]> Git Repo - J-linux.git/blob - drivers/net/wireless/ath/ath6kl/usb.c
Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / drivers / net / wireless / ath / ath6kl / usb.c
1 /*
2  * Copyright (c) 2007-2011 Atheros Communications Inc.
3  * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4  *
5  * Permission to use, copy, modify, and/or distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17
18 #include <linux/module.h>
19 #include <linux/usb.h>
20
21 #include "debug.h"
22 #include "core.h"
23
24 /* constants */
25 #define TX_URB_COUNT            32
26 #define RX_URB_COUNT            32
27 #define ATH6KL_USB_RX_BUFFER_SIZE  4096
28
29 /* tx/rx pipes for usb */
30 enum ATH6KL_USB_PIPE_ID {
31         ATH6KL_USB_PIPE_TX_CTRL = 0,
32         ATH6KL_USB_PIPE_TX_DATA_LP,
33         ATH6KL_USB_PIPE_TX_DATA_MP,
34         ATH6KL_USB_PIPE_TX_DATA_HP,
35         ATH6KL_USB_PIPE_RX_CTRL,
36         ATH6KL_USB_PIPE_RX_DATA,
37         ATH6KL_USB_PIPE_RX_DATA2,
38         ATH6KL_USB_PIPE_RX_INT,
39         ATH6KL_USB_PIPE_MAX
40 };
41
42 #define ATH6KL_USB_PIPE_INVALID ATH6KL_USB_PIPE_MAX
43
44 struct ath6kl_usb_pipe {
45         struct list_head urb_list_head;
46         struct usb_anchor urb_submitted;
47         u32 urb_alloc;
48         u32 urb_cnt;
49         u32 urb_cnt_thresh;
50         unsigned int usb_pipe_handle;
51         u32 flags;
52         u8 ep_address;
53         u8 logical_pipe_num;
54         struct ath6kl_usb *ar_usb;
55         u16 max_packet_size;
56         struct work_struct io_complete_work;
57         struct sk_buff_head io_comp_queue;
58         struct usb_endpoint_descriptor *ep_desc;
59 };
60
61 #define ATH6KL_USB_PIPE_FLAG_TX    (1 << 0)
62
63 /* usb device object */
64 struct ath6kl_usb {
65         /* protects pipe->urb_list_head and  pipe->urb_cnt */
66         spinlock_t cs_lock;
67
68         struct usb_device *udev;
69         struct usb_interface *interface;
70         struct ath6kl_usb_pipe pipes[ATH6KL_USB_PIPE_MAX];
71         u8 *diag_cmd_buffer;
72         u8 *diag_resp_buffer;
73         struct ath6kl *ar;
74         struct workqueue_struct *wq;
75 };
76
77 /* usb urb object */
78 struct ath6kl_urb_context {
79         struct list_head link;
80         struct ath6kl_usb_pipe *pipe;
81         struct sk_buff *skb;
82         struct ath6kl *ar;
83 };
84
85 /* USB endpoint definitions */
86 #define ATH6KL_USB_EP_ADDR_APP_CTRL_IN          0x81
87 #define ATH6KL_USB_EP_ADDR_APP_DATA_IN          0x82
88 #define ATH6KL_USB_EP_ADDR_APP_DATA2_IN         0x83
89 #define ATH6KL_USB_EP_ADDR_APP_INT_IN           0x84
90
91 #define ATH6KL_USB_EP_ADDR_APP_CTRL_OUT         0x01
92 #define ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT      0x02
93 #define ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT      0x03
94 #define ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT      0x04
95
96 /* diagnostic command defnitions */
97 #define ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD        1
98 #define ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP       2
99 #define ATH6KL_USB_CONTROL_REQ_DIAG_CMD            3
100 #define ATH6KL_USB_CONTROL_REQ_DIAG_RESP           4
101
102 #define ATH6KL_USB_CTRL_DIAG_CC_READ               0
103 #define ATH6KL_USB_CTRL_DIAG_CC_WRITE              1
104
105 struct ath6kl_usb_ctrl_diag_cmd_write {
106         __le32 cmd;
107         __le32 address;
108         __le32 value;
109         __le32 _pad[1];
110 } __packed;
111
112 struct ath6kl_usb_ctrl_diag_cmd_read {
113         __le32 cmd;
114         __le32 address;
115 } __packed;
116
117 struct ath6kl_usb_ctrl_diag_resp_read {
118         __le32 value;
119 } __packed;
120
121 /* function declarations */
122 static void ath6kl_usb_recv_complete(struct urb *urb);
123
124 #define ATH6KL_USB_IS_BULK_EP(attr) (((attr) & 3) == 0x02)
125 #define ATH6KL_USB_IS_INT_EP(attr)  (((attr) & 3) == 0x03)
126 #define ATH6KL_USB_IS_ISOC_EP(attr)  (((attr) & 3) == 0x01)
127 #define ATH6KL_USB_IS_DIR_IN(addr)  ((addr) & 0x80)
128
129 /* pipe/urb operations */
130 static struct ath6kl_urb_context *
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
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
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
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 */
183 static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe,
184                                            int urb_cnt)
185 {
186         struct ath6kl_urb_context *urb_context;
187         int status = 0, i;
188
189         INIT_LIST_HEAD(&pipe->urb_list_head);
190         init_usb_anchor(&pipe->urb_submitted);
191
192         for (i = 0; i < urb_cnt; i++) {
193                 urb_context = kzalloc(sizeof(struct ath6kl_urb_context),
194                                       GFP_KERNEL);
195                 if (urb_context == NULL) {
196                         status = -ENOMEM;
197                         goto fail_alloc_pipe_resources;
198                 }
199
200                 urb_context->pipe = pipe;
201
