1 /*
2 * Copyright (c) 2007-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <linux/module.h>
19 #include <linux/usb.h>
20
21 #include "debug.h"
22 #include "core.h"
23
24 /* constants */
25 #define TX_URB_COUNT 32
26 #define RX_URB_COUNT 32
27 #define ATH6KL_USB_RX_BUFFER_SIZE 1700
28
29 /* tx/rx pipes for usb */
30 enum ATH6KL_USB_PIPE_ID {
31 ATH6KL_USB_PIPE_TX_CTRL = 0,
32 ATH6KL_USB_PIPE_TX_DATA_LP,
33 ATH6KL_USB_PIPE_TX_DATA_MP,
34 ATH6KL_USB_PIPE_TX_DATA_HP,
35 ATH6KL_USB_PIPE_RX_CTRL,
36 ATH6KL_USB_PIPE_RX_DATA,
37 ATH6KL_USB_PIPE_RX_DATA2,
38 ATH6KL_USB_PIPE_RX_INT,
39 ATH6KL_USB_PIPE_MAX
40 };
41
42 #define ATH6KL_USB_PIPE_INVALID ATH6KL_USB_PIPE_MAX
43
44 struct ath6kl_usb_pipe {
45 struct list_head urb_list_head;
46 struct usb_anchor urb_submitted;
47 u32 urb_alloc;
48 u32 urb_cnt;
49 u32 urb_cnt_thresh;
50 unsigned int usb_pipe_handle;
51 u32 flags;
52 u8 ep_address;
53 u8 logical_pipe_num;
54 struct ath6kl_usb *ar_usb;
55 u16 max_packet_size;
56 struct work_struct io_complete_work;
57 struct sk_buff_head io_comp_queue;
58 struct usb_endpoint_descriptor *ep_desc;
59 };
60
61 #define ATH6KL_USB_PIPE_FLAG_TX (1 << 0)
62
63 /* usb device object */
64 struct ath6kl_usb {
65 /* protects pipe->urb_list_head and pipe->urb_cnt */
66 spinlock_t cs_lock;
67
68 struct usb_device *udev;
69 struct usb_interface *interface;
70 struct ath6kl_usb_pipe pipes[ATH6KL_USB_PIPE_MAX];
71 u8 *diag_cmd_buffer;
72 u8 *diag_resp_buffer;
73 struct ath6kl *ar;
74 };
75
76 /* usb urb object */
77 struct ath6kl_urb_context {
78 struct list_head link;
79 struct ath6kl_usb_pipe *pipe;
80 struct sk_buff *skb;
81 struct ath6kl *ar;
82 };
83
84 /* USB endpoint definitions */
85 #define ATH6KL_USB_EP_ADDR_APP_CTRL_IN 0x81
86 #define ATH6KL_USB_EP_ADDR_APP_DATA_IN 0x82
87 #define ATH6KL_USB_EP_ADDR_APP_DATA2_IN 0x83
88 #define ATH6KL_USB_EP_ADDR_APP_INT_IN 0x84
89
90 #define ATH6KL_USB_EP_ADDR_APP_CTRL_OUT 0x01
91 #define ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT 0x02
92 #define ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT 0x03
93 #define ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT 0x04
94
95 /* diagnostic command defnitions */
96 #define ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD 1
97 #define ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP 2
98 #define ATH6KL_USB_CONTROL_REQ_DIAG_CMD 3
99 #define ATH6KL_USB_CONTROL_REQ_DIAG_RESP 4
100
101 #define ATH6KL_USB_CTRL_DIAG_CC_READ 0
102 #define ATH6KL_USB_CTRL_DIAG_CC_WRITE 1
103
104 struct ath6kl_usb_ctrl_diag_cmd_write {
105 __le32 cmd;
106 __le32 address;
107 __le32 value;
108 __le32 _pad[1];
109 } __packed;
110
111 struct ath6kl_usb_ctrl_diag_cmd_read {
112 __le32 cmd;
113 __le32 address;
114 } __packed;
115
116 struct ath6kl_usb_ctrl_diag_resp_read {
117 __le32 value;
118 } __packed;
119
120 /* function declarations */
121 static void ath6kl_usb_recv_complete(struct urb *urb);
122
123 #define ATH6KL_USB_IS_BULK_EP(attr) (((attr) & 3) == 0x02)
124 #define ATH6KL_USB_IS_INT_EP(attr) (((attr) & 3) == 0x03)
125 #define ATH6KL_USB_IS_ISOC_EP(attr) (((attr) & 3) == 0x01)
126 #define ATH6KL_USB_IS_DIR_IN(addr) ((addr) & 0x80)
127
128 /* pipe/urb operations */
129 static struct ath6kl_urb_context *
ath6kl_usb_alloc_urb_from_pipe(struct ath6kl_usb_pipe * pipe)130 ath6kl_usb_alloc_urb_from_pipe(struct ath6kl_usb_pipe *pipe)
131 {
132 struct ath6kl_urb_context *urb_context = NULL;
133 unsigned long flags;
134
135 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
136 if (!list_empty(&pipe->urb_list_head)) {
137 urb_context =
138 list_first_entry(&pipe->urb_list_head,
139 struct ath6kl_urb_context, link);
140 list_del(&urb_context->link);
141 pipe->urb_cnt--;
142 }
143 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
144
145 return urb_context;
146 }
147
ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe * pipe,struct ath6kl_urb_context * urb_context)148 static void ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe *pipe,
149 struct ath6kl_urb_context *urb_context)
150 {
151 unsigned long flags;
152
153 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
154 pipe->urb_cnt++;
155
156 list_add(&urb_context->link, &pipe->urb_list_head);
157 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
158 }
159
ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context * urb_context)160 static void ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context *urb_context)
161 {
162 dev_kfree_skb(urb_context->skb);
163 urb_context->skb = NULL;
164
165 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
166 }
167
