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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm...
[mirror_ubuntu-bionic-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(0x0b05, 0x17b5) },
100 { USB_DEVICE(0x04ca, 0x2003) },
101 { USB_DEVICE(0x0489, 0xe042) },
102 { USB_DEVICE(0x413c, 0x8197) },
103
104 /* Foxconn - Hon Hai */
105 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
106
107 /*Broadcom devices with vendor specific id */
108 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
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(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
125 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
126 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
127 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
128 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
129
130 /* Atheros AR9285 Malbec with sflash firmware */
131 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
132
133 /* Atheros 3012 with sflash firmware */
134 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
136 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
142
143 /* Atheros AR5BBU12 with sflash firmware */
144 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
145
146 /* Atheros AR5BBU12 with sflash firmware */
147 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
148 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
149
150 /* Broadcom BCM2035 */
151 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
152 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
153 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
154
155 /* Broadcom BCM2045 */
156 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
157 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159 /* IBM/Lenovo ThinkPad with Broadcom chip */
160 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
161 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163 /* HP laptop with Broadcom chip */
164 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
165
166 /* Dell laptop with Broadcom chip */
167 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
168
169 /* Dell Wireless 370 and 410 devices */
170 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
171 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173 /* Belkin F8T012 and F8T013 devices */
174 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
175 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
176
177 /* Asus WL-BTD202 device */
178 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
179
180 /* Kensington Bluetooth USB adapter */
181 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
182
183 /* RTX Telecom based adapters with buggy SCO support */
184 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
185 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
186
187 /* CONWISE Technology based adapters with buggy SCO support */
188 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
189
190 /* Digianswer devices */
191 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
192 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
193
194 /* CSR BlueCore Bluetooth Sniffer */
195 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
196
197 /* Frontline ComProbe Bluetooth Sniffer */
198 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
199
200 { } /* Terminating entry */
201 };
202
203 #define BTUSB_MAX_ISOC_FRAMES 10
204
205 #define BTUSB_INTR_RUNNING 0
206 #define BTUSB_BULK_RUNNING 1
207 #define BTUSB_ISOC_RUNNING 2
208 #define BTUSB_SUSPENDING 3
209 #define BTUSB_DID_ISO_RESUME 4
210
211 struct btusb_data {
212 struct hci_dev *hdev;
213 struct usb_device *udev;
214 struct usb_interface *intf;
215 struct usb_interface *isoc;
216
217 spinlock_t lock;
218
219 unsigned long flags;
220
