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Merge tag 'for-v3.11' of git://git.infradead.org/battery-2.6
[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 #include <linux/firmware.h>
27
28 #include <net/bluetooth/bluetooth.h>
29 #include <net/bluetooth/hci_core.h>
30
31 #define VERSION "0.6"
32
33 static bool ignore_dga;
34 static bool ignore_csr;
35 static bool ignore_sniffer;
36 static bool disable_scofix;
37 static bool force_scofix;
38
39 static bool reset = 1;
40
41 static struct usb_driver btusb_driver;
42
43 #define BTUSB_IGNORE 0x01
44 #define BTUSB_DIGIANSWER 0x02
45 #define BTUSB_CSR 0x04
46 #define BTUSB_SNIFFER 0x08
47 #define BTUSB_BCM92035 0x10
48 #define BTUSB_BROKEN_ISOC 0x20
49 #define BTUSB_WRONG_SCO_MTU 0x40
50 #define BTUSB_ATH3012 0x80
51 #define BTUSB_INTEL 0x100
52
53 static struct usb_device_id btusb_table[] = {
54 /* Generic Bluetooth USB device */
55 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
56
57 /* Apple-specific (Broadcom) devices */
58 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
59
60 /* MediaTek MT76x0E */
61 { USB_DEVICE(0x0e8d, 0x763f) },
62
63 /* Broadcom SoftSailing reporting vendor specific */
64 { USB_DEVICE(0x0a5c, 0x21e1) },
65
66 /* Apple MacBookPro 7,1 */
67 { USB_DEVICE(0x05ac, 0x8213) },
68
69 /* Apple iMac11,1 */
70 { USB_DEVICE(0x05ac, 0x8215) },
71
72 /* Apple MacBookPro6,2 */
73 { USB_DEVICE(0x05ac, 0x8218) },
74
75 /* Apple MacBookAir3,1, MacBookAir3,2 */
76 { USB_DEVICE(0x05ac, 0x821b) },
77
78 /* Apple MacBookAir4,1 */
79 { USB_DEVICE(0x05ac, 0x821f) },
80
81 /* Apple MacBookPro8,2 */
82 { USB_DEVICE(0x05ac, 0x821a) },
83
84 /* Apple MacMini5,1 */
85 { USB_DEVICE(0x05ac, 0x8281) },
86
87 /* AVM BlueFRITZ! USB v2.0 */
88 { USB_DEVICE(0x057c, 0x3800) },
89
90 /* Bluetooth Ultraport Module from IBM */
91 { USB_DEVICE(0x04bf, 0x030a) },
92
93 /* ALPS Modules with non-standard id */
94 { USB_DEVICE(0x044e, 0x3001) },
95 { USB_DEVICE(0x044e, 0x3002) },
96
97 /* Ericsson with non-standard id */
98 { USB_DEVICE(0x0bdb, 0x1002) },
99
100 /* Canyon CN-BTU1 with HID interfaces */
101 { USB_DEVICE(0x0c10, 0x0000) },
102
103 /* Broadcom BCM20702A0 */
104 { USB_DEVICE(0x0b05, 0x17b5) },
105 { USB_DEVICE(0x04ca, 0x2003) },
106 { USB_DEVICE(0x0489, 0xe042) },
107 { USB_DEVICE(0x413c, 0x8197) },
108
109 /* Foxconn - Hon Hai */
110 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
111
112 /*Broadcom devices with vendor specific id */
113 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
114
115 { } /* Terminating entry */
116 };
117
118 MODULE_DEVICE_TABLE(usb, btusb_table);
119
120 static struct usb_device_id blacklist_table[] = {
121 /* CSR BlueCore devices */
122 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
123
124 /* Broadcom BCM2033 without firmware */
125 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
126
127 /* Atheros 3011 with sflash firmware */
128 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
129 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
130 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
131 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
132 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
133 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
134
135 /* Atheros AR9285 Malbec with sflash firmware */
136 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
137
138 /* Atheros 3012 with sflash firmware */
139 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
142 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
143 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
144 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
145 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
146 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
147 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
148 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
149 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
150 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
151 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
152 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
153 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
154 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
155 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
156 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
157
158 /* Atheros AR5BBU12 with sflash firmware */
159 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
160
161 /* Atheros AR5BBU12 with sflash firmware */
162 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
163 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
164
165 /* Broadcom BCM2035 */
166 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
167 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
168 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
169
170 /* Broadcom BCM2045 */
171 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
172 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
173
174 /* IBM/Lenovo ThinkPad with Broadcom chip */
175 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
176 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
177
178 /* HP laptop with Broadcom chip */
179 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
180
181 /* Dell laptop with Broadcom chip */
182 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
183
184 /* Dell Wireless 370 and 410 devices */
185 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
186 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
187
188 /* Belkin F8T012 and F8T013 devices */
189 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
190 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
191
