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time: Fix timeekeping_get_ns overflow on 32bit systems
[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/module.h>
25 #include <linux/usb.h>
26
27 #include <net/bluetooth/bluetooth.h>
28 #include <net/bluetooth/hci_core.h>
29
30 #define VERSION "0.6"
31
32 static bool ignore_dga;
33 static bool ignore_csr;
34 static bool ignore_sniffer;
35 static bool disable_scofix;
36 static bool force_scofix;
37
38 static bool reset = 1;
39
40 static struct usb_driver btusb_driver;
41
42 #define BTUSB_IGNORE 0x01
43 #define BTUSB_DIGIANSWER 0x02
44 #define BTUSB_CSR 0x04
45 #define BTUSB_SNIFFER 0x08
46 #define BTUSB_BCM92035 0x10
47 #define BTUSB_BROKEN_ISOC 0x20
48 #define BTUSB_WRONG_SCO_MTU 0x40
49 #define BTUSB_ATH3012 0x80
50
51 static struct usb_device_id btusb_table[] = {
52 /* Generic Bluetooth USB device */
53 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
54
55 /* Broadcom SoftSailing reporting vendor specific */
56 { USB_DEVICE(0x0a5c, 0x21e1) },
57
58 /* Apple MacBookPro 7,1 */
59 { USB_DEVICE(0x05ac, 0x8213) },
60
61 /* Apple iMac11,1 */
62 { USB_DEVICE(0x05ac, 0x8215) },
63
64 /* Apple MacBookPro6,2 */
65 { USB_DEVICE(0x05ac, 0x8218) },
66
67 /* Apple MacBookAir3,1, MacBookAir3,2 */
68 { USB_DEVICE(0x05ac, 0x821b) },
69
70 /* Apple MacBookAir4,1 */
71 { USB_DEVICE(0x05ac, 0x821f) },
72
73 /* Apple MacBookPro8,2 */
74 { USB_DEVICE(0x05ac, 0x821a) },
75
76 /* Apple MacMini5,1 */
77 { USB_DEVICE(0x05ac, 0x8281) },
78
79 /* AVM BlueFRITZ! USB v2.0 */
80 { USB_DEVICE(0x057c, 0x3800) },
81
82 /* Bluetooth Ultraport Module from IBM */
83 { USB_DEVICE(0x04bf, 0x030a) },
84
85 /* ALPS Modules with non-standard id */
86 { USB_DEVICE(0x044e, 0x3001) },
87 { USB_DEVICE(0x044e, 0x3002) },
88
89 /* Ericsson with non-standard id */
90 { USB_DEVICE(0x0bdb, 0x1002) },
91
92 /* Canyon CN-BTU1 with HID interfaces */
93 { USB_DEVICE(0x0c10, 0x0000) },
94
95 /* Broadcom BCM20702A0 */
96 { USB_DEVICE(0x0489, 0xe042) },
97 { USB_DEVICE(0x0a5c, 0x21e3) },
98 { USB_DEVICE(0x0a5c, 0x21e6) },
99 { USB_DEVICE(0x0a5c, 0x21e8) },
100 { USB_DEVICE(0x0a5c, 0x21f3) },
101 { USB_DEVICE(0x0a5c, 0x21f4) },
102 { USB_DEVICE(0x413c, 0x8197) },
103
104 /* Foxconn - Hon Hai */
105 { USB_DEVICE(0x0489, 0xe033) },
106
107 { } /* Terminating entry */
108 };
109
110 MODULE_DEVICE_TABLE(usb, btusb_table);
111
112 static struct usb_device_id blacklist_table[] = {
113 /* CSR BlueCore devices */
114 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
115
116 /* Broadcom BCM2033 without firmware */
117 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
118
119 /* Atheros 3011 with sflash firmware */
120 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
121 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
122 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
123 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
124 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
125
126 /* Atheros AR9285 Malbec with sflash firmware */
127 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
128
129 /* Atheros 3012 with sflash firmware */
130 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
131 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
132 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
133 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
134 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
136 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
138
139 /* Atheros AR5BBU12 with sflash firmware */
140 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
141
142 /* Atheros AR5BBU12 with sflash firmware */
143 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
144
145 /* Broadcom BCM2035 */
146 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
147 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
148 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
149
150 /* Broadcom BCM2045 */
151 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
152 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
