projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[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(0x05ac, 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(0x0a5c, 0x21e3) },
105 { USB_DEVICE(0x0a5c, 0x21e6) },
106 { USB_DEVICE(0x0a5c, 0x21f3) },
107 { USB_DEVICE(0x413c, 0x8197) },
108
109 { } /* Terminating entry */
110 };
111
112 MODULE_DEVICE_TABLE(usb, btusb_table);
113
114 static struct usb_device_id blacklist_table[] = {
115 /* CSR BlueCore devices */
116 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
117
118 /* Broadcom BCM2033 without firmware */
119 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
120
121 /* Atheros 3011 with sflash firmware */
122 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
123 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
124 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
125 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
126
127 /* Atheros AR9285 Malbec with sflash firmware */
128 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
129
130 /* Atheros 3012 with sflash firmware */
131 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
132 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
133
134 /* Atheros AR5BBU12 with sflash firmware */
135 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
136
137 /* Broadcom BCM2035 */
138 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
139 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
140 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
141
142 /* Broadcom BCM2045 */
143 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
144 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
145
146 /* IBM/Lenovo ThinkPad with Broadcom chip */
147 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
148 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
149
150 /* HP laptop with Broadcom chip */
151 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
152
153 /* Dell laptop with Broadcom chip */
154 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156 /* Dell Wireless 370 and 410 devices */
157 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
158 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160 /* Belkin F8T012 and F8T013 devices */
161 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
163
164 /* Asus WL-BTD202 device */
165 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
166
167 /* Kensington Bluetooth USB adapter */
168 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170 /* RTX Telecom based adapters with buggy SCO support */
171 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
172 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
173
174 /* CONWISE Technology based adapters with buggy SCO support */
175 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
176
177 /* Digianswer devices */
178 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
179 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
180
181 /* CSR BlueCore Bluetooth Sniffer */
182 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
183
184 /* Frontline ComProbe Bluetooth Sniffer */
185 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
186
187 { } /* Terminating entry */
188 };
189
190 #define BTUSB_MAX_ISOC_FRAMES 10
191
192 #define BTUSB_INTR_RUNNING 0
193 #define BTUSB_BULK_RUNNING 1
194 #define BTUSB_ISOC_RUNNING 2
195 #define BTUSB_SUSPENDING 3
196 #define BTUSB_DID_ISO_RESUME 4
197
198 struct btusb_data {
199 struct hci_dev *hdev;
200 struct usb_device *udev;
201 struct usb_interface *intf;
202 struct usb_interface *isoc;
203
204 spinlock_t lock;
205
206 unsigned long flags;
207
208 struct work_struct work;
209 struct work_struct waker;
210
211 struct usb_anchor tx_anchor;
212 struct usb_anchor intr_anchor;
