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Merge tag 'staging-3.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blob7e351e345476c1bcc2141f95e41fe43a3e65e612
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 /* Apple-specific (Broadcom) devices */
56 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
57
58 /* Broadcom SoftSailing reporting vendor specific */
59 { USB_DEVICE(0x0a5c, 0x21e1) },
60
61 /* Apple MacBookPro 7,1 */
62 { USB_DEVICE(0x05ac, 0x8213) },
63
64 /* Apple iMac11,1 */
65 { USB_DEVICE(0x05ac, 0x8215) },
66
67 /* Apple MacBookPro6,2 */
68 { USB_DEVICE(0x05ac, 0x8218) },
69
70 /* Apple MacBookAir3,1, MacBookAir3,2 */
71 { USB_DEVICE(0x05ac, 0x821b) },
72
73 /* Apple MacBookAir4,1 */
74 { USB_DEVICE(0x05ac, 0x821f) },
75
76 /* Apple MacBookPro8,2 */
77 { USB_DEVICE(0x05ac, 0x821a) },
78
79 /* Apple MacMini5,1 */
80 { USB_DEVICE(0x05ac, 0x8281) },
81
82 /* AVM BlueFRITZ! USB v2.0 */
83 { USB_DEVICE(0x057c, 0x3800) },
84
85 /* Bluetooth Ultraport Module from IBM */
86 { USB_DEVICE(0x04bf, 0x030a) },
87
88 /* ALPS Modules with non-standard id */
89 { USB_DEVICE(0x044e, 0x3001) },
90 { USB_DEVICE(0x044e, 0x3002) },
91
92 /* Ericsson with non-standard id */
93 { USB_DEVICE(0x0bdb, 0x1002) },
94
95 /* Canyon CN-BTU1 with HID interfaces */
96 { USB_DEVICE(0x0c10, 0x0000) },
97
98 /* Broadcom BCM20702A0 */
99 { USB_DEVICE(0x0b05, 0x17b5) },
100 { USB_DEVICE(0x04ca, 0x2003) },
101 { USB_DEVICE(0x0489, 0xe042) },
102 { USB_DEVICE(0x413c, 0x8197) },
103
104 /* Foxconn - Hon Hai */
105 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
106
107 /*Broadcom devices with vendor specific id */
108 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
109
110 { } /* Terminating entry */
111 };
112
113 MODULE_DEVICE_TABLE(usb, btusb_table);
114
115 static struct usb_device_id blacklist_table[] = {
116 /* CSR BlueCore devices */
117 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
118
119 /* Broadcom BCM2033 without firmware */
120 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
121
122 /* Atheros 3011 with sflash firmware */
123 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
124 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
125 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
126 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
127 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
128 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
129
130 /* Atheros AR9285 Malbec with sflash firmware */
131 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
132
133 /* Atheros 3012 with sflash firmware */
134 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
136 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
142 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
143 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
144 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
145 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
146 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
147
148 /* Atheros AR5BBU12 with sflash firmware */
149 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
150
151 /* Atheros AR5BBU12 with sflash firmware */
152 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
153 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
154
155 /* Broadcom BCM2035 */
156 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
157 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
158 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
159
160 /* Broadcom BCM2045 */
161 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
163
164 /* IBM/Lenovo ThinkPad with Broadcom chip */
165 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
166 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
167
168 /* HP laptop with Broadcom chip */
169 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
170
171 /* Dell laptop with Broadcom chip */
172 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
173
174 /* Dell Wireless 370 and 410 devices */
