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Commit | Line | Data |
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b63a2cb3 CL |
1 | /* |
2 | * Atheros AR9170 driver | |
3 | * | |
4 | * USB - frontend | |
5 | * | |
6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | |
7 | * Copyright 2009, Christian Lamparter <chunkeey@web.de> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; see the file COPYING. If not, see | |
21 | * http://www.gnu.org/licenses/. | |
22 | * | |
23 | * This file incorporates work covered by the following copyright and | |
24 | * permission notice: | |
25 | * Copyright (c) 2007-2008 Atheros Communications, Inc. | |
26 | * | |
27 | * Permission to use, copy, modify, and/or distribute this software for any | |
28 | * purpose with or without fee is hereby granted, provided that the above | |
29 | * copyright notice and this permission notice appear in all copies. | |
30 | * | |
31 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
32 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
33 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
34 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
35 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
36 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
37 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
38 | */ | |
39 | ||
40 | #include <linux/module.h> | |
5a0e3ad6 | 41 | #include <linux/slab.h> |
b63a2cb3 CL |
42 | #include <linux/usb.h> |
43 | #include <linux/firmware.h> | |
44 | #include <linux/etherdevice.h> | |
5a147e8b | 45 | #include <linux/device.h> |
b63a2cb3 CL |
46 | #include <net/mac80211.h> |
47 | #include "ar9170.h" | |
48 | #include "cmd.h" | |
49 | #include "hw.h" | |
50 | #include "usb.h" | |
51 | ||
de00c04e | 52 | MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); |
b63a2cb3 CL |
53 | MODULE_AUTHOR("Christian Lamparter <chunkeey@web.de>"); |
54 | MODULE_LICENSE("GPL"); | |
de00c04e | 55 | MODULE_DESCRIPTION("Atheros AR9170 802.11n USB wireless"); |
c768b58d | 56 | MODULE_FIRMWARE("ar9170.fw"); |
b63a2cb3 CL |
57 | MODULE_FIRMWARE("ar9170-1.fw"); |
58 | MODULE_FIRMWARE("ar9170-2.fw"); | |
59 | ||
bdf6d32f LR |
60 | enum ar9170_requirements { |
61 | AR9170_REQ_FW1_ONLY = 1, | |
62 | }; | |
63 | ||
b63a2cb3 CL |
64 | static struct usb_device_id ar9170_usb_ids[] = { |
65 | /* Atheros 9170 */ | |
66 | { USB_DEVICE(0x0cf3, 0x9170) }, | |
67 | /* Atheros TG121N */ | |
68 | { USB_DEVICE(0x0cf3, 0x1001) }, | |
fe9f6342 CL |
69 | /* TP-Link TL-WN821N v2 */ |
70 | { USB_DEVICE(0x0cf3, 0x1002) }, | |
94d0bbe8 CL |
71 | /* 3Com Dual Band 802.11n USB Adapter */ |
72 | { USB_DEVICE(0x0cf3, 0x1010) }, | |
73 | /* H3C Dual Band 802.11n USB Adapter */ | |
74 | { USB_DEVICE(0x0cf3, 0x1011) }, | |
4fc298b8 CL |
75 | /* Cace Airpcap NX */ |
76 | { USB_DEVICE(0xcace, 0x0300) }, | |
15295380 | 77 | /* D-Link DWA 160 A1 */ |
b63a2cb3 | 78 | { USB_DEVICE(0x07d1, 0x3c10) }, |
15295380 TK |
79 | /* D-Link DWA 160 A2 */ |
80 | { USB_DEVICE(0x07d1, 0x3a09) }, | |
94d0bbe8 CL |
81 | /* Netgear WNA1000 */ |
82 | { USB_DEVICE(0x0846, 0x9040) }, | |
b63a2cb3 CL |
83 | /* Netgear WNDA3100 */ |
84 | { USB_DEVICE(0x0846, 0x9010) }, | |
85 | /* Netgear WN111 v2 */ | |
86 | { USB_DEVICE(0x0846, 0x9001) }, | |
87 | /* Zydas ZD1221 */ | |
88 | { USB_DEVICE(0x0ace, 0x1221) }, | |
94d0bbe8 CL |
89 | /* Proxim ORiNOCO 802.11n USB */ |
90 | { USB_DEVICE(0x1435, 0x0804) }, | |
91 | /* WNC Generic 11n USB Dongle */ | |
92 | { USB_DEVICE(0x1435, 0x0326) }, | |
957b0516 CL |
93 | /* ZyXEL NWD271N */ |
94 | { USB_DEVICE(0x0586, 0x3417) }, | |
b63a2cb3 CL |
95 | /* Z-Com UB81 BG */ |
96 | { USB_DEVICE(0x0cde, 0x0023) }, | |
97 | /* Z-Com UB82 ABG */ | |
98 | { USB_DEVICE(0x0cde, 0x0026) }, | |
5b6e2f12 SS |
99 | /* Sphairon Homelink 1202 */ |
100 | { USB_DEVICE(0x0cde, 0x0027) }, | |
b63a2cb3 CL |
101 | /* Arcadyan WN7512 */ |
102 | { USB_DEVICE(0x083a, 0xf522) }, | |
103 | /* Planex GWUS300 */ | |
