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The discovered bit in PGCCSR register indicates if the device has been
[linux-2.6/next.git] / drivers / bluetooth / btusb.c
blob656287c83eab8a3d2547e06f30a8e613cc761206
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 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 #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 /* Apple MacBookPro 7,1 */
64 { USB_DEVICE(0x05ac, 0x8213) },
65
66 /* Apple iMac11,1 */
67 { USB_DEVICE(0x05ac, 0x8215) },
68
69 /* Apple MacBookPro6,2 */
70 { USB_DEVICE(0x05ac, 0x8218) },
71
72 /* Apple MacBookAir3,1, MacBookAir3,2 */
73 { USB_DEVICE(0x05ac, 0x821b) },
74
75 /* Apple MacBookPro8,2 */
76 { USB_DEVICE(0x05ac, 0x821a) },
77
78 /* AVM BlueFRITZ! USB v2.0 */
79 { USB_DEVICE(0x057c, 0x3800) },
80
81 /* Bluetooth Ultraport Module from IBM */
82 { USB_DEVICE(0x04bf, 0x030a) },
83
84 /* ALPS Modules with non-standard id */
85 { USB_DEVICE(0x044e, 0x3001) },
86 { USB_DEVICE(0x044e, 0x3002) },
87
88 /* Ericsson with non-standard id */
89 { USB_DEVICE(0x0bdb, 0x1002) },
90
91 /* Canyon CN-BTU1 with HID interfaces */
92 { USB_DEVICE(0x0c10, 0x0000) },
93
94 { } /* Terminating entry */
95 };
96
97 MODULE_DEVICE_TABLE(usb, btusb_table);
98
99 static struct usb_device_id blacklist_table[] = {
100 /* CSR BlueCore devices */
101 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
102
103 /* Broadcom BCM2033 without firmware */
104 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
105
106 /* Atheros 3011 with sflash firmware */
107 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
108 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
109 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
110
111 /* Atheros AR9285 Malbec with sflash firmware */
112 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
113
114 /* Atheros 3012 with sflash firmware */
115 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
116
117 /* Atheros AR5BBU12 with sflash firmware */
118 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
119
120 /* Broadcom BCM2035 */
121 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
122 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
123 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
124
125 /* Broadcom BCM2045 */
126 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
127 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
128
129 /* IBM/Lenovo ThinkPad with Broadcom chip */
130 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
131 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
132
133 /* HP laptop with Broadcom chip */
134 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
135
136 /* Dell laptop with Broadcom chip */
137 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
138
139 /* Dell Wireless 370 and 410 devices */
140 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
141 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
142
143 /* Belkin F8T012 and F8T013 devices */
144 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
145 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
146
147 /* Asus WL-BTD202 device */
148 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
149
150 /* Kensington Bluetooth USB adapter */
151 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
152
153 /* RTX Telecom based adapters with buggy SCO support */
154 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
155 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
156
157 /* CONWISE Technology based adapters with buggy SCO support */
158 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
159
160 /* Digianswer devices */
161 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
162 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
163
164 /* CSR BlueCore Bluetooth Sniffer */
165 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
166
167 /* Frontline ComProbe Bluetooth Sniffer */
168 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
169
170 { } /* Terminating entry */
171 };
172
173 #define BTUSB_MAX_ISOC_FRAMES 10