175 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
176 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
177
178 /* Belkin F8T012 and F8T013 devices */
179 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
180 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
181
182 /* Asus WL-BTD202 device */
183 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
184
185 /* Kensington Bluetooth USB adapter */
186 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
187
188 /* RTX Telecom based adapters with buggy SCO support */
189 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
190 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
191
192 /* CONWISE Technology based adapters with buggy SCO support */
193 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
194
195 /* Digianswer devices */
196 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
197 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
198
199 /* CSR BlueCore Bluetooth Sniffer */
200 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
201
202 /* Frontline ComProbe Bluetooth Sniffer */
203 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
204
205 { } /* Terminating entry */
206 };
207
208 #define BTUSB_MAX_ISOC_FRAMES 10
209
210 #define BTUSB_INTR_RUNNING 0
211 #define BTUSB_BULK_RUNNING 1
212 #define BTUSB_ISOC_RUNNING 2
213 #define BTUSB_SUSPENDING 3
214 #define BTUSB_DID_ISO_RESUME 4
215
216 struct btusb_data {
217 struct hci_dev *hdev;
218 struct usb_device *udev;
219 struct usb_interface *intf;
220 struct usb_interface *isoc;
221
222 spinlock_t lock;
223
224 unsigned long flags;
225
226 struct work_struct work;
227 struct work_struct waker;
228
229 struct usb_anchor tx_anchor;
230 struct usb_anchor intr_anchor;
231 struct usb_anchor bulk_anchor;
232 struct usb_anchor isoc_anchor;
233 struct usb_anchor deferred;
234 int tx_in_flight;
235 spinlock_t txlock;
236
237 struct usb_endpoint_descriptor *intr_ep;
238 struct usb_endpoint_descriptor *bulk_tx_ep;
239 struct usb_endpoint_descriptor *bulk_rx_ep;
240 struct usb_endpoint_descriptor *isoc_tx_ep;
241 struct usb_endpoint_descriptor *isoc_rx_ep;
242
243 __u8 cmdreq_type;
244
245 unsigned int sco_num;
246 int isoc_altsetting;
247 int suspend_count;
248 };
249
250 static int inc_tx(struct btusb_data *data)
251 {
252 unsigned long flags;
253 int rv;
254
255 spin_lock_irqsave(&data->txlock, flags);
256 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
257 if (!rv)
258 data->tx_in_flight++;
259 spin_unlock_irqrestore(&data->txlock, flags);
260
261 return rv;
262 }
263
264 static void btusb_intr_complete(struct urb *urb)
265 {
266 struct hci_dev *hdev = urb->context;
267 struct btusb_data *data = hci_get_drvdata(hdev);
268 int err;
269
270 BT_DBG("%s urb %p status %d count %d", hdev->name,
271 urb, urb->status, urb->actual_length);
272
273 if (!test_bit(HCI_RUNNING, &hdev->flags))
274 return;
275
276 if (urb->status == 0) {
277 hdev->stat.byte_rx += urb->actual_length;
278
279 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
280 urb->transfer_buffer,
281 urb->actual_length) < 0) {
282 BT_ERR("%s corrupted event packet", hdev->name);
283 hdev->stat.err_rx++;
284 }
285 }
286
287 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
288 return;
289
290 usb_mark_last_busy(data->udev);
291 usb_anchor_urb(urb, &data->intr_anchor);
292
293 err = usb_submit_urb(urb, GFP_ATOMIC);
294 if (err < 0) {
295 /* -EPERM: urb is being killed;
296 * -ENODEV: device got disconnected */
297 if (err != -EPERM && err != -ENODEV)
298 BT_ERR("%s urb %p failed to resubmit (%d)",
299 hdev->name, urb, -err);
300 usb_unanchor_urb(urb);
301 }
302 }
303
304 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
305 {
306 struct btusb_data *data = hci_get_drvdata(hdev);
307 struct urb *urb;
308 unsigned char *buf;
309 unsigned int pipe;
310 int err, size;
311
312 BT_DBG("%s", hdev->name);
313
314 if (!data->intr_ep)
315 return -ENODEV;
316
317 urb = usb_alloc_urb(0, mem_flags);
318 if (!urb)
319 return -ENOMEM;
320
