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Bluetooth: Add suspend/resume support to btusb driver
[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 CONFIG_BT_HCIBTUSB_DEBUG
39 #ifndef CONFIG_BT_HCIBTUSB_DEBUG
40 #undef BT_DBG
41 #define BT_DBG(D...)
42 #endif
43
44 #define VERSION "0.3"
45
46 static int ignore_dga;
47 static int ignore_csr;
48 static int ignore_sniffer;
49 static int disable_scofix;
50 static int force_scofix;
51 static int reset;
52
53 static struct usb_driver btusb_driver;
54
55 #define BTUSB_IGNORE 0x01
56 #define BTUSB_RESET 0x02
57 #define BTUSB_DIGIANSWER 0x04
58 #define BTUSB_CSR 0x08
59 #define BTUSB_SNIFFER 0x10
60 #define BTUSB_BCM92035 0x20
61 #define BTUSB_BROKEN_ISOC 0x40
62 #define BTUSB_WRONG_SCO_MTU 0x80
63
64 static struct usb_device_id btusb_table[] = {
65 /* Generic Bluetooth USB device */
66 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
67
68 /* AVM BlueFRITZ! USB v2.0 */
69 { USB_DEVICE(0x057c, 0x3800) },
70
71 /* Bluetooth Ultraport Module from IBM */
72 { USB_DEVICE(0x04bf, 0x030a) },
73
74 /* ALPS Modules with non-standard id */
75 { USB_DEVICE(0x044e, 0x3001) },
76 { USB_DEVICE(0x044e, 0x3002) },
77
78 /* Ericsson with non-standard id */
79 { USB_DEVICE(0x0bdb, 0x1002) },
80
81 /* Canyon CN-BTU1 with HID interfaces */
82 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_RESET },
83
84 { } /* Terminating entry */
85 };
86
87 MODULE_DEVICE_TABLE(usb, btusb_table);
88
89 static struct usb_device_id blacklist_table[] = {
90 /* CSR BlueCore devices */
91 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
92
93 /* Broadcom BCM2033 without firmware */
94 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
95
96 /* Broadcom BCM2035 */
97 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
98 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
99
100 /* Broadcom BCM2045 */
101 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
102 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
103
104 /* Broadcom BCM2046 */
105 { USB_DEVICE(0x0a5c, 0x2146), .driver_info = BTUSB_RESET },
106 { USB_DEVICE(0x0a5c, 0x2151), .driver_info = BTUSB_RESET },
107
108 /* Apple MacBook Pro with Broadcom chip */
109 { USB_DEVICE(0x05ac, 0x820f), .driver_info = BTUSB_RESET },
110
111 /* IBM/Lenovo ThinkPad with Broadcom chip */
112 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
113 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
114
115 /* Targus ACB10US */
116 { USB_DEVICE(0x0a5c, 0x2100), .driver_info = BTUSB_RESET },
117 { USB_DEVICE(0x0a5c, 0x2154), .driver_info = BTUSB_RESET },
118
119 /* ANYCOM Bluetooth USB-200 and USB-250 */
120 { USB_DEVICE(0x0a5c, 0x2111), .driver_info = BTUSB_RESET },
121
122 /* HP laptop with Broadcom chip */
123 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
124
125 /* Dell laptop with Broadcom chip */
126 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
127
128 /* Dell Wireless 370 */
129 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
130
131 /* Dell Wireless 410 */
132 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
133
134 /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
135 { USB_DEVICE(0x045e, 0x009c), .driver_info = BTUSB_RESET },
136
137 /* Kensington Bluetooth USB adapter */
138 { USB_DEVICE(0x047d, 0x105d), .driver_info = BTUSB_RESET },
139 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
140
141 /* ISSC Bluetooth Adapter v3.1 */
142 { USB_DEVICE(0x1131, 0x1001), .driver_info = BTUSB_RESET },
143
144 /* RTX Telecom based adapters with buggy SCO support */
145 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
146 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
147
148 /* CONWISE Technology based adapters with buggy SCO support */
149 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
