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Merge tag 'musb-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi...
[deliverable/linux.git] / drivers / bluetooth / btusb.c
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static bool ignore_dga;
41 static bool ignore_csr;
42 static bool ignore_sniffer;
43 static bool disable_scofix;
44 static bool force_scofix;
45
46 static bool 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 /* Broadcom SoftSailing reporting vendor specific */
64 { USB_DEVICE(0x0a5c, 0x21e1) },
65
66 /* Apple MacBookPro 7,1 */
67 { USB_DEVICE(0x05ac, 0x8213) },
68
69 /* Apple iMac11,1 */
70 { USB_DEVICE(0x05ac, 0x8215) },
71
72 /* Apple MacBookPro6,2 */
73 { USB_DEVICE(0x05ac, 0x8218) },
74
75 /* Apple MacBookAir3,1, MacBookAir3,2 */
76 { USB_DEVICE(0x05ac, 0x821b) },
77
78 /* Apple MacBookAir4,1 */
79 { USB_DEVICE(0x05ac, 0x821f) },
80
81 /* Apple MacBookPro8,2 */
82 { USB_DEVICE(0x05ac, 0x821a) },
83
84 /* Apple MacMini5,1 */
85 { USB_DEVICE(0x05ac, 0x8281) },
86
87 /* AVM BlueFRITZ! USB v2.0 */
88 { USB_DEVICE(0x057c, 0x3800) },
89
90 /* Bluetooth Ultraport Module from IBM */
91 { USB_DEVICE(0x04bf, 0x030a) },
92
93 /* ALPS Modules with non-standard id */
94 { USB_DEVICE(0x044e, 0x3001) },
95 { USB_DEVICE(0x044e, 0x3002) },
96
97 /* Ericsson with non-standard id */
98 { USB_DEVICE(0x0bdb, 0x1002) },
99
100 /* Canyon CN-BTU1 with HID interfaces */
101 { USB_DEVICE(0x0c10, 0x0000) },
102
103 /* Broadcom BCM20702A0 */
104 { USB_DEVICE(0x0489, 0xe042) },
105 { USB_DEVICE(0x0a5c, 0x21e3) },
106 { USB_DEVICE(0x0a5c, 0x21e6) },
107 { USB_DEVICE(0x0a5c, 0x21e8) },
108 { USB_DEVICE(0x0a5c, 0x21f3) },
109 { USB_DEVICE(0x413c, 0x8197) },
110
111 /* Foxconn - Hon Hai */
112 { USB_DEVICE(0x0489, 0xe033) },
113
114 { } /* Terminating entry */
115 };
116
117 MODULE_DEVICE_TABLE(usb, btusb_table);
118
119 static struct usb_device_id blacklist_table[] = {
120 /* CSR BlueCore devices */
121 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
122
123 /* Broadcom BCM2033 without firmware */
124 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
125
126 /* Atheros 3011 with sflash firmware */
127 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
128 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
129 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
130 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
131
132 /* Atheros AR9285 Malbec with sflash firmware */
133 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
134
135 /* Atheros 3012 with sflash firmware */
136 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
142
143 /* Atheros AR5BBU12 with sflash firmware */
144 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
145
146 /* Broadcom BCM2035 */
147 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
148 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
149 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
150
151 /* Broadcom BCM2045 */
152 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
153 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
154
155 /* IBM/Lenovo ThinkPad with Broadcom chip */
156 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
157 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159 /* HP laptop with Broadcom chip */
160 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162 /* Dell laptop with Broadcom chip */
163 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
164
165 /* Dell Wireless 370 and 410 devices */
166 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
167 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
168
169 /* Belkin F8T012 and F8T013 devices */
170 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
171 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173 /* Asus WL-BTD202 device */
174 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
175
176 /* Kensington Bluetooth USB adapter */
