1 | /* |
2 | * Copyright (c) 2010-2011 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 <asm/unaligned.h> |
18 | #include "htc.h" |
19 | |
20 | MODULE_FIRMWARE(HTC_7010_MODULE_FW); |
21 | MODULE_FIRMWARE(HTC_9271_MODULE_FW); |
22 | |
23 | static const struct usb_device_id ath9k_hif_usb_ids[] = { |
24 | { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */ |
25 | { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */ |
26 | { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */ |
27 | { USB_DEVICE(0x07b8, 0x9271) }, /* Altai WA1011N-GU */ |
28 | { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */ |
29 | { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */ |
30 | { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */ |
31 | { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */ |
32 | { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */ |
33 | { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */ |
34 | { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */ |
35 | { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */ |
36 | { USB_DEVICE(0x040D, 0x3801) }, /* VIA */ |
37 | { USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */ |
38 | { USB_DEVICE(0x0cf3, 0xb002) }, /* Ubiquiti WifiStation */ |
39 | { USB_DEVICE(0x057c, 0x8403) }, /* AVM FRITZ!WLAN 11N v2 USB */ |
40 | { USB_DEVICE(0x0471, 0x209e) }, /* Philips (or NXP) PTA01 */ |
41 | { USB_DEVICE(0x1eda, 0x2315) }, /* AirTies */ |
42 | |
43 | { USB_DEVICE(0x0cf3, 0x7015), |
44 | .driver_info = AR9287_USB }, /* Atheros */ |
45 | |
46 | { USB_DEVICE(0x0cf3, 0x7010), |
47 | .driver_info = AR9280_USB }, /* Atheros */ |
48 | { USB_DEVICE(0x0846, 0x9018), |
49 | .driver_info = AR9280_USB }, /* Netgear WNDA3200 */ |
50 | { USB_DEVICE(0x083A, 0xA704), |
51 | .driver_info = AR9280_USB }, /* SMC Networks */ |
52 | { USB_DEVICE(0x0411, 0x017f), |
53 | .driver_info = AR9280_USB }, /* Sony UWA-BR100 */ |
54 | { USB_DEVICE(0x0411, 0x0197), |
55 | .driver_info = AR9280_USB }, /* Buffalo WLI-UV-AG300P */ |
56 | { USB_DEVICE(0x04da, 0x3904), |
57 | .driver_info = AR9280_USB }, |
58 | { USB_DEVICE(0x0930, 0x0a08), |
59 | .driver_info = AR9280_USB }, /* Toshiba WLM-20U2 and GN-1080 */ |
60 | |
61 | { USB_DEVICE(0x0cf3, 0x20ff), |
62 | .driver_info = STORAGE_DEVICE }, |
63 | |
64 | { }, |
65 | }; |
66 | |
67 | MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids); |
68 | |
69 | static int __hif_usb_tx(struct hif_device_usb *hif_dev); |
70 | |
71 | static void hif_usb_regout_cb(struct urb *urb) |
72 | { |
73 | struct cmd_buf *cmd = urb->context; |
74 | |
75 | switch (urb->status) { |
76 | case 0: |
77 | break; |
78 | case -ENOENT: |
79 | case -ECONNRESET: |
80 | case -ENODEV: |
81 | case -ESHUTDOWN: |
82 | goto free; |
83 | default: |
84 | break; |
85 | } |
86 | |
87 | if (cmd) { |
88 | ath9k_htc_txcompletion_cb(htc_handle: cmd->hif_dev->htc_handle, |
89 | skb: cmd->skb, txok: true); |
90 | kfree(objp: cmd); |
91 | } |
92 | |
93 | return; |
94 | free: |
95 | kfree_skb(skb: cmd->skb); |
96 | kfree(objp: cmd); |
97 | } |
98 | |
99 | static int hif_usb_send_regout(struct hif_device_usb *hif_dev, |
100 | struct sk_buff *skb) |
101 | { |
102 | struct urb *urb; |
103 | struct cmd_buf *cmd; |
104 | int ret = 0; |
105 | |
106 | urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
107 | if (urb == NULL) |
108 | return -ENOMEM; |
109 | |
110 | cmd = kzalloc(size: sizeof(*cmd), GFP_KERNEL); |
111 | if (cmd == NULL) { |
112 | usb_free_urb(urb); |
113 | return -ENOMEM; |
114 | } |
115 | |
116 | cmd->skb = skb; |
117 | cmd->hif_dev = hif_dev; |
118 | |
119 | usb_fill_int_urb(urb, dev: hif_dev->udev, |
120 | usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE), |
121 | transfer_buffer: skb->data, buffer_length: skb->len, |
122 | complete_fn: hif_usb_regout_cb, context: cmd, interval: 1); |
123 | |
124 | usb_anchor_urb(urb, anchor: &hif_dev->regout_submitted); |
125 | ret = usb_submit_urb(urb, GFP_KERNEL); |
126 | if (ret) { |
127 | usb_unanchor_urb(urb); |
128 | kfree(objp: cmd); |
129 | } |
130 | usb_free_urb(urb); |
131 | |
132 | return ret; |
133 | } |
134 | |
135 | static void hif_usb_mgmt_cb(struct urb *urb) |
136 | { |
137 | struct cmd_buf *cmd = urb->context; |
138 | struct hif_device_usb *hif_dev; |
139 | unsigned long flags; |
140 | bool txok = true; |
141 | |
142 | if (!cmd || !cmd->skb || !cmd->hif_dev) |
143 | return; |
144 | |
145 | hif_dev = cmd->hif_dev; |
146 | |
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_irqsave(&hif_dev->tx.tx_lock, flags); |
161 | if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) { |
162 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
163 | dev_kfree_skb_any(skb: cmd->skb); |
164 | kfree(objp: cmd); |
165 | return; |
166 | } |
167 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
168 | |
169 | break; |
170 | default: |
171 | txok = false; |
172 | break; |
173 | } |
174 | |
175 | skb_pull(skb: cmd->skb, len: 4); |
176 | ath9k_htc_txcompletion_cb(htc_handle: cmd->hif_dev->htc_handle, |
177 | skb: cmd->skb, txok); |
178 | kfree(objp: cmd); |
179 | } |
180 | |
181 | static 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(iso_packets: 0, GFP_ATOMIC); |
190 | if (urb == NULL) |
191 | return -ENOMEM; |
192 | |
193 | cmd = kzalloc(size: 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 = skb_push(skb, len: 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, dev: hif_dev->udev, |
207 | usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE), |
208 | transfer_buffer: skb->data, buffer_length: skb->len, |
209 | complete_fn: hif_usb_mgmt_cb, context: cmd); |
210 | |
211 | usb_anchor_urb(urb, anchor: &hif_dev->mgmt_submitted); |
212 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
213 | if (ret) { |