ath6kl_usb_priv(struct ath6kl * ar)168 static inline struct ath6kl_usb *ath6kl_usb_priv(struct ath6kl *ar)
169 {
170 return ar->hif_priv;
171 }
172
173 /* pipe resource allocation/cleanup */
ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe * pipe,int urb_cnt)174 static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe,
175 int urb_cnt)
176 {
177 struct ath6kl_urb_context *urb_context;
178 int status = 0, i;
179
180 INIT_LIST_HEAD(&pipe->urb_list_head);
181 init_usb_anchor(&pipe->urb_submitted);
182
183 for (i = 0; i < urb_cnt; i++) {
184 urb_context = kzalloc(sizeof(struct ath6kl_urb_context),
185 GFP_KERNEL);
186 if (urb_context == NULL) {
187 status = -ENOMEM;
188 goto fail_alloc_pipe_resources;
189 }
190
191 urb_context->pipe = pipe;
192
193 /*
194 * we are only allocate the urb contexts here, the actual URB
195 * is allocated from the kernel as needed to do a transaction
196 */
197 pipe->urb_alloc++;
198 ath6kl_usb_free_urb_to_pipe(pipe, urb_context);
199 }
200
201 ath6kl_dbg(ATH6KL_DBG_USB,
202 "ath6kl usb: alloc resources lpipe:%d hpipe:0x%X urbs:%d\n",
203 pipe->logical_pipe_num, pipe->usb_pipe_handle,
204 pipe->urb_alloc);
205
206 fail_alloc_pipe_resources:
207 return status;
208 }
209
ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe * pipe)210 static void ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe *pipe)
211 {
212 struct ath6kl_urb_context *urb_context;
213
214 if (pipe->ar_usb == NULL) {
215 /* nothing allocated for this pipe */
216 return;
217 }
218
219 ath6kl_dbg(ATH6KL_DBG_USB,
220 "ath6kl usb: free resources lpipe:%d"
221 "hpipe:0x%X urbs:%d avail:%d\n",
222 pipe->logical_pipe_num, pipe->usb_pipe_handle,
223 pipe->urb_alloc, pipe->urb_cnt);
224
225 if (pipe->urb_alloc != pipe->urb_cnt) {
226 ath6kl_dbg(ATH6KL_DBG_USB,
227 "ath6kl usb: urb leak! lpipe:%d"
228 "hpipe:0x%X urbs:%d avail:%d\n",
229 pipe->logical_pipe_num, pipe->usb_pipe_handle,
230 pipe->urb_alloc, pipe->urb_cnt);
231 }
232
233 while (true) {
234 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
235 if (urb_context == NULL)
236 break;
237 kfree(urb_context);
238 }
239
240 }
241
ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb * ar_usb)242 static void ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb *ar_usb)
243 {
244 int i;
245
246 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++)
247 ath6kl_usb_free_pipe_resources(&ar_usb->pipes[i]);
248
249 }
250
ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb * ar_usb,u8 ep_address,int * urb_count)251 static u8 ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb *ar_usb,
252 u8 ep_address, int *urb_count)
253 {
254 u8 pipe_num = ATH6KL_USB_PIPE_INVALID;
255
256 switch (ep_address) {
257 case ATH6KL_USB_EP_ADDR_APP_CTRL_IN:
258 pipe_num = ATH6KL_USB_PIPE_RX_CTRL;
259 *urb_count = RX_URB_COUNT;
260 break;
261 case ATH6KL_USB_EP_ADDR_APP_DATA_IN:
262 pipe_num = ATH6KL_USB_PIPE_RX_DATA;
263 *urb_count = RX_URB_COUNT;
264 break;
265 case ATH6KL_USB_EP_ADDR_APP_INT_IN:
266 pipe_num = ATH6KL_USB_PIPE_RX_INT;
267 *urb_count = RX_URB_COUNT;
268 break;
269 case ATH6KL_USB_EP_ADDR_APP_DATA2_IN:
270 pipe_num = ATH6KL_USB_PIPE_RX_DATA2;
271 *urb_count = RX_URB_COUNT;
272 break;
273 case ATH6KL_USB_EP_ADDR_APP_CTRL_OUT:
274 pipe_num = ATH6KL_USB_PIPE_TX_CTRL;
275 *urb_count = TX_URB_COUNT;
276 break;
277 case ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT:
278 pipe_num = ATH6KL_USB_PIPE_TX_DATA_LP;
279 *urb_count = TX_URB_COUNT;
280 break;
281 case ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT:
282 pipe_num = ATH6KL_USB_PIPE_TX_DATA_MP;
283 *urb_count = TX_URB_COUNT;
284 break;
285 case ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT:
286 pipe_num = ATH6KL_USB_PIPE_TX_DATA_HP;
287 *urb_count = TX_URB_COUNT;
288 break;
289 default:
290 /* note: there may be endpoints not currently used */
291 break;
292 }
293
294 return pipe_num;
295 }
296
ath6kl_usb_setup_pipe_resources(struct ath6kl_usb * ar_usb)297 static int ath6kl_usb_setup_pipe_resources(struct ath6kl_usb *ar_usb)
298 {
299 struct usb_interface *interface = ar_usb->interface;
300 struct usb_host_interface *iface_desc = interface->cur_altsetting;
301 struct usb_endpoint_descriptor *endpoint;
302 struct ath6kl_usb_pipe *pipe;
303 int i, urbcount, status = 0;
304 u8 pipe_num;
305
306 ath6kl_dbg(ATH6KL_DBG_USB, "setting up USB Pipes using interface\n");
307
308 /* walk decriptors and setup pipes */
309 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
310 endpoint = &iface_desc->endpoint[i].desc;
311
312 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
313 ath6kl_dbg(ATH6KL_DBG_USB,
