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7
8#include <linux/module.h>
9#include <linux/usb.h>
10
11#include "debug.h"
12#include "core.h"
13#include "bmi.h"
14#include "hif.h"
15#include "htc.h"
16#include "usb.h"
17
18static void ath10k_usb_post_recv_transfers(struct ath10k *ar,
19 struct ath10k_usb_pipe *recv_pipe);
20
21
22
23static inline enum ath10k_htc_ep_id
24eid_from_htc_hdr(struct ath10k_htc_hdr *htc_hdr)
25{
26 return (enum ath10k_htc_ep_id)htc_hdr->eid;
27}
28
29static inline bool is_trailer_only_msg(struct ath10k_htc_hdr *htc_hdr)
30{
31 return __le16_to_cpu(htc_hdr->len) == htc_hdr->trailer_len;
32}
33
34
35static struct ath10k_urb_context *
36ath10k_usb_alloc_urb_from_pipe(struct ath10k_usb_pipe *pipe)
37{
38 struct ath10k_urb_context *urb_context = NULL;
39 unsigned long flags;
40
41
42 if (!pipe->ar_usb)
43 return NULL;
44
45 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
46 if (!list_empty(&pipe->urb_list_head)) {
47 urb_context = list_first_entry(&pipe->urb_list_head,
48 struct ath10k_urb_context, link);
49 list_del(&urb_context->link);
50 pipe->urb_cnt--;
51 }
52 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
53
54 return urb_context;
55}
56
57static void ath10k_usb_free_urb_to_pipe(struct ath10k_usb_pipe *pipe,
58 struct ath10k_urb_context *urb_context)
59{
60 unsigned long flags;
61
62
63 if (!pipe->ar_usb)
64 return;
65
66 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
67
68 pipe->urb_cnt++;
69 list_add(&urb_context->link, &pipe->urb_list_head);
70
71 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
72}
73
74static void ath10k_usb_cleanup_recv_urb(struct ath10k_urb_context *urb_context)
75{
76 dev_kfree_skb(urb_context->skb);
77 urb_context->skb = NULL;
78
79 ath10k_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
80}
81
82static void ath10k_usb_free_pipe_resources(struct ath10k *ar,
83 struct ath10k_usb_pipe *pipe)
84{
85 struct ath10k_urb_context *urb_context;
86
87 if (!pipe->ar_usb) {
88
89 return;
90 }
91
92 ath10k_dbg(ar, ATH10K_DBG_USB,
93 "usb free resources lpipe %d hpipe 0x%x urbs %d avail %d\n",
94 pipe->logical_pipe_num, pipe->usb_pipe_handle,
95 pipe->urb_alloc, pipe->urb_cnt);
96
97 if (pipe->urb_alloc != pipe->urb_cnt) {
98 ath10k_dbg(ar, ATH10K_DBG_USB,
99 "usb urb leak lpipe %d hpipe 0x%x urbs %d avail %d\n",
100 pipe->logical_pipe_num, pipe->usb_pipe_handle,
101 pipe->urb_alloc, pipe->urb_cnt);
102 }
103
104 for (;;) {
105 urb_context = ath10k_usb_alloc_urb_from_pipe(pipe);
106
107 if (!urb_context)
108 break;
109
110 kfree(urb_context);
111 }
112}
113
114static void ath10k_usb_cleanup_pipe_resources(struct ath10k *ar)
115{
116 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
117 int i;
118
119 for (i = 0; i < ATH10K_USB_PIPE_MAX; i++)
120 ath10k_usb_free_pipe_resources(ar, &ar_usb->pipes[i]);
121}
122
123
124
125static void ath10k_usb_recv_complete(struct urb *urb)
126{
127 struct ath10k_urb_context *urb_context = urb->context;
128 struct ath10k_usb_pipe *pipe = urb_context->pipe;
129 struct ath10k *ar = pipe->ar_usb->ar;
130 struct sk_buff *skb;
131 int status = 0;
132
133 ath10k_dbg(ar, ATH10K_DBG_USB_BULK,
134 "usb recv pipe %d stat %d len %d urb 0x%pK\n",
135 pipe->logical_pipe_num, urb->status, urb->actual_length,
136 urb);
137
138 if (urb->status != 0) {
139 status = -EIO;
140 switch (urb->status) {
141 case -ECONNRESET:
142 case -ENOENT:
143 case -ESHUTDOWN:
144