192 /* Asus WL-BTD202 device */
193 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
194
195 /* Kensington Bluetooth USB adapter */
196 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
197
198 /* RTX Telecom based adapters with buggy SCO support */
199 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
200 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
201
202 /* CONWISE Technology based adapters with buggy SCO support */
203 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
204
205 /* Digianswer devices */
206 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
207 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
208
209 /* CSR BlueCore Bluetooth Sniffer */
210 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
211
212 /* Frontline ComProbe Bluetooth Sniffer */
213 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
214
215 /* Intel Bluetooth device */
216 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
217
218 { } /* Terminating entry */
219 };
220
221 #define BTUSB_MAX_ISOC_FRAMES 10
222
223 #define BTUSB_INTR_RUNNING 0
224 #define BTUSB_BULK_RUNNING 1
225 #define BTUSB_ISOC_RUNNING 2
226 #define BTUSB_SUSPENDING 3
227 #define BTUSB_DID_ISO_RESUME 4
228
229 struct btusb_data {
230 struct hci_dev *hdev;
231 struct usb_device *udev;
232 struct usb_interface *intf;
233 struct usb_interface *isoc;
234
235 spinlock_t lock;
236
237 unsigned long flags;
238
239 struct work_struct work;
240 struct work_struct waker;
241
242 struct usb_anchor tx_anchor;
243 struct usb_anchor intr_anchor;
244 struct usb_anchor bulk_anchor;
245 struct usb_anchor isoc_anchor;
246 struct usb_anchor deferred;
247 int tx_in_flight;
248 spinlock_t txlock;
249
250 struct usb_endpoint_descriptor *intr_ep;
251 struct usb_endpoint_descriptor *bulk_tx_ep;
252 struct usb_endpoint_descriptor *bulk_rx_ep;
253 struct usb_endpoint_descriptor *isoc_tx_ep;
254 struct usb_endpoint_descriptor *isoc_rx_ep;
255
256 __u8 cmdreq_type;
257
258 unsigned int sco_num;
259 int isoc_altsetting;
260 int suspend_count;
261 };
262
263 static int inc_tx(struct btusb_data *data)
264 {
265 unsigned long flags;
266 int rv;
267
268 spin_lock_irqsave(&data->txlock, flags);
269 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
270 if (!rv)
271 data->tx_in_flight++;
272 spin_unlock_irqrestore(&data->txlock, flags);
273
274 return rv;
275 }
276
277 static void btusb_intr_complete(struct urb *urb)
278 {
279 struct hci_dev *hdev = urb->context;
280 struct btusb_data *data = hci_get_drvdata(hdev);
281 int err;
282
283 BT_DBG("%s urb %p status %d count %d", hdev->name,
284 urb, urb->status, urb->actual_length);
285
286 if (!test_bit(HCI_RUNNING, &hdev->flags))
287 return;
288
289 if (urb->status == 0) {
290 hdev->stat.byte_rx += urb->actual_length;
291
292 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
293 urb->transfer_buffer,
294 urb->actual_length) < 0) {
295 BT_ERR("%s corrupted event packet", hdev->name);
296 hdev->stat.err_rx++;
297 }
298 }
299
300 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
301 return;
302
303 usb_mark_last_busy(data->udev);
304 usb_anchor_urb(urb, &data->intr_anchor);
305
306 err = usb_submit_urb(urb, GFP_ATOMIC);
307 if (err < 0) {
308 /* -EPERM: urb is being killed;
309 * -ENODEV: device got disconnected */
310 if (err != -EPERM && err != -ENODEV)
311 BT_ERR("%s urb %p failed to resubmit (%d)",
312 hdev->name, urb, -err);
313 usb_unanchor_urb(urb);
314 }
315 }
316
317 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
318 {
319 struct btusb_data *data = hci_get_drvdata(hdev);
320 struct urb *urb;
321 unsigned char *buf;
322 unsigned int pipe;
323 int err, size;
324
325 BT_DBG("%s", hdev->name);
326
327 if (!data->intr_ep)
328 return -ENODEV;
329
330 urb = usb_alloc_urb(0, mem_flags);
331 if (!urb)
332 return -ENOMEM;
333
334 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
335
336 buf = kmalloc(size, mem_flags);
337 if (!buf) {
338 usb_free_urb(urb);
339 return -ENOMEM;
340 }
341
342 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
343
344 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
345 btusb_intr_complete, hdev,
346 data->intr_ep->bInterval);
347
348 urb->transfer_flags |= URB_FREE_BUFFER;
349
350 usb_anchor_urb(urb, &data->intr_anchor);
351
352 err = usb_submit_urb(urb, mem_flags);
353 if (err < 0) {
354 if (err != -EPERM && err != -ENODEV)
355 BT_ERR("%s urb %p submission failed (%d)",
356 hdev->name, urb, -err);
357 usb_unanchor_urb(urb);
358 }
359
360 usb_free_urb(urb);
361
362 return err;
363 }
364
365 static void btusb_bulk_complete(struct urb *urb)
366 {
367 struct hci_dev *hdev = urb->context;
368 struct btusb_data *data = hci_get_drvdata(hdev);
369 int err;
370
371 BT_DBG("%s urb %p status %d count %d", hdev->name,
372 urb, urb->status, urb->actual_length);
373
374 if (!test_bit(HCI_RUNNING, &hdev->flags))
375 return;
376
377 if (urb->status == 0) {
378 hdev->stat.byte_rx += urb->actual_length;
379
380 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
381 urb->transfer_buffer,
382 urb->actual_length) < 0) {
383 BT_ERR("%s corrupted ACL packet", hdev->name);
384 hdev->stat.err_rx++;
385 }
386 }
387
388 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
389 return;
390
391 usb_anchor_urb(urb, &data->bulk_anchor);
392 usb_mark_last_busy(data->udev);
393
394 err = usb_submit_urb(urb, GFP_ATOMIC);
395 if (err < 0) {
396 /* -EPERM: urb is being killed;
397 * -ENODEV: device got disconnected */
398 if (err != -EPERM && err != -ENODEV)
399 BT_ERR("%s urb %p failed to resubmit (%d)",
400 hdev->name, urb, -err);
401 usb_unanchor_urb(urb);
402 }
403 }
404
405 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
406 {