314 "%s Bulk Ep:0x%2.2X maxpktsz:%d\n",
315 ATH6KL_USB_IS_DIR_IN
316 (endpoint->bEndpointAddress) ?
317 "RX" : "TX", endpoint->bEndpointAddress,
318 le16_to_cpu(endpoint->wMaxPacketSize));
319 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
320 ath6kl_dbg(ATH6KL_DBG_USB,
321 "%s Int Ep:0x%2.2X maxpktsz:%d interval:%d\n",
322 ATH6KL_USB_IS_DIR_IN
323 (endpoint->bEndpointAddress) ?
324 "RX" : "TX", endpoint->bEndpointAddress,
325 le16_to_cpu(endpoint->wMaxPacketSize),
326 endpoint->bInterval);
327 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
328 /* TODO for ISO */
329 ath6kl_dbg(ATH6KL_DBG_USB,
330 "%s ISOC Ep:0x%2.2X maxpktsz:%d interval:%d\n",
331 ATH6KL_USB_IS_DIR_IN
332 (endpoint->bEndpointAddress) ?
333 "RX" : "TX", endpoint->bEndpointAddress,
334 le16_to_cpu(endpoint->wMaxPacketSize),
335 endpoint->bInterval);
336 }
337 urbcount = 0;
338
339 pipe_num =
340 ath6kl_usb_get_logical_pipe_num(ar_usb,
341 endpoint->bEndpointAddress,
342 &urbcount);
343 if (pipe_num == ATH6KL_USB_PIPE_INVALID)
344 continue;
345
346 pipe = &ar_usb->pipes[pipe_num];
347 if (pipe->ar_usb != NULL) {
348 /* hmmm..pipe was already setup */
349 continue;
350 }
351
352 pipe->ar_usb = ar_usb;
353 pipe->logical_pipe_num = pipe_num;
354 pipe->ep_address = endpoint->bEndpointAddress;
355 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
356
357 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
358 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
359 pipe->usb_pipe_handle =
360 usb_rcvbulkpipe(ar_usb->udev,
361 pipe->ep_address);
362 } else {
363 pipe->usb_pipe_handle =
364 usb_sndbulkpipe(ar_usb->udev,
365 pipe->ep_address);
366 }
367 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
368 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
369 pipe->usb_pipe_handle =
370 usb_rcvintpipe(ar_usb->udev,
371 pipe->ep_address);
372 } else {
373 pipe->usb_pipe_handle =
374 usb_sndintpipe(ar_usb->udev,
375 pipe->ep_address);
376 }
377 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
378 /* TODO for ISO */
379 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
380 pipe->usb_pipe_handle =
381 usb_rcvisocpipe(ar_usb->udev,
382 pipe->ep_address);
383 } else {
384 pipe->usb_pipe_handle =
385 usb_sndisocpipe(ar_usb->udev,
386 pipe->ep_address);
387 }
388 }
389
390 pipe->ep_desc = endpoint;
391
392 if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address))
393 pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX;
394
395 status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount);
396 if (status != 0)
397 break;
398 }
399
400 return status;
401 }
402
403 /* pipe operations */
ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe * recv_pipe,int buffer_length)404 static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe,
405 int buffer_length)
406 {
407 struct ath6kl_urb_context *urb_context;
408 struct urb *urb;
409 int usb_status;
410
411 while (true) {
412 urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe);
413 if (urb_context == NULL)
414 break;
415
416 urb_context->skb = dev_alloc_skb(buffer_length);
417 if (urb_context->skb == NULL)
418 goto err_cleanup_urb;
419
420 urb = usb_alloc_urb(0, GFP_ATOMIC);
421 if (urb == NULL)
422 goto err_cleanup_urb;
423
424 usb_fill_bulk_urb(urb,
425 recv_pipe->ar_usb->udev,
426 recv_pipe->usb_pipe_handle,
427 urb_context->skb->data,
428 buffer_length,
429 ath6kl_usb_recv_complete, urb_context);
430
431 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
432 "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n",
433 recv_pipe->logical_pipe_num,
434 recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
435 buffer_length, urb_context->skb);
436
437 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
438 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
439
440 if (usb_status) {
441 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
442 "ath6kl usb : usb bulk recv failed %d\n",
443 usb_status);
444 usb_unanchor_urb(urb);
445 usb_free_urb(urb);
446 goto err_cleanup_urb;
447 }
448 usb_free_urb(urb);
449 }
450 return;
451
452 err_cleanup_urb:
453 ath6kl_usb_cleanup_recv_urb(urb_context);
454 return;
455 }
456
ath6kl_usb_flush_all(struct ath6kl_usb * ar_usb)457 static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb)
458 {
459 int i;
460
461 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
462 if (ar_usb->pipes[i].ar_usb != NULL)
463 usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
464 }
465
466 /*
467 * Flushing any pending I/O may schedule work this call will block
468 * until all scheduled work runs to completion.