104 | { USB_DEVICE(0x2019, 0x5304) }, | |
105 | /* IO-Data WNGDNUS2 */ | |
106 | { USB_DEVICE(0x04bb, 0x093f) }, | |
bdf6d32f LR |
107 | /* AVM FRITZ!WLAN USB Stick N */ |
108 | { USB_DEVICE(0x057C, 0x8401) }, | |
eb3d72c8 BK |
109 | /* NEC WL300NU-G */ |
110 | { USB_DEVICE(0x0409, 0x0249) }, | |
bdf6d32f LR |
111 | /* AVM FRITZ!WLAN USB Stick N 2.4 */ |
112 | { USB_DEVICE(0x057C, 0x8402), .driver_info = AR9170_REQ_FW1_ONLY }, | |
b63a2cb3 CL |
113 | |
114 | /* terminate */ | |
115 | {} | |
116 | }; | |
117 | MODULE_DEVICE_TABLE(usb, ar9170_usb_ids); | |
118 | ||
9b9c5aae CL |
119 | static void ar9170_usb_submit_urb(struct ar9170_usb *aru) |
120 | { | |
121 | struct urb *urb; | |
122 | unsigned long flags; | |
123 | int err; | |
124 | ||
125 | if (unlikely(!IS_STARTED(&aru->common))) | |
126 | return ; | |
127 | ||
128 | spin_lock_irqsave(&aru->tx_urb_lock, flags); | |
731d6bfc | 129 | if (atomic_read(&aru->tx_submitted_urbs) >= AR9170_NUM_TX_URBS) { |
9b9c5aae CL |
130 | spin_unlock_irqrestore(&aru->tx_urb_lock, flags); |
131 | return ; | |
132 | } | |
731d6bfc | 133 | atomic_inc(&aru->tx_submitted_urbs); |
9b9c5aae CL |
134 | |
135 | urb = usb_get_from_anchor(&aru->tx_pending); | |
136 | if (!urb) { | |
731d6bfc | 137 | atomic_dec(&aru->tx_submitted_urbs); |
9b9c5aae CL |
138 | spin_unlock_irqrestore(&aru->tx_urb_lock, flags); |
139 | ||
140 | return ; | |
141 | } | |
142 | spin_unlock_irqrestore(&aru->tx_urb_lock, flags); | |
143 | ||
144 | aru->tx_pending_urbs--; | |
145 | usb_anchor_urb(urb, &aru->tx_submitted); | |
146 | ||
147 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
148 | if (unlikely(err)) { | |
149 | if (ar9170_nag_limiter(&aru->common)) | |
150 | dev_err(&aru->udev->dev, "submit_urb failed (%d).\n", | |
151 | err); | |
152 | ||
153 | usb_unanchor_urb(urb); | |
731d6bfc | 154 | atomic_dec(&aru->tx_submitted_urbs); |
9b9c5aae CL |
155 | ar9170_tx_callback(&aru->common, urb->context); |
156 | } | |
157 | ||
158 | usb_free_urb(urb); | |
159 | } | |
160 | ||
161 | static void ar9170_usb_tx_urb_complete_frame(struct urb *urb) | |
b63a2cb3 CL |
162 | { |
163 | struct sk_buff *skb = urb->context; | |
164 | struct ar9170_usb *aru = (struct ar9170_usb *) | |
165 | usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); | |
166 | ||
66d00813 | 167 | if (unlikely(!aru)) { |
b63a2cb3 CL |
168 | dev_kfree_skb_irq(skb); |
169 | return ; | |
170 | } | |
171 | ||
731d6bfc | 172 | atomic_dec(&aru->tx_submitted_urbs); |
9b9c5aae CL |
173 | |
174 | ar9170_tx_callback(&aru->common, skb); | |
175 | ||
176 | ar9170_usb_submit_urb(aru); | |
b63a2cb3 CL |
177 | } |
178 | ||
179 | static void ar9170_usb_tx_urb_complete(struct urb *urb) | |
180 | { | |
181 | } | |
182 | ||
183 | static void ar9170_usb_irq_completed(struct urb *urb) | |
184 | { | |
185 | struct ar9170_usb *aru = urb->context; | |
186 | ||
187 | switch (urb->status) { | |
188 | /* everything is fine */ | |
189 | case 0: | |
190 | break; | |
191 | ||
192 | /* disconnect */ | |
193 | case -ENOENT: | |
194 | case -ECONNRESET: | |
195 | case -ENODEV: | |
196 | case -ESHUTDOWN: | |
197 | goto free; | |
198 | ||
199 | default: | |
200 | goto resubmit; | |
201 | } | |
202 | ||
66d00813 CL |
203 | ar9170_handle_command_response(&aru->common, urb->transfer_buffer, |
204 | urb->actual_length); | |
b63a2cb3 CL |
205 | |
206 | resubmit: | |
207 | usb_anchor_urb(urb, &aru->rx_submitted); | |
208 | if (usb_submit_urb(urb, GFP_ATOMIC)) { | |
209 | usb_unanchor_urb(urb); | |
210 | goto free; | |
211 | } | |
212 | ||
213 | return; | |
214 | ||
215 | free: | |
216 | usb_buffer_free(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma); | |
217 | } | |
218 | ||
219 | static void ar9170_usb_rx_completed(struct urb *urb) | |
220 | { | |
221 | struct sk_buff *skb = urb->context; | |
222 | struct ar9170_usb *aru = (struct ar9170_usb *) | |
223 | usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); | |
224 | int err; | |
225 | ||
226 | if (!aru) | |
