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mwifiex: parse WPS IEs from beacon_data
[deliverable/linux.git] / drivers / net / wireless / ath / ath9k / hif_usb.c
CommitLineData
fb9987d0 1/*
5b68138e 2 * Copyright (c) 2010-2011 Atheros Communications Inc.
fb9987d0
S		 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
78fa99ab 17#include <asm/unaligned.h>
fb9987d0
S		 18#include "htc.h"
19
d0ee0ebe 20/* identify firmware images */
ce18f391
SM		 21#define FIRMWARE_AR7010_1_1 "htc_7010.fw"
22#define FIRMWARE_AR9271 "htc_9271.fw"
d0ee0ebe 23
d0ee0ebe
JL		 24MODULE_FIRMWARE(FIRMWARE_AR7010_1_1);
25MODULE_FIRMWARE(FIRMWARE_AR9271);
26
fb9987d0 27static struct usb_device_id ath9k_hif_usb_ids[] = {
4e63f768
S		 28 { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
29 { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
4e63f768 30 { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
4e63f768
S		 31 { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
32 { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
33 { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
ac618d70 34 { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
32b08955
RM		 35 { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
36 { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
37 { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
4e63f768 38 { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
32b08955 39 { USB_DEVICE(0x040D, 0x3801) }, /* VIA */
452d7dd8 40 { USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */
8c34559b 41 { USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */
0b5ead91
SM		 42
43 { USB_DEVICE(0x0cf3, 0x7015),
44 .driver_info = AR9287_USB }, /* Atheros */
64f12170 45 { USB_DEVICE(0x1668, 0x1200),
0b5ead91
SM		 46 .driver_info = AR9287_USB }, /* Verizon */
47
48 { USB_DEVICE(0x0cf3, 0x7010),
49 .driver_info = AR9280_USB }, /* Atheros */
50 { USB_DEVICE(0x0846, 0x9018),
51 .driver_info = AR9280_USB }, /* Netgear WNDA3200 */
52 { USB_DEVICE(0x083A, 0xA704),
53 .driver_info = AR9280_USB }, /* SMC Networks */
5cf6fa78
MSS		 54 { USB_DEVICE(0x0411, 0x017f),
55 .driver_info = AR9280_USB }, /* Sony UWA-BR100 */
d90b5708
SM		 56 { USB_DEVICE(0x04da, 0x3904),
57 .driver_info = AR9280_USB },
0b5ead91 58
36bcce43
SM		 59 { USB_DEVICE(0x0cf3, 0x20ff),
60 .driver_info = STORAGE_DEVICE },
61
fb9987d0
S		 62 { },
63};
64
65MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
66
67static int __hif_usb_tx(struct hif_device_usb *hif_dev);
68
69static void hif_usb_regout_cb(struct urb *urb)
70{
71 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
fb9987d0
S		 72
73 switch (urb->status) {
74 case 0:
75 break;
76 case -ENOENT:
77 case -ECONNRESET:
fb9987d0
S		 78 case -ENODEV:
79 case -ESHUTDOWN:
6f0f2669 80 goto free;
fb9987d0
S		 81 default:
82 break;
83 }
84
85 if (cmd) {
86 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
2f80194c 87 cmd->skb, true);
fb9987d0 88 kfree(cmd);
fb9987d0 89 }
6f0f2669
S		 90
91 return;
92free:
0fa35a58 93 kfree_skb(cmd->skb);
6f0f2669 94 kfree(cmd);
fb9987d0
S		 95}
96
97static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
98 struct sk_buff *skb)
99{
100 struct urb *urb;
101 struct cmd_buf *cmd;
102 int ret = 0;
103
104 urb = usb_alloc_urb(0, GFP_KERNEL);
105 if (urb == NULL)
106 return -ENOMEM;
107
108 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
109 if (cmd == NULL) {
110 usb_free_urb(urb);
111 return -ENOMEM;
112 }
113
114 cmd->skb = skb;
115 cmd->hif_dev = hif_dev;
116
4a0e8ecc
RM		 117 usb_fill_bulk_urb(urb, hif_dev->udev,
118 usb_sndbulkpipe(hif_dev->udev, USB_REG_OUT_PIPE),
fb9987d0 119 skb->data, skb->len,
4a0e8ecc 120 hif_usb_regout_cb, cmd);
fb9987d0 121
6f0f2669 122 usb_anchor_urb(urb, &hif_dev->regout_submitted);
fb9987d0
S		 123 ret = usb_submit_urb(urb, GFP_KERNEL);
124 if (ret) {
6f0f2669 125 usb_unanchor_urb(urb);
fb9987d0
S		 126 kfree(cmd);
127 }
6f0f2669 128 usb_free_urb(urb);
fb9987d0
S		 129
130 return ret;
131}
132
2f80194c
SM		 133static void hif_usb_mgmt_cb(struct urb *urb)
134{
135 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
02c5172c 136 struct hif_device_usb *hif_dev;
2f80194c
SM		 137 bool txok = true;
138
139 if (!cmd || !cmd->skb || !cmd->hif_dev)
140 return;
141
02c5172c
RM		 142 hif_dev = cmd->hif_dev;
143
2f80194c
SM		 144 switch (urb->status) {
145 case 0:
146 break;
147 case -ENOENT:
148 case -ECONNRESET:
149 case -ENODEV:
150 case -ESHUTDOWN:
151 txok = false;
152
153 /*
154 * If the URBs are being flushed, no need to complete
155 * this packet.
