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x86: cache_info: Kill the atomic allocation in amd_init_l3_cache()
[linux-2.6/linux-mips.git] / drivers / bluetooth / btusb.c
blobc2de8951e3fbe11ab876df9c12705548c0fead42
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
58 static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62 /* Apple MacBookPro 7,1 */
63 { USB_DEVICE(0x05ac, 0x8213) },
64
65 /* Apple iMac11,1 */
66 { USB_DEVICE(0x05ac, 0x8215) },
67
68 /* Apple MacBookPro6,2 */
69 { USB_DEVICE(0x05ac, 0x8218) },
70
71 /* Apple MacBookAir3,1, MacBookAir3,2 */
72 { USB_DEVICE(0x05ac, 0x821b) },
73
74 /* Apple MacBookPro8,2 */
75 { USB_DEVICE(0x05ac, 0x821a) },
76
77 /* AVM BlueFRITZ! USB v2.0 */
78 { USB_DEVICE(0x057c, 0x3800) },
79
80 /* Bluetooth Ultraport Module from IBM */
81 { USB_DEVICE(0x04bf, 0x030a) },
82
83 /* ALPS Modules with non-standard id */
84 { USB_DEVICE(0x044e, 0x3001) },
85 { USB_DEVICE(0x044e, 0x3002) },
86
87 /* Ericsson with non-standard id */
88 { USB_DEVICE(0x0bdb, 0x1002) },
89
90 /* Canyon CN-BTU1 with HID interfaces */
91 { USB_DEVICE(0x0c10, 0x0000) },
92
93 { } /* Terminating entry */
94 };
95
96 MODULE_DEVICE_TABLE(usb, btusb_table);
97
98 static struct usb_device_id blacklist_table[] = {
99 /* CSR BlueCore devices */
100 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
101
102 /* Broadcom BCM2033 without firmware */
103 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
104
105 /* Atheros 3011 with sflash firmware */
106 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
107 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
108
109 /* Atheros AR9285 Malbec with sflash firmware */
110 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
111
112 /* Atheros 3012 with sflash firmware */
113 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_IGNORE },
114
115 /* Atheros AR5BBU12 with sflash firmware */
116 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
117
118 /* Broadcom BCM2035 */
119 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
120 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
121 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
122
123 /* Broadcom BCM2045 */
124 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
125 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
126
127 /* IBM/Lenovo ThinkPad with Broadcom chip */
128 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
129 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
130
131 /* HP laptop with Broadcom chip */
132 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
133
134 /* Dell laptop with Broadcom chip */
135 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
136
137 /* Dell Wireless 370 and 410 devices */
138 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
139 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
140
141 /* Belkin F8T012 and F8T013 devices */
142 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
143 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
144
145 /* Asus WL-BTD202 device */
146 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
147
148 /* Kensington Bluetooth USB adapter */
149 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
150
151 /* RTX Telecom based adapters with buggy SCO support */
152 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
153 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
154
155 /* CONWISE Technology based adapters with buggy SCO support */
156 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
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 #define BTUSB_SUSPENDING 3
177 #define BTUSB_DID_ISO_RESUME 4
178
179 struct btusb_data {
180 struct hci_dev *hdev;
181 struct usb_device *udev;
182 struct usb_interface *intf;
