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Merge tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
[deliverable/linux.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 bool ignore_dga;
41 static bool ignore_csr;
42 static bool ignore_sniffer;
43 static bool disable_scofix;
44 static bool force_scofix;
45
46 static bool 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(0x0a5c, 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 /* Broadcom BCM20702A0 */
104 { USB_DEVICE(0x0a5c, 0x21e3) },
105 { USB_DEVICE(0x0a5c, 0x21e6) },
106 { USB_DEVICE(0x0a5c, 0x21e8) },
107 { USB_DEVICE(0x0a5c, 0x21f3) },
108 { USB_DEVICE(0x413c, 0x8197) },
109
110 { } /* Terminating entry */
111 };
112
113 MODULE_DEVICE_TABLE(usb, btusb_table);
114
115 static struct usb_device_id blacklist_table[] = {
116 /* CSR BlueCore devices */
117 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
118
119 /* Broadcom BCM2033 without firmware */
120 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
121
122 /* Atheros 3011 with sflash firmware */
123 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
124 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
125 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
126 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
127
128 /* Atheros AR9285 Malbec with sflash firmware */
129 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
130
131 /* Atheros 3012 with sflash firmware */
132 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
133 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
134 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
136
137 /* Atheros AR5BBU12 with sflash firmware */
138 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
139
140 /* Broadcom BCM2035 */
141 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
142 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
143 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
144
145 /* Broadcom BCM2045 */
146 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
147 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
148
149 /* IBM/Lenovo ThinkPad with Broadcom chip */
150 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
151 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
152
153 /* HP laptop with Broadcom chip */
154 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156 /* Dell laptop with Broadcom chip */
157 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159 /* Dell Wireless 370 and 410 devices */
160 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
161 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163 /* Belkin F8T012 and F8T013 devices */
164 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
165 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
166
167 /* Asus WL-BTD202 device */
168 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170 /* Kensington Bluetooth USB adapter */
171 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173 /* RTX Telecom based adapters with buggy SCO support */
174 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
175 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
176
177 /* CONWISE Technology based adapters with buggy SCO support */
178 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
179
180 /* Digianswer devices */
181 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
182 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
183
184 /* CSR BlueCore Bluetooth Sniffer */
185 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
186
187 /* Frontline ComProbe Bluetooth Sniffer */
188 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
189
190 { } /* Terminating entry */
191 };
192
193 #define BTUSB_MAX_ISOC_FRAMES 10
194
195 #define BTUSB_INTR_RUNNING 0
196 #define BTUSB_BULK_RUNNING 1
