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 4096
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 struct workqueue_struct *wq;
75 };
76
77 /* usb urb object */
78 struct ath6kl_urb_context {
79 struct list_head link;
80 struct ath6kl_usb_pipe *pipe;
81 struct sk_buff *skb;
82 struct ath6kl *ar;
83 };
84
85 /* USB endpoint definitions */
86 #define ATH6KL_USB_EP_ADDR_APP_CTRL_IN 0x81
87 #define ATH6KL_USB_EP_ADDR_APP_DATA_IN 0x82
88 #define ATH6KL_USB_EP_ADDR_APP_DATA2_IN 0x83
89 #define ATH6KL_USB_EP_ADDR_APP_INT_IN 0x84
90
91 #define ATH6KL_USB_EP_ADDR_APP_CTRL_OUT 0x01
92 #define ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT 0x02
93 #define ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT 0x03
94 #define ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT 0x04
95
96 /* diagnostic command defnitions */
97 #define ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD 1
98 #define ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP 2
99 #define ATH6KL_USB_CONTROL_REQ_DIAG_CMD 3
100 #define ATH6KL_USB_CONTROL_REQ_DIAG_RESP 4
101
102 #define ATH6KL_USB_CTRL_DIAG_CC_READ 0
103 #define ATH6KL_USB_CTRL_DIAG_CC_WRITE 1
104
105 struct ath6kl_usb_ctrl_diag_cmd_write {
106 __le32 cmd;
107 __le32 address;
108 __le32 value;
109 __le32 _pad[1];
110 } __packed;
111
112 struct ath6kl_usb_ctrl_diag_cmd_read {
113 __le32 cmd;
114 __le32 address;
115 } __packed;
116
117 struct ath6kl_usb_ctrl_diag_resp_read {
118 __le32 value;
119 } __packed;
120
121 /* function declarations */
122 static void ath6kl_usb_recv_complete(struct urb *urb);
123
124 #define ATH6KL_USB_IS_BULK_EP(attr) (((attr) & 3) == 0x02)
125 #define ATH6KL_USB_IS_INT_EP(attr) (((attr) & 3) == 0x03)
126 #define ATH6KL_USB_IS_ISOC_EP(attr) (((attr) & 3) == 0x01)
127 #define ATH6KL_USB_IS_DIR_IN(addr) ((addr) & 0x80)
128
129 /* pipe/urb operations */
130 static struct ath6kl_urb_context *
ath6kl_usb_alloc_urb_from_pipe(struct ath6kl_usb_pipe * pipe)131 ath6kl_usb_alloc_urb_from_pipe(struct ath6kl_usb_pipe *pipe)
132 {
133 struct ath6kl_urb_context *urb_context = NULL;
134 unsigned long flags;
135
136 /* bail if this pipe is not initialized */
137 if (!pipe->ar_usb)
138 return NULL;
139
140 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
141 if (!list_empty(&pipe->urb_list_head)) {
142 urb_context =
143 list_first_entry(&pipe->urb_list_head,
144 struct ath6kl_urb_context, link);
145 list_del(&urb_context->link);
146 pipe->urb_cnt--;
147 }
148 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
149
150 return urb_context;
151 }
152
ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe * pipe,struct ath6kl_urb_context * urb_context)153 static void ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe *pipe,
154 struct ath6kl_urb_context *urb_context)
155 {
156 unsigned long flags;
157
158 /* bail if this pipe is not initialized */
159 if (!pipe->ar_usb)
160 return;
161
162 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
163 pipe->urb_cnt++;
164
165 list_add(&urb_context->link, &pipe->urb_list_head);
166 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
167 }
168
ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context * urb_context)169 static void ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context *urb_context)
170 {
171 dev_kfree_skb(urb_context->skb);
172 urb_context->skb = NULL;
173
174 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
175 }
176
ath6kl_usb_priv(struct ath6kl * ar)177 static inline struct ath6kl_usb *ath6kl_usb_priv(struct ath6kl *ar)
178 {
179 return ar->hif_priv;
180 }
181
182 /* pipe resource allocation/cleanup */
ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe * pipe,int urb_cnt)183 static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe,
184 int urb_cnt)
185 {
186 struct ath6kl_urb_context *urb_context;
187 int status = 0, i;
188
189 INIT_LIST_HEAD(&pipe->urb_list_head);
190 init_usb_anchor(&pipe->urb_submitted);
191
192 for (i = 0; i < urb_cnt; i++) {
193 urb_context = kzalloc(sizeof(struct ath6kl_urb_context),
194 GFP_KERNEL);