407 struct btusb_data *data = hci_get_drvdata(hdev);
408 struct urb *urb;
409 unsigned char *buf;
410 unsigned int pipe;
411 int err, size = HCI_MAX_FRAME_SIZE;
412
413 BT_DBG("%s", hdev->name);
414
415 if (!data->bulk_rx_ep)
416 return -ENODEV;
417
418 urb = usb_alloc_urb(0, mem_flags);
419 if (!urb)
420 return -ENOMEM;
421
422 buf = kmalloc(size, mem_flags);
423 if (!buf) {
424 usb_free_urb(urb);
425 return -ENOMEM;
426 }
427
428 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
429
430 usb_fill_bulk_urb(urb, data->udev, pipe,
431 buf, size, btusb_bulk_complete, hdev);
432
433 urb->transfer_flags |= URB_FREE_BUFFER;
434
435 usb_mark_last_busy(data->udev);
436 usb_anchor_urb(urb, &data->bulk_anchor);
437
438 err = usb_submit_urb(urb, mem_flags);
439 if (err < 0) {
440 if (err != -EPERM && err != -ENODEV)
441 BT_ERR("%s urb %p submission failed (%d)",
442 hdev->name, urb, -err);
443 usb_unanchor_urb(urb);
444 }
445
446 usb_free_urb(urb);
447
448 return err;
449 }
450
451 static void btusb_isoc_complete(struct urb *urb)
452 {
453 struct hci_dev *hdev = urb->context;
454 struct btusb_data *data = hci_get_drvdata(hdev);
455 int i, err;
456
457 BT_DBG("%s urb %p status %d count %d", hdev->name,
458 urb, urb->status, urb->actual_length);
459
460 if (!test_bit(HCI_RUNNING, &hdev->flags))
461 return;
462
463 if (urb->status == 0) {
464 for (i = 0; i < urb->number_of_packets; i++) {
465 unsigned int offset = urb->iso_frame_desc[i].offset;
466 unsigned int length = urb->iso_frame_desc[i].actual_length;
467
468 if (urb->iso_frame_desc[i].status)
469 continue;
470
471 hdev->stat.byte_rx += length;
472
473 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
474 urb->transfer_buffer + offset,
475 length) < 0) {
476 BT_ERR("%s corrupted SCO packet", hdev->name);
477 hdev->stat.err_rx++;
478 }
479 }
480 }
481
482 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
483 return;
484
485 usb_anchor_urb(urb, &data->isoc_anchor);
486
487 err = usb_submit_urb(urb, GFP_ATOMIC);
488 if (err < 0) {
489 /* -EPERM: urb is being killed;
490 * -ENODEV: device got disconnected */
491 if (err != -EPERM && err != -ENODEV)
492 BT_ERR("%s urb %p failed to resubmit (%d)",
493 hdev->name, urb, -err);
494 usb_unanchor_urb(urb);
495 }
496 }
497
498 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
499 {
500 int i, offset = 0;
501
502 BT_DBG("len %d mtu %d", len, mtu);
503
504 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
505 i++, offset += mtu, len -= mtu) {
506 urb->iso_frame_desc[i].offset = offset;
507 urb->iso_frame_desc[i].length = mtu;
508 }
509
510 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
511 urb->iso_frame_desc[i].offset = offset;
512 urb->iso_frame_desc[i].length = len;
513 i++;
514 }
515
516 urb->number_of_packets = i;
517 }
518
519 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
520 {
521 struct btusb_data *data = hci_get_drvdata(hdev);
522 struct urb *urb;
523 unsigned char *buf;
524 unsigned int pipe;
525 int err, size;
526
527 BT_DBG("%s", hdev->name);
528
529 if (!data->isoc_rx_ep)
530 return -ENODEV;
531
532 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
533 if (!urb)
534 return -ENOMEM;
535
536 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
537 BTUSB_MAX_ISOC_FRAMES;
538
539 buf = kmalloc(size, mem_flags);
540 if (!buf) {
541 usb_free_urb(urb);
542 return -ENOMEM;
543 }
544
545 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
546
547 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
548 hdev, data->isoc_rx_ep->bInterval);
549
550 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
551
552 __fill_isoc_descriptor(urb, size,
553 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
554
555 usb_anchor_urb(urb, &data->isoc_anchor);
556
557 err = usb_submit_urb(urb, mem_flags);
558 if (err < 0) {
559 if (err != -EPERM && err != -ENODEV)
560 BT_ERR("%s urb %p submission failed (%d)",
561 hdev->name, urb, -err);
562 usb_unanchor_urb(urb);
563 }
564
565 usb_free_urb(urb);
566
567 return err;
568 }
569
570 static void btusb_tx_complete(struct urb *urb)
571 {
572 struct sk_buff *skb = urb->context;
573 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
574 struct btusb_data *data = hci_get_drvdata(hdev);
575
576 BT_DBG("%s urb %p status %d count %d", hdev->name,
577 urb, urb->status, urb->actual_length);
578
579 if (!test_bit(HCI_RUNNING, &hdev->flags))
580 goto done;
581
582 if (!urb->status)
583 hdev->stat.byte_tx += urb->transfer_buffer_length;
584 else
585 hdev->stat.err_tx++;
586
587 done:
588 spin_lock(&data->txlock);
589 data->tx_in_flight--;
590 spin_unlock(&data->txlock);
591
592 kfree(urb->setup_packet);
593
594 kfree_skb(skb);
595 }
596
597 static void btusb_isoc_tx_complete(struct urb *urb)
598 {
599 struct sk_buff *skb = urb->context;
600 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
601
602 BT_DBG("%s urb %p status %d count %d", hdev->name,
603 urb, urb->status, urb->actual_length);
604
605 if (!test_bit(HCI_RUNNING, &hdev->flags))
606 goto done;
607
608 if (!urb->status)
609 hdev->stat.byte_tx += urb->transfer_buffer_length;
610 else
611 hdev->stat.err_tx++;
612
613 done:
614 kfree(urb->setup_packet);
615
616 kfree_skb(skb);
617 }
618
619 static int btusb_open(struct hci_dev *hdev)
620 {
621 struct btusb_data *data = hci_get_drvdata(hdev);
622 int err;
623
624 BT_DBG("%s", hdev->name);
625
626 err = usb_autopm_get_interface(data->intf);
627 if (err < 0)
628 return err;
629
630 data->intf->needs_remote_wakeup = 1;
631
632 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
633 goto done;
634
635 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
636 goto done;
637
638 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