174
175 #define BTUSB_INTR_RUNNING 0
176 #define BTUSB_BULK_RUNNING 1
177 #define BTUSB_ISOC_RUNNING 2
178 #define BTUSB_SUSPENDING 3
179 #define BTUSB_DID_ISO_RESUME 4
180
181 struct btusb_data {
182 struct hci_dev *hdev;
183 struct usb_device *udev;
184 struct usb_interface *intf;
185 struct usb_interface *isoc;
186
187 spinlock_t lock;
188
189 unsigned long flags;
190
191 struct work_struct work;
192 struct work_struct waker;
193
194 struct usb_anchor tx_anchor;
195 struct usb_anchor intr_anchor;
196 struct usb_anchor bulk_anchor;
197 struct usb_anchor isoc_anchor;
198 struct usb_anchor deferred;
199 int tx_in_flight;
200 spinlock_t txlock;
201
202 struct usb_endpoint_descriptor *intr_ep;
203 struct usb_endpoint_descriptor *bulk_tx_ep;
204 struct usb_endpoint_descriptor *bulk_rx_ep;
205 struct usb_endpoint_descriptor *isoc_tx_ep;
206 struct usb_endpoint_descriptor *isoc_rx_ep;
207
208 __u8 cmdreq_type;
209
210 unsigned int sco_num;
211 int isoc_altsetting;
212 int suspend_count;
213 };
214
215 static int inc_tx(struct btusb_data *data)
216 {
217 unsigned long flags;
218 int rv;
219
220 spin_lock_irqsave(&data->txlock, flags);
221 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
222 if (!rv)
223 data->tx_in_flight++;
224 spin_unlock_irqrestore(&data->txlock, flags);
225
226 return rv;
227 }
228
229 static void btusb_intr_complete(struct urb *urb)
230 {
231 struct hci_dev *hdev = urb->context;
232 struct btusb_data *data = hdev->driver_data;
233 int err;
234
235 BT_DBG("%s urb %p status %d count %d", hdev->name,
236 urb, urb->status, urb->actual_length);
237
238 if (!test_bit(HCI_RUNNING, &hdev->flags))
239 return;
240
241 if (urb->status == 0) {
242 hdev->stat.byte_rx += urb->actual_length;
243
244 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
245 urb->transfer_buffer,
246 urb->actual_length) < 0) {
247 BT_ERR("%s corrupted event packet", hdev->name);
248 hdev->stat.err_rx++;
249 }
250 }
251
252 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
253 return;
254
255 usb_mark_last_busy(data->udev);
256 usb_anchor_urb(urb, &data->intr_anchor);
257
258 err = usb_submit_urb(urb, GFP_ATOMIC);
259 if (err < 0) {
260 /* -EPERM: urb is being killed;
261 * -ENODEV: device got disconnected */
262 if (err != -EPERM && err != -ENODEV)
263 BT_ERR("%s urb %p failed to resubmit (%d)",
264 hdev->name, urb, -err);
265 usb_unanchor_urb(urb);
266 }
267 }
268
269 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
270 {
271 struct btusb_data *data = hdev->driver_data;
272 struct urb *urb;
273 unsigned char *buf;
274 unsigned int pipe;
275 int err, size;
276
277 BT_DBG("%s", hdev->name);
278
279 if (!data->intr_ep)
280 return -ENODEV;
281
282 urb = usb_alloc_urb(0, mem_flags);
283 if (!urb)
284 return -ENOMEM;
285
286 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
287
288 buf = kmalloc(size, mem_flags);
289 if (!buf) {
290 usb_free_urb(urb);
291 return -ENOMEM;
292 }
293
294 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
295
296 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
297 btusb_intr_complete, hdev,
298 data->intr_ep->bInterval);
299
300 urb->transfer_flags |= URB_FREE_BUFFER;
301
302 usb_anchor_urb(urb, &data->intr_anchor);
303
304 err = usb_submit_urb(urb, mem_flags);
305 if (err < 0) {
306 BT_ERR("%s urb %p submission failed (%d)",
307 hdev->name, urb, -err);
308 usb_unanchor_urb(urb);
309 }
310
311 usb_free_urb(urb);
312
313 return err;
314 }
315
316 static void btusb_bulk_complete(struct urb *urb)
317 {
318 struct hci_dev *hdev = urb->context;
319 struct btusb_data *data = hdev->driver_data;
320 int err;
321
322 BT_DBG("%s urb %p status %d count %d", hdev->name,
323 urb, urb->status, urb->actual_length);
324
325 if (!test_bit(HCI_RUNNING, &hdev->flags))
326 return;
327
328 if (urb->status == 0) {
329 hdev->stat.byte_rx += urb->actual_length;
330
331 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
332 urb->transfer_buffer,
333 urb->actual_length) < 0) {
334 BT_ERR("%s corrupted ACL packet", hdev->name);
335 hdev->stat.err_rx++;