227 | goto free; | |
228 | ||
229 | switch (urb->status) { | |
230 | /* everything is fine */ | |
231 | case 0: | |
232 | break; | |
233 | ||
234 | /* disconnect */ | |
235 | case -ENOENT: | |
236 | case -ECONNRESET: | |
237 | case -ENODEV: | |
238 | case -ESHUTDOWN: | |
239 | goto free; | |
240 | ||
241 | default: | |
242 | goto resubmit; | |
243 | } | |
244 | ||
245 | skb_put(skb, urb->actual_length); | |
246 | ar9170_rx(&aru->common, skb); | |
247 | ||
248 | resubmit: | |
249 | skb_reset_tail_pointer(skb); | |
250 | skb_trim(skb, 0); | |
251 | ||
252 | usb_anchor_urb(urb, &aru->rx_submitted); | |
253 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
66d00813 | 254 | if (unlikely(err)) { |
b63a2cb3 | 255 | usb_unanchor_urb(urb); |
66d00813 | 256 | goto free; |
b63a2cb3 CL |
257 | } |
258 | ||
259 | return ; | |
260 | ||
261 | free: | |
262 | dev_kfree_skb_irq(skb); | |
b63a2cb3 CL |
263 | } |
264 | ||
265 | static int ar9170_usb_prep_rx_urb(struct ar9170_usb *aru, | |
266 | struct urb *urb, gfp_t gfp) | |
267 | { | |
268 | struct sk_buff *skb; | |
269 | ||
270 | skb = __dev_alloc_skb(AR9170_MAX_RX_BUFFER_SIZE + 32, gfp); | |
271 | if (!skb) | |
272 | return -ENOMEM; | |
273 | ||
274 | /* reserve some space for mac80211's radiotap */ | |
275 | skb_reserve(skb, 32); | |
276 | ||
277 | usb_fill_bulk_urb(urb, aru->udev, | |
278 | usb_rcvbulkpipe(aru->udev, AR9170_EP_RX), | |
279 | skb->data, min(skb_tailroom(skb), | |
280 | AR9170_MAX_RX_BUFFER_SIZE), | |
281 | ar9170_usb_rx_completed, skb); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru) | |
287 | { | |
288 | struct urb *urb = NULL; | |
289 | void *ibuf; | |
290 | int err = -ENOMEM; | |
291 | ||
292 | /* initialize interrupt endpoint */ | |
293 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
294 | if (!urb) | |
295 | goto out; | |
296 | ||
297 | ibuf = usb_buffer_alloc(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma); | |
298 | if (!ibuf) | |
299 | goto out; | |
300 | ||
301 | usb_fill_int_urb(urb, aru->udev, | |
302 | usb_rcvintpipe(aru->udev, AR9170_EP_IRQ), ibuf, | |
303 | 64, ar9170_usb_irq_completed, aru, 1); | |
304 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
305 | ||
306 | usb_anchor_urb(urb, &aru->rx_submitted); | |
307 | err = usb_submit_urb(urb, GFP_KERNEL); | |
308 | if (err) { | |
309 | usb_unanchor_urb(urb); | |
310 | usb_buffer_free(aru->udev, 64, urb->transfer_buffer, | |
311 | urb->transfer_dma); | |
312 | } | |
313 | ||
314 | out: | |
315 | usb_free_urb(urb); | |
316 | return err; | |
317 | } | |
318 | ||
319 | static int ar9170_usb_alloc_rx_bulk_urbs(struct ar9170_usb *aru) | |
320 | { | |
321 | struct urb *urb; | |
322 | int i; | |
323 | int err = -EINVAL; | |
324 | ||
325 | for (i = 0; i < AR9170_NUM_RX_URBS; i++) { | |
326 | err = -ENOMEM; | |
327 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
328 | if (!urb) | |
329 | goto err_out; | |
330 | ||
331 | err = ar9170_usb_prep_rx_urb(aru, urb, GFP_KERNEL); | |
332 | if (err) { | |
333 | usb_free_urb(urb); | |
334 | goto err_out; | |
335 | } | |
336 | ||
337 | usb_anchor_urb(urb, &aru->rx_submitted); | |
338 | err = usb_submit_urb(urb, GFP_KERNEL); | |
339 | if (err) { | |
340 | usb_unanchor_urb(urb); | |
341 | dev_kfree_skb_any((void *) urb->transfer_buffer); | |
342 | usb_free_urb(urb); | |
343 | goto err_out; | |
344 | } | |
345 | usb_free_urb(urb); | |
346 | } | |
347 | ||
348 | /* the device now waiting for a firmware. */ | |
349 | aru->common.state = AR9170_IDLE; | |
350 | return 0; | |
351 | ||
352 | err_out: | |
353 | ||
354 | usb_kill_anchored_urbs(&aru->rx_submitted); | |
355 | return err; | |
356 | } | |
357 | ||
9b9c5aae | 358 | static int ar9170_usb_flush(struct ar9170 *ar) |
b63a2cb3 | 359 | { |
9b9c5aae CL |
360 | struct ar9170_usb *aru = (void *) ar; |
361 | struct urb *urb; | |
362 | int ret, err = 0; | |
b63a2cb3 | 363 | |
9b9c5aae CL |
364 | if (IS_STARTED(ar)) |
365 | aru->common.state = AR9170_IDLE; | |
b63a2cb3 | 366 | |
