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Commit | Line | Data |
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fb9987d0 S |
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 | ||
d0ee0ebe JL |
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 | ||
fb9987d0 | 28 | static struct usb_device_id ath9k_hif_usb_ids[] = { |
4e63f768 S |
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(0x04CA, 0x4605) }, /* Liteon */ | |
39 | { USB_DEVICE(0x083A, 0xA704) }, /* SMC Networks */ | |
fb9987d0 S |
40 | { }, |
41 | }; | |
42 | ||
43 | MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids); | |
44 | ||
45 | static int __hif_usb_tx(struct hif_device_usb *hif_dev); | |
46 | ||
47 | static void hif_usb_regout_cb(struct urb *urb) | |
48 | { | |
49 | struct cmd_buf *cmd = (struct cmd_buf *)urb->context; | |
fb9987d0 S |
50 | |
51 | switch (urb->status) { | |
52 | case 0: | |
53 | break; | |
54 | case -ENOENT: | |
55 | case -ECONNRESET: | |
fb9987d0 S |
56 | case -ENODEV: |
57 | case -ESHUTDOWN: | |
6f0f2669 | 58 | goto free; |
fb9987d0 S |
59 | default: |
60 | break; | |
61 | } | |
62 | ||
63 | if (cmd) { | |
64 | ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle, | |
65 | cmd->skb, 1); | |
66 | kfree(cmd); | |
fb9987d0 | 67 | } |
6f0f2669 S |
68 | |
69 | return; | |
70 | free: | |
0fa35a58 | 71 | kfree_skb(cmd->skb); |
6f0f2669 | 72 | kfree(cmd); |
fb9987d0 S |
73 | } |
74 | ||
75 | static int hif_usb_send_regout(struct hif_device_usb *hif_dev, | |
76 | struct sk_buff *skb) | |
77 | { | |
78 | struct urb *urb; | |
79 | struct cmd_buf *cmd; | |
80 | int ret = 0; | |
81 | ||
82 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
83 | if (urb == NULL) | |
84 | return -ENOMEM; | |
85 | ||
86 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
87 | if (cmd == NULL) { | |
88 | usb_free_urb(urb); | |
89 | return -ENOMEM; | |
90 | } | |
91 | ||
92 | cmd->skb = skb; | |
93 | cmd->hif_dev = hif_dev; | |
94 | ||
4a0e8ecc RM |
95 | usb_fill_bulk_urb(urb, hif_dev->udev, |
96 | usb_sndbulkpipe(hif_dev->udev, USB_REG_OUT_PIPE), | |
fb9987d0 | 97 | skb->data, skb->len, |
4a0e8ecc | 98 | hif_usb_regout_cb, cmd); |
fb9987d0 | 99 | |
6f0f2669 | 100 | usb_anchor_urb(urb, &hif_dev->regout_submitted); |
fb9987d0 S |
101 | ret = usb_submit_urb(urb, GFP_KERNEL); |
102 | if (ret) { | |
6f0f2669 | 103 | usb_unanchor_urb(urb); |
fb9987d0 S |
104 | kfree(cmd); |
105 | } | |
6f0f2669 | 106 | usb_free_urb(urb); |
fb9987d0 S |
107 | |
108 | return ret; | |
109 | } | |
110 | ||
c11d8f89 S |
111 | static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev, |
112 | struct sk_buff_head *list) | |
113 | { | |
114 | struct sk_buff *skb; | |
115 | ||
116 | while ((skb = __skb_dequeue(list)) != NULL) { | |
117 | dev_kfree_skb_any(skb); | |
118 | TX_STAT_INC(skb_dropped); | |
119 | } | |
120 | } | |
121 | ||
fb9987d0 S |
122 | static void hif_usb_tx_cb(struct urb *urb) |
123 | { | |
124 | struct tx_buf *tx_buf = (struct tx_buf *) urb->context; | |
690e781c | 125 | struct hif_device_usb *hif_dev; |
fb9987d0 | 126 | struct sk_buff *skb; |
fb9987d0 | 127 | |
690e781c | 128 | if (!tx_buf || !tx_buf->hif_dev) |
fb9987d0 S |
129 | return; |
130 | ||
690e781c DC |
131 | hif_dev = tx_buf->hif_dev; |
132 | ||
fb9987d0 S |
133 | switch (urb->status) { |
134 | case 0: | |
135 | break; | |
136 | case -ENOENT: | |
137 | case -ECONNRESET: | |
fb9987d0 S |
138 | case -ENODEV: |
139 | case -ESHUTDOWN: | |
c11d8f89 S |
140 | /* |
141 | * The URB has been killed, free the SKBs | |
142 | * and return. | |
143 | */ | |
144 | ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue); | |
fb9987d0 S |
145 | return; |
146 | default: | |
147 | break; | |
148 | } | |
149 | ||
c11d8f89 S |
150 | /* Check if TX has been stopped */ |
151 | spin_lock(&hif_dev->tx.tx_lock); | |
152 | if (hif_dev->tx.flags & HIF_USB_TX_STOP) { | |
fb9987d0 | 153 | spin_unlock(&hif_dev->tx.tx_lock); |
c11d8f89 S |
154 | ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue); |
155 | goto add_free; | |
fb9987d0 | 156 | } |
c11d8f89 | 157 | spin_unlock(&hif_dev->tx.tx_lock); |
fb9987d0 | 158 | |
c11d8f89 S |
159 | /* Complete the queued SKBs. */ |
160 | while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) { | |
161 | ath9k_htc_txcompletion_cb(hif_dev->htc_handle, | |
162 | skb, 1); | |