153
154 /* IBM/Lenovo ThinkPad with Broadcom chip */
155 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
156 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
157
158 /* HP laptop with Broadcom chip */
159 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
160
161 /* Dell laptop with Broadcom chip */
162 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
163
164 /* Dell Wireless 370 and 410 devices */
165 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
166 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
167
168 /* Belkin F8T012 and F8T013 devices */
169 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
170 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
171
172 /* Asus WL-BTD202 device */
173 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
174
175 /* Kensington Bluetooth USB adapter */
176 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
177
178 /* RTX Telecom based adapters with buggy SCO support */
179 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
180 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
181
182 /* CONWISE Technology based adapters with buggy SCO support */
183 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
184
185 /* Digianswer devices */
186 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
187 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
188
189 /* CSR BlueCore Bluetooth Sniffer */
190 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
191
192 /* Frontline ComProbe Bluetooth Sniffer */
193 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
194
195 { } /* Terminating entry */
196 };
197
198 #define BTUSB_MAX_ISOC_FRAMES 10
199
200 #define BTUSB_INTR_RUNNING 0
201 #define BTUSB_BULK_RUNNING 1
202 #define BTUSB_ISOC_RUNNING 2
203 #define BTUSB_SUSPENDING 3
204 #define BTUSB_DID_ISO_RESUME 4
205
206 struct btusb_data {
207 struct hci_dev *hdev;
208 struct usb_device *udev;
209 struct usb_interface *intf;
210 struct usb_interface *isoc;
211
212 spinlock_t lock;
213
214 unsigned long flags;
215
216 struct work_struct work;
217 struct work_struct waker;
218
219 struct usb_anchor tx_anchor;
220 struct usb_anchor intr_anchor;
221 struct usb_anchor bulk_anchor;
222 struct usb_anchor isoc_anchor;
223 struct usb_anchor deferred;
224 int tx_in_flight;
225 spinlock_t txlock;
226
227 struct usb_endpoint_descriptor *intr_ep;
228 struct usb_endpoint_descriptor *bulk_tx_ep;
229 struct usb_endpoint_descriptor *bulk_rx_ep;
230 struct usb_endpoint_descriptor *isoc_tx_ep;
231 struct usb_endpoint_descriptor *isoc_rx_ep;
232
233 __u8 cmdreq_type;
234
235 unsigned int sco_num;
236 int isoc_altsetting;
237 int suspend_count;
238 };
239
240 static int inc_tx(struct btusb_data *data)
241 {
242 unsigned long flags;
243 int rv;
244
245 spin_lock_irqsave(&data->txlock, flags);
246 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
247 if (!rv)
248 data->tx_in_flight++;
249 spin_unlock_irqrestore(&data->txlock, flags);
250
251 return rv;
252 }
253
254 static void btusb_intr_complete(struct urb *urb)
255 {
256 struct hci_dev *hdev = urb->context;
257 struct btusb_data *data = hci_get_drvdata(hdev);
258 int err;
259
260 BT_DBG("%s urb %p status %d count %d", hdev->name,
261 urb, urb->status, urb->actual_length);
262
263 if (!test_bit(HCI_RUNNING, &hdev->flags))
264 return;
265
266 if (urb->status == 0) {
267 hdev->stat.byte_rx += urb->actual_length;
268
269 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
270 urb->transfer_buffer,
271 urb->actual_length) < 0) {
272 BT_ERR("%s corrupted event packet", hdev->name);
273 hdev->stat.err_rx++;
274 }
275 }
276
277 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
278 return;
279
280 usb_mark_last_busy(data->udev);
281 usb_anchor_urb(urb, &data->intr_anchor);
282
283 err = usb_submit_urb(urb, GFP_ATOMIC);
284 if (err < 0) {
285 /* -EPERM: urb is being killed;
286 * -ENODEV: device got disconnected */
287 if (err != -EPERM && err != -ENODEV)
288 BT_ERR("%s urb %p failed to resubmit (%d)",
289 hdev->name, urb, -err);
290 usb_unanchor_urb(urb);