9b9c5aae CL |
367 | usb_wait_anchor_empty_timeout(&aru->tx_pending, |
368 | msecs_to_jiffies(800)); | |
369 | while ((urb = usb_get_from_anchor(&aru->tx_pending))) { | |
370 | ar9170_tx_callback(&aru->common, (void *) urb->context); | |
371 | usb_free_urb(urb); | |
372 | } | |
b63a2cb3 | 373 | |
9b9c5aae | 374 | /* lets wait a while until the tx - queues are dried out */ |
b63a2cb3 CL |
375 | ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted, |
376 | msecs_to_jiffies(100)); | |
377 | if (ret == 0) | |
9b9c5aae CL |
378 | err = -ETIMEDOUT; |
379 | ||
380 | usb_kill_anchored_urbs(&aru->tx_submitted); | |
381 | ||
382 | if (IS_ACCEPTING_CMD(ar)) | |
383 | aru->common.state = AR9170_STARTED; | |
384 | ||
385 | return err; | |
386 | } | |
387 | ||
388 | static void ar9170_usb_cancel_urbs(struct ar9170_usb *aru) | |
389 | { | |
390 | int err; | |
b63a2cb3 | 391 | |
9b9c5aae CL |
392 | aru->common.state = AR9170_UNKNOWN_STATE; |
393 | ||
394 | err = ar9170_usb_flush(&aru->common); | |
395 | if (err) | |
396 | dev_err(&aru->udev->dev, "stuck tx urbs!\n"); | |
397 | ||
398 | usb_poison_anchored_urbs(&aru->tx_submitted); | |
b63a2cb3 CL |
399 | usb_poison_anchored_urbs(&aru->rx_submitted); |
400 | } | |
401 | ||
402 | static int ar9170_usb_exec_cmd(struct ar9170 *ar, enum ar9170_cmd cmd, | |
403 | unsigned int plen, void *payload, | |
404 | unsigned int outlen, void *out) | |
405 | { | |
406 | struct ar9170_usb *aru = (void *) ar; | |
407 | struct urb *urb = NULL; | |
408 | unsigned long flags; | |
409 | int err = -ENOMEM; | |
410 | ||
411 | if (unlikely(!IS_ACCEPTING_CMD(ar))) | |
412 | return -EPERM; | |
413 | ||
414 | if (WARN_ON(plen > AR9170_MAX_CMD_LEN - 4)) | |
415 | return -EINVAL; | |
416 | ||
417 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
418 | if (unlikely(!urb)) | |
419 | goto err_free; | |
420 | ||
421 | ar->cmdbuf[0] = cpu_to_le32(plen); | |
422 | ar->cmdbuf[0] |= cpu_to_le32(cmd << 8); | |
423 | /* writing multiple regs fills this buffer already */ | |
424 | if (plen && payload != (u8 *)(&ar->cmdbuf[1])) | |
425 | memcpy(&ar->cmdbuf[1], payload, plen); | |
426 | ||
427 | spin_lock_irqsave(&aru->common.cmdlock, flags); | |
428 | aru->readbuf = (u8 *)out; | |
429 | aru->readlen = outlen; | |
430 | spin_unlock_irqrestore(&aru->common.cmdlock, flags); | |
431 | ||
432 | usb_fill_int_urb(urb, aru->udev, | |
2d20c72c | 433 | usb_sndintpipe(aru->udev, AR9170_EP_CMD), |
b63a2cb3 CL |
434 | aru->common.cmdbuf, plen + 4, |
435 | ar9170_usb_tx_urb_complete, NULL, 1); | |
436 | ||
437 | usb_anchor_urb(urb, &aru->tx_submitted); | |
438 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
66d00813 | 439 | if (unlikely(err)) { |
b63a2cb3 CL |
440 | usb_unanchor_urb(urb); |
441 | usb_free_urb(urb); | |
442 | goto err_unbuf; | |
443 | } | |
444 | usb_free_urb(urb); | |
445 | ||
446 | err = wait_for_completion_timeout(&aru->cmd_wait, HZ); | |
447 | if (err == 0) { | |
448 | err = -ETIMEDOUT; | |
449 | goto err_unbuf; | |
450 | } | |
451 | ||
ba5101d0 | 452 | if (aru->readlen != outlen) { |
b63a2cb3 CL |
453 | err = -EMSGSIZE; |
454 | goto err_unbuf; | |
455 | } | |
456 | ||
457 | return 0; | |
458 | ||
459 | err_unbuf: | |
460 | /* Maybe the device was removed in the second we were waiting? */ | |
461 | if (IS_STARTED(ar)) { | |
462 | dev_err(&aru->udev->dev, "no command feedback " | |
463 | "received (%d).\n", err); | |
464 | ||
465 | /* provide some maybe useful debug information */ | |
466 | print_hex_dump_bytes("ar9170 cmd: ", DUMP_PREFIX_NONE, | |
467 | aru->common.cmdbuf, plen + 4); | |
468 | dump_stack(); | |
469 | } | |
470 | ||
471 | /* invalidate to avoid completing the next prematurely */ | |
472 | spin_lock_irqsave(&aru->common.cmdlock, flags); | |
473 | aru->readbuf = NULL; | |
474 | aru->readlen = 0; | |
475 | spin_unlock_irqrestore(&aru->common.cmdlock, flags); | |
476 | ||
477 | err_free: | |
478 | ||
479 | return err; | |
480 | } | |
481 | ||
