index);
1138 }
1139
1140
1141 if (MAJOR_VERSION_REQ == 1 && hif_dev->fw_minor_index == 3) {
1142 const char *filename;
1143
1144 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1145 filename = FIRMWARE_AR7010_1_1;
1146 else
1147 filename = FIRMWARE_AR9271;
1148
1149
1150
1151
1152 snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
1153 "%s", filename);
1154
1155 } else if (hif_dev->fw_minor_index < FIRMWARE_MINOR_IDX_MIN) {
1156 dev_err(&hif_dev->udev->dev, "no suitable firmware found!\n");
1157
1158 return -ENOENT;
1159 } else {
1160 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
1161 chip = "7010";
1162 else
1163 chip = "9271";
1164
1165
1166
1167
1168
1169 snprintf(hif_dev->fw_name, sizeof(hif_dev->fw_name),
1170 "%s/htc_%s-%d.%s.0.fw", HTC_FW_PATH,
1171 chip, MAJOR_VERSION_REQ, index);
1172 }
1173
1174 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1175 &hif_dev->udev->dev, GFP_KERNEL,
1176 hif_dev, ath9k_hif_usb_firmware_cb);
1177 if (ret) {
1178 dev_err(&hif_dev->udev->dev,
1179 "ath9k_htc: Async request for firmware %s failed\n",
1180 hif_dev->fw_name);
1181 return ret;
1182 }
1183
1184 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1185 hif_dev->fw_name);
1186
1187 return ret;
1188}
1189
1190static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1191{
1192 struct hif_device_usb *hif_dev = context;
1193 int ret;
1194
1195 if (!fw) {
1196 ret = ath9k_hif_request_firmware(hif_dev, false);
1197 if (!ret)
1198 return;
1199
1200 dev_err(&hif_dev->udev->dev,
1201 "ath9k_htc: Failed to get firmware %s\n",
1202 hif_dev->fw_name);
1203 goto err_fw;
1204 }
1205
1206 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1207 &hif_dev->udev->dev);
1208 if (hif_dev->htc_handle == NULL)
1209 goto err_dev_alloc;
1210
1211 hif_dev->fw_data = fw->data;
1212 hif_dev->fw_size = fw->size;
1213
1214
1215
1216 ret = ath9k_hif_usb_dev_init(hif_dev);
1217 if (ret)
1218 goto err_dev_init;
1219
1220 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1221 &hif_dev->interface->dev,
1222 hif_dev->usb_device_id->idProduct,
1223 hif_dev->udev->product,
1224 hif_dev->usb_device_id->driver_info);
1225 if (ret) {
1226 ret = -EINVAL;
1227 goto err_htc_hw_init;
1228 }
1229
1230 release_firmware(fw);
1231 hif_dev->flags |= HIF_USB_READY;
1232 complete_all(&hif_dev->fw_done);
1233
1234 return;
1235
1236err_htc_hw_init:
1237 ath9k_hif_usb_dev_deinit(hif_dev);
1238err_dev_init:
1239 ath9k_htc_hw_free(hif_dev->htc_handle);
1240err_dev_alloc:
1241 release_firmware(fw);
1242err_fw:
1243 ath9k_hif_usb_firmware_fail(hif_dev);
1244}
1245
1246
1247
1248
1249static int send_eject_command(struct usb_interface *interface)
1250{
1251 struct usb_device *udev = interface_to_usbdev(interface);
1252 struct usb_host_interface *iface_desc = interface->cur_altsetting;
1253 struct usb_endpoint_descriptor *endpoint;
1254 unsigned char *cmd;
1255 u8 bulk_out_ep;
1256 int r;
1257
1258 if (iface_desc->desc.bNumEndpoints < 2)
1259 return -ENODEV;
1260
1261
1262 for (r = 1; r >= 0; r--) {
1263 endpoint = &iface_desc->endpoint[r].desc;
1264 if (usb_endpoint_dir_out(endpoint) &&
1265 usb_endpoint_xfer_bulk(endpoint)) {
1266 bulk_out_ep = endpoint->bEndpointAddress;
1267 break;
1268 }
1269 }
1270 if (r == -1) {
1271 dev_err(&udev->dev,
1272 "ath9k_htc: Could not find bulk out endpoint\n");
1273 return -ENODEV;
1274 }
1275
1276 cmd = kzalloc(31, GFP_KERNEL);
1277 if (cmd == NULL)
1278 return -ENODEV;
1279
1280
1281 cmd[0] = 0x55;
1282 cmd[1] = 0x53;
1283 cmd[2] = 0x42;
1284 cmd[3] = 0x43;
1285 cmd[14] = 6;
1286
1287 cmd[15] = 0x1b;
1288 cmd[19] = 0x2;
1289
1290 dev_info(&udev->dev, "Ejecting storage device...\n");
1291 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1292 cmd, 31, NULL, 2 * USB_MSG_TIMEOUT);
1293 kfree(cmd);
1294 if (r)
1295 return r;
1296
1297
1298
1299
1300 usb_set_intfdata(interface, NULL);
1301 return 0;
1302}
1303
1304static int ath9k_hif_usb_probe(struct usb_interface *interface,
1305 const struct usb_device_id *id)
1306{
1307 struct usb_device *udev = interface_to_usbdev(interface);
1308 struct hif_device_usb *hif_dev;
1309 int ret = 0;
1310