213 struct usb_anchor bulk_anchor;
214 struct usb_anchor isoc_anchor;
215 struct usb_anchor deferred;
216 int tx_in_flight;
217 spinlock_t txlock;
218
219 struct usb_endpoint_descriptor *intr_ep;
220 struct usb_endpoint_descriptor *bulk_tx_ep;
221 struct usb_endpoint_descriptor *bulk_rx_ep;
222 struct usb_endpoint_descriptor *isoc_tx_ep;
223 struct usb_endpoint_descriptor *isoc_rx_ep;
224
225 __u8 cmdreq_type;
226
227 unsigned int sco_num;
228 int isoc_altsetting;
229 int suspend_count;
230 };
231
232 static int inc_tx(struct btusb_data *data)
233 {
234 unsigned long flags;
235 int rv;
236
237 spin_lock_irqsave(&data->txlock, flags);
238 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
239 if (!rv)
240 data->tx_in_flight++;
241 spin_unlock_irqrestore(&data->txlock, flags);
242
243 return rv;
244 }
245
246 static void btusb_intr_complete(struct urb *urb)
247 {
248 struct hci_dev *hdev = urb->context;
249 struct btusb_data *data = hci_get_drvdata(hdev);
250 int err;
251
252 BT_DBG("%s urb %p status %d count %d", hdev->name,
253 urb, urb->status, urb->actual_length);
254
255 if (!test_bit(HCI_RUNNING, &hdev->flags))
256 return;
257
258 if (urb->status == 0) {
259 hdev->stat.byte_rx += urb->actual_length;
260
261 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
262 urb->transfer_buffer,
263 urb->actual_length) < 0) {
264 BT_ERR("%s corrupted event packet", hdev->name);
265 hdev->stat.err_rx++;
266 }
267 }
268
269 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
270 return;
271
272 usb_mark_last_busy(data->udev);
273 usb_anchor_urb(urb, &data->intr_anchor);
274
275 err = usb_submit_urb(urb, GFP_ATOMIC);
276 if (err < 0) {
277 /* -EPERM: urb is being killed;
278 * -ENODEV: device got disconnected */
279 if (err != -EPERM && err != -ENODEV)
280 BT_ERR("%s urb %p failed to resubmit (%d)",
281 hdev->name, urb, -err);
282 usb_unanchor_urb(urb);
283 }
284 }
285
286 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
287 {
288 struct btusb_data *data = hci_get_drvdata(hdev);
289 struct urb *urb;
290 unsigned char *buf;
291 unsigned int pipe;
292 int err, size;
293
294 BT_DBG("%s", hdev->name);
295
296 if (!data->intr_ep)
297 return -ENODEV;
298
299 urb = usb_alloc_urb(0, mem_flags);
300 if (!urb)
301 return -ENOMEM;
302
303 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
304
305 buf = kmalloc(size, mem_flags);
306 if (!buf) {
307 usb_free_urb(urb);
308 return -ENOMEM;
309 }
310
311 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
312
313 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
314 btusb_intr_complete, hdev,
315 data->intr_ep->bInterval);
316
317 urb->transfer_flags |= URB_FREE_BUFFER;
318
319 usb_anchor_urb(urb, &data->intr_anchor);
320
321 err = usb_submit_urb(urb, mem_flags);
322 if (err < 0) {
323 if (err != -EPERM && err != -ENODEV)
324 BT_ERR("%s urb %p submission failed (%d)",
325 hdev->name, urb, -err);
326 usb_unanchor_urb(urb);
327 }
328
329 usb_free_urb(urb);
330
331 return err;
332 }
333
334 static void btusb_bulk_complete(struct urb *urb)
335 {
336 struct hci_dev *hdev = urb->context;
337 struct btusb_data *data = hci_get_drvdata(hdev);
338 int err;
339
340 BT_DBG("%s urb %p status %d count %d", hdev->name,
341 urb, urb->status, urb->actual_length);
342
343 if (!test_bit(HCI_RUNNING, &hdev->flags))
344 return;
345
346 if (urb->status == 0) {
347 hdev->stat.byte_rx += urb->actual_length;
348
349 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
350 urb->transfer_buffer,
351 urb->actual_length) < 0) {
352 BT_ERR("%s corrupted ACL packet", hdev->name);
353 hdev->stat.err_rx++;
354 }
355 }
356
357 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
358 return;
359
360 usb_anchor_urb(urb, &data->bulk_anchor);