183 struct usb_interface *isoc;
184
185 spinlock_t lock;
186
187 unsigned long flags;
188
189 struct work_struct work;
190 struct work_struct waker;
191
192 struct usb_anchor tx_anchor;
193 struct usb_anchor intr_anchor;
194 struct usb_anchor bulk_anchor;
195 struct usb_anchor isoc_anchor;
196 struct usb_anchor deferred;
197 int tx_in_flight;
198 spinlock_t txlock;
199
200 struct usb_endpoint_descriptor *intr_ep;
201 struct usb_endpoint_descriptor *bulk_tx_ep;
202 struct usb_endpoint_descriptor *bulk_rx_ep;
203 struct usb_endpoint_descriptor *isoc_tx_ep;
204 struct usb_endpoint_descriptor *isoc_rx_ep;
205
206 __u8 cmdreq_type;
207
208 unsigned int sco_num;
209 int isoc_altsetting;
210 int suspend_count;
211 };
212
213 static int inc_tx(struct btusb_data *data)
214 {
215 unsigned long flags;
216 int rv;
217
218 spin_lock_irqsave(&data->txlock, flags);
219 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
220 if (!rv)
221 data->tx_in_flight++;
222 spin_unlock_irqrestore(&data->txlock, flags);
223
224 return rv;
225 }
226
227 static void btusb_intr_complete(struct urb *urb)
228 {
229 struct hci_dev *hdev = urb->context;
230 struct btusb_data *data = hdev->driver_data;
231 int err;
232
233 BT_DBG("%s urb %p status %d count %d", hdev->name,
234 urb, urb->status, urb->actual_length);
235
236 if (!test_bit(HCI_RUNNING, &hdev->flags))
237 return;
238
239 if (urb->status == 0) {
240 hdev->stat.byte_rx += urb->actual_length;
241
242 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
243 urb->transfer_buffer,
244 urb->actual_length) < 0) {
245 BT_ERR("%s corrupted event packet", hdev->name);
246 hdev->stat.err_rx++;
247 }
248 }
249
250 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
251 return;
252
253 usb_mark_last_busy(data->udev);
254 usb_anchor_urb(urb, &data->intr_anchor);
255
256 err = usb_submit_urb(urb, GFP_ATOMIC);
257 if (err < 0) {
258 if (err != -EPERM)
259 BT_ERR("%s urb %p failed to resubmit (%d)",
260 hdev->name, urb, -err);
261 usb_unanchor_urb(urb);
262 }
263 }
264
265 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
266 {
267 struct btusb_data *data = hdev->driver_data;
268 struct urb *urb;
269 unsigned char *buf;
270 unsigned int pipe;
271 int err, size;
272
273 BT_DBG("%s", hdev->name);
274
275 if (!data->intr_ep)
276 return -ENODEV;
277
278 urb = usb_alloc_urb(0, mem_flags);
279 if (!urb)
280 return -ENOMEM;
281
282 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
283
284 buf = kmalloc(size, mem_flags);
285 if (!buf) {
286 usb_free_urb(urb);
287 return -ENOMEM;
288 }
289
290 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
291
292 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
293 btusb_intr_complete, hdev,
294 data->intr_ep->bInterval);
295
296 urb->transfer_flags |= URB_FREE_BUFFER;
297
298 usb_anchor_urb(urb, &data->intr_anchor);
299
300 err = usb_submit_urb(urb, mem_flags);
301 if (err < 0) {
302 BT_ERR("%s urb %p submission failed (%d)",
303 hdev->name, urb, -err);
304 usb_unanchor_urb(urb);
305 }
306
307 usb_free_urb(urb);
308
309 return err;
310 }
311
312 static void btusb_bulk_complete(struct urb *urb)
313 {
314 struct hci_dev *hdev = urb->context;
315 struct btusb_data *data = hdev->driver_data;
316 int err;
317
318 BT_DBG("%s urb %p status %d count %d", hdev->name,
319 urb, urb->status, urb->actual_length);
320
321 if (!test_bit(HCI_RUNNING, &hdev->flags))
322 return;
323
324 if (urb->status == 0) {
325 hdev->stat.byte_rx += urb->actual_length;
326
327 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
328 urb->transfer_buffer,
329 urb->actual_length) < 0) {
330 BT_ERR("%s corrupted ACL packet", hdev->name);
331 hdev->stat.err_rx++;
332 }
333 }
334
335 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
336 return;
337