214 | usb_unanchor_urb(urb); |
215 | kfree(objp: cmd); |
216 | } |
217 | usb_free_urb(urb); |
218 | |
219 | return ret; |
220 | } |
221 | |
222 | static 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); |
229 | } |
230 | } |
231 | |
232 | static 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(list: queue)) != NULL) { |
239 | #ifdef CONFIG_ATH9K_HTC_DEBUGFS |
240 | int ln = skb->len; |
241 | #endif |
242 | ath9k_htc_txcompletion_cb(htc_handle: hif_dev->htc_handle, |
243 | skb, txok); |
244 | if (txok) { |
245 | TX_STAT_INC(hif_dev, skb_success); |
246 | TX_STAT_ADD(hif_dev, skb_success_bytes, ln); |
247 | } |
248 | else |
249 | TX_STAT_INC(hif_dev, skb_failed); |
250 | } |
251 | } |
252 | |
253 | static void hif_usb_tx_cb(struct urb *urb) |
254 | { |
255 | struct tx_buf *tx_buf = urb->context; |
256 | struct hif_device_usb *hif_dev; |
257 | bool txok = true; |
258 | |
259 | if (!tx_buf || !tx_buf->hif_dev) |
260 | return; |
261 | |
262 | hif_dev = tx_buf->hif_dev; |
263 | |
264 | switch (urb->status) { |
265 | case 0: |
266 | break; |
267 | case -ENOENT: |
268 | case -ECONNRESET: |
269 | case -ENODEV: |
270 | case -ESHUTDOWN: |
271 | txok = false; |
272 | |
273 | /* |
274 | * If the URBs are being flushed, no need to add this |
275 | * URB to the free list. |
276 | */ |
277 | spin_lock(lock: &hif_dev->tx.tx_lock); |
278 | if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) { |
279 | spin_unlock(lock: &hif_dev->tx.tx_lock); |
280 | ath9k_skb_queue_purge(hif_dev, list: &tx_buf->skb_queue); |
281 | return; |
282 | } |
283 | spin_unlock(lock: &hif_dev->tx.tx_lock); |
284 | |
285 | break; |
286 | default: |
287 | txok = false; |
288 | break; |
289 | } |
290 | |
291 | ath9k_skb_queue_complete(hif_dev, queue: &tx_buf->skb_queue, txok); |
292 | |
293 | /* Re-initialize the SKB queue */ |
294 | tx_buf->len = tx_buf->offset = 0; |
295 | __skb_queue_head_init(list: &tx_buf->skb_queue); |
296 | |
297 | /* Add this TX buffer to the free list */ |
298 | spin_lock(lock: &hif_dev->tx.tx_lock); |
299 | list_move_tail(list: &tx_buf->list, head: &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(hif_dev, buf_completed); |
304 | spin_unlock(lock: &hif_dev->tx.tx_lock); |
305 | } |
306 | |
307 | /* TX lock has to be taken */ |
308 | static 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; |
313 | u16 tx_skb_cnt = 0; |
314 | u8 *buf; |
315 | __le16 *hdr; |
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(head: &hif_dev->tx.tx_buf)) |
322 | return 0; |
323 | |
324 | tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list); |
325 | list_move_tail(list: &tx_buf->list, head: &hif_dev->tx.tx_pending); |
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(list: &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; |
340 | hdr = (__le16 *)buf; |
341 | *hdr++ = cpu_to_le16(nskb->len); |
342 | *hdr++ = cpu_to_le16(ATH_USB_TX_STREAM_MODE_TAG); |
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(list: &tx_buf->skb_queue, newsk: nskb); |
354 | TX_STAT_INC(hif_dev, skb_queued); |
355 | } |
356 | |
357 | usb_fill_bulk_urb(urb: tx_buf->urb, dev: hif_dev->udev, |
358 | usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE), |
359 | transfer_buffer: tx_buf->buf, buffer_length: tx_buf->len, |
360 | complete_fn: hif_usb_tx_cb, context: tx_buf); |
361 | |
362 | ret = usb_submit_urb(urb: tx_buf->urb, GFP_ATOMIC); |
363 | if (ret) { |
364 | tx_buf->len = tx_buf->offset = 0; |
365 | ath9k_skb_queue_complete(hif_dev, queue: &tx_buf->skb_queue, txok: false); |
366 | __skb_queue_head_init(list: &tx_buf->skb_queue); |
367 | list_move_tail(list: &tx_buf->list, head: &hif_dev->tx.tx_buf); |
368 | hif_dev->tx.tx_buf_cnt++; |
369 | } else { |
370 | TX_STAT_INC(hif_dev, buf_queued); |
371 | } |
372 | |
373 | return ret; |
374 | } |
375 | |
376 | static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb) |
377 | { |
378 | struct ath9k_htc_tx_ctl *tx_ctl; |
379 | unsigned long flags; |
380 | int ret = 0; |
381 | |
382 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
383 | |
384 | if (hif_dev->tx.flags & HIF_USB_TX_STOP) { |
385 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
386 | return -ENODEV; |
387 | } |
388 | |
389 | /* Check if the max queue count has been reached */ |
390 | if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) { |
391 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
392 | return -ENOMEM; |
393 | } |
394 | |
395 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
396 | |
397 | tx_ctl = HTC_SKB_CB(skb); |
398 | |
399 | /* Mgmt/Beacon frames don't use the TX buffer pool */ |
400 | if ((tx_ctl->type == ATH9K_HTC_MGMT) || |
401 | (tx_ctl->type == ATH9K_HTC_BEACON)) { |
402 | ret = hif_usb_send_mgmt(hif_dev, skb); |
403 | } |
404 | |
405 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
406 | |
407 | if ((tx_ctl->type == ATH9K_HTC_NORMAL) || |
408 | (tx_ctl->type == ATH9K_HTC_AMPDU)) { |
409 | __skb_queue_tail(list: &hif_dev->tx.tx_skb_queue, newsk: skb); |
410 | hif_dev->tx.tx_skb_cnt++; |
411 | } |
412 | |
413 | /* Check if AMPDUs have to be sent immediately */ |
414 | if ((hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) && |
415 | (hif_dev->tx.tx_skb_cnt < 2)) { |
416 | __hif_usb_tx(hif_dev); |
417 | } |
418 | |
419 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
420 | |
421 | return ret; |
422 | } |
423 | |
424 | static void hif_usb_start(void *hif_handle) |
425 | { |
426 | struct hif_device_usb *hif_dev = hif_handle; |
427 | unsigned long flags; |
428 | |
429 | hif_dev->flags |= HIF_USB_START; |
430 | |
431 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
432 | hif_dev->tx.flags &= ~HIF_USB_TX_STOP; |
433 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
434 | } |
435 | |
436 | static void hif_usb_stop(void *hif_handle) |
