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Bluetooth: btusb: also be quiet when suspending
[linux-2.6.git] / drivers / bluetooth / btusb.c
blob18fde3be530fb64b3865784485faeb91a7aab7bb
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 #define BTUSB_ATH3012 0x80
58
59 static struct usb_device_id btusb_table[] = {
60 /* Generic Bluetooth USB device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63 /* Broadcom SoftSailing reporting vendor specific */
64 { USB_DEVICE(0x05ac, 0x21e1) },
65
66 /* Apple MacBookPro 7,1 */
67 { USB_DEVICE(0x05ac, 0x8213) },
68
69 /* Apple iMac11,1 */
70 { USB_DEVICE(0x05ac, 0x8215) },
71
72 /* Apple MacBookPro6,2 */
73 { USB_DEVICE(0x05ac, 0x8218) },
74
75 /* Apple MacBookAir3,1, MacBookAir3,2 */
76 { USB_DEVICE(0x05ac, 0x821b) },
77
78 /* Apple MacBookAir4,1 */
79 { USB_DEVICE(0x05ac, 0x821f) },
80
81 /* Apple MacBookPro8,2 */
82 { USB_DEVICE(0x05ac, 0x821a) },
83
84 /* Apple MacMini5,1 */
85 { USB_DEVICE(0x05ac, 0x8281) },
86
87 /* AVM BlueFRITZ! USB v2.0 */
88 { USB_DEVICE(0x057c, 0x3800) },
89
90 /* Bluetooth Ultraport Module from IBM */
91 { USB_DEVICE(0x04bf, 0x030a) },
92
93 /* ALPS Modules with non-standard id */
94 { USB_DEVICE(0x044e, 0x3001) },
95 { USB_DEVICE(0x044e, 0x3002) },
96
97 /* Ericsson with non-standard id */
98 { USB_DEVICE(0x0bdb, 0x1002) },
99
100 /* Canyon CN-BTU1 with HID interfaces */
101 { USB_DEVICE(0x0c10, 0x0000) },
102
103 { } /* Terminating entry */
104 };
105
106 MODULE_DEVICE_TABLE(usb, btusb_table);
107
108 static struct usb_device_id blacklist_table[] = {
109 /* CSR BlueCore devices */
110 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
111
112 /* Broadcom BCM2033 without firmware */
113 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
114
115 /* Atheros 3011 with sflash firmware */
116 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
117 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
118 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
119
120 /* Atheros AR9285 Malbec with sflash firmware */
121 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
122
123 /* Atheros 3012 with sflash firmware */
124 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
125
126 /* Atheros AR5BBU12 with sflash firmware */
127 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
128
129 /* Broadcom BCM2035 */
130 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
131 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
132 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
133
134 /* Broadcom BCM2045 */
135 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
136 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
137
138 /* IBM/Lenovo ThinkPad with Broadcom chip */
139 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
140 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
141
142 /* HP laptop with Broadcom chip */
143 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
144
145 /* Dell laptop with Broadcom chip */
146 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
147
148 /* Dell Wireless 370 and 410 devices */
149 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
150 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152 /* Belkin F8T012 and F8T013 devices */
153 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156 /* Asus WL-BTD202 device */
157 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159 /* Kensington Bluetooth USB adapter */
160 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162 /* RTX Telecom based adapters with buggy SCO support */
163 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
164 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
165
166 /* CONWISE Technology based adapters with buggy SCO support */
167 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
168
169 /* Digianswer devices */
170 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
171 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
