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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
[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 int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE 0x01
51 #define BTUSB_DIGIANSWER 0x02
52 #define BTUSB_CSR 0x04
53 #define BTUSB_SNIFFER 0x08
54 #define BTUSB_BCM92035 0x10
55 #define BTUSB_BROKEN_ISOC 0x20
56 #define BTUSB_WRONG_SCO_MTU 0x40
57
58 static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62 /* AVM BlueFRITZ! USB v2.0 */
63 { USB_DEVICE(0x057c, 0x3800) },
64
65 /* Bluetooth Ultraport Module from IBM */
66 { USB_DEVICE(0x04bf, 0x030a) },
67
68 /* ALPS Modules with non-standard id */
69 { USB_DEVICE(0x044e, 0x3001) },
70 { USB_DEVICE(0x044e, 0x3002) },
71
72 /* Ericsson with non-standard id */
73 { USB_DEVICE(0x0bdb, 0x1002) },
74
75 /* Canyon CN-BTU1 with HID interfaces */
76 { USB_DEVICE(0x0c10, 0x0000) },
77
78 { } /* Terminating entry */
79 };
80
81 MODULE_DEVICE_TABLE(usb, btusb_table);
82
83 static struct usb_device_id blacklist_table[] = {
84 /* CSR BlueCore devices */
85 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
86
87 /* Broadcom BCM2033 without firmware */
88 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
89
90 /* Broadcom BCM2035 */
91 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
92 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
93 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
94
95 /* Broadcom BCM2045 */
96 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
97 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
98
99 /* IBM/Lenovo ThinkPad with Broadcom chip */
100 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
101 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
102
103 /* HP laptop with Broadcom chip */
104 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106 /* Dell laptop with Broadcom chip */
107 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109 /* Dell Wireless 370 and 410 devices */
110 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
111 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
112
113 /* Belkin F8T012 and F8T013 devices */
114 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
115 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
116
117 /* Asus WL-BTD202 device */
118 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120 /* Kensington Bluetooth USB adapter */
121 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123 /* RTX Telecom based adapters with buggy SCO support */
124 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
125 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
126
127 /* CONWISE Technology based adapters with buggy SCO support */
128 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
129
130 /* Digianswer devices */
131 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
132 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
133
134 /* CSR BlueCore Bluetooth Sniffer */
135 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
136
137 /* Frontline ComProbe Bluetooth Sniffer */
138 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140 { } /* Terminating entry */
141 };
142
143 #define BTUSB_MAX_ISOC_FRAMES 10
144
145 #define BTUSB_INTR_RUNNING 0
146 #define BTUSB_BULK_RUNNING 1
147 #define BTUSB_ISOC_RUNNING 2
148 #define BTUSB_SUSPENDING 3
149
150 struct btusb_data {
151 struct hci_dev *hdev;
152 struct usb_device *udev;
153 struct usb_interface *intf;
154 struct usb_interface *isoc;
155
156 spinlock_t lock;
157
158 unsigned long flags;
159
160 struct work_struct work;
161 struct work_struct waker;
162
163 struct usb_anchor tx_anchor;
164 struct usb_anchor intr_anchor;
165 struct usb_anchor bulk_anchor;