437 | { |
438 | struct hif_device_usb *hif_dev = hif_handle; |
439 | struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL; |
440 | unsigned long flags; |
441 | |
442 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
443 | ath9k_skb_queue_complete(hif_dev, queue: &hif_dev->tx.tx_skb_queue, txok: false); |
444 | hif_dev->tx.tx_skb_cnt = 0; |
445 | hif_dev->tx.flags |= HIF_USB_TX_STOP; |
446 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
447 | |
448 | /* The pending URBs have to be canceled. */ |
449 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
450 | list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
451 | &hif_dev->tx.tx_pending, list) { |
452 | usb_get_urb(urb: tx_buf->urb); |
453 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
454 | usb_kill_urb(urb: tx_buf->urb); |
455 | list_del(entry: &tx_buf->list); |
456 | usb_free_urb(urb: tx_buf->urb); |
457 | kfree(objp: tx_buf->buf); |
458 | kfree(objp: tx_buf); |
459 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
460 | } |
461 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
462 | |
463 | usb_kill_anchored_urbs(anchor: &hif_dev->mgmt_submitted); |
464 | } |
465 | |
466 | static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb) |
467 | { |
468 | struct hif_device_usb *hif_dev = hif_handle; |
469 | int ret = 0; |
470 | |
471 | switch (pipe_id) { |
472 | case USB_WLAN_TX_PIPE: |
473 | ret = hif_usb_send_tx(hif_dev, skb); |
474 | break; |
475 | case USB_REG_OUT_PIPE: |
476 | ret = hif_usb_send_regout(hif_dev, skb); |
477 | break; |
478 | default: |
479 | dev_err(&hif_dev->udev->dev, |
480 | "ath9k_htc: Invalid TX pipe: %d\n" , pipe_id); |
481 | ret = -EINVAL; |
482 | break; |
483 | } |
484 | |
485 | return ret; |
486 | } |
487 | |
488 | static inline bool check_index(struct sk_buff *skb, u8 idx) |
489 | { |
490 | struct ath9k_htc_tx_ctl *tx_ctl; |
491 | |
492 | tx_ctl = HTC_SKB_CB(skb); |
493 | |
494 | if ((tx_ctl->type == ATH9K_HTC_AMPDU) && |
495 | (tx_ctl->sta_idx == idx)) |
496 | return true; |
497 | |
498 | return false; |
499 | } |
500 | |
501 | static void hif_usb_sta_drain(void *hif_handle, u8 idx) |
502 | { |
503 | struct hif_device_usb *hif_dev = hif_handle; |
504 | struct sk_buff *skb, *tmp; |
505 | unsigned long flags; |
506 | |
507 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
508 | |
509 | skb_queue_walk_safe(&hif_dev->tx.tx_skb_queue, skb, tmp) { |
510 | if (check_index(skb, idx)) { |
511 | __skb_unlink(skb, list: &hif_dev->tx.tx_skb_queue); |
512 | ath9k_htc_txcompletion_cb(htc_handle: hif_dev->htc_handle, |
513 | skb, txok: false); |
514 | hif_dev->tx.tx_skb_cnt--; |
515 | TX_STAT_INC(hif_dev, skb_failed); |
516 | } |
517 | } |
518 | |
519 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
520 | } |
521 | |
522 | static struct ath9k_htc_hif hif_usb = { |
523 | .transport = ATH9K_HIF_USB, |
524 | .name = "ath9k_hif_usb" , |
525 | |
526 | .control_ul_pipe = USB_REG_OUT_PIPE, |
527 | .control_dl_pipe = USB_REG_IN_PIPE, |
528 | |
529 | .start = hif_usb_start, |
530 | .stop = hif_usb_stop, |
531 | .sta_drain = hif_usb_sta_drain, |
532 | .send = hif_usb_send, |
533 | }; |
534 | |
535 | /* Need to free remain_skb allocated in ath9k_hif_usb_rx_stream |
536 | * in case ath9k_hif_usb_rx_stream wasn't called next time to |
537 | * process the buffer and subsequently free it. |
538 | */ |
539 | static void ath9k_hif_usb_free_rx_remain_skb(struct hif_device_usb *hif_dev) |
540 | { |
541 | unsigned long flags; |
542 | |
543 | spin_lock_irqsave(&hif_dev->rx_lock, flags); |
544 | if (hif_dev->remain_skb) { |
545 | dev_kfree_skb_any(skb: hif_dev->remain_skb); |
546 | hif_dev->remain_skb = NULL; |
547 | hif_dev->rx_remain_len = 0; |
548 | RX_STAT_INC(hif_dev, skb_dropped); |
549 | } |
550 | spin_unlock_irqrestore(lock: &hif_dev->rx_lock, flags); |
551 | } |
552 | |
553 | static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev, |
554 | struct sk_buff *skb) |
555 | { |
556 | struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER]; |
557 | int index = 0, i, len = skb->len; |
558 | int rx_remain_len, rx_pkt_len; |
559 | u16 pool_index = 0; |
560 | u8 *ptr; |
561 | |
562 | spin_lock(lock: &hif_dev->rx_lock); |
563 | |
564 | rx_remain_len = hif_dev->rx_remain_len; |
565 | rx_pkt_len = hif_dev->rx_transfer_len; |
566 | |
567 | if (rx_remain_len != 0) { |
568 | struct sk_buff *remain_skb = hif_dev->remain_skb; |
569 | |
570 | if (remain_skb) { |
571 | ptr = (u8 *) remain_skb->data; |
572 | |
573 | index = rx_remain_len; |
574 | rx_remain_len -= hif_dev->rx_pad_len; |
575 | ptr += rx_pkt_len; |
576 | |
577 | memcpy(ptr, skb->data, rx_remain_len); |
578 | |
579 | rx_pkt_len += rx_remain_len; |
580 | skb_put(skb: remain_skb, len: rx_pkt_len); |
581 | |
582 | skb_pool[pool_index++] = remain_skb; |
583 | hif_dev->remain_skb = NULL; |
584 | hif_dev->rx_remain_len = 0; |
585 | } else { |
586 | index = rx_remain_len; |
587 | } |
588 | } |
589 | |
590 | spin_unlock(lock: &hif_dev->rx_lock); |
591 | |
592 | while (index < len) { |
593 | u16 pkt_len; |
594 | u16 pkt_tag; |
595 | u16 pad_len; |
596 | int chk_idx; |
597 | |
598 | ptr = (u8 *) skb->data; |
599 | |
600 | pkt_len = get_unaligned_le16(p: ptr + index); |
601 | pkt_tag = get_unaligned_le16(p: ptr + index + 2); |
602 | |
603 | /* It is supposed that if we have an invalid pkt_tag or |
604 | * pkt_len then the whole input SKB is considered invalid |
605 | * and dropped; the associated packets already in skb_pool |
606 | * are dropped, too. |
607 | */ |
608 | if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) { |
609 | RX_STAT_INC(hif_dev, skb_dropped); |
610 | goto invalid_pkt; |
611 | } |
612 | |
613 | if (pkt_len > 2 * MAX_RX_BUF_SIZE) { |
614 | dev_err(&hif_dev->udev->dev, |