177 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
178
179 /* RTX Telecom based adapters with buggy SCO support */
180 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
181 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
182
183 /* CONWISE Technology based adapters with buggy SCO support */
184 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
185
186 /* Digianswer devices */
187 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
188 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
189
190 /* CSR BlueCore Bluetooth Sniffer */
191 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
192
193 /* Frontline ComProbe Bluetooth Sniffer */
194 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
195
196 { } /* Terminating entry */
197 };
198
199 #define BTUSB_MAX_ISOC_FRAMES 10
200
201 #define BTUSB_INTR_RUNNING 0
202 #define BTUSB_BULK_RUNNING 1
203 #define BTUSB_ISOC_RUNNING 2
204 #define BTUSB_SUSPENDING 3
205 #define BTUSB_DID_ISO_RESUME 4
206
207 struct btusb_data {
208 struct hci_dev *hdev;
209 struct usb_device *udev;
210 struct usb_interface *intf;
211 struct usb_interface *isoc;
212
213 spinlock_t lock;
214
215 unsigned long flags;
216
217 struct work_struct work;
218 struct work_struct waker;
219
220 struct usb_anchor tx_anchor;
221 struct usb_anchor intr_anchor;
222 struct usb_anchor bulk_anchor;
223 struct usb_anchor isoc_anchor;
224 struct usb_anchor deferred;
225 int tx_in_flight;
226 spinlock_t txlock;
227
228 struct usb_endpoint_descriptor *intr_ep;
229 struct usb_endpoint_descriptor *bulk_tx_ep;
230 struct usb_endpoint_descriptor *bulk_rx_ep;
231 struct usb_endpoint_descriptor *isoc_tx_ep;
232 struct usb_endpoint_descriptor *isoc_rx_ep;
233
234 __u8 cmdreq_type;
235
236 unsigned int sco_num;
237 int isoc_altsetting;
238 int suspend_count;
239 };
240
241 static int inc_tx(struct btusb_data *data)
242 {
243 unsigned long flags;
244 int rv;
245
246 spin_lock_irqsave(&data->txlock, flags);
247 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
248 if (!rv)
249 data->tx_in_flight++;
250 spin_unlock_irqrestore(&data->txlock, flags);
251
252 return rv;
253 }
254
255 static void btusb_intr_complete(struct urb *urb)
256 {
257 struct hci_dev *hdev = urb->context;
258 struct btusb_data *data = hci_get_drvdata(hdev);
259 int err;
260
261 BT_DBG("%s urb %p status %d count %d", hdev->name,
262 urb, urb->status, urb->actual_length);
263
264 if (!test_bit(HCI_RUNNING, &hdev->flags))
265 return;
266
267 if (urb->status == 0) {
268 hdev->stat.byte_rx += urb->actual_length;
269
270 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
271 urb->transfer_buffer,
272 urb->actual_length) < 0) {
273 BT_ERR("%s corrupted event packet", hdev->name);
274 hdev->stat.err_rx++;
275 }
276 }
277
278 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
279 return;
280
281 usb_mark_last_busy(data->udev);
282 usb_anchor_urb(urb, &data->intr_anchor);
283
284 err = usb_submit_urb(urb, GFP_ATOMIC);
285 if (err < 0) {
286 /* -EPERM: urb is being killed;
287 * -ENODEV: device got disconnected */
288 if (err != -EPERM && err != -ENODEV)
289 BT_ERR("%s urb %p failed to resubmit (%d)",
290 hdev->name, urb, -err);
291 usb_unanchor_urb(urb);
292 }
293 }
294
295 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
296 {
297 struct btusb_data *data = hci_get_drvdata(hdev);
298 struct urb *urb;
299 unsigned char *buf;
300 unsigned int pipe;
301 int err, size;
302
303 BT_DBG("%s", hdev->name);
304
305 if (!data->intr_ep)
306 return -ENODEV;
307
308 urb = usb_alloc_urb(0, mem_flags);
309 if (!urb)
310 return -ENOMEM;
311
312 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
313
314 buf = kmalloc(size, mem_flags);
315 if (!buf) {
316 usb_free_urb(urb);
317 return -ENOMEM;
318 }
319
320 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
321
322 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
323 btusb_intr_complete, hdev,
324 data->intr_ep->bInterval);
325