145
146
147 status = -ECANCELED;
148 break;
149 default:
150 ath10k_dbg(ar, ATH10K_DBG_USB_BULK,
151 "usb recv pipe %d ep 0x%2.2x failed: %d\n",
152 pipe->logical_pipe_num,
153 pipe->ep_address, urb->status);
154 break;
155 }
156 goto cleanup_recv_urb;
157 }
158
159 if (urb->actual_length == 0)
160 goto cleanup_recv_urb;
161
162 skb = urb_context->skb;
163
164
165 urb_context->skb = NULL;
166 skb_put(skb, urb->actual_length);
167
168
169 skb_queue_tail(&pipe->io_comp_queue, skb);
170 schedule_work(&pipe->io_complete_work);
171
172cleanup_recv_urb:
173 ath10k_usb_cleanup_recv_urb(urb_context);
174
175 if (status == 0 &&
176 pipe->urb_cnt >= pipe->urb_cnt_thresh) {
177
178 ath10k_usb_post_recv_transfers(ar, pipe);
179 }
180}
181
182static void ath10k_usb_transmit_complete(struct urb *urb)
183{
184 struct ath10k_urb_context *urb_context = urb->context;
185 struct ath10k_usb_pipe *pipe = urb_context->pipe;
186 struct ath10k *ar = pipe->ar_usb->ar;
187 struct sk_buff *skb;
188
189 if (urb->status != 0) {
190 ath10k_dbg(ar, ATH10K_DBG_USB_BULK,
191 "pipe: %d, failed:%d\n",
192 pipe->logical_pipe_num, urb->status);
193 }
194
195 skb = urb_context->skb;
196 urb_context->skb = NULL;
197 ath10k_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
198
199
200 skb_queue_tail(&pipe->io_comp_queue, skb);
201 schedule_work(&pipe->io_complete_work);
202}
203
204
205static void ath10k_usb_post_recv_transfers(struct ath10k *ar,
206 struct ath10k_usb_pipe *recv_pipe)
207{
208 struct ath10k_urb_context *urb_context;
209 struct urb *urb;
210 int usb_status;
211
212 for (;;) {
213 urb_context = ath10k_usb_alloc_urb_from_pipe(recv_pipe);
214 if (!urb_context)
215 break;
216
217 urb_context->skb = dev_alloc_skb(ATH10K_USB_RX_BUFFER_SIZE);
218 if (!urb_context->skb)
219 goto err;
220
221 urb = usb_alloc_urb(0, GFP_ATOMIC);
222 if (!urb)
223 goto err;
224
225 usb_fill_bulk_urb(urb,
226 recv_pipe->ar_usb->udev,
227 recv_pipe->usb_pipe_handle,
228 urb_context->skb->data,
229 ATH10K_USB_RX_BUFFER_SIZE,
230 ath10k_usb_recv_complete, urb_context);
231
232 ath10k_dbg(ar, ATH10K_DBG_USB_BULK,
233 "usb bulk recv submit %d 0x%x ep 0x%2.2x len %d buf 0x%pK\n",
234 recv_pipe->logical_pipe_num,
235 recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
236 ATH10K_USB_RX_BUFFER_SIZE, urb_context->skb);
237
238 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
239 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
240
241 if (usb_status) {
242 ath10k_dbg(ar, ATH10K_DBG_USB_BULK,
243 "usb bulk recv failed: %d\n",
244 usb_status);
245 usb_unanchor_urb(urb);
246 usb_free_urb(urb);
247 goto err;
248 }
249 usb_free_urb(urb);
250 }
251
252 return;
253
254err:
255 ath10k_usb_cleanup_recv_urb(urb_context);
256}
257
258static void ath10k_usb_flush_all(struct ath10k *ar)
259{
260 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
261 int i;
262
263 for (i = 0; i < ATH10K_USB_PIPE_MAX; i++) {
264 if (ar_usb->pipes[i].ar_usb) {
265 usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
266 cancel_work_sync(&ar_usb->pipes[i].io_complete_work);
267 }
268 }
269}
270
271static void ath10k_usb_start_recv_pipes(struct ath10k *ar)
272{
273 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
274
275 ar_usb->pipes[ATH10K_USB_PIPE_RX_DATA].urb_cnt_thresh = 1;
276
277 ath10k_usb_post_recv_transfers(ar,
278 &ar_usb->pipes[ATH10K_USB_PIPE_RX_DATA]);
279}
280
281static void ath10k_usb_tx_complete(struct ath10k *ar, struct sk_buff *skb)