615 | "ath9k_htc: invalid pkt_len (%x)\n" , pkt_len); |
616 | RX_STAT_INC(hif_dev, skb_dropped); |
617 | goto invalid_pkt; |
618 | } |
619 | |
620 | pad_len = 4 - (pkt_len & 0x3); |
621 | if (pad_len == 4) |
622 | pad_len = 0; |
623 | |
624 | chk_idx = index; |
625 | index = index + 4 + pkt_len + pad_len; |
626 | |
627 | if (index > MAX_RX_BUF_SIZE) { |
628 | spin_lock(lock: &hif_dev->rx_lock); |
629 | nskb = __dev_alloc_skb(length: pkt_len + 32, GFP_ATOMIC); |
630 | if (!nskb) { |
631 | dev_err(&hif_dev->udev->dev, |
632 | "ath9k_htc: RX memory allocation error\n" ); |
633 | spin_unlock(lock: &hif_dev->rx_lock); |
634 | goto err; |
635 | } |
636 | |
637 | hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE; |
638 | hif_dev->rx_transfer_len = |
639 | MAX_RX_BUF_SIZE - chk_idx - 4; |
640 | hif_dev->rx_pad_len = pad_len; |
641 | |
642 | skb_reserve(skb: nskb, len: 32); |
643 | RX_STAT_INC(hif_dev, skb_allocated); |
644 | |
645 | memcpy(nskb->data, &(skb->data[chk_idx+4]), |
646 | hif_dev->rx_transfer_len); |
647 | |
648 | /* Record the buffer pointer */ |
649 | hif_dev->remain_skb = nskb; |
650 | spin_unlock(lock: &hif_dev->rx_lock); |
651 | } else { |
652 | if (pool_index == MAX_PKT_NUM_IN_TRANSFER) { |
653 | dev_err(&hif_dev->udev->dev, |
654 | "ath9k_htc: over RX MAX_PKT_NUM\n" ); |
655 | goto err; |
656 | } |
657 | nskb = __dev_alloc_skb(length: pkt_len + 32, GFP_ATOMIC); |
658 | if (!nskb) { |
659 | dev_err(&hif_dev->udev->dev, |
660 | "ath9k_htc: RX memory allocation error\n" ); |
661 | goto err; |
662 | } |
663 | skb_reserve(skb: nskb, len: 32); |
664 | RX_STAT_INC(hif_dev, skb_allocated); |
665 | |
666 | memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len); |
667 | skb_put(skb: nskb, len: pkt_len); |
668 | skb_pool[pool_index++] = nskb; |
669 | } |
670 | } |
671 | |
672 | err: |
673 | for (i = 0; i < pool_index; i++) { |
674 | RX_STAT_ADD(hif_dev, skb_completed_bytes, skb_pool[i]->len); |
675 | ath9k_htc_rx_msg(htc_handle: hif_dev->htc_handle, skb: skb_pool[i], |
676 | len: skb_pool[i]->len, USB_WLAN_RX_PIPE); |
677 | RX_STAT_INC(hif_dev, skb_completed); |
678 | } |
679 | return; |
680 | invalid_pkt: |
681 | for (i = 0; i < pool_index; i++) { |
682 | dev_kfree_skb_any(skb: skb_pool[i]); |
683 | RX_STAT_INC(hif_dev, skb_dropped); |
684 | } |
685 | return; |
686 | } |
687 | |
688 | static void ath9k_hif_usb_rx_cb(struct urb *urb) |
689 | { |
690 | struct rx_buf *rx_buf = urb->context; |
691 | struct hif_device_usb *hif_dev = rx_buf->hif_dev; |
692 | struct sk_buff *skb = rx_buf->skb; |
693 | int ret; |
694 | |
695 | if (!skb) |
696 | return; |
697 | |
698 | if (!hif_dev) |
699 | goto free; |
700 | |
701 | switch (urb->status) { |
702 | case 0: |
703 | break; |
704 | case -ENOENT: |
705 | case -ECONNRESET: |
706 | case -ENODEV: |
707 | case -ESHUTDOWN: |
708 | goto free; |
709 | default: |
710 | goto resubmit; |
711 | } |
712 | |
713 | if (likely(urb->actual_length != 0)) { |
714 | skb_put(skb, len: urb->actual_length); |
715 | ath9k_hif_usb_rx_stream(hif_dev, skb); |
716 | } |
717 | |
718 | resubmit: |
719 | skb_reset_tail_pointer(skb); |
720 | skb_trim(skb, len: 0); |
721 | |
722 | usb_anchor_urb(urb, anchor: &hif_dev->rx_submitted); |
723 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
724 | if (ret) { |
725 | usb_unanchor_urb(urb); |
726 | goto free; |
727 | } |
728 | |
729 | return; |
730 | free: |
731 | kfree_skb(skb); |
732 | kfree(objp: rx_buf); |
733 | } |
734 | |
735 | static void ath9k_hif_usb_reg_in_cb(struct urb *urb) |
736 | { |
737 | struct rx_buf *rx_buf = urb->context; |
738 | struct hif_device_usb *hif_dev = rx_buf->hif_dev; |
739 | struct sk_buff *skb = rx_buf->skb; |
740 | int ret; |
741 | |
742 | if (!skb) |
743 | return; |
744 | |
745 | if (!hif_dev) |
746 | goto free_skb; |
747 | |
748 | switch (urb->status) { |
749 | case 0: |
750 | break; |
751 | case -ENOENT: |
752 | case -ECONNRESET: |
753 | case -ENODEV: |
754 | case -ESHUTDOWN: |
755 | goto free_skb; |
756 | default: |
757 | skb_reset_tail_pointer(skb); |
758 | skb_trim(skb, len: 0); |
759 | |
760 | goto resubmit; |
761 | } |
762 | |
763 | if (likely(urb->actual_length != 0)) { |
764 | skb_put(skb, len: urb->actual_length); |
765 | |
766 | /* |
767 | * Process the command first. |
768 | * skb is either freed here or passed to be |
769 | * managed to another callback function. |
770 | */ |
771 | ath9k_htc_rx_msg(htc_handle: hif_dev->htc_handle, skb, |
772 | len: skb->len, USB_REG_IN_PIPE); |
773 | |
774 | skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC); |
775 | if (!skb) { |
776 | dev_err(&hif_dev->udev->dev, |
777 | "ath9k_htc: REG_IN memory allocation failure\n" ); |
778 | goto free_rx_buf; |
779 | } |
780 | |
781 | rx_buf->skb = skb; |
782 | |
783 | usb_fill_int_urb(urb, dev: hif_dev->udev, |
784 | usb_rcvintpipe(hif_dev->udev, |
785 | USB_REG_IN_PIPE), |
786 | transfer_buffer: skb->data, MAX_REG_IN_BUF_SIZE, |
787 | complete_fn: ath9k_hif_usb_reg_in_cb, context: rx_buf, interval: 1); |
788 | } |
789 | |
790 | resubmit: |
791 | usb_anchor_urb(urb, anchor: &hif_dev->reg_in_submitted); |
792 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
793 | if (ret) { |
794 | usb_unanchor_urb(urb); |
795 | goto free_skb; |
796 | } |
797 | |
798 | return; |
799 | free_skb: |
800 | kfree_skb(skb); |
801 | free_rx_buf: |
802 | kfree(objp: rx_buf); |
803 | urb->context = NULL; |
804 | } |
805 | |
806 | static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev) |
807 | { |
808 | struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL; |
809 | unsigned long flags; |
810 | |
811 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
812 | list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
813 | &hif_dev->tx.tx_buf, list) { |