338 usb_anchor_urb(urb, &data->bulk_anchor);
339 usb_mark_last_busy(data->udev);
340
341 err = usb_submit_urb(urb, GFP_ATOMIC);
342 if (err < 0) {
343 if (err != -EPERM)
344 BT_ERR("%s urb %p failed to resubmit (%d)",
345 hdev->name, urb, -err);
346 usb_unanchor_urb(urb);
347 }
348 }
349
350 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
351 {
352 struct btusb_data *data = hdev->driver_data;
353 struct urb *urb;
354 unsigned char *buf;
355 unsigned int pipe;
356 int err, size = HCI_MAX_FRAME_SIZE;
357
358 BT_DBG("%s", hdev->name);
359
360 if (!data->bulk_rx_ep)
361 return -ENODEV;
362
363 urb = usb_alloc_urb(0, mem_flags);
364 if (!urb)
365 return -ENOMEM;
366
367 buf = kmalloc(size, mem_flags);
368 if (!buf) {
369 usb_free_urb(urb);
370 return -ENOMEM;
371 }
372
373 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
374
375 usb_fill_bulk_urb(urb, data->udev, pipe,
376 buf, size, btusb_bulk_complete, hdev);
377
378 urb->transfer_flags |= URB_FREE_BUFFER;
379
380 usb_mark_last_busy(data->udev);
381 usb_anchor_urb(urb, &data->bulk_anchor);
382
383 err = usb_submit_urb(urb, mem_flags);
384 if (err < 0) {
385 BT_ERR("%s urb %p submission failed (%d)",
386 hdev->name, urb, -err);
387 usb_unanchor_urb(urb);
388 }
389
390 usb_free_urb(urb);
391
392 return err;
393 }
394
395 static void btusb_isoc_complete(struct urb *urb)
396 {
397 struct hci_dev *hdev = urb->context;
398 struct btusb_data *data = hdev->driver_data;
399 int i, err;
400
401 BT_DBG("%s urb %p status %d count %d", hdev->name,
402 urb, urb->status, urb->actual_length);
403
404 if (!test_bit(HCI_RUNNING, &hdev->flags))
405 return;
406
407 if (urb->status == 0) {
408 for (i = 0; i < urb->number_of_packets; i++) {
409 unsigned int offset = urb->iso_frame_desc[i].offset;
410 unsigned int length = urb->iso_frame_desc[i].actual_length;
411
412 if (urb->iso_frame_desc[i].status)
413 continue;
414
415 hdev->stat.byte_rx += length;
416
417 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
418 urb->transfer_buffer + offset,
419 length) < 0) {
420 BT_ERR("%s corrupted SCO packet", hdev->name);
421 hdev->stat.err_rx++;
422 }
423 }
424 }
425
426 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
427 return;
428
429 usb_anchor_urb(urb, &data->isoc_anchor);
430
431 err = usb_submit_urb(urb, GFP_ATOMIC);
432 if (err < 0) {
433 if (err != -EPERM)
434 BT_ERR("%s urb %p failed to resubmit (%d)",
435 hdev->name, urb, -err);
436 usb_unanchor_urb(urb);
437 }
438 }
439
440 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
441 {
442 int i, offset = 0;
443
444 BT_DBG("len %d mtu %d", len, mtu);
445
446 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
447 i++, offset += mtu, len -= mtu) {
448 urb->iso_frame_desc[i].offset = offset;
449 urb->iso_frame_desc[i].length = mtu;
450 }
451
452 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
453 urb->iso_frame_desc[i].offset = offset;
454 urb->iso_frame_desc[i].length = len;
455 i++;
456 }
457
458 urb->number_of_packets = i;
459 }
460
461 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
462 {
463 struct btusb_data *data = hdev->driver_data;
464 struct urb *urb;
465 unsigned char *buf;
466 unsigned int pipe;
467 int err, size;
468
469 BT_DBG("%s", hdev->name);
470
471 if (!data->isoc_rx_ep)
472 return -ENODEV;
473
474 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
475 if (!urb)
476 return -ENOMEM;
477
478 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
479 BTUSB_MAX_ISOC_FRAMES;
480
481 buf = kmalloc(size, mem_flags);
482 if (!buf) {
483 usb_free_urb(urb);
484 return -ENOMEM;
485 }
486
487 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
488
489 urb->dev = data->udev;
490 urb->pipe = pipe;
491 urb->context = hdev;
492 urb->complete = btusb_isoc_complete;
493 urb->interval = data->isoc_rx_ep->bInterval;
