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Merge branch 'acpi-lpss'
[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 /* 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, 0x0036), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
136 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
142 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
143 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
144 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
145 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
146 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
147 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
148 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
149 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
150 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
151
152 /* Atheros AR5BBU12 with sflash firmware */
153 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
154
155 /* Atheros AR5BBU12 with sflash firmware */
156 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
157 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
158
159 /* Broadcom BCM2035 */
160 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
161 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
163
164 /* Broadcom BCM2045 */
165 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
166 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
167
168 /* IBM/Lenovo ThinkPad with Broadcom chip */
169 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
170 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
171
172 /* HP laptop with Broadcom chip */
173 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
174
175 /* Dell laptop with Broadcom chip */
176 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
177
178 /* Dell Wireless 370 and 410 devices */
179 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
180 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
181
182 /* Belkin F8T012 and F8T013 devices */
183 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
184 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
185
186 /* Asus WL-BTD202 device */
187 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
188
189 /* Kensington Bluetooth USB adapter */
190 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
191
192 /* RTX Telecom based adapters with buggy SCO support */
193 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
194 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
195
196 /* CONWISE Technology based adapters with buggy SCO support */
197 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
198
199 /* Digianswer devices */
200 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
201 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
202
203 /* CSR BlueCore Bluetooth Sniffer */
204 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
205
206 /* Frontline ComProbe Bluetooth Sniffer */
207 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
208
209 { } /* Terminating entry */
210 };
211
212 #define BTUSB_MAX_ISOC_FRAMES 10
213
214 #define BTUSB_INTR_RUNNING 0
215 #define BTUSB_BULK_RUNNING 1
216 #define BTUSB_ISOC_RUNNING 2
217 #define BTUSB_SUSPENDING 3
218 #define BTUSB_DID_ISO_RESUME 4
219
220 struct btusb_data {
221 struct hci_dev *hdev;
222 struct usb_device *udev;
223 struct usb_interface *intf;
224 struct usb_interface *isoc;
225
226 spinlock_t lock;
227
228 unsigned long flags;
229
230 struct work_struct work;
231 struct work_struct waker;
232
233 struct usb_anchor tx_anchor;
234 struct usb_anchor intr_anchor;
235 struct usb_anchor bulk_anchor;
236 struct usb_anchor isoc_anchor;
237 struct usb_anchor deferred;
238 int tx_in_flight;
239 spinlock_t txlock;
240
241 struct usb_endpoint_descriptor *intr_ep;