172
173 /* CSR BlueCore Bluetooth Sniffer */
174 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
175
176 /* Frontline ComProbe Bluetooth Sniffer */
177 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
178
179 { } /* Terminating entry */
180 };
181
182 #define BTUSB_MAX_ISOC_FRAMES 10
183
184 #define BTUSB_INTR_RUNNING 0
185 #define BTUSB_BULK_RUNNING 1
186 #define BTUSB_ISOC_RUNNING 2
187 #define BTUSB_SUSPENDING 3
188 #define BTUSB_DID_ISO_RESUME 4
189
190 struct btusb_data {
191 struct hci_dev *hdev;
192 struct usb_device *udev;
193 struct usb_interface *intf;
194 struct usb_interface *isoc;
195
196 spinlock_t lock;
197
198 unsigned long flags;
199
200 struct work_struct work;
201 struct work_struct waker;
202
203 struct usb_anchor tx_anchor;
204 struct usb_anchor intr_anchor;
205 struct usb_anchor bulk_anchor;
206 struct usb_anchor isoc_anchor;
207 struct usb_anchor deferred;
208 int tx_in_flight;
209 spinlock_t txlock;
210
211 struct usb_endpoint_descriptor *intr_ep;
212 struct usb_endpoint_descriptor *bulk_tx_ep;
213 struct usb_endpoint_descriptor *bulk_rx_ep;
214 struct usb_endpoint_descriptor *isoc_tx_ep;
215 struct usb_endpoint_descriptor *isoc_rx_ep;
216
217 __u8 cmdreq_type;
218
219 unsigned int sco_num;
220 int isoc_altsetting;
221 int suspend_count;
222 };
223
224 static int inc_tx(struct btusb_data *data)
225 {
226 unsigned long flags;
227 int rv;
228
229 spin_lock_irqsave(&data->txlock, flags);
230 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
231 if (!rv)
232 data->tx_in_flight++;
233 spin_unlock_irqrestore(&data->txlock, flags);
234
235 return rv;
236 }
237
238 static void btusb_intr_complete(struct urb *urb)
239 {
240 struct hci_dev *hdev = urb->context;
241 struct btusb_data *data = hdev->driver_data;
242 int err;
243
244 BT_DBG("%s urb %p status %d count %d", hdev->name,
245 urb, urb->status, urb->actual_length);
246
247 if (!test_bit(HCI_RUNNING, &hdev->flags))
248 return;
249
250 if (urb->status == 0) {
251 hdev->stat.byte_rx += urb->actual_length;
252
253 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
254 urb->transfer_buffer,
255 urb->actual_length) < 0) {
256 BT_ERR("%s corrupted event packet", hdev->name);
257 hdev->stat.err_rx++;
258 }
259 }
260
261 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
262 return;
263
264 usb_mark_last_busy(data->udev);
265 usb_anchor_urb(urb, &data->intr_anchor);
266
267 err = usb_submit_urb(urb, GFP_ATOMIC);
268 if (err < 0) {
269 /* -EPERM: urb is being killed;
270 * -ENODEV: device got disconnected */
271 if (err != -EPERM && err != -ENODEV)
272 BT_ERR("%s urb %p failed to resubmit (%d)",
273 hdev->name, urb, -err);
274 usb_unanchor_urb(urb);
275 }
276 }
277
278 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
279 {
280 struct btusb_data *data = hdev->driver_data;
281 struct urb *urb;
282 unsigned char *buf;
283 unsigned int pipe;
284 int err, size;
285
286 BT_DBG("%s", hdev->name);
287
288 if (!data->intr_ep)
289 return -ENODEV;
290
291 urb = usb_alloc_urb(0, mem_flags);
292 if (!urb)
293 return -ENOMEM;
294
295 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
296
297 buf = kmalloc(size, mem_flags);
298 if (!buf) {
299 usb_free_urb(urb);
300 return -ENOMEM;
301 }
302
303 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
304
305 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
306 btusb_intr_complete, hdev,
307 data->intr_ep->bInterval);
308
309 urb->transfer_flags |= URB_FREE_BUFFER;
310
311 usb_anchor_urb(urb, &data->intr_anchor);
312
313 err = usb_submit_urb(urb, mem_flags);
314 if (err < 0) {
315 BT_ERR("%s urb %p submission failed (%d)",
316 hdev->name, urb, -err);
317 usb_unanchor_urb(urb);
318 }
319
320 usb_free_urb(urb);
321
322 return err;
323 }
324
325 static void btusb_bulk_complete(struct urb *urb)
326 {
327 struct hci_dev *hdev = urb->context;
328 struct btusb_data *data = hdev->driver_data;
329 int err;
330
