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ath9k: move ath9k_spectral_scan_ from main.c to spectral.c
[linux-2.6-block.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 */
763cbac0 41 { USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */
8c34559b 42 { USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */
0b5ead91
SM		 43
44 { USB_DEVICE(0x0cf3, 0x7015),
45 .driver_info = AR9287_USB }, /* Atheros */
64f12170 46 { USB_DEVICE(0x1668, 0x1200),
0b5ead91
SM		 47 .driver_info = AR9287_USB }, /* Verizon */
48
49 { USB_DEVICE(0x0cf3, 0x7010),
50 .driver_info = AR9280_USB }, /* Atheros */
51 { USB_DEVICE(0x0846, 0x9018),
52 .driver_info = AR9280_USB }, /* Netgear WNDA3200 */
53 { USB_DEVICE(0x083A, 0xA704),
54 .driver_info = AR9280_USB }, /* SMC Networks */
5cf6fa78
MSS		 55 { USB_DEVICE(0x0411, 0x017f),
56 .driver_info = AR9280_USB }, /* Sony UWA-BR100 */
98f99eea
MT		 57 { USB_DEVICE(0x0411, 0x0197),
58 .driver_info = AR9280_USB }, /* Buffalo WLI-UV-AG300P */
d90b5708
SM		 59 { USB_DEVICE(0x04da, 0x3904),
60 .driver_info = AR9280_USB },
0b5ead91 61
36bcce43
SM		 62 { USB_DEVICE(0x0cf3, 0x20ff),
63 .driver_info = STORAGE_DEVICE },
64
fb9987d0
S		 65 { },
66};
67
68MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
69
70static int __hif_usb_tx(struct hif_device_usb *hif_dev);
71
72static void hif_usb_regout_cb(struct urb *urb)
73{
74 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
fb9987d0
S		 75
76 switch (urb->status) {
77 case 0:
78 break;
79 case -ENOENT:
80 case -ECONNRESET:
fb9987d0
S		 81 case -ENODEV:
82 case -ESHUTDOWN:
6f0f2669 83 goto free;
fb9987d0
S		 84 default:
85 break;
86 }
87
88 if (cmd) {
89 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
2f80194c 90 cmd->skb, true);
fb9987d0 91 kfree(cmd);
fb9987d0 92 }
6f0f2669
S		 93
94 return;
95free:
0fa35a58 96 kfree_skb(cmd->skb);
6f0f2669 97 kfree(cmd);
fb9987d0
S		 98}
99
100static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
101 struct sk_buff *skb)
102{
103 struct urb *urb;
104 struct cmd_buf *cmd;
105 int ret = 0;
106
107 urb = usb_alloc_urb(0, GFP_KERNEL);
108 if (urb == NULL)
109 return -ENOMEM;
110
111 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
112 if (cmd == NULL) {
113 usb_free_urb(urb);
114 return -ENOMEM;
115 }
116
117 cmd->skb = skb;
118 cmd->hif_dev = hif_dev;
119
2b721118
OR		 120 usb_fill_int_urb(urb, hif_dev->udev,
121 usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
fb9987d0 122 skb->data, skb->len,
2b721118 123 hif_usb_regout_cb, cmd, 1);
fb9987d0 124
6f0f2669 125 usb_anchor_urb(urb, &hif_dev->regout_submitted);
fb9987d0
S		 126 ret = usb_submit_urb(urb, GFP_KERNEL);
127 if (ret) {
6f0f2669 128 usb_unanchor_urb(urb);
fb9987d0
S		 129 kfree(cmd);
130 }
6f0f2669 131 usb_free_urb(urb);
fb9987d0
S		 132
133 return ret;
134}
135
2f80194c
SM		 136static void hif_usb_mgmt_cb(struct urb *urb)
137{
138 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
02c5172c 139 struct hif_device_usb *hif_dev;
2f80194c
SM		 140 bool txok = true;
141
142 if (!cmd || !cmd->skb || !cmd->hif_dev)
143 return;
144
02c5172c
RM		 145 hif_dev = cmd->hif_dev;
146
2f80194c
SM		 147 switch (urb->status) {
148 case 0:
149 break;
150 case -ENOENT:
151 case -ECONNRESET:
152 case -ENODEV:
153 case -ESHUTDOWN:
154 txok = false;
155
156 /*
157 * If the URBs are being flushed, no need to complete
158 * this packet.