9b9c5aae | 482 | static int ar9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb) |
b63a2cb3 CL |
483 | { |
484 | struct ar9170_usb *aru = (struct ar9170_usb *) ar; | |
485 | struct urb *urb; | |
b63a2cb3 CL |
486 | |
487 | if (unlikely(!IS_STARTED(ar))) { | |
488 | /* Seriously, what were you drink... err... thinking!? */ | |
489 | return -EPERM; | |
490 | } | |
491 | ||
492 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
493 | if (unlikely(!urb)) | |
494 | return -ENOMEM; | |
495 | ||
496 | usb_fill_bulk_urb(urb, aru->udev, | |
497 | usb_sndbulkpipe(aru->udev, AR9170_EP_TX), | |
9b9c5aae CL |
498 | skb->data, skb->len, |
499 | ar9170_usb_tx_urb_complete_frame, skb); | |
b63a2cb3 CL |
500 | urb->transfer_flags |= URB_ZERO_PACKET; |
501 | ||
9b9c5aae CL |
502 | usb_anchor_urb(urb, &aru->tx_pending); |
503 | aru->tx_pending_urbs++; | |
b63a2cb3 CL |
504 | |
505 | usb_free_urb(urb); | |
9b9c5aae CL |
506 | |
507 | ar9170_usb_submit_urb(aru); | |
508 | return 0; | |
b63a2cb3 CL |
509 | } |
510 | ||
511 | static void ar9170_usb_callback_cmd(struct ar9170 *ar, u32 len , void *buffer) | |
512 | { | |
513 | struct ar9170_usb *aru = (void *) ar; | |
514 | unsigned long flags; | |
515 | u32 in, out; | |
516 | ||
66d00813 | 517 | if (unlikely(!buffer)) |
b63a2cb3 CL |
518 | return ; |
519 | ||
520 | in = le32_to_cpup((__le32 *)buffer); | |
521 | out = le32_to_cpu(ar->cmdbuf[0]); | |
522 | ||
523 | /* mask off length byte */ | |
524 | out &= ~0xFF; | |
525 | ||
526 | if (aru->readlen >= 0) { | |
527 | /* add expected length */ | |
528 | out |= aru->readlen; | |
529 | } else { | |
530 | /* add obtained length */ | |
531 | out |= in & 0xFF; | |
532 | } | |
533 | ||
534 | /* | |
535 | * Some commands (e.g: AR9170_CMD_FREQUENCY) have a variable response | |
536 | * length and we cannot predict the correct length in advance. | |
537 | * So we only check if we provided enough space for the data. | |
538 | */ | |
539 | if (unlikely(out < in)) { | |
540 | dev_warn(&aru->udev->dev, "received invalid command response " | |
541 | "got %d bytes, instead of %d bytes " | |
542 | "and the resp length is %d bytes\n", | |
543 | in, out, len); | |
544 | print_hex_dump_bytes("ar9170 invalid resp: ", | |
545 | DUMP_PREFIX_OFFSET, buffer, len); | |
546 | /* | |
547 | * Do not complete, then the command times out, | |
548 | * and we get a stack trace from there. | |
549 | */ | |
550 | return ; | |
551 | } | |
552 | ||
553 | spin_lock_irqsave(&aru->common.cmdlock, flags); | |
554 | if (aru->readbuf && len > 0) { | |
555 | memcpy(aru->readbuf, buffer + 4, len - 4); | |
556 | aru->readbuf = NULL; | |
557 | } | |
558 | complete(&aru->cmd_wait); | |
559 | spin_unlock_irqrestore(&aru->common.cmdlock, flags); | |
560 | } | |
561 | ||
562 | static int ar9170_usb_upload(struct ar9170_usb *aru, const void *data, | |
563 | size_t len, u32 addr, bool complete) | |
564 | { | |
565 | int transfer, err; | |
566 | u8 *buf = kmalloc(4096, GFP_KERNEL); | |
567 | ||
568 | if (!buf) | |
569 | return -ENOMEM; | |
570 | ||
571 | while (len) { | |
572 | transfer = min_t(int, len, 4096); | |
573 | memcpy(buf, data, transfer); | |
574 | ||
575 | err = usb_control_msg(aru->udev, usb_sndctrlpipe(aru->udev, 0), | |
576 | 0x30 /* FW DL */, 0x40 | USB_DIR_OUT, | |
577 | addr >> 8, 0, buf, transfer, 1000); | |
578 | ||
579 | if (err < 0) { | |
580 | kfree(buf); | |
581 | return err; | |
582 | } | |
583 | ||
584 | len -= transfer; | |
585 | data += transfer; | |
586 | addr += transfer; | |
587 | } | |
588 | kfree(buf); | |
589 | ||
590 | if (complete) { | |
591 | err = usb_control_msg(aru->udev, usb_sndctrlpipe(aru->udev, 0), | |
592 | 0x31 /* FW DL COMPLETE */, | |
593 | 0x40 | USB_DIR_OUT, 0, 0, NULL, 0, 5000); | |
594 | } | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
b63a2cb3 CL |
599 | static int ar9170_usb_reset(struct ar9170_usb *aru) |
600 | { | |
601 | int ret, lock = (aru->intf->condition != USB_INTERFACE_BINDING); | |
602 | ||
603 | if (lock) { | |
