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 "0.5"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE 0x01
51 #define BTUSB_DIGIANSWER 0x02
52 #define BTUSB_CSR 0x04
53 #define BTUSB_SNIFFER 0x08
54 #define BTUSB_BCM92035 0x10
55 #define BTUSB_BROKEN_ISOC 0x20
56 #define BTUSB_WRONG_SCO_MTU 0x40
57
58 static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62 /* AVM BlueFRITZ! USB v2.0 */
63 { USB_DEVICE(0x057c, 0x3800) },
64
65 /* Bluetooth Ultraport Module from IBM */
66 { USB_DEVICE(0x04bf, 0x030a) },
67
68 /* ALPS Modules with non-standard id */
69 { USB_DEVICE(0x044e, 0x3001) },
70 { USB_DEVICE(0x044e, 0x3002) },
71
72 /* Ericsson with non-standard id */
73 { USB_DEVICE(0x0bdb, 0x1002) },
74
75 /* Canyon CN-BTU1 with HID interfaces */
76 { USB_DEVICE(0x0c10, 0x0000) },
77
78 { } /* Terminating entry */
79 };
80
81 MODULE_DEVICE_TABLE(usb, btusb_table);
82
83 static struct usb_device_id blacklist_table[] = {
84 /* CSR BlueCore devices */
85 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
86
87 /* Broadcom BCM2033 without firmware */
88 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
89
90 /* Broadcom BCM2035 */
91 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
92 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
93 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
94
95 /* Broadcom BCM2045 */
96 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
97 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
98
99 /* IBM/Lenovo ThinkPad with Broadcom chip */
100 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
101 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
102
103 /* HP laptop with Broadcom chip */
104 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106 /* Dell laptop with Broadcom chip */
107 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109 /* Dell Wireless 370 and 410 devices */
110 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
111 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
112
113 /* Belkin F8T012 and F8T013 devices */
114 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
115 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
116
117 /* Asus WL-BTD202 device */
118 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120 /* Kensington Bluetooth USB adapter */
121 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123 /* RTX Telecom based adapters with buggy SCO support */
124 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
125 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
126
127 /* CONWISE Technology based adapters with buggy SCO support */
128 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
129
130 /* Digianswer devices */
131 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
132 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
133
134 /* CSR BlueCore Bluetooth Sniffer */
135 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
136
137 /* Frontline ComProbe Bluetooth Sniffer */
138 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140 { } /* Terminating entry */
141 };
142
143 #define BTUSB_MAX_ISOC_FRAMES 10
144
145 #define BTUSB_INTR_RUNNING 0
146 #define BTUSB_BULK_RUNNING 1
147 #define BTUSB_ISOC_RUNNING 2
148
149 struct btusb_data {
150 struct hci_dev *hdev;
151 struct usb_device *udev;
152 struct usb_interface *intf;
153 struct usb_interface *isoc;
154
155 spinlock_t lock;
156
157 unsigned long flags;
158
159 struct work_struct work;
160
161 struct usb_anchor tx_anchor;
162 struct usb_anchor intr_anchor;
163 struct usb_anchor bulk_anchor;
164 struct usb_anchor isoc_anchor;
165
166 struct usb_endpoint_descriptor *intr_ep;
167 struct usb_endpoint_descriptor *bulk_tx_ep;
168 struct usb_endpoint_descriptor *bulk_rx_ep;
169 struct usb_endpoint_descriptor *isoc_tx_ep;
170 struct usb_endpoint_descriptor *isoc_rx_ep;
171
172 __u8 cmdreq_type;
173
174 unsigned int sco_num;
175 int isoc_altsetting;
176 int suspend_count;
177 };
178
179 static void btusb_intr_complete(struct urb *urb)
180 {
181 struct hci_dev *hdev = urb->context;
182 struct btusb_data *data = hdev->driver_data;
183 int err;
184
185 BT_DBG("%s urb %p status %d count %d", hdev->name,
186 urb, urb->status, urb->actual_length);
187
188 if (!test_bit(HCI_RUNNING, &hdev->flags))
189 return;
190