331 BT_DBG("%s urb %p status %d count %d", hdev->name,
332 urb, urb->status, urb->actual_length);
333
334 if (!test_bit(HCI_RUNNING, &hdev->flags))
335 return;
336
337 if (urb->status == 0) {
338 hdev->stat.byte_rx += urb->actual_length;
339
340 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
341 urb->transfer_buffer,
342 urb->actual_length) < 0) {
343 BT_ERR("%s corrupted ACL packet", hdev->name);
344 hdev->stat.err_rx++;
345 }
346 }
347
348 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
349 return;
350
351 usb_anchor_urb(urb, &data->bulk_anchor);
352 usb_mark_last_busy(data->udev);
353
354 err = usb_submit_urb(urb, GFP_ATOMIC);
355 if (err < 0) {
356 /* -EPERM: urb is being killed;
357 * -ENODEV: device got disconnected */
358 if (err != -EPERM && err != -ENODEV)
359 BT_ERR("%s urb %p failed to resubmit (%d)",
360 hdev->name, urb, -err);
361 usb_unanchor_urb(urb);
362 }
363 }
364
365 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
366 {
367 struct btusb_data *data = hdev->driver_data;
368 struct urb *urb;
369 unsigned char *buf;
370 unsigned int pipe;
371 int err, size = HCI_MAX_FRAME_SIZE;
372
373 BT_DBG("%s", hdev->name);
374
375 if (!data->bulk_rx_ep)
376 return -ENODEV;
377
378 urb = usb_alloc_urb(0, mem_flags);
379 if (!urb)
380 return -ENOMEM;
381
382 buf = kmalloc(size, mem_flags);
383 if (!buf) {
384 usb_free_urb(urb);
385 return -ENOMEM;
386 }
387
388 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
389
390 usb_fill_bulk_urb(urb, data->udev, pipe,
391 buf, size, btusb_bulk_complete, hdev);
392
393 urb->transfer_flags |= URB_FREE_BUFFER;
394
395 usb_mark_last_busy(data->udev);
396 usb_anchor_urb(urb, &data->bulk_anchor);
397
398 err = usb_submit_urb(urb, mem_flags);
399 if (err < 0) {
400 BT_ERR("%s urb %p submission failed (%d)",
401 hdev->name, urb, -err);
402 usb_unanchor_urb(urb);
403 }
404
405 usb_free_urb(urb);
406
407 return err;
408 }
409
410 static void btusb_isoc_complete(struct urb *urb)
411 {
412 struct hci_dev *hdev = urb->context;
413 struct btusb_data *data = hdev->driver_data;
414 int i, err;
415
416 BT_DBG("%s urb %p status %d count %d", hdev->name,
417 urb, urb->status, urb->actual_length);
418
419 if (!test_bit(HCI_RUNNING, &hdev->flags))
420 return;
421
422 if (urb->status == 0) {
423 for (i = 0; i < urb->number_of_packets; i++) {
424 unsigned int offset = urb->iso_frame_desc[i].offset;
425 unsigned int length = urb->iso_frame_desc[i].actual_length;
426
427 if (urb->iso_frame_desc[i].status)
428 continue;
429
430 hdev->stat.byte_rx += length;
431
432 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
433 urb->transfer_buffer + offset,
434 length) < 0) {
435 BT_ERR("%s corrupted SCO packet", hdev->name);
436 hdev->stat.err_rx++;
437 }
438 }
439 }
440
441 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
442 return;
443
444 usb_anchor_urb(urb, &data->isoc_anchor);
445
446 err = usb_submit_urb(urb, GFP_ATOMIC);
447 if (err < 0) {
448 /* -EPERM: urb is being killed;
449 * -ENODEV: device got disconnected */
450 if (err != -EPERM && err != -ENODEV)
451 BT_ERR("%s urb %p failed to resubmit (%d)",
452 hdev->name, urb, -err);
453 usb_unanchor_urb(urb);
454 }
455 }
456
457 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
458 {
459 int i, offset = 0;
460
461 BT_DBG("len %d mtu %d", len, mtu);
462
463 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
464 i++, offset += mtu, len -= mtu) {
465 urb->iso_frame_desc[i].offset = offset;
466 urb->iso_frame_desc[i].length = mtu;
467 }
468
469 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
470 urb->iso_frame_desc[i].offset = offset;
471 urb->iso_frame_desc[i].length = len;
472 i++;
473 }
474
475 urb->number_of_packets = i;
476 }
477
478 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
479 {
480 struct btusb_data *data = hdev->driver_data;
481 struct urb *urb;
482 unsigned char *buf;
483 unsigned int pipe;
484 int err, size;
485