326 urb->transfer_flags |= URB_FREE_BUFFER;
327
328 usb_anchor_urb(urb, &data->intr_anchor);
329
330 err = usb_submit_urb(urb, mem_flags);
331 if (err < 0) {
332 if (err != -EPERM && err != -ENODEV)
333 BT_ERR("%s urb %p submission failed (%d)",
334 hdev->name, urb, -err);
335 usb_unanchor_urb(urb);
336 }
337
338 usb_free_urb(urb);
339
340 return err;
341 }
342
343 static void btusb_bulk_complete(struct urb *urb)
344 {
345 struct hci_dev *hdev = urb->context;
346 struct btusb_data *data = hci_get_drvdata(hdev);
347 int err;
348
349 BT_DBG("%s urb %p status %d count %d", hdev->name,
350 urb, urb->status, urb->actual_length);
351
352 if (!test_bit(HCI_RUNNING, &hdev->flags))
353 return;
354
355 if (urb->status == 0) {
356 hdev->stat.byte_rx += urb->actual_length;
357
358 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
359 urb->transfer_buffer,
360 urb->actual_length) < 0) {
361 BT_ERR("%s corrupted ACL packet", hdev->name);
362 hdev->stat.err_rx++;
363 }
364 }
365
366 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
367 return;
368
369 usb_anchor_urb(urb, &data->bulk_anchor);
370 usb_mark_last_busy(data->udev);
371
372 err = usb_submit_urb(urb, GFP_ATOMIC);
373 if (err < 0) {
374 /* -EPERM: urb is being killed;
375 * -ENODEV: device got disconnected */
376 if (err != -EPERM && err != -ENODEV)
377 BT_ERR("%s urb %p failed to resubmit (%d)",
378 hdev->name, urb, -err);
379 usb_unanchor_urb(urb);
380 }
381 }
382
383 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
384 {
385 struct btusb_data *data = hci_get_drvdata(hdev);
386 struct urb *urb;
387 unsigned char *buf;
388 unsigned int pipe;
389 int err, size = HCI_MAX_FRAME_SIZE;
390
391 BT_DBG("%s", hdev->name);
392
393 if (!data->bulk_rx_ep)
394 return -ENODEV;
395
396 urb = usb_alloc_urb(0, mem_flags);
397 if (!urb)
398 return -ENOMEM;
399
400 buf = kmalloc(size, mem_flags);
401 if (!buf) {
402 usb_free_urb(urb);
403 return -ENOMEM;
404 }
405
406 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
407
408 usb_fill_bulk_urb(urb, data->udev, pipe,
409 buf, size, btusb_bulk_complete, hdev);
410
411 urb->transfer_flags |= URB_FREE_BUFFER;
412
413 usb_mark_last_busy(data->udev);
414 usb_anchor_urb(urb, &data->bulk_anchor);
415
416 err = usb_submit_urb(urb, mem_flags);
417 if (err < 0) {
418 if (err != -EPERM && err != -ENODEV)
419 BT_ERR("%s urb %p submission failed (%d)",
420 hdev->name, urb, -err);
421 usb_unanchor_urb(urb);
422 }
423
424 usb_free_urb(urb);
425
426 return err;
427 }
428
429 static void btusb_isoc_complete(struct urb *urb)
430 {
431 struct hci_dev *hdev = urb->context;
432 struct btusb_data *data = hci_get_drvdata(hdev);
433 int i, err;
434
435 BT_DBG("%s urb %p status %d count %d", hdev->name,
436 urb, urb->status, urb->actual_length);
437
438 if (!test_bit(HCI_RUNNING, &hdev->flags))
439 return;
440
441 if (urb->status == 0) {
442 for (i = 0; i < urb->number_of_packets; i++) {
443 unsigned int offset = urb->iso_frame_desc[i].offset;
444 unsigned int length = urb->iso_frame_desc[i].actual_length;
445
446 if (urb->iso_frame_desc[i].status)
447 continue;
448
449 hdev->stat.byte_rx += length;
450
451 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
452 urb->transfer_buffer + offset,
453 length) < 0) {
454 BT_ERR("%s corrupted SCO packet", hdev->name);
455 hdev->stat.err_rx++;
456 }
457 }
458 }
459
460 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
461 return;
462
463 usb_anchor_urb(urb, &data->isoc_anchor);
464
465 err = usb_submit_urb(urb, GFP_ATOMIC);
466 if (err < 0) {
467 /* -EPERM: urb is being killed;
468 * -ENODEV: device got disconnected */
469 if (err != -EPERM && err != -ENODEV)
470 BT_ERR("%s urb %p failed to resubmit (%d)",
471 hdev->name, urb, -err);
472 usb_unanchor_urb(urb);
473 }
474 }
475
476 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
477 {
478 int i, offset = 0;
479
480 BT_DBG("len %d mtu %d", len, mtu);
481
482 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