242 struct usb_endpoint_descriptor *bulk_tx_ep;
243 struct usb_endpoint_descriptor *bulk_rx_ep;
244 struct usb_endpoint_descriptor *isoc_tx_ep;
245 struct usb_endpoint_descriptor *isoc_rx_ep;
246
247 __u8 cmdreq_type;
248
249 unsigned int sco_num;
250 int isoc_altsetting;
251 int suspend_count;
252 };
253
254 static int inc_tx(struct btusb_data *data)
255 {
256 unsigned long flags;
257 int rv;
258
259 spin_lock_irqsave(&data->txlock, flags);
260 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
261 if (!rv)
262 data->tx_in_flight++;
263 spin_unlock_irqrestore(&data->txlock, flags);
264
265 return rv;
266 }
267
268 static void btusb_intr_complete(struct urb *urb)
269 {
270 struct hci_dev *hdev = urb->context;
271 struct btusb_data *data = hci_get_drvdata(hdev);
272 int err;
273
274 BT_DBG("%s urb %p status %d count %d", hdev->name,
275 urb, urb->status, urb->actual_length);
276
277 if (!test_bit(HCI_RUNNING, &hdev->flags))
278 return;
279
280 if (urb->status == 0) {
281 hdev->stat.byte_rx += urb->actual_length;
282
283 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
284 urb->transfer_buffer,
285 urb->actual_length) < 0) {
286 BT_ERR("%s corrupted event packet", hdev->name);
287 hdev->stat.err_rx++;
288 }
289 }
290
291 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
292 return;
293
294 usb_mark_last_busy(data->udev);
295 usb_anchor_urb(urb, &data->intr_anchor);
296
297 err = usb_submit_urb(urb, GFP_ATOMIC);
298 if (err < 0) {
299 /* -EPERM: urb is being killed;
300 * -ENODEV: device got disconnected */
301 if (err != -EPERM && err != -ENODEV)
302 BT_ERR("%s urb %p failed to resubmit (%d)",
303 hdev->name, urb, -err);
304 usb_unanchor_urb(urb);
305 }
306 }
307
308 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
309 {
310 struct btusb_data *data = hci_get_drvdata(hdev);
311 struct urb *urb;
312 unsigned char *buf;
313 unsigned int pipe;
314 int err, size;
315
316 BT_DBG("%s", hdev->name);
317
318 if (!data->intr_ep)
319 return -ENODEV;
320
321 urb = usb_alloc_urb(0, mem_flags);
322 if (!urb)
323 return -ENOMEM;
324
325 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
326
327 buf = kmalloc(size, mem_flags);
328 if (!buf) {
329 usb_free_urb(urb);
330 return -ENOMEM;
331 }
332
333 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
334
335 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
336 btusb_intr_complete, hdev,
337 data->intr_ep->bInterval);
338
339 urb->transfer_flags |= URB_FREE_BUFFER;
340
341 usb_anchor_urb(urb, &data->intr_anchor);
342
343 err = usb_submit_urb(urb, mem_flags);
344 if (err < 0) {
345 if (err != -EPERM && err != -ENODEV)
346 BT_ERR("%s urb %p submission failed (%d)",
347 hdev->name, urb, -err);
348 usb_unanchor_urb(urb);
349 }
350
351 usb_free_urb(urb);
352
353 return err;
354 }
355
356 static void btusb_bulk_complete(struct urb *urb)
357 {
358 struct hci_dev *hdev = urb->context;
359 struct btusb_data *data = hci_get_drvdata(hdev);
360 int err;
361
362 BT_DBG("%s urb %p status %d count %d", hdev->name,
363 urb, urb->status, urb->actual_length);
364
365 if (!test_bit(HCI_RUNNING, &hdev->flags))
366 return;
367
368 if (urb->status == 0) {
369 hdev->stat.byte_rx += urb->actual_length;
370
371 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
372 urb->transfer_buffer,
373 urb->actual_length) < 0) {
374 BT_ERR("%s corrupted ACL packet", hdev->name);
375 hdev->stat.err_rx++;
376 }
377 }
378
379 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
380 return;
381
382 usb_anchor_urb(urb, &data->bulk_anchor);
383 usb_mark_last_busy(data->udev);
384
385 err = usb_submit_urb(urb, GFP_ATOMIC);
386 if (err < 0) {
387 /* -EPERM: urb is being killed;
388 * -ENODEV: device got disconnected */
