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