336 }
337 }
338
339 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
340 return;
341
342 usb_anchor_urb(urb, &data->bulk_anchor);
343 usb_mark_last_busy(data->udev);
344
345 err = usb_submit_urb(urb, GFP_ATOMIC);
346 if (err < 0) {
347 /* -EPERM: urb is being killed;
348 * -ENODEV: device got disconnected */
349 if (err != -EPERM && err != -ENODEV)
350 BT_ERR("%s urb %p failed to resubmit (%d)",
351 hdev->name, urb, -err);
352 usb_unanchor_urb(urb);
353 }
354 }
355
356 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
357 {
358 struct btusb_data *data = hdev->driver_data;
359 struct urb *urb;
360 unsigned char *buf;
361 unsigned int pipe;
362 int err, size = HCI_MAX_FRAME_SIZE;
363
364 BT_DBG("%s", hdev->name);
365
366 if (!data->bulk_rx_ep)
367 return -ENODEV;
368
369 urb = usb_alloc_urb(0, mem_flags);
370 if (!urb)
371 return -ENOMEM;
372
373 buf = kmalloc(size, mem_flags);
374 if (!buf) {
375 usb_free_urb(urb);
376 return -ENOMEM;
377 }
378
379 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
380
381 usb_fill_bulk_urb(urb, data->udev, pipe,
382 buf, size, btusb_bulk_complete, hdev);
383
384 urb->transfer_flags |= URB_FREE_BUFFER;
385
386 usb_mark_last_busy(data->udev);
387 usb_anchor_urb(urb, &data->bulk_anchor);
388
389 err = usb_submit_urb(urb, mem_flags);
390 if (err < 0) {
391 BT_ERR("%s urb %p submission failed (%d)",
392 hdev->name, urb, -err);
393 usb_unanchor_urb(urb);
394 }
395
396 usb_free_urb(urb);
397
398 return err;
399 }
400
401 static void btusb_isoc_complete(struct urb *urb)
402 {
403 struct hci_dev *hdev = urb->context;
404 struct btusb_data *data = hdev->driver_data;
405 int i, err;
406
407 BT_DBG("%s urb %p status %d count %d", hdev->name,
408 urb, urb->status, urb->actual_length);
409
410 if (!test_bit(HCI_RUNNING, &hdev->flags))
411 return;
412
413 if (urb->status == 0) {
414 for (i = 0; i < urb->number_of_packets; i++) {
415 unsigned int offset = urb->iso_frame_desc[i].offset;
416 unsigned int length = urb->iso_frame_desc[i].actual_length;
417
418 if (urb->iso_frame_desc[i].status)
419 continue;
420
421 hdev->stat.byte_rx += length;
422
423 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
424 urb->transfer_buffer + offset,
425 length) < 0) {
426 BT_ERR("%s corrupted SCO packet", hdev->name);
427 hdev->stat.err_rx++;
428 }
429 }
430 }
431
432 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
433 return;
434
435 usb_anchor_urb(urb, &data->isoc_anchor);
436
437 err = usb_submit_urb(urb, GFP_ATOMIC);
438 if (err < 0) {
439 /* -EPERM: urb is being killed;
440 * -ENODEV: device got disconnected */
441 if (err != -EPERM && err != -ENODEV)
442 BT_ERR("%s urb %p failed to resubmit (%d)",
443 hdev->name, urb, -err);
444 usb_unanchor_urb(urb);
445 }
446 }
447
448 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
449 {
450 int i, offset = 0;
451
452 BT_DBG("len %d mtu %d", len, mtu);
453
454 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
455 i++, offset += mtu, len -= mtu) {
456 urb->iso_frame_desc[i].offset = offset;
457 urb->iso_frame_desc[i].length = mtu;
458 }
459
460 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
461 urb->iso_frame_desc[i].offset = offset;
462 urb->iso_frame_desc[i].length = len;
463 i++;
464 }
465
466 urb->number_of_packets = i;
467 }
468
469 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
470 {
471 struct btusb_data *data = hdev->driver_data;
472 struct urb *urb;
473 unsigned char *buf;
474 unsigned int pipe;
475 int err, size;
476
477 BT_DBG("%s", hdev->name);
478
479 if (!data->isoc_rx_ep)
480 return -ENODEV;
481
482 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
483 if (!urb)
484 return -ENOMEM;
485
486 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
487 BTUSB_MAX_ISOC_FRAMES;
488
489 buf = kmalloc(size, mem_flags);
490 if (!buf) {
491 usb_free_urb(urb);
492 return -ENOMEM;
493 }
494
495 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
496
497 urb->dev = data->udev;
498 urb->pipe = pipe;
499 urb->context = hdev;
500 urb->complete = btusb_isoc_complete;