282{
283 struct ath10k_htc_hdr *htc_hdr;
284 struct ath10k_htc_ep *ep;
285
286 htc_hdr = (struct ath10k_htc_hdr *)skb->data;
287 ep = &ar->htc.endpoint[htc_hdr->eid];
288 ath10k_htc_notify_tx_completion(ep, skb);
289
290}
291
292static void ath10k_usb_rx_complete(struct ath10k *ar, struct sk_buff *skb)
293{
294 struct ath10k_htc *htc = &ar->htc;
295 struct ath10k_htc_hdr *htc_hdr;
296 enum ath10k_htc_ep_id eid;
297 struct ath10k_htc_ep *ep;
298 u16 payload_len;
299 u8 *trailer;
300 int ret;
301
302 htc_hdr = (struct ath10k_htc_hdr *)skb->data;
303 eid = eid_from_htc_hdr(htc_hdr);
304 ep = &ar->htc.endpoint[eid];
305
306 if (ep->service_id == 0) {
307 ath10k_warn(ar, "ep %d is not connected\n", eid);
308 goto out_free_skb;
309 }
310
311 payload_len = le16_to_cpu(htc_hdr->len);
312 if (!payload_len) {
313 ath10k_warn(ar, "zero length frame received, firmware crashed?\n");
314 goto out_free_skb;
315 }
316
317 if (payload_len < htc_hdr->trailer_len) {
318 ath10k_warn(ar, "malformed frame received, firmware crashed?\n");
319 goto out_free_skb;
320 }
321
322 if (htc_hdr->flags & ATH10K_HTC_FLAG_TRAILER_PRESENT) {
323 trailer = skb->data + sizeof(*htc_hdr) + payload_len -
324 htc_hdr->trailer_len;
325
326 ret = ath10k_htc_process_trailer(htc,
327 trailer,
328 htc_hdr->trailer_len,
329 eid,
330 NULL,
331 NULL);
332 if (ret)
333 goto out_free_skb;
334
335 if (is_trailer_only_msg(htc_hdr))
336 goto out_free_skb;
337
338
339
340
341 skb_trim(skb, skb->len - htc_hdr->trailer_len);
342 }
343
344 skb_pull(skb, sizeof(*htc_hdr));
345 ep->ep_ops.ep_rx_complete(ar, skb);
346
347
348 return;
349
350out_free_skb:
351 dev_kfree_skb(skb);
352}
353
354static void ath10k_usb_io_comp_work(struct work_struct *work)
355{
356 struct ath10k_usb_pipe *pipe = container_of(work,
357 struct ath10k_usb_pipe,
358 io_complete_work);
359 struct ath10k *ar = pipe->ar_usb->ar;
360 struct sk_buff *skb;
361
362 while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
363 if (pipe->flags & ATH10K_USB_PIPE_FLAG_TX)
364 ath10k_usb_tx_complete(ar, skb);
365 else
366 ath10k_usb_rx_complete(ar, skb);
367 }
368}
369
370#define ATH10K_USB_MAX_DIAG_CMD (sizeof(struct ath10k_usb_ctrl_diag_cmd_write))
371#define ATH10K_USB_MAX_DIAG_RESP (sizeof(struct ath10k_usb_ctrl_diag_resp_read))
372
373static void ath10k_usb_destroy(struct ath10k *ar)
374{
375 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
376
377 ath10k_usb_flush_all(ar);
378 ath10k_usb_cleanup_pipe_resources(ar);
379 usb_set_intfdata(ar_usb->interface, NULL);
380
381 kfree(ar_usb->diag_cmd_buffer);
382 kfree(ar_usb->diag_resp_buffer);
383}
384
385static int ath10k_usb_hif_start(struct ath10k *ar)
386{
387 int i;
388 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
389
390 ath10k_usb_start_recv_pipes(ar);
391
392
393 for (i = ATH10K_USB_PIPE_TX_CTRL;
394 i <= ATH10K_USB_PIPE_TX_DATA_HP; i++) {
395 ar_usb->pipes[i].urb_cnt_thresh =
396 ar_usb->pipes[i].urb_alloc / 2;
397 }
398
399 return 0;
400}
401
402static int ath10k_usb_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
403 struct ath10k_hif_sg_item *items, int n_items)
404{
405 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
406 struct ath10k_usb_pipe *pipe = &ar_usb->pipes[pipe_id];
407 struct ath10k_urb_context *urb_context;
408 struct sk_buff *skb;
409 struct urb *urb;
410 int ret, i;
411
412 for (i = 0; i < n_items; i++) {