159 */
160 spin_lock(&hif_dev->tx.tx_lock);
161 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
162 spin_unlock(&hif_dev->tx.tx_lock);
163 dev_kfree_skb_any(cmd->skb);
164 kfree(cmd);
165 return;
166 }
167 spin_unlock(&hif_dev->tx.tx_lock);
168
169 break;
170 default:
171 txok = false;
172 break;
173 }
174
175 skb_pull(cmd->skb, 4);
176 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
177 cmd->skb, txok);
178 kfree(cmd);
179}
180
181static int hif_usb_send_mgmt(struct hif_device_usb *hif_dev,
182 struct sk_buff *skb)
183{
184 struct urb *urb;
185 struct cmd_buf *cmd;
186 int ret = 0;
187 __le16 *hdr;
188
189 urb = usb_alloc_urb(0, GFP_ATOMIC);
190 if (urb == NULL)
191 return -ENOMEM;
192
193 cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
194 if (cmd == NULL) {
195 usb_free_urb(urb);
196 return -ENOMEM;
197 }
198
199 cmd->skb = skb;
200 cmd->hif_dev = hif_dev;
201
202 hdr = (__le16 *) skb_push(skb, 4);
203 *hdr++ = cpu_to_le16(skb->len - 4);
204 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
205
206 usb_fill_bulk_urb(urb, hif_dev->udev,
207 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
208 skb->data, skb->len,
209 hif_usb_mgmt_cb, cmd);
210
211 usb_anchor_urb(urb, &hif_dev->mgmt_submitted);
212 ret = usb_submit_urb(urb, GFP_ATOMIC);
213 if (ret) {
214 usb_unanchor_urb(urb);
215 kfree(cmd);
216 }
217 usb_free_urb(urb);
218
219 return ret;
220}
221
c11d8f89
S		 222static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
223 struct sk_buff_head *list)
224{
225 struct sk_buff *skb;
226
227 while ((skb = __skb_dequeue(list)) != NULL) {
228 dev_kfree_skb_any(skb);
b587fc81
SM		 229 }
230}
231
232static inline void ath9k_skb_queue_complete(struct hif_device_usb *hif_dev,
233 struct sk_buff_head *queue,
234 bool txok)
235{
236 struct sk_buff *skb;
237
238 while ((skb = __skb_dequeue(queue)) != NULL) {
68185a4b
BG		 239#ifdef CONFIG_ATH9K_HTC_DEBUGFS
240 int ln = skb->len;
241#endif
b587fc81
SM		 242 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
243 skb, txok);
68185a4b 244 if (txok) {
dfa8fc69 245 TX_STAT_INC(skb_success);
68185a4b
BG		 246 TX_STAT_ADD(skb_success_bytes, ln);
247 }
dfa8fc69
JL		 248 else
249 TX_STAT_INC(skb_failed);
c11d8f89
S		 250 }
251}
252
fb9987d0
S		 253static void hif_usb_tx_cb(struct urb *urb)
254{
255 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
690e781c 256 struct hif_device_usb *hif_dev;
b587fc81 257 bool txok = true;
fb9987d0 258
690e781c 259 if (!tx_buf || !tx_buf->hif_dev)
fb9987d0
S		 260 return;
261
690e781c
DC		 262 hif_dev = tx_buf->hif_dev;
263
fb9987d0
S		 264 switch (urb->status) {
265 case 0:
266 break;
267 case -ENOENT:
268 case -ECONNRESET:
fb9987d0
S		 269 case -ENODEV:
270 case -ESHUTDOWN:
b587fc81 271 txok = false;
ff8f59b5
SM		 272
273 /*
274 * If the URBs are being flushed, no need to add this
275 * URB to the free list.
276 */
277 spin_lock(&hif_dev->tx.tx_lock);
278 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
279 spin_unlock(&hif_dev->tx.tx_lock);
b587fc81 280 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
ff8f59b5
SM		 281 return;
282 }
283 spin_unlock(&hif_dev->tx.tx_lock);
284
b587fc81 285 break;
fb9987d0 286 default:
b587fc81 287 txok = false;
fb9987d0
S		 288 break;
289 }
290
b587fc81 291 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, txok);
c11d8f89 292
c11d8f89
S		 293 /* Re-initialize the SKB queue */
294 tx_buf->len = tx_buf->offset = 0;
295 __skb_queue_head_init(&tx_buf->skb_queue);
296
297 /* Add this TX buffer to the free list */
298 spin_lock(&hif_dev->tx.tx_lock);
299 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
300 hif_dev->tx.tx_buf_cnt++;
301 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
302 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
303 TX_STAT_INC(buf_completed);
304 spin_unlock(&hif_dev->tx.tx_lock);
f8e1d080
ML		 305}
306
fb9987d0
S		 307/* TX lock has to be taken */
308static int __hif_usb_tx(struct hif_device_usb *hif_dev)
309{
310 struct tx_buf *tx_buf = NULL;
311 struct sk_buff *nskb = NULL;
312 int ret = 0, i;
2c27392d 313 u16 tx_skb_cnt = 0;
fb9987d0 314 u8 *buf;
2c27392d 315 __le16 *hdr;
fb9987d0
S		 316
317 if (hif_dev->tx.tx_skb_cnt == 0)
318 return 0;
319
320 /* Check if a free TX buffer is available */
321 if (list_empty(&hif_dev->tx.tx_buf))
322 return 0;
323
324 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
c11d8f89 325 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
fb9987d0
S		 326 hif_dev->tx.tx_buf_cnt--;
327
328 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
329
330 for (i = 0; i < tx_skb_cnt; i++) {
331 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
332
333 /* Should never be NULL */
334 BUG_ON(!nskb);
335
336 hif_dev->tx.tx_skb_cnt--;
337
338 buf = tx_buf->buf;
339 buf += tx_buf->offset;
2c27392d
SM		 340 hdr = (__le16 *)buf;
341 *hdr++ = cpu_to_le16(nskb->len);
342 *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG);
fb9987d0
