]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/bluetooth/btusb.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth...
[mirror_ubuntu-artful-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/module.h>
25 #include <linux/usb.h>
26
27 #include <net/bluetooth/bluetooth.h>
28 #include <net/bluetooth/hci_core.h>
29
30 #define VERSION "0.6"
31
32 static bool ignore_dga;
33 static bool ignore_csr;
34 static bool ignore_sniffer;
35 static bool disable_scofix;
36 static bool force_scofix;
37
38 static bool reset = 1;
39
40 static struct usb_driver btusb_driver;
41
42 #define BTUSB_IGNORE 0x01
43 #define BTUSB_DIGIANSWER 0x02
44 #define BTUSB_CSR 0x04
45 #define BTUSB_SNIFFER 0x08
46 #define BTUSB_BCM92035 0x10
47 #define BTUSB_BROKEN_ISOC 0x20
48 #define BTUSB_WRONG_SCO_MTU 0x40
49 #define BTUSB_ATH3012 0x80
50
51 static struct usb_device_id btusb_table[] = {
52 /* Generic Bluetooth USB device */
53 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
54
55 /* Apple-specific (Broadcom) devices */
56 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
57
58 /* Broadcom SoftSailing reporting vendor specific */
59 { USB_DEVICE(0x0a5c, 0x21e1) },
60
61 /* Apple MacBookPro 7,1 */
62 { USB_DEVICE(0x05ac, 0x8213) },
63
64 /* Apple iMac11,1 */
65 { USB_DEVICE(0x05ac, 0x8215) },
66
67 /* Apple MacBookPro6,2 */
68 { USB_DEVICE(0x05ac, 0x8218) },
69
70 /* Apple MacBookAir3,1, MacBookAir3,2 */
71 { USB_DEVICE(0x05ac, 0x821b) },
72
73 /* Apple MacBookAir4,1 */
74 { USB_DEVICE(0x05ac, 0x821f) },
75
76 /* Apple MacBookPro8,2 */
77 { USB_DEVICE(0x05ac, 0x821a) },
78
79 /* Apple MacMini5,1 */
80 { USB_DEVICE(0x05ac, 0x8281) },
81
82 /* AVM BlueFRITZ! USB v2.0 */
83 { USB_DEVICE(0x057c, 0x3800) },
84
85 /* Bluetooth Ultraport Module from IBM */
86 { USB_DEVICE(0x04bf, 0x030a) },
87
88 /* ALPS Modules with non-standard id */
89 { USB_DEVICE(0x044e, 0x3001) },
90 { USB_DEVICE(0x044e, 0x3002) },
91
92 /* Ericsson with non-standard id */
93 { USB_DEVICE(0x0bdb, 0x1002) },
94
95 /* Canyon CN-BTU1 with HID interfaces */
96 { USB_DEVICE(0x0c10, 0x0000) },
97
98 /* Broadcom BCM20702A0 */
99 { USB_DEVICE(0x04ca, 0x2003) },
100 { USB_DEVICE(0x0489, 0xe042) },
101 { USB_DEVICE(0x413c, 0x8197) },
102
103 /* Foxconn - Hon Hai */
104 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
105
106 /*Broadcom devices with vendor specific id */
107 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
108
109 { } /* Terminating entry */
110 };
111
112 MODULE_DEVICE_TABLE(usb, btusb_table);
113
114 static struct usb_device_id blacklist_table[] = {
115 /* CSR BlueCore devices */
116 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
117
118 /* Broadcom BCM2033 without firmware */
119 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
120
121 /* Atheros 3011 with sflash firmware */
122 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
123 { USB_DEVICE(0x0cf3, 0xe019), .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 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
140
141 /* Atheros AR5BBU12 with sflash firmware */
142 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
143
144 /* Atheros AR5BBU12 with sflash firmware */
145 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
146 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
147
148 /* Broadcom BCM2035 */
149 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
150 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
151 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
152
153 /* Broadcom BCM2045 */
154 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
155 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
156
157 /* IBM/Lenovo ThinkPad with Broadcom chip */
158 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
159 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
160
161 /* HP laptop with Broadcom chip */
162 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
163
164 /* Dell laptop with Broadcom chip */
165 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