413 urb_context = ath10k_usb_alloc_urb_from_pipe(pipe);
414 if (!urb_context) {
415 ret = -ENOMEM;
416 goto err;
417 }
418
419 skb = items[i].transfer_context;
420 urb_context->skb = skb;
421
422 urb = usb_alloc_urb(0, GFP_ATOMIC);
423 if (!urb) {
424 ret = -ENOMEM;
425 goto err_free_urb_to_pipe;
426 }
427
428 usb_fill_bulk_urb(urb,
429 ar_usb->udev,
430 pipe->usb_pipe_handle,
431 skb->data,
432 skb->len,
433 ath10k_usb_transmit_complete, urb_context);
434
435 if (!(skb->len % pipe->max_packet_size)) {
436
437 urb->transfer_flags |= URB_ZERO_PACKET;
438 }
439
440 usb_anchor_urb(urb, &pipe->urb_submitted);
441 ret = usb_submit_urb(urb, GFP_ATOMIC);
442 if (ret) {
443 ath10k_dbg(ar, ATH10K_DBG_USB_BULK,
444 "usb bulk transmit failed: %d\n", ret);
445 usb_unanchor_urb(urb);
446 usb_free_urb(urb);
447 ret = -EINVAL;
448 goto err_free_urb_to_pipe;
449 }
450
451 usb_free_urb(urb);
452 }
453
454 return 0;
455
456err_free_urb_to_pipe:
457 ath10k_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
458err:
459 return ret;
460}
461
462static void ath10k_usb_hif_stop(struct ath10k *ar)
463{
464 ath10k_usb_flush_all(ar);
465}
466
467static u16 ath10k_usb_hif_get_free_queue_number(struct ath10k *ar, u8 pipe_id)
468{
469 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
470
471 return ar_usb->pipes[pipe_id].urb_cnt;
472}
473
474static int ath10k_usb_submit_ctrl_out(struct ath10k *ar,
475 u8 req, u16 value, u16 index, void *data,
476 u32 size)
477{
478 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
479 u8 *buf = NULL;
480 int ret;
481
482 if (size > 0) {
483 buf = kmemdup(data, size, GFP_KERNEL);
484 if (!buf)
485 return -ENOMEM;
486 }
487
488
489 ret = usb_control_msg(ar_usb->udev,
490 usb_sndctrlpipe(ar_usb->udev, 0),
491 req,
492 USB_DIR_OUT | USB_TYPE_VENDOR |
493 USB_RECIP_DEVICE, value, index, buf,
494 size, 1000);
495
496 if (ret < 0) {
497 ath10k_warn(ar, "Failed to submit usb control message: %d\n",
498 ret);
499 kfree(buf);
500 return ret;
501 }
502
503 kfree(buf);
504
505 return 0;
506}
507
508static int ath10k_usb_submit_ctrl_in(struct ath10k *ar,
509 u8 req, u16 value, u16 index, void *data,
510 u32 size)
511{
512 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
513 u8 *buf = NULL;
514 int ret;
515
516 if (size > 0) {
517 buf = kmalloc(size, GFP_KERNEL);
518 if (!buf)
519 return -ENOMEM;
520 }
521
522
523 ret = usb_control_msg(ar_usb->udev,
524 usb_rcvctrlpipe(ar_usb->udev, 0),
525 req,
526 USB_DIR_IN | USB_TYPE_VENDOR |
527 USB_RECIP_DEVICE, value, index, buf,
528 size, 2 * HZ);
529
530 if (ret < 0) {
531 ath10k_warn(ar, "Failed to read usb control message: %d\n",
532 ret);
533 kfree(buf);
534 return ret;
535 }
536
537 memcpy((u8 *)data, buf, size);
538
539 kfree(buf);
540
541 return 0;
542}
543
544static int ath10k_usb_ctrl_msg_exchange(struct ath10k *ar,
545 u8 req_val, u8 *req_buf, u32 req_len,
546 u8 resp_val, u8 *resp_buf,
547 u32 *resp_len)
548{
549 int ret;
550
551
552 ret = ath10k_usb_submit_ctrl_out(ar, req_val, 0, 0,
553 req_buf, req_len);
554 if (ret)
555 goto err;
556
557
558 if (resp_buf) {
559 ret = ath10k_usb_submit_ctrl_in(ar, resp_val, 0, 0,
560 resp_buf, *resp_len);
561 if (ret)
562 goto err;
563 }
564
565 return 0;
566err:
567 return ret;
568}
569
570static int ath10k_usb_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
571 size_t buf_len)
572{
573 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
574 struct ath10k_usb_ctrl_diag_cmd_read *cmd;