S		 343 buf += 4;
344 memcpy(buf, nskb->data, nskb->len);
345 tx_buf->len = nskb->len + 4;
346
347 if (i < (tx_skb_cnt - 1))
348 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
349
350 if (i == (tx_skb_cnt - 1))
351 tx_buf->len += tx_buf->offset;
352
353 __skb_queue_tail(&tx_buf->skb_queue, nskb);
354 TX_STAT_INC(skb_queued);
355 }
356
357 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
358 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
359 tx_buf->buf, tx_buf->len,
360 hif_usb_tx_cb, tx_buf);
361
362 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
363 if (ret) {
364 tx_buf->len = tx_buf->offset = 0;
b587fc81 365 ath9k_skb_queue_complete(hif_dev, &tx_buf->skb_queue, false);
fb9987d0
S		 366 __skb_queue_head_init(&tx_buf->skb_queue);
367 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
368 hif_dev->tx.tx_buf_cnt++;
369 }
370
371 if (!ret)
372 TX_STAT_INC(buf_queued);
373
374 return ret;
375}
376
40dc9e4b 377static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
fb9987d0 378{
40dc9e4b 379 struct ath9k_htc_tx_ctl *tx_ctl;
fb9987d0 380 unsigned long flags;
2f80194c 381 int ret = 0;
fb9987d0
S		 382
383 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
384
385 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
386 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
387 return -ENODEV;
388 }
389
390 /* Check if the max queue count has been reached */
391 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
392 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
393 return -ENOMEM;
394 }
395
2f80194c 396 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
fb9987d0 397
40dc9e4b
SM		 398 tx_ctl = HTC_SKB_CB(skb);
399
2f80194c
SM		 400 /* Mgmt/Beacon frames don't use the TX buffer pool */
401 if ((tx_ctl->type == ATH9K_HTC_MGMT) ||
402 (tx_ctl->type == ATH9K_HTC_BEACON)) {
403 ret = hif_usb_send_mgmt(hif_dev, skb);
404 }
405
406 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
407
408 if ((tx_ctl->type == ATH9K_HTC_NORMAL) ||
409 (tx_ctl->type == ATH9K_HTC_AMPDU)) {
410 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
411 hif_dev->tx.tx_skb_cnt++;
412 }
fb9987d0
S		 413
414 /* Check if AMPDUs have to be sent immediately */
2f80194c 415 if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
fb9987d0
S		 416 (hif_dev->tx.tx_skb_cnt < 2)) {
417 __hif_usb_tx(hif_dev);
418 }
419
420 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
421
2f80194c 422 return ret;
fb9987d0
S		 423}
424
e1fe7c38 425static void hif_usb_start(void *hif_handle)
fb9987d0
S		 426{
427 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
428 unsigned long flags;
429
430 hif_dev->flags |= HIF_USB_START;
431
432 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
433 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
434 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
435}
436
e1fe7c38 437static void hif_usb_stop(void *hif_handle)
fb9987d0
S		 438{
439 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
ff8f59b5 440 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
fb9987d0
S		 441 unsigned long flags;
442
443 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
b587fc81 444 ath9k_skb_queue_complete(hif_dev, &hif_dev->tx.tx_skb_queue, false);
fb9987d0
S		 445 hif_dev->tx.tx_skb_cnt = 0;
446 hif_dev->tx.flags |= HIF_USB_TX_STOP;
447 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
ff8f59b5
SM		 448
449 /* The pending URBs have to be canceled. */
450 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
451 &hif_dev->tx.tx_pending, list) {
452 usb_kill_urb(tx_buf->urb);
453 }
2f80194c
SM		 454
455 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
fb9987d0
S		 456}
457
40dc9e4b 458static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
fb9987d0
S		 459{
460 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
461 int ret = 0;
462
463 switch (pipe_id) {
464 case USB_WLAN_TX_PIPE:
40dc9e4b 465 ret = hif_usb_send_tx(hif_dev, skb);
fb9987d0
S		 466 break;
467 case USB_REG_OUT_PIPE:
468 ret = hif_usb_send_regout(hif_dev, skb);
469 break;
470 default:
6335ed0f
S		 471 dev_err(&hif_dev->udev->dev,
472 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
fb9987d0
S		 473 ret = -EINVAL;
474 break;
475 }
476
477 return ret;
478}
479
84c9e164
SM		 480static inline bool check_index(struct sk_buff *skb, u8 idx)
481{
482 struct ath9k_htc_tx_ctl *tx_ctl;
483
484 tx_ctl = HTC_SKB_CB(skb);
485
486 if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
487 (tx_ctl->sta_idx == idx))
488 return true;
489
490 return false;
491}
492
493static void hif_usb_sta_drain(void *hif_handle, u8 idx)
494{
495 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
496 struct sk_buff *skb, *tmp;
497 unsigned long flags;
498
499 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
500
501 skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) {
502 if (check_index(skb, idx)) {
503 __skb_unlink(skb, &hif_dev->tx.tx_skb_queue);
