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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> | |
41 | #include <linux/usb.h> | |
42 | #include <linux/firmware.h> | |
43 | #include <linux/etherdevice.h> | |
44 | #include <net/mac80211.h> | |
45 | #include "ar9170.h" | |
46 | #include "cmd.h" | |
47 | #include "hw.h" | |
48 | #include "usb.h" | |
49 | ||
de00c04e | 50 | MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); |
b63a2cb3 CL |
51 | MODULE_AUTHOR("Christian Lamparter <chunkeey@web.de>"); |
52 | MODULE_LICENSE("GPL"); | |
de00c04e | 53 | MODULE_DESCRIPTION("Atheros AR9170 802.11n USB wireless"); |
b63a2cb3 CL |
54 | MODULE_FIRMWARE("ar9170-1.fw"); |
55 | MODULE_FIRMWARE("ar9170-2.fw"); | |
56 | ||
57 | static struct usb_device_id ar9170_usb_ids[] = { | |
58 | /* Atheros 9170 */ | |
59 | { USB_DEVICE(0x0cf3, 0x9170) }, | |
60 | /* Atheros TG121N */ | |
61 | { USB_DEVICE(0x0cf3, 0x1001) }, | |
4fc298b8 CL |
62 | /* Cace Airpcap NX */ |
63 | { USB_DEVICE(0xcace, 0x0300) }, | |
b63a2cb3 CL |
64 | /* D-Link DWA 160A */ |
65 | { USB_DEVICE(0x07d1, 0x3c10) }, | |
66 | /* Netgear WNDA3100 */ | |
67 | { USB_DEVICE(0x0846, 0x9010) }, | |
68 | /* Netgear WN111 v2 */ | |
69 | { USB_DEVICE(0x0846, 0x9001) }, | |
70 | /* Zydas ZD1221 */ | |
71 | { USB_DEVICE(0x0ace, 0x1221) }, | |
957b0516 CL |
72 | /* ZyXEL NWD271N */ |
73 | { USB_DEVICE(0x0586, 0x3417) }, | |
b63a2cb3 CL |
74 | /* Z-Com UB81 BG */ |
75 | { USB_DEVICE(0x0cde, 0x0023) }, | |
76 | /* Z-Com UB82 ABG */ | |
77 | { USB_DEVICE(0x0cde, 0x0026) }, | |
78 | /* Arcadyan WN7512 */ | |
79 | { USB_DEVICE(0x083a, 0xf522) }, | |
80 | /* Planex GWUS300 */ | |
81 | { USB_DEVICE(0x2019, 0x5304) }, | |
82 | /* IO-Data WNGDNUS2 */ | |
83 | { USB_DEVICE(0x04bb, 0x093f) }, | |
84 | ||
85 | /* terminate */ | |
86 | {} | |
87 | }; | |
88 | MODULE_DEVICE_TABLE(usb, ar9170_usb_ids); | |
89 | ||
90 | static void ar9170_usb_tx_urb_complete_free(struct urb *urb) | |
91 | { | |
92 | struct sk_buff *skb = urb->context; | |
93 | struct ar9170_usb *aru = (struct ar9170_usb *) | |
94 | usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); | |
95 | ||
96 | if (!aru) { | |
97 | dev_kfree_skb_irq(skb); | |
98 | return ; | |
99 | } | |
100 | ||
101 | ar9170_handle_tx_status(&aru->common, skb, false, | |
102 | AR9170_TX_STATUS_COMPLETE); | |
103 | } | |
104 | ||
105 | static void ar9170_usb_tx_urb_complete(struct urb *urb) | |
106 | { | |
107 | } | |
108 | ||
109 | static void ar9170_usb_irq_completed(struct urb *urb) | |
110 | { | |
111 | struct ar9170_usb *aru = urb->context; | |
112 | ||
113 | switch (urb->status) { | |
114 | /* everything is fine */ | |
115 | case 0: | |
116 | break; | |
117 | ||
118 | /* disconnect */ | |
119 | case -ENOENT: | |
120 | case -ECONNRESET: | |
121 | case -ENODEV: | |
122 | case -ESHUTDOWN: | |
123 | goto free; | |
124 | ||
125 | default: | |
126 | goto resubmit; | |
127 | } | |
128 | ||
129 | print_hex_dump_bytes("ar9170 irq: ", DUMP_PREFIX_OFFSET, | |
130 | urb->transfer_buffer, urb->actual_length); | |