291 }
292 }
293
294 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
295 {
296 struct btusb_data *data = hci_get_drvdata(hdev);
297 struct urb *urb;
298 unsigned char *buf;
299 unsigned int pipe;
300 int err, size;
301
302 BT_DBG("%s", hdev->name);
303
304 if (!data->intr_ep)
305 return -ENODEV;
306
307 urb = usb_alloc_urb(0, mem_flags);
308 if (!urb)
309 return -ENOMEM;
310
311 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
312
313 buf = kmalloc(size, mem_flags);
314 if (!buf) {
315 usb_free_urb(urb);
316 return -ENOMEM;
317 }
318
319 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
320
321 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
322 btusb_intr_complete, hdev,
323 data->intr_ep->bInterval);
324
325 urb->transfer_flags |= URB_FREE_BUFFER;
326
327 usb_anchor_urb(urb, &data->intr_anchor);
328
329 err = usb_submit_urb(urb, mem_flags);
330 if (err < 0) {
331 if (err != -EPERM && err != -ENODEV)
332 BT_ERR("%s urb %p submission failed (%d)",
333 hdev->name, urb, -err);
334 usb_unanchor_urb(urb);
335 }
336
337 usb_free_urb(urb);
338
339 return err;
340 }
341
342 static void btusb_bulk_complete(struct urb *urb)
343 {
344 struct hci_dev *hdev = urb->context;
345 struct btusb_data *data = hci_get_drvdata(hdev);
346 int err;
347
348 BT_DBG("%s urb %p status %d count %d", hdev->name,
349 urb, urb->status, urb->actual_length);
350
351 if (!test_bit(HCI_RUNNING, &hdev->flags))
352 return;
353
354 if (urb->status == 0) {
355 hdev->stat.byte_rx += urb->actual_length;
356
357 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
358 urb->transfer_buffer,
359 urb->actual_length) < 0) {
360 BT_ERR("%s corrupted ACL packet", hdev->name);
361 hdev->stat.err_rx++;
362 }
363 }
364
365 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
366 return;
367
368 usb_anchor_urb(urb, &data->bulk_anchor);
369 usb_mark_last_busy(data->udev);
370
371 err = usb_submit_urb(urb, GFP_ATOMIC);
372 if (err < 0) {
373 /* -EPERM: urb is being killed;
374 * -ENODEV: device got disconnected */
375 if (err != -EPERM && err != -ENODEV)
376 BT_ERR("%s urb %p failed to resubmit (%d)",
377 hdev->name, urb, -err);
378 usb_unanchor_urb(urb);
379 }
380 }
381
382 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
383 {
384 struct btusb_data *data = hci_get_drvdata(hdev);
385 struct urb *urb;
386 unsigned char *buf;
387 unsigned int pipe;
388 int err, size = HCI_MAX_FRAME_SIZE;
389
390 BT_DBG("%s", hdev->name);
391
392 if (!data->bulk_rx_ep)
393 return -ENODEV;
394
395 urb = usb_alloc_urb(0, mem_flags);
396 if (!urb)
397 return -ENOMEM;
398
399 buf = kmalloc(size, mem_flags);
400 if (!buf) {
401 usb_free_urb(urb);
402 return -ENOMEM;
403 }
404
405 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
406
407 usb_fill_bulk_urb(urb, data->udev, pipe,
408 buf, size, btusb_bulk_complete, hdev);
409
410 urb->transfer_flags |= URB_FREE_BUFFER;
411
412 usb_mark_last_busy(data->udev);
413 usb_anchor_urb(urb, &data->bulk_anchor);
414
415 err = usb_submit_urb(urb, mem_flags);
416 if (err < 0) {
417 if (err != -EPERM && err != -ENODEV)
418 BT_ERR("%s urb %p submission failed (%d)",
419 hdev->name, urb, -err);
420 usb_unanchor_urb(urb);
421 }
422
423 usb_free_urb(urb);
424
425 return err;
426 }
427
428 static void btusb_isoc_complete(struct urb *urb)
429 {
430 struct hci_dev *hdev = urb->context;
431 struct btusb_data *data = hci_get_drvdata(hdev);
432 int i, err;
433
434 BT_DBG("%s urb %p status %d count %d", hdev->name,
435 urb, urb->status, urb->actual_length);
436
437 if (!test_bit(HCI_RUNNING, &hdev->flags))
438 return;
439
440 if (urb->status == 0) {
441 for (i = 0; i < urb->number_of_packets; i++) {
442 unsigned int offset = urb->iso_frame_desc[i].offset;
443 unsigned int length = urb->iso_frame_desc[i].actual_length;
444
445 if (urb->iso_frame_desc[i].status)
446 continue;
447
448 hdev->stat.byte_rx += length;
449
450 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
451 urb->transfer_buffer + offset,
452 length) < 0) {
453 BT_ERR("%s corrupted SCO packet", hdev->name);