504 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
505 skb, false);
506 hif_dev->tx.tx_skb_cnt--;
507 TX_STAT_INC(skb_failed);
508 }
509 }
510
511 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
512}
513
fb9987d0
S		 514static struct ath9k_htc_hif hif_usb = {
515 .transport = ATH9K_HIF_USB,
516 .name = "ath9k_hif_usb",
517
518 .control_ul_pipe = USB_REG_OUT_PIPE,
519 .control_dl_pipe = USB_REG_IN_PIPE,
520
521 .start = hif_usb_start,
522 .stop = hif_usb_stop,
84c9e164 523 .sta_drain = hif_usb_sta_drain,
fb9987d0
S		 524 .send = hif_usb_send,
525};
526
527static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
528 struct sk_buff *skb)
529{
c503269a 530 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
44b23b48
JP		 531 int index = 0, i = 0, len = skb->len;
532 int rx_remain_len, rx_pkt_len;
533 u16 pool_index = 0;
fb9987d0
S		 534 u8 *ptr;
535
46baa1a2
S		 536 spin_lock(&hif_dev->rx_lock);
537
fb9987d0
S		 538 rx_remain_len = hif_dev->rx_remain_len;
539 rx_pkt_len = hif_dev->rx_transfer_len;
540
541 if (rx_remain_len != 0) {
542 struct sk_buff *remain_skb = hif_dev->remain_skb;
543
544 if (remain_skb) {
545 ptr = (u8 *) remain_skb->data;
546
547 index = rx_remain_len;
548 rx_remain_len -= hif_dev->rx_pad_len;
549 ptr += rx_pkt_len;
550
551 memcpy(ptr, skb->data, rx_remain_len);
552
553 rx_pkt_len += rx_remain_len;
554 hif_dev->rx_remain_len = 0;
555 skb_put(remain_skb, rx_pkt_len);
556
557 skb_pool[pool_index++] = remain_skb;
558
559 } else {
560 index = rx_remain_len;
561 }
562 }
563
46baa1a2
S		 564 spin_unlock(&hif_dev->rx_lock);
565
fb9987d0 566 while (index < len) {
44b23b48
JP		 567 u16 pkt_len;
568 u16 pkt_tag;
569 u16 pad_len;
570 int chk_idx;
571
fb9987d0
S		 572 ptr = (u8 *) skb->data;
573
78fa99ab
PR		 574 pkt_len = get_unaligned_le16(ptr + index);
575 pkt_tag = get_unaligned_le16(ptr + index + 2);
fb9987d0 576
44b23b48
JP		 577 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
578 RX_STAT_INC(skb_dropped);
579 return;
580 }
581
582 pad_len = 4 - (pkt_len & 0x3);
583 if (pad_len == 4)
584 pad_len = 0;
585
586 chk_idx = index;
587 index = index + 4 + pkt_len + pad_len;
588
589 if (index > MAX_RX_BUF_SIZE) {
590 spin_lock(&hif_dev->rx_lock);
591 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
592 hif_dev->rx_transfer_len =
593 MAX_RX_BUF_SIZE - chk_idx - 4;
594 hif_dev->rx_pad_len = pad_len;
595
596 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
597 if (!nskb) {
598 dev_err(&hif_dev->udev->dev,
599 "ath9k_htc: RX memory allocation error\n");
46baa1a2 600 spin_unlock(&hif_dev->rx_lock);
44b23b48 601 goto err;
fb9987d0 602 }
44b23b48
JP		 603 skb_reserve(nskb, 32);
604 RX_STAT_INC(skb_allocated);
605
606 memcpy(nskb->data, &(skb->data[chk_idx+4]),
607 hif_dev->rx_transfer_len);
608
609 /* Record the buffer pointer */
610 hif_dev->remain_skb = nskb;
611 spin_unlock(&hif_dev->rx_lock);
fb9987d0 612 } else {
44b23b48
JP		 613 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
614 if (!nskb) {
615 dev_err(&hif_dev->udev->dev,
616 "ath9k_htc: RX memory allocation error\n");
617 goto err;
618 }
619 skb_reserve(nskb, 32);
620 RX_STAT_INC(skb_allocated);
621
622 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
623 skb_put(nskb, pkt_len);
624 skb_pool[pool_index++] = nskb;
fb9987d0
S		 625 }
626 }
627
628err:
fb9987d0 629 for (i = 0; i < pool_index; i++) {
68185a4b 630 RX_STAT_ADD(skb_completed_bytes, skb_pool[i]->len);
fb9987d0
S		 631 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
632 skb_pool[i]->len, USB_WLAN_RX_PIPE);
633 RX_STAT_INC(skb_completed);
634 }
635}
636
637static void ath9k_hif_usb_rx_cb(struct urb *urb)
638{
639 struct sk_buff *skb = (struct sk_buff *) urb->context;
b2767363 640 struct hif_device_usb *hif_dev =
fb9987d0
S		 641 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
642 int ret;
643
6335ed0f
S		 644 if (!skb)
645 return;
646
fb9987d0
S		 647 if (!hif_dev)
648 goto free;
649
650 switch (urb->status) {
651 case 0:
652 break;
653 case -ENOENT:
654 case -ECONNRESET:
655 case -ENODEV:
656 case -ESHUTDOWN:
657 goto free;
658 default:
659 goto resubmit;
660 }
661
662 if (likely(urb->actual_length != 0)) {
663 skb_put(skb, urb->actual_length);
fb9987d0 664 ath9k_hif_usb_rx_stream(hif_dev, skb);
fb9987d0
S		 665 }
666
667resubmit:
668 skb_reset_tail_pointer(skb);
669 skb_trim(skb, 0);
670
6335ed0f 671 usb_anchor_urb(urb, &hif_dev->rx_submitted);
fb9987d0 672 ret = usb_submit_urb(urb, GFP_ATOMIC);
6335ed0f
S		 673 if (ret) {
674 usb_unanchor_urb(urb);
fb9987d0 675 goto free;
6335ed0f 676 }
fb9987d0
S		 677
678 return;
679free:
f28a7b30 680 kfree_skb(skb);
fb9987d0
S		 681}
682
683static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
684{
685 struct sk_buff *skb = (struct sk_buff *) urb->context;
686 struct sk_buff *nskb;
b2767363 687 struct hif_device_usb *hif_dev =
fb9987d0
S		 688 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
689 int ret;
690
6335ed0f
