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Merge branch 'pl022' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
[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(0x0489, 0xe042) },
105 { USB_DEVICE(0x0a5c, 0x21e3) },
106 { USB_DEVICE(0x0a5c, 0x21e6) },
107 { USB_DEVICE(0x0a5c, 0x21e8) },
108 { USB_DEVICE(0x0a5c, 0x21f3) },
109 { USB_DEVICE(0x413c, 0x8197) },
110
111 /* Foxconn - Hon Hai */
112 { USB_DEVICE(0x0489, 0xe033) },
113
114 { } /* Terminating entry */
115 };
116
117 MODULE_DEVICE_TABLE(usb, btusb_table);
118
119 static struct usb_device_id blacklist_table[] = {
120 /* CSR BlueCore devices */
121 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
122
123 /* Broadcom BCM2033 without firmware */
124 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
125
126 /* Atheros 3011 with sflash firmware */
127 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
128 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
129 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
130 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
131 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
132
133 /* Atheros AR9285 Malbec with sflash firmware */
134 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
135
136 /* Atheros 3012 with sflash firmware */
137 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
142 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
143 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
144
145 /* Atheros AR5BBU12 with sflash firmware */
146 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
147
148 /* Atheros AR5BBU12 with sflash firmware */
149 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
150
151 /* Broadcom BCM2035 */
152 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
153 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
155
156 /* Broadcom BCM2045 */
157 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
158 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160 /* IBM/Lenovo ThinkPad with Broadcom chip */
161 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
163
164 /* HP laptop with Broadcom chip */
165 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
166
167 /* Dell laptop with Broadcom chip */
168 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170 /* Dell Wireless 370 and 410 devices */
171 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
172 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
173
174 /* Belkin F8T012 and F8T013 devices */
175 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
176 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
177
178 /* Asus WL-BTD202 device */
179 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
180
181 /* Kensington Bluetooth USB adapter */
182 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
183
184 /* RTX Telecom based adapters with buggy SCO support */
185 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
186 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
187
188 /* CONWISE Technology based adapters with buggy SCO support */
189 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
190
191 /* Digianswer devices */
192 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
193 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
194
195 /* CSR BlueCore Bluetooth Sniffer */
196 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
197
198 /* Frontline ComProbe Bluetooth Sniffer */
199 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
200
201 { } /* Terminating entry */
202 };
203
204 #define BTUSB_MAX_ISOC_FRAMES 10
205
206 #define BTUSB_INTR_RUNNING 0
207 #define BTUSB_BULK_RUNNING 1
208 #define BTUSB_ISOC_RUNNING 2
209 #define BTUSB_SUSPENDING 3
210 #define BTUSB_DID_ISO_RESUME 4
211
212 struct btusb_data {
213 struct hci_dev *hdev;
214 struct usb_device *udev;