321 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
322
323 buf = kmalloc(size, mem_flags);
324 if (!buf) {
325 usb_free_urb(urb);
326 return -ENOMEM;
327 }
328
329 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
330
331 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
332 btusb_intr_complete, hdev,
333 data->intr_ep->bInterval);
334
335 urb->transfer_flags |= URB_FREE_BUFFER;
336
337 usb_anchor_urb(urb, &data->intr_anchor);
338
339 err = usb_submit_urb(urb, mem_flags);
340 if (err < 0) {
341 if (err != -EPERM && err != -ENODEV)
342 BT_ERR("%s urb %p submission failed (%d)",
343 hdev->name, urb, -err);
344 usb_unanchor_urb(urb);
345 }
346
347 usb_free_urb(urb);
348
349 return err;
350 }
351
352 static void btusb_bulk_complete(struct urb *urb)
353 {
354 struct hci_dev *hdev = urb->context;
355 struct btusb_data *data = hci_get_drvdata(hdev);
356 int err;
357
358 BT_DBG("%s urb %p status %d count %d", hdev->name,
359 urb, urb->status, urb->actual_length);
360
361 if (!test_bit(HCI_RUNNING, &hdev->flags))
362 return;
363
364 if (urb->status == 0) {
365 hdev->stat.byte_rx += urb->actual_length;
366
367 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
368 urb->transfer_buffer,
369 urb->actual_length) < 0) {
370 BT_ERR("%s corrupted ACL packet", hdev->name);
371 hdev->stat.err_rx++;
372 }
373 }
374
375 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
376 return;
377
378 usb_anchor_urb(urb, &data->bulk_anchor);
379 usb_mark_last_busy(data->udev);
380
381 err = usb_submit_urb(urb, GFP_ATOMIC);
382 if (err < 0) {
383 /* -EPERM: urb is being killed;
384 * -ENODEV: device got disconnected */
385 if (err != -EPERM && err != -ENODEV)
386 BT_ERR("%s urb %p failed to resubmit (%d)",
387 hdev->name, urb, -err);
388 usb_unanchor_urb(urb);
389 }
390 }
391
392 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
393 {
394 struct btusb_data *data = hci_get_drvdata(hdev);
395 struct urb *urb;
396 unsigned char *buf;
397 unsigned int pipe;
398 int err, size = HCI_MAX_FRAME_SIZE;
399
400 BT_DBG("%s", hdev->name);
401
402 if (!data->bulk_rx_ep)
403 return -ENODEV;
404
405 urb = usb_alloc_urb(0, mem_flags);
406 if (!urb)
407 return -ENOMEM;
408
409 buf = kmalloc(size, mem_flags);
410 if (!buf) {
411 usb_free_urb(urb);
412 return -ENOMEM;
413 }
414
415 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
416
417 usb_fill_bulk_urb(urb, data->udev, pipe,
418 buf, size, btusb_bulk_complete, hdev);
419
420 urb->transfer_flags |= URB_FREE_BUFFER;
421
422 usb_mark_last_busy(data->udev);
423 usb_anchor_urb(urb, &data->bulk_anchor);
424
425 err = usb_submit_urb(urb, mem_flags);
426 if (err < 0) {
427 if (err != -EPERM && err != -ENODEV)
428 BT_ERR("%s urb %p submission failed (%d)",
429 hdev->name, urb, -err);
430 usb_unanchor_urb(urb);
431 }
432
433 usb_free_urb(urb);
434
435 return err;
436 }
437
438 static void btusb_isoc_complete(struct urb *urb)
439 {
440 struct hci_dev *hdev = urb->context;
441 struct btusb_data *data = hci_get_drvdata(hdev);
442 int i, err;
443
444 BT_DBG("%s urb %p status %d count %d", hdev->name,
445 urb, urb->status, urb->actual_length);
446
447 if (!test_bit(HCI_RUNNING, &hdev->flags))
448 return;
449
450 if (urb->status == 0) {
451 for (i = 0; i < urb->number_of_packets; i++) {
452 unsigned int offset = urb->iso_frame_desc[i].offset;
453 unsigned int length = urb->iso_frame_desc[i].actual_length;
454
455 if (urb->iso_frame_desc[i].status)
456 continue;
457
458 hdev->stat.byte_rx += length;
459
460 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
461 urb->transfer_buffer + offset,
462 length) < 0) {
463 BT_ERR("%s corrupted SCO packet", hdev->name);
464 hdev->stat.err_rx++;
465 }
466 }
467 }
468
469 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
470 return;
471
472 usb_anchor_urb(urb, &data->isoc_anchor);
473
474 err = usb_submit_urb(urb, GFP_ATOMIC);
475 if (err < 0) {
476 /* -EPERM: urb is being killed;
477 * -ENODEV: device got disconnected */
478 if (err != -EPERM && err != -ENODEV)