S		 691 if (!skb)
692 return;
693
fb9987d0
S		 694 if (!hif_dev)
695 goto free;
696
697 switch (urb->status) {
698 case 0:
699 break;
700 case -ENOENT:
701 case -ECONNRESET:
702 case -ENODEV:
703 case -ESHUTDOWN:
704 goto free;
705 default:
3deff760
SM		 706 skb_reset_tail_pointer(skb);
707 skb_trim(skb, 0);
708
fb9987d0
S		 709 goto resubmit;
710 }
711
712 if (likely(urb->actual_length != 0)) {
713 skb_put(skb, urb->actual_length);
714
5ab0af32
S		 715 /* Process the command first */
716 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
717 skb->len, USB_REG_IN_PIPE);
718
719
e6c6d33c 720 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
5ab0af32
S		 721 if (!nskb) {
722 dev_err(&hif_dev->udev->dev,
723 "ath9k_htc: REG_IN memory allocation failure\n");
724 urb->context = NULL;
725 return;
726 }
fb9987d0 727
2b721118
OR		 728 usb_fill_int_urb(urb, hif_dev->udev,
729 usb_rcvintpipe(hif_dev->udev,
0f529e98 730 USB_REG_IN_PIPE),
fb9987d0 731 nskb->data, MAX_REG_IN_BUF_SIZE,
2b721118 732 ath9k_hif_usb_reg_in_cb, nskb, 1);
fb9987d0
S		 733 }
734
735resubmit:
3deff760 736 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
fb9987d0 737 ret = usb_submit_urb(urb, GFP_ATOMIC);
3deff760
SM		 738 if (ret) {
739 usb_unanchor_urb(urb);
fb9987d0 740 goto free;
3deff760 741 }
fb9987d0
S		 742
743 return;
744free:
e6c6d33c 745 kfree_skb(skb);
6335ed0f 746 urb->context = NULL;
fb9987d0
S		 747}
748
749static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
750{
fb9987d0 751 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
ff8f59b5 752 unsigned long flags;
fb9987d0 753
c11d8f89
S		 754 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
755 &hif_dev->tx.tx_buf, list) {
756 usb_kill_urb(tx_buf->urb);
fb9987d0
S		 757 list_del(&tx_buf->list);
758 usb_free_urb(tx_buf->urb);
759 kfree(tx_buf->buf);
760 kfree(tx_buf);
761 }
762
ff8f59b5
SM		 763 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
764 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
765 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
766
fb9987d0
S		 767 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
768 &hif_dev->tx.tx_pending, list) {
769 usb_kill_urb(tx_buf->urb);
770 list_del(&tx_buf->list);
771 usb_free_urb(tx_buf->urb);
772 kfree(tx_buf->buf);
773 kfree(tx_buf);
774 }
2f80194c
SM		 775
776 usb_kill_anchored_urbs(&hif_dev->mgmt_submitted);
fb9987d0
S		 777}
778
779static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
780{
781 struct tx_buf *tx_buf;
782 int i;
783
784 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
785 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
786 spin_lock_init(&hif_dev->tx.tx_lock);
787 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
2f80194c 788 init_usb_anchor(&hif_dev->mgmt_submitted);
fb9987d0
S		 789
790 for (i = 0; i < MAX_TX_URB_NUM; i++) {
791 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
792 if (!tx_buf)
793 goto err;
794
795 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
796 if (!tx_buf->buf)
797 goto err;
798
799 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
800 if (!tx_buf->urb)
801 goto err;
802
803 tx_buf->hif_dev = hif_dev;
804 __skb_queue_head_init(&tx_buf->skb_queue);
805
806 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
807 }
808
809 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
810
811 return 0;
812err:
7606688a
DC		 813 if (tx_buf) {
814 kfree(tx_buf->buf);
815 kfree(tx_buf);
816 }
fb9987d0
S		 817 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
818 return -ENOMEM;
819}
820
fb9987d0
S		 821static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
822{
6335ed0f 823 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
fb9987d0
S		 824}
825
826static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
827{
6335ed0f
S		 828 struct urb *urb = NULL;
829 struct sk_buff *skb = NULL;
fb9987d0
S		 830 int i, ret;
831
6335ed0f 832 init_usb_anchor(&hif_dev->rx_submitted);
46baa1a2 833 spin_lock_init(&hif_dev->rx_lock);
6335ed0f 834
fb9987d0
S		 835 for (i = 0; i < MAX_RX_URB_NUM; i++) {
836
837 /* Allocate URB */
6335ed0f
S		 838 urb = usb_alloc_urb(0, GFP_KERNEL);
839 if (urb == NULL) {
fb9987d0 840 ret = -ENOMEM;
6335ed0f 841 goto err_urb;
fb9987d0
S		 842 }
843
844 /* Allocate buffer */
f28a7b30 845 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
6335ed0f
S		 846 if (!skb) {
847 ret = -ENOMEM;
848 goto err_skb;
849 }
fb9987d0 850
6335ed0f
S		 851 usb_fill_bulk_urb(urb, hif_dev->udev,
852 usb_rcvbulkpipe(hif_dev->udev,
853 USB_WLAN_RX_PIPE),
854 skb->data, MAX_RX_BUF_SIZE,
855 ath9k_hif_usb_rx_cb, skb);
856
857 /* Anchor URB */
858 usb_anchor_urb(urb, &hif_dev->rx_submitted);
fb9987d0 859
6335ed0f
S		 860 /* Submit URB */
861 ret = usb_submit_urb(urb, GFP_KERNEL);
862 if (ret) {
863 usb_unanchor_urb(urb);
864 goto err_submit;
865 }
66b10e33
S		 866
867 /*
868 * Drop reference count.
869 * This ensures that the URB is freed when killing them.