604 | ret = usb_lock_device_for_reset(aru->udev, aru->intf); | |
605 | if (ret < 0) { | |
606 | dev_err(&aru->udev->dev, "unable to lock device " | |
607 | "for reset (%d).\n", ret); | |
608 | return ret; | |
609 | } | |
610 | } | |
611 | ||
612 | ret = usb_reset_device(aru->udev); | |
613 | if (lock) | |
614 | usb_unlock_device(aru->udev); | |
615 | ||
616 | /* let it rest - for a second - */ | |
617 | msleep(1000); | |
618 | ||
619 | return ret; | |
620 | } | |
621 | ||
622 | static int ar9170_usb_upload_firmware(struct ar9170_usb *aru) | |
623 | { | |
624 | int err; | |
625 | ||
c768b58d LR |
626 | if (!aru->init_values) |
627 | goto upload_fw_start; | |
628 | ||
b63a2cb3 CL |
629 | /* First, upload initial values to device RAM */ |
630 | err = ar9170_usb_upload(aru, aru->init_values->data, | |
631 | aru->init_values->size, 0x102800, false); | |
632 | if (err) { | |
633 | dev_err(&aru->udev->dev, "firmware part 1 " | |
634 | "upload failed (%d).\n", err); | |
635 | return err; | |
636 | } | |
637 | ||
c768b58d LR |
638 | upload_fw_start: |
639 | ||
b63a2cb3 CL |
640 | /* Then, upload the firmware itself and start it */ |
641 | return ar9170_usb_upload(aru, aru->firmware->data, aru->firmware->size, | |
642 | 0x200000, true); | |
643 | } | |
644 | ||
645 | static int ar9170_usb_init_transport(struct ar9170_usb *aru) | |
646 | { | |
647 | struct ar9170 *ar = (void *) &aru->common; | |
648 | int err; | |
649 | ||
650 | ar9170_regwrite_begin(ar); | |
651 | ||
652 | /* Set USB Rx stream mode MAX packet number to 2 */ | |
653 | ar9170_regwrite(AR9170_USB_REG_MAX_AGG_UPLOAD, 0x4); | |
654 | ||
655 | /* Set USB Rx stream mode timeout to 10us */ | |
656 | ar9170_regwrite(AR9170_USB_REG_UPLOAD_TIME_CTL, 0x80); | |
657 | ||
658 | ar9170_regwrite_finish(); | |
659 | ||
660 | err = ar9170_regwrite_result(); | |
661 | if (err) | |
662 | dev_err(&aru->udev->dev, "USB setup failed (%d).\n", err); | |
663 | ||
664 | return err; | |
665 | } | |
666 | ||
667 | static void ar9170_usb_stop(struct ar9170 *ar) | |
668 | { | |
669 | struct ar9170_usb *aru = (void *) ar; | |
670 | int ret; | |
671 | ||
672 | if (IS_ACCEPTING_CMD(ar)) | |
673 | aru->common.state = AR9170_STOPPED; | |
674 | ||
9b9c5aae CL |
675 | ret = ar9170_usb_flush(ar); |
676 | if (ret) | |
b63a2cb3 CL |
677 | dev_err(&aru->udev->dev, "kill pending tx urbs.\n"); |
678 | ||
679 | usb_poison_anchored_urbs(&aru->tx_submitted); | |
680 | ||
681 | /* | |
682 | * Note: | |
683 | * So far we freed all tx urbs, but we won't dare to touch any rx urbs. | |
684 | * Else we would end up with a unresponsive device... | |
685 | */ | |
686 | } | |
687 | ||
688 | static int ar9170_usb_open(struct ar9170 *ar) | |
689 | { | |
690 | struct ar9170_usb *aru = (void *) ar; | |
691 | int err; | |
692 | ||
693 | usb_unpoison_anchored_urbs(&aru->tx_submitted); | |
694 | err = ar9170_usb_init_transport(aru); | |
695 | if (err) { | |
696 | usb_poison_anchored_urbs(&aru->tx_submitted); | |
697 | return err; | |
698 | } | |
699 | ||
700 | aru->common.state = AR9170_IDLE; | |
701 | return 0; | |
702 | } | |
703 | ||
e10a9dfc CL |
704 | static int ar9170_usb_init_device(struct ar9170_usb *aru) |
705 | { | |
706 | int err; | |
707 | ||
708 | err = ar9170_usb_alloc_rx_irq_urb(aru); | |
709 | if (err) | |
710 | goto err_out; | |
711 | ||
712 | err = ar9170_usb_alloc_rx_bulk_urbs(aru); | |
713 | if (err) | |
714 | goto err_unrx; | |
715 | ||
716 | err = ar9170_usb_upload_firmware(aru); | |
717 | if (err) { | |
718 | err = ar9170_echo_test(&aru->common, 0x60d43110); | |
719 | if (err) { | |
720 | /* force user invention, by disabling the device */ | |
721 | err = usb_driver_set_configuration(aru->udev, -1); | |
722 | dev_err(&aru->udev->dev, "device is in a bad state. " | |
723 | "please reconnect it!\n"); | |
724 | goto err_unrx; | |
725 | } | |
726 | } | |
727 | ||
728 | return 0; | |
729 | ||
730 | err_unrx: | |
731 | ar9170_usb_cancel_urbs(aru); | |
732 | ||
733 | err_out: | |