221 struct work_struct work;
222 struct work_struct waker;
223
224 struct usb_anchor tx_anchor;
225 struct usb_anchor intr_anchor;
226 struct usb_anchor bulk_anchor;
227 struct usb_anchor isoc_anchor;
228 struct usb_anchor deferred;
229 int tx_in_flight;
230 spinlock_t txlock;
231
232 struct usb_endpoint_descriptor *intr_ep;
233 struct usb_endpoint_descriptor *bulk_tx_ep;
234 struct usb_endpoint_descriptor *bulk_rx_ep;
235 struct usb_endpoint_descriptor *isoc_tx_ep;
236 struct usb_endpoint_descriptor *isoc_rx_ep;
237
238 __u8 cmdreq_type;
239
240 unsigned int sco_num;
241 int isoc_altsetting;
242 int suspend_count;
243 };
244
245 static int inc_tx(struct btusb_data *data)
246 {
247 unsigned long flags;
248 int rv;
249
250 spin_lock_irqsave(&data->txlock, flags);
251 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
252 if (!rv)
253 data->tx_in_flight++;
254 spin_unlock_irqrestore(&data->txlock, flags);
255
256 return rv;
257 }
258
259 static void btusb_intr_complete(struct urb *urb)
260 {
261 struct hci_dev *hdev = urb->context;
262 struct btusb_data *data = hci_get_drvdata(hdev);
263 int err;
264
265 BT_DBG("%s urb %p status %d count %d", hdev->name,
266 urb, urb->status, urb->actual_length);
267
268 if (!test_bit(HCI_RUNNING, &hdev->flags))
269 return;
270
271 if (urb->status == 0) {
272 hdev->stat.byte_rx += urb->actual_length;
273
274 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
275 urb->transfer_buffer,
276 urb->actual_length) < 0) {
277 BT_ERR("%s corrupted event packet", hdev->name);
278 hdev->stat.err_rx++;
279 }
280 }
281
282 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
283 return;
284
285 usb_mark_last_busy(data->udev);
286 usb_anchor_urb(urb, &data->intr_anchor);
287
288 err = usb_submit_urb(urb, GFP_ATOMIC);
289 if (err < 0) {
290 /* -EPERM: urb is being killed;
291 * -ENODEV: device got disconnected */
292 if (err != -EPERM && err != -ENODEV)
293 BT_ERR("%s urb %p failed to resubmit (%d)",
294 hdev->name, urb, -err);
295 usb_unanchor_urb(urb);
296 }
297 }
298
299 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
300 {
301 struct btusb_data *data = hci_get_drvdata(hdev);
302 struct urb *urb;
303 unsigned char *buf;
304 unsigned int pipe;
305 int err, size;
306
307 BT_DBG("%s", hdev->name);
308
309 if (!data->intr_ep)
310 return -ENODEV;
311
312 urb = usb_alloc_urb(0, mem_flags);
313 if (!urb)
314 return -ENOMEM;
315
316 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
317
318 buf = kmalloc(size, mem_flags);
319 if (!buf) {
320 usb_free_urb(urb);
321 return -ENOMEM;
322 }
323
324 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
325
326 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
327 btusb_intr_complete, hdev,
328 data->intr_ep->bInterval);
329
330 urb->transfer_flags |= URB_FREE_BUFFER;
331
332 usb_anchor_urb(urb, &data->intr_anchor);
333
334 err = usb_submit_urb(urb, mem_flags);
335 if (err < 0) {
336 if (err != -EPERM && err != -ENODEV)
337 BT_ERR("%s urb %p submission failed (%d)",
338 hdev->name, urb, -err);
339 usb_unanchor_urb(urb);
340 }
341
342 usb_free_urb(urb);
343
344 return err;
345 }
346
347 static void btusb_bulk_complete(struct urb *urb)
348 {
349 struct hci_dev *hdev = urb->context;
350 struct btusb_data *data = hci_get_drvdata(hdev);
351 int err;
352
353 BT_DBG("%s urb %p status %d count %d", hdev->name,
354 urb, urb->status, urb->actual_length);
355
356 if (!test_bit(HCI_RUNNING, &hdev->flags))
357 return;
358
359 if (urb->status == 0) {
360 hdev->stat.byte_rx += urb->actual_length;
361
362 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
363 urb->transfer_buffer,
364 urb->actual_length) < 0) {
365 BT_ERR("%s corrupted ACL packet", hdev->name);
366 hdev->stat.err_rx++;
367 }
368 }
369
370 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