166
167 /* Dell Wireless 370 and 410 devices */
168 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
169 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
170
171 /* Belkin F8T012 and F8T013 devices */
172 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
173 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
174
175 /* Asus WL-BTD202 device */
176 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
177
178 /* Kensington Bluetooth USB adapter */
179 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
180
181 /* RTX Telecom based adapters with buggy SCO support */
182 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
183 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
184
185 /* CONWISE Technology based adapters with buggy SCO support */
186 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
187
188 /* Digianswer devices */
189 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
190 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
191
192 /* CSR BlueCore Bluetooth Sniffer */
193 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
194
195 /* Frontline ComProbe Bluetooth Sniffer */
196 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
197
198 { } /* Terminating entry */
199 };
200
201 #define BTUSB_MAX_ISOC_FRAMES 10
202
203 #define BTUSB_INTR_RUNNING 0
204 #define BTUSB_BULK_RUNNING 1
205 #define BTUSB_ISOC_RUNNING 2
206 #define BTUSB_SUSPENDING 3
207 #define BTUSB_DID_ISO_RESUME 4
208
209 struct btusb_data {
210 struct hci_dev *hdev;
211 struct usb_device *udev;
212 struct usb_interface *intf;
213 struct usb_interface *isoc;
214
215 spinlock_t lock;
216
217 unsigned long flags;
218
219 struct work_struct work;
220 struct work_struct waker;
221
222 struct usb_anchor tx_anchor;
223 struct usb_anchor intr_anchor;
224 struct usb_anchor bulk_anchor;
225 struct usb_anchor isoc_anchor;
226 struct usb_anchor deferred;
227 int tx_in_flight;
228 spinlock_t txlock;
229
230 struct usb_endpoint_descriptor *intr_ep;
231 struct usb_endpoint_descriptor *bulk_tx_ep;
232 struct usb_endpoint_descriptor *bulk_rx_ep;
233 struct usb_endpoint_descriptor *isoc_tx_ep;
234 struct usb_endpoint_descriptor *isoc_rx_ep;
235
236 __u8 cmdreq_type;
237
238 unsigned int sco_num;
239 int isoc_altsetting;
240 int suspend_count;
241 };
242
243 static int inc_tx(struct btusb_data *data)
244 {
245 unsigned long flags;
246 int rv;
247
248 spin_lock_irqsave(&data->txlock, flags);
249 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
250 if (!rv)
251 data->tx_in_flight++;
252 spin_unlock_irqrestore(&data->txlock, flags);
253
254 return rv;
255 }
256
257 static void btusb_intr_complete(struct urb *urb)
258 {
259 struct hci_dev *hdev = urb->context;
260 struct btusb_data *data = hci_get_drvdata(hdev);
261 int err;
262
263 BT_DBG("%s urb %p status %d count %d", hdev->name,
264 urb, urb->status, urb->actual_length);
265
266 if (!test_bit(HCI_RUNNING, &hdev->flags))
267 return;
268
269 if (urb->status == 0) {
270 hdev->stat.byte_rx += urb->actual_length;
271
272 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
273 urb->transfer_buffer,
274 urb->actual_length) < 0) {
275 BT_ERR("%s corrupted event packet", hdev->name);
276 hdev->stat.err_rx++;
277 }
278 }
279
280 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
281 return;
282
283 usb_mark_last_busy(data->udev);
284 usb_anchor_urb(urb, &data->intr_anchor);
285
286 err = usb_submit_urb(urb, GFP_ATOMIC);
287 if (err < 0) {
288 /* -EPERM: urb is being killed;
289 * -ENODEV: device got disconnected */
290 if (err != -EPERM && err != -ENODEV)
291 BT_ERR("%s urb %p failed to resubmit (%d)",
292 hdev->name, urb, -err);
293 usb_unanchor_urb(urb);
294 }
295 }
296
297 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
298 {
299 struct btusb_data *data = hci_get_drvdata(hdev);
300 struct urb *urb;
301 unsigned char *buf;
302 unsigned int pipe;
303 int err, size;
304
305 BT_DBG("%s", hdev->name);
306
307 if (!data->intr_ep)
308 return -ENODEV;
309
310 urb = usb_alloc_urb(0, mem_flags);