361 usb_mark_last_busy(data->udev);
362
363 err = usb_submit_urb(urb, GFP_ATOMIC);
364 if (err < 0) {
365 /* -EPERM: urb is being killed;
366 * -ENODEV: device got disconnected */
367 if (err != -EPERM && err != -ENODEV)
368 BT_ERR("%s urb %p failed to resubmit (%d)",
369 hdev->name, urb, -err);
370 usb_unanchor_urb(urb);
371 }
372 }
373
374 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
375 {
376 struct btusb_data *data = hci_get_drvdata(hdev);
377 struct urb *urb;
378 unsigned char *buf;
379 unsigned int pipe;
380 int err, size = HCI_MAX_FRAME_SIZE;
381
382 BT_DBG("%s", hdev->name);
383
384 if (!data->bulk_rx_ep)
385 return -ENODEV;
386
387 urb = usb_alloc_urb(0, mem_flags);
388 if (!urb)
389 return -ENOMEM;
390
391 buf = kmalloc(size, mem_flags);
392 if (!buf) {
393 usb_free_urb(urb);
394 return -ENOMEM;
395 }
396
397 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
398
399 usb_fill_bulk_urb(urb, data->udev, pipe,
400 buf, size, btusb_bulk_complete, hdev);
401
402 urb->transfer_flags |= URB_FREE_BUFFER;
403
404 usb_mark_last_busy(data->udev);
405 usb_anchor_urb(urb, &data->bulk_anchor);
406
407 err = usb_submit_urb(urb, mem_flags);
408 if (err < 0) {
409 if (err != -EPERM && err != -ENODEV)
410 BT_ERR("%s urb %p submission failed (%d)",
411 hdev->name, urb, -err);
412 usb_unanchor_urb(urb);
413 }
414
415 usb_free_urb(urb);
416
417 return err;
418 }
419
420 static void btusb_isoc_complete(struct urb *urb)
421 {
422 struct hci_dev *hdev = urb->context;
423 struct btusb_data *data = hci_get_drvdata(hdev);
424 int i, err;
425
426 BT_DBG("%s urb %p status %d count %d", hdev->name,
427 urb, urb->status, urb->actual_length);
428
429 if (!test_bit(HCI_RUNNING, &hdev->flags))
430 return;
431
432 if (urb->status == 0) {
433 for (i = 0; i < urb->number_of_packets; i++) {
434 unsigned int offset = urb->iso_frame_desc[i].offset;
435 unsigned int length = urb->iso_frame_desc[i].actual_length;
436
437 if (urb->iso_frame_desc[i].status)
438 continue;
439
440 hdev->stat.byte_rx += length;
441
442 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
443 urb->transfer_buffer + offset,
444 length) < 0) {
445 BT_ERR("%s corrupted SCO packet", hdev->name);
446 hdev->stat.err_rx++;
447 }
448 }
449 }
450
451 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
452 return;
453
454 usb_anchor_urb(urb, &data->isoc_anchor);
455
456 err = usb_submit_urb(urb, GFP_ATOMIC);
457 if (err < 0) {
458 /* -EPERM: urb is being killed;
459 * -ENODEV: device got disconnected */
460 if (err != -EPERM && err != -ENODEV)
461 BT_ERR("%s urb %p failed to resubmit (%d)",
462 hdev->name, urb, -err);
463 usb_unanchor_urb(urb);
464 }
465 }
466
467 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
468 {
469 int i, offset = 0;
470
471 BT_DBG("len %d mtu %d", len, mtu);
472
473 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
474 i++, offset += mtu, len -= mtu) {
475 urb->iso_frame_desc[i].offset = offset;
476 urb->iso_frame_desc[i].length = mtu;
477 }
478
479 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
480 urb->iso_frame_desc[i].offset = offset;
481 urb->iso_frame_desc[i].length = len;
482 i++;
483 }
484
485 urb->number_of_packets = i;
486 }
487
488 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
489 {
490 struct btusb_data *data = hci_get_drvdata(hdev);
491 struct urb *urb;
492 unsigned char *buf;
493 unsigned int pipe;
494 int err, size;
495
496 BT_DBG("%s", hdev->name);
497
498 if (!data->isoc_rx_ep)
499 return -ENODEV;
500
501 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
502 if (!urb)
503 return -ENOMEM;
504
505 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
506 BTUSB_MAX_ISOC_FRAMES;
507
508 buf = kmalloc(size, mem_flags);
509 if (!buf) {
510 usb_free_urb(urb);