150
151 /* Belkin F8T012 and F8T013 devices */
152 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
153 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
154
155 /* Belkin F8T016 device */
156 { USB_DEVICE(0x050d, 0x016a), .driver_info = BTUSB_RESET },
157
158 /* Digianswer devices */
159 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
160 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
161
162 /* CSR BlueCore Bluetooth Sniffer */
163 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
164
165 /* Frontline ComProbe Bluetooth Sniffer */
166 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
167
168 { } /* Terminating entry */
169 };
170
171 #define BTUSB_MAX_ISOC_FRAMES 10
172
173 #define BTUSB_INTR_RUNNING 0
174 #define BTUSB_BULK_RUNNING 1
175 #define BTUSB_ISOC_RUNNING 2
176
177 struct btusb_data {
178 struct hci_dev *hdev;
179 struct usb_device *udev;
180 struct usb_interface *intf;
181 struct usb_interface *isoc;
182
183 spinlock_t lock;
184
185 unsigned long flags;
186
187 struct work_struct work;
188
189 struct usb_anchor tx_anchor;
190 struct usb_anchor intr_anchor;
191 struct usb_anchor bulk_anchor;
192 struct usb_anchor isoc_anchor;
193
194 struct usb_endpoint_descriptor *intr_ep;
195 struct usb_endpoint_descriptor *bulk_tx_ep;
196 struct usb_endpoint_descriptor *bulk_rx_ep;
197 struct usb_endpoint_descriptor *isoc_tx_ep;
198 struct usb_endpoint_descriptor *isoc_rx_ep;
199
200 int isoc_altsetting;
201 int suspend_count;
202 };
203
204 static void btusb_intr_complete(struct urb *urb)
205 {
206 struct hci_dev *hdev = urb->context;
207 struct btusb_data *data = hdev->driver_data;
208 int err;
209
210 BT_DBG("%s urb %p status %d count %d", hdev->name,
211 urb, urb->status, urb->actual_length);
212
213 if (!test_bit(HCI_RUNNING, &hdev->flags))
214 return;
215
216 if (urb->status == 0) {
217 hdev->stat.byte_rx += urb->actual_length;
218
219 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
220 urb->transfer_buffer,
221 urb->actual_length) < 0) {
222 BT_ERR("%s corrupted event packet", hdev->name);
223 hdev->stat.err_rx++;
224 }
225 }
226
227 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
228 return;
229
230 usb_anchor_urb(urb, &data->intr_anchor);
231
232 err = usb_submit_urb(urb, GFP_ATOMIC);
233 if (err < 0) {
234 BT_ERR("%s urb %p failed to resubmit (%d)",
235 hdev->name, urb, -err);
236 usb_unanchor_urb(urb);
237 }
238 }
239
240 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
241 {
242 struct btusb_data *data = hdev->driver_data;
243 struct urb *urb;
244 unsigned char *buf;
245 unsigned int pipe;
246 int err, size;
247
248 BT_DBG("%s", hdev->name);
249
250 if (!data->intr_ep)
251 return -ENODEV;
252
253 urb = usb_alloc_urb(0, mem_flags);
254 if (!urb)
255 return -ENOMEM;
256
257 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
258
259 buf = kmalloc(size, mem_flags);
260 if (!buf) {
261 usb_free_urb(urb);
262 return -ENOMEM;
263 }
264
265 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
266
267 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
268 btusb_intr_complete, hdev,
269 data->intr_ep->bInterval);
270
271 urb->transfer_flags |= URB_FREE_BUFFER;
272
273 usb_anchor_urb(urb, &data->intr_anchor);
274
275 err = usb_submit_urb(urb, mem_flags);
276 if (err < 0) {
277 BT_ERR("%s urb %p submission failed (%d)",
278 hdev->name, urb, -err);
279 usb_unanchor_urb(urb);
280 }
281
282 usb_free_urb(urb);
283
284 return err;
285 }
286
287 static void btusb_bulk_complete(struct urb *urb)
288 {
289 struct hci_dev *hdev = urb->context;
290 struct btusb_data *data = hdev->driver_data;
291 int err;
292
293 BT_DBG("%s urb %p status %d count %d", hdev->name,
294 urb, urb->status, urb->actual_length);
295
296 if (!test_bit(HCI_RUNNING, &hdev->flags))
