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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / wireless / ath / ath9k / hif_usb.c
blob0e9bbb13ba66994cba43ad835de11f9c7936e269
1 /*
2 * Copyright (c) 2010 Atheros Communications Inc.
3 *
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.
7 *
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.
15 */
16
17 #include "htc.h"
18
19 /* identify firmware images */
20 #define FIRMWARE_AR7010 "ar7010.fw"
21 #define FIRMWARE_AR7010_1_1 "ar7010_1_1.fw"
22 #define FIRMWARE_AR9271 "ar9271.fw"
23
24 MODULE_FIRMWARE(FIRMWARE_AR7010);
25 MODULE_FIRMWARE(FIRMWARE_AR7010_1_1);
26 MODULE_FIRMWARE(FIRMWARE_AR9271);
27
28 static struct usb_device_id ath9k_hif_usb_ids[] = {
29 { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
30 { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
31 { USB_DEVICE(0x0cf3, 0x7010) }, /* Atheros */
32 { USB_DEVICE(0x0cf3, 0x7015) }, /* Atheros */
33 { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
34 { USB_DEVICE(0x0846, 0x9018) }, /* Netgear WNDA3200 */
35 { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
36 { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
37 { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
38 { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
39 { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
40 { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
41 { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
42 { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
43 { USB_DEVICE(0x083A, 0xA704) }, /* SMC Networks */
44 { USB_DEVICE(0x040D, 0x3801) }, /* VIA */
45 { USB_DEVICE(0x1668, 0x1200) }, /* Verizon */
46 { },
47 };
48
49 MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
50
51 static int __hif_usb_tx(struct hif_device_usb *hif_dev);
52
53 static void hif_usb_regout_cb(struct urb *urb)
54 {
55 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
56
57 switch (urb->status) {
58 case 0:
59 break;
60 case -ENOENT:
61 case -ECONNRESET:
62 case -ENODEV:
63 case -ESHUTDOWN:
64 goto free;
65 default:
66 break;
67 }
68
69 if (cmd) {
70 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
71 cmd->skb, 1);
72 kfree(cmd);
73 }
74
75 return;
76 free:
77 kfree_skb(cmd->skb);
78 kfree(cmd);
79 }
80
81 static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
82 struct sk_buff *skb)
83 {
84 struct urb *urb;
85 struct cmd_buf *cmd;
86 int ret = 0;
87
88 urb = usb_alloc_urb(0, GFP_KERNEL);
89 if (urb == NULL)
90 return -ENOMEM;
91
92 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
93 if (cmd == NULL) {
94 usb_free_urb(urb);
95 return -ENOMEM;
96 }
97
98 cmd->skb = skb;
99 cmd->hif_dev = hif_dev;
100
101 usb_fill_int_urb(urb, hif_dev->udev,
102 usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
103 skb->data, skb->len,
104 hif_usb_regout_cb, cmd, 1);
105
106 usb_anchor_urb(urb, &hif_dev->regout_submitted);
107 ret = usb_submit_urb(urb, GFP_KERNEL);
108 if (ret) {
109 usb_unanchor_urb(urb);
110 kfree(cmd);
111 }
112 usb_free_urb(urb);
113
114 return ret;
115 }
116
117 static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
118 struct sk_buff_head *list)
119 {
120 struct sk_buff *skb;
121
122 while ((skb = __skb_dequeue(list)) != NULL) {
123 dev_kfree_skb_any(skb);
124 TX_STAT_INC(skb_dropped);
125 }
126 }
127
128 static void hif_usb_tx_cb(struct urb *urb)
129 {
130 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
131 struct hif_device_usb *hif_dev;
132 struct sk_buff *skb;
133
134 if (!tx_buf || !tx_buf->hif_dev)
135 return;
136
137 hif_dev = tx_buf->hif_dev;
138
139 switch (urb->status) {
140 case 0:
141 break;
142 case -ENOENT:
143 case -ECONNRESET:
144 case -ENODEV:
145 case -ESHUTDOWN:
146 /*
147 * The URB has been killed, free the SKBs.
148 */
149 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
150
151 /*
152 * If the URBs are being flushed, no need to add this
153 * URB to the free list.
