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Bluetooth: btusb: Add vendor specific ID (0489 e042) for BCM20702A0
[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 { } /* Terminating entry */
112 };
113
114 MODULE_DEVICE_TABLE(usb, btusb_table);
115
116 static struct usb_device_id blacklist_table[] = {
117 /* CSR BlueCore devices */
118 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
119
120 /* Broadcom BCM2033 without firmware */
121 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
122
123 /* Atheros 3011 with sflash firmware */
124 { USB_DEVICE(0x0cf3, 0x3002), .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
129 /* Atheros AR9285 Malbec with sflash firmware */
130 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
131
132 /* Atheros 3012 with sflash firmware */
133 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
134 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
136 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
137
138 /* Atheros AR5BBU12 with sflash firmware */
139 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
140
141 /* Broadcom BCM2035 */
142 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
143 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
144 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
145
146 /* Broadcom BCM2045 */
147 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
148 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
149
150 /* IBM/Lenovo ThinkPad with Broadcom chip */
151 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
152 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
153
154 /* HP laptop with Broadcom chip */
155 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
156
157 /* Dell laptop with Broadcom chip */
158 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160 /* Dell Wireless 370 and 410 devices */
161 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
163
164 /* Belkin F8T012 and F8T013 devices */
165 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
166 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
167
168 /* Asus WL-BTD202 device */
169 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
170
171 /* Kensington Bluetooth USB adapter */
172 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
173
174 /* RTX Telecom based adapters with buggy SCO support */
175 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
176 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
177
178 /* CONWISE Technology based adapters with buggy SCO support */
179 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
180
181 /* Digianswer devices */
182 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
183 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
184
185 /* CSR BlueCore Bluetooth Sniffer */
186 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
187
188 /* Frontline ComProbe Bluetooth Sniffer */
189 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
190
191 { } /* Terminating entry */
192 };
193
194 #define BTUSB_MAX_ISOC_FRAMES 10
195
196 #define BTUSB_INTR_RUNNING 0
197 #define BTUSB_BULK_RUNNING 1
198 #define BTUSB_ISOC_RUNNING 2
199 #define BTUSB_SUSPENDING 3
200 #define BTUSB_DID_ISO_RESUME 4
201
202 struct btusb_data {
203 struct hci_dev *hdev;
204 struct usb_device *udev;
205 struct usb_interface *intf;
206 struct usb_interface *isoc;
207
208 spinlock_t lock;
209
210 unsigned long flags;
211
212 struct work_struct work;
213 struct work_struct waker;
214
215 struct usb_anchor tx_anchor;
216 struct usb_anchor intr_anchor;
217 struct usb_anchor bulk_anchor;
218 struct usb_anchor isoc_anchor;
219 struct usb_anchor deferred;
220 int tx_in_flight;
221 spinlock_t txlock;
222