814 | list_del(entry: &tx_buf->list); |
815 | usb_free_urb(urb: tx_buf->urb); |
816 | kfree(objp: tx_buf->buf); |
817 | kfree(objp: tx_buf); |
818 | } |
819 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
820 | |
821 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
822 | hif_dev->tx.flags |= HIF_USB_TX_FLUSH; |
823 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
824 | |
825 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
826 | list_for_each_entry_safe(tx_buf, tx_buf_tmp, |
827 | &hif_dev->tx.tx_pending, list) { |
828 | usb_get_urb(urb: tx_buf->urb); |
829 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
830 | usb_kill_urb(urb: tx_buf->urb); |
831 | list_del(entry: &tx_buf->list); |
832 | usb_free_urb(urb: tx_buf->urb); |
833 | kfree(objp: tx_buf->buf); |
834 | kfree(objp: tx_buf); |
835 | spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); |
836 | } |
837 | spin_unlock_irqrestore(lock: &hif_dev->tx.tx_lock, flags); |
838 | |
839 | usb_kill_anchored_urbs(anchor: &hif_dev->mgmt_submitted); |
840 | } |
841 | |
842 | static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev) |
843 | { |
844 | struct tx_buf *tx_buf; |
845 | int i; |
846 | |
847 | INIT_LIST_HEAD(list: &hif_dev->tx.tx_buf); |
848 | INIT_LIST_HEAD(list: &hif_dev->tx.tx_pending); |
849 | spin_lock_init(&hif_dev->tx.tx_lock); |
850 | __skb_queue_head_init(list: &hif_dev->tx.tx_skb_queue); |
851 | init_usb_anchor(anchor: &hif_dev->mgmt_submitted); |
852 | |
853 | for (i = 0; i < MAX_TX_URB_NUM; i++) { |
854 | tx_buf = kzalloc(size: sizeof(*tx_buf), GFP_KERNEL); |
855 | if (!tx_buf) |
856 | goto err; |
857 | |
858 | tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL); |
859 | if (!tx_buf->buf) |
860 | goto err; |
861 | |
862 | tx_buf->urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
863 | if (!tx_buf->urb) |
864 | goto err; |
865 | |
866 | tx_buf->hif_dev = hif_dev; |
867 | __skb_queue_head_init(list: &tx_buf->skb_queue); |
868 | |
869 | list_add_tail(new: &tx_buf->list, head: &hif_dev->tx.tx_buf); |
870 | } |
871 | |
872 | hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM; |
873 | |
874 | return 0; |
875 | err: |
876 | if (tx_buf) { |
877 | kfree(objp: tx_buf->buf); |
878 | kfree(objp: tx_buf); |
879 | } |
880 | ath9k_hif_usb_dealloc_tx_urbs(hif_dev); |
881 | return -ENOMEM; |
882 | } |
883 | |
884 | static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev) |
885 | { |
886 | usb_kill_anchored_urbs(anchor: &hif_dev->rx_submitted); |
887 | ath9k_hif_usb_free_rx_remain_skb(hif_dev); |
888 | } |
889 | |
890 | static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev) |
891 | { |
892 | struct rx_buf *rx_buf = NULL; |
893 | struct sk_buff *skb = NULL; |
894 | struct urb *urb = NULL; |
895 | int i, ret; |
896 | |
897 | init_usb_anchor(anchor: &hif_dev->rx_submitted); |
898 | spin_lock_init(&hif_dev->rx_lock); |
899 | |
900 | for (i = 0; i < MAX_RX_URB_NUM; i++) { |
901 | |
902 | rx_buf = kzalloc(size: sizeof(*rx_buf), GFP_KERNEL); |
903 | if (!rx_buf) { |
904 | ret = -ENOMEM; |
905 | goto err_rxb; |
906 | } |
907 | |
908 | /* Allocate URB */ |
909 | urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
910 | if (urb == NULL) { |
911 | ret = -ENOMEM; |
912 | goto err_urb; |
913 | } |
914 | |
915 | /* Allocate buffer */ |
916 | skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL); |
917 | if (!skb) { |
918 | ret = -ENOMEM; |
919 | goto err_skb; |
920 | } |
921 | |
922 | rx_buf->hif_dev = hif_dev; |
923 | rx_buf->skb = skb; |
924 | |
925 | usb_fill_bulk_urb(urb, dev: hif_dev->udev, |
926 | usb_rcvbulkpipe(hif_dev->udev, |
927 | USB_WLAN_RX_PIPE), |
928 | transfer_buffer: skb->data, MAX_RX_BUF_SIZE, |
929 | complete_fn: ath9k_hif_usb_rx_cb, context: rx_buf); |
930 | |
931 | /* Anchor URB */ |
932 | usb_anchor_urb(urb, anchor: &hif_dev->rx_submitted); |
933 | |
934 | /* Submit URB */ |
935 | ret = usb_submit_urb(urb, GFP_KERNEL); |
936 | if (ret) { |
937 | usb_unanchor_urb(urb); |
938 | goto err_submit; |
939 | } |
940 | |
941 | /* |
942 | * Drop reference count. |
943 | * This ensures that the URB is freed when killing them. |
944 | */ |
945 | usb_free_urb(urb); |
946 | } |
947 | |
948 | return 0; |
949 | |
950 | err_submit: |
951 | kfree_skb(skb); |
952 | err_skb: |
953 | usb_free_urb(urb); |
954 | err_urb: |
955 | kfree(objp: rx_buf); |
956 | err_rxb: |
957 | ath9k_hif_usb_dealloc_rx_urbs(hif_dev); |
958 | return ret; |
959 | } |
960 | |
961 | static void ath9k_hif_usb_dealloc_reg_in_urbs(struct hif_device_usb *hif_dev) |
962 | { |
963 | usb_kill_anchored_urbs(anchor: &hif_dev->reg_in_submitted); |
964 | } |
965 | |
966 | static int ath9k_hif_usb_alloc_reg_in_urbs(struct hif_device_usb *hif_dev) |
967 | { |
968 | struct rx_buf *rx_buf = NULL; |
969 | struct sk_buff *skb = NULL; |
970 | struct urb *urb = NULL; |
971 | int i, ret; |
972 | |
973 | init_usb_anchor(anchor: &hif_dev->reg_in_submitted); |
974 | |
975 | for (i = 0; i < MAX_REG_IN_URB_NUM; i++) { |
976 | |
977 | rx_buf = kzalloc(size: sizeof(*rx_buf), GFP_KERNEL); |
978 | if (!rx_buf) { |
979 | ret = -ENOMEM; |
980 | goto err_rxb; |
981 | } |
982 | |
983 | /* Allocate URB */ |
984 | urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
985 | if (urb == NULL) { |
986 | ret = -ENOMEM; |
987 | goto err_urb; |
988 | } |
989 | |
990 | /* Allocate buffer */ |
991 | skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL); |
992 | if (!skb) { |
993 | ret = -ENOMEM; |
994 | goto err_skb; |
995 | } |
996 | |
997 | rx_buf->hif_dev = hif_dev; |
998 | rx_buf->skb = skb; |
999 | |
1000 | usb_fill_int_urb(urb, dev: hif_dev->udev, |
1001 | usb_rcvintpipe(hif_dev->udev, |
1002 | USB_REG_IN_PIPE), |
1003 | transfer_buffer: skb->data, MAX_REG_IN_BUF_SIZE, |
1004 | complete_fn: ath9k_hif_usb_reg_in_cb, context: rx_buf, interval: 1); |