389 if (err != -EPERM && err != -ENODEV)
390 BT_ERR("%s urb %p failed to resubmit (%d)",
391 hdev->name, urb, -err);
392 usb_unanchor_urb(urb);
393 }
394 }
395
396 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
397 {
398 struct btusb_data *data = hci_get_drvdata(hdev);
399 struct urb *urb;
400 unsigned char *buf;
401 unsigned int pipe;
402 int err, size = HCI_MAX_FRAME_SIZE;
403
404 BT_DBG("%s", hdev->name);
405
406 if (!data->bulk_rx_ep)
407 return -ENODEV;
408
409 urb = usb_alloc_urb(0, mem_flags);
410 if (!urb)
411 return -ENOMEM;
412
413 buf = kmalloc(size, mem_flags);
414 if (!buf) {
415 usb_free_urb(urb);
416 return -ENOMEM;
417 }
418
419 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
420
421 usb_fill_bulk_urb(urb, data->udev, pipe,
422 buf, size, btusb_bulk_complete, hdev);
423
424 urb->transfer_flags |= URB_FREE_BUFFER;
425
426 usb_mark_last_busy(data->udev);
427 usb_anchor_urb(urb, &data->bulk_anchor);
428
429 err = usb_submit_urb(urb, mem_flags);
430 if (err < 0) {
431 if (err != -EPERM && err != -ENODEV)
432 BT_ERR("%s urb %p submission failed (%d)",
433 hdev->name, urb, -err);
434 usb_unanchor_urb(urb);
435 }
436
437 usb_free_urb(urb);
438
439 return err;
440 }
441
442 static void btusb_isoc_complete(struct urb *urb)
443 {
444 struct hci_dev *hdev = urb->context;
445 struct btusb_data *data = hci_get_drvdata(hdev);
446 int i, err;
447
448 BT_DBG("%s urb %p status %d count %d", hdev->name,
449 urb, urb->status, urb->actual_length);
450
451 if (!test_bit(HCI_RUNNING, &hdev->flags))
452 return;
453
454 if (urb->status == 0) {
455 for (i = 0; i < urb->number_of_packets; i++) {
456 unsigned int offset = urb->iso_frame_desc[i].offset;
457 unsigned int length = urb->iso_frame_desc[i].actual_length;
458
459 if (urb->iso_frame_desc[i].status)
460 continue;
461
462 hdev->stat.byte_rx += length;
463
464 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
465 urb->transfer_buffer + offset,
466 length) < 0) {
467 BT_ERR("%s corrupted SCO packet", hdev->name);
468 hdev->stat.err_rx++;
469 }
470 }
471 }
472
473 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
474 return;
475
476 usb_anchor_urb(urb, &data->isoc_anchor);
477
478 err = usb_submit_urb(urb, GFP_ATOMIC);
479 if (err < 0) {
480 /* -EPERM: urb is being killed;
481 * -ENODEV: device got disconnected */
482 if (err != -EPERM && err != -ENODEV)
483 BT_ERR("%s urb %p failed to resubmit (%d)",
484 hdev->name, urb, -err);
485 usb_unanchor_urb(urb);
486 }
487 }
488
489 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
490 {
491 int i, offset = 0;
492
493 BT_DBG("len %d mtu %d", len, mtu);
494
495 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
496 i++, offset += mtu, len -= mtu) {
497 urb->iso_frame_desc[i].offset = offset;
498 urb->iso_frame_desc[i].length = mtu;
499 }
500
501 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
502 urb->iso_frame_desc[i].offset = offset;
503 urb->iso_frame_desc[i].length = len;
504 i++;
505 }
506
507 urb->number_of_packets = i;
508 }
509
510 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
511 {
512 struct btusb_data *data = hci_get_drvdata(hdev);
513 struct urb *urb;
514 unsigned char *buf;
515 unsigned int pipe;
516 int err, size;
517
518 BT_DBG("%s", hdev->name);
519
520 if (!data->isoc_rx_ep)
521 return -ENODEV;
522
523 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
524 if (!urb)
525 return -ENOMEM;
526
527 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
528 BTUSB_MAX_ISOC_FRAMES;
529
530 buf = kmalloc(size, mem_flags);
531 if (!buf) {
532 usb_free_urb(urb);
533 return -ENOMEM;
534 }
535
536 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
537
538 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
539 hdev, data->isoc_rx_ep->bInterval);
540