639 if (err < 0)
640 goto failed;
641
642 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
643 if (err < 0) {
644 usb_kill_anchored_urbs(&data->intr_anchor);
645 goto failed;
646 }
647
648 set_bit(BTUSB_BULK_RUNNING, &data->flags);
649 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
650
651 done:
652 usb_autopm_put_interface(data->intf);
653 return 0;
654
655 failed:
656 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
657 clear_bit(HCI_RUNNING, &hdev->flags);
658 usb_autopm_put_interface(data->intf);
659 return err;
660 }
661
662 static void btusb_stop_traffic(struct btusb_data *data)
663 {
664 usb_kill_anchored_urbs(&data->intr_anchor);
665 usb_kill_anchored_urbs(&data->bulk_anchor);
666 usb_kill_anchored_urbs(&data->isoc_anchor);
667 }
668
669 static int btusb_close(struct hci_dev *hdev)
670 {
671 struct btusb_data *data = hci_get_drvdata(hdev);
672 int err;
673
674 BT_DBG("%s", hdev->name);
675
676 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
677 return 0;
678
679 cancel_work_sync(&data->work);
680 cancel_work_sync(&data->waker);
681
682 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
683 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
684 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
685
686 btusb_stop_traffic(data);
687 err = usb_autopm_get_interface(data->intf);
688 if (err < 0)
689 goto failed;
690
691 data->intf->needs_remote_wakeup = 0;
692 usb_autopm_put_interface(data->intf);
693
694 failed:
695 usb_scuttle_anchored_urbs(&data->deferred);
696 return 0;
697 }
698
699 static int btusb_flush(struct hci_dev *hdev)
700 {
701 struct btusb_data *data = hci_get_drvdata(hdev);
702
703 BT_DBG("%s", hdev->name);
704
705 usb_kill_anchored_urbs(&data->tx_anchor);
706
707 return 0;
708 }
709
710 static int btusb_send_frame(struct sk_buff *skb)
711 {
712 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
713 struct btusb_data *data = hci_get_drvdata(hdev);
714 struct usb_ctrlrequest *dr;
715 struct urb *urb;
716 unsigned int pipe;
717 int err;
718
719 BT_DBG("%s", hdev->name);
720
721 if (!test_bit(HCI_RUNNING, &hdev->flags))
722 return -EBUSY;
723
724 switch (bt_cb(skb)->pkt_type) {
725 case HCI_COMMAND_PKT:
726 urb = usb_alloc_urb(0, GFP_ATOMIC);
727 if (!urb)
728 return -ENOMEM;
729
730 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
731 if (!dr) {
732 usb_free_urb(urb);
733 return -ENOMEM;
734 }
735
736 dr->bRequestType = data->cmdreq_type;
737 dr->bRequest = 0;
738 dr->wIndex = 0;
739 dr->wValue = 0;
740 dr->wLength = __cpu_to_le16(skb->len);
741
742 pipe = usb_sndctrlpipe(data->udev, 0x00);
743
744 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
745 skb->data, skb->len, btusb_tx_complete, skb);
746
747 hdev->stat.cmd_tx++;
748 break;
749
750 case HCI_ACLDATA_PKT:
751 if (!data->bulk_tx_ep)
752 return -ENODEV;
753
754 urb = usb_alloc_urb(0, GFP_ATOMIC);
755 if (!urb)
756 return -ENOMEM;
757
758 pipe = usb_sndbulkpipe(data->udev,
759 data->bulk_tx_ep->bEndpointAddress);
760
761 usb_fill_bulk_urb(urb, data->udev, pipe,
762 skb->data, skb->len, btusb_tx_complete, skb);
763
764 hdev->stat.acl_tx++;
765 break;
766
767 case HCI_SCODATA_PKT:
768 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
769 return -ENODEV;
770
771 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
772 if (!urb)
773 return -ENOMEM;
774
775 pipe = usb_sndisocpipe(data->udev,
776 data->isoc_tx_ep->bEndpointAddress);
777
778 usb_fill_int_urb(urb, data->udev, pipe,
779 skb->data, skb->len, btusb_isoc_tx_complete,
780 skb, data->isoc_tx_ep->bInterval);
781
782 urb->transfer_flags = URB_ISO_ASAP;
783
784 __fill_isoc_descriptor(urb, skb->len,
785 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
786
787 hdev->stat.sco_tx++;
788 goto skip_waking;
789
790 default:
791 return -EILSEQ;
792 }
793
794 err = inc_tx(data);
795 if (err) {
796 usb_anchor_urb(urb, &data->deferred);
797 schedule_work(&data->waker);
798 err = 0;
799 goto done;
800 }
801
802 skip_waking:
803 usb_anchor_urb(urb, &data->tx_anchor);
804
805 err = usb_submit_urb(urb, GFP_ATOMIC);
806 if (err < 0) {
807 if (err != -EPERM && err != -ENODEV)
808 BT_ERR("%s urb %p submission failed (%d)",
809 hdev->name, urb, -err);
810 kfree(urb->setup_packet);
811 usb_unanchor_urb(urb);
812 } else {
813 usb_mark_last_busy(data->udev);
814 }
815
816 done:
817 usb_free_urb(urb);
818 return err;
819 }
820
821 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
822 {
823 struct btusb_data *data = hci_get_drvdata(hdev);
824
825 BT_DBG("%s evt %d", hdev->name, evt);
826
827 if (hdev->conn_hash.sco_num != data->sco_num) {
828 data->sco_num = hdev->conn_hash.sco_num;
829 schedule_work(&data->work);
830 }
831 }
832
833 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
834 {
835 struct btusb_data *data = hci_get_drvdata(hdev);
836 struct usb_interface *intf = data->isoc;
837 struct usb_endpoint_descriptor *ep_desc;
838 int i, err;
839
840 if (!data->isoc)
841 return -ENODEV;
842
843 err = usb_set_interface(data->udev, 1, altsetting);
844 if (err < 0) {
845 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
846 return err;
847 }
848
849 data->isoc_altsetting = altsetting;
850
851 data->isoc_tx_ep = NULL;
852 data->isoc_rx_ep = NULL;
853
854 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
855 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
856
857 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
858 data->isoc_tx_ep = ep_desc;
859 continue;
860 }
861
862 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
863 data->isoc_rx_ep = ep_desc;
864 continue;
865 }
866 }
867
868 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
869 BT_ERR("%s invalid SCO descriptors", hdev->name);