195 if (urb_context == NULL) {
196 status = -ENOMEM;
197 goto fail_alloc_pipe_resources;
198 }
199
200 urb_context->pipe = pipe;
201
202 /*
203 * we are only allocate the urb contexts here, the actual URB
204 * is allocated from the kernel as needed to do a transaction
205 */
206 pipe->urb_alloc++;
207 ath6kl_usb_free_urb_to_pipe(pipe, urb_context);
208 }
209
210 ath6kl_dbg(ATH6KL_DBG_USB,
211 "ath6kl usb: alloc resources lpipe:%d hpipe:0x%X urbs:%d\n",
212 pipe->logical_pipe_num, pipe->usb_pipe_handle,
213 pipe->urb_alloc);
214
215 fail_alloc_pipe_resources:
216 return status;
217 }
218
ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe * pipe)219 static void ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe *pipe)
220 {
221 struct ath6kl_urb_context *urb_context;
222
223 if (pipe->ar_usb == NULL) {
224 /* nothing allocated for this pipe */
225 return;
226 }
227
228 ath6kl_dbg(ATH6KL_DBG_USB,
229 "ath6kl usb: free resources lpipe:%d"
230 "hpipe:0x%X urbs:%d avail:%d\n",
231 pipe->logical_pipe_num, pipe->usb_pipe_handle,
232 pipe->urb_alloc, pipe->urb_cnt);
233
234 if (pipe->urb_alloc != pipe->urb_cnt) {
235 ath6kl_dbg(ATH6KL_DBG_USB,
236 "ath6kl usb: urb leak! lpipe:%d"
237 "hpipe:0x%X urbs:%d avail:%d\n",
238 pipe->logical_pipe_num, pipe->usb_pipe_handle,
239 pipe->urb_alloc, pipe->urb_cnt);
240 }
241
242 while (true) {
243 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
244 if (urb_context == NULL)
245 break;
246 kfree(urb_context);
247 }
248 }
249
ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb * ar_usb)250 static void ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb *ar_usb)
251 {
252 int i;
253
254 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++)
255 ath6kl_usb_free_pipe_resources(&ar_usb->pipes[i]);
256 }
257
ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb * ar_usb,u8 ep_address,int * urb_count)258 static u8 ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb *ar_usb,
259 u8 ep_address, int *urb_count)
260 {
261 u8 pipe_num = ATH6KL_USB_PIPE_INVALID;
262
263 switch (ep_address) {
264 case ATH6KL_USB_EP_ADDR_APP_CTRL_IN:
265 pipe_num = ATH6KL_USB_PIPE_RX_CTRL;
266 *urb_count = RX_URB_COUNT;
267 break;
268 case ATH6KL_USB_EP_ADDR_APP_DATA_IN:
269 pipe_num = ATH6KL_USB_PIPE_RX_DATA;
270 *urb_count = RX_URB_COUNT;
271 break;
272 case ATH6KL_USB_EP_ADDR_APP_INT_IN:
273 pipe_num = ATH6KL_USB_PIPE_RX_INT;
274 *urb_count = RX_URB_COUNT;
275 break;
276 case ATH6KL_USB_EP_ADDR_APP_DATA2_IN:
277 pipe_num = ATH6KL_USB_PIPE_RX_DATA2;
278 *urb_count = RX_URB_COUNT;
279 break;
280 case ATH6KL_USB_EP_ADDR_APP_CTRL_OUT:
281 pipe_num = ATH6KL_USB_PIPE_TX_CTRL;
282 *urb_count = TX_URB_COUNT;
283 break;
284 case ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT:
285 pipe_num = ATH6KL_USB_PIPE_TX_DATA_LP;
286 *urb_count = TX_URB_COUNT;
287 break;
288 case ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT:
289 pipe_num = ATH6KL_USB_PIPE_TX_DATA_MP;
290 *urb_count = TX_URB_COUNT;
291 break;
292 case ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT:
293 pipe_num = ATH6KL_USB_PIPE_TX_DATA_HP;
294 *urb_count = TX_URB_COUNT;
295 break;
296 default:
297 /* note: there may be endpoints not currently used */
298 break;
299 }
300
301 return pipe_num;
302 }
303
ath6kl_usb_setup_pipe_resources(struct ath6kl_usb * ar_usb)304 static int ath6kl_usb_setup_pipe_resources(struct ath6kl_usb *ar_usb)
305 {
306 struct usb_interface *interface = ar_usb->interface;
307 struct usb_host_interface *iface_desc = interface->cur_altsetting;
308 struct usb_endpoint_descriptor *endpoint;
309 struct ath6kl_usb_pipe *pipe;
310 int i, urbcount, status = 0;
311 u8 pipe_num;
312
313 ath6kl_dbg(ATH6KL_DBG_USB, "setting up USB Pipes using interface\n");
314
315 /* walk descriptors and setup pipes */
316 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
317 endpoint = &iface_desc->endpoint[i].desc;
318
319 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
320 ath6kl_dbg(ATH6KL_DBG_USB,
321 "%s Bulk Ep:0x%2.2X maxpktsz:%d\n",
322 ATH6KL_USB_IS_DIR_IN
323 (endpoint->bEndpointAddress) ?