483 i++, offset += mtu, len -= mtu) {
484 urb->iso_frame_desc[i].offset = offset;
485 urb->iso_frame_desc[i].length = mtu;
486 }
487
488 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
489 urb->iso_frame_desc[i].offset = offset;
490 urb->iso_frame_desc[i].length = len;
491 i++;
492 }
493
494 urb->number_of_packets = i;
495 }
496
497 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
498 {
499 struct btusb_data *data = hci_get_drvdata(hdev);
500 struct urb *urb;
501 unsigned char *buf;
502 unsigned int pipe;
503 int err, size;
504
505 BT_DBG("%s", hdev->name);
506
507 if (!data->isoc_rx_ep)
508 return -ENODEV;
509
510 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
511 if (!urb)
512 return -ENOMEM;
513
514 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
515 BTUSB_MAX_ISOC_FRAMES;
516
517 buf = kmalloc(size, mem_flags);
518 if (!buf) {
519 usb_free_urb(urb);
520 return -ENOMEM;
521 }
522
523 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
524
525 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
526 hdev, data->isoc_rx_ep->bInterval);
527
528 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
529
530 __fill_isoc_descriptor(urb, size,
531 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
532
533 usb_anchor_urb(urb, &data->isoc_anchor);
534
535 err = usb_submit_urb(urb, mem_flags);
536 if (err < 0) {
537 if (err != -EPERM && err != -ENODEV)
538 BT_ERR("%s urb %p submission failed (%d)",
539 hdev->name, urb, -err);
540 usb_unanchor_urb(urb);
541 }
542
543 usb_free_urb(urb);
544
545 return err;
546 }
547
548 static void btusb_tx_complete(struct urb *urb)
549 {
550 struct sk_buff *skb = urb->context;
551 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
552 struct btusb_data *data = hci_get_drvdata(hdev);
553
554 BT_DBG("%s urb %p status %d count %d", hdev->name,
555 urb, urb->status, urb->actual_length);
556
557 if (!test_bit(HCI_RUNNING, &hdev->flags))
558 goto done;
559
560 if (!urb->status)
561 hdev->stat.byte_tx += urb->transfer_buffer_length;
562 else
563 hdev->stat.err_tx++;
564
565 done:
566 spin_lock(&data->txlock);
567 data->tx_in_flight--;
568 spin_unlock(&data->txlock);
569
570 kfree(urb->setup_packet);
571
572 kfree_skb(skb);
573 }
574
575 static void btusb_isoc_tx_complete(struct urb *urb)
576 {
577 struct sk_buff *skb = urb->context;
578 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
579
580 BT_DBG("%s urb %p status %d count %d", hdev->name,
581 urb, urb->status, urb->actual_length);
582
583 if (!test_bit(HCI_RUNNING, &hdev->flags))
584 goto done;
585
586 if (!urb->status)
587 hdev->stat.byte_tx += urb->transfer_buffer_length;
588 else
589 hdev->stat.err_tx++;
590
591 done:
592 kfree(urb->setup_packet);
593
594 kfree_skb(skb);
595 }
596
597 static int btusb_open(struct hci_dev *hdev)
598 {
599 struct btusb_data *data = hci_get_drvdata(hdev);
600 int err;
601
602 BT_DBG("%s", hdev->name);
603
604 err = usb_autopm_get_interface(data->intf);
605 if (err < 0)
606 return err;
607
608 data->intf->needs_remote_wakeup = 1;
609
610 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
611 goto done;
612
613 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
614 goto done;
615
616 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
617 if (err < 0)
618 goto failed;
619
620 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
621 if (err < 0) {
622 usb_kill_anchored_urbs(&data->intr_anchor);
623 goto failed;
624 }
625
626 set_bit(BTUSB_BULK_RUNNING, &data->flags);
627 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
628
629 done:
630 usb_autopm_put_interface(data->intf);
631 return 0;
632
633 failed:
634 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
635 clear_bit(HCI_RUNNING, &hdev->flags);
636 usb_autopm_put_interface(data->intf);
637 return err;
638 }
639
640 static void btusb_stop_traffic(struct btusb_data *data)
641 {
642 usb_kill_anchored_urbs(&data->intr_anchor);