511 return -ENOMEM;
512 }
513
514 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
515
516 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
517 hdev, data->isoc_rx_ep->bInterval);
518
519 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
520
521 __fill_isoc_descriptor(urb, size,
522 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
523
524 usb_anchor_urb(urb, &data->isoc_anchor);
525
526 err = usb_submit_urb(urb, mem_flags);
527 if (err < 0) {
528 if (err != -EPERM && err != -ENODEV)
529 BT_ERR("%s urb %p submission failed (%d)",
530 hdev->name, urb, -err);
531 usb_unanchor_urb(urb);
532 }
533
534 usb_free_urb(urb);
535
536 return err;
537 }
538
539 static void btusb_tx_complete(struct urb *urb)
540 {
541 struct sk_buff *skb = urb->context;
542 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
543 struct btusb_data *data = hci_get_drvdata(hdev);
544
545 BT_DBG("%s urb %p status %d count %d", hdev->name,
546 urb, urb->status, urb->actual_length);
547
548 if (!test_bit(HCI_RUNNING, &hdev->flags))
549 goto done;
550
551 if (!urb->status)
552 hdev->stat.byte_tx += urb->transfer_buffer_length;
553 else
554 hdev->stat.err_tx++;
555
556 done:
557 spin_lock(&data->txlock);
558 data->tx_in_flight--;
559 spin_unlock(&data->txlock);
560
561 kfree(urb->setup_packet);
562
563 kfree_skb(skb);
564 }
565
566 static void btusb_isoc_tx_complete(struct urb *urb)
567 {
568 struct sk_buff *skb = urb->context;
569 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
570
571 BT_DBG("%s urb %p status %d count %d", hdev->name,
572 urb, urb->status, urb->actual_length);
573
574 if (!test_bit(HCI_RUNNING, &hdev->flags))
575 goto done;
576
577 if (!urb->status)
578 hdev->stat.byte_tx += urb->transfer_buffer_length;
579 else
580 hdev->stat.err_tx++;
581
582 done:
583 kfree(urb->setup_packet);
584
585 kfree_skb(skb);
586 }
587
588 static int btusb_open(struct hci_dev *hdev)
589 {
590 struct btusb_data *data = hci_get_drvdata(hdev);
591 int err;
592
593 BT_DBG("%s", hdev->name);
594
595 err = usb_autopm_get_interface(data->intf);
596 if (err < 0)
597 return err;
598
599 data->intf->needs_remote_wakeup = 1;
600
601 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
602 goto done;
603
604 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
605 goto done;
606
607 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
608 if (err < 0)
609 goto failed;
610
611 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
612 if (err < 0) {
613 usb_kill_anchored_urbs(&data->intr_anchor);
614 goto failed;
615 }
616
617 set_bit(BTUSB_BULK_RUNNING, &data->flags);
618 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
619
620 done:
621 usb_autopm_put_interface(data->intf);
622 return 0;
623
624 failed:
625 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
626 clear_bit(HCI_RUNNING, &hdev->flags);
627 usb_autopm_put_interface(data->intf);
628 return err;
629 }
630
631 static void btusb_stop_traffic(struct btusb_data *data)
632 {
633 usb_kill_anchored_urbs(&data->intr_anchor);
634 usb_kill_anchored_urbs(&data->bulk_anchor);
635 usb_kill_anchored_urbs(&data->isoc_anchor);
636 }
637
638 static int btusb_close(struct hci_dev *hdev)
639 {
640 struct btusb_data *data = hci_get_drvdata(hdev);
641 int err;
642
643 BT_DBG("%s", hdev->name);
644
645 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
646 return 0;
647
648 cancel_work_sync(&data->work);
649 cancel_work_sync(&data->waker);
650
651 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
652 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
653 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
654
655 btusb_stop_traffic(data);
656 err = usb_autopm_get_interface(data->intf);
657 if (err < 0)
658 goto failed;
659