469 */
470 flush_scheduled_work();
471 }
472
ath6kl_usb_start_recv_pipes(struct ath6kl_usb * ar_usb)473 static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb)
474 {
475 /*
476 * note: control pipe is no longer used
477 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh =
478 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2;
479 * ath6kl_usb_post_recv_transfers(&ar_usb->
480 * pipes[ATH6KL_USB_PIPE_RX_CTRL],
481 * ATH6KL_USB_RX_BUFFER_SIZE);
482 */
483
484 ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh =
485 ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_alloc / 2;
486 ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA],
487 ATH6KL_USB_RX_BUFFER_SIZE);
488 }
489
490 /* hif usb rx/tx completion functions */
ath6kl_usb_recv_complete(struct urb * urb)491 static void ath6kl_usb_recv_complete(struct urb *urb)
492 {
493 struct ath6kl_urb_context *urb_context = urb->context;
494 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
495 struct sk_buff *skb = NULL;
496 int status = 0;
497
498 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
499 "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__,
500 pipe->logical_pipe_num, urb->status, urb->actual_length,
501 urb);
502
503 if (urb->status != 0) {
504 status = -EIO;
505 switch (urb->status) {
506 case -ECONNRESET:
507 case -ENOENT:
508 case -ESHUTDOWN:
509 /*
510 * no need to spew these errors when device
511 * removed or urb killed due to driver shutdown
512 */
513 status = -ECANCELED;
514 break;
515 default:
516 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
517 "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n",
518 __func__, pipe->logical_pipe_num,
519 pipe->ep_address, urb->status);
520 break;
521 }
522 goto cleanup_recv_urb;
523 }
524
525 if (urb->actual_length == 0)
526 goto cleanup_recv_urb;
527
528 skb = urb_context->skb;
529
530 /* we are going to pass it up */
531 urb_context->skb = NULL;
532 skb_put(skb, urb->actual_length);
533
534 /* note: queue implements a lock */
535 skb_queue_tail(&pipe->io_comp_queue, skb);
536 schedule_work(&pipe->io_complete_work);
537
538 cleanup_recv_urb:
539 ath6kl_usb_cleanup_recv_urb(urb_context);
540
541 if (status == 0 &&
542 pipe->urb_cnt >= pipe->urb_cnt_thresh) {
543 /* our free urbs are piling up, post more transfers */
544 ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE);
545 }
546 }
547
ath6kl_usb_usb_transmit_complete(struct urb * urb)548 static void ath6kl_usb_usb_transmit_complete(struct urb *urb)
549 {
550 struct ath6kl_urb_context *urb_context = urb->context;
551 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
552 struct sk_buff *skb;
553
554 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
555 "%s: pipe: %d, stat:%d, len:%d\n",
556 __func__, pipe->logical_pipe_num, urb->status,
557 urb->actual_length);
558
559 if (urb->status != 0) {
560 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
561 "%s: pipe: %d, failed:%d\n",
562 __func__, pipe->logical_pipe_num, urb->status);
563 }
564
565 skb = urb_context->skb;
566 urb_context->skb = NULL;
567 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
568
569 /* note: queue implements a lock */
570 skb_queue_tail(&pipe->io_comp_queue, skb);
571 schedule_work(&pipe->io_complete_work);
572 }
573
ath6kl_usb_io_comp_work(struct work_struct * work)574 static void ath6kl_usb_io_comp_work(struct work_struct *work)
575 {
576 struct ath6kl_usb_pipe *pipe = container_of(work,
577 struct ath6kl_usb_pipe,
578 io_complete_work);
579 struct ath6kl_usb *ar_usb;
580 struct sk_buff *skb;
581
582 ar_usb = pipe->ar_usb;
583
584 while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
585 if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) {
586 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
587 "ath6kl usb xmit callback buf:0x%p\n", skb);
588 ath6kl_core_tx_complete(ar_usb->ar, skb);
589 } else {
590 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
591 "ath6kl usb recv callback buf:0x%p\n", skb);
592 ath6kl_core_rx_complete(ar_usb->ar, skb,
593 pipe->logical_pipe_num);
594 }
595 }
596 }
597
598 #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
599 #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
600
ath6kl_usb_destroy(struct ath6kl_usb * ar_usb)601 static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