371 return;
372
373 usb_anchor_urb(urb, &data->bulk_anchor);
374 usb_mark_last_busy(data->udev);
375
376 err = usb_submit_urb(urb, GFP_ATOMIC);
377 if (err < 0) {
378 /* -EPERM: urb is being killed;
379 * -ENODEV: device got disconnected */
380 if (err != -EPERM && err != -ENODEV)
381 BT_ERR("%s urb %p failed to resubmit (%d)",
382 hdev->name, urb, -err);
383 usb_unanchor_urb(urb);
384 }
385 }
386
387 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
388 {
389 struct btusb_data *data = hci_get_drvdata(hdev);
390 struct urb *urb;
391 unsigned char *buf;
392 unsigned int pipe;
393 int err, size = HCI_MAX_FRAME_SIZE;
394
395 BT_DBG("%s", hdev->name);
396
397 if (!data->bulk_rx_ep)
398 return -ENODEV;
399
400 urb = usb_alloc_urb(0, mem_flags);
401 if (!urb)
402 return -ENOMEM;
403
404 buf = kmalloc(size, mem_flags);
405 if (!buf) {
406 usb_free_urb(urb);
407 return -ENOMEM;
408 }
409
410 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
411
412 usb_fill_bulk_urb(urb, data->udev, pipe,
413 buf, size, btusb_bulk_complete, hdev);
414
415 urb->transfer_flags |= URB_FREE_BUFFER;
416
417 usb_mark_last_busy(data->udev);
418 usb_anchor_urb(urb, &data->bulk_anchor);
419
420 err = usb_submit_urb(urb, mem_flags);
421 if (err < 0) {
422 if (err != -EPERM && err != -ENODEV)
423 BT_ERR("%s urb %p submission failed (%d)",
424 hdev->name, urb, -err);
425 usb_unanchor_urb(urb);
426 }
427
428 usb_free_urb(urb);
429
430 return err;
431 }
432
433 static void btusb_isoc_complete(struct urb *urb)
434 {
435 struct hci_dev *hdev = urb->context;
436 struct btusb_data *data = hci_get_drvdata(hdev);
437 int i, err;
438
439 BT_DBG("%s urb %p status %d count %d", hdev->name,
440 urb, urb->status, urb->actual_length);
441
442 if (!test_bit(HCI_RUNNING, &hdev->flags))
443 return;
444
445 if (urb->status == 0) {
446 for (i = 0; i < urb->number_of_packets; i++) {
447 unsigned int offset = urb->iso_frame_desc[i].offset;
448 unsigned int length = urb->iso_frame_desc[i].actual_length;
449
450 if (urb->iso_frame_desc[i].status)
451 continue;
452
453 hdev->stat.byte_rx += length;
454
455 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
456 urb->transfer_buffer + offset,
457 length) < 0) {
458 BT_ERR("%s corrupted SCO packet", hdev->name);
459 hdev->stat.err_rx++;
460 }
461 }
462 }
463
464 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
465 return;
466
467 usb_anchor_urb(urb, &data->isoc_anchor);
468
469 err = usb_submit_urb(urb, GFP_ATOMIC);
470 if (err < 0) {
471 /* -EPERM: urb is being killed;
472 * -ENODEV: device got disconnected */
473 if (err != -EPERM && err != -ENODEV)
474 BT_ERR("%s urb %p failed to resubmit (%d)",
475 hdev->name, urb, -err);
476 usb_unanchor_urb(urb);
477 }
478 }
479
480 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
481 {
482 int i, offset = 0;
483
484 BT_DBG("len %d mtu %d", len, mtu);
485
486 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
487 i++, offset += mtu, len -= mtu) {
488 urb->iso_frame_desc[i].offset = offset;
489 urb->iso_frame_desc[i].length = mtu;
490 }
491
492 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
493 urb->iso_frame_desc[i].offset = offset;
494 urb->iso_frame_desc[i].length = len;
495 i++;
496 }
497
498 urb->number_of_packets = i;
499 }
500
501 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
502 {
503 struct btusb_data *data = hci_get_drvdata(hdev);
504 struct urb *urb;
505 unsigned char *buf;
506 unsigned int pipe;
507 int err, size;
508
509 BT_DBG("%s", hdev->name);
510
511 if (!data->isoc_rx_ep)
512 return -ENODEV;
513
514 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
515 if (!urb)
516 return -ENOMEM;
517
518 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
519 BTUSB_MAX_ISOC_FRAMES;
520
521 buf = kmalloc(size, mem_flags);