324 "RX" : "TX", endpoint->bEndpointAddress,
325 le16_to_cpu(endpoint->wMaxPacketSize));
326 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
327 ath6kl_dbg(ATH6KL_DBG_USB,
328 "%s Int Ep:0x%2.2X maxpktsz:%d interval:%d\n",
329 ATH6KL_USB_IS_DIR_IN
330 (endpoint->bEndpointAddress) ?
331 "RX" : "TX", endpoint->bEndpointAddress,
332 le16_to_cpu(endpoint->wMaxPacketSize),
333 endpoint->bInterval);
334 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
335 /* TODO for ISO */
336 ath6kl_dbg(ATH6KL_DBG_USB,
337 "%s ISOC Ep:0x%2.2X maxpktsz:%d interval:%d\n",
338 ATH6KL_USB_IS_DIR_IN
339 (endpoint->bEndpointAddress) ?
340 "RX" : "TX", endpoint->bEndpointAddress,
341 le16_to_cpu(endpoint->wMaxPacketSize),
342 endpoint->bInterval);
343 }
344
345 /* Ignore broken descriptors. */
346 if (usb_endpoint_maxp(endpoint) == 0)
347 continue;
348
349 urbcount = 0;
350
351 pipe_num =
352 ath6kl_usb_get_logical_pipe_num(ar_usb,
353 endpoint->bEndpointAddress,
354 &urbcount);
355 if (pipe_num == ATH6KL_USB_PIPE_INVALID)
356 continue;
357
358 pipe = &ar_usb->pipes[pipe_num];
359 if (pipe->ar_usb != NULL) {
360 /* hmmm..pipe was already setup */
361 continue;
362 }
363
364 pipe->ar_usb = ar_usb;
365 pipe->logical_pipe_num = pipe_num;
366 pipe->ep_address = endpoint->bEndpointAddress;
367 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
368
369 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
370 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
371 pipe->usb_pipe_handle =
372 usb_rcvbulkpipe(ar_usb->udev,
373 pipe->ep_address);
374 } else {
375 pipe->usb_pipe_handle =
376 usb_sndbulkpipe(ar_usb->udev,
377 pipe->ep_address);
378 }
379 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
380 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
381 pipe->usb_pipe_handle =
382 usb_rcvintpipe(ar_usb->udev,
383 pipe->ep_address);
384 } else {
385 pipe->usb_pipe_handle =
386 usb_sndintpipe(ar_usb->udev,
387 pipe->ep_address);
388 }
389 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
390 /* TODO for ISO */
391 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
392 pipe->usb_pipe_handle =
393 usb_rcvisocpipe(ar_usb->udev,
394 pipe->ep_address);
395 } else {
396 pipe->usb_pipe_handle =
397 usb_sndisocpipe(ar_usb->udev,
398 pipe->ep_address);
399 }
400 }
401
402 pipe->ep_desc = endpoint;
403
404 if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address))
405 pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX;
406
407 status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount);
408 if (status != 0)
409 break;
410 }
411
412 return status;
413 }
414
415 /* pipe operations */
ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe * recv_pipe,int buffer_length)416 static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe,
417 int buffer_length)
418 {
419 struct ath6kl_urb_context *urb_context;
420 struct urb *urb;
421 int usb_status;
422
423 while (true) {
424 urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe);
425 if (urb_context == NULL)
426 break;
427
428 urb_context->skb = dev_alloc_skb(buffer_length);
429 if (urb_context->skb == NULL)
430 goto err_cleanup_urb;
431
432 urb = usb_alloc_urb(0, GFP_ATOMIC);
433 if (urb == NULL)
434 goto err_cleanup_urb;
435
436 usb_fill_bulk_urb(urb,
437 recv_pipe->ar_usb->udev,
438 recv_pipe->usb_pipe_handle,
439 urb_context->skb->data,
440 buffer_length,
441 ath6kl_usb_recv_complete, urb_context);
442
443 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
444 "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n",
445 recv_pipe->logical_pipe_num,
446 recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
447 buffer_length, urb_context->skb);
448
449 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
450 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
451
452 if (usb_status) {
453 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
454 "ath6kl usb : usb bulk recv failed %d\n",
455 usb_status);
456 usb_unanchor_urb(urb);
457 usb_free_urb(urb);
458 goto err_cleanup_urb;
459 }
460 usb_free_urb(urb);
461 }
462 return;
463
464 err_cleanup_urb:
465 ath6kl_usb_cleanup_recv_urb(urb_context);
466 return;
467 }
468
ath6kl_usb_flush_all(struct ath6kl_usb * ar_usb)469 static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb)
470 {
471 int i;
472
473 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
474 if (ar_usb->pipes[i].ar_usb != NULL)
475 usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
476 }
477
478 /*
479 * Flushing any pending I/O may schedule work this call will block
480 * until all scheduled work runs to completion.