163 | TX_STAT_INC(skb_completed); | |
eac8e385 | 164 | } |
c11d8f89 S |
165 | |
166 | add_free: | |
167 | /* Re-initialize the SKB queue */ | |
168 | tx_buf->len = tx_buf->offset = 0; | |
169 | __skb_queue_head_init(&tx_buf->skb_queue); | |
170 | ||
171 | /* Add this TX buffer to the free list */ | |
172 | spin_lock(&hif_dev->tx.tx_lock); | |
173 | list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf); | |
174 | hif_dev->tx.tx_buf_cnt++; | |
175 | if (!(hif_dev->tx.flags & HIF_USB_TX_STOP)) | |
176 | __hif_usb_tx(hif_dev); /* Check for pending SKBs */ | |
177 | TX_STAT_INC(buf_completed); | |
178 | spin_unlock(&hif_dev->tx.tx_lock); | |
f8e1d080 ML |
179 | } |
180 | ||
fb9987d0 S |
181 | /* TX lock has to be taken */ |
182 | static int __hif_usb_tx(struct hif_device_usb *hif_dev) | |
183 | { | |
184 | struct tx_buf *tx_buf = NULL; | |
185 | struct sk_buff *nskb = NULL; | |
186 | int ret = 0, i; | |
187 | u16 *hdr, tx_skb_cnt = 0; | |
188 | u8 *buf; | |
189 | ||
190 | if (hif_dev->tx.tx_skb_cnt == 0) | |
191 | return 0; | |
192 | ||
193 | /* Check if a free TX buffer is available */ | |
194 | if (list_empty(&hif_dev->tx.tx_buf)) | |
195 | return 0; | |
196 | ||
197 | tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list); | |
c11d8f89 | 198 | list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending); |
fb9987d0 S |
199 | hif_dev->tx.tx_buf_cnt--; |
200 | ||
201 | tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM); | |
202 | ||
203 | for (i = 0; i < tx_skb_cnt; i++) { | |
204 | nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue); | |
205 | ||
206 | /* Should never be NULL */ | |
207 | BUG_ON(!nskb); | |
208 | ||
209 | hif_dev->tx.tx_skb_cnt--; | |
210 | ||
211 | buf = tx_buf->buf; | |
212 | buf += tx_buf->offset; | |
213 | hdr = (u16 *)buf; | |
214 | *hdr++ = nskb->len; | |
215 | *hdr++ = ATH_USB_TX_STREAM_MODE_TAG; | |
216 | buf += 4; | |
217 | memcpy(buf, nskb->data, nskb->len); | |
218 | tx_buf->len = nskb->len + 4; | |
219 | ||
220 | if (i < (tx_skb_cnt - 1)) | |
221 | tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4; | |
222 | ||
223 | if (i == (tx_skb_cnt - 1)) | |
224 | tx_buf->len += tx_buf->offset; | |
225 | ||
226 | __skb_queue_tail(&tx_buf->skb_queue, nskb); | |
227 | TX_STAT_INC(skb_queued); | |
228 | } | |
229 | ||
230 | usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev, | |
231 | usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE), | |
232 | tx_buf->buf, tx_buf->len, | |
233 | hif_usb_tx_cb, tx_buf); | |
234 | ||
235 | ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC); | |
236 | if (ret) { | |
237 | tx_buf->len = tx_buf->offset = 0; | |
eac8e385 | 238 | ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue); |
fb9987d0 S |
239 | __skb_queue_head_init(&tx_buf->skb_queue); |
240 | list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf); | |
241 | hif_dev->tx.tx_buf_cnt++; | |
242 | } | |
243 | ||
244 | if (!ret) | |
245 | TX_STAT_INC(buf_queued); | |
246 | ||
247 | return ret; | |
248 | } | |
249 | ||
250 | static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb, | |
251 | struct ath9k_htc_tx_ctl *tx_ctl) | |
252 | { | |
253 | unsigned long flags; | |
254 | ||
255 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); | |
256 | ||
257 | if (hif_dev->tx.flags & HIF_USB_TX_STOP) { | |
258 | spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); | |
259 | return -ENODEV; | |
260 | } | |
261 | ||
262 | /* Check if the max queue count has been reached */ | |
263 | if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) { | |
264 | spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); | |
265 | return -ENOMEM; | |
266 | } | |
267 | ||
268 | __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb); | |
269 | hif_dev->tx.tx_skb_cnt++; | |
270 | ||
271 | /* Send normal frames immediately */ | |
272 | if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL))) | |
273 | __hif_usb_tx(hif_dev); | |
274 | ||
275 | /* Check if AMPDUs have to be sent immediately */ | |
276 | if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) && | |
277 | (hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) && | |
278 | (hif_dev->tx.tx_skb_cnt < 2)) { | |
279 | __hif_usb_tx(hif_dev); | |
280 | } | |
281 | ||
282 | spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | static void hif_usb_start(void *hif_handle, u8 pipe_id) | |