660 data->intf->needs_remote_wakeup = 0;
661 usb_autopm_put_interface(data->intf);
662
663 failed:
664 usb_scuttle_anchored_urbs(&data->deferred);
665 return 0;
666 }
667
668 static int btusb_flush(struct hci_dev *hdev)
669 {
670 struct btusb_data *data = hci_get_drvdata(hdev);
671
672 BT_DBG("%s", hdev->name);
673
674 usb_kill_anchored_urbs(&data->tx_anchor);
675
676 return 0;
677 }
678
679 static int btusb_send_frame(struct sk_buff *skb)
680 {
681 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
682 struct btusb_data *data = hci_get_drvdata(hdev);
683 struct usb_ctrlrequest *dr;
684 struct urb *urb;
685 unsigned int pipe;
686 int err;
687
688 BT_DBG("%s", hdev->name);
689
690 if (!test_bit(HCI_RUNNING, &hdev->flags))
691 return -EBUSY;
692
693 switch (bt_cb(skb)->pkt_type) {
694 case HCI_COMMAND_PKT:
695 urb = usb_alloc_urb(0, GFP_ATOMIC);
696 if (!urb)
697 return -ENOMEM;
698
699 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
700 if (!dr) {
701 usb_free_urb(urb);
702 return -ENOMEM;
703 }
704
705 dr->bRequestType = data->cmdreq_type;
706 dr->bRequest = 0;
707 dr->wIndex = 0;
708 dr->wValue = 0;
709 dr->wLength = __cpu_to_le16(skb->len);
710
711 pipe = usb_sndctrlpipe(data->udev, 0x00);
712
713 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
714 skb->data, skb->len, btusb_tx_complete, skb);
715
716 hdev->stat.cmd_tx++;
717 break;
718
719 case HCI_ACLDATA_PKT:
720 if (!data->bulk_tx_ep)
721 return -ENODEV;
722
723 urb = usb_alloc_urb(0, GFP_ATOMIC);
724 if (!urb)
725 return -ENOMEM;
726
727 pipe = usb_sndbulkpipe(data->udev,
728 data->bulk_tx_ep->bEndpointAddress);
729
730 usb_fill_bulk_urb(urb, data->udev, pipe,
731 skb->data, skb->len, btusb_tx_complete, skb);
732
733 hdev->stat.acl_tx++;
734 break;
735
736 case HCI_SCODATA_PKT:
737 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
738 return -ENODEV;
739
740 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
741 if (!urb)
742 return -ENOMEM;
743
744 pipe = usb_sndisocpipe(data->udev,
745 data->isoc_tx_ep->bEndpointAddress);
746
747 usb_fill_int_urb(urb, data->udev, pipe,
748 skb->data, skb->len, btusb_isoc_tx_complete,
749 skb, data->isoc_tx_ep->bInterval);
750
751 urb->transfer_flags = URB_ISO_ASAP;
752
753 __fill_isoc_descriptor(urb, skb->len,
754 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
755
756 hdev->stat.sco_tx++;
757 goto skip_waking;
758
759 default:
760 return -EILSEQ;
761 }
762
763 err = inc_tx(data);
764 if (err) {
765 usb_anchor_urb(urb, &data->deferred);
766 schedule_work(&data->waker);
767 err = 0;
768 goto done;
769 }
770
771 skip_waking:
772 usb_anchor_urb(urb, &data->tx_anchor);
773
774 err = usb_submit_urb(urb, GFP_ATOMIC);
775 if (err < 0) {
776 if (err != -EPERM && err != -ENODEV)
777 BT_ERR("%s urb %p submission failed (%d)",
778 hdev->name, urb, -err);
779 kfree(urb->setup_packet);
780 usb_unanchor_urb(urb);
781 } else {
782 usb_mark_last_busy(data->udev);
783 }
784
785 done:
786 usb_free_urb(urb);
787 return err;
788 }
789
790 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
791 {
792 struct btusb_data *data = hci_get_drvdata(hdev);
793
794 BT_DBG("%s evt %d", hdev->name, evt);
795
796 if (hdev->conn_hash.sco_num != data->sco_num) {
797 data->sco_num = hdev->conn_hash.sco_num;
798 schedule_work(&data->work);
799 }
800 }
801
802 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
803 {
804 struct btusb_data *data = hci_get_drvdata(hdev);
805 struct usb_interface *intf = data->isoc;
806 struct usb_endpoint_descriptor *ep_desc;
807 int i, err;
808
809 if (!data->isoc)
810 return -ENODEV;
811
812 err = usb_set_interface(data->udev, 1, altsetting);
813 if (err < 0) {
814 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
815 return err;
816 }
817