215 struct usb_interface *intf;
216 struct usb_interface *isoc;
217
218 spinlock_t lock;
219
220 unsigned long flags;
221
222 struct work_struct work;
223 struct work_struct waker;
224
225 struct usb_anchor tx_anchor;
226 struct usb_anchor intr_anchor;
227 struct usb_anchor bulk_anchor;
228 struct usb_anchor isoc_anchor;
229 struct usb_anchor deferred;
230 int tx_in_flight;
231 spinlock_t txlock;
232
233 struct usb_endpoint_descriptor *intr_ep;
234 struct usb_endpoint_descriptor *bulk_tx_ep;
235 struct usb_endpoint_descriptor *bulk_rx_ep;
236 struct usb_endpoint_descriptor *isoc_tx_ep;
237 struct usb_endpoint_descriptor *isoc_rx_ep;
238
239 __u8 cmdreq_type;
240
241 unsigned int sco_num;
242 int isoc_altsetting;
243 int suspend_count;
244 };
245
246 static int inc_tx(struct btusb_data *data)
247 {
248 unsigned long flags;
249 int rv;
250
251 spin_lock_irqsave(&data->txlock, flags);
252 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
253 if (!rv)
254 data->tx_in_flight++;
255 spin_unlock_irqrestore(&data->txlock, flags);
256
257 return rv;
258 }
259
260 static void btusb_intr_complete(struct urb *urb)
261 {
262 struct hci_dev *hdev = urb->context;
263 struct btusb_data *data = hci_get_drvdata(hdev);
264 int err;
265
266 BT_DBG("%s urb %p status %d count %d", hdev->name,
267 urb, urb->status, urb->actual_length);
268
269 if (!test_bit(HCI_RUNNING, &hdev->flags))
270 return;
271
272 if (urb->status == 0) {
273 hdev->stat.byte_rx += urb->actual_length;
274
275 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
276 urb->transfer_buffer,
277 urb->actual_length) < 0) {
278 BT_ERR("%s corrupted event packet", hdev->name);
279 hdev->stat.err_rx++;
280 }
281 }
282
283 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
284 return;
285
286 usb_mark_last_busy(data->udev);
287 usb_anchor_urb(urb, &data->intr_anchor);
288
289 err = usb_submit_urb(urb, GFP_ATOMIC);
290 if (err < 0) {
291 /* -EPERM: urb is being killed;
292 * -ENODEV: device got disconnected */
293 if (err != -EPERM && err != -ENODEV)
294 BT_ERR("%s urb %p failed to resubmit (%d)",
295 hdev->name, urb, -err);
296 usb_unanchor_urb(urb);
297 }
298 }
299
300 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
301 {
302 struct btusb_data *data = hci_get_drvdata(hdev);
303 struct urb *urb;
304 unsigned char *buf;
305 unsigned int pipe;
306 int err, size;
307
308 BT_DBG("%s", hdev->name);
309
310 if (!data->intr_ep)
311 return -ENODEV;
312
313 urb = usb_alloc_urb(0, mem_flags);
314 if (!urb)
315 return -ENOMEM;
316
317 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
318
319 buf = kmalloc(size, mem_flags);
320 if (!buf) {
321 usb_free_urb(urb);
322 return -ENOMEM;
323 }
324
325 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
326
327 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
328 btusb_intr_complete, hdev,
329 data->intr_ep->bInterval);
330
331 urb->transfer_flags |= URB_FREE_BUFFER;
332
333 usb_anchor_urb(urb, &data->intr_anchor);
334
335 err = usb_submit_urb(urb, mem_flags);
336 if (err < 0) {
337 if (err != -EPERM && err != -ENODEV)
338 BT_ERR("%s urb %p submission failed (%d)",
339 hdev->name, urb, -err);
340 usb_unanchor_urb(urb);
341 }
342
343 usb_free_urb(urb);
344
345 return err;
346 }
347
348 static void btusb_bulk_complete(struct urb *urb)
349 {
350 struct hci_dev *hdev = urb->context;
351 struct btusb_data *data = hci_get_drvdata(hdev);
352 int err;
353
354 BT_DBG("%s urb %p status %d count %d", hdev->name,
355 urb, urb->status, urb->actual_length);
356
357 if (!test_bit(HCI_RUNNING, &hdev->flags))
358 return;
359
360 if (urb->status == 0) {
361 hdev->stat.byte_rx += urb->actual_length;
362
363 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
364 urb->transfer_buffer,
365 urb->actual_length) < 0) {
366 BT_ERR("%s corrupted ACL packet", hdev->name);