154 */
155 spin_lock(&hif_dev->tx.tx_lock);
156 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
157 spin_unlock(&hif_dev->tx.tx_lock);
158 return;
159 }
160 spin_unlock(&hif_dev->tx.tx_lock);
161
162 /*
163 * In the stop() case, this URB has to be added to
164 * the free list.
165 */
166 goto add_free;
167 default:
168 break;
169 }
170
171 /*
172 * Check if TX has been stopped, this is needed because
173 * this CB could have been invoked just after the TX lock
174 * was released in hif_stop() and kill_urb() hasn't been
175 * called yet.
176 */
177 spin_lock(&hif_dev->tx.tx_lock);
178 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
179 spin_unlock(&hif_dev->tx.tx_lock);
180 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
181 goto add_free;
182 }
183 spin_unlock(&hif_dev->tx.tx_lock);
184
185 /* Complete the queued SKBs. */
186 while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
187 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
188 skb, 1);
189 TX_STAT_INC(skb_completed);
190 }
191
192 add_free:
193 /* Re-initialize the SKB queue */
194 tx_buf->len = tx_buf->offset = 0;
195 __skb_queue_head_init(&tx_buf->skb_queue);
196
197 /* Add this TX buffer to the free list */
198 spin_lock(&hif_dev->tx.tx_lock);
199 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
200 hif_dev->tx.tx_buf_cnt++;
201 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
202 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
203 TX_STAT_INC(buf_completed);
204 spin_unlock(&hif_dev->tx.tx_lock);
205 }
206
207 /* TX lock has to be taken */
208 static int __hif_usb_tx(struct hif_device_usb *hif_dev)
209 {
210 struct tx_buf *tx_buf = NULL;
211 struct sk_buff *nskb = NULL;
212 int ret = 0, i;
213 u16 *hdr, tx_skb_cnt = 0;
214 u8 *buf;
215
216 if (hif_dev->tx.tx_skb_cnt == 0)
217 return 0;
218
219 /* Check if a free TX buffer is available */
220 if (list_empty(&hif_dev->tx.tx_buf))
221 return 0;
222
223 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
224 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
225 hif_dev->tx.tx_buf_cnt--;
226
227 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
228
229 for (i = 0; i < tx_skb_cnt; i++) {
230 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
231
232 /* Should never be NULL */
233 BUG_ON(!nskb);
234
235 hif_dev->tx.tx_skb_cnt--;
236
237 buf = tx_buf->buf;
238 buf += tx_buf->offset;
239 hdr = (u16 *)buf;
240 *hdr++ = nskb->len;
241 *hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
242 buf += 4;
243 memcpy(buf, nskb->data, nskb->len);
244 tx_buf->len = nskb->len + 4;
245
246 if (i < (tx_skb_cnt - 1))
247 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
248
249 if (i == (tx_skb_cnt - 1))
250 tx_buf->len += tx_buf->offset;
251
252 __skb_queue_tail(&tx_buf->skb_queue, nskb);
253 TX_STAT_INC(skb_queued);
254 }
255
256 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
257 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
258 tx_buf->buf, tx_buf->len,
259 hif_usb_tx_cb, tx_buf);
260
261 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
262 if (ret) {
263 tx_buf->len = tx_buf->offset = 0;
264 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
265 __skb_queue_head_init(&tx_buf->skb_queue);
266 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
267 hif_dev->tx.tx_buf_cnt++;
268 }
269
270 if (!ret)
271 TX_STAT_INC(buf_queued);
272
273 return ret;
274 }
275
276 static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
277 struct ath9k_htc_tx_ctl *tx_ctl)
278 {
279 unsigned long flags;
280
281 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
282
283 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
284 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
285 return -ENODEV;
286 }
287
288 /* Check if the max queue count has been reached */
289 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
290 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
291 return -ENOMEM;
292 }
293
294 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
295 hif_dev->tx.tx_skb_cnt++;
296
297 /* Send normal frames immediately */
298 if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
299 __hif_usb_tx(hif_dev);
300
301 /* Check if AMPDUs have to be sent immediately */
302 if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
303 (hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
304 (hif_dev->tx.tx_skb_cnt < 2)) {
305 __hif_usb_tx(hif_dev);
306 }
307