494
495 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
496 urb->transfer_buffer = buf;
497 urb->transfer_buffer_length = size;
498
499 __fill_isoc_descriptor(urb, size,
500 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
501
502 usb_anchor_urb(urb, &data->isoc_anchor);
503
504 err = usb_submit_urb(urb, mem_flags);
505 if (err < 0) {
506 BT_ERR("%s urb %p submission failed (%d)",
507 hdev->name, urb, -err);
508 usb_unanchor_urb(urb);
509 }
510
511 usb_free_urb(urb);
512
513 return err;
514 }
515
516 static void btusb_tx_complete(struct urb *urb)
517 {
518 struct sk_buff *skb = urb->context;
519 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
520 struct btusb_data *data = hdev->driver_data;
521
522 BT_DBG("%s urb %p status %d count %d", hdev->name,
523 urb, urb->status, urb->actual_length);
524
525 if (!test_bit(HCI_RUNNING, &hdev->flags))
526 goto done;
527
528 if (!urb->status)
529 hdev->stat.byte_tx += urb->transfer_buffer_length;
530 else
531 hdev->stat.err_tx++;
532
533 done:
534 spin_lock(&data->txlock);
535 data->tx_in_flight--;
536 spin_unlock(&data->txlock);
537
538 kfree(urb->setup_packet);
539
540 kfree_skb(skb);
541 }
542
543 static void btusb_isoc_tx_complete(struct urb *urb)
544 {
545 struct sk_buff *skb = urb->context;
546 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
547
548 BT_DBG("%s urb %p status %d count %d", hdev->name,
549 urb, urb->status, urb->actual_length);
550
551 if (!test_bit(HCI_RUNNING, &hdev->flags))
552 goto done;
553
554 if (!urb->status)
555 hdev->stat.byte_tx += urb->transfer_buffer_length;
556 else
557 hdev->stat.err_tx++;
558
559 done:
560 kfree(urb->setup_packet);
561
562 kfree_skb(skb);
563 }
564
565 static int btusb_open(struct hci_dev *hdev)
566 {
567 struct btusb_data *data = hdev->driver_data;
568 int err;
569
570 BT_DBG("%s", hdev->name);
571
572 err = usb_autopm_get_interface(data->intf);
573 if (err < 0)
574 return err;
575
576 data->intf->needs_remote_wakeup = 1;
577
578 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
579 goto done;
580
581 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
582 goto done;
583
584 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
585 if (err < 0)
586 goto failed;
587
588 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
589 if (err < 0) {
590 usb_kill_anchored_urbs(&data->intr_anchor);
591 goto failed;
592 }
593
594 set_bit(BTUSB_BULK_RUNNING, &data->flags);
595 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
596
597 done:
598 usb_autopm_put_interface(data->intf);
599 return 0;
600
601 failed:
602 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
603 clear_bit(HCI_RUNNING, &hdev->flags);
604 usb_autopm_put_interface(data->intf);
605 return err;
606 }
607
608 static void btusb_stop_traffic(struct btusb_data *data)
609 {
610 usb_kill_anchored_urbs(&data->intr_anchor);
611 usb_kill_anchored_urbs(&data->bulk_anchor);
612 usb_kill_anchored_urbs(&data->isoc_anchor);
613 }
614
615 static int btusb_close(struct hci_dev *hdev)
616 {
617 struct btusb_data *data = hdev->driver_data;
618 int err;
619
620 BT_DBG("%s", hdev->name);
621
622 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
623 return 0;
624
625 cancel_work_sync(&data->work);
626 cancel_work_sync(&data->waker);
627
628 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
629 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
630 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
631
632 btusb_stop_traffic(data);
633 err = usb_autopm_get_interface(data->intf);
634 if (err < 0)
635 goto failed;
636
637 data->intf->needs_remote_wakeup = 0;
638 usb_autopm_put_interface(data->intf);
639
640 failed:
641 usb_scuttle_anchored_urbs(&data->deferred);
642 return 0;
643 }
644