1005 | |
1006 | /* Anchor URB */ |
1007 | usb_anchor_urb(urb, anchor: &hif_dev->reg_in_submitted); |
1008 | |
1009 | /* Submit URB */ |
1010 | ret = usb_submit_urb(urb, GFP_KERNEL); |
1011 | if (ret) { |
1012 | usb_unanchor_urb(urb); |
1013 | goto err_submit; |
1014 | } |
1015 | |
1016 | /* |
1017 | * Drop reference count. |
1018 | * This ensures that the URB is freed when killing them. |
1019 | */ |
1020 | usb_free_urb(urb); |
1021 | } |
1022 | |
1023 | return 0; |
1024 | |
1025 | err_submit: |
1026 | kfree_skb(skb); |
1027 | err_skb: |
1028 | usb_free_urb(urb); |
1029 | err_urb: |
1030 | kfree(objp: rx_buf); |
1031 | err_rxb: |
1032 | ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev); |
1033 | return ret; |
1034 | } |
1035 | |
1036 | static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev) |
1037 | { |
1038 | /* Register Write */ |
1039 | init_usb_anchor(anchor: &hif_dev->regout_submitted); |
1040 | |
1041 | /* TX */ |
1042 | if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0) |
1043 | goto err; |
1044 | |
1045 | /* RX */ |
1046 | if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0) |
1047 | goto err_rx; |
1048 | |
1049 | /* Register Read */ |
1050 | if (ath9k_hif_usb_alloc_reg_in_urbs(hif_dev) < 0) |
1051 | goto err_reg; |
1052 | |
1053 | return 0; |
1054 | err_reg: |
1055 | ath9k_hif_usb_dealloc_rx_urbs(hif_dev); |
1056 | err_rx: |
1057 | ath9k_hif_usb_dealloc_tx_urbs(hif_dev); |
1058 | err: |
1059 | return -ENOMEM; |
1060 | } |
1061 | |
1062 | void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev) |
1063 | { |
1064 | usb_kill_anchored_urbs(anchor: &hif_dev->regout_submitted); |
1065 | ath9k_hif_usb_dealloc_reg_in_urbs(hif_dev); |
1066 | ath9k_hif_usb_dealloc_tx_urbs(hif_dev); |
1067 | ath9k_hif_usb_dealloc_rx_urbs(hif_dev); |
1068 | } |
1069 | |
1070 | static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev) |
1071 | { |
1072 | int transfer, err; |
1073 | const void *data = hif_dev->fw_data; |
1074 | size_t len = hif_dev->fw_size; |
1075 | u32 addr = AR9271_FIRMWARE; |
1076 | u8 *buf = kzalloc(size: 4096, GFP_KERNEL); |
1077 | u32 firm_offset; |
1078 | |
1079 | if (!buf) |
1080 | return -ENOMEM; |
1081 | |
1082 | while (len) { |
1083 | transfer = min_t(size_t, len, 4096); |
1084 | memcpy(buf, data, transfer); |
1085 | |
1086 | err = usb_control_msg(dev: hif_dev->udev, |
1087 | usb_sndctrlpipe(hif_dev->udev, 0), |
1088 | FIRMWARE_DOWNLOAD, requesttype: 0x40 | USB_DIR_OUT, |
1089 | value: addr >> 8, index: 0, data: buf, size: transfer, |
1090 | USB_MSG_TIMEOUT); |
1091 | if (err < 0) { |
1092 | kfree(objp: buf); |
1093 | return err; |
1094 | } |
1095 | |
1096 | len -= transfer; |
1097 | data += transfer; |
1098 | addr += transfer; |
1099 | } |
1100 | kfree(objp: buf); |
1101 | |
1102 | if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info)) |
1103 | firm_offset = AR7010_FIRMWARE_TEXT; |
1104 | else |
1105 | firm_offset = AR9271_FIRMWARE_TEXT; |
1106 | |
1107 | /* |
1108 | * Issue FW download complete command to firmware. |
1109 | */ |
1110 | err = usb_control_msg(dev: hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0), |
1111 | FIRMWARE_DOWNLOAD_COMP, |
1112 | requesttype: 0x40 | USB_DIR_OUT, |
1113 | value: firm_offset >> 8, index: 0, NULL, size: 0, USB_MSG_TIMEOUT); |
1114 | if (err) |
1115 | return -EIO; |
1116 | |
1117 | dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n" , |
1118 | hif_dev->fw_name, (unsigned long) hif_dev->fw_size); |
1119 | |
1120 | return 0; |
1121 | } |
1122 | |
1123 | static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev) |
1124 | { |
1125 | int ret; |
1126 | |
1127 | ret = ath9k_hif_usb_download_fw(hif_dev); |
1128 | if (ret) { |
1129 | dev_err(&hif_dev->udev->dev, |
1130 | "ath9k_htc: Firmware - %s download failed\n" , |
1131 | hif_dev->fw_name); |
1132 | return ret; |
1133 | } |
1134 | |
1135 | /* Alloc URBs */ |
1136 | ret = ath9k_hif_usb_alloc_urbs(hif_dev); |
1137 | if (ret) { |
1138 | dev_err(&hif_dev->udev->dev, |
1139 | "ath9k_htc: Unable to allocate URBs\n" ); |
1140 | return ret; |
1141 | } |
1142 | |
1143 | return 0; |
1144 | } |
1145 | |
1146 | static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev) |
1147 | { |
1148 | ath9k_hif_usb_dealloc_urbs(hif_dev); |
1149 | } |
1150 | |
1151 | /* |
1152 | * If initialization fails or the FW cannot be retrieved, |
1153 | * detach the device. |
1154 | */ |
1155 | static void ath9k_hif_usb_firmware_fail(struct hif_device_usb *hif_dev) |
1156 | { |
1157 | struct device *dev = &hif_dev->udev->dev; |
1158 | struct device *parent = dev->parent; |
1159 | |
1160 | complete_all(&hif_dev->fw_done); |
1161 | |
1162 | if (parent) |
1163 | device_lock(dev: parent); |
1164 | |
1165 | device_release_driver(dev); |
1166 | |
1167 | if (parent) |
1168 | device_unlock(dev: parent); |
1169 | } |
1170 | |
1171 | static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context); |
1172 | |
1173 | /* taken from iwlwifi */ |
1174 | static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev, |
1175 | bool first) |
1176 | { |
1177 | char index[8], *chip; |
1178 | int ret; |
1179 | |
1180 | if (first) { |
1181 | if (htc_use_dev_fw) { |
1182 | hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX + 1; |
1183 | sprintf(buf: index, fmt: "%s" , "dev" ); |
1184 | } else { |
1185 | hif_dev->fw_minor_index = FIRMWARE_MINOR_IDX_MAX; |
1186 | sprintf(buf: index, fmt: "%d" , hif_dev->fw_minor_index); |
1187 | } |
1188 | } else { |
1189 | hif_dev->fw_minor_index--; |
1190 | sprintf(buf: index, fmt: "%d" , hif_dev->fw_minor_index); |
1191 | } |
1192 | |
1193 | /* test for FW 1.3 */ |
1194 | if (MAJOR_VERSION_REQ == 1 && hif_dev->fw_minor_index == 3) { |
1195 | const char *filename; |
1196 | |