197 #define BTUSB_ISOC_RUNNING 2
198 #define BTUSB_SUSPENDING 3
199 #define BTUSB_DID_ISO_RESUME 4
200
201 struct btusb_data {
202 struct hci_dev *hdev;
203 struct usb_device *udev;
204 struct usb_interface *intf;
205 struct usb_interface *isoc;
206
207 spinlock_t lock;
208
209 unsigned long flags;
210
211 struct work_struct work;
212 struct work_struct waker;
213
214 struct usb_anchor tx_anchor;
215 struct usb_anchor intr_anchor;
216 struct usb_anchor bulk_anchor;
217 struct usb_anchor isoc_anchor;
218 struct usb_anchor deferred;
219 int tx_in_flight;
220 spinlock_t txlock;
221
222 struct usb_endpoint_descriptor *intr_ep;
223 struct usb_endpoint_descriptor *bulk_tx_ep;
224 struct usb_endpoint_descriptor *bulk_rx_ep;
225 struct usb_endpoint_descriptor *isoc_tx_ep;
226 struct usb_endpoint_descriptor *isoc_rx_ep;
227
228 __u8 cmdreq_type;
229
230 unsigned int sco_num;
231 int isoc_altsetting;
232 int suspend_count;
233 };
234
235 static int inc_tx(struct btusb_data *data)
236 {
237 unsigned long flags;
238 int rv;
239
240 spin_lock_irqsave(&data->txlock, flags);
241 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
242 if (!rv)
243 data->tx_in_flight++;
244 spin_unlock_irqrestore(&data->txlock, flags);
245
246 return rv;
247 }
248
249 static void btusb_intr_complete(struct urb *urb)
250 {
251 struct hci_dev *hdev = urb->context;
252 struct btusb_data *data = hci_get_drvdata(hdev);
253 int err;
254
255 BT_DBG("%s urb %p status %d count %d", hdev->name,
256 urb, urb->status, urb->actual_length);
257
258 if (!test_bit(HCI_RUNNING, &hdev->flags))
259 return;
260
261 if (urb->status == 0) {
262 hdev->stat.byte_rx += urb->actual_length;
263
264 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
265 urb->transfer_buffer,
266 urb->actual_length) < 0) {
267 BT_ERR("%s corrupted event packet", hdev->name);
268 hdev->stat.err_rx++;
269 }
270 }
271
272 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
273 return;
274
275 usb_mark_last_busy(data->udev);
276 usb_anchor_urb(urb, &data->intr_anchor);
277
278 err = usb_submit_urb(urb, GFP_ATOMIC);
279 if (err < 0) {
280 /* -EPERM: urb is being killed;
281 * -ENODEV: device got disconnected */
282 if (err != -EPERM && err != -ENODEV)
283 BT_ERR("%s urb %p failed to resubmit (%d)",
284 hdev->name, urb, -err);
285 usb_unanchor_urb(urb);
286 }
287 }
288
289 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
290 {
291 struct btusb_data *data = hci_get_drvdata(hdev);
292 struct urb *urb;
293 unsigned char *buf;
294 unsigned int pipe;
295 int err, size;
296
297 BT_DBG("%s", hdev->name);
298
299 if (!data->intr_ep)
300 return -ENODEV;
301
302 urb = usb_alloc_urb(0, mem_flags);
303 if (!urb)
304 return -ENOMEM;
305
306 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
307
308 buf = kmalloc(size, mem_flags);
309 if (!buf) {
310 usb_free_urb(urb);
311 return -ENOMEM;
312 }
313
314 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
315
316 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
317 btusb_intr_complete, hdev,
318 data->intr_ep->bInterval);
319
320 urb->transfer_flags |= URB_FREE_BUFFER;
321
322 usb_anchor_urb(urb, &data->intr_anchor);
323
324 err = usb_submit_urb(urb, mem_flags);
325 if (err < 0) {
326 if (err != -EPERM && err != -ENODEV)
327 BT_ERR("%s urb %p submission failed (%d)",
328 hdev->name, urb, -err);
329 usb_unanchor_urb(urb);
330 }
331
332 usb_free_urb(urb);
333
334 return err;
335 }
336
337 static void btusb_bulk_complete(struct urb *urb)
338 {
339 struct hci_dev *hdev = urb->context;
340 struct btusb_data *data = hci_get_drvdata(hdev);
341 int err;
342
343 BT_DBG("%s urb %p status %d count %d", hdev->name,
344 urb, urb->status, urb->actual_length);
345
346 if (!test_bit(HCI_RUNNING, &hdev->flags))
347 return;
348
349 if (urb->status == 0) {
350 hdev->stat.byte_rx += urb->actual_length;