297 return;
298
299 if (urb->status == 0) {
300 hdev->stat.byte_rx += urb->actual_length;
301
302 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
303 urb->transfer_buffer,
304 urb->actual_length) < 0) {
305 BT_ERR("%s corrupted ACL packet", hdev->name);
306 hdev->stat.err_rx++;
307 }
308 }
309
310 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
311 return;
312
313 usb_anchor_urb(urb, &data->bulk_anchor);
314
315 err = usb_submit_urb(urb, GFP_ATOMIC);
316 if (err < 0) {
317 BT_ERR("%s urb %p failed to resubmit (%d)",
318 hdev->name, urb, -err);
319 usb_unanchor_urb(urb);
320 }
321 }
322
323 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
324 {
325 struct btusb_data *data = hdev->driver_data;
326 struct urb *urb;
327 unsigned char *buf;
328 unsigned int pipe;
329 int err, size;
330
331 BT_DBG("%s", hdev->name);
332
333 if (!data->bulk_rx_ep)
334 return -ENODEV;
335
336 urb = usb_alloc_urb(0, mem_flags);
337 if (!urb)
338 return -ENOMEM;
339
340 size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
341
342 buf = kmalloc(size, mem_flags);
343 if (!buf) {
344 usb_free_urb(urb);
345 return -ENOMEM;
346 }
347
348 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
349
350 usb_fill_bulk_urb(urb, data->udev, pipe,
351 buf, size, btusb_bulk_complete, hdev);
352
353 urb->transfer_flags |= URB_FREE_BUFFER;
354
355 usb_anchor_urb(urb, &data->bulk_anchor);
356
357 err = usb_submit_urb(urb, mem_flags);
358 if (err < 0) {
359 BT_ERR("%s urb %p submission failed (%d)",
360 hdev->name, urb, -err);
361 usb_unanchor_urb(urb);
362 }
363
364 usb_free_urb(urb);
365
366 return err;
367 }
368
369 static void btusb_isoc_complete(struct urb *urb)
370 {
371 struct hci_dev *hdev = urb->context;
372 struct btusb_data *data = hdev->driver_data;
373 int i, err;
374
375 BT_DBG("%s urb %p status %d count %d", hdev->name,
376 urb, urb->status, urb->actual_length);
377
378 if (!test_bit(HCI_RUNNING, &hdev->flags))
379 return;
380
381 if (urb->status == 0) {
382 for (i = 0; i < urb->number_of_packets; i++) {
383 unsigned int offset = urb->iso_frame_desc[i].offset;
384 unsigned int length = urb->iso_frame_desc[i].actual_length;
385
386 if (urb->iso_frame_desc[i].status)
387 continue;
388
389 hdev->stat.byte_rx += length;
390
391 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
392 urb->transfer_buffer + offset,
393 length) < 0) {
394 BT_ERR("%s corrupted SCO packet", hdev->name);
395 hdev->stat.err_rx++;
396 }
397 }
398 }
399
400 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
401 return;
402
403 usb_anchor_urb(urb, &data->isoc_anchor);
404
405 err = usb_submit_urb(urb, GFP_ATOMIC);
406 if (err < 0) {
407 BT_ERR("%s urb %p failed to resubmit (%d)",
408 hdev->name, urb, -err);
409 usb_unanchor_urb(urb);
410 }
411 }
412
413 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
414 {
415 int i, offset = 0;
416
417 BT_DBG("len %d mtu %d", len, mtu);
418
419 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
420 i++, offset += mtu, len -= mtu) {
421 urb->iso_frame_desc[i].offset = offset;
422 urb->iso_frame_desc[i].length = mtu;
423 }
424
425 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
426 urb->iso_frame_desc[i].offset = offset;
427 urb->iso_frame_desc[i].length = len;
428 i++;
429 }
430
431 urb->number_of_packets = i;
432 }
433
434 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
435 {
436 struct btusb_data *data = hdev->driver_data;
437 struct urb *urb;
438 unsigned char *buf;
439 unsigned int pipe;
440 int err, size;
441
442 BT_DBG("%s", hdev->name);
443
444 if (!data->isoc_rx_ep)
445 return -ENODEV;
446
447 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
448 if (!urb)
449 return -ENOMEM;
450
451 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
452 BTUSB_MAX_ISOC_FRAMES;
453
