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V4L/DVB (8757): v4l-dvb: fix a bunch of sparse warnings
[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, 0x2151), .driver_info = BTUSB_RESET },
106
107 /* IBM/Lenovo ThinkPad with Broadcom chip */
108 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
109 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
110
111 /* Targus ACB10US */
112 { USB_DEVICE(0x0a5c, 0x2100), .driver_info = BTUSB_RESET },
113
114 /* ANYCOM Bluetooth USB-200 and USB-250 */
115 { USB_DEVICE(0x0a5c, 0x2111), .driver_info = BTUSB_RESET },
116
117 /* HP laptop with Broadcom chip */
118 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
119
120 /* Dell laptop with Broadcom chip */
121 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
122
123 /* Dell Wireless 370 */
124 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
125
126 /* Dell Wireless 410 */
127 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
128
129 /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
130 { USB_DEVICE(0x045e, 0x009c), .driver_info = BTUSB_RESET },
131
132 /* Kensington Bluetooth USB adapter */
133 { USB_DEVICE(0x047d, 0x105d), .driver_info = BTUSB_RESET },
134 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
135
136 /* ISSC Bluetooth Adapter v3.1 */
137 { USB_DEVICE(0x1131, 0x1001), .driver_info = BTUSB_RESET },
138
139 /* RTX Telecom based adapters with buggy SCO support */
140 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
141 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
142
143 /* CONWISE Technology based adapters with buggy SCO support */
144 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
145
146 /* Belkin F8T012 and F8T013 devices */
147 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
148 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
149
150 /* Digianswer devices */
151 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
152 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
153
154 /* CSR BlueCore Bluetooth Sniffer */
155 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
156
157 /* Frontline ComProbe Bluetooth Sniffer */
158 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
159
160 { } /* Terminating entry */
161 };
162
163 #define BTUSB_MAX_ISOC_FRAMES 10
164
165 #define BTUSB_INTR_RUNNING 0
166 #define BTUSB_BULK_RUNNING 1
167 #define BTUSB_ISOC_RUNNING 2
168
169 struct btusb_data {
170 struct hci_dev *hdev;
171 struct usb_device *udev;
172 struct usb_interface *isoc;
173
174 spinlock_t lock;
175
176 unsigned long flags;
177
178 struct work_struct work;
179
180 struct usb_anchor tx_anchor;
181 struct usb_anchor intr_anchor;
182 struct usb_anchor bulk_anchor;
183 struct usb_anchor isoc_anchor;
184
185 struct usb_endpoint_descriptor *intr_ep;
186 struct usb_endpoint_descriptor *bulk_tx_ep;
187 struct usb_endpoint_descriptor *bulk_rx_ep;
188 struct usb_endpoint_descriptor *isoc_tx_ep;
189 struct usb_endpoint_descriptor *isoc_rx_ep;
190
191 int isoc_altsetting;
192 };
193
194 static void btusb_intr_complete(struct urb *urb)
195 {
196 struct hci_dev *hdev = urb->context;
197 struct btusb_data *data = hdev->driver_data;
198 int err;
199
200 BT_DBG("%s urb %p status %d count %d", hdev->name,
201 urb, urb->status, urb->actual_length);
202
203 if (!test_bit(HCI_RUNNING, &hdev->flags))
204 return;
205
206 if (urb->status == 0) {
207 hdev->stat.byte_rx += urb->actual_length;
208
209 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
210 urb->transfer_buffer,
211 urb->actual_length) < 0) {
212 BT_ERR("%s corrupted event packet", hdev->name);
213 hdev->stat.err_rx++;
214 }
215 }
216
217 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
218 return;
219