311 if (!urb)
312 return -ENOMEM;
313
314 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
315
316 buf = kmalloc(size, mem_flags);
317 if (!buf) {
318 usb_free_urb(urb);
319 return -ENOMEM;
320 }
321
322 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
323
324 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
325 btusb_intr_complete, hdev,
326 data->intr_ep->bInterval);
327
328 urb->transfer_flags |= URB_FREE_BUFFER;
329
330 usb_anchor_urb(urb, &data->intr_anchor);
331
332 err = usb_submit_urb(urb, mem_flags);
333 if (err < 0) {
334 if (err != -EPERM && err != -ENODEV)
335 BT_ERR("%s urb %p submission failed (%d)",
336 hdev->name, urb, -err);
337 usb_unanchor_urb(urb);
338 }
339
340 usb_free_urb(urb);
341
342 return err;
343 }
344
345 static void btusb_bulk_complete(struct urb *urb)
346 {
347 struct hci_dev *hdev = urb->context;
348 struct btusb_data *data = hci_get_drvdata(hdev);
349 int err;
350
351 BT_DBG("%s urb %p status %d count %d", hdev->name,
352 urb, urb->status, urb->actual_length);
353
354 if (!test_bit(HCI_RUNNING, &hdev->flags))
355 return;
356
357 if (urb->status == 0) {
358 hdev->stat.byte_rx += urb->actual_length;
359
360 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
361 urb->transfer_buffer,
362 urb->actual_length) < 0) {
363 BT_ERR("%s corrupted ACL packet", hdev->name);
364 hdev->stat.err_rx++;
365 }
366 }
367
368 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
369 return;
370
371 usb_anchor_urb(urb, &data->bulk_anchor);
372 usb_mark_last_busy(data->udev);
373
374 err = usb_submit_urb(urb, GFP_ATOMIC);
375 if (err < 0) {
376 /* -EPERM: urb is being killed;
377 * -ENODEV: device got disconnected */
378 if (err != -EPERM && err != -ENODEV)
379 BT_ERR("%s urb %p failed to resubmit (%d)",
380 hdev->name, urb, -err);
381 usb_unanchor_urb(urb);
382 }
383 }
384
385 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
386 {
387 struct btusb_data *data = hci_get_drvdata(hdev);
388 struct urb *urb;
389 unsigned char *buf;
390 unsigned int pipe;
391 int err, size = HCI_MAX_FRAME_SIZE;
392
393 BT_DBG("%s", hdev->name);
394
395 if (!data->bulk_rx_ep)
396 return -ENODEV;
397
398 urb = usb_alloc_urb(0, mem_flags);
399 if (!urb)
400 return -ENOMEM;
401
402 buf = kmalloc(size, mem_flags);
403 if (!buf) {
404 usb_free_urb(urb);
405 return -ENOMEM;
406 }
407
408 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
409
410 usb_fill_bulk_urb(urb, data->udev, pipe,
411 buf, size, btusb_bulk_complete, hdev);
412
413 urb->transfer_flags |= URB_FREE_BUFFER;
414
415 usb_mark_last_busy(data->udev);
416 usb_anchor_urb(urb, &data->bulk_anchor);
417
418 err = usb_submit_urb(urb, mem_flags);
419 if (err < 0) {
420 if (err != -EPERM && err != -ENODEV)
421 BT_ERR("%s urb %p submission failed (%d)",
422 hdev->name, urb, -err);
423 usb_unanchor_urb(urb);
424 }
425
426 usb_free_urb(urb);
427
428 return err;
429 }
430
431 static void btusb_isoc_complete(struct urb *urb)
432 {
433 struct hci_dev *hdev = urb->context;
434 struct btusb_data *data = hci_get_drvdata(hdev);
435 int i, err;
436
437 BT_DBG("%s urb %p status %d count %d", hdev->name,
438 urb, urb->status, urb->actual_length);
439
440 if (!test_bit(HCI_RUNNING, &hdev->flags))
441 return;
442
443 if (urb->status == 0) {
444 for (i = 0; i < urb->number_of_packets; i++) {
445 unsigned int offset = urb->iso_frame_desc[i].offset;
446 unsigned int length = urb->iso_frame_desc[i].actual_length;
447
448 if (urb->iso_frame_desc[i].status)
449 continue;
450
451 hdev->stat.byte_rx += length;
452
453 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
454 urb->transfer_buffer + offset,
455 length) < 0) {
456 BT_ERR("%s corrupted SCO packet", hdev->name);
457 hdev->stat.err_rx++;
458 }
459 }
460 }
461
462 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
463 return;
464
465 usb_anchor_urb(urb, &data->isoc_anchor);
466
467 err = usb_submit_urb(urb, GFP_ATOMIC);
468 if (err < 0) {
469 /* -EPERM: urb is being killed;
470 * -ENODEV: device got disconnected */