288 | { | |
289 | struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle; | |
290 | unsigned long flags; | |
291 | ||
292 | hif_dev->flags |= HIF_USB_START; | |
293 | ||
294 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); | |
295 | hif_dev->tx.flags &= ~HIF_USB_TX_STOP; | |
296 | spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); | |
297 | } | |
298 | ||
299 | static void hif_usb_stop(void *hif_handle, u8 pipe_id) | |
300 | { | |
301 | struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle; | |
302 | unsigned long flags; | |
303 | ||
304 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); | |
eac8e385 | 305 | ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue); |
fb9987d0 S |
306 | hif_dev->tx.tx_skb_cnt = 0; |
307 | hif_dev->tx.flags |= HIF_USB_TX_STOP; | |
308 | spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags); | |
309 | } | |
310 | ||
311 | static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb, | |
312 | struct ath9k_htc_tx_ctl *tx_ctl) | |
313 | { | |
314 | struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle; | |
315 | int ret = 0; | |
316 | ||
317 | switch (pipe_id) { | |
318 | case USB_WLAN_TX_PIPE: | |
319 | ret = hif_usb_send_tx(hif_dev, skb, tx_ctl); | |
320 | break; | |
321 | case USB_REG_OUT_PIPE: | |
322 | ret = hif_usb_send_regout(hif_dev, skb); | |
323 | break; | |
324 | default: | |
6335ed0f S |
325 | dev_err(&hif_dev->udev->dev, |
326 | "ath9k_htc: Invalid TX pipe: %d\n", pipe_id); | |
fb9987d0 S |
327 | ret = -EINVAL; |
328 | break; | |
329 | } | |
330 | ||
331 | return ret; | |
332 | } | |
333 | ||
334 | static struct ath9k_htc_hif hif_usb = { | |
335 | .transport = ATH9K_HIF_USB, | |
336 | .name = "ath9k_hif_usb", | |
337 | ||
338 | .control_ul_pipe = USB_REG_OUT_PIPE, | |
339 | .control_dl_pipe = USB_REG_IN_PIPE, | |
340 | ||
341 | .start = hif_usb_start, | |
342 | .stop = hif_usb_stop, | |
343 | .send = hif_usb_send, | |
344 | }; | |
345 | ||
346 | static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev, | |
347 | struct sk_buff *skb) | |
348 | { | |
c503269a | 349 | struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER]; |
fb9987d0 S |
350 | int index = 0, i = 0, chk_idx, len = skb->len; |
351 | int rx_remain_len = 0, rx_pkt_len = 0; | |
352 | u16 pkt_len, pkt_tag, pool_index = 0; | |
353 | u8 *ptr; | |
354 | ||
46baa1a2 S |
355 | spin_lock(&hif_dev->rx_lock); |
356 | ||
fb9987d0 S |
357 | rx_remain_len = hif_dev->rx_remain_len; |
358 | rx_pkt_len = hif_dev->rx_transfer_len; | |
359 | ||
360 | if (rx_remain_len != 0) { | |
361 | struct sk_buff *remain_skb = hif_dev->remain_skb; | |
362 | ||
363 | if (remain_skb) { | |
364 | ptr = (u8 *) remain_skb->data; | |
365 | ||
366 | index = rx_remain_len; | |
367 | rx_remain_len -= hif_dev->rx_pad_len; | |
368 | ptr += rx_pkt_len; | |
369 | ||
370 | memcpy(ptr, skb->data, rx_remain_len); | |
371 | ||
372 | rx_pkt_len += rx_remain_len; | |
373 | hif_dev->rx_remain_len = 0; | |
374 | skb_put(remain_skb, rx_pkt_len); | |
375 | ||
376 | skb_pool[pool_index++] = remain_skb; | |
377 | ||
378 | } else { | |
379 | index = rx_remain_len; | |
380 | } | |
381 | } | |
382 | ||
46baa1a2 S |
383 | spin_unlock(&hif_dev->rx_lock); |
384 | ||
fb9987d0 S |
385 | while (index < len) { |
386 | ptr = (u8 *) skb->data; | |
387 | ||
388 | pkt_len = ptr[index] + (ptr[index+1] << 8); | |
389 | pkt_tag = ptr[index+2] + (ptr[index+3] << 8); | |
390 | ||
391 | if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) { | |
392 | u16 pad_len; | |
393 | ||
394 | pad_len = 4 - (pkt_len & 0x3); | |
395 | if (pad_len == 4) | |
396 | pad_len = 0; | |
397 | ||
398 | chk_idx = index; | |
399 | index = index + 4 + pkt_len + pad_len; | |
400 | ||
401 | if (index > MAX_RX_BUF_SIZE) { | |
46baa1a2 | 402 | spin_lock(&hif_dev->rx_lock); |
fb9987d0 S |
403 | hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE; |
404 | hif_dev->rx_transfer_len = | |
405 | MAX_RX_BUF_SIZE - chk_idx - 4; | |
406 | hif_dev->rx_pad_len = pad_len; | |
407 | ||
408 | nskb = __dev_alloc_skb(pkt_len + 32, | |
409 | GFP_ATOMIC); | |
410 | if (!nskb) { | |
411 | dev_err(&hif_dev->udev->dev, | |
412 | "ath9k_htc: RX memory allocation" | |
413 | " error\n"); | |
46baa1a2 | 414 | spin_unlock(&hif_dev->rx_lock); |
fb9987d0 S |