734 | return err; | |
735 | } | |
736 | ||
53576517 JB |
737 | static void ar9170_usb_firmware_failed(struct ar9170_usb *aru) |
738 | { | |
739 | struct device *parent = aru->udev->dev.parent; | |
740 | ||
741 | /* unbind anything failed */ | |
742 | if (parent) | |
5a147e8b | 743 | device_lock(parent); |
53576517 JB |
744 | device_release_driver(&aru->udev->dev); |
745 | if (parent) | |
5a147e8b | 746 | device_unlock(parent); |
53576517 JB |
747 | } |
748 | ||
749 | static void ar9170_usb_firmware_finish(const struct firmware *fw, void *context) | |
750 | { | |
751 | struct ar9170_usb *aru = context; | |
752 | int err; | |
753 | ||
754 | aru->firmware = fw; | |
755 | ||
756 | if (!fw) { | |
757 | dev_err(&aru->udev->dev, "firmware file not found.\n"); | |
758 | goto err_freefw; | |
759 | } | |
760 | ||
761 | err = ar9170_usb_init_device(aru); | |
762 | if (err) | |
763 | goto err_freefw; | |
764 | ||
765 | err = ar9170_usb_open(&aru->common); | |
766 | if (err) | |
767 | goto err_unrx; | |
768 | ||
769 | err = ar9170_register(&aru->common, &aru->udev->dev); | |
770 | ||
771 | ar9170_usb_stop(&aru->common); | |
772 | if (err) | |
773 | goto err_unrx; | |
774 | ||
775 | return; | |
776 | ||
777 | err_unrx: | |
778 | ar9170_usb_cancel_urbs(aru); | |
779 | ||
780 | err_freefw: | |
781 | ar9170_usb_firmware_failed(aru); | |
782 | } | |
783 | ||
784 | static void ar9170_usb_firmware_inits(const struct firmware *fw, | |
785 | void *context) | |
786 | { | |
787 | struct ar9170_usb *aru = context; | |
788 | int err; | |
789 | ||
790 | if (!fw) { | |
791 | dev_err(&aru->udev->dev, "file with init values not found.\n"); | |
792 | ar9170_usb_firmware_failed(aru); | |
793 | return; | |
794 | } | |
795 | ||
796 | aru->init_values = fw; | |
797 | ||
798 | /* ok so we have the init values -- get code for two-stage */ | |
799 | ||
800 | err = request_firmware_nowait(THIS_MODULE, 1, "ar9170-2.fw", | |
801 | &aru->udev->dev, GFP_KERNEL, aru, | |
802 | ar9170_usb_firmware_finish); | |
803 | if (err) | |
804 | ar9170_usb_firmware_failed(aru); | |
805 | } | |
806 | ||
807 | static void ar9170_usb_firmware_step2(const struct firmware *fw, void *context) | |
808 | { | |
809 | struct ar9170_usb *aru = context; | |
810 | int err; | |
811 | ||
812 | if (fw) { | |
813 | ar9170_usb_firmware_finish(fw, context); | |
814 | return; | |
815 | } | |
816 | ||
817 | if (aru->req_one_stage_fw) { | |
818 | dev_err(&aru->udev->dev, "ar9170.fw firmware file " | |
819 | "not found and is required for this device\n"); | |
820 | ar9170_usb_firmware_failed(aru); | |
821 | return; | |
822 | } | |
823 | ||
824 | dev_err(&aru->udev->dev, "ar9170.fw firmware file " | |
825 | "not found, trying old firmware...\n"); | |
826 | ||
827 | err = request_firmware_nowait(THIS_MODULE, 1, "ar9170-1.fw", | |
828 | &aru->udev->dev, GFP_KERNEL, aru, | |
829 | ar9170_usb_firmware_inits); | |
830 | if (err) | |
831 | ar9170_usb_firmware_failed(aru); | |
832 | } | |
833 | ||
bdf6d32f LR |
834 | static bool ar9170_requires_one_stage(const struct usb_device_id *id) |
835 | { | |
836 | if (!id->driver_info) | |
837 | return false; | |
838 | if (id->driver_info == AR9170_REQ_FW1_ONLY) | |
839 | return true; | |
840 | return false; | |
841 | } | |
842 | ||
b63a2cb3 CL |
843 | static int ar9170_usb_probe(struct usb_interface *intf, |
844 | const struct usb_device_id *id) | |
845 | { | |
846 | struct ar9170_usb *aru; | |
847 | struct ar9170 *ar; | |
848 | struct usb_device *udev; | |
849 | int err; | |
850 | ||
851 | aru = ar9170_alloc(sizeof(*aru)); | |
852 | if (IS_ERR(aru)) { | |
853 | err = PTR_ERR(aru); | |
854 | goto out; | |
855 | } | |
856 | ||
857 | udev = interface_to_usbdev(intf); | |
858 | usb_get_dev(udev); | |
859 | aru->udev = udev; | |
860 | aru->intf = intf; | |
861 | ar = &aru->common; | |
862 | ||
bdf6d32f LR |
863 | aru->req_one_stage_fw = ar9170_requires_one_stage(id); |
864 | ||
b63a2cb3 | 865 | usb_set_intfdata(intf, aru); |