575 u32 resp_len;
576 int ret;
577
578 if (buf_len < sizeof(struct ath10k_usb_ctrl_diag_resp_read))
579 return -EINVAL;
580
581 cmd = (struct ath10k_usb_ctrl_diag_cmd_read *)ar_usb->diag_cmd_buffer;
582 memset(cmd, 0, sizeof(*cmd));
583 cmd->cmd = ATH10K_USB_CTRL_DIAG_CC_READ;
584 cmd->address = cpu_to_le32(address);
585 resp_len = sizeof(struct ath10k_usb_ctrl_diag_resp_read);
586
587 ret = ath10k_usb_ctrl_msg_exchange(ar,
588 ATH10K_USB_CONTROL_REQ_DIAG_CMD,
589 (u8 *)cmd,
590 sizeof(*cmd),
591 ATH10K_USB_CONTROL_REQ_DIAG_RESP,
592 ar_usb->diag_resp_buffer, &resp_len);
593 if (ret)
594 return ret;
595
596 if (resp_len != sizeof(struct ath10k_usb_ctrl_diag_resp_read))
597 return -EMSGSIZE;
598
599 memcpy(buf, ar_usb->diag_resp_buffer,
600 sizeof(struct ath10k_usb_ctrl_diag_resp_read));
601
602 return 0;
603}
604
605static int ath10k_usb_hif_diag_write(struct ath10k *ar, u32 address,
606 const void *data, int nbytes)
607{
608 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
609 struct ath10k_usb_ctrl_diag_cmd_write *cmd;
610 int ret;
611
612 if (nbytes != sizeof(cmd->value))
613 return -EINVAL;
614
615 cmd = (struct ath10k_usb_ctrl_diag_cmd_write *)ar_usb->diag_cmd_buffer;
616 memset(cmd, 0, sizeof(*cmd));
617 cmd->cmd = cpu_to_le32(ATH10K_USB_CTRL_DIAG_CC_WRITE);
618 cmd->address = cpu_to_le32(address);
619 memcpy(&cmd->value, data, nbytes);
620
621 ret = ath10k_usb_ctrl_msg_exchange(ar,
622 ATH10K_USB_CONTROL_REQ_DIAG_CMD,
623 (u8 *)cmd,
624 sizeof(*cmd),
625 0, NULL, NULL);
626 if (ret)
627 return ret;
628
629 return 0;
630}
631
632static int ath10k_usb_bmi_exchange_msg(struct ath10k *ar,
633 void *req, u32 req_len,
634 void *resp, u32 *resp_len)
635{
636 int ret;
637
638 if (req) {
639 ret = ath10k_usb_submit_ctrl_out(ar,
640 ATH10K_USB_CONTROL_REQ_SEND_BMI_CMD,
641 0, 0, req, req_len);
642 if (ret) {
643 ath10k_warn(ar,
644 "unable to send the bmi data to the device: %d\n",
645 ret);
646 return ret;
647 }
648 }
649
650 if (resp) {
651 ret = ath10k_usb_submit_ctrl_in(ar,
652 ATH10K_USB_CONTROL_REQ_RECV_BMI_RESP,
653 0, 0, resp, *resp_len);
654 if (ret) {
655 ath10k_warn(ar,
656 "Unable to read the bmi data from the device: %d\n",
657 ret);
658 return ret;
659 }
660 }
661
662 return 0;
663}
664
665static void ath10k_usb_hif_get_default_pipe(struct ath10k *ar,
666 u8 *ul_pipe, u8 *dl_pipe)
667{
668 *ul_pipe = ATH10K_USB_PIPE_TX_CTRL;
669 *dl_pipe = ATH10K_USB_PIPE_RX_CTRL;
670}
671
672static int ath10k_usb_hif_map_service_to_pipe(struct ath10k *ar, u16 svc_id,
673 u8 *ul_pipe, u8 *dl_pipe)
674{
675 switch (svc_id) {
676 case ATH10K_HTC_SVC_ID_RSVD_CTRL:
677 case ATH10K_HTC_SVC_ID_WMI_CONTROL:
678 *ul_pipe = ATH10K_USB_PIPE_TX_CTRL;
679
680 *dl_pipe = ATH10K_USB_PIPE_RX_DATA;
681 break;
682 case ATH10K_HTC_SVC_ID_HTT_DATA_MSG:
683 *ul_pipe = ATH10K_USB_PIPE_TX_DATA_LP;
684
685
686
687 *dl_pipe = ATH10K_USB_PIPE_RX_DATA;
688 break;
689 default:
690 return -EPERM;
691 }
692
693 return 0;
694}
695
696static int ath10k_usb_hif_power_up(struct ath10k *ar,
697 enum ath10k_firmware_mode fw_mode)
698{
699 return 0;
700}
701
702static void ath10k_usb_hif_power_down(struct ath10k *ar)
703{
704 ath10k_usb_flush_all(ar);
705}
706
707#ifdef CONFIG_PM
708
709static int ath10k_usb_hif_suspend(struct ath10k *ar)
710{
711 return -EOPNOTSUPP;
712}
713
714static int ath10k_usb_hif_resume(struct ath10k *ar)
715{
716 return -EOPNOTSUPP;
717}
718#endif