471 if (err != -EPERM && err != -ENODEV)
472 BT_ERR("%s urb %p failed to resubmit (%d)",
473 hdev->name, urb, -err);
474 usb_unanchor_urb(urb);
475 }
476 }
477
478 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
479 {
480 int i, offset = 0;
481
482 BT_DBG("len %d mtu %d", len, mtu);
483
484 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
485 i++, offset += mtu, len -= mtu) {
486 urb->iso_frame_desc[i].offset = offset;
487 urb->iso_frame_desc[i].length = mtu;
488 }
489
490 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
491 urb->iso_frame_desc[i].offset = offset;
492 urb->iso_frame_desc[i].length = len;
493 i++;
494 }
495
496 urb->number_of_packets = i;
497 }
498
499 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
500 {
501 struct btusb_data *data = hci_get_drvdata(hdev);
502 struct urb *urb;
503 unsigned char *buf;
504 unsigned int pipe;
505 int err, size;
506
507 BT_DBG("%s", hdev->name);
508
509 if (!data->isoc_rx_ep)
510 return -ENODEV;
511
512 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
513 if (!urb)
514 return -ENOMEM;
515
516 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
517 BTUSB_MAX_ISOC_FRAMES;
518
519 buf = kmalloc(size, mem_flags);
520 if (!buf) {
521 usb_free_urb(urb);
522 return -ENOMEM;
523 }
524
525 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
526
527 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
528 hdev, data->isoc_rx_ep->bInterval);
529
530 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
531
532 __fill_isoc_descriptor(urb, size,
533 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
534
535 usb_anchor_urb(urb, &data->isoc_anchor);
536
537 err = usb_submit_urb(urb, mem_flags);
538 if (err < 0) {
539 if (err != -EPERM && err != -ENODEV)
540 BT_ERR("%s urb %p submission failed (%d)",
541 hdev->name, urb, -err);
542 usb_unanchor_urb(urb);
543 }
544
545 usb_free_urb(urb);
546
547 return err;
548 }
549
550 static void btusb_tx_complete(struct urb *urb)
551 {
552 struct sk_buff *skb = urb->context;
553 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
554 struct btusb_data *data = hci_get_drvdata(hdev);
555
556 BT_DBG("%s urb %p status %d count %d", hdev->name,
557 urb, urb->status, urb->actual_length);
558
559 if (!test_bit(HCI_RUNNING, &hdev->flags))
560 goto done;
561
562 if (!urb->status)
563 hdev->stat.byte_tx += urb->transfer_buffer_length;
564 else
565 hdev->stat.err_tx++;
566
567 done:
568 spin_lock(&data->txlock);
569 data->tx_in_flight--;
570 spin_unlock(&data->txlock);
571
572 kfree(urb->setup_packet);
573
574 kfree_skb(skb);
575 }
576
577 static void btusb_isoc_tx_complete(struct urb *urb)
578 {
579 struct sk_buff *skb = urb->context;
580 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
581
582 BT_DBG("%s urb %p status %d count %d", hdev->name,
583 urb, urb->status, urb->actual_length);
584
585 if (!test_bit(HCI_RUNNING, &hdev->flags))
586 goto done;
587
588 if (!urb->status)
589 hdev->stat.byte_tx += urb->transfer_buffer_length;
590 else
591 hdev->stat.err_tx++;
592
593 done:
594 kfree(urb->setup_packet);
595
596 kfree_skb(skb);
597 }
598
599 static int btusb_open(struct hci_dev *hdev)
600 {
601 struct btusb_data *data = hci_get_drvdata(hdev);
602 int err;
603
604 BT_DBG("%s", hdev->name);
605
606 err = usb_autopm_get_interface(data->intf);
607 if (err < 0)
608 return err;
609
610 data->intf->needs_remote_wakeup = 1;
611
612 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
613 goto done;
614
615 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
616 goto done;
617
618 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
619 if (err < 0)
620 goto failed;
621
622 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
623 if (err < 0) {
624 usb_kill_anchored_urbs(&data->intr_anchor);
625 goto failed;
626 }
627
628 set_bit(BTUSB_BULK_RUNNING, &data->flags);
629 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
630
631 done:
632 usb_autopm_put_interface(data->intf);
633 return 0;
634
635 failed:
636 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