308 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
309
310 return 0;
311 }
312
313 static void hif_usb_start(void *hif_handle, u8 pipe_id)
314 {
315 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
316 unsigned long flags;
317
318 hif_dev->flags |= HIF_USB_START;
319
320 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
321 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
322 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
323 }
324
325 static void hif_usb_stop(void *hif_handle, u8 pipe_id)
326 {
327 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
328 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
329 unsigned long flags;
330
331 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
332 ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
333 hif_dev->tx.tx_skb_cnt = 0;
334 hif_dev->tx.flags |= HIF_USB_TX_STOP;
335 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
336
337 /* The pending URBs have to be canceled. */
338 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
339 &hif_dev->tx.tx_pending, list) {
340 usb_kill_urb(tx_buf->urb);
341 }
342 }
343
344 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
345 struct ath9k_htc_tx_ctl *tx_ctl)
346 {
347 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
348 int ret = 0;
349
350 switch (pipe_id) {
351 case USB_WLAN_TX_PIPE:
352 ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
353 break;
354 case USB_REG_OUT_PIPE:
355 ret = hif_usb_send_regout(hif_dev, skb);
356 break;
357 default:
358 dev_err(&hif_dev->udev->dev,
359 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
360 ret = -EINVAL;
361 break;
362 }
363
364 return ret;
365 }
366
367 static struct ath9k_htc_hif hif_usb = {
368 .transport = ATH9K_HIF_USB,
369 .name = "ath9k_hif_usb",
370
371 .control_ul_pipe = USB_REG_OUT_PIPE,
372 .control_dl_pipe = USB_REG_IN_PIPE,
373
374 .start = hif_usb_start,
375 .stop = hif_usb_stop,
376 .send = hif_usb_send,
377 };
378
379 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
380 struct sk_buff *skb)
381 {
382 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
383 int index = 0, i = 0, chk_idx, len = skb->len;
384 int rx_remain_len = 0, rx_pkt_len = 0;
385 u16 pkt_len, pkt_tag, pool_index = 0;
386 u8 *ptr;
387
388 spin_lock(&hif_dev->rx_lock);
389
390 rx_remain_len = hif_dev->rx_remain_len;
391 rx_pkt_len = hif_dev->rx_transfer_len;
392
393 if (rx_remain_len != 0) {
394 struct sk_buff *remain_skb = hif_dev->remain_skb;
395
396 if (remain_skb) {
397 ptr = (u8 *) remain_skb->data;
398
399 index = rx_remain_len;
400 rx_remain_len -= hif_dev->rx_pad_len;
401 ptr += rx_pkt_len;
402
403 memcpy(ptr, skb->data, rx_remain_len);
404
405 rx_pkt_len += rx_remain_len;
406 hif_dev->rx_remain_len = 0;
407 skb_put(remain_skb, rx_pkt_len);
408
409 skb_pool[pool_index++] = remain_skb;
410
411 } else {
412 index = rx_remain_len;
413 }
414 }
415
416 spin_unlock(&hif_dev->rx_lock);
417
418 while (index < len) {
419 ptr = (u8 *) skb->data;
420
421 pkt_len = ptr[index] + (ptr[index+1] << 8);
422 pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
423
424 if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) {
425 u16 pad_len;
426
427 pad_len = 4 - (pkt_len & 0x3);
428 if (pad_len == 4)
429 pad_len = 0;
430
431 chk_idx = index;
432 index = index + 4 + pkt_len + pad_len;
433
434 if (index > MAX_RX_BUF_SIZE) {
435 spin_lock(&hif_dev->rx_lock);
436 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
437 hif_dev->rx_transfer_len =
438 MAX_RX_BUF_SIZE - chk_idx - 4;
439 hif_dev->rx_pad_len = pad_len;
440
441 nskb = __dev_alloc_skb(pkt_len + 32,
442 GFP_ATOMIC);
443 if (!nskb) {
444 dev_err(&hif_dev->udev->dev,
445 "ath9k_htc: RX memory allocation"
446 " error\n");
447 spin_unlock(&hif_dev->rx_lock);
448 goto err;
449 }
450 skb_reserve(nskb, 32);
451 RX_STAT_INC(skb_allocated);
452
453 memcpy(nskb->data, &(skb->data[chk_idx+4]),
454 hif_dev->rx_transfer_len);
455
456 /* Record the buffer pointer */
457 hif_dev->remain_skb = nskb;
458 spin_unlock(&hif_dev->rx_lock);
459 } else {
460 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
461 if (!nskb) {
462 dev_err(&hif_dev->udev->dev,
463 "ath9k_htc: RX memory allocation"
464 " error\n");
465 goto err;
466 }
467 skb_reserve(nskb, 32);
468 RX_STAT_INC(skb_allocated);
469
470 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
471 skb_put(nskb, pkt_len);
472 skb_pool[pool_index++] = nskb;
473 }
474 } else {
475 RX_STAT_INC(skb_dropped);
476 return;
477 }