643 usb_kill_anchored_urbs(&data->bulk_anchor);
644 usb_kill_anchored_urbs(&data->isoc_anchor);
645 }
646
647 static int btusb_close(struct hci_dev *hdev)
648 {
649 struct btusb_data *data = hci_get_drvdata(hdev);
650 int err;
651
652 BT_DBG("%s", hdev->name);
653
654 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
655 return 0;
656
657 cancel_work_sync(&data->work);
658 cancel_work_sync(&data->waker);
659
660 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
661 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
662 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
663
664 btusb_stop_traffic(data);
665 err = usb_autopm_get_interface(data->intf);
666 if (err < 0)
667 goto failed;
668
669 data->intf->needs_remote_wakeup = 0;
670 usb_autopm_put_interface(data->intf);
671
672 failed:
673 usb_scuttle_anchored_urbs(&data->deferred);
674 return 0;
675 }
676
677 static int btusb_flush(struct hci_dev *hdev)
678 {
679 struct btusb_data *data = hci_get_drvdata(hdev);
680
681 BT_DBG("%s", hdev->name);
682
683 usb_kill_anchored_urbs(&data->tx_anchor);
684
685 return 0;
686 }
687
688 static int btusb_send_frame(struct sk_buff *skb)
689 {
690 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
691 struct btusb_data *data = hci_get_drvdata(hdev);
692 struct usb_ctrlrequest *dr;
693 struct urb *urb;
694 unsigned int pipe;
695 int err;
696
697 BT_DBG("%s", hdev->name);
698
699 if (!test_bit(HCI_RUNNING, &hdev->flags))
700 return -EBUSY;
701
702 switch (bt_cb(skb)->pkt_type) {
703 case HCI_COMMAND_PKT:
704 urb = usb_alloc_urb(0, GFP_ATOMIC);
705 if (!urb)
706 return -ENOMEM;
707
708 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
709 if (!dr) {
710 usb_free_urb(urb);
711 return -ENOMEM;
712 }
713
714 dr->bRequestType = data->cmdreq_type;
715 dr->bRequest = 0;
716 dr->wIndex = 0;
717 dr->wValue = 0;
718 dr->wLength = __cpu_to_le16(skb->len);
719
720 pipe = usb_sndctrlpipe(data->udev, 0x00);
721
722 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
723 skb->data, skb->len, btusb_tx_complete, skb);
724
725 hdev->stat.cmd_tx++;
726 break;
727
728 case HCI_ACLDATA_PKT:
729 if (!data->bulk_tx_ep)
730 return -ENODEV;
731
732 urb = usb_alloc_urb(0, GFP_ATOMIC);
733 if (!urb)
734 return -ENOMEM;
735
736 pipe = usb_sndbulkpipe(data->udev,
737 data->bulk_tx_ep->bEndpointAddress);
738
739 usb_fill_bulk_urb(urb, data->udev, pipe,
740 skb->data, skb->len, btusb_tx_complete, skb);
741
742 hdev->stat.acl_tx++;
743 break;
744
745 case HCI_SCODATA_PKT:
746 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
747 return -ENODEV;
748
749 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
750 if (!urb)
751 return -ENOMEM;
752
753 pipe = usb_sndisocpipe(data->udev,
754 data->isoc_tx_ep->bEndpointAddress);
755
756 usb_fill_int_urb(urb, data->udev, pipe,
757 skb->data, skb->len, btusb_isoc_tx_complete,
758 skb, data->isoc_tx_ep->bInterval);
759
760 urb->transfer_flags = URB_ISO_ASAP;
761
762 __fill_isoc_descriptor(urb, skb->len,
763 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
764
765 hdev->stat.sco_tx++;
766 goto skip_waking;
767
768 default:
769 return -EILSEQ;
770 }
771
772 err = inc_tx(data);
773 if (err) {
774 usb_anchor_urb(urb, &data->deferred);
775 schedule_work(&data->waker);
776 err = 0;
777 goto done;
778 }
779
780 skip_waking:
781 usb_anchor_urb(urb, &data->tx_anchor);
782
783 err = usb_submit_urb(urb, GFP_ATOMIC);
784 if (err < 0) {
785 if (err != -EPERM && err != -ENODEV)
786 BT_ERR("%s urb %p submission failed (%d)",
787 hdev->name, urb, -err);
788 kfree(urb->setup_packet);
789 usb_unanchor_urb(urb);
790 } else {
791 usb_mark_last_busy(data->udev);
792 }
793
794 done:
795 usb_free_urb(urb);
796 return err;
797 }
798
799 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
800 {
801 struct btusb_data *data = hci_get_drvdata(hdev);
802
803 BT_DBG("%s evt %d", hdev->name, evt);
804
805 if (hdev->conn_hash.sco_num != data->sco_num) {