191 if (urb->status == 0) {
192 hdev->stat.byte_rx += urb->actual_length;
193
194 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
195 urb->transfer_buffer,
196 urb->actual_length) < 0) {
197 BT_ERR("%s corrupted event packet", hdev->name);
198 hdev->stat.err_rx++;
199 }
200 }
201
202 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
203 return;
204
205 usb_anchor_urb(urb, &data->intr_anchor);
206
207 err = usb_submit_urb(urb, GFP_ATOMIC);
208 if (err < 0) {
209 BT_ERR("%s urb %p failed to resubmit (%d)",
210 hdev->name, urb, -err);
211 usb_unanchor_urb(urb);
212 }
213 }
214
215 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
216 {
217 struct btusb_data *data = hdev->driver_data;
218 struct urb *urb;
219 unsigned char *buf;
220 unsigned int pipe;
221 int err, size;
222
223 BT_DBG("%s", hdev->name);
224
225 if (!data->intr_ep)
226 return -ENODEV;
227
228 urb = usb_alloc_urb(0, mem_flags);
229 if (!urb)
230 return -ENOMEM;
231
232 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
233
234 buf = kmalloc(size, mem_flags);
235 if (!buf) {
236 usb_free_urb(urb);
237 return -ENOMEM;
238 }
239
240 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
241
242 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
243 btusb_intr_complete, hdev,
244 data->intr_ep->bInterval);
245
246 urb->transfer_flags |= URB_FREE_BUFFER;
247
248 usb_anchor_urb(urb, &data->intr_anchor);
249
250 err = usb_submit_urb(urb, mem_flags);
251 if (err < 0) {
252 BT_ERR("%s urb %p submission failed (%d)",
253 hdev->name, urb, -err);
254 usb_unanchor_urb(urb);
255 }
256
257 usb_free_urb(urb);
258
259 return err;
260 }
261
262 static void btusb_bulk_complete(struct urb *urb)
263 {
264 struct hci_dev *hdev = urb->context;
265 struct btusb_data *data = hdev->driver_data;
266 int err;
267
268 BT_DBG("%s urb %p status %d count %d", hdev->name,
269 urb, urb->status, urb->actual_length);
270
271 if (!test_bit(HCI_RUNNING, &hdev->flags))
272 return;
273
274 if (urb->status == 0) {
275 hdev->stat.byte_rx += urb->actual_length;
276
277 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
278 urb->transfer_buffer,
279 urb->actual_length) < 0) {
280 BT_ERR("%s corrupted ACL packet", hdev->name);
281 hdev->stat.err_rx++;
282 }
283 }
284
285 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
286 return;
287
288 usb_anchor_urb(urb, &data->bulk_anchor);
289
290 err = usb_submit_urb(urb, GFP_ATOMIC);
291 if (err < 0) {
292 BT_ERR("%s urb %p failed to resubmit (%d)",
293 hdev->name, urb, -err);
294 usb_unanchor_urb(urb);
295 }
296 }
297
298 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
299 {
300 struct btusb_data *data = hdev->driver_data;
301 struct urb *urb;
302 unsigned char *buf;
303 unsigned int pipe;
304 int err, size;
305
306 BT_DBG("%s", hdev->name);
307
308 if (!data->bulk_rx_ep)
309 return -ENODEV;
310
311 urb = usb_alloc_urb(0, mem_flags);
312 if (!urb)
313 return -ENOMEM;
314
315 size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
316
317 buf = kmalloc(size, mem_flags);
318 if (!buf) {
319 usb_free_urb(urb);
320 return -ENOMEM;
321 }
322
323 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
324
325 usb_fill_bulk_urb(urb, data->udev, pipe,
326 buf, size, btusb_bulk_complete, hdev);
327
328 urb->transfer_flags |= URB_FREE_BUFFER;
329
330 usb_anchor_urb(urb, &data->bulk_anchor);
331
332 err = usb_submit_urb(urb, mem_flags);
333 if (err < 0) {
334 BT_ERR("%s urb %p submission failed (%d)",
335 hdev->name, urb, -err);
336 usb_unanchor_urb(urb);
337 }
338
339 usb_free_urb(urb);
340
341 return err;
342 }
343
344 static void btusb_isoc_complete(struct urb *urb)
345 {
346 struct hci_dev *hdev = urb->context;
347 struct btusb_data *data = hdev->driver_data;
348 int i, err;
349
350 BT_DBG("%s urb %p status %d count %d", hdev->name,
351 urb, urb->status, urb->actual_length);
352
353 if (!test_bit(HCI_RUNNING, &hdev->flags))
354 return;
355
356 if (urb->status == 0) {
357 for (i = 0; i < urb->number_of_packets; i++) {
358 unsigned int offset = urb->iso_frame_desc[i].offset;
359 unsigned int length = urb->iso_frame_desc[i].actual_length;
360
361 if (urb->iso_frame_desc[i].status)
362 continue;
363
364 hdev->stat.byte_rx += length;
365
366 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
367 urb->transfer_buffer + offset,