454 hdev->stat.err_rx++;
455 }
456 }
457 }
458
459 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
460 return;
461
462 usb_anchor_urb(urb, &data->isoc_anchor);
463
464 err = usb_submit_urb(urb, GFP_ATOMIC);
465 if (err < 0) {
466 /* -EPERM: urb is being killed;
467 * -ENODEV: device got disconnected */
468 if (err != -EPERM && err != -ENODEV)
469 BT_ERR("%s urb %p failed to resubmit (%d)",
470 hdev->name, urb, -err);
471 usb_unanchor_urb(urb);
472 }
473 }
474
475 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
476 {
477 int i, offset = 0;
478
479 BT_DBG("len %d mtu %d", len, mtu);
480
481 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
482 i++, offset += mtu, len -= mtu) {
483 urb->iso_frame_desc[i].offset = offset;
484 urb->iso_frame_desc[i].length = mtu;
485 }
486
487 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
488 urb->iso_frame_desc[i].offset = offset;
489 urb->iso_frame_desc[i].length = len;
490 i++;
491 }
492
493 urb->number_of_packets = i;
494 }
495
496 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
497 {
498 struct btusb_data *data = hci_get_drvdata(hdev);
499 struct urb *urb;
500 unsigned char *buf;
501 unsigned int pipe;
502 int err, size;
503
504 BT_DBG("%s", hdev->name);
505
506 if (!data->isoc_rx_ep)
507 return -ENODEV;
508
509 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
510 if (!urb)
511 return -ENOMEM;
512
513 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
514 BTUSB_MAX_ISOC_FRAMES;
515
516 buf = kmalloc(size, mem_flags);
517 if (!buf) {
518 usb_free_urb(urb);
519 return -ENOMEM;
520 }
521
522 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
523
524 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
525 hdev, data->isoc_rx_ep->bInterval);
526
527 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
528
529 __fill_isoc_descriptor(urb, size,
530 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
531
532 usb_anchor_urb(urb, &data->isoc_anchor);
533
534 err = usb_submit_urb(urb, mem_flags);
535 if (err < 0) {
536 if (err != -EPERM && err != -ENODEV)
537 BT_ERR("%s urb %p submission failed (%d)",
538 hdev->name, urb, -err);
539 usb_unanchor_urb(urb);
540 }
541
542 usb_free_urb(urb);
543
544 return err;
545 }
546
547 static void btusb_tx_complete(struct urb *urb)
548 {
549 struct sk_buff *skb = urb->context;
550 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
551 struct btusb_data *data = hci_get_drvdata(hdev);
552
553 BT_DBG("%s urb %p status %d count %d", hdev->name,
554 urb, urb->status, urb->actual_length);
555
556 if (!test_bit(HCI_RUNNING, &hdev->flags))
557 goto done;
558
559 if (!urb->status)
560 hdev->stat.byte_tx += urb->transfer_buffer_length;
561 else
562 hdev->stat.err_tx++;
563
564 done:
565 spin_lock(&data->txlock);
566 data->tx_in_flight--;
567 spin_unlock(&data->txlock);
568
569 kfree(urb->setup_packet);
570
571 kfree_skb(skb);
572 }
573
574 static void btusb_isoc_tx_complete(struct urb *urb)
575 {
576 struct sk_buff *skb = urb->context;
577 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
578
579 BT_DBG("%s urb %p status %d count %d", hdev->name,
580 urb, urb->status, urb->actual_length);
581
582 if (!test_bit(HCI_RUNNING, &hdev->flags))
583 goto done;
584
585 if (!urb->status)
586 hdev->stat.byte_tx += urb->transfer_buffer_length;
587 else
588 hdev->stat.err_tx++;
589
590 done:
591 kfree(urb->setup_packet);
592
593 kfree_skb(skb);
594 }
595
596 static int btusb_open(struct hci_dev *hdev)
597 {
598 struct btusb_data *data = hci_get_drvdata(hdev);
599 int err;
600
601 BT_DBG("%s", hdev->name);
602
603 err = usb_autopm_get_interface(data->intf);
604 if (err < 0)
605 return err;
606
607 data->intf->needs_remote_wakeup = 1;
608
609 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
610 goto done;
611
612 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
613 goto done;
614
615 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
616 if (err < 0)
617 goto failed;
618
619 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
620 if (err < 0) {