479 BT_ERR("%s urb %p failed to resubmit (%d)",
480 hdev->name, urb, -err);
481 usb_unanchor_urb(urb);
482 }
483 }
484
485 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
486 {
487 int i, offset = 0;
488
489 BT_DBG("len %d mtu %d", len, mtu);
490
491 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
492 i++, offset += mtu, len -= mtu) {
493 urb->iso_frame_desc[i].offset = offset;
494 urb->iso_frame_desc[i].length = mtu;
495 }
496
497 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
498 urb->iso_frame_desc[i].offset = offset;
499 urb->iso_frame_desc[i].length = len;
500 i++;
501 }
502
503 urb->number_of_packets = i;
504 }
505
506 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
507 {
508 struct btusb_data *data = hci_get_drvdata(hdev);
509 struct urb *urb;
510 unsigned char *buf;
511 unsigned int pipe;
512 int err, size;
513
514 BT_DBG("%s", hdev->name);
515
516 if (!data->isoc_rx_ep)
517 return -ENODEV;
518
519 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
520 if (!urb)
521 return -ENOMEM;
522
523 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
524 BTUSB_MAX_ISOC_FRAMES;
525
526 buf = kmalloc(size, mem_flags);
527 if (!buf) {
528 usb_free_urb(urb);
529 return -ENOMEM;
530 }
531
532 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
533
534 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
535 hdev, data->isoc_rx_ep->bInterval);
536
537 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
538
539 __fill_isoc_descriptor(urb, size,
540 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
541
542 usb_anchor_urb(urb, &data->isoc_anchor);
543
544 err = usb_submit_urb(urb, mem_flags);
545 if (err < 0) {
546 if (err != -EPERM && err != -ENODEV)
547 BT_ERR("%s urb %p submission failed (%d)",
548 hdev->name, urb, -err);
549 usb_unanchor_urb(urb);
550 }
551
552 usb_free_urb(urb);
553
554 return err;
555 }
556
557 static void btusb_tx_complete(struct urb *urb)
558 {
559 struct sk_buff *skb = urb->context;
560 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
561 struct btusb_data *data = hci_get_drvdata(hdev);
562
563 BT_DBG("%s urb %p status %d count %d", hdev->name,
564 urb, urb->status, urb->actual_length);
565
566 if (!test_bit(HCI_RUNNING, &hdev->flags))
567 goto done;
568
569 if (!urb->status)
570 hdev->stat.byte_tx += urb->transfer_buffer_length;
571 else
572 hdev->stat.err_tx++;
573
574 done:
575 spin_lock(&data->txlock);
576 data->tx_in_flight--;
577 spin_unlock(&data->txlock);
578
579 kfree(urb->setup_packet);
580
581 kfree_skb(skb);
582 }
583
584 static void btusb_isoc_tx_complete(struct urb *urb)
585 {
586 struct sk_buff *skb = urb->context;
587 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
588
589 BT_DBG("%s urb %p status %d count %d", hdev->name,
590 urb, urb->status, urb->actual_length);
591
592 if (!test_bit(HCI_RUNNING, &hdev->flags))
593 goto done;
594
595 if (!urb->status)
596 hdev->stat.byte_tx += urb->transfer_buffer_length;
597 else
598 hdev->stat.err_tx++;
599
600 done:
601 kfree(urb->setup_packet);
602
603 kfree_skb(skb);
604 }
605
606 static int btusb_open(struct hci_dev *hdev)
607 {
608 struct btusb_data *data = hci_get_drvdata(hdev);
609 int err;
610
611 BT_DBG("%s", hdev->name);
612
613 err = usb_autopm_get_interface(data->intf);
614 if (err < 0)
615 return err;
616
617 data->intf->needs_remote_wakeup = 1;
618
619 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
620 goto done;
621
622 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
623 goto done;
624
625 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
626 if (err < 0)
627 goto failed;
628
629 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
630 if (err < 0) {
631 usb_kill_anchored_urbs(&data->intr_anchor);
632 goto failed;
633 }
634
635 set_bit(BTUSB_BULK_RUNNING, &data->flags);
636 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
637
638 done:
639 usb_autopm_put_interface(data->intf);
640 return 0;
641
642 failed:
643 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
644 clear_bit(HCI_RUNNING, &hdev->flags);
