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 };
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 /* bail if this pipe is not initialized */
136 if (!pipe->ar_usb)
137 return NULL;
138
139 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
140 if (!list_empty(&pipe->urb_list_head)) {
141 urb_context =
142 list_first_entry(&pipe->urb_list_head,
143 struct ath6kl_urb_context, link);
144 list_del(&urb_context->link);
145 pipe->urb_cnt--;
146 }
147 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
148
149 return urb_context;
150 }
151
ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe * pipe,struct ath6kl_urb_context * urb_context)152 static void ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe *pipe,
153 struct ath6kl_urb_context *urb_context)
154 {
155 unsigned long flags;
156
157 /* bail if this pipe is not initialized */
158 if (!pipe->ar_usb)
159 return;
160
161 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
162 pipe->urb_cnt++;
163
164 list_add(&urb_context->link, &pipe->urb_list_head);
165 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
166 }
167
ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context * urb_context)168 static void ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context *urb_context)
169 {
170 dev_kfree_skb(urb_context->skb);
171 urb_context->skb = NULL;
172
173 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
174 }
175
ath6kl_usb_priv(struct ath6kl * ar)176 static inline struct ath6kl_usb *ath6kl_usb_priv(struct ath6kl *ar)
177 {
178 return ar->hif_priv;
179 }
180
181 /* pipe resource allocation/cleanup */
ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe * pipe,int urb_cnt)182 static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe,
183 int urb_cnt)
184 {
185 struct ath6kl_urb_context *urb_context;
186 int status = 0, i;
187
188 INIT_LIST_HEAD(&pipe->urb_list_head);
189 init_usb_anchor(&pipe->urb_submitted);
190
191 for (i = 0; i < urb_cnt; i++) {
192 urb_context = kzalloc(sizeof(struct ath6kl_urb_context),
193 GFP_KERNEL);
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_scheduled_work();
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 schedule_work(&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 schedule_work(&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
623 kfree(ar_usb);
624 }
625
ath6kl_usb_create(struct usb_interface * interface)626 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
627 {
628 struct usb_device *dev = interface_to_usbdev(interface);
629 struct ath6kl_usb *ar_usb;
630 struct ath6kl_usb_pipe *pipe;
631 int status = 0;
632 int i;
633
634 ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
635 if (ar_usb == NULL)
636 goto fail_ath6kl_usb_create;
637
638 usb_set_intfdata(interface, ar_usb);
639 spin_lock_init(&(ar_usb->cs_lock));
640 ar_usb->udev = dev;
641 ar_usb->interface = interface;
642
643 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
644 pipe = &ar_usb->pipes[i];
645 INIT_WORK(&pipe->io_complete_work,
646 ath6kl_usb_io_comp_work);
647 skb_queue_head_init(&pipe->io_comp_queue);
648 }
649
650 ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
651 if (ar_usb->diag_cmd_buffer == NULL) {
652 status = -ENOMEM;
653 goto fail_ath6kl_usb_create;
654 }
655
656 ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
657 GFP_KERNEL);
658 if (ar_usb->diag_resp_buffer == NULL) {
659 status = -ENOMEM;
660 goto fail_ath6kl_usb_create;
661 }
662
663 status = ath6kl_usb_setup_pipe_resources(ar_usb);
664
665 fail_ath6kl_usb_create:
666 if (status != 0) {
667 ath6kl_usb_destroy(ar_usb);
668 ar_usb = NULL;
669 }
670 return ar_usb;
671 }
672
ath6kl_usb_device_detached(struct usb_interface * interface)673 static void ath6kl_usb_device_detached(struct usb_interface *interface)
674 {
675 struct ath6kl_usb *ar_usb;
676
677 ar_usb = usb_get_intfdata(interface);
678 if (ar_usb == NULL)
679 return;
680
681 ath6kl_stop_txrx(ar_usb->ar);
682
683 /* Delay to wait for the target to reboot */
684 mdelay(20);
685 ath6kl_core_cleanup(ar_usb->ar);
686 ath6kl_usb_destroy(ar_usb);
687 }
688