202                 /*
203                  * we are only allocate the urb contexts here, the actual URB
204                  * is allocated from the kernel as needed to do a transaction
205                  */
206                 pipe->urb_alloc++;
207                 ath6kl_usb_free_urb_to_pipe(pipe, urb_context);
208         }
209
210         ath6kl_dbg(ATH6KL_DBG_USB,
211                    "ath6kl usb: alloc resources lpipe:%d hpipe:0x%X urbs:%d\n",
212                    pipe->logical_pipe_num, pipe->usb_pipe_handle,
213                    pipe->urb_alloc);
214
215 fail_alloc_pipe_resources:
216         return status;
217 }
218
219 static void ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe *pipe)
220 {
221         struct ath6kl_urb_context *urb_context;
222
223         if (pipe->ar_usb == NULL) {
224                 /* nothing allocated for this pipe */
225                 return;
226         }
227
228         ath6kl_dbg(ATH6KL_DBG_USB,
229                    "ath6kl usb: free resources lpipe:%d"
230                    "hpipe:0x%X urbs:%d avail:%d\n",
231                    pipe->logical_pipe_num, pipe->usb_pipe_handle,
232                    pipe->urb_alloc, pipe->urb_cnt);
233
234         if (pipe->urb_alloc != pipe->urb_cnt) {
235                 ath6kl_dbg(ATH6KL_DBG_USB,
236                            "ath6kl usb: urb leak! lpipe:%d"
237                            "hpipe:0x%X urbs:%d avail:%d\n",
238                            pipe->logical_pipe_num, pipe->usb_pipe_handle,
239                            pipe->urb_alloc, pipe->urb_cnt);
240         }
241
242         while (true) {
243                 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
244                 if (urb_context == NULL)
245                         break;
246                 kfree(urb_context);
247         }
248 }
249
250 static void ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb *ar_usb)
251 {
252         int i;
253
254         for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++)
255                 ath6kl_usb_free_pipe_resources(&ar_usb->pipes[i]);
256 }
257
258 static u8 ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb *ar_usb,
259                                           u8 ep_address, int *urb_count)
260 {
261         u8 pipe_num = ATH6KL_USB_PIPE_INVALID;
262
263         switch (ep_address) {
264         case ATH6KL_USB_EP_ADDR_APP_CTRL_IN:
265                 pipe_num = ATH6KL_USB_PIPE_RX_CTRL;
266                 *urb_count = RX_URB_COUNT;
267                 break;
268         case ATH6KL_USB_EP_ADDR_APP_DATA_IN:
269                 pipe_num = ATH6KL_USB_PIPE_RX_DATA;
270                 *urb_count = RX_URB_COUNT;
271                 break;
272         case ATH6KL_USB_EP_ADDR_APP_INT_IN:
273                 pipe_num = ATH6KL_USB_PIPE_RX_INT;
274                 *urb_count = RX_URB_COUNT;
275                 break;
276         case ATH6KL_USB_EP_ADDR_APP_DATA2_IN:
277                 pipe_num = ATH6KL_USB_PIPE_RX_DATA2;
278                 *urb_count = RX_URB_COUNT;
279                 break;
280         case ATH6KL_USB_EP_ADDR_APP_CTRL_OUT:
281                 pipe_num = ATH6KL_USB_PIPE_TX_CTRL;
282                 *urb_count = TX_URB_COUNT;
283                 break;
284         case ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT:
285                 pipe_num = ATH6KL_USB_PIPE_TX_DATA_LP;
286                 *urb_count = TX_URB_COUNT;
287                 break;
288         case ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT:
289                 pipe_num = ATH6KL_USB_PIPE_TX_DATA_MP;
290                 *urb_count = TX_URB_COUNT;
291                 break;
292         case ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT:
293                 pipe_num = ATH6KL_USB_PIPE_TX_DATA_HP;
294                 *urb_count = TX_URB_COUNT;
295                 break;
296         default:
297                 /* note: there may be endpoints not currently used */
298                 break;
299         }
300
301         return pipe_num;
302 }
303
304 static int ath6kl_usb_setup_pipe_resources(struct ath6kl_usb *ar_usb)
305 {
306         struct usb_interface *interface = ar_usb->interface;
307         struct usb_host_interface *iface_desc = interface->cur_altsetting;
308         struct usb_endpoint_descriptor *endpoint;
309         struct ath6kl_usb_pipe *pipe;
310         int i, urbcount, status = 0;
311         u8 pipe_num;
312
313         ath6kl_dbg(ATH6KL_DBG_USB, "setting up USB Pipes using interface\n");
314
315         /* walk descriptors and setup pipes */
316         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
317                 endpoint = &iface_desc->endpoint[i].desc;
318
319                 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
320                         ath6kl_dbg(ATH6KL_DBG_USB,
321                                    "%s Bulk Ep:0x%2.2X maxpktsz:%d\n",
322                                    ATH6KL_USB_IS_DIR_IN
323                                    (endpoint->bEndpointAddress) ?