1311 if (id->driver_info == STORAGE_DEVICE)
1312 return send_eject_command(interface);
1313
1314 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1315 if (!hif_dev) {
1316 ret = -ENOMEM;
1317 goto err_alloc;
1318 }
1319
1320 usb_get_dev(udev);
1321
1322 hif_dev->udev = udev;
1323 hif_dev->interface = interface;
1324 hif_dev->usb_device_id = id;
1325#ifdef CONFIG_PM
1326 udev->reset_resume = 1;
1327#endif
1328 usb_set_intfdata(interface, hif_dev);
1329
1330 init_completion(&hif_dev->fw_done);
1331
1332 ret = ath9k_hif_request_firmware(hif_dev, true);
1333 if (ret)
1334 goto err_fw_req;
1335
1336 return ret;
1337
1338err_fw_req:
1339 usb_set_intfdata(interface, NULL);
1340 kfree(hif_dev);
1341 usb_put_dev(udev);
1342err_alloc:
1343 return ret;
1344}
1345
1346static void ath9k_hif_usb_reboot(struct usb_device *udev)
1347{
1348 u32 reboot_cmd = 0xffffffff;
1349 void *buf;
1350 int ret;
1351
1352 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1353 if (!buf)
1354 return;
1355
1356 ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE),
1357 buf, 4, NULL, USB_MSG_TIMEOUT);
1358 if (ret)
1359 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1360
1361 kfree(buf);
1362}
1363
1364static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1365{
1366 struct usb_device *udev = interface_to_usbdev(interface);
1367 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1368 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
1369
1370 if (!hif_dev)
1371 return;
1372
1373 wait_for_completion(&hif_dev->fw_done);
1374
1375 if (hif_dev->flags & HIF_USB_READY) {
1376 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1377 ath9k_hif_usb_dev_deinit(hif_dev);
1378 ath9k_destoy_wmi(hif_dev->htc_handle->drv_priv);
1379 ath9k_htc_hw_free(hif_dev->htc_handle);
1380 }
1381
1382 usb_set_intfdata(interface, NULL);
1383
1384
1385
1386 if (!unplugged && (hif_dev->flags & HIF_USB_READY))
1387 ath9k_hif_usb_reboot(udev);
1388
1389 kfree(hif_dev);
1390 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1391 usb_put_dev(udev);
1392}
1393
1394#ifdef CONFIG_PM
1395static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1396 pm_message_t message)
1397{
1398 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1399
1400
1401
1402
1403
1404 if (!(hif_dev->flags & HIF_USB_START))
1405 ath9k_htc_suspend(hif_dev->htc_handle);
1406
1407 wait_for_completion(&hif_dev->fw_done);
1408
1409 if (hif_dev->flags & HIF_USB_READY)
1410 ath9k_hif_usb_dealloc_urbs(hif_dev);
1411
1412 return 0;
1413}
1414
1415static int ath9k_hif_usb_resume(struct usb_interface *interface)
1416{
1417 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1418 struct htc_target *htc_handle = hif_dev->htc_handle;
1419 int ret;
1420 const struct firmware *fw;
1421
1422 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1423 if (ret)
1424 return ret;
1425
1426 if (hif_dev->flags & HIF_USB_READY) {
1427
1428 ret = request_firmware(&fw, hif_dev->fw_name,
1429 &hif_dev->udev->dev);
1430 if (ret)
1431 goto fail_resume;
1432
1433 hif_dev->fw_data = fw->data;
1434 hif_dev->fw_size = fw->size;
1435 ret = ath9k_hif_usb_download_fw(hif_dev);
1436 release_firmware(fw);
1437 if (ret)
1438 goto fail_resume;
1439 } else {
1440 ath9k_hif_usb_dealloc_urbs(hif_dev);
1441 return -EIO;
1442 }
1443
1444 mdelay(100);
1445
1446 ret = ath9k_htc_resume(htc_handle);
1447
1448 if (ret)
1449 goto fail_resume;
1450
1451 return 0;
1452
1453fail_resume:
1454 ath9k_hif_usb_dealloc_urbs(hif_dev);
1455
1456 return ret;
1457}
1458#endif
1459
1460static struct usb_driver ath9k_hif_usb_driver = {
1461 .name = KBUILD_MODNAME,
1462 .probe = ath9k_hif_usb_probe,
1463 .disconnect = ath9k_hif_usb_disconnect,
1464#ifdef CONFIG_PM
1465 .suspend = ath9k_hif_usb_suspend,
1466 .resume = ath9k_hif_usb_resume,
1467 .reset_resume = ath9k_hif_usb_resume,
1468#endif
1469 .id_table = ath9k_hif_usb_ids,
1470 .soft_unbind = 1,
1471 .disable_hub_initiated_lpm = 1,
1472};
1473
1474int ath9k_hif_usb_init(void)
1475{
1476 return usb_register(&ath9k_hif_usb_driver);
1477}
1478
1479void ath9k_hif_usb_exit(void)
1480{
1481 usb_deregister(&ath9k_hif_usb_driver);
1482}
1483