368 length) < 0) {
369 BT_ERR("%s corrupted SCO packet", hdev->name);
370 hdev->stat.err_rx++;
371 }
372 }
373 }
374
375 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
376 return;
377
378 usb_anchor_urb(urb, &data->isoc_anchor);
379
380 err = usb_submit_urb(urb, GFP_ATOMIC);
381 if (err < 0) {
382 BT_ERR("%s urb %p failed to resubmit (%d)",
383 hdev->name, urb, -err);
384 usb_unanchor_urb(urb);
385 }
386 }
387
388 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
389 {
390 int i, offset = 0;
391
392 BT_DBG("len %d mtu %d", len, mtu);
393
394 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
395 i++, offset += mtu, len -= mtu) {
396 urb->iso_frame_desc[i].offset = offset;
397 urb->iso_frame_desc[i].length = mtu;
398 }
399
400 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
401 urb->iso_frame_desc[i].offset = offset;
402 urb->iso_frame_desc[i].length = len;
403 i++;
404 }
405
406 urb->number_of_packets = i;
407 }
408
409 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
410 {
411 struct btusb_data *data = hdev->driver_data;
412 struct urb *urb;
413 unsigned char *buf;
414 unsigned int pipe;
415 int err, size;
416
417 BT_DBG("%s", hdev->name);
418
419 if (!data->isoc_rx_ep)
420 return -ENODEV;
421
422 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
423 if (!urb)
424 return -ENOMEM;
425
426 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
427 BTUSB_MAX_ISOC_FRAMES;
428
429 buf = kmalloc(size, mem_flags);
430 if (!buf) {
431 usb_free_urb(urb);
432 return -ENOMEM;
433 }
434
435 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
436
437 urb->dev = data->udev;
438 urb->pipe = pipe;
439 urb->context = hdev;
440 urb->complete = btusb_isoc_complete;
441 urb->interval = data->isoc_rx_ep->bInterval;
442
443 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
444 urb->transfer_buffer = buf;
445 urb->transfer_buffer_length = size;
446
447 __fill_isoc_descriptor(urb, size,
448 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
449
450 usb_anchor_urb(urb, &data->isoc_anchor);
451
452 err = usb_submit_urb(urb, mem_flags);
453 if (err < 0) {
454 BT_ERR("%s urb %p submission failed (%d)",
455 hdev->name, urb, -err);
456 usb_unanchor_urb(urb);
457 }
458
459 usb_free_urb(urb);
460
461 return err;
462 }
463
464 static void btusb_tx_complete(struct urb *urb)
465 {
466 struct sk_buff *skb = urb->context;
467 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
468
469 BT_DBG("%s urb %p status %d count %d", hdev->name,
470 urb, urb->status, urb->actual_length);
471
472 if (!test_bit(HCI_RUNNING, &hdev->flags))
473 goto done;
474
475 if (!urb->status)
476 hdev->stat.byte_tx += urb->transfer_buffer_length;
477 else
478 hdev->stat.err_tx++;
479
480 done:
481 kfree(urb->setup_packet);
482
483 kfree_skb(skb);
484 }
485
486 static int btusb_open(struct hci_dev *hdev)
487 {
488 struct btusb_data *data = hdev->driver_data;
489 int err;
490
491 BT_DBG("%s", hdev->name);
492
493 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
494 return 0;
495
496 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
497 return 0;
498
499 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
500 if (err < 0)
501 goto failed;
502
503 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
504 if (err < 0) {
505 usb_kill_anchored_urbs(&data->intr_anchor);
506 goto failed;
507 }
508
509 set_bit(BTUSB_BULK_RUNNING, &data->flags);
510 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
511
512 return 0;
513
514 failed:
515 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
516 clear_bit(HCI_RUNNING, &hdev->flags);
517 return err;
518 }
519
520 static int btusb_close(struct hci_dev *hdev)
521 {
522 struct btusb_data *data = hdev->driver_data;
523
524 BT_DBG("%s", hdev->name);
525
526 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
527 return 0;
528
529 cancel_work_sync(&data->work);
530
531 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
532 usb_kill_anchored_urbs(&data->isoc_anchor);
533
534 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
535 usb_kill_anchored_urbs(&data->bulk_anchor);
536
537 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
538 usb_kill_anchored_urbs(&data->intr_anchor);
539
540 return 0;
541 }
542
543 static int btusb_flush(struct hci_dev *hdev)