454 buf = kmalloc(size, mem_flags);
455 if (!buf) {
456 usb_free_urb(urb);
457 return -ENOMEM;
458 }
459
460 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
461
462 urb->dev = data->udev;
463 urb->pipe = pipe;
464 urb->context = hdev;
465 urb->complete = btusb_isoc_complete;
466 urb->interval = data->isoc_rx_ep->bInterval;
467
468 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
469 urb->transfer_buffer = buf;
470 urb->transfer_buffer_length = size;
471
472 __fill_isoc_descriptor(urb, size,
473 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
474
475 usb_anchor_urb(urb, &data->isoc_anchor);
476
477 err = usb_submit_urb(urb, mem_flags);
478 if (err < 0) {
479 BT_ERR("%s urb %p submission failed (%d)",
480 hdev->name, urb, -err);
481 usb_unanchor_urb(urb);
482 }
483
484 usb_free_urb(urb);
485
486 return err;
487 }
488
489 static void btusb_tx_complete(struct urb *urb)
490 {
491 struct sk_buff *skb = urb->context;
492 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
493
494 BT_DBG("%s urb %p status %d count %d", hdev->name,
495 urb, urb->status, urb->actual_length);
496
497 if (!test_bit(HCI_RUNNING, &hdev->flags))
498 goto done;
499
500 if (!urb->status)
501 hdev->stat.byte_tx += urb->transfer_buffer_length;
502 else
503 hdev->stat.err_tx++;
504
505 done:
506 kfree(urb->setup_packet);
507
508 kfree_skb(skb);
509 }
510
511 static int btusb_open(struct hci_dev *hdev)
512 {
513 struct btusb_data *data = hdev->driver_data;
514 int err;
515
516 BT_DBG("%s", hdev->name);
517
518 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
519 return 0;
520
521 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
522 return 0;
523
524 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
525 if (err < 0) {
526 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
527 clear_bit(HCI_RUNNING, &hdev->flags);
528 }
529
530 return err;
531 }
532
533 static int btusb_close(struct hci_dev *hdev)
534 {
535 struct btusb_data *data = hdev->driver_data;
536
537 BT_DBG("%s", hdev->name);
538
539 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
540 return 0;
541
542 cancel_work_sync(&data->work);
543
544 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
545 usb_kill_anchored_urbs(&data->isoc_anchor);
546
547 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
548 usb_kill_anchored_urbs(&data->bulk_anchor);
549
550 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
551 usb_kill_anchored_urbs(&data->intr_anchor);
552
553 return 0;
554 }
555
556 static int btusb_flush(struct hci_dev *hdev)
557 {
558 struct btusb_data *data = hdev->driver_data;
559
560 BT_DBG("%s", hdev->name);
561
562 usb_kill_anchored_urbs(&data->tx_anchor);
563
564 return 0;
565 }
566
567 static int btusb_send_frame(struct sk_buff *skb)
568 {
569 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
570 struct btusb_data *data = hdev->driver_data;
571 struct usb_ctrlrequest *dr;
572 struct urb *urb;
573 unsigned int pipe;
574 int err;
575
576 BT_DBG("%s", hdev->name);
577
578 if (!test_bit(HCI_RUNNING, &hdev->flags))
579 return -EBUSY;
580
581 switch (bt_cb(skb)->pkt_type) {
582 case HCI_COMMAND_PKT:
583 urb = usb_alloc_urb(0, GFP_ATOMIC);
584 if (!urb)
585 return -ENOMEM;
586
587 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
588 if (!dr) {
589 usb_free_urb(urb);
590 return -ENOMEM;
591 }
592
593 dr->bRequestType = USB_TYPE_CLASS;
594 dr->bRequest = 0;
595 dr->wIndex = 0;
596 dr->wValue = 0;
597 dr->wLength = __cpu_to_le16(skb->len);
598
599 pipe = usb_sndctrlpipe(data->udev, 0x00);
600
601 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
602 skb->data, skb->len, btusb_tx_complete, skb);
603
604 hdev->stat.cmd_tx++;
605 break;
606
607 case HCI_ACLDATA_PKT:
608 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
609 return -ENODEV;
610