541 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
542
543 __fill_isoc_descriptor(urb, size,
544 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
545
546 usb_anchor_urb(urb, &data->isoc_anchor);
547
548 err = usb_submit_urb(urb, mem_flags);
549 if (err < 0) {
550 if (err != -EPERM && err != -ENODEV)
551 BT_ERR("%s urb %p submission failed (%d)",
552 hdev->name, urb, -err);
553 usb_unanchor_urb(urb);
554 }
555
556 usb_free_urb(urb);
557
558 return err;
559 }
560
561 static void btusb_tx_complete(struct urb *urb)
562 {
563 struct sk_buff *skb = urb->context;
564 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
565 struct btusb_data *data = hci_get_drvdata(hdev);
566
567 BT_DBG("%s urb %p status %d count %d", hdev->name,
568 urb, urb->status, urb->actual_length);
569
570 if (!test_bit(HCI_RUNNING, &hdev->flags))
571 goto done;
572
573 if (!urb->status)
574 hdev->stat.byte_tx += urb->transfer_buffer_length;
575 else
576 hdev->stat.err_tx++;
577
578 done:
579 spin_lock(&data->txlock);
580 data->tx_in_flight--;
581 spin_unlock(&data->txlock);
582
583 kfree(urb->setup_packet);
584
585 kfree_skb(skb);
586 }
587
588 static void btusb_isoc_tx_complete(struct urb *urb)
589 {
590 struct sk_buff *skb = urb->context;
591 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
592
593 BT_DBG("%s urb %p status %d count %d", hdev->name,
594 urb, urb->status, urb->actual_length);
595
596 if (!test_bit(HCI_RUNNING, &hdev->flags))
597 goto done;
598
599 if (!urb->status)
600 hdev->stat.byte_tx += urb->transfer_buffer_length;
601 else
602 hdev->stat.err_tx++;
603
604 done:
605 kfree(urb->setup_packet);
606
607 kfree_skb(skb);
608 }
609
610 static int btusb_open(struct hci_dev *hdev)
611 {
612 struct btusb_data *data = hci_get_drvdata(hdev);
613 int err;
614
615 BT_DBG("%s", hdev->name);
616
617 err = usb_autopm_get_interface(data->intf);
618 if (err < 0)
619 return err;
620
621 data->intf->needs_remote_wakeup = 1;
622
623 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
624 goto done;
625
626 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
627 goto done;
628
629 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
630 if (err < 0)
631 goto failed;
632
633 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
634 if (err < 0) {
635 usb_kill_anchored_urbs(&data->intr_anchor);
636 goto failed;
637 }
638
639 set_bit(BTUSB_BULK_RUNNING, &data->flags);
640 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
641
642 done:
643 usb_autopm_put_interface(data->intf);
644 return 0;
645
646 failed:
647 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
648 clear_bit(HCI_RUNNING, &hdev->flags);
649 usb_autopm_put_interface(data->intf);
650 return err;
651 }
652
653 static void btusb_stop_traffic(struct btusb_data *data)
654 {
655 usb_kill_anchored_urbs(&data->intr_anchor);
656 usb_kill_anchored_urbs(&data->bulk_anchor);
657 usb_kill_anchored_urbs(&data->isoc_anchor);
658 }
659
660 static int btusb_close(struct hci_dev *hdev)
661 {
662 struct btusb_data *data = hci_get_drvdata(hdev);
663 int err;
664
665 BT_DBG("%s", hdev->name);
666
667 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
668 return 0;
669
670 cancel_work_sync(&data->work);
671 cancel_work_sync(&data->waker);
672
673 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
674 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
675 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
676
677 btusb_stop_traffic(data);
678 err = usb_autopm_get_interface(data->intf);
679 if (err < 0)
680 goto failed;
681
682 data->intf->needs_remote_wakeup = 0;
683 usb_autopm_put_interface(data->intf);
684
685 failed:
686 usb_scuttle_anchored_urbs(&data->deferred);
687 return 0;
688 }
689
690 static int btusb_flush(struct hci_dev *hdev)