166 struct usb_anchor isoc_anchor;
167 struct usb_anchor deferred;
168 int tx_in_flight;
169 spinlock_t txlock;
170
171 struct usb_endpoint_descriptor *intr_ep;
172 struct usb_endpoint_descriptor *bulk_tx_ep;
173 struct usb_endpoint_descriptor *bulk_rx_ep;
174 struct usb_endpoint_descriptor *isoc_tx_ep;
175 struct usb_endpoint_descriptor *isoc_rx_ep;
176
177 __u8 cmdreq_type;
178
179 unsigned int sco_num;
180 int isoc_altsetting;
181 int suspend_count;
182 int did_iso_resume:1;
183 };
184
185 static int inc_tx(struct btusb_data *data)
186 {
187 unsigned long flags;
188 int rv;
189
190 spin_lock_irqsave(&data->txlock, flags);
191 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
192 if (!rv)
193 data->tx_in_flight++;
194 spin_unlock_irqrestore(&data->txlock, flags);
195
196 return rv;
197 }
198
199 static void btusb_intr_complete(struct urb *urb)
200 {
201 struct hci_dev *hdev = urb->context;
202 struct btusb_data *data = hdev->driver_data;
203 int err;
204
205 BT_DBG("%s urb %p status %d count %d", hdev->name,
206 urb, urb->status, urb->actual_length);
207
208 if (!test_bit(HCI_RUNNING, &hdev->flags))
209 return;
210
211 if (urb->status == 0) {
212 hdev->stat.byte_rx += urb->actual_length;
213
214 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
215 urb->transfer_buffer,
216 urb->actual_length) < 0) {
217 BT_ERR("%s corrupted event packet", hdev->name);
218 hdev->stat.err_rx++;
219 }
220 }
221
222 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
223 return;
224
225 usb_mark_last_busy(data->udev);
226 usb_anchor_urb(urb, &data->intr_anchor);
227
228 err = usb_submit_urb(urb, GFP_ATOMIC);
229 if (err < 0) {
230 BT_ERR("%s urb %p failed to resubmit (%d)",
231 hdev->name, urb, -err);
232 usb_unanchor_urb(urb);
233 }
234 }
235
236 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
237 {
238 struct btusb_data *data = hdev->driver_data;
239 struct urb *urb;
240 unsigned char *buf;
241 unsigned int pipe;
242 int err, size;
243
244 BT_DBG("%s", hdev->name);
245
246 if (!data->intr_ep)
247 return -ENODEV;
248
249 urb = usb_alloc_urb(0, mem_flags);
250 if (!urb)
251 return -ENOMEM;
252
253 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
254
255 buf = kmalloc(size, mem_flags);
256 if (!buf) {
257 usb_free_urb(urb);
258 return -ENOMEM;
259 }
260
261 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
262
263 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
264 btusb_intr_complete, hdev,
265 data->intr_ep->bInterval);
266
267 urb->transfer_flags |= URB_FREE_BUFFER;
268
269 usb_anchor_urb(urb, &data->intr_anchor);
270
271 err = usb_submit_urb(urb, mem_flags);
272 if (err < 0) {
273 BT_ERR("%s urb %p submission failed (%d)",
274 hdev->name, urb, -err);
275 usb_unanchor_urb(urb);
276 }
277
278 usb_free_urb(urb);
279
280 return err;
281 }
282
283 static void btusb_bulk_complete(struct urb *urb)
284 {
285 struct hci_dev *hdev = urb->context;
286 struct btusb_data *data = hdev->driver_data;
287 int err;
288
289 BT_DBG("%s urb %p status %d count %d", hdev->name,
290 urb, urb->status, urb->actual_length);
291
292 if (!test_bit(HCI_RUNNING, &hdev->flags))
293 return;
294
295 if (urb->status == 0) {
296 hdev->stat.byte_rx += urb->actual_length;
297
298 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
299 urb->transfer_buffer,
300 urb->actual_length) < 0) {
301 BT_ERR("%s corrupted ACL packet", hdev->name);
302 hdev->stat.err_rx++;
303 }
304 }
305
306 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
307 return;
308
309 usb_anchor_urb(urb, &data->bulk_anchor);
310 usb_mark_last_busy(data->udev);
311
312 err = usb_submit_urb(urb, GFP_ATOMIC);
313 if (err < 0) {
314 BT_ERR("%s urb %p failed to resubmit (%d)",
315 hdev->name, urb, -err);