156 */
157 spin_lock(&hif_dev->tx.tx_lock);
158 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
159 spin_unlock(&hif_dev->tx.tx_lock);
160 dev_kfree_skb_any(cmd->skb);
161 kfree(cmd);
162 return;
163 }
164 spin_unlock(&hif_dev->tx.tx_lock);
165
166 break;
167 default:
168 txok = false;
169 break;
170 }
171
172 skb_pull(cmd->skb, 4);
173 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
174 cmd->skb, txok);
175 kfree(cmd);
176}
177
178static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev,
179 struct sk_buff *skb)
180{
181 struct urb *urb;
182 struct cmd_buf *cmd;
183 int ret = 0;
184 __le16 *hdr;
185
186 urb = usb_alloc_urb(0, GFP_ATOMIC);
187 if (urb == NULL)
188 return -ENOMEM;
189
190 cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
191 if (cmd == NULL) {
192 usb_free_urb(urb);
193 return -ENOMEM;
194 }
195
196 cmd->skb = skb;
197 cmd->hif_dev = hif_dev;
198
199 hdr = (__le16 *) skb_push(skb, 4);
200 *hdr++ = cpu_to_le16(skb->len - 4);
201 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
202
203 usb_fill_bulk_urb(urb, hif_dev->udev,
204 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
205 skb->data, skb->len,
206 hif_usb_mgmt_cb, cmd);
207
208 usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
209 ret = usb_submit_urb(urb, GFP_ATOMIC);
210 if (ret) {
211 usb_unanchor_urb(urb);
212 kfree(cmd);
213 }
214 usb_free_urb(urb);
215
216 return ret;
217}
218
c11d8f89
S		 219static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
220 struct sk_buff_head *list)
221{
222 struct sk_buff *skb;
223
224 while ((skb = __skb_dequeue(list)) != NULL) {
225 dev_kfree_skb_any(skb);
b587fc81
SM		 226 }
227}
228
229static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
230 struct sk_buff_head *queue,
231 bool txok)
232{
233 struct sk_buff *skb;
234
235 while ((skb = __skb_dequeue(queue)) != NULL) {
236 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
237 skb, txok);
dfa8fc69
JL		 238 if (txok)
239 TX_STAT_INC(skb_success);
240 else
241 TX_STAT_INC(skb_failed);
c11d8f89
S		 242 }
243}
244
fb9987d0
S		 245static void hif_usb_tx_cb(struct urb *urb)
246{
247 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
690e781c 248 struct hif_device_usb *hif_dev;
b587fc81 249 bool txok = true;
fb9987d0 250
690e781c 251 if (!tx_buf || !tx_buf->hif_dev)
fb9987d0
S		 252 return;
253
690e781c
DC		 254 hif_dev = tx_buf->hif_dev;
255
fb9987d0
S		 256 switch (urb->status) {
257 case 0:
258 break;
259 case -ENOENT:
260 case -ECONNRESET:
fb9987d0
S		 261 case -ENODEV:
262 case -ESHUTDOWN:
b587fc81 263 txok = false;
ff8f59b5
SM		 264
265 /*
266 * If the URBs are being flushed, no need to add this
267 * URB to the free list.
268 */
269 spin_lock(&hif_dev->tx.tx_lock);
270 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
271 spin_unlock(&hif_dev->tx.tx_lock);
b587fc81 272 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
ff8f59b5
SM		 273 return;
274 }
275 spin_unlock(&hif_dev->tx.tx_lock);
276
b587fc81 277 break;
fb9987d0 278 default:
b587fc81 279 txok = false;
fb9987d0
S		 280 break;
281 }
282
b587fc81 283 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
c11d8f89 284
c11d8f89
S		 285 /* Re-initialize the SKB queue */
286 tx_buf->len = tx_buf->offset = 0;
287 __skb_queue_head_init(&tx_buf->skb_queue);
288
289 /* Add this TX buffer to the free list */
290 spin_lock(&hif_dev->tx.tx_lock);
291 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
292 hif_dev->tx.tx_buf_cnt++;
293 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
294 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
295 TX_STAT_INC(buf_completed);
296 spin_unlock(&hif_dev->tx.tx_lock);
f8e1d080
ML		 297}
298
fb9987d0
S		 299/* TX lock has to be taken */
300static int __hif_usb_tx(struct hif_device_usb *hif_dev)
301{
302 struct tx_buf *tx_buf = NULL;
303 struct sk_buff *nskb = NULL;
304 int ret = 0, i;
2c27392d 305 u16 tx_skb_cnt = 0;
fb9987d0 306 u8 *buf;
2c27392d 307 __le16 *hdr;
fb9987d0
S		 308
309 if (hif_dev->tx.tx_skb_cnt == 0)
310 return 0;
311
312 /* Check if a free TX buffer is available */
313 if (list_empty(&hif_dev->tx.tx_buf))
314 return 0;
315
316 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
c11d8f89 317 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
fb9987d0
S		 318 hif_dev->tx.tx_buf_cnt--;
319
320 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
321
322 for (i = 0; i < tx_skb_cnt; i++) {
323 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
324
325 /* Should never be NULL */
326 BUG_ON(!nskb);
327
328 hif_dev->tx.tx_skb_cnt--;
329
330 buf = tx_buf->buf;
331 buf += tx_buf->offset;
2c27392d
SM		 332 hdr = (__le16 *)buf;
333 *hdr++ = cpu_to_le16(nskb->len);
334 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
fb9987d0
S		 335 buf += 4;
336 memcpy(buf, nskb->data, nskb->len);
337 tx_buf->len = nskb->len + 4;
338
339 if (i < (tx_skb_cnt - 1))