719
720static const struct ath10k_hif_ops ath10k_usb_hif_ops = {
721 .tx_sg = ath10k_usb_hif_tx_sg,
722 .diag_read = ath10k_usb_hif_diag_read,
723 .diag_write = ath10k_usb_hif_diag_write,
724 .exchange_bmi_msg = ath10k_usb_bmi_exchange_msg,
725 .start = ath10k_usb_hif_start,
726 .stop = ath10k_usb_hif_stop,
727 .map_service_to_pipe = ath10k_usb_hif_map_service_to_pipe,
728 .get_default_pipe = ath10k_usb_hif_get_default_pipe,
729 .get_free_queue_number = ath10k_usb_hif_get_free_queue_number,
730 .power_up = ath10k_usb_hif_power_up,
731 .power_down = ath10k_usb_hif_power_down,
732#ifdef CONFIG_PM
733 .suspend = ath10k_usb_hif_suspend,
734 .resume = ath10k_usb_hif_resume,
735#endif
736};
737
738static u8 ath10k_usb_get_logical_pipe_num(u8 ep_address, int *urb_count)
739{
740 u8 pipe_num = ATH10K_USB_PIPE_INVALID;
741
742 switch (ep_address) {
743 case ATH10K_USB_EP_ADDR_APP_CTRL_IN:
744 pipe_num = ATH10K_USB_PIPE_RX_CTRL;
745 *urb_count = RX_URB_COUNT;
746 break;
747 case ATH10K_USB_EP_ADDR_APP_DATA_IN:
748 pipe_num = ATH10K_USB_PIPE_RX_DATA;
749 *urb_count = RX_URB_COUNT;
750 break;
751 case ATH10K_USB_EP_ADDR_APP_INT_IN:
752 pipe_num = ATH10K_USB_PIPE_RX_INT;
753 *urb_count = RX_URB_COUNT;
754 break;
755 case ATH10K_USB_EP_ADDR_APP_DATA2_IN:
756 pipe_num = ATH10K_USB_PIPE_RX_DATA2;
757 *urb_count = RX_URB_COUNT;
758 break;
759 case ATH10K_USB_EP_ADDR_APP_CTRL_OUT:
760 pipe_num = ATH10K_USB_PIPE_TX_CTRL;
761 *urb_count = TX_URB_COUNT;
762 break;
763 case ATH10K_USB_EP_ADDR_APP_DATA_LP_OUT:
764 pipe_num = ATH10K_USB_PIPE_TX_DATA_LP;
765 *urb_count = TX_URB_COUNT;
766 break;
767 case ATH10K_USB_EP_ADDR_APP_DATA_MP_OUT:
768 pipe_num = ATH10K_USB_PIPE_TX_DATA_MP;
769 *urb_count = TX_URB_COUNT;
770 break;
771 case ATH10K_USB_EP_ADDR_APP_DATA_HP_OUT:
772 pipe_num = ATH10K_USB_PIPE_TX_DATA_HP;
773 *urb_count = TX_URB_COUNT;
774 break;
775 default:
776
777 break;
778 }
779
780 return pipe_num;
781}
782
783static int ath10k_usb_alloc_pipe_resources(struct ath10k *ar,
784 struct ath10k_usb_pipe *pipe,
785 int urb_cnt)
786{
787 struct ath10k_urb_context *urb_context;
788 int i;
789
790 INIT_LIST_HEAD(&pipe->urb_list_head);
791 init_usb_anchor(&pipe->urb_submitted);
792
793 for (i = 0; i < urb_cnt; i++) {
794 urb_context = kzalloc(sizeof(*urb_context), GFP_KERNEL);
795 if (!urb_context)
796 return -ENOMEM;
797
798 urb_context->pipe = pipe;
799
800
801
802
803 pipe->urb_alloc++;
804 ath10k_usb_free_urb_to_pipe(pipe, urb_context);
805 }
806
807 ath10k_dbg(ar, ATH10K_DBG_USB,
808 "usb alloc resources lpipe %d hpipe 0x%x urbs %d\n",
809 pipe->logical_pipe_num, pipe->usb_pipe_handle,
810 pipe->urb_alloc);
811
812 return 0;
813}
814
815static int ath10k_usb_setup_pipe_resources(struct ath10k *ar,
816 struct usb_interface *interface)
817{
818 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
819 struct usb_host_interface *iface_desc = interface->cur_altsetting;
820 struct usb_endpoint_descriptor *endpoint;
821 struct ath10k_usb_pipe *pipe;
822 int ret, i, urbcount;
823 u8 pipe_num;
824
825 ath10k_dbg(ar, ATH10K_DBG_USB, "usb setting up pipes using interface\n");
826
827
828 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
829 endpoint = &iface_desc->endpoint[i].desc;
830
831 if (ATH10K_USB_IS_BULK_EP(endpoint->bmAttributes)) {
832 ath10k_dbg(ar, ATH10K_DBG_USB,
833 "usb %s bulk ep 0x%2.2x maxpktsz %d\n",
834 ATH10K_USB_IS_DIR_IN
835 (endpoint->bEndpointAddress) ?