367 hdev->stat.err_rx++;
368 }
369 }
370
371 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
372 return;
373
374 usb_anchor_urb(urb, &data->bulk_anchor);
375 usb_mark_last_busy(data->udev);
376
377 err = usb_submit_urb(urb, GFP_ATOMIC);
378 if (err < 0) {
379 /* -EPERM: urb is being killed;
380 * -ENODEV: device got disconnected */
381 if (err != -EPERM && err != -ENODEV)
382 BT_ERR("%s urb %p failed to resubmit (%d)",
383 hdev->name, urb, -err);
384 usb_unanchor_urb(urb);
385 }
386 }
387
388 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
389 {
390 struct btusb_data *data = hci_get_drvdata(hdev);
391 struct urb *urb;
392 unsigned char *buf;
393 unsigned int pipe;
394 int err, size = HCI_MAX_FRAME_SIZE;
395
396 BT_DBG("%s", hdev->name);
397
398 if (!data->bulk_rx_ep)
399 return -ENODEV;
400
401 urb = usb_alloc_urb(0, mem_flags);
402 if (!urb)
403 return -ENOMEM;
404
405 buf = kmalloc(size, mem_flags);
406 if (!buf) {
407 usb_free_urb(urb);
408 return -ENOMEM;
409 }
410
411 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
412
413 usb_fill_bulk_urb(urb, data->udev, pipe,
414 buf, size, btusb_bulk_complete, hdev);
415
416 urb->transfer_flags |= URB_FREE_BUFFER;
417
418 usb_mark_last_busy(data->udev);
419 usb_anchor_urb(urb, &data->bulk_anchor);
420
421 err = usb_submit_urb(urb, mem_flags);
422 if (err < 0) {
423 if (err != -EPERM && err != -ENODEV)
424 BT_ERR("%s urb %p submission failed (%d)",
425 hdev->name, urb, -err);
426 usb_unanchor_urb(urb);
427 }
428
429 usb_free_urb(urb);
430
431 return err;
432 }
433
434 static void btusb_isoc_complete(struct urb *urb)
435 {
436 struct hci_dev *hdev = urb->context;
437 struct btusb_data *data = hci_get_drvdata(hdev);
438 int i, err;
439
440 BT_DBG("%s urb %p status %d count %d", hdev->name,
441 urb, urb->status, urb->actual_length);
442
443 if (!test_bit(HCI_RUNNING, &hdev->flags))
444 return;
445
446 if (urb->status == 0) {
447 for (i = 0; i < urb->number_of_packets; i++) {
448 unsigned int offset = urb->iso_frame_desc[i].offset;
449 unsigned int length = urb->iso_frame_desc[i].actual_length;
450
451 if (urb->iso_frame_desc[i].status)
452 continue;
453
454 hdev->stat.byte_rx += length;
455
456 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
457 urb->transfer_buffer + offset,
458 length) < 0) {
459 BT_ERR("%s corrupted SCO packet", hdev->name);
460 hdev->stat.err_rx++;
461 }
462 }
463 }
464
465 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
466 return;
467
468 usb_anchor_urb(urb, &data->isoc_anchor);
469
470 err = usb_submit_urb(urb, GFP_ATOMIC);
471 if (err < 0) {
472 /* -EPERM: urb is being killed;
473 * -ENODEV: device got disconnected */
474 if (err != -EPERM && err != -ENODEV)
475 BT_ERR("%s urb %p failed to resubmit (%d)",
476 hdev->name, urb, -err);
477 usb_unanchor_urb(urb);
478 }
479 }
480
481 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
482 {
483 int i, offset = 0;
484
485 BT_DBG("len %d mtu %d", len, mtu);
486
487 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
488 i++, offset += mtu, len -= mtu) {
489 urb->iso_frame_desc[i].offset = offset;
490 urb->iso_frame_desc[i].length = mtu;
491 }
492
493 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
494 urb->iso_frame_desc[i].offset = offset;
495 urb->iso_frame_desc[i].length = len;
496 i++;
497 }
498
499 urb->number_of_packets = i;
500 }
501
502 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
503 {
504 struct btusb_data *data = hci_get_drvdata(hdev);
505 struct urb *urb;
506 unsigned char *buf;
507 unsigned int pipe;
508 int err, size;
509
510 BT_DBG("%s", hdev->name);
511
512 if (!data->isoc_rx_ep)
513 return -ENODEV;
514
515 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
516 if (!urb)
517 return -ENOMEM;
518
519 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
520 BTUSB_MAX_ISOC_FRAMES;