870 */
871 usb_free_urb(urb);
fb9987d0
S		 872 }
873
874 return 0;
875
6335ed0f 876err_submit:
f28a7b30 877 kfree_skb(skb);
6335ed0f
S		 878err_skb:
879 usb_free_urb(urb);
880err_urb:
fb9987d0
S		 881 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
882 return ret;
883}
884
3deff760 885static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev)
fb9987d0 886{
3deff760 887 usb_kill_anchored_urbs(&hif_dev->reg_in_submitted);
fb9987d0
S		 888}
889
3deff760 890static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev)
fb9987d0 891{
3deff760
SM		 892 struct urb *urb = NULL;
893 struct sk_buff *skb = NULL;
894 int i, ret;
fb9987d0 895
3deff760 896 init_usb_anchor(&hif_dev->reg_in_submitted);
fb9987d0 897
3deff760 898 for (i = 0; i < MAX_REG_IN_URB_NUM; i++) {
fb9987d0 899
3deff760
SM		 900 /* Allocate URB */
901 urb = usb_alloc_urb(0, GFP_KERNEL);
902 if (urb == NULL) {
903 ret = -ENOMEM;
904 goto err_urb;
905 }
fb9987d0 906
3deff760
SM		 907 /* Allocate buffer */
908 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
909 if (!skb) {
910 ret = -ENOMEM;
911 goto err_skb;
912 }
913
2b721118
OR		 914 usb_fill_int_urb(urb, hif_dev->udev,
915 usb_rcvintpipe(hif_dev->udev,
3deff760
SM		 916 USB_REG_IN_PIPE),
917 skb->data, MAX_REG_IN_BUF_SIZE,
2b721118 918 ath9k_hif_usb_reg_in_cb, skb, 1);
3deff760
SM		 919
920 /* Anchor URB */
921 usb_anchor_urb(urb, &hif_dev->reg_in_submitted);
922
923 /* Submit URB */
924 ret = usb_submit_urb(urb, GFP_KERNEL);
925 if (ret) {
926 usb_unanchor_urb(urb);
927 goto err_submit;
928 }
929
930 /*
931 * Drop reference count.
932 * This ensures that the URB is freed when killing them.
933 */
934 usb_free_urb(urb);
935 }
fb9987d0
S		 936
937 return 0;
938
3deff760
SM		 939err_submit:
940 kfree_skb(skb);
941err_skb:
942 usb_free_urb(urb);
943err_urb:
944 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
945 return ret;
fb9987d0
S		 946}
947
948static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
949{
6f0f2669
S		 950 /* Register Write */
951 init_usb_anchor(&hif_dev->regout_submitted);
952
fb9987d0
S		 953 /* TX */
954 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
955 goto err;
956
957 /* RX */
958 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
f8036965 959 goto err_rx;
fb9987d0 960
6f0f2669 961 /* Register Read */
3deff760 962 if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0)
f8036965 963 goto err_reg;
fb9987d0
S		 964
965 return 0;
f8036965
RM		 966err_reg:
967 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
968err_rx:
969 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
fb9987d0
S		 970err:
971 return -ENOMEM;
972}
973
1d8af8ca
SM		 974static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
975{
976 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
3deff760 977 ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev);
1d8af8ca
SM		 978 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
979 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
980}
981
0ed7b93e 982static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
fb9987d0
S		 983{
984 int transfer, err;
32e31de5
ML		 985 const void *data = hif_dev->fw_data;
986 size_t len = hif_dev->fw_size;
fb9987d0
S		 987 u32 addr = AR9271_FIRMWARE;
988 u8 *buf = kzalloc(4096, GFP_KERNEL);
b1762862 989 u32 firm_offset;
fb9987d0
S		 990
991 if (!buf)
992 return -ENOMEM;
993
994 while (len) {
291689fc 995 transfer = min_t(size_t, len, 4096);
fb9987d0
S		 996 memcpy(buf, data, transfer);
997
998 err = usb_control_msg(hif_dev->udev,
999 usb_sndctrlpipe(hif_dev->udev, 0),
1000 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
1001 addr >> 8, 0, buf, transfer, HZ);
1002 if (err < 0) {
1003 kfree(buf);
1004 return err;
1005 }
1006
1007 len -= transfer;
1008 data += transfer;
1009 addr += transfer;
1010 }
1011 kfree(buf);
1012
0ed7b93e 1013 if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info))
b1762862 1014 firm_offset = AR7010_FIRMWARE_TEXT;
fa6e15e0 1015 else
b1762862
S		 1016 firm_offset = AR9271_FIRMWARE_TEXT;
1017
fb9987d0
S		 1018 /*
1019 * Issue FW download complete command to firmware.
1020 */
1021 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
1022 FIRMWARE_DOWNLOAD_COMP,
1023 0x40 | USB_DIR_OUT,
b1762862 1024 firm_offset >> 8, 0, NULL, 0, HZ);
fb9987d0
S		 1025 if (err)
1026 return -EIO;
1027
1028 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
32e31de5 1029 hif_dev->fw_name, (unsigned long) hif_dev->fw_size);
fb9987d0
S		 1030
1031 return 0;
1032}
1033
0ed7b93e 1034static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
fb9987d0 1035{
2b721118 1036 int ret;
fb9987d0 1037
0ed7b93e 1038 ret = ath9k_hif_usb_download_fw(hif_dev);
1d8af8ca
SM		 1039 if (ret) {
1040 dev_err(&hif_dev->udev->dev,
ce43cee5
S		 1041 "ath9k_htc: Firmware - %s download failed\n",
1042 hif_dev->fw_name);
0ed7b93e 1043 return ret;
1d8af8ca
SM		 1044 }
1045
490b3f4e
RM		 1046 /* Alloc URBs */
1047 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1048 if (ret) {
1049 dev_err(&hif_dev->udev->dev,
1050 "ath9k_htc: Unable to allocate URBs\n");
0ed7b93e 1051 return ret;
490b3f4e
RM		 1052 }
1053
fb9987d0 1054 return 0;
fb9987d0
S		 1055}
1056
fb9987d0
S		 1057static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
1058{
1059 ath9k_hif_usb_dealloc_urbs(hif_dev);
0ed7b93e
SM		 1060}
1061
1062/*
1063 * If initialization fails or the FW cannot be retrieved,
1064 * detach the device.