415 | goto err; |
416 | } | |
417 | skb_reserve(nskb, 32); | |
418 | RX_STAT_INC(skb_allocated); | |
419 | ||
420 | memcpy(nskb->data, &(skb->data[chk_idx+4]), | |
421 | hif_dev->rx_transfer_len); | |
422 | ||
423 | /* Record the buffer pointer */ | |
424 | hif_dev->remain_skb = nskb; | |
46baa1a2 | 425 | spin_unlock(&hif_dev->rx_lock); |
fb9987d0 S |
426 | } else { |
427 | nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC); | |
428 | if (!nskb) { | |
429 | dev_err(&hif_dev->udev->dev, | |
430 | "ath9k_htc: RX memory allocation" | |
431 | " error\n"); | |
432 | goto err; | |
433 | } | |
434 | skb_reserve(nskb, 32); | |
435 | RX_STAT_INC(skb_allocated); | |
436 | ||
437 | memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len); | |
438 | skb_put(nskb, pkt_len); | |
439 | skb_pool[pool_index++] = nskb; | |
440 | } | |
441 | } else { | |
442 | RX_STAT_INC(skb_dropped); | |
fb9987d0 S |
443 | return; |
444 | } | |
445 | } | |
446 | ||
447 | err: | |
fb9987d0 S |
448 | for (i = 0; i < pool_index; i++) { |
449 | ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i], | |
450 | skb_pool[i]->len, USB_WLAN_RX_PIPE); | |
451 | RX_STAT_INC(skb_completed); | |
452 | } | |
453 | } | |
454 | ||
455 | static void ath9k_hif_usb_rx_cb(struct urb *urb) | |
456 | { | |
457 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
fb9987d0 S |
458 | struct hif_device_usb *hif_dev = (struct hif_device_usb *) |
459 | usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); | |
460 | int ret; | |
461 | ||
6335ed0f S |
462 | if (!skb) |
463 | return; | |
464 | ||
fb9987d0 S |
465 | if (!hif_dev) |
466 | goto free; | |
467 | ||
468 | switch (urb->status) { | |
469 | case 0: | |
470 | break; | |
471 | case -ENOENT: | |
472 | case -ECONNRESET: | |
473 | case -ENODEV: | |
474 | case -ESHUTDOWN: | |
475 | goto free; | |
476 | default: | |
477 | goto resubmit; | |
478 | } | |
479 | ||
480 | if (likely(urb->actual_length != 0)) { | |
481 | skb_put(skb, urb->actual_length); | |
fb9987d0 | 482 | ath9k_hif_usb_rx_stream(hif_dev, skb); |
fb9987d0 S |
483 | } |
484 | ||
485 | resubmit: | |
486 | skb_reset_tail_pointer(skb); | |
487 | skb_trim(skb, 0); | |
488 | ||
6335ed0f | 489 | usb_anchor_urb(urb, &hif_dev->rx_submitted); |
fb9987d0 | 490 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
6335ed0f S |
491 | if (ret) { |
492 | usb_unanchor_urb(urb); | |
fb9987d0 | 493 | goto free; |
6335ed0f | 494 | } |
fb9987d0 S |
495 | |
496 | return; | |
497 | free: | |
f28a7b30 | 498 | kfree_skb(skb); |
fb9987d0 S |
499 | } |
500 | ||
501 | static void ath9k_hif_usb_reg_in_cb(struct urb *urb) | |
502 | { | |
503 | struct sk_buff *skb = (struct sk_buff *) urb->context; | |
504 | struct sk_buff *nskb; | |
505 | struct hif_device_usb *hif_dev = (struct hif_device_usb *) | |
506 | usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); | |
507 | int ret; | |
508 | ||
6335ed0f S |
509 | if (!skb) |
510 | return; | |
511 | ||
fb9987d0 S |
512 | if (!hif_dev) |
513 | goto free; | |
514 | ||
515 | switch (urb->status) { | |
516 | case 0: | |
517 | break; | |
518 | case -ENOENT: | |
519 | case -ECONNRESET: | |
520 | case -ENODEV: | |
521 | case -ESHUTDOWN: | |
522 | goto free; | |
523 | default: | |
524 | goto resubmit; | |
525 | } | |
526 | ||
527 | if (likely(urb->actual_length != 0)) { | |
528 | skb_put(skb, urb->actual_length); | |
529 | ||
5ab0af32 S |
530 | /* Process the command first */ |
531 | ath9k_htc_rx_msg(hif_dev->htc_handle, skb, | |
532 | skb->len, USB_REG_IN_PIPE); | |
533 | ||
534 | ||
e6c6d33c | 535 | nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC); |
5ab0af32 S |
536 | if (!nskb) { |
537 | dev_err(&hif_dev->udev->dev, | |
538 | "ath9k_htc: REG_IN memory allocation failure\n"); | |
539 | urb->context = NULL; | |
540 | return; | |
541 | } | |
fb9987d0 S |
542 | |
543 | usb_fill_int_urb(urb, hif_dev->udev, | |
0f529e98 RM |
544 | usb_rcvbulkpipe(hif_dev->udev, |
545 | USB_REG_IN_PIPE), | |
fb9987d0 S |
546 | nskb->data, MAX_REG_IN_BUF_SIZE, |
547 | ath9k_hif_usb_reg_in_cb, nskb, 1); | |
548 | ||
549 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
550 | if (ret) { | |
e6c6d33c | 551 | kfree_skb(nskb); |
5ab0af32 | 552 | urb->context = NULL; |
fb9987d0 S |
553 | } |
554 | ||
fb9987d0 S |
555 | return; |
556 | } | |
557 | ||
558 | resubmit: | |