340 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
341
342 if (i == (tx_skb_cnt - 1))
343 tx_buf->len += tx_buf->offset;
344
345 __skb_queue_tail(&tx_buf->skb_queue, nskb);
346 TX_STAT_INC(skb_queued);
347 }
348
349 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
350 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
351 tx_buf->buf, tx_buf->len,
352 hif_usb_tx_cb, tx_buf);
353
354 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
355 if (ret) {
356 tx_buf->len = tx_buf->offset = 0;
b587fc81 357 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false);
fb9987d0
S		 358 __skb_queue_head_init(&tx_buf->skb_queue);
359 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
360 hif_dev->tx.tx_buf_cnt++;
361 }
362
363 if (!ret)
364 TX_STAT_INC(buf_queued);
365
366 return ret;
367}
368
40dc9e4b 369static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
fb9987d0 370{
40dc9e4b 371 struct ath9k_htc_tx_ctl *tx_ctl;
fb9987d0 372 unsigned long flags;
2f80194c 373 int ret = 0;
fb9987d0
S		 374
375 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
376
377 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
378 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
379 return -ENODEV;
380 }
381
382 /* Check if the max queue count has been reached */
383 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
384 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
385 return -ENOMEM;
386 }
387
2f80194c 388 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
fb9987d0 389
40dc9e4b
SM		 390 tx_ctl = HTC_SKB_CB(skb);
391
2f80194c
SM		 392 /* Mgmt/Beacon frames don't use the TX buffer pool */
393 if ((tx_ctl->type == ATH9K_HTC_MGMT) ||
394 (tx_ctl->type == ATH9K_HTC_BEACON)) {
395 ret = hif_usb_send_mgmt(hif_dev, skb);
396 }
397
398 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
399
400 if ((tx_ctl->type == ATH9K_HTC_NORMAL) ||
401 (tx_ctl->type == ATH9K_HTC_AMPDU)) {
402 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
403 hif_dev->tx.tx_skb_cnt++;
404 }
fb9987d0
S		 405
406 /* Check if AMPDUs have to be sent immediately */
2f80194c 407 if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
fb9987d0
S		 408 (hif_dev->tx.tx_skb_cnt < 2)) {
409 __hif_usb_tx(hif_dev);
410 }
411
412 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
413
2f80194c 414 return ret;
fb9987d0
S		 415}
416
e1fe7c38 417static void hif_usb_start(void *hif_handle)
fb9987d0
S		 418{
419 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
420 unsigned long flags;
421
422 hif_dev->flags |= HIF_USB_START;
423
424 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
425 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
426 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
427}
428
e1fe7c38 429static void hif_usb_stop(void *hif_handle)
fb9987d0
S		 430{
431 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
ff8f59b5 432 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
fb9987d0
S		 433 unsigned long flags;
434
435 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
b587fc81 436 ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false);
fb9987d0
S		 437 hif_dev->tx.tx_skb_cnt = 0;
438 hif_dev->tx.flags |= HIF_USB_TX_STOP;
439 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
ff8f59b5
SM		 440
441 /* The pending URBs have to be canceled. */
442 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
443 &hif_dev->tx.tx_pending, list) {
444 usb_kill_urb(tx_buf->urb);
445 }
2f80194c
SM		 446
447 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
fb9987d0
S		 448}
449
40dc9e4b 450static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
fb9987d0
S		 451{
452 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
453 int ret = 0;
454
455 switch (pipe_id) {
456 case USB_WLAN_TX_PIPE:
40dc9e4b 457 ret = hif_usb_send_tx(hif_dev, skb);
fb9987d0
S		 458 break;
459 case USB_REG_OUT_PIPE:
460 ret = hif_usb_send_regout(hif_dev, skb);
461 break;
462 default:
6335ed0f
S		 463 dev_err(&hif_dev->udev->dev,
464 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
fb9987d0
S		 465 ret = -EINVAL;
466 break;
467 }
468
469 return ret;
470}
471
84c9e164
SM		 472static inline bool check_index(struct sk_buff *skb, u8 idx)
473{
474 struct ath9k_htc_tx_ctl *tx_ctl;
475
476 tx_ctl = HTC_SKB_CB(skb);
477
478 if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
479 (tx_ctl->sta_idx == idx))
480 return true;
481
482 return false;
483}
484
485static void hif_usb_sta_drain(void *hif_handle, u8 idx)
486{
487 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
488 struct sk_buff *skb, *tmp;
489 unsigned long flags;
490
491 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
492
493 skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
494 if (check_index(skb, idx)) {
495 __skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
496 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