621 usb_kill_anchored_urbs(&data->intr_anchor);
622 goto failed;
623 }
624
625 set_bit(BTUSB_BULK_RUNNING, &data->flags);
626 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
627
628 done:
629 usb_autopm_put_interface(data->intf);
630 return 0;
631
632 failed:
633 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
634 clear_bit(HCI_RUNNING, &hdev->flags);
635 usb_autopm_put_interface(data->intf);
636 return err;
637 }
638
639 static void btusb_stop_traffic(struct btusb_data *data)
640 {
641 usb_kill_anchored_urbs(&data->intr_anchor);
642 usb_kill_anchored_urbs(&data->bulk_anchor);
643 usb_kill_anchored_urbs(&data->isoc_anchor);
644 }
645
646 static int btusb_close(struct hci_dev *hdev)
647 {
648 struct btusb_data *data = hci_get_drvdata(hdev);
649 int err;
650
651 BT_DBG("%s", hdev->name);
652
653 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
654 return 0;
655
656 cancel_work_sync(&data->work);
657 cancel_work_sync(&data->waker);
658
659 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
660 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
661 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
662
663 btusb_stop_traffic(data);
664 err = usb_autopm_get_interface(data->intf);
665 if (err < 0)
666 goto failed;
667
668 data->intf->needs_remote_wakeup = 0;
669 usb_autopm_put_interface(data->intf);
670
671 failed:
672 usb_scuttle_anchored_urbs(&data->deferred);
673 return 0;
674 }
675
676 static int btusb_flush(struct hci_dev *hdev)
677 {
678 struct btusb_data *data = hci_get_drvdata(hdev);
679
680 BT_DBG("%s", hdev->name);
681
682 usb_kill_anchored_urbs(&data->tx_anchor);
683
684 return 0;
685 }
686
687 static int btusb_send_frame(struct sk_buff *skb)
688 {
689 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
690 struct btusb_data *data = hci_get_drvdata(hdev);
691 struct usb_ctrlrequest *dr;
692 struct urb *urb;
693 unsigned int pipe;
694 int err;
695
696 BT_DBG("%s", hdev->name);
697
698 if (!test_bit(HCI_RUNNING, &hdev->flags))
699 return -EBUSY;
700
701 switch (bt_cb(skb)->pkt_type) {
702 case HCI_COMMAND_PKT:
703 urb = usb_alloc_urb(0, GFP_ATOMIC);
704 if (!urb)
705 return -ENOMEM;
706
707 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
708 if (!dr) {
709 usb_free_urb(urb);
710 return -ENOMEM;
711 }
712
713 dr->bRequestType = data->cmdreq_type;
714 dr->bRequest = 0;
715 dr->wIndex = 0;
716 dr->wValue = 0;
717 dr->wLength = __cpu_to_le16(skb->len);
718
719 pipe = usb_sndctrlpipe(data->udev, 0x00);
720
721 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
722 skb->data, skb->len, btusb_tx_complete, skb);
723
724 hdev->stat.cmd_tx++;
725 break;
726
727 case HCI_ACLDATA_PKT:
728 if (!data->bulk_tx_ep)
729 return -ENODEV;
730
731 urb = usb_alloc_urb(0, GFP_ATOMIC);
732 if (!urb)
733 return -ENOMEM;
734
735 pipe = usb_sndbulkpipe(data->udev,
736 data->bulk_tx_ep->bEndpointAddress);
737
738 usb_fill_bulk_urb(urb, data->udev, pipe,
739 skb->data, skb->len, btusb_tx_complete, skb);
740
741 hdev->stat.acl_tx++;
742 break;
743
744 case HCI_SCODATA_PKT:
745 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
746 return -ENODEV;
747
748 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
749 if (!urb)
750 return -ENOMEM;
751
752 pipe = usb_sndisocpipe(data->udev,
753 data->isoc_tx_ep->bEndpointAddress);
754
755 usb_fill_int_urb(urb, data->udev, pipe,
756 skb->data, skb->len, btusb_isoc_tx_complete,
757 skb, data->isoc_tx_ep->bInterval);
758
759 urb->transfer_flags = URB_ISO_ASAP;
760
761 __fill_isoc_descriptor(urb, skb->len,
762 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
763
764 hdev->stat.sco_tx++;
765 goto skip_waking;
766
767 default:
768 return -EILSEQ;
769 }
770
771 err = inc_tx(data);
772 if (err) {
773 usb_anchor_urb(urb, &data->deferred);
774 schedule_work(&data->waker);
775 err = 0;
776 goto done;
777 }
778
779 skip_waking:
780 usb_anchor_urb(urb, &data->tx_anchor);
781
782 err = usb_submit_urb(urb, GFP_ATOMIC);
783 if (err < 0) {
784 if (err != -EPERM && err != -ENODEV)
785 BT_ERR("%s urb %p submission failed (%d)",
