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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[mirror_ubuntu-zesty-kernel.git] / drivers / bluetooth / btusb.c
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE 0x01
51 #define BTUSB_DIGIANSWER 0x02
52 #define BTUSB_CSR 0x04
53 #define BTUSB_SNIFFER 0x08
54 #define BTUSB_BCM92035 0x10
55 #define BTUSB_BROKEN_ISOC 0x20
56 #define BTUSB_WRONG_SCO_MTU 0x40
57
58 static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62 /* Apple MacBookPro 7,1 */
63 { USB_DEVICE(0x05ac, 0x8213) },
64
65 /* Apple iMac11,1 */
66 { USB_DEVICE(0x05ac, 0x8215) },
67
68 /* Apple MacBookPro6,2 */
69 { USB_DEVICE(0x05ac, 0x8218) },
70
71 /* Apple MacBookAir3,1, MacBookAir3,2 */
72 { USB_DEVICE(0x05ac, 0x821b) },
73
74 /* Apple MacBookPro8,2 */
75 { USB_DEVICE(0x05ac, 0x821a) },
76
77 /* AVM BlueFRITZ! USB v2.0 */
78 { USB_DEVICE(0x057c, 0x3800) },
79
80 /* Bluetooth Ultraport Module from IBM */
81 { USB_DEVICE(0x04bf, 0x030a) },
82
83 /* ALPS Modules with non-standard id */
84 { USB_DEVICE(0x044e, 0x3001) },
85 { USB_DEVICE(0x044e, 0x3002) },
86
87 /* Ericsson with non-standard id */
88 { USB_DEVICE(0x0bdb, 0x1002) },
89
90 /* Canyon CN-BTU1 with HID interfaces */
91 { USB_DEVICE(0x0c10, 0x0000) },
92
93 { } /* Terminating entry */
94 };
95
96 MODULE_DEVICE_TABLE(usb, btusb_table);
97
98 static struct usb_device_id blacklist_table[] = {
99 /* CSR BlueCore devices */
100 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
101
102 /* Broadcom BCM2033 without firmware */
103 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
104
105 /* Atheros 3011 with sflash firmware */
106 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
107
108 /* Atheros AR9285 Malbec with sflash firmware */
109 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
110
111 /* Atheros 3012 with sflash firmware */
112 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_IGNORE },
113
114 /* Atheros AR5BBU12 with sflash firmware */
115 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
116
117 /* Broadcom BCM2035 */
118 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
119 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
120 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
121
122 /* Broadcom BCM2045 */
123 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
124 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
125
126 /* IBM/Lenovo ThinkPad with Broadcom chip */
127 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
128 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
129
130 /* HP laptop with Broadcom chip */
131 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
132
133 /* Dell laptop with Broadcom chip */
134 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
135
136 /* Dell Wireless 370 and 410 devices */
137 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
138 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
139
140 /* Belkin F8T012 and F8T013 devices */
141 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
142 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
143
144 /* Asus WL-BTD202 device */
145 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
146
147 /* Kensington Bluetooth USB adapter */
148 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
149
150 /* RTX Telecom based adapters with buggy SCO support */
151 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
152 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
153
154 /* CONWISE Technology based adapters with buggy SCO support */
155 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
156
157 /* Digianswer devices */
158 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
159 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
160
161 /* CSR BlueCore Bluetooth Sniffer */
162 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