486 BT_DBG("%s", hdev->name);
487
488 if (!data->isoc_rx_ep)
489 return -ENODEV;
490
491 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
492 if (!urb)
493 return -ENOMEM;
494
495 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
496 BTUSB_MAX_ISOC_FRAMES;
497
498 buf = kmalloc(size, mem_flags);
499 if (!buf) {
500 usb_free_urb(urb);
501 return -ENOMEM;
502 }
503
504 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
505
506 urb->dev = data->udev;
507 urb->pipe = pipe;
508 urb->context = hdev;
509 urb->complete = btusb_isoc_complete;
510 urb->interval = data->isoc_rx_ep->bInterval;
511
512 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
513 urb->transfer_buffer = buf;
514 urb->transfer_buffer_length = size;
515
516 __fill_isoc_descriptor(urb, size,
517 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
518
519 usb_anchor_urb(urb, &data->isoc_anchor);
520
521 err = usb_submit_urb(urb, mem_flags);
522 if (err < 0) {
523 BT_ERR("%s urb %p submission failed (%d)",
524 hdev->name, urb, -err);
525 usb_unanchor_urb(urb);
526 }
527
528 usb_free_urb(urb);
529
530 return err;
531 }
532
533 static void btusb_tx_complete(struct urb *urb)
534 {
535 struct sk_buff *skb = urb->context;
536 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
537 struct btusb_data *data = hdev->driver_data;
538
539 BT_DBG("%s urb %p status %d count %d", hdev->name,
540 urb, urb->status, urb->actual_length);
541
542 if (!test_bit(HCI_RUNNING, &hdev->flags))
543 goto done;
544
545 if (!urb->status)
546 hdev->stat.byte_tx += urb->transfer_buffer_length;
547 else
548 hdev->stat.err_tx++;
549
550 done:
551 spin_lock(&data->txlock);
552 data->tx_in_flight--;
553 spin_unlock(&data->txlock);
554
555 kfree(urb->setup_packet);
556
557 kfree_skb(skb);
558 }
559
560 static void btusb_isoc_tx_complete(struct urb *urb)
561 {
562 struct sk_buff *skb = urb->context;
563 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
564
565 BT_DBG("%s urb %p status %d count %d", hdev->name,
566 urb, urb->status, urb->actual_length);
567
568 if (!test_bit(HCI_RUNNING, &hdev->flags))
569 goto done;
570
571 if (!urb->status)
572 hdev->stat.byte_tx += urb->transfer_buffer_length;
573 else
574 hdev->stat.err_tx++;
575
576 done:
577 kfree(urb->setup_packet);
578
579 kfree_skb(skb);
580 }
581
582 static int btusb_open(struct hci_dev *hdev)
583 {
584 struct btusb_data *data = hdev->driver_data;
585 int err;
586
587 BT_DBG("%s", hdev->name);
588
589 err = usb_autopm_get_interface(data->intf);
590 if (err < 0)
591 return err;
592
593 data->intf->needs_remote_wakeup = 1;
594
595 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
596 goto done;
597
598 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
599 goto done;
600
601 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
602 if (err < 0)
603 goto failed;
604
605 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
606 if (err < 0) {
607 usb_kill_anchored_urbs(&data->intr_anchor);
608 goto failed;
609 }
610
611 set_bit(BTUSB_BULK_RUNNING, &data->flags);
612 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
613
614 done:
615 usb_autopm_put_interface(data->intf);
616 return 0;
617
618 failed:
619 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
620 clear_bit(HCI_RUNNING, &hdev->flags);
621 usb_autopm_put_interface(data->intf);
622 return err;
623 }
624
625 static void btusb_stop_traffic(struct btusb_data *data)
626 {
627 usb_kill_anchored_urbs(&data->intr_anchor);
628 usb_kill_anchored_urbs(&data->bulk_anchor);
629 usb_kill_anchored_urbs(&data->isoc_anchor);
630 }
631
632 static int btusb_close(struct hci_dev *hdev)
633 {
634 struct btusb_data *data = hdev->driver_data;
635 int err;
636
637 BT_DBG("%s", hdev->name);
638
639 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
640 return 0;
641
642 cancel_work_sync(&data->work);
643 cancel_work_sync(&data->waker);
644
645 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