1197 | if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info)) |
1198 | filename = FIRMWARE_AR7010_1_1; |
1199 | else |
1200 | filename = FIRMWARE_AR9271; |
1201 | |
1202 | /* expected fw locations: |
1203 | * - htc_9271.fw (stable version 1.3, depricated) |
1204 | */ |
1205 | snprintf(buf: hif_dev->fw_name, size: sizeof(hif_dev->fw_name), |
1206 | fmt: "%s" , filename); |
1207 | |
1208 | } else if (hif_dev->fw_minor_index < FIRMWARE_MINOR_IDX_MIN) { |
1209 | dev_err(&hif_dev->udev->dev, "no suitable firmware found!\n" ); |
1210 | |
1211 | return -ENOENT; |
1212 | } else { |
1213 | if (IS_AR7010_DEVICE(hif_dev->usb_device_id->driver_info)) |
1214 | chip = "7010" ; |
1215 | else |
1216 | chip = "9271" ; |
1217 | |
1218 | /* expected fw locations: |
1219 | * - ath9k_htc/htc_9271-1.dev.0.fw (development version) |
1220 | * - ath9k_htc/htc_9271-1.4.0.fw (stable version) |
1221 | */ |
1222 | snprintf(buf: hif_dev->fw_name, size: sizeof(hif_dev->fw_name), |
1223 | fmt: "%s/htc_%s-%d.%s.0.fw" , HTC_FW_PATH, |
1224 | chip, MAJOR_VERSION_REQ, index); |
1225 | } |
1226 | |
1227 | ret = request_firmware_nowait(THIS_MODULE, uevent: true, name: hif_dev->fw_name, |
1228 | device: &hif_dev->udev->dev, GFP_KERNEL, |
1229 | context: hif_dev, cont: ath9k_hif_usb_firmware_cb); |
1230 | if (ret) { |
1231 | dev_err(&hif_dev->udev->dev, |
1232 | "ath9k_htc: Async request for firmware %s failed\n" , |
1233 | hif_dev->fw_name); |
1234 | return ret; |
1235 | } |
1236 | |
1237 | dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n" , |
1238 | hif_dev->fw_name); |
1239 | |
1240 | return ret; |
1241 | } |
1242 | |
1243 | static void ath9k_hif_usb_firmware_cb(const struct firmware *fw, void *context) |
1244 | { |
1245 | struct hif_device_usb *hif_dev = context; |
1246 | int ret; |
1247 | |
1248 | if (!fw) { |
1249 | ret = ath9k_hif_request_firmware(hif_dev, first: false); |
1250 | if (!ret) |
1251 | return; |
1252 | |
1253 | dev_err(&hif_dev->udev->dev, |
1254 | "ath9k_htc: Failed to get firmware %s\n" , |
1255 | hif_dev->fw_name); |
1256 | goto err_fw; |
1257 | } |
1258 | |
1259 | hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_handle: hif_dev, hif: &hif_usb, |
1260 | dev: &hif_dev->udev->dev); |
1261 | if (hif_dev->htc_handle == NULL) |
1262 | goto err_dev_alloc; |
1263 | |
1264 | hif_dev->fw_data = fw->data; |
1265 | hif_dev->fw_size = fw->size; |
1266 | |
1267 | /* Proceed with initialization */ |
1268 | |
1269 | ret = ath9k_hif_usb_dev_init(hif_dev); |
1270 | if (ret) |
1271 | goto err_dev_init; |
1272 | |
1273 | ret = ath9k_htc_hw_init(target: hif_dev->htc_handle, |
1274 | dev: &hif_dev->interface->dev, |
1275 | devid: hif_dev->usb_device_id->idProduct, |
1276 | product: hif_dev->udev->product, |
1277 | drv_info: hif_dev->usb_device_id->driver_info); |
1278 | if (ret) { |
1279 | ret = -EINVAL; |
1280 | goto err_htc_hw_init; |
1281 | } |
1282 | |
1283 | release_firmware(fw); |
1284 | hif_dev->flags |= HIF_USB_READY; |
1285 | complete_all(&hif_dev->fw_done); |
1286 | |
1287 | return; |
1288 | |
1289 | err_htc_hw_init: |
1290 | ath9k_hif_usb_dev_deinit(hif_dev); |
1291 | err_dev_init: |
1292 | ath9k_htc_hw_free(htc: hif_dev->htc_handle); |
1293 | err_dev_alloc: |
1294 | release_firmware(fw); |
1295 | err_fw: |
1296 | ath9k_hif_usb_firmware_fail(hif_dev); |
1297 | } |
1298 | |
1299 | /* |
1300 | * An exact copy of the function from zd1211rw. |
1301 | */ |
1302 | static int send_eject_command(struct usb_interface *interface) |
1303 | { |
1304 | struct usb_device *udev = interface_to_usbdev(interface); |
1305 | struct usb_host_interface *iface_desc = interface->cur_altsetting; |
1306 | struct usb_endpoint_descriptor *endpoint; |
1307 | unsigned char *cmd; |
1308 | u8 bulk_out_ep; |
1309 | int r; |
1310 | |
1311 | if (iface_desc->desc.bNumEndpoints < 2) |
1312 | return -ENODEV; |
1313 | |
1314 | /* Find bulk out endpoint */ |
1315 | for (r = 1; r >= 0; r--) { |
1316 | endpoint = &iface_desc->endpoint[r].desc; |
1317 | if (usb_endpoint_dir_out(epd: endpoint) && |
1318 | usb_endpoint_xfer_bulk(epd: endpoint)) { |
1319 | bulk_out_ep = endpoint->bEndpointAddress; |
1320 | break; |
1321 | } |
1322 | } |
1323 | if (r == -1) { |
1324 | dev_err(&udev->dev, |
1325 | "ath9k_htc: Could not find bulk out endpoint\n" ); |
1326 | return -ENODEV; |
1327 | } |
1328 | |
1329 | cmd = kzalloc(size: 31, GFP_KERNEL); |
1330 | if (cmd == NULL) |
1331 | return -ENODEV; |
1332 | |
1333 | /* USB bulk command block */ |
1334 | cmd[0] = 0x55; /* bulk command signature */ |
1335 | cmd[1] = 0x53; /* bulk command signature */ |
1336 | cmd[2] = 0x42; /* bulk command signature */ |
1337 | cmd[3] = 0x43; /* bulk command signature */ |
1338 | cmd[14] = 6; /* command length */ |
1339 | |
1340 | cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */ |
1341 | cmd[19] = 0x2; /* eject disc */ |
1342 | |
1343 | dev_info(&udev->dev, "Ejecting storage device...\n" ); |
1344 | r = usb_bulk_msg(usb_dev: udev, usb_sndbulkpipe(udev, bulk_out_ep), |
1345 | data: cmd, len: 31, NULL, timeout: 2 * USB_MSG_TIMEOUT); |
1346 | kfree(objp: cmd); |
1347 | if (r) |
1348 | return r; |
1349 | |
1350 | /* At this point, the device disconnects and reconnects with the real |
1351 | * ID numbers. */ |
1352 | |
1353 | usb_set_intfdata(intf: interface, NULL); |
1354 | return 0; |
1355 | } |
1356 | |
1357 | static int ath9k_hif_usb_probe(struct usb_interface *interface, |
1358 | const struct usb_device_id *id) |
1359 | { |
1360 | struct usb_endpoint_descriptor *bulk_in, *bulk_out, *int_in, *int_out; |
1361 | struct usb_device *udev = interface_to_usbdev(interface); |
1362 | struct usb_host_interface *alt; |
1363 | struct hif_device_usb *hif_dev; |
1364 | int ret = 0; |
1365 | |
1366 | /* Verify the expected endpoints are present */ |