645 usb_autopm_put_interface(data->intf);
646 return err;
647 }
648
649 static void btusb_stop_traffic(struct btusb_data *data)
650 {
651 usb_kill_anchored_urbs(&data->intr_anchor);
652 usb_kill_anchored_urbs(&data->bulk_anchor);
653 usb_kill_anchored_urbs(&data->isoc_anchor);
654 }
655
656 static int btusb_close(struct hci_dev *hdev)
657 {
658 struct btusb_data *data = hci_get_drvdata(hdev);
659 int err;
660
661 BT_DBG("%s", hdev->name);
662
663 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
664 return 0;
665
666 cancel_work_sync(&data->work);
667 cancel_work_sync(&data->waker);
668
669 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
670 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
671 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
672
673 btusb_stop_traffic(data);
674 err = usb_autopm_get_interface(data->intf);
675 if (err < 0)
676 goto failed;
677
678 data->intf->needs_remote_wakeup = 0;
679 usb_autopm_put_interface(data->intf);
680
681 failed:
682 usb_scuttle_anchored_urbs(&data->deferred);
683 return 0;
684 }
685
686 static int btusb_flush(struct hci_dev *hdev)
687 {
688 struct btusb_data *data = hci_get_drvdata(hdev);
689
690 BT_DBG("%s", hdev->name);
691
692 usb_kill_anchored_urbs(&data->tx_anchor);
693
694 return 0;
695 }
696
697 static int btusb_send_frame(struct sk_buff *skb)
698 {
699 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
700 struct btusb_data *data = hci_get_drvdata(hdev);
701 struct usb_ctrlrequest *dr;
702 struct urb *urb;
703 unsigned int pipe;
704 int err;
705
706 BT_DBG("%s", hdev->name);
707
708 if (!test_bit(HCI_RUNNING, &hdev->flags))
709 return -EBUSY;
710
711 switch (bt_cb(skb)->pkt_type) {
712 case HCI_COMMAND_PKT:
713 urb = usb_alloc_urb(0, GFP_ATOMIC);
714 if (!urb)
715 return -ENOMEM;
716
717 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
718 if (!dr) {
719 usb_free_urb(urb);
720 return -ENOMEM;
721 }
722
723 dr->bRequestType = data->cmdreq_type;
724 dr->bRequest = 0;
725 dr->wIndex = 0;
726 dr->wValue = 0;
727 dr->wLength = __cpu_to_le16(skb->len);
728
729 pipe = usb_sndctrlpipe(data->udev, 0x00);
730
731 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
732 skb->data, skb->len, btusb_tx_complete, skb);
733
734 hdev->stat.cmd_tx++;
735 break;
736
737 case HCI_ACLDATA_PKT:
738 if (!data->bulk_tx_ep)
739 return -ENODEV;
740
741 urb = usb_alloc_urb(0, GFP_ATOMIC);
742 if (!urb)
743 return -ENOMEM;
744
745 pipe = usb_sndbulkpipe(data->udev,
746 data->bulk_tx_ep->bEndpointAddress);
747
748 usb_fill_bulk_urb(urb, data->udev, pipe,
749 skb->data, skb->len, btusb_tx_complete, skb);
750
751 hdev->stat.acl_tx++;
752 break;
753
754 case HCI_SCODATA_PKT:
755 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
756 return -ENODEV;
757
758 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
759 if (!urb)
760 return -ENOMEM;
761
762 pipe = usb_sndisocpipe(data->udev,
763 data->isoc_tx_ep->bEndpointAddress);
764
765 usb_fill_int_urb(urb, data->udev, pipe,
766 skb->data, skb->len, btusb_isoc_tx_complete,
767 skb, data->isoc_tx_ep->bInterval);
768
769 urb->transfer_flags = URB_ISO_ASAP;
770
771 __fill_isoc_descriptor(urb, skb->len,
772 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
773
774 hdev->stat.sco_tx++;
775 goto skip_waking;
776
777 default:
778 return -EILSEQ;
779 }
780
781 err = inc_tx(data);
782 if (err) {
783 usb_anchor_urb(urb, &data->deferred);
784 schedule_work(&data->waker);
785 err = 0;
786 goto done;
787 }
788
789 skip_waking:
790 usb_anchor_urb(urb, &data->tx_anchor);
791
792 err = usb_submit_urb(urb, GFP_ATOMIC);
793 if (err < 0) {
794 if (err != -EPERM && err != -ENODEV)
795 BT_ERR("%s urb %p submission failed (%d)",
796 hdev->name, urb, -err);
797 kfree(urb->setup_packet);
798 usb_unanchor_urb(urb);
799 } else {
800 usb_mark_last_busy(data->udev);
801 }
802
803 done:
804 usb_free_urb(urb);
805 return err;
806 }
807
808 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
809 {
810 struct btusb_data *data = hci_get_drvdata(hdev);