220 usb_anchor_urb(urb, &data->intr_anchor);
221
222 err = usb_submit_urb(urb, GFP_ATOMIC);
223 if (err < 0) {
224 BT_ERR("%s urb %p failed to resubmit (%d)",
225 hdev->name, urb, -err);
226 usb_unanchor_urb(urb);
227 }
228 }
229
230 static int btusb_submit_intr_urb(struct hci_dev *hdev)
231 {
232 struct btusb_data *data = hdev->driver_data;
233 struct urb *urb;
234 unsigned char *buf;
235 unsigned int pipe;
236 int err, size;
237
238 BT_DBG("%s", hdev->name);
239
240 if (!data->intr_ep)
241 return -ENODEV;
242
243 urb = usb_alloc_urb(0, GFP_ATOMIC);
244 if (!urb)
245 return -ENOMEM;
246
247 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
248
249 buf = kmalloc(size, GFP_ATOMIC);
250 if (!buf) {
251 usb_free_urb(urb);
252 return -ENOMEM;
253 }
254
255 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
256
257 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
258 btusb_intr_complete, hdev,
259 data->intr_ep->bInterval);
260
261 urb->transfer_flags |= URB_FREE_BUFFER;
262
263 usb_anchor_urb(urb, &data->intr_anchor);
264
265 err = usb_submit_urb(urb, GFP_ATOMIC);
266 if (err < 0) {
267 BT_ERR("%s urb %p submission failed (%d)",
268 hdev->name, urb, -err);
269 usb_unanchor_urb(urb);
270 kfree(buf);
271 }
272
273 usb_free_urb(urb);
274
275 return err;
276 }
277
278 static void btusb_bulk_complete(struct urb *urb)
279 {
280 struct hci_dev *hdev = urb->context;
281 struct btusb_data *data = hdev->driver_data;
282 int err;
283
284 BT_DBG("%s urb %p status %d count %d", hdev->name,
285 urb, urb->status, urb->actual_length);
286
287 if (!test_bit(HCI_RUNNING, &hdev->flags))
288 return;
289
290 if (urb->status == 0) {
291 hdev->stat.byte_rx += urb->actual_length;
292
293 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
294 urb->transfer_buffer,
295 urb->actual_length) < 0) {
296 BT_ERR("%s corrupted ACL packet", hdev->name);
297 hdev->stat.err_rx++;
298 }
299 }
300
301 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
302 return;
303
304 usb_anchor_urb(urb, &data->bulk_anchor);
305
306 err = usb_submit_urb(urb, GFP_ATOMIC);
307 if (err < 0) {
308 BT_ERR("%s urb %p failed to resubmit (%d)",
309 hdev->name, urb, -err);
310 usb_unanchor_urb(urb);
311 }
312 }
313
314 static int btusb_submit_bulk_urb(struct hci_dev *hdev)
315 {
316 struct btusb_data *data = hdev->driver_data;
317 struct urb *urb;
318 unsigned char *buf;
319 unsigned int pipe;
320 int err, size;
321
322 BT_DBG("%s", hdev->name);
323
324 if (!data->bulk_rx_ep)
325 return -ENODEV;
326
327 urb = usb_alloc_urb(0, GFP_KERNEL);
328 if (!urb)
329 return -ENOMEM;
330
331 size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
332
333 buf = kmalloc(size, GFP_KERNEL);
334 if (!buf) {
335 usb_free_urb(urb);
336 return -ENOMEM;
337 }
338
339 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
340
341 usb_fill_bulk_urb(urb, data->udev, pipe,
342 buf, size, btusb_bulk_complete, hdev);
343
344 urb->transfer_flags |= URB_FREE_BUFFER;
345
346 usb_anchor_urb(urb, &data->bulk_anchor);
347
348 err = usb_submit_urb(urb, GFP_KERNEL);
349 if (err < 0) {
350 BT_ERR("%s urb %p submission failed (%d)",
351 hdev->name, urb, -err);
352 usb_unanchor_urb(urb);
353 kfree(buf);
354 }
355
356 usb_free_urb(urb);
357
358 return err;
359 }
360
361 static void btusb_isoc_complete(struct urb *urb)
362 {
363 struct hci_dev *hdev = urb->context;
364 struct btusb_data *data = hdev->driver_data;
365 int i, err;
366
367 BT_DBG("%s urb %p status %d count %d", hdev->name,
368 urb, urb->status, urb->actual_length);
369
370 if (!test_bit(HCI_RUNNING, &hdev->flags))
371 return;
372
373 if (urb->status == 0) {
374 for (i = 0; i < urb->number_of_packets; i++) {
375 unsigned int offset = urb->iso_frame_desc[i].offset;