806 data->sco_num = hdev->conn_hash.sco_num;
807 schedule_work(&data->work);
808 }
809 }
810
811 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
812 {
813 struct btusb_data *data = hci_get_drvdata(hdev);
814 struct usb_interface *intf = data->isoc;
815 struct usb_endpoint_descriptor *ep_desc;
816 int i, err;
817
818 if (!data->isoc)
819 return -ENODEV;
820
821 err = usb_set_interface(data->udev, 1, altsetting);
822 if (err < 0) {
823 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
824 return err;
825 }
826
827 data->isoc_altsetting = altsetting;
828
829 data->isoc_tx_ep = NULL;
830 data->isoc_rx_ep = NULL;
831
832 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
833 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
834
835 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
836 data->isoc_tx_ep = ep_desc;
837 continue;
838 }
839
840 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
841 data->isoc_rx_ep = ep_desc;
842 continue;
843 }
844 }
845
846 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
847 BT_ERR("%s invalid SCO descriptors", hdev->name);
848 return -ENODEV;
849 }
850
851 return 0;
852 }
853
854 static void btusb_work(struct work_struct *work)
855 {
856 struct btusb_data *data = container_of(work, struct btusb_data, work);
857 struct hci_dev *hdev = data->hdev;
858 int err;
859
860 if (hdev->conn_hash.sco_num > 0) {
861 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
862 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
863 if (err < 0) {
864 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
865 usb_kill_anchored_urbs(&data->isoc_anchor);
866 return;
867 }
868
869 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
870 }
871 if (data->isoc_altsetting != 2) {
872 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
873 usb_kill_anchored_urbs(&data->isoc_anchor);
874
875 if (__set_isoc_interface(hdev, 2) < 0)
876 return;
877 }
878
879 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
880 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
881 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
882 else
883 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
884 }
885 } else {
886 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
887 usb_kill_anchored_urbs(&data->isoc_anchor);
888
889 __set_isoc_interface(hdev, 0);
890 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
891 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
892 }
893 }
894
895 static void btusb_waker(struct work_struct *work)
896 {
897 struct btusb_data *data = container_of(work, struct btusb_data, waker);
898 int err;
899
900 err = usb_autopm_get_interface(data->intf);
901 if (err < 0)
902 return;
903
904 usb_autopm_put_interface(data->intf);
905 }
906
907 static int btusb_probe(struct usb_interface *intf,
908 const struct usb_device_id *id)
909 {
910 struct usb_endpoint_descriptor *ep_desc;
911 struct btusb_data *data;
912 struct hci_dev *hdev;
913 int i, err;
914
915 BT_DBG("intf %p id %p", intf, id);
916
917 /* interface numbers are hardcoded in the spec */
918 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
919 return -ENODEV;
920
921 if (!id->driver_info) {
922 const struct usb_device_id *match;
923 match = usb_match_id(intf, blacklist_table);
924 if (match)
925 id = match;
926 }
927
928 if (id->driver_info == BTUSB_IGNORE)
929 return -ENODEV;
930
931 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
932 return -ENODEV;
933
934 if (ignore_csr && id->driver_info & BTUSB_CSR)
935 return -ENODEV;
936
937 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
938 return -ENODEV;
939
940 if (id->driver_info & BTUSB_ATH3012) {
941 struct usb_device *udev = interface_to_usbdev(intf);
942
943 /* Old firmware would otherwise let ath3k driver load
944 * patch and sysconfig files */
945 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
946 return -ENODEV;
947 }
948
949 data = kzalloc(sizeof(*data), GFP_KERNEL);