324                                    "RX" : "TX", endpoint->bEndpointAddress,
325                                    le16_to_cpu(endpoint->wMaxPacketSize));
326                 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
327                         ath6kl_dbg(ATH6KL_DBG_USB,
328                                    "%s Int Ep:0x%2.2X maxpktsz:%d interval:%d\n",
329                                    ATH6KL_USB_IS_DIR_IN
330                                    (endpoint->bEndpointAddress) ?
331                                    "RX" : "TX", endpoint->bEndpointAddress,
332                                    le16_to_cpu(endpoint->wMaxPacketSize),
333                                    endpoint->bInterval);
334                 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
335                         /* TODO for ISO */
336                         ath6kl_dbg(ATH6KL_DBG_USB,
337                                    "%s ISOC Ep:0x%2.2X maxpktsz:%d interval:%d\n",
338                                    ATH6KL_USB_IS_DIR_IN
339                                    (endpoint->bEndpointAddress) ?
340                                    "RX" : "TX", endpoint->bEndpointAddress,
341                                    le16_to_cpu(endpoint->wMaxPacketSize),
342                                    endpoint->bInterval);
343                 }
344
345                 /* Ignore broken descriptors. */
346                 if (usb_endpoint_maxp(endpoint) == 0)
347                         continue;
348
349                 urbcount = 0;
350
351                 pipe_num =
352                     ath6kl_usb_get_logical_pipe_num(ar_usb,
353                                                     endpoint->bEndpointAddress,
354                                                     &urbcount);
355                 if (pipe_num == ATH6KL_USB_PIPE_INVALID)
356                         continue;
357
358                 pipe = &ar_usb->pipes[pipe_num];
359                 if (pipe->ar_usb != NULL) {
360                         /* hmmm..pipe was already setup */
361                         continue;
362                 }
363
364                 pipe->ar_usb = ar_usb;
365                 pipe->logical_pipe_num = pipe_num;
366                 pipe->ep_address = endpoint->bEndpointAddress;
367                 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
368
369                 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
370                         if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
371                                 pipe->usb_pipe_handle =
372                                     usb_rcvbulkpipe(ar_usb->udev,
373                                                     pipe->ep_address);
374                         } else {
375                                 pipe->usb_pipe_handle =
376                                     usb_sndbulkpipe(ar_usb->udev,
377                                                     pipe->ep_address);
378                         }
379                 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
380                         if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
381                                 pipe->usb_pipe_handle =
382                                     usb_rcvintpipe(ar_usb->udev,
383                                                    pipe->ep_address);
384                         } else {
385                                 pipe->usb_pipe_handle =
386                                     usb_sndintpipe(ar_usb->udev,
387                                                    pipe->ep_address);
388                         }
389                 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
390                         /* TODO for ISO */
391                         if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
392                                 pipe->usb_pipe_handle =
393                                     usb_rcvisocpipe(ar_usb->udev,
394                                                     pipe->ep_address);
395                         } else {
396                                 pipe->usb_pipe_handle =
397                                     usb_sndisocpipe(ar_usb->udev,
398                                                     pipe->ep_address);
399                         }
400                 }
401
402                 pipe->ep_desc = endpoint;
403
404                 if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address))
405                         pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX;
406
407                 status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount);
408                 if (status != 0)
409                         break;
410         }
411
412         return status;
413 }
414
415 /* pipe operations */
416 static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe,
417                                            int buffer_length)
418 {
419         struct ath6kl_urb_context *urb_context;
420         struct urb *urb;
421         int usb_status;
422
423         while (true) {
424                 urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe);
425                 if (urb_context == NULL)
426                         break;
427
428                 urb_context->skb = dev_alloc_skb(buffer_length);
429                 if (urb_context->skb == NULL)
430                         goto err_cleanup_urb;
431
432                 urb = usb_alloc_urb(0, GFP_ATOMIC);
433                 if (urb == NULL)
434                         goto err_cleanup_urb;
435
436                 usb_fill_bulk_urb(urb,
437                                   recv_pipe->ar_usb->udev,
438                                   recv_pipe->usb_pipe_handle,
439                                   urb_context->skb->data,
440                                   buffer_length,
441                                   ath6kl_usb_recv_complete, urb_context);
442
443                 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
444                            "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n",
445                            recv_pipe->logical_pipe_num,
446                            recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
447                            buffer_length, urb_context->skb);
448
449                 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
450                 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
451
452                 if (usb_status) {
453                         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
454                                    "ath6kl usb : usb bulk recv failed %d\n",
455                                    usb_status);
456                         usb_unanchor_urb(urb);
457                         usb_free_urb(urb);
458                         goto err_cleanup_urb;
459                 }
460                 usb_free_urb(urb);
461         }
462         return;
463
464 err_cleanup_urb:
465         ath6kl_usb_cleanup_recv_urb(urb_context);
466         return;
467 }
468
469 static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb)
470 {
471         int i;
472
473         for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
474                 if (ar_usb->pipes[i].ar_usb != NULL)
475                         usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
476         }
477
478         /*
479          * Flushing any pending I/O may schedule work this call will block
480          * until all scheduled work runs to completion.