1367 | alt = interface->cur_altsetting; |
1368 | if (usb_find_common_endpoints(alt, bulk_in: &bulk_in, bulk_out: &bulk_out, int_in: &int_in, int_out: &int_out) < 0 || |
1369 | usb_endpoint_num(epd: bulk_in) != USB_WLAN_RX_PIPE || |
1370 | usb_endpoint_num(epd: bulk_out) != USB_WLAN_TX_PIPE || |
1371 | usb_endpoint_num(epd: int_in) != USB_REG_IN_PIPE || |
1372 | usb_endpoint_num(epd: int_out) != USB_REG_OUT_PIPE) { |
1373 | dev_err(&udev->dev, |
1374 | "ath9k_htc: Device endpoint numbers are not the expected ones\n" ); |
1375 | return -ENODEV; |
1376 | } |
1377 | |
1378 | if (id->driver_info == STORAGE_DEVICE) |
1379 | return send_eject_command(interface); |
1380 | |
1381 | hif_dev = kzalloc(size: sizeof(struct hif_device_usb), GFP_KERNEL); |
1382 | if (!hif_dev) { |
1383 | ret = -ENOMEM; |
1384 | goto err_alloc; |
1385 | } |
1386 | |
1387 | usb_get_dev(dev: udev); |
1388 | |
1389 | hif_dev->udev = udev; |
1390 | hif_dev->interface = interface; |
1391 | hif_dev->usb_device_id = id; |
1392 | #ifdef CONFIG_PM |
1393 | udev->reset_resume = 1; |
1394 | #endif |
1395 | usb_set_intfdata(intf: interface, data: hif_dev); |
1396 | |
1397 | init_completion(x: &hif_dev->fw_done); |
1398 | |
1399 | ret = ath9k_hif_request_firmware(hif_dev, first: true); |
1400 | if (ret) |
1401 | goto err_fw_req; |
1402 | |
1403 | return ret; |
1404 | |
1405 | err_fw_req: |
1406 | usb_set_intfdata(intf: interface, NULL); |
1407 | kfree(objp: hif_dev); |
1408 | usb_put_dev(dev: udev); |
1409 | err_alloc: |
1410 | return ret; |
1411 | } |
1412 | |
1413 | static void ath9k_hif_usb_reboot(struct usb_device *udev) |
1414 | { |
1415 | u32 reboot_cmd = 0xffffffff; |
1416 | void *buf; |
1417 | int ret; |
1418 | |
1419 | buf = kmemdup(p: &reboot_cmd, size: 4, GFP_KERNEL); |
1420 | if (!buf) |
1421 | return; |
1422 | |
1423 | ret = usb_interrupt_msg(usb_dev: udev, usb_sndintpipe(udev, USB_REG_OUT_PIPE), |
1424 | data: buf, len: 4, NULL, USB_MSG_TIMEOUT); |
1425 | if (ret) |
1426 | dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n" ); |
1427 | |
1428 | kfree(objp: buf); |
1429 | } |
1430 | |
1431 | static void ath9k_hif_usb_disconnect(struct usb_interface *interface) |
1432 | { |
1433 | struct usb_device *udev = interface_to_usbdev(interface); |
1434 | struct hif_device_usb *hif_dev = usb_get_intfdata(intf: interface); |
1435 | bool unplugged = udev->state == USB_STATE_NOTATTACHED; |
1436 | |
1437 | if (!hif_dev) |
1438 | return; |
1439 | |
1440 | wait_for_completion(&hif_dev->fw_done); |
1441 | |
1442 | if (hif_dev->flags & HIF_USB_READY) { |
1443 | ath9k_htc_hw_deinit(target: hif_dev->htc_handle, hot_unplug: unplugged); |
1444 | ath9k_htc_hw_free(htc: hif_dev->htc_handle); |
1445 | } |
1446 | |
1447 | usb_set_intfdata(intf: interface, NULL); |
1448 | |
1449 | /* If firmware was loaded we should drop it |
1450 | * go back to first stage bootloader. */ |
1451 | if (!unplugged && (hif_dev->flags & HIF_USB_READY)) |
1452 | ath9k_hif_usb_reboot(udev); |
1453 | |
1454 | kfree(objp: hif_dev); |
1455 | dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n" ); |
1456 | usb_put_dev(dev: udev); |
1457 | } |
1458 | |
1459 | #ifdef CONFIG_PM |
1460 | static int ath9k_hif_usb_suspend(struct usb_interface *interface, |
1461 | pm_message_t message) |
1462 | { |
1463 | struct hif_device_usb *hif_dev = usb_get_intfdata(intf: interface); |
1464 | |
1465 | /* |
1466 | * The device has to be set to FULLSLEEP mode in case no |
1467 | * interface is up. |
1468 | */ |
1469 | if (!(hif_dev->flags & HIF_USB_START)) |
1470 | ath9k_htc_suspend(htc_handle: hif_dev->htc_handle); |
1471 | |
1472 | wait_for_completion(&hif_dev->fw_done); |
1473 | |
1474 | if (hif_dev->flags & HIF_USB_READY) |
1475 | ath9k_hif_usb_dealloc_urbs(hif_dev); |
1476 | |
1477 | return 0; |
1478 | } |
1479 | |
1480 | static int ath9k_hif_usb_resume(struct usb_interface *interface) |
1481 | { |
1482 | struct hif_device_usb *hif_dev = usb_get_intfdata(intf: interface); |
1483 | struct htc_target *htc_handle = hif_dev->htc_handle; |
1484 | const struct firmware *fw; |
1485 | int ret; |
1486 | |
1487 | ret = ath9k_hif_usb_alloc_urbs(hif_dev); |
1488 | if (ret) |
1489 | return ret; |
1490 | |
1491 | if (!(hif_dev->flags & HIF_USB_READY)) { |
1492 | ret = -EIO; |
1493 | goto fail_resume; |
1494 | } |
1495 | |
1496 | /* request cached firmware during suspend/resume cycle */ |
1497 | ret = request_firmware(fw: &fw, name: hif_dev->fw_name, |
1498 | device: &hif_dev->udev->dev); |
1499 | if (ret) |
1500 | goto fail_resume; |
1501 | |
1502 | hif_dev->fw_data = fw->data; |
1503 | hif_dev->fw_size = fw->size; |
1504 | ret = ath9k_hif_usb_download_fw(hif_dev); |
1505 | release_firmware(fw); |
1506 | if (ret) |
1507 | goto fail_resume; |
1508 | |
1509 | mdelay(100); |
1510 | |
1511 | ret = ath9k_htc_resume(htc_handle); |
1512 | |
1513 | if (ret) |
1514 | goto fail_resume; |
1515 | |
1516 | return 0; |
1517 | |
1518 | fail_resume: |
1519 | ath9k_hif_usb_dealloc_urbs(hif_dev); |
1520 | |
1521 | return ret; |
1522 | } |
1523 | #endif |
1524 | |
1525 | static struct usb_driver ath9k_hif_usb_driver = { |
1526 | .name = KBUILD_MODNAME, |
1527 | .probe = ath9k_hif_usb_probe, |
1528 | .disconnect = ath9k_hif_usb_disconnect, |
1529 | #ifdef CONFIG_PM |
1530 | .suspend = ath9k_hif_usb_suspend, |
1531 | .resume = ath9k_hif_usb_resume, |
1532 | .reset_resume = ath9k_hif_usb_resume, |
1533 | #endif |
1534 | .id_table = ath9k_hif_usb_ids, |
1535 | .soft_unbind = 1, |
1536 | .disable_hub_initiated_lpm = 1, |
1537 | }; |
1538 | |
1539 | int ath9k_hif_usb_init(void) |
1540 | { |
1541 | return usb_register(&ath9k_hif_usb_driver); |
1542 | } |
1543 | |
1544 | void ath9k_hif_usb_exit(void) |
1545 | { |
1546 | usb_deregister(&ath9k_hif_usb_driver); |
1547 | } |
1548 | |