521
522 buf = kmalloc(size, mem_flags);
523 if (!buf) {
524 usb_free_urb(urb);
525 return -ENOMEM;
526 }
527
528 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
529
530 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
531 hdev, data->isoc_rx_ep->bInterval);
532
533 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
534
535 __fill_isoc_descriptor(urb, size,
536 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
537
538 usb_anchor_urb(urb, &data->isoc_anchor);
539
540 err = usb_submit_urb(urb, mem_flags);
541 if (err < 0) {
542 if (err != -EPERM && err != -ENODEV)
543 BT_ERR("%s urb %p submission failed (%d)",
544 hdev->name, urb, -err);
545 usb_unanchor_urb(urb);
546 }
547
548 usb_free_urb(urb);
549
550 return err;
551 }
552
553 static void btusb_tx_complete(struct urb *urb)
554 {
555 struct sk_buff *skb = urb->context;
556 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
557 struct btusb_data *data = hci_get_drvdata(hdev);
558
559 BT_DBG("%s urb %p status %d count %d", hdev->name,
560 urb, urb->status, urb->actual_length);
561
562 if (!test_bit(HCI_RUNNING, &hdev->flags))
563 goto done;
564
565 if (!urb->status)
566 hdev->stat.byte_tx += urb->transfer_buffer_length;
567 else
568 hdev->stat.err_tx++;
569
570 done:
571 spin_lock(&data->txlock);
572 data->tx_in_flight--;
573 spin_unlock(&data->txlock);
574
575 kfree(urb->setup_packet);
576
577 kfree_skb(skb);
578 }
579
580 static void btusb_isoc_tx_complete(struct urb *urb)
581 {
582 struct sk_buff *skb = urb->context;
583 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
584
585 BT_DBG("%s urb %p status %d count %d", hdev->name,
586 urb, urb->status, urb->actual_length);
587
588 if (!test_bit(HCI_RUNNING, &hdev->flags))
589 goto done;
590
591 if (!urb->status)
592 hdev->stat.byte_tx += urb->transfer_buffer_length;
593 else
594 hdev->stat.err_tx++;
595
596 done:
597 kfree(urb->setup_packet);
598
599 kfree_skb(skb);
600 }
601
602 static int btusb_open(struct hci_dev *hdev)
603 {
604 struct btusb_data *data = hci_get_drvdata(hdev);
605 int err;
606
607 BT_DBG("%s", hdev->name);
608
609 err = usb_autopm_get_interface(data->intf);
610 if (err < 0)
611 return err;
612
613 data->intf->needs_remote_wakeup = 1;
614
615 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
616 goto done;
617
618 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
619 goto done;
620
621 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
622 if (err < 0)
623 goto failed;
624
625 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
626 if (err < 0) {
627 usb_kill_anchored_urbs(&data->intr_anchor);
628 goto failed;
629 }
630
631 set_bit(BTUSB_BULK_RUNNING, &data->flags);
632 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
633
634 done:
635 usb_autopm_put_interface(data->intf);
636 return 0;
637
638 failed:
639 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
640 clear_bit(HCI_RUNNING, &hdev->flags);
641 usb_autopm_put_interface(data->intf);
642 return err;
643 }
644
645 static void btusb_stop_traffic(struct btusb_data *data)
646 {
647 usb_kill_anchored_urbs(&data->intr_anchor);
648 usb_kill_anchored_urbs(&data->bulk_anchor);
649 usb_kill_anchored_urbs(&data->isoc_anchor);
650 }
651
652 static int btusb_close(struct hci_dev *hdev)
653 {
654 struct btusb_data *data = hci_get_drvdata(hdev);
655 int err;
656
657 BT_DBG("%s", hdev->name);
658
659 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
660 return 0;
661
662 cancel_work_sync(&data->work);
663 cancel_work_sync(&data->waker);
664
665 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
666 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
667 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
668
669 btusb_stop_traffic(data);
670 err = usb_autopm_get_interface(data->intf);
671 if (err < 0)
672 goto failed;