645 static int btusb_flush(struct hci_dev *hdev)
646 {
647 struct btusb_data *data = hdev->driver_data;
648
649 BT_DBG("%s", hdev->name);
650
651 usb_kill_anchored_urbs(&data->tx_anchor);
652
653 return 0;
654 }
655
656 static int btusb_send_frame(struct sk_buff *skb)
657 {
658 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
659 struct btusb_data *data = hdev->driver_data;
660 struct usb_ctrlrequest *dr;
661 struct urb *urb;
662 unsigned int pipe;
663 int err;
664
665 BT_DBG("%s", hdev->name);
666
667 if (!test_bit(HCI_RUNNING, &hdev->flags))
668 return -EBUSY;
669
670 switch (bt_cb(skb)->pkt_type) {
671 case HCI_COMMAND_PKT:
672 urb = usb_alloc_urb(0, GFP_ATOMIC);
673 if (!urb)
674 return -ENOMEM;
675
676 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
677 if (!dr) {
678 usb_free_urb(urb);
679 return -ENOMEM;
680 }
681
682 dr->bRequestType = data->cmdreq_type;
683 dr->bRequest = 0;
684 dr->wIndex = 0;
685 dr->wValue = 0;
686 dr->wLength = __cpu_to_le16(skb->len);
687
688 pipe = usb_sndctrlpipe(data->udev, 0x00);
689
690 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
691 skb->data, skb->len, btusb_tx_complete, skb);
692
693 hdev->stat.cmd_tx++;
694 break;
695
696 case HCI_ACLDATA_PKT:
697 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
698 hdev->conn_hash.le_num < 1))
699 return -ENODEV;
700
701 urb = usb_alloc_urb(0, GFP_ATOMIC);
702 if (!urb)
703 return -ENOMEM;
704
705 pipe = usb_sndbulkpipe(data->udev,
706 data->bulk_tx_ep->bEndpointAddress);
707
708 usb_fill_bulk_urb(urb, data->udev, pipe,
709 skb->data, skb->len, btusb_tx_complete, skb);
710
711 hdev->stat.acl_tx++;
712 break;
713
714 case HCI_SCODATA_PKT:
715 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
716 return -ENODEV;
717
718 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
719 if (!urb)
720 return -ENOMEM;
721
722 pipe = usb_sndisocpipe(data->udev,
723 data->isoc_tx_ep->bEndpointAddress);
724
725 usb_fill_int_urb(urb, data->udev, pipe,
726 skb->data, skb->len, btusb_isoc_tx_complete,
727 skb, data->isoc_tx_ep->bInterval);
728
729 urb->transfer_flags = URB_ISO_ASAP;
730
731 __fill_isoc_descriptor(urb, skb->len,
732 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
733
734 hdev->stat.sco_tx++;
735 goto skip_waking;
736
737 default:
738 return -EILSEQ;
739 }
740
741 err = inc_tx(data);
742 if (err) {
743 usb_anchor_urb(urb, &data->deferred);
744 schedule_work(&data->waker);
745 err = 0;
746 goto done;
747 }
748
749 skip_waking:
750 usb_anchor_urb(urb, &data->tx_anchor);
751
752 err = usb_submit_urb(urb, GFP_ATOMIC);
753 if (err < 0) {
754 BT_ERR("%s urb %p submission failed", hdev->name, urb);
755 kfree(urb->setup_packet);
756 usb_unanchor_urb(urb);
757 } else {
758 usb_mark_last_busy(data->udev);
759 }
760
761 usb_free_urb(urb);
762
763 done:
764 return err;
765 }
766
767 static void btusb_destruct(struct hci_dev *hdev)
768 {
769 struct btusb_data *data = hdev->driver_data;
770
771 BT_DBG("%s", hdev->name);
772
773 kfree(data);
774 }
775
776 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
777 {
778 struct btusb_data *data = hdev->driver_data;
779
780 BT_DBG("%s evt %d", hdev->name, evt);
781
782 if (hdev->conn_hash.sco_num != data->sco_num) {
783 data->sco_num = hdev->conn_hash.sco_num;
784 schedule_work(&data->work);
785 }
786 }
787
788 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
789 {
790 struct btusb_data *data = hdev->driver_data;
791 struct usb_interface *intf = data->isoc;
792 struct usb_endpoint_descriptor *ep_desc;
793 int i, err;
794
795 if (!data->isoc)
796 return -ENODEV;
797
798 err = usb_set_interface(data->udev, 1, altsetting);
799 if (err < 0) {
800 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
801 return err;
802 }
803
804 data->isoc_altsetting = altsetting;