544 {
545 struct btusb_data *data = hdev->driver_data;
546
547 BT_DBG("%s", hdev->name);
548
549 usb_kill_anchored_urbs(&data->tx_anchor);
550
551 return 0;
552 }
553
554 static int btusb_send_frame(struct sk_buff *skb)
555 {
556 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
557 struct btusb_data *data = hdev->driver_data;
558 struct usb_ctrlrequest *dr;
559 struct urb *urb;
560 unsigned int pipe;
561 int err;
562
563 BT_DBG("%s", hdev->name);
564
565 if (!test_bit(HCI_RUNNING, &hdev->flags))
566 return -EBUSY;
567
568 switch (bt_cb(skb)->pkt_type) {
569 case HCI_COMMAND_PKT:
570 urb = usb_alloc_urb(0, GFP_ATOMIC);
571 if (!urb)
572 return -ENOMEM;
573
574 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
575 if (!dr) {
576 usb_free_urb(urb);
577 return -ENOMEM;
578 }
579
580 dr->bRequestType = data->cmdreq_type;
581 dr->bRequest = 0;
582 dr->wIndex = 0;
583 dr->wValue = 0;
584 dr->wLength = __cpu_to_le16(skb->len);
585
586 pipe = usb_sndctrlpipe(data->udev, 0x00);
587
588 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
589 skb->data, skb->len, btusb_tx_complete, skb);
590
591 hdev->stat.cmd_tx++;
592 break;
593
594 case HCI_ACLDATA_PKT:
595 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
596 return -ENODEV;
597
598 urb = usb_alloc_urb(0, GFP_ATOMIC);
599 if (!urb)
600 return -ENOMEM;
601
602 pipe = usb_sndbulkpipe(data->udev,
603 data->bulk_tx_ep->bEndpointAddress);
604
605 usb_fill_bulk_urb(urb, data->udev, pipe,
606 skb->data, skb->len, btusb_tx_complete, skb);
607
608 hdev->stat.acl_tx++;
609 break;
610
611 case HCI_SCODATA_PKT:
612 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
613 return -ENODEV;
614
615 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
616 if (!urb)
617 return -ENOMEM;
618
619 pipe = usb_sndisocpipe(data->udev,
620 data->isoc_tx_ep->bEndpointAddress);
621
622 urb->dev = data->udev;
623 urb->pipe = pipe;
624 urb->context = skb;
625 urb->complete = btusb_tx_complete;
626 urb->interval = data->isoc_tx_ep->bInterval;
627
628 urb->transfer_flags = URB_ISO_ASAP;
629 urb->transfer_buffer = skb->data;
630 urb->transfer_buffer_length = skb->len;
631
632 __fill_isoc_descriptor(urb, skb->len,
633 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
634
635 hdev->stat.sco_tx++;
636 break;
637
638 default:
639 return -EILSEQ;
640 }
641
642 usb_anchor_urb(urb, &data->tx_anchor);
643
644 err = usb_submit_urb(urb, GFP_ATOMIC);
645 if (err < 0) {
646 BT_ERR("%s urb %p submission failed", hdev->name, urb);
647 kfree(urb->setup_packet);
648 usb_unanchor_urb(urb);
649 }
650
651 usb_free_urb(urb);
652
653 return err;
654 }
655
656 static void btusb_destruct(struct hci_dev *hdev)
657 {
658 struct btusb_data *data = hdev->driver_data;
659
660 BT_DBG("%s", hdev->name);
661
662 kfree(data);
663 }
664
665 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
666 {
667 struct btusb_data *data = hdev->driver_data;
668
669 BT_DBG("%s evt %d", hdev->name, evt);
670
671 if (hdev->conn_hash.sco_num != data->sco_num) {
672 data->sco_num = hdev->conn_hash.sco_num;
673 schedule_work(&data->work);
674 }
675 }
676
677 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
678 {
679 struct btusb_data *data = hdev->driver_data;
680 struct usb_interface *intf = data->isoc;
681 struct usb_endpoint_descriptor *ep_desc;
682 int i, err;
683
684 if (!data->isoc)
685 return -ENODEV;
686
687 err = usb_set_interface(data->udev, 1, altsetting);
688 if (err < 0) {
689 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
690 return err;
691 }
692
693 data->isoc_altsetting = altsetting;
694
695 data->isoc_tx_ep = NULL;
696 data->isoc_rx_ep = NULL;
697
698 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
699 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
700
701 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
702 data->isoc_tx_ep = ep_desc;
703 continue;
704 }
705
706 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
707 data->isoc_rx_ep = ep_desc;
708 continue;
709 }
710 }
711
712 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
713 BT_ERR("%s invalid SCO descriptors", hdev->name);
714 return -ENODEV;
715 }
716
717 return 0;
718 }
719
720 static void btusb_work(struct work_struct *work)
721 {
722 struct btusb_data *data = container_of(work, struct btusb_data, work);