92179986 | 866 | SET_IEEE80211_DEV(ar->hw, &intf->dev); |
b63a2cb3 CL |
867 | |
868 | init_usb_anchor(&aru->rx_submitted); | |
9b9c5aae | 869 | init_usb_anchor(&aru->tx_pending); |
b63a2cb3 CL |
870 | init_usb_anchor(&aru->tx_submitted); |
871 | init_completion(&aru->cmd_wait); | |
9b9c5aae CL |
872 | spin_lock_init(&aru->tx_urb_lock); |
873 | ||
874 | aru->tx_pending_urbs = 0; | |
731d6bfc | 875 | atomic_set(&aru->tx_submitted_urbs, 0); |
b63a2cb3 CL |
876 | |
877 | aru->common.stop = ar9170_usb_stop; | |
9b9c5aae | 878 | aru->common.flush = ar9170_usb_flush; |
b63a2cb3 CL |
879 | aru->common.open = ar9170_usb_open; |
880 | aru->common.tx = ar9170_usb_tx; | |
881 | aru->common.exec_cmd = ar9170_usb_exec_cmd; | |
882 | aru->common.callback_cmd = ar9170_usb_callback_cmd; | |
883 | ||
8a713040 | 884 | #ifdef CONFIG_PM |
90ccda9b | 885 | udev->reset_resume = 1; |
66d00813 | 886 | #endif /* CONFIG_PM */ |
b63a2cb3 CL |
887 | err = ar9170_usb_reset(aru); |
888 | if (err) | |
e10a9dfc | 889 | goto err_freehw; |
b63a2cb3 | 890 | |
53576517 JB |
891 | return request_firmware_nowait(THIS_MODULE, 1, "ar9170.fw", |
892 | &aru->udev->dev, GFP_KERNEL, aru, | |
893 | ar9170_usb_firmware_step2); | |
e10a9dfc | 894 | err_freehw: |
b63a2cb3 CL |
895 | usb_set_intfdata(intf, NULL); |
896 | usb_put_dev(udev); | |
897 | ieee80211_free_hw(ar->hw); | |
898 | out: | |
899 | return err; | |
900 | } | |
901 | ||
902 | static void ar9170_usb_disconnect(struct usb_interface *intf) | |
903 | { | |
904 | struct ar9170_usb *aru = usb_get_intfdata(intf); | |
905 | ||
906 | if (!aru) | |
907 | return; | |
908 | ||
909 | aru->common.state = AR9170_IDLE; | |
910 | ar9170_unregister(&aru->common); | |
911 | ar9170_usb_cancel_urbs(aru); | |
912 | ||
b63a2cb3 CL |
913 | usb_put_dev(aru->udev); |
914 | usb_set_intfdata(intf, NULL); | |
915 | ieee80211_free_hw(aru->common.hw); | |
53576517 JB |
916 | |
917 | release_firmware(aru->init_values); | |
918 | release_firmware(aru->firmware); | |
b63a2cb3 CL |
919 | } |
920 | ||
e10a9dfc CL |
921 | #ifdef CONFIG_PM |
922 | static int ar9170_suspend(struct usb_interface *intf, | |
923 | pm_message_t message) | |
924 | { | |
925 | struct ar9170_usb *aru = usb_get_intfdata(intf); | |
926 | ||
927 | if (!aru) | |
928 | return -ENODEV; | |
929 | ||
930 | aru->common.state = AR9170_IDLE; | |
931 | ar9170_usb_cancel_urbs(aru); | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | static int ar9170_resume(struct usb_interface *intf) | |
937 | { | |
938 | struct ar9170_usb *aru = usb_get_intfdata(intf); | |
939 | int err; | |
940 | ||
941 | if (!aru) | |
942 | return -ENODEV; | |
943 | ||
944 | usb_unpoison_anchored_urbs(&aru->rx_submitted); | |
945 | usb_unpoison_anchored_urbs(&aru->tx_submitted); | |
946 | ||
e10a9dfc CL |
947 | err = ar9170_usb_init_device(aru); |
948 | if (err) | |
949 | goto err_unrx; | |
950 | ||
951 | err = ar9170_usb_open(&aru->common); | |
952 | if (err) | |
953 | goto err_unrx; | |
954 | ||
955 | return 0; | |
956 | ||
957 | err_unrx: | |
958 | aru->common.state = AR9170_IDLE; | |
959 | ar9170_usb_cancel_urbs(aru); | |
960 | ||
961 | return err; | |
962 | } | |
963 | #endif /* CONFIG_PM */ | |
964 | ||
b63a2cb3 CL |
965 | static struct usb_driver ar9170_driver = { |
966 | .name = "ar9170usb", | |
967 | .probe = ar9170_usb_probe, | |
968 | .disconnect = ar9170_usb_disconnect, | |
969 | .id_table = ar9170_usb_ids, | |
970 | .soft_unbind = 1, | |
e10a9dfc CL |
971 | #ifdef CONFIG_PM |
972 | .suspend = ar9170_suspend, | |
973 | .resume = ar9170_resume, | |
90ccda9b | 974 | .reset_resume = ar9170_resume, |
e10a9dfc | 975 | #endif /* CONFIG_PM */ |
b63a2cb3 CL |
976 | }; |
977 | ||
978 | static int __init ar9170_init(void) | |
979 | { | |
980 | return usb_register(&ar9170_driver); | |
981 | } | |
982 | ||
983 | static void __exit ar9170_exit(void) | |
984 | { | |
985 | usb_deregister(&ar9170_driver); | |
986 | } | |
987 | ||
988 | module_init(ar9170_init); | |
989 | module_exit(ar9170_exit); |