689 /* exported hif usb APIs for htc pipe */
hif_start(struct ath6kl * ar)690 static void hif_start(struct ath6kl *ar)
691 {
692 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
693 int i;
694
695 ath6kl_usb_start_recv_pipes(device);
696
697 /* set the TX resource avail threshold for each TX pipe */
698 for (i = ATH6KL_USB_PIPE_TX_CTRL;
699 i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
700 device->pipes[i].urb_cnt_thresh =
701 device->pipes[i].urb_alloc / 2;
702 }
703 }
704
ath6kl_usb_send(struct ath6kl * ar,u8 PipeID,struct sk_buff * hdr_skb,struct sk_buff * skb)705 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
706 struct sk_buff *hdr_skb, struct sk_buff *skb)
707 {
708 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
709 struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
710 struct ath6kl_urb_context *urb_context;
711 int usb_status, status = 0;
712 struct urb *urb;
713 u8 *data;
714 u32 len;
715
716 ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
717 __func__, PipeID, skb);
718
719 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
720
721 if (urb_context == NULL) {
722 /*
723 * TODO: it is possible to run out of urbs if
724 * 2 endpoints map to the same pipe ID
725 */
726 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
727 "%s pipe:%d no urbs left. URB Cnt : %d\n",
728 __func__, PipeID, pipe->urb_cnt);
729 status = -ENOMEM;
730 goto fail_hif_send;
731 }
732
733 urb_context->skb = skb;
734
735 data = skb->data;
736 len = skb->len;
737
738 urb = usb_alloc_urb(0, GFP_ATOMIC);
739 if (urb == NULL) {
740 status = -ENOMEM;
741 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
742 urb_context);
743 goto fail_hif_send;
744 }
745
746 usb_fill_bulk_urb(urb,
747 device->udev,
748 pipe->usb_pipe_handle,
749 data,
750 len,
751 ath6kl_usb_usb_transmit_complete, urb_context);
752
753 if ((len % pipe->max_packet_size) == 0) {
754 /* hit a max packet boundary on this pipe */
755 urb->transfer_flags |= URB_ZERO_PACKET;
756 }
757
758 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
759 "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
760 pipe->logical_pipe_num, pipe->usb_pipe_handle,
761 pipe->ep_address, len);
762
763 usb_anchor_urb(urb, &pipe->urb_submitted);
764 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
765
766 if (usb_status) {
767 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
768 "ath6kl usb : usb bulk transmit failed %d\n",
769 usb_status);
770 usb_unanchor_urb(urb);
771 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
772 urb_context);
773 status = -EINVAL;
774 }
775 usb_free_urb(urb);
776
777 fail_hif_send:
778 return status;
779 }
780
hif_stop(struct ath6kl * ar)781 static void hif_stop(struct ath6kl *ar)
782 {
783 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
784
785 ath6kl_usb_flush_all(device);
786 }
787
ath6kl_usb_get_default_pipe(struct ath6kl * ar,u8 * ul_pipe,u8 * dl_pipe)788 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
789 u8 *ul_pipe, u8 *dl_pipe)
790 {
791 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
792 *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
793 }
794
ath6kl_usb_map_service_pipe(struct ath6kl * ar,u16 svc_id,u8 * ul_pipe,u8 * dl_pipe)795 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
796 u8 *ul_pipe, u8 *dl_pipe)
797 {
798 int status = 0;
799
800 switch (svc_id) {
801 case HTC_CTRL_RSVD_SVC:
802 case WMI_CONTROL_SVC:
803 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
804 /* due to large control packets, shift to data pipe */
805 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
806 break;
807 case WMI_DATA_BE_SVC:
808 case WMI_DATA_BK_SVC:
809 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
810 /*
811 * Disable rxdata2 directly, it will be enabled
812 * if FW enable rxdata2
813 */
814 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
815 break;
816 case WMI_DATA_VI_SVC:
817
818 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
819 ar->fw_capabilities))
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 case WMI_DATA_VO_SVC:
830
831 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