351
352 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
353 urb->transfer_buffer,
354 urb->actual_length) < 0) {
355 BT_ERR("%s corrupted ACL packet", hdev->name);
356 hdev->stat.err_rx++;
357 }
358 }
359
360 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
361 return;
362
363 usb_anchor_urb(urb, &data->bulk_anchor);
364 usb_mark_last_busy(data->udev);
365
366 err = usb_submit_urb(urb, GFP_ATOMIC);
367 if (err < 0) {
368 /* -EPERM: urb is being killed;
369 * -ENODEV: device got disconnected */
370 if (err != -EPERM && err != -ENODEV)
371 BT_ERR("%s urb %p failed to resubmit (%d)",
372 hdev->name, urb, -err);
373 usb_unanchor_urb(urb);
374 }
375 }
376
377 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
378 {
379 struct btusb_data *data = hci_get_drvdata(hdev);
380 struct urb *urb;
381 unsigned char *buf;
382 unsigned int pipe;
383 int err, size = HCI_MAX_FRAME_SIZE;
384
385 BT_DBG("%s", hdev->name);
386
387 if (!data->bulk_rx_ep)
388 return -ENODEV;
389
390 urb = usb_alloc_urb(0, mem_flags);
391 if (!urb)
392 return -ENOMEM;
393
394 buf = kmalloc(size, mem_flags);
395 if (!buf) {
396 usb_free_urb(urb);
397 return -ENOMEM;
398 }
399
400 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
401
402 usb_fill_bulk_urb(urb, data->udev, pipe,
403 buf, size, btusb_bulk_complete, hdev);
404
405 urb->transfer_flags |= URB_FREE_BUFFER;
406
407 usb_mark_last_busy(data->udev);
408 usb_anchor_urb(urb, &data->bulk_anchor);
409
410 err = usb_submit_urb(urb, mem_flags);
411 if (err < 0) {
412 if (err != -EPERM && err != -ENODEV)
413 BT_ERR("%s urb %p submission failed (%d)",
414 hdev->name, urb, -err);
415 usb_unanchor_urb(urb);
416 }
417
418 usb_free_urb(urb);
419
420 return err;
421 }
422
423 static void btusb_isoc_complete(struct urb *urb)
424 {
425 struct hci_dev *hdev = urb->context;
426 struct btusb_data *data = hci_get_drvdata(hdev);
427 int i, err;
428
429 BT_DBG("%s urb %p status %d count %d", hdev->name,
430 urb, urb->status, urb->actual_length);
431
432 if (!test_bit(HCI_RUNNING, &hdev->flags))
433 return;
434
435 if (urb->status == 0) {
436 for (i = 0; i < urb->number_of_packets; i++) {
437 unsigned int offset = urb->iso_frame_desc[i].offset;
438 unsigned int length = urb->iso_frame_desc[i].actual_length;
439
440 if (urb->iso_frame_desc[i].status)
441 continue;
442
443 hdev->stat.byte_rx += length;
444
445 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
446 urb->transfer_buffer + offset,
447 length) < 0) {
448 BT_ERR("%s corrupted SCO packet", hdev->name);
449 hdev->stat.err_rx++;
450 }
451 }
452 }
453
454 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
455 return;
456
457 usb_anchor_urb(urb, &data->isoc_anchor);
458
459 err = usb_submit_urb(urb, GFP_ATOMIC);
460 if (err < 0) {
461 /* -EPERM: urb is being killed;
462 * -ENODEV: device got disconnected */
463 if (err != -EPERM && err != -ENODEV)
464 BT_ERR("%s urb %p failed to resubmit (%d)",
465 hdev->name, urb, -err);
466 usb_unanchor_urb(urb);
467 }
468 }
469
470 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
471 {
472 int i, offset = 0;
473
474 BT_DBG("len %d mtu %d", len, mtu);
475
476 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
477 i++, offset += mtu, len -= mtu) {
478 urb->iso_frame_desc[i].offset = offset;
479 urb->iso_frame_desc[i].length = mtu;
480 }
481
482 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
483 urb->iso_frame_desc[i].offset = offset;
484 urb->iso_frame_desc[i].length = len;
485 i++;
486 }
487
488 urb->number_of_packets = i;
489 }
490
491 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
492 {
493 struct btusb_data *data = hci_get_drvdata(hdev);
494 struct urb *urb;
495 unsigned char *buf;
496 unsigned int pipe;
497 int err, size;
498
499 BT_DBG("%s", hdev->name);
500
501 if (!data->isoc_rx_ep)