818 data->isoc_altsetting = altsetting;
819
820 data->isoc_tx_ep = NULL;
821 data->isoc_rx_ep = NULL;
822
823 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
824 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
825
826 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
827 data->isoc_tx_ep = ep_desc;
828 continue;
829 }
830
831 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
832 data->isoc_rx_ep = ep_desc;
833 continue;
834 }
835 }
836
837 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
838 BT_ERR("%s invalid SCO descriptors", hdev->name);
839 return -ENODEV;
840 }
841
842 return 0;
843 }
844
845 static void btusb_work(struct work_struct *work)
846 {
847 struct btusb_data *data = container_of(work, struct btusb_data, work);
848 struct hci_dev *hdev = data->hdev;
849 int err;
850
851 if (hdev->conn_hash.sco_num > 0) {
852 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
853 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
854 if (err < 0) {
855 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
856 usb_kill_anchored_urbs(&data->isoc_anchor);
857 return;
858 }
859
860 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
861 }
862 if (data->isoc_altsetting != 2) {
863 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
864 usb_kill_anchored_urbs(&data->isoc_anchor);
865
866 if (__set_isoc_interface(hdev, 2) < 0)
867 return;
868 }
869
870 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
871 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
872 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
873 else
874 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
875 }
876 } else {
877 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
878 usb_kill_anchored_urbs(&data->isoc_anchor);
879
880 __set_isoc_interface(hdev, 0);
881 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
882 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
883 }
884 }
885
886 static void btusb_waker(struct work_struct *work)
887 {
888 struct btusb_data *data = container_of(work, struct btusb_data, waker);
889 int err;
890
891 err = usb_autopm_get_interface(data->intf);
892 if (err < 0)
893 return;
894
895 usb_autopm_put_interface(data->intf);
896 }
897
898 static int btusb_probe(struct usb_interface *intf,
899 const struct usb_device_id *id)
900 {
901 struct usb_endpoint_descriptor *ep_desc;
902 struct btusb_data *data;
903 struct hci_dev *hdev;
904 int i, err;
905
906 BT_DBG("intf %p id %p", intf, id);
907
908 /* interface numbers are hardcoded in the spec */
909 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
910 return -ENODEV;
911
912 if (!id->driver_info) {
913 const struct usb_device_id *match;
914 match = usb_match_id(intf, blacklist_table);
915 if (match)
916 id = match;
917 }
918
919 if (id->driver_info == BTUSB_IGNORE)
920 return -ENODEV;
921
922 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
923 return -ENODEV;
924
925 if (ignore_csr && id->driver_info & BTUSB_CSR)
926 return -ENODEV;
927
928 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
929 return -ENODEV;
930
931 if (id->driver_info & BTUSB_ATH3012) {
932 struct usb_device *udev = interface_to_usbdev(intf);
933
934 /* Old firmware would otherwise let ath3k driver load
935 * patch and sysconfig files */
936 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
937 return -ENODEV;
938 }
939
940 data = kzalloc(sizeof(*data), GFP_KERNEL);
941 if (!data)
942 return -ENOMEM;
943
944 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
945 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
946
947 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
948 data->intr_ep = ep_desc;
949 continue;
950 }
951
952 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