316 usb_unanchor_urb(urb);
317 }
318 }
319
320 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
321 {
322 struct btusb_data *data = hdev->driver_data;
323 struct urb *urb;
324 unsigned char *buf;
325 unsigned int pipe;
326 int err, size = HCI_MAX_FRAME_SIZE;
327
328 BT_DBG("%s", hdev->name);
329
330 if (!data->bulk_rx_ep)
331 return -ENODEV;
332
333 urb = usb_alloc_urb(0, mem_flags);
334 if (!urb)
335 return -ENOMEM;
336
337 buf = kmalloc(size, mem_flags);
338 if (!buf) {
339 usb_free_urb(urb);
340 return -ENOMEM;
341 }
342
343 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
344
345 usb_fill_bulk_urb(urb, data->udev, pipe,
346 buf, size, btusb_bulk_complete, hdev);
347
348 urb->transfer_flags |= URB_FREE_BUFFER;
349
350 usb_mark_last_busy(data->udev);
351 usb_anchor_urb(urb, &data->bulk_anchor);
352
353 err = usb_submit_urb(urb, mem_flags);
354 if (err < 0) {
355 BT_ERR("%s urb %p submission failed (%d)",
356 hdev->name, urb, -err);
357 usb_unanchor_urb(urb);
358 }
359
360 usb_free_urb(urb);
361
362 return err;
363 }
364
365 static void btusb_isoc_complete(struct urb *urb)
366 {
367 struct hci_dev *hdev = urb->context;
368 struct btusb_data *data = hdev->driver_data;
369 int i, err;
370
371 BT_DBG("%s urb %p status %d count %d", hdev->name,
372 urb, urb->status, urb->actual_length);
373
374 if (!test_bit(HCI_RUNNING, &hdev->flags))
375 return;
376
377 if (urb->status == 0) {
378 for (i = 0; i < urb->number_of_packets; i++) {
379 unsigned int offset = urb->iso_frame_desc[i].offset;
380 unsigned int length = urb->iso_frame_desc[i].actual_length;
381
382 if (urb->iso_frame_desc[i].status)
383 continue;
384
385 hdev->stat.byte_rx += length;
386
387 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
388 urb->transfer_buffer + offset,
389 length) < 0) {
390 BT_ERR("%s corrupted SCO packet", hdev->name);
391 hdev->stat.err_rx++;
392 }
393 }
394 }
395
396 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
397 return;
398
399 usb_anchor_urb(urb, &data->isoc_anchor);
400
401 err = usb_submit_urb(urb, GFP_ATOMIC);
402 if (err < 0) {
403 BT_ERR("%s urb %p failed to resubmit (%d)",
404 hdev->name, urb, -err);
405 usb_unanchor_urb(urb);
406 }
407 }
408
409 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
410 {
411 int i, offset = 0;
412
413 BT_DBG("len %d mtu %d", len, mtu);
414
415 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
416 i++, offset += mtu, len -= mtu) {
417 urb->iso_frame_desc[i].offset = offset;
418 urb->iso_frame_desc[i].length = mtu;
419 }
420
421 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
422 urb->iso_frame_desc[i].offset = offset;
423 urb->iso_frame_desc[i].length = len;
424 i++;
425 }
426
427 urb->number_of_packets = i;
428 }
429
430 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
431 {
432 struct btusb_data *data = hdev->driver_data;
433 struct urb *urb;
434 unsigned char *buf;
435 unsigned int pipe;
436 int err, size;
437
438 BT_DBG("%s", hdev->name);
439
440 if (!data->isoc_rx_ep)
441 return -ENODEV;
442
443 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
444 if (!urb)
445 return -ENOMEM;
446
447 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
448 BTUSB_MAX_ISOC_FRAMES;
449
450 buf = kmalloc(size, mem_flags);
451 if (!buf) {
452 usb_free_urb(urb);
453 return -ENOMEM;
454 }
455
456 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
457
458 urb->dev = data->udev;
459 urb->pipe = pipe;
460 urb->context = hdev;
461 urb->complete = btusb_isoc_complete;
462 urb->interval = data->isoc_rx_ep->bInterval;
463
464 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
465 urb->transfer_buffer = buf;
466 urb->transfer_buffer_length = size;
467
468 __fill_isoc_descriptor(urb, size,