805
806 data->isoc_tx_ep = NULL;
807 data->isoc_rx_ep = NULL;
808
809 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
810 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
811
812 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
813 data->isoc_tx_ep = ep_desc;
814 continue;
815 }
816
817 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
818 data->isoc_rx_ep = ep_desc;
819 continue;
820 }
821 }
822
823 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
824 BT_ERR("%s invalid SCO descriptors", hdev->name);
825 return -ENODEV;
826 }
827
828 return 0;
829 }
830
831 static void btusb_work(struct work_struct *work)
832 {
833 struct btusb_data *data = container_of(work, struct btusb_data, work);
834 struct hci_dev *hdev = data->hdev;
835 int err;
836
837 if (hdev->conn_hash.sco_num > 0) {
838 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
839 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
840 if (err < 0) {
841 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
842 usb_kill_anchored_urbs(&data->isoc_anchor);
843 return;
844 }
845
846 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
847 }
848 if (data->isoc_altsetting != 2) {
849 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
850 usb_kill_anchored_urbs(&data->isoc_anchor);
851
852 if (__set_isoc_interface(hdev, 2) < 0)
853 return;
854 }
855
856 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
857 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
858 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
859 else
860 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
861 }
862 } else {
863 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
864 usb_kill_anchored_urbs(&data->isoc_anchor);
865
866 __set_isoc_interface(hdev, 0);
867 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
868 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
869 }
870 }
871
872 static void btusb_waker(struct work_struct *work)
873 {
874 struct btusb_data *data = container_of(work, struct btusb_data, waker);
875 int err;
876
877 err = usb_autopm_get_interface(data->intf);
878 if (err < 0)
879 return;
880
881 usb_autopm_put_interface(data->intf);
882 }
883
884 static int btusb_probe(struct usb_interface *intf,
885 const struct usb_device_id *id)
886 {
887 struct usb_endpoint_descriptor *ep_desc;
888 struct btusb_data *data;
889 struct hci_dev *hdev;
890 int i, err;
891
892 BT_DBG("intf %p id %p", intf, id);
893
894 /* interface numbers are hardcoded in the spec */
895 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
896 return -ENODEV;
897
898 if (!id->driver_info) {
899 const struct usb_device_id *match;
900 match = usb_match_id(intf, blacklist_table);
901 if (match)
902 id = match;
903 }
904
905 if (id->driver_info == BTUSB_IGNORE)
906 return -ENODEV;
907
908 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
909 return -ENODEV;
910
911 if (ignore_csr && id->driver_info & BTUSB_CSR)
912 return -ENODEV;
913
914 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
915 return -ENODEV;
916
917 data = kzalloc(sizeof(*data), GFP_KERNEL);
918 if (!data)
919 return -ENOMEM;
920
921 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
922 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
923
924 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
925 data->intr_ep = ep_desc;
926 continue;
927 }
928
929 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
930 data->bulk_tx_ep = ep_desc;
931 continue;
932 }
933
934 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
935 data->bulk_rx_ep = ep_desc;
936 continue;
937 }
938 }
939
940 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
941 kfree(data);
942 return -ENODEV;
943 }
944
945 data->cmdreq_type = USB_TYPE_CLASS;
946