602 {
603 ath6kl_usb_flush_all(ar_usb);
604
605 ath6kl_usb_cleanup_pipe_resources(ar_usb);
606
607 usb_set_intfdata(ar_usb->interface, NULL);
608
609 kfree(ar_usb->diag_cmd_buffer);
610 kfree(ar_usb->diag_resp_buffer);
611
612 kfree(ar_usb);
613 }
614
ath6kl_usb_create(struct usb_interface * interface)615 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
616 {
617 struct usb_device *dev = interface_to_usbdev(interface);
618 struct ath6kl_usb *ar_usb;
619 struct ath6kl_usb_pipe *pipe;
620 int status = 0;
621 int i;
622
623 ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
624 if (ar_usb == NULL)
625 goto fail_ath6kl_usb_create;
626
627 usb_set_intfdata(interface, ar_usb);
628 spin_lock_init(&(ar_usb->cs_lock));
629 ar_usb->udev = dev;
630 ar_usb->interface = interface;
631
632 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
633 pipe = &ar_usb->pipes[i];
634 INIT_WORK(&pipe->io_complete_work,
635 ath6kl_usb_io_comp_work);
636 skb_queue_head_init(&pipe->io_comp_queue);
637 }
638
639 ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
640 if (ar_usb->diag_cmd_buffer == NULL) {
641 status = -ENOMEM;
642 goto fail_ath6kl_usb_create;
643 }
644
645 ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
646 GFP_KERNEL);
647 if (ar_usb->diag_resp_buffer == NULL) {
648 status = -ENOMEM;
649 goto fail_ath6kl_usb_create;
650 }
651
652 status = ath6kl_usb_setup_pipe_resources(ar_usb);
653
654 fail_ath6kl_usb_create:
655 if (status != 0) {
656 ath6kl_usb_destroy(ar_usb);
657 ar_usb = NULL;
658 }
659 return ar_usb;
660 }
661
ath6kl_usb_device_detached(struct usb_interface * interface)662 static void ath6kl_usb_device_detached(struct usb_interface *interface)
663 {
664 struct ath6kl_usb *ar_usb;
665
666 ar_usb = usb_get_intfdata(interface);
667 if (ar_usb == NULL)
668 return;
669
670 ath6kl_stop_txrx(ar_usb->ar);
671
672 /* Delay to wait for the target to reboot */
673 mdelay(20);
674 ath6kl_core_cleanup(ar_usb->ar);
675 ath6kl_usb_destroy(ar_usb);
676 }
677
678 /* exported hif usb APIs for htc pipe */
hif_start(struct ath6kl * ar)679 static void hif_start(struct ath6kl *ar)
680 {
681 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
682 int i;
683
684 ath6kl_usb_start_recv_pipes(device);
685
686 /* set the TX resource avail threshold for each TX pipe */
687 for (i = ATH6KL_USB_PIPE_TX_CTRL;
688 i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
689 device->pipes[i].urb_cnt_thresh =
690 device->pipes[i].urb_alloc / 2;
691 }
692 }
693
ath6kl_usb_send(struct ath6kl * ar,u8 PipeID,struct sk_buff * hdr_skb,struct sk_buff * skb)694 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
695 struct sk_buff *hdr_skb, struct sk_buff *skb)
696 {
697 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
698 struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
699 struct ath6kl_urb_context *urb_context;
700 int usb_status, status = 0;
701 struct urb *urb;
702 u8 *data;
703 u32 len;
704
705 ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
706 __func__, PipeID, skb);
707
708 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
709
710 if (urb_context == NULL) {
711 /*
712 * TODO: it is possible to run out of urbs if
713 * 2 endpoints map to the same pipe ID
714 */
715 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
716 "%s pipe:%d no urbs left. URB Cnt : %d\n",
717 __func__, PipeID, pipe->urb_cnt);
718 status = -ENOMEM;
719 goto fail_hif_send;
720 }
721
722 urb_context->skb = skb;
723
724 data = skb->data;
725 len = skb->len;
726
727 urb = usb_alloc_urb(0, GFP_ATOMIC);
728 if (urb == NULL) {
729 status = -ENOMEM;
730 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
731 urb_context);
732 goto fail_hif_send;
733 }
734
735 usb_fill_bulk_urb(urb,
736 device->udev,
737 pipe->usb_pipe_handle,
738 data,
739 len,
740 ath6kl_usb_usb_transmit_complete, urb_context);
741
742 if ((len % pipe->max_packet_size) == 0) {
743 /* hit a max packet boundary on this pipe */
744 urb->transfer_flags |= URB_ZERO_PACKET;
745 }
746
747 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
748 "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
749 pipe->logical_pipe_num, pipe->usb_pipe_handle,
750 pipe->ep_address, len);
751
752 usb_anchor_urb(urb, &pipe->urb_submitted);
753 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