131 | ||
132 | resubmit: | |
133 | usb_anchor_urb(urb, &aru->rx_submitted); | |
134 | if (usb_submit_urb(urb, GFP_ATOMIC)) { | |
135 | usb_unanchor_urb(urb); | |
136 | goto free; | |
137 | } | |
138 | ||
139 | return; | |
140 | ||
141 | free: | |
142 | usb_buffer_free(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma); | |
143 | } | |
144 | ||
145 | static void ar9170_usb_rx_completed(struct urb *urb) | |
146 | { | |
147 | struct sk_buff *skb = urb->context; | |
148 | struct ar9170_usb *aru = (struct ar9170_usb *) | |
149 | usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); | |
150 | int err; | |
151 | ||
152 | if (!aru) | |
153 | goto free; | |
154 | ||
155 | switch (urb->status) { | |
156 | /* everything is fine */ | |
157 | case 0: | |
158 | break; | |
159 | ||
160 | /* disconnect */ | |
161 | case -ENOENT: | |
162 | case -ECONNRESET: | |
163 | case -ENODEV: | |
164 | case -ESHUTDOWN: | |
165 | goto free; | |
166 | ||
167 | default: | |
168 | goto resubmit; | |
169 | } | |
170 | ||
171 | skb_put(skb, urb->actual_length); | |
172 | ar9170_rx(&aru->common, skb); | |
173 | ||
174 | resubmit: | |
175 | skb_reset_tail_pointer(skb); | |
176 | skb_trim(skb, 0); | |
177 | ||
178 | usb_anchor_urb(urb, &aru->rx_submitted); | |
179 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
180 | if (err) { | |
181 | usb_unanchor_urb(urb); | |
182 | dev_kfree_skb_irq(skb); | |
183 | } | |
184 | ||
185 | return ; | |
186 | ||
187 | free: | |
188 | dev_kfree_skb_irq(skb); | |
189 | return; | |
190 | } | |
191 | ||
192 | static int ar9170_usb_prep_rx_urb(struct ar9170_usb *aru, | |
193 | struct urb *urb, gfp_t gfp) | |
194 | { | |
195 | struct sk_buff *skb; | |
196 | ||
197 | skb = __dev_alloc_skb(AR9170_MAX_RX_BUFFER_SIZE + 32, gfp); | |
198 | if (!skb) | |
199 | return -ENOMEM; | |
200 | ||
201 | /* reserve some space for mac80211's radiotap */ | |
202 | skb_reserve(skb, 32); | |
203 | ||
204 | usb_fill_bulk_urb(urb, aru->udev, | |
205 | usb_rcvbulkpipe(aru->udev, AR9170_EP_RX), | |
206 | skb->data, min(skb_tailroom(skb), | |
207 | AR9170_MAX_RX_BUFFER_SIZE), | |
208 | ar9170_usb_rx_completed, skb); | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru) | |
214 | { | |
215 | struct urb *urb = NULL; | |
216 | void *ibuf; | |
217 | int err = -ENOMEM; | |
218 | ||
219 | /* initialize interrupt endpoint */ | |
220 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
221 | if (!urb) | |
222 | goto out; | |
223 | ||
224 | ibuf = usb_buffer_alloc(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma); | |
225 | if (!ibuf) | |
226 | goto out; | |
227 | ||
228 | usb_fill_int_urb(urb, aru->udev, | |
229 | usb_rcvintpipe(aru->udev, AR9170_EP_IRQ), ibuf, | |
230 | 64, ar9170_usb_irq_completed, aru, 1); | |
231 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
232 | ||
233 | usb_anchor_urb(urb, &aru->rx_submitted); | |
234 | err = usb_submit_urb(urb, GFP_KERNEL); | |
235 | if (err) { | |
236 | usb_unanchor_urb(urb); | |