637 clear_bit(HCI_RUNNING, &hdev->flags);
638 usb_autopm_put_interface(data->intf);
639 return err;
640 }
641
642 static void btusb_stop_traffic(struct btusb_data *data)
643 {
644 usb_kill_anchored_urbs(&data->intr_anchor);
645 usb_kill_anchored_urbs(&data->bulk_anchor);
646 usb_kill_anchored_urbs(&data->isoc_anchor);
647 }
648
649 static int btusb_close(struct hci_dev *hdev)
650 {
651 struct btusb_data *data = hci_get_drvdata(hdev);
652 int err;
653
654 BT_DBG("%s", hdev->name);
655
656 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
657 return 0;
658
659 cancel_work_sync(&data->work);
660 cancel_work_sync(&data->waker);
661
662 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
663 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
664 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
665
666 btusb_stop_traffic(data);
667 err = usb_autopm_get_interface(data->intf);
668 if (err < 0)
669 goto failed;
670
671 data->intf->needs_remote_wakeup = 0;
672 usb_autopm_put_interface(data->intf);
673
674 failed:
675 usb_scuttle_anchored_urbs(&data->deferred);
676 return 0;
677 }
678
679 static int btusb_flush(struct hci_dev *hdev)
680 {
681 struct btusb_data *data = hci_get_drvdata(hdev);
682
683 BT_DBG("%s", hdev->name);
684
685 usb_kill_anchored_urbs(&data->tx_anchor);
686
687 return 0;
688 }
689
690 static int btusb_send_frame(struct sk_buff *skb)
691 {
692 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
693 struct btusb_data *data = hci_get_drvdata(hdev);
694 struct usb_ctrlrequest *dr;
695 struct urb *urb;
696 unsigned int pipe;
697 int err;
698
699 BT_DBG("%s", hdev->name);
700
701 if (!test_bit(HCI_RUNNING, &hdev->flags))
702 return -EBUSY;
703
704 switch (bt_cb(skb)->pkt_type) {
705 case HCI_COMMAND_PKT:
706 urb = usb_alloc_urb(0, GFP_ATOMIC);
707 if (!urb)
708 return -ENOMEM;
709
710 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
711 if (!dr) {
712 usb_free_urb(urb);
713 return -ENOMEM;
714 }
715
716 dr->bRequestType = data->cmdreq_type;
717 dr->bRequest = 0;
718 dr->wIndex = 0;
719 dr->wValue = 0;
720 dr->wLength = __cpu_to_le16(skb->len);
721
722 pipe = usb_sndctrlpipe(data->udev, 0x00);
723
724 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
725 skb->data, skb->len, btusb_tx_complete, skb);
726
727 hdev->stat.cmd_tx++;
728 break;
729
730 case HCI_ACLDATA_PKT:
731 if (!data->bulk_tx_ep)
732 return -ENODEV;
733
734 urb = usb_alloc_urb(0, GFP_ATOMIC);
735 if (!urb)
736 return -ENOMEM;
737
738 pipe = usb_sndbulkpipe(data->udev,
739 data->bulk_tx_ep->bEndpointAddress);
740
741 usb_fill_bulk_urb(urb, data->udev, pipe,
742 skb->data, skb->len, btusb_tx_complete, skb);
743
744 hdev->stat.acl_tx++;
745 break;
746
747 case HCI_SCODATA_PKT:
748 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
749 return -ENODEV;
750
751 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
752 if (!urb)
753 return -ENOMEM;
754
755 pipe = usb_sndisocpipe(data->udev,
756 data->isoc_tx_ep->bEndpointAddress);
757
758 usb_fill_int_urb(urb, data->udev, pipe,
759 skb->data, skb->len, btusb_isoc_tx_complete,
760 skb, data->isoc_tx_ep->bInterval);
761
762 urb->transfer_flags = URB_ISO_ASAP;
763
764 __fill_isoc_descriptor(urb, skb->len,
765 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
766
767 hdev->stat.sco_tx++;
768 goto skip_waking;
769
770 default:
771 return -EILSEQ;
772 }
773
774 err = inc_tx(data);
775 if (err) {
776 usb_anchor_urb(urb, &data->deferred);
777 schedule_work(&data->waker);
778 err = 0;
779 goto done;
780 }
781
782 skip_waking:
783 usb_anchor_urb(urb, &data->tx_anchor);
784
785 err = usb_submit_urb(urb, GFP_ATOMIC);
786 if (err < 0) {
787 if (err != -EPERM && err != -ENODEV)
788 BT_ERR("%s urb %p submission failed (%d)",
789 hdev->name, urb, -err);
790 kfree(urb->setup_packet);
791 usb_unanchor_urb(urb);
792 } else {
793 usb_mark_last_busy(data->udev);
794 }
795
796 done:
797 usb_free_urb(urb);
798 return err;
799 }
800
801 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
802 {