673
674 data->intf->needs_remote_wakeup = 0;
675 usb_autopm_put_interface(data->intf);
676
677 failed:
678 usb_scuttle_anchored_urbs(&data->deferred);
679 return 0;
680 }
681
682 static int btusb_flush(struct hci_dev *hdev)
683 {
684 struct btusb_data *data = hci_get_drvdata(hdev);
685
686 BT_DBG("%s", hdev->name);
687
688 usb_kill_anchored_urbs(&data->tx_anchor);
689
690 return 0;
691 }
692
693 static int btusb_send_frame(struct sk_buff *skb)
694 {
695 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
696 struct btusb_data *data = hci_get_drvdata(hdev);
697 struct usb_ctrlrequest *dr;
698 struct urb *urb;
699 unsigned int pipe;
700 int err;
701
702 BT_DBG("%s", hdev->name);
703
704 if (!test_bit(HCI_RUNNING, &hdev->flags))
705 return -EBUSY;
706
707 switch (bt_cb(skb)->pkt_type) {
708 case HCI_COMMAND_PKT:
709 urb = usb_alloc_urb(0, GFP_ATOMIC);
710 if (!urb)
711 return -ENOMEM;
712
713 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
714 if (!dr) {
715 usb_free_urb(urb);
716 return -ENOMEM;
717 }
718
719 dr->bRequestType = data->cmdreq_type;
720 dr->bRequest = 0;
721 dr->wIndex = 0;
722 dr->wValue = 0;
723 dr->wLength = __cpu_to_le16(skb->len);
724
725 pipe = usb_sndctrlpipe(data->udev, 0x00);
726
727 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
728 skb->data, skb->len, btusb_tx_complete, skb);
729
730 hdev->stat.cmd_tx++;
731 break;
732
733 case HCI_ACLDATA_PKT:
734 if (!data->bulk_tx_ep)
735 return -ENODEV;
736
737 urb = usb_alloc_urb(0, GFP_ATOMIC);
738 if (!urb)
739 return -ENOMEM;
740
741 pipe = usb_sndbulkpipe(data->udev,
742 data->bulk_tx_ep->bEndpointAddress);
743
744 usb_fill_bulk_urb(urb, data->udev, pipe,
745 skb->data, skb->len, btusb_tx_complete, skb);
746
747 hdev->stat.acl_tx++;
748 break;
749
750 case HCI_SCODATA_PKT:
751 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
752 return -ENODEV;
753
754 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
755 if (!urb)
756 return -ENOMEM;
757
758 pipe = usb_sndisocpipe(data->udev,
759 data->isoc_tx_ep->bEndpointAddress);
760
761 usb_fill_int_urb(urb, data->udev, pipe,
762 skb->data, skb->len, btusb_isoc_tx_complete,
763 skb, data->isoc_tx_ep->bInterval);
764
765 urb->transfer_flags = URB_ISO_ASAP;
766
767 __fill_isoc_descriptor(urb, skb->len,
768 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
769
770 hdev->stat.sco_tx++;
771 goto skip_waking;
772
773 default:
774 return -EILSEQ;
775 }
776
777 err = inc_tx(data);
778 if (err) {
779 usb_anchor_urb(urb, &data->deferred);
780 schedule_work(&data->waker);
781 err = 0;
782 goto done;
783 }
784
785 skip_waking:
786 usb_anchor_urb(urb, &data->tx_anchor);
787
788 err = usb_submit_urb(urb, GFP_ATOMIC);
789 if (err < 0) {
790 if (err != -EPERM && err != -ENODEV)
791 BT_ERR("%s urb %p submission failed (%d)",
792 hdev->name, urb, -err);
793 kfree(urb->setup_packet);
794 usb_unanchor_urb(urb);
795 } else {
796 usb_mark_last_busy(data->udev);
797 }
798
799 done:
800 usb_free_urb(urb);
801 return err;
802 }
803
804 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
805 {
806 struct btusb_data *data = hci_get_drvdata(hdev);
807
808 BT_DBG("%s evt %d", hdev->name, evt);
809
810 if (hdev->conn_hash.sco_num != data->sco_num) {
811 data->sco_num = hdev->conn_hash.sco_num;
812 schedule_work(&data->work);
813 }
814 }
815
816 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
817 {
818 struct btusb_data *data = hci_get_drvdata(hdev);
819 struct usb_interface *intf = data->isoc;
820 struct usb_endpoint_descriptor *ep_desc;
821 int i, err;
822
823 if (!data->isoc)
824 return -ENODEV;
825
826 err = usb_set_interface(data->udev, 1, altsetting);
827 if (err < 0) {
828 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
829 return err;
830 }
831
832 data->isoc_altsetting = altsetting;
833
834 data->isoc_tx_ep = NULL;