237 | usb_buffer_free(aru->udev, 64, urb->transfer_buffer, | |
238 | urb->transfer_dma); | |
239 | } | |
240 | ||
241 | out: | |
242 | usb_free_urb(urb); | |
243 | return err; | |
244 | } | |
245 | ||
246 | static int ar9170_usb_alloc_rx_bulk_urbs(struct ar9170_usb *aru) | |
247 | { | |
248 | struct urb *urb; | |
249 | int i; | |
250 | int err = -EINVAL; | |
251 | ||
252 | for (i = 0; i < AR9170_NUM_RX_URBS; i++) { | |
253 | err = -ENOMEM; | |
254 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
255 | if (!urb) | |
256 | goto err_out; | |
257 | ||
258 | err = ar9170_usb_prep_rx_urb(aru, urb, GFP_KERNEL); | |
259 | if (err) { | |
260 | usb_free_urb(urb); | |
261 | goto err_out; | |
262 | } | |
263 | ||
264 | usb_anchor_urb(urb, &aru->rx_submitted); | |
265 | err = usb_submit_urb(urb, GFP_KERNEL); | |
266 | if (err) { | |
267 | usb_unanchor_urb(urb); | |
268 | dev_kfree_skb_any((void *) urb->transfer_buffer); | |
269 | usb_free_urb(urb); | |
270 | goto err_out; | |
271 | } | |
272 | usb_free_urb(urb); | |
273 | } | |
274 | ||
275 | /* the device now waiting for a firmware. */ | |
276 | aru->common.state = AR9170_IDLE; | |
277 | return 0; | |
278 | ||
279 | err_out: | |
280 | ||
281 | usb_kill_anchored_urbs(&aru->rx_submitted); | |
282 | return err; | |
283 | } | |
284 | ||
285 | static void ar9170_usb_cancel_urbs(struct ar9170_usb *aru) | |
286 | { | |
287 | int ret; | |
288 | ||
289 | aru->common.state = AR9170_UNKNOWN_STATE; | |
290 | ||
291 | usb_unlink_anchored_urbs(&aru->tx_submitted); | |
292 | ||
293 | /* give the LED OFF command and the deauth frame a chance to air. */ | |
294 | ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted, | |
295 | msecs_to_jiffies(100)); | |
296 | if (ret == 0) | |
297 | dev_err(&aru->udev->dev, "kill pending tx urbs.\n"); | |
298 | usb_poison_anchored_urbs(&aru->tx_submitted); | |
299 | ||
300 | usb_poison_anchored_urbs(&aru->rx_submitted); | |
301 | } | |
302 | ||
303 | static int ar9170_usb_exec_cmd(struct ar9170 *ar, enum ar9170_cmd cmd, | |
304 | unsigned int plen, void *payload, | |
305 | unsigned int outlen, void *out) | |
306 | { | |
307 | struct ar9170_usb *aru = (void *) ar; | |
308 | struct urb *urb = NULL; | |
309 | unsigned long flags; | |
310 | int err = -ENOMEM; | |
311 | ||
312 | if (unlikely(!IS_ACCEPTING_CMD(ar))) | |
313 | return -EPERM; | |
314 | ||
315 | if (WARN_ON(plen > AR9170_MAX_CMD_LEN - 4)) | |
316 | return -EINVAL; | |
317 | ||
318 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
319 | if (unlikely(!urb)) | |
320 | goto err_free; | |
321 | ||
322 | ar->cmdbuf[0] = cpu_to_le32(plen); | |
323 | ar->cmdbuf[0] |= cpu_to_le32(cmd << 8); | |
324 | /* writing multiple regs fills this buffer already */ | |
325 | if (plen && payload != (u8 *)(&ar->cmdbuf[1])) | |
326 | memcpy(&ar->cmdbuf[1], payload, plen); | |
327 | ||
328 | spin_lock_irqsave(&aru->common.cmdlock, flags); | |
329 | aru->readbuf = (u8 *)out; | |
330 | aru->readlen = outlen; | |
331 | spin_unlock_irqrestore(&aru->common.cmdlock, flags); | |
332 | ||