559 | skb_reset_tail_pointer(skb); | |
560 | skb_trim(skb, 0); | |
561 | ||
562 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
563 | if (ret) | |
564 | goto free; | |
565 | ||
566 | return; | |
567 | free: | |
e6c6d33c | 568 | kfree_skb(skb); |
6335ed0f | 569 | urb->context = NULL; |
fb9987d0 S |
570 | } |
571 | ||
572 | static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev) | |
573 | { | |
fb9987d0 S |
574 | struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL; |
575 | ||
c11d8f89 S |
576 | list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
577 | &hif_dev->tx.tx_buf, list) { | |
578 | usb_kill_urb(tx_buf->urb); | |
fb9987d0 S |
579 | list_del(&tx_buf->list); |
580 | usb_free_urb(tx_buf->urb); | |
581 | kfree(tx_buf->buf); | |
582 | kfree(tx_buf); | |
583 | } | |
584 | ||
fb9987d0 S |
585 | list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
586 | &hif_dev->tx.tx_pending, list) { | |
587 | usb_kill_urb(tx_buf->urb); | |
588 | list_del(&tx_buf->list); | |
589 | usb_free_urb(tx_buf->urb); | |
590 | kfree(tx_buf->buf); | |
591 | kfree(tx_buf); | |
592 | } | |
fb9987d0 S |
593 | } |
594 | ||
595 | static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev) | |
596 | { | |
597 | struct tx_buf *tx_buf; | |
598 | int i; | |
599 | ||
600 | INIT_LIST_HEAD(&hif_dev->tx.tx_buf); | |
601 | INIT_LIST_HEAD(&hif_dev->tx.tx_pending); | |
602 | spin_lock_init(&hif_dev->tx.tx_lock); | |
603 | __skb_queue_head_init(&hif_dev->tx.tx_skb_queue); | |
604 | ||
605 | for (i = 0; i < MAX_TX_URB_NUM; i++) { | |
606 | tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL); | |
607 | if (!tx_buf) | |
608 | goto err; | |
609 | ||
610 | tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL); | |
611 | if (!tx_buf->buf) | |
612 | goto err; | |
613 | ||
614 | tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL); | |
615 | if (!tx_buf->urb) | |
616 | goto err; | |
617 | ||
618 | tx_buf->hif_dev = hif_dev; | |
619 | __skb_queue_head_init(&tx_buf->skb_queue); | |
620 | ||
621 | list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf); | |
622 | } | |
623 | ||
624 | hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM; | |
625 | ||
626 | return 0; | |
627 | err: | |
7606688a DC |
628 | if (tx_buf) { |
629 | kfree(tx_buf->buf); | |
630 | kfree(tx_buf); | |
631 | } | |
fb9987d0 S |
632 | ath9k_hif_usb_dealloc_tx_urbs(hif_dev); |
633 | return -ENOMEM; | |
634 | } | |
635 | ||
fb9987d0 S |
636 | static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev) |
637 | { | |
6335ed0f | 638 | usb_kill_anchored_urbs(&hif_dev->rx_submitted); |
fb9987d0 S |
639 | } |
640 | ||
641 | static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev) | |
642 | { | |
6335ed0f S |
643 | struct urb *urb = NULL; |
644 | struct sk_buff *skb = NULL; | |
fb9987d0 S |
645 | int i, ret; |
646 | ||
6335ed0f | 647 | init_usb_anchor(&hif_dev->rx_submitted); |
46baa1a2 | 648 | spin_lock_init(&hif_dev->rx_lock); |
6335ed0f | 649 | |
fb9987d0 S |
650 | for (i = 0; i < MAX_RX_URB_NUM; i++) { |
651 | ||
652 | /* Allocate URB */ | |
6335ed0f S |
653 | urb = usb_alloc_urb(0, GFP_KERNEL); |
654 | if (urb == NULL) { | |
fb9987d0 | 655 | ret = -ENOMEM; |
6335ed0f | 656 | goto err_urb; |
fb9987d0 S |
657 | } |
658 | ||
659 | /* Allocate buffer */ | |
f28a7b30 | 660 | skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL); |
6335ed0f S |
661 | if (!skb) { |
662 | ret = -ENOMEM; | |
663 | goto err_skb; | |
664 | } | |
fb9987d0 | 665 | |
6335ed0f S |
666 | usb_fill_bulk_urb(urb, hif_dev->udev, |
667 | usb_rcvbulkpipe(hif_dev->udev, | |
668 | USB_WLAN_RX_PIPE), | |
669 | skb->data, MAX_RX_BUF_SIZE, | |
670 | ath9k_hif_usb_rx_cb, skb); | |
671 | ||
672 | /* Anchor URB */ | |
673 | usb_anchor_urb(urb, &hif_dev->rx_submitted); | |
fb9987d0 | 674 | |
6335ed0f S |
675 | /* Submit URB */ |
676 | ret = usb_submit_urb(urb, GFP_KERNEL); | |
677 | if (ret) { | |
678 | usb_unanchor_urb(urb); | |
679 | goto err_submit; | |
680 | } | |
66b10e33 S |
681 | |
682 | /* | |
683 | * Drop reference count. | |
684 | * This ensures that the URB is freed when killing them. | |
685 | */ | |
686 | usb_free_urb(urb); | |
fb9987d0 S |
687 | } |
688 | ||
689 | return 0; | |
690 | ||
6335ed0f | 691 | err_submit: |
f28a7b30 | 692 | kfree_skb(skb); |
6335ed0f S |
693 | err_skb: |