786 hdev->name, urb, -err);
787 kfree(urb->setup_packet);
788 usb_unanchor_urb(urb);
789 } else {
790 usb_mark_last_busy(data->udev);
791 }
792
793 done:
794 usb_free_urb(urb);
795 return err;
796 }
797
798 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
799 {
800 struct btusb_data *data = hci_get_drvdata(hdev);
801
802 BT_DBG("%s evt %d", hdev->name, evt);
803
804 if (hdev->conn_hash.sco_num != data->sco_num) {
805 data->sco_num = hdev->conn_hash.sco_num;
806 schedule_work(&data->work);
807 }
808 }
809
810 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
811 {
812 struct btusb_data *data = hci_get_drvdata(hdev);
813 struct usb_interface *intf = data->isoc;
814 struct usb_endpoint_descriptor *ep_desc;
815 int i, err;
816
817 if (!data->isoc)
818 return -ENODEV;
819
820 err = usb_set_interface(data->udev, 1, altsetting);
821 if (err < 0) {
822 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
823 return err;
824 }
825
826 data->isoc_altsetting = altsetting;
827
828 data->isoc_tx_ep = NULL;
829 data->isoc_rx_ep = NULL;
830
831 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
832 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
833
834 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
835 data->isoc_tx_ep = ep_desc;
836 continue;
837 }
838
839 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
840 data->isoc_rx_ep = ep_desc;
841 continue;
842 }
843 }
844
845 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
846 BT_ERR("%s invalid SCO descriptors", hdev->name);
847 return -ENODEV;
848 }
849
850 return 0;
851 }
852
853 static void btusb_work(struct work_struct *work)
854 {
855 struct btusb_data *data = container_of(work, struct btusb_data, work);
856 struct hci_dev *hdev = data->hdev;
857 int new_alts;
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
872 if (hdev->voice_setting & 0x0020) {
873 static const int alts[3] = { 2, 4, 5 };
874 new_alts = alts[hdev->conn_hash.sco_num - 1];
875 } else {
876 new_alts = hdev->conn_hash.sco_num;
877 }
878
879 if (data->isoc_altsetting != new_alts) {
880 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
881 usb_kill_anchored_urbs(&data->isoc_anchor);
882
883 if (__set_isoc_interface(hdev, new_alts) < 0)
884 return;
885 }
886
887 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
888 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
889 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
890 else
891 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
892 }
893 } else {
894 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
895 usb_kill_anchored_urbs(&data->isoc_anchor);
896
897 __set_isoc_interface(hdev, 0);
898 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
899 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
900 }
901 }
902
903 static void btusb_waker(struct work_struct *work)
904 {
905 struct btusb_data *data = container_of(work, struct btusb_data, waker);
906 int err;
907
908 err = usb_autopm_get_interface(data->intf);
909 if (err < 0)
910 return;
911
912 usb_autopm_put_interface(data->intf);
913 }
914
915 static int btusb_probe(struct usb_interface *intf,
916 const struct usb_device_id *id)
917 {
918 struct usb_endpoint_descriptor *ep_desc;
919 struct btusb_data *data;
920 struct hci_dev *hdev;
921 int i, err;
922
923 BT_DBG("intf %p id %p", intf, id);
924
925 /* interface numbers are hardcoded in the spec */
926 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
927 return -ENODEV;
928
929 if (!id->driver_info) {
930 const struct usb_device_id *match;
931 match = usb_match_id(intf, blacklist_table);
932 if (match)
933 id = match;
934 }
935
936 if (id->driver_info == BTUSB_IGNORE)
937 return -ENODEV;
938
939 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
940 return -ENODEV;
941
942 if (ignore_csr && id->driver_info & BTUSB_CSR)
943 return -ENODEV;
944
945 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
946 return -ENODEV;
947
948 if (id->driver_info & BTUSB_ATH3012) {
949 struct usb_device *udev = interface_to_usbdev(intf);
950