811
812 BT_DBG("%s evt %d", hdev->name, evt);
813
814 if (hdev->conn_hash.sco_num != data->sco_num) {
815 data->sco_num = hdev->conn_hash.sco_num;
816 schedule_work(&data->work);
817 }
818 }
819
820 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
821 {
822 struct btusb_data *data = hci_get_drvdata(hdev);
823 struct usb_interface *intf = data->isoc;
824 struct usb_endpoint_descriptor *ep_desc;
825 int i, err;
826
827 if (!data->isoc)
828 return -ENODEV;
829
830 err = usb_set_interface(data->udev, 1, altsetting);
831 if (err < 0) {
832 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
833 return err;
834 }
835
836 data->isoc_altsetting = altsetting;
837
838 data->isoc_tx_ep = NULL;
839 data->isoc_rx_ep = NULL;
840
841 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
842 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
843
844 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
845 data->isoc_tx_ep = ep_desc;
846 continue;
847 }
848
849 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
850 data->isoc_rx_ep = ep_desc;
851 continue;
852 }
853 }
854
855 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
856 BT_ERR("%s invalid SCO descriptors", hdev->name);
857 return -ENODEV;
858 }
859
860 return 0;
861 }
862
863 static void btusb_work(struct work_struct *work)
864 {
865 struct btusb_data *data = container_of(work, struct btusb_data, work);
866 struct hci_dev *hdev = data->hdev;
867 int new_alts;
868 int err;
869
870 if (hdev->conn_hash.sco_num > 0) {
871 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
872 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
873 if (err < 0) {
874 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
875 usb_kill_anchored_urbs(&data->isoc_anchor);
876 return;
877 }
878
879 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
880 }
881
882 if (hdev->voice_setting & 0x0020) {
883 static const int alts[3] = { 2, 4, 5 };
884 new_alts = alts[hdev->conn_hash.sco_num - 1];
885 } else {
886 new_alts = hdev->conn_hash.sco_num;
887 }
888
889 if (data->isoc_altsetting != new_alts) {
890 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
891 usb_kill_anchored_urbs(&data->isoc_anchor);
892
893 if (__set_isoc_interface(hdev, new_alts) < 0)
894 return;
895 }
896
897 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
898 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
899 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
900 else
901 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
902 }
903 } else {
904 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
905 usb_kill_anchored_urbs(&data->isoc_anchor);
906
907 __set_isoc_interface(hdev, 0);
908 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
909 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
910 }
911 }
912
913 static void btusb_waker(struct work_struct *work)
914 {
915 struct btusb_data *data = container_of(work, struct btusb_data, waker);
916 int err;
917
918 err = usb_autopm_get_interface(data->intf);
919 if (err < 0)
920 return;
921
922 usb_autopm_put_interface(data->intf);
923 }
924
925 static int btusb_probe(struct usb_interface *intf,
926 const struct usb_device_id *id)
927 {
928 struct usb_endpoint_descriptor *ep_desc;
929 struct btusb_data *data;
930 struct hci_dev *hdev;
931 int i, err;
932
933 BT_DBG("intf %p id %p", intf, id);
934
935 /* interface numbers are hardcoded in the spec */
936 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
937 return -ENODEV;
938
939 if (!id->driver_info) {
940 const struct usb_device_id *match;
941 match = usb_match_id(intf, blacklist_table);
942 if (match)
943 id = match;
944 }
945
946 if (id->driver_info == BTUSB_IGNORE)
947 return -ENODEV;
948
949 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
950 return -ENODEV;
951
952 if (ignore_csr && id->driver_info & BTUSB_CSR)
953 return -ENODEV;
954
955 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
956 return -ENODEV;
957
958 if (id->driver_info & BTUSB_ATH3012) {