646 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
647 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
648
649 btusb_stop_traffic(data);
650 err = usb_autopm_get_interface(data->intf);
651 if (err < 0)
652 goto failed;
653
654 data->intf->needs_remote_wakeup = 0;
655 usb_autopm_put_interface(data->intf);
656
657 failed:
658 usb_scuttle_anchored_urbs(&data->deferred);
659 return 0;
660 }
661
662 static int btusb_flush(struct hci_dev *hdev)
663 {
664 struct btusb_data *data = hdev->driver_data;
665
666 BT_DBG("%s", hdev->name);
667
668 usb_kill_anchored_urbs(&data->tx_anchor);
669
670 return 0;
671 }
672
673 static int btusb_send_frame(struct sk_buff *skb)
674 {
675 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
676 struct btusb_data *data = hdev->driver_data;
677 struct usb_ctrlrequest *dr;
678 struct urb *urb;
679 unsigned int pipe;
680 int err;
681
682 BT_DBG("%s", hdev->name);
683
684 if (!test_bit(HCI_RUNNING, &hdev->flags))
685 return -EBUSY;
686
687 switch (bt_cb(skb)->pkt_type) {
688 case HCI_COMMAND_PKT:
689 urb = usb_alloc_urb(0, GFP_ATOMIC);
690 if (!urb)
691 return -ENOMEM;
692
693 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
694 if (!dr) {
695 usb_free_urb(urb);
696 return -ENOMEM;
697 }
698
699 dr->bRequestType = data->cmdreq_type;
700 dr->bRequest = 0;
701 dr->wIndex = 0;
702 dr->wValue = 0;
703 dr->wLength = __cpu_to_le16(skb->len);
704
705 pipe = usb_sndctrlpipe(data->udev, 0x00);
706
707 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
708 skb->data, skb->len, btusb_tx_complete, skb);
709
710 hdev->stat.cmd_tx++;
711 break;
712
713 case HCI_ACLDATA_PKT:
714 if (!data->bulk_tx_ep)
715 return -ENODEV;
716
717 urb = usb_alloc_urb(0, GFP_ATOMIC);
718 if (!urb)
719 return -ENOMEM;
720
721 pipe = usb_sndbulkpipe(data->udev,
722 data->bulk_tx_ep->bEndpointAddress);
723
724 usb_fill_bulk_urb(urb, data->udev, pipe,
725 skb->data, skb->len, btusb_tx_complete, skb);
726
727 hdev->stat.acl_tx++;
728 break;
729
730 case HCI_SCODATA_PKT:
731 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
732 return -ENODEV;
733
734 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
735 if (!urb)
736 return -ENOMEM;
737
738 pipe = usb_sndisocpipe(data->udev,
739 data->isoc_tx_ep->bEndpointAddress);
740
741 usb_fill_int_urb(urb, data->udev, pipe,
742 skb->data, skb->len, btusb_isoc_tx_complete,
743 skb, data->isoc_tx_ep->bInterval);
744
745 urb->transfer_flags = URB_ISO_ASAP;
746
747 __fill_isoc_descriptor(urb, skb->len,
748 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
749
750 hdev->stat.sco_tx++;
751 goto skip_waking;
752
753 default:
754 return -EILSEQ;
755 }
756
757 err = inc_tx(data);
758 if (err) {
759 usb_anchor_urb(urb, &data->deferred);
760 schedule_work(&data->waker);
761 err = 0;
762 goto done;
763 }
764
765 skip_waking:
766 usb_anchor_urb(urb, &data->tx_anchor);
767
768 err = usb_submit_urb(urb, GFP_ATOMIC);
769 if (err < 0) {
770 if (err != -EPERM && err != -ENODEV)
771 BT_ERR("%s urb %p submission failed (%d)",
772 hdev->name, urb, -err);
773 kfree(urb->setup_packet);
774 usb_unanchor_urb(urb);
775 } else {
776 usb_mark_last_busy(data->udev);
777 }
778
779 usb_free_urb(urb);
780
781 done:
782 return err;
783 }
784
785 static void btusb_destruct(struct hci_dev *hdev)
786 {
787 struct btusb_data *data = hdev->driver_data;
788
789 BT_DBG("%s", hdev->name);
790
791 kfree(data);
792 }
793
794 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
795 {
796 struct btusb_data *data = hdev->driver_data;
797
798 BT_DBG("%s evt %d", hdev->name, evt);
799
800 if (hdev->conn_hash.sco_num != data->sco_num) {
801 data->sco_num = hdev->conn_hash.sco_num;
802 schedule_work(&data->work);
803 }
804 }
805
806 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
807 {
808 struct btusb_data *data = hdev->driver_data;
809 struct usb_interface *intf = data->isoc;
810 struct usb_endpoint_descriptor *ep_desc;
811 int i, err;
812