950 if (!data)
951 return -ENOMEM;
952
953 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
954 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
955
956 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
957 data->intr_ep = ep_desc;
958 continue;
959 }
960
961 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
962 data->bulk_tx_ep = ep_desc;
963 continue;
964 }
965
966 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
967 data->bulk_rx_ep = ep_desc;
968 continue;
969 }
970 }
971
972 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
973 kfree(data);
974 return -ENODEV;
975 }
976
977 data->cmdreq_type = USB_TYPE_CLASS;
978
979 data->udev = interface_to_usbdev(intf);
980 data->intf = intf;
981
982 spin_lock_init(&data->lock);
983
984 INIT_WORK(&data->work, btusb_work);
985 INIT_WORK(&data->waker, btusb_waker);
986 spin_lock_init(&data->txlock);
987
988 init_usb_anchor(&data->tx_anchor);
989 init_usb_anchor(&data->intr_anchor);
990 init_usb_anchor(&data->bulk_anchor);
991 init_usb_anchor(&data->isoc_anchor);
992 init_usb_anchor(&data->deferred);
993
994 hdev = hci_alloc_dev();
995 if (!hdev) {
996 kfree(data);
997 return -ENOMEM;
998 }
999
1000 hdev->bus = HCI_USB;
1001 hci_set_drvdata(hdev, data);
1002
1003 data->hdev = hdev;
1004
1005 SET_HCIDEV_DEV(hdev, &intf->dev);
1006
1007 hdev->open = btusb_open;
1008 hdev->close = btusb_close;
1009 hdev->flush = btusb_flush;
1010 hdev->send = btusb_send_frame;
1011 hdev->notify = btusb_notify;
1012
1013 /* Interface numbers are hardcoded in the specification */
1014 data->isoc = usb_ifnum_to_if(data->udev, 1);
1015
1016 if (!reset)
1017 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1018
1019 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1020 if (!disable_scofix)
1021 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1022 }
1023
1024 if (id->driver_info & BTUSB_BROKEN_ISOC)
1025 data->isoc = NULL;
1026
1027 if (id->driver_info & BTUSB_DIGIANSWER) {
1028 data->cmdreq_type = USB_TYPE_VENDOR;
1029 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1030 }
1031
1032 if (id->driver_info & BTUSB_CSR) {
1033 struct usb_device *udev = data->udev;
1034
1035 /* Old firmware would otherwise execute USB reset */
1036 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1037 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1038 }
1039
1040 if (id->driver_info & BTUSB_SNIFFER) {
1041 struct usb_device *udev = data->udev;
1042
1043 /* New sniffer firmware has crippled HCI interface */
1044 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1045 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1046
1047 data->isoc = NULL;
1048 }
1049
1050 if (id->driver_info & BTUSB_BCM92035) {
1051 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1052 struct sk_buff *skb;
1053
1054 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1055 if (skb) {
1056 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1057 skb_queue_tail(&hdev->driver_init, skb);
1058 }
1059 }
1060
1061 if (data->isoc) {
1062 err = usb_driver_claim_interface(&btusb_driver,
1063 data->isoc, data);
1064 if (err < 0) {
1065 hci_free_dev(hdev);
1066 kfree(data);
1067 return err;
1068 }
1069 }
1070
1071 err = hci_register_dev(hdev);
1072 if (err < 0) {
1073 hci_free_dev(hdev);
1074 kfree(data);
1075 return err;
1076 }
1077
1078 usb_set_intfdata(intf, data);
1079
1080 return 0;
1081 }
1082
1083 static void btusb_disconnect(struct usb_interface *intf)
1084 {
1085 struct btusb_data *data = usb_get_intfdata(intf);
1086 struct hci_dev *hdev;
1087
1088 BT_DBG("intf %p", intf);
1089
1090 if (!data)
1091 return;
1092
1093 hdev = data->hdev;
1094 usb_set_intfdata(data->intf, NULL);
1095
1096 if (data->isoc)
1097 usb_set_intfdata(data->isoc, NULL);
1098
1099 hci_unregister_dev(hdev);
1100
1101 if (intf == data->isoc)
1102 usb_driver_release_interface(&btusb_driver, data->intf);
1103 else if (data->isoc)