611 urb = usb_alloc_urb(0, GFP_ATOMIC);
612 if (!urb)
613 return -ENOMEM;
614
615 pipe = usb_sndbulkpipe(data->udev,
616 data->bulk_tx_ep->bEndpointAddress);
617
618 usb_fill_bulk_urb(urb, data->udev, pipe,
619 skb->data, skb->len, btusb_tx_complete, skb);
620
621 hdev->stat.acl_tx++;
622 break;
623
624 case HCI_SCODATA_PKT:
625 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
626 return -ENODEV;
627
628 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
629 if (!urb)
630 return -ENOMEM;
631
632 pipe = usb_sndisocpipe(data->udev,
633 data->isoc_tx_ep->bEndpointAddress);
634
635 urb->dev = data->udev;
636 urb->pipe = pipe;
637 urb->context = skb;
638 urb->complete = btusb_tx_complete;
639 urb->interval = data->isoc_tx_ep->bInterval;
640
641 urb->transfer_flags = URB_ISO_ASAP;
642 urb->transfer_buffer = skb->data;
643 urb->transfer_buffer_length = skb->len;
644
645 __fill_isoc_descriptor(urb, skb->len,
646 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
647
648 hdev->stat.sco_tx++;
649 break;
650
651 default:
652 return -EILSEQ;
653 }
654
655 usb_anchor_urb(urb, &data->tx_anchor);
656
657 err = usb_submit_urb(urb, GFP_ATOMIC);
658 if (err < 0) {
659 BT_ERR("%s urb %p submission failed", hdev->name, urb);
660 kfree(urb->setup_packet);
661 usb_unanchor_urb(urb);
662 }
663
664 usb_free_urb(urb);
665
666 return err;
667 }
668
669 static void btusb_destruct(struct hci_dev *hdev)
670 {
671 struct btusb_data *data = hdev->driver_data;
672
673 BT_DBG("%s", hdev->name);
674
675 kfree(data);
676 }
677
678 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
679 {
680 struct btusb_data *data = hdev->driver_data;
681
682 BT_DBG("%s evt %d", hdev->name, evt);
683
684 if (hdev->conn_hash.acl_num > 0) {
685 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
686 if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
687 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
688 else
689 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
690 }
691 } else {
692 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
693 usb_unlink_anchored_urbs(&data->bulk_anchor);
694 }
695
696 schedule_work(&data->work);
697 }
698
699 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
700 {
701 struct btusb_data *data = hdev->driver_data;
702 struct usb_interface *intf = data->isoc;
703 struct usb_endpoint_descriptor *ep_desc;
704 int i, err;
705
706 if (!data->isoc)
707 return -ENODEV;
708
709 err = usb_set_interface(data->udev, 1, altsetting);
710 if (err < 0) {
711 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
712 return err;
713 }
714
715 data->isoc_altsetting = altsetting;
716
717 data->isoc_tx_ep = NULL;
718 data->isoc_rx_ep = NULL;
719
720 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
721 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
722
723 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
724 data->isoc_tx_ep = ep_desc;
725 continue;
726 }
727
728 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
729 data->isoc_rx_ep = ep_desc;
730 continue;
731 }
732 }
733
734 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
735 BT_ERR("%s invalid SCO descriptors", hdev->name);
736 return -ENODEV;
737 }
738
739 return 0;
740 }
741
742 static void btusb_work(struct work_struct *work)
743 {
744 struct btusb_data *data = container_of(work, struct btusb_data, work);
745 struct hci_dev *hdev = data->hdev;
746
747 if (hdev->conn_hash.sco_num > 0) {
748 if (data->isoc_altsetting != 2) {
749 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
750 usb_kill_anchored_urbs(&data->isoc_anchor);
751
752 if (__set_isoc_interface(hdev, 2) < 0)
753 return;
754 }
755
756 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
757 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
758 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