333 | usb_fill_int_urb(urb, aru->udev, | |
334 | usb_sndbulkpipe(aru->udev, AR9170_EP_CMD), | |
335 | aru->common.cmdbuf, plen + 4, | |
336 | ar9170_usb_tx_urb_complete, NULL, 1); | |
337 | ||
338 | usb_anchor_urb(urb, &aru->tx_submitted); | |
339 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
340 | if (err) { | |
341 | usb_unanchor_urb(urb); | |
342 | usb_free_urb(urb); | |
343 | goto err_unbuf; | |
344 | } | |
345 | usb_free_urb(urb); | |
346 | ||
347 | err = wait_for_completion_timeout(&aru->cmd_wait, HZ); | |
348 | if (err == 0) { | |
349 | err = -ETIMEDOUT; | |
350 | goto err_unbuf; | |
351 | } | |
352 | ||
ba5101d0 | 353 | if (aru->readlen != outlen) { |
b63a2cb3 CL |
354 | err = -EMSGSIZE; |
355 | goto err_unbuf; | |
356 | } | |
357 | ||
358 | return 0; | |
359 | ||
360 | err_unbuf: | |
361 | /* Maybe the device was removed in the second we were waiting? */ | |
362 | if (IS_STARTED(ar)) { | |
363 | dev_err(&aru->udev->dev, "no command feedback " | |
364 | "received (%d).\n", err); | |
365 | ||
366 | /* provide some maybe useful debug information */ | |
367 | print_hex_dump_bytes("ar9170 cmd: ", DUMP_PREFIX_NONE, | |
368 | aru->common.cmdbuf, plen + 4); | |
369 | dump_stack(); | |
370 | } | |
371 | ||
372 | /* invalidate to avoid completing the next prematurely */ | |
373 | spin_lock_irqsave(&aru->common.cmdlock, flags); | |
374 | aru->readbuf = NULL; | |
375 | aru->readlen = 0; | |
376 | spin_unlock_irqrestore(&aru->common.cmdlock, flags); | |
377 | ||
378 | err_free: | |
379 | ||
380 | return err; | |
381 | } | |
382 | ||
383 | static int ar9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb, | |
384 | bool txstatus_needed, unsigned int extra_len) | |
385 | { | |
386 | struct ar9170_usb *aru = (struct ar9170_usb *) ar; | |
387 | struct urb *urb; | |
388 | int err; | |
389 | ||
390 | if (unlikely(!IS_STARTED(ar))) { | |
391 | /* Seriously, what were you drink... err... thinking!? */ | |
392 | return -EPERM; | |
393 | } | |
394 | ||
395 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
396 | if (unlikely(!urb)) | |
397 | return -ENOMEM; | |
398 | ||
399 | usb_fill_bulk_urb(urb, aru->udev, | |
400 | usb_sndbulkpipe(aru->udev, AR9170_EP_TX), | |
401 | skb->data, skb->len + extra_len, (txstatus_needed ? | |
402 | ar9170_usb_tx_urb_complete : | |
403 | ar9170_usb_tx_urb_complete_free), skb); | |
404 | urb->transfer_flags |= URB_ZERO_PACKET; | |
405 | ||
406 | usb_anchor_urb(urb, &aru->tx_submitted); | |
407 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
408 | if (unlikely(err)) | |
409 | usb_unanchor_urb(urb); | |
410 | ||
411 | usb_free_urb(urb); | |
412 | return err; | |
413 | } | |
414 | ||
415 | static void ar9170_usb_callback_cmd(struct ar9170 *ar, u32 len , void *buffer) | |
416 | { | |
417 | struct ar9170_usb *aru = (void *) ar; | |
418 | unsigned long flags; | |
419 | u32 in, out; | |
420 | ||
421 | if (!buffer) | |
422 | return ; | |
423 | ||
424 | in = le32_to_cpup((__le32 *)buffer); | |
425 | out = le32_to_cpu(ar->cmdbuf[0]); | |