959 struct usb_device *udev = interface_to_usbdev(intf);
960
961 /* Old firmware would otherwise let ath3k driver load
962 * patch and sysconfig files */
963 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
964 return -ENODEV;
965 }
966
967 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
968 if (!data)
969 return -ENOMEM;
970
971 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
972 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
973
974 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
975 data->intr_ep = ep_desc;
976 continue;
977 }
978
979 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
980 data->bulk_tx_ep = ep_desc;
981 continue;
982 }
983
984 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
985 data->bulk_rx_ep = ep_desc;
986 continue;
987 }
988 }
989
990 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
991 return -ENODEV;
992
993 data->cmdreq_type = USB_TYPE_CLASS;
994
995 data->udev = interface_to_usbdev(intf);
996 data->intf = intf;
997
998 spin_lock_init(&data->lock);
999
1000 INIT_WORK(&data->work, btusb_work);
1001 INIT_WORK(&data->waker, btusb_waker);
1002 spin_lock_init(&data->txlock);
1003
1004 init_usb_anchor(&data->tx_anchor);
1005 init_usb_anchor(&data->intr_anchor);
1006 init_usb_anchor(&data->bulk_anchor);
1007 init_usb_anchor(&data->isoc_anchor);
1008 init_usb_anchor(&data->deferred);
1009
1010 hdev = hci_alloc_dev();
1011 if (!hdev)
1012 return -ENOMEM;
1013
1014 hdev->bus = HCI_USB;
1015 hci_set_drvdata(hdev, data);
1016
1017 data->hdev = hdev;
1018
1019 SET_HCIDEV_DEV(hdev, &intf->dev);
1020
1021 hdev->open = btusb_open;
1022 hdev->close = btusb_close;
1023 hdev->flush = btusb_flush;
1024 hdev->send = btusb_send_frame;
1025 hdev->notify = btusb_notify;
1026
1027 /* Interface numbers are hardcoded in the specification */
1028 data->isoc = usb_ifnum_to_if(data->udev, 1);
1029
1030 if (!reset)
1031 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1032
1033 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1034 if (!disable_scofix)
1035 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1036 }
1037
1038 if (id->driver_info & BTUSB_BROKEN_ISOC)
1039 data->isoc = NULL;
1040
1041 if (id->driver_info & BTUSB_DIGIANSWER) {
1042 data->cmdreq_type = USB_TYPE_VENDOR;
1043 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1044 }
1045
1046 if (id->driver_info & BTUSB_CSR) {
1047 struct usb_device *udev = data->udev;
1048
1049 /* Old firmware would otherwise execute USB reset */
1050 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1051 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1052 }
1053
1054 if (id->driver_info & BTUSB_SNIFFER) {
1055 struct usb_device *udev = data->udev;
1056
1057 /* New sniffer firmware has crippled HCI interface */
1058 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1059 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1060
1061 data->isoc = NULL;
1062 }
1063
1064 if (id->driver_info & BTUSB_BCM92035) {
1065 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1066 struct sk_buff *skb;
1067
1068 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1069 if (skb) {
1070 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1071 skb_queue_tail(&hdev->driver_init, skb);
1072 }
1073 }
1074
1075 if (data->isoc) {
1076 err = usb_driver_claim_interface(&btusb_driver,
1077 data->isoc, data);
1078 if (err < 0) {
1079 hci_free_dev(hdev);
1080 return err;
1081 }
1082 }
1083
1084 err = hci_register_dev(hdev);
1085 if (err < 0) {
1086 hci_free_dev(hdev);
1087 return err;
1088 }
1089
1090 usb_set_intfdata(intf, data);
1091
1092 return 0;
1093 }
1094
1095 static void btusb_disconnect(struct usb_interface *intf)
1096 {
1097 struct btusb_data *data = usb_get_intfdata(intf);
1098 struct hci_dev *hdev;
1099
1100 BT_DBG("intf %p", intf);
1101
1102 if (!data)
1103 return;
1104
1105 hdev = data->hdev;
1106 usb_set_intfdata(data->intf, NULL);
1107
1108 if (data->isoc)
1109 usb_set_intfdata(data->isoc, NULL);
1110
1111 hci_unregister_dev(hdev);
1112
1113 if (intf == data->isoc)