481          */
482         flush_workqueue(ar_usb->wq);
483 }
484
485 static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb)
486 {
487         /*
488          * note: control pipe is no longer used
489          * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh =
490          *      ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2;
491          * ath6kl_usb_post_recv_transfers(&ar_usb->
492          *              pipes[ATH6KL_USB_PIPE_RX_CTRL],
493          *              ATH6KL_USB_RX_BUFFER_SIZE);
494          */
495
496         ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh = 1;
497
498         ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA],
499                                        ATH6KL_USB_RX_BUFFER_SIZE);
500 }
501
502 /* hif usb rx/tx completion functions */
503 static void ath6kl_usb_recv_complete(struct urb *urb)
504 {
505         struct ath6kl_urb_context *urb_context = urb->context;
506         struct ath6kl_usb_pipe *pipe = urb_context->pipe;
507         struct sk_buff *skb = NULL;
508         int status = 0;
509
510         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
511                    "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__,
512                    pipe->logical_pipe_num, urb->status, urb->actual_length,
513                    urb);
514
515         if (urb->status != 0) {
516                 status = -EIO;
517                 switch (urb->status) {
518                 case -ECONNRESET:
519                 case -ENOENT:
520                 case -ESHUTDOWN:
521                         /*
522                          * no need to spew these errors when device
523                          * removed or urb killed due to driver shutdown
524                          */
525                         status = -ECANCELED;
526                         break;
527                 default:
528                         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
529                                    "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n",
530                                    __func__, pipe->logical_pipe_num,
531                                    pipe->ep_address, urb->status);
532                         break;
533                 }
534                 goto cleanup_recv_urb;
535         }
536
537         if (urb->actual_length == 0)
538                 goto cleanup_recv_urb;
539
540         skb = urb_context->skb;
541
542         /* we are going to pass it up */
543         urb_context->skb = NULL;
544         skb_put(skb, urb->actual_length);
545
546         /* note: queue implements a lock */
547         skb_queue_tail(&pipe->io_comp_queue, skb);
548         queue_work(pipe->ar_usb->wq, &pipe->io_complete_work);
549
550 cleanup_recv_urb:
551         ath6kl_usb_cleanup_recv_urb(urb_context);
552
553         if (status == 0 &&
554             pipe->urb_cnt >= pipe->urb_cnt_thresh) {
555                 /* our free urbs are piling up, post more transfers */
556                 ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE);
557         }
558 }
559
560 static void ath6kl_usb_usb_transmit_complete(struct urb *urb)
561 {
562         struct ath6kl_urb_context *urb_context = urb->context;
563         struct ath6kl_usb_pipe *pipe = urb_context->pipe;
564         struct sk_buff *skb;
565
566         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
567                    "%s: pipe: %d, stat:%d, len:%d\n",
568                    __func__, pipe->logical_pipe_num, urb->status,
569                    urb->actual_length);
570
571         if (urb->status != 0) {
572                 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
573                            "%s:  pipe: %d, failed:%d\n",
574                            __func__, pipe->logical_pipe_num, urb->status);
575         }
576
577         skb = urb_context->skb;
578         urb_context->skb = NULL;
579         ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
580
581         /* note: queue implements a lock */
582         skb_queue_tail(&pipe->io_comp_queue, skb);
583         queue_work(pipe->ar_usb->wq, &pipe->io_complete_work);
584 }
585
586 static void ath6kl_usb_io_comp_work(struct work_struct *work)
587 {
588         struct ath6kl_usb_pipe *pipe = container_of(work,
589                                                     struct ath6kl_usb_pipe,
590                                                     io_complete_work);
591         struct ath6kl_usb *ar_usb;
592         struct sk_buff *skb;
593
594         ar_usb = pipe->ar_usb;
595
596         while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
597                 if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) {
598                         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
599                                    "ath6kl usb xmit callback buf:0x%p\n", skb);
600                         ath6kl_core_tx_complete(ar_usb->ar, skb);
601                 } else {
602                         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
603                                    "ath6kl usb recv callback buf:0x%p\n", skb);
604                         ath6kl_core_rx_complete(ar_usb->ar, skb,
605                                                 pipe->logical_pipe_num);
606                 }
607         }
608 }
609
610 #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
611 #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
612
613 static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
614 {
615         ath6kl_usb_flush_all(ar_usb);
616
617         ath6kl_usb_cleanup_pipe_resources(ar_usb);