376 unsigned int length = urb->iso_frame_desc[i].actual_length;
377
378 if (urb->iso_frame_desc[i].status)
379 continue;
380
381 hdev->stat.byte_rx += length;
382
383 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
384 urb->transfer_buffer + offset,
385 length) < 0) {
386 BT_ERR("%s corrupted SCO packet", hdev->name);
387 hdev->stat.err_rx++;
388 }
389 }
390 }
391
392 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
393 return;
394
395 usb_anchor_urb(urb, &data->isoc_anchor);
396
397 err = usb_submit_urb(urb, GFP_ATOMIC);
398 if (err < 0) {
399 BT_ERR("%s urb %p failed to resubmit (%d)",
400 hdev->name, urb, -err);
401 usb_unanchor_urb(urb);
402 }
403 }
404
405 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
406 {
407 int i, offset = 0;
408
409 BT_DBG("len %d mtu %d", len, mtu);
410
411 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
412 i++, offset += mtu, len -= mtu) {
413 urb->iso_frame_desc[i].offset = offset;
414 urb->iso_frame_desc[i].length = mtu;
415 }
416
417 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
418 urb->iso_frame_desc[i].offset = offset;
419 urb->iso_frame_desc[i].length = len;
420 i++;
421 }
422
423 urb->number_of_packets = i;
424 }
425
426 static int btusb_submit_isoc_urb(struct hci_dev *hdev)
427 {
428 struct btusb_data *data = hdev->driver_data;
429 struct urb *urb;
430 unsigned char *buf;
431 unsigned int pipe;
432 int err, size;
433
434 BT_DBG("%s", hdev->name);
435
436 if (!data->isoc_rx_ep)
437 return -ENODEV;
438
439 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
440 if (!urb)
441 return -ENOMEM;
442
443 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
444 BTUSB_MAX_ISOC_FRAMES;
445
446 buf = kmalloc(size, GFP_KERNEL);
447 if (!buf) {
448 usb_free_urb(urb);
449 return -ENOMEM;
450 }
451
452 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
453
454 urb->dev = data->udev;
455 urb->pipe = pipe;
456 urb->context = hdev;
457 urb->complete = btusb_isoc_complete;
458 urb->interval = data->isoc_rx_ep->bInterval;
459
460 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
461 urb->transfer_buffer = buf;
462 urb->transfer_buffer_length = size;
463
464 __fill_isoc_descriptor(urb, size,
465 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
466
467 usb_anchor_urb(urb, &data->isoc_anchor);
468
469 err = usb_submit_urb(urb, GFP_KERNEL);
470 if (err < 0) {
471 BT_ERR("%s urb %p submission failed (%d)",
472 hdev->name, urb, -err);
473 usb_unanchor_urb(urb);
474 kfree(buf);
475 }
476
477 usb_free_urb(urb);
478
479 return err;
480 }
481
482 static void btusb_tx_complete(struct urb *urb)
483 {
484 struct sk_buff *skb = urb->context;
485 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
486
487 BT_DBG("%s urb %p status %d count %d", hdev->name,
488 urb, urb->status, urb->actual_length);
489
490 if (!test_bit(HCI_RUNNING, &hdev->flags))
491 goto done;
492
493 if (!urb->status)
494 hdev->stat.byte_tx += urb->transfer_buffer_length;
495 else
496 hdev->stat.err_tx++;
497
498 done:
499 kfree(urb->setup_packet);
500
501 kfree_skb(skb);
502 }
503
504 static int btusb_open(struct hci_dev *hdev)
505 {
506 struct btusb_data *data = hdev->driver_data;
507 int err;
508
509 BT_DBG("%s", hdev->name);
510
511 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
512 return 0;
513
514 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
515 return 0;
516
517 err = btusb_submit_intr_urb(hdev);
518 if (err < 0) {
519 clear_bit(BTUSB_INTR_RUNNING, &hdev->flags);
520 clear_bit(HCI_RUNNING, &hdev->flags);
521 }
522
523 return err;
524 }
525
526 static int btusb_close(struct hci_dev *hdev)
527 {
528 struct btusb_data *data = hdev->driver_data;
529
530 BT_DBG("%s", hdev->name);
531
532 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