501 urb->interval = data->isoc_rx_ep->bInterval;
502
503 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
504 urb->transfer_buffer = buf;
505 urb->transfer_buffer_length = size;
506
507 __fill_isoc_descriptor(urb, size,
508 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
509
510 usb_anchor_urb(urb, &data->isoc_anchor);
511
512 err = usb_submit_urb(urb, mem_flags);
513 if (err < 0) {
514 BT_ERR("%s urb %p submission failed (%d)",
515 hdev->name, urb, -err);
516 usb_unanchor_urb(urb);
517 }
518
519 usb_free_urb(urb);
520
521 return err;
522 }
523
524 static void btusb_tx_complete(struct urb *urb)
525 {
526 struct sk_buff *skb = urb->context;
527 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
528 struct btusb_data *data = hdev->driver_data;
529
530 BT_DBG("%s urb %p status %d count %d", hdev->name,
531 urb, urb->status, urb->actual_length);
532
533 if (!test_bit(HCI_RUNNING, &hdev->flags))
534 goto done;
535
536 if (!urb->status)
537 hdev->stat.byte_tx += urb->transfer_buffer_length;
538 else
539 hdev->stat.err_tx++;
540
541 done:
542 spin_lock(&data->txlock);
543 data->tx_in_flight--;
544 spin_unlock(&data->txlock);
545
546 kfree(urb->setup_packet);
547
548 kfree_skb(skb);
549 }
550
551 static void btusb_isoc_tx_complete(struct urb *urb)
552 {
553 struct sk_buff *skb = urb->context;
554 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
555
556 BT_DBG("%s urb %p status %d count %d", hdev->name,
557 urb, urb->status, urb->actual_length);
558
559 if (!test_bit(HCI_RUNNING, &hdev->flags))
560 goto done;
561
562 if (!urb->status)
563 hdev->stat.byte_tx += urb->transfer_buffer_length;
564 else
565 hdev->stat.err_tx++;
566
567 done:
568 kfree(urb->setup_packet);
569
570 kfree_skb(skb);
571 }
572
573 static int btusb_open(struct hci_dev *hdev)
574 {
575 struct btusb_data *data = hdev->driver_data;
576 int err;
577
578 BT_DBG("%s", hdev->name);
579
580 err = usb_autopm_get_interface(data->intf);
581 if (err < 0)
582 return err;
583
584 data->intf->needs_remote_wakeup = 1;
585
586 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
587 goto done;
588
589 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
590 goto done;
591
592 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
593 if (err < 0)
594 goto failed;
595
596 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
597 if (err < 0) {
598 usb_kill_anchored_urbs(&data->intr_anchor);
599 goto failed;
600 }
601
602 set_bit(BTUSB_BULK_RUNNING, &data->flags);
603 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
604
605 done:
606 usb_autopm_put_interface(data->intf);
607 return 0;
608
609 failed:
610 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
611 clear_bit(HCI_RUNNING, &hdev->flags);
612 usb_autopm_put_interface(data->intf);
613 return err;
614 }
615
616 static void btusb_stop_traffic(struct btusb_data *data)
617 {
618 usb_kill_anchored_urbs(&data->intr_anchor);
619 usb_kill_anchored_urbs(&data->bulk_anchor);
620 usb_kill_anchored_urbs(&data->isoc_anchor);
621 }
622
623 static int btusb_close(struct hci_dev *hdev)
624 {
625 struct btusb_data *data = hdev->driver_data;
626 int err;
627
628 BT_DBG("%s", hdev->name);
629
630 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
631 return 0;
632
633 cancel_work_sync(&data->work);
634 cancel_work_sync(&data->waker);
635
636 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
637 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
638 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
639
640 btusb_stop_traffic(data);
641 err = usb_autopm_get_interface(data->intf);
642 if (err < 0)
643 goto failed;
644
645 data->intf->needs_remote_wakeup = 0;
646 usb_autopm_put_interface(data->intf);
647
648 failed:
649 usb_scuttle_anchored_urbs(&data->deferred);
650 return 0;
651 }
652
653 static int btusb_flush(struct hci_dev *hdev)
654 {
655 struct btusb_data *data = hdev->driver_data;
656
657 BT_DBG("%s", hdev->name);
658
659 usb_kill_anchored_urbs(&data->tx_anchor);
660
661 return 0;
662 }
663
664 static int btusb_send_frame(struct sk_buff *skb)