426 | ||
427 | /* mask off length byte */ | |
428 | out &= ~0xFF; | |
429 | ||
430 | if (aru->readlen >= 0) { | |
431 | /* add expected length */ | |
432 | out |= aru->readlen; | |
433 | } else { | |
434 | /* add obtained length */ | |
435 | out |= in & 0xFF; | |
436 | } | |
437 | ||
438 | /* | |
439 | * Some commands (e.g: AR9170_CMD_FREQUENCY) have a variable response | |
440 | * length and we cannot predict the correct length in advance. | |
441 | * So we only check if we provided enough space for the data. | |
442 | */ | |
443 | if (unlikely(out < in)) { | |
444 | dev_warn(&aru->udev->dev, "received invalid command response " | |
445 | "got %d bytes, instead of %d bytes " | |
446 | "and the resp length is %d bytes\n", | |
447 | in, out, len); | |
448 | print_hex_dump_bytes("ar9170 invalid resp: ", | |
449 | DUMP_PREFIX_OFFSET, buffer, len); | |
450 | /* | |
451 | * Do not complete, then the command times out, | |
452 | * and we get a stack trace from there. | |
453 | */ | |
454 | return ; | |
455 | } | |
456 | ||
457 | spin_lock_irqsave(&aru->common.cmdlock, flags); | |
458 | if (aru->readbuf && len > 0) { | |
459 | memcpy(aru->readbuf, buffer + 4, len - 4); | |
460 | aru->readbuf = NULL; | |
461 | } | |
462 | complete(&aru->cmd_wait); | |
463 | spin_unlock_irqrestore(&aru->common.cmdlock, flags); | |
464 | } | |
465 | ||
466 | static int ar9170_usb_upload(struct ar9170_usb *aru, const void *data, | |
467 | size_t len, u32 addr, bool complete) | |
468 | { | |
469 | int transfer, err; | |
470 | u8 *buf = kmalloc(4096, GFP_KERNEL); | |
471 | ||
472 | if (!buf) | |
473 | return -ENOMEM; | |
474 | ||
475 | while (len) { | |
476 | transfer = min_t(int, len, 4096); | |
477 | memcpy(buf, data, transfer); | |
478 | ||
479 | err = usb_control_msg(aru->udev, usb_sndctrlpipe(aru->udev, 0), | |
480 | 0x30 /* FW DL */, 0x40 | USB_DIR_OUT, | |
481 | addr >> 8, 0, buf, transfer, 1000); | |
482 | ||
483 | if (err < 0) { | |
484 | kfree(buf); | |
485 | return err; | |
486 | } | |
487 | ||
488 | len -= transfer; | |
489 | data += transfer; | |
490 | addr += transfer; | |
491 | } | |
492 | kfree(buf); | |
493 | ||
494 | if (complete) { | |
495 | err = usb_control_msg(aru->udev, usb_sndctrlpipe(aru->udev, 0), | |
496 | 0x31 /* FW DL COMPLETE */, | |
497 | 0x40 | USB_DIR_OUT, 0, 0, NULL, 0, 5000); | |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static int ar9170_usb_request_firmware(struct ar9170_usb *aru) | |
504 | { | |
505 | int err = 0; | |
506 | ||
507 | err = request_firmware(&aru->init_values, "ar9170-1.fw", | |
508 | &aru->udev->dev); | |
509 | if (err) { | |
510 | dev_err(&aru->udev->dev, "file with init values not found.\n"); | |
511 | return err; | |
512 | } | |
513 | ||
514 | err = request_firmware(&aru->firmware, "ar9170-2.fw", &aru->udev->dev); | |
515 | if (err) { | |
516 | release_firmware(aru->init_values); | |
517 | dev_err(&aru->udev->dev, "firmware file not found.\n"); | |
518 | return err; | |
519 | } | |
520 | ||
521 | return err; | |