723 struct hci_dev *hdev = data->hdev;
724
725 if (hdev->conn_hash.sco_num > 0) {
726 if (data->isoc_altsetting != 2) {
727 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
728 usb_kill_anchored_urbs(&data->isoc_anchor);
729
730 if (__set_isoc_interface(hdev, 2) < 0)
731 return;
732 }
733
734 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
735 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
736 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
737 else
738 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
739 }
740 } else {
741 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
742 usb_kill_anchored_urbs(&data->isoc_anchor);
743
744 __set_isoc_interface(hdev, 0);
745 }
746 }
747
748 static int btusb_probe(struct usb_interface *intf,
749 const struct usb_device_id *id)
750 {
751 struct usb_endpoint_descriptor *ep_desc;
752 struct btusb_data *data;
753 struct hci_dev *hdev;
754 int i, err;
755
756 BT_DBG("intf %p id %p", intf, id);
757
758 /* interface numbers are hardcoded in the spec */
759 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
760 return -ENODEV;
761
762 if (!id->driver_info) {
763 const struct usb_device_id *match;
764 match = usb_match_id(intf, blacklist_table);
765 if (match)
766 id = match;
767 }
768
769 if (id->driver_info == BTUSB_IGNORE)
770 return -ENODEV;
771
772 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
773 return -ENODEV;
774
775 if (ignore_csr && id->driver_info & BTUSB_CSR)
776 return -ENODEV;
777
778 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
779 return -ENODEV;
780
781 data = kzalloc(sizeof(*data), GFP_KERNEL);
782 if (!data)
783 return -ENOMEM;
784
785 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
786 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
787
788 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
789 data->intr_ep = ep_desc;
790 continue;
791 }
792
793 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
794 data->bulk_tx_ep = ep_desc;
795 continue;
796 }
797
798 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
799 data->bulk_rx_ep = ep_desc;
800 continue;
801 }
802 }
803
804 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
805 kfree(data);
806 return -ENODEV;
807 }
808
809 data->cmdreq_type = USB_TYPE_CLASS;
810
811 data->udev = interface_to_usbdev(intf);
812 data->intf = intf;
813
814 spin_lock_init(&data->lock);
815
816 INIT_WORK(&data->work, btusb_work);
817
818 init_usb_anchor(&data->tx_anchor);
819 init_usb_anchor(&data->intr_anchor);
820 init_usb_anchor(&data->bulk_anchor);
821 init_usb_anchor(&data->isoc_anchor);
822
823 hdev = hci_alloc_dev();
824 if (!hdev) {
825 kfree(data);
826 return -ENOMEM;
827 }
828
829 hdev->type = HCI_USB;
830 hdev->driver_data = data;
831
832 data->hdev = hdev;
833
834 SET_HCIDEV_DEV(hdev, &intf->dev);
835
836 hdev->open = btusb_open;
837 hdev->close = btusb_close;
838 hdev->flush = btusb_flush;
839 hdev->send = btusb_send_frame;
840 hdev->destruct = btusb_destruct;
841 hdev->notify = btusb_notify;
842
843 hdev->owner = THIS_MODULE;
844
845 /* Interface numbers are hardcoded in the specification */
846 data->isoc = usb_ifnum_to_if(data->udev, 1);
847
848 if (!reset)
849 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
850
851 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
852 if (!disable_scofix)
853 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
854 }
855
856 if (id->driver_info & BTUSB_BROKEN_ISOC)
857 data->isoc = NULL;
858
859 if (id->driver_info & BTUSB_DIGIANSWER) {
860 data->cmdreq_type = USB_TYPE_VENDOR;
861 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
862 }
863
864 if (id->driver_info & BTUSB_CSR) {
865 struct usb_device *udev = data->udev;
866
867 /* Old firmware would otherwise execute USB reset */
868 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
869 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
870 }
871
872 if (id->driver_info & BTUSB_SNIFFER) {
873 struct usb_device *udev = data->udev;
874
875 /* New sniffer firmware has crippled HCI interface */
876 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
877 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
878
879 data->isoc = NULL;
880 }
881
882 if (id->driver_info & BTUSB_BCM92035) {