469 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
470
471 usb_anchor_urb(urb, &data->isoc_anchor);
472
473 err = usb_submit_urb(urb, mem_flags);
474 if (err < 0) {
475 BT_ERR("%s urb %p submission failed (%d)",
476 hdev->name, urb, -err);
477 usb_unanchor_urb(urb);
478 }
479
480 usb_free_urb(urb);
481
482 return err;
483 }
484
485 static void btusb_tx_complete(struct urb *urb)
486 {
487 struct sk_buff *skb = urb->context;
488 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
489 struct btusb_data *data = hdev->driver_data;
490
491 BT_DBG("%s urb %p status %d count %d", hdev->name,
492 urb, urb->status, urb->actual_length);
493
494 if (!test_bit(HCI_RUNNING, &hdev->flags))
495 goto done;
496
497 if (!urb->status)
498 hdev->stat.byte_tx += urb->transfer_buffer_length;
499 else
500 hdev->stat.err_tx++;
501
502 done:
503 spin_lock(&data->txlock);
504 data->tx_in_flight--;
505 spin_unlock(&data->txlock);
506
507 kfree(urb->setup_packet);
508
509 kfree_skb(skb);
510 }
511
512 static void btusb_isoc_tx_complete(struct urb *urb)
513 {
514 struct sk_buff *skb = urb->context;
515 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
516
517 BT_DBG("%s urb %p status %d count %d", hdev->name,
518 urb, urb->status, urb->actual_length);
519
520 if (!test_bit(HCI_RUNNING, &hdev->flags))
521 goto done;
522
523 if (!urb->status)
524 hdev->stat.byte_tx += urb->transfer_buffer_length;
525 else
526 hdev->stat.err_tx++;
527
528 done:
529 kfree(urb->setup_packet);
530
531 kfree_skb(skb);
532 }
533
534 static int btusb_open(struct hci_dev *hdev)
535 {
536 struct btusb_data *data = hdev->driver_data;
537 int err;
538
539 BT_DBG("%s", hdev->name);
540
541 err = usb_autopm_get_interface(data->intf);
542 if (err < 0)
543 return err;
544
545 data->intf->needs_remote_wakeup = 1;
546
547 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
548 goto done;
549
550 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
551 goto done;
552
553 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
554 if (err < 0)
555 goto failed;
556
557 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
558 if (err < 0) {
559 usb_kill_anchored_urbs(&data->intr_anchor);
560 goto failed;
561 }
562
563 set_bit(BTUSB_BULK_RUNNING, &data->flags);
564 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
565
566 done:
567 usb_autopm_put_interface(data->intf);
568 return 0;
569
570 failed:
571 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
572 clear_bit(HCI_RUNNING, &hdev->flags);
573 usb_autopm_put_interface(data->intf);
574 return err;
575 }
576
577 static void btusb_stop_traffic(struct btusb_data *data)
578 {
579 usb_kill_anchored_urbs(&data->intr_anchor);
580 usb_kill_anchored_urbs(&data->bulk_anchor);
581 usb_kill_anchored_urbs(&data->isoc_anchor);
582 }
583
584 static int btusb_close(struct hci_dev *hdev)
585 {
586 struct btusb_data *data = hdev->driver_data;
587 int err;
588
589 BT_DBG("%s", hdev->name);
590
591 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
592 return 0;
593
594 cancel_work_sync(&data->work);
595 cancel_work_sync(&data->waker);
596
597 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
598 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
599 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
600
601 btusb_stop_traffic(data);
602 err = usb_autopm_get_interface(data->intf);
603 if (err < 0)
604 goto failed;
605
606 data->intf->needs_remote_wakeup = 0;
607 usb_autopm_put_interface(data->intf);
608
609 failed:
610 usb_scuttle_anchored_urbs(&data->deferred);
611 return 0;
612 }
613
614 static int btusb_flush(struct hci_dev *hdev)
615 {
616 struct btusb_data *data = hdev->driver_data;
617
618 BT_DBG("%s", hdev->name);
619
620 usb_kill_anchored_urbs(&data->tx_anchor);