759 else
760 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
761 }
762 } else {
763 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
764 usb_kill_anchored_urbs(&data->isoc_anchor);
765
766 __set_isoc_interface(hdev, 0);
767 }
768 }
769
770 static int btusb_probe(struct usb_interface *intf,
771 const struct usb_device_id *id)
772 {
773 struct usb_endpoint_descriptor *ep_desc;
774 struct btusb_data *data;
775 struct hci_dev *hdev;
776 int i, err;
777
778 BT_DBG("intf %p id %p", intf, id);
779
780 /* interface numbers are hardcoded in the spec */
781 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
782 return -ENODEV;
783
784 if (!id->driver_info) {
785 const struct usb_device_id *match;
786 match = usb_match_id(intf, blacklist_table);
787 if (match)
788 id = match;
789 }
790
791 if (id->driver_info == BTUSB_IGNORE)
792 return -ENODEV;
793
794 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
795 return -ENODEV;
796
797 if (ignore_csr && id->driver_info & BTUSB_CSR)
798 return -ENODEV;
799
800 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
801 return -ENODEV;
802
803 data = kzalloc(sizeof(*data), GFP_KERNEL);
804 if (!data)
805 return -ENOMEM;
806
807 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
808 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
809
810 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
811 data->intr_ep = ep_desc;
812 continue;
813 }
814
815 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
816 data->bulk_tx_ep = ep_desc;
817 continue;
818 }
819
820 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
821 data->bulk_rx_ep = ep_desc;
822 continue;
823 }
824 }
825
826 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
827 kfree(data);
828 return -ENODEV;
829 }
830
831 data->udev = interface_to_usbdev(intf);
832 data->intf = intf;
833
834 spin_lock_init(&data->lock);
835
836 INIT_WORK(&data->work, btusb_work);
837
838 init_usb_anchor(&data->tx_anchor);
839 init_usb_anchor(&data->intr_anchor);
840 init_usb_anchor(&data->bulk_anchor);
841 init_usb_anchor(&data->isoc_anchor);
842
843 hdev = hci_alloc_dev();
844 if (!hdev) {
845 kfree(data);
846 return -ENOMEM;
847 }
848
849 hdev->type = HCI_USB;
850 hdev->driver_data = data;
851
852 data->hdev = hdev;
853
854 SET_HCIDEV_DEV(hdev, &intf->dev);
855
856 hdev->open = btusb_open;
857 hdev->close = btusb_close;
858 hdev->flush = btusb_flush;
859 hdev->send = btusb_send_frame;
860 hdev->destruct = btusb_destruct;
861 hdev->notify = btusb_notify;
862
863 hdev->owner = THIS_MODULE;
864
865 /* interface numbers are hardcoded in the spec */
866 data->isoc = usb_ifnum_to_if(data->udev, 1);
867
868 if (reset || id->driver_info & BTUSB_RESET)
869 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
870
871 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
872 if (!disable_scofix)
873 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
874 }
875
876 if (id->driver_info & BTUSB_BROKEN_ISOC)
877 data->isoc = NULL;
878
879 if (id->driver_info & BTUSB_SNIFFER) {
880 struct usb_device *udev = data->udev;
881
882 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
883 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
884
885 data->isoc = NULL;
886 }
887
888 if (id->driver_info & BTUSB_BCM92035) {
889 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
890 struct sk_buff *skb;
891
892 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
893 if (skb) {
894 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
895 skb_queue_tail(&hdev->driver_init, skb);
896 }
897 }
898
899 if (data->isoc) {
900 err = usb_driver_claim_interface(&btusb_driver,
901 data->isoc, data);
902 if (err < 0) {
903 hci_free_dev(hdev);
904 kfree(data);
905 return err;
906 }
907 }
908
909 err = hci_register_dev(hdev);