947 data->udev = interface_to_usbdev(intf);
948 data->intf = intf;
949
950 spin_lock_init(&data->lock);
951
952 INIT_WORK(&data->work, btusb_work);
953 INIT_WORK(&data->waker, btusb_waker);
954 spin_lock_init(&data->txlock);
955
956 init_usb_anchor(&data->tx_anchor);
957 init_usb_anchor(&data->intr_anchor);
958 init_usb_anchor(&data->bulk_anchor);
959 init_usb_anchor(&data->isoc_anchor);
960 init_usb_anchor(&data->deferred);
961
962 hdev = hci_alloc_dev();
963 if (!hdev) {
964 kfree(data);
965 return -ENOMEM;
966 }
967
968 hdev->bus = HCI_USB;
969 hdev->driver_data = data;
970
971 data->hdev = hdev;
972
973 SET_HCIDEV_DEV(hdev, &intf->dev);
974
975 hdev->open = btusb_open;
976 hdev->close = btusb_close;
977 hdev->flush = btusb_flush;
978 hdev->send = btusb_send_frame;
979 hdev->destruct = btusb_destruct;
980 hdev->notify = btusb_notify;
981
982 hdev->owner = THIS_MODULE;
983
984 /* Interface numbers are hardcoded in the specification */
985 data->isoc = usb_ifnum_to_if(data->udev, 1);
986
987 if (!reset)
988 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
989
990 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
991 if (!disable_scofix)
992 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
993 }
994
995 if (id->driver_info & BTUSB_BROKEN_ISOC)
996 data->isoc = NULL;
997
998 if (id->driver_info & BTUSB_DIGIANSWER) {
999 data->cmdreq_type = USB_TYPE_VENDOR;
1000 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1001 }
1002
1003 if (id->driver_info & BTUSB_CSR) {
1004 struct usb_device *udev = data->udev;
1005
1006 /* Old firmware would otherwise execute USB reset */
1007 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1008 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1009 }
1010
1011 if (id->driver_info & BTUSB_SNIFFER) {
1012 struct usb_device *udev = data->udev;
1013
1014 /* New sniffer firmware has crippled HCI interface */
1015 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1016 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1017
1018 data->isoc = NULL;
1019 }
1020
1021 if (id->driver_info & BTUSB_BCM92035) {
1022 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1023 struct sk_buff *skb;
1024
1025 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1026 if (skb) {
1027 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1028 skb_queue_tail(&hdev->driver_init, skb);
1029 }
1030 }
1031
1032 if (data->isoc) {
1033 err = usb_driver_claim_interface(&btusb_driver,
1034 data->isoc, data);
1035 if (err < 0) {
1036 hci_free_dev(hdev);
1037 kfree(data);
1038 return err;
1039 }
1040 }
1041
1042 err = hci_register_dev(hdev);
1043 if (err < 0) {
1044 hci_free_dev(hdev);
1045 kfree(data);
1046 return err;
1047 }
1048
1049 usb_set_intfdata(intf, data);
1050
1051 return 0;
1052 }
1053
1054 static void btusb_disconnect(struct usb_interface *intf)
1055 {
1056 struct btusb_data *data = usb_get_intfdata(intf);
1057 struct hci_dev *hdev;
1058
1059 BT_DBG("intf %p", intf);
1060
1061 if (!data)
1062 return;
1063
1064 hdev = data->hdev;
1065
1066 __hci_dev_hold(hdev);
1067
1068 usb_set_intfdata(data->intf, NULL);
1069
1070 if (data->isoc)
1071 usb_set_intfdata(data->isoc, NULL);
1072
1073 hci_unregister_dev(hdev);
1074
1075 if (intf == data->isoc)
1076 usb_driver_release_interface(&btusb_driver, data->intf);
1077 else if (data->isoc)
1078 usb_driver_release_interface(&btusb_driver, data->isoc);
1079
1080 __hci_dev_put(hdev);
1081
1082 hci_free_dev(hdev);
1083 }
1084
1085 #ifdef CONFIG_PM
1086 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1087 {
1088 struct btusb_data *data = usb_get_intfdata(intf);
1089
1090 BT_DBG("intf %p", intf);
1091
1092 if (data->suspend_count++)
1093 return 0;
1094
1095 spin_lock_irq(&data->txlock);