481 */
482 flush_workqueue(ar_usb->wq);
483 }
484
ath6kl_usb_start_recv_pipes(struct ath6kl_usb * ar_usb)485 static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb)
486 {
487 /*
488 * note: control pipe is no longer used
489 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh =
490 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2;
491 * ath6kl_usb_post_recv_transfers(&ar_usb->
492 * pipes[ATH6KL_USB_PIPE_RX_CTRL],
493 * ATH6KL_USB_RX_BUFFER_SIZE);
494 */
495
496 ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh = 1;
497
498 ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA],
499 ATH6KL_USB_RX_BUFFER_SIZE);
500 }
501
502 /* hif usb rx/tx completion functions */
ath6kl_usb_recv_complete(struct urb * urb)503 static void ath6kl_usb_recv_complete(struct urb *urb)
504 {
505 struct ath6kl_urb_context *urb_context = urb->context;
506 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
507 struct sk_buff *skb = NULL;
508 int status = 0;
509
510 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
511 "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__,
512 pipe->logical_pipe_num, urb->status, urb->actual_length,
513 urb);
514
515 if (urb->status != 0) {
516 status = -EIO;
517 switch (urb->status) {
518 case -ECONNRESET:
519 case -ENOENT:
520 case -ESHUTDOWN:
521 /*
522 * no need to spew these errors when device
523 * removed or urb killed due to driver shutdown
524 */
525 status = -ECANCELED;
526 break;
527 default:
528 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
529 "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n",
530 __func__, pipe->logical_pipe_num,
531 pipe->ep_address, urb->status);
532 break;
533 }
534 goto cleanup_recv_urb;
535 }
536
537 if (urb->actual_length == 0)
538 goto cleanup_recv_urb;
539
540 skb = urb_context->skb;
541
542 /* we are going to pass it up */
543 urb_context->skb = NULL;
544 skb_put(skb, urb->actual_length);
545
546 /* note: queue implements a lock */
547 skb_queue_tail(&pipe->io_comp_queue, skb);
548 queue_work(pipe->ar_usb->wq, &pipe->io_complete_work);
549
550 cleanup_recv_urb:
551 ath6kl_usb_cleanup_recv_urb(urb_context);
552
553 if (status == 0 &&
554 pipe->urb_cnt >= pipe->urb_cnt_thresh) {
555 /* our free urbs are piling up, post more transfers */
556 ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE);
557 }
558 }
559
ath6kl_usb_usb_transmit_complete(struct urb * urb)560 static void ath6kl_usb_usb_transmit_complete(struct urb *urb)
561 {
562 struct ath6kl_urb_context *urb_context = urb->context;
563 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
564 struct sk_buff *skb;
565
566 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
567 "%s: pipe: %d, stat:%d, len:%d\n",
568 __func__, pipe->logical_pipe_num, urb->status,
569 urb->actual_length);
570
571 if (urb->status != 0) {
572 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
573 "%s: pipe: %d, failed:%d\n",
574 __func__, pipe->logical_pipe_num, urb->status);
575 }
576
577 skb = urb_context->skb;
578 urb_context->skb = NULL;
579 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
580
581 /* note: queue implements a lock */
582 skb_queue_tail(&pipe->io_comp_queue, skb);
583 queue_work(pipe->ar_usb->wq, &pipe->io_complete_work);
584 }
585
ath6kl_usb_io_comp_work(struct work_struct * work)586 static void ath6kl_usb_io_comp_work(struct work_struct *work)
587 {
588 struct ath6kl_usb_pipe *pipe = container_of(work,
589 struct ath6kl_usb_pipe,
590 io_complete_work);
591 struct ath6kl_usb *ar_usb;
592 struct sk_buff *skb;
593
594 ar_usb = pipe->ar_usb;
595
596 while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
597 if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) {
598 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
599 "ath6kl usb xmit callback buf:0x%p\n", skb);
600 ath6kl_core_tx_complete(ar_usb->ar, skb);
601 } else {
602 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
603 "ath6kl usb recv callback buf:0x%p\n", skb);
604 ath6kl_core_rx_complete(ar_usb->ar, skb,
605 pipe->logical_pipe_num);
606 }
607 }
608 }
609
610 #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
611 #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
612
ath6kl_usb_destroy(struct ath6kl_usb * ar_usb)613 static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
614 {
615 ath6kl_usb_flush_all(ar_usb);
616
617 ath6kl_usb_cleanup_pipe_resources(ar_usb);
618
619 usb_set_intfdata(ar_usb->interface, NULL);
620
621 kfree(ar_usb->diag_cmd_buffer);