691 {
692 struct btusb_data *data = hci_get_drvdata(hdev);
693
694 BT_DBG("%s", hdev->name);
695
696 usb_kill_anchored_urbs(&data->tx_anchor);
697
698 return 0;
699 }
700
701 static int btusb_send_frame(struct sk_buff *skb)
702 {
703 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
704 struct btusb_data *data = hci_get_drvdata(hdev);
705 struct usb_ctrlrequest *dr;
706 struct urb *urb;
707 unsigned int pipe;
708 int err;
709
710 BT_DBG("%s", hdev->name);
711
712 if (!test_bit(HCI_RUNNING, &hdev->flags))
713 return -EBUSY;
714
715 switch (bt_cb(skb)->pkt_type) {
716 case HCI_COMMAND_PKT:
717 urb = usb_alloc_urb(0, GFP_ATOMIC);
718 if (!urb)
719 return -ENOMEM;
720
721 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
722 if (!dr) {
723 usb_free_urb(urb);
724 return -ENOMEM;
725 }
726
727 dr->bRequestType = data->cmdreq_type;
728 dr->bRequest = 0;
729 dr->wIndex = 0;
730 dr->wValue = 0;
731 dr->wLength = __cpu_to_le16(skb->len);
732
733 pipe = usb_sndctrlpipe(data->udev, 0x00);
734
735 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
736 skb->data, skb->len, btusb_tx_complete, skb);
737
738 hdev->stat.cmd_tx++;
739 break;
740
741 case HCI_ACLDATA_PKT:
742 if (!data->bulk_tx_ep)
743 return -ENODEV;
744
745 urb = usb_alloc_urb(0, GFP_ATOMIC);
746 if (!urb)
747 return -ENOMEM;
748
749 pipe = usb_sndbulkpipe(data->udev,
750 data->bulk_tx_ep->bEndpointAddress);
751
752 usb_fill_bulk_urb(urb, data->udev, pipe,
753 skb->data, skb->len, btusb_tx_complete, skb);
754
755 hdev->stat.acl_tx++;
756 break;
757
758 case HCI_SCODATA_PKT:
759 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
760 return -ENODEV;
761
762 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
763 if (!urb)
764 return -ENOMEM;
765
766 pipe = usb_sndisocpipe(data->udev,
767 data->isoc_tx_ep->bEndpointAddress);
768
769 usb_fill_int_urb(urb, data->udev, pipe,
770 skb->data, skb->len, btusb_isoc_tx_complete,
771 skb, data->isoc_tx_ep->bInterval);
772
773 urb->transfer_flags = URB_ISO_ASAP;
774
775 __fill_isoc_descriptor(urb, skb->len,
776 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
777
778 hdev->stat.sco_tx++;
779 goto skip_waking;
780
781 default:
782 return -EILSEQ;
783 }
784
785 err = inc_tx(data);
786 if (err) {
787 usb_anchor_urb(urb, &data->deferred);
788 schedule_work(&data->waker);
789 err = 0;
790 goto done;
791 }
792
793 skip_waking:
794 usb_anchor_urb(urb, &data->tx_anchor);
795
796 err = usb_submit_urb(urb, GFP_ATOMIC);
797 if (err < 0) {
798 if (err != -EPERM && err != -ENODEV)
799 BT_ERR("%s urb %p submission failed (%d)",
800 hdev->name, urb, -err);
801 kfree(urb->setup_packet);
802 usb_unanchor_urb(urb);
803 } else {
804 usb_mark_last_busy(data->udev);
805 }
806
807 done:
808 usb_free_urb(urb);
809 return err;
810 }
811
812 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
813 {
814 struct btusb_data *data = hci_get_drvdata(hdev);
815
816 BT_DBG("%s evt %d", hdev->name, evt);
817
818 if (hdev->conn_hash.sco_num != data->sco_num) {
819 data->sco_num = hdev->conn_hash.sco_num;
820 schedule_work(&data->work);
821 }
822 }
823
824 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
825 {
826 struct btusb_data *data = hci_get_drvdata(hdev);
827 struct usb_interface *intf = data->isoc;
828 struct usb_endpoint_descriptor *ep_desc;
829 int i, err;
830
831 if (!data->isoc)
832 return -ENODEV;
833
834 err = usb_set_interface(data->udev, 1, altsetting);
835 if (err < 0) {
836 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
837 return err;
838 }
839
840 data->isoc_altsetting = altsetting;
841
842 data->isoc_tx_ep = NULL;
843 data->isoc_rx_ep = NULL;
844
845 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
846 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