502 return -ENODEV;
503
504 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
505 if (!urb)
506 return -ENOMEM;
507
508 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
509 BTUSB_MAX_ISOC_FRAMES;
510
511 buf = kmalloc(size, mem_flags);
512 if (!buf) {
513 usb_free_urb(urb);
514 return -ENOMEM;
515 }
516
517 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
518
519 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
520 hdev, data->isoc_rx_ep->bInterval);
521
522 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
523
524 __fill_isoc_descriptor(urb, size,
525 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
526
527 usb_anchor_urb(urb, &data->isoc_anchor);
528
529 err = usb_submit_urb(urb, mem_flags);
530 if (err < 0) {
531 if (err != -EPERM && err != -ENODEV)
532 BT_ERR("%s urb %p submission failed (%d)",
533 hdev->name, urb, -err);
534 usb_unanchor_urb(urb);
535 }
536
537 usb_free_urb(urb);
538
539 return err;
540 }
541
542 static void btusb_tx_complete(struct urb *urb)
543 {
544 struct sk_buff *skb = urb->context;
545 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
546 struct btusb_data *data = hci_get_drvdata(hdev);
547
548 BT_DBG("%s urb %p status %d count %d", hdev->name,
549 urb, urb->status, urb->actual_length);
550
551 if (!test_bit(HCI_RUNNING, &hdev->flags))
552 goto done;
553
554 if (!urb->status)
555 hdev->stat.byte_tx += urb->transfer_buffer_length;
556 else
557 hdev->stat.err_tx++;
558
559 done:
560 spin_lock(&data->txlock);
561 data->tx_in_flight--;
562 spin_unlock(&data->txlock);
563
564 kfree(urb->setup_packet);
565
566 kfree_skb(skb);
567 }
568
569 static void btusb_isoc_tx_complete(struct urb *urb)
570 {
571 struct sk_buff *skb = urb->context;
572 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
573
574 BT_DBG("%s urb %p status %d count %d", hdev->name,
575 urb, urb->status, urb->actual_length);
576
577 if (!test_bit(HCI_RUNNING, &hdev->flags))
578 goto done;
579
580 if (!urb->status)
581 hdev->stat.byte_tx += urb->transfer_buffer_length;
582 else
583 hdev->stat.err_tx++;
584
585 done:
586 kfree(urb->setup_packet);
587
588 kfree_skb(skb);
589 }
590
591 static int btusb_open(struct hci_dev *hdev)
592 {
593 struct btusb_data *data = hci_get_drvdata(hdev);
594 int err;
595
596 BT_DBG("%s", hdev->name);
597
598 err = usb_autopm_get_interface(data->intf);
599 if (err < 0)
600 return err;
601
602 data->intf->needs_remote_wakeup = 1;
603
604 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
605 goto done;
606
607 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
608 goto done;
609
610 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
611 if (err < 0)
612 goto failed;
613
614 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
615 if (err < 0) {
616 usb_kill_anchored_urbs(&data->intr_anchor);
617 goto failed;
618 }
619
620 set_bit(BTUSB_BULK_RUNNING, &data->flags);
621 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
622
623 done:
624 usb_autopm_put_interface(data->intf);
625 return 0;
626
627 failed:
628 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
629 clear_bit(HCI_RUNNING, &hdev->flags);
630 usb_autopm_put_interface(data->intf);
631 return err;
632 }
633
634 static void btusb_stop_traffic(struct btusb_data *data)
635 {
636 usb_kill_anchored_urbs(&data->intr_anchor);
637 usb_kill_anchored_urbs(&data->bulk_anchor);
638 usb_kill_anchored_urbs(&data->isoc_anchor);
639 }
640
641 static int btusb_close(struct hci_dev *hdev)
642 {
643 struct btusb_data *data = hci_get_drvdata(hdev);
644 int err;
645
646 BT_DBG("%s", hdev->name);
647
648 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
649 return 0;
650
651 cancel_work_sync(&data->work);
652 cancel_work_sync(&data->waker);
653
654 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