754
755 if (usb_status) {
756 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
757 "ath6kl usb : usb bulk transmit failed %d\n",
758 usb_status);
759 usb_unanchor_urb(urb);
760 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
761 urb_context);
762 status = -EINVAL;
763 }
764 usb_free_urb(urb);
765
766 fail_hif_send:
767 return status;
768 }
769
hif_stop(struct ath6kl * ar)770 static void hif_stop(struct ath6kl *ar)
771 {
772 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
773
774 ath6kl_usb_flush_all(device);
775 }
776
ath6kl_usb_get_default_pipe(struct ath6kl * ar,u8 * ul_pipe,u8 * dl_pipe)777 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
778 u8 *ul_pipe, u8 *dl_pipe)
779 {
780 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
781 *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
782 }
783
ath6kl_usb_map_service_pipe(struct ath6kl * ar,u16 svc_id,u8 * ul_pipe,u8 * dl_pipe)784 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
785 u8 *ul_pipe, u8 *dl_pipe)
786 {
787 int status = 0;
788
789 switch (svc_id) {
790 case HTC_CTRL_RSVD_SVC:
791 case WMI_CONTROL_SVC:
792 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
793 /* due to large control packets, shift to data pipe */
794 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
795 break;
796 case WMI_DATA_BE_SVC:
797 case WMI_DATA_BK_SVC:
798 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
799 /*
800 * Disable rxdata2 directly, it will be enabled
801 * if FW enable rxdata2
802 */
803 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
804 break;
805 case WMI_DATA_VI_SVC:
806
807 if (ar->hw.flags & ATH6KL_HW_MAP_LP_ENDPOINT)
808 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
809 else
810 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
811 /*
812 * Disable rxdata2 directly, it will be enabled
813 * if FW enable rxdata2
814 */
815 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
816 break;
817 case WMI_DATA_VO_SVC:
818
819 if (ar->hw.flags & ATH6KL_HW_MAP_LP_ENDPOINT)
820 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
821 else
822 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
823 /*
824 * Disable rxdata2 directly, it will be enabled
825 * if FW enable rxdata2
826 */
827 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
828 break;
829 default:
830 status = -EPERM;
831 break;
832 }
833
834 return status;
835 }
836
ath6kl_usb_get_free_queue_number(struct ath6kl * ar,u8 pipe_id)837 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
838 {
839 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
840
841 return device->pipes[pipe_id].urb_cnt;
842 }
843
hif_detach_htc(struct ath6kl * ar)844 static void hif_detach_htc(struct ath6kl *ar)
845 {
846 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
847
848 ath6kl_usb_flush_all(device);
849 }
850
ath6kl_usb_submit_ctrl_out(struct ath6kl_usb * ar_usb,u8 req,u16 value,u16 index,void * data,u32 size)851 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
852 u8 req, u16 value, u16 index, void *data,
853 u32 size)
854 {
855 u8 *buf = NULL;
856 int ret;
857
858 if (size > 0) {
859 buf = kmemdup(data, size, GFP_KERNEL);
860 if (buf == NULL)
861 return -ENOMEM;
862 }
863
864 /* note: if successful returns number of bytes transfered */
865 ret = usb_control_msg(ar_usb->udev,
866 usb_sndctrlpipe(ar_usb->udev, 0),
867 req,
868 USB_DIR_OUT | USB_TYPE_VENDOR |
869 USB_RECIP_DEVICE, value, index, buf,
870 size, 1000);
871
872 if (ret < 0) {
873 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
874 kfree(buf);
875 return ret;
876 }
877
878 kfree(buf);
879
880 return 0;
881 }
882
ath6kl_usb_submit_ctrl_in(struct ath6kl_usb * ar_usb,u8 req,u16 value,u16 index,void * data,u32 size)883 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
884 u8 req, u16 value, u16 index, void *data,
885 u32 size)
886 {
887 u8 *buf = NULL;
888 int ret;
889
890 if (size > 0) {
891 buf = kmalloc(size, GFP_KERNEL);
892 if (buf == NULL)
893 return -ENOMEM;
894 }
895
896 /* note: if successful returns number of bytes transfered */
897 ret = usb_control_msg(ar_usb->udev,
898 usb_rcvctrlpipe(ar_usb->udev, 0),
899 req,
900 USB_DIR_IN | USB_TYPE_VENDOR |
901 USB_RECIP_DEVICE, value, index, buf,
902 size, 2 * HZ);
903
904 if (ret < 0) {
905 ath6kl_warn("Failed to read usb control message: %d\n", ret);