813 if (!data->isoc)
814 return -ENODEV;
815
816 err = usb_set_interface(data->udev, 1, altsetting);
817 if (err < 0) {
818 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
819 return err;
820 }
821
822 data->isoc_altsetting = altsetting;
823
824 data->isoc_tx_ep = NULL;
825 data->isoc_rx_ep = NULL;
826
827 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
828 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
829
830 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
831 data->isoc_tx_ep = ep_desc;
832 continue;
833 }
834
835 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
836 data->isoc_rx_ep = ep_desc;
837 continue;
838 }
839 }
840
841 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
842 BT_ERR("%s invalid SCO descriptors", hdev->name);
843 return -ENODEV;
844 }
845
846 return 0;
847 }
848
849 static void btusb_work(struct work_struct *work)
850 {
851 struct btusb_data *data = container_of(work, struct btusb_data, work);
852 struct hci_dev *hdev = data->hdev;
853 int err;
854
855 if (hdev->conn_hash.sco_num > 0) {
856 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
857 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
858 if (err < 0) {
859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
860 usb_kill_anchored_urbs(&data->isoc_anchor);
861 return;
862 }
863
864 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
865 }
866 if (data->isoc_altsetting != 2) {
867 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
868 usb_kill_anchored_urbs(&data->isoc_anchor);
869
870 if (__set_isoc_interface(hdev, 2) < 0)
871 return;
872 }
873
874 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
875 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
876 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
877 else
878 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
879 }
880 } else {
881 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
882 usb_kill_anchored_urbs(&data->isoc_anchor);
883
884 __set_isoc_interface(hdev, 0);
885 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
886 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
887 }
888 }
889
890 static void btusb_waker(struct work_struct *work)
891 {
892 struct btusb_data *data = container_of(work, struct btusb_data, waker);
893 int err;
894
895 err = usb_autopm_get_interface(data->intf);
896 if (err < 0)
897 return;
898
899 usb_autopm_put_interface(data->intf);
900 }
901
902 static int btusb_probe(struct usb_interface *intf,
903 const struct usb_device_id *id)
904 {
905 struct usb_endpoint_descriptor *ep_desc;
906 struct btusb_data *data;
907 struct hci_dev *hdev;
908 int i, err;
909
910 BT_DBG("intf %p id %p", intf, id);
911
912 /* interface numbers are hardcoded in the spec */
913 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
914 return -ENODEV;
915
916 if (!id->driver_info) {
917 const struct usb_device_id *match;
918 match = usb_match_id(intf, blacklist_table);
919 if (match)
920 id = match;
921 }
922
923 if (id->driver_info == BTUSB_IGNORE)
924 return -ENODEV;
925
926 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
927 return -ENODEV;
928
929 if (ignore_csr && id->driver_info & BTUSB_CSR)
930 return -ENODEV;
931
932 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
933 return -ENODEV;
934
935 if (id->driver_info & BTUSB_ATH3012) {
936 struct usb_device *udev = interface_to_usbdev(intf);
937
938 /* Old firmware would otherwise let ath3k driver load
939 * patch and sysconfig files */
940 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
941 return -ENODEV;
942 }
943
944 data = kzalloc(sizeof(*data), GFP_KERNEL);
945 if (!data)
946 return -ENOMEM;
947
948 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
949 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
950
951 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
952 data->intr_ep = ep_desc;
953 continue;
954 }
955
956 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