223 struct usb_endpoint_descriptor *intr_ep;
224 struct usb_endpoint_descriptor *bulk_tx_ep;
225 struct usb_endpoint_descriptor *bulk_rx_ep;
226 struct usb_endpoint_descriptor *isoc_tx_ep;
227 struct usb_endpoint_descriptor *isoc_rx_ep;
228
229 __u8 cmdreq_type;
230
231 unsigned int sco_num;
232 int isoc_altsetting;
233 int suspend_count;
234 };
235
236 static int inc_tx(struct btusb_data *data)
237 {
238 unsigned long flags;
239 int rv;
240
241 spin_lock_irqsave(&data->txlock, flags);
242 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
243 if (!rv)
244 data->tx_in_flight++;
245 spin_unlock_irqrestore(&data->txlock, flags);
246
247 return rv;
248 }
249
250 static void btusb_intr_complete(struct urb *urb)
251 {
252 struct hci_dev *hdev = urb->context;
253 struct btusb_data *data = hci_get_drvdata(hdev);
254 int err;
255
256 BT_DBG("%s urb %p status %d count %d", hdev->name,
257 urb, urb->status, urb->actual_length);
258
259 if (!test_bit(HCI_RUNNING, &hdev->flags))
260 return;
261
262 if (urb->status == 0) {
263 hdev->stat.byte_rx += urb->actual_length;
264
265 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
266 urb->transfer_buffer,
267 urb->actual_length) < 0) {
268 BT_ERR("%s corrupted event packet", hdev->name);
269 hdev->stat.err_rx++;
270 }
271 }
272
273 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
274 return;
275
276 usb_mark_last_busy(data->udev);
277 usb_anchor_urb(urb, &data->intr_anchor);
278
279 err = usb_submit_urb(urb, GFP_ATOMIC);
280 if (err < 0) {
281 /* -EPERM: urb is being killed;
282 * -ENODEV: device got disconnected */
283 if (err != -EPERM && err != -ENODEV)
284 BT_ERR("%s urb %p failed to resubmit (%d)",
285 hdev->name, urb, -err);
286 usb_unanchor_urb(urb);
287 }
288 }
289
290 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
291 {
292 struct btusb_data *data = hci_get_drvdata(hdev);
293 struct urb *urb;
294 unsigned char *buf;
295 unsigned int pipe;
296 int err, size;
297
298 BT_DBG("%s", hdev->name);
299
300 if (!data->intr_ep)
301 return -ENODEV;
302
303 urb = usb_alloc_urb(0, mem_flags);
304 if (!urb)
305 return -ENOMEM;
306
307 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
308
309 buf = kmalloc(size, mem_flags);
310 if (!buf) {
311 usb_free_urb(urb);
312 return -ENOMEM;
313 }
314
315 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
316
317 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
318 btusb_intr_complete, hdev,
319 data->intr_ep->bInterval);
320
321 urb->transfer_flags |= URB_FREE_BUFFER;
322
323 usb_anchor_urb(urb, &data->intr_anchor);
324
325 err = usb_submit_urb(urb, mem_flags);
326 if (err < 0) {
327 if (err != -EPERM && err != -ENODEV)
328 BT_ERR("%s urb %p submission failed (%d)",
329 hdev->name, urb, -err);
330 usb_unanchor_urb(urb);
331 }
332
333 usb_free_urb(urb);
334
335 return err;
336 }
337
338 static void btusb_bulk_complete(struct urb *urb)
339 {
340 struct hci_dev *hdev = urb->context;
341 struct btusb_data *data = hci_get_drvdata(hdev);
342 int err;
343
344 BT_DBG("%s urb %p status %d count %d", hdev->name,
345 urb, urb->status, urb->actual_length);
346
347 if (!test_bit(HCI_RUNNING, &hdev->flags))
348 return;
349
350 if (urb->status == 0) {
351 hdev->stat.byte_rx += urb->actual_length;
352
353 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
354 urb->transfer_buffer,
355 urb->actual_length) < 0) {
356 BT_ERR("%s corrupted ACL packet", hdev->name);
357 hdev->stat.err_rx++;
358 }
359 }
360
361 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
362 return;
363
364 usb_anchor_urb(urb, &data->bulk_anchor);
365 usb_mark_last_busy(data->udev);
366
367 err = usb_submit_urb(urb, GFP_ATOMIC);
368 if (err < 0) {
369 /* -EPERM: urb is being killed;
370 * -ENODEV: device got disconnected */