522 if (!buf) {
523 usb_free_urb(urb);
524 return -ENOMEM;
525 }
526
527 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
528
529 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
530 hdev, data->isoc_rx_ep->bInterval);
531
532 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
533
534 __fill_isoc_descriptor(urb, size,
535 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
536
537 usb_anchor_urb(urb, &data->isoc_anchor);
538
539 err = usb_submit_urb(urb, mem_flags);
540 if (err < 0) {
541 if (err != -EPERM && err != -ENODEV)
542 BT_ERR("%s urb %p submission failed (%d)",
543 hdev->name, urb, -err);
544 usb_unanchor_urb(urb);
545 }
546
547 usb_free_urb(urb);
548
549 return err;
550 }
551
552 static void btusb_tx_complete(struct urb *urb)
553 {
554 struct sk_buff *skb = urb->context;
555 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
556 struct btusb_data *data = hci_get_drvdata(hdev);
557
558 BT_DBG("%s urb %p status %d count %d", hdev->name,
559 urb, urb->status, urb->actual_length);
560
561 if (!test_bit(HCI_RUNNING, &hdev->flags))
562 goto done;
563
564 if (!urb->status)
565 hdev->stat.byte_tx += urb->transfer_buffer_length;
566 else
567 hdev->stat.err_tx++;
568
569 done:
570 spin_lock(&data->txlock);
571 data->tx_in_flight--;
572 spin_unlock(&data->txlock);
573
574 kfree(urb->setup_packet);
575
576 kfree_skb(skb);
577 }
578
579 static void btusb_isoc_tx_complete(struct urb *urb)
580 {
581 struct sk_buff *skb = urb->context;
582 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
583
584 BT_DBG("%s urb %p status %d count %d", hdev->name,
585 urb, urb->status, urb->actual_length);
586
587 if (!test_bit(HCI_RUNNING, &hdev->flags))
588 goto done;
589
590 if (!urb->status)
591 hdev->stat.byte_tx += urb->transfer_buffer_length;
592 else
593 hdev->stat.err_tx++;
594
595 done:
596 kfree(urb->setup_packet);
597
598 kfree_skb(skb);
599 }
600
601 static int btusb_open(struct hci_dev *hdev)
602 {
603 struct btusb_data *data = hci_get_drvdata(hdev);
604 int err;
605
606 BT_DBG("%s", hdev->name);
607
608 err = usb_autopm_get_interface(data->intf);
609 if (err < 0)
610 return err;
611
612 data->intf->needs_remote_wakeup = 1;
613
614 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
615 goto done;
616
617 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
618 goto done;
619
620 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
621 if (err < 0)
622 goto failed;
623
624 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
625 if (err < 0) {
626 usb_kill_anchored_urbs(&data->intr_anchor);
627 goto failed;
628 }
629
630 set_bit(BTUSB_BULK_RUNNING, &data->flags);
631 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
632
633 done:
634 usb_autopm_put_interface(data->intf);
635 return 0;
636
637 failed:
638 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
639 clear_bit(HCI_RUNNING, &hdev->flags);
640 usb_autopm_put_interface(data->intf);
641 return err;
642 }
643
644 static void btusb_stop_traffic(struct btusb_data *data)
645 {
646 usb_kill_anchored_urbs(&data->intr_anchor);
647 usb_kill_anchored_urbs(&data->bulk_anchor);
648 usb_kill_anchored_urbs(&data->isoc_anchor);
649 }
650
651 static int btusb_close(struct hci_dev *hdev)
652 {
653 struct btusb_data *data = hci_get_drvdata(hdev);
654 int err;
655
656 BT_DBG("%s", hdev->name);
657
658 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
659 return 0;
660
661 cancel_work_sync(&data->work);
662 cancel_work_sync(&data->waker);
663
664 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
665 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
666 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
667
668 btusb_stop_traffic(data);
669 err = usb_autopm_get_interface(data->intf);
670 if (err < 0)
671 goto failed;
672