847
848 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
849 data->isoc_tx_ep = ep_desc;
850 continue;
851 }
852
853 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
854 data->isoc_rx_ep = ep_desc;
855 continue;
856 }
857 }
858
859 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
860 BT_ERR("%s invalid SCO descriptors", hdev->name);
861 return -ENODEV;
862 }
863
864 return 0;
865 }
866
867 static void btusb_work(struct work_struct *work)
868 {
869 struct btusb_data *data = container_of(work, struct btusb_data, work);
870 struct hci_dev *hdev = data->hdev;
871 int new_alts;
872 int err;
873
874 if (hdev->conn_hash.sco_num > 0) {
875 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
876 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
877 if (err < 0) {
878 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
879 usb_kill_anchored_urbs(&data->isoc_anchor);
880 return;
881 }
882
883 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
884 }
885
886 if (hdev->voice_setting & 0x0020) {
887 static const int alts[3] = { 2, 4, 5 };
888 new_alts = alts[hdev->conn_hash.sco_num - 1];
889 } else {
890 new_alts = hdev->conn_hash.sco_num;
891 }
892
893 if (data->isoc_altsetting != new_alts) {
894 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
895 usb_kill_anchored_urbs(&data->isoc_anchor);
896
897 if (__set_isoc_interface(hdev, new_alts) < 0)
898 return;
899 }
900
901 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
902 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
903 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
904 else
905 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
906 }
907 } else {
908 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
909 usb_kill_anchored_urbs(&data->isoc_anchor);
910
911 __set_isoc_interface(hdev, 0);
912 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
913 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
914 }
915 }
916
917 static void btusb_waker(struct work_struct *work)
918 {
919 struct btusb_data *data = container_of(work, struct btusb_data, waker);
920 int err;
921
922 err = usb_autopm_get_interface(data->intf);
923 if (err < 0)
924 return;
925
926 usb_autopm_put_interface(data->intf);
927 }
928
929 static int btusb_probe(struct usb_interface *intf,
930 const struct usb_device_id *id)
931 {
932 struct usb_endpoint_descriptor *ep_desc;
933 struct btusb_data *data;
934 struct hci_dev *hdev;
935 int i, err;
936
937 BT_DBG("intf %p id %p", intf, id);
938
939 /* interface numbers are hardcoded in the spec */
940 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
941 return -ENODEV;
942
943 if (!id->driver_info) {
944 const struct usb_device_id *match;
945 match = usb_match_id(intf, blacklist_table);
946 if (match)
947 id = match;
948 }
949
950 if (id->driver_info == BTUSB_IGNORE)
951 return -ENODEV;
952
953 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
954 return -ENODEV;
955
956 if (ignore_csr && id->driver_info & BTUSB_CSR)
957 return -ENODEV;
958
959 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
960 return -ENODEV;
961
962 if (id->driver_info & BTUSB_ATH3012) {
963 struct usb_device *udev = interface_to_usbdev(intf);
964
965 /* Old firmware would otherwise let ath3k driver load
966 * patch and sysconfig files */
967 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
968 return -ENODEV;
969 }
970
971 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
972 if (!data)
973 return -ENOMEM;
974
975 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
976 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
977
978 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
979 data->intr_ep = ep_desc;
980 continue;
981 }
982
983 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