957 data->bulk_tx_ep = ep_desc;
958 continue;
959 }
960
961 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
962 data->bulk_rx_ep = ep_desc;
963 continue;
964 }
965 }
966
967 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
968 kfree(data);
969 return -ENODEV;
970 }
971
972 data->cmdreq_type = USB_TYPE_CLASS;
973
974 data->udev = interface_to_usbdev(intf);
975 data->intf = intf;
976
977 spin_lock_init(&data->lock);
978
979 INIT_WORK(&data->work, btusb_work);
980 INIT_WORK(&data->waker, btusb_waker);
981 spin_lock_init(&data->txlock);
982
983 init_usb_anchor(&data->tx_anchor);
984 init_usb_anchor(&data->intr_anchor);
985 init_usb_anchor(&data->bulk_anchor);
986 init_usb_anchor(&data->isoc_anchor);
987 init_usb_anchor(&data->deferred);
988
989 hdev = hci_alloc_dev();
990 if (!hdev) {
991 kfree(data);
992 return -ENOMEM;
993 }
994
995 hdev->bus = HCI_USB;
996 hdev->driver_data = data;
997
998 data->hdev = hdev;
999
1000 SET_HCIDEV_DEV(hdev, &intf->dev);
1001
1002 hdev->open = btusb_open;
1003 hdev->close = btusb_close;
1004 hdev->flush = btusb_flush;
1005 hdev->send = btusb_send_frame;
1006 hdev->destruct = btusb_destruct;
1007 hdev->notify = btusb_notify;
1008
1009 hdev->owner = THIS_MODULE;
1010
1011 /* Interface numbers are hardcoded in the specification */
1012 data->isoc = usb_ifnum_to_if(data->udev, 1);
1013
1014 if (!reset)
1015 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1016
1017 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1018 if (!disable_scofix)
1019 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1020 }
1021
1022 if (id->driver_info & BTUSB_BROKEN_ISOC)
1023 data->isoc = NULL;
1024
1025 if (id->driver_info & BTUSB_DIGIANSWER) {
1026 data->cmdreq_type = USB_TYPE_VENDOR;
1027 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1028 }
1029
1030 if (id->driver_info & BTUSB_CSR) {
1031 struct usb_device *udev = data->udev;
1032
1033 /* Old firmware would otherwise execute USB reset */
1034 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1035 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1036 }
1037
1038 if (id->driver_info & BTUSB_SNIFFER) {
1039 struct usb_device *udev = data->udev;
1040
1041 /* New sniffer firmware has crippled HCI interface */
1042 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1043 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1044
1045 data->isoc = NULL;
1046 }
1047
1048 if (id->driver_info & BTUSB_BCM92035) {
1049 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1050 struct sk_buff *skb;
1051
1052 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1053 if (skb) {
1054 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1055 skb_queue_tail(&hdev->driver_init, skb);
1056 }
1057 }
1058
1059 if (data->isoc) {
1060 err = usb_driver_claim_interface(&btusb_driver,
1061 data->isoc, data);
1062 if (err < 0) {
1063 hci_free_dev(hdev);
1064 kfree(data);
1065 return err;
1066 }
1067 }
1068
1069 err = hci_register_dev(hdev);
1070 if (err < 0) {
1071 hci_free_dev(hdev);
1072 kfree(data);
1073 return err;
1074 }
1075
1076 usb_set_intfdata(intf, data);
1077
1078 return 0;
1079 }
1080
1081 static void btusb_disconnect(struct usb_interface *intf)
1082 {
1083 struct btusb_data *data = usb_get_intfdata(intf);
1084 struct hci_dev *hdev;
1085
1086 BT_DBG("intf %p", intf);
1087
1088 if (!data)
1089 return;
1090
1091 hdev = data->hdev;
1092
1093 __hci_dev_hold(hdev);
1094
1095 usb_set_intfdata(data->intf, NULL);
1096
1097 if (data->isoc)
1098 usb_set_intfdata(data->isoc, NULL);
1099
1100 hci_unregister_dev(hdev);
1101
1102 if (intf == data->isoc)
1103 usb_driver_release_interface(&btusb_driver, data->intf);
1104 else if (data->isoc)
1105 usb_driver_release_interface(&btusb_driver, data->isoc);
1106
1107 __hci_dev_put(hdev);
1108
1109 hci_free_dev(hdev);
1110 }
1111
1112 #ifdef CONFIG_PM
1113 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1114 {