1065 */
1066static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev)
1067{
e962610f
ML		 1068 struct device *dev = &hif_dev->udev->dev;
1069 struct device *parent = dev->parent;
0ed7b93e 1070
9494849e 1071 complete_all(&hif_dev->fw_done);
0ed7b93e
SM		 1072
1073 if (parent)
1074 device_lock(parent);
1075
e962610f 1076 device_release_driver(dev);
0ed7b93e
SM		 1077
1078 if (parent)
1079 device_unlock(parent);
1080}
1081
1082static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context)
1083{
1084 struct hif_device_usb *hif_dev = context;
1085 int ret;
1086
1087 if (!fw) {
1088 dev_err(&hif_dev->udev->dev,
1089 "ath9k_htc: Failed to get firmware %s\n",
1090 hif_dev->fw_name);
1091 goto err_fw;
1092 }
1093
1094 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1095 &hif_dev->udev->dev);
32e31de5
ML		 1096 if (hif_dev->htc_handle == NULL)
1097 goto err_dev_alloc;
0ed7b93e 1098
32e31de5
ML		 1099 hif_dev->fw_data = fw->data;
1100 hif_dev->fw_size = fw->size;
0ed7b93e
SM		 1101
1102 /* Proceed with initialization */
1103
1104 ret = ath9k_hif_usb_dev_init(hif_dev);
1105 if (ret)
1106 goto err_dev_init;
1107
1108 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1109 &hif_dev->interface->dev,
1110 hif_dev->usb_device_id->idProduct,
1111 hif_dev->udev->product,
1112 hif_dev->usb_device_id->driver_info);
1113 if (ret) {
1114 ret = -EINVAL;
1115 goto err_htc_hw_init;
1116 }
1117
32e31de5
ML		 1118 release_firmware(fw);
1119 hif_dev->flags |= HIF_USB_READY;
9494849e 1120 complete_all(&hif_dev->fw_done);
0ed7b93e
SM		 1121
1122 return;
1123
1124err_htc_hw_init:
1125 ath9k_hif_usb_dev_deinit(hif_dev);
1126err_dev_init:
1127 ath9k_htc_hw_free(hif_dev->htc_handle);
32e31de5 1128err_dev_alloc:
0ed7b93e 1129 release_firmware(fw);
0ed7b93e
SM		 1130err_fw:
1131 ath9k_hif_usb_firmware_fail(hif_dev);
fb9987d0
S		 1132}
1133
36bcce43
SM		 1134/*
1135 * An exact copy of the function from zd1211rw.
1136 */
1137static int send_eject_command(struct usb_interface *interface)
1138{
1139 struct usb_device *udev = interface_to_usbdev(interface);
1140 struct usb_host_interface *iface_desc = &interface->altsetting[0];
1141 struct usb_endpoint_descriptor *endpoint;
1142 unsigned char *cmd;
1143 u8 bulk_out_ep;
1144 int r;
1145
1146 /* Find bulk out endpoint */
1147 for (r = 1; r >= 0; r--) {
1148 endpoint = &iface_desc->endpoint[r].desc;
1149 if (usb_endpoint_dir_out(endpoint) &&
1150 usb_endpoint_xfer_bulk(endpoint)) {
1151 bulk_out_ep = endpoint->bEndpointAddress;
1152 break;
1153 }
1154 }
1155 if (r == -1) {
1156 dev_err(&udev->dev,
1157 "ath9k_htc: Could not find bulk out endpoint\n");
1158 return -ENODEV;
1159 }
1160
1161 cmd = kzalloc(31, GFP_KERNEL);
1162 if (cmd == NULL)
1163 return -ENODEV;
1164
1165 /* USB bulk command block */
1166 cmd[0] = 0x55; /* bulk command signature */
1167 cmd[1] = 0x53; /* bulk command signature */
1168 cmd[2] = 0x42; /* bulk command signature */
1169 cmd[3] = 0x43; /* bulk command signature */
1170 cmd[14] = 6; /* command length */
1171
1172 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
1173 cmd[19] = 0x2; /* eject disc */
1174
1175 dev_info(&udev->dev, "Ejecting storage device...\n");
1176 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
1177 cmd, 31, NULL, 2000);
1178 kfree(cmd);
1179 if (r)
1180 return r;
1181
1182 /* At this point, the device disconnects and reconnects with the real
1183 * ID numbers. */
1184
1185 usb_set_intfdata(interface, NULL);
1186 return 0;
1187}
1188
fb9987d0
S		 1189static int ath9k_hif_usb_probe(struct usb_interface *interface,
1190 const struct usb_device_id *id)
1191{
1192 struct usb_device *udev = interface_to_usbdev(interface);
1193 struct hif_device_usb *hif_dev;
fb9987d0
S		 1194 int ret = 0;
1195
36bcce43
SM		 1196 if (id->driver_info == STORAGE_DEVICE)
1197 return send_eject_command(interface);
1198
fb9987d0
S		 1199 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1200 if (!hif_dev) {
1201 ret = -ENOMEM;
1202 goto err_alloc;
1203 }
1204
1205 usb_get_dev(udev);
0ed7b93e 1206
fb9987d0
S		 1207 hif_dev->udev = udev;
1208 hif_dev->interface = interface;
0ed7b93e 1209 hif_dev->usb_device_id = id;
fb9987d0
S		 1210#ifdef CONFIG_PM
1211 udev->reset_resume = 1;
1212#endif
1213 usb_set_intfdata(interface, hif_dev);
1214
0ed7b93e 1215 init_completion(&hif_dev->fw_done);
47fce026 1216
ce43cee5
S		 1217 /* Find out which firmware to load */
1218
0b5ead91 1219 if (IS_AR7010_DEVICE(id->driver_info))
9efabad2 1220 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
fa6e15e0 1221 else