622 kfree(ar_usb->diag_resp_buffer);
623 destroy_workqueue(ar_usb->wq);
624
625 kfree(ar_usb);
626 }
627
ath6kl_usb_create(struct usb_interface * interface)628 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
629 {
630 struct usb_device *dev = interface_to_usbdev(interface);
631 struct ath6kl_usb *ar_usb;
632 struct ath6kl_usb_pipe *pipe;
633 int status = 0;
634 int i;
635
636 /* ath6kl_usb_destroy() needs ar_usb != NULL && ar_usb->wq != NULL. */
637 ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
638 if (ar_usb == NULL)
639 return NULL;
640 ar_usb->wq = alloc_workqueue("ath6kl_wq", 0, 0);
641 if (!ar_usb->wq) {
642 kfree(ar_usb);
643 return NULL;
644 }
645
646 usb_set_intfdata(interface, ar_usb);
647 spin_lock_init(&(ar_usb->cs_lock));
648 ar_usb->udev = dev;
649 ar_usb->interface = interface;
650
651 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
652 pipe = &ar_usb->pipes[i];
653 INIT_WORK(&pipe->io_complete_work,
654 ath6kl_usb_io_comp_work);
655 skb_queue_head_init(&pipe->io_comp_queue);
656 }
657
658 ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
659 if (ar_usb->diag_cmd_buffer == NULL) {
660 status = -ENOMEM;
661 goto fail_ath6kl_usb_create;
662 }
663
664 ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
665 GFP_KERNEL);
666 if (ar_usb->diag_resp_buffer == NULL) {
667 status = -ENOMEM;
668 goto fail_ath6kl_usb_create;
669 }
670
671 status = ath6kl_usb_setup_pipe_resources(ar_usb);
672
673 fail_ath6kl_usb_create:
674 if (status != 0) {
675 ath6kl_usb_destroy(ar_usb);
676 ar_usb = NULL;
677 }
678 return ar_usb;
679 }
680
ath6kl_usb_device_detached(struct usb_interface * interface)681 static void ath6kl_usb_device_detached(struct usb_interface *interface)
682 {
683 struct ath6kl_usb *ar_usb;
684
685 ar_usb = usb_get_intfdata(interface);
686 if (ar_usb == NULL)
687 return;
688
689 ath6kl_stop_txrx(ar_usb->ar);
690
691 /* Delay to wait for the target to reboot */
692 mdelay(20);
693 ath6kl_core_cleanup(ar_usb->ar);
694 ath6kl_usb_destroy(ar_usb);
695 }
696
697 /* exported hif usb APIs for htc pipe */
hif_start(struct ath6kl * ar)698 static void hif_start(struct ath6kl *ar)
699 {
700 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
701 int i;
702
703 ath6kl_usb_start_recv_pipes(device);
704
705 /* set the TX resource avail threshold for each TX pipe */
706 for (i = ATH6KL_USB_PIPE_TX_CTRL;
707 i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
708 device->pipes[i].urb_cnt_thresh =
709 device->pipes[i].urb_alloc / 2;
710 }
711 }
712
ath6kl_usb_send(struct ath6kl * ar,u8 PipeID,struct sk_buff * hdr_skb,struct sk_buff * skb)713 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
714 struct sk_buff *hdr_skb, struct sk_buff *skb)
715 {
716 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
717 struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
718 struct ath6kl_urb_context *urb_context;
719 int usb_status, status = 0;
720 struct urb *urb;
721 u8 *data;
722 u32 len;
723
724 ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
725 __func__, PipeID, skb);
726
727 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
728
729 if (urb_context == NULL) {
730 /*
731 * TODO: it is possible to run out of urbs if
732 * 2 endpoints map to the same pipe ID
733 */
734 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
735 "%s pipe:%d no urbs left. URB Cnt : %d\n",
736 __func__, PipeID, pipe->urb_cnt);
737 status = -ENOMEM;
738 goto fail_hif_send;
739 }
740
741 urb_context->skb = skb;
742
743 data = skb->data;
744 len = skb->len;
745
746 urb = usb_alloc_urb(0, GFP_ATOMIC);
747 if (urb == NULL) {
748 status = -ENOMEM;
749 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
750 urb_context);
751 goto fail_hif_send;
752 }
753
754 usb_fill_bulk_urb(urb,
755 device->udev,
756 pipe->usb_pipe_handle,
757 data,
758 len,
759 ath6kl_usb_usb_transmit_complete, urb_context);
760
761 if ((len % pipe->max_packet_size) == 0) {
762 /* hit a max packet boundary on this pipe */
763 urb->transfer_flags |= URB_ZERO_PACKET;
764 }
765
766 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
767 "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
768 pipe->logical_pipe_num, pipe->usb_pipe_handle,
769 pipe->ep_address, len);
770
771 usb_anchor_urb(urb, &pipe->urb_submitted);
772 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
773
774 if (usb_status) {
775 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
776 "ath6kl usb : usb bulk transmit failed %d\n",