621
622 return 0;
623 }
624
625 static int btusb_send_frame(struct sk_buff *skb)
626 {
627 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
628 struct btusb_data *data = hdev->driver_data;
629 struct usb_ctrlrequest *dr;
630 struct urb *urb;
631 unsigned int pipe;
632 int err;
633
634 BT_DBG("%s", hdev->name);
635
636 if (!test_bit(HCI_RUNNING, &hdev->flags))
637 return -EBUSY;
638
639 switch (bt_cb(skb)->pkt_type) {
640 case HCI_COMMAND_PKT:
641 urb = usb_alloc_urb(0, GFP_ATOMIC);
642 if (!urb)
643 return -ENOMEM;
644
645 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
646 if (!dr) {
647 usb_free_urb(urb);
648 return -ENOMEM;
649 }
650
651 dr->bRequestType = data->cmdreq_type;
652 dr->bRequest = 0;
653 dr->wIndex = 0;
654 dr->wValue = 0;
655 dr->wLength = __cpu_to_le16(skb->len);
656
657 pipe = usb_sndctrlpipe(data->udev, 0x00);
658
659 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
660 skb->data, skb->len, btusb_tx_complete, skb);
661
662 hdev->stat.cmd_tx++;
663 break;
664
665 case HCI_ACLDATA_PKT:
666 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
667 return -ENODEV;
668
669 urb = usb_alloc_urb(0, GFP_ATOMIC);
670 if (!urb)
671 return -ENOMEM;
672
673 pipe = usb_sndbulkpipe(data->udev,
674 data->bulk_tx_ep->bEndpointAddress);
675
676 usb_fill_bulk_urb(urb, data->udev, pipe,
677 skb->data, skb->len, btusb_tx_complete, skb);
678
679 hdev->stat.acl_tx++;
680 break;
681
682 case HCI_SCODATA_PKT:
683 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
684 return -ENODEV;
685
686 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
687 if (!urb)
688 return -ENOMEM;
689
690 pipe = usb_sndisocpipe(data->udev,
691 data->isoc_tx_ep->bEndpointAddress);
692
693 urb->dev = data->udev;
694 urb->pipe = pipe;
695 urb->context = skb;
696 urb->complete = btusb_isoc_tx_complete;
697 urb->interval = data->isoc_tx_ep->bInterval;
698
699 urb->transfer_flags = URB_ISO_ASAP;
700 urb->transfer_buffer = skb->data;
701 urb->transfer_buffer_length = skb->len;
702
703 __fill_isoc_descriptor(urb, skb->len,
704 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
705
706 hdev->stat.sco_tx++;
707 goto skip_waking;
708
709 default:
710 return -EILSEQ;
711 }
712
713 err = inc_tx(data);
714 if (err) {
715 usb_anchor_urb(urb, &data->deferred);
716 schedule_work(&data->waker);
717 err = 0;
718 goto done;
719 }
720
721 skip_waking:
722 usb_anchor_urb(urb, &data->tx_anchor);
723
724 err = usb_submit_urb(urb, GFP_ATOMIC);
725 if (err < 0) {
726 BT_ERR("%s urb %p submission failed", hdev->name, urb);
727 kfree(urb->setup_packet);
728 usb_unanchor_urb(urb);
729 } else {
730 usb_mark_last_busy(data->udev);
731 }
732
733 usb_free_urb(urb);
734
735 done:
736 return err;
737 }
738
739 static void btusb_destruct(struct hci_dev *hdev)
740 {
741 struct btusb_data *data = hdev->driver_data;
742
743 BT_DBG("%s", hdev->name);
744
745 kfree(data);
746 }
747
748 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
749 {
750 struct btusb_data *data = hdev->driver_data;
751
752 BT_DBG("%s evt %d", hdev->name, evt);
753
754 if (hdev->conn_hash.sco_num != data->sco_num) {
755 data->sco_num = hdev->conn_hash.sco_num;
756 schedule_work(&data->work);
757 }
758 }
759
760 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
761 {
762 struct btusb_data *data = hdev->driver_data;
763 struct usb_interface *intf = data->isoc;
764 struct usb_endpoint_descriptor *ep_desc;
765 int i, err;
766
767 if (!data->isoc)
768 return -ENODEV;
769
770 err = usb_set_interface(data->udev, 1, altsetting);
771 if (err < 0) {
772 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
773 return err;
774 }
775
776 data->isoc_altsetting = altsetting;
777
778 data->isoc_tx_ep = NULL;