803 struct btusb_data *data = hci_get_drvdata(hdev);
804
805 BT_DBG("%s evt %d", hdev->name, evt);
806
807 if (hdev->conn_hash.sco_num != data->sco_num) {
808 data->sco_num = hdev->conn_hash.sco_num;
809 schedule_work(&data->work);
810 }
811 }
812
813 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
814 {
815 struct btusb_data *data = hci_get_drvdata(hdev);
816 struct usb_interface *intf = data->isoc;
817 struct usb_endpoint_descriptor *ep_desc;
818 int i, err;
819
820 if (!data->isoc)
821 return -ENODEV;
822
823 err = usb_set_interface(data->udev, 1, altsetting);
824 if (err < 0) {
825 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
826 return err;
827 }
828
829 data->isoc_altsetting = altsetting;
830
831 data->isoc_tx_ep = NULL;
832 data->isoc_rx_ep = NULL;
833
834 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
835 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
836
837 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
838 data->isoc_tx_ep = ep_desc;
839 continue;
840 }
841
842 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
843 data->isoc_rx_ep = ep_desc;
844 continue;
845 }
846 }
847
848 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
849 BT_ERR("%s invalid SCO descriptors", hdev->name);
850 return -ENODEV;
851 }
852
853 return 0;
854 }
855
856 static void btusb_work(struct work_struct *work)
857 {
858 struct btusb_data *data = container_of(work, struct btusb_data, work);
859 struct hci_dev *hdev = data->hdev;
860 int new_alts;
861 int err;
862
863 if (hdev->conn_hash.sco_num > 0) {
864 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
865 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
866 if (err < 0) {
867 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
868 usb_kill_anchored_urbs(&data->isoc_anchor);
869 return;
870 }
871
872 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
873 }
874
875 if (hdev->voice_setting & 0x0020) {
876 static const int alts[3] = { 2, 4, 5 };
877 new_alts = alts[hdev->conn_hash.sco_num - 1];
878 } else {
879 new_alts = hdev->conn_hash.sco_num;
880 }
881
882 if (data->isoc_altsetting != new_alts) {
883 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
884 usb_kill_anchored_urbs(&data->isoc_anchor);
885
886 if (__set_isoc_interface(hdev, new_alts) < 0)
887 return;
888 }
889
890 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
891 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
892 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
893 else
894 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
895 }
896 } else {
897 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
898 usb_kill_anchored_urbs(&data->isoc_anchor);
899
900 __set_isoc_interface(hdev, 0);
901 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
902 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
903 }
904 }
905
906 static void btusb_waker(struct work_struct *work)
907 {
908 struct btusb_data *data = container_of(work, struct btusb_data, waker);
909 int err;
910
911 err = usb_autopm_get_interface(data->intf);
912 if (err < 0)
913 return;
914
915 usb_autopm_put_interface(data->intf);
916 }
917
918 static int btusb_probe(struct usb_interface *intf,
919 const struct usb_device_id *id)
920 {
921 struct usb_endpoint_descriptor *ep_desc;
922 struct btusb_data *data;
923 struct hci_dev *hdev;
924 int i, err;
925
926 BT_DBG("intf %p id %p", intf, id);
927
928 /* interface numbers are hardcoded in the spec */
929 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
930 return -ENODEV;
931
932 if (!id->driver_info) {
933 const struct usb_device_id *match;
934 match = usb_match_id(intf, blacklist_table);
935 if (match)
936 id = match;
937 }
938
939 if (id->driver_info == BTUSB_IGNORE)
940 return -ENODEV;
941
942 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
943 return -ENODEV;
944
945 if (ignore_csr && id->driver_info & BTUSB_CSR)
946 return -ENODEV;
947
948 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
949 return -ENODEV;
950
951 if (id->driver_info & BTUSB_ATH3012) {