1114 usb_driver_release_interface(&btusb_driver, data->intf);
1115 else if (data->isoc)
1116 usb_driver_release_interface(&btusb_driver, data->isoc);
1117
1118 hci_free_dev(hdev);
1119 }
1120
1121 #ifdef CONFIG_PM
1122 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1123 {
1124 struct btusb_data *data = usb_get_intfdata(intf);
1125
1126 BT_DBG("intf %p", intf);
1127
1128 if (data->suspend_count++)
1129 return 0;
1130
1131 spin_lock_irq(&data->txlock);
1132 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1133 set_bit(BTUSB_SUSPENDING, &data->flags);
1134 spin_unlock_irq(&data->txlock);
1135 } else {
1136 spin_unlock_irq(&data->txlock);
1137 data->suspend_count--;
1138 return -EBUSY;
1139 }
1140
1141 cancel_work_sync(&data->work);
1142
1143 btusb_stop_traffic(data);
1144 usb_kill_anchored_urbs(&data->tx_anchor);
1145
1146 return 0;
1147 }
1148
1149 static void play_deferred(struct btusb_data *data)
1150 {
1151 struct urb *urb;
1152 int err;
1153
1154 while ((urb = usb_get_from_anchor(&data->deferred))) {
1155 err = usb_submit_urb(urb, GFP_ATOMIC);
1156 if (err < 0)
1157 break;
1158
1159 data->tx_in_flight++;
1160 }
1161 usb_scuttle_anchored_urbs(&data->deferred);
1162 }
1163
1164 static int btusb_resume(struct usb_interface *intf)
1165 {
1166 struct btusb_data *data = usb_get_intfdata(intf);
1167 struct hci_dev *hdev = data->hdev;
1168 int err = 0;
1169
1170 BT_DBG("intf %p", intf);
1171
1172 if (--data->suspend_count)
1173 return 0;
1174
1175 if (!test_bit(HCI_RUNNING, &hdev->flags))
1176 goto done;
1177
1178 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1179 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1180 if (err < 0) {
1181 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1182 goto failed;
1183 }
1184 }
1185
1186 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1187 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1188 if (err < 0) {
1189 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1190 goto failed;
1191 }
1192
1193 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1194 }
1195
1196 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1197 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1198 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1199 else
1200 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1201 }
1202
1203 spin_lock_irq(&data->txlock);
1204 play_deferred(data);
1205 clear_bit(BTUSB_SUSPENDING, &data->flags);
1206 spin_unlock_irq(&data->txlock);
1207 schedule_work(&data->work);
1208
1209 return 0;
1210
1211 failed:
1212 usb_scuttle_anchored_urbs(&data->deferred);
1213 done:
1214 spin_lock_irq(&data->txlock);
1215 clear_bit(BTUSB_SUSPENDING, &data->flags);
1216 spin_unlock_irq(&data->txlock);
1217
1218 return err;
1219 }
1220 #endif
1221
1222 static struct usb_driver btusb_driver = {
1223 .name = "btusb",
1224 .probe = btusb_probe,
1225 .disconnect = btusb_disconnect,
1226 #ifdef CONFIG_PM
1227 .suspend = btusb_suspend,
1228 .resume = btusb_resume,
1229 #endif
1230 .id_table = btusb_table,
1231 .supports_autosuspend = 1,
1232 .disable_hub_initiated_lpm = 1,
1233 };
1234
1235 module_usb_driver(btusb_driver);
1236
1237 module_param(ignore_dga, bool, 0644);
1238 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1239
1240 module_param(ignore_csr, bool, 0644);
1241 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1242
1243 module_param(ignore_sniffer, bool, 0644);
1244 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1245
1246 module_param(disable_scofix, bool, 0644);
1247 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1248
1249 module_param(force_scofix, bool, 0644);
1250 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1251
1252 module_param(reset, bool, 0644);
1253 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1254
1255 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1256 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1257 MODULE_VERSION(VERSION);
1258 MODULE_LICENSE("GPL");
Linux with added FPC-III support