673 data->intf->needs_remote_wakeup = 0;
674 usb_autopm_put_interface(data->intf);
675
676 failed:
677 usb_scuttle_anchored_urbs(&data->deferred);
678 return 0;
679 }
680
681 static int btusb_flush(struct hci_dev *hdev)
682 {
683 struct btusb_data *data = hci_get_drvdata(hdev);
684
685 BT_DBG("%s", hdev->name);
686
687 usb_kill_anchored_urbs(&data->tx_anchor);
688
689 return 0;
690 }
691
692 static int btusb_send_frame(struct sk_buff *skb)
693 {
694 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
695 struct btusb_data *data = hci_get_drvdata(hdev);
696 struct usb_ctrlrequest *dr;
697 struct urb *urb;
698 unsigned int pipe;
699 int err;
700
701 BT_DBG("%s", hdev->name);
702
703 if (!test_bit(HCI_RUNNING, &hdev->flags))
704 return -EBUSY;
705
706 switch (bt_cb(skb)->pkt_type) {
707 case HCI_COMMAND_PKT:
708 urb = usb_alloc_urb(0, GFP_ATOMIC);
709 if (!urb)
710 return -ENOMEM;
711
712 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
713 if (!dr) {
714 usb_free_urb(urb);
715 return -ENOMEM;
716 }
717
718 dr->bRequestType = data->cmdreq_type;
719 dr->bRequest = 0;
720 dr->wIndex = 0;
721 dr->wValue = 0;
722 dr->wLength = __cpu_to_le16(skb->len);
723
724 pipe = usb_sndctrlpipe(data->udev, 0x00);
725
726 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
727 skb->data, skb->len, btusb_tx_complete, skb);
728
729 hdev->stat.cmd_tx++;
730 break;
731
732 case HCI_ACLDATA_PKT:
733 if (!data->bulk_tx_ep)
734 return -ENODEV;
735
736 urb = usb_alloc_urb(0, GFP_ATOMIC);
737 if (!urb)
738 return -ENOMEM;
739
740 pipe = usb_sndbulkpipe(data->udev,
741 data->bulk_tx_ep->bEndpointAddress);
742
743 usb_fill_bulk_urb(urb, data->udev, pipe,
744 skb->data, skb->len, btusb_tx_complete, skb);
745
746 hdev->stat.acl_tx++;
747 break;
748
749 case HCI_SCODATA_PKT:
750 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
751 return -ENODEV;
752
753 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
754 if (!urb)
755 return -ENOMEM;
756
757 pipe = usb_sndisocpipe(data->udev,
758 data->isoc_tx_ep->bEndpointAddress);
759
760 usb_fill_int_urb(urb, data->udev, pipe,
761 skb->data, skb->len, btusb_isoc_tx_complete,
762 skb, data->isoc_tx_ep->bInterval);
763
764 urb->transfer_flags = URB_ISO_ASAP;
765
766 __fill_isoc_descriptor(urb, skb->len,
767 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
768
769 hdev->stat.sco_tx++;
770 goto skip_waking;
771
772 default:
773 return -EILSEQ;
774 }
775
776 err = inc_tx(data);
777 if (err) {
778 usb_anchor_urb(urb, &data->deferred);
779 schedule_work(&data->waker);
780 err = 0;
781 goto done;
782 }
783
784 skip_waking:
785 usb_anchor_urb(urb, &data->tx_anchor);
786
787 err = usb_submit_urb(urb, GFP_ATOMIC);
788 if (err < 0) {
789 if (err != -EPERM && err != -ENODEV)
790 BT_ERR("%s urb %p submission failed (%d)",
791 hdev->name, urb, -err);
792 kfree(urb->setup_packet);
793 usb_unanchor_urb(urb);
794 } else {
795 usb_mark_last_busy(data->udev);
796 }
797
798 done:
799 usb_free_urb(urb);
800 return err;
801 }
802
803 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
804 {
805 struct btusb_data *data = hci_get_drvdata(hdev);
806
807 BT_DBG("%s evt %d", hdev->name, evt);
808
809 if (hdev->conn_hash.sco_num != data->sco_num) {
810 data->sco_num = hdev->conn_hash.sco_num;
811 schedule_work(&data->work);
812 }
813 }
814
815 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
816 {
817 struct btusb_data *data = hci_get_drvdata(hdev);
818 struct usb_interface *intf = data->isoc;
819 struct usb_endpoint_descriptor *ep_desc;
820 int i, err;
821
822 if (!data->isoc)
823 return -ENODEV;
824
825 err = usb_set_interface(data->udev, 1, altsetting);
826 if (err < 0) {
827 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
828 return err;
829 }
830
831 data->isoc_altsetting = altsetting;
832