835 data->isoc_rx_ep = NULL;
836
837 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
838 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
839
840 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
841 data->isoc_tx_ep = ep_desc;
842 continue;
843 }
844
845 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
846 data->isoc_rx_ep = ep_desc;
847 continue;
848 }
849 }
850
851 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
852 BT_ERR("%s invalid SCO descriptors", hdev->name);
853 return -ENODEV;
854 }
855
856 return 0;
857 }
858
859 static void btusb_work(struct work_struct *work)
860 {
861 struct btusb_data *data = container_of(work, struct btusb_data, work);
862 struct hci_dev *hdev = data->hdev;
863 int new_alts;
864 int err;
865
866 if (hdev->conn_hash.sco_num > 0) {
867 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
868 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
869 if (err < 0) {
870 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
871 usb_kill_anchored_urbs(&data->isoc_anchor);
872 return;
873 }
874
875 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
876 }
877
878 if (hdev->voice_setting & 0x0020) {
879 static const int alts[3] = { 2, 4, 5 };
880 new_alts = alts[hdev->conn_hash.sco_num - 1];
881 } else {
882 new_alts = hdev->conn_hash.sco_num;
883 }
884
885 if (data->isoc_altsetting != new_alts) {
886 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
887 usb_kill_anchored_urbs(&data->isoc_anchor);
888
889 if (__set_isoc_interface(hdev, new_alts) < 0)
890 return;
891 }
892
893 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
894 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
895 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
896 else
897 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
898 }
899 } else {
900 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
901 usb_kill_anchored_urbs(&data->isoc_anchor);
902
903 __set_isoc_interface(hdev, 0);
904 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
905 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
906 }
907 }
908
909 static void btusb_waker(struct work_struct *work)
910 {
911 struct btusb_data *data = container_of(work, struct btusb_data, waker);
912 int err;
913
914 err = usb_autopm_get_interface(data->intf);
915 if (err < 0)
916 return;
917
918 usb_autopm_put_interface(data->intf);
919 }
920
921 static int btusb_probe(struct usb_interface *intf,
922 const struct usb_device_id *id)
923 {
924 struct usb_endpoint_descriptor *ep_desc;
925 struct btusb_data *data;
926 struct hci_dev *hdev;
927 int i, err;
928
929 BT_DBG("intf %p id %p", intf, id);
930
931 /* interface numbers are hardcoded in the spec */
932 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
933 return -ENODEV;
934
935 if (!id->driver_info) {
936 const struct usb_device_id *match;
937 match = usb_match_id(intf, blacklist_table);
938 if (match)
939 id = match;
940 }
941
942 if (id->driver_info == BTUSB_IGNORE)
943 return -ENODEV;
944
945 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
946 return -ENODEV;
947
948 if (ignore_csr && id->driver_info & BTUSB_CSR)
949 return -ENODEV;
950
951 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
952 return -ENODEV;
953
954 if (id->driver_info & BTUSB_ATH3012) {
955 struct usb_device *udev = interface_to_usbdev(intf);
956
957 /* Old firmware would otherwise let ath3k driver load
958 * patch and sysconfig files */
959 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
960 return -ENODEV;
961 }
962
963 data = kzalloc(sizeof(*data), GFP_KERNEL);
964 if (!data)
965 return -ENOMEM;
966
967 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
968 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
969
970 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
971 data->intr_ep = ep_desc;