777 usb_status);
778 usb_unanchor_urb(urb);
779 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
780 urb_context);
781 status = -EINVAL;
782 }
783 usb_free_urb(urb);
784
785 fail_hif_send:
786 return status;
787 }
788
hif_stop(struct ath6kl * ar)789 static void hif_stop(struct ath6kl *ar)
790 {
791 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
792
793 ath6kl_usb_flush_all(device);
794 }
795
ath6kl_usb_get_default_pipe(struct ath6kl * ar,u8 * ul_pipe,u8 * dl_pipe)796 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
797 u8 *ul_pipe, u8 *dl_pipe)
798 {
799 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
800 *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
801 }
802
ath6kl_usb_map_service_pipe(struct ath6kl * ar,u16 svc_id,u8 * ul_pipe,u8 * dl_pipe)803 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
804 u8 *ul_pipe, u8 *dl_pipe)
805 {
806 int status = 0;
807
808 switch (svc_id) {
809 case HTC_CTRL_RSVD_SVC:
810 case WMI_CONTROL_SVC:
811 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
812 /* due to large control packets, shift to data pipe */
813 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
814 break;
815 case WMI_DATA_BE_SVC:
816 case WMI_DATA_BK_SVC:
817 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
818 /*
819 * Disable rxdata2 directly, it will be enabled
820 * if FW enable rxdata2
821 */
822 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
823 break;
824 case WMI_DATA_VI_SVC:
825
826 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
827 ar->fw_capabilities))
828 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
829 else
830 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
831 /*
832 * Disable rxdata2 directly, it will be enabled
833 * if FW enable rxdata2
834 */
835 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
836 break;
837 case WMI_DATA_VO_SVC:
838
839 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
840 ar->fw_capabilities))
841 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
842 else
843 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
844 /*
845 * Disable rxdata2 directly, it will be enabled
846 * if FW enable rxdata2
847 */
848 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
849 break;
850 default:
851 status = -EPERM;
852 break;
853 }
854
855 return status;
856 }
857
ath6kl_usb_get_free_queue_number(struct ath6kl * ar,u8 pipe_id)858 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
859 {
860 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
861
862 return device->pipes[pipe_id].urb_cnt;
863 }
864
hif_detach_htc(struct ath6kl * ar)865 static void hif_detach_htc(struct ath6kl *ar)
866 {
867 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
868
869 ath6kl_usb_flush_all(device);
870 }
871
ath6kl_usb_submit_ctrl_out(struct ath6kl_usb * ar_usb,u8 req,u16 value,u16 index,void * data,u32 size)872 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
873 u8 req, u16 value, u16 index, void *data,
874 u32 size)
875 {
876 u8 *buf = NULL;
877 int ret;
878
879 if (size > 0) {
880 buf = kmemdup(data, size, GFP_KERNEL);
881 if (buf == NULL)
882 return -ENOMEM;
883 }
884
885 /* note: if successful returns number of bytes transfered */
886 ret = usb_control_msg(ar_usb->udev,
887 usb_sndctrlpipe(ar_usb->udev, 0),
888 req,
889 USB_DIR_OUT | USB_TYPE_VENDOR |
890 USB_RECIP_DEVICE, value, index, buf,
891 size, 1000);
892
893 if (ret < 0) {
894 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
895 kfree(buf);
896 return ret;
897 }
898
899 kfree(buf);
900
901 return 0;
902 }
903
ath6kl_usb_submit_ctrl_in(struct ath6kl_usb * ar_usb,u8 req,u16 value,u16 index,void * data,u32 size)904 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
905 u8 req, u16 value, u16 index, void *data,
906 u32 size)
907 {
908 u8 *buf = NULL;
909 int ret;
910
911 if (size > 0) {
912 buf = kmalloc(size, GFP_KERNEL);
913 if (buf == NULL)
914 return -ENOMEM;
915 }
916
917 /* note: if successful returns number of bytes transfered */
918 ret = usb_control_msg(ar_usb->udev,
919 usb_rcvctrlpipe(ar_usb->udev, 0),
920 req,
921 USB_DIR_IN | USB_TYPE_VENDOR |
922 USB_RECIP_DEVICE, value, index, buf,
923 size, 2000);
924
925 if (ret < 0) {
926 ath6kl_warn("Failed to read usb control message: %d\n", ret);
927 kfree(buf);
928 return ret;
929 }
930
931 memcpy((u8 *) data, buf, size);
932
933 kfree(buf);
934
935 return 0;
936 }
937
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)938 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