163
164 /* Frontline ComProbe Bluetooth Sniffer */
165 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
166
167 { } /* Terminating entry */
168 };
169
170 #define BTUSB_MAX_ISOC_FRAMES 10
171
172 #define BTUSB_INTR_RUNNING 0
173 #define BTUSB_BULK_RUNNING 1
174 #define BTUSB_ISOC_RUNNING 2
175 #define BTUSB_SUSPENDING 3
176 #define BTUSB_DID_ISO_RESUME 4
177
178 struct btusb_data {
179 struct hci_dev *hdev;
180 struct usb_device *udev;
181 struct usb_interface *intf;
182 struct usb_interface *isoc;
183
184 spinlock_t lock;
185
186 unsigned long flags;
187
188 struct work_struct work;
189 struct work_struct waker;
190
191 struct usb_anchor tx_anchor;
192 struct usb_anchor intr_anchor;
193 struct usb_anchor bulk_anchor;
194 struct usb_anchor isoc_anchor;
195 struct usb_anchor deferred;
196 int tx_in_flight;
197 spinlock_t txlock;
198
199 struct usb_endpoint_descriptor *intr_ep;
200 struct usb_endpoint_descriptor *bulk_tx_ep;
201 struct usb_endpoint_descriptor *bulk_rx_ep;
202 struct usb_endpoint_descriptor *isoc_tx_ep;
203 struct usb_endpoint_descriptor *isoc_rx_ep;
204
205 __u8 cmdreq_type;
206
207 unsigned int sco_num;
208 int isoc_altsetting;
209 int suspend_count;
210 };
211
212 static int inc_tx(struct btusb_data *data)
213 {
214 unsigned long flags;
215 int rv;
216
217 spin_lock_irqsave(&data->txlock, flags);
218 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
219 if (!rv)
220 data->tx_in_flight++;
221 spin_unlock_irqrestore(&data->txlock, flags);
222
223 return rv;
224 }
225
226 static void btusb_intr_complete(struct urb *urb)
227 {
228 struct hci_dev *hdev = urb->context;
229 struct btusb_data *data = hdev->driver_data;
230 int err;
231
232 BT_DBG("%s urb %p status %d count %d", hdev->name,
233 urb, urb->status, urb->actual_length);
234
235 if (!test_bit(HCI_RUNNING, &hdev->flags))
236 return;
237
238 if (urb->status == 0) {
239 hdev->stat.byte_rx += urb->actual_length;
240
241 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
242 urb->transfer_buffer,
243 urb->actual_length) < 0) {
244 BT_ERR("%s corrupted event packet", hdev->name);
245 hdev->stat.err_rx++;
246 }
247 }
248
249 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
250 return;
251
252 usb_mark_last_busy(data->udev);
253 usb_anchor_urb(urb, &data->intr_anchor);
254
255 err = usb_submit_urb(urb, GFP_ATOMIC);
256 if (err < 0) {
257 if (err != -EPERM)
258 BT_ERR("%s urb %p failed to resubmit (%d)",
259 hdev->name, urb, -err);
260 usb_unanchor_urb(urb);
261 }
262 }
263
264 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
265 {
266 struct btusb_data *data = hdev->driver_data;
267 struct urb *urb;
268 unsigned char *buf;
269 unsigned int pipe;
270 int err, size;
271
272 BT_DBG("%s", hdev->name);
273
274 if (!data->intr_ep)
275 return -ENODEV;
276
277 urb = usb_alloc_urb(0, mem_flags);
278 if (!urb)
279 return -ENOMEM;
280
281 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
282
283 buf = kmalloc(size, mem_flags);
284 if (!buf) {
285 usb_free_urb(urb);
286 return -ENOMEM;
287 }
288
289 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
290
291 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
292 btusb_intr_complete, hdev,
293 data->intr_ep->bInterval);
294
295 urb->transfer_flags |= URB_FREE_BUFFER;
296
297 usb_anchor_urb(urb, &data->intr_anchor);
298
299 err = usb_submit_urb(urb, mem_flags);
300 if (err < 0) {
301 BT_ERR("%s urb %p submission failed (%d)",
302 hdev->name, urb, -err);
303 usb_unanchor_urb(urb);
304 }
305
306 usb_free_urb(urb);
307
308 return err;
309 }
310
311 static void btusb_bulk_complete(struct urb *urb)
312 {
313 struct hci_dev *hdev = urb->context;
314 struct btusb_data *data = hdev->driver_data;
315 int err;
316
317 BT_DBG("%s urb %p status %d count %d", hdev->name,
318 urb, urb->status, urb->actual_length);
319