906 kfree(buf);
907 return ret;
908 }
909
910 memcpy((u8 *) data, buf, size);
911
912 kfree(buf);
913
914 return 0;
915 }
916
ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb * ar_usb,u8 req_val,u8 * req_buf,u32 req_len,u8 resp_val,u8 * resp_buf,u32 * resp_len)917 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
918 u8 req_val, u8 *req_buf, u32 req_len,
919 u8 resp_val, u8 *resp_buf, u32 *resp_len)
920 {
921 int ret;
922
923 /* send command */
924 ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
925 req_buf, req_len);
926
927 if (ret != 0)
928 return ret;
929
930 if (resp_buf == NULL) {
931 /* no expected response */
932 return ret;
933 }
934
935 /* get response */
936 ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
937 resp_buf, *resp_len);
938
939 return ret;
940 }
941
ath6kl_usb_diag_read32(struct ath6kl * ar,u32 address,u32 * data)942 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
943 {
944 struct ath6kl_usb *ar_usb = ar->hif_priv;
945 struct ath6kl_usb_ctrl_diag_resp_read *resp;
946 struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
947 u32 resp_len;
948 int ret;
949
950 cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
951
952 memset(cmd, 0, sizeof(*cmd));
953 cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
954 cmd->address = cpu_to_le32(address);
955 resp_len = sizeof(*resp);
956
957 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
958 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
959 (u8 *) cmd,
960 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
961 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
962 ar_usb->diag_resp_buffer, &resp_len);
963
964 if (ret) {
965 ath6kl_warn("diag read32 failed: %d\n", ret);
966 return ret;
967 }
968
969 resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
970 ar_usb->diag_resp_buffer;
971
972 *data = le32_to_cpu(resp->value);
973
974 return ret;
975 }
976
ath6kl_usb_diag_write32(struct ath6kl * ar,u32 address,__le32 data)977 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
978 {
979 struct ath6kl_usb *ar_usb = ar->hif_priv;
980 struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
981 int ret;
982
983 cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
984
985 memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
986 cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
987 cmd->address = cpu_to_le32(address);
988 cmd->value = data;
989
990 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
991 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
992 (u8 *) cmd,
993 sizeof(*cmd),
994 0, NULL, NULL);
995 if (ret) {
996 ath6kl_warn("diag_write32 failed: %d\n", ret);
997 return ret;
998 }
999
1000 return 0;
1001 }
1002
ath6kl_usb_bmi_read(struct ath6kl * ar,u8 * buf,u32 len)1003 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1004 {
1005 struct ath6kl_usb *ar_usb = ar->hif_priv;
1006 int ret;
1007
1008 /* get response */
1009 ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1010 ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1011 0, 0, buf, len);
1012 if (ret) {
1013 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1014 ret);
1015 return ret;
1016 }
1017
1018 return 0;
1019 }
1020
ath6kl_usb_bmi_write(struct ath6kl * ar,u8 * buf,u32 len)1021 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1022 {
1023 struct ath6kl_usb *ar_usb = ar->hif_priv;
1024 int ret;
1025
1026 /* send command */
1027 ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1028 ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1029 0, 0, buf, len);
1030 if (ret) {
1031 ath6kl_err("unable to send the bmi data to the device: %d\n",
1032 ret);
1033 return ret;
1034 }
1035
1036 return 0;
1037 }
1038
ath6kl_usb_power_on(struct ath6kl * ar)1039 static int ath6kl_usb_power_on(struct ath6kl *ar)
1040 {
1041 hif_start(ar);
1042 return 0;
1043 }
1044
ath6kl_usb_power_off(struct ath6kl * ar)1045 static int ath6kl_usb_power_off(struct ath6kl *ar)
1046 {
1047 hif_detach_htc(ar);
1048 return 0;
1049 }
1050
ath6kl_usb_stop(struct ath6kl * ar)1051 static void ath6kl_usb_stop(struct ath6kl *ar)
1052 {
1053 hif_stop(ar);
1054 }
1055
ath6kl_usb_cleanup_scatter(struct ath6kl * ar)1056 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1057 {
1058 /*
1059 * USB doesn't support it. Just return.