836 "rx" : "tx", endpoint->bEndpointAddress,
837 le16_to_cpu(endpoint->wMaxPacketSize));
838 } else if (ATH10K_USB_IS_INT_EP(endpoint->bmAttributes)) {
839 ath10k_dbg(ar, ATH10K_DBG_USB,
840 "usb %s int ep 0x%2.2x maxpktsz %d interval %d\n",
841 ATH10K_USB_IS_DIR_IN
842 (endpoint->bEndpointAddress) ?
843 "rx" : "tx", endpoint->bEndpointAddress,
844 le16_to_cpu(endpoint->wMaxPacketSize),
845 endpoint->bInterval);
846 } else if (ATH10K_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
847
848 ath10k_dbg(ar, ATH10K_DBG_USB,
849 "usb %s isoc ep 0x%2.2x maxpktsz %d interval %d\n",
850 ATH10K_USB_IS_DIR_IN
851 (endpoint->bEndpointAddress) ?
852 "rx" : "tx", endpoint->bEndpointAddress,
853 le16_to_cpu(endpoint->wMaxPacketSize),
854 endpoint->bInterval);
855 }
856 urbcount = 0;
857
858 pipe_num =
859 ath10k_usb_get_logical_pipe_num(endpoint->bEndpointAddress,
860 &urbcount);
861 if (pipe_num == ATH10K_USB_PIPE_INVALID)
862 continue;
863
864 pipe = &ar_usb->pipes[pipe_num];
865 if (pipe->ar_usb)
866
867 continue;
868
869 pipe->ar_usb = ar_usb;
870 pipe->logical_pipe_num = pipe_num;
871 pipe->ep_address = endpoint->bEndpointAddress;
872 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
873
874 if (ATH10K_USB_IS_BULK_EP(endpoint->bmAttributes)) {
875 if (ATH10K_USB_IS_DIR_IN(pipe->ep_address)) {
876 pipe->usb_pipe_handle =
877 usb_rcvbulkpipe(ar_usb->udev,
878 pipe->ep_address);
879 } else {
880 pipe->usb_pipe_handle =
881 usb_sndbulkpipe(ar_usb->udev,
882 pipe->ep_address);
883 }
884 } else if (ATH10K_USB_IS_INT_EP(endpoint->bmAttributes)) {
885 if (ATH10K_USB_IS_DIR_IN(pipe->ep_address)) {
886 pipe->usb_pipe_handle =
887 usb_rcvintpipe(ar_usb->udev,
888 pipe->ep_address);
889 } else {
890 pipe->usb_pipe_handle =
891 usb_sndintpipe(ar_usb->udev,
892 pipe->ep_address);
893 }
894 } else if (ATH10K_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
895
896 if (ATH10K_USB_IS_DIR_IN(pipe->ep_address)) {
897 pipe->usb_pipe_handle =
898 usb_rcvisocpipe(ar_usb->udev,
899 pipe->ep_address);
900 } else {
901 pipe->usb_pipe_handle =
902 usb_sndisocpipe(ar_usb->udev,
903 pipe->ep_address);
904 }
905 }
906
907 pipe->ep_desc = endpoint;
908
909 if (!ATH10K_USB_IS_DIR_IN(pipe->ep_address))
910 pipe->flags |= ATH10K_USB_PIPE_FLAG_TX;
911
912 ret = ath10k_usb_alloc_pipe_resources(ar, pipe, urbcount);
913 if (ret)
914 return ret;
915 }
916
917 return 0;
918}
919
920static int ath10k_usb_create(struct ath10k *ar,
921 struct usb_interface *interface)
922{
923 struct ath10k_usb *ar_usb = ath10k_usb_priv(ar);
924 struct usb_device *dev = interface_to_usbdev(interface);
925 struct ath10k_usb_pipe *pipe;
926 int ret, i;
927
928 usb_set_intfdata(interface, ar_usb);
929 spin_lock_init(&ar_usb->cs_lock);
930 ar_usb->udev = dev;
931 ar_usb->interface = interface;
932
933 for (i = 0; i < ATH10K_USB_PIPE_MAX; i++) {
934 pipe = &ar_usb->pipes[i];
935 INIT_WORK(&pipe->io_complete_work,
936 ath10k_usb_io_comp_work);
937 skb_queue_head_init(&pipe->io_comp_queue);
938 }
939
940 ar_usb->diag_cmd_buffer = kzalloc(ATH10K_USB_MAX_DIAG_CMD, GFP_KERNEL);
941 if (!ar_usb->diag_cmd_buffer) {
942 ret = -ENOMEM;
943 goto err;
944 }
945
946 ar_usb->diag_resp_buffer = kzalloc(ATH10K_USB_MAX_DIAG_RESP,
947 GFP_KERNEL);
948 if (!ar_usb->diag_resp_buffer) {
949 ret = -ENOMEM;
950 goto err;
951 }
952
953 ret = ath10k_usb_setup_pipe_resources(ar, interface);
954 if (ret)
955 goto err;