478 }
479
480 err:
481 for (i = 0; i < pool_index; i++) {
482 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
483 skb_pool[i]->len, USB_WLAN_RX_PIPE);
484 RX_STAT_INC(skb_completed);
485 }
486 }
487
488 static void ath9k_hif_usb_rx_cb(struct urb *urb)
489 {
490 struct sk_buff *skb = (struct sk_buff *) urb->context;
491 struct hif_device_usb *hif_dev = (struct hif_device_usb *)
492 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
493 int ret;
494
495 if (!skb)
496 return;
497
498 if (!hif_dev)
499 goto free;
500
501 switch (urb->status) {
502 case 0:
503 break;
504 case -ENOENT:
505 case -ECONNRESET:
506 case -ENODEV:
507 case -ESHUTDOWN:
508 goto free;
509 default:
510 goto resubmit;
511 }
512
513 if (likely(urb->actual_length != 0)) {
514 skb_put(skb, urb->actual_length);
515 ath9k_hif_usb_rx_stream(hif_dev, skb);
516 }
517
518 resubmit:
519 skb_reset_tail_pointer(skb);
520 skb_trim(skb, 0);
521
522 usb_anchor_urb(urb, &hif_dev->rx_submitted);
523 ret = usb_submit_urb(urb, GFP_ATOMIC);
524 if (ret) {
525 usb_unanchor_urb(urb);
526 goto free;
527 }
528
529 return;
530 free:
531 kfree_skb(skb);
532 }
533
534 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
535 {
536 struct sk_buff *skb = (struct sk_buff *) urb->context;
537 struct sk_buff *nskb;
538 struct hif_device_usb *hif_dev = (struct hif_device_usb *)
539 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
540 int ret;
541
542 if (!skb)
543 return;
544
545 if (!hif_dev)
546 goto free;
547
548 switch (urb->status) {
549 case 0:
550 break;
551 case -ENOENT:
552 case -ECONNRESET:
553 case -ENODEV:
554 case -ESHUTDOWN:
555 goto free;
556 default:
557 goto resubmit;
558 }
559
560 if (likely(urb->actual_length != 0)) {
561 skb_put(skb, urb->actual_length);
562
563 /* Process the command first */
564 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
565 skb->len, USB_REG_IN_PIPE);
566
567
568 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
569 if (!nskb) {
570 dev_err(&hif_dev->udev->dev,
571 "ath9k_htc: REG_IN memory allocation failure\n");
572 urb->context = NULL;
573 return;
574 }
575
576 usb_fill_int_urb(urb, hif_dev->udev,
577 usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
578 nskb->data, MAX_REG_IN_BUF_SIZE,
579 ath9k_hif_usb_reg_in_cb, nskb, 1);
580
581 ret = usb_submit_urb(urb, GFP_ATOMIC);
582 if (ret) {
583 kfree_skb(nskb);
584 urb->context = NULL;
585 }
586
587 return;
588 }
589
590 resubmit:
591 skb_reset_tail_pointer(skb);
592 skb_trim(skb, 0);
593
594 ret = usb_submit_urb(urb, GFP_ATOMIC);
595 if (ret)
596 goto free;
597
598 return;
599 free:
600 kfree_skb(skb);
601 urb->context = NULL;
602 }
603
604 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
605 {
606 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
607 unsigned long flags;
608
609 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
610 &hif_dev->tx.tx_buf, list) {
611 usb_kill_urb(tx_buf->urb);
612 list_del(&tx_buf->list);
613 usb_free_urb(tx_buf->urb);
614 kfree(tx_buf->buf);
615 kfree(tx_buf);
616 }
617
618 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
619 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
620 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
621
622 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
623 &hif_dev->tx.tx_pending, list) {
624 usb_kill_urb(tx_buf->urb);
625 list_del(&tx_buf->list);
626 usb_free_urb(tx_buf->urb);
627 kfree(tx_buf->buf);
628 kfree(tx_buf);
629 }
630 }
631
632 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
633 {
634 struct tx_buf *tx_buf;
635 int i;
636
637 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
638 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
639 spin_lock_init(&hif_dev->tx.tx_lock);
640 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
641
642 for (i = 0; i < MAX_TX_URB_NUM; i++) {
643 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
644 if (!tx_buf)
645 goto err;
646
647 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
648 if (!tx_buf->buf)
649 goto err;
650
651 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
652 if (!tx_buf->urb)
653 goto err;
654
655 tx_buf->hif_dev = hif_dev;
656 __skb_queue_head_init(&tx_buf->skb_queue);
657
658 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
659 }
660
661 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
662
663 return 0;
664 err:
665 if (tx_buf) {
666 kfree(tx_buf->buf);
667 kfree(tx_buf);
668 }