779 data->isoc_rx_ep = NULL;
780
781 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
782 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
783
784 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
785 data->isoc_tx_ep = ep_desc;
786 continue;
787 }
788
789 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
790 data->isoc_rx_ep = ep_desc;
791 continue;
792 }
793 }
794
795 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
796 BT_ERR("%s invalid SCO descriptors", hdev->name);
797 return -ENODEV;
798 }
799
800 return 0;
801 }
802
803 static void btusb_work(struct work_struct *work)
804 {
805 struct btusb_data *data = container_of(work, struct btusb_data, work);
806 struct hci_dev *hdev = data->hdev;
807 int err;
808
809 if (hdev->conn_hash.sco_num > 0) {
810 if (!data->did_iso_resume) {
811 err = usb_autopm_get_interface(data->isoc);
812 if (err < 0) {
813 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
814 usb_kill_anchored_urbs(&data->isoc_anchor);
815 return;
816 }
817
818 data->did_iso_resume = 1;
819 }
820 if (data->isoc_altsetting != 2) {
821 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
822 usb_kill_anchored_urbs(&data->isoc_anchor);
823
824 if (__set_isoc_interface(hdev, 2) < 0)
825 return;
826 }
827
828 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
829 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
830 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
831 else
832 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
833 }
834 } else {
835 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
836 usb_kill_anchored_urbs(&data->isoc_anchor);
837
838 __set_isoc_interface(hdev, 0);
839 if (data->did_iso_resume) {
840 data->did_iso_resume = 0;
841 usb_autopm_put_interface(data->isoc);
842 }
843 }
844 }
845
846 static void btusb_waker(struct work_struct *work)
847 {
848 struct btusb_data *data = container_of(work, struct btusb_data, waker);
849 int err;
850
851 err = usb_autopm_get_interface(data->intf);
852 if (err < 0)
853 return;
854
855 usb_autopm_put_interface(data->intf);
856 }
857
858 static int btusb_probe(struct usb_interface *intf,
859 const struct usb_device_id *id)
860 {
861 struct usb_endpoint_descriptor *ep_desc;
862 struct btusb_data *data;
863 struct hci_dev *hdev;
864 int i, err;
865
866 BT_DBG("intf %p id %p", intf, id);
867
868 /* interface numbers are hardcoded in the spec */
869 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
870 return -ENODEV;
871
872 if (!id->driver_info) {
873 const struct usb_device_id *match;
874 match = usb_match_id(intf, blacklist_table);
875 if (match)
876 id = match;
877 }
878
879 if (id->driver_info == BTUSB_IGNORE)
880 return -ENODEV;
881
882 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
883 return -ENODEV;
884
885 if (ignore_csr && id->driver_info & BTUSB_CSR)
886 return -ENODEV;
887
888 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
889 return -ENODEV;
890
891 data = kzalloc(sizeof(*data), GFP_KERNEL);
892 if (!data)
893 return -ENOMEM;
894
895 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
896 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
897
898 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
899 data->intr_ep = ep_desc;
900 continue;
901 }
902
903 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
904 data->bulk_tx_ep = ep_desc;
905 continue;
906 }
907
908 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
909 data->bulk_rx_ep = ep_desc;
910 continue;
911 }
912 }
913
914 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
915 kfree(data);
916 return -ENODEV;
917 }
918
919 data->cmdreq_type = USB_TYPE_CLASS;
920
921 data->udev = interface_to_usbdev(intf);
922 data->intf = intf;
923
924 spin_lock_init(&data->lock);