910 if (err < 0) {
911 hci_free_dev(hdev);
912 kfree(data);
913 return err;
914 }
915
916 usb_set_intfdata(intf, data);
917
918 return 0;
919 }
920
921 static void btusb_disconnect(struct usb_interface *intf)
922 {
923 struct btusb_data *data = usb_get_intfdata(intf);
924 struct hci_dev *hdev;
925
926 BT_DBG("intf %p", intf);
927
928 if (!data)
929 return;
930
931 hdev = data->hdev;
932
933 __hci_dev_hold(hdev);
934
935 usb_set_intfdata(data->intf, NULL);
936
937 if (data->isoc)
938 usb_set_intfdata(data->isoc, NULL);
939
940 hci_unregister_dev(hdev);
941
942 if (intf == data->isoc)
943 usb_driver_release_interface(&btusb_driver, data->intf);
944 else if (data->isoc)
945 usb_driver_release_interface(&btusb_driver, data->isoc);
946
947 __hci_dev_put(hdev);
948
949 hci_free_dev(hdev);
950 }
951
952 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
953 {
954 struct btusb_data *data = usb_get_intfdata(intf);
955
956 BT_DBG("intf %p", intf);
957
958 if (data->suspend_count++)
959 return 0;
960
961 cancel_work_sync(&data->work);
962
963 usb_kill_anchored_urbs(&data->tx_anchor);
964
965 usb_kill_anchored_urbs(&data->isoc_anchor);
966 usb_kill_anchored_urbs(&data->bulk_anchor);
967 usb_kill_anchored_urbs(&data->intr_anchor);
968
969 return 0;
970 }
971
972 static int btusb_resume(struct usb_interface *intf)
973 {
974 struct btusb_data *data = usb_get_intfdata(intf);
975 struct hci_dev *hdev = data->hdev;
976 int err;
977
978 BT_DBG("intf %p", intf);
979
980 if (--data->suspend_count)
981 return 0;
982
983 if (!test_bit(HCI_RUNNING, &hdev->flags))
984 return 0;
985
986 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
987 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
988 if (err < 0) {
989 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
990 return err;
991 }
992 }
993
994 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
995 if (btusb_submit_bulk_urb(hdev, GFP_NOIO) < 0)
996 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
997 else
998 btusb_submit_bulk_urb(hdev, GFP_NOIO);
999 }
1000
1001 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1002 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1003 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1004 else
1005 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1006 }
1007
1008 return 0;
1009 }
1010
1011 static struct usb_driver btusb_driver = {
1012 .name = "btusb",
1013 .probe = btusb_probe,
1014 .disconnect = btusb_disconnect,
1015 .suspend = btusb_suspend,
1016 .resume = btusb_resume,
1017 .id_table = btusb_table,
1018 };
1019
1020 static int __init btusb_init(void)
1021 {
1022 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1023
1024 return usb_register(&btusb_driver);
1025 }
1026
1027 static void __exit btusb_exit(void)
1028 {
1029 usb_deregister(&btusb_driver);
1030 }
1031
1032 module_init(btusb_init);
1033 module_exit(btusb_exit);
1034
1035 module_param(ignore_dga, bool, 0644);
1036 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1037
1038 module_param(ignore_csr, bool, 0644);
1039 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1040
1041 module_param(ignore_sniffer, bool, 0644);
1042 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1043
1044 module_param(disable_scofix, bool, 0644);
1045 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1046
1047 module_param(force_scofix, bool, 0644);
1048 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1049
1050 module_param(reset, bool, 0644);
1051 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1052
1053 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1054 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1055 MODULE_VERSION(VERSION);
1056 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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