939 u8 req_val, u8 *req_buf, u32 req_len,
940 u8 resp_val, u8 *resp_buf, u32 *resp_len)
941 {
942 int ret;
943
944 /* send command */
945 ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
946 req_buf, req_len);
947
948 if (ret != 0)
949 return ret;
950
951 if (resp_buf == NULL) {
952 /* no expected response */
953 return ret;
954 }
955
956 /* get response */
957 ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
958 resp_buf, *resp_len);
959
960 return ret;
961 }
962
ath6kl_usb_diag_read32(struct ath6kl * ar,u32 address,u32 * data)963 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
964 {
965 struct ath6kl_usb *ar_usb = ar->hif_priv;
966 struct ath6kl_usb_ctrl_diag_resp_read *resp;
967 struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
968 u32 resp_len;
969 int ret;
970
971 cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
972
973 memset(cmd, 0, sizeof(*cmd));
974 cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
975 cmd->address = cpu_to_le32(address);
976 resp_len = sizeof(*resp);
977
978 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
979 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
980 (u8 *) cmd,
981 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
982 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
983 ar_usb->diag_resp_buffer, &resp_len);
984
985 if (ret) {
986 ath6kl_warn("diag read32 failed: %d\n", ret);
987 return ret;
988 }
989
990 resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
991 ar_usb->diag_resp_buffer;
992
993 *data = le32_to_cpu(resp->value);
994
995 return ret;
996 }
997
ath6kl_usb_diag_write32(struct ath6kl * ar,u32 address,__le32 data)998 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
999 {
1000 struct ath6kl_usb *ar_usb = ar->hif_priv;
1001 struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
1002 int ret;
1003
1004 cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
1005
1006 memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
1007 cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
1008 cmd->address = cpu_to_le32(address);
1009 cmd->value = data;
1010
1011 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
1012 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
1013 (u8 *) cmd,
1014 sizeof(*cmd),
1015 0, NULL, NULL);
1016 if (ret) {
1017 ath6kl_warn("diag_write32 failed: %d\n", ret);
1018 return ret;
1019 }
1020
1021 return 0;
1022 }
1023
ath6kl_usb_bmi_read(struct ath6kl * ar,u8 * buf,u32 len)1024 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1025 {
1026 struct ath6kl_usb *ar_usb = ar->hif_priv;
1027 int ret;
1028
1029 /* get response */
1030 ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1031 ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1032 0, 0, buf, len);
1033 if (ret) {
1034 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1035 ret);
1036 return ret;
1037 }
1038
1039 return 0;
1040 }
1041
ath6kl_usb_bmi_write(struct ath6kl * ar,u8 * buf,u32 len)1042 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1043 {
1044 struct ath6kl_usb *ar_usb = ar->hif_priv;
1045 int ret;
1046
1047 /* send command */
1048 ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1049 ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1050 0, 0, buf, len);
1051 if (ret) {
1052 ath6kl_err("unable to send the bmi data to the device: %d\n",
1053 ret);
1054 return ret;
1055 }
1056
1057 return 0;
1058 }
1059
ath6kl_usb_power_on(struct ath6kl * ar)1060 static int ath6kl_usb_power_on(struct ath6kl *ar)
1061 {
1062 hif_start(ar);
1063 return 0;
1064 }
1065
ath6kl_usb_power_off(struct ath6kl * ar)1066 static int ath6kl_usb_power_off(struct ath6kl *ar)
1067 {
1068 hif_detach_htc(ar);
1069 return 0;
1070 }
1071
ath6kl_usb_stop(struct ath6kl * ar)1072 static void ath6kl_usb_stop(struct ath6kl *ar)
1073 {
1074 hif_stop(ar);
1075 }
1076
ath6kl_usb_cleanup_scatter(struct ath6kl * ar)1077 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1078 {
1079 /*
1080 * USB doesn't support it. Just return.
1081 */
1082 return;
1083 }
1084
ath6kl_usb_suspend(struct ath6kl * ar,struct cfg80211_wowlan * wow)1085 static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
1086 {
1087 /*
1088 * cfg80211 suspend/WOW currently not supported for USB.
1089 */
1090 return 0;
1091 }
1092
ath6kl_usb_resume(struct ath6kl * ar)1093 static int ath6kl_usb_resume(struct ath6kl *ar)
1094 {
1095 /*
1096 * cfg80211 resume currently not supported for USB.