832 ar->fw_capabilities))
833 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
834 else
835 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
836 /*
837 * Disable rxdata2 directly, it will be enabled
838 * if FW enable rxdata2
839 */
840 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
841 break;
842 default:
843 status = -EPERM;
844 break;
845 }
846
847 return status;
848 }
849
ath6kl_usb_get_free_queue_number(struct ath6kl * ar,u8 pipe_id)850 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
851 {
852 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
853
854 return device->pipes[pipe_id].urb_cnt;
855 }
856
hif_detach_htc(struct ath6kl * ar)857 static void hif_detach_htc(struct ath6kl *ar)
858 {
859 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
860
861 ath6kl_usb_flush_all(device);
862 }
863
ath6kl_usb_submit_ctrl_out(struct ath6kl_usb * ar_usb,u8 req,u16 value,u16 index,void * data,u32 size)864 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
865 u8 req, u16 value, u16 index, void *data,
866 u32 size)
867 {
868 u8 *buf = NULL;
869 int ret;
870
871 if (size > 0) {
872 buf = kmemdup(data, size, GFP_KERNEL);
873 if (buf == NULL)
874 return -ENOMEM;
875 }
876
877 /* note: if successful returns number of bytes transfered */
878 ret = usb_control_msg(ar_usb->udev,
879 usb_sndctrlpipe(ar_usb->udev, 0),
880 req,
881 USB_DIR_OUT | USB_TYPE_VENDOR |
882 USB_RECIP_DEVICE, value, index, buf,
883 size, 1000);
884
885 if (ret < 0) {
886 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
887 kfree(buf);
888 return ret;
889 }
890
891 kfree(buf);
892
893 return 0;
894 }
895
ath6kl_usb_submit_ctrl_in(struct ath6kl_usb * ar_usb,u8 req,u16 value,u16 index,void * data,u32 size)896 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
897 u8 req, u16 value, u16 index, void *data,
898 u32 size)
899 {
900 u8 *buf = NULL;
901 int ret;
902
903 if (size > 0) {
904 buf = kmalloc(size, GFP_KERNEL);
905 if (buf == NULL)
906 return -ENOMEM;
907 }
908
909 /* note: if successful returns number of bytes transfered */
910 ret = usb_control_msg(ar_usb->udev,
911 usb_rcvctrlpipe(ar_usb->udev, 0),
912 req,
913 USB_DIR_IN | USB_TYPE_VENDOR |
914 USB_RECIP_DEVICE, value, index, buf,
915 size, 2000);
916
917 if (ret < 0) {
918 ath6kl_warn("Failed to read usb control message: %d\n", ret);
919 kfree(buf);
920 return ret;
921 }
922
923 memcpy((u8 *) data, buf, size);
924
925 kfree(buf);
926
927 return 0;
928 }
929
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)930 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
931 u8 req_val, u8 *req_buf, u32 req_len,
932 u8 resp_val, u8 *resp_buf, u32 *resp_len)
933 {
934 int ret;
935
936 /* send command */
937 ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
938 req_buf, req_len);
939
940 if (ret != 0)
941 return ret;
942
943 if (resp_buf == NULL) {
944 /* no expected response */
945 return ret;
946 }
947
948 /* get response */
949 ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
950 resp_buf, *resp_len);
951
952 return ret;
953 }
954
ath6kl_usb_diag_read32(struct ath6kl * ar,u32 address,u32 * data)955 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
956 {
957 struct ath6kl_usb *ar_usb = ar->hif_priv;
958 struct ath6kl_usb_ctrl_diag_resp_read *resp;
959 struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
960 u32 resp_len;
961 int ret;
962
963 cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
964
965 memset(cmd, 0, sizeof(*cmd));
966 cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
967 cmd->address = cpu_to_le32(address);
968 resp_len = sizeof(*resp);
969
970 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
971 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
972 (u8 *) cmd,
973 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
974 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
975 ar_usb->diag_resp_buffer, &resp_len);
976
977 if (ret) {
978 ath6kl_warn("diag read32 failed: %d\n", ret);
979 return ret;
980 }
981
982 resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
983 ar_usb->diag_resp_buffer;
984