665 {
666 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
667 struct btusb_data *data = hdev->driver_data;
668 struct usb_ctrlrequest *dr;
669 struct urb *urb;
670 unsigned int pipe;
671 int err;
672
673 BT_DBG("%s", hdev->name);
674
675 if (!test_bit(HCI_RUNNING, &hdev->flags))
676 return -EBUSY;
677
678 switch (bt_cb(skb)->pkt_type) {
679 case HCI_COMMAND_PKT:
680 urb = usb_alloc_urb(0, GFP_ATOMIC);
681 if (!urb)
682 return -ENOMEM;
683
684 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
685 if (!dr) {
686 usb_free_urb(urb);
687 return -ENOMEM;
688 }
689
690 dr->bRequestType = data->cmdreq_type;
691 dr->bRequest = 0;
692 dr->wIndex = 0;
693 dr->wValue = 0;
694 dr->wLength = __cpu_to_le16(skb->len);
695
696 pipe = usb_sndctrlpipe(data->udev, 0x00);
697
698 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
699 skb->data, skb->len, btusb_tx_complete, skb);
700
701 hdev->stat.cmd_tx++;
702 break;
703
704 case HCI_ACLDATA_PKT:
705 if (!data->bulk_tx_ep)
706 return -ENODEV;
707
708 urb = usb_alloc_urb(0, GFP_ATOMIC);
709 if (!urb)
710 return -ENOMEM;
711
712 pipe = usb_sndbulkpipe(data->udev,
713 data->bulk_tx_ep->bEndpointAddress);
714
715 usb_fill_bulk_urb(urb, data->udev, pipe,
716 skb->data, skb->len, btusb_tx_complete, skb);
717
718 hdev->stat.acl_tx++;
719 break;
720
721 case HCI_SCODATA_PKT:
722 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
723 return -ENODEV;
724
725 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
726 if (!urb)
727 return -ENOMEM;
728
729 pipe = usb_sndisocpipe(data->udev,
730 data->isoc_tx_ep->bEndpointAddress);
731
732 usb_fill_int_urb(urb, data->udev, pipe,
733 skb->data, skb->len, btusb_isoc_tx_complete,
734 skb, data->isoc_tx_ep->bInterval);
735
736 urb->transfer_flags = URB_ISO_ASAP;
737
738 __fill_isoc_descriptor(urb, skb->len,
739 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
740
741 hdev->stat.sco_tx++;
742 goto skip_waking;
743
744 default:
745 return -EILSEQ;
746 }
747
748 err = inc_tx(data);
749 if (err) {
750 usb_anchor_urb(urb, &data->deferred);
751 schedule_work(&data->waker);
752 err = 0;
753 goto done;
754 }
755
756 skip_waking:
757 usb_anchor_urb(urb, &data->tx_anchor);
758
759 err = usb_submit_urb(urb, GFP_ATOMIC);
760 if (err < 0) {
761 BT_ERR("%s urb %p submission failed", hdev->name, urb);
762 kfree(urb->setup_packet);
763 usb_unanchor_urb(urb);
764 } else {
765 usb_mark_last_busy(data->udev);
766 }
767
768 usb_free_urb(urb);
769
770 done:
771 return err;
772 }
773
774 static void btusb_destruct(struct hci_dev *hdev)
775 {
776 struct btusb_data *data = hdev->driver_data;
777
778 BT_DBG("%s", hdev->name);
779
780 kfree(data);
781 }
782
783 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
784 {
785 struct btusb_data *data = hdev->driver_data;
786
787 BT_DBG("%s evt %d", hdev->name, evt);
788
789 if (hdev->conn_hash.sco_num != data->sco_num) {
790 data->sco_num = hdev->conn_hash.sco_num;
791 schedule_work(&data->work);
792 }
793 }
794
795 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
796 {
797 struct btusb_data *data = hdev->driver_data;
798 struct usb_interface *intf = data->isoc;
799 struct usb_endpoint_descriptor *ep_desc;
800 int i, err;
801
802 if (!data->isoc)
803 return -ENODEV;
804
805 err = usb_set_interface(data->udev, 1, altsetting);
806 if (err < 0) {
807 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
808 return err;
809 }
810
811 data->isoc_altsetting = altsetting;
812
813 data->isoc_tx_ep = NULL;
814 data->isoc_rx_ep = NULL;
815
816 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
817 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
818
819 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
820 data->isoc_tx_ep = ep_desc;
821 continue;
822 }
823
824 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
825 data->isoc_rx_ep = ep_desc;
826 continue;
827 }
828 }
829
830 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
831 BT_ERR("%s invalid SCO descriptors", hdev->name);
832 return -ENODEV;
833 }
834
835 return 0;
836 }
837