694 | usb_free_urb(urb); | |
695 | err_urb: | |
fb9987d0 S |
696 | ath9k_hif_usb_dealloc_rx_urbs(hif_dev); |
697 | return ret; | |
698 | } | |
699 | ||
700 | static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev) | |
701 | { | |
702 | if (hif_dev->reg_in_urb) { | |
703 | usb_kill_urb(hif_dev->reg_in_urb); | |
6335ed0f | 704 | if (hif_dev->reg_in_urb->context) |
e6c6d33c | 705 | kfree_skb((void *)hif_dev->reg_in_urb->context); |
fb9987d0 S |
706 | usb_free_urb(hif_dev->reg_in_urb); |
707 | hif_dev->reg_in_urb = NULL; | |
708 | } | |
709 | } | |
710 | ||
711 | static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev) | |
712 | { | |
713 | struct sk_buff *skb; | |
714 | ||
715 | hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL); | |
716 | if (hif_dev->reg_in_urb == NULL) | |
717 | return -ENOMEM; | |
718 | ||
e6c6d33c | 719 | skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL); |
fb9987d0 S |
720 | if (!skb) |
721 | goto err; | |
722 | ||
723 | usb_fill_int_urb(hif_dev->reg_in_urb, hif_dev->udev, | |
0f529e98 RM |
724 | usb_rcvbulkpipe(hif_dev->udev, |
725 | USB_REG_IN_PIPE), | |
fb9987d0 S |
726 | skb->data, MAX_REG_IN_BUF_SIZE, |
727 | ath9k_hif_usb_reg_in_cb, skb, 1); | |
728 | ||
729 | if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0) | |
6335ed0f | 730 | goto err; |
fb9987d0 S |
731 | |
732 | return 0; | |
733 | ||
fb9987d0 S |
734 | err: |
735 | ath9k_hif_usb_dealloc_reg_in_urb(hif_dev); | |
736 | return -ENOMEM; | |
737 | } | |
738 | ||
739 | static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev) | |
740 | { | |
6f0f2669 S |
741 | /* Register Write */ |
742 | init_usb_anchor(&hif_dev->regout_submitted); | |
743 | ||
fb9987d0 S |
744 | /* TX */ |
745 | if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0) | |
746 | goto err; | |
747 | ||
748 | /* RX */ | |
749 | if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0) | |
f8036965 | 750 | goto err_rx; |
fb9987d0 | 751 | |
6f0f2669 | 752 | /* Register Read */ |
fb9987d0 | 753 | if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0) |
f8036965 | 754 | goto err_reg; |
fb9987d0 S |
755 | |
756 | return 0; | |
f8036965 RM |
757 | err_reg: |
758 | ath9k_hif_usb_dealloc_rx_urbs(hif_dev); | |
759 | err_rx: | |
760 | ath9k_hif_usb_dealloc_tx_urbs(hif_dev); | |
fb9987d0 S |
761 | err: |
762 | return -ENOMEM; | |
763 | } | |
764 | ||
1d8af8ca SM |
765 | static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev) |
766 | { | |
767 | usb_kill_anchored_urbs(&hif_dev->regout_submitted); | |
768 | ath9k_hif_usb_dealloc_reg_in_urb(hif_dev); | |
769 | ath9k_hif_usb_dealloc_tx_urbs(hif_dev); | |
770 | ath9k_hif_usb_dealloc_rx_urbs(hif_dev); | |
771 | } | |
772 | ||
fb9987d0 S |
773 | static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev) |
774 | { | |
775 | int transfer, err; | |
776 | const void *data = hif_dev->firmware->data; | |
777 | size_t len = hif_dev->firmware->size; | |
778 | u32 addr = AR9271_FIRMWARE; | |
779 | u8 *buf = kzalloc(4096, GFP_KERNEL); | |
b1762862 | 780 | u32 firm_offset; |
fb9987d0 S |
781 | |
782 | if (!buf) | |
783 | return -ENOMEM; | |
784 | ||
785 | while (len) { | |
786 | transfer = min_t(int, len, 4096); | |
787 | memcpy(buf, data, transfer); | |
788 | ||
789 | err = usb_control_msg(hif_dev->udev, | |
790 | usb_sndctrlpipe(hif_dev->udev, 0), | |
791 | FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT, | |
792 | addr >> 8, 0, buf, transfer, HZ); | |
793 | if (err < 0) { | |
794 | kfree(buf); | |
795 | return err; | |
796 | } | |
797 | ||
798 | len -= transfer; | |
799 | data += transfer; | |
800 | addr += transfer; | |
801 | } | |
802 | kfree(buf); | |
803 | ||
d654567d RM |
804 | switch (hif_dev->device_id) { |
805 | case 0x7010: | |
806 | case 0x7015: | |
807 | case 0x9018: | |
b1762862 | 808 | firm_offset = AR7010_FIRMWARE_TEXT; |
d654567d RM |
809 | break; |
810 | default: | |
b1762862 | 811 | firm_offset = AR9271_FIRMWARE_TEXT; |
d654567d RM |
812 | break; |
813 | } | |
b1762862 | 814 | |
fb9987d0 S |
815 | /* |
816 | * Issue FW download complete command to firmware. | |
817 | */ | |
818 | err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0), | |
819 | FIRMWARE_DOWNLOAD_COMP, | |
820 | 0x40 | USB_DIR_OUT, | |
b1762862 | 821 | firm_offset >> 8, 0, NULL, 0, HZ); |
fb9987d0 S |
822 | if (err) |
823 | return -EIO; | |