985 *data = le32_to_cpu(resp->value);
986
987 return ret;
988 }
989
ath6kl_usb_diag_write32(struct ath6kl * ar,u32 address,__le32 data)990 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
991 {
992 struct ath6kl_usb *ar_usb = ar->hif_priv;
993 struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
994 int ret;
995
996 cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
997
998 memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
999 cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
1000 cmd->address = cpu_to_le32(address);
1001 cmd->value = data;
1002
1003 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
1004 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
1005 (u8 *) cmd,
1006 sizeof(*cmd),
1007 0, NULL, NULL);
1008 if (ret) {
1009 ath6kl_warn("diag_write32 failed: %d\n", ret);
1010 return ret;
1011 }
1012
1013 return 0;
1014 }
1015
ath6kl_usb_bmi_read(struct ath6kl * ar,u8 * buf,u32 len)1016 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1017 {
1018 struct ath6kl_usb *ar_usb = ar->hif_priv;
1019 int ret;
1020
1021 /* get response */
1022 ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1023 ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1024 0, 0, buf, len);
1025 if (ret) {
1026 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1027 ret);
1028 return ret;
1029 }
1030
1031 return 0;
1032 }
1033
ath6kl_usb_bmi_write(struct ath6kl * ar,u8 * buf,u32 len)1034 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1035 {
1036 struct ath6kl_usb *ar_usb = ar->hif_priv;
1037 int ret;
1038
1039 /* send command */
1040 ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1041 ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1042 0, 0, buf, len);
1043 if (ret) {
1044 ath6kl_err("unable to send the bmi data to the device: %d\n",
1045 ret);
1046 return ret;
1047 }
1048
1049 return 0;
1050 }
1051
ath6kl_usb_power_on(struct ath6kl * ar)1052 static int ath6kl_usb_power_on(struct ath6kl *ar)
1053 {
1054 hif_start(ar);
1055 return 0;
1056 }
1057
ath6kl_usb_power_off(struct ath6kl * ar)1058 static int ath6kl_usb_power_off(struct ath6kl *ar)
1059 {
1060 hif_detach_htc(ar);
1061 return 0;
1062 }
1063
ath6kl_usb_stop(struct ath6kl * ar)1064 static void ath6kl_usb_stop(struct ath6kl *ar)
1065 {
1066 hif_stop(ar);
1067 }
1068
ath6kl_usb_cleanup_scatter(struct ath6kl * ar)1069 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1070 {
1071 /*
1072 * USB doesn't support it. Just return.
1073 */
1074 return;
1075 }
1076
ath6kl_usb_suspend(struct ath6kl * ar,struct cfg80211_wowlan * wow)1077 static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
1078 {
1079 /*
1080 * cfg80211 suspend/WOW currently not supported for USB.
1081 */
1082 return 0;
1083 }
1084
ath6kl_usb_resume(struct ath6kl * ar)1085 static int ath6kl_usb_resume(struct ath6kl *ar)
1086 {
1087 /*
1088 * cfg80211 resume currently not supported for USB.
1089 */
1090 return 0;
1091 }
1092
1093 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1094 .diag_read32 = ath6kl_usb_diag_read32,
1095 .diag_write32 = ath6kl_usb_diag_write32,
1096 .bmi_read = ath6kl_usb_bmi_read,
1097 .bmi_write = ath6kl_usb_bmi_write,
1098 .power_on = ath6kl_usb_power_on,
1099 .power_off = ath6kl_usb_power_off,
1100 .stop = ath6kl_usb_stop,
1101 .pipe_send = ath6kl_usb_send,
1102 .pipe_get_default = ath6kl_usb_get_default_pipe,
1103 .pipe_map_service = ath6kl_usb_map_service_pipe,
1104 .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1105 .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1106 .suspend = ath6kl_usb_suspend,
1107 .resume = ath6kl_usb_resume,
1108 };
1109
1110 /* ath6kl usb driver registered functions */
ath6kl_usb_probe(struct usb_interface * interface,const struct usb_device_id * id)1111 static int ath6kl_usb_probe(struct usb_interface *interface,
1112 const struct usb_device_id *id)
1113 {
1114 struct usb_device *dev = interface_to_usbdev(interface);
1115 struct ath6kl *ar;
1116 struct ath6kl_usb *ar_usb = NULL;
1117 int vendor_id, product_id;
1118 int ret = 0;
1119
1120 usb_get_dev(dev);
1121