1115 struct btusb_data *data = usb_get_intfdata(intf);
1116
1117 BT_DBG("intf %p", intf);
1118
1119 if (data->suspend_count++)
1120 return 0;
1121
1122 spin_lock_irq(&data->txlock);
1123 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1124 set_bit(BTUSB_SUSPENDING, &data->flags);
1125 spin_unlock_irq(&data->txlock);
1126 } else {
1127 spin_unlock_irq(&data->txlock);
1128 data->suspend_count--;
1129 return -EBUSY;
1130 }
1131
1132 cancel_work_sync(&data->work);
1133
1134 btusb_stop_traffic(data);
1135 usb_kill_anchored_urbs(&data->tx_anchor);
1136
1137 return 0;
1138 }
1139
1140 static void play_deferred(struct btusb_data *data)
1141 {
1142 struct urb *urb;
1143 int err;
1144
1145 while ((urb = usb_get_from_anchor(&data->deferred))) {
1146 err = usb_submit_urb(urb, GFP_ATOMIC);
1147 if (err < 0)
1148 break;
1149
1150 data->tx_in_flight++;
1151 }
1152 usb_scuttle_anchored_urbs(&data->deferred);
1153 }
1154
1155 static int btusb_resume(struct usb_interface *intf)
1156 {
1157 struct btusb_data *data = usb_get_intfdata(intf);
1158 struct hci_dev *hdev = data->hdev;
1159 int err = 0;
1160
1161 BT_DBG("intf %p", intf);
1162
1163 if (--data->suspend_count)
1164 return 0;
1165
1166 if (!test_bit(HCI_RUNNING, &hdev->flags))
1167 goto done;
1168
1169 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1170 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1171 if (err < 0) {
1172 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1173 goto failed;
1174 }
1175 }
1176
1177 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1178 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1179 if (err < 0) {
1180 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1181 goto failed;
1182 }
1183
1184 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1185 }
1186
1187 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1188 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1189 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1190 else
1191 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1192 }
1193
1194 spin_lock_irq(&data->txlock);
1195 play_deferred(data);
1196 clear_bit(BTUSB_SUSPENDING, &data->flags);
1197 spin_unlock_irq(&data->txlock);
1198 schedule_work(&data->work);
1199
1200 return 0;
1201
1202 failed:
1203 usb_scuttle_anchored_urbs(&data->deferred);
1204 done:
1205 spin_lock_irq(&data->txlock);
1206 clear_bit(BTUSB_SUSPENDING, &data->flags);
1207 spin_unlock_irq(&data->txlock);
1208
1209 return err;
1210 }
1211 #endif
1212
1213 static struct usb_driver btusb_driver = {
1214 .name = "btusb",
1215 .probe = btusb_probe,
1216 .disconnect = btusb_disconnect,
1217 #ifdef CONFIG_PM
1218 .suspend = btusb_suspend,
1219 .resume = btusb_resume,
1220 #endif
1221 .id_table = btusb_table,
1222 .supports_autosuspend = 1,
1223 };
1224
1225 static int __init btusb_init(void)
1226 {
1227 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1228
1229 return usb_register(&btusb_driver);
1230 }
1231
1232 static void __exit btusb_exit(void)
1233 {
1234 usb_deregister(&btusb_driver);
1235 }
1236
1237 module_init(btusb_init);
1238 module_exit(btusb_exit);
1239
1240 module_param(ignore_dga, bool, 0644);
1241 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1242
1243 module_param(ignore_csr, bool, 0644);
1244 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1245
1246 module_param(ignore_sniffer, bool, 0644);
1247 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1248
1249 module_param(disable_scofix, bool, 0644);
1250 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1251
1252 module_param(force_scofix, bool, 0644);
1253 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1254
1255 module_param(reset, bool, 0644);
1256 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1257
1258 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1259 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1260 MODULE_VERSION(VERSION);
1261 MODULE_LICENSE("GPL");
Linus' kernel tree