320 if (!test_bit(HCI_RUNNING, &hdev->flags))
321 return;
322
323 if (urb->status == 0) {
324 hdev->stat.byte_rx += urb->actual_length;
325
326 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
327 urb->transfer_buffer,
328 urb->actual_length) < 0) {
329 BT_ERR("%s corrupted ACL packet", hdev->name);
330 hdev->stat.err_rx++;
331 }
332 }
333
334 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
335 return;
336
337 usb_anchor_urb(urb, &data->bulk_anchor);
338 usb_mark_last_busy(data->udev);
339
340 err = usb_submit_urb(urb, GFP_ATOMIC);
341 if (err < 0) {
342 if (err != -EPERM)
343 BT_ERR("%s urb %p failed to resubmit (%d)",
344 hdev->name, urb, -err);
345 usb_unanchor_urb(urb);
346 }
347 }
348
349 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
350 {
351 struct btusb_data *data = hdev->driver_data;
352 struct urb *urb;
353 unsigned char *buf;
354 unsigned int pipe;
355 int err, size = HCI_MAX_FRAME_SIZE;
356
357 BT_DBG("%s", hdev->name);
358
359 if (!data->bulk_rx_ep)
360 return -ENODEV;
361
362 urb = usb_alloc_urb(0, mem_flags);
363 if (!urb)
364 return -ENOMEM;
365
366 buf = kmalloc(size, mem_flags);
367 if (!buf) {
368 usb_free_urb(urb);
369 return -ENOMEM;
370 }
371
372 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
373
374 usb_fill_bulk_urb(urb, data->udev, pipe,
375 buf, size, btusb_bulk_complete, hdev);
376
377 urb->transfer_flags |= URB_FREE_BUFFER;
378
379 usb_mark_last_busy(data->udev);
380 usb_anchor_urb(urb, &data->bulk_anchor);
381
382 err = usb_submit_urb(urb, mem_flags);
383 if (err < 0) {
384 BT_ERR("%s urb %p submission failed (%d)",
385 hdev->name, urb, -err);
386 usb_unanchor_urb(urb);
387 }
388
389 usb_free_urb(urb);
390
391 return err;
392 }
393
394 static void btusb_isoc_complete(struct urb *urb)
395 {
396 struct hci_dev *hdev = urb->context;
397 struct btusb_data *data = hdev->driver_data;
398 int i, err;
399
400 BT_DBG("%s urb %p status %d count %d", hdev->name,
401 urb, urb->status, urb->actual_length);
402
403 if (!test_bit(HCI_RUNNING, &hdev->flags))
404 return;
405
406 if (urb->status == 0) {
407 for (i = 0; i < urb->number_of_packets; i++) {
408 unsigned int offset = urb->iso_frame_desc[i].offset;
409 unsigned int length = urb->iso_frame_desc[i].actual_length;
410
411 if (urb->iso_frame_desc[i].status)
412 continue;
413
414 hdev->stat.byte_rx += length;
415
416 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
417 urb->transfer_buffer + offset,
418 length) < 0) {
419 BT_ERR("%s corrupted SCO packet", hdev->name);
420 hdev->stat.err_rx++;
421 }
422 }
423 }
424
425 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
426 return;
427
428 usb_anchor_urb(urb, &data->isoc_anchor);
429
430 err = usb_submit_urb(urb, GFP_ATOMIC);
431 if (err < 0) {
432 if (err != -EPERM)
433 BT_ERR("%s urb %p failed to resubmit (%d)",
434 hdev->name, urb, -err);
435 usb_unanchor_urb(urb);
436 }
437 }
438
439 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
440 {
441 int i, offset = 0;
442
443 BT_DBG("len %d mtu %d", len, mtu);
444
445 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
446 i++, offset += mtu, len -= mtu) {
447 urb->iso_frame_desc[i].offset = offset;
448 urb->iso_frame_desc[i].length = mtu;
449 }
450
451 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
452 urb->iso_frame_desc[i].offset = offset;
453 urb->iso_frame_desc[i].length = len;
454 i++;
455 }
456
457 urb->number_of_packets = i;
458 }
459
460 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
461 {
462 struct btusb_data *data = hdev->driver_data;
463 struct urb *urb;
464 unsigned char *buf;
465 unsigned int pipe;
466 int err, size;
467
468 BT_DBG("%s", hdev->name);
469
470 if (!data->isoc_rx_ep)
471 return -ENODEV;
472
473 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
474 if (!urb)
475 return -ENOMEM;
476
477 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