1122 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1123 product_id = le16_to_cpu(dev->descriptor.idProduct);
1124
1125 ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1126 ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1127
1128 if (interface->cur_altsetting)
1129 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1130 interface->cur_altsetting->desc.bInterfaceNumber);
1131
1132
1133 if (dev->speed == USB_SPEED_HIGH)
1134 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1135 else
1136 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1137
1138 ar_usb = ath6kl_usb_create(interface);
1139
1140 if (ar_usb == NULL) {
1141 ret = -ENOMEM;
1142 goto err_usb_put;
1143 }
1144
1145 ar = ath6kl_core_create(&ar_usb->udev->dev);
1146 if (ar == NULL) {
1147 ath6kl_err("Failed to alloc ath6kl core\n");
1148 ret = -ENOMEM;
1149 goto err_usb_destroy;
1150 }
1151
1152 ar->hif_priv = ar_usb;
1153 ar->hif_type = ATH6KL_HIF_TYPE_USB;
1154 ar->hif_ops = &ath6kl_usb_ops;
1155 ar->mbox_info.block_size = 16;
1156 ar->bmi.max_data_size = 252;
1157
1158 ar_usb->ar = ar;
1159
1160 ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1161 if (ret) {
1162 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1163 goto err_core_free;
1164 }
1165
1166 return ret;
1167
1168 err_core_free:
1169 ath6kl_core_destroy(ar);
1170 err_usb_destroy:
1171 ath6kl_usb_destroy(ar_usb);
1172 err_usb_put:
1173 usb_put_dev(dev);
1174
1175 return ret;
1176 }
1177
ath6kl_usb_remove(struct usb_interface * interface)1178 static void ath6kl_usb_remove(struct usb_interface *interface)
1179 {
1180 usb_put_dev(interface_to_usbdev(interface));
1181 ath6kl_usb_device_detached(interface);
1182 }
1183
1184 #ifdef CONFIG_PM
1185
ath6kl_usb_pm_suspend(struct usb_interface * interface,pm_message_t message)1186 static int ath6kl_usb_pm_suspend(struct usb_interface *interface,
1187 pm_message_t message)
1188 {
1189 struct ath6kl_usb *device;
1190 device = usb_get_intfdata(interface);
1191
1192 ath6kl_usb_flush_all(device);
1193 return 0;
1194 }
1195
ath6kl_usb_pm_resume(struct usb_interface * interface)1196 static int ath6kl_usb_pm_resume(struct usb_interface *interface)
1197 {
1198 struct ath6kl_usb *device;
1199 device = usb_get_intfdata(interface);
1200
1201 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1202 ATH6KL_USB_RX_BUFFER_SIZE);
1203 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1204 ATH6KL_USB_RX_BUFFER_SIZE);
1205
1206 return 0;
1207 }
1208
1209 #else
1210
1211 #define ath6kl_usb_pm_suspend NULL
1212 #define ath6kl_usb_pm_resume NULL
1213
1214 #endif
1215
1216 /* table of devices that work with this driver */
1217 static const struct usb_device_id ath6kl_usb_ids[] = {
1218 {USB_DEVICE(0x0cf3, 0x9375)},
1219 {USB_DEVICE(0x0cf3, 0x9374)},
1220 { /* Terminating entry */ },
1221 };
1222
1223 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1224
1225 static struct usb_driver ath6kl_usb_driver = {
1226 .name = "ath6kl_usb",
1227 .probe = ath6kl_usb_probe,
1228 .suspend = ath6kl_usb_pm_suspend,
1229 .resume = ath6kl_usb_pm_resume,
1230 .disconnect = ath6kl_usb_remove,
1231 .id_table = ath6kl_usb_ids,
1232 .supports_autosuspend = true,
1233 .disable_hub_initiated_lpm = 1,
1234 };
1235
1236 module_usb_driver(ath6kl_usb_driver);
1237
1238 MODULE_AUTHOR("Atheros Communications, Inc.");
1239 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1240 MODULE_LICENSE("Dual BSD/GPL");
1241 MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
1242 MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
1243 MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
1244 MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
1245 MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
1246 MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
1247 MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE);
1248 MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
1249 MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
1250 MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
1251 MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
1252 MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);
1253