533 return 0;
534
535 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
536 usb_kill_anchored_urbs(&data->intr_anchor);
537
538 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
539 usb_kill_anchored_urbs(&data->bulk_anchor);
540
541 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
542 usb_kill_anchored_urbs(&data->intr_anchor);
543
544 return 0;
545 }
546
547 static int btusb_flush(struct hci_dev *hdev)
548 {
549 struct btusb_data *data = hdev->driver_data;
550
551 BT_DBG("%s", hdev->name);
552
553 usb_kill_anchored_urbs(&data->tx_anchor);
554
555 return 0;
556 }
557
558 static int btusb_send_frame(struct sk_buff *skb)
559 {
560 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
561 struct btusb_data *data = hdev->driver_data;
562 struct usb_ctrlrequest *dr;
563 struct urb *urb;
564 unsigned int pipe;
565 int err;
566
567 BT_DBG("%s", hdev->name);
568
569 if (!test_bit(HCI_RUNNING, &hdev->flags))
570 return -EBUSY;
571
572 switch (bt_cb(skb)->pkt_type) {
573 case HCI_COMMAND_PKT:
574 urb = usb_alloc_urb(0, GFP_ATOMIC);
575 if (!urb)
576 return -ENOMEM;
577
578 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
579 if (!dr) {
580 usb_free_urb(urb);
581 return -ENOMEM;
582 }
583
584 dr->bRequestType = USB_TYPE_CLASS;
585 dr->bRequest = 0;
586 dr->wIndex = 0;
587 dr->wValue = 0;
588 dr->wLength = __cpu_to_le16(skb->len);
589
590 pipe = usb_sndctrlpipe(data->udev, 0x00);
591
592 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
593 skb->data, skb->len, btusb_tx_complete, skb);
594
595 hdev->stat.cmd_tx++;
596 break;
597
598 case HCI_ACLDATA_PKT:
599 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
600 return -ENODEV;
601
602 urb = usb_alloc_urb(0, GFP_ATOMIC);
603 if (!urb)
604 return -ENOMEM;
605
606 pipe = usb_sndbulkpipe(data->udev,
607 data->bulk_tx_ep->bEndpointAddress);
608
609 usb_fill_bulk_urb(urb, data->udev, pipe,
610 skb->data, skb->len, btusb_tx_complete, skb);
611
612 hdev->stat.acl_tx++;
613 break;
614
615 case HCI_SCODATA_PKT:
616 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
617 return -ENODEV;
618
619 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
620 if (!urb)
621 return -ENOMEM;
622
623 pipe = usb_sndisocpipe(data->udev,
624 data->isoc_tx_ep->bEndpointAddress);
625
626 urb->dev = data->udev;
627 urb->pipe = pipe;
628 urb->context = skb;
629 urb->complete = btusb_tx_complete;
630 urb->interval = data->isoc_tx_ep->bInterval;
631
632 urb->transfer_flags = URB_ISO_ASAP;
633 urb->transfer_buffer = skb->data;
634 urb->transfer_buffer_length = skb->len;
635
636 __fill_isoc_descriptor(urb, skb->len,
637 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
638
639 hdev->stat.sco_tx++;
640 break;
641
642 default:
643 return -EILSEQ;
644 }
645
646 usb_anchor_urb(urb, &data->tx_anchor);
647
648 err = usb_submit_urb(urb, GFP_ATOMIC);
649 if (err < 0) {
650 BT_ERR("%s urb %p submission failed", hdev->name, urb);
651 kfree(urb->setup_packet);
652 usb_unanchor_urb(urb);
653 }
654
655 usb_free_urb(urb);
656
657 return err;
658 }
659
660 static void btusb_destruct(struct hci_dev *hdev)
661 {
662 struct btusb_data *data = hdev->driver_data;
663
664 BT_DBG("%s", hdev->name);
665
666 kfree(data);
667 }
668
669 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
670 {
671 struct btusb_data *data = hdev->driver_data;
672
673 BT_DBG("%s evt %d", hdev->name, evt);
674
675 if (evt == HCI_NOTIFY_CONN_ADD || evt == HCI_NOTIFY_CONN_DEL)
676 schedule_work(&data->work);
677 }
678
679 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
680 {
681 struct btusb_data *data = hdev->driver_data;
682 struct usb_interface *intf = data->isoc;
683 struct usb_endpoint_descriptor *ep_desc;
684 int i, err;
685
686 if (!data->isoc)