838 static void btusb_work(struct work_struct *work)
839 {
840 struct btusb_data *data = container_of(work, struct btusb_data, work);
841 struct hci_dev *hdev = data->hdev;
842 int err;
843
844 if (hdev->conn_hash.sco_num > 0) {
845 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
846 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
847 if (err < 0) {
848 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
849 usb_kill_anchored_urbs(&data->isoc_anchor);
850 return;
851 }
852
853 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
854 }
855 if (data->isoc_altsetting != 2) {
856 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
857 usb_kill_anchored_urbs(&data->isoc_anchor);
858
859 if (__set_isoc_interface(hdev, 2) < 0)
860 return;
861 }
862
863 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
864 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
865 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
866 else
867 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
868 }
869 } else {
870 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
871 usb_kill_anchored_urbs(&data->isoc_anchor);
872
873 __set_isoc_interface(hdev, 0);
874 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
875 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
876 }
877 }
878
879 static void btusb_waker(struct work_struct *work)
880 {
881 struct btusb_data *data = container_of(work, struct btusb_data, waker);
882 int err;
883
884 err = usb_autopm_get_interface(data->intf);
885 if (err < 0)
886 return;
887
888 usb_autopm_put_interface(data->intf);
889 }
890
891 static int btusb_probe(struct usb_interface *intf,
892 const struct usb_device_id *id)
893 {
894 struct usb_endpoint_descriptor *ep_desc;
895 struct btusb_data *data;
896 struct hci_dev *hdev;
897 int i, err;
898
899 BT_DBG("intf %p id %p", intf, id);
900
901 /* interface numbers are hardcoded in the spec */
902 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
903 return -ENODEV;
904
905 if (!id->driver_info) {
906 const struct usb_device_id *match;
907 match = usb_match_id(intf, blacklist_table);
908 if (match)
909 id = match;
910 }
911
912 if (id->driver_info == BTUSB_IGNORE)
913 return -ENODEV;
914
915 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
916 return -ENODEV;
917
918 if (ignore_csr && id->driver_info & BTUSB_CSR)
919 return -ENODEV;
920
921 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
922 return -ENODEV;
923
924 if (id->driver_info & BTUSB_ATH3012) {
925 struct usb_device *udev = interface_to_usbdev(intf);
926
927 /* Old firmware would otherwise let ath3k driver load
928 * patch and sysconfig files */
929 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
930 return -ENODEV;
931 }
932
933 data = kzalloc(sizeof(*data), GFP_KERNEL);
934 if (!data)
935 return -ENOMEM;
936
937 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
938 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
939
940 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
941 data->intr_ep = ep_desc;
942 continue;
943 }
944
945 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
946 data->bulk_tx_ep = ep_desc;
947 continue;
948 }
949
950 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
951 data->bulk_rx_ep = ep_desc;
952 continue;
953 }
954 }
955
956 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
957 kfree(data);
958 return -ENODEV;
959 }
960
961 data->cmdreq_type = USB_TYPE_CLASS;
962
963 data->udev = interface_to_usbdev(intf);
964 data->intf = intf;
965
966 spin_lock_init(&data->lock);
967
968 INIT_WORK(&data->work, btusb_work);
969 INIT_WORK(&data->waker, btusb_waker);
970 spin_lock_init(&data->txlock);
971
972 init_usb_anchor(&data->tx_anchor);
973 init_usb_anchor(&data->intr_anchor);
974 init_usb_anchor(&data->bulk_anchor);
975 init_usb_anchor(&data->isoc_anchor);
976 init_usb_anchor(&data->deferred);
977
978 hdev = hci_alloc_dev();
979 if (!hdev) {
980 kfree(data);
981 return -ENOMEM;
982 }
983
984 hdev->bus = HCI_USB;
985 hdev->driver_data = data;
986
987 data->hdev = hdev;
988