497 skb, false);
498 hif_dev->tx.tx_skb_cnt--;
499 TX_STAT_INC(skb_failed);
500 }
501 }
502
503 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
504}
505
fb9987d0
S		 506static struct ath9k_htc_hif hif_usb = {
507 .transport = ATH9K_HIF_USB,
508 .name = "ath9k_hif_usb",
509
510 .control_ul_pipe = USB_REG_OUT_PIPE,
511 .control_dl_pipe = USB_REG_IN_PIPE,
512
513 .start = hif_usb_start,
514 .stop = hif_usb_stop,
84c9e164 515 .sta_drain = hif_usb_sta_drain,
fb9987d0
S		 516 .send = hif_usb_send,
517};
518
519static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
520 struct sk_buff *skb)
521{
c503269a 522 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
44b23b48
JP		 523 int index = 0, i = 0, len = skb->len;
524 int rx_remain_len, rx_pkt_len;
525 u16 pool_index = 0;
fb9987d0
S		 526 u8 *ptr;
527
46baa1a2
S		 528 spin_lock(&hif_dev->rx_lock);
529
fb9987d0
S		 530 rx_remain_len = hif_dev->rx_remain_len;
531 rx_pkt_len = hif_dev->rx_transfer_len;
532
533 if (rx_remain_len != 0) {
534 struct sk_buff *remain_skb = hif_dev->remain_skb;
535
536 if (remain_skb) {
537 ptr = (u8 *) remain_skb->data;
538
539 index = rx_remain_len;
540 rx_remain_len -= hif_dev->rx_pad_len;
541 ptr += rx_pkt_len;
542
543 memcpy(ptr, skb->data, rx_remain_len);
544
545 rx_pkt_len += rx_remain_len;
546 hif_dev->rx_remain_len = 0;
547 skb_put(remain_skb, rx_pkt_len);
548
549 skb_pool[pool_index++] = remain_skb;
550
551 } else {
552 index = rx_remain_len;
553 }
554 }
555
46baa1a2
S		 556 spin_unlock(&hif_dev->rx_lock);
557
fb9987d0 558 while (index < len) {
44b23b48
JP		 559 u16 pkt_len;
560 u16 pkt_tag;
561 u16 pad_len;
562 int chk_idx;
563
fb9987d0
S		 564 ptr = (u8 *) skb->data;
565
78fa99ab
PR		 566 pkt_len = get_unaligned_le16(ptr + index);
567 pkt_tag = get_unaligned_le16(ptr + index + 2);
fb9987d0 568
44b23b48
JP		 569 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
570 RX_STAT_INC(skb_dropped);
571 return;
572 }
573
574 pad_len = 4 - (pkt_len & 0x3);
575 if (pad_len == 4)
576 pad_len = 0;
577
578 chk_idx = index;
579 index = index + 4 + pkt_len + pad_len;
580
581 if (index > MAX_RX_BUF_SIZE) {
582 spin_lock(&hif_dev->rx_lock);
583 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
584 hif_dev->rx_transfer_len =
585 MAX_RX_BUF_SIZE - chk_idx - 4;
586 hif_dev->rx_pad_len = pad_len;
587
588 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
589 if (!nskb) {
590 dev_err(&hif_dev->udev->dev,
591 "ath9k_htc: RX memory allocation error\n");
46baa1a2 592 spin_unlock(&hif_dev->rx_lock);
44b23b48 593 goto err;
fb9987d0 594 }
44b23b48
JP		 595 skb_reserve(nskb, 32);
596 RX_STAT_INC(skb_allocated);
597
598 memcpy(nskb->data, &(skb->data[chk_idx+4]),
599 hif_dev->rx_transfer_len);
600
601 /* Record the buffer pointer */
602 hif_dev->remain_skb = nskb;
603 spin_unlock(&hif_dev->rx_lock);
fb9987d0 604 } else {
44b23b48
JP		 605 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
606 if (!nskb) {
607 dev_err(&hif_dev->udev->dev,
608 "ath9k_htc: RX memory allocation error\n");
609 goto err;
610 }
611 skb_reserve(nskb, 32);
612 RX_STAT_INC(skb_allocated);
613
614 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
615 skb_put(nskb, pkt_len);
616 skb_pool[pool_index++] = nskb;
fb9987d0
S		 617 }
618 }
619
620err:
fb9987d0
S		 621 for (i = 0; i < pool_index; i++) {
622 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
623 skb_pool[i]->len, USB_WLAN_RX_PIPE);
624 RX_STAT_INC(skb_completed);
625 }
626}
627
628static void ath9k_hif_usb_rx_cb(struct urb *urb)
629{
630 struct sk_buff *skb = (struct sk_buff *) urb->context;
b2767363 631 struct hif_device_usb *hif_dev =
fb9987d0
S		 632 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
633 int ret;
634
6335ed0f
S		 635 if (!skb)
636 return;
637
fb9987d0
S		 638 if (!hif_dev)
639 goto free;
640
641 switch (urb->status) {
642 case 0:
643 break;
644 case -ENOENT:
645 case -ECONNRESET:
646 case -ENODEV:
647 case -ESHUTDOWN:
648 goto free;
649 default:
650 goto resubmit;
651 }
652
653 if (likely(urb->actual_length != 0)) {
654 skb_put(skb, urb->actual_length);
fb9987d0 655 ath9k_hif_usb_rx_stream(hif_dev, skb);
fb9987d0
S		 656 }
657
658resubmit:
659 skb_reset_tail_pointer(skb);
660 skb_trim(skb, 0);
661
6335ed0f 662 usb_anchor_urb(urb, &hif_dev->rx_submitted);
fb9987d0 663 ret = usb_submit_urb(urb, GFP_ATOMIC);
6335ed0f
S		 664 if (ret) {
665 usb_unanchor_urb(urb);
fb9987d0 666 goto free;
6335ed0f 667 }
fb9987d0
S		 668
669 return;
670free:
f28a7b30 671 kfree_skb(skb);
fb9987d0
S		 672}
673
674static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
675{
676 struct sk_buff *skb = (struct sk_buff *) urb->context;
677 struct sk_buff *nskb;
b2767363 678 struct hif_device_usb *hif_dev =
fb9987d0
S		 679 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
680 int ret;
681
6335ed0f
S		 682 if (!skb)
683 return;
684
fb9987d0
S		 685 if (!hif_dev)