1097 */
1098 return 0;
1099 }
1100
1101 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1102 .diag_read32 = ath6kl_usb_diag_read32,
1103 .diag_write32 = ath6kl_usb_diag_write32,
1104 .bmi_read = ath6kl_usb_bmi_read,
1105 .bmi_write = ath6kl_usb_bmi_write,
1106 .power_on = ath6kl_usb_power_on,
1107 .power_off = ath6kl_usb_power_off,
1108 .stop = ath6kl_usb_stop,
1109 .pipe_send = ath6kl_usb_send,
1110 .pipe_get_default = ath6kl_usb_get_default_pipe,
1111 .pipe_map_service = ath6kl_usb_map_service_pipe,
1112 .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1113 .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1114 .suspend = ath6kl_usb_suspend,
1115 .resume = ath6kl_usb_resume,
1116 };
1117
1118 /* ath6kl usb driver registered functions */
ath6kl_usb_probe(struct usb_interface * interface,const struct usb_device_id * id)1119 static int ath6kl_usb_probe(struct usb_interface *interface,
1120 const struct usb_device_id *id)
1121 {
1122 struct usb_device *dev = interface_to_usbdev(interface);
1123 struct ath6kl *ar;
1124 struct ath6kl_usb *ar_usb = NULL;
1125 int vendor_id, product_id;
1126 int ret = 0;
1127
1128 usb_get_dev(dev);
1129
1130 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1131 product_id = le16_to_cpu(dev->descriptor.idProduct);
1132
1133 ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1134 ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1135
1136 if (interface->cur_altsetting)
1137 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1138 interface->cur_altsetting->desc.bInterfaceNumber);
1139
1140
1141 if (dev->speed == USB_SPEED_HIGH)
1142 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1143 else
1144 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1145
1146 ar_usb = ath6kl_usb_create(interface);
1147
1148 if (ar_usb == NULL) {
1149 ret = -ENOMEM;
1150 goto err_usb_put;
1151 }
1152
1153 ar = ath6kl_core_create(&ar_usb->udev->dev);
1154 if (ar == NULL) {
1155 ath6kl_err("Failed to alloc ath6kl core\n");
1156 ret = -ENOMEM;
1157 goto err_usb_destroy;
1158 }
1159
1160 ar->hif_priv = ar_usb;
1161 ar->hif_type = ATH6KL_HIF_TYPE_USB;
1162 ar->hif_ops = &ath6kl_usb_ops;
1163 ar->mbox_info.block_size = 16;
1164 ar->bmi.max_data_size = 252;
1165
1166 ar_usb->ar = ar;
1167
1168 ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1169 if (ret) {
1170 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1171 goto err_core_free;
1172 }
1173
1174 return ret;
1175
1176 err_core_free:
1177 ath6kl_core_destroy(ar);
1178 err_usb_destroy:
1179 ath6kl_usb_destroy(ar_usb);
1180 err_usb_put:
1181 usb_put_dev(dev);
1182
1183 return ret;
1184 }
1185
ath6kl_usb_remove(struct usb_interface * interface)1186 static void ath6kl_usb_remove(struct usb_interface *interface)
1187 {
1188 usb_put_dev(interface_to_usbdev(interface));
1189 ath6kl_usb_device_detached(interface);
1190 }
1191
1192 #ifdef CONFIG_PM
1193
ath6kl_usb_pm_suspend(struct usb_interface * interface,pm_message_t message)1194 static int ath6kl_usb_pm_suspend(struct usb_interface *interface,
1195 pm_message_t message)
1196 {
1197 struct ath6kl_usb *device;
1198 device = usb_get_intfdata(interface);
1199
1200 ath6kl_usb_flush_all(device);
1201 return 0;
1202 }
1203
ath6kl_usb_pm_resume(struct usb_interface * interface)1204 static int ath6kl_usb_pm_resume(struct usb_interface *interface)
1205 {
1206 struct ath6kl_usb *device;
1207 device = usb_get_intfdata(interface);
1208
1209 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1210 ATH6KL_USB_RX_BUFFER_SIZE);
1211 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1212 ATH6KL_USB_RX_BUFFER_SIZE);
1213
1214 return 0;
1215 }
1216
1217 #else
1218
1219 #define ath6kl_usb_pm_suspend NULL
1220 #define ath6kl_usb_pm_resume NULL
1221
1222 #endif
1223
1224 /* table of devices that work with this driver */
1225 static const struct usb_device_id ath6kl_usb_ids[] = {
1226 {USB_DEVICE(0x0cf3, 0x9375)},
1227 {USB_DEVICE(0x0cf3, 0x9374)},
1228 {USB_DEVICE(0x04da, 0x390d)},
1229 { /* Terminating entry */ },
1230 };
1231
1232 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1233
1234 static struct usb_driver ath6kl_usb_driver = {
1235 .name = "ath6kl_usb",
1236 .probe = ath6kl_usb_probe,
1237 .suspend = ath6kl_usb_pm_suspend,
1238 .resume = ath6kl_usb_pm_resume,
1239 .disconnect = ath6kl_usb_remove,
1240 .id_table = ath6kl_usb_ids,
1241 .supports_autosuspend = true,
1242 .disable_hub_initiated_lpm = 1,
1243 };
1244
1245 module_usb_driver(ath6kl_usb_driver);
1246
1247 MODULE_AUTHOR("Atheros Communications, Inc.");
1248 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1249 MODULE_LICENSE("Dual BSD/GPL");
1250 MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
1251 MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
1252 MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
1253 MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
1254 MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
1255 MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
1256 MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE);
1257 MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
1258 MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
1259 MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
1260 MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
1261 MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);
1262