669 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
670 return -ENOMEM;
671 }
672
673 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
674 {
675 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
676 }
677
678 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
679 {
680 struct urb *urb = NULL;
681 struct sk_buff *skb = NULL;
682 int i, ret;
683
684 init_usb_anchor(&hif_dev->rx_submitted);
685 spin_lock_init(&hif_dev->rx_lock);
686
687 for (i = 0; i < MAX_RX_URB_NUM; i++) {
688
689 /* Allocate URB */
690 urb = usb_alloc_urb(0, GFP_KERNEL);
691 if (urb == NULL) {
692 ret = -ENOMEM;
693 goto err_urb;
694 }
695
696 /* Allocate buffer */
697 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
698 if (!skb) {
699 ret = -ENOMEM;
700 goto err_skb;
701 }
702
703 usb_fill_bulk_urb(urb, hif_dev->udev,
704 usb_rcvbulkpipe(hif_dev->udev,
705 USB_WLAN_RX_PIPE),
706 skb->data, MAX_RX_BUF_SIZE,
707 ath9k_hif_usb_rx_cb, skb);
708
709 /* Anchor URB */
710 usb_anchor_urb(urb, &hif_dev->rx_submitted);
711
712 /* Submit URB */
713 ret = usb_submit_urb(urb, GFP_KERNEL);
714 if (ret) {
715 usb_unanchor_urb(urb);
716 goto err_submit;
717 }
718
719 /*
720 * Drop reference count.
721 * This ensures that the URB is freed when killing them.
722 */
723 usb_free_urb(urb);
724 }
725
726 return 0;
727
728 err_submit:
729 kfree_skb(skb);
730 err_skb:
731 usb_free_urb(urb);
732 err_urb:
733 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
734 return ret;
735 }
736
737 static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
738 {
739 if (hif_dev->reg_in_urb) {
740 usb_kill_urb(hif_dev->reg_in_urb);
741 if (hif_dev->reg_in_urb->context)
742 kfree_skb((void *)hif_dev->reg_in_urb->context);
743 usb_free_urb(hif_dev->reg_in_urb);
744 hif_dev->reg_in_urb = NULL;
745 }
746 }
747
748 static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
749 {
750 struct sk_buff *skb;
751
752 hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
753 if (hif_dev->reg_in_urb == NULL)
754 return -ENOMEM;
755
756 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
757 if (!skb)
758 goto err;
759
760 usb_fill_int_urb(hif_dev->reg_in_urb, hif_dev->udev,
761 usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
762 skb->data, MAX_REG_IN_BUF_SIZE,
763 ath9k_hif_usb_reg_in_cb, skb, 1);
764
765 if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
766 goto err;
767
768 return 0;
769
770 err:
771 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
772 return -ENOMEM;
773 }
774
775 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
776 {
777 /* Register Write */
778 init_usb_anchor(&hif_dev->regout_submitted);
779
780 /* TX */
781 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
782 goto err;
783
784 /* RX */
785 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
786 goto err_rx;
787
788 /* Register Read */
789 if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
790 goto err_reg;
791
792 return 0;
793 err_reg:
794 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
795 err_rx:
796 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
797 err:
798 return -ENOMEM;
799 }
800
801 static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
802 {
803 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
804 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
805 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
806 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
807 }
808
809 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
810 {
811 int transfer, err;
812 const void *data = hif_dev->firmware->data;
813 size_t len = hif_dev->firmware->size;
814 u32 addr = AR9271_FIRMWARE;
815 u8 *buf = kzalloc(4096, GFP_KERNEL);
816 u32 firm_offset;
817
818 if (!buf)
819 return -ENOMEM;
820
821 while (len) {
822 transfer = min_t(int, len, 4096);
823 memcpy(buf, data, transfer);
824
825 err = usb_control_msg(hif_dev->udev,
826 usb_sndctrlpipe(hif_dev->udev, 0),
827 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
828 addr >> 8, 0, buf, transfer, HZ);
829 if (err < 0) {
830 kfree(buf);
831 return err;
832 }
833
834 len -= transfer;
835 data += transfer;
836 addr += transfer;
837 }
838 kfree(buf);
839
840 switch (hif_dev->device_id) {
841 case 0x7010:
842 case 0x7015:
843 case 0x9018:
844 case 0xA704:
845 case 0x1200:
846 firm_offset = AR7010_FIRMWARE_TEXT;
847 break;
848 default:
849 firm_offset = AR9271_FIRMWARE_TEXT;
850 break;
851 }
852
853 /*
854 * Issue FW download complete command to firmware.