618
619         usb_set_intfdata(ar_usb->interface, NULL);
620
621         kfree(ar_usb->diag_cmd_buffer);
622         kfree(ar_usb->diag_resp_buffer);
623         destroy_workqueue(ar_usb->wq);
624
625         kfree(ar_usb);
626 }
627
628 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
629 {
630         struct usb_device *dev = interface_to_usbdev(interface);
631         struct ath6kl_usb *ar_usb;
632         struct ath6kl_usb_pipe *pipe;
633         int status = 0;
634         int i;
635
636         /* ath6kl_usb_destroy() needs ar_usb != NULL && ar_usb->wq != NULL. */
637         ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
638         if (ar_usb == NULL)
639                 return NULL;
640         ar_usb->wq = alloc_workqueue("ath6kl_wq", 0, 0);
641         if (!ar_usb->wq) {
642                 kfree(ar_usb);
643                 return NULL;
644         }
645
646         usb_set_intfdata(interface, ar_usb);
647         spin_lock_init(&(ar_usb->cs_lock));
648         ar_usb->udev = dev;
649         ar_usb->interface = interface;
650
651         for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
652                 pipe = &ar_usb->pipes[i];
653                 INIT_WORK(&pipe->io_complete_work,
654                           ath6kl_usb_io_comp_work);
655                 skb_queue_head_init(&pipe->io_comp_queue);
656         }
657
658         ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
659         if (ar_usb->diag_cmd_buffer == NULL) {
660                 status = -ENOMEM;
661                 goto fail_ath6kl_usb_create;
662         }
663
664         ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
665                                            GFP_KERNEL);
666         if (ar_usb->diag_resp_buffer == NULL) {
667                 status = -ENOMEM;
668                 goto fail_ath6kl_usb_create;
669         }
670
671         status = ath6kl_usb_setup_pipe_resources(ar_usb);
672
673 fail_ath6kl_usb_create:
674         if (status != 0) {
675                 ath6kl_usb_destroy(ar_usb);
676                 ar_usb = NULL;
677         }
678         return ar_usb;
679 }
680
681 static void ath6kl_usb_device_detached(struct usb_interface *interface)
682 {
683         struct ath6kl_usb *ar_usb;
684
685         ar_usb = usb_get_intfdata(interface);
686         if (ar_usb == NULL)
687                 return;
688
689         ath6kl_stop_txrx(ar_usb->ar);
690
691         /* Delay to wait for the target to reboot */
692         mdelay(20);
693         ath6kl_core_cleanup(ar_usb->ar);
694         ath6kl_usb_destroy(ar_usb);
695 }
696
697 /* exported hif usb APIs for htc pipe */
698 static void hif_start(struct ath6kl *ar)
699 {
700         struct ath6kl_usb *device = ath6kl_usb_priv(ar);
701         int i;
702
703         ath6kl_usb_start_recv_pipes(device);
704
705         /* set the TX resource avail threshold for each TX pipe */
706         for (i = ATH6KL_USB_PIPE_TX_CTRL;
707              i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
708                 device->pipes[i].urb_cnt_thresh =
709                     device->pipes[i].urb_alloc / 2;
710         }
711 }
712
713 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
714                            struct sk_buff *hdr_skb, struct sk_buff *skb)
715 {
716         struct ath6kl_usb *device = ath6kl_usb_priv(ar);
717         struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
718         struct ath6kl_urb_context *urb_context;
719         int usb_status, status = 0;
720         struct urb *urb;
721         u8 *data;
722         u32 len;
723
724         ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
725                    __func__, PipeID, skb);
726
727         urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
728
729         if (urb_context == NULL) {
730                 /*
731                  * TODO: it is possible to run out of urbs if
732                  * 2 endpoints map to the same pipe ID
733                  */
734                 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
735                            "%s pipe:%d no urbs left. URB Cnt : %d\n",
736                            __func__, PipeID, pipe->urb_cnt);
737                 status = -ENOMEM;
738                 goto fail_hif_send;
739         }
740
741         urb_context->skb = skb;
742
743         data = skb->data;
744         len = skb->len;
745
746         urb = usb_alloc_urb(0, GFP_ATOMIC);
747         if (urb == NULL) {
748                 status = -ENOMEM;
749                 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
750                                             urb_context);
751                 goto fail_hif_send;
752         }
753
754         usb_fill_bulk_urb(urb,
755                           device->udev,
756                           pipe->usb_pipe_handle,
757                           data,
758                           len,
759                           ath6kl_usb_usb_transmit_complete, urb_context);
760
761         if ((len % pipe->max_packet_size) == 0) {
762                 /* hit a max packet boundary on this pipe */
763                 urb->transfer_flags |= URB_ZERO_PACKET;
764         }
765
766         ath6kl_dbg(ATH6KL_DBG_USB_BULK,
767                    "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
768                    pipe->logical_pipe_num, pipe->usb_pipe_handle,
769                    pipe->ep_address, len);
770
771         usb_anchor_urb(urb, &pipe->urb_submitted);
772         usb_status = usb_submit_urb(urb, GFP_ATOMIC);
773
774         if (usb_status) {