951 /* Old firmware would otherwise let ath3k driver load
952 * patch and sysconfig files */
953 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
954 return -ENODEV;
955 }
956
957 data = kzalloc(sizeof(*data), GFP_KERNEL);
958 if (!data)
959 return -ENOMEM;
960
961 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
962 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
963
964 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
965 data->intr_ep = ep_desc;
966 continue;
967 }
968
969 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
970 data->bulk_tx_ep = ep_desc;
971 continue;
972 }
973
974 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
975 data->bulk_rx_ep = ep_desc;
976 continue;
977 }
978 }
979
980 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
981 kfree(data);
982 return -ENODEV;
983 }
984
985 data->cmdreq_type = USB_TYPE_CLASS;
986
987 data->udev = interface_to_usbdev(intf);
988 data->intf = intf;
989
990 spin_lock_init(&data->lock);
991
992 INIT_WORK(&data->work, btusb_work);
993 INIT_WORK(&data->waker, btusb_waker);
994 spin_lock_init(&data->txlock);
995
996 init_usb_anchor(&data->tx_anchor);
997 init_usb_anchor(&data->intr_anchor);
998 init_usb_anchor(&data->bulk_anchor);
999 init_usb_anchor(&data->isoc_anchor);
1000 init_usb_anchor(&data->deferred);
1001
1002 hdev = hci_alloc_dev();
1003 if (!hdev) {
1004 kfree(data);
1005 return -ENOMEM;
1006 }
1007
1008 hdev->bus = HCI_USB;
1009 hci_set_drvdata(hdev, data);
1010
1011 data->hdev = hdev;
1012
1013 SET_HCIDEV_DEV(hdev, &intf->dev);
1014
1015 hdev->open = btusb_open;
1016 hdev->close = btusb_close;
1017 hdev->flush = btusb_flush;
1018 hdev->send = btusb_send_frame;
1019 hdev->notify = btusb_notify;
1020
1021 /* Interface numbers are hardcoded in the specification */
1022 data->isoc = usb_ifnum_to_if(data->udev, 1);
1023
1024 if (!reset)
1025 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1026
1027 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1028 if (!disable_scofix)
1029 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1030 }
1031
1032 if (id->driver_info & BTUSB_BROKEN_ISOC)
1033 data->isoc = NULL;
1034
1035 if (id->driver_info & BTUSB_DIGIANSWER) {
1036 data->cmdreq_type = USB_TYPE_VENDOR;
1037 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1038 }
1039
1040 if (id->driver_info & BTUSB_CSR) {
1041 struct usb_device *udev = data->udev;
1042
1043 /* Old firmware would otherwise execute USB reset */
1044 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1045 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1046 }
1047
1048 if (id->driver_info & BTUSB_SNIFFER) {
1049 struct usb_device *udev = data->udev;
1050
1051 /* New sniffer firmware has crippled HCI interface */
1052 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1053 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1054
1055 data->isoc = NULL;
1056 }
1057
1058 if (id->driver_info & BTUSB_BCM92035) {
1059 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1060 struct sk_buff *skb;
1061
1062 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1063 if (skb) {
1064 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1065 skb_queue_tail(&hdev->driver_init, skb);
1066 }
1067 }
1068
1069 if (data->isoc) {
1070 err = usb_driver_claim_interface(&btusb_driver,
1071 data->isoc, data);
1072 if (err < 0) {
1073 hci_free_dev(hdev);
1074 kfree(data);
1075 return err;
1076 }
1077 }
1078
1079 err = hci_register_dev(hdev);
1080 if (err < 0) {
1081 hci_free_dev(hdev);
1082 kfree(data);
1083 return err;
1084 }
1085
1086 usb_set_intfdata(intf, data);
1087
1088 return 0;
1089 }
1090
1091 static void btusb_disconnect(struct usb_interface *intf)
1092 {
1093 struct btusb_data *data = usb_get_intfdata(intf);
1094 struct hci_dev *hdev;
1095
1096 BT_DBG("intf %p", intf);
1097
1098 if (!data)
1099 return;
1100
1101 hdev = data->hdev;
1102 usb_set_intfdata(data->intf, NULL);
1103
1104 if (data->isoc)
1105 usb_set_intfdata(data->isoc, NULL);
1106
1107 hci_unregister_dev(hdev);
1108
1109 if (intf == data->isoc)