371 if (err != -EPERM && err != -ENODEV)
372 BT_ERR("%s urb %p failed to resubmit (%d)",
373 hdev->name, urb, -err);
374 usb_unanchor_urb(urb);
375 }
376 }
377
378 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
379 {
380 struct btusb_data *data = hci_get_drvdata(hdev);
381 struct urb *urb;
382 unsigned char *buf;
383 unsigned int pipe;
384 int err, size = HCI_MAX_FRAME_SIZE;
385
386 BT_DBG("%s", hdev->name);
387
388 if (!data->bulk_rx_ep)
389 return -ENODEV;
390
391 urb = usb_alloc_urb(0, mem_flags);
392 if (!urb)
393 return -ENOMEM;
394
395 buf = kmalloc(size, mem_flags);
396 if (!buf) {
397 usb_free_urb(urb);
398 return -ENOMEM;
399 }
400
401 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
402
403 usb_fill_bulk_urb(urb, data->udev, pipe,
404 buf, size, btusb_bulk_complete, hdev);
405
406 urb->transfer_flags |= URB_FREE_BUFFER;
407
408 usb_mark_last_busy(data->udev);
409 usb_anchor_urb(urb, &data->bulk_anchor);
410
411 err = usb_submit_urb(urb, mem_flags);
412 if (err < 0) {
413 if (err != -EPERM && err != -ENODEV)
414 BT_ERR("%s urb %p submission failed (%d)",
415 hdev->name, urb, -err);
416 usb_unanchor_urb(urb);
417 }
418
419 usb_free_urb(urb);
420
421 return err;
422 }
423
424 static void btusb_isoc_complete(struct urb *urb)
425 {
426 struct hci_dev *hdev = urb->context;
427 struct btusb_data *data = hci_get_drvdata(hdev);
428 int i, err;
429
430 BT_DBG("%s urb %p status %d count %d", hdev->name,
431 urb, urb->status, urb->actual_length);
432
433 if (!test_bit(HCI_RUNNING, &hdev->flags))
434 return;
435
436 if (urb->status == 0) {
437 for (i = 0; i < urb->number_of_packets; i++) {
438 unsigned int offset = urb->iso_frame_desc[i].offset;
439 unsigned int length = urb->iso_frame_desc[i].actual_length;
440
441 if (urb->iso_frame_desc[i].status)
442 continue;
443
444 hdev->stat.byte_rx += length;
445
446 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
447 urb->transfer_buffer + offset,
448 length) < 0) {
449 BT_ERR("%s corrupted SCO packet", hdev->name);
450 hdev->stat.err_rx++;
451 }
452 }
453 }
454
455 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
456 return;
457
458 usb_anchor_urb(urb, &data->isoc_anchor);
459
460 err = usb_submit_urb(urb, GFP_ATOMIC);
461 if (err < 0) {
462 /* -EPERM: urb is being killed;
463 * -ENODEV: device got disconnected */
464 if (err != -EPERM && err != -ENODEV)
465 BT_ERR("%s urb %p failed to resubmit (%d)",
466 hdev->name, urb, -err);
467 usb_unanchor_urb(urb);
468 }
469 }
470
471 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
472 {
473 int i, offset = 0;
474
475 BT_DBG("len %d mtu %d", len, mtu);
476
477 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
478 i++, offset += mtu, len -= mtu) {
479 urb->iso_frame_desc[i].offset = offset;
480 urb->iso_frame_desc[i].length = mtu;
481 }
482
483 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
484 urb->iso_frame_desc[i].offset = offset;
485 urb->iso_frame_desc[i].length = len;
486 i++;
487 }
488
489 urb->number_of_packets = i;
490 }
491
492 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
493 {
494 struct btusb_data *data = hci_get_drvdata(hdev);
495 struct urb *urb;
496 unsigned char *buf;
497 unsigned int pipe;
498 int err, size;
499
500 BT_DBG("%s", hdev->name);
501
502 if (!data->isoc_rx_ep)
503 return -ENODEV;
504
505 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
506 if (!urb)
507 return -ENOMEM;
508
509 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
510 BTUSB_MAX_ISOC_FRAMES;
511
512 buf = kmalloc(size, mem_flags);
513 if (!buf) {
514 usb_free_urb(urb);
515 return -ENOMEM;
516 }
517
518 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
519
520 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