522 | } | |
523 | ||
524 | static int ar9170_usb_reset(struct ar9170_usb *aru) | |
525 | { | |
526 | int ret, lock = (aru->intf->condition != USB_INTERFACE_BINDING); | |
527 | ||
528 | if (lock) { | |
529 | ret = usb_lock_device_for_reset(aru->udev, aru->intf); | |
530 | if (ret < 0) { | |
531 | dev_err(&aru->udev->dev, "unable to lock device " | |
532 | "for reset (%d).\n", ret); | |
533 | return ret; | |
534 | } | |
535 | } | |
536 | ||
537 | ret = usb_reset_device(aru->udev); | |
538 | if (lock) | |
539 | usb_unlock_device(aru->udev); | |
540 | ||
541 | /* let it rest - for a second - */ | |
542 | msleep(1000); | |
543 | ||
544 | return ret; | |
545 | } | |
546 | ||
547 | static int ar9170_usb_upload_firmware(struct ar9170_usb *aru) | |
548 | { | |
549 | int err; | |
550 | ||
551 | /* First, upload initial values to device RAM */ | |
552 | err = ar9170_usb_upload(aru, aru->init_values->data, | |
553 | aru->init_values->size, 0x102800, false); | |
554 | if (err) { | |
555 | dev_err(&aru->udev->dev, "firmware part 1 " | |
556 | "upload failed (%d).\n", err); | |
557 | return err; | |
558 | } | |
559 | ||
560 | /* Then, upload the firmware itself and start it */ | |
561 | return ar9170_usb_upload(aru, aru->firmware->data, aru->firmware->size, | |
562 | 0x200000, true); | |
563 | } | |
564 | ||
565 | static int ar9170_usb_init_transport(struct ar9170_usb *aru) | |
566 | { | |
567 | struct ar9170 *ar = (void *) &aru->common; | |
568 | int err; | |
569 | ||
570 | ar9170_regwrite_begin(ar); | |
571 | ||
572 | /* Set USB Rx stream mode MAX packet number to 2 */ | |
573 | ar9170_regwrite(AR9170_USB_REG_MAX_AGG_UPLOAD, 0x4); | |
574 | ||
575 | /* Set USB Rx stream mode timeout to 10us */ | |
576 | ar9170_regwrite(AR9170_USB_REG_UPLOAD_TIME_CTL, 0x80); | |
577 | ||
578 | ar9170_regwrite_finish(); | |
579 | ||
580 | err = ar9170_regwrite_result(); | |
581 | if (err) | |
582 | dev_err(&aru->udev->dev, "USB setup failed (%d).\n", err); | |
583 | ||
584 | return err; | |
585 | } | |
586 | ||
587 | static void ar9170_usb_stop(struct ar9170 *ar) | |
588 | { | |
589 | struct ar9170_usb *aru = (void *) ar; | |
590 | int ret; | |
591 | ||
592 | if (IS_ACCEPTING_CMD(ar)) | |
593 | aru->common.state = AR9170_STOPPED; | |
594 | ||
595 | /* lets wait a while until the tx - queues are dried out */ | |
596 | ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted, | |
597 | msecs_to_jiffies(1000)); | |
598 | if (ret == 0) | |
599 | dev_err(&aru->udev->dev, "kill pending tx urbs.\n"); | |
600 | ||
601 | usb_poison_anchored_urbs(&aru->tx_submitted); | |
602 | ||
603 | /* | |
604 | * Note: | |
605 | * So far we freed all tx urbs, but we won't dare to touch any rx urbs. | |
606 | * Else we would end up with a unresponsive device... | |
607 | */ | |
608 | } | |
609 | ||
610 | static int ar9170_usb_open(struct ar9170 *ar) | |
611 | { | |
612 | struct ar9170_usb *aru = (void *) ar; | |
613 | int err; | |
614 | ||
615 | usb_unpoison_anchored_urbs(&aru->tx_submitted); | |
616 | err = ar9170_usb_init_transport(aru); | |