870 return -ENODEV;
871 }
872
873 return 0;
874 }
875
876 static void btusb_work(struct work_struct *work)
877 {
878 struct btusb_data *data = container_of(work, struct btusb_data, work);
879 struct hci_dev *hdev = data->hdev;
880 int new_alts;
881 int err;
882
883 if (hdev->conn_hash.sco_num > 0) {
884 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
885 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
886 if (err < 0) {
887 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
888 usb_kill_anchored_urbs(&data->isoc_anchor);
889 return;
890 }
891
892 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
893 }
894
895 if (hdev->voice_setting & 0x0020) {
896 static const int alts[3] = { 2, 4, 5 };
897 new_alts = alts[hdev->conn_hash.sco_num - 1];
898 } else {
899 new_alts = hdev->conn_hash.sco_num;
900 }
901
902 if (data->isoc_altsetting != new_alts) {
903 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
904 usb_kill_anchored_urbs(&data->isoc_anchor);
905
906 if (__set_isoc_interface(hdev, new_alts) < 0)
907 return;
908 }
909
910 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
911 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
912 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
913 else
914 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
915 }
916 } else {
917 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
918 usb_kill_anchored_urbs(&data->isoc_anchor);
919
920 __set_isoc_interface(hdev, 0);
921 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
922 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
923 }
924 }
925
926 static void btusb_waker(struct work_struct *work)
927 {
928 struct btusb_data *data = container_of(work, struct btusb_data, waker);
929 int err;
930
931 err = usb_autopm_get_interface(data->intf);
932 if (err < 0)
933 return;
934
935 usb_autopm_put_interface(data->intf);
936 }
937
938 static int btusb_setup_bcm92035(struct hci_dev *hdev)
939 {
940 struct sk_buff *skb;
941 u8 val = 0x00;
942
943 BT_DBG("%s", hdev->name);
944
945 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
946 if (IS_ERR(skb))
947 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
948 else
949 kfree_skb(skb);
950
951 return 0;
952 }
953
954 struct intel_version {
955 u8 status;
956 u8 hw_platform;
957 u8 hw_variant;
958 u8 hw_revision;
959 u8 fw_variant;
960 u8 fw_revision;
961 u8 fw_build_num;
962 u8 fw_build_ww;
963 u8 fw_build_yy;
964 u8 fw_patch_num;
965 } __packed;
966
967 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
968 struct intel_version *ver)
969 {
970 const struct firmware *fw;
971 char fwname[64];
972 int ret;
973
974 snprintf(fwname, sizeof(fwname),
975 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
976 ver->hw_platform, ver->hw_variant, ver->hw_revision,
977 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
978 ver->fw_build_ww, ver->fw_build_yy);
979
980 ret = request_firmware(&fw, fwname, &hdev->dev);
981 if (ret < 0) {
982 if (ret == -EINVAL) {
983 BT_ERR("%s Intel firmware file request failed (%d)",
984 hdev->name, ret);
985 return NULL;
986 }
987
988 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
989 hdev->name, fwname, ret);
990
991 /* If the correct firmware patch file is not found, use the
992 * default firmware patch file instead
993 */
994 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
995 ver->hw_platform, ver->hw_variant);
996 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
997 BT_ERR("%s failed to open default Intel fw file: %s",
998 hdev->name, fwname);
999 return NULL;
1000 }
1001 }
1002
1003 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1004
1005 return fw;
1006 }
1007
1008 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1009 const struct firmware *fw,
1010 const u8 **fw_ptr, int *disable_patch)
1011 {
1012 struct sk_buff *skb;
1013 struct hci_command_hdr *cmd;
1014 const u8 *cmd_param;
1015 struct hci_event_hdr *evt = NULL;
1016 const u8 *evt_param = NULL;
1017 int remain = fw->size - (*fw_ptr - fw->data);
1018
1019 /* The first byte indicates the types of the patch command or event.
1020 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1021 * in the current firmware buffer doesn't start with 0x01 or
1022 * the size of remain buffer is smaller than HCI command header,
1023 * the firmware file is corrupted and it should stop the patching
1024 * process.
1025 */
1026 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1027 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1028 return -EINVAL;
1029 }
1030 (*fw_ptr)++;
1031 remain--;
1032
1033 cmd = (struct hci_command_hdr *)(*fw_ptr);
1034 *fw_ptr += sizeof(*cmd);
1035 remain -= sizeof(*cmd);
1036
1037 /* Ensure that the remain firmware data is long enough than the length
1038 * of command parameter. If not, the firmware file is corrupted.
1039 */
1040 if (remain < cmd->plen) {
1041 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1042 return -EFAULT;
1043 }
1044
1045 /* If there is a command that loads a patch in the firmware
1046 * file, then enable the patch upon success, otherwise just
1047 * disable the manufacturer mode, for example patch activation
1048 * is not required when the default firmware patch file is used
1049 * because there are no patch data to load.
1050 */
1051 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1052 *disable_patch = 0;
1053
1054 cmd_param = *fw_ptr;
1055 *fw_ptr += cmd->plen;
1056 remain -= cmd->plen;
1057
1058 /* This reads the expected events when the above command is sent to the
1059 * device. Some vendor commands expects more than one events, for
1060 * example command status event followed by vendor specific event.