989 SET_HCIDEV_DEV(hdev, &intf->dev);
990
991 hdev->open = btusb_open;
992 hdev->close = btusb_close;
993 hdev->flush = btusb_flush;
994 hdev->send = btusb_send_frame;
995 hdev->destruct = btusb_destruct;
996 hdev->notify = btusb_notify;
997
998 hdev->owner = THIS_MODULE;
999
1000 /* Interface numbers are hardcoded in the specification */
1001 data->isoc = usb_ifnum_to_if(data->udev, 1);
1002
1003 if (!reset)
1004 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1005
1006 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1007 if (!disable_scofix)
1008 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1009 }
1010
1011 if (id->driver_info & BTUSB_BROKEN_ISOC)
1012 data->isoc = NULL;
1013
1014 if (id->driver_info & BTUSB_DIGIANSWER) {
1015 data->cmdreq_type = USB_TYPE_VENDOR;
1016 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1017 }
1018
1019 if (id->driver_info & BTUSB_CSR) {
1020 struct usb_device *udev = data->udev;
1021
1022 /* Old firmware would otherwise execute USB reset */
1023 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1024 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1025 }
1026
1027 if (id->driver_info & BTUSB_SNIFFER) {
1028 struct usb_device *udev = data->udev;
1029
1030 /* New sniffer firmware has crippled HCI interface */
1031 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1032 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1033
1034 data->isoc = NULL;
1035 }
1036
1037 if (id->driver_info & BTUSB_BCM92035) {
1038 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1039 struct sk_buff *skb;
1040
1041 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1042 if (skb) {
1043 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1044 skb_queue_tail(&hdev->driver_init, skb);
1045 }
1046 }
1047
1048 if (data->isoc) {
1049 err = usb_driver_claim_interface(&btusb_driver,
1050 data->isoc, data);
1051 if (err < 0) {
1052 hci_free_dev(hdev);
1053 kfree(data);
1054 return err;
1055 }
1056 }
1057
1058 err = hci_register_dev(hdev);
1059 if (err < 0) {
1060 hci_free_dev(hdev);
1061 kfree(data);
1062 return err;
1063 }
1064
1065 usb_set_intfdata(intf, data);
1066
1067 return 0;
1068 }
1069
1070 static void btusb_disconnect(struct usb_interface *intf)
1071 {
1072 struct btusb_data *data = usb_get_intfdata(intf);
1073 struct hci_dev *hdev;
1074
1075 BT_DBG("intf %p", intf);
1076
1077 if (!data)
1078 return;
1079
1080 hdev = data->hdev;
1081
1082 __hci_dev_hold(hdev);
1083
1084 usb_set_intfdata(data->intf, NULL);
1085
1086 if (data->isoc)
1087 usb_set_intfdata(data->isoc, NULL);
1088
1089 hci_unregister_dev(hdev);
1090
1091 if (intf == data->isoc)
1092 usb_driver_release_interface(&btusb_driver, data->intf);
1093 else if (data->isoc)
1094 usb_driver_release_interface(&btusb_driver, data->isoc);
1095
1096 __hci_dev_put(hdev);
1097
1098 hci_free_dev(hdev);
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 static int __init btusb_init(void)
1215 {
1216 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1217
1218 return usb_register(&btusb_driver);
1219 }
1220
1221 static void __exit btusb_exit(void)
1222 {
1223 usb_deregister(&btusb_driver);
1224 }
1225
1226 module_init(btusb_init);
1227 module_exit(btusb_exit);
1228
1229 module_param(ignore_dga, bool, 0644);
1230 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1231
1232 module_param(ignore_csr, bool, 0644);
1233 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1234
1235 module_param(ignore_sniffer, bool, 0644);
1236 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1237
1238 module_param(disable_scofix, bool, 0644);
1239 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1240
1241 module_param(force_scofix, bool, 0644);
1242 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1243
1244 module_param(reset, bool, 0644);
1245 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1246
1247 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1248 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1249 MODULE_VERSION(VERSION);
1250 MODULE_LICENSE("GPL");
linux-next