824 | ||
825 | dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n", | |
ce43cee5 | 826 | hif_dev->fw_name, (unsigned long) hif_dev->firmware->size); |
fb9987d0 S |
827 | |
828 | return 0; | |
829 | } | |
830 | ||
ce43cee5 | 831 | static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev) |
fb9987d0 | 832 | { |
4a0e8ecc RM |
833 | int ret, idx; |
834 | struct usb_host_interface *alt = &hif_dev->interface->altsetting[0]; | |
835 | struct usb_endpoint_descriptor *endp; | |
fb9987d0 S |
836 | |
837 | /* Request firmware */ | |
ce43cee5 S |
838 | ret = request_firmware(&hif_dev->firmware, hif_dev->fw_name, |
839 | &hif_dev->udev->dev); | |
fb9987d0 S |
840 | if (ret) { |
841 | dev_err(&hif_dev->udev->dev, | |
ce43cee5 | 842 | "ath9k_htc: Firmware - %s not found\n", hif_dev->fw_name); |
fb9987d0 S |
843 | goto err_fw_req; |
844 | } | |
845 | ||
fb9987d0 S |
846 | /* Alloc URBs */ |
847 | ret = ath9k_hif_usb_alloc_urbs(hif_dev); | |
848 | if (ret) { | |
849 | dev_err(&hif_dev->udev->dev, | |
850 | "ath9k_htc: Unable to allocate URBs\n"); | |
851 | goto err_urb; | |
852 | } | |
853 | ||
1d8af8ca SM |
854 | /* Download firmware */ |
855 | ret = ath9k_hif_usb_download_fw(hif_dev); | |
856 | if (ret) { | |
857 | dev_err(&hif_dev->udev->dev, | |
ce43cee5 S |
858 | "ath9k_htc: Firmware - %s download failed\n", |
859 | hif_dev->fw_name); | |
1d8af8ca SM |
860 | goto err_fw_download; |
861 | } | |
862 | ||
4a0e8ecc RM |
863 | /* On downloading the firmware to the target, the USB descriptor of EP4 |
864 | * is 'patched' to change the type of the endpoint to Bulk. This will | |
865 | * bring down CPU usage during the scan period. | |
866 | */ | |
867 | for (idx = 0; idx < alt->desc.bNumEndpoints; idx++) { | |
868 | endp = &alt->endpoint[idx].desc; | |
869 | if (((endp->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) | |
870 | == 0x04) && | |
871 | ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
872 | == USB_ENDPOINT_XFER_INT)) { | |
873 | endp->bmAttributes &= ~USB_ENDPOINT_XFERTYPE_MASK; | |
874 | endp->bmAttributes |= USB_ENDPOINT_XFER_BULK; | |
875 | endp->bInterval = 0; | |
876 | } | |
877 | } | |
878 | ||
fb9987d0 S |
879 | return 0; |
880 | ||
fb9987d0 | 881 | err_fw_download: |
1d8af8ca SM |
882 | ath9k_hif_usb_dealloc_urbs(hif_dev); |
883 | err_urb: | |
fb9987d0 S |
884 | release_firmware(hif_dev->firmware); |
885 | err_fw_req: | |
886 | hif_dev->firmware = NULL; | |
887 | return ret; | |
888 | } | |
889 | ||
fb9987d0 S |
890 | static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev) |
891 | { | |
892 | ath9k_hif_usb_dealloc_urbs(hif_dev); | |
893 | if (hif_dev->firmware) | |
894 | release_firmware(hif_dev->firmware); | |
895 | } | |
896 | ||
897 | static int ath9k_hif_usb_probe(struct usb_interface *interface, | |
898 | const struct usb_device_id *id) | |
899 | { | |
900 | struct usb_device *udev = interface_to_usbdev(interface); | |
901 | struct hif_device_usb *hif_dev; | |
fb9987d0 S |
902 | int ret = 0; |
903 | ||
904 | hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL); | |
905 | if (!hif_dev) { | |
906 | ret = -ENOMEM; | |
907 | goto err_alloc; | |
908 | } | |
909 | ||
910 | usb_get_dev(udev); | |
911 | hif_dev->udev = udev; | |
912 | hif_dev->interface = interface; | |
913 | hif_dev->device_id = id->idProduct; | |
914 | #ifdef CONFIG_PM | |
915 | udev->reset_resume = 1; | |
916 | #endif | |
917 | usb_set_intfdata(interface, hif_dev); | |
918 | ||
47fce026 SM |
919 | hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb, |
920 | &hif_dev->udev->dev); | |
921 | if (hif_dev->htc_handle == NULL) { | |
922 | ret = -ENOMEM; | |
923 | goto err_htc_hw_alloc; | |
924 | } | |
925 | ||
ce43cee5 S |
926 | /* Find out which firmware to load */ |
927 | ||
928 | switch(hif_dev->device_id) { | |
b1762862 | 929 | case 0x7010: |
ca6cff1f | 930 | case 0x7015: |
4e63f768 | 931 | case 0x9018: |
b1762862 | 932 | if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x0202) |
d0ee0ebe | 933 | hif_dev->fw_name = FIRMWARE_AR7010_1_1; |
b1762862 | 934 | else |
d0ee0ebe | 935 | hif_dev->fw_name = FIRMWARE_AR7010; |
b1762862 | 936 | break; |
ce43cee5 | 937 | default: |
d0ee0ebe | 938 | hif_dev->fw_name = FIRMWARE_AR9271; |
ce43cee5 S |
939 | break; |
940 | } | |
941 | ||
ce43cee5 | 942 | ret = ath9k_hif_usb_dev_init(hif_dev); |