1061 * For this case, it only keeps the last expected event. so the command
1062 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1063 * last expected event.
1064 */
1065 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1066 (*fw_ptr)++;
1067 remain--;
1068
1069 evt = (struct hci_event_hdr *)(*fw_ptr);
1070 *fw_ptr += sizeof(*evt);
1071 remain -= sizeof(*evt);
1072
1073 if (remain < evt->plen) {
1074 BT_ERR("%s Intel fw corrupted: invalid evt len",
1075 hdev->name);
1076 return -EFAULT;
1077 }
1078
1079 evt_param = *fw_ptr;
1080 *fw_ptr += evt->plen;
1081 remain -= evt->plen;
1082 }
1083
1084 /* Every HCI commands in the firmware file has its correspond event.
1085 * If event is not found or remain is smaller than zero, the firmware
1086 * file is corrupted.
1087 */
1088 if (!evt || !evt_param || remain < 0) {
1089 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1090 return -EFAULT;
1091 }
1092
1093 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1094 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1095 if (IS_ERR(skb)) {
1096 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1097 hdev->name, cmd->opcode, PTR_ERR(skb));
1098 return -PTR_ERR(skb);
1099 }
1100
1101 /* It ensures that the returned event matches the event data read from
1102 * the firmware file. At fist, it checks the length and then
1103 * the contents of the event.
1104 */
1105 if (skb->len != evt->plen) {
1106 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1107 le16_to_cpu(cmd->opcode));
1108 kfree_skb(skb);
1109 return -EFAULT;
1110 }
1111
1112 if (memcmp(skb->data, evt_param, evt->plen)) {
1113 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1114 hdev->name, le16_to_cpu(cmd->opcode));
1115 kfree_skb(skb);
1116 return -EFAULT;
1117 }
1118 kfree_skb(skb);
1119
1120 return 0;
1121 }
1122
1123 static int btusb_setup_intel(struct hci_dev *hdev)
1124 {
1125 struct sk_buff *skb;
1126 const struct firmware *fw;
1127 const u8 *fw_ptr;
1128 int disable_patch;
1129 struct intel_version *ver;
1130
1131 const u8 mfg_enable[] = { 0x01, 0x00 };
1132 const u8 mfg_disable[] = { 0x00, 0x00 };
1133 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1134 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1135
1136 BT_DBG("%s", hdev->name);
1137
1138 /* The controller has a bug with the first HCI command sent to it
1139 * returning number of completed commands as zero. This would stall the
1140 * command processing in the Bluetooth core.
1141 *
1142 * As a workaround, send HCI Reset command first which will reset the
1143 * number of completed commands and allow normal command processing
1144 * from now on.
1145 */
1146 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1147 if (IS_ERR(skb)) {
1148 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1149 hdev->name, PTR_ERR(skb));
1150 return -PTR_ERR(skb);
1151 }
1152 kfree_skb(skb);
1153
1154 /* Read Intel specific controller version first to allow selection of
1155 * which firmware file to load.
1156 *
1157 * The returned information are hardware variant and revision plus
1158 * firmware variant, revision and build number.
1159 */
1160 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1161 if (IS_ERR(skb)) {
1162 BT_ERR("%s reading Intel fw version command failed (%ld)",
1163 hdev->name, PTR_ERR(skb));
1164 return -PTR_ERR(skb);
1165 }
1166
1167 if (skb->len != sizeof(*ver)) {
1168 BT_ERR("%s Intel version event length mismatch", hdev->name);
1169 kfree_skb(skb);
1170 return -EIO;
1171 }
1172
1173 ver = (struct intel_version *)skb->data;
1174 if (ver->status) {
1175 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1176 ver->status);
1177 kfree_skb(skb);
1178 return -bt_to_errno(ver->status);
1179 }
1180
1181 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1182 hdev->name, ver->hw_platform, ver->hw_variant,
1183 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1184 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1185 ver->fw_patch_num);
1186
1187 /* fw_patch_num indicates the version of patch the device currently
1188 * have. If there is no patch data in the device, it is always 0x00.
1189 * So, if it is other than 0x00, no need to patch the deivce again.
1190 */
1191 if (ver->fw_patch_num) {
1192 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1193 hdev->name, ver->fw_patch_num);
1194 kfree_skb(skb);
1195 return 0;
1196 }
1197
1198 /* Opens the firmware patch file based on the firmware version read
1199 * from the controller. If it fails to open the matching firmware
1200 * patch file, it tries to open the default firmware patch file.
1201 * If no patch file is found, allow the device to operate without
1202 * a patch.
1203 */
1204 fw = btusb_setup_intel_get_fw(hdev, ver);
1205 if (!fw) {
1206 kfree_skb(skb);
1207 return 0;
1208 }
1209 fw_ptr = fw->data;
1210
1211 /* This Intel specific command enables the manufacturer mode of the
1212 * controller.
1213 *
1214 * Only while this mode is enabled, the driver can download the
1215 * firmware patch data and configuration parameters.
1216 */
1217 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1218 if (IS_ERR(skb)) {
1219 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1220 hdev->name, PTR_ERR(skb));
1221 release_firmware(fw);
1222 return -PTR_ERR(skb);
1223 }
1224
1225 if (skb->data[0]) {
1226 u8 evt_status = skb->data[0];
1227 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1228 hdev->name, evt_status);
1229 kfree_skb(skb);
1230 release_firmware(fw);
1231 return -bt_to_errno(evt_status);
1232 }
1233 kfree_skb(skb);
1234
1235 disable_patch = 1;
1236
1237 /* The firmware data file consists of list of Intel specific HCI
1238 * commands and its expected events. The first byte indicates the
1239 * type of the message, either HCI command or HCI event.