953 data->bulk_tx_ep = ep_desc;
954 continue;
955 }
956
957 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
958 data->bulk_rx_ep = ep_desc;
959 continue;
960 }
961 }
962
963 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
964 kfree(data);
965 return -ENODEV;
966 }
967
968 data->cmdreq_type = USB_TYPE_CLASS;
969
970 data->udev = interface_to_usbdev(intf);
971 data->intf = intf;
972
973 spin_lock_init(&data->lock);
974
975 INIT_WORK(&data->work, btusb_work);
976 INIT_WORK(&data->waker, btusb_waker);
977 spin_lock_init(&data->txlock);
978
979 init_usb_anchor(&data->tx_anchor);
980 init_usb_anchor(&data->intr_anchor);
981 init_usb_anchor(&data->bulk_anchor);
982 init_usb_anchor(&data->isoc_anchor);
983 init_usb_anchor(&data->deferred);
984
985 hdev = hci_alloc_dev();
986 if (!hdev) {
987 kfree(data);
988 return -ENOMEM;
989 }
990
991 hdev->bus = HCI_USB;
992 hci_set_drvdata(hdev, data);
993
994 data->hdev = hdev;
995
996 SET_HCIDEV_DEV(hdev, &intf->dev);
997
998 hdev->open = btusb_open;
999 hdev->close = btusb_close;
1000 hdev->flush = btusb_flush;
1001 hdev->send = btusb_send_frame;
1002 hdev->notify = btusb_notify;
1003
1004 /* Interface numbers are hardcoded in the specification */
1005 data->isoc = usb_ifnum_to_if(data->udev, 1);
1006
1007 if (!reset)
1008 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1009
1010 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1011 if (!disable_scofix)
1012 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1013 }
1014
1015 if (id->driver_info & BTUSB_BROKEN_ISOC)
1016 data->isoc = NULL;
1017
1018 if (id->driver_info & BTUSB_DIGIANSWER) {
1019 data->cmdreq_type = USB_TYPE_VENDOR;
1020 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1021 }
1022
1023 if (id->driver_info & BTUSB_CSR) {
1024 struct usb_device *udev = data->udev;
1025
1026 /* Old firmware would otherwise execute USB reset */
1027 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1028 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1029 }
1030
1031 if (id->driver_info & BTUSB_SNIFFER) {
1032 struct usb_device *udev = data->udev;
1033
1034 /* New sniffer firmware has crippled HCI interface */
1035 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1036 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1037
1038 data->isoc = NULL;
1039 }
1040
1041 if (id->driver_info & BTUSB_BCM92035) {
1042 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1043 struct sk_buff *skb;
1044
1045 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1046 if (skb) {
1047 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1048 skb_queue_tail(&hdev->driver_init, skb);
1049 }
1050 }
1051
1052 if (data->isoc) {
1053 err = usb_driver_claim_interface(&btusb_driver,
1054 data->isoc, data);
1055 if (err < 0) {
1056 hci_free_dev(hdev);
1057 kfree(data);
1058 return err;
1059 }
1060 }
1061
1062 err = hci_register_dev(hdev);
1063 if (err < 0) {
1064 hci_free_dev(hdev);
1065 kfree(data);
1066 return err;
1067 }
1068
1069 usb_set_intfdata(intf, data);
1070
1071 return 0;
1072 }
1073
1074 static void btusb_disconnect(struct usb_interface *intf)
1075 {
1076 struct btusb_data *data = usb_get_intfdata(intf);
1077 struct hci_dev *hdev;
1078
1079 BT_DBG("intf %p", intf);
1080
1081 if (!data)
1082 return;
1083
1084 hdev = data->hdev;
1085 usb_set_intfdata(data->intf, NULL);
1086
1087 if (data->isoc)
1088 usb_set_intfdata(data->isoc, NULL);
1089
1090 hci_unregister_dev(hdev);
1091
1092 if (intf == data->isoc)
1093 usb_driver_release_interface(&btusb_driver, data->intf);
1094 else if (data->isoc)
1095 usb_driver_release_interface(&btusb_driver, data->isoc);
1096
1097 hci_free_dev(hdev);
1098 kfree(data);
1099 }
1100
1101 #ifdef CONFIG_PM
1102 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1103 {