686 goto free;
687
688 switch (urb->status) {
689 case 0:
690 break;
691 case -ENOENT:
692 case -ECONNRESET:
693 case -ENODEV:
694 case -ESHUTDOWN:
695 goto free;
696 default:
3deff760
SM		 697 skb_reset_tail_pointer(skb);
698 skb_trim(skb, 0);
699
fb9987d0
S		 700 goto resubmit;
701 }
702
703 if (likely(urb->actual_length != 0)) {
704 skb_put(skb, urb->actual_length);
705
5ab0af32
S		 706 /* Process the command first */
707 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
708 skb->len, USB_REG_IN_PIPE);
709
710
e6c6d33c 711 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
5ab0af32
S		 712 if (!nskb) {
713 dev_err(&hif_dev->udev->dev,
714 "ath9k_htc: REG_IN memory allocation failure\n");
715 urb->context = NULL;
716 return;
717 }
fb9987d0 718
490b3f4e 719 usb_fill_bulk_urb(urb, hif_dev->udev,
0f529e98
RM		 720 usb_rcvbulkpipe(hif_dev->udev,
721 USB_REG_IN_PIPE),
fb9987d0 722 nskb->data, MAX_REG_IN_BUF_SIZE,
490b3f4e 723 ath9k_hif_usb_reg_in_cb, nskb);
fb9987d0
S		 724 }
725
726resubmit:
3deff760 727 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
fb9987d0 728 ret = usb_submit_urb(urb, GFP_ATOMIC);
3deff760
SM		 729 if (ret) {
730 usb_unanchor_urb(urb);
fb9987d0 731 goto free;
3deff760 732 }
fb9987d0
S		 733
734 return;
735free:
e6c6d33c 736 kfree_skb(skb);
6335ed0f 737 urb->context = NULL;
fb9987d0
S		 738}
739
740static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
741{
fb9987d0 742 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
ff8f59b5 743 unsigned long flags;
fb9987d0 744
c11d8f89
S		 745 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
746 &hif_dev->tx.tx_buf, list) {
747 usb_kill_urb(tx_buf->urb);
fb9987d0
S		 748 list_del(&tx_buf->list);
749 usb_free_urb(tx_buf->urb);
750 kfree(tx_buf->buf);
751 kfree(tx_buf);
752 }
753
ff8f59b5
SM		 754 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
755 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
756 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
757
fb9987d0
S		 758 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
759 &hif_dev->tx.tx_pending, list) {
760 usb_kill_urb(tx_buf->urb);
761 list_del(&tx_buf->list);
762 usb_free_urb(tx_buf->urb);
763 kfree(tx_buf->buf);
764 kfree(tx_buf);
765 }
2f80194c
SM		 766
767 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
fb9987d0
S		 768}
769
770static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
771{
772 struct tx_buf *tx_buf;
773 int i;
774
775 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
776 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
777 spin_lock_init(&hif_dev->tx.tx_lock);
778 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
2f80194c 779 init_usb_anchor(&hif_dev->mgmt_submitted);
fb9987d0
S		 780
781 for (i = 0; i < MAX_TX_URB_NUM; i++) {
782 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
783 if (!tx_buf)
784 goto err;
785
786 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
787 if (!tx_buf->buf)
788 goto err;
789
790 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
791 if (!tx_buf->urb)
792 goto err;
793
794 tx_buf->hif_dev = hif_dev;
795 __skb_queue_head_init(&tx_buf->skb_queue);
796
797 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
798 }
799
800 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
801
802 return 0;
803err:
7606688a
DC		 804 if (tx_buf) {
805 kfree(tx_buf->buf);
806 kfree(tx_buf);
807 }
fb9987d0
S		 808 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
809 return -ENOMEM;
810}
811
fb9987d0
S		 812static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
813{
6335ed0f 814 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
fb9987d0
S		 815}
816
817static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
818{
6335ed0f
S		 819 struct urb *urb = NULL;
820 struct sk_buff *skb = NULL;
fb9987d0
S		 821 int i, ret;
822
6335ed0f 823 init_usb_anchor(&hif_dev->rx_submitted);
46baa1a2 824 spin_lock_init(&hif_dev->rx_lock);
6335ed0f 825
fb9987d0
S		 826 for (i = 0; i < MAX_RX_URB_NUM; i++) {
827
828 /* Allocate URB */
6335ed0f
S		 829 urb = usb_alloc_urb(0, GFP_KERNEL);
830 if (urb == NULL) {
fb9987d0 831 ret = -ENOMEM;
6335ed0f 832 goto err_urb;
fb9987d0
S		 833 }
834
835 /* Allocate buffer */
f28a7b30 836 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
6335ed0f
S		 837 if (!skb) {
838 ret = -ENOMEM;
839 goto err_skb;
840 }
fb9987d0 841
6335ed0f
S		 842 usb_fill_bulk_urb(urb, hif_dev->udev,
843 usb_rcvbulkpipe(hif_dev->udev,
844 USB_WLAN_RX_PIPE),
845 skb->data, MAX_RX_BUF_SIZE,
846 ath9k_hif_usb_rx_cb, skb);
847
848 /* Anchor URB */
849 usb_anchor_urb(urb, &hif_dev->rx_submitted);
fb9987d0 850
6335ed0f
S		 851 /* Submit URB */
852 ret = usb_submit_urb(urb, GFP_KERNEL);
853 if (ret) {
854 usb_unanchor_urb(urb);
855 goto err_submit;
856 }
66b10e33
S		 857
858 /*
859 * Drop reference count.
860 * This ensures that the URB is freed when killing them.