1240 *
1241 * It reads the command and its expected event from the firmware file,
1242 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1243 * the returned event is compared with the event read from the firmware
1244 * file and it will continue until all the messages are downloaded to
1245 * the controller.
1246 *
1247 * Once the firmware patching is completed successfully,
1248 * the manufacturer mode is disabled with reset and activating the
1249 * downloaded patch.
1250 *
1251 * If the firmware patching fails, the manufacturer mode is
1252 * disabled with reset and deactivating the patch.
1253 *
1254 * If the default patch file is used, no reset is done when disabling
1255 * the manufacturer.
1256 */
1257 while (fw->size > fw_ptr - fw->data) {
1258 int ret;
1259
1260 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1261 &disable_patch);
1262 if (ret < 0)
1263 goto exit_mfg_deactivate;
1264 }
1265
1266 release_firmware(fw);
1267
1268 if (disable_patch)
1269 goto exit_mfg_disable;
1270
1271 /* Patching completed successfully and disable the manufacturer mode
1272 * with reset and activate the downloaded firmware patches.
1273 */
1274 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1275 mfg_reset_activate, HCI_INIT_TIMEOUT);
1276 if (IS_ERR(skb)) {
1277 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1278 hdev->name, PTR_ERR(skb));
1279 return -PTR_ERR(skb);
1280 }
1281 kfree_skb(skb);
1282
1283 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1284 hdev->name);
1285
1286 return 0;
1287
1288 exit_mfg_disable:
1289 /* Disable the manufacturer mode without reset */
1290 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1291 HCI_INIT_TIMEOUT);
1292 if (IS_ERR(skb)) {
1293 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1294 hdev->name, PTR_ERR(skb));
1295 return -PTR_ERR(skb);
1296 }
1297 kfree_skb(skb);
1298
1299 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1300 return 0;
1301
1302 exit_mfg_deactivate:
1303 release_firmware(fw);
1304
1305 /* Patching failed. Disable the manufacturer mode with reset and
1306 * deactivate the downloaded firmware patches.
1307 */
1308 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1309 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1310 if (IS_ERR(skb)) {
1311 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1312 hdev->name, PTR_ERR(skb));
1313 return -PTR_ERR(skb);
1314 }
1315 kfree_skb(skb);
1316
1317 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1318 hdev->name);
1319
1320 return 0;
1321 }
1322
1323 static int btusb_probe(struct usb_interface *intf,
1324 const struct usb_device_id *id)
1325 {
1326 struct usb_endpoint_descriptor *ep_desc;
1327 struct btusb_data *data;
1328 struct hci_dev *hdev;
1329 int i, err;
1330
1331 BT_DBG("intf %p id %p", intf, id);
1332
1333 /* interface numbers are hardcoded in the spec */
1334 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1335 return -ENODEV;
1336
1337 if (!id->driver_info) {
1338 const struct usb_device_id *match;
1339 match = usb_match_id(intf, blacklist_table);
1340 if (match)
1341 id = match;
1342 }
1343
1344 if (id->driver_info == BTUSB_IGNORE)
1345 return -ENODEV;
1346
1347 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1348 return -ENODEV;
1349
1350 if (ignore_csr && id->driver_info & BTUSB_CSR)
1351 return -ENODEV;
1352
1353 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1354 return -ENODEV;
1355
1356 if (id->driver_info & BTUSB_ATH3012) {
1357 struct usb_device *udev = interface_to_usbdev(intf);
1358
1359 /* Old firmware would otherwise let ath3k driver load
1360 * patch and sysconfig files */
1361 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1362 return -ENODEV;
1363 }
1364
1365 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1366 if (!data)
1367 return -ENOMEM;
1368
1369 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1370 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1371
1372 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1373 data->intr_ep = ep_desc;
1374 continue;
1375 }
1376
1377 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1378 data->bulk_tx_ep = ep_desc;
1379 continue;
1380 }
1381
1382 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1383 data->bulk_rx_ep = ep_desc;
1384 continue;
1385 }
1386 }
1387
1388 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1389 return -ENODEV;
1390
1391 data->cmdreq_type = USB_TYPE_CLASS;
1392
1393 data->udev = interface_to_usbdev(intf);
1394 data->intf = intf;
1395
1396 spin_lock_init(&data->lock);
1397
1398 INIT_WORK(&data->work, btusb_work);
1399 INIT_WORK(&data->waker, btusb_waker);
1400 spin_lock_init(&data->txlock);
1401
1402 init_usb_anchor(&data->tx_anchor);
1403 init_usb_anchor(&data->intr_anchor);
1404 init_usb_anchor(&data->bulk_anchor);
1405 init_usb_anchor(&data->isoc_anchor);
1406 init_usb_anchor(&data->deferred);
1407
1408 hdev = hci_alloc_dev();
1409 if (!hdev)
1410 return -ENOMEM;
1411
1412 hdev->bus = HCI_USB;
1413 hci_set_drvdata(hdev, data);
1414
1415 data->hdev = hdev;
1416
1417 SET_HCIDEV_DEV(hdev, &intf->dev);
1418
1419 hdev->open = btusb_open;
1420 hdev->close = btusb_close;
1421 hdev->flush = btusb_flush;
1422 hdev->send = btusb_send_frame;
1423 hdev->notify = btusb_notify;
1424
1425 if (id->driver_info & BTUSB_BCM92035)
1426 hdev->setup = btusb_setup_bcm92035;
1427
1428 if (id->driver_info & BTUSB_INTEL)
1429 hdev->setup = btusb_setup_intel;
1430
1431 /* Interface numbers are hardcoded in the specification */
1432 data->isoc = usb_ifnum_to_if(data->udev, 1);
1433
1434 if (!reset)
1435 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1436
1437 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1438 if (!disable_scofix)