521 hdev, data->isoc_rx_ep->bInterval);
522
523 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
524
525 __fill_isoc_descriptor(urb, size,
526 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
527
528 usb_anchor_urb(urb, &data->isoc_anchor);
529
530 err = usb_submit_urb(urb, mem_flags);
531 if (err < 0) {
532 if (err != -EPERM && err != -ENODEV)
533 BT_ERR("%s urb %p submission failed (%d)",
534 hdev->name, urb, -err);
535 usb_unanchor_urb(urb);
536 }
537
538 usb_free_urb(urb);
539
540 return err;
541 }
542
543 static void btusb_tx_complete(struct urb *urb)
544 {
545 struct sk_buff *skb = urb->context;
546 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
547 struct btusb_data *data = hci_get_drvdata(hdev);
548
549 BT_DBG("%s urb %p status %d count %d", hdev->name,
550 urb, urb->status, urb->actual_length);
551
552 if (!test_bit(HCI_RUNNING, &hdev->flags))
553 goto done;
554
555 if (!urb->status)
556 hdev->stat.byte_tx += urb->transfer_buffer_length;
557 else
558 hdev->stat.err_tx++;
559
560 done:
561 spin_lock(&data->txlock);
562 data->tx_in_flight--;
563 spin_unlock(&data->txlock);
564
565 kfree(urb->setup_packet);
566
567 kfree_skb(skb);
568 }
569
570 static void btusb_isoc_tx_complete(struct urb *urb)
571 {
572 struct sk_buff *skb = urb->context;
573 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
574
575 BT_DBG("%s urb %p status %d count %d", hdev->name,
576 urb, urb->status, urb->actual_length);
577
578 if (!test_bit(HCI_RUNNING, &hdev->flags))
579 goto done;
580
581 if (!urb->status)
582 hdev->stat.byte_tx += urb->transfer_buffer_length;
583 else
584 hdev->stat.err_tx++;
585
586 done:
587 kfree(urb->setup_packet);
588
589 kfree_skb(skb);
590 }
591
592 static int btusb_open(struct hci_dev *hdev)
593 {
594 struct btusb_data *data = hci_get_drvdata(hdev);
595 int err;
596
597 BT_DBG("%s", hdev->name);
598
599 err = usb_autopm_get_interface(data->intf);
600 if (err < 0)
601 return err;
602
603 data->intf->needs_remote_wakeup = 1;
604
605 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
606 goto done;
607
608 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
609 goto done;
610
611 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
612 if (err < 0)
613 goto failed;
614
615 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
616 if (err < 0) {
617 usb_kill_anchored_urbs(&data->intr_anchor);
618 goto failed;
619 }
620
621 set_bit(BTUSB_BULK_RUNNING, &data->flags);
622 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
623
624 done:
625 usb_autopm_put_interface(data->intf);
626 return 0;
627
628 failed:
629 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
630 clear_bit(HCI_RUNNING, &hdev->flags);
631 usb_autopm_put_interface(data->intf);
632 return err;
633 }
634
635 static void btusb_stop_traffic(struct btusb_data *data)
636 {
637 usb_kill_anchored_urbs(&data->intr_anchor);
638 usb_kill_anchored_urbs(&data->bulk_anchor);
639 usb_kill_anchored_urbs(&data->isoc_anchor);
640 }
641
642 static int btusb_close(struct hci_dev *hdev)
643 {
644 struct btusb_data *data = hci_get_drvdata(hdev);
645 int err;
646
647 BT_DBG("%s", hdev->name);
648
649 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
650 return 0;
651
652 cancel_work_sync(&data->work);
653 cancel_work_sync(&data->waker);
654
655 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
656 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
657 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
658
659 btusb_stop_traffic(data);
660 err = usb_autopm_get_interface(data->intf);
661 if (err < 0)
662 goto failed;
663
664 data->intf->needs_remote_wakeup = 0;
665 usb_autopm_put_interface(data->intf);
666
667 failed:
668 usb_scuttle_anchored_urbs(&data->deferred);
669 return 0;
670 }
671
672 static int btusb_flush(struct hci_dev *hdev)
673 {
674 struct btusb_data *data = hci_get_drvdata(hdev);
675
676 BT_DBG("%s", hdev->name);
677
678 usb_kill_anchored_urbs(&data->tx_anchor);
679
680 return 0;
681 }
682
683 static int btusb_send_frame(struct sk_buff *skb)
684 {
685 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
686 struct btusb_data *data = hci_get_drvdata(hdev);
687 struct usb_ctrlrequest *dr;
688 struct urb *urb;
689 unsigned int pipe;
690 int err;
691
692 BT_DBG("%s", hdev->name);
693
694 if (!test_bit(HCI_RUNNING, &hdev->flags))
695 return -EBUSY;
696
697 switch (bt_cb(skb)->pkt_type) {
698 case HCI_COMMAND_PKT:
699 urb = usb_alloc_urb(0, GFP_ATOMIC);
700 if (!urb)
701 return -ENOMEM;
702
703 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
704 if (!dr) {
705 usb_free_urb(urb);
706 return -ENOMEM;
707 }
708
709 dr->bRequestType = data->cmdreq_type;
710 dr->bRequest = 0;
711 dr->wIndex = 0;
712 dr->wValue = 0;
713 dr->wLength = __cpu_to_le16(skb->len);
714
715 pipe = usb_sndctrlpipe(data->udev, 0x00);
716
717 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
718 skb->data, skb->len, btusb_tx_complete, skb);
719
720 hdev->stat.cmd_tx++;
721 break;
722
723 case HCI_ACLDATA_PKT:
724 if (!data->bulk_tx_ep)
725 return -ENODEV;
726
727 urb = usb_alloc_urb(0, GFP_ATOMIC);
728 if (!urb)
729 return -ENOMEM;
730
731 pipe = usb_sndbulkpipe(data->udev,
732 data->bulk_tx_ep->bEndpointAddress);
733
734 usb_fill_bulk_urb(urb, data->udev, pipe,
735 skb->data, skb->len, btusb_tx_complete, skb);
736
737 hdev->stat.acl_tx++;
738 break;
739
740 case HCI_SCODATA_PKT:
741 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
742 return -ENODEV;
743
744 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
745 if (!urb)
746 return -ENOMEM;
747
748 pipe = usb_sndisocpipe(data->udev,
749 data->isoc_tx_ep->bEndpointAddress);
750
751 usb_fill_int_urb(urb, data->udev, pipe,
752 skb->data, skb->len, btusb_isoc_tx_complete,
753 skb, data->isoc_tx_ep->bInterval);
754
755 urb->transfer_flags = URB_ISO_ASAP;
756
757 __fill_isoc_descriptor(urb, skb->len,
758 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
759
760 hdev->stat.sco_tx++;
761 goto skip_waking;
762
763 default:
764 return -EILSEQ;
765 }
766
767 err = inc_tx(data);
768 if (err) {
769 usb_anchor_urb(urb, &data->deferred);
770 schedule_work(&data->waker);
771 err = 0;
772 goto done;
773 }
774
775 skip_waking:
776 usb_anchor_urb(urb, &data->tx_anchor);
777
778 err = usb_submit_urb(urb, GFP_ATOMIC);
779 if (err < 0) {
780 if (err != -EPERM && err != -ENODEV)
781 BT_ERR("%s urb %p submission failed (%d)",
782 hdev->name, urb, -err);
783 kfree(urb->setup_packet);
784 usb_unanchor_urb(urb);
785 } else {
786 usb_mark_last_busy(data->udev);
787 }
788
789 done:
790 usb_free_urb(urb);
791 return err;
792 }
793
794 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
795 {
796 struct btusb_data *data = hci_get_drvdata(hdev);
797
798 BT_DBG("%s evt %d", hdev->name, evt);
799
800 if (hdev->conn_hash.sco_num != data->sco_num) {
801 data->sco_num = hdev->conn_hash.sco_num;
802 schedule_work(&data->work);
803 }
804 }
805
806 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
807 {
808 struct btusb_data *data = hci_get_drvdata(hdev);
809 struct usb_interface *intf = data->isoc;
810 struct usb_endpoint_descriptor *ep_desc;
811 int i, err;
812
813 if (!data->isoc)
814 return -ENODEV;
815
816 err = usb_set_interface(data->udev, 1, altsetting);
817 if (err < 0) {
818 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
819 return err;
820 }
821
822 data->isoc_altsetting = altsetting;
823
824 data->isoc_tx_ep = NULL;
825 data->isoc_rx_ep = NULL;