478 BTUSB_MAX_ISOC_FRAMES;
479
480 buf = kmalloc(size, mem_flags);
481 if (!buf) {
482 usb_free_urb(urb);
483 return -ENOMEM;
484 }
485
486 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
487
488 urb->dev = data->udev;
489 urb->pipe = pipe;
490 urb->context = hdev;
491 urb->complete = btusb_isoc_complete;
492 urb->interval = data->isoc_rx_ep->bInterval;
493
494 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
495 urb->transfer_buffer = buf;
496 urb->transfer_buffer_length = size;
497
498 __fill_isoc_descriptor(urb, size,
499 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
500
501 usb_anchor_urb(urb, &data->isoc_anchor);
502
503 err = usb_submit_urb(urb, mem_flags);
504 if (err < 0) {
505 BT_ERR("%s urb %p submission failed (%d)",
506 hdev->name, urb, -err);
507 usb_unanchor_urb(urb);
508 }
509
510 usb_free_urb(urb);
511
512 return err;
513 }
514
515 static void btusb_tx_complete(struct urb *urb)
516 {
517 struct sk_buff *skb = urb->context;
518 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
519 struct btusb_data *data = hdev->driver_data;
520
521 BT_DBG("%s urb %p status %d count %d", hdev->name,
522 urb, urb->status, urb->actual_length);
523
524 if (!test_bit(HCI_RUNNING, &hdev->flags))
525 goto done;
526
527 if (!urb->status)
528 hdev->stat.byte_tx += urb->transfer_buffer_length;
529 else
530 hdev->stat.err_tx++;
531
532 done:
533 spin_lock(&data->txlock);
534 data->tx_in_flight--;
535 spin_unlock(&data->txlock);
536
537 kfree(urb->setup_packet);
538
539 kfree_skb(skb);
540 }
541
542 static void btusb_isoc_tx_complete(struct urb *urb)
543 {
544 struct sk_buff *skb = urb->context;
545 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
546
547 BT_DBG("%s urb %p status %d count %d", hdev->name,
548 urb, urb->status, urb->actual_length);
549
550 if (!test_bit(HCI_RUNNING, &hdev->flags))
551 goto done;
552
553 if (!urb->status)
554 hdev->stat.byte_tx += urb->transfer_buffer_length;
555 else
556 hdev->stat.err_tx++;
557
558 done:
559 kfree(urb->setup_packet);
560
561 kfree_skb(skb);
562 }
563
564 static int btusb_open(struct hci_dev *hdev)
565 {
566 struct btusb_data *data = hdev->driver_data;
567 int err;
568
569 BT_DBG("%s", hdev->name);
570
571 err = usb_autopm_get_interface(data->intf);
572 if (err < 0)
573 return err;
574
575 data->intf->needs_remote_wakeup = 1;
576
577 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
578 goto done;
579
580 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
581 goto done;
582
583 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
584 if (err < 0)
585 goto failed;
586
587 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
588 if (err < 0) {
589 usb_kill_anchored_urbs(&data->intr_anchor);
590 goto failed;
591 }
592
593 set_bit(BTUSB_BULK_RUNNING, &data->flags);
594 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
595
596 done:
597 usb_autopm_put_interface(data->intf);
598 return 0;
599
600 failed:
601 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
602 clear_bit(HCI_RUNNING, &hdev->flags);
603 usb_autopm_put_interface(data->intf);
604 return err;
605 }
606
607 static void btusb_stop_traffic(struct btusb_data *data)
608 {
609 usb_kill_anchored_urbs(&data->intr_anchor);
610 usb_kill_anchored_urbs(&data->bulk_anchor);
611 usb_kill_anchored_urbs(&data->isoc_anchor);
612 }
613
614 static int btusb_close(struct hci_dev *hdev)
615 {
616 struct btusb_data *data = hdev->driver_data;
617 int err;
618
619 BT_DBG("%s", hdev->name);
620
621 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
622 return 0;
623
624 cancel_work_sync(&data->work);
625 cancel_work_sync(&data->waker);
626
627 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
628 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
629 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
630