855 */
856 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
857 FIRMWARE_DOWNLOAD_COMP,
858 0x40 | USB_DIR_OUT,
859 firm_offset >> 8, 0, NULL, 0, HZ);
860 if (err)
861 return -EIO;
862
863 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
864 hif_dev->fw_name, (unsigned long) hif_dev->firmware->size);
865
866 return 0;
867 }
868
869 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
870 {
871 int ret;
872
873 /* Request firmware */
874 ret = request_firmware(&hif_dev->firmware, hif_dev->fw_name,
875 &hif_dev->udev->dev);
876 if (ret) {
877 dev_err(&hif_dev->udev->dev,
878 "ath9k_htc: Firmware - %s not found\n", hif_dev->fw_name);
879 goto err_fw_req;
880 }
881
882 /* Alloc URBs */
883 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
884 if (ret) {
885 dev_err(&hif_dev->udev->dev,
886 "ath9k_htc: Unable to allocate URBs\n");
887 goto err_urb;
888 }
889
890 /* Download firmware */
891 ret = ath9k_hif_usb_download_fw(hif_dev);
892 if (ret) {
893 dev_err(&hif_dev->udev->dev,
894 "ath9k_htc: Firmware - %s download failed\n",
895 hif_dev->fw_name);
896 goto err_fw_download;
897 }
898
899 return 0;
900
901 err_fw_download:
902 ath9k_hif_usb_dealloc_urbs(hif_dev);
903 err_urb:
904 release_firmware(hif_dev->firmware);
905 err_fw_req:
906 hif_dev->firmware = NULL;
907 return ret;
908 }
909
910 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
911 {
912 ath9k_hif_usb_dealloc_urbs(hif_dev);
913 if (hif_dev->firmware)
914 release_firmware(hif_dev->firmware);
915 }
916
917 static int ath9k_hif_usb_probe(struct usb_interface *interface,
918 const struct usb_device_id *id)
919 {
920 struct usb_device *udev = interface_to_usbdev(interface);
921 struct hif_device_usb *hif_dev;
922 int ret = 0;
923
924 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
925 if (!hif_dev) {
926 ret = -ENOMEM;
927 goto err_alloc;
928 }
929
930 usb_get_dev(udev);
931 hif_dev->udev = udev;
932 hif_dev->interface = interface;
933 hif_dev->device_id = id->idProduct;
934 #ifdef CONFIG_PM
935 udev->reset_resume = 1;
936 #endif
937 usb_set_intfdata(interface, hif_dev);
938
939 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
940 &hif_dev->udev->dev);
941 if (hif_dev->htc_handle == NULL) {
942 ret = -ENOMEM;
943 goto err_htc_hw_alloc;
944 }
945
946 /* Find out which firmware to load */
947
948 switch(hif_dev->device_id) {
949 case 0x7010:
950 case 0x7015:
951 case 0x9018:
952 case 0xA704:
953 case 0x1200:
954 if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x0202)
955 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
956 else
957 hif_dev->fw_name = FIRMWARE_AR7010;
958 break;
959 default:
960 hif_dev->fw_name = FIRMWARE_AR9271;
961 break;
962 }
963
964 ret = ath9k_hif_usb_dev_init(hif_dev);
965 if (ret) {
966 ret = -EINVAL;
967 goto err_hif_init_usb;
968 }
969
970 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
971 &hif_dev->udev->dev, hif_dev->device_id);
972 if (ret) {
973 ret = -EINVAL;
974 goto err_htc_hw_init;
975 }
976
977 dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