655 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
656 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
657
658 btusb_stop_traffic(data);
659 err = usb_autopm_get_interface(data->intf);
660 if (err < 0)
661 goto failed;
662
663 data->intf->needs_remote_wakeup = 0;
664 usb_autopm_put_interface(data->intf);
665
666 failed:
667 usb_scuttle_anchored_urbs(&data->deferred);
668 return 0;
669 }
670
671 static int btusb_flush(struct hci_dev *hdev)
672 {
673 struct btusb_data *data = hci_get_drvdata(hdev);
674
675 BT_DBG("%s", hdev->name);
676
677 usb_kill_anchored_urbs(&data->tx_anchor);
678
679 return 0;
680 }
681
682 static int btusb_send_frame(struct sk_buff *skb)
683 {
684 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
685 struct btusb_data *data = hci_get_drvdata(hdev);
686 struct usb_ctrlrequest *dr;
687 struct urb *urb;
688 unsigned int pipe;
689 int err;
690
691 BT_DBG("%s", hdev->name);
692
693 if (!test_bit(HCI_RUNNING, &hdev->flags))
694 return -EBUSY;
695
696 switch (bt_cb(skb)->pkt_type) {
697 case HCI_COMMAND_PKT:
698 urb = usb_alloc_urb(0, GFP_ATOMIC);
699 if (!urb)
700 return -ENOMEM;
701
702 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
703 if (!dr) {
704 usb_free_urb(urb);
705 return -ENOMEM;
706 }
707
708 dr->bRequestType = data->cmdreq_type;
709 dr->bRequest = 0;
710 dr->wIndex = 0;
711 dr->wValue = 0;
712 dr->wLength = __cpu_to_le16(skb->len);
713
714 pipe = usb_sndctrlpipe(data->udev, 0x00);
715
716 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
717 skb->data, skb->len, btusb_tx_complete, skb);
718
719 hdev->stat.cmd_tx++;
720 break;
721
722 case HCI_ACLDATA_PKT:
723 if (!data->bulk_tx_ep)
724 return -ENODEV;
725
726 urb = usb_alloc_urb(0, GFP_ATOMIC);
727 if (!urb)
728 return -ENOMEM;
729
730 pipe = usb_sndbulkpipe(data->udev,
731 data->bulk_tx_ep->bEndpointAddress);
732
733 usb_fill_bulk_urb(urb, data->udev, pipe,
734 skb->data, skb->len, btusb_tx_complete, skb);
735
736 hdev->stat.acl_tx++;
737 break;
738
739 case HCI_SCODATA_PKT:
740 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
741 return -ENODEV;
742
743 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
744 if (!urb)
745 return -ENOMEM;
746
747 pipe = usb_sndisocpipe(data->udev,
748 data->isoc_tx_ep->bEndpointAddress);
749
750 usb_fill_int_urb(urb, data->udev, pipe,
751 skb->data, skb->len, btusb_isoc_tx_complete,
752 skb, data->isoc_tx_ep->bInterval);
753
754 urb->transfer_flags = URB_ISO_ASAP;
755
756 __fill_isoc_descriptor(urb, skb->len,
757 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
758
759 hdev->stat.sco_tx++;
760 goto skip_waking;
761
762 default:
763 return -EILSEQ;
764 }
765
766 err = inc_tx(data);
767 if (err) {
768 usb_anchor_urb(urb, &data->deferred);
769 schedule_work(&data->waker);
770 err = 0;
771 goto done;
772 }
773
774 skip_waking:
775 usb_anchor_urb(urb, &data->tx_anchor);
776
777 err = usb_submit_urb(urb, GFP_ATOMIC);
778 if (err < 0) {
779 if (err != -EPERM && err != -ENODEV)
780 BT_ERR("%s urb %p submission failed (%d)",
781 hdev->name, urb, -err);
782 kfree(urb->setup_packet);
783 usb_unanchor_urb(urb);
784 } else {
785 usb_mark_last_busy(data->udev);
786 }
787
788 done:
789 usb_free_urb(urb);
790 return err;
791 }
792
793 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
794 {
795 struct btusb_data *data = hci_get_drvdata(hdev);
796
797 BT_DBG("%s evt %d", hdev->name, evt);
798
799 if (hdev->conn_hash.sco_num != data->sco_num) {
800 data->sco_num = hdev->conn_hash.sco_num;
801 schedule_work(&data->work);
802 }
803 }
804
805 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
806 {
807 struct btusb_data *data = hci_get_drvdata(hdev);
808 struct usb_interface *intf = data->isoc;
809 struct usb_endpoint_descriptor *ep_desc;
810 int i, err;
811
812 if (!data->isoc)
813 return -ENODEV;
814