631 btusb_stop_traffic(data);
632 err = usb_autopm_get_interface(data->intf);
633 if (err < 0)
634 goto failed;
635
636 data->intf->needs_remote_wakeup = 0;
637 usb_autopm_put_interface(data->intf);
638
639 failed:
640 usb_scuttle_anchored_urbs(&data->deferred);
641 return 0;
642 }
643
644 static int btusb_flush(struct hci_dev *hdev)
645 {
646 struct btusb_data *data = hdev->driver_data;
647
648 BT_DBG("%s", hdev->name);
649
650 usb_kill_anchored_urbs(&data->tx_anchor);
651
652 return 0;
653 }
654
655 static int btusb_send_frame(struct sk_buff *skb)
656 {
657 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
658 struct btusb_data *data = hdev->driver_data;
659 struct usb_ctrlrequest *dr;
660 struct urb *urb;
661 unsigned int pipe;
662 int err;
663
664 BT_DBG("%s", hdev->name);
665
666 if (!test_bit(HCI_RUNNING, &hdev->flags))
667 return -EBUSY;
668
669 switch (bt_cb(skb)->pkt_type) {
670 case HCI_COMMAND_PKT:
671 urb = usb_alloc_urb(0, GFP_ATOMIC);
672 if (!urb)
673 return -ENOMEM;
674
675 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
676 if (!dr) {
677 usb_free_urb(urb);
678 return -ENOMEM;
679 }
680
681 dr->bRequestType = data->cmdreq_type;
682 dr->bRequest = 0;
683 dr->wIndex = 0;
684 dr->wValue = 0;
685 dr->wLength = __cpu_to_le16(skb->len);
686
687 pipe = usb_sndctrlpipe(data->udev, 0x00);
688
689 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
690 skb->data, skb->len, btusb_tx_complete, skb);
691
692 hdev->stat.cmd_tx++;
693 break;
694
695 case HCI_ACLDATA_PKT:
696 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
697 hdev->conn_hash.le_num < 1))
698 return -ENODEV;
699
700 urb = usb_alloc_urb(0, GFP_ATOMIC);
701 if (!urb)
702 return -ENOMEM;
703
704 pipe = usb_sndbulkpipe(data->udev,
705 data->bulk_tx_ep->bEndpointAddress);
706
707 usb_fill_bulk_urb(urb, data->udev, pipe,
708 skb->data, skb->len, btusb_tx_complete, skb);
709
710 hdev->stat.acl_tx++;
711 break;
712
713 case HCI_SCODATA_PKT:
714 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
715 return -ENODEV;
716
717 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
718 if (!urb)
719 return -ENOMEM;
720
721 pipe = usb_sndisocpipe(data->udev,
722 data->isoc_tx_ep->bEndpointAddress);
723
724 usb_fill_int_urb(urb, data->udev, pipe,
725 skb->data, skb->len, btusb_isoc_tx_complete,
726 skb, data->isoc_tx_ep->bInterval);
727
728 urb->transfer_flags = URB_ISO_ASAP;
729
730 __fill_isoc_descriptor(urb, skb->len,
731 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
732
733 hdev->stat.sco_tx++;
734 goto skip_waking;
735
736 default:
737 return -EILSEQ;
738 }
739
740 err = inc_tx(data);
741 if (err) {
742 usb_anchor_urb(urb, &data->deferred);
743 schedule_work(&data->waker);
744 err = 0;
745 goto done;
746 }
747
748 skip_waking:
749 usb_anchor_urb(urb, &data->tx_anchor);
750
751 err = usb_submit_urb(urb, GFP_ATOMIC);
752 if (err < 0) {
753 BT_ERR("%s urb %p submission failed", hdev->name, urb);
754 kfree(urb->setup_packet);
755 usb_unanchor_urb(urb);
756 } else {
757 usb_mark_last_busy(data->udev);
758 }
759
760 usb_free_urb(urb);
761
762 done:
763 return err;
764 }
765
766 static void btusb_destruct(struct hci_dev *hdev)
767 {
768 struct btusb_data *data = hdev->driver_data;
769
770 BT_DBG("%s", hdev->name);
771
772 kfree(data);
773 }
774
775 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
776 {
777 struct btusb_data *data = hdev->driver_data;
778
779 BT_DBG("%s evt %d", hdev->name, evt);
780
781 if (hdev->conn_hash.sco_num != data->sco_num) {
782 data->sco_num = hdev->conn_hash.sco_num;
783 schedule_work(&data->work);
784 }
785 }
786
787 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
788 {
789 struct btusb_data *data = hdev->driver_data;
790 struct usb_interface *intf = data->isoc;
791 struct usb_endpoint_descriptor *ep_desc;
792 int i, err;
793
794 if (!data->isoc)