833 data->isoc_tx_ep = NULL;
834 data->isoc_rx_ep = NULL;
835
836 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
837 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
838
839 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
840 data->isoc_tx_ep = ep_desc;
841 continue;
842 }
843
844 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
845 data->isoc_rx_ep = ep_desc;
846 continue;
847 }
848 }
849
850 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
851 BT_ERR("%s invalid SCO descriptors", hdev->name);
852 return -ENODEV;
853 }
854
855 return 0;
856 }
857
858 static void btusb_work(struct work_struct *work)
859 {
860 struct btusb_data *data = container_of(work, struct btusb_data, work);
861 struct hci_dev *hdev = data->hdev;
862 int new_alts;
863 int err;
864
865 if (hdev->conn_hash.sco_num > 0) {
866 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
867 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
868 if (err < 0) {
869 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
870 usb_kill_anchored_urbs(&data->isoc_anchor);
871 return;
872 }
873
874 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
875 }
876
877 if (hdev->voice_setting & 0x0020) {
878 static const int alts[3] = { 2, 4, 5 };
879 new_alts = alts[hdev->conn_hash.sco_num - 1];
880 } else {
881 new_alts = hdev->conn_hash.sco_num;
882 }
883
884 if (data->isoc_altsetting != new_alts) {
885 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
886 usb_kill_anchored_urbs(&data->isoc_anchor);
887
888 if (__set_isoc_interface(hdev, new_alts) < 0)
889 return;
890 }
891
892 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
893 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
894 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
895 else
896 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
897 }
898 } else {
899 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
900 usb_kill_anchored_urbs(&data->isoc_anchor);
901
902 __set_isoc_interface(hdev, 0);
903 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
904 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
905 }
906 }
907
908 static void btusb_waker(struct work_struct *work)
909 {
910 struct btusb_data *data = container_of(work, struct btusb_data, waker);
911 int err;
912
913 err = usb_autopm_get_interface(data->intf);
914 if (err < 0)
915 return;
916
917 usb_autopm_put_interface(data->intf);
918 }
919
920 static int btusb_probe(struct usb_interface *intf,
921 const struct usb_device_id *id)
922 {
923 struct usb_endpoint_descriptor *ep_desc;
924 struct btusb_data *data;
925 struct hci_dev *hdev;
926 int i, err;
927
928 BT_DBG("intf %p id %p", intf, id);
929
930 /* interface numbers are hardcoded in the spec */
931 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
932 return -ENODEV;
933
934 if (!id->driver_info) {
935 const struct usb_device_id *match;
936 match = usb_match_id(intf, blacklist_table);
937 if (match)
938 id = match;
939 }
940
941 if (id->driver_info == BTUSB_IGNORE)
942 return -ENODEV;
943
944 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
945 return -ENODEV;
946
947 if (ignore_csr && id->driver_info & BTUSB_CSR)
948 return -ENODEV;
949
950 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
951 return -ENODEV;
952
953 if (id->driver_info & BTUSB_ATH3012) {
954 struct usb_device *udev = interface_to_usbdev(intf);
955
956 /* Old firmware would otherwise let ath3k driver load
957 * patch and sysconfig files */
958 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
959 return -ENODEV;
960 }
961
962 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
963 if (!data)
964 return -ENOMEM;
965
966 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
967 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
968