826
827 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
828 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
829
830 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
831 data->isoc_tx_ep = ep_desc;
832 continue;
833 }
834
835 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
836 data->isoc_rx_ep = ep_desc;
837 continue;
838 }
839 }
840
841 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
842 BT_ERR("%s invalid SCO descriptors", hdev->name);
843 return -ENODEV;
844 }
845
846 return 0;
847 }
848
849 static void btusb_work(struct work_struct *work)
850 {
851 struct btusb_data *data = container_of(work, struct btusb_data, work);
852 struct hci_dev *hdev = data->hdev;
853 int err;
854
855 if (hdev->conn_hash.sco_num > 0) {
856 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
857 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
858 if (err < 0) {
859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
860 usb_kill_anchored_urbs(&data->isoc_anchor);
861 return;
862 }
863
864 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
865 }
866 if (data->isoc_altsetting != 2) {
867 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
868 usb_kill_anchored_urbs(&data->isoc_anchor);
869
870 if (__set_isoc_interface(hdev, 2) < 0)
871 return;
872 }
873
874 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
875 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
876 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
877 else
878 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
879 }
880 } else {
881 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
882 usb_kill_anchored_urbs(&data->isoc_anchor);
883
884 __set_isoc_interface(hdev, 0);
885 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
886 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
887 }
888 }
889
890 static void btusb_waker(struct work_struct *work)
891 {
892 struct btusb_data *data = container_of(work, struct btusb_data, waker);
893 int err;
894
895 err = usb_autopm_get_interface(data->intf);
896 if (err < 0)
897 return;
898
899 usb_autopm_put_interface(data->intf);
900 }
901
902 static int btusb_probe(struct usb_interface *intf,
903 const struct usb_device_id *id)
904 {
905 struct usb_endpoint_descriptor *ep_desc;
906 struct btusb_data *data;
907 struct hci_dev *hdev;
908 int i, err;
909
910 BT_DBG("intf %p id %p", intf, id);
911
912 /* interface numbers are hardcoded in the spec */
913 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
914 return -ENODEV;
915
916 if (!id->driver_info) {
917 const struct usb_device_id *match;
918 match = usb_match_id(intf, blacklist_table);
919 if (match)
920 id = match;
921 }
922
923 if (id->driver_info == BTUSB_IGNORE)
924 return -ENODEV;
925
926 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
927 return -ENODEV;
928
929 if (ignore_csr && id->driver_info & BTUSB_CSR)
930 return -ENODEV;
931
932 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
933 return -ENODEV;
934
935 if (id->driver_info & BTUSB_ATH3012) {
936 struct usb_device *udev = interface_to_usbdev(intf);
937
938 /* Old firmware would otherwise let ath3k driver load
939 * patch and sysconfig files */
940 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
941 return -ENODEV;
942 }
943
944 data = kzalloc(sizeof(*data), GFP_KERNEL);
945 if (!data)
946 return -ENOMEM;
947
948 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
949 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
950
951 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
952 data->intr_ep = ep_desc;
953 continue;
954 }
955
956 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
957 data->bulk_tx_ep = ep_desc;
958 continue;
959 }
960