984 data->bulk_tx_ep = ep_desc;
985 continue;
986 }
987
988 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
989 data->bulk_rx_ep = ep_desc;
990 continue;
991 }
992 }
993
994 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
995 return -ENODEV;
996
997 data->cmdreq_type = USB_TYPE_CLASS;
998
999 data->udev = interface_to_usbdev(intf);
1000 data->intf = intf;
1001
1002 spin_lock_init(&data->lock);
1003
1004 INIT_WORK(&data->work, btusb_work);
1005 INIT_WORK(&data->waker, btusb_waker);
1006 spin_lock_init(&data->txlock);
1007
1008 init_usb_anchor(&data->tx_anchor);
1009 init_usb_anchor(&data->intr_anchor);
1010 init_usb_anchor(&data->bulk_anchor);
1011 init_usb_anchor(&data->isoc_anchor);
1012 init_usb_anchor(&data->deferred);
1013
1014 hdev = hci_alloc_dev();
1015 if (!hdev)
1016 return -ENOMEM;
1017
1018 hdev->bus = HCI_USB;
1019 hci_set_drvdata(hdev, data);
1020
1021 data->hdev = hdev;
1022
1023 SET_HCIDEV_DEV(hdev, &intf->dev);
1024
1025 hdev->open = btusb_open;
1026 hdev->close = btusb_close;
1027 hdev->flush = btusb_flush;
1028 hdev->send = btusb_send_frame;
1029 hdev->notify = btusb_notify;
1030
1031 /* Interface numbers are hardcoded in the specification */
1032 data->isoc = usb_ifnum_to_if(data->udev, 1);
1033
1034 if (!reset)
1035 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1036
1037 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1038 if (!disable_scofix)
1039 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1040 }
1041
1042 if (id->driver_info & BTUSB_BROKEN_ISOC)
1043 data->isoc = NULL;
1044
1045 if (id->driver_info & BTUSB_DIGIANSWER) {
1046 data->cmdreq_type = USB_TYPE_VENDOR;
1047 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1048 }
1049
1050 if (id->driver_info & BTUSB_CSR) {
1051 struct usb_device *udev = data->udev;
1052
1053 /* Old firmware would otherwise execute USB reset */
1054 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1055 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1056 }
1057
1058 if (id->driver_info & BTUSB_SNIFFER) {
1059 struct usb_device *udev = data->udev;
1060
1061 /* New sniffer firmware has crippled HCI interface */
1062 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1063 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1064
1065 data->isoc = NULL;
1066 }
1067
1068 if (id->driver_info & BTUSB_BCM92035) {
1069 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1070 struct sk_buff *skb;
1071
1072 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1073 if (skb) {
1074 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1075 skb_queue_tail(&hdev->driver_init, skb);
1076 }
1077 }
1078
1079 if (data->isoc) {
1080 err = usb_driver_claim_interface(&btusb_driver,
1081 data->isoc, data);
1082 if (err < 0) {
1083 hci_free_dev(hdev);
1084 return err;
1085 }
1086 }
1087
1088 err = hci_register_dev(hdev);
1089 if (err < 0) {
1090 hci_free_dev(hdev);
1091 return err;
1092 }
1093
1094 usb_set_intfdata(intf, data);
1095
1096 return 0;
1097 }
1098
1099 static void btusb_disconnect(struct usb_interface *intf)
1100 {
1101 struct btusb_data *data = usb_get_intfdata(intf);
1102 struct hci_dev *hdev;
1103
1104 BT_DBG("intf %p", intf);
1105
1106 if (!data)
1107 return;
1108
1109 hdev = data->hdev;
1110 usb_set_intfdata(data->intf, NULL);
1111
1112 if (data->isoc)
1113 usb_set_intfdata(data->isoc, NULL);
1114
1115 hci_unregister_dev(hdev);
1116
1117 if (intf == data->isoc)
1118 usb_driver_release_interface(&btusb_driver, data->intf);
1119 else if (data->isoc)
1120 usb_driver_release_interface(&btusb_driver, data->isoc);
1121
1122 hci_free_dev(hdev);
1123 }
1124
1125 #ifdef CONFIG_PM
1126 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1127 {