687 return -ENODEV;
688
689 err = usb_set_interface(data->udev, 1, altsetting);
690 if (err < 0) {
691 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
692 return err;
693 }
694
695 data->isoc_altsetting = altsetting;
696
697 data->isoc_tx_ep = NULL;
698 data->isoc_rx_ep = NULL;
699
700 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
701 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
702
703 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
704 data->isoc_tx_ep = ep_desc;
705 continue;
706 }
707
708 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
709 data->isoc_rx_ep = ep_desc;
710 continue;
711 }
712 }
713
714 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
715 BT_ERR("%s invalid SCO descriptors", hdev->name);
716 return -ENODEV;
717 }
718
719 return 0;
720 }
721
722 static void btusb_work(struct work_struct *work)
723 {
724 struct btusb_data *data = container_of(work, struct btusb_data, work);
725 struct hci_dev *hdev = data->hdev;
726
727 if (hdev->conn_hash.acl_num > 0) {
728 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
729 if (btusb_submit_bulk_urb(hdev) < 0)
730 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
731 else
732 btusb_submit_bulk_urb(hdev);
733 }
734 } else {
735 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
736 usb_kill_anchored_urbs(&data->bulk_anchor);
737 }
738
739 if (hdev->conn_hash.sco_num > 0) {
740 if (data->isoc_altsetting != 2) {
741 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
742 usb_kill_anchored_urbs(&data->isoc_anchor);
743
744 if (__set_isoc_interface(hdev, 2) < 0)
745 return;
746 }
747
748 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
749 if (btusb_submit_isoc_urb(hdev) < 0)
750 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
751 else
752 btusb_submit_isoc_urb(hdev);
753 }
754 } else {
755 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
756 usb_kill_anchored_urbs(&data->isoc_anchor);
757
758 __set_isoc_interface(hdev, 0);
759 }
760 }
761
762 static int btusb_probe(struct usb_interface *intf,
763 const struct usb_device_id *id)
764 {
765 struct usb_endpoint_descriptor *ep_desc;
766 struct btusb_data *data;
767 struct hci_dev *hdev;
768 int i, err;
769
770 BT_DBG("intf %p id %p", intf, id);
771
772 /* interface numbers are hardcoded in the spec */
773 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
774 return -ENODEV;
775
776 if (!id->driver_info) {
777 const struct usb_device_id *match;
778 match = usb_match_id(intf, blacklist_table);
779 if (match)
780 id = match;
781 }
782
783 if (id->driver_info == BTUSB_IGNORE)
784 return -ENODEV;
785
786 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
787 return -ENODEV;
788
789 if (ignore_csr && id->driver_info & BTUSB_CSR)
790 return -ENODEV;
791
792 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
793 return -ENODEV;
794
795 data = kzalloc(sizeof(*data), GFP_KERNEL);
796 if (!data)
797 return -ENOMEM;
798
799 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
800 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
801
802 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
803 data->intr_ep = ep_desc;
804 continue;
805 }
806
807 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
808 data->bulk_tx_ep = ep_desc;
809 continue;
810 }
811
812 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
813 data->bulk_rx_ep = ep_desc;
814 continue;
815 }
816 }
817
818 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
819 kfree(data);
820 return -ENODEV;
821 }
822
823 data->udev = interface_to_usbdev(intf);
824
825 spin_lock_init(&data->lock);
826
827 INIT_WORK(&data->work, btusb_work);
828
829 init_usb_anchor(&data->tx_anchor);
830 init_usb_anchor(&data->intr_anchor);