861 */
862 usb_free_urb(urb);
fb9987d0
S		 863 }
864
865 return 0;
866
6335ed0f 867err_submit:
f28a7b30 868 kfree_skb(skb);
6335ed0f
S		 869err_skb:
870 usb_free_urb(urb);
871err_urb:
fb9987d0
S		 872 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
873 return ret;
874}
875
3deff760 876static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
fb9987d0 877{
3deff760 878 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
fb9987d0
S		 879}
880
3deff760 881static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
fb9987d0 882{
3deff760
SM		 883 struct urb *urb = NULL;
884 struct sk_buff *skb = NULL;
885 int i, ret;
fb9987d0 886
3deff760 887 init_usb_anchor(&hif_dev->reg_in_submitted);
fb9987d0 888
3deff760 889 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
fb9987d0 890
3deff760
SM		 891 /* Allocate URB */
892 urb = usb_alloc_urb(0, GFP_KERNEL);
893 if (urb == NULL) {
894 ret = -ENOMEM;
895 goto err_urb;
896 }
fb9987d0 897
3deff760
SM		 898 /* Allocate buffer */
899 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
900 if (!skb) {
901 ret = -ENOMEM;
902 goto err_skb;
903 }
904
905 usb_fill_bulk_urb(urb, hif_dev->udev,
906 usb_rcvbulkpipe(hif_dev->udev,
907 USB_REG_IN_PIPE),
908 skb->data, MAX_REG_IN_BUF_SIZE,
909 ath9k_hif_usb_reg_in_cb, skb);
910
911 /* Anchor URB */
912 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
913
914 /* Submit URB */
915 ret = usb_submit_urb(urb, GFP_KERNEL);
916 if (ret) {
917 usb_unanchor_urb(urb);
918 goto err_submit;
919 }
920
921 /*
922 * Drop reference count.
923 * This ensures that the URB is freed when killing them.
924 */
925 usb_free_urb(urb);
926 }
fb9987d0
S		 927
928 return 0;
929
3deff760
SM		 930err_submit:
931 kfree_skb(skb);
932err_skb:
933 usb_free_urb(urb);
934err_urb:
935 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
936 return ret;
fb9987d0
S		 937}
938
939static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
940{
6f0f2669
S		 941 /* Register Write */
942 init_usb_anchor(&hif_dev->regout_submitted);
943
fb9987d0
S		 944 /* TX */
945 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
946 goto err;
947
948 /* RX */
949 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
f8036965 950 goto err_rx;
fb9987d0 951
6f0f2669 952 /* Register Read */
3deff760 953 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
f8036965 954 goto err_reg;
fb9987d0
S		 955
956 return 0;
f8036965
RM		 957err_reg:
958 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
959err_rx:
960 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
fb9987d0
S		 961err:
962 return -ENOMEM;
963}
964
1d8af8ca
SM		 965static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
966{
967 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
3deff760 968 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1d8af8ca
SM		 969 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
970 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
971}
972
0ed7b93e 973static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
fb9987d0
S		 974{
975 int transfer, err;
976 const void *data = hif_dev->firmware->data;
977 size_t len = hif_dev->firmware->size;
978 u32 addr = AR9271_FIRMWARE;
979 u8 *buf = kzalloc(4096, GFP_KERNEL);
b1762862 980 u32 firm_offset;
fb9987d0
S		 981
982 if (!buf)
983 return -ENOMEM;
984
985 while (len) {
291689fc 986 transfer = min_t(size_t, len, 4096);
fb9987d0
S		 987 memcpy(buf, data, transfer);
988
989 err = usb_control_msg(hif_dev->udev,
990 usb_sndctrlpipe(hif_dev->udev, 0),
991 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
992 addr >> 8, 0, buf, transfer, HZ);
993 if (err < 0) {
994 kfree(buf);
995 return err;
996 }
997
998 len -= transfer;
999 data += transfer;
1000 addr += transfer;
1001 }
1002 kfree(buf);
1003
0ed7b93e 1004 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
b1762862 1005 firm_offset = AR7010_FIRMWARE_TEXT;
fa6e15e0 1006 else
b1762862
S		 1007 firm_offset = AR9271_FIRMWARE_TEXT;
1008
fb9987d0
S		 1009 /*
1010 * Issue FW download complete command to firmware.
1011 */
1012 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1013 FIRMWARE_DOWNLOAD_COMP,
1014 0x40 | USB_DIR_OUT,
b1762862 1015 firm_offset >> 8, 0, NULL, 0, HZ);
fb9987d0
S		 1016 if (err)
1017 return -EIO;
1018
1019 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
ce43cee5 1020 hif_dev->fw_name, (unsigned long) hif_dev->firmware->size);
fb9987d0
S		 1021
1022 return 0;
1023}
1024
0ed7b93e 1025static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
fb9987d0 1026{
4a0e8ecc
RM		 1027 struct usb_host_interface *alt = &hif_dev->interface->altsetting[0];
1028 struct usb_endpoint_descriptor *endp;
0ed7b93e 1029 int ret, idx;
fb9987d0 1030
0ed7b93e 1031 ret = ath9k_hif_usb_download_fw(hif_dev);
1d8af8ca
SM		 1032 if (ret) {
1033 dev_err(&hif_dev->udev->dev,
ce43cee5
S		 1034 "ath9k_htc: Firmware - %s download failed\n",
1035 hif_dev->fw_name);
0ed7b93e 1036 return ret;
1d8af8ca
SM		 1037 }
1038
4a0e8ecc
RM		 1039 /* On downloading the firmware to the target, the USB descriptor of EP4
1040 * is 'patched' to change the type of the endpoint to Bulk. This will
1041 * bring down CPU usage during the scan period.