1128 struct btusb_data *data = usb_get_intfdata(intf);
1129
1130 BT_DBG("intf %p", intf);
1131
1132 if (data->suspend_count++)
1133 return 0;
1134
1135 spin_lock_irq(&data->txlock);
1136 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1137 set_bit(BTUSB_SUSPENDING, &data->flags);
1138 spin_unlock_irq(&data->txlock);
1139 } else {
1140 spin_unlock_irq(&data->txlock);
1141 data->suspend_count--;
1142 return -EBUSY;
1143 }
1144
1145 cancel_work_sync(&data->work);
1146
1147 btusb_stop_traffic(data);
1148 usb_kill_anchored_urbs(&data->tx_anchor);
1149
1150 return 0;
1151 }
1152
1153 static void play_deferred(struct btusb_data *data)
1154 {
1155 struct urb *urb;
1156 int err;
1157
1158 while ((urb = usb_get_from_anchor(&data->deferred))) {
1159 err = usb_submit_urb(urb, GFP_ATOMIC);
1160 if (err < 0)
1161 break;
1162
1163 data->tx_in_flight++;
1164 }
1165 usb_scuttle_anchored_urbs(&data->deferred);
1166 }
1167
1168 static int btusb_resume(struct usb_interface *intf)
1169 {
1170 struct btusb_data *data = usb_get_intfdata(intf);
1171 struct hci_dev *hdev = data->hdev;
1172 int err = 0;
1173
1174 BT_DBG("intf %p", intf);
1175
1176 if (--data->suspend_count)
1177 return 0;
1178
1179 if (!test_bit(HCI_RUNNING, &hdev->flags))
1180 goto done;
1181
1182 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1183 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1184 if (err < 0) {
1185 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1186 goto failed;
1187 }
1188 }
1189
1190 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1191 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1192 if (err < 0) {
1193 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1194 goto failed;
1195 }
1196
1197 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1198 }
1199
1200 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1201 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1202 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1203 else
1204 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1205 }
1206
1207 spin_lock_irq(&data->txlock);
1208 play_deferred(data);
1209 clear_bit(BTUSB_SUSPENDING, &data->flags);
1210 spin_unlock_irq(&data->txlock);
1211 schedule_work(&data->work);
1212
1213 return 0;
1214
1215 failed:
1216 usb_scuttle_anchored_urbs(&data->deferred);
1217 done:
1218 spin_lock_irq(&data->txlock);
1219 clear_bit(BTUSB_SUSPENDING, &data->flags);
1220 spin_unlock_irq(&data->txlock);
1221
1222 return err;
1223 }
1224 #endif
1225
1226 static struct usb_driver btusb_driver = {
1227 .name = "btusb",
1228 .probe = btusb_probe,
1229 .disconnect = btusb_disconnect,
1230 #ifdef CONFIG_PM
1231 .suspend = btusb_suspend,
1232 .resume = btusb_resume,
1233 #endif
1234 .id_table = btusb_table,
1235 .supports_autosuspend = 1,
1236 .disable_hub_initiated_lpm = 1,
1237 };
1238
1239 module_usb_driver(btusb_driver);
1240
1241 module_param(ignore_dga, bool, 0644);
1242 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1243
1244 module_param(ignore_csr, bool, 0644);
1245 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1246
1247 module_param(ignore_sniffer, bool, 0644);
1248 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1249
1250 module_param(disable_scofix, bool, 0644);
1251 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1252
1253 module_param(force_scofix, bool, 0644);
1254 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1255
1256 module_param(reset, bool, 0644);
1257 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1258
1259 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1260 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1261 MODULE_VERSION(VERSION);
1262 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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