1104 usb_driver_release_interface(&btusb_driver, data->isoc);
1105
1106 hci_free_dev(hdev);
1107 kfree(data);
1108 }
1109
1110 #ifdef CONFIG_PM
1111 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1112 {
1113 struct btusb_data *data = usb_get_intfdata(intf);
1114
1115 BT_DBG("intf %p", intf);
1116
1117 if (data->suspend_count++)
1118 return 0;
1119
1120 spin_lock_irq(&data->txlock);
1121 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1122 set_bit(BTUSB_SUSPENDING, &data->flags);
1123 spin_unlock_irq(&data->txlock);
1124 } else {
1125 spin_unlock_irq(&data->txlock);
1126 data->suspend_count--;
1127 return -EBUSY;
1128 }
1129
1130 cancel_work_sync(&data->work);
1131
1132 btusb_stop_traffic(data);
1133 usb_kill_anchored_urbs(&data->tx_anchor);
1134
1135 return 0;
1136 }
1137
1138 static void play_deferred(struct btusb_data *data)
1139 {
1140 struct urb *urb;
1141 int err;
1142
1143 while ((urb = usb_get_from_anchor(&data->deferred))) {
1144 err = usb_submit_urb(urb, GFP_ATOMIC);
1145 if (err < 0)
1146 break;
1147
1148 data->tx_in_flight++;
1149 }
1150 usb_scuttle_anchored_urbs(&data->deferred);
1151 }
1152
1153 static int btusb_resume(struct usb_interface *intf)
1154 {
1155 struct btusb_data *data = usb_get_intfdata(intf);
1156 struct hci_dev *hdev = data->hdev;
1157 int err = 0;
1158
1159 BT_DBG("intf %p", intf);
1160
1161 if (--data->suspend_count)
1162 return 0;
1163
1164 if (!test_bit(HCI_RUNNING, &hdev->flags))
1165 goto done;
1166
1167 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1168 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1169 if (err < 0) {
1170 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1171 goto failed;
1172 }
1173 }
1174
1175 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1176 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1177 if (err < 0) {
1178 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1179 goto failed;
1180 }
1181
1182 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183 }
1184
1185 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1186 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1187 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1188 else
1189 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1190 }
1191
1192 spin_lock_irq(&data->txlock);
1193 play_deferred(data);
1194 clear_bit(BTUSB_SUSPENDING, &data->flags);
1195 spin_unlock_irq(&data->txlock);
1196 schedule_work(&data->work);
1197
1198 return 0;
1199
1200 failed:
1201 usb_scuttle_anchored_urbs(&data->deferred);
1202 done:
1203 spin_lock_irq(&data->txlock);
1204 clear_bit(BTUSB_SUSPENDING, &data->flags);
1205 spin_unlock_irq(&data->txlock);
1206
1207 return err;
1208 }
1209 #endif
1210
1211 static struct usb_driver btusb_driver = {
1212 .name = "btusb",
1213 .probe = btusb_probe,
1214 .disconnect = btusb_disconnect,
1215 #ifdef CONFIG_PM
1216 .suspend = btusb_suspend,
1217 .resume = btusb_resume,
1218 #endif
1219 .id_table = btusb_table,
1220 .supports_autosuspend = 1,
1221 };
1222
1223 module_usb_driver(btusb_driver);
1224
1225 module_param(ignore_dga, bool, 0644);
1226 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1227
1228 module_param(ignore_csr, bool, 0644);
1229 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1230
1231 module_param(ignore_sniffer, bool, 0644);
1232 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1233
1234 module_param(disable_scofix, bool, 0644);
1235 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1236
1237 module_param(force_scofix, bool, 0644);
1238 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1239
1240 module_param(reset, bool, 0644);
1241 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1242
1243 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1244 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1245 MODULE_VERSION(VERSION);
1246 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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