775                 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
776                            "ath6kl usb : usb bulk transmit failed %d\n",
777                            usb_status);
778                 usb_unanchor_urb(urb);
779                 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
780                                             urb_context);
781                 status = -EINVAL;
782         }
783         usb_free_urb(urb);
784
785 fail_hif_send:
786         return status;
787 }
788
789 static void hif_stop(struct ath6kl *ar)
790 {
791         struct ath6kl_usb *device = ath6kl_usb_priv(ar);
792
793         ath6kl_usb_flush_all(device);
794 }
795
796 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
797                                         u8 *ul_pipe, u8 *dl_pipe)
798 {
799         *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
800         *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
801 }
802
803 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
804                                        u8 *ul_pipe, u8 *dl_pipe)
805 {
806         int status = 0;
807
808         switch (svc_id) {
809         case HTC_CTRL_RSVD_SVC:
810         case WMI_CONTROL_SVC:
811                 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
812                 /* due to large control packets, shift to data pipe */
813                 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
814                 break;
815         case WMI_DATA_BE_SVC:
816         case WMI_DATA_BK_SVC:
817                 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
818                 /*
819                 * Disable rxdata2 directly, it will be enabled
820                 * if FW enable rxdata2
821                 */
822                 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
823                 break;
824         case WMI_DATA_VI_SVC:
825
826                 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
827                              ar->fw_capabilities))
828                         *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
829                 else
830                         *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
831                 /*
832                 * Disable rxdata2 directly, it will be enabled
833                 * if FW enable rxdata2
834                 */
835                 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
836                 break;
837         case WMI_DATA_VO_SVC:
838
839                 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
840                              ar->fw_capabilities))
841                         *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
842                 else
843                         *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
844                 /*
845                 * Disable rxdata2 directly, it will be enabled
846                 * if FW enable rxdata2
847                 */
848                 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
849                 break;
850         default:
851                 status = -EPERM;
852                 break;
853         }
854
855         return status;
856 }
857
858 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
859 {
860         struct ath6kl_usb *device = ath6kl_usb_priv(ar);
861
862         return device->pipes[pipe_id].urb_cnt;
863 }
864
865 static void hif_detach_htc(struct ath6kl *ar)
866 {
867         struct ath6kl_usb *device = ath6kl_usb_priv(ar);
868
869         ath6kl_usb_flush_all(device);
870 }
871
872 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
873                                    u8 req, u16 value, u16 index, void *data,
874                                    u32 size)
875 {
876         u8 *buf = NULL;
877         int ret;
878
879         if (size > 0) {
880                 buf = kmemdup(data, size, GFP_KERNEL);
881                 if (buf == NULL)
882                         return -ENOMEM;
883         }
884
885         /* note: if successful returns number of bytes transfered */
886         ret = usb_control_msg(ar_usb->udev,
887                               usb_sndctrlpipe(ar_usb->udev, 0),
888                               req,
889                               USB_DIR_OUT | USB_TYPE_VENDOR |
890                               USB_RECIP_DEVICE, value, index, buf,
891                               size, 1000);
892
893         if (ret < 0) {
894                 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
895                 kfree(buf);
896                 return ret;
897         }
898
899         kfree(buf);
900
901         return 0;
902 }
903
904 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
905                                   u8 req, u16 value, u16 index, void *data,
906                                   u32 size)
907 {
908         u8 *buf = NULL;
909         int ret;
910
911         if (size > 0) {
912                 buf = kmalloc(size, GFP_KERNEL);
913                 if (buf == NULL)
914                         return -ENOMEM;
915         }
916
917         /* note: if successful returns number of bytes transfered */
918         ret = usb_control_msg(ar_usb->udev,
919                                  usb_rcvctrlpipe(ar_usb->udev, 0),
920                                  req,
921                                  USB_DIR_IN | USB_TYPE_VENDOR |
922                                  USB_RECIP_DEVICE, value, index, buf,
923                                  size, 2000);
924
925         if (ret < 0) {
926                 ath6kl_warn("Failed to read usb control message: %d\n", ret);