fb9987d0 S |
943 | if (ret) { |
944 | ret = -EINVAL; | |
945 | goto err_hif_init_usb; | |
946 | } | |
947 | ||
47fce026 | 948 | ret = ath9k_htc_hw_init(hif_dev->htc_handle, |
21cb9879 VN |
949 | &hif_dev->udev->dev, hif_dev->device_id, |
950 | hif_dev->udev->product); | |
fb9987d0 S |
951 | if (ret) { |
952 | ret = -EINVAL; | |
953 | goto err_htc_hw_init; | |
954 | } | |
955 | ||
956 | dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n"); | |
957 | ||
958 | return 0; | |
959 | ||
960 | err_htc_hw_init: | |
fb9987d0 S |
961 | ath9k_hif_usb_dev_deinit(hif_dev); |
962 | err_hif_init_usb: | |
47fce026 SM |
963 | ath9k_htc_hw_free(hif_dev->htc_handle); |
964 | err_htc_hw_alloc: | |
fb9987d0 S |
965 | usb_set_intfdata(interface, NULL); |
966 | kfree(hif_dev); | |
967 | usb_put_dev(udev); | |
968 | err_alloc: | |
969 | return ret; | |
970 | } | |
971 | ||
62e4716a S |
972 | static void ath9k_hif_usb_reboot(struct usb_device *udev) |
973 | { | |
974 | u32 reboot_cmd = 0xffffffff; | |
975 | void *buf; | |
976 | int ret; | |
977 | ||
a465a2cc | 978 | buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL); |
62e4716a S |
979 | if (!buf) |
980 | return; | |
981 | ||
62e4716a S |
982 | ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE), |
983 | buf, 4, NULL, HZ); | |
984 | if (ret) | |
985 | dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n"); | |
986 | ||
987 | kfree(buf); | |
988 | } | |
989 | ||
fb9987d0 S |
990 | static void ath9k_hif_usb_disconnect(struct usb_interface *interface) |
991 | { | |
992 | struct usb_device *udev = interface_to_usbdev(interface); | |
993 | struct hif_device_usb *hif_dev = | |
994 | (struct hif_device_usb *) usb_get_intfdata(interface); | |
995 | ||
996 | if (hif_dev) { | |
d8f996f6 S |
997 | ath9k_htc_hw_deinit(hif_dev->htc_handle, |
998 | (udev->state == USB_STATE_NOTATTACHED) ? true : false); | |
fb9987d0 S |
999 | ath9k_htc_hw_free(hif_dev->htc_handle); |
1000 | ath9k_hif_usb_dev_deinit(hif_dev); | |
1001 | usb_set_intfdata(interface, NULL); | |
1002 | } | |
1003 | ||
1004 | if (hif_dev->flags & HIF_USB_START) | |
62e4716a | 1005 | ath9k_hif_usb_reboot(udev); |
fb9987d0 S |
1006 | |
1007 | kfree(hif_dev); | |
1008 | dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n"); | |
1009 | usb_put_dev(udev); | |
1010 | } | |
1011 | ||
1012 | #ifdef CONFIG_PM | |
1013 | static int ath9k_hif_usb_suspend(struct usb_interface *interface, | |
1014 | pm_message_t message) | |
1015 | { | |
1016 | struct hif_device_usb *hif_dev = | |
1017 | (struct hif_device_usb *) usb_get_intfdata(interface); | |
1018 | ||
1019 | ath9k_hif_usb_dealloc_urbs(hif_dev); | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | static int ath9k_hif_usb_resume(struct usb_interface *interface) | |
1025 | { | |
1026 | struct hif_device_usb *hif_dev = | |
1027 | (struct hif_device_usb *) usb_get_intfdata(interface); | |
1028 | int ret; | |
1029 | ||
1030 | ret = ath9k_hif_usb_alloc_urbs(hif_dev); | |
1031 | if (ret) | |
1032 | return ret; | |
1033 | ||
1034 | if (hif_dev->firmware) { | |
1035 | ret = ath9k_hif_usb_download_fw(hif_dev); | |
1036 | if (ret) | |
1037 | goto fail_resume; | |
1038 | } else { | |
1039 | ath9k_hif_usb_dealloc_urbs(hif_dev); | |
1040 | return -EIO; | |
1041 | } | |
1042 | ||
1043 | mdelay(100); | |
1044 | ||
1045 | ret = ath9k_htc_resume(hif_dev->htc_handle); | |
1046 | ||
1047 | if (ret) | |
1048 | goto fail_resume; | |
1049 | ||
1050 | return 0; | |
1051 | ||
1052 | fail_resume: | |
1053 | ath9k_hif_usb_dealloc_urbs(hif_dev); | |
1054 | ||
1055 | return ret; | |
1056 | } | |
1057 | #endif | |
1058 | ||
1059 | static struct usb_driver ath9k_hif_usb_driver = { | |
1060 | .name = "ath9k_hif_usb", | |
1061 | .probe = ath9k_hif_usb_probe, | |
1062 | .disconnect = ath9k_hif_usb_disconnect, | |
1063 | #ifdef CONFIG_PM | |
1064 | .suspend = ath9k_hif_usb_suspend, | |
1065 | .resume = ath9k_hif_usb_resume, | |
1066 | .reset_resume = ath9k_hif_usb_resume, | |
1067 | #endif | |
1068 | .id_table = ath9k_hif_usb_ids, | |
1069 | .soft_unbind = 1, | |
1070 | }; | |
1071 | ||
1072 | int ath9k_hif_usb_init(void) | |
1073 | { | |
1074 | return usb_register(&ath9k_hif_usb_driver); | |
1075 | } | |
1076 | ||
1077 | void ath9k_hif_usb_exit(void) | |
1078 | { | |
1079 | usb_deregister(&ath9k_hif_usb_driver); | |
1080 | } |