1104 struct btusb_data *data = usb_get_intfdata(intf);
1105
1106 BT_DBG("intf %p", intf);
1107
1108 if (data->suspend_count++)
1109 return 0;
1110
1111 spin_lock_irq(&data->txlock);
1112 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1113 set_bit(BTUSB_SUSPENDING, &data->flags);
1114 spin_unlock_irq(&data->txlock);
1115 } else {
1116 spin_unlock_irq(&data->txlock);
1117 data->suspend_count--;
1118 return -EBUSY;
1119 }
1120
1121 cancel_work_sync(&data->work);
1122
1123 btusb_stop_traffic(data);
1124 usb_kill_anchored_urbs(&data->tx_anchor);
1125
1126 return 0;
1127 }
1128
1129 static void play_deferred(struct btusb_data *data)
1130 {
1131 struct urb *urb;
1132 int err;
1133
1134 while ((urb = usb_get_from_anchor(&data->deferred))) {
1135 err = usb_submit_urb(urb, GFP_ATOMIC);
1136 if (err < 0)
1137 break;
1138
1139 data->tx_in_flight++;
1140 }
1141 usb_scuttle_anchored_urbs(&data->deferred);
1142 }
1143
1144 static int btusb_resume(struct usb_interface *intf)
1145 {
1146 struct btusb_data *data = usb_get_intfdata(intf);
1147 struct hci_dev *hdev = data->hdev;
1148 int err = 0;
1149
1150 BT_DBG("intf %p", intf);
1151
1152 if (--data->suspend_count)
1153 return 0;
1154
1155 if (!test_bit(HCI_RUNNING, &hdev->flags))
1156 goto done;
1157
1158 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1159 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1160 if (err < 0) {
1161 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1162 goto failed;
1163 }
1164 }
1165
1166 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1167 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1168 if (err < 0) {
1169 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1170 goto failed;
1171 }
1172
1173 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1174 }
1175
1176 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1177 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1178 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1179 else
1180 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1181 }
1182
1183 spin_lock_irq(&data->txlock);
1184 play_deferred(data);
1185 clear_bit(BTUSB_SUSPENDING, &data->flags);
1186 spin_unlock_irq(&data->txlock);
1187 schedule_work(&data->work);
1188
1189 return 0;
1190
1191 failed:
1192 usb_scuttle_anchored_urbs(&data->deferred);
1193 done:
1194 spin_lock_irq(&data->txlock);
1195 clear_bit(BTUSB_SUSPENDING, &data->flags);
1196 spin_unlock_irq(&data->txlock);
1197
1198 return err;
1199 }
1200 #endif
1201
1202 static struct usb_driver btusb_driver = {
1203 .name = "btusb",
1204 .probe = btusb_probe,
1205 .disconnect = btusb_disconnect,
1206 #ifdef CONFIG_PM
1207 .suspend = btusb_suspend,
1208 .resume = btusb_resume,
1209 #endif
1210 .id_table = btusb_table,
1211 .supports_autosuspend = 1,
1212 };
1213
1214 module_usb_driver(btusb_driver);
1215
1216 module_param(ignore_dga, bool, 0644);
1217 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1218
1219 module_param(ignore_csr, bool, 0644);
1220 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1221
1222 module_param(ignore_sniffer, bool, 0644);
1223 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1224
1225 module_param(disable_scofix, bool, 0644);
1226 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1227
1228 module_param(force_scofix, bool, 0644);
1229 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1230
1231 module_param(reset, bool, 0644);
1232 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1233
1234 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1235 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1236 MODULE_VERSION(VERSION);
1237 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.058319 seconds and 6 git commands to generate.