927                 kfree(buf);
928                 return ret;
929         }
930
931         memcpy((u8 *) data, buf, size);
932
933         kfree(buf);
934
935         return 0;
936 }
937
938 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
939                                      u8 req_val, u8 *req_buf, u32 req_len,
940                                      u8 resp_val, u8 *resp_buf, u32 *resp_len)
941 {
942         int ret;
943
944         /* send command */
945         ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
946                                          req_buf, req_len);
947
948         if (ret != 0)
949                 return ret;
950
951         if (resp_buf == NULL) {
952                 /* no expected response */
953                 return ret;
954         }
955
956         /* get response */
957         ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
958                                         resp_buf, *resp_len);
959
960         return ret;
961 }
962
963 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
964 {
965         struct ath6kl_usb *ar_usb = ar->hif_priv;
966         struct ath6kl_usb_ctrl_diag_resp_read *resp;
967         struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
968         u32 resp_len;
969         int ret;
970
971         cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
972
973         memset(cmd, 0, sizeof(*cmd));
974         cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
975         cmd->address = cpu_to_le32(address);
976         resp_len = sizeof(*resp);
977
978         ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
979                                 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
980                                 (u8 *) cmd,
981                                 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
982                                 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
983                                 ar_usb->diag_resp_buffer, &resp_len);
984
985         if (ret) {
986                 ath6kl_warn("diag read32 failed: %d\n", ret);
987                 return ret;
988         }
989
990         resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
991                 ar_usb->diag_resp_buffer;
992
993         *data = le32_to_cpu(resp->value);
994
995         return ret;
996 }
997
998 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
999 {
1000         struct ath6kl_usb *ar_usb = ar->hif_priv;
1001         struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
1002         int ret;
1003
1004         cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
1005
1006         memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
1007         cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
1008         cmd->address = cpu_to_le32(address);
1009         cmd->value = data;
1010
1011         ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
1012                                            ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
1013                                            (u8 *) cmd,
1014                                            sizeof(*cmd),
1015                                            0, NULL, NULL);
1016         if (ret) {
1017                 ath6kl_warn("diag_write32 failed: %d\n", ret);
1018                 return ret;
1019         }
1020
1021         return 0;
1022 }
1023
1024 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1025 {
1026         struct ath6kl_usb *ar_usb = ar->hif_priv;
1027         int ret;
1028
1029         /* get response */
1030         ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1031                                         ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1032                                         0, 0, buf, len);
1033         if (ret) {
1034                 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1035                            ret);
1036                 return ret;
1037         }
1038
1039         return 0;
1040 }
1041
1042 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1043 {
1044         struct ath6kl_usb *ar_usb = ar->hif_priv;
1045         int ret;
1046
1047         /* send command */
1048         ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1049                                          ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1050                                          0, 0, buf, len);
1051         if (ret) {
1052                 ath6kl_err("unable to send the bmi data to the device: %d\n",
1053                            ret);
1054                 return ret;
1055         }
1056
1057         return 0;
1058 }
1059
1060 static int ath6kl_usb_power_on(struct ath6kl *ar)
1061 {
1062         hif_start(ar);
1063         return 0;
1064 }
1065
1066 static int ath6kl_usb_power_off(struct ath6kl *ar)
1067 {
1068         hif_detach_htc(ar);
1069         return 0;
1070 }
1071
1072 static void ath6kl_usb_stop(struct ath6kl *ar)
1073 {
1074         hif_stop(ar);
1075 }
1076
1077 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1078 {
1079         /*
1080          * USB doesn't support it. Just return.
1081          */
1082         return;
1083 }
1084
1085 static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
1086 {
1087         /*
1088          * cfg80211 suspend/WOW currently not supported for USB.
1089          */
1090         return 0;
1091 }
1092
1093 static int ath6kl_usb_resume(struct ath6kl *ar)
1094 {
1095         /*
1096          * cfg80211 resume currently not supported for USB.