925
926 INIT_WORK(&data->work, btusb_work);
927 INIT_WORK(&data->waker, btusb_waker);
928 spin_lock_init(&data->txlock);
929
930 init_usb_anchor(&data->tx_anchor);
931 init_usb_anchor(&data->intr_anchor);
932 init_usb_anchor(&data->bulk_anchor);
933 init_usb_anchor(&data->isoc_anchor);
934 init_usb_anchor(&data->deferred);
935
936 hdev = hci_alloc_dev();
937 if (!hdev) {
938 kfree(data);
939 return -ENOMEM;
940 }
941
942 hdev->bus = HCI_USB;
943 hdev->driver_data = data;
944
945 data->hdev = hdev;
946
947 SET_HCIDEV_DEV(hdev, &intf->dev);
948
949 hdev->open = btusb_open;
950 hdev->close = btusb_close;
951 hdev->flush = btusb_flush;
952 hdev->send = btusb_send_frame;
953 hdev->destruct = btusb_destruct;
954 hdev->notify = btusb_notify;
955
956 hdev->owner = THIS_MODULE;
957
958 /* Interface numbers are hardcoded in the specification */
959 data->isoc = usb_ifnum_to_if(data->udev, 1);
960
961 if (!reset)
962 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
963
964 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
965 if (!disable_scofix)
966 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
967 }
968
969 if (id->driver_info & BTUSB_BROKEN_ISOC)
970 data->isoc = NULL;
971
972 if (id->driver_info & BTUSB_DIGIANSWER) {
973 data->cmdreq_type = USB_TYPE_VENDOR;
974 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
975 }
976
977 if (id->driver_info & BTUSB_CSR) {
978 struct usb_device *udev = data->udev;
979
980 /* Old firmware would otherwise execute USB reset */
981 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
982 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
983 }
984
985 if (id->driver_info & BTUSB_SNIFFER) {
986 struct usb_device *udev = data->udev;
987
988 /* New sniffer firmware has crippled HCI interface */
989 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
990 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
991
992 data->isoc = NULL;
993 }
994
995 if (id->driver_info & BTUSB_BCM92035) {
996 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
997 struct sk_buff *skb;
998
999 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1000 if (skb) {
1001 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1002 skb_queue_tail(&hdev->driver_init, skb);
1003 }
1004 }
1005
1006 if (data->isoc) {
1007 err = usb_driver_claim_interface(&btusb_driver,
1008 data->isoc, data);
1009 if (err < 0) {
1010 hci_free_dev(hdev);
1011 kfree(data);
1012 return err;
1013 }
1014 }
1015
1016 err = hci_register_dev(hdev);
1017 if (err < 0) {
1018 hci_free_dev(hdev);
1019 kfree(data);
1020 return err;
1021 }
1022
1023 usb_set_intfdata(intf, data);
1024
1025 return 0;
1026 }
1027
1028 static void btusb_disconnect(struct usb_interface *intf)
1029 {
1030 struct btusb_data *data = usb_get_intfdata(intf);
1031 struct hci_dev *hdev;
1032
1033 BT_DBG("intf %p", intf);
1034
1035 if (!data)
1036 return;
1037
1038 hdev = data->hdev;
1039
1040 __hci_dev_hold(hdev);
1041
1042 usb_set_intfdata(data->intf, NULL);
1043
1044 if (data->isoc)
1045 usb_set_intfdata(data->isoc, NULL);
1046
1047 hci_unregister_dev(hdev);
1048
1049 if (intf == data->isoc)
1050 usb_driver_release_interface(&btusb_driver, data->intf);
1051 else if (data->isoc)
1052 usb_driver_release_interface(&btusb_driver, data->isoc);
1053
1054 __hci_dev_put(hdev);
1055
1056 hci_free_dev(hdev);
1057 }
1058
1059 #ifdef CONFIG_PM
1060 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1061 {
1062 struct btusb_data *data = usb_get_intfdata(intf);
1063
1064 BT_DBG("intf %p", intf);
1065
1066 if (data->suspend_count++)
1067 return 0;
1068
1069 spin_lock_irq(&data->txlock);
1070 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1071 set_bit(BTUSB_SUSPENDING, &data->flags);