956
957 return 0;
958
959err:
960 ath10k_usb_destroy(ar);
961 return ret;
962}
963
964
965static int ath10k_usb_probe(struct usb_interface *interface,
966 const struct usb_device_id *id)
967{
968 struct ath10k *ar;
969 struct ath10k_usb *ar_usb;
970 struct usb_device *dev = interface_to_usbdev(interface);
971 int ret, vendor_id, product_id;
972 enum ath10k_hw_rev hw_rev;
973 struct ath10k_bus_params bus_params = {};
974
975
976
977
978
979
980
981 hw_rev = ATH10K_HW_QCA9377;
982
983 ar = ath10k_core_create(sizeof(*ar_usb), &dev->dev, ATH10K_BUS_USB,
984 hw_rev, &ath10k_usb_hif_ops);
985 if (!ar) {
986 dev_err(&dev->dev, "failed to allocate core\n");
987 return -ENOMEM;
988 }
989
990 usb_get_dev(dev);
991 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
992 product_id = le16_to_cpu(dev->descriptor.idProduct);
993
994 ath10k_dbg(ar, ATH10K_DBG_BOOT,
995 "usb new func vendor 0x%04x product 0x%04x\n",
996 vendor_id, product_id);
997
998 ar_usb = ath10k_usb_priv(ar);
999 ret = ath10k_usb_create(ar, interface);
1000 ar_usb->ar = ar;
1001
1002 ar->dev_id = product_id;
1003 ar->id.vendor = vendor_id;
1004 ar->id.device = product_id;
1005
1006 bus_params.dev_type = ATH10K_DEV_TYPE_HL;
1007
1008 bus_params.chip_id = 0;
1009 ret = ath10k_core_register(ar, &bus_params);
1010 if (ret) {
1011 ath10k_warn(ar, "failed to register driver core: %d\n", ret);
1012 goto err;
1013 }
1014
1015
1016 ath10k_warn(ar, "Warning: ath10k USB support is incomplete, don't expect anything to work!\n");
1017
1018 return 0;
1019
1020err:
1021 ath10k_core_destroy(ar);
1022
1023 usb_put_dev(dev);
1024
1025 return ret;
1026}
1027
1028static void ath10k_usb_remove(struct usb_interface *interface)
1029{
1030 struct ath10k_usb *ar_usb;
1031
1032 ar_usb = usb_get_intfdata(interface);
1033 if (!ar_usb)
1034 return;
1035
1036 ath10k_core_unregister(ar_usb->ar);
1037 ath10k_usb_destroy(ar_usb->ar);
1038 usb_put_dev(interface_to_usbdev(interface));
1039 ath10k_core_destroy(ar_usb->ar);
1040}
1041
1042#ifdef CONFIG_PM
1043
1044static int ath10k_usb_pm_suspend(struct usb_interface *interface,
1045 pm_message_t message)
1046{
1047 struct ath10k_usb *ar_usb = usb_get_intfdata(interface);
1048
1049 ath10k_usb_flush_all(ar_usb->ar);
1050 return 0;
1051}
1052
1053static int ath10k_usb_pm_resume(struct usb_interface *interface)
1054{
1055 struct ath10k_usb *ar_usb = usb_get_intfdata(interface);
1056 struct ath10k *ar = ar_usb->ar;
1057
1058 ath10k_usb_post_recv_transfers(ar,
1059 &ar_usb->pipes[ATH10K_USB_PIPE_RX_DATA]);
1060
1061 return 0;
1062}
1063
1064#else
1065
1066#define ath10k_usb_pm_suspend NULL
1067#define ath10k_usb_pm_resume NULL
1068
1069#endif
1070
1071
1072static struct usb_device_id ath10k_usb_ids[] = {
1073 {USB_DEVICE(0x13b1, 0x0042)},
1074 { },
1075};
1076
1077MODULE_DEVICE_TABLE(usb, ath10k_usb_ids);
1078
1079static struct usb_driver ath10k_usb_driver = {
1080 .name = "ath10k_usb",
1081 .probe = ath10k_usb_probe,
1082 .suspend = ath10k_usb_pm_suspend,
1083 .resume = ath10k_usb_pm_resume,
1084 .disconnect = ath10k_usb_remove,
1085 .id_table = ath10k_usb_ids,
1086 .supports_autosuspend = true,
1087 .disable_hub_initiated_lpm = 1,
1088};
1089
1090module_usb_driver(ath10k_usb_driver);
1091
1092MODULE_AUTHOR("Atheros Communications, Inc.");
1093MODULE_DESCRIPTION("Driver support for Qualcomm Atheros 802.11ac WLAN USB devices");
1094MODULE_LICENSE("Dual BSD/GPL");
1095