815 err = usb_set_interface(data->udev, 1, altsetting);
816 if (err < 0) {
817 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
818 return err;
819 }
820
821 data->isoc_altsetting = altsetting;
822
823 data->isoc_tx_ep = NULL;
824 data->isoc_rx_ep = NULL;
825
826 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
827 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
828
829 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
830 data->isoc_tx_ep = ep_desc;
831 continue;
832 }
833
834 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
835 data->isoc_rx_ep = ep_desc;
836 continue;
837 }
838 }
839
840 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
841 BT_ERR("%s invalid SCO descriptors", hdev->name);
842 return -ENODEV;
843 }
844
845 return 0;
846 }
847
848 static void btusb_work(struct work_struct *work)
849 {
850 struct btusb_data *data = container_of(work, struct btusb_data, work);
851 struct hci_dev *hdev = data->hdev;
852 int err;
853
854 if (hdev->conn_hash.sco_num > 0) {
855 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
856 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
857 if (err < 0) {
858 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
859 usb_kill_anchored_urbs(&data->isoc_anchor);
860 return;
861 }
862
863 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
864 }
865 if (data->isoc_altsetting != 2) {
866 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
867 usb_kill_anchored_urbs(&data->isoc_anchor);
868
869 if (__set_isoc_interface(hdev, 2) < 0)
870 return;
871 }
872
873 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
874 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
875 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
876 else
877 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
878 }
879 } else {
880 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
881 usb_kill_anchored_urbs(&data->isoc_anchor);
882
883 __set_isoc_interface(hdev, 0);
884 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
885 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
886 }
887 }
888
889 static void btusb_waker(struct work_struct *work)
890 {
891 struct btusb_data *data = container_of(work, struct btusb_data, waker);
892 int err;
893
894 err = usb_autopm_get_interface(data->intf);
895 if (err < 0)
896 return;
897
898 usb_autopm_put_interface(data->intf);
899 }
900
901 static int btusb_probe(struct usb_interface *intf,
902 const struct usb_device_id *id)
903 {
904 struct usb_endpoint_descriptor *ep_desc;
905 struct btusb_data *data;
906 struct hci_dev *hdev;
907 int i, err;
908
909 BT_DBG("intf %p id %p", intf, id);
910
911 /* interface numbers are hardcoded in the spec */
912 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
913 return -ENODEV;
914
915 if (!id->driver_info) {
916 const struct usb_device_id *match;
917 match = usb_match_id(intf, blacklist_table);
918 if (match)
919 id = match;
920 }
921
922 if (id->driver_info == BTUSB_IGNORE)
923 return -ENODEV;
924
925 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
926 return -ENODEV;
927
928 if (ignore_csr && id->driver_info & BTUSB_CSR)
929 return -ENODEV;
930
931 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
932 return -ENODEV;
933
934 if (id->driver_info & BTUSB_ATH3012) {
935 struct usb_device *udev = interface_to_usbdev(intf);
936
937 /* Old firmware would otherwise let ath3k driver load
938 * patch and sysconfig files */
939 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
940 return -ENODEV;
941 }
942
943 data = kzalloc(sizeof(*data), GFP_KERNEL);
944 if (!data)
945 return -ENOMEM;
946
947 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
948 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
949
950 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