1097          */
1098         return 0;
1099 }
1100
1101 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1102         .diag_read32 = ath6kl_usb_diag_read32,
1103         .diag_write32 = ath6kl_usb_diag_write32,
1104         .bmi_read = ath6kl_usb_bmi_read,
1105         .bmi_write = ath6kl_usb_bmi_write,
1106         .power_on = ath6kl_usb_power_on,
1107         .power_off = ath6kl_usb_power_off,
1108         .stop = ath6kl_usb_stop,
1109         .pipe_send = ath6kl_usb_send,
1110         .pipe_get_default = ath6kl_usb_get_default_pipe,
1111         .pipe_map_service = ath6kl_usb_map_service_pipe,
1112         .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1113         .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1114         .suspend = ath6kl_usb_suspend,
1115         .resume = ath6kl_usb_resume,
1116 };
1117
1118 /* ath6kl usb driver registered functions */
1119 static int ath6kl_usb_probe(struct usb_interface *interface,
1120                             const struct usb_device_id *id)
1121 {
1122         struct usb_device *dev = interface_to_usbdev(interface);
1123         struct ath6kl *ar;
1124         struct ath6kl_usb *ar_usb = NULL;
1125         int vendor_id, product_id;
1126         int ret = 0;
1127
1128         usb_get_dev(dev);
1129
1130         vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1131         product_id = le16_to_cpu(dev->descriptor.idProduct);
1132
1133         ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1134         ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1135
1136         if (interface->cur_altsetting)
1137                 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1138                            interface->cur_altsetting->desc.bInterfaceNumber);
1139
1140
1141         if (dev->speed == USB_SPEED_HIGH)
1142                 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1143         else
1144                 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1145
1146         ar_usb = ath6kl_usb_create(interface);
1147
1148         if (ar_usb == NULL) {
1149                 ret = -ENOMEM;
1150                 goto err_usb_put;
1151         }
1152
1153         ar = ath6kl_core_create(&ar_usb->udev->dev);
1154         if (ar == NULL) {
1155                 ath6kl_err("Failed to alloc ath6kl core\n");
1156                 ret = -ENOMEM;
1157                 goto err_usb_destroy;
1158         }
1159
1160         ar->hif_priv = ar_usb;
1161         ar->hif_type = ATH6KL_HIF_TYPE_USB;
1162         ar->hif_ops = &ath6kl_usb_ops;
1163         ar->mbox_info.block_size = 16;
1164         ar->bmi.max_data_size = 252;
1165
1166         ar_usb->ar = ar;
1167
1168         ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1169         if (ret) {
1170                 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1171                 goto err_core_free;
1172         }
1173
1174         return ret;
1175
1176 err_core_free:
1177         ath6kl_core_destroy(ar);
1178 err_usb_destroy:
1179         ath6kl_usb_destroy(ar_usb);
1180 err_usb_put:
1181         usb_put_dev(dev);
1182
1183         return ret;
1184 }
1185
1186 static void ath6kl_usb_remove(struct usb_interface *interface)
1187 {
1188         usb_put_dev(interface_to_usbdev(interface));
1189         ath6kl_usb_device_detached(interface);
1190 }
1191
1192 #ifdef CONFIG_PM
1193
1194 static int ath6kl_usb_pm_suspend(struct usb_interface *interface,
1195                               pm_message_t message)
1196 {
1197         struct ath6kl_usb *device;
1198         device = usb_get_intfdata(interface);
1199
1200         ath6kl_usb_flush_all(device);
1201         return 0;
1202 }
1203
1204 static int ath6kl_usb_pm_resume(struct usb_interface *interface)
1205 {
1206         struct ath6kl_usb *device;
1207         device = usb_get_intfdata(interface);
1208
1209         ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1210                                        ATH6KL_USB_RX_BUFFER_SIZE);
1211         ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1212                                        ATH6KL_USB_RX_BUFFER_SIZE);
1213
1214         return 0;
1215 }
1216
1217 #else
1218
1219 #define ath6kl_usb_pm_suspend NULL
1220 #define ath6kl_usb_pm_resume NULL
1221
1222 #endif
1223
1224 /* table of devices that work with this driver */
1225 static const struct usb_device_id ath6kl_usb_ids[] = {
1226         {USB_DEVICE(0x0cf3, 0x9375)},
1227         {USB_DEVICE(0x0cf3, 0x9374)},
1228         {USB_DEVICE(0x04da, 0x390d)},
1229         { /* Terminating entry */ },
1230 };
1231
1232 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1233
1234 static struct usb_driver ath6kl_usb_driver = {
1235         .name = "ath6kl_usb",
1236         .probe = ath6kl_usb_probe,
1237         .suspend = ath6kl_usb_pm_suspend,
1238         .resume = ath6kl_usb_pm_resume,
1239         .disconnect = ath6kl_usb_remove,
1240         .id_table = ath6kl_usb_ids,
1241         .supports_autosuspend = true,
1242         .disable_hub_initiated_lpm = 1,
1243 };
1244
1245 module_usb_driver(ath6kl_usb_driver);
1246
1247 MODULE_AUTHOR("Atheros Communications, Inc.");
1248 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1249 MODULE_LICENSE("Dual BSD/GPL");
1250 MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
1251 MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
1252 MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
1253 MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
1254 MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
1255 MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
1256 MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE);
1257 MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
1258 MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
1259 MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
1260 MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
1261 MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);
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