617 | if (err) { | |
618 | usb_poison_anchored_urbs(&aru->tx_submitted); | |
619 | return err; | |
620 | } | |
621 | ||
622 | aru->common.state = AR9170_IDLE; | |
623 | return 0; | |
624 | } | |
625 | ||
e10a9dfc CL |
626 | static int ar9170_usb_init_device(struct ar9170_usb *aru) |
627 | { | |
628 | int err; | |
629 | ||
630 | err = ar9170_usb_alloc_rx_irq_urb(aru); | |
631 | if (err) | |
632 | goto err_out; | |
633 | ||
634 | err = ar9170_usb_alloc_rx_bulk_urbs(aru); | |
635 | if (err) | |
636 | goto err_unrx; | |
637 | ||
638 | err = ar9170_usb_upload_firmware(aru); | |
639 | if (err) { | |
640 | err = ar9170_echo_test(&aru->common, 0x60d43110); | |
641 | if (err) { | |
642 | /* force user invention, by disabling the device */ | |
643 | err = usb_driver_set_configuration(aru->udev, -1); | |
644 | dev_err(&aru->udev->dev, "device is in a bad state. " | |
645 | "please reconnect it!\n"); | |
646 | goto err_unrx; | |
647 | } | |
648 | } | |
649 | ||
650 | return 0; | |
651 | ||
652 | err_unrx: | |
653 | ar9170_usb_cancel_urbs(aru); | |
654 | ||
655 | err_out: | |
656 | return err; | |
657 | } | |
658 | ||
b63a2cb3 CL |
659 | static int ar9170_usb_probe(struct usb_interface *intf, |
660 | const struct usb_device_id *id) | |
661 | { | |
662 | struct ar9170_usb *aru; | |
663 | struct ar9170 *ar; | |
664 | struct usb_device *udev; | |
665 | int err; | |
666 | ||
667 | aru = ar9170_alloc(sizeof(*aru)); | |
668 | if (IS_ERR(aru)) { | |
669 | err = PTR_ERR(aru); | |
670 | goto out; | |
671 | } | |
672 | ||
673 | udev = interface_to_usbdev(intf); | |
674 | usb_get_dev(udev); | |
675 | aru->udev = udev; | |
676 | aru->intf = intf; | |
677 | ar = &aru->common; | |
678 | ||
679 | usb_set_intfdata(intf, aru); | |
680 | SET_IEEE80211_DEV(ar->hw, &udev->dev); | |
681 | ||
682 | init_usb_anchor(&aru->rx_submitted); | |
683 | init_usb_anchor(&aru->tx_submitted); | |
684 | init_completion(&aru->cmd_wait); | |
685 | ||
686 | aru->common.stop = ar9170_usb_stop; | |
687 | aru->common.open = ar9170_usb_open; | |
688 | aru->common.tx = ar9170_usb_tx; | |
689 | aru->common.exec_cmd = ar9170_usb_exec_cmd; | |
690 | aru->common.callback_cmd = ar9170_usb_callback_cmd; | |
691 | ||
8a713040 | 692 | #ifdef CONFIG_PM |
90ccda9b | 693 | udev->reset_resume = 1; |
8a713040 | 694 | #endif |
b63a2cb3 CL |
695 | err = ar9170_usb_reset(aru); |
696 | if (err) | |
e10a9dfc | 697 | goto err_freehw; |
b63a2cb3 CL |
698 | |
699 | err = ar9170_usb_request_firmware(aru); | |
700 | if (err) | |
e10a9dfc | 701 | goto err_freehw; |
b63a2cb3 | 702 | |
e10a9dfc | 703 | err = ar9170_usb_init_device(aru); |
b63a2cb3 CL |
704 | if (err) |
705 | goto err_freefw; | |
706 | ||
b63a2cb3 CL |
707 | err = ar9170_usb_open(ar); |
708 | if (err) | |
709 | goto err_unrx; | |
710 | ||
711 | err = ar9170_register(ar, &udev->dev); | |
712 | ||
713 | ar9170_usb_stop(ar); | |
714 | if (err) | |
715 | goto err_unrx; | |
716 | ||
717 | return 0; | |
718 | ||
719 | err_unrx: | |
720 | ar9170_usb_cancel_urbs(aru); | |