969 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
970 data->intr_ep = ep_desc;
971 continue;
972 }
973
974 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
975 data->bulk_tx_ep = ep_desc;
976 continue;
977 }
978
979 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
980 data->bulk_rx_ep = ep_desc;
981 continue;
982 }
983 }
984
985 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
986 return -ENODEV;
987
988 data->cmdreq_type = USB_TYPE_CLASS;
989
990 data->udev = interface_to_usbdev(intf);
991 data->intf = intf;
992
993 spin_lock_init(&data->lock);
994
995 INIT_WORK(&data->work, btusb_work);
996 INIT_WORK(&data->waker, btusb_waker);
997 spin_lock_init(&data->txlock);
998
999 init_usb_anchor(&data->tx_anchor);
1000 init_usb_anchor(&data->intr_anchor);
1001 init_usb_anchor(&data->bulk_anchor);
1002 init_usb_anchor(&data->isoc_anchor);
1003 init_usb_anchor(&data->deferred);
1004
1005 hdev = hci_alloc_dev();
1006 if (!hdev)
1007 return -ENOMEM;
1008
1009 hdev->bus = HCI_USB;
1010 hci_set_drvdata(hdev, data);
1011
1012 data->hdev = hdev;
1013
1014 SET_HCIDEV_DEV(hdev, &intf->dev);
1015
1016 hdev->open = btusb_open;
1017 hdev->close = btusb_close;
1018 hdev->flush = btusb_flush;
1019 hdev->send = btusb_send_frame;
1020 hdev->notify = btusb_notify;
1021
1022 /* Interface numbers are hardcoded in the specification */
1023 data->isoc = usb_ifnum_to_if(data->udev, 1);
1024
1025 if (!reset)
1026 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1027
1028 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1029 if (!disable_scofix)
1030 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1031 }
1032
1033 if (id->driver_info & BTUSB_BROKEN_ISOC)
1034 data->isoc = NULL;
1035
1036 if (id->driver_info & BTUSB_DIGIANSWER) {
1037 data->cmdreq_type = USB_TYPE_VENDOR;
1038 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1039 }
1040
1041 if (id->driver_info & BTUSB_CSR) {
1042 struct usb_device *udev = data->udev;
1043
1044 /* Old firmware would otherwise execute USB reset */
1045 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1046 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1047 }
1048
1049 if (id->driver_info & BTUSB_SNIFFER) {
1050 struct usb_device *udev = data->udev;
1051
1052 /* New sniffer firmware has crippled HCI interface */
1053 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1054 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1055
1056 data->isoc = NULL;
1057 }
1058
1059 if (id->driver_info & BTUSB_BCM92035) {
1060 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1061 struct sk_buff *skb;
1062
1063 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1064 if (skb) {
1065 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1066 skb_queue_tail(&hdev->driver_init, skb);
1067 }
1068 }
1069
1070 if (data->isoc) {
1071 err = usb_driver_claim_interface(&btusb_driver,
1072 data->isoc, data);
1073 if (err < 0) {
1074 hci_free_dev(hdev);
1075 return err;
1076 }
1077 }
1078
1079 err = hci_register_dev(hdev);
1080 if (err < 0) {
1081 hci_free_dev(hdev);
1082 return err;
1083 }
1084
1085 usb_set_intfdata(intf, data);
1086
1087 return 0;
1088 }
1089
1090 static void btusb_disconnect(struct usb_interface *intf)
1091 {
1092 struct btusb_data *data = usb_get_intfdata(intf);
1093 struct hci_dev *hdev;
1094
1095 BT_DBG("intf %p", intf);
1096
1097 if (!data)
1098 return;
1099
1100 hdev = data->hdev;
1101 usb_set_intfdata(data->intf, NULL);
1102
1103 if (data->isoc)
1104 usb_set_intfdata(data->isoc, NULL);
1105
1106 hci_unregister_dev(hdev);
1107
1108 if (intf == data->isoc)
1109 usb_driver_release_interface(&btusb_driver, data->intf);
1110 else if (data->isoc)
1111 usb_driver_release_interface(&btusb_driver, data->isoc);
1112
1113 hci_free_dev(hdev);
1114 }
1115
1116 #ifdef CONFIG_PM