1110 usb_driver_release_interface(&btusb_driver, data->intf);
1111 else if (data->isoc)
1112 usb_driver_release_interface(&btusb_driver, data->isoc);
1113
1114 hci_free_dev(hdev);
1115 kfree(data);
1116 }
1117
1118 #ifdef CONFIG_PM
1119 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1120 {
1121 struct btusb_data *data = usb_get_intfdata(intf);
1122
1123 BT_DBG("intf %p", intf);
1124
1125 if (data->suspend_count++)
1126 return 0;
1127
1128 spin_lock_irq(&data->txlock);
1129 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1130 set_bit(BTUSB_SUSPENDING, &data->flags);
1131 spin_unlock_irq(&data->txlock);
1132 } else {
1133 spin_unlock_irq(&data->txlock);
1134 data->suspend_count--;
1135 return -EBUSY;
1136 }
1137
1138 cancel_work_sync(&data->work);
1139
1140 btusb_stop_traffic(data);
1141 usb_kill_anchored_urbs(&data->tx_anchor);
1142
1143 return 0;
1144 }
1145
1146 static void play_deferred(struct btusb_data *data)
1147 {
1148 struct urb *urb;
1149 int err;
1150
1151 while ((urb = usb_get_from_anchor(&data->deferred))) {
1152 err = usb_submit_urb(urb, GFP_ATOMIC);
1153 if (err < 0)
1154 break;
1155
1156 data->tx_in_flight++;
1157 }
1158 usb_scuttle_anchored_urbs(&data->deferred);
1159 }
1160
1161 static int btusb_resume(struct usb_interface *intf)
1162 {
1163 struct btusb_data *data = usb_get_intfdata(intf);
1164 struct hci_dev *hdev = data->hdev;
1165 int err = 0;
1166
1167 BT_DBG("intf %p", intf);
1168
1169 if (--data->suspend_count)
1170 return 0;
1171
1172 if (!test_bit(HCI_RUNNING, &hdev->flags))
1173 goto done;
1174
1175 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1176 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1177 if (err < 0) {
1178 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1179 goto failed;
1180 }
1181 }
1182
1183 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1184 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1185 if (err < 0) {
1186 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1187 goto failed;
1188 }
1189
1190 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1191 }
1192
1193 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1194 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1195 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1196 else
1197 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1198 }
1199
1200 spin_lock_irq(&data->txlock);
1201 play_deferred(data);
1202 clear_bit(BTUSB_SUSPENDING, &data->flags);
1203 spin_unlock_irq(&data->txlock);
1204 schedule_work(&data->work);
1205
1206 return 0;
1207
1208 failed:
1209 usb_scuttle_anchored_urbs(&data->deferred);
1210 done:
1211 spin_lock_irq(&data->txlock);
1212 clear_bit(BTUSB_SUSPENDING, &data->flags);
1213 spin_unlock_irq(&data->txlock);
1214
1215 return err;
1216 }
1217 #endif
1218
1219 static struct usb_driver btusb_driver = {
1220 .name = "btusb",
1221 .probe = btusb_probe,
1222 .disconnect = btusb_disconnect,
1223 #ifdef CONFIG_PM
1224 .suspend = btusb_suspend,
1225 .resume = btusb_resume,
1226 #endif
1227 .id_table = btusb_table,
1228 .supports_autosuspend = 1,
1229 .disable_hub_initiated_lpm = 1,
1230 };
1231
1232 module_usb_driver(btusb_driver);
1233
1234 module_param(ignore_dga, bool, 0644);
1235 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1236
1237 module_param(ignore_csr, bool, 0644);
1238 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1239
1240 module_param(ignore_sniffer, bool, 0644);
1241 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1242
1243 module_param(disable_scofix, bool, 0644);
1244 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1245
1246 module_param(force_scofix, bool, 0644);
1247 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1248
1249 module_param(reset, bool, 0644);
1250 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1251
1252 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1253 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1254 MODULE_VERSION(VERSION);
1255 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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