961 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
962 data->bulk_rx_ep = ep_desc;
963 continue;
964 }
965 }
966
967 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
968 kfree(data);
969 return -ENODEV;
970 }
971
972 data->cmdreq_type = USB_TYPE_CLASS;
973
974 data->udev = interface_to_usbdev(intf);
975 data->intf = intf;
976
977 spin_lock_init(&data->lock);
978
979 INIT_WORK(&data->work, btusb_work);
980 INIT_WORK(&data->waker, btusb_waker);
981 spin_lock_init(&data->txlock);
982
983 init_usb_anchor(&data->tx_anchor);
984 init_usb_anchor(&data->intr_anchor);
985 init_usb_anchor(&data->bulk_anchor);
986 init_usb_anchor(&data->isoc_anchor);
987 init_usb_anchor(&data->deferred);
988
989 hdev = hci_alloc_dev();
990 if (!hdev) {
991 kfree(data);
992 return -ENOMEM;
993 }
994
995 hdev->bus = HCI_USB;
996 hci_set_drvdata(hdev, data);
997
998 data->hdev = hdev;
999
1000 SET_HCIDEV_DEV(hdev, &intf->dev);
1001
1002 hdev->open = btusb_open;
1003 hdev->close = btusb_close;
1004 hdev->flush = btusb_flush;
1005 hdev->send = btusb_send_frame;
1006 hdev->notify = btusb_notify;
1007
1008 /* Interface numbers are hardcoded in the specification */
1009 data->isoc = usb_ifnum_to_if(data->udev, 1);
1010
1011 if (!reset)
1012 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1013
1014 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1015 if (!disable_scofix)
1016 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1017 }
1018
1019 if (id->driver_info & BTUSB_BROKEN_ISOC)
1020 data->isoc = NULL;
1021
1022 if (id->driver_info & BTUSB_DIGIANSWER) {
1023 data->cmdreq_type = USB_TYPE_VENDOR;
1024 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1025 }
1026
1027 if (id->driver_info & BTUSB_CSR) {
1028 struct usb_device *udev = data->udev;
1029
1030 /* Old firmware would otherwise execute USB reset */
1031 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1032 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1033 }
1034
1035 if (id->driver_info & BTUSB_SNIFFER) {
1036 struct usb_device *udev = data->udev;
1037
1038 /* New sniffer firmware has crippled HCI interface */
1039 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1040 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1041
1042 data->isoc = NULL;
1043 }
1044
1045 if (id->driver_info & BTUSB_BCM92035) {
1046 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1047 struct sk_buff *skb;
1048
1049 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1050 if (skb) {
1051 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1052 skb_queue_tail(&hdev->driver_init, skb);
1053 }
1054 }
1055
1056 if (data->isoc) {
1057 err = usb_driver_claim_interface(&btusb_driver,
1058 data->isoc, data);
1059 if (err < 0) {
1060 hci_free_dev(hdev);
1061 kfree(data);
1062 return err;
1063 }
1064 }
1065
1066 err = hci_register_dev(hdev);
1067 if (err < 0) {
1068 hci_free_dev(hdev);
1069 kfree(data);
1070 return err;
1071 }
1072
1073 usb_set_intfdata(intf, data);
1074
1075 return 0;
1076 }
1077
1078 static void btusb_disconnect(struct usb_interface *intf)
1079 {
1080 struct btusb_data *data = usb_get_intfdata(intf);
1081 struct hci_dev *hdev;
1082
1083 BT_DBG("intf %p", intf);
1084
1085 if (!data)
1086 return;
1087
1088 hdev = data->hdev;
1089 usb_set_intfdata(data->intf, NULL);
1090
1091 if (data->isoc)
1092 usb_set_intfdata(data->isoc, NULL);
1093
1094 hci_unregister_dev(hdev);
1095
1096 if (intf == data->isoc)
1097 usb_driver_release_interface(&btusb_driver, data->intf);
1098 else if (data->isoc)
1099 usb_driver_release_interface(&btusb_driver, data->isoc);
1100
1101 hci_free_dev(hdev);
1102 kfree(data);
1103 }
1104
1105 #ifdef CONFIG_PM
1106 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1107 {