1439 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1440 }
1441
1442 if (id->driver_info & BTUSB_BROKEN_ISOC)
1443 data->isoc = NULL;
1444
1445 if (id->driver_info & BTUSB_DIGIANSWER) {
1446 data->cmdreq_type = USB_TYPE_VENDOR;
1447 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1448 }
1449
1450 if (id->driver_info & BTUSB_CSR) {
1451 struct usb_device *udev = data->udev;
1452
1453 /* Old firmware would otherwise execute USB reset */
1454 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1455 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1456 }
1457
1458 if (id->driver_info & BTUSB_SNIFFER) {
1459 struct usb_device *udev = data->udev;
1460
1461 /* New sniffer firmware has crippled HCI interface */
1462 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1463 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1464
1465 data->isoc = NULL;
1466 }
1467
1468 if (data->isoc) {
1469 err = usb_driver_claim_interface(&btusb_driver,
1470 data->isoc, data);
1471 if (err < 0) {
1472 hci_free_dev(hdev);
1473 return err;
1474 }
1475 }
1476
1477 err = hci_register_dev(hdev);
1478 if (err < 0) {
1479 hci_free_dev(hdev);
1480 return err;
1481 }
1482
1483 usb_set_intfdata(intf, data);
1484
1485 return 0;
1486 }
1487
1488 static void btusb_disconnect(struct usb_interface *intf)
1489 {
1490 struct btusb_data *data = usb_get_intfdata(intf);
1491 struct hci_dev *hdev;
1492
1493 BT_DBG("intf %p", intf);
1494
1495 if (!data)
1496 return;
1497
1498 hdev = data->hdev;
1499 usb_set_intfdata(data->intf, NULL);
1500
1501 if (data->isoc)
1502 usb_set_intfdata(data->isoc, NULL);
1503
1504 hci_unregister_dev(hdev);
1505
1506 if (intf == data->isoc)
1507 usb_driver_release_interface(&btusb_driver, data->intf);
1508 else if (data->isoc)
1509 usb_driver_release_interface(&btusb_driver, data->isoc);
1510
1511 hci_free_dev(hdev);
1512 }
1513
1514 #ifdef CONFIG_PM
1515 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1516 {
1517 struct btusb_data *data = usb_get_intfdata(intf);
1518
1519 BT_DBG("intf %p", intf);
1520
1521 if (data->suspend_count++)
1522 return 0;
1523
1524 spin_lock_irq(&data->txlock);
1525 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1526 set_bit(BTUSB_SUSPENDING, &data->flags);
1527 spin_unlock_irq(&data->txlock);
1528 } else {
1529 spin_unlock_irq(&data->txlock);
1530 data->suspend_count--;
1531 return -EBUSY;
1532 }
1533
1534 cancel_work_sync(&data->work);
1535
1536 btusb_stop_traffic(data);
1537 usb_kill_anchored_urbs(&data->tx_anchor);
1538
1539 return 0;
1540 }
1541
1542 static void play_deferred(struct btusb_data *data)
1543 {
1544 struct urb *urb;
1545 int err;
1546
1547 while ((urb = usb_get_from_anchor(&data->deferred))) {
1548 err = usb_submit_urb(urb, GFP_ATOMIC);
1549 if (err < 0)
1550 break;
1551
1552 data->tx_in_flight++;
1553 }
1554 usb_scuttle_anchored_urbs(&data->deferred);
1555 }
1556
1557 static int btusb_resume(struct usb_interface *intf)
1558 {
1559 struct btusb_data *data = usb_get_intfdata(intf);
1560 struct hci_dev *hdev = data->hdev;
1561 int err = 0;
1562
1563 BT_DBG("intf %p", intf);
1564
1565 if (--data->suspend_count)
1566 return 0;
1567
1568 if (!test_bit(HCI_RUNNING, &hdev->flags))
1569 goto done;
1570
1571 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1572 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1573 if (err < 0) {
1574 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1575 goto failed;
1576 }
1577 }
1578
1579 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1580 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1581 if (err < 0) {
1582 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1583 goto failed;
1584 }
1585
1586 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1587 }
1588
1589 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1590 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1591 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1592 else
1593 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1594 }
1595
1596 spin_lock_irq(&data->txlock);
1597 play_deferred(data);
1598 clear_bit(BTUSB_SUSPENDING, &data->flags);
1599 spin_unlock_irq(&data->txlock);
1600 schedule_work(&data->work);
1601
1602 return 0;
1603
1604 failed:
1605 usb_scuttle_anchored_urbs(&data->deferred);
1606 done:
1607 spin_lock_irq(&data->txlock);
1608 clear_bit(BTUSB_SUSPENDING, &data->flags);
1609 spin_unlock_irq(&data->txlock);
1610
1611 return err;
1612 }
1613 #endif
1614
1615 static struct usb_driver btusb_driver = {
1616 .name = "btusb",
1617 .probe = btusb_probe,
1618 .disconnect = btusb_disconnect,
1619 #ifdef CONFIG_PM
1620 .suspend = btusb_suspend,
1621 .resume = btusb_resume,
1622 .reset_resume = btusb_resume,
1623 #endif
1624 .id_table = btusb_table,
1625 .supports_autosuspend = 1,
1626 .disable_hub_initiated_lpm = 1,
1627 };
1628
1629 module_usb_driver(btusb_driver);
1630
1631 module_param(ignore_dga, bool, 0644);
1632 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1633
1634 module_param(ignore_csr, bool, 0644);
1635 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1636
1637 module_param(ignore_sniffer, bool, 0644);
1638 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1639
1640 module_param(disable_scofix, bool, 0644);
1641 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1642
1643 module_param(force_scofix, bool, 0644);
1644 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1645
1646 module_param(reset, bool, 0644);
1647 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1648
1649 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1650 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1651 MODULE_VERSION(VERSION);
1652 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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