1042 */
1043 for (idx = 0; idx < alt->desc.bNumEndpoints; idx++) {
1044 endp = &alt->endpoint[idx].desc;
490b3f4e
RM		 1045 if ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1046 == USB_ENDPOINT_XFER_INT) {
4a0e8ecc
RM		 1047 endp->bmAttributes &= ~USB_ENDPOINT_XFERTYPE_MASK;
1048 endp->bmAttributes |= USB_ENDPOINT_XFER_BULK;
1049 endp->bInterval = 0;
1050 }
1051 }
1052
490b3f4e
RM		 1053 /* Alloc URBs */
1054 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1055 if (ret) {
1056 dev_err(&hif_dev->udev->dev,
1057 "ath9k_htc: Unable to allocate URBs\n");
0ed7b93e 1058 return ret;
490b3f4e
RM		 1059 }
1060
fb9987d0 1061 return 0;
fb9987d0
S		 1062}
1063
fb9987d0
S		 1064static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1065{
1066 ath9k_hif_usb_dealloc_urbs(hif_dev);
0ed7b93e
SM		 1067}
1068
1069/*
1070 * If initialization fails or the FW cannot be retrieved,
1071 * detach the device.
1072 */
1073static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1074{
1075 struct device *parent = hif_dev->udev->dev.parent;
1076
1077 complete(&hif_dev->fw_done);
1078
1079 if (parent)
1080 device_lock(parent);
1081
1082 device_release_driver(&hif_dev->udev->dev);
1083
1084 if (parent)
1085 device_unlock(parent);
1086}
1087
1088static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1089{
1090 struct hif_device_usb *hif_dev = context;
1091 int ret;
1092
1093 if (!fw) {
1094 dev_err(&hif_dev->udev->dev,
1095 "ath9k_htc: Failed to get firmware %s\n",
1096 hif_dev->fw_name);
1097 goto err_fw;
1098 }
1099
1100 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1101 &hif_dev->udev->dev);
1102 if (hif_dev->htc_handle == NULL) {
1103 goto err_fw;
1104 }
1105
1106 hif_dev->firmware = fw;
1107
1108 /* Proceed with initialization */
1109
1110 ret = ath9k_hif_usb_dev_init(hif_dev);
1111 if (ret)
1112 goto err_dev_init;
1113
1114 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1115 &hif_dev->interface->dev,
1116 hif_dev->usb_device_id->idProduct,
1117 hif_dev->udev->product,
1118 hif_dev->usb_device_id->driver_info);
1119 if (ret) {
1120 ret = -EINVAL;
1121 goto err_htc_hw_init;
1122 }
1123
1124 complete(&hif_dev->fw_done);
1125
1126 return;
1127
1128err_htc_hw_init:
1129 ath9k_hif_usb_dev_deinit(hif_dev);
1130err_dev_init:
1131 ath9k_htc_hw_free(hif_dev->htc_handle);
1132 release_firmware(fw);
1133 hif_dev->firmware = NULL;
1134err_fw:
1135 ath9k_hif_usb_firmware_fail(hif_dev);
fb9987d0
S		 1136}
1137
36bcce43
SM		 1138/*
1139 * An exact copy of the function from zd1211rw.
1140 */
1141static int send_eject_command(struct usb_interface *interface)
1142{
1143 struct usb_device *udev = interface_to_usbdev(interface);
1144 struct usb_host_interface *iface_desc = &interface->altsetting[0];
1145 struct usb_endpoint_descriptor *endpoint;
1146 unsigned char *cmd;
1147 u8 bulk_out_ep;
1148 int r;
1149
1150 /* Find bulk out endpoint */
1151 for (r = 1; r >= 0; r--) {
1152 endpoint = &iface_desc->endpoint[r].desc;
1153 if (usb_endpoint_dir_out(endpoint) &&
1154 usb_endpoint_xfer_bulk(endpoint)) {
1155 bulk_out_ep = endpoint->bEndpointAddress;
1156 break;
1157 }
1158 }
1159 if (r == -1) {
1160 dev_err(&udev->dev,
1161 "ath9k_htc: Could not find bulk out endpoint\n");
1162 return -ENODEV;
1163 }
1164
1165 cmd = kzalloc(31, GFP_KERNEL);
1166 if (cmd == NULL)
1167 return -ENODEV;
1168
1169 /* USB bulk command block */
1170 cmd[0] = 0x55; /* bulk command signature */
1171 cmd[1] = 0x53; /* bulk command signature */
1172 cmd[2] = 0x42; /* bulk command signature */
1173 cmd[3] = 0x43; /* bulk command signature */
1174 cmd[14] = 6; /* command length */
1175
1176 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
1177 cmd[19] = 0x2; /* eject disc */
1178
1179 dev_info(&udev->dev, "Ejecting storage device...\n");
1180 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1181 cmd, 31, NULL, 2000);
1182 kfree(cmd);
1183 if (r)
1184 return r;
1185
1186 /* At this point, the device disconnects and reconnects with the real
1187 * ID numbers. */
1188
1189 usb_set_intfdata(interface, NULL);
1190 return 0;
1191}
1192
fb9987d0
S		 1193static int ath9k_hif_usb_probe(struct usb_interface *interface,
1194 const struct usb_device_id *id)
1195{
1196 struct usb_device *udev = interface_to_usbdev(interface);
1197 struct hif_device_usb *hif_dev;
fb9987d0
S		 1198 int ret = 0;
1199
36bcce43
SM		 1200 if (id->driver_info == STORAGE_DEVICE)
1201 return send_eject_command(interface);
1202
fb9987d0
S		 1203 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1204 if (!hif_dev) {
1205 ret = -ENOMEM;
1206 goto err_alloc;
1207 }
1208
1209 usb_get_dev(udev);
0ed7b93e 1210
fb9987d0
S		 1211 hif_dev->udev = udev;