795 return -ENODEV;
796
797 err = usb_set_interface(data->udev, 1, altsetting);
798 if (err < 0) {
799 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
800 return err;
801 }
802
803 data->isoc_altsetting = altsetting;
804
805 data->isoc_tx_ep = NULL;
806 data->isoc_rx_ep = NULL;
807
808 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
809 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
810
811 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
812 data->isoc_tx_ep = ep_desc;
813 continue;
814 }
815
816 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
817 data->isoc_rx_ep = ep_desc;
818 continue;
819 }
820 }
821
822 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
823 BT_ERR("%s invalid SCO descriptors", hdev->name);
824 return -ENODEV;
825 }
826
827 return 0;
828 }
829
830 static void btusb_work(struct work_struct *work)
831 {
832 struct btusb_data *data = container_of(work, struct btusb_data, work);
833 struct hci_dev *hdev = data->hdev;
834 int err;
835
836 if (hdev->conn_hash.sco_num > 0) {
837 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
838 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
839 if (err < 0) {
840 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
841 usb_kill_anchored_urbs(&data->isoc_anchor);
842 return;
843 }
844
845 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
846 }
847 if (data->isoc_altsetting != 2) {
848 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
849 usb_kill_anchored_urbs(&data->isoc_anchor);
850
851 if (__set_isoc_interface(hdev, 2) < 0)
852 return;
853 }
854
855 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
856 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
857 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
858 else
859 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
860 }
861 } else {
862 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
863 usb_kill_anchored_urbs(&data->isoc_anchor);
864
865 __set_isoc_interface(hdev, 0);
866 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
867 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
868 }
869 }
870
871 static void btusb_waker(struct work_struct *work)
872 {
873 struct btusb_data *data = container_of(work, struct btusb_data, waker);
874 int err;
875
876 err = usb_autopm_get_interface(data->intf);
877 if (err < 0)
878 return;
879
880 usb_autopm_put_interface(data->intf);
881 }
882
883 static int btusb_probe(struct usb_interface *intf,
884 const struct usb_device_id *id)
885 {
886 struct usb_endpoint_descriptor *ep_desc;
887 struct btusb_data *data;
888 struct hci_dev *hdev;
889 int i, err;
890
891 BT_DBG("intf %p id %p", intf, id);
892
893 /* interface numbers are hardcoded in the spec */
894 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
895 return -ENODEV;
896
897 if (!id->driver_info) {
898 const struct usb_device_id *match;
899 match = usb_match_id(intf, blacklist_table);
900 if (match)
901 id = match;
902 }
903
904 if (id->driver_info == BTUSB_IGNORE)
905 return -ENODEV;
906
907 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
908 return -ENODEV;
909
910 if (ignore_csr && id->driver_info & BTUSB_CSR)
911 return -ENODEV;
912
913 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
914 return -ENODEV;
915
916 data = kzalloc(sizeof(*data), GFP_KERNEL);
917 if (!data)
918 return -ENOMEM;
919
920 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
921 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
922
923 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
924 data->intr_ep = ep_desc;
925 continue;
926 }
927
928 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
929 data->bulk_tx_ep = ep_desc;
930 continue;
931 }
932
933 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
934 data->bulk_rx_ep = ep_desc;
935 continue;
936 }
937 }
938