972 continue;
973 }
974
975 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
976 data->bulk_tx_ep = ep_desc;
977 continue;
978 }
979
980 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
981 data->bulk_rx_ep = ep_desc;
982 continue;
983 }
984 }
985
986 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
987 kfree(data);
988 return -ENODEV;
989 }
990
991 data->cmdreq_type = USB_TYPE_CLASS;
992
993 data->udev = interface_to_usbdev(intf);
994 data->intf = intf;
995
996 spin_lock_init(&data->lock);
997
998 INIT_WORK(&data->work, btusb_work);
999 INIT_WORK(&data->waker, btusb_waker);
1000 spin_lock_init(&data->txlock);
1001
1002 init_usb_anchor(&data->tx_anchor);
1003 init_usb_anchor(&data->intr_anchor);
1004 init_usb_anchor(&data->bulk_anchor);
1005 init_usb_anchor(&data->isoc_anchor);
1006 init_usb_anchor(&data->deferred);
1007
1008 hdev = hci_alloc_dev();
1009 if (!hdev) {
1010 kfree(data);
1011 return -ENOMEM;
1012 }
1013
1014 hdev->bus = HCI_USB;
1015 hci_set_drvdata(hdev, data);
1016
1017 data->hdev = hdev;
1018
1019 SET_HCIDEV_DEV(hdev, &intf->dev);
1020
1021 hdev->open = btusb_open;
1022 hdev->close = btusb_close;
1023 hdev->flush = btusb_flush;
1024 hdev->send = btusb_send_frame;
1025 hdev->notify = btusb_notify;
1026
1027 /* Interface numbers are hardcoded in the specification */
1028 data->isoc = usb_ifnum_to_if(data->udev, 1);
1029
1030 if (!reset)
1031 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032
1033 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1034 if (!disable_scofix)
1035 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1036 }
1037
1038 if (id->driver_info & BTUSB_BROKEN_ISOC)
1039 data->isoc = NULL;
1040
1041 if (id->driver_info & BTUSB_DIGIANSWER) {
1042 data->cmdreq_type = USB_TYPE_VENDOR;
1043 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1044 }
1045
1046 if (id->driver_info & BTUSB_CSR) {
1047 struct usb_device *udev = data->udev;
1048
1049 /* Old firmware would otherwise execute USB reset */
1050 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1051 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1052 }
1053
1054 if (id->driver_info & BTUSB_SNIFFER) {
1055 struct usb_device *udev = data->udev;
1056
1057 /* New sniffer firmware has crippled HCI interface */
1058 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1059 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1060
1061 data->isoc = NULL;
1062 }
1063
1064 if (id->driver_info & BTUSB_BCM92035) {
1065 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1066 struct sk_buff *skb;
1067
1068 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1069 if (skb) {
1070 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1071 skb_queue_tail(&hdev->driver_init, skb);
1072 }
1073 }
1074
1075 if (data->isoc) {
1076 err = usb_driver_claim_interface(&btusb_driver,
1077 data->isoc, data);
1078 if (err < 0) {
1079 hci_free_dev(hdev);
1080 kfree(data);
1081 return err;
1082 }
1083 }
1084
1085 err = hci_register_dev(hdev);
1086 if (err < 0) {
1087 hci_free_dev(hdev);
1088 kfree(data);
1089 return err;
1090 }
1091
1092 usb_set_intfdata(intf, data);
1093
1094 return 0;
1095 }
1096
1097 static void btusb_disconnect(struct usb_interface *intf)
1098 {
1099 struct btusb_data *data = usb_get_intfdata(intf);
1100 struct hci_dev *hdev;
1101
1102 BT_DBG("intf %p", intf);
1103
1104 if (!data)
1105 return;
1106
1107 hdev = data->hdev;
1108 usb_set_intfdata(data->intf, NULL);
1109
1110 if (data->isoc)
1111 usb_set_intfdata(data->isoc, NULL);
1112
1113 hci_unregister_dev(hdev);
1114
1115 if (intf == data->isoc)
1116 usb_driver_release_interface(&btusb_driver, data->intf);
1117 else if (data->isoc)
1118 usb_driver_release_interface(&btusb_driver, data->isoc);
1119
1120 hci_free_dev(hdev);
1121 kfree(data);
1122 }
1123
1124 #ifdef CONFIG_PM