1060 */
1061 return;
1062 }
1063
1064 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1065 .diag_read32 = ath6kl_usb_diag_read32,
1066 .diag_write32 = ath6kl_usb_diag_write32,
1067 .bmi_read = ath6kl_usb_bmi_read,
1068 .bmi_write = ath6kl_usb_bmi_write,
1069 .power_on = ath6kl_usb_power_on,
1070 .power_off = ath6kl_usb_power_off,
1071 .stop = ath6kl_usb_stop,
1072 .pipe_send = ath6kl_usb_send,
1073 .pipe_get_default = ath6kl_usb_get_default_pipe,
1074 .pipe_map_service = ath6kl_usb_map_service_pipe,
1075 .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1076 .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1077 };
1078
1079 /* ath6kl usb driver registered functions */
ath6kl_usb_probe(struct usb_interface * interface,const struct usb_device_id * id)1080 static int ath6kl_usb_probe(struct usb_interface *interface,
1081 const struct usb_device_id *id)
1082 {
1083 struct usb_device *dev = interface_to_usbdev(interface);
1084 struct ath6kl *ar;
1085 struct ath6kl_usb *ar_usb = NULL;
1086 int vendor_id, product_id;
1087 int ret = 0;
1088
1089 usb_get_dev(dev);
1090
1091 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1092 product_id = le16_to_cpu(dev->descriptor.idProduct);
1093
1094 ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1095 ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1096
1097 if (interface->cur_altsetting)
1098 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1099 interface->cur_altsetting->desc.bInterfaceNumber);
1100
1101
1102 if (dev->speed == USB_SPEED_HIGH)
1103 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1104 else
1105 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1106
1107 ar_usb = ath6kl_usb_create(interface);
1108
1109 if (ar_usb == NULL) {
1110 ret = -ENOMEM;
1111 goto err_usb_put;
1112 }
1113
1114 ar = ath6kl_core_create(&ar_usb->udev->dev);
1115 if (ar == NULL) {
1116 ath6kl_err("Failed to alloc ath6kl core\n");
1117 ret = -ENOMEM;
1118 goto err_usb_destroy;
1119 }
1120
1121 ar->hif_priv = ar_usb;
1122 ar->hif_type = ATH6KL_HIF_TYPE_USB;
1123 ar->hif_ops = &ath6kl_usb_ops;
1124 ar->mbox_info.block_size = 16;
1125 ar->bmi.max_data_size = 252;
1126
1127 ar_usb->ar = ar;
1128
1129 ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1130 if (ret) {
1131 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1132 goto err_core_free;
1133 }
1134
1135 return ret;
1136
1137 err_core_free:
1138 ath6kl_core_destroy(ar);
1139 err_usb_destroy:
1140 ath6kl_usb_destroy(ar_usb);
1141 err_usb_put:
1142 usb_put_dev(dev);
1143
1144 return ret;
1145 }
1146
ath6kl_usb_remove(struct usb_interface * interface)1147 static void ath6kl_usb_remove(struct usb_interface *interface)
1148 {
1149 usb_put_dev(interface_to_usbdev(interface));
1150 ath6kl_usb_device_detached(interface);
1151 }
1152
1153 #ifdef CONFIG_PM
1154
ath6kl_usb_suspend(struct usb_interface * interface,pm_message_t message)1155 static int ath6kl_usb_suspend(struct usb_interface *interface,
1156 pm_message_t message)
1157 {
1158 struct ath6kl_usb *device;
1159 device = usb_get_intfdata(interface);
1160
1161 ath6kl_usb_flush_all(device);
1162 return 0;
1163 }
1164
ath6kl_usb_resume(struct usb_interface * interface)1165 static int ath6kl_usb_resume(struct usb_interface *interface)
1166 {
1167 struct ath6kl_usb *device;
1168 device = usb_get_intfdata(interface);
1169
1170 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1171 ATH6KL_USB_RX_BUFFER_SIZE);
1172 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1173 ATH6KL_USB_RX_BUFFER_SIZE);
1174
1175 return 0;
1176 }
1177
ath6kl_usb_reset_resume(struct usb_interface * intf)1178 static int ath6kl_usb_reset_resume(struct usb_interface *intf)
1179 {
1180 if (usb_get_intfdata(intf))
1181 ath6kl_usb_remove(intf);
1182 return 0;
1183 }
1184
1185 #else
1186
1187 #define ath6kl_usb_suspend NULL
1188 #define ath6kl_usb_resume NULL
1189 #define ath6kl_usb_reset_resume NULL
1190
1191 #endif
1192
1193 /* table of devices that work with this driver */
1194 static struct usb_device_id ath6kl_usb_ids[] = {
1195 {USB_DEVICE(0x0cf3, 0x9374)},
1196 { /* Terminating entry */ },
1197 };
1198
1199 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1200
1201 static struct usb_driver ath6kl_usb_driver = {
1202 .name = "ath6kl_usb",
1203 .probe = ath6kl_usb_probe,
1204 .suspend = ath6kl_usb_suspend,
1205 .resume = ath6kl_usb_resume,
1206 .reset_resume = ath6kl_usb_reset_resume,
1207 .disconnect = ath6kl_usb_remove,
1208 .id_table = ath6kl_usb_ids,
1209 .supports_autosuspend = true,
1210 .disable_hub_initiated_lpm = 1,
1211 };
1212
ath6kl_usb_init(void)1213 static int ath6kl_usb_init(void)
1214 {
1215 int ret;
1216
1217 ret = usb_register(&ath6kl_usb_driver);
1218 if (ret) {
1219 ath6kl_err("usb registration failed: %d\n", ret);
1220 return ret;
1221 }
1222
1223 return 0;
1224 }
1225
ath6kl_usb_exit(void)1226 static void ath6kl_usb_exit(void)
1227 {
1228 usb_deregister(&ath6kl_usb_driver);
1229 }
1230
1231 module_init(ath6kl_usb_init);
1232 module_exit(ath6kl_usb_exit);
1233
1234 MODULE_AUTHOR("Atheros Communications, Inc.");
1235 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1236 MODULE_LICENSE("Dual BSD/GPL");
1237 MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
1238 MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
1239 MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
1240 MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
1241 MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
1242 MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
1243 MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE);
1244 MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
1245 MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
1246 MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
1247 MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
1248 MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);
1249