1212 hif_dev->interface = interface;
0ed7b93e 1213 hif_dev->usb_device_id = id;
fb9987d0
S		 1214#ifdef CONFIG_PM
1215 udev->reset_resume = 1;
1216#endif
1217 usb_set_intfdata(interface, hif_dev);
1218
0ed7b93e 1219 init_completion(&hif_dev->fw_done);
47fce026 1220
ce43cee5
S		 1221 /* Find out which firmware to load */
1222
0b5ead91 1223 if (IS_AR7010_DEVICE(id->driver_info))
9efabad2 1224 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
fa6e15e0 1225 else
d0ee0ebe 1226 hif_dev->fw_name = FIRMWARE_AR9271;
ce43cee5 1227
0ed7b93e
SM		 1228 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1229 &hif_dev->udev->dev, GFP_KERNEL,
1230 hif_dev, ath9k_hif_usb_firmware_cb);
fb9987d0 1231 if (ret) {
0ed7b93e
SM		 1232 dev_err(&hif_dev->udev->dev,
1233 "ath9k_htc: Async request for firmware %s failed\n",
1234 hif_dev->fw_name);
1235 goto err_fw_req;
fb9987d0
S		 1236 }
1237
0ed7b93e
SM		 1238 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1239 hif_dev->fw_name);
fb9987d0
S		 1240
1241 return 0;
1242
0ed7b93e 1243err_fw_req:
fb9987d0
S		 1244 usb_set_intfdata(interface, NULL);
1245 kfree(hif_dev);
1246 usb_put_dev(udev);
1247err_alloc:
1248 return ret;
1249}
1250
62e4716a
S		 1251static void ath9k_hif_usb_reboot(struct usb_device *udev)
1252{
1253 u32 reboot_cmd = 0xffffffff;
1254 void *buf;
1255 int ret;
1256
a465a2cc 1257 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
62e4716a
S		 1258 if (!buf)
1259 return;
1260
62e4716a
S		 1261 ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
1262 buf, 4, NULL, HZ);
1263 if (ret)
1264 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1265
1266 kfree(buf);
1267}
1268
fb9987d0
S		 1269static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1270{
1271 struct usb_device *udev = interface_to_usbdev(interface);
b2767363 1272 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
97dcec57 1273 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
fb9987d0 1274
36bcce43
SM		 1275 if (!hif_dev)
1276 return;
1277
0ed7b93e
SM		 1278 wait_for_completion(&hif_dev->fw_done);
1279
1280 if (hif_dev->firmware) {
1281 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1282 ath9k_htc_hw_free(hif_dev->htc_handle);
1283 ath9k_hif_usb_dev_deinit(hif_dev);
1284 release_firmware(hif_dev->firmware);
1285 }
1286
36bcce43 1287 usb_set_intfdata(interface, NULL);
fb9987d0 1288
97dcec57 1289 if (!unplugged && (hif_dev->flags & HIF_USB_START))
62e4716a 1290 ath9k_hif_usb_reboot(udev);
fb9987d0
S		 1291
1292 kfree(hif_dev);
1293 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1294 usb_put_dev(udev);
1295}
1296
1297#ifdef CONFIG_PM
1298static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1299 pm_message_t message)
1300{
b2767363 1301 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
fb9987d0 1302
f933ebed
SM		 1303 /*
1304 * The device has to be set to FULLSLEEP mode in case no
1305 * interface is up.
1306 */
1307 if (!(hif_dev->flags & HIF_USB_START))
1308 ath9k_htc_suspend(hif_dev->htc_handle);
1309
fb9987d0
S		 1310 ath9k_hif_usb_dealloc_urbs(hif_dev);
1311
1312 return 0;
1313}
1314
1315static int ath9k_hif_usb_resume(struct usb_interface *interface)
1316{
b2767363 1317 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
fa6e15e0 1318 struct htc_target *htc_handle = hif_dev->htc_handle;
fb9987d0
S		 1319 int ret;
1320
1321 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1322 if (ret)
1323 return ret;
1324
1325 if (hif_dev->firmware) {
0ed7b93e 1326 ret = ath9k_hif_usb_download_fw(hif_dev);
fb9987d0
S		 1327 if (ret)
1328 goto fail_resume;
1329 } else {
1330 ath9k_hif_usb_dealloc_urbs(hif_dev);
1331 return -EIO;
1332 }
1333
1334 mdelay(100);
1335
fa6e15e0 1336 ret = ath9k_htc_resume(htc_handle);
fb9987d0
S		 1337
1338 if (ret)
1339 goto fail_resume;
1340
1341 return 0;
1342
1343fail_resume:
1344 ath9k_hif_usb_dealloc_urbs(hif_dev);
1345
1346 return ret;
1347}
1348#endif
1349
1350static struct usb_driver ath9k_hif_usb_driver = {
50f68712 1351 .name = KBUILD_MODNAME,
fb9987d0
S		 1352 .probe = ath9k_hif_usb_probe,
1353 .disconnect = ath9k_hif_usb_disconnect,
1354#ifdef CONFIG_PM
1355 .suspend = ath9k_hif_usb_suspend,
1356 .resume = ath9k_hif_usb_resume,
1357 .reset_resume = ath9k_hif_usb_resume,
1358#endif
1359 .id_table = ath9k_hif_usb_ids,
1360 .soft_unbind = 1,
e1f12eb6 1361 .disable_hub_initiated_lpm = 1,
fb9987d0
S		 1362};
1363
1364int ath9k_hif_usb_init(void)
1365{
1366 return usb_register(&ath9k_hif_usb_driver);
1367}
1368
1369void ath9k_hif_usb_exit(void)
1370{
1371 usb_deregister(&ath9k_hif_usb_driver);
1372}
Linux kernel - Deliverables
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