883 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
884 struct sk_buff *skb;
885
886 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
887 if (skb) {
888 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
889 skb_queue_tail(&hdev->driver_init, skb);
890 }
891 }
892
893 if (data->isoc) {
894 err = usb_driver_claim_interface(&btusb_driver,
895 data->isoc, data);
896 if (err < 0) {
897 hci_free_dev(hdev);
898 kfree(data);
899 return err;
900 }
901 }
902
903 err = hci_register_dev(hdev);
904 if (err < 0) {
905 hci_free_dev(hdev);
906 kfree(data);
907 return err;
908 }
909
910 usb_set_intfdata(intf, data);
911
912 return 0;
913 }
914
915 static void btusb_disconnect(struct usb_interface *intf)
916 {
917 struct btusb_data *data = usb_get_intfdata(intf);
918 struct hci_dev *hdev;
919
920 BT_DBG("intf %p", intf);
921
922 if (!data)
923 return;
924
925 hdev = data->hdev;
926
927 __hci_dev_hold(hdev);
928
929 usb_set_intfdata(data->intf, NULL);
930
931 if (data->isoc)
932 usb_set_intfdata(data->isoc, NULL);
933
934 hci_unregister_dev(hdev);
935
936 if (intf == data->isoc)
937 usb_driver_release_interface(&btusb_driver, data->intf);
938 else if (data->isoc)
939 usb_driver_release_interface(&btusb_driver, data->isoc);
940
941 __hci_dev_put(hdev);
942
943 hci_free_dev(hdev);
944 }
945
946 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
947 {
948 struct btusb_data *data = usb_get_intfdata(intf);
949
950 BT_DBG("intf %p", intf);
951
952 if (data->suspend_count++)
953 return 0;
954
955 cancel_work_sync(&data->work);
956
957 usb_kill_anchored_urbs(&data->tx_anchor);
958
959 usb_kill_anchored_urbs(&data->isoc_anchor);
960 usb_kill_anchored_urbs(&data->bulk_anchor);
961 usb_kill_anchored_urbs(&data->intr_anchor);
962
963 return 0;
964 }
965
966 static int btusb_resume(struct usb_interface *intf)
967 {
968 struct btusb_data *data = usb_get_intfdata(intf);
969 struct hci_dev *hdev = data->hdev;
970 int err;
971
972 BT_DBG("intf %p", intf);
973
974 if (--data->suspend_count)
975 return 0;
976
977 if (!test_bit(HCI_RUNNING, &hdev->flags))
978 return 0;
979
980 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
981 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
982 if (err < 0) {
983 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
984 return err;
985 }
986 }
987
988 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
989 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
990 if (err < 0) {
991 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
992 return err;
993 } else
994 btusb_submit_bulk_urb(hdev, GFP_NOIO);
995 }
996
997 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
998 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
999 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1000 else
1001 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1002 }
1003
1004 return 0;
1005 }
1006
1007 static struct usb_driver btusb_driver = {
1008 .name = "btusb",
1009 .probe = btusb_probe,
1010 .disconnect = btusb_disconnect,
1011 .suspend = btusb_suspend,
1012 .resume = btusb_resume,
1013 .id_table = btusb_table,
1014 };
1015
1016 static int __init btusb_init(void)
1017 {
1018 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1019
1020 return usb_register(&btusb_driver);
1021 }
1022
1023 static void __exit btusb_exit(void)
1024 {
1025 usb_deregister(&btusb_driver);
1026 }
1027
1028 module_init(btusb_init);
1029 module_exit(btusb_exit);
1030
1031 module_param(ignore_dga, bool, 0644);
1032 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1033
1034 module_param(ignore_csr, bool, 0644);
1035 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1036
1037 module_param(ignore_sniffer, bool, 0644);
1038 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1039
1040 module_param(disable_scofix, bool, 0644);
1041 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1042
1043 module_param(force_scofix, bool, 0644);
1044 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1045
1046 module_param(reset, bool, 0644);
1047 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1048
1049 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1050 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1051 MODULE_VERSION(VERSION);
1052 MODULE_LICENSE("GPL");
1053
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