1096 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1097 set_bit(BTUSB_SUSPENDING, &data->flags);
1098 spin_unlock_irq(&data->txlock);
1099 } else {
1100 spin_unlock_irq(&data->txlock);
1101 data->suspend_count--;
1102 return -EBUSY;
1103 }
1104
1105 cancel_work_sync(&data->work);
1106
1107 btusb_stop_traffic(data);
1108 usb_kill_anchored_urbs(&data->tx_anchor);
1109
1110 return 0;
1111 }
1112
1113 static void play_deferred(struct btusb_data *data)
1114 {
1115 struct urb *urb;
1116 int err;
1117
1118 while ((urb = usb_get_from_anchor(&data->deferred))) {
1119 err = usb_submit_urb(urb, GFP_ATOMIC);
1120 if (err < 0)
1121 break;
1122
1123 data->tx_in_flight++;
1124 }
1125 usb_scuttle_anchored_urbs(&data->deferred);
1126 }
1127
1128 static int btusb_resume(struct usb_interface *intf)
1129 {
1130 struct btusb_data *data = usb_get_intfdata(intf);
1131 struct hci_dev *hdev = data->hdev;
1132 int err = 0;
1133
1134 BT_DBG("intf %p", intf);
1135
1136 if (--data->suspend_count)
1137 return 0;
1138
1139 if (!test_bit(HCI_RUNNING, &hdev->flags))
1140 goto done;
1141
1142 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1143 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1144 if (err < 0) {
1145 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1146 goto failed;
1147 }
1148 }
1149
1150 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1151 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1152 if (err < 0) {
1153 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1154 goto failed;
1155 }
1156
1157 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1158 }
1159
1160 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1161 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1162 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1163 else
1164 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1165 }
1166
1167 spin_lock_irq(&data->txlock);
1168 play_deferred(data);
1169 clear_bit(BTUSB_SUSPENDING, &data->flags);
1170 spin_unlock_irq(&data->txlock);
1171 schedule_work(&data->work);
1172
1173 return 0;
1174
1175 failed:
1176 usb_scuttle_anchored_urbs(&data->deferred);
1177 done:
1178 spin_lock_irq(&data->txlock);
1179 clear_bit(BTUSB_SUSPENDING, &data->flags);
1180 spin_unlock_irq(&data->txlock);
1181
1182 return err;
1183 }
1184 #endif
1185
1186 static struct usb_driver btusb_driver = {
1187 .name = "btusb",
1188 .probe = btusb_probe,
1189 .disconnect = btusb_disconnect,
1190 #ifdef CONFIG_PM
1191 .suspend = btusb_suspend,
1192 .resume = btusb_resume,
1193 #endif
1194 .id_table = btusb_table,
1195 .supports_autosuspend = 1,
1196 };
1197
1198 static int __init btusb_init(void)
1199 {
1200 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1201
1202 return usb_register(&btusb_driver);
1203 }
1204
1205 static void __exit btusb_exit(void)
1206 {
1207 usb_deregister(&btusb_driver);
1208 }
1209
1210 module_init(btusb_init);
1211 module_exit(btusb_exit);
1212
1213 module_param(ignore_dga, bool, 0644);
1214 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1215
1216 module_param(ignore_csr, bool, 0644);
1217 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1218
1219 module_param(ignore_sniffer, bool, 0644);
1220 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1221
1222 module_param(disable_scofix, bool, 0644);
1223 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1224
1225 module_param(force_scofix, bool, 0644);
1226 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1227
1228 module_param(reset, bool, 0644);
1229 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1230
1231 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1232 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1233 MODULE_VERSION(VERSION);
1234 MODULE_LICENSE("GPL");
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