1125 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1126 {
1127 struct btusb_data *data = usb_get_intfdata(intf);
1128
1129 BT_DBG("intf %p", intf);
1130
1131 if (data->suspend_count++)
1132 return 0;
1133
1134 spin_lock_irq(&data->txlock);
1135 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1136 set_bit(BTUSB_SUSPENDING, &data->flags);
1137 spin_unlock_irq(&data->txlock);
1138 } else {
1139 spin_unlock_irq(&data->txlock);
1140 data->suspend_count--;
1141 return -EBUSY;
1142 }
1143
1144 cancel_work_sync(&data->work);
1145
1146 btusb_stop_traffic(data);
1147 usb_kill_anchored_urbs(&data->tx_anchor);
1148
1149 return 0;
1150 }
1151
1152 static void play_deferred(struct btusb_data *data)
1153 {
1154 struct urb *urb;
1155 int err;
1156
1157 while ((urb = usb_get_from_anchor(&data->deferred))) {
1158 err = usb_submit_urb(urb, GFP_ATOMIC);
1159 if (err < 0)
1160 break;
1161
1162 data->tx_in_flight++;
1163 }
1164 usb_scuttle_anchored_urbs(&data->deferred);
1165 }
1166
1167 static int btusb_resume(struct usb_interface *intf)
1168 {
1169 struct btusb_data *data = usb_get_intfdata(intf);
1170 struct hci_dev *hdev = data->hdev;
1171 int err = 0;
1172
1173 BT_DBG("intf %p", intf);
1174
1175 if (--data->suspend_count)
1176 return 0;
1177
1178 if (!test_bit(HCI_RUNNING, &hdev->flags))
1179 goto done;
1180
1181 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1182 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1183 if (err < 0) {
1184 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1185 goto failed;
1186 }
1187 }
1188
1189 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1190 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1191 if (err < 0) {
1192 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1193 goto failed;
1194 }
1195
1196 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1197 }
1198
1199 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1200 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1201 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1202 else
1203 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1204 }
1205
1206 spin_lock_irq(&data->txlock);
1207 play_deferred(data);
1208 clear_bit(BTUSB_SUSPENDING, &data->flags);
1209 spin_unlock_irq(&data->txlock);
1210 schedule_work(&data->work);
1211
1212 return 0;
1213
1214 failed:
1215 usb_scuttle_anchored_urbs(&data->deferred);
1216 done:
1217 spin_lock_irq(&data->txlock);
1218 clear_bit(BTUSB_SUSPENDING, &data->flags);
1219 spin_unlock_irq(&data->txlock);
1220
1221 return err;
1222 }
1223 #endif
1224
1225 static struct usb_driver btusb_driver = {
1226 .name = "btusb",
1227 .probe = btusb_probe,
1228 .disconnect = btusb_disconnect,
1229 #ifdef CONFIG_PM
1230 .suspend = btusb_suspend,
1231 .resume = btusb_resume,
1232 #endif
1233 .id_table = btusb_table,
1234 .supports_autosuspend = 1,
1235 .disable_hub_initiated_lpm = 1,
1236 };
1237
1238 module_usb_driver(btusb_driver);
1239
1240 module_param(ignore_dga, bool, 0644);
1241 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1242
1243 module_param(ignore_csr, bool, 0644);
1244 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1245
1246 module_param(ignore_sniffer, bool, 0644);
1247 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1248
1249 module_param(disable_scofix, bool, 0644);
1250 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1251
1252 module_param(force_scofix, bool, 0644);
1253 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1254
1255 module_param(reset, bool, 0644);
1256 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1257
1258 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1259 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1260 MODULE_VERSION(VERSION);
1261 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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