951 data->intr_ep = ep_desc;
952 continue;
953 }
954
955 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
956 data->bulk_tx_ep = ep_desc;
957 continue;
958 }
959
960 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
961 data->bulk_rx_ep = ep_desc;
962 continue;
963 }
964 }
965
966 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
967 kfree(data);
968 return -ENODEV;
969 }
970
971 data->cmdreq_type = USB_TYPE_CLASS;
972
973 data->udev = interface_to_usbdev(intf);
974 data->intf = intf;
975
976 spin_lock_init(&data->lock);
977
978 INIT_WORK(&data->work, btusb_work);
979 INIT_WORK(&data->waker, btusb_waker);
980 spin_lock_init(&data->txlock);
981
982 init_usb_anchor(&data->tx_anchor);
983 init_usb_anchor(&data->intr_anchor);
984 init_usb_anchor(&data->bulk_anchor);
985 init_usb_anchor(&data->isoc_anchor);
986 init_usb_anchor(&data->deferred);
987
988 hdev = hci_alloc_dev();
989 if (!hdev) {
990 kfree(data);
991 return -ENOMEM;
992 }
993
994 hdev->bus = HCI_USB;
995 hci_set_drvdata(hdev, data);
996
997 data->hdev = hdev;
998
999 SET_HCIDEV_DEV(hdev, &intf->dev);
1000
1001 hdev->open = btusb_open;
1002 hdev->close = btusb_close;
1003 hdev->flush = btusb_flush;
1004 hdev->send = btusb_send_frame;
1005 hdev->notify = btusb_notify;
1006
1007 /* Interface numbers are hardcoded in the specification */
1008 data->isoc = usb_ifnum_to_if(data->udev, 1);
1009
1010 if (!reset)
1011 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1012
1013 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1014 if (!disable_scofix)
1015 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1016 }
1017
1018 if (id->driver_info & BTUSB_BROKEN_ISOC)
1019 data->isoc = NULL;
1020
1021 if (id->driver_info & BTUSB_DIGIANSWER) {
1022 data->cmdreq_type = USB_TYPE_VENDOR;
1023 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1024 }
1025
1026 if (id->driver_info & BTUSB_CSR) {
1027 struct usb_device *udev = data->udev;
1028
1029 /* Old firmware would otherwise execute USB reset */
1030 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1031 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032 }
1033
1034 if (id->driver_info & BTUSB_SNIFFER) {
1035 struct usb_device *udev = data->udev;
1036
1037 /* New sniffer firmware has crippled HCI interface */
1038 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1039 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1040
1041 data->isoc = NULL;
1042 }
1043
1044 if (id->driver_info & BTUSB_BCM92035) {
1045 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1046 struct sk_buff *skb;
1047
1048 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1049 if (skb) {
1050 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1051 skb_queue_tail(&hdev->driver_init, skb);
1052 }
1053 }
1054
1055 if (data->isoc) {
1056 err = usb_driver_claim_interface(&btusb_driver,
1057 data->isoc, data);
1058 if (err < 0) {
1059 hci_free_dev(hdev);
1060 kfree(data);
1061 return err;
1062 }
1063 }
1064
1065 err = hci_register_dev(hdev);
1066 if (err < 0) {
1067 hci_free_dev(hdev);
1068 kfree(data);
1069 return err;
1070 }
1071
1072 usb_set_intfdata(intf, data);
1073
1074 return 0;
1075 }
1076
1077 static void btusb_disconnect(struct usb_interface *intf)
1078 {
1079 struct btusb_data *data = usb_get_intfdata(intf);
1080 struct hci_dev *hdev;
1081
1082 BT_DBG("intf %p", intf);
1083
1084 if (!data)
1085 return;
1086
1087 hdev = data->hdev;
1088 usb_set_intfdata(data->intf, NULL);
1089
1090 if (data->isoc)
1091 usb_set_intfdata(data->isoc, NULL);
1092
1093 hci_unregister_dev(hdev);
1094
1095 if (intf == data->isoc)
1096 usb_driver_release_interface(&btusb_driver, data->intf);
1097 else if (data->isoc)
1098 usb_driver_release_interface(&btusb_driver, data->isoc);
1099
1100 hci_free_dev(hdev);
1101 kfree(data);
1102 }
1103
1104 #ifdef CONFIG_PM