1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119 struct btusb_data *data = usb_get_intfdata(intf);
1120
1121 BT_DBG("intf %p", intf);
1122
1123 if (data->suspend_count++)
1124 return 0;
1125
1126 spin_lock_irq(&data->txlock);
1127 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1128 set_bit(BTUSB_SUSPENDING, &data->flags);
1129 spin_unlock_irq(&data->txlock);
1130 } else {
1131 spin_unlock_irq(&data->txlock);
1132 data->suspend_count--;
1133 return -EBUSY;
1134 }
1135
1136 cancel_work_sync(&data->work);
1137
1138 btusb_stop_traffic(data);
1139 usb_kill_anchored_urbs(&data->tx_anchor);
1140
1141 return 0;
1142 }
1143
1144 static void play_deferred(struct btusb_data *data)
1145 {
1146 struct urb *urb;
1147 int err;
1148
1149 while ((urb = usb_get_from_anchor(&data->deferred))) {
1150 err = usb_submit_urb(urb, GFP_ATOMIC);
1151 if (err < 0)
1152 break;
1153
1154 data->tx_in_flight++;
1155 }
1156 usb_scuttle_anchored_urbs(&data->deferred);
1157 }
1158
1159 static int btusb_resume(struct usb_interface *intf)
1160 {
1161 struct btusb_data *data = usb_get_intfdata(intf);
1162 struct hci_dev *hdev = data->hdev;
1163 int err = 0;
1164
1165 BT_DBG("intf %p", intf);
1166
1167 if (--data->suspend_count)
1168 return 0;
1169
1170 if (!test_bit(HCI_RUNNING, &hdev->flags))
1171 goto done;
1172
1173 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1174 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175 if (err < 0) {
1176 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1177 goto failed;
1178 }
1179 }
1180
1181 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1182 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183 if (err < 0) {
1184 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1185 goto failed;
1186 }
1187
1188 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189 }
1190
1191 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1192 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1193 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194 else
1195 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1196 }
1197
1198 spin_lock_irq(&data->txlock);
1199 play_deferred(data);
1200 clear_bit(BTUSB_SUSPENDING, &data->flags);
1201 spin_unlock_irq(&data->txlock);
1202 schedule_work(&data->work);
1203
1204 return 0;
1205
1206 failed:
1207 usb_scuttle_anchored_urbs(&data->deferred);
1208 done:
1209 spin_lock_irq(&data->txlock);
1210 clear_bit(BTUSB_SUSPENDING, &data->flags);
1211 spin_unlock_irq(&data->txlock);
1212
1213 return err;
1214 }
1215 #endif
1216
1217 static struct usb_driver btusb_driver = {
1218 .name = "btusb",
1219 .probe = btusb_probe,
1220 .disconnect = btusb_disconnect,
1221 #ifdef CONFIG_PM
1222 .suspend = btusb_suspend,
1223 .resume = btusb_resume,
1224 #endif
1225 .id_table = btusb_table,
1226 .supports_autosuspend = 1,
1227 .disable_hub_initiated_lpm = 1,
1228 };
1229
1230 module_usb_driver(btusb_driver);
1231
1232 module_param(ignore_dga, bool, 0644);
1233 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1234
1235 module_param(ignore_csr, bool, 0644);
1236 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1237
1238 module_param(ignore_sniffer, bool, 0644);
1239 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1240
1241 module_param(disable_scofix, bool, 0644);
1242 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1243
1244 module_param(force_scofix, bool, 0644);
1245 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1246
1247 module_param(reset, bool, 0644);
1248 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1249
1250 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1251 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1252 MODULE_VERSION(VERSION);
1253 MODULE_LICENSE("GPL");
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