831 init_usb_anchor(&data->bulk_anchor);
832 init_usb_anchor(&data->isoc_anchor);
833
834 hdev = hci_alloc_dev();
835 if (!hdev) {
836 kfree(data);
837 return -ENOMEM;
838 }
839
840 hdev->type = HCI_USB;
841 hdev->driver_data = data;
842
843 data->hdev = hdev;
844
845 SET_HCIDEV_DEV(hdev, &intf->dev);
846
847 hdev->open = btusb_open;
848 hdev->close = btusb_close;
849 hdev->flush = btusb_flush;
850 hdev->send = btusb_send_frame;
851 hdev->destruct = btusb_destruct;
852 hdev->notify = btusb_notify;
853
854 hdev->owner = THIS_MODULE;
855
856 /* interface numbers are hardcoded in the spec */
857 data->isoc = usb_ifnum_to_if(data->udev, 1);
858
859 if (reset || id->driver_info & BTUSB_RESET)
860 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
861
862 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
863 if (!disable_scofix)
864 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
865 }
866
867 if (id->driver_info & BTUSB_BROKEN_ISOC)
868 data->isoc = NULL;
869
870 if (id->driver_info & BTUSB_SNIFFER) {
871 struct usb_device *udev = data->udev;
872
873 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
874 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
875
876 data->isoc = NULL;
877 }
878
879 if (id->driver_info & BTUSB_BCM92035) {
880 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
881 struct sk_buff *skb;
882
883 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
884 if (skb) {
885 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
886 skb_queue_tail(&hdev->driver_init, skb);
887 }
888 }
889
890 if (data->isoc) {
891 err = usb_driver_claim_interface(&btusb_driver,
892 data->isoc, NULL);
893 if (err < 0) {
894 hci_free_dev(hdev);
895 kfree(data);
896 return err;
897 }
898 }
899
900 err = hci_register_dev(hdev);
901 if (err < 0) {
902 hci_free_dev(hdev);
903 kfree(data);
904 return err;
905 }
906
907 usb_set_intfdata(intf, data);
908
909 return 0;
910 }
911
912 static void btusb_disconnect(struct usb_interface *intf)
913 {
914 struct btusb_data *data = usb_get_intfdata(intf);
915 struct hci_dev *hdev;
916
917 BT_DBG("intf %p", intf);
918
919 if (!data)
920 return;
921
922 hdev = data->hdev;
923
924 if (data->isoc)
925 usb_driver_release_interface(&btusb_driver, data->isoc);
926
927 usb_set_intfdata(intf, NULL);
928
929 hci_unregister_dev(hdev);
930
931 hci_free_dev(hdev);
932 }
933
934 static struct usb_driver btusb_driver = {
935 .name = "btusb",
936 .probe = btusb_probe,
937 .disconnect = btusb_disconnect,
938 .id_table = btusb_table,
939 };
940
941 static int __init btusb_init(void)
942 {
943 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
944
945 return usb_register(&btusb_driver);
946 }
947
948 static void __exit btusb_exit(void)
949 {
950 usb_deregister(&btusb_driver);
951 }
952
953 module_init(btusb_init);
954 module_exit(btusb_exit);
955
956 module_param(ignore_dga, bool, 0644);
957 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
958
959 module_param(ignore_csr, bool, 0644);
960 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
961
962 module_param(ignore_sniffer, bool, 0644);
963 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
964
965 module_param(disable_scofix, bool, 0644);
966 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
967
968 module_param(force_scofix, bool, 0644);
969 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
970
971 module_param(reset, bool, 0644);
972 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
973
974 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
975 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
976 MODULE_VERSION(VERSION);
977 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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