939 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
940 kfree(data);
941 return -ENODEV;
942 }
943
944 data->cmdreq_type = USB_TYPE_CLASS;
945
946 data->udev = interface_to_usbdev(intf);
947 data->intf = intf;
948
949 spin_lock_init(&data->lock);
950
951 INIT_WORK(&data->work, btusb_work);
952 INIT_WORK(&data->waker, btusb_waker);
953 spin_lock_init(&data->txlock);
954
955 init_usb_anchor(&data->tx_anchor);
956 init_usb_anchor(&data->intr_anchor);
957 init_usb_anchor(&data->bulk_anchor);
958 init_usb_anchor(&data->isoc_anchor);
959 init_usb_anchor(&data->deferred);
960
961 hdev = hci_alloc_dev();
962 if (!hdev) {
963 kfree(data);
964 return -ENOMEM;
965 }
966
967 hdev->bus = HCI_USB;
968 hdev->driver_data = data;
969
970 data->hdev = hdev;
971
972 SET_HCIDEV_DEV(hdev, &intf->dev);
973
974 hdev->open = btusb_open;
975 hdev->close = btusb_close;
976 hdev->flush = btusb_flush;
977 hdev->send = btusb_send_frame;
978 hdev->destruct = btusb_destruct;
979 hdev->notify = btusb_notify;
980
981 hdev->owner = THIS_MODULE;
982
983 /* Interface numbers are hardcoded in the specification */
984 data->isoc = usb_ifnum_to_if(data->udev, 1);
985
986 if (!reset)
987 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
988
989 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
990 if (!disable_scofix)
991 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
992 }
993
994 if (id->driver_info & BTUSB_BROKEN_ISOC)
995 data->isoc = NULL;
996
997 if (id->driver_info & BTUSB_DIGIANSWER) {
998 data->cmdreq_type = USB_TYPE_VENDOR;
999 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1000 }
1001
1002 if (id->driver_info & BTUSB_CSR) {
1003 struct usb_device *udev = data->udev;
1004
1005 /* Old firmware would otherwise execute USB reset */
1006 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1007 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1008 }
1009
1010 if (id->driver_info & BTUSB_SNIFFER) {
1011 struct usb_device *udev = data->udev;
1012
1013 /* New sniffer firmware has crippled HCI interface */
1014 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1015 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1016
1017 data->isoc = NULL;
1018 }
1019
1020 if (id->driver_info & BTUSB_BCM92035) {
1021 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1022 struct sk_buff *skb;
1023
1024 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1025 if (skb) {
1026 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1027 skb_queue_tail(&hdev->driver_init, skb);
1028 }
1029 }
1030
1031 if (data->isoc) {
1032 err = usb_driver_claim_interface(&btusb_driver,
1033 data->isoc, data);
1034 if (err < 0) {
1035 hci_free_dev(hdev);
1036 kfree(data);
1037 return err;
1038 }
1039 }
1040
1041 err = hci_register_dev(hdev);
1042 if (err < 0) {
1043 hci_free_dev(hdev);
1044 kfree(data);
1045 return err;
1046 }
1047
1048 usb_set_intfdata(intf, data);
1049
1050 return 0;
1051 }
1052
1053 static void btusb_disconnect(struct usb_interface *intf)
1054 {
1055 struct btusb_data *data = usb_get_intfdata(intf);
1056 struct hci_dev *hdev;
1057
1058 BT_DBG("intf %p", intf);
1059
1060 if (!data)
1061 return;
1062
1063 hdev = data->hdev;
1064
1065 __hci_dev_hold(hdev);
1066
1067 usb_set_intfdata(data->intf, NULL);
1068
1069 if (data->isoc)
1070 usb_set_intfdata(data->isoc, NULL);
1071
1072 hci_unregister_dev(hdev);
1073
1074 if (intf == data->isoc)
1075 usb_driver_release_interface(&btusb_driver, data->intf);
1076 else if (data->isoc)
1077 usb_driver_release_interface(&btusb_driver, data->isoc);
1078
1079 __hci_dev_put(hdev);
1080
1081 hci_free_dev(hdev);
1082 }
1083
1084 #ifdef CONFIG_PM
1085 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1086 {
1087 struct btusb_data *data = usb_get_intfdata(intf);
1088
1089 BT_DBG("intf %p", intf);
1090
1091 if (data->suspend_count++)
1092 return 0;
1093