1105 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1106 {
1107 struct btusb_data *data = usb_get_intfdata(intf);
1108
1109 BT_DBG("intf %p", intf);
1110
1111 if (data->suspend_count++)
1112 return 0;
1113
1114 spin_lock_irq(&data->txlock);
1115 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1116 set_bit(BTUSB_SUSPENDING, &data->flags);
1117 spin_unlock_irq(&data->txlock);
1118 } else {
1119 spin_unlock_irq(&data->txlock);
1120 data->suspend_count--;
1121 return -EBUSY;
1122 }
1123
1124 cancel_work_sync(&data->work);
1125
1126 btusb_stop_traffic(data);
1127 usb_kill_anchored_urbs(&data->tx_anchor);
1128
1129 return 0;
1130 }
1131
1132 static void play_deferred(struct btusb_data *data)
1133 {
1134 struct urb *urb;
1135 int err;
1136
1137 while ((urb = usb_get_from_anchor(&data->deferred))) {
1138 err = usb_submit_urb(urb, GFP_ATOMIC);
1139 if (err < 0)
1140 break;
1141
1142 data->tx_in_flight++;
1143 }
1144 usb_scuttle_anchored_urbs(&data->deferred);
1145 }
1146
1147 static int btusb_resume(struct usb_interface *intf)
1148 {
1149 struct btusb_data *data = usb_get_intfdata(intf);
1150 struct hci_dev *hdev = data->hdev;
1151 int err = 0;
1152
1153 BT_DBG("intf %p", intf);
1154
1155 if (--data->suspend_count)
1156 return 0;
1157
1158 if (!test_bit(HCI_RUNNING, &hdev->flags))
1159 goto done;
1160
1161 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1162 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1163 if (err < 0) {
1164 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1165 goto failed;
1166 }
1167 }
1168
1169 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1170 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1171 if (err < 0) {
1172 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1173 goto failed;
1174 }
1175
1176 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1177 }
1178
1179 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1180 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1181 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1182 else
1183 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1184 }
1185
1186 spin_lock_irq(&data->txlock);
1187 play_deferred(data);
1188 clear_bit(BTUSB_SUSPENDING, &data->flags);
1189 spin_unlock_irq(&data->txlock);
1190 schedule_work(&data->work);
1191
1192 return 0;
1193
1194 failed:
1195 usb_scuttle_anchored_urbs(&data->deferred);
1196 done:
1197 spin_lock_irq(&data->txlock);
1198 clear_bit(BTUSB_SUSPENDING, &data->flags);
1199 spin_unlock_irq(&data->txlock);
1200
1201 return err;
1202 }
1203 #endif
1204
1205 static struct usb_driver btusb_driver = {
1206 .name = "btusb",
1207 .probe = btusb_probe,
1208 .disconnect = btusb_disconnect,
1209 #ifdef CONFIG_PM
1210 .suspend = btusb_suspend,
1211 .resume = btusb_resume,
1212 #endif
1213 .id_table = btusb_table,
1214 .supports_autosuspend = 1,
1215 };
1216
1217 module_usb_driver(btusb_driver);
1218
1219 module_param(ignore_dga, bool, 0644);
1220 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1221
1222 module_param(ignore_csr, bool, 0644);
1223 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1224
1225 module_param(ignore_sniffer, bool, 0644);
1226 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1227
1228 module_param(disable_scofix, bool, 0644);
1229 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1230
1231 module_param(force_scofix, bool, 0644);
1232 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1233
1234 module_param(reset, bool, 0644);
1235 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1236
1237 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1238 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1239 MODULE_VERSION(VERSION);
1240 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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