952 struct usb_device *udev = interface_to_usbdev(intf);
953
954 /* Old firmware would otherwise let ath3k driver load
955 * patch and sysconfig files */
956 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
957 return -ENODEV;
958 }
959
960 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
961 if (!data)
962 return -ENOMEM;
963
964 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
965 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
966
967 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
968 data->intr_ep = ep_desc;
969 continue;
970 }
971
972 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
973 data->bulk_tx_ep = ep_desc;
974 continue;
975 }
976
977 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
978 data->bulk_rx_ep = ep_desc;
979 continue;
980 }
981 }
982
983 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
984 return -ENODEV;
985
986 data->cmdreq_type = USB_TYPE_CLASS;
987
988 data->udev = interface_to_usbdev(intf);
989 data->intf = intf;
990
991 spin_lock_init(&data->lock);
992
993 INIT_WORK(&data->work, btusb_work);
994 INIT_WORK(&data->waker, btusb_waker);
995 spin_lock_init(&data->txlock);
996
997 init_usb_anchor(&data->tx_anchor);
998 init_usb_anchor(&data->intr_anchor);
999 init_usb_anchor(&data->bulk_anchor);
1000 init_usb_anchor(&data->isoc_anchor);
1001 init_usb_anchor(&data->deferred);
1002
1003 hdev = hci_alloc_dev();
1004 if (!hdev)
1005 return -ENOMEM;
1006
1007 hdev->bus = HCI_USB;
1008 hci_set_drvdata(hdev, data);
1009
1010 data->hdev = hdev;
1011
1012 SET_HCIDEV_DEV(hdev, &intf->dev);
1013
1014 hdev->open = btusb_open;
1015 hdev->close = btusb_close;
1016 hdev->flush = btusb_flush;
1017 hdev->send = btusb_send_frame;
1018 hdev->notify = btusb_notify;
1019
1020 /* Interface numbers are hardcoded in the specification */
1021 data->isoc = usb_ifnum_to_if(data->udev, 1);
1022
1023 if (!reset)
1024 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1025
1026 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1027 if (!disable_scofix)
1028 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1029 }
1030
1031 if (id->driver_info & BTUSB_BROKEN_ISOC)
1032 data->isoc = NULL;
1033
1034 if (id->driver_info & BTUSB_DIGIANSWER) {
1035 data->cmdreq_type = USB_TYPE_VENDOR;
1036 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1037 }
1038
1039 if (id->driver_info & BTUSB_CSR) {
1040 struct usb_device *udev = data->udev;
1041
1042 /* Old firmware would otherwise execute USB reset */
1043 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1044 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1045 }
1046
1047 if (id->driver_info & BTUSB_SNIFFER) {
1048 struct usb_device *udev = data->udev;
1049
1050 /* New sniffer firmware has crippled HCI interface */
1051 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1052 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1053
1054 data->isoc = NULL;
1055 }
1056
1057 if (id->driver_info & BTUSB_BCM92035) {
1058 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1059 struct sk_buff *skb;
1060
1061 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1062 if (skb) {
1063 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1064 skb_queue_tail(&hdev->driver_init, skb);
1065 }
1066 }
1067
1068 if (data->isoc) {
1069 err = usb_driver_claim_interface(&btusb_driver,
1070 data->isoc, data);
1071 if (err < 0) {
1072 hci_free_dev(hdev);
1073 return err;
1074 }
1075 }
1076
1077 err = hci_register_dev(hdev);
1078 if (err < 0) {
1079 hci_free_dev(hdev);
1080 return err;
1081 }
1082
1083 usb_set_intfdata(intf, data);
1084
1085 return 0;
1086 }
1087
1088 static void btusb_disconnect(struct usb_interface *intf)
1089 {
1090 struct btusb_data *data = usb_get_intfdata(intf);
1091 struct hci_dev *hdev;
1092
1093 BT_DBG("intf %p", intf);
1094
1095 if (!data)
1096 return;
1097
1098 hdev = data->hdev;
1099 usb_set_intfdata(data->intf, NULL);
1100
1101 if (data->isoc)
1102 usb_set_intfdata(data->isoc, NULL);
1103
1104 hci_unregister_dev(hdev);
1105