d0ee0ebe 1222 hif_dev->fw_name = FIRMWARE_AR9271;
ce43cee5 1223
0ed7b93e
SM		 1224 ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
1225 &hif_dev->udev->dev, GFP_KERNEL,
1226 hif_dev, ath9k_hif_usb_firmware_cb);
fb9987d0 1227 if (ret) {
0ed7b93e
SM		 1228 dev_err(&hif_dev->udev->dev,
1229 "ath9k_htc: Async request for firmware %s failed\n",
1230 hif_dev->fw_name);
1231 goto err_fw_req;
fb9987d0
S		 1232 }
1233
0ed7b93e
SM		 1234 dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
1235 hif_dev->fw_name);
fb9987d0
S		 1236
1237 return 0;
1238
0ed7b93e 1239err_fw_req:
fb9987d0
S		 1240 usb_set_intfdata(interface, NULL);
1241 kfree(hif_dev);
1242 usb_put_dev(udev);
1243err_alloc:
1244 return ret;
1245}
1246
62e4716a
S		 1247static void ath9k_hif_usb_reboot(struct usb_device *udev)
1248{
1249 u32 reboot_cmd = 0xffffffff;
1250 void *buf;
1251 int ret;
1252
a465a2cc 1253 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
62e4716a
S		 1254 if (!buf)
1255 return;
1256
2b721118 1257 ret = usb_interrupt_msg(udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE),
62e4716a
S		 1258 buf, 4, NULL, HZ);
1259 if (ret)
1260 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1261
1262 kfree(buf);
1263}
1264
fb9987d0
S		 1265static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1266{
1267 struct usb_device *udev = interface_to_usbdev(interface);
b2767363 1268 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
97dcec57 1269 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
fb9987d0 1270
36bcce43
SM		 1271 if (!hif_dev)
1272 return;
1273
0ed7b93e
SM		 1274 wait_for_completion(&hif_dev->fw_done);
1275
32e31de5 1276 if (hif_dev->flags & HIF_USB_READY) {
0ed7b93e
SM		 1277 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1278 ath9k_htc_hw_free(hif_dev->htc_handle);
1279 ath9k_hif_usb_dev_deinit(hif_dev);
0ed7b93e
SM		 1280 }
1281
36bcce43 1282 usb_set_intfdata(interface, NULL);
fb9987d0 1283
4928bd2e
OR		 1284 /* If firmware was loaded we should drop it
1285 * go back to first stage bootloader. */
1286 if (!unplugged && (hif_dev->flags & HIF_USB_READY))
62e4716a 1287 ath9k_hif_usb_reboot(udev);
fb9987d0
S		 1288
1289 kfree(hif_dev);
1290 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1291 usb_put_dev(udev);
1292}
1293
1294#ifdef CONFIG_PM
1295static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1296 pm_message_t message)
1297{
b2767363 1298 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
fb9987d0 1299
f933ebed
SM		 1300 /*
1301 * The device has to be set to FULLSLEEP mode in case no
1302 * interface is up.
1303 */
1304 if (!(hif_dev->flags & HIF_USB_START))
1305 ath9k_htc_suspend(hif_dev->htc_handle);
1306
9494849e
AK		 1307 wait_for_completion(&hif_dev->fw_done);
1308
1309 if (hif_dev->flags & HIF_USB_READY)
1310 ath9k_hif_usb_dealloc_urbs(hif_dev);
fb9987d0
S		 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 1319 int ret;
32e31de5 1320 const struct firmware *fw;
fb9987d0
S		 1321
1322 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1323 if (ret)
1324 return ret;
1325
32e31de5
ML		 1326 if (hif_dev->flags & HIF_USB_READY) {
1327 /* request cached firmware during suspend/resume cycle */
1328 ret = request_firmware(&fw, hif_dev->fw_name,
1329 &hif_dev->udev->dev);
1330 if (ret)
1331 goto fail_resume;
1332
1333 hif_dev->fw_data = fw->data;
1334 hif_dev->fw_size = fw->size;
0ed7b93e 1335 ret = ath9k_hif_usb_download_fw(hif_dev);
32e31de5 1336 release_firmware(fw);
fb9987d0
S		 1337 if (ret)
1338 goto fail_resume;
1339 } else {
1340 ath9k_hif_usb_dealloc_urbs(hif_dev);
1341 return -EIO;
1342 }
1343
1344 mdelay(100);
1345
fa6e15e0 1346 ret = ath9k_htc_resume(htc_handle);
fb9987d0
S		 1347
1348 if (ret)
1349 goto fail_resume;
1350
1351 return 0;
1352
1353fail_resume:
1354 ath9k_hif_usb_dealloc_urbs(hif_dev);
1355
1356 return ret;
1357}
1358#endif
1359
1360static struct usb_driver ath9k_hif_usb_driver = {
50f68712 1361 .name = KBUILD_MODNAME,
fb9987d0
S		 1362 .probe = ath9k_hif_usb_probe,
1363 .disconnect = ath9k_hif_usb_disconnect,
1364#ifdef CONFIG_PM
1365 .suspend = ath9k_hif_usb_suspend,
1366 .resume = ath9k_hif_usb_resume,
1367 .reset_resume = ath9k_hif_usb_resume,
1368#endif
1369 .id_table = ath9k_hif_usb_ids,
1370 .soft_unbind = 1,
e1f12eb6 1371 .disable_hub_initiated_lpm = 1,
fb9987d0
S		 1372};
1373
1374int ath9k_hif_usb_init(void)
1375{
1376 return usb_register(&ath9k_hif_usb_driver);
1377}
1378
1379void ath9k_hif_usb_exit(void)
1380{
1381 usb_deregister(&ath9k_hif_usb_driver);
1382}
Linux 6.x block layer and io_uring tree(s)