978
979 return 0;
980
981 err_htc_hw_init:
982 ath9k_hif_usb_dev_deinit(hif_dev);
983 err_hif_init_usb:
984 ath9k_htc_hw_free(hif_dev->htc_handle);
985 err_htc_hw_alloc:
986 usb_set_intfdata(interface, NULL);
987 kfree(hif_dev);
988 usb_put_dev(udev);
989 err_alloc:
990 return ret;
991 }
992
993 static void ath9k_hif_usb_reboot(struct usb_device *udev)
994 {
995 u32 reboot_cmd = 0xffffffff;
996 void *buf;
997 int ret;
998
999 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1000 if (!buf)
1001 return;
1002
1003 ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
1004 buf, 4, NULL, HZ);
1005 if (ret)
1006 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1007
1008 kfree(buf);
1009 }
1010
1011 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1012 {
1013 struct usb_device *udev = interface_to_usbdev(interface);
1014 struct hif_device_usb *hif_dev =
1015 (struct hif_device_usb *) usb_get_intfdata(interface);
1016
1017 if (hif_dev) {
1018 ath9k_htc_hw_deinit(hif_dev->htc_handle,
1019 (udev->state == USB_STATE_NOTATTACHED) ? true : false);
1020 ath9k_htc_hw_free(hif_dev->htc_handle);
1021 ath9k_hif_usb_dev_deinit(hif_dev);
1022 usb_set_intfdata(interface, NULL);
1023 }
1024
1025 if (hif_dev->flags & HIF_USB_START)
1026 ath9k_hif_usb_reboot(udev);
1027
1028 kfree(hif_dev);
1029 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1030 usb_put_dev(udev);
1031 }
1032
1033 #ifdef CONFIG_PM
1034 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1035 pm_message_t message)
1036 {
1037 struct hif_device_usb *hif_dev =
1038 (struct hif_device_usb *) usb_get_intfdata(interface);
1039
1040 ath9k_hif_usb_dealloc_urbs(hif_dev);
1041
1042 return 0;
1043 }
1044
1045 static int ath9k_hif_usb_resume(struct usb_interface *interface)
1046 {
1047 struct hif_device_usb *hif_dev =
1048 (struct hif_device_usb *) usb_get_intfdata(interface);
1049 int ret;
1050
1051 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1052 if (ret)
1053 return ret;
1054
1055 if (hif_dev->firmware) {
1056 ret = ath9k_hif_usb_download_fw(hif_dev);
1057 if (ret)
1058 goto fail_resume;
1059 } else {
1060 ath9k_hif_usb_dealloc_urbs(hif_dev);
1061 return -EIO;
1062 }
1063
1064 mdelay(100);
1065
1066 ret = ath9k_htc_resume(hif_dev->htc_handle);
1067
1068 if (ret)
1069 goto fail_resume;
1070
1071 return 0;
1072
1073 fail_resume:
1074 ath9k_hif_usb_dealloc_urbs(hif_dev);
1075
1076 return ret;
1077 }
1078 #endif
1079
1080 static struct usb_driver ath9k_hif_usb_driver = {
1081 .name = "ath9k_hif_usb",
1082 .probe = ath9k_hif_usb_probe,
1083 .disconnect = ath9k_hif_usb_disconnect,
1084 #ifdef CONFIG_PM
1085 .suspend = ath9k_hif_usb_suspend,
1086 .resume = ath9k_hif_usb_resume,
1087 .reset_resume = ath9k_hif_usb_resume,
1088 #endif
1089 .id_table = ath9k_hif_usb_ids,
1090 .soft_unbind = 1,
1091 };
1092
1093 int ath9k_hif_usb_init(void)
1094 {
1095 return usb_register(&ath9k_hif_usb_driver);
1096 }
1097
1098 void ath9k_hif_usb_exit(void)
1099 {
1100 usb_deregister(&ath9k_hif_usb_driver);
1101 }
Tomato firmware and modifications.