1072 spin_unlock_irq(&data->txlock);
1073 } else {
1074 spin_unlock_irq(&data->txlock);
1075 data->suspend_count--;
1076 return -EBUSY;
1077 }
1078
1079 cancel_work_sync(&data->work);
1080
1081 btusb_stop_traffic(data);
1082 usb_kill_anchored_urbs(&data->tx_anchor);
1083
1084 return 0;
1085 }
1086
1087 static void play_deferred(struct btusb_data *data)
1088 {
1089 struct urb *urb;
1090 int err;
1091
1092 while ((urb = usb_get_from_anchor(&data->deferred))) {
1093 err = usb_submit_urb(urb, GFP_ATOMIC);
1094 if (err < 0)
1095 break;
1096
1097 data->tx_in_flight++;
1098 }
1099 usb_scuttle_anchored_urbs(&data->deferred);
1100 }
1101
1102 static int btusb_resume(struct usb_interface *intf)
1103 {
1104 struct btusb_data *data = usb_get_intfdata(intf);
1105 struct hci_dev *hdev = data->hdev;
1106 int err = 0;
1107
1108 BT_DBG("intf %p", intf);
1109
1110 if (--data->suspend_count)
1111 return 0;
1112
1113 if (!test_bit(HCI_RUNNING, &hdev->flags))
1114 goto done;
1115
1116 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1117 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1118 if (err < 0) {
1119 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1120 goto failed;
1121 }
1122 }
1123
1124 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1125 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1126 if (err < 0) {
1127 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1128 goto failed;
1129 }
1130
1131 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1132 }
1133
1134 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1135 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1136 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1137 else
1138 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1139 }
1140
1141 spin_lock_irq(&data->txlock);
1142 play_deferred(data);
1143 clear_bit(BTUSB_SUSPENDING, &data->flags);
1144 spin_unlock_irq(&data->txlock);
1145 schedule_work(&data->work);
1146
1147 return 0;
1148
1149 failed:
1150 usb_scuttle_anchored_urbs(&data->deferred);
1151 done:
1152 spin_lock_irq(&data->txlock);
1153 clear_bit(BTUSB_SUSPENDING, &data->flags);
1154 spin_unlock_irq(&data->txlock);
1155
1156 return err;
1157 }
1158 #endif
1159
1160 static struct usb_driver btusb_driver = {
1161 .name = "btusb",
1162 .probe = btusb_probe,
1163 .disconnect = btusb_disconnect,
1164 #ifdef CONFIG_PM
1165 .suspend = btusb_suspend,
1166 .resume = btusb_resume,
1167 #endif
1168 .id_table = btusb_table,
1169 .supports_autosuspend = 1,
1170 };
1171
1172 static int __init btusb_init(void)
1173 {
1174 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1175
1176 return usb_register(&btusb_driver);
1177 }
1178
1179 static void __exit btusb_exit(void)
1180 {
1181 usb_deregister(&btusb_driver);
1182 }
1183
1184 module_init(btusb_init);
1185 module_exit(btusb_exit);
1186
1187 module_param(ignore_dga, bool, 0644);
1188 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1189
1190 module_param(ignore_csr, bool, 0644);
1191 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1192
1193 module_param(ignore_sniffer, bool, 0644);
1194 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1195
1196 module_param(disable_scofix, bool, 0644);
1197 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1198
1199 module_param(force_scofix, bool, 0644);
1200 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1201
1202 module_param(reset, bool, 0644);
1203 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1204
1205 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1206 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1207 MODULE_VERSION(VERSION);
1208 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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