1106 if (intf == data->isoc)
1107 usb_driver_release_interface(&btusb_driver, data->intf);
1108 else if (data->isoc)
1109 usb_driver_release_interface(&btusb_driver, data->isoc);
1110
1111 hci_free_dev(hdev);
1112 }
1113
1114 #ifdef CONFIG_PM
1115 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1116 {
1117 struct btusb_data *data = usb_get_intfdata(intf);
1118
1119 BT_DBG("intf %p", intf);
1120
1121 if (data->suspend_count++)
1122 return 0;
1123
1124 spin_lock_irq(&data->txlock);
1125 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1126 set_bit(BTUSB_SUSPENDING, &data->flags);
1127 spin_unlock_irq(&data->txlock);
1128 } else {
1129 spin_unlock_irq(&data->txlock);
1130 data->suspend_count--;
1131 return -EBUSY;
1132 }
1133
1134 cancel_work_sync(&data->work);
1135
1136 btusb_stop_traffic(data);
1137 usb_kill_anchored_urbs(&data->tx_anchor);
1138
1139 return 0;
1140 }
1141
1142 static void play_deferred(struct btusb_data *data)
1143 {
1144 struct urb *urb;
1145 int err;
1146
1147 while ((urb = usb_get_from_anchor(&data->deferred))) {
1148 err = usb_submit_urb(urb, GFP_ATOMIC);
1149 if (err < 0)
1150 break;
1151
1152 data->tx_in_flight++;
1153 }
1154 usb_scuttle_anchored_urbs(&data->deferred);
1155 }
1156
1157 static int btusb_resume(struct usb_interface *intf)
1158 {
1159 struct btusb_data *data = usb_get_intfdata(intf);
1160 struct hci_dev *hdev = data->hdev;
1161 int err = 0;
1162
1163 BT_DBG("intf %p", intf);
1164
1165 if (--data->suspend_count)
1166 return 0;
1167
1168 if (!test_bit(HCI_RUNNING, &hdev->flags))
1169 goto done;
1170
1171 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1172 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1173 if (err < 0) {
1174 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1175 goto failed;
1176 }
1177 }
1178
1179 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1180 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1181 if (err < 0) {
1182 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1183 goto failed;
1184 }
1185
1186 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1187 }
1188
1189 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1190 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1191 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1192 else
1193 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1194 }
1195
1196 spin_lock_irq(&data->txlock);
1197 play_deferred(data);
1198 clear_bit(BTUSB_SUSPENDING, &data->flags);
1199 spin_unlock_irq(&data->txlock);
1200 schedule_work(&data->work);
1201
1202 return 0;
1203
1204 failed:
1205 usb_scuttle_anchored_urbs(&data->deferred);
1206 done:
1207 spin_lock_irq(&data->txlock);
1208 clear_bit(BTUSB_SUSPENDING, &data->flags);
1209 spin_unlock_irq(&data->txlock);
1210
1211 return err;
1212 }
1213 #endif
1214
1215 static struct usb_driver btusb_driver = {
1216 .name = "btusb",
1217 .probe = btusb_probe,
1218 .disconnect = btusb_disconnect,
1219 #ifdef CONFIG_PM
1220 .suspend = btusb_suspend,
1221 .resume = btusb_resume,
1222 #endif
1223 .id_table = btusb_table,
1224 .supports_autosuspend = 1,
1225 .disable_hub_initiated_lpm = 1,
1226 };
1227
1228 module_usb_driver(btusb_driver);
1229
1230 module_param(ignore_dga, bool, 0644);
1231 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1232
1233 module_param(ignore_csr, bool, 0644);
1234 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1235
1236 module_param(ignore_sniffer, bool, 0644);
1237 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1238
1239 module_param(disable_scofix, bool, 0644);
1240 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1241
1242 module_param(force_scofix, bool, 0644);
1243 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1244
1245 module_param(reset, bool, 0644);
1246 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1247
1248 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1249 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1250 MODULE_VERSION(VERSION);
1251 MODULE_LICENSE("GPL");
Ubuntu Artful kernel mirror