1108 struct btusb_data *data = usb_get_intfdata(intf);
1109
1110 BT_DBG("intf %p", intf);
1111
1112 if (data->suspend_count++)
1113 return 0;
1114
1115 spin_lock_irq(&data->txlock);
1116 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1117 set_bit(BTUSB_SUSPENDING, &data->flags);
1118 spin_unlock_irq(&data->txlock);
1119 } else {
1120 spin_unlock_irq(&data->txlock);
1121 data->suspend_count--;
1122 return -EBUSY;
1123 }
1124
1125 cancel_work_sync(&data->work);
1126
1127 btusb_stop_traffic(data);
1128 usb_kill_anchored_urbs(&data->tx_anchor);
1129
1130 return 0;
1131 }
1132
1133 static void play_deferred(struct btusb_data *data)
1134 {
1135 struct urb *urb;
1136 int err;
1137
1138 while ((urb = usb_get_from_anchor(&data->deferred))) {
1139 err = usb_submit_urb(urb, GFP_ATOMIC);
1140 if (err < 0)
1141 break;
1142
1143 data->tx_in_flight++;
1144 }
1145 usb_scuttle_anchored_urbs(&data->deferred);
1146 }
1147
1148 static int btusb_resume(struct usb_interface *intf)
1149 {
1150 struct btusb_data *data = usb_get_intfdata(intf);
1151 struct hci_dev *hdev = data->hdev;
1152 int err = 0;
1153
1154 BT_DBG("intf %p", intf);
1155
1156 if (--data->suspend_count)
1157 return 0;
1158
1159 if (!test_bit(HCI_RUNNING, &hdev->flags))
1160 goto done;
1161
1162 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1163 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1164 if (err < 0) {
1165 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1166 goto failed;
1167 }
1168 }
1169
1170 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1171 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1172 if (err < 0) {
1173 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1174 goto failed;
1175 }
1176
1177 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1178 }
1179
1180 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1181 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1182 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1183 else
1184 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1185 }
1186
1187 spin_lock_irq(&data->txlock);
1188 play_deferred(data);
1189 clear_bit(BTUSB_SUSPENDING, &data->flags);
1190 spin_unlock_irq(&data->txlock);
1191 schedule_work(&data->work);
1192
1193 return 0;
1194
1195 failed:
1196 usb_scuttle_anchored_urbs(&data->deferred);
1197 done:
1198 spin_lock_irq(&data->txlock);
1199 clear_bit(BTUSB_SUSPENDING, &data->flags);
1200 spin_unlock_irq(&data->txlock);
1201
1202 return err;
1203 }
1204 #endif
1205
1206 static struct usb_driver btusb_driver = {
1207 .name = "btusb",
1208 .probe = btusb_probe,
1209 .disconnect = btusb_disconnect,
1210 #ifdef CONFIG_PM
1211 .suspend = btusb_suspend,
1212 .resume = btusb_resume,
1213 #endif
1214 .id_table = btusb_table,
1215 .supports_autosuspend = 1,
1216 };
1217
1218 module_usb_driver(btusb_driver);
1219
1220 module_param(ignore_dga, bool, 0644);
1221 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1222
1223 module_param(ignore_csr, bool, 0644);
1224 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1225
1226 module_param(ignore_sniffer, bool, 0644);
1227 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1228
1229 module_param(disable_scofix, bool, 0644);
1230 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1231
1232 module_param(force_scofix, bool, 0644);
1233 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1234
1235 module_param(reset, bool, 0644);
1236 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1237
1238 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1239 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1240 MODULE_VERSION(VERSION);
1241 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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