1094 spin_lock_irq(&data->txlock);
1095 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1096 set_bit(BTUSB_SUSPENDING, &data->flags);
1097 spin_unlock_irq(&data->txlock);
1098 } else {
1099 spin_unlock_irq(&data->txlock);
1100 data->suspend_count--;
1101 return -EBUSY;
1102 }
1103
1104 cancel_work_sync(&data->work);
1105
1106 btusb_stop_traffic(data);
1107 usb_kill_anchored_urbs(&data->tx_anchor);
1108
1109 return 0;
1110 }
1111
1112 static void play_deferred(struct btusb_data *data)
1113 {
1114 struct urb *urb;
1115 int err;
1116
1117 while ((urb = usb_get_from_anchor(&data->deferred))) {
1118 err = usb_submit_urb(urb, GFP_ATOMIC);
1119 if (err < 0)
1120 break;
1121
1122 data->tx_in_flight++;
1123 }
1124 usb_scuttle_anchored_urbs(&data->deferred);
1125 }
1126
1127 static int btusb_resume(struct usb_interface *intf)
1128 {
1129 struct btusb_data *data = usb_get_intfdata(intf);
1130 struct hci_dev *hdev = data->hdev;
1131 int err = 0;
1132
1133 BT_DBG("intf %p", intf);
1134
1135 if (--data->suspend_count)
1136 return 0;
1137
1138 if (!test_bit(HCI_RUNNING, &hdev->flags))
1139 goto done;
1140
1141 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1142 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1143 if (err < 0) {
1144 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1145 goto failed;
1146 }
1147 }
1148
1149 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1150 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1151 if (err < 0) {
1152 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1153 goto failed;
1154 }
1155
1156 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1157 }
1158
1159 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1160 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1161 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1162 else
1163 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1164 }
1165
1166 spin_lock_irq(&data->txlock);
1167 play_deferred(data);
1168 clear_bit(BTUSB_SUSPENDING, &data->flags);
1169 spin_unlock_irq(&data->txlock);
1170 schedule_work(&data->work);
1171
1172 return 0;
1173
1174 failed:
1175 usb_scuttle_anchored_urbs(&data->deferred);
1176 done:
1177 spin_lock_irq(&data->txlock);
1178 clear_bit(BTUSB_SUSPENDING, &data->flags);
1179 spin_unlock_irq(&data->txlock);
1180
1181 return err;
1182 }
1183 #endif
1184
1185 static struct usb_driver btusb_driver = {
1186 .name = "btusb",
1187 .probe = btusb_probe,
1188 .disconnect = btusb_disconnect,
1189 #ifdef CONFIG_PM
1190 .suspend = btusb_suspend,
1191 .resume = btusb_resume,
1192 #endif
1193 .id_table = btusb_table,
1194 .supports_autosuspend = 1,
1195 };
1196
1197 static int __init btusb_init(void)
1198 {
1199 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1200
1201 return usb_register(&btusb_driver);
1202 }
1203
1204 static void __exit btusb_exit(void)
1205 {
1206 usb_deregister(&btusb_driver);
1207 }
1208
1209 module_init(btusb_init);
1210 module_exit(btusb_exit);
1211
1212 module_param(ignore_dga, bool, 0644);
1213 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1214
1215 module_param(ignore_csr, bool, 0644);
1216 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1217
1218 module_param(ignore_sniffer, bool, 0644);
1219 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1220
1221 module_param(disable_scofix, bool, 0644);
1222 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1223
1224 module_param(force_scofix, bool, 0644);
1225 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1226
1227 module_param(reset, bool, 0644);
1228 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1229
1230 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1231 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1232 MODULE_VERSION(VERSION);
1233 MODULE_LICENSE("GPL");
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