721 | ||
722 | err_freefw: | |
723 | release_firmware(aru->init_values); | |
724 | release_firmware(aru->firmware); | |
725 | ||
e10a9dfc | 726 | err_freehw: |
b63a2cb3 CL |
727 | usb_set_intfdata(intf, NULL); |
728 | usb_put_dev(udev); | |
729 | ieee80211_free_hw(ar->hw); | |
730 | out: | |
731 | return err; | |
732 | } | |
733 | ||
734 | static void ar9170_usb_disconnect(struct usb_interface *intf) | |
735 | { | |
736 | struct ar9170_usb *aru = usb_get_intfdata(intf); | |
737 | ||
738 | if (!aru) | |
739 | return; | |
740 | ||
741 | aru->common.state = AR9170_IDLE; | |
742 | ar9170_unregister(&aru->common); | |
743 | ar9170_usb_cancel_urbs(aru); | |
744 | ||
745 | release_firmware(aru->init_values); | |
746 | release_firmware(aru->firmware); | |
747 | ||
748 | usb_put_dev(aru->udev); | |
749 | usb_set_intfdata(intf, NULL); | |
750 | ieee80211_free_hw(aru->common.hw); | |
751 | } | |
752 | ||
e10a9dfc CL |
753 | #ifdef CONFIG_PM |
754 | static int ar9170_suspend(struct usb_interface *intf, | |
755 | pm_message_t message) | |
756 | { | |
757 | struct ar9170_usb *aru = usb_get_intfdata(intf); | |
758 | ||
759 | if (!aru) | |
760 | return -ENODEV; | |
761 | ||
762 | aru->common.state = AR9170_IDLE; | |
763 | ar9170_usb_cancel_urbs(aru); | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
768 | static int ar9170_resume(struct usb_interface *intf) | |
769 | { | |
770 | struct ar9170_usb *aru = usb_get_intfdata(intf); | |
771 | int err; | |
772 | ||
773 | if (!aru) | |
774 | return -ENODEV; | |
775 | ||
776 | usb_unpoison_anchored_urbs(&aru->rx_submitted); | |
777 | usb_unpoison_anchored_urbs(&aru->tx_submitted); | |
778 | ||
779 | /* | |
780 | * FIXME: firmware upload will fail on resume. | |
781 | * but this is better than a hang! | |
782 | */ | |
783 | ||
784 | err = ar9170_usb_init_device(aru); | |
785 | if (err) | |
786 | goto err_unrx; | |
787 | ||
788 | err = ar9170_usb_open(&aru->common); | |
789 | if (err) | |
790 | goto err_unrx; | |
791 | ||
792 | return 0; | |
793 | ||
794 | err_unrx: | |
795 | aru->common.state = AR9170_IDLE; | |
796 | ar9170_usb_cancel_urbs(aru); | |
797 | ||
798 | return err; | |
799 | } | |
800 | #endif /* CONFIG_PM */ | |
801 | ||
b63a2cb3 CL |
802 | static struct usb_driver ar9170_driver = { |
803 | .name = "ar9170usb", | |
804 | .probe = ar9170_usb_probe, | |
805 | .disconnect = ar9170_usb_disconnect, | |
806 | .id_table = ar9170_usb_ids, | |
807 | .soft_unbind = 1, | |
e10a9dfc CL |
808 | #ifdef CONFIG_PM |
809 | .suspend = ar9170_suspend, | |
810 | .resume = ar9170_resume, | |
90ccda9b | 811 | .reset_resume = ar9170_resume, |
e10a9dfc | 812 | #endif /* CONFIG_PM */ |
b63a2cb3 CL |
813 | }; |
814 | ||
815 | static int __init ar9170_init(void) | |
816 | { | |
817 | return usb_register(&ar9170_driver); | |
818 | } | |
819 | ||
820 | static void __exit ar9170_exit(void) | |
821 | { | |
822 | usb_deregister(&ar9170_driver); | |
823 | } | |
824 | ||
825 | module